/* roulang page: index */
:root {
            --color-primary: #1E1F24;
            --color-primary-light: #2A2B32;
            --color-accent: #FF4D2E;
            --color-accent-hover: #E63E20;
            --color-online: #2ECC9A;
            --color-online-dark: #27AE80;
            --color-bg: #F7F6F2;
            --color-card: #FFFFFF;
            --color-border: #E5E7EB;
            --color-gray: #9CA3AF;
            --color-gray-light: #D1D5DB;
            --color-gray-dark: #4B5563;
            --color-text: #1E1F24;
            --color-text-secondary: #6B7280;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 50px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --font-base: 16px;
            --line-height: 1.8;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: var(--font-base);
        }

        body {
            font-family: var(--font-family);
            line-height: var(--line-height);
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--color-accent-hover);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            width: 100%;
            background: #fff;
            transition: border-color var(--transition), box-shadow var(--transition);
            outline: none;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.12);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }

        .container--narrow {
            max-width: 900px;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .header__brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            padding: var(--spacing-md) 0;
            flex-wrap: wrap;
        }

        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .header__logo:hover {
            color: #fff;
        }

        .header__logo-icon {
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
            position: relative;
        }

        .header__logo-icon::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 10px;
            height: 10px;
            background: var(--color-online);
            border-radius: 50%;
            border: 2px solid var(--color-primary);
            animation: livePulse 2s infinite;
        }

        @keyframes livePulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(46, 204, 154, 0.6);
            }
            50% {
                box-shadow: 0 0 0 6px rgba(46, 204, 154, 0);
            }
        }

        .header__search {
            flex: 1;
            max-width: 360px;
            min-width: 200px;
            position: relative;
        }

        .header__search input {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-full);
            color: #fff;
            padding: 10px 18px 10px 40px;
            transition: all var(--transition);
        }

        .header__search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .header__search input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.15);
        }

        .header__search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.85rem;
            pointer-events: none;
        }

        .header__actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
        }

        .header__cta-btn {
            background: var(--color-accent);
            color: #fff;
            padding: 10px 20px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
        }

        .header__cta-btn:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255, 77, 46, 0.35);
        }

        .header__cta-btn:active {
            transform: scale(0.96);
        }

        .header__cta-btn:focus-visible,
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .header__burger {
            display: none;
            background: transparent;
            color: #fff;
            font-size: 1.4rem;
            padding: 8px;
            border-radius: var(--radius-sm);
        }

        .header__burger:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .header__nav-row {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 4px 0;
        }

        .header__nav-grid {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
        }

        .header__nav-grid::-webkit-scrollbar {
            display: none;
        }

        .header__nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            padding: 10px 18px;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.8rem;
            font-weight: 500;
            border-radius: var(--radius-sm);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
            flex-shrink: 0;
        }

        .header__nav-item i {
            font-size: 1.1rem;
            transition: color var(--transition);
        }

        .header__nav-item:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .header__nav-item:hover i {
            color: var(--color-accent);
        }

        .header__nav-item.is-active {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .header__nav-item.is-active i {
            color: var(--color-accent);
        }

        .header__nav-item.is-active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: var(--color-primary);
            color: #fff;
            padding: var(--spacing-3xl) 0 var(--spacing-2xl);
            overflow: hidden;
            min-height: 70vh;
            display: flex;
            align-items: center;
            isolation: isolate;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/737e50568230ffc9.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: -2;
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 31, 36, 0.92) 0%, rgba(30, 31, 36, 0.75) 50%, rgba(30, 31, 36, 0.55) 100%);
            z-index: -1;
        }

        .hero__inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero__content {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
        }

        .hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.8);
            width: fit-content;
        }

        .hero__badge-dot {
            width: 8px;
            height: 8px;
            background: var(--color-online);
            border-radius: 50%;
            animation: livePulse 2s infinite;
        }

        .hero__title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.5px;
            color: #fff;
            margin: 0;
        }

        .hero__title-accent {
            color: var(--color-accent);
        }

        .hero__desc {
            font-size: 1.02rem;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.75);
            max-width: 520px;
        }

        .hero__cta-group {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            margin-top: var(--spacing-sm);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn--primary {
            background: var(--color-accent);
            color: #fff;
        }

        .btn--primary:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 77, 46, 0.4);
        }

        .btn--primary:active {
            transform: scale(0.96);
            box-shadow: 0 2px 8px rgba(255, 77, 46, 0.3);
        }

        .btn--secondary {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .btn--secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
        }

        .btn--secondary:active {
            transform: scale(0.96);
        }

        .hero__stats-row {
            display: flex;
            gap: var(--spacing-xl);
            margin-top: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .hero__stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero__stat-number {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
        }

        .hero__stat-number span {
            color: var(--color-accent);
        }

        .hero__stat-label {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.55);
        }

        /* Hero white paper card */
        .hero__whitepaper {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
        }

        .hero__whitepaper-cover {
            display: flex;
            gap: var(--spacing-lg);
            align-items: flex-start;
        }

        .hero__whitepaper-thumb {
            width: 140px;
            height: 180px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero__whitepaper-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero__whitepaper-info h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }

        .hero__whitepaper-info p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
        }

        .hero__whitepaper-toc {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-sm);
        }

        .hero__whitepaper-toc-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.65);
            padding: 6px 10px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-sm);
        }

        .hero__whitepaper-toc-item i {
            color: var(--color-online);
            font-size: 0.65rem;
            flex-shrink: 0;
        }

        .hero__whitepaper-form {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .hero__whitepaper-form input {
            flex: 1;
            min-width: 140px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 10px 14px;
        }

        .hero__whitepaper-form input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .hero__whitepaper-form input:focus {
            border-color: var(--color-online);
            box-shadow: 0 0 0 3px rgba(46, 204, 154, 0.15);
        }

        .hero__whitepaper-form .btn--primary {
            flex-shrink: 0;
            padding: 10px 20px;
        }

        /* ===== Sections ===== */
        .section {
            padding: var(--spacing-3xl) 0;
        }

        .section--bg-alt {
            background: #fff;
        }

        .section--bg-dark {
            background: var(--color-primary);
            color: #fff;
        }

        .section--bg-dark .section__title {
            color: #fff;
        }

        .section--bg-dark .section__subtitle {
            color: rgba(255, 255, 255, 0.65);
        }

        .section__header {
            max-width: 720px;
            margin-bottom: var(--spacing-xl);
        }

        .section__title {
            font-size: clamp(1.4rem, 2.8vw, 1.8rem);
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.4;
            margin-bottom: var(--spacing-sm);
        }

        .section__subtitle {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        .section__title-accent {
            color: var(--color-accent);
        }

        .section__title-online {
            color: var(--color-online);
        }

        /* ===== Metrics Dashboard ===== */
        .metrics-dashboard {
            background: var(--color-primary);
            color: #fff;
            padding: var(--spacing-2xl) 0;
            position: relative;
            overflow: hidden;
        }

        .metrics-dashboard::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            border: 2px solid rgba(255, 77, 46, 0.15);
            pointer-events: none;
        }

        .metrics-dashboard__grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-lg);
            position: relative;
            z-index: 1;
        }

        .metrics-card {
            text-align: center;
            padding: var(--spacing-lg);
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition);
        }

        .metrics-card:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.15);
        }

        .metrics-card__icon {
            font-size: 1.4rem;
            color: var(--color-accent);
            margin-bottom: var(--spacing-sm);
        }

        .metrics-card__number {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .metrics-card__number span {
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.5);
            margin-left: 2px;
        }

        .metrics-card__label {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 4px;
        }

        .metrics-card__status {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.7rem;
            color: var(--color-online);
            margin-top: 8px;
        }

        .metrics-card__status-dot {
            width: 6px;
            height: 6px;
            background: var(--color-online);
            border-radius: 50%;
        }

        /* ===== Service Matrix ===== */
        .service-matrix {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
        }

        .service-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(255, 77, 46, 0.2);
        }

        .service-card__icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(255, 77, 46, 0.1);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: var(--spacing-sm);
        }

        .service-card__icon--green {
            background: rgba(46, 204, 154, 0.1);
            color: var(--color-online-dark);
        }

        .service-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text);
        }

        .service-card p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        .service-card__tag {
            display: inline-block;
            font-size: 0.72rem;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            background: rgba(255, 77, 46, 0.08);
            color: var(--color-accent);
            width: fit-content;
            font-weight: 600;
        }

        .service-card--wide {
            grid-column: 1 / -1;
            background: var(--color-primary);
            color: #fff;
            border: none;
        }

        .service-card--wide h3 {
            color: #fff;
            font-size: 1.3rem;
        }

        .service-card--wide p {
            color: rgba(255, 255, 255, 0.7);
        }

        .service-card--wide .service-card__tag {
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.75);
        }

        .service-card--wide .service-card__icon {
            background: rgba(255, 255, 255, 0.08);
            color: var(--color-accent);
        }

        /* ===== Comparison ===== */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
        }

        .comparison-card {
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            border: 1px solid var(--color-border);
            background: #fff;
            transition: all var(--transition);
        }

        .comparison-card:hover {
            box-shadow: var(--shadow-md);
        }

        .comparison-card--old {
            background: #FAFAF8;
            border-color: var(--color-border);
        }

        .comparison-card--new {
            background: #fff;
            border-color: rgba(46, 204, 154, 0.3);
            box-shadow: 0 4px 20px rgba(46, 204, 154, 0.08);
        }

        .comparison-card__header {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-lg);
            font-weight: 700;
            font-size: 1.05rem;
        }

        .comparison-card__header i {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
        }

        .comparison-card--old .comparison-card__header i {
            background: rgba(155, 155, 155, 0.12);
            color: var(--color-gray);
        }

        .comparison-card--new .comparison-card__header i {
            background: rgba(46, 204, 154, 0.12);
            color: var(--color-online-dark);
        }

        .comparison-card__list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .comparison-card__list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--color-gray-dark);
            line-height: 1.7;
        }

        .comparison-card--old .comparison-card__list li i {
            color: var(--color-gray);
            font-size: 0.8rem;
            margin-top: 4px;
        }

        .comparison-card--new .comparison-card__list li i {
            color: var(--color-online);
            font-size: 0.8rem;
            margin-top: 4px;
        }

        .comparison-card__highlight {
            display: inline-block;
            background: rgba(255, 77, 46, 0.08);
            color: var(--color-accent);
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.85rem;
        }

        .comparison-card__highlight--green {
            background: rgba(46, 204, 154, 0.1);
            color: var(--color-online-dark);
        }

        /* ===== Brand Intro ===== */
        .brand-intro {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl);
            border: 1px solid var(--color-border);
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
        }

        .brand-intro h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: var(--spacing-lg);
            color: var(--color-text);
        }

        .brand-intro p {
            font-size: 0.95rem;
            line-height: 2;
            color: var(--color-text-secondary);
            text-align: left;
            max-width: 760px;
            margin: 0 auto;
        }

        /* ===== Timeline ===== */
        .timeline {
            position: relative;
            max-width: 850px;
            margin: 0 auto;
            padding-left: 32px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--color-border);
            border-radius: 3px;
        }

        .timeline__item {
            position: relative;
            padding-bottom: var(--spacing-xl);
        }

        .timeline__item:last-child {
            padding-bottom: 0;
        }

        .timeline__item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 6px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--color-accent);
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.2);
            z-index: 1;
        }

        .timeline__item--green::before {
            background: var(--color-online);
            box-shadow: 0 0 0 3px rgba(46, 204, 154, 0.2);
        }

        .timeline__year {
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }

        .timeline__title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 4px;
        }

        .timeline__desc {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ===== News Section ===== */
        .news-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
        }

        .news-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(255, 77, 46, 0.15);
        }

        .news-card__date {
            font-size: 0.75rem;
            color: var(--color-gray);
            font-weight: 600;
        }

        .news-card__title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.5;
        }

        .news-card__summary {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
            flex: 1;
        }

        .news-card__btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-accent);
            background: none;
            padding: 0;
            width: fit-content;
            border: none;
        }

        .news-card__btn:hover {
            color: var(--color-accent-hover);
            gap: 10px;
        }

        .news-card__btn i {
            font-size: 0.65rem;
            transition: transform var(--transition);
        }

        .news-card__btn:hover i {
            transform: translateX(2px);
        }

        /* ===== Platform Guarantee ===== */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .guarantee-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--spacing-xl);
            text-align: center;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }

        .guarantee-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .guarantee-card__icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #F7F6F2;
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin: 0 auto var(--spacing-md);
            transition: all var(--transition);
        }

        .guarantee-card:hover .guarantee-card__icon {
            background: rgba(255, 77, 46, 0.1);
        }

        .guarantee-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }

        .guarantee-card p {
            font-size: 0.82rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ===== Quick FAQ ===== */
        .quick-faq {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
        }

        .quick-faq__item {
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }

        .quick-faq__item:hover {
            box-shadow: var(--shadow-sm);
        }

        .quick-faq__q {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--color-text);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .quick-faq__q i {
            color: var(--color-accent);
            font-size: 0.75rem;
            margin-top: 5px;
            flex-shrink: 0;
        }

        .quick-faq__a {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-top: var(--spacing-sm);
            padding-left: 20px;
        }

        /* ===== FAQ Accordion ===== */
        .faq-accordion {
            max-width: 850px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .faq-accordion__item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-accordion__item.is-open {
            border-color: rgba(255, 77, 46, 0.2);
            box-shadow: var(--shadow-md);
        }

        .faq-accordion__btn {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            padding: var(--spacing-lg);
            background: none;
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text);
            text-align: left;
            border: none;
            cursor: pointer;
        }

        .faq-accordion__btn:hover {
            color: var(--color-accent);
        }

        .faq-accordion__icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: #F7F6F2;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: var(--color-gray-dark);
            transition: all var(--transition);
        }

        .faq-accordion__item.is-open .faq-accordion__icon {
            background: rgba(255, 77, 46, 0.1);
            color: var(--color-accent);
            transform: rotate(45deg);
        }

        .faq-accordion__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 var(--spacing-lg);
        }

        .faq-accordion__item.is-open .faq-accordion__answer {
            max-height: 500px;
            padding-bottom: var(--spacing-lg);
        }

        .faq-accordion__answer p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            border-top: 1px solid var(--color-border);
            padding-top: var(--spacing-md);
        }

        /* ===== Lead Form ===== */
        .lead-form {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .lead-form::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -15%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 77, 46, 0.08);
            pointer-events: none;
        }

        .lead-form__content h2 {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: var(--spacing-md);
        }

        .lead-form__content p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .lead-form__content ul {
            list-style: none;
            margin-top: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .lead-form__content ul li {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.88rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .lead-form__content ul li i {
            color: var(--color-online);
            font-size: 0.7rem;
        }

        .lead-form__box {
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--spacing-xl);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
            position: relative;
            z-index: 1;
        }

        .lead-form__box h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
        }

        .lead-form__box textarea {
            min-height: 80px;
            resize: vertical;
        }

        /* ===== Scene Entry ===== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .scene-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            text-align: center;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            cursor: pointer;
        }

        .scene-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(255, 77, 46, 0.18);
        }

        .scene-card__icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(255, 77, 46, 0.08);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin: 0 auto var(--spacing-sm);
        }

        .scene-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .scene-card p {
            font-size: 0.78rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ===== Global Nodes ===== */
        .nodes-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }

        .nodes-section__map {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            border: 1px solid var(--color-border);
            min-height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .nodes-section__map::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/d450cdafe5a08111.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
        }

        .node-pin {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--color-gray-dark);
        }

        .node-pin__dot {
            width: 14px;
            height: 14px;
            background: var(--color-accent);
            border-radius: 50%;
            border: 3px solid rgba(255, 77, 46, 0.25);
            animation: nodePulse 2.5s infinite;
        }

        .node-pin--green .node-pin__dot {
            background: var(--color-online);
            border-color: rgba(46, 204, 154, 0.25);
            animation-delay: 1.2s;
        }

        @keyframes nodePulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 77, 46, 0.3);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(255, 77, 46, 0);
            }
        }

        .nodes-section__list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .nodes-section__list-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            background: #fff;
            padding: var(--spacing-md) var(--spacing-lg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--color-gray-dark);
            transition: all var(--transition);
        }

        .nodes-section__list-item:hover {
            border-color: rgba(255, 77, 46, 0.2);
            background: #fff;
        }

        .nodes-section__list-item i {
            color: var(--color-online);
            font-size: 0.7rem;
        }

        /* ===== Partners ===== */
        .partners-row {
            display: flex;
            align-items: center;
            gap: var(--spacing-xl);
            flex-wrap: wrap;
            justify-content: center;
        }

        .partners-row__item {
            background: #fff;
            padding: var(--spacing-md) var(--spacing-xl);
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            font-weight: 700;
            color: var(--color-gray);
            font-size: 0.85rem;
            transition: all var(--transition);
            cursor: default;
        }

        .partners-row__item:hover {
            border-color: rgba(255, 77, 46, 0.15);
            color: var(--color-gray-dark);
            box-shadow: var(--shadow-sm);
        }

        /* ===== Latest Updates ===== */
        .updates-list {
            display: flex;
            flex-direction: column;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
        }

        .updates-list__row {
            display: grid;
            grid-template-columns: 80px 1fr 100px;
            gap: var(--spacing-lg);
            padding: var(--spacing-md) var(--spacing-lg);
            border-bottom: 1px solid var(--color-border);
            align-items: center;
            transition: all var(--transition);
        }

        .updates-list__row:last-child {
            border-bottom: none;
        }

        .updates-list__row:hover {
            background: #FAFAF8;
        }

        .updates-list__date {
            font-size: 0.75rem;
            color: var(--color-gray);
            font-weight: 600;
        }

        .updates-list__title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
        }

        .updates-list__status {
            font-size: 0.75rem;
            font-weight: 700;
            text-align: right;
            color: var(--color-online-dark);
            display: flex;
            align-items: center;
            gap: 4px;
            justify-content: flex-end;
        }

        .updates-list__status i {
            font-size: 0.6rem;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.65);
            padding-top: var(--spacing-2xl);
        }

        .footer__top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer__brand h3 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }

        .footer__brand p {
            font-size: 0.82rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 300px;
        }

        .footer__column h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-md);
        }

        .footer__column ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .footer__column ul li a {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition);
        }

        .footer__column ul li a:hover {
            color: var(--color-accent);
        }

        .footer__bottom {
            padding: var(--spacing-lg) 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer__bottom-links {
            display: flex;
            gap: var(--spacing-md);
            align-items: center;
        }

        .footer__bottom-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.75rem;
        }

        .footer__bottom-links a:hover {
            color: var(--color-accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero__inner {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }

            .hero {
                min-height: auto;
                padding: var(--spacing-2xl) 0;
            }

            .metrics-dashboard__grid {
                grid-template-columns: repeat(3, 1fr);
                gap: var(--spacing-md);
            }

            .service-matrix {
                grid-template-columns: 1fr;
            }

            .service-card--wide {
                grid-column: 1 / -1;
            }

            .comparison-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .news-list {
                grid-template-columns: 1fr;
            }

            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .quick-faq {
                grid-template-columns: 1fr;
            }

            .lead-form {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }

            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .nodes-section {
                grid-template-columns: 1fr;
            }

            .footer__top {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }

            .footer__brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .header__brand-row {
                flex-wrap: wrap;
                gap: var(--spacing-sm);
            }

            .header__search {
                order: 10;
                width: 100%;
                max-width: 100%;
                min-width: auto;
            }

            .header__actions {
                margin-left: auto;
            }

            .header__burger {
                display: block;
            }

            .header__nav-row {
                display: none;
                border-top: none;
            }

            .header__nav-row.is-open {
                display: block;
                border-top: 1px solid rgba(255, 255, 255, 0.06);
            }

            .header__nav-grid {
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                padding: var(--spacing-sm) 0;
                overflow-x: visible;
            }

            .header__nav-item {
                flex-direction: row;
                align-items: center;
                gap: 12px;
                padding: 12px 16px;
                font-size: 0.9rem;
                white-space: normal;
                border-radius: 0;
            }

            .header__nav-item i {
                font-size: 1rem;
                width: 24px;
                text-align: center;
            }

            .header__nav-item.is-active::after {
                display: none;
            }

            .header__nav-item.is-active {
                background: rgba(255, 77, 46, 0.12);
            }

            .metrics-dashboard__grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .guarantee-grid {
                grid-template-columns: 1fr;
            }

            .scene-grid {
                grid-template-columns: 1fr;
            }

            .footer__top {
                grid-template-columns: 1fr;
            }

            .updates-list__row {
                grid-template-columns: 60px 1fr;
                gap: var(--spacing-sm);
                padding: var(--spacing-sm) var(--spacing-md);
            }

            .updates-list__status {
                grid-column: 1 / -1;
                text-align: left;
                justify-content: flex-start;
            }

            .hero__whitepaper-toc {
                grid-template-columns: 1fr;
            }

            .hero__whitepaper-cover {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }

            .hero__whitepaper-thumb {
                width: 100px;
                height: 130px;
            }

            .comparison-grid {
                gap: var(--spacing-md);
            }

            .lead-form {
                padding: var(--spacing-xl);
            }

            .section {
                padding: var(--spacing-2xl) 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 var(--spacing-md);
            }

            .header__logo {
                font-size: 1.15rem;
            }

            .header__logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.75rem;
            }

            .header__cta-btn {
                padding: 8px 14px;
                font-size: 0.8rem;
            }

            .hero__title {
                font-size: 1.5rem;
            }

            .hero__desc {
                font-size: 0.9rem;
                line-height: 1.8;
            }

            .hero__cta-group {
                flex-direction: column;
                gap: var(--spacing-sm);
            }

            .btn {
                padding: 12px 20px;
                font-size: 0.85rem;
                justify-content: center;
            }

            .hero__stats-row {
                gap: var(--spacing-lg);
            }

            .hero__stat-number {
                font-size: 1.2rem;
            }

            .metrics-dashboard__grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }

            .metrics-card {
                padding: var(--spacing-md);
            }

            .metrics-card__number {
                font-size: 1.5rem;
            }

            .section__title {
                font-size: 1.3rem;
            }

            .service-card {
                padding: var(--spacing-lg);
            }

            .comparison-card {
                padding: var(--spacing-lg);
            }

            .brand-intro {
                padding: var(--spacing-lg);
            }

            .news-card {
                padding: var(--spacing-md);
            }

            .guarantee-card {
                padding: var(--spacing-lg);
            }

            .faq-accordion__btn {
                padding: var(--spacing-md);
                font-size: 0.88rem;
            }

            .faq-accordion__answer {
                padding: 0 var(--spacing-md);
            }

            .lead-form {
                padding: var(--spacing-lg);
                border-radius: var(--radius-md);
            }

            .lead-form__box {
                padding: var(--spacing-lg);
            }

            .footer__bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
            }

            .updates-list__row {
                grid-template-columns: 1fr;
                gap: 4px;
            }

            .updates-list__status {
                grid-column: auto;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #1E1F24;
            --color-primary-light: #2A2B32;
            --color-accent: #FF4D2E;
            --color-accent-hover: #E63E20;
            --color-online: #2ECC9A;
            --color-online-dark: #27AE80;
            --color-bg: #F7F6F2;
            --color-card: #FFFFFF;
            --color-border: #E5E7EB;
            --color-gray: #9CA3AF;
            --color-gray-light: #D1D5DB;
            --color-gray-dark: #4B5563;
            --color-text: #1E1F24;
            --color-text-secondary: #6B7280;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 50px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --font-base: 16px;
            --line-height: 1.8;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: var(--font-base);
        }

        body {
            font-family: var(--font-family);
            line-height: var(--line-height);
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--color-accent-hover);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            width: 100%;
            background: #fff;
            transition: border-color var(--transition), box-shadow var(--transition);
            outline: none;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.12);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }

        .container--narrow {
            max-width: 900px;
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .header__brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            padding: var(--spacing-md) 0;
            flex-wrap: wrap;
        }

        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .header__logo:hover {
            color: #fff;
        }

        .header__logo-icon {
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
            position: relative;
        }

        .header__logo-icon::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 10px;
            height: 10px;
            background: var(--color-online);
            border-radius: 50%;
            border: 2px solid var(--color-primary);
            animation: livePulse 2s infinite;
        }

        @keyframes livePulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(1.3); }
        }

        .header__search {
            flex: 1;
            max-width: 360px;
            min-width: 200px;
            position: relative;
        }

        .header__search input {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-full);
            color: #fff;
            padding: 10px 18px 10px 40px;
            transition: all var(--transition);
        }

        .header__search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .header__search input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.15);
        }

        .header__search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.85rem;
            pointer-events: none;
        }

        .header__actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
        }

        .header__cta-btn {
            background: var(--color-accent);
            color: #fff;
            padding: 9px 20px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .header__cta-btn:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255, 77, 46, 0.35);
        }

        .header__burger {
            display: none;
            background: transparent;
            color: #fff;
            font-size: 1.4rem;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .header__nav-row {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 0;
            transition: all var(--transition);
        }

        .header__nav-grid {
            display: flex;
            align-items: center;
            justify-content: flex-start;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
            padding: var(--spacing-xs) 0;
        }

        .header__nav-item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.88rem;
            font-weight: 500;
            white-space: nowrap;
            position: relative;
            transition: all var(--transition);
        }

        .header__nav-item i {
            font-size: 0.8rem;
            color: var(--color-gray);
            transition: color var(--transition);
        }

        .header__nav-item:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .header__nav-item:hover i {
            color: var(--color-accent);
        }

        .header__nav-item.is-active {
            color: #fff;
            background: rgba(255, 77, 46, 0.15);
        }

        .header__nav-item.is-active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 1px;
        }

        .header__nav-item.is-active i {
            color: var(--color-accent);
        }

        /* ===== Page Hero (Compact Category Hero) ===== */
        .page-hero {
            background: var(--color-primary);
            padding: var(--spacing-2xl) 0 var(--spacing-2xl);
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(255, 77, 46, 0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 80%, rgba(46, 204, 154, 0.08) 0%, transparent 55%);
            pointer-events: none;
        }

        .page-hero__inner {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: var(--spacing-lg);
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb__sep {
            color: rgba(255, 255, 255, 0.25);
        }

        .breadcrumb__current {
            color: #fff;
        }

        .page-hero__title {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: var(--spacing-md);
        }

        .page-hero__title span {
            color: var(--color-accent);
        }

        .page-hero__desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.65);
            max-width: 650px;
            line-height: 1.85;
        }

        /* ===== Section Common ===== */
        .section {
            padding: var(--spacing-3xl) 0;
        }

        .section--tight {
            padding: var(--spacing-2xl) 0;
        }

        .section--alt {
            background: var(--color-card);
        }

        .section--dark {
            background: var(--color-primary);
        }

        .section__head {
            margin-bottom: var(--spacing-xl);
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .section__label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 1.2px;
            margin-bottom: var(--spacing-sm);
        }

        .section__label i {
            font-size: 0.7rem;
        }

        .section__title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.4;
        }

        .section--dark .section__title {
            color: #fff;
        }

        .section__desc {
            font-size: 0.98rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 560px;
        }

        .section--dark .section__desc {
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== Masonry Grid ===== */
        .masonry-grid {
            columns: 3;
            column-gap: var(--spacing-lg);
        }

        .masonry-item {
            break-inside: avoid;
            margin-bottom: var(--spacing-lg);
            background: var(--color-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(0, 0, 0, 0.05);
            overflow: hidden;
            transition: all var(--transition);
        }

        .masonry-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(255, 77, 46, 0.2);
        }

        .masonry-item__image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
        }

        .masonry-item__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .masonry-item:hover .masonry-item__image img {
            transform: scale(1.05);
        }

        .masonry-item__badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            letter-spacing: 0.5px;
        }

        .masonry-item__tag {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(30, 31, 36, 0.75);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            backdrop-filter: blur(4px);
        }

        .masonry-item__body {
            padding: var(--spacing-lg);
        }

        .masonry-item__meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 0.8rem;
            color: var(--color-gray);
            margin-bottom: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .masonry-item__meta i {
            font-size: 0.7rem;
            color: var(--color-accent);
        }

        .masonry-item__title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.45;
            margin-bottom: var(--spacing-sm);
        }

        .masonry-item__excerpt {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: var(--spacing-md);
        }

        .masonry-item__link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            transition: all var(--transition);
        }

        .masonry-item__link:hover {
            color: var(--color-accent-hover);
            gap: 10px;
        }

        /* ===== Stats Bar ===== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }

        .stats-bar__item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            text-align: center;
            border: 1px solid rgba(0, 0, 0, 0.05);
            box-shadow: var(--shadow-sm);
        }

        .stats-bar__number {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stats-bar__number span {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-gray-dark);
        }

        .stats-bar__label {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        /* ===== Feature Case ===== */
        .feature-case {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }

        .feature-case__image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .feature-case__image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        .feature-case__content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: var(--spacing-md);
            line-height: 1.4;
        }

        .feature-case__content p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin-bottom: var(--spacing-md);
        }

        .feature-case__metrics {
            display: flex;
            gap: var(--spacing-xl);
            flex-wrap: wrap;
            margin-top: var(--spacing-md);
        }

        .feature-case__metric {
            text-align: left;
        }

        .feature-case__metric-value {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.2;
        }

        .feature-case__metric-label {
            font-size: 0.8rem;
            color: var(--color-gray);
        }

        /* ===== Tags Cloud ===== */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .tags-cloud__tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            background: var(--color-card);
            border: 1px solid var(--color-border);
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            font-weight: 500;
            transition: all var(--transition);
            cursor: pointer;
        }

        .tags-cloud__tag:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(255, 77, 46, 0.04);
        }

        /* ===== Category Entry Grid ===== */
        .category-entry-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: var(--spacing-md);
        }

        .category-entry-card {
            background: var(--color-card);
            border: 1px solid rgba(0, 0, 0, 0.05);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .category-entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(255, 77, 46, 0.25);
        }

        .category-entry-card i {
            font-size: 1.5rem;
            color: var(--color-accent);
            margin-bottom: var(--spacing-sm);
            display: block;
        }

        .category-entry-card span {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
        }

        /* ===== Mini CTA ===== */
        .mini-cta {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .mini-cta__text h3 {
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
        }

        .mini-cta__text p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
        }

        .mini-cta__btn {
            background: var(--color-accent);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .mini-cta__btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 77, 46, 0.4);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--color-primary);
            padding: var(--spacing-3xl) 0 var(--spacing-lg);
            color: rgba(255, 255, 255, 0.6);
        }

        .footer__top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-2xl);
            padding-bottom: var(--spacing-2xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: var(--spacing-lg);
        }

        .footer__brand h3 {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }

        .footer__brand p {
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .footer__column h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: var(--spacing-md);
        }

        .footer__column ul {
            list-style: none;
        }

        .footer__column ul li {
            margin-bottom: var(--spacing-sm);
        }

        .footer__column a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition);
        }

        .footer__column a:hover {
            color: var(--color-accent);
        }

        .footer__bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            font-size: 0.85rem;
        }

        .footer__bottom-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .footer__bottom-links a {
            color: rgba(255, 255, 255, 0.6);
        }

        .footer__bottom-links a:hover {
            color: var(--color-accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .masonry-grid {
                columns: 2;
            }
            .category-entry-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-case {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .header__search {
                display: none;
            }
            .header__burger {
                display: block;
            }
            .header__nav-row {
                display: none;
            }
            .header__nav-row.is-open {
                display: block;
                padding: var(--spacing-sm) 0 var(--spacing-md);
            }
            .header__nav-grid {
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
            }
            .header__nav-item {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .header__nav-item.is-active::after {
                display: none;
            }
            .header__nav-item.is-active {
                border-left: 3px solid var(--color-accent);
            }
            .footer__top {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xl);
            }
            .masonry-grid {
                columns: 1;
            }
            .category-entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
            .page-hero__title {
                font-size: 1.6rem;
            }
            .section__title {
                font-size: 1.4rem;
            }
            .mini-cta {
                flex-direction: column;
                text-align: center;
                align-items: stretch;
            }
            .mini-cta__btn {
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .header__brand-row {
                gap: var(--spacing-sm);
            }
            .header__logo {
                font-size: 1.2rem;
            }
            .header__logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.75rem;
            }
            .header__cta-btn {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .footer__top {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
            }
            .stats-bar__number {
                font-size: 1.6rem;
            }
            .category-entry-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }
            .section {
                padding: var(--spacing-2xl) 0;
            }
            .page-hero {
                padding: var(--spacing-xl) 0;
            }
            .masonry-item__body {
                padding: var(--spacing-md);
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1E1F24;
            --color-primary-light: #2A2B32;
            --color-accent: #FF4D2E;
            --color-accent-hover: #E63E20;
            --color-online: #2ECC9A;
            --color-online-dark: #27AE80;
            --color-bg: #F7F6F2;
            --color-card: #FFFFFF;
            --color-border: #E5E7EB;
            --color-gray: #9CA3AF;
            --color-gray-light: #D1D5DB;
            --color-gray-dark: #4B5563;
            --color-text: #1E1F24;
            --color-text-secondary: #6B7280;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 50px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --font-base: 16px;
            --line-height: 1.8;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: var(--font-base);
        }

        body {
            font-family: var(--font-family);
            line-height: var(--line-height);
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-accent-hover);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            width: 100%;
            background: #fff;
            transition: border-color var(--transition), box-shadow var(--transition);
            outline: none;
            box-sizing: border-box;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.12);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
            box-sizing: border-box;
        }
        .container--narrow {
            max-width: 900px;
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .header__brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            padding: var(--spacing-md) 0;
            flex-wrap: wrap;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .header__logo:hover {
            color: #fff;
        }
        .header__logo-icon {
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
            position: relative;
        }
        .header__logo-icon::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 10px;
            height: 10px;
            background: var(--color-online);
            border-radius: 50%;
            border: 2px solid var(--color-primary);
            animation: livePulse 2s infinite;
        }
        @keyframes livePulse {
            0% { box-shadow: 0 0 0 0 rgba(46, 204, 154, 0.6); }
            70% { box-shadow: 0 0 0 8px rgba(46, 204, 154, 0); }
            100% { box-shadow: 0 0 0 0 rgba(46, 204, 154, 0); }
        }
        .header__search {
            flex: 1;
            max-width: 360px;
            min-width: 200px;
            position: relative;
        }
        .header__search input {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-full);
            color: #fff;
            padding: 10px 18px 10px 40px;
            transition: all var(--transition);
        }
        .header__search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .header__search input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.15);
        }
        .header__search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.5);
            pointer-events: none;
            font-size: 0.85rem;
        }
        .header__actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }
        .header__cta-btn {
            background: var(--color-accent);
            color: #fff;
            padding: 10px 22px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .header__cta-btn:hover {
            background: var(--color-accent-hover);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 77, 46, 0.35);
            transform: translateY(-1px);
        }
        .header__burger {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: all var(--transition);
        }
        .header__burger:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .header__nav-row {
            padding: 0 0 var(--spacing-md) 0;
        }
        .header__nav-grid {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            align-items: center;
        }
        .header__nav-item {
            display: flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, 0.75);
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.88rem;
            font-weight: 500;
            transition: all var(--transition);
            border-bottom: 2px solid transparent;
        }
        .header__nav-item i {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }
        .header__nav-item:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .header__nav-item:hover i {
            color: var(--color-accent);
        }
        .header__nav-item.is-active {
            color: #fff;
            background: rgba(255, 77, 46, 0.18);
            border-bottom-color: var(--color-accent);
            font-weight: 600;
        }
        .header__nav-item.is-active i {
            color: var(--color-accent);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-accent);
        }
        .breadcrumb a:hover {
            color: var(--color-accent-hover);
            text-decoration: underline;
        }
        .breadcrumb__sep {
            color: var(--color-gray-light);
        }
        .breadcrumb__current {
            color: var(--color-text);
            font-weight: 600;
        }

        /* ===== Category Hero ===== */
        .category-hero {
            background: linear-gradient(135deg, #1E1F24 0%, #2A2B32 50%, #3A1F1A 100%);
            color: #fff;
            padding: var(--spacing-2xl) 0 var(--spacing-3xl);
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 77, 46, 0.08);
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: 20%;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(46, 204, 154, 0.06);
            pointer-events: none;
        }
        .category-hero__inner {
            position: relative;
            z-index: 1;
        }
        .category-hero .breadcrumb {
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: var(--spacing-lg);
        }
        .category-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }
        .category-hero .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .category-hero .breadcrumb__current {
            color: #fff;
        }
        .category-hero .breadcrumb__sep {
            color: rgba(255, 255, 255, 0.35);
        }
        .category-hero h1 {
            font-size: 2.2rem;
            font-weight: 700;
            margin: 0 0 var(--spacing-md) 0;
            letter-spacing: 0.5px;
        }
        .category-hero__desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 700px;
            margin: 0;
            line-height: 1.9;
        }
        .category-hero__stats {
            display: flex;
            gap: var(--spacing-lg);
            margin-top: var(--spacing-xl);
            flex-wrap: wrap;
        }
        .category-hero__stat {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .category-hero__stat-num {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-accent);
        }
        .category-hero__stat-label {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.55);
        }

        /* ===== Section Base ===== */
        .section {
            padding: var(--spacing-3xl) 0;
        }
        .section--alt {
            background: #fff;
        }
        .section--dark {
            background: var(--color-primary);
            color: #fff;
        }
        .section__header {
            margin-bottom: var(--spacing-2xl);
        }
        .section__label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 1.2px;
            margin-bottom: var(--spacing-sm);
        }
        .section__label i {
            font-size: 0.7rem;
        }
        .section__title {
            font-size: 1.75rem;
            font-weight: 700;
            margin: 0 0 var(--spacing-md) 0;
            color: var(--color-text);
            line-height: 1.4;
        }
        .section--dark .section__title {
            color: #fff;
        }
        .section__desc {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 680px;
            margin: 0;
            line-height: 1.9;
        }
        .section--dark .section__desc {
            color: rgba(255, 255, 255, 0.65);
        }

        /* ===== Solutions Grid (双列卡片) ===== */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
        }
        .solution-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .solution-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(255, 77, 46, 0.25);
        }
        .solution-card__thumb {
            position: relative;
            overflow: hidden;
            height: 200px;
            flex-shrink: 0;
        }
        .solution-card__thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .solution-card:hover .solution-card__thumb img {
            transform: scale(1.04);
        }
        .solution-card__thumb-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--color-accent);
            color: #fff;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
        }
        .solution-card__body {
            padding: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .solution-card__title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 var(--spacing-sm) 0;
            line-height: 1.4;
        }
        .solution-card__summary {
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin: 0 0 var(--spacing-md) 0;
            flex: 1;
        }
        .solution-card__meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--color-border);
        }
        .solution-card__date {
            font-size: 0.78rem;
            color: var(--color-gray);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .solution-card__tag {
            background: #F0F1F3;
            color: var(--color-gray-dark);
            padding: 3px 10px;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 500;
        }
        .solution-card__link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: gap var(--transition);
        }
        .solution-card__link:hover {
            gap: 8px;
            color: var(--color-accent-hover);
        }

        /* ===== Featured / Editor Picks ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }
        .featured-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .featured-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(46, 204, 154, 0.35);
            transform: translateY(-2px);
        }
        .featured-card__icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(46, 204, 154, 0.1);
            color: var(--color-online-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            margin-bottom: var(--spacing-md);
        }
        .featured-card__title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 var(--spacing-sm) 0;
        }
        .featured-card__text {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* ===== Tag Cloud ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }
        .tag-cloud__item {
            background: #fff;
            border: 1px solid var(--color-border);
            color: var(--color-gray-dark);
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .tag-cloud__item i {
            font-size: 0.7rem;
            color: var(--color-accent);
        }
        .tag-cloud__item:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(255, 77, 46, 0.04);
            transform: translateY(-1px);
        }

        /* ===== News Brief ===== */
        .brief-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }
        .brief-item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            padding: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .brief-item:hover {
            box-shadow: var(--shadow-md);
        }
        .brief-item__date {
            font-size: 0.75rem;
            color: var(--color-gray);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: var(--spacing-sm);
        }
        .brief-item__date i {
            color: var(--color-online);
        }
        .brief-item__title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 var(--spacing-sm) 0;
            line-height: 1.5;
        }
        .brief-item__text {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0;
            flex: 1;
        }

        /* ===== Mini FAQ ===== */
        .faq-mini {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
        }
        .faq-mini__item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .faq-mini__item:hover {
            border-color: rgba(255, 77, 46, 0.25);
            box-shadow: var(--shadow-md);
        }
        .faq-mini__q {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 var(--spacing-sm) 0;
            display: flex;
            gap: 8px;
            align-items: flex-start;
        }
        .faq-mini__q i {
            color: var(--color-accent);
            font-size: 0.8rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .faq-mini__a {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin: 0;
        }

        /* ===== Lead Form ===== */
        .lead-form-section {
            background: linear-gradient(135deg, #1E1F24 0%, #2A2B32 60%, #3A1F1A 100%);
            color: #fff;
            padding: var(--spacing-3xl) 0;
            position: relative;
            overflow: hidden;
        }
        .lead-form-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -80px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: rgba(255, 77, 46, 0.06);
        }
        .lead-form-section__wrapper {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }
        .lead-form-section__info h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 var(--spacing-md) 0;
        }
        .lead-form-section__info p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            line-height: 1.9;
            margin: 0;
        }
        .lead-form-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-lg);
        }
        .lead-form-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 var(--spacing-md) 0;
        }
        .lead-form-card .form-group {
            margin-bottom: var(--spacing-md);
        }
        .lead-form-card label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-gray-dark);
            margin-bottom: var(--spacing-xs);
        }
        .lead-form-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .lead-form-card .btn-primary {
            width: 100%;
            padding: 14px 24px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            color: #fff;
            transition: all var(--transition);
        }
        .lead-form-card .btn-primary:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 4px 16px rgba(255, 77, 46, 0.3);
            transform: translateY(-1px);
        }

        /* ===== Category Entry ===== */
        .category-entry {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: var(--spacing-md);
        }
        .category-entry__item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg) var(--spacing-md);
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: var(--spacing-sm);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .category-entry__item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .category-entry__icon {
            width: 46px;
            height: 46px;
            border-radius: var(--radius-md);
            background: rgba(255, 77, 46, 0.08);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            transition: all var(--transition);
        }
        .category-entry__item:hover .category-entry__icon {
            background: var(--color-accent);
            color: #fff;
        }
        .category-entry__label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-3xl) 0 var(--spacing-lg);
        }
        .footer__top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-2xl);
            padding-bottom: var(--spacing-2xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer__brand h3 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 0 var(--spacing-sm) 0;
        }
        .footer__brand p {
            font-size: 0.88rem;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.55);
            margin: 0;
        }
        .footer__column h4 {
            color: #fff;
            font-size: 0.9rem;
            font-weight: 700;
            margin: 0 0 var(--spacing-md) 0;
        }
        .footer__column ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .footer__column ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            transition: color var(--transition);
        }
        .footer__column ul li a:hover {
            color: var(--color-accent);
        }
        .footer__bottom {
            padding-top: var(--spacing-lg);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer__bottom-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }
        .footer__bottom-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.78rem;
        }
        .footer__bottom-links a:hover {
            color: var(--color-accent);
        }

        /* ===== Buttons Global ===== */
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 77, 46, 0.3);
            transform: translateY(-1px);
        }
        .btn-secondary {
            background: transparent;
            border: 1px solid var(--color-border);
            color: var(--color-text);
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }
        .btn-secondary:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(255, 77, 46, 0.04);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .solutions-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .brief-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-entry {
                grid-template-columns: repeat(3, 1fr);
            }
            .lead-form-section__wrapper {
                grid-template-columns: 1fr;
            }
            .footer__top {
                grid-template-columns: 1fr 1fr;
            }
            .header__nav-grid {
                gap: var(--spacing-xs);
            }
            .header__nav-item {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 768px) {
            .header__brand-row {
                gap: var(--spacing-sm);
            }
            .header__search {
                max-width: 100%;
                order: 3;
                flex-basis: 100%;
                min-width: auto;
            }
            .header__nav-grid {
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: var(--spacing-xs);
                -webkit-overflow-scrolling: touch;
                scrollbar-width: thin;
            }
            .header__nav-item {
                white-space: nowrap;
                flex-shrink: 0;
            }
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero__stats {
                gap: var(--spacing-md);
            }
            .section {
                padding: var(--spacing-2xl) 0;
            }
            .section__title {
                font-size: 1.4rem;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .brief-list {
                grid-template-columns: 1fr;
            }
            .faq-mini {
                grid-template-columns: 1fr;
            }
            .footer__top {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .solution-card__thumb {
                height: 160px;
            }
        }

        @media (max-width: 520px) {
            .header__logo {
                font-size: 1.2rem;
            }
            .header__cta-btn {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .header__logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.75rem;
            }
            .category-hero h1 {
                font-size: 1.4rem;
            }
            .category-hero__desc {
                font-size: 0.92rem;
            }
            .category-hero__stat-num {
                font-size: 1.2rem;
            }
            .category-entry {
                grid-template-columns: repeat(2, 1fr);
            }
            .section__title {
                font-size: 1.2rem;
            }
            .solution-card__body {
                padding: var(--spacing-md);
            }
            .solution-card__thumb {
                height: 140px;
            }
            .footer__bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-xs);
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1E1F24;
            --color-primary-light: #2A2B32;
            --color-accent: #FF4D2E;
            --color-accent-hover: #E63E20;
            --color-online: #2ECC9A;
            --color-online-dark: #27AE80;
            --color-bg: #F7F6F2;
            --color-card: #FFFFFF;
            --color-border: #E5E7EB;
            --color-gray: #9CA3AF;
            --color-gray-light: #D1D5DB;
            --color-gray-dark: #4B5563;
            --color-text: #1E1F24;
            --color-text-secondary: #6B7280;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 50px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --font-base: 16px;
            --line-height: 1.8;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: var(--font-base);
        }
        body {
            font-family: var(--font-family);
            line-height: var(--line-height);
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-accent-hover);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            width: 100%;
            background: #fff;
            transition: border-color var(--transition), box-shadow var(--transition);
            outline: none;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.12);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }
        .container--narrow {
            max-width: 900px;
        }
        /* ===== Header & Navigation ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .header__brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            padding: var(--spacing-md) 0;
            flex-wrap: wrap;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .header__logo:hover {
            color: #fff;
        }
        .header__logo-icon {
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
            position: relative;
        }
        .header__logo-icon::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 10px;
            height: 10px;
            background: var(--color-online);
            border-radius: 50%;
            border: 2px solid var(--color-primary);
            animation: livePulse 2s infinite;
        }
        @keyframes livePulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }
        .header__search {
            flex: 1;
            max-width: 360px;
            min-width: 200px;
            position: relative;
        }
        .header__search input {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-full);
            color: #fff;
            padding: 10px 18px 10px 40px;
            transition: all var(--transition);
        }
        .header__search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .header__search input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.15);
        }
        .header__search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.85rem;
            pointer-events: none;
        }
        .header__actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }
        .header__cta-btn {
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-full);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: all var(--transition);
        }
        .header__cta-btn:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255, 77, 46, 0.3);
        }
        .header__burger {
            display: none;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .header__nav-row {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: var(--spacing-sm) 0;
            display: block;
        }
        .header__nav-grid {
            display: grid;
            grid-template-columns: repeat(7, auto);
            gap: var(--spacing-xs);
            align-items: center;
            justify-content: start;
        }
        .header__nav-item {
            display: flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.85rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .header__nav-item i {
            font-size: 0.8rem;
        }
        .header__nav-item:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .header__nav-item.is-active {
            color: #fff;
            background: rgba(255, 77, 46, 0.2);
            border-bottom: 2px solid var(--color-accent);
        }
        /* ===== Category Hero ===== */
        .category-hero {
            background: linear-gradient(135deg, #1E1F24 0%, #2A2B32 100%);
            padding: var(--spacing-2xl) 0;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 77, 46, 0.08);
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            right: 120px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(46, 204, 154, 0.06);
            pointer-events: none;
        }
        .category-hero__breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: var(--spacing-md);
            position: relative;
            z-index: 1;
        }
        .category-hero__breadcrumb a {
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }
        .category-hero__breadcrumb a:hover {
            color: #fff;
        }
        .category-hero__breadcrumb i {
            font-size: 0.6rem;
        }
        .category-hero__content {
            position: relative;
            z-index: 1;
        }
        .category-hero__title {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }
        .category-hero__desc {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .category-hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(46, 204, 154, 0.15);
            color: var(--color-online);
            border: 1px solid rgba(46, 204, 154, 0.3);
            border-radius: var(--radius-full);
            padding: 6px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: var(--spacing-md);
            position: relative;
            z-index: 1;
        }
        /* ===== Section base ===== */
        .section {
            padding: var(--spacing-2xl) 0;
        }
        .section--alt {
            background: #fff;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .section--dark {
            background: var(--color-primary);
            color: #fff;
        }
        .section__header {
            margin-bottom: var(--spacing-xl);
        }
        .section__label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: var(--spacing-xs);
        }
        .section__title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.3px;
        }
        .section--dark .section__title {
            color: #fff;
        }
        .section__desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            max-width: 680px;
            line-height: 1.8;
        }
        .section--dark .section__desc {
            color: rgba(255, 255, 255, 0.65);
        }
        /* ===== Horizontal list ===== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }
        .article-list__item {
            display: flex;
            gap: var(--spacing-md);
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            padding: var(--spacing-md);
            transition: all var(--transition);
            align-items: flex-start;
            flex-wrap: wrap;
        }
        .article-list__item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(255, 77, 46, 0.25);
        }
        .article-list__thumb {
            width: 140px;
            min-width: 140px;
            height: 90px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--color-bg);
            flex-shrink: 0;
        }
        .article-list__thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }
        .article-list__item:hover .article-list__thumb img {
            transform: scale(1.04);
        }
        .article-list__body {
            flex: 1;
            min-width: 0;
        }
        .article-list__meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            font-size: 0.8rem;
            color: var(--color-gray-dark);
            margin-bottom: var(--spacing-xs);
        }
        .article-list__date {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .article-list__tag {
            display: inline-block;
            background: rgba(255, 77, 46, 0.08);
            color: var(--color-accent);
            border-radius: var(--radius-full);
            padding: 2px 10px;
            font-size: 0.72rem;
            font-weight: 600;
            white-space: nowrap;
        }
        .article-list__title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: var(--spacing-xs);
            line-height: 1.5;
            transition: color var(--transition);
        }
        .article-list__title a {
            color: inherit;
        }
        .article-list__title a:hover {
            color: var(--color-accent);
        }
        .article-list__excerpt {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        /* ===== Sidebar ===== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
            position: sticky;
            top: 140px;
        }
        .sidebar__card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
        }
        .sidebar__title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: var(--spacing-md);
            padding-bottom: var(--spacing-sm);
            border-bottom: 2px solid var(--color-accent);
            display: inline-block;
        }
        .sidebar__list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar__list li {
            padding: var(--spacing-sm) 0;
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            font-size: 0.88rem;
        }
        .sidebar__list li:last-child {
            border-bottom: none;
        }
        .sidebar__list li a {
            color: var(--color-text);
            transition: color var(--transition);
            line-height: 1.5;
        }
        .sidebar__list li a:hover {
            color: var(--color-accent);
        }
        .sidebar__list .rank-num {
            width: 22px;
            height: 22px;
            border-radius: 6px;
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--color-gray-dark);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .sidebar__list .rank-num.is-top {
            background: rgba(255, 77, 46, 0.12);
            color: var(--color-accent);
        }
        .sidebar__tags {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }
        .sidebar__tag {
            display: inline-block;
            background: var(--color-bg);
            color: var(--color-text);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            padding: 4px 14px;
            font-size: 0.78rem;
            transition: all var(--transition);
        }
        .sidebar__tag:hover {
            background: rgba(255, 77, 46, 0.08);
            color: var(--color-accent);
            border-color: rgba(255, 77, 46, 0.25);
        }
        .sidebar__mini-cta {
            text-align: center;
        }
        .sidebar__mini-cta p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-md);
        }
        /* ===== Category entry grid ===== */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: var(--spacing-md);
        }
        .cat-grid__item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: var(--spacing-sm);
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            transition: all var(--transition);
            color: var(--color-text);
        }
        .cat-grid__item:hover {
            border-color: rgba(255, 77, 46, 0.3);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            color: var(--color-accent);
        }
        .cat-grid__icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--color-accent);
            transition: all var(--transition);
        }
        .cat-grid__item:hover .cat-grid__icon {
            background: rgba(255, 77, 46, 0.1);
        }
        .cat-grid__label {
            font-size: 0.85rem;
            font-weight: 600;
        }
        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .faq-item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 77, 46, 0.2);
        }
        .faq-item__question {
            padding: var(--spacing-md) var(--spacing-lg);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            cursor: pointer;
            font-weight: 700;
            color: var(--color-text);
            font-size: 0.95rem;
            user-select: none;
        }
        .faq-item__question i {
            color: var(--color-accent);
            font-size: 0.8rem;
            transition: transform var(--transition);
        }
        .faq-item.is-open .faq-item__question i {
            transform: rotate(180deg);
        }
        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 var(--spacing-lg);
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }
        .faq-item.is-open .faq-item__answer {
            max-height: 300px;
            padding-bottom: var(--spacing-md);
        }
        /* ===== Form ===== */
        .lead-form-wrap {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl);
            color: #fff;
        }
        .lead-form-wrap .section__title {
            color: #fff;
        }
        .lead-form-wrap .section__desc {
            color: rgba(255, 255, 255, 0.65);
        }
        .lead-form .form-control {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            color: #fff;
            padding: 12px 16px;
            transition: all var(--transition);
        }
        .lead-form .form-control::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .lead-form .form-control:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.15);
            background: rgba(255, 255, 255, 0.12);
        }
        .btn-primary-custom {
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-full);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: none;
        }
        .btn-primary-custom:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255, 77, 46, 0.35);
            color: #fff;
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--color-text);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            padding: 10px 22px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .btn-outline-custom:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(255, 77, 46, 0.04);
        }
        /* ===== CTA strip ===== */
        .cta-strip {
            background: linear-gradient(135deg, #FF4D2E 0%, #E63E20 100%);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl) var(--spacing-2xl);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }
        .cta-strip__text h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: #fff;
        }
        .cta-strip__text p {
            margin-bottom: 0;
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.85);
        }
        .cta-strip .btn-primary-custom {
            background: #fff;
            color: var(--color-accent);
        }
        .cta-strip .btn-primary-custom:hover {
            background: rgba(255, 255, 255, 0.9);
            color: var(--color-accent-hover);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }
        /* ===== Breadcrumb in body ===== */
        .body-breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            color: var(--color-gray-dark);
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
        }
        .body-breadcrumb a {
            color: var(--color-gray-dark);
            transition: color var(--transition);
        }
        .body-breadcrumb a:hover {
            color: var(--color-accent);
        }
        .body-breadcrumb i {
            font-size: 0.55rem;
            color: var(--color-gray);
        }
        /* ===== Footer ===== */
        .footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: var(--spacing-2xl) 0 var(--spacing-md);
            margin-top: 0;
        }
        .footer__top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-2xl);
        }
        .footer__brand h3 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }
        .footer__brand p {
            font-size: 0.85rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 0;
        }
        .footer__column h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.5px;
        }
        .footer__column ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer__column ul li {
            margin-bottom: var(--spacing-sm);
        }
        .footer__column ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.85rem;
            transition: color var(--transition);
        }
        .footer__column ul li a:hover {
            color: #fff;
        }
        .footer__bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer__bottom-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }
        .footer__bottom-links a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }
        .footer__bottom-links a:hover {
            color: #fff;
        }
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .header__nav-grid {
                grid-template-columns: repeat(4, auto);
                gap: var(--spacing-xs);
            }
            .cat-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer__top {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }
        }
        @media (max-width: 768px) {
            .header__brand-row {
                gap: var(--spacing-sm);
            }
            .header__search {
                max-width: 100%;
                order: 3;
                flex-basis: 100%;
            }
            .header__burger {
                display: flex;
            }
            .header__nav-row {
                display: none;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.35s ease;
            }
            .header__nav-row.is-open {
                display: block;
                max-height: 500px;
            }
            .header__nav-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-xs);
            }
            .category-hero__title {
                font-size: 1.5rem;
            }
            .category-hero__desc {
                font-size: 0.9rem;
            }
            .section {
                padding: var(--spacing-xl) 0;
            }
            .section__title {
                font-size: 1.3rem;
            }
            .article-list__item {
                flex-direction: column;
            }
            .article-list__thumb {
                width: 100%;
                min-width: 100%;
                height: 160px;
            }
            .sidebar {
                position: static;
                margin-top: var(--spacing-lg);
            }
            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
            .cta-strip {
                flex-direction: column;
                text-align: center;
            }
            .lead-form-wrap {
                padding: var(--spacing-lg);
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 var(--spacing-md);
            }
            .header__cta-btn {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .header__logo {
                font-size: 1.2rem;
            }
            .header__nav-grid {
                grid-template-columns: 1fr 1fr;
            }
            .category-hero__title {
                font-size: 1.3rem;
            }
            .section__title {
                font-size: 1.15rem;
            }
            .cat-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xs);
            }
            .cat-grid__item {
                padding: var(--spacing-sm) var(--spacing-xs);
            }
            .footer__top {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
                gap: var(--spacing-xs);
            }
            .article-list__excerpt {
                -webkit-line-clamp: 3;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #1E1F24;
            --color-primary-light: #2A2B32;
            --color-accent: #FF4D2E;
            --color-accent-hover: #E63E20;
            --color-online: #2ECC9A;
            --color-online-dark: #27AE80;
            --color-bg: #F7F6F2;
            --color-card: #FFFFFF;
            --color-border: #E5E7EB;
            --color-gray: #9CA3AF;
            --color-gray-light: #D1D5DB;
            --color-gray-dark: #4B5563;
            --color-text: #1E1F24;
            --color-text-secondary: #6B7280;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 50px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --font-base: 16px;
            --line-height: 1.8;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: var(--font-base);
        }
        body {
            font-family: var(--font-family);
            line-height: var(--line-height);
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-accent-hover);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            width: 100%;
            background: #fff;
            transition: border-color var(--transition), box-shadow var(--transition);
            outline: none;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.12);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }
        .container--narrow {
            max-width: 900px;
        }
        /* ===== Header & Navigation ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .header__brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            padding: var(--spacing-md) 0;
            flex-wrap: wrap;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .header__logo:hover {
            color: #fff;
        }
        .header__logo-icon {
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
            position: relative;
        }
        .header__logo-icon::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 10px;
            height: 10px;
            background: var(--color-online);
            border-radius: 50%;
            border: 2px solid var(--color-primary);
            animation: livePulse 2s infinite;
        }
        @keyframes livePulse {
            0%,
            100% {
                transform: scale(1);
                opacity: 1;
            }
            50% {
                transform: scale(1.4);
                opacity: 0.6;
            }
        }
        .header__search {
            flex: 1;
            max-width: 360px;
            min-width: 200px;
            position: relative;
        }
        .header__search input {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-full);
            color: #fff;
            padding: 10px 18px 10px 40px;
            transition: all var(--transition);
        }
        .header__search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .header__search input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.15);
        }
        .header__search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.45);
            pointer-events: none;
        }
        .header__actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
        }
        .header__cta-btn {
            background: var(--color-accent);
            color: #fff;
            padding: 9px 20px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: all var(--transition);
        }
        .header__cta-btn:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        .header__burger {
            display: none;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            font-size: 1.1rem;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .header__nav-row {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: var(--spacing-sm) 0;
        }
        .header__nav-grid {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }
        .header__nav-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .header__nav-item i {
            font-size: 0.85rem;
        }
        .header__nav-item:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .header__nav-item.is-active {
            color: #fff;
            background: rgba(255, 77, 46, 0.25);
            font-weight: 600;
        }
        .header__nav-item.is-active i {
            color: var(--color-accent);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 10px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .sep {
            color: var(--color-gray-light);
        }
        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 600;
        }

        /* ===== Category Hero ===== */
        .cat-hero {
            background: var(--color-primary);
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            position: relative;
            overflow: hidden;
        }
        .cat-hero::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 77, 46, 0.08);
            pointer-events: none;
        }
        .cat-hero__inner {
            display: flex;
            align-items: center;
            gap: var(--spacing-xl);
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .cat-hero__content {
            flex: 1;
            min-width: 280px;
        }
        .cat-hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 77, 46, 0.18);
            color: #FF8A70;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            margin-bottom: var(--spacing-md);
        }
        .cat-hero__badge i {
            font-size: 0.7rem;
        }
        .cat-hero h1 {
            font-size: 2.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.5px;
            line-height: 1.3;
        }
        .cat-hero__desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            line-height: 1.75;
        }
        .cat-hero__stats {
            display: flex;
            gap: var(--spacing-xl);
            flex-shrink: 0;
        }
        .cat-hero__stat {
            text-align: center;
        }
        .cat-hero__stat-num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-accent);
            display: block;
            line-height: 1.2;
        }
        .cat-hero__stat-label {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 4px;
        }

        /* ===== Section Common ===== */
        .section {
            padding: var(--spacing-2xl) 0;
        }
        .section--white {
            background: #fff;
        }
        .section--bg {
            background: var(--color-bg);
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-xl);
            flex-wrap: wrap;
        }
        .section-head h2 {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.3px;
            line-height: 1.35;
        }
        .section-head__sub {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            margin-top: 6px;
            max-width: 500px;
        }
        .section-head__link {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .section-head__link:hover {
            color: var(--color-accent-hover);
            gap: 10px;
        }

        /* ===== Numbered Doc List (分类页4主体形态) ===== */
        .doc-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .doc-item {
            display: flex;
            gap: var(--spacing-lg);
            padding: var(--spacing-lg) 0;
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition);
            position: relative;
        }
        .doc-item:first-child {
            border-top: 1px solid var(--color-border);
        }
        .doc-item:hover {
            background: rgba(255, 77, 46, 0.02);
            padding-left: var(--spacing-sm);
        }
        .doc-item__number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1;
            min-width: 60px;
            flex-shrink: 0;
            letter-spacing: -1px;
            opacity: 0.85;
        }
        .doc-item__body {
            flex: 1;
            min-width: 0;
        }
        .doc-item__title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .doc-item__title a {
            color: var(--color-text);
            transition: color var(--transition);
        }
        .doc-item__title a:hover {
            color: var(--color-accent);
        }
        .doc-item__summary {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 10px;
            max-width: 680px;
        }
        .doc-item__meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            font-size: 0.82rem;
            color: var(--color-gray-dark);
        }
        .doc-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: rgba(46, 204, 154, 0.1);
            color: var(--color-online-dark);
            padding: 3px 10px;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 600;
        }
        .doc-tag--accent {
            background: rgba(255, 77, 46, 0.08);
            color: var(--color-accent);
        }
        .doc-date {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .doc-date i {
            font-size: 0.7rem;
            color: var(--color-gray);
        }

        /* ===== Featured Cards (专题推荐) ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }
        .featured-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .featured-card__img {
            height: 170px;
            overflow: hidden;
            position: relative;
        }
        .featured-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .featured-card:hover .featured-card__img img {
            transform: scale(1.06);
        }
        .featured-card__badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-full);
        }
        .featured-card__body {
            padding: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .featured-card__title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .featured-card__title a {
            color: var(--color-text);
            transition: color var(--transition);
        }
        .featured-card__title a:hover {
            color: var(--color-accent);
        }
        .featured-card__desc {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        /* ===== Hot Ranking ===== */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--spacing-md) var(--spacing-lg);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }
        .rank-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .rank-item__num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
            flex-shrink: 0;
            background: var(--color-bg);
            color: var(--color-gray-dark);
        }
        .rank-item__num--top {
            background: var(--color-accent);
            color: #fff;
        }
        .rank-item__num--second {
            background: #FF8A70;
            color: #fff;
        }
        .rank-item__num--third {
            background: #FFC4B8;
            color: #fff;
        }
        .rank-item__content {
            flex: 1;
            min-width: 0;
        }
        .rank-item__title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-item__title a {
            color: var(--color-text);
        }
        .rank-item__title a:hover {
            color: var(--color-accent);
        }
        .rank-item__views {
            font-size: 0.8rem;
            color: var(--color-gray-dark);
        }

        /* ===== Tag Cloud ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }
        .tag-cloud a {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            padding: 6px 14px;
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            transition: all var(--transition);
        }
        .tag-cloud a:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(255, 77, 46, 0.04);
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl) var(--spacing-2xl);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 77, 46, 0.15);
            top: -60px;
            right: -30px;
        }
        .cta-banner__text {
            flex: 1;
            min-width: 260px;
            position: relative;
            z-index: 1;
        }
        .cta-banner__text h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .cta-banner__text p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.92rem;
        }
        .cta-banner__btn {
            background: var(--color-accent);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
            z-index: 1;
        }
        .cta-banner__btn:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item__question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            padding: var(--spacing-lg) var(--spacing-xl);
            cursor: pointer;
            font-weight: 600;
            color: var(--color-text);
            font-size: 0.98rem;
            background: transparent;
            width: 100%;
            text-align: left;
            transition: all var(--transition);
        }
        .faq-item__question:hover {
            color: var(--color-accent);
        }
        .faq-item__icon {
            font-size: 0.85rem;
            color: var(--color-gray);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.is-open .faq-item__icon {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 var(--spacing-xl);
        }
        .faq-item.is-open .faq-item__answer {
            max-height: 300px;
            padding: 0 var(--spacing-xl) var(--spacing-lg);
        }
        .faq-item__answer p {
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        /* ===== Category Entrance ===== */
        .cat-entrance {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-md);
        }
        .cat-entrance__item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            padding: var(--spacing-lg) var(--spacing-md);
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            text-align: center;
            color: var(--color-text);
        }
        .cat-entrance__item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        .cat-entrance__item i {
            font-size: 1.4rem;
            color: var(--color-accent);
        }
        .cat-entrance__item span {
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
            margin-top: 0;
        }
        .footer__top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer__brand h3 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: var(--spacing-md);
        }
        .footer__brand p {
            font-size: 0.88rem;
            line-height: 1.75;
            max-width: 300px;
        }
        .footer__column h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: var(--spacing-md);
        }
        .footer__column ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer__column ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer__column ul li a:hover {
            color: var(--color-accent);
        }
        .footer__bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            padding-top: var(--spacing-lg);
            flex-wrap: wrap;
            font-size: 0.82rem;
        }
        .footer__bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer__bottom-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.82rem;
        }
        .footer__bottom-links a:hover {
            color: var(--color-accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .cat-entrance {
                grid-template-columns: repeat(3, 1fr);
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer__top {
                grid-template-columns: 1fr 1fr;
            }
            .doc-item__number {
                font-size: 1.8rem;
                min-width: 48px;
            }
        }
        @media (max-width: 768px) {
            .header__brand-row {
                gap: var(--spacing-md);
            }
            .header__search {
                order: 3;
                flex: 1;
                max-width: 100%;
                min-width: 100%;
            }
            .header__burger {
                display: flex;
            }
            .header__nav-row {
                display: none;
                padding: var(--spacing-md) 0;
            }
            .header__nav-row.is-open {
                display: block;
            }
            .header__nav-grid {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }
            .header__nav-item {
                padding: 10px 16px;
                border-radius: var(--radius-sm);
            }
            .cat-hero h1 {
                font-size: 1.8rem;
            }
            .cat-hero__stats {
                gap: var(--spacing-lg);
                width: 100%;
                justify-content: flex-start;
            }
            .cat-hero__stat-num {
                font-size: 1.5rem;
            }
            .cat-entrance {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .footer__top {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }
            .doc-item {
                gap: var(--spacing-md);
                padding: var(--spacing-md) 0;
            }
            .doc-item__number {
                font-size: 1.5rem;
                min-width: 40px;
            }
            .cta-banner {
                padding: var(--spacing-lg);
                flex-direction: column;
                text-align: center;
            }
            .cta-banner__btn {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 var(--spacing-md);
            }
            .cat-hero {
                padding: var(--spacing-lg) 0;
            }
            .cat-hero h1 {
                font-size: 1.5rem;
            }
            .cat-hero__desc {
                font-size: 0.92rem;
            }
            .cat-hero__stats {
                gap: var(--spacing-md);
            }
            .cat-hero__stat-num {
                font-size: 1.3rem;
            }
            .cat-entrance {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
            .doc-item__title {
                font-size: 1rem;
            }
            .doc-item__summary {
                font-size: 0.88rem;
            }
            .doc-item__number {
                font-size: 1.3rem;
                min-width: 34px;
            }
            .rank-item {
                padding: var(--spacing-sm) var(--spacing-md);
            }
            .faq-item__question {
                padding: var(--spacing-md);
                font-size: 0.9rem;
            }
            .faq-item__answer {
                padding: 0 var(--spacing-md);
            }
            .faq-item.is-open .faq-item__answer {
                padding: 0 var(--spacing-md) var(--spacing-md);
            }
            .header__cta-btn {
                padding: 8px 16px;
                font-size: 0.82rem;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #1E1F24;
            --color-primary-light: #2A2B32;
            --color-accent: #FF4D2E;
            --color-accent-hover: #E63E20;
            --color-online: #2ECC9A;
            --color-online-dark: #27AE80;
            --color-bg: #F7F6F2;
            --color-card: #FFFFFF;
            --color-border: #E5E7EB;
            --color-gray: #9CA3AF;
            --color-gray-light: #D1D5DB;
            --color-gray-dark: #4B5563;
            --color-text: #1E1F24;
            --color-text-secondary: #6B7280;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 50px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --font-base: 16px;
            --line-height: 1.8;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: var(--font-base);
            box-sizing: border-box;
        }

        *,
        *::before,
        *::after {
            box-sizing: inherit;
        }

        body {
            font-family: var(--font-family);
            line-height: var(--line-height);
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--color-accent-hover);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            background: none;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            width: 100%;
            background: #fff;
            transition: border-color var(--transition), box-shadow var(--transition);
            outline: none;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.12);
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 var(--spacing-md);
            line-height: 1.4;
            font-weight: 700;
            color: var(--color-text);
        }

        h1 {
            font-size: 2.2rem;
        }
        h2 {
            font-size: 1.65rem;
        }
        h3 {
            font-size: 1.25rem;
        }
        h4 {
            font-size: 1.05rem;
        }

        p {
            margin: 0 0 var(--spacing-md);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }

        .container--narrow {
            max-width: 900px;
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .header__brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            padding: var(--spacing-md) 0;
            flex-wrap: wrap;
        }

        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .header__logo:hover {
            color: #fff;
        }

        .header__logo-icon {
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
            position: relative;
        }

        .header__logo-icon::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 10px;
            height: 10px;
            background: var(--color-online);
            border-radius: 50%;
            border: 2px solid var(--color-primary);
            animation: livePulse 2s infinite;
        }

        @keyframes livePulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(46, 204, 154, 0.6);
            }
            50% {
                box-shadow: 0 0 0 6px rgba(46, 204, 154, 0);
            }
        }

        .header__search {
            flex: 1;
            max-width: 360px;
            min-width: 200px;
            position: relative;
        }

        .header__search input {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-full);
            color: #fff;
            padding: 10px 18px 10px 40px;
            transition: all var(--transition);
        }

        .header__search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .header__search input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.15);
        }

        .header__search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.5);
            pointer-events: none;
        }

        .header__actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .header__cta-btn {
            background: var(--color-accent);
            color: #fff;
            padding: 10px 20px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 600;
            white-space: nowrap;
            border: none;
            display: inline-block;
        }

        .header__cta-btn:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }

        .header__cta-btn:focus {
            outline: 3px solid rgba(255, 77, 46, 0.4);
            outline-offset: 2px;
        }

        .header__burger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.4rem;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .header__burger:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .header__nav-row {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header__nav-grid {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: var(--spacing-sm) 0;
            flex-wrap: wrap;
        }

        .header__nav-item {
            display: flex;
            align-items: center;
            gap: 7px;
            color: rgba(255, 255, 255, 0.75);
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.88rem;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
            border-bottom: 2px solid transparent;
        }

        .header__nav-item i {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition);
        }

        .header__nav-item:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .header__nav-item:hover i {
            color: var(--color-accent);
        }

        .header__nav-item.is-active {
            color: #fff;
            background: rgba(255, 77, 46, 0.15);
            border-bottom-color: var(--color-accent);
            font-weight: 600;
        }

        .header__nav-item.is-active i {
            color: var(--color-accent);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: var(--spacing-md) 0;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            font-size: 0.85rem;
        }

        .breadcrumb__list {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .breadcrumb__item {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            color: var(--color-gray-dark);
        }

        .breadcrumb__item a {
            color: var(--color-text-secondary);
            transition: color var(--transition);
        }

        .breadcrumb__item a:hover {
            color: var(--color-accent);
        }

        .breadcrumb__item--current {
            color: var(--color-accent);
            font-weight: 600;
        }

        .breadcrumb__sep {
            color: var(--color-gray);
            font-size: 0.7rem;
        }

        /* ===== Category Hero ===== */
        .category-hero {
            background: var(--color-primary);
            padding: var(--spacing-2xl) 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 77, 46, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero__content {
            position: relative;
            z-index: 1;
            max-width: 750px;
        }

        .category-hero__h1 {
            color: #fff;
            font-size: 2.4rem;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.5px;
            position: relative;
            display: inline-block;
        }

        .category-hero__h1::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 3px;
        }

        .category-hero__desc {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            max-width: 620px;
            margin-top: var(--spacing-md);
            line-height: 1.9;
        }

        /* ===== Section Base ===== */
        .section {
            padding: var(--spacing-3xl) 0;
        }

        .section--alt {
            background: #fff;
        }

        .section__head {
            margin-bottom: var(--spacing-2xl);
        }

        .section__title {
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            position: relative;
            padding-bottom: var(--spacing-sm);
        }

        .section__title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 48px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 3px;
        }

        .section__subtitle {
            color: var(--color-text-secondary);
            font-size: 0.98rem;
            margin-top: var(--spacing-sm);
            max-width: 680px;
            line-height: 1.9;
        }

        /* ===== Pricing Filter ===== */
        .pricing-filter {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            margin-bottom: var(--spacing-xl);
        }

        .filter-btn {
            padding: 8px 20px;
            border-radius: var(--radius-full);
            border: 1px solid var(--color-border);
            background: #fff;
            color: var(--color-text-secondary);
            font-size: 0.88rem;
            font-weight: 500;
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }

        .filter-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(255, 77, 46, 0.04);
        }

        .filter-btn.is-active {
            background: var(--color-accent);
            border-color: var(--color-accent);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(255, 77, 46, 0.25);
        }

        .filter-btn:focus {
            outline: 3px solid rgba(255, 77, 46, 0.3);
            outline-offset: 2px;
        }

        /* ===== Pricing Grid ===== */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
            gap: var(--spacing-xl);
            align-items: stretch;
        }

        .pricing-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .pricing-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(255, 77, 46, 0.2);
        }

        .pricing-card__img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }

        .pricing-card__img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s var(--transition);
        }

        .pricing-card:hover .pricing-card__img-wrap img {
            transform: scale(1.04);
        }

        .pricing-card__tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            letter-spacing: 0.5px;
            z-index: 2;
        }

        .pricing-card__tag--starter {
            background: var(--color-online-dark);
        }
        .pricing-card__tag--standard {
            background: var(--color-accent);
        }
        .pricing-card__tag--pro {
            background: var(--color-primary);
        }
        .pricing-card__tag--custom {
            background: var(--color-gray-dark);
        }

        .pricing-card__body {
            padding: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .pricing-card__name {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--color-text);
        }

        .pricing-card__desc {
            color: var(--color-text-secondary);
            font-size: 0.88rem;
            line-height: 1.75;
            margin-bottom: var(--spacing-md);
        }

        .pricing-card__price {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-accent);
            margin-bottom: var(--spacing-xs);
            letter-spacing: -0.5px;
        }

        .pricing-card__price-unit {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            font-weight: 400;
        }

        .pricing-card__features {
            margin: var(--spacing-md) 0;
            flex: 1;
        }

        .pricing-card__features li {
            padding: 5px 0;
            color: var(--color-text-secondary);
            font-size: 0.88rem;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.65;
        }

        .pricing-card__features li i {
            color: var(--color-online);
            font-size: 0.75rem;
            margin-top: 5px;
            flex-shrink: 0;
        }

        .pricing-card__btn {
            display: block;
            width: 100%;
            text-align: center;
            padding: 12px 20px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.92rem;
            transition: all var(--transition);
            border: none;
        }

        .pricing-card__btn:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(255, 77, 46, 0.3);
        }

        .pricing-card__btn:focus {
            outline: 3px solid rgba(255, 77, 46, 0.35);
            outline-offset: 2px;
        }

        .pricing-card.is-hidden {
            display: none;
        }

        /* ===== Billing Section ===== */
        .billing-group {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--spacing-lg);
        }

        .billing-item {
            background: #fff;
            padding: var(--spacing-lg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-align: center;
        }

        .billing-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .billing-item__icon {
            width: 52px;
            height: 52px;
            background: rgba(255, 77, 46, 0.08);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-md);
            font-size: 1.3rem;
            color: var(--color-accent);
        }

        .billing-item__title {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: var(--spacing-xs);
        }

        .billing-item__desc {
            color: var(--color-text-secondary);
            font-size: 0.88rem;
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ===== Tag Cloud ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .tag-cloud__item {
            padding: 8px 18px;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            transition: all var(--transition);
            display: inline-block;
        }

        .tag-cloud__item:hover {
            border-color: var(--color-online);
            color: var(--color-online-dark);
            background: rgba(46, 204, 154, 0.05);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            margin-bottom: var(--spacing-md);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-item__question {
            padding: var(--spacing-md) var(--spacing-lg);
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            gap: var(--spacing-md);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-item__icon {
            color: var(--color-accent);
            font-size: 0.9rem;
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .faq-item.is-open .faq-item__icon {
            transform: rotate(180deg);
        }

        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s var(--transition), padding 0.4s var(--transition);
            padding: 0 var(--spacing-lg);
            color: var(--color-text-secondary);
            font-size: 0.92rem;
            line-height: 1.85;
        }

        .faq-item.is-open .faq-item__answer {
            max-height: 500px;
            padding: 0 var(--spacing-lg) var(--spacing-lg);
        }

        /* ===== Quick Form ===== */
        .quick-form-wrap {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .quick-form-wrap::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(46, 204, 154, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .quick-form-wrap .section__title {
            color: #fff;
        }

        .quick-form-wrap .section__title::after {
            background: var(--color-online);
        }

        .quick-form-wrap .section__subtitle {
            color: rgba(255, 255, 255, 0.65);
        }

        .quick-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
            position: relative;
            z-index: 1;
        }

        .quick-form__field--full {
            grid-column: 1 / -1;
        }

        .quick-form input,
        .quick-form textarea,
        .quick-form select {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 12px 16px;
        }

        .quick-form input::placeholder,
        .quick-form textarea::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .quick-form input:focus,
        .quick-form textarea:focus,
        .quick-form select:focus {
            border-color: var(--color-online);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(46, 204, 154, 0.15);
        }

        .quick-form select option {
            background: var(--color-primary);
            color: #fff;
        }

        .quick-form__submit {
            grid-column: 1 / -1;
            background: var(--color-accent);
            color: #fff;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.5px;
            transition: all var(--transition);
            border: none;
        }

        .quick-form__submit:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 77, 46, 0.35);
        }

        .quick-form__submit:focus {
            outline: 3px solid rgba(255, 77, 46, 0.4);
            outline-offset: 2px;
        }

        /* ===== Category Entry ===== */
        .category-entry-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: var(--spacing-md);
        }

        .category-entry-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: var(--spacing-sm);
            padding: var(--spacing-lg);
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            text-align: center;
            transition: all var(--transition);
            color: var(--color-text-secondary);
        }

        .category-entry-item i {
            font-size: 1.5rem;
            color: var(--color-accent);
            transition: color var(--transition);
        }

        .category-entry-item span {
            font-size: 0.88rem;
            font-weight: 600;
        }

        .category-entry-item:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: var(--spacing-3xl) 0 0;
            margin-top: var(--spacing-3xl);
        }

        .footer__top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-2xl);
            padding-bottom: var(--spacing-2xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer__brand h3 {
            color: #fff;
            font-size: 1.4rem;
            margin-bottom: var(--spacing-md);
        }

        .footer__brand p {
            font-size: 0.9rem;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

        .footer__column h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: var(--spacing-md);
            font-weight: 600;
        }

        .footer__column ul li {
            margin-bottom: var(--spacing-sm);
        }

        .footer__column ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: color var(--transition);
        }

        .footer__column ul li a:hover {
            color: var(--color-accent);
        }

        .footer__bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-lg) 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .footer__bottom-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .footer__bottom-links a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }

        .footer__bottom-links a:hover {
            color: var(--color-accent);
        }

        /* ===== Buttons Base ===== */
        .btn {
            display: inline-block;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.92rem;
            text-align: center;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn--accent {
            background: var(--color-accent);
            color: #fff;
        }

        .btn--accent:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 77, 46, 0.3);
        }

        .btn--ghost {
            background: transparent;
            color: var(--color-text);
            border: 1px solid var(--color-border);
        }

        .btn--ghost:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(255, 77, 46, 0.04);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer__top {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xl);
            }
            .pricing-grid {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
                gap: var(--spacing-lg);
            }
        }

        @media (max-width: 768px) {
            .header__brand-row {
                gap: var(--spacing-sm);
            }
            .header__search {
                max-width: 100%;
                order: 3;
                flex-basis: 100%;
            }
            .header__nav-grid {
                flex-wrap: nowrap;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                gap: var(--spacing-xs);
                padding-bottom: var(--spacing-sm);
                scrollbar-width: none;
                -ms-overflow-style: none;
            }
            .header__nav-grid::-webkit-scrollbar {
                display: none;
            }
            .header__nav-item {
                flex-shrink: 0;
                font-size: 0.8rem;
                padding: 7px 12px;
            }
            .header__burger {
                display: block;
            }
            .category-hero__h1 {
                font-size: 1.8rem;
            }
            .category-hero__desc {
                font-size: 0.92rem;
            }
            .section {
                padding: var(--spacing-2xl) 0;
            }
            .section__title {
                font-size: 1.4rem;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .pricing-card__price {
                font-size: 1.8rem;
            }
            .quick-form {
                grid-template-columns: 1fr;
            }
            .quick-form__field--full {
                grid-column: 1;
            }
            .quick-form__submit {
                grid-column: 1;
            }
            .quick-form-wrap {
                padding: var(--spacing-xl);
            }
            .billing-group {
                grid-template-columns: 1fr;
            }
            .footer__top {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
                gap: var(--spacing-sm);
            }
        }

        @media (max-width: 520px) {
            :root {
                --font-base: 15px;
            }
            .container {
                padding: 0 var(--spacing-md);
            }
            .header__logo {
                font-size: 1.2rem;
            }
            .header__logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.8rem;
                border-radius: 8px;
            }
            .header__cta-btn {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .category-hero {
                padding: var(--spacing-xl) 0;
            }
            .category-hero__h1 {
                font-size: 1.5rem;
            }
            .pricing-filter {
                gap: var(--spacing-xs);
            }
            .filter-btn {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .pricing-card__body {
                padding: var(--spacing-md);
            }
            .pricing-card__name {
                font-size: 1.05rem;
            }
            .billing-item {
                padding: var(--spacing-md);
            }
            .quick-form-wrap {
                padding: var(--spacing-lg);
            }
            .section {
                padding: var(--spacing-xl) 0;
            }
            .section__title {
                font-size: 1.25rem;
            }
            .faq-item__question {
                font-size: 0.9rem;
                padding: var(--spacing-sm) var(--spacing-md);
            }
            .faq-item__answer {
                font-size: 0.85rem;
                padding: 0 var(--spacing-md);
            }
            .faq-item.is-open .faq-item__answer {
                padding: 0 var(--spacing-md) var(--spacing-md);
            }
            .category-entry-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: var(--spacing-sm);
            }
            .category-entry-item {
                padding: var(--spacing-md);
            }
            .category-entry-item i {
                font-size: 1.2rem;
            }
            .category-entry-item span {
                font-size: 0.75rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #1E1F24;
            --color-primary-light: #2A2B32;
            --color-accent: #FF4D2E;
            --color-accent-hover: #E63E20;
            --color-online: #2ECC9A;
            --color-online-dark: #27AE80;
            --color-bg: #F7F6F2;
            --color-card: #FFFFFF;
            --color-border: #E5E7EB;
            --color-gray: #9CA3AF;
            --color-gray-light: #D1D5DB;
            --color-gray-dark: #4B5563;
            --color-text: #1E1F24;
            --color-text-secondary: #6B7280;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 50px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --font-base: 16px;
            --line-height: 1.8;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: var(--font-base);
        }

        body {
            font-family: var(--font-family);
            line-height: var(--line-height);
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--color-accent-hover);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            width: 100%;
            background: #fff;
            transition: border-color var(--transition), box-shadow var(--transition);
            outline: none;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255,77,46,0.12);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }

        .container--narrow {
            max-width: 900px;
        }

        h1, h2, h3, h4 {
            margin: 0;
            line-height: 1.4;
            font-weight: 700;
        }

        h1 {
            font-size: 2.2rem;
            color: var(--color-primary);
            letter-spacing: 0.5px;
        }

        h2 {
            font-size: 1.7rem;
            color: var(--color-primary);
            letter-spacing: 0.3px;
        }

        h3 {
            font-size: 1.2rem;
            color: var(--color-primary);
        }

        h4 {
            font-size: 1rem;
            color: var(--color-primary);
        }

        p {
            margin: 0;
            color: var(--color-text-secondary);
            line-height: var(--line-height);
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .header__brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            padding: var(--spacing-md) 0;
            flex-wrap: wrap;
        }

        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .header__logo:hover {
            color: #fff;
        }

        .header__logo-icon {
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
            position: relative;
        }

        .header__logo-icon::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 10px;
            height: 10px;
            background: var(--color-online);
            border-radius: 50%;
            border: 2px solid var(--color-primary);
            animation: livePulse 2s infinite;
        }

        @keyframes livePulse {
            0%, 100% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.4); opacity: 0.6; }
        }

        .header__search {
            flex: 1;
            max-width: 360px;
            min-width: 200px;
            position: relative;
        }

        .header__search input {
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: var(--radius-full);
            color: #fff;
            padding: 10px 18px 10px 40px;
            transition: all var(--transition);
        }

        .header__search input::placeholder {
            color: rgba(255,255,255,0.45);
        }

        .header__search input:focus {
            border-color: var(--color-accent);
            background: rgba(255,255,255,0.12);
            box-shadow: 0 0 0 3px rgba(255,77,46,0.15);
        }

        .header__search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255,255,255,0.5);
            pointer-events: none;
        }

        .header__actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .header__cta-btn {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 10px 20px;
            border-radius: var(--radius-full);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }

        .header__cta-btn:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255,77,46,0.25);
        }

        .header__cta-btn:focus {
            outline: 3px solid rgba(255,255,255,0.4);
            outline-offset: 2px;
        }

        .header__burger {
            background: rgba(255,255,255,0.1);
            color: #fff;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            border: 1px solid rgba(255,255,255,0.15);
            transition: all var(--transition);
        }

        .header__burger:hover {
            background: rgba(255,255,255,0.2);
            color: #fff;
        }

        .header__nav-row {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: var(--spacing-sm) 0;
        }

        .header__nav-grid {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .header__nav-grid::-webkit-scrollbar {
            display: none;
        }

        .header__nav-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: rgba(255,255,255,0.75);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }

        .header__nav-item i {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            transition: color var(--transition);
        }

        .header__nav-item:hover {
            color: #fff;
            background: rgba(255,255,255,0.08);
        }

        .header__nav-item:hover i {
            color: var(--color-accent);
        }

        .header__nav-item.is-active {
            color: #fff;
            background: rgba(255,77,46,0.18);
        }

        .header__nav-item.is-active i {
            color: var(--color-accent);
        }

        .header__nav-item.is-active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        /* ===== Main ===== */
        main {
            min-height: 60vh;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 12px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb i {
            color: var(--color-gray-light);
            font-size: 0.75rem;
        }

        .breadcrumb__current {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* ===== Compact Hero ===== */
        .compact-hero {
            background: var(--color-primary);
            padding: 48px 0 56px;
            position: relative;
            overflow: hidden;
        }

        .compact-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 400px;
            height: 100%;
            background: radial-gradient(circle at top right, rgba(255,77,46,0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .compact-hero__inner {
            position: relative;
            z-index: 1;
        }

        .compact-hero__title {
            font-size: 2.6rem;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .compact-hero__title .accent {
            color: var(--color-accent);
        }

        .compact-hero__subtitle {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.7);
            max-width: 640px;
            line-height: 1.7;
        }

        .compact-hero__meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .compact-hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(46,204,154,0.15);
            color: var(--color-online);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            border: 1px solid rgba(46,204,154,0.3);
        }

        .compact-hero__badge i {
            font-size: 0.7rem;
        }

        .compact-hero__date {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }

        /* ===== Section Common ===== */
        .section {
            padding: var(--spacing-3xl) 0;
        }

        .section--light {
            background: var(--color-bg);
        }

        .section--white {
            background: #fff;
        }

        .section--dark {
            background: var(--color-primary);
        }

        .section__header {
            margin-bottom: var(--spacing-xl);
        }

        .section__title {
            font-size: 1.7rem;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.3px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section__title .icon {
            color: var(--color-accent);
            font-size: 1.2rem;
        }

        .section--dark .section__title {
            color: #fff;
        }

        .section__desc {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.7;
        }

        .section--dark .section__desc {
            color: rgba(255,255,255,0.65);
        }

        /* ===== Timeline ===== */
        .timeline {
            position: relative;
            padding-left: 42px;
            max-width: 900px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: var(--color-border);
        }

        .timeline__item {
            position: relative;
            margin-bottom: var(--spacing-xl);
        }

        .timeline__item:last-child {
            margin-bottom: 0;
        }

        .timeline__dot {
            position: absolute;
            left: -35px;
            top: 24px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--color-accent);
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px rgba(255,77,46,0.2);
            z-index: 2;
        }

        .timeline__item--published .timeline__dot {
            background: var(--color-online);
            box-shadow: 0 0 0 3px rgba(46,204,154,0.2);
        }

        .timeline__card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .timeline__card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(255,77,46,0.25);
            transform: translateY(-2px);
        }

        .timeline__date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-accent);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .timeline__date i {
            font-size: 0.7rem;
        }

        .timeline__title {
            font-size: 1.15rem;
            color: var(--color-primary);
            margin-bottom: 10px;
            font-weight: 700;
            line-height: 1.5;
        }

        .timeline__excerpt {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
            max-width: 700px;
        }

        .timeline__footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            border-top: 1px solid var(--color-border);
            padding-top: 14px;
        }

        .timeline__tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 0.75rem;
            color: var(--color-text-secondary);
            background: var(--color-bg);
            padding: 4px 12px;
            border-radius: var(--radius-full);
            border: 1px solid var(--color-border);
        }

        .timeline__read-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            padding: 6px 0;
            transition: all var(--transition);
        }

        .timeline__read-btn:hover {
            color: var(--color-accent-hover);
            gap: 10px;
        }

        .timeline__thumb {
            position: relative;
            width: 100%;
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 14px;
        }

        .timeline__thumb img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .timeline__card:hover .timeline__thumb img {
            transform: scale(1.04);
        }

        .timeline__thumb-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(30,31,36,0.8);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            backdrop-filter: blur(4px);
        }

        .timeline__thumb-badge i {
            color: var(--color-online);
            font-size: 0.6rem;
        }

        /* ===== Editor Picks ===== */
        .picks-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .pick-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .pick-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(255,77,46,0.2);
        }

        .pick-card__img {
            position: relative;
            height: 190px;
            overflow: hidden;
        }

        .pick-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .pick-card:hover .pick-card__img img {
            transform: scale(1.05);
        }

        .pick-card__badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            letter-spacing: 0.5px;
        }

        .pick-card__body {
            padding: var(--spacing-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .pick-card__title {
            font-size: 1.05rem;
            color: var(--color-primary);
            margin-bottom: 10px;
            font-weight: 700;
            line-height: 1.5;
            flex: 1;
        }

        .pick-card__meta {
            font-size: 0.8rem;
            color: var(--color-gray);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }

        .pick-card__meta i {
            color: var(--color-accent);
            font-size: 0.7rem;
        }

        .pick-card__action {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            transition: all var(--transition);
        }

        .pick-card__action:hover {
            color: var(--color-accent-hover);
            gap: 10px;
        }

        /* ===== Hot Ranking ===== */
        .ranking-list {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xs) 0;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            padding: 14px var(--spacing-lg);
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition);
            cursor: default;
        }

        .ranking-item:last-child {
            border-bottom: none;
        }

        .ranking-item:hover {
            background: #fafaf8;
        }

        .ranking-item__rank {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            font-weight: 700;
            border-radius: 8px;
            color: var(--color-gray);
            background: var(--color-bg);
            transition: all var(--transition);
        }

        .ranking-item:hover .ranking-item__rank {
            background: var(--color-accent);
            color: #fff;
        }

        .ranking-item--top .ranking-item__rank {
            background: rgba(255,77,46,0.1);
            color: var(--color-accent);
        }

        .ranking-item--top1 .ranking-item__rank {
            background: var(--color-accent);
            color: #fff;
        }

        .ranking-item__content {
            flex: 1;
            min-width: 0;
        }

        .ranking-item__title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 4px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .ranking-item__meta {
            font-size: 0.75rem;
            color: var(--color-gray);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .ranking-item__views {
            display: flex;
            align-items: center;
            gap: 4px;
            color: var(--color-online);
            font-weight: 600;
        }

        .ranking-item__views i {
            font-size: 0.7rem;
        }

        /* ===== Industry Brief ===== */
        .brief-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }

        .brief-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md) var(--spacing-lg);
            transition: all var(--transition);
        }

        .brief-item:hover {
            border-color: rgba(255,77,46,0.25);
            box-shadow: var(--shadow-sm);
        }

        .brief-item__icon {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(46,204,154,0.1);
            color: var(--color-online);
            border-radius: 8px;
            font-size: 0.85rem;
        }

        .brief-item__content {
            flex: 1;
        }

        .brief-item__title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 4px;
        }

        .brief-item__desc {
            font-size: 0.8rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ===== Tag Cloud ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .tag-cloud__item {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            padding: 7px 16px;
            transition: all var(--transition);
        }

        .tag-cloud__item i {
            color: var(--color-gray);
            font-size: 0.7rem;
            transition: color var(--transition);
        }

        .tag-cloud__item:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }

        .tag-cloud__item:hover i {
            color: var(--color-accent);
        }

        .tag-cloud__item--hot {
            background: rgba(255,77,46,0.08);
            border-color: rgba(255,77,46,0.25);
            color: var(--color-accent);
        }

        .tag-cloud__item--hot i {
            color: var(--color-accent);
        }

        .tag-cloud__item--hot:hover {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
        }

        .tag-cloud__item--hot:hover i {
            color: #fff;
        }

        /* ===== Subscribe Form ===== */
        .subscribe-section {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl) var(--spacing-xl);
            position: relative;
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .subscribe-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255,77,46,0.1);
            pointer-events: none;
        }

        .subscribe-section__content {
            position: relative;
            z-index: 1;
        }

        .subscribe-section__title {
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .subscribe-section__desc {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.65);
            line-height: 1.7;
        }

        .subscribe-form {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .subscribe-form__row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
        }

        .subscribe-form input {
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: var(--radius-sm);
            color: #fff;
            padding: 12px 16px;
            font-size: 0.9rem;
        }

        .subscribe-form input::placeholder {
            color: rgba(255,255,255,0.45);
        }

        .subscribe-form input:focus {
            border-color: var(--color-accent);
            background: rgba(255,255,255,0.15);
            box-shadow: 0 0 0 3px rgba(255,77,46,0.2);
        }

        .subscribe-btn {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 24px;
            border-radius: var(--radius-full);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            width: 100%;
            transition: all var(--transition);
        }

        .subscribe-btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(255,77,46,0.3);
        }

        .subscribe-btn:focus {
            outline: 3px solid rgba(255,255,255,0.4);
            outline-offset: 2px;
        }

        .subscribe-form__note {
            font-size: 0.75rem;
            color: rgba(255,255,255,0.45);
            text-align: center;
        }

        /* ===== Category Entrance ===== */
        .cat-entrance__grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: var(--spacing-md);
        }

        .cat-entrance__item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
            padding: var(--spacing-lg) var(--spacing-md);
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            transition: all var(--transition);
            text-align: center;
        }

        .cat-entrance__item:hover {
            border-color: rgba(255,77,46,0.3);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .cat-entrance__item-icon {
            width: 46px;
            height: 46px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-bg);
            color: var(--color-accent);
            border-radius: 12px;
            font-size: 1.1rem;
            transition: all var(--transition);
        }

        .cat-entrance__item:hover .cat-entrance__item-icon {
            background: var(--color-accent);
            color: #fff;
        }

        .cat-entrance__item-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary);
        }

        .cat-entrance__item--current {
            background: rgba(46,204,154,0.05);
            border-color: rgba(46,204,154,0.3);
            cursor: default;
        }

        .cat-entrance__item--current .cat-entrance__item-icon {
            background: var(--color-online);
            color: #fff;
        }

        .cat-entrance__item--current .cat-entrance__item-label {
            color: var(--color-online);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--color-primary);
            color: rgba(255,255,255,0.7);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
        }

        .footer__top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }

        .footer__brand h3 {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .footer__brand p {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .footer__column h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer__column ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer__column ul li {
            margin-bottom: 8px;
        }

        .footer__column ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.88rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer__column ul li a:hover {
            color: var(--color-accent);
            transform: translateX(3px);
        }

        .footer__bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: var(--spacing-lg);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            font-size: 0.8rem;
            color: rgba(255,255,255,0.5);
        }

        .footer__bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer__bottom-links a {
            color: rgba(255,255,255,0.55);
            transition: all var(--transition);
        }

        .footer__bottom-links a:hover {
            color: var(--color-accent);
        }

        .footer__bottom-links span {
            color: rgba(255,255,255,0.25);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer__top {
                grid-template-columns: 1fr 1fr;
            }

            .cat-entrance__grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .picks-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 1.8rem;
            }

            h2 {
                font-size: 1.4rem;
            }

            .compact-hero {
                padding: 36px 0 44px;
            }

            .compact-hero__title {
                font-size: 2rem;
            }

            .timeline {
                padding-left: 28px;
            }

            .timeline::before {
                left: 10px;
            }

            .timeline__dot {
                left: -29px;
                width: 10px;
                height: 10px;
                top: 20px;
            }

            .timeline__card {
                padding: var(--spacing-md) var(--spacing-lg);
            }

            .timeline__thumb img {
                height: 140px;
            }

            .picks-grid {
                grid-template-columns: 1fr;
            }

            .brief-list {
                grid-template-columns: 1fr;
            }

            .subscribe-section {
                grid-template-columns: 1fr;
                padding: var(--spacing-xl);
            }

            .cat-entrance__grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer__top {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .header__brand-row {
                gap: var(--spacing-md);
            }

            .header__search {
                order: 3;
                flex: 1 1 100%;
                max-width: 100%;
            }

            .header__nav-grid {
                gap: 2px;
            }

            .header__nav-item {
                padding: 7px 10px;
                font-size: 0.8rem;
            }

            .header__nav-item i {
                font-size: 0.72rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 var(--spacing-md);
            }

            .section {
                padding: var(--spacing-2xl) 0;
            }

            .compact-hero__title {
                font-size: 1.6rem;
            }

            .compact-hero__subtitle {
                font-size: 0.9rem;
            }

            .timeline {
                padding-left: 22px;
            }

            .timeline::before {
                left: 6px;
            }

            .timeline__dot {
                left: -24px;
                width: 8px;
                height: 8px;
                top: 17px;
            }

            .timeline__card {
                padding: var(--spacing-md);
            }

            .timeline__thumb img {
                height: 120px;
            }

            .timeline__excerpt {
                font-size: 0.88rem;
            }

            .timeline__footer {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .subscribe-form__row {
                grid-template-columns: 1fr;
            }

            .cat-entrance__grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }

            .cat-entrance__item {
                padding: var(--spacing-md) var(--spacing-sm);
            }

            .ranking-item {
                padding: 12px var(--spacing-md);
                gap: var(--spacing-sm);
            }

            .header__cta-btn {
                padding: 8px 14px;
                font-size: 0.8rem;
            }

            .header__logo {
                font-size: 1.2rem;
            }

            .header__logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.75rem;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}