/* roulang page: index */
:root {
            --primary: #E8590C;
            --primary-dark: #D9480F;
            --accent: #F59F00;
            --dark: #16181C;
            --dark-2: #1E2024;
            --dark-3: #111315;
            --light: #F7F6F4;
            --surface: #FFFFFF;
            --text: #212529;
            --text-secondary: #6C737A;
            --text-light: #A0A8B0;
            --border: #E8E6E2;
            --success: #2B8A3E;
            --danger: #C92A2A;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
            --shadow-md: 0 10px 24px rgba(0, 0, 0, .12);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, .18);
            --space-section: clamp(4rem, 7vw, 6.5rem);
            --font-main: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'PingFangSC-Regular', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--light);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color .2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Button */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            font-size: .95rem;
            line-height: 1.4;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all .25s ease;
            letter-spacing: .02em;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(232, 89, 12, .35);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, .7);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .12);
            color: #fff;
            border-color: #fff;
        }
        .btn-outline-primary {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline-primary:hover {
            background: rgba(232, 89, 12, .08);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: .85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-white:hover {
            background: #f0edea;
            color: var(--primary-dark);
            border-color: #f0edea;
            transform: translateY(-2px);
        }
        .btn:active {
            transform: translateY(0) scale(.98);
        }

        /* Badge */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: .78rem;
            font-weight: 600;
            line-height: 1.4;
            background: var(--accent);
            color: #1a1a1a;
            letter-spacing: .02em;
        }
        .badge-primary {
            background: var(--primary);
            color: #fff;
        }
        .badge-dark {
            background: var(--dark-2);
            color: #fff;
        }
        .badge-hot {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 10px rgba(232, 89, 12, .4);
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, .30);
        }
        .header-brand-row {
            background: var(--dark);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .header-brand-row .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 10px;
            padding-bottom: 10px;
        }
        .brand-left {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: .01em;
            transition: opacity .2s;
        }
        .brand-logo:hover {
            opacity: .88;
            color: #fff;
        }
        .brand-logo .fox-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            flex-shrink: 0;
        }
        .brand-slogan {
            font-size: .82rem;
            color: rgba(255, 255, 255, .55);
            border-left: 1px solid rgba(255, 255, 255, .15);
            padding-left: 14px;
            white-space: nowrap;
            display: none;
        }
        .brand-right {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-toggle {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .1);
            color: #fff;
            font-size: .9rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background .2s;
        }
        .search-toggle:hover {
            background: rgba(255, 255, 255, .16);
        }
        .search-wrap {
            position: absolute;
            top: 58px;
            right: 24px;
            width: 320px;
            background: var(--dark-2);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-md);
            padding: 12px;
            box-shadow: var(--shadow-lg);
            display: none;
            z-index: 100;
        }
        .search-wrap.show {
            display: block;
        }
        .search-wrap input {
            width: 100%;
            padding: 10px 14px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, .15);
            background: rgba(255, 255, 255, .06);
            color: #fff;
            font-size: .9rem;
            outline: none;
        }
        .search-wrap input::placeholder {
            color: rgba(255, 255, 255, .4);
        }
        .search-wrap input:focus {
            border-color: var(--primary);
        }

        .header-nav-row {
            background: var(--dark-2);
            border-top: 1px solid rgba(255, 255, 255, .03);
        }
        .channel-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, .2) transparent;
        }
        .channel-nav::-webkit-scrollbar {
            height: 3px;
        }
        .channel-nav::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, .25);
            border-radius: 3px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 18px;
            border-radius: 999px;
            font-size: .88rem;
            font-weight: 500;
            color: rgba(255, 255, 255, .72);
            white-space: nowrap;
            transition: all .2s ease;
            border: 1px solid transparent;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .08);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        /* Hero */
        .hero {
            position: relative;
            background: var(--dark);
            padding: clamp(4rem, 8vw, 7rem) 0;
            overflow: hidden;
            color: #fff;
        }
        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: .25;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(22, 24, 28, .92) 35%, rgba(22, 24, 28, .60) 100%);
            z-index: 1;
        }
        .hero-glow {
            position: absolute;
            top: -20%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(232, 89, 12, .28) 0%, rgba(245, 159, 0, .12) 40%, transparent 70%);
            z-index: 1;
            pointer-events: none;
            border-radius: 50%;
        }
        .hero-fox-line {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 200' fill='none' opacity='0.08' preserveAspectRatio='none'%3E%3Cpath d='M0,180 C80,160 120,90 200,100 C260,108 300,150 400,120' stroke='%23E8590C' stroke-width='2'/%3E%3Cpath d='M0,200 C100,180 160,130 240,140 C300,148 340,180 400,160' stroke='%23F59F00' stroke-width='1.5'/%3E%3C/svg%3E");
            background-size: cover;
            background-position: bottom;
            z-index: 1;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            padding-right: 20px;
        }
        .hero-badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: .8rem;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-badge-tag i {
            color: var(--accent);
        }
        .hero h1 {
            font-size: clamp(2.4rem, 5vw, 4rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -.01em;
            color: #fff;
        }
        .hero h1 .highlight {
            color: var(--primary);
        }
        .hero-subtitle {
            font-size: clamp(1rem, 1.5vw, 1.15rem);
            color: rgba(255, 255, 255, .75);
            line-height: 1.75;
            margin-bottom: 28px;
            max-width: 540px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 36px;
        }
        .hero-data {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, .1);
        }
        .hero-data-item strong {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }
        .hero-data-item span {
            font-size: .8rem;
            color: rgba(255, 255, 255, .5);
        }

        .hero-visual {
            position: relative;
            padding: 10px 0;
        }
        .hero-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, .5);
            aspect-ratio: 16 / 10;
        }
        .hero-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .hero-card:hover img {
            transform: scale(1.03);
        }
        .hero-card-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to top, rgba(0, 0, 0, .4), transparent 50%);
        }
        .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 72px;
            height: 72px;
            background: rgba(232, 89, 12, .9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.4rem;
            box-shadow: 0 8px 30px rgba(232, 89, 12, .4);
            transition: all .3s ease;
            cursor: pointer;
            border: 2px solid rgba(255, 255, 255, .3);
        }
        .play-btn:hover {
            background: var(--primary);
            transform: translate(-50%, -50%) scale(1.08);
            box-shadow: 0 12px 40px rgba(232, 89, 12, .55);
        }
        .hero-card .badge-hot {
            position: absolute;
            top: 16px;
            right: 16px;
            z-index: 2;
        }
        .hero-badge-float {
            position: absolute;
            bottom: -20px;
            left: 24px;
            background: var(--dark-2);
            border: 1px solid rgba(255, 255, 255, .1);
            color: #fff;
            padding: 10px 18px;
            border-radius: var(--radius-md);
            font-size: .85rem;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: var(--shadow-md);
        }
        .hero-badge-float i {
            color: var(--accent);
        }

        /* Section common */
        .section {
            padding: var(--space-section) 0;
        }
        .section-label {
            display: inline-block;
            font-size: .78rem;
            font-weight: 600;
            letter-spacing: .1em;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .section-title {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text);
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.7;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        /* Metrics */
        .metrics-section {
            background: var(--light);
            border-bottom: 1px solid var(--border);
            padding: 48px 0;
        }
        .metric-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: left;
            position: relative;
            border-top: 4px solid var(--primary);
            box-shadow: var(--shadow-sm);
            transition: all .25s ease;
            margin-bottom: 10px;
            height: 100%;
        }
        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .metric-card .metric-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
            font-family: 'Barlow', 'D-DIN', var(--font-main);
        }
        .metric-card .metric-name {
            font-size: .9rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: .78rem;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 999px;
            background: rgba(43, 138, 62, .08);
            color: var(--success);
        }
        .metric-trend .trend-up {
            color: var(--success);
        }
        .metric-trend .trend-neutral {
            color: var(--text-primary);
        }

        /* Hot Topics / News */
        .topics-section {
            background: var(--light);
            padding: var(--space-section) 0;
        }
        .topics-layout {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }
        .topics-list {
            flex: 1 1 60%;
            min-width: 280px;
        }
        .topic-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            transition: all .2s ease;
            gap: 16px;
        }
        .topic-item:hover {
            padding-left: 8px;
        }
        .topic-item a {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 12px;
            flex: 1;
        }
        .topic-item a:hover {
            color: var(--primary);
        }
        .topic-item .topic-num {
            font-size: .8rem;
            font-weight: 700;
            color: var(--primary);
            background: rgba(232, 89, 12, .08);
            padding: 2px 10px;
            border-radius: 999px;
            flex-shrink: 0;
        }
        .topic-item .topic-date {
            font-size: .8rem;
            color: var(--text-secondary);
            flex-shrink: 0;
            white-space: nowrap;
        }
        .topics-side {
            flex: 0 0 32%;
            min-width: 240px;
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .topics-side h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .topics-side h3 i {
            color: var(--primary);
        }
        .side-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            transition: all .2s;
        }
        .side-link:last-child {
            border-bottom: none;
        }
        .side-link .side-thumb {
            width: 56px;
            height: 56px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .side-link .side-text {
            flex: 1;
        }
        .side-link .side-text strong {
            font-size: .88rem;
            font-weight: 600;
            color: var(--text);
            display: block;
            line-height: 1.4;
        }
        .side-link .side-text span {
            font-size: .75rem;
            color: var(--text-secondary);
        }
        .side-link:hover .side-text strong {
            color: var(--primary);
        }

        /* Service Matrix */
        .matrix-section {
            background: var(--surface);
            padding: var(--space-section) 0;
        }
        .matrix-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin: 0 -10px;
        }
        .matrix-grid .cell {
            padding: 0 10px;
            margin-bottom: 20px;
        }
        .matrix-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .matrix-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .matrix-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }
        .matrix-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }
        .matrix-card:hover .card-img img {
            transform: scale(1.04);
        }
        .matrix-card .card-img .badge {
            position: absolute;
            top: 12px;
            right: 12px;
            z-index: 2;
        }
        .matrix-card .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .matrix-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
            transition: color .2s;
        }
        .matrix-card:hover .card-body h3 {
            color: var(--primary);
        }
        .matrix-card .card-body p {
            font-size: .9rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 16px;
            flex: 1;
        }
        .matrix-card .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: .78rem;
            color: var(--text-secondary);
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }
        .matrix-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .matrix-card .card-meta i {
            color: var(--primary);
        }
        .matrix-card-wide {
            background: var(--dark);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: none;
            position: relative;
            min-height: 220px;
            height: 100%;
        }
        .matrix-card-wide .card-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: .3;
        }
        .matrix-card-wide .card-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(120deg, rgba(22, 24, 28, .9), rgba(22, 24, 28, .55));
        }
        .matrix-card-wide .card-content {
            position: relative;
            z-index: 2;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            height: 100%;
        }
        .matrix-card-wide .card-content h3 {
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .matrix-card-wide .card-content p {
            color: rgba(255, 255, 255, .7);
            font-size: .9rem;
            margin-bottom: 16px;
            max-width: 500px;
        }

        /* Testimonials */
        .testimonial-section {
            background: var(--light);
            padding: var(--space-section) 0;
        }
        .testimonial-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all .25s;
            margin-bottom: 10px;
            height: 100%;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .testimonial-card .testimonial-stars {
            color: var(--accent);
            font-size: .85rem;
            margin-bottom: 12px;
        }
        .testimonial-card p {
            font-size: .9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .testimonial-card .testimonial-author .avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: .8rem;
            flex-shrink: 0;
        }
        .testimonial-card .testimonial-author .author-info strong {
            font-size: .9rem;
            font-weight: 600;
            color: var(--text);
            display: block;
        }
        .testimonial-card .testimonial-author .author-info span {
            font-size: .78rem;
            color: var(--text-secondary);
        }

        /* Compare */
        .compare-section {
            background: var(--dark);
            padding: var(--space-section) 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .compare-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(232, 89, 12, .15), transparent 70%);
            border-radius: 50%;
        }
        .compare-section .section-title {
            color: #fff;
        }
        .compare-section .section-desc {
            color: rgba(255, 255, 255, .6);
        }
        .compare-grid {
            display: flex;
            gap: 30px;
            position: relative;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .compare-card {
            flex: 1 1 40%;
            min-width: 270px;
            border-radius: var(--radius-md);
            padding: 32px;
            position: relative;
            transition: all .3s ease;
        }
        .compare-card.bad {
            background: rgba(255, 255, 255, .04);
            border: 2px dashed rgba(255, 255, 255, .15);
        }
        .compare-card.good {
            background: var(--surface);
            border: 2px solid var(--primary);
            box-shadow: 0 12px 40px rgba(0, 0, 0, .3);
        }
        .compare-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .compare-card.bad h3 {
            color: rgba(255, 255, 255, .6);
        }
        .compare-card.good h3 {
            color: var(--text);
        }
        .compare-card h3 i {
            font-size: 1rem;
        }
        .compare-card.bad h3 i {
            color: var(--danger);
        }
        .compare-card.good h3 i {
            color: var(--success);
        }
        .compare-card ul {
            list-style: none;
            margin: 0;
        }
        .compare-card ul li {
            padding: 8px 0;
            font-size: .9rem;
            line-height: 1.5;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .compare-card.bad ul li {
            color: rgba(255, 255, 255, .55);
        }
        .compare-card.good ul li {
            color: var(--text-secondary);
        }
        .compare-card ul li i {
            color: var(--danger);
            font-size: .85rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .compare-card.good ul li i {
            color: var(--success);
        }
        .compare-vs {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: var(--primary);
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: .95rem;
            z-index: 2;
            border: 3px solid var(--dark);
            box-shadow: 0 4px 20px rgba(232, 89, 12, .4);
        }
        .compare-card.good .btn {
            margin-top: 20px;
        }

        /* FAQ */
        .faq-section {
            background: var(--light);
            padding: var(--space-section) 0;
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion {
            display: flex;
            flex-direction: column;
            gap: 12px;
            list-style: none;
            margin: 0;
        }
        .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color .2s;
        }
        .accordion-item:hover {
            border-color: var(--primary);
        }
        .accordion-title {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 22px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            cursor: pointer;
            position: relative;
            background: var(--surface);
            transition: background .2s;
        }
        .accordion-title:hover {
            background: rgba(232, 89, 12, .02);
            color: var(--primary);
        }
        .accordion-title::after {
            content: '+';
            font-size: 1.4rem;
            font-weight: 300;
            color: var(--primary);
            transition: transform .3s ease;
            flex-shrink: 0;
            margin-left: 12px;
            line-height: 1;
        }
        .accordion-item.is-active .accordion-title::after {
            transform: rotate(45deg);
        }
        .accordion-content {
            padding: 0 24px 22px;
            color: var(--text-secondary);
            font-size: .92rem;
            line-height: 1.7;
        }
        .accordion-content p {
            margin-bottom: 0;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        /* Contact Form */
        .contact-section {
            background: var(--dark);
            padding: var(--space-section) 0;
            position: relative;
            overflow: hidden;
        }
        .contact-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% 50%, rgba(232, 89, 12, .15), transparent 50%);
        }
        .contact-section .section-title {
            color: #fff;
        }
        .contact-section .section-desc {
            color: rgba(255, 255, 255, .6);
        }
        .contact-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 40px;
            max-width: 1000px;
            margin: 40px auto 0;
            box-shadow: 0 20px 60px rgba(0, 0, 0, .3);
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }
        .contact-info {
            flex: 1 1 35%;
            min-width: 240px;
        }
        .contact-info h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text);
        }
        .contact-info p {
            font-size: .9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .contact-info ul {
            list-style: none;
            margin: 0;
        }
        .contact-info ul li {
            padding: 6px 0;
            font-size: .9rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .contact-info ul li i {
            color: var(--primary);
            width: 20px;
            text-align: center;
        }
        .contact-form {
            flex: 1 1 55%;
            min-width: 260px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            font-size: .88rem;
            font-weight: 500;
            color: var(--text);
            margin-bottom: 6px;
            display: block;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: .9rem;
            font-family: var(--font-main);
            color: var(--text);
            background: #FAFAFA;
            outline: none;
            transition: all .2s;
            line-height: 1.5;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(232, 89, 12, .15);
            background: #fff;
        }
        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }
        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236C737A' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
        }
        .form-group .form-error {
            font-size: .78rem;
            color: var(--danger);
            margin-top: 4px;
        }
        .form-submit-row {
            display: flex;
            justify-content: flex-end;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .privacy-note {
            font-size: .78rem;
            color: #A0A8B0;
            margin-top: 14px;
            text-align: right;
            display: block;
        }

        /* Footer */
        .site-footer {
            background: var(--dark-3);
            padding: 60px 0 0;
            color: rgba(255, 255, 255, .6);
            position: relative;
        }
        .site-footer .footer-grid {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .footer-col {
            flex: 1 1 200px;
        }
        .footer-col:first-child {
            flex: 1 1 280px;
        }
        .footer-col h4 {
            font-size: .95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .footer-logo:hover {
            color: #fff;
        }
        .footer-logo .fox-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
        }
        .footer-col p {
            font-size: .86rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, .5);
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
        }
        .footer-col ul li {
            padding: 5px 0;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, .55);
            font-size: .88rem;
            transition: color .2s, padding-left .2s;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, .6);
            font-size: .85rem;
            transition: all .2s;
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: .82rem;
            color: rgba(255, 255, 255, .35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .4);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* Responsive */
        @media print,
        (max-width: 1024px) {
            .brand-slogan {
                display: none;
            }
            .topics-layout {
                flex-direction: column;
            }
            .topics-side {
                flex: 1 1 100%;
            }
            .compare-grid {
                flex-direction: column;
            }
            .compare-vs {
                top: auto;
                bottom: -12px;
                left: 50%;
                transform: translateX(-50%);
            }
            .contact-card {
                flex-direction: column;
                padding: 28px;
            }
        }
        @media (max-width: 768px) {
            .hero {
                padding-top: 3rem;
                padding-bottom: 4rem;
            }
            .hero .grid-x {
                row-gap: 40px;
            }
            .hero-data {
                gap: 16px;
            }
            .hero-data-item strong {
                font-size: 1.3rem;
            }
            .hero-visual {
                padding: 0;
            }
            .hero-badge-float {
                bottom: -16px;
                left: 16px;
            }
            .brand-slogan {
                display: none;
            }
            .search-wrap {
                right: 12px;
                width: calc(100% - 24px);
            }
            .component-tabs {
                padding: 6px 0;
            }
            .channel-nav {
                padding: 6px 0;
                gap: 4px;
            }
            .nav-link {
                padding: 6px 14px;
                font-size: .8rem;
            }
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .matrix-grid .cell {
                width: 100%;
                flex: 0 0 100%;
                max-width: 100%;
            }
            .topics-list {
                flex: 1 1 100%;
            }
            .topics-side {
                width: 100%;
            }
            .topic-item {
                flex-wrap: wrap;
            }
            .topic-item .topic-date {
                display: none;
            }
            .contact-card {
                padding: 20px;
            }
            .form-submit-row {
                justify-content: center;
            }
            .privacy-note {
                text-align: center;
            }
            .footer-grid {
                flex-direction: column;
                gap: 24px;
            }
            .hero-card {
                aspect-ratio: 4 / 3;
            }
            .hero-badge-tag {
                font-size: .72rem;
                padding: 4px 12px;
            }
        }
        @media (hover: none) {
            .btn:active,
            .btn:hover {
                transform: none;
            }
        }

/* roulang page: category1 */
/* ===== 设计系统 ===== */
        :root {
            --primary: #E8590C;
            --primary-dark: #D9480F;
            --accent: #F59F00;
            --dark: #16181C;
            --dark-2: #1E2024;
            --dark-3: #111315;
            --light: #F7F6F4;
            --surface: #FFFFFF;
            --text: #212529;
            --text-secondary: #6C737A;
            --text-light: #A0A8B0;
            --border: #E8E6E2;
            --success: #2B8A3E;
            --danger: #C92A2A;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
            --shadow-md: 0 10px 24px rgba(0, 0, 0, .12);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, .18);
            --space-section: clamp(4rem, 7vw, 6.5rem);
            --font-main: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'PingFangSC-Regular', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--light);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: color .2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        .section {
            padding: var(--space-section) 0;
        }
        .section-alt {
            background: var(--surface);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            font-size: .95rem;
            line-height: 1.4;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all .25s ease;
            letter-spacing: .02em;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(232, 89, 12, .35);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, .7);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .12);
            color: #fff;
            border-color: #fff;
        }
        .btn-outline-primary {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline-primary:hover {
            background: rgba(232, 89, 12, .08);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: .85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-white:hover {
            background: #f0edea;
            color: var(--primary-dark);
            border-color: #f0edea;
            transform: translateY(-2px);
        }
        .btn:active {
            transform: translateY(0) scale(.98);
        }

        /* ===== 徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: .78rem;
            font-weight: 600;
            line-height: 1.4;
            background: var(--accent);
            color: #1a1a1a;
            letter-spacing: .02em;
        }
        .badge-primary {
            background: var(--primary);
            color: #fff;
        }
        .badge-hot {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 10px rgba(232, 89, 12, .4);
        }
        .badge-dark {
            background: var(--dark-2);
            color: #fff;
        }
        .badge-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .6);
            color: #fff;
        }

        /* ===== 头部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, .30);
        }
        .header-brand-row {
            background: var(--dark);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .header-brand-row .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 10px;
            padding-bottom: 10px;
            gap: 16px;
        }
        .brand-left {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: .01em;
            transition: opacity .2s;
        }
        .brand-logo:hover {
            opacity: .88;
            color: #fff;
        }
        .brand-logo .fox-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            flex-shrink: 0;
        }
        .brand-slogan {
            font-size: .82rem;
            color: rgba(255, 255, 255, .55);
            border-left: 1px solid rgba(255, 255, 255, .15);
            padding-left: 14px;
            white-space: nowrap;
            display: none;
        }
        .brand-right {
            display: flex;
            align-items: center;
            gap: 10px;
            position: relative;
        }
        .search-toggle {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .14);
            color: #fff;
            font-size: .9rem;
            cursor: pointer;
            transition: background .2s, border-color .2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .search-toggle:hover {
            background: rgba(255, 255, 255, .15);
            border-color: var(--accent);
        }
        .search-wrap {
            position: absolute;
            right: 0;
            top: 100%;
            z-index: 1200;
            width: 280px;
            background: var(--surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 12px;
            display: none;
            margin-top: 8px;
        }
        .search-wrap.open {
            display: block;
        }
        .search-wrap input {
            width: 100%;
            border: 1px solid var(--border) !important;
            border-radius: var(--radius-sm) !important;
            padding: 8px 14px !important;
            font-size: .88rem !important;
            margin: 0 !important;
            box-shadow: none !important;
        }
        .search-wrap input:focus {
            outline: none !important;
            border-color: var(--primary) !important;
            box-shadow: 0 0 0 2px rgba(232, 89, 12, .15) !important;
        }
        .header-nav-row {
            background: var(--dark-2);
            border-top: 1px solid rgba(255, 255, 255, .04);
        }
        .header-nav-row .container {
            display: flex;
            align-items: center;
            padding-top: 6px;
            padding-bottom: 6px;
        }
        .channel-nav {
            display: flex;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            width: 100%;
            scrollbar-width: none;
            -webkit-overflow-scrolling: touch;
        }
        .channel-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 999px;
            color: rgba(255, 255, 255, .75);
            font-size: .88rem;
            font-weight: 500;
            white-space: nowrap;
            transition: background .2s, color .2s;
        }
        .nav-link:hover {
            color: var(--accent);
            background: rgba(255, 255, 255, .06);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-link.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        /* ===== 分类页 Hero ===== */
        .page-hero {
            background: var(--dark);
            padding: clamp(2.5rem, 4vw, 4rem) 0 clamp(3.5rem, 5vw, 4.5rem);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -60px;
            width: 460px;
            height: 460px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 89, 12, .32) 0%, rgba(245, 159, 0, .12) 40%, transparent 70%);
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -80px;
            width: 300px;
            height: 200px;
            background: radial-gradient(ellipse, rgba(245, 159, 0, .10) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-hero-grid {
            display: flex;
            align-items: center;
            gap: 44px;
            position: relative;
            z-index: 2;
        }
        .page-hero-content {
            flex: 1 1 52%;
        }
        .page-hero-visual {
            flex: 1 1 48%;
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 280px;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            box-shadow: var(--shadow-lg);
        }
        .page-hero-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(22, 24, 28, .55) 0%, rgba(22, 24, 28, .15) 100%);
        }
        .page-hero-badge {
            margin-bottom: 18px;
        }
        .page-hero h1 {
            color: #fff;
            font-size: clamp(2.2rem, 4vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 14px;
            letter-spacing: .02em;
        }
        .page-hero-desc {
            color: rgba(255, 255, 255, .72);
            font-size: 1rem;
            line-height: 1.7;
            max-width: 520px;
            margin-bottom: 26px;
        }
        .page-hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .stat-num {
            font-family: 'Barlow', 'D-DIN', 'PingFang SC', sans-serif;
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: .01em;
        }
        .stat-label {
            font-size: .82rem;
            color: rgba(255, 255, 255, .55);
        }
        .hero-divider {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, var(--primary) 50%, var(--accent) 100%);
            z-index: 3;
        }

        /* ===== 子频道标签条 ===== */
        .sub-nav-wrap {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
            position: sticky;
            top: 108px;
            z-index: 500;
            box-shadow: var(--shadow-sm);
        }
        .sub-nav-list {
            display: flex;
            gap: 10px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding-bottom: 2px;
        }
        .sub-nav-list::-webkit-scrollbar {
            display: none;
        }
        .sub-nav-item {
            padding: 8px 22px;
            border-radius: 999px;
            font-size: .88rem;
            font-weight: 500;
            color: var(--text);
            background: var(--light);
            white-space: nowrap;
            transition: all .25s ease;
        }
        .sub-nav-item:hover {
            color: var(--primary);
            background: rgba(232, 89, 12, .08);
        }
        .sub-nav-item.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        /* ===== 内容列表区 ===== */
        .video-collection {
            padding: var(--space-section) 0;
        }
        .feature-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow .3s ease, transform .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .feature-card-img {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .feature-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }
        .feature-card:hover .feature-card-img img {
            transform: scale(1.03);
        }
        .feature-card-img .badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
        }
        .feature-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-card-body h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
            transition: color .2s;
        }
        .feature-card:hover .feature-card-body h3 {
            color: var(--primary);
        }
        .feature-card-body p {
            color: var(--text-secondary);
            font-size: .92rem;
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }
        .feature-card-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .feature-meta {
            font-size: .8rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feature-meta i {
            margin-right: 4px;
        }

        /* 右侧小图列表 */
        .side-list {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .side-list-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }
        .side-item {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            transition: background .2s;
            align-items: center;
        }
        .side-item:last-child {
            border-bottom: none;
        }
        .side-item:hover {
            background: rgba(232, 89, 12, .03);
        }
        .side-item-thumb {
            width: 72px;
            height: 48px;
            border-radius: 6px;
            overflow: hidden;
            flex-shrink: 0;
            position: relative;
        }
        .side-item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .side-item-thumb::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, .08);
        }
        .side-item-info {
            flex: 1;
            min-width: 0;
        }
        .side-item-title {
            font-size: .85rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.35;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color .2s;
        }
        .side-item:hover .side-item-title {
            color: var(--primary);
        }
        .side-item-meta {
            font-size: .75rem;
            color: var(--text-light);
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .side-item-meta .hot-num {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== 特色内容展示区 ===== */
        .featured-showcase {
            padding: var(--space-section) 0;
            background: var(--dark);
        }
        .showcase-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            padding: 48px 56px;
            box-shadow: var(--shadow-lg);
        }
        .showcase-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(22, 24, 28, .82) 0%, rgba(22, 24, 28, .55) 60%, rgba(22, 24, 28, .25) 100%);
        }
        .showcase-content {
            position: relative;
            z-index: 2;
            max-width: 520px;
        }
        .showcase-content .badge {
            margin-bottom: 14px;
        }
        .showcase-content h2 {
            color: #fff;
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .showcase-content p {
            color: rgba(255, 255, 255, .75);
            line-height: 1.7;
            margin-bottom: 24px;
            font-size: .95rem;
        }
        .showcase-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--space-section) 0;
            background: var(--light);
        }
        .faq-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .faq-header h2 {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .faq-header>p {
            color: var(--text-secondary);
            font-size: .95rem;
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 0 22px;
            transition: border-color .2s, box-shadow .2s;
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 0;
            cursor: pointer;
            list-style: none;
            font-weight: 600;
            font-size: .95rem;
            color: var(--text);
            transition: color .2s;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--primary);
        }
        .faq-item summary::after {
            content: '+';
            font-size: 1.6rem;
            font-weight: 400;
            color: var(--primary);
            transition: transform .3s ease;
            line-height: 1;
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 0 20px;
            color: var(--text-secondary);
            font-size: .9rem;
            line-height: 1.75;
        }

        /* ===== 站内 CTA ===== */
        .contact-cta {
            padding: var(--space-section) 0;
            background: var(--surface);
        }
        .cta-card {
            background: linear-gradient(135deg, var(--primary) 0%, #F0651E 60%, var(--accent) 130%);
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 16px 50px rgba(232, 89, 12, .30);
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
        }
        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(0, 0, 0, .06);
        }
        .cta-card h2 {
            color: #fff;
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 10px;
            position: relative;
            z-index: 2;
        }
        .cta-card p {
            color: rgba(255, 255, 255, .8);
            font-size: .95rem;
            margin-bottom: 26px;
            position: relative;
            z-index: 2;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark-3);
            color: rgba(255, 255, 255, .65);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-logo:hover {
            color: #fff;
            opacity: .88;
        }
        .footer-logo .fox-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
        }
        .footer-col p {
            font-size: .85rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, .5);
            margin-bottom: 18px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, .15);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, .6);
            font-size: .85rem;
            transition: all .25s;
        }
        .footer-social a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .footer-col h4 {
            color: #fff;
            font-size: .95rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, .5);
            font-size: .85rem;
            transition: color .2s;
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: .8rem;
            color: rgba(255, 255, 255, .35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .45);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1024px) {
            .page-hero-grid {
                flex-direction: column;
                gap: 30px;
            }
            .page-hero-visual {
                min-height: 220px;
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .sub-nav-wrap {
                top: 102px;
            }
            .video-collection .feature-col {
                margin-bottom: 24px;
            }
        }
        @media screen and (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
            .brand-slogan {
                display: none;
            }
            .brand-logo {
                font-size: 1.15rem;
            }
            .brand-logo .fox-mark {
                width: 28px;
                height: 28px;
                border-radius: 8px;
            }
            .btn-sm {
                padding: 6px 12px;
                font-size: .78rem;
            }
            .search-toggle {
                width: 34px;
                height: 34px;
            }
            .header-nav-row .container {
                padding-top: 4px;
                padding-bottom: 4px;
            }
            .nav-link {
                padding: 7px 14px;
                font-size: .82rem;
            }
            .page-hero {
                padding-top: 2rem;
                padding-bottom: 2.5rem;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero-desc {
                font-size: .88rem;
            }
            .stat-num {
                font-size: 1.5rem;
            }
            .page-hero-visual {
                min-height: 160px;
            }
            .sub-nav-wrap {
                top: 98px;
                padding: 12px 0;
            }
            .sub-nav-item {
                padding: 7px 16px;
                font-size: .82rem;
            }
            .feature-card-body {
                padding: 18px;
            }
            .feature-card-body h3 {
                font-size: 1.1rem;
            }
            .showcase-card {
                padding: 28px 24px;
            }
            .showcase-actions {
                flex-direction: column;
                gap: 10px;
            }
            .showcase-actions .btn {
                width: 100%;
            }
            .cta-card {
                padding: 32px 24px;
            }
            .cta-actions {
                flex-direction: column;
                gap: 10px;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }
            .faq-item {
                padding: 0 16px;
            }
            .faq-item summary {
                font-size: .88rem;
            }
        }