/* roulang page: index */
:root {
            --primary: #2F5CFF;
            --primary-dark: #1D4FD8;
            --primary-light: #E8F1FF;
            --dark-blue: #1A2233;
            --body-text: #3A4356;
            --muted-text: #7A8494;
            --bg-light: #F7F9FC;
            --bg-card: #FFFFFF;
            --border: #E3E9F2;
            --border-soft: #EDF1F7;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-xs: 4px;
            --shadow-sm: 0 2px 8px rgba(26,34,51,0.04);
            --shadow-md: 0 8px 24px rgba(26,34,51,0.06);
            --shadow-lg: 0 12px 32px rgba(26,34,51,0.12);
            --transition: 200ms ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --gutter: 1.5rem;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            color: var(--body-text);
            background-color: var(--bg-light);
            line-height: 1.75;
            font-size: 1rem;
            letter-spacing: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 3px solid rgba(47,92,255,0.35);
            outline-offset: 2px;
            border-radius: 2px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--dark-blue);
            font-weight: 700;
            letter-spacing: -0.015em;
            line-height: 1.3;
            margin-bottom: 0.75rem;
        }

        h1 {
            font-size: 2.5rem;
            font-weight: 700;
        }

        h2 {
            font-size: 1.75rem;
            font-weight: 600;
        }

        h3 {
            font-size: 1.35rem;
            font-weight: 600;
        }

        p {
            margin-bottom: 1rem;
            color: var(--body-text);
        }

        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        .section {
            padding: 5rem 0;
            position: relative;
        }

        .section-alt {
            background-color: #FFFFFF;
        }

        .section-header {
            margin-bottom: 2.5rem;
            max-width: 720px;
        }

        .section-header .section-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.3rem 0.8rem;
            border-radius: var(--radius-xs);
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
        }

        .section-header h2 {
            margin-bottom: 0.75rem;
        }

        .section-header p {
            color: var(--muted-text);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .section-header.text-center {
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            line-height: 1.4;
            text-decoration: none;
            letter-spacing: 0.01em;
        }

        .btn:hover {
            text-decoration: none;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(47,92,255,0.35);
            outline-offset: 2px;
        }

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

        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(47,92,255,0.3);
        }

        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: none;
        }

        .btn-outline-primary {
            background-color: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline-primary:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-link {
            background: none;
            color: var(--primary);
            padding: 0.5rem 0;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            text-decoration: none;
        }

        .btn-link:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        .btn-link i {
            font-size: 0.8rem;
            transition: transform var(--transition);
        }

        .btn-link:hover i {
            transform: translateX(3px);
        }

        .badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.5rem;
            border-radius: var(--radius-xs);
            letter-spacing: 0.02em;
        }

        .badge-outline {
            background-color: transparent;
            color: var(--muted-text);
            border: 1px solid var(--border);
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }

        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #D5DEEB;
        }

        .card-body {
            padding: 1.5rem;
        }

        .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--dark-blue);
        }

        .card-text {
            font-size: 0.9rem;
            color: var(--muted-text);
            line-height: 1.65;
            margin-bottom: 0;
        }

        .icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 1rem;
            flex-shrink: 0;
        }

        .icon-circle-sm {
            width: 40px;
            height: 40px;
            font-size: 1rem;
        }

        .icon-square {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            margin-bottom: 1rem;
            flex-shrink: 0;
        }

        .section-divider {
            border-top: 1px solid var(--border);
            margin: 2rem 0;
        }

        .bg-white {
            background-color: #FFFFFF;
        }

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

        /* ── Header / Nav ── */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: #FFFFFF;
            transition: box-shadow var(--transition), transform 280ms ease;
            box-shadow: 0 1px 0 var(--border);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(26,34,51,0.1);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            transition: height 280ms ease, opacity 280ms ease;
            opacity: 1;
        }

        .site-header.scrolled .header-brand-row {
            height: 0;
            opacity: 0;
            overflow: hidden;
            padding: 0;
        }

        .header-channel-row {
            display: flex;
            align-items: center;
            height: 44px;
            background-color: var(--bg-light);
            transition: height 280ms ease, background-color 200ms ease;
            border-top: 1px solid var(--border);
        }

        .site-header.scrolled .header-channel-row {
            height: 56px;
            background-color: #FFFFFF;
            border-top: none;
        }

        .header-brand-row .container,
        .header-channel-row .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--dark-blue);
            text-decoration: none;
            white-space: nowrap;
        }

        .logo:hover {
            text-decoration: none;
            color: var(--dark-blue);
        }

        .logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background-color: var(--primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .header-action-btn {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--body-text);
            padding: 0.4rem 0.9rem;
            border-radius: var(--radius-xs);
            transition: all var(--transition);
        }

        .header-action-btn:hover {
            background-color: var(--bg-light);
            color: var(--primary);
            text-decoration: none;
        }

        .channel-nav {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            height: 100%;
        }

        .channel-nav a {
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--dark-blue);
            text-decoration: none;
            padding: 0.25rem 0;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
        }

        .channel-nav a:hover {
            color: var(--primary);
        }

        .channel-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .channel-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 1px;
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: var(--dark-blue);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 0.35rem;
            border-radius: 6px;
            transition: background-color var(--transition);
        }

        .hamburger-btn:hover {
            background-color: var(--bg-light);
        }

        .mobile-nav-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #FFFFFF;
            box-shadow: 0 12px 28px rgba(26,34,51,0.12);
            border-top: 1px solid var(--border);
            padding: 1rem 1.5rem;
            z-index: 1001;
        }

        .mobile-nav-menu.open {
            display: block;
        }

        .mobile-nav-menu a {
            display: block;
            padding: 0.7rem 0;
            font-size: 1rem;
            font-weight: 500;
            color: var(--dark-blue);
            text-decoration: none;
            border-bottom: 1px solid var(--border-soft);
        }

        .mobile-nav-menu a:last-child {
            border-bottom: none;
        }

        .mobile-nav-menu a:hover {
            color: var(--primary);
        }

        /* ── Hero ── */
        .hero-section {
            position: relative;
            padding-top: 108px;
            padding-bottom: 0;
            min-height: 82vh;
            display: flex;
            align-items: center;
            background-color: #FFFFFF;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background-color: var(--bg-light);
            border-bottom-left-radius: 80px;
            z-index: 0;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 3rem;
            flex-wrap: wrap;
            width: 100%;
        }

        .hero-content {
            flex: 1 1 48%;
            max-width: 580px;
            padding: 3rem 0;
        }

        .hero-badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.35rem 1rem;
            border-radius: 20px;
            margin-bottom: 1.25rem;
            letter-spacing: 0.03em;
        }

        .hero-content h1 {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--dark-blue);
            margin-bottom: 1rem;
            line-height: 1.25;
            letter-spacing: -0.02em;
        }

        .hero-content .hero-subtitle {
            font-size: 1.05rem;
            color: var(--muted-text);
            line-height: 1.8;
            margin-bottom: 2rem;
            max-width: 500px;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .hero-image-wrapper {
            flex: 1 1 42%;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 2rem 0;
        }

        .hero-image-card {
            background: #FFFFFF;
            border-radius: 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            width: 100%;
            max-width: 480px;
            aspect-ratio: 4/3;
            position: relative;
        }

        .hero-image-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .hero-image-card .hero-card-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 1.5rem;
            background: linear-gradient(180deg, transparent 0%, rgba(26,34,51,0.75) 100%);
            color: #FFFFFF;
            border-bottom-left-radius: 20px;
            border-bottom-right-radius: 20px;
        }

        .hero-image-card .hero-card-overlay span {
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        /* ── Metrics ── */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .metric-card {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 1.75rem 1.5rem;
            text-align: center;
            transition: all var(--transition);
        }

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

        .metric-value {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 0.4rem;
            letter-spacing: -0.02em;
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--muted-text);
            font-weight: 500;
            line-height: 1.4;
        }

        /* ── Category Grid ── */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .category-card {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }

        .category-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: #D5DEEB;
        }

        .category-card .cat-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: var(--bg-light);
        }

        .category-card .cat-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }

        .category-card:hover .cat-img img {
            transform: scale(1.05);
        }

        .category-card .cat-body {
            padding: 1.25rem;
        }

        .category-card .cat-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark-blue);
            margin-bottom: 0.4rem;
        }

        .category-card .cat-desc {
            font-size: 0.85rem;
            color: var(--muted-text);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .category-more-link {
            display: inline-block;
            margin-top: 1.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--primary);
            text-decoration: none;
        }

        .category-more-link:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        .category-more-link i {
            font-size: 0.8rem;
            transition: transform var(--transition);
        }

        .category-more-link:hover i {
            transform: translateX(4px);
        }

        /* ── Feature Cards ── */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .feature-card {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 2rem;
            transition: all var(--transition);
            height: 100%;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: #D5DEEB;
        }

        /* ── Comparison ── */
        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }

        .comparison-col {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 2rem;
        }

        .comparison-col.highlight {
            border-color: var(--primary);
            background-color: var(--primary-light);
            box-shadow: 0 8px 24px rgba(47,92,255,0.10);
        }

        .comparison-col h3 {
            font-size: 1.2rem;
            margin-bottom: 1.25rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

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

        .comparison-col ul li {
            padding: 0.6rem 0;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--body-text);
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            border-bottom: 1px solid var(--border-soft);
        }

        .comparison-col ul li:last-child {
            border-bottom: none;
        }

        .comparison-col ul li i {
            font-size: 1rem;
            margin-top: 0.15rem;
        }

        .check-icon {
            color: #2F6B4F;
        }

        .cross-icon {
            color: #B85C5C;
        }

        /* ── Scene Cards ── */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .scene-card {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }

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

        .scene-card .scene-img {
            aspect-ratio: 3/2;
            overflow: hidden;
            background-color: var(--bg-light);
        }

        .scene-card .scene-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }

        .scene-card:hover .scene-img img {
            transform: scale(1.04);
        }

        .scene-card .scene-body {
            padding: 1.25rem;
        }

        .scene-card .scene-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark-blue);
            margin-bottom: 0.4rem;
        }

        .scene-card .scene-desc {
            font-size: 0.85rem;
            color: var(--muted-text);
            margin-bottom: 0;
        }

        /* ── Timeline ── */
        .timeline {
            position: relative;
            padding-left: 2rem;
        }

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

        .timeline-item {
            position: relative;
            padding-bottom: 2rem;
            padding-left: 1.5rem;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: -28px;
            top: 4px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background-color: var(--primary);
            border: 3px solid #FFFFFF;
            box-shadow: 0 0 0 2px var(--primary);
        }

        .timeline-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.35rem;
        }

        .timeline-item p {
            font-size: 0.9rem;
            color: var(--muted-text);
            margin-bottom: 0;
        }

        /* ── News List ── */
        .news-list-col {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 1rem;
            transition: all var(--transition);
            text-decoration: none;
            color: inherit;
        }

        .news-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            text-decoration: none;
            color: inherit;
            border-color: #D5DEEB;
        }

        .news-item .news-thumb {
            width: 120px;
            min-width: 120px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background-color: var(--bg-light);
        }

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

        .news-item .news-content {
            flex: 1;
            min-width: 0;
        }

        .news-item .news-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark-blue);
            margin-bottom: 0.35rem;
            display: block;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .news-item .news-meta {
            font-size: 0.8rem;
            color: var(--muted-text);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .news-item .news-badge {
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.15rem 0.5rem;
            border-radius: var(--radius-xs);
        }

        .news-empty {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px dashed var(--border);
            padding: 2rem;
            text-align: center;
            color: var(--muted-text);
            font-size: 0.95rem;
        }

        /* ── Guarantee ── */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 1.25rem;
        }

        .guarantee-item {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 1.75rem 1.25rem;
            text-align: center;
            transition: all var(--transition);
            height: 100%;
        }

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

        .guarantee-item .icon-circle {
            margin-left: auto;
            margin-right: auto;
        }

        .guarantee-item h4 {
            font-size: 1rem;
            margin-bottom: 0.35rem;
        }

        .guarantee-item p {
            font-size: 0.82rem;
            color: var(--muted-text);
            margin-bottom: 0;
        }

        /* ── Quick Q&A ── */
        .quick-qa-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .qa-item {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 1.5rem;
            transition: all var(--transition);
        }

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

        .qa-item .qa-question {
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark-blue);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
        }

        .qa-item .qa-question i {
            color: var(--primary);
            font-size: 1.1rem;
            margin-top: 0.1rem;
        }

        .qa-item .qa-answer {
            font-size: 0.9rem;
            color: var(--muted-text);
            margin-bottom: 0;
            line-height: 1.7;
            padding-left: 1.7rem;
        }

        /* ── Device ── */
        .device-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .device-card {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }

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

        .device-card .device-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: var(--bg-light);
        }

        .device-card .device-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .device-card .device-body {
            padding: 1.25rem;
        }

        .device-card h4 {
            font-size: 1rem;
            margin-bottom: 0.35rem;
        }

        .device-card p {
            font-size: 0.85rem;
            color: var(--muted-text);
            margin-bottom: 0;
        }

        /* ── Calendar ── */
        .calendar-grid {
            display: grid;
            grid-template-columns: repeat(7, 1fr);
            gap: 0.75rem;
        }

        .calendar-day {
            background: #FFFFFF;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 1rem 0.75rem;
            text-align: center;
            transition: all var(--transition);
        }

        .calendar-day:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }

        .calendar-day .day-name {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--muted-text);
            margin-bottom: 0.5rem;
        }

        .calendar-day .day-content {
            font-size: 0.82rem;
            color: var(--dark-blue);
            font-weight: 500;
            line-height: 1.4;
        }

        .calendar-day.today {
            border-color: var(--primary);
            background-color: var(--primary-light);
        }

        /* ── Reviews ── */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .review-card {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 1.75rem;
            transition: all var(--transition);
            height: 100%;
        }

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

        .review-stars {
            color: #E8A87C;
            font-size: 0.95rem;
            margin-bottom: 0.75rem;
            letter-spacing: 0.08em;
        }

        .review-text {
            font-size: 0.95rem;
            color: var(--body-text);
            line-height: 1.7;
            margin-bottom: 1rem;
        }

        .review-author {
            font-size: 0.82rem;
            color: var(--muted-text);
            font-weight: 500;
        }

        /* ── Compliance ── */
        .compliance-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }

        .compliance-item {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 1.25rem;
        }

        .compliance-item i {
            color: var(--primary);
            font-size: 1.25rem;
            margin-top: 0.1rem;
            flex-shrink: 0;
        }

        .compliance-item h5 {
            font-size: 0.95rem;
            margin-bottom: 0.25rem;
        }

        .compliance-item p {
            font-size: 0.82rem;
            color: var(--muted-text);
            margin-bottom: 0;
        }

        /* ── Form ── */
        .form-card {
            background: #FFFFFF;
            border-radius: 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            padding: 2.5rem;
            max-width: 680px;
            margin: 0 auto;
        }

        .form-control {
            background-color: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0.65rem 0.9rem;
            font-size: 0.95rem;
            color: var(--dark-blue);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47,92,255,0.15);
            outline: none;
        }

        .form-label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--dark-blue);
            margin-bottom: 0.4rem;
        }

        .form-privacy {
            font-size: 0.78rem;
            color: var(--muted-text);
            margin-top: 1rem;
            margin-bottom: 0;
            text-align: center;
        }

        /* ── Footer ── */
        .site-footer {
            background-color: var(--dark-blue);
            color: #B8C2D4;
            padding: 4rem 0 1.5rem;
            margin-top: 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .site-footer .footer-brand h4 {
            color: #FFFFFF;
            font-size: 1.1rem;
            margin-bottom: 0.75rem;
            font-weight: 600;
        }

        .site-footer .footer-brand p {
            color: #B8C2D4;
            font-size: 0.85rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .site-footer h5 {
            color: #FFFFFF;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

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

        .site-footer ul li {
            margin-bottom: 0.5rem;
        }

        .site-footer ul li a {
            color: #B8C2D4;
            font-size: 0.85rem;
            text-decoration: none;
            transition: color var(--transition);
        }

        .site-footer ul li a:hover {
            color: #FFFFFF;
            text-decoration: none;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.78rem;
            color: #8A94A8;
        }

        /* ── Responsive ── */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 1rem;
            }
            .category-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1rem;
            }
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .guarantee-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1rem;
            }
            .device-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1rem;
            }
            .calendar-grid {
                grid-template-columns: repeat(7, 1fr);
                gap: 0.5rem;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 3rem 0;
            }
            .hero-section {
                padding-top: 80px;
                min-height: auto;
                padding-bottom: 2rem;
            }
            .hero-section::before {
                display: none;
            }
            .hero-inner {
                flex-direction: column;
                gap: 1.5rem;
            }
            .hero-content {
                max-width: 100%;
                padding: 2rem 0 0;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-image-wrapper {
                padding: 1rem 0 2rem;
                width: 100%;
            }
            .hero-image-card {
                max-width: 100%;
                aspect-ratio: 16/9;
            }
            .header-channel-row {
                height: 44px;
            }
            .site-header.scrolled .header-channel-row {
                height: 56px;
            }
            .hamburger-btn {
                display: block;
            }
            .channel-nav {
                display: none;
            }
            .mobile-nav-menu {
                display: block;
                max-height: 0;
                overflow: hidden;
                transition: max-height 300ms ease, padding 300ms ease;
                padding: 0 1.5rem;
            }
            .mobile-nav-menu.open {
                max-height: 300px;
                padding: 1rem 1.5rem;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .metric-card {
                padding: 1.25rem 1rem;
            }
            .metric-value {
                font-size: 1.8rem;
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .scene-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
            .guarantee-item {
                padding: 1.25rem 0.75rem;
            }
            .quick-qa-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .device-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .calendar-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 0.5rem;
            }
            .calendar-day:nth-child(n+5) {
                display: none;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .compliance-list {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .form-card {
                padding: 1.5rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            h1 {
                font-size: 1.75rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .section {
                padding: 2.25rem 0;
            }
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .hero-content .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-cta-group .btn {
                width: 100%;
                justify-content: center;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
            .metric-value {
                font-size: 1.5rem;
            }
            .metric-label {
                font-size: 0.78rem;
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .guarantee-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.65rem;
            }
            .guarantee-item {
                padding: 1rem 0.65rem;
            }
            .guarantee-item h4 {
                font-size: 0.9rem;
            }
            .guarantee-item p {
                font-size: 0.75rem;
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.75rem;
                padding: 0.9rem;
            }
            .news-item .news-thumb {
                width: 100%;
                min-width: 100%;
                height: auto;
                aspect-ratio: 16/9;
            }
            .news-item .news-title {
                white-space: normal;
                font-size: 0.95rem;
            }
            .quick-qa-grid {
                gap: 0.75rem;
            }
            .qa-item {
                padding: 1.1rem;
            }
            .calendar-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 0.4rem;
            }
            .calendar-day:nth-child(n+4) {
                display: none;
            }
            .calendar-day {
                padding: 0.65rem 0.4rem;
            }
            .calendar-day .day-name {
                font-size: 0.7rem;
            }
            .calendar-day .day-content {
                font-size: 0.72rem;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .review-card {
                padding: 1.25rem;
            }
            .form-card {
                padding: 1.25rem;
            }
            .btn {
                padding: 0.65rem 1.1rem;
                font-size: 0.9rem;
            }
        }

/* roulang page: category1 */
:root {
        --primary: #2F5CFF;
        --primary-dark: #1D4FD8;
        --primary-light: #E8F1FF;
        --dark-blue: #1A2233;
        --body-text: #3A4356;
        --muted-text: #7A8494;
        --bg-light: #F7F9FC;
        --bg-card: #FFFFFF;
        --border: #E3E9F2;
        --border-soft: #EDF1F7;
        --radius: 14px;
        --radius-sm: 8px;
        --radius-xs: 4px;
        --shadow-sm: 0 2px 8px rgba(26,34,51,0.04);
        --shadow-md: 0 8px 24px rgba(26,34,51,0.06);
        --shadow-lg: 0 12px 32px rgba(26,34,51,0.12);
        --transition: 200ms ease;
        --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        --gutter: 1.5rem;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-sans);
        color: var(--body-text);
        background-color: var(--bg-light);
        line-height: 1.75;
        font-size: 1rem;
        letter-spacing: 0;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
    }
    a:hover {
        color: var(--primary-dark);
        text-decoration: underline;
    }
    a:focus-visible {
        outline: 3px solid rgba(47,92,255,0.35);
        outline-offset: 2px;
        border-radius: 2px;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    button,
    input,
    select,
    textarea {
        font-family: inherit;
        font-size: inherit;
    }
    .container {
        max-width: 1200px;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
    .section {
        padding: 4.5rem 0;
        position: relative;
    }
    .section-alt {
        background-color: #FFFFFF;
    }
    .section-header {
        margin-bottom: 2.5rem;
        max-width: 720px;
    }
    .section-header .section-tag {
        display: inline-block;
        background-color: var(--primary-light);
        color: var(--primary);
        font-size: 0.8rem;
        font-weight: 600;
        padding: 0.3rem 0.8rem;
        border-radius: var(--radius-xs);
        margin-bottom: 0.75rem;
        letter-spacing: 0.02em;
    }
    .section-header h2 {
        margin-bottom: 0.75rem;
        color: var(--dark-blue);
        font-weight: 700;
        font-size: 1.6rem;
        letter-spacing: -0.01em;
    }
    .section-header p {
        color: var(--muted-text);
        font-size: 0.95rem;
        line-height: 1.7;
        margin-bottom: 0;
    }
    .section-header.text-center {
        margin-left: auto;
        margin-right: auto;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        font-weight: 600;
        font-size: 0.95rem;
        padding: 0.75rem 1.5rem;
        border-radius: var(--radius-sm);
        transition: all var(--transition);
        border: none;
        cursor: pointer;
        line-height: 1.4;
        text-decoration: none;
        letter-spacing: 0.01em;
    }
    .btn:hover {
        text-decoration: none;
    }
    .btn:focus-visible {
        outline: 3px solid rgba(47,92,255,0.35);
        outline-offset: 2px;
    }
    .btn-primary {
        background-color: var(--primary);
        color: #FFFFFF;
    }
    .btn-primary:hover {
        background-color: var(--primary-dark);
        color: #FFFFFF;
        transform: translateY(-1px);
        box-shadow: 0 8px 20px rgba(47,92,255,0.3);
    }
    .btn-primary:active {
        transform: scale(0.98);
        box-shadow: none;
    }
    .btn-outline-primary {
        background-color: transparent;
        color: var(--primary);
        border: 2px solid var(--primary);
    }
    .btn-outline-primary:hover {
        background-color: var(--primary-light);
        color: var(--primary-dark);
        border-color: var(--primary-dark);
        transform: translateY(-1px);
    }
    .btn-link {
        background: none;
        color: var(--primary);
        padding: 0.5rem 0;
        font-weight: 600;
        font-size: 0.9rem;
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        text-decoration: none;
    }
    .btn-link:hover {
        color: var(--primary-dark);
        text-decoration: none;
    }
    .btn-link i {
        font-size: 0.8rem;
        transition: transform var(--transition);
    }
    .btn-link:hover i {
        transform: translateX(3px);
    }
    .badge {
        display: inline-block;
        background-color: var(--primary-light);
        color: var(--primary);
        font-size: 0.75rem;
        font-weight: 600;
        padding: 0.2rem 0.5rem;
        border-radius: var(--radius-xs);
        letter-spacing: 0.02em;
    }
    .badge-outline {
        background-color: transparent;
        color: var(--muted-text);
        border: 1px solid var(--border);
    }
    .card {
        background: var(--bg-card);
        border-radius: var(--radius);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-md);
        overflow: hidden;
        transition: all var(--transition);
        height: 100%;
    }
    .card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-2px);
        border-color: #D5DEEB;
    }
    .card-body {
        padding: 1.5rem;
    }
    .card-title {
        font-size: 1.1rem;
        font-weight: 600;
        margin-bottom: 0.5rem;
        color: var(--dark-blue);
    }
    .card-text {
        font-size: 0.9rem;
        color: var(--muted-text);
        line-height: 1.65;
    }

    /* ===== 导航 ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background-color: #FFFFFF;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 2px 12px rgba(26,34,51,0.04);
        transition: all var(--transition);
    }
    .brand-row {
        height: 64px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        transition: height var(--transition);
    }
    .brand-logo {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        font-weight: 700;
        font-size: 1.15rem;
        color: var(--dark-blue);
        text-decoration: none;
        white-space: nowrap;
    }
    .brand-logo:hover {
        color: var(--primary);
        text-decoration: none;
    }
    .brand-logo .logo-icon {
        width: 34px;
        height: 34px;
        background: var(--primary);
        color: #FFFFFF;
        border-radius: var(--radius-xs);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 0.95rem;
        flex-shrink: 0;
    }
    .brand-actions {
        display: flex;
        align-items: center;
        gap: 0.75rem;
    }
    .brand-actions .btn {
        padding: 0.45rem 1rem;
        font-size: 0.85rem;
    }
    .channel-nav {
        height: 44px;
        display: flex;
        align-items: center;
        gap: 1.25rem;
        background-color: var(--bg-light);
        border-top: 1px solid var(--border-soft);
        padding-left: 0;
        overflow-x: auto;
        white-space: nowrap;
        scrollbar-width: thin;
        scrollbar-color: var(--border) transparent;
    }
    .channel-nav::-webkit-scrollbar {
        height: 3px;
    }
    .channel-nav::-webkit-scrollbar-thumb {
        background: var(--border);
        border-radius: 99px;
    }
    .channel-nav a {
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--body-text);
        padding: 0.25rem 0.25rem;
        position: relative;
        white-space: nowrap;
        text-decoration: none;
        line-height: 1.4;
    }
    .channel-nav a:hover {
        color: var(--primary);
        text-decoration: none;
    }
    .channel-nav a::after {
        content: '';
        position: absolute;
        left: 0;
        bottom: -2px;
        width: 0;
        height: 2px;
        background: var(--primary);
        transition: width var(--transition);
    }
    .channel-nav a:hover::after,
    .channel-nav a.active::after {
        width: 100%;
    }
    .channel-nav a.active {
        color: var(--primary);
        font-weight: 600;
    }
    .navbar-toggler-custom {
        display: none;
        background: none;
        border: none;
        font-size: 1.4rem;
        color: var(--dark-blue);
        cursor: pointer;
        padding: 0.25rem 0.5rem;
        border-radius: var(--radius-xs);
        transition: background var(--transition);
    }
    .navbar-toggler-custom:hover {
        background: var(--primary-light);
        color: var(--primary);
    }
    .site-header.scrolled .brand-row {
        height: 52px;
    }
    .site-header.scrolled .brand-logo {
        font-size: 1rem;
    }
    .site-header.scrolled .logo-icon {
        width: 28px;
        height: 28px;
        font-size: 0.8rem;
    }
    .site-header.scrolled .channel-nav {
        height: 36px;
    }

    /* ===== 分类页头部 ===== */
    .category-hero {
        background: linear-gradient(135deg, #FFFFFF 0%, var(--primary-light) 100%);
        padding: 3rem 0 2.5rem;
        border-bottom: 1px solid var(--border);
        position: relative;
        overflow: hidden;
    }
    .category-hero::before {
        content: '';
        position: absolute;
        right: -80px;
        top: -80px;
        width: 280px;
        height: 280px;
        border-radius: 50%;
        background: rgba(47,92,255,0.06);
        pointer-events: none;
    }
    .category-hero::after {
        content: '';
        position: absolute;
        right: 40px;
        bottom: -120px;
        width: 220px;
        height: 220px;
        border-radius: 50%;
        background: rgba(47,92,255,0.04);
        pointer-events: none;
    }
    .category-hero .breadcrumb {
        margin-bottom: 0.75rem;
        font-size: 0.85rem;
        color: var(--muted-text);
        background: none;
        padding: 0;
    }
    .category-hero .breadcrumb a {
        color: var(--muted-text);
    }
    .category-hero .breadcrumb a:hover {
        color: var(--primary);
        text-decoration: none;
    }
    .category-hero h1 {
        font-size: 2.2rem;
        font-weight: 700;
        color: var(--dark-blue);
        margin-bottom: 0.75rem;
        letter-spacing: -0.01em;
        line-height: 1.3;
    }
    .category-hero .cat-desc {
        font-size: 1rem;
        color: var(--body-text);
        max-width: 680px;
        line-height: 1.75;
        margin-bottom: 0;
    }
    .category-hero .cat-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
        margin-top: 1rem;
    }
    .category-hero .cat-meta .badge {
        font-size: 0.8rem;
        padding: 0.35rem 0.75rem;
        background: #FFFFFF;
        color: var(--primary);
        border: 1px solid var(--border);
        border-radius: 99px;
    }

    /* ===== 筛选栏 ===== */
    .filter-bar {
        background: #FFFFFF;
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        padding: 1rem 1.25rem;
        margin-bottom: 2rem;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 1rem;
    }
    .filter-bar .filter-group {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 0.5rem;
    }
    .filter-bar .filter-label {
        font-size: 0.85rem;
        font-weight: 600;
        color: var(--dark-blue);
        margin-right: 0.25rem;
    }
    .filter-bar .filter-chip {
        display: inline-flex;
        align-items: center;
        padding: 0.35rem 0.85rem;
        font-size: 0.8rem;
        font-weight: 500;
        color: var(--muted-text);
        background: var(--bg-light);
        border: 1px solid var(--border);
        border-radius: 99px;
        cursor: pointer;
        transition: all var(--transition);
        user-select: none;
    }
    .filter-bar .filter-chip:hover {
        border-color: var(--primary);
        color: var(--primary);
        text-decoration: none;
    }
    .filter-bar .filter-chip.active {
        background: var(--primary);
        color: #FFFFFF;
        border-color: var(--primary);
    }

    /* ===== 分类卡片网格 ===== */
    .movie-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
    .movie-card {
        background: #FFFFFF;
        border-radius: var(--radius);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-md);
        overflow: hidden;
        transition: all var(--transition);
        display: flex;
        flex-direction: column;
    }
    .movie-card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-2px);
        border-color: #D5DEEB;
    }
    .movie-card .movie-thumb {
        position: relative;
        aspect-ratio: 16/9;
        overflow: hidden;
        background: var(--bg-light);
    }
    .movie-card .movie-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform var(--transition);
    }
    .movie-card:hover .movie-thumb img {
        transform: scale(1.04);
    }
    .movie-card .movie-thumb .thumb-badge {
        position: absolute;
        top: 0.75rem;
        left: 0.75rem;
        display: flex;
        gap: 0.35rem;
    }
    .movie-card .movie-body {
        padding: 1.25rem;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .movie-card .movie-title {
        font-size: 1.05rem;
        font-weight: 600;
        color: var(--dark-blue);
        margin-bottom: 0.5rem;
        line-height: 1.4;
    }
    .movie-card .movie-desc {
        font-size: 0.85rem;
        color: var(--muted-text);
        line-height: 1.6;
        margin-bottom: 0.75rem;
        flex: 1;
    }
    .movie-card .movie-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 0.8rem;
        color: var(--muted-text);
    }
    .movie-card .movie-footer .badge {
        font-size: 0.7rem;
        padding: 0.15rem 0.45rem;
    }

    /* ===== 分类说明 ===== */
    .cat-info-panel {
        background: #FFFFFF;
        border-radius: var(--radius);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        padding: 2rem;
    }
    .cat-info-panel h3 {
        font-size: 1.25rem;
        font-weight: 600;
        color: var(--dark-blue);
        margin-bottom: 1rem;
    }
    .cat-info-panel p {
        font-size: 0.95rem;
        color: var(--body-text);
        line-height: 1.8;
        margin-bottom: 0.5rem;
    }

    /* ===== 标签云 ===== */
    .tag-cloud {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    .tag-cloud .cloud-tag {
        display: inline-flex;
        align-items: center;
        padding: 0.45rem 1rem;
        font-size: 0.85rem;
        font-weight: 500;
        color: var(--body-text);
        background: #FFFFFF;
        border: 1px solid var(--border);
        border-radius: 99px;
        transition: all var(--transition);
        cursor: default;
    }
    .tag-cloud .cloud-tag:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: var(--primary-light);
        text-decoration: none;
    }

    /* ===== 公告条 ===== */
    .notice-bar {
        background: var(--primary-light);
        border-left: 4px solid var(--primary);
        border-radius: var(--radius-sm);
        padding: 1rem 1.25rem;
        display: flex;
        align-items: flex-start;
        gap: 0.75rem;
    }
    .notice-bar i {
        color: var(--primary);
        font-size: 1.1rem;
        margin-top: 0.15rem;
    }
    .notice-bar p {
        margin: 0;
        font-size: 0.9rem;
        color: var(--body-text);
        line-height: 1.6;
    }

    /* ===== CTA卡片 ===== */
    .cta-card {
        background: linear-gradient(135deg, var(--dark-blue) 0%, #25314A 100%);
        border-radius: var(--radius);
        padding: 2.5rem;
        color: #FFFFFF;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: 1.5rem;
        box-shadow: var(--shadow-lg);
    }
    .cta-card h3 {
        font-size: 1.4rem;
        font-weight: 700;
        color: #FFFFFF;
        margin-bottom: 0.5rem;
    }
    .cta-card p {
        font-size: 0.95rem;
        color: rgba(255,255,255,0.75);
        margin: 0;
        max-width: 480px;
        line-height: 1.6;
    }
    .cta-card .btn {
        background: #FFFFFF;
        color: var(--dark-blue);
        font-weight: 600;
    }
    .cta-card .btn:hover {
        background: var(--primary-light);
        color: var(--primary-dark);
        transform: translateY(-1px);
        box-shadow: 0 6px 18px rgba(0,0,0,0.2);
    }

    /* ===== 资讯列表 ===== */
    .news-list {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }
    .news-item {
        display: flex;
        gap: 1rem;
        background: #FFFFFF;
        border-radius: var(--radius);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        padding: 1rem;
        transition: all var(--transition);
        align-items: center;
    }
    .news-item:hover {
        box-shadow: var(--shadow-md);
        border-color: #D5DEEB;
    }
    .news-item .news-thumb {
        flex-shrink: 0;
        width: 160px;
        height: 100px;
        border-radius: var(--radius-sm);
        overflow: hidden;
        background: var(--bg-light);
    }
    .news-item .news-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .news-item .news-content {
        flex: 1;
        min-width: 0;
    }
    .news-item .news-title {
        font-size: 0.95rem;
        font-weight: 600;
        color: var(--dark-blue);
        margin-bottom: 0.3rem;
        line-height: 1.4;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .news-item .news-desc {
        font-size: 0.85rem;
        color: var(--muted-text);
        line-height: 1.5;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        margin-bottom: 0.3rem;
    }
    .news-item .news-meta {
        display: flex;
        gap: 0.5rem;
        font-size: 0.75rem;
        color: var(--muted-text);
        align-items: center;
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background: var(--dark-blue);
        color: rgba(255,255,255,0.75);
        padding: 3.5rem 0 1.5rem;
        margin-top: 0;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr;
        gap: 2rem;
        padding-bottom: 2rem;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        margin-bottom: 1.5rem;
    }
    .site-footer h4 {
        color: #FFFFFF;
        font-weight: 700;
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
    }
    .site-footer h5 {
        color: #FFFFFF;
        font-weight: 600;
        font-size: 0.95rem;
        margin-bottom: 0.75rem;
    }
    .site-footer p {
        font-size: 0.85rem;
        line-height: 1.7;
        margin-bottom: 0;
    }
    .site-footer ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .site-footer ul li {
        margin-bottom: 0.5rem;
    }
    .site-footer ul li a {
        color: rgba(255,255,255,0.7);
        font-size: 0.85rem;
        text-decoration: none;
        transition: color var(--transition);
    }
    .site-footer ul li a:hover {
        color: #FFFFFF;
        text-decoration: none;
    }
    .footer-bottom {
        display: flex;
        flex-wrap: wrap;
        gap: 1rem 2rem;
        font-size: 0.8rem;
        color: rgba(255,255,255,0.55);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 991px) {
        .movie-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
        .category-hero h1 {
            font-size: 1.8rem;
        }
    }
    @media (max-width: 767px) {
        .navbar-toggler-custom {
            display: block;
        }
        .brand-row {
            height: 56px;
        }
        .channel-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            flex-direction: column;
            height: auto;
            padding: 0.75rem 1.25rem;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            z-index: 100;
            align-items: flex-start;
            gap: 0.5rem;
        }
        .channel-nav.open {
            display: flex;
        }
        .channel-nav a {
            width: 100%;
            padding: 0.5rem 0;
        }
        .site-header.scrolled .brand-row {
            height: 52px;
        }
        .section {
            padding: 2.5rem 0;
        }
        .category-hero {
            padding: 2rem 0 1.5rem;
        }
        .category-hero h1 {
            font-size: 1.5rem;
        }
        .movie-grid {
            grid-template-columns: 1fr;
        }
        .news-item {
            flex-direction: column;
        }
        .news-item .news-thumb {
            width: 100%;
            height: 160px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        .cta-card {
            flex-direction: column;
            text-align: center;
        }
        .cta-card p {
            max-width: 100%;
        }
        .filter-bar {
            flex-direction: column;
            align-items: flex-start;
        }
        .brand-actions .btn-outline-primary {
            display: none;
        }
    }
    @media (max-width: 520px) {
        .movie-grid {
            grid-template-columns: 1fr;
        }
        .section-header h2 {
            font-size: 1.3rem;
        }
        .brand-logo {
            font-size: 0.95rem;
        }
        .brand-logo .logo-icon {
            width: 28px;
            height: 28px;
            font-size: 0.8rem;
        }
    }

/* roulang page: article */
:root {
            --primary: #2F5CFF;
            --primary-dark: #1D4FD8;
            --primary-light: #E8F1FF;
            --dark-blue: #1A2233;
            --body-text: #3A4356;
            --muted-text: #7A8494;
            --bg-light: #F7F9FC;
            --bg-card: #FFFFFF;
            --border: #E3E9F2;
            --border-soft: #EDF1F7;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-xs: 4px;
            --shadow-sm: 0 2px 8px rgba(26,34,51,0.04);
            --shadow-md: 0 8px 24px rgba(26,34,51,0.06);
            --shadow-lg: 0 12px 32px rgba(26,34,51,0.12);
            --transition: 200ms ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --gutter: 1.5rem;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            color: var(--body-text);
            background-color: var(--bg-light);
            line-height: 1.75;
            font-size: 1rem;
            letter-spacing: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 3px solid rgba(47,92,255,0.35);
            outline-offset: 2px;
            border-radius: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        .section {
            padding: 4rem 0;
            position: relative;
        }
        .section-alt {
            background-color: #FFFFFF;
        }
        .section-header {
            margin-bottom: 2.5rem;
            max-width: 720px;
        }
        .section-header .section-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.3rem 0.8rem;
            border-radius: var(--radius-xs);
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
        }
        .section-header h2 {
            margin-bottom: 0.75rem;
            color: var(--dark-blue);
            font-weight: 700;
            font-size: 1.75rem;
        }
        .section-header p {
            color: var(--muted-text);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .section-header.text-center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            line-height: 1.4;
            text-decoration: none;
            letter-spacing: 0.01em;
        }
        .btn:hover {
            text-decoration: none;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(47,92,255,0.35);
            outline-offset: 2px;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(47,92,255,0.3);
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: none;
        }
        .btn-outline-primary {
            background-color: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline-primary:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-link {
            background: none;
            color: var(--primary);
            padding: 0.5rem 0;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            text-decoration: none;
            border: none;
        }
        .btn-link:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        .btn-link i {
            font-size: 0.8rem;
            transition: transform var(--transition);
        }
        .btn-link:hover i {
            transform: translateX(3px);
        }
        .badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.5rem;
            border-radius: var(--radius-xs);
            letter-spacing: 0.02em;
        }
        .badge-outline {
            background-color: transparent;
            color: var(--muted-text);
            border: 1px solid var(--border);
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #D5DEEB;
        }
        .card-body {
            padding: 1.5rem;
        }
        .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--dark-blue);
        }
        .card-text {
            font-size: 0.9rem;
            color: var(--muted-text);
            line-height: 1.65;
            margin-bottom: 0.75rem;
        }
        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-soft);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(26,34,51,0.08);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.8rem 0;
            min-height: 64px;
            transition: min-height var(--transition), padding var(--transition);
        }
        .site-header.scrolled .brand-row {
            min-height: 48px;
            padding: 0.4rem 0;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--dark-blue);
            text-decoration: none;
            white-space: nowrap;
        }
        .brand-logo:hover {
            color: var(--dark-blue);
            text-decoration: none;
        }
        .brand-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--primary);
            color: #FFFFFF;
            border-radius: 8px;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .brand-actions a {
            font-size: 0.85rem;
            font-weight: 600;
        }
        .channel-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.5rem 0;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .channel-nav::-webkit-scrollbar {
            display: none;
        }
        .channel-nav a {
            display: inline-flex;
            align-items: center;
            padding: 0.4rem 1rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--body-text);
            border-radius: 6px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .channel-nav a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
            text-decoration: none;
        }
        .channel-nav a.active {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .navbar-toggler {
            display: none;
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 0.4rem 0.65rem;
            background: #FFFFFF;
            color: var(--dark-blue);
            font-size: 1.1rem;
            cursor: pointer;
            transition: all var(--transition);
        }
        .navbar-toggler:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .mobile-menu-collapse {
            display: none;
        }
        /* Article Breadcrumb */
        .article-breadcrumb {
            padding: 1.5rem 0 0.5rem;
        }
        .breadcrumb {
            margin: 0;
            padding: 0;
            background: transparent;
            font-size: 0.85rem;
            color: var(--muted-text);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.4rem;
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        .breadcrumb .separator {
            color: #B6C0CF;
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--muted-text);
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 420px;
        }
        /* Article Header Section */
        .article-header-section {
            padding-top: 1.5rem;
            padding-bottom: 2rem;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-soft);
        }
        .article-header-card {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 2.5rem;
            position: relative;
        }
        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.25rem;
        }
        .article-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: var(--muted-text);
        }
        .article-meta-item i {
            color: var(--primary);
            font-size: 0.9rem;
        }
        .article-meta-item .badge {
            margin-left: 0.2rem;
        }
        .article-header-card h1 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--dark-blue);
            line-height: 1.35;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .article-excerpt {
            font-size: 1rem;
            color: var(--body-text);
            line-height: 1.8;
            max-width: 800px;
            margin-bottom: 1.5rem;
        }
        .article-cover-wrap {
            border-radius: var(--radius);
            overflow: hidden;
            margin-top: 1rem;
            box-shadow: var(--shadow-sm);
        }
        .article-cover-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius);
        }
        /* Article Content Section */
        .article-content-section {
            padding-top: 2.5rem;
            padding-bottom: 3rem;
        }
        .article-body-card {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 2.5rem 3rem;
        }
        .article-content {
            font-size: 1rem;
            line-height: 1.8;
            color: var(--body-text);
            word-break: break-word;
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark-blue);
            margin-top: 2rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--primary-light);
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--dark-blue);
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
        }
        .article-content p {
            margin-bottom: 1rem;
            line-height: 1.8;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 1rem;
            padding-left: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.4rem;
        }
        .article-content blockquote {
            border-left: 3px solid var(--primary);
            background-color: var(--primary-light);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--dark-blue);
            font-style: normal;
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 1.5rem 0;
            max-width: 100%;
        }
        .article-content a {
            color: var(--primary);
            font-weight: 500;
        }
        .article-content a:hover {
            text-decoration: underline;
        }
        /* Tags & Share */
        .article-share-section {
            padding-top: 1.5rem;
            padding-bottom: 2rem;
        }
        .share-card {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 1.5rem 2rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }
        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            align-items: center;
        }
        .tag-group .badge {
            font-size: 0.8rem;
            padding: 0.3rem 0.7rem;
        }
        .share-buttons {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
            flex-shrink: 0;
        }
        .share-btn:hover {
            background-color: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
        }
        .share-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--muted-text);
            margin-right: 0.25rem;
        }
        /* Related Articles */
        .article-related-section {
            padding-top: 2rem;
            padding-bottom: 3rem;
        }
        .related-card {
            display: block;
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 1.25rem;
            transition: all var(--transition);
            height: 100%;
            text-decoration: none;
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #D5DEEB;
            text-decoration: none;
        }
        .related-card .related-thumb {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 0.75rem;
            height: 140px;
        }
        .related-card .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .related-card h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--dark-blue);
            margin-bottom: 0.4rem;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card p {
            font-size: 0.82rem;
            color: var(--muted-text);
            line-height: 1.5;
            margin-bottom: 0.5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .related-time {
            font-size: 0.75rem;
            color: var(--muted-text);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        /* Return & Copyright */
        .article-return-section {
            padding-top: 1.5rem;
            padding-bottom: 2rem;
        }
        .return-card {
            background: var(--primary-light);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 1.5rem 2rem;
            text-align: center;
        }
        .return-card p {
            margin-bottom: 0.75rem;
            color: var(--body-text);
        }
        .copyright-card {
            background: #FFFFFF;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-soft);
            padding: 1rem 1.5rem;
            font-size: 0.8rem;
            color: var(--muted-text);
            margin-top: 1rem;
            text-align: center;
        }
        /* Footer */
        .site-footer {
            background-color: var(--dark-blue);
            color: #B8C0CF;
            padding: 3rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-brand h4 {
            color: #FFFFFF;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .site-footer h5 {
            color: #FFFFFF;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 0.5rem;
        }
        .site-footer ul li a {
            color: #B8C0CF;
            font-size: 0.85rem;
            transition: color var(--transition);
        }
        .site-footer ul li a:hover {
            color: #FFFFFF;
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 1.25rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 0.75rem;
            font-size: 0.78rem;
            color: #8A93A3;
        }
        /* Mobile */
        @media (max-width: 991px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 768px) {
            .brand-row {
                min-height: 56px;
                padding: 0.5rem 0;
            }
            .brand-logo {
                font-size: 0.95rem;
            }
            .brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
                border-radius: 6px;
            }
            .brand-actions a {
                font-size: 0.75rem;
            }
            .navbar-toggler {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                width: 36px;
                height: 36px;
            }
            .channel-nav {
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 0.5rem 0;
                background: #FFFFFF;
                border-radius: var(--radius-sm);
                box-shadow: var(--shadow-md);
                margin-bottom: 0.5rem;
            }
            .channel-nav.show {
                display: flex;
            }
            .channel-nav a {
                display: block;
                text-align: left;
                padding: 0.6rem 1rem;
                border-radius: 0;
                font-size: 0.9rem;
            }
            .section {
                padding: 2.5rem 0;
            }
            .article-header-card {
                padding: 1.5rem;
            }
            .article-header-card h1 {
                font-size: 1.5rem;
                line-height: 1.4;
            }
            .article-body-card {
                padding: 1.5rem;
            }
            .article-content {
                font-size: 0.95rem;
                line-height: 1.75;
            }
            .article-content h2 {
                font-size: 1.3rem;
            }
            .article-content h3 {
                font-size: 1.1rem;
            }
            .share-card {
                padding: 1rem 1.25rem;
                flex-direction: column;
                align-items: flex-start;
                gap: 0.75rem;
            }
            .breadcrumb .current {
                max-width: 180px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .article-header-card {
                padding: 1.25rem;
            }
            .article-header-card h1 {
                font-size: 1.3rem;
            }
            .article-body-card {
                padding: 1.25rem;
            }
            .article-meta-row {
                gap: 0.5rem;
                flex-wrap: wrap;
            }
            .article-meta-item {
                font-size: 0.75rem;
            }
            .related-card .related-thumb {
                height: 120px;
            }
            .return-card {
                padding: 1.25rem 1rem;
            }
        }

/* 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}