/* roulang page: index */
:root {
            --color-bg-base: #F5F1EA;
            --color-bg-dark: #1E1430;
            --color-bg-darker: #150E26;
            --color-surface: #FFFFFF;
            --color-surface-dark: #2A1E42;
            --color-primary: #3A2560;
            --color-primary-hover: #4D3378;
            --color-accent: #D4A853;
            --color-accent-hover: #E0B96A;
            --color-secondary: #C2456E;
            --color-text-main: #241B38;
            --color-text-muted: #6E6480;
            --color-text-on-dark: #F2EDE4;
            --color-text-on-dark-muted: #A89DB8;
            --color-border: #E2DCD2;
            --color-border-dark: #3A2C58;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --radius-img: 8px;
            --shadow-light: 0 2px 12px rgba(30, 20, 48, 0.06), 0 8px 28px rgba(30, 20, 48, 0.05);
            --shadow-light-hover: 0 4px 20px rgba(30, 20, 48, 0.12), 0 12px 36px rgba(30, 20, 48, 0.08);
            --shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.3);
            --shadow-dark-hover: 0 8px 28px rgba(0, 0, 0, 0.45);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-en: "Inter", "Roboto", "SF Pro Display", sans-serif;
            --section-pad-desktop: 88px;
            --section-pad-mobile: 56px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text-main);
            background-color: var(--color-bg-base);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }

        button,
        input {
            font-family: var(--font-cn);
        }

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

        /* Header & Navigation */
        .site-header {
            background: var(--color-bg-dark);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: box-shadow 0.3s ease, background-color 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
            background-color: rgba(30, 20, 48, 0.97);
        }

        .nav-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: var(--color-accent);
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-bg-dark);
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-search {
            flex: 1;
            max-width: 320px;
            min-width: 160px;
        }

        .nav-search input {
            width: 100%;
            padding: 10px 18px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-text-on-dark);
            font-size: 0.9rem;
            outline: none;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .nav-search input::placeholder {
            color: rgba(242, 237, 228, 0.55);
            font-size: 0.85rem;
        }

        .nav-search input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.18);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.9rem;
            line-height: 1.4;
            cursor: pointer;
            border: none;
            transition: all 0.25s ease;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-accent {
            background: var(--color-accent);
            color: var(--color-bg-dark);
        }

        .btn-accent:hover {
            background: var(--color-accent-hover);
            color: var(--color-bg-dark);
            transform: translateY(-1px);
        }

        .btn-accent:active {
            transform: translateY(1px);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(242, 237, 228, 0.5);
            color: var(--color-text-on-dark);
        }

        .btn-outline-light:hover {
            background: rgba(242, 237, 228, 0.08);
            color: var(--color-text-on-dark);
            border-color: var(--color-accent);
        }

        .btn-outline-dark {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }

        .btn-outline-dark:hover {
            background: rgba(58, 37, 96, 0.08);
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

        .btn-large {
            padding: 14px 36px;
            font-size: 1.1rem;
            border-radius: var(--radius-btn);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
        }

        .nav-channels {
            padding: 10px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-channels::-webkit-scrollbar {
            display: none;
        }

        .channel-tabs {
            display: flex;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
            min-width: max-content;
        }

        .channel-tabs li {
            flex-shrink: 0;
        }

        .channel-tabs a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text-on-dark-muted);
            transition: all 0.25s ease;
            white-space: nowrap;
            background: transparent;
        }

        .channel-tabs a:hover {
            color: var(--color-accent);
            background: rgba(212, 168, 83, 0.08);
        }

        .channel-tabs a.active {
            background: var(--color-accent);
            color: var(--color-bg-dark);
            font-weight: 600;
        }

        .channel-tabs a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }

        /* Section Base */
        .section {
            padding: var(--section-pad-desktop) 0;
        }

        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }

        .section-darker {
            background: var(--color-bg-darker);
            color: var(--color-text-on-dark);
        }

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

        .section-white {
            background: var(--color-surface);
        }

        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 14px;
        }

        .tag-rose {
            background: var(--color-secondary);
            color: #fff;
        }

        .tag-gold {
            background: var(--color-accent);
            color: var(--color-bg-dark);
        }

        .tag-purple {
            background: var(--color-primary);
            color: var(--color-accent);
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text-main);
            margin: 0 0 12px;
        }

        .section-dark .section-title {
            color: var(--color-text-on-dark);
        }

        .section-subtitle {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            margin: 0 0 32px;
            max-width: 680px;
            line-height: 1.8;
        }

        .section-dark .section-subtitle {
            color: var(--color-text-on-dark-muted);
        }

        .section-header {
            margin-bottom: 40px;
        }

        /* Hero */
        .hero-section {
            background: var(--color-bg-dark);
            position: relative;
            overflow: hidden;
            padding: 0;
            min-height: 560px;
            max-height: 760px;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(212, 168, 83, 0.08) 0%, transparent 65%),
                radial-gradient(ellipse at 80% 60%, rgba(194, 69, 110, 0.05) 0%, transparent 55%),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.9;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(30, 20, 48, 0.62);
        }

        .hero-section .container {
            position: relative;
            z-index: 2;
            padding-top: 60px;
            padding-bottom: 60px;
            width: 100%;
        }

        .hero-badge {
            display: inline-block;
            background: var(--color-secondary);
            color: #fff;
            padding: 5px 14px;
            border-radius: var(--radius-badge);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: clamp(2rem, 5vw, 3.8rem);
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-text-on-dark);
            margin: 0 0 18px;
            letter-spacing: 0.01em;
        }

        .hero-description {
            font-size: 1.05rem;
            line-height: 1.8;
            color: rgba(242, 237, 228, 0.85);
            max-width: 600px;
            margin: 0 0 28px;
        }

        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            margin-bottom: 32px;
        }

        .hero-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
        }

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

        .hero-metric .metric-number {
            font-family: var(--font-en);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: 0.02em;
        }

        .hero-metric .metric-label {
            font-size: 0.8rem;
            color: rgba(242, 237, 228, 0.6);
        }

        /* Image Placeholders */
        .img-placeholder {
            background: #E8E2D8;
            border-radius: var(--radius-img);
            overflow: hidden;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 160px;
        }

        .img-placeholder::before {
            content: 'COVER';
            color: rgba(36, 27, 56, 0.3);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.1em;
        }

        .img-placeholder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        .img-placeholder img+.img-label {
            display: none;
        }

        .img-ratio-16-10 {
            aspect-ratio: 16 / 10;
        }

        .img-ratio-1-1 {
            aspect-ratio: 1 / 1;
        }

        .img-ratio-16-9 {
            aspect-ratio: 16 / 9;
        }

        .img-ratio-4-3 {
            aspect-ratio: 4 / 3;
        }

        .section-dark .img-placeholder {
            border: 1px solid rgba(255, 255, 255, 0.08);
            background: #2A1E42;
        }

        .section-dark .img-placeholder::before {
            color: rgba(242, 237, 228, 0.25);
        }

        /* Vertical Cards (竖屏种草) */
        .vertical-cards-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 24px;
        }

        .vertical-cards-row-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .vertical-card {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-light);
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid var(--color-border);
            display: flex;
            flex-direction: column;
        }

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

        .vertical-card .card-media {
            height: 180px;
            overflow: hidden;
            border-radius: var(--radius-img) var(--radius-img) 0 0;
            position: relative;
        }

        .vertical-card .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .vertical-card:hover .card-media img {
            transform: scale(1.03);
        }

        .vertical-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .vertical-card .card-icon-tag {
            display: inline-block;
            background: rgba(212, 168, 83, 0.12);
            color: var(--color-primary);
            padding: 3px 12px;
            border-radius: var(--radius-badge);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .vertical-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--color-text-main);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .vertical-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin: 0 0 14px;
            line-height: 1.7;
            flex: 1;
        }

        .card-link {
            font-size: 0.85rem;
            color: var(--color-accent-hover);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s ease;
        }

        .card-link .arrow {
            transition: transform 0.2s ease;
        }

        .card-link:hover .arrow {
            transform: translateX(4px);
        }

        .vertical-card.wide {
            flex-direction: row;
        }

        .vertical-card.wide .card-media {
            width: 40%;
            height: auto;
            min-height: 180px;
            border-radius: var(--radius-img) 0 0 var(--radius-img);
            flex-shrink: 0;
        }

        .vertical-card.wide .card-body {
            justify-content: center;
        }

        /* Hot List (爆款清单) */
        .hot-list {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-light);
            border: 1px solid var(--color-border);
            overflow: hidden;
        }

        .hot-list-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 24px;
            border-bottom: 1px solid var(--color-border);
            transition: background 0.25s ease;
        }

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

        .hot-list-item:hover {
            background: var(--color-bg-base);
        }

        .hot-rank {
            font-family: var(--font-en);
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-accent);
            min-width: 48px;
            text-align: center;
            letter-spacing: 0.02em;
        }

        .hot-rank.top1 {
            color: var(--color-secondary);
        }

        .hot-info {
            flex: 1;
        }

        .hot-info h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin: 0 0 4px;
            color: var(--color-text-main);
        }

        .hot-info p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        .hot-meta {
            text-align: right;
            flex-shrink: 0;
        }

        .hot-meta .hot-score {
            font-family: var(--font-en);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
        }

        .hot-meta .hot-trend {
            font-size: 0.75rem;
            color: var(--color-secondary);
            font-weight: 600;
        }

        /* Data Metrics */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .metric-card {
            background: var(--color-surface-dark);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            border: 1px solid var(--color-border-dark);
            box-shadow: var(--shadow-dark);
            text-align: center;
            transition: all 0.3s ease;
        }

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

        .metric-card .metric-value {
            font-family: var(--font-en);
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: 0.02em;
            line-height: 1.2;
        }

        .metric-card .metric-unit {
            font-size: 0.85rem;
            color: var(--color-text-on-dark-muted);
            margin-top: 4px;
        }

        .metric-card .metric-desc {
            font-size: 0.85rem;
            color: var(--color-text-on-dark);
            margin-top: 10px;
            line-height: 1.6;
        }

        /* Deep Content */
        .deep-content {
            max-width: 820px;
        }

        .deep-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-main);
            margin: 0 0 20px;
            line-height: 1.35;
        }

        .section-dark .deep-content h2 {
            color: var(--color-text-on-dark);
        }

        .deep-content h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--color-primary);
            margin: 24px 0 12px;
            line-height: 1.4;
        }

        .section-dark .deep-content h3 {
            color: var(--color-accent);
        }

        .deep-content p {
            font-size: 0.95rem;
            line-height: 1.9;
            color: var(--color-text-main);
            margin: 0 0 16px;
        }

        .section-dark .deep-content p {
            color: var(--color-text-on-dark);
        }

        .deep-content .inline-img {
            margin: 24px 0;
            border-radius: 12px;
            overflow: hidden;
        }

        /* Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .review-card {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-light);
            border: 1px solid var(--color-border);
            padding: 24px;
            transition: all 0.3s ease;
        }

        .review-card:hover {
            box-shadow: var(--shadow-light-hover);
        }

        .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }

        .review-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .review-name {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text-main);
        }

        .review-date {
            font-size: 0.75rem;
            color: var(--color-text-muted);
        }

        .review-stars {
            color: var(--color-accent);
            font-size: 0.8rem;
            letter-spacing: 2px;
        }

        .review-text {
            font-size: 0.9rem;
            line-height: 1.75;
            color: var(--color-text-muted);
            margin: 0;
        }

        /* News */
        .news-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border);
            transition: background 0.25s ease;
        }

        .news-item:first-child {
            padding-top: 0;
        }

        .news-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .news-item:hover {
            background: rgba(245, 241, 234, 0.7);
        }

        .news-date {
            font-family: var(--font-en);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent-hover);
            white-space: nowrap;
            min-width: 80px;
            text-align: left;
        }

        .news-content {
            flex: 1;
        }

        .news-content h4 {
            font-size: 1rem;
            font-weight: 600;
            margin: 0 0 6px;
            color: var(--color-text-main);
            line-height: 1.4;
        }

        .news-content p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.65;
        }

        .news-btn-link {
            align-self: center;
            flex-shrink: 0;
        }

        .btn-text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent-hover);
            transition: color 0.2s ease;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-text-link .arrow {
            transition: transform 0.2s ease;
        }

        .btn-text-link:hover .arrow {
            transform: translateX(4px);
        }

        /* Brand Intro */
        .brand-intro {
            background: var(--color-bg-dark);
            border-radius: var(--radius-card);
            padding: 40px;
            color: var(--color-text-on-dark);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-dark);
        }

        .brand-intro::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(212, 168, 83, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }

        .brand-intro .container-inner {
            position: relative;
            z-index: 1;
        }

        .brand-intro h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 16px;
        }

        .brand-intro p {
            font-size: 0.95rem;
            line-height: 1.9;
            color: rgba(242, 237, 228, 0.85);
            margin: 0;
            max-width: 760px;
        }

        /* FAQ */
        .faq-list .accordion-item {
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            transition: border-color 0.25s ease;
        }

        .faq-list .accordion-item:hover {
            border-color: var(--color-accent);
        }

        .faq-list .accordion-title {
            background: var(--color-surface);
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text-main);
            padding: 16px 20px;
            border: none;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            width: 100%;
            text-align: left;
            transition: background 0.2s ease;
        }

        .faq-list .accordion-title:hover {
            background: var(--color-bg-base);
        }

        .faq-list .accordion-title:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: -2px;
        }

        .faq-list .accordion-icon {
            font-size: 1.2rem;
            color: var(--color-accent);
            font-weight: 700;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-list .accordion-item.is-active .accordion-icon {
            transform: rotate(45deg);
        }

        .faq-list .accordion-content {
            display: none;
            padding: 0 20px 20px;
            font-size: 0.9rem;
            line-height: 1.75;
            color: var(--color-text-muted);
        }

        .faq-list .accordion-item.is-active .accordion-content {
            display: block;
        }

        /* CTA */
        .cta-section {
            background: var(--color-bg-dark);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 40%, rgba(212, 168, 83, 0.1) 0%, transparent 65%);
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 16px;
            line-height: 1.3;
        }

        .cta-section .cta-sub {
            font-size: 1rem;
            color: rgba(242, 237, 228, 0.75);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-hint {
            display: block;
            margin-top: 16px;
            font-size: 0.8rem;
            color: rgba(242, 237, 228, 0.5);
        }

        /* Footer */
        .site-footer {
            background: var(--color-bg-darker);
            color: rgba(242, 237, 228, 0.6);
            padding: 48px 0 28px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 10px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(242, 237, 228, 0.55);
            margin: 0;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-on-dark);
            margin: 0 0 12px;
            letter-spacing: 0.03em;
        }

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

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

        .footer-col ul a {
            font-size: 0.8rem;
            color: rgba(242, 237, 228, 0.55);
            transition: color 0.2s ease;
        }

        .footer-col ul a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(242, 237, 228, 0.4);
        }

        .footer-bottom .footer-links {
            display: flex;
            gap: 6px;
            align-items: center;
        }

        .footer-bottom a {
            color: rgba(242, 237, 228, 0.4);
            font-size: 0.8rem;
            transition: color 0.2s ease;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .vertical-cards-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .vertical-cards-row-2 {
                grid-template-columns: 1fr;
            }
            .vertical-card.wide {
                flex-direction: column;
            }
            .vertical-card.wide .card-media {
                width: 100%;
                height: 180px;
                border-radius: var(--radius-img) var(--radius-img) 0 0;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad-desktop: 56px;
            }
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .nav-top {
                flex-wrap: wrap;
                gap: 10px;
            }
            .nav-search {
                order: 3;
                max-width: 100%;
                flex-basis: 100%;
            }
            .nav-cta .btn-sm {
                padding: 8px 12px;
                font-size: 0.8rem;
            }
            .hero-section {
                min-height: 420px;
                max-height: none;
            }
            .hero-title {
                font-size: clamp(1.6rem, 6vw, 2.4rem);
            }
            .hero-description {
                font-size: 0.95rem;
            }
            .hero-metrics {
                gap: 16px;
            }
            .vertical-cards-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .vertical-cards-row-2 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .metric-card {
                padding: 20px 16px;
            }
            .metric-card .metric-value {
                font-size: 1.6rem;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-item {
                flex-direction: column;
                gap: 8px;
                padding: 14px 0;
            }
            .news-date {
                font-size: 0.75rem;
            }
            .news-btn-link {
                align-self: flex-start;
            }
            .brand-intro {
                padding: 28px 20px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .hot-list-item {
                padding: 14px 16px;
                gap: 12px;
            }
            .hot-rank {
                font-size: 1.4rem;
                min-width: 36px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .brand-logo {
                font-size: 1.05rem;
            }
            .brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .nav-search input {
                font-size: 0.8rem;
                padding: 8px 14px;
            }
            .channel-tabs a {
                padding: 6px 14px;
                font-size: 0.75rem;
            }
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-description {
                font-size: 0.85rem;
            }
            .hero-cta-row {
                gap: 10px;
            }
            .btn {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .btn-large {
                padding: 12px 24px;
                font-size: 1rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .hot-rank {
                font-size: 1.2rem;
                min-width: 30px;
            }
            .section-title {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 480px) {
            .hero-metrics {
                flex-direction: column;
                gap: 8px;
            }
            .vertical-card .card-media {
                height: 150px;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
        }

/* roulang page: category2 */
:root {
            --color-bg-base: #F5F1EA;
            --color-bg-dark: #1E1430;
            --color-bg-darker: #150E26;
            --color-surface: #FFFFFF;
            --color-surface-dark: #2A1E42;
            --color-primary: #3A2560;
            --color-primary-hover: #4D3378;
            --color-accent: #D4A853;
            --color-accent-hover: #E0B96A;
            --color-secondary: #C2456E;
            --color-text-main: #241B38;
            --color-text-muted: #6E6480;
            --color-text-on-dark: #F2EDE4;
            --color-text-on-dark-muted: #A89DB8;
            --color-border: #E2DCD2;
            --color-border-dark: #3A2C58;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --radius-img: 8px;
            --shadow-light: 0 2px 12px rgba(30, 20, 48, 0.06), 0 8px 28px rgba(30, 20, 48, 0.05);
            --shadow-light-hover: 0 4px 20px rgba(30, 20, 48, 0.12), 0 12px 36px rgba(30, 20, 48, 0.08);
            --shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.3);
            --shadow-dark-hover: 0 8px 28px rgba(0, 0, 0, 0.45);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-en: "Inter", "Roboto", "SF Pro Display", sans-serif;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 48px;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text-main);
            background-color: var(--color-bg-base);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--color-accent-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }
        button,
        input {
            font-family: var(--font-cn);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Navigation */
        .site-header {
            background: var(--color-bg-dark);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: box-shadow 0.3s ease, background-color 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
            background-color: rgba(30, 20, 48, 0.97);
        }
        .nav-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            white-space: nowrap;
        }
        .brand-logo:hover {
            color: var(--color-accent);
        }
        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-bg-dark);
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-search {
            flex: 1;
            max-width: 320px;
            min-width: 160px;
        }
        .nav-search input {
            width: 100%;
            padding: 10px 18px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-text-on-dark);
            font-size: 0.9rem;
            outline: none;
            transition: border-color 0.3s ease, background 0.3s ease;
        }
        .nav-search input::placeholder {
            color: rgba(242, 237, 228, 0.55);
            font-size: 0.85rem;
        }
        .nav-search input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.18);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.9rem;
            line-height: 1.4;
            cursor: pointer;
            border: none;
            transition: all 0.25s ease;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-accent {
            background: var(--color-accent);
            color: var(--color-bg-dark);
        }
        .btn-accent:hover {
            background: var(--color-accent-hover);
            color: var(--color-bg-dark);
            transform: translateY(-1px);
        }
        .btn-accent:active {
            transform: translateY(1px);
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(242, 237, 228, 0.45);
            color: var(--color-text-on-dark);
        }
        .btn-outline-light:hover {
            background: rgba(242, 237, 228, 0.08);
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.82rem;
        }
        .nav-channels {
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--color-accent) rgba(255,255,255,0.05);
        }
        .nav-channels::-webkit-scrollbar {
            height: 3px;
        }
        .nav-channels::-webkit-scrollbar-track {
            background: rgba(255,255,255,0.05);
        }
        .nav-channels::-webkit-scrollbar-thumb {
            background: var(--color-accent);
            border-radius: 999px;
        }
        .channel-tabs {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            gap: 8px;
            white-space: nowrap;
        }
        .channel-tabs li {
            flex-shrink: 0;
        }
        .channel-tabs a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--color-text-on-dark-muted);
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .channel-tabs a:hover {
            color: var(--color-accent);
            background: rgba(212, 168, 83, 0.08);
        }
        .channel-tabs a.active {
            background: var(--color-accent);
            color: var(--color-bg-dark);
            font-weight: 600;
        }
        /* Page Header */
        .page-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            padding: 40px 0 36px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
        }
        .breadcrumb a:hover {
            color: var(--color-accent-hover);
        }
        .breadcrumb .sep {
            color: var(--color-border);
        }
        .page-header h1 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 700;
            color: var(--color-text-main);
            margin: 0 0 12px;
            line-height: 1.3;
        }
        .page-header .lead {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 820px;
            line-height: 1.85;
            margin: 0;
        }
        /* Content Library Grid */
        .content-library {
            padding: var(--section-pad-desktop) 0;
            background: var(--color-bg-base);
        }
        .library-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-bottom: 56px;
        }
        .library-card {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-light);
            overflow: hidden;
            transition: box-shadow 0.3s ease, transform 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .library-card:hover {
            box-shadow: var(--shadow-light-hover);
            transform: translateY(-4px);
        }
        .library-card .card-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #E8E2D8;
            border-radius: var(--radius-img) var(--radius-img) 0 0;
        }
        .library-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .library-card:hover .card-cover img {
            transform: scale(1.04);
        }
        .library-card .card-body {
            padding: 20px 20px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .library-card .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text-main);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .library-card .card-summary {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0 0 14px;
            flex: 1;
        }
        .library-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
            font-size: 0.78rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .library-card .meta-left {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .badge-cat {
            background: rgba(58, 37, 96, 0.08);
            color: var(--color-primary);
            padding: 3px 10px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.72rem;
        }
        .badge-trend {
            background: var(--color-secondary);
            color: #fff;
            padding: 3px 10px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.72rem;
        }
        /* Deep text block */
        .deep-text-block {
            background: var(--color-bg-dark);
            border-radius: 16px;
            padding: 48px 40px;
            color: var(--color-text-on-dark);
            margin-bottom: 56px;
        }
        .deep-text-block h2 {
            color: var(--color-text-on-dark);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .deep-text-block p {
            color: var(--color-text-on-dark-muted);
            line-height: 1.9;
            margin-bottom: 1.2em;
        }
        .deep-text-block p:last-child {
            margin-bottom: 0;
        }
        .deep-text-block strong {
            color: var(--color-accent);
            font-weight: 600;
        }
        /* CTA mini block */
        .cta-mini {
            background: linear-gradient(135deg, rgba(58,37,96,0.05) 0%, rgba(212,168,83,0.08) 100%);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 56px;
        }
        .cta-mini h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text-main);
            margin: 0 0 6px;
        }
        .cta-mini p {
            margin: 0;
            color: var(--color-text-muted);
            font-size: 0.9rem;
        }
        .cta-mini .btn {
            flex-shrink: 0;
        }
        /* Footer */
        .site-footer-seo {
            background: var(--color-bg-darker);
            color: var(--color-text-on-dark-muted);
            padding: 56px 0 32px;
            margin-top: 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-col h4 {
            color: var(--color-text-on-dark);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: var(--color-text-on-dark-muted);
            font-size: 0.9rem;
            margin-bottom: 8px;
            transition: color 0.2s ease;
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 24px;
            font-size: 0.8rem;
            color: var(--color-text-on-dark-muted);
        }
        .footer-bottom a {
            color: var(--color-text-on-dark-muted);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .footer-sep {
            margin: 0 8px;
            opacity: 0.5;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .library-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-top {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .page-header {
                padding: 28px 0 24px;
            }
            .page-header h1 {
                font-size: 1.6rem;
            }
            .deep-text-block {
                padding: 32px 24px;
            }
            .cta-mini {
                padding: 24px;
            }
        }
        @media (max-width: 640px) {
            .nav-top {
                flex-wrap: wrap;
            }
            .nav-search {
                order: 3;
                max-width: 100%;
                min-width: 100%;
                flex-basis: 100%;
            }
            .nav-cta .btn span {
                display: none;
            }
            .library-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .deep-text-block {
                padding: 24px 18px;
            }
            .cta-mini {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category1 */
:root {
        --color-bg-base: #F5F1EA;
        --color-bg-dark: #1E1430;
        --color-bg-darker: #150E26;
        --color-surface: #FFFFFF;
        --color-surface-dark: #2A1E42;
        --color-primary: #3A2560;
        --color-primary-hover: #4D3378;
        --color-accent: #D4A853;
        --color-accent-hover: #E0B96A;
        --color-secondary: #C2456E;
        --color-text-main: #241B38;
        --color-text-muted: #6E6480;
        --color-text-on-dark: #F2EDE4;
        --color-text-on-dark-muted: #A89DB8;
        --color-border: #E2DCD2;
        --color-border-dark: #3A2C58;
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-badge: 999px;
        --radius-img: 8px;
        --shadow-light: 0 2px 12px rgba(30, 20, 48, 0.06), 0 8px 28px rgba(30, 20, 48, 0.05);
        --shadow-light-hover: 0 4px 20px rgba(30, 20, 48, 0.12), 0 12px 36px rgba(30, 20, 48, 0.08);
        --shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.3);
        --shadow-dark-hover: 0 8px 28px rgba(0, 0, 0, 0.45);
        --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        --font-en: "Inter", "Roboto", "SF Pro Display", sans-serif;
        --section-pad-desktop: 56px;
        --section-pad-mobile: 44px;
    }

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

    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }

    body {
        font-family: var(--font-cn);
        font-size: 16px;
        line-height: 1.85;
        color: var(--color-text-main);
        background-color: var(--color-bg-base);
        margin: 0;
        padding: 0;
        overflow-x: hidden;
    }

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

    a {
        color: var(--color-primary);
        text-decoration: none;
        transition: color 0.2s ease;
    }

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

    a:focus-visible {
        outline: 2px solid var(--color-secondary);
        outline-offset: 2px;
    }

    button,
    input {
        font-family: var(--font-cn);
    }

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

    /* Header & Navigation */
    .site-header {
        background: var(--color-bg-dark);
        position: sticky;
        top: 0;
        z-index: 100;
        transition: box-shadow 0.3s ease, background-color 0.3s ease;
    }

    .site-header.scrolled {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
        background-color: rgba(30, 20, 48, 0.97);
    }

    .nav-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 0;
        gap: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--color-text-on-dark);
        white-space: nowrap;
    }

    .brand-logo:hover {
        color: var(--color-accent);
    }

    .brand-logo .logo-icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
        background: var(--color-accent);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--color-bg-dark);
        font-size: 1.1rem;
        font-weight: 800;
        flex-shrink: 0;
    }

    .nav-search {
        flex: 1;
        max-width: 320px;
        min-width: 160px;
    }

    .nav-search input {
        width: 100%;
        padding: 10px 18px;
        border-radius: 999px;
        border: 1px solid rgba(255, 255, 255, 0.15);
        background: rgba(255, 255, 255, 0.12);
        color: var(--color-text-on-dark);
        font-size: 0.9rem;
        outline: none;
        transition: border-color 0.3s ease, background 0.3s ease;
    }

    .nav-search input::placeholder {
        color: rgba(242, 237, 228, 0.55);
        font-size: 0.85rem;
    }

    .nav-search input:focus {
        border-color: var(--color-accent);
        background: rgba(255, 255, 255, 0.18);
    }

    .nav-cta {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 22px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 0.9rem;
        line-height: 1.4;
        cursor: pointer;
        border: none;
        transition: all 0.25s ease;
        text-decoration: none;
        white-space: nowrap;
    }

    .btn-accent {
        background: var(--color-accent);
        color: var(--color-bg-dark);
    }

    .btn-accent:hover {
        background: var(--color-accent-hover);
        color: var(--color-bg-dark);
        transform: translateY(-1px);
    }

    .btn-accent:active {
        transform: translateY(1px);
    }

    .btn-outline-light {
        background: transparent;
        border: 1px solid rgba(242, 237, 228, 0.5);
        color: var(--color-text-on-dark);
    }

    .btn-outline-light:hover {
        background: rgba(242, 237, 228, 0.08);
        color: var(--color-accent-hover);
        border-color: var(--color-accent-hover);
    }

    .btn-outline-dark {
        background: transparent;
        border: 1px solid var(--color-primary);
        color: var(--color-primary);
    }

    .btn-outline-dark:hover {
        background: rgba(58, 37, 96, 0.08);
        color: var(--color-primary-hover);
        border-color: var(--color-primary-hover);
    }

    .btn-sm {
        padding: 8px 16px;
        font-size: 0.8rem;
    }

    .btn-lg {
        padding: 14px 36px;
        font-size: 1.1rem;
    }

    .btn:focus-visible {
        outline: 2px solid var(--color-secondary);
        outline-offset: 2px;
    }

    .nav-channels {
        padding: 0;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .nav-channels::-webkit-scrollbar {
        display: none;
    }

    .channel-tabs {
        list-style: none;
        margin: 0;
        padding: 10px 0;
        display: flex;
        gap: 8px;
        flex-wrap: nowrap;
        min-width: max-content;
    }

    .channel-tabs li {
        flex-shrink: 0;
    }

    .channel-tabs a {
        display: inline-block;
        padding: 8px 18px;
        border-radius: var(--radius-badge);
        font-size: 0.85rem;
        font-weight: 500;
        color: var(--color-text-on-dark-muted);
        transition: all 0.25s ease;
        white-space: nowrap;
        letter-spacing: 0.01em;
    }

    .channel-tabs a:hover {
        color: var(--color-accent);
        background: rgba(212, 168, 83, 0.08);
    }

    .channel-tabs a.active {
        background: var(--color-accent);
        color: var(--color-bg-dark);
        font-weight: 600;
        box-shadow: 0 2px 8px rgba(212, 168, 83, 0.3);
    }

    /* Hero - narrow banner for category1 */
    .hero-narrow {
        position: relative;
        min-height: 260px;
        display: flex;
        align-items: center;
        padding: 48px 0;
        background: var(--color-bg-dark);
        background-image: radial-gradient(ellipse at 70% 30%, rgba(212, 168, 83, 0.08) 0%, transparent 55%),
            radial-gradient(ellipse at 15% 80%, rgba(194, 69, 110, 0.06) 0%, transparent 45%);
        overflow: hidden;
        border-radius: 0 0 24px 24px;
    }

    .hero-narrow::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-1.webp');
        background-size: cover;
        background-position: center;
        opacity: 0.25;
        z-index: 0;
    }

    .hero-narrow::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(30, 20, 48, 0.55) 0%, rgba(30, 20, 48, 0.75) 100%);
        z-index: 1;
    }

    .hero-narrow .hero-content {
        position: relative;
        z-index: 2;
        max-width: 780px;
    }

    .hero-badge {
        display: inline-flex;
        align-items: center;
        padding: 6px 16px;
        border-radius: var(--radius-badge);
        background: var(--color-secondary);
        color: #fff;
        font-size: 0.75rem;
        font-weight: 600;
        letter-spacing: 0.05em;
        margin-bottom: 16px;
    }

    .hero-narrow h1 {
        font-size: clamp(1.8rem, 3.5vw, 2.6rem);
        font-weight: 700;
        line-height: 1.25;
        color: var(--color-text-on-dark);
        margin: 0 0 12px 0;
    }

    .hero-narrow .hero-sub {
        font-size: 1.05rem;
        color: var(--color-text-on-dark-muted);
        line-height: 1.7;
        max-width: 620px;
        margin: 0;
    }

    /* Section base */
    .section {
        padding: var(--section-pad-desktop) 0;
    }

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

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

    .section-title {
        font-size: clamp(1.4rem, 2vw, 1.8rem);
        font-weight: 700;
        color: var(--color-text-main);
        margin: 0 0 12px 0;
        letter-spacing: 0.01em;
    }

    .section-desc {
        color: var(--color-text-muted);
        font-size: 0.95rem;
        line-height: 1.8;
        max-width: 720px;
        margin-bottom: 32px;
    }

    /* Main content + sidebar layout */
    .content-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 32px;
        align-items: start;
    }

    .main-col {
        min-width: 0;
    }

    .sidebar-col {
        min-width: 0;
    }

    /* Deep content list */
    .deep-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .deep-item {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-light);
        padding: 24px 24px 22px;
        margin-bottom: 20px;
        transition: box-shadow 0.3s ease, transform 0.3s ease;
    }

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

    .deep-item-meta {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        margin-bottom: 10px;
    }

    .deep-item-date {
        font-family: var(--font-en);
        font-size: 0.8rem;
        font-weight: 600;
        color: var(--color-accent);
        letter-spacing: 0.04em;
    }

    .deep-item-tag {
        display: inline-block;
        padding: 3px 12px;
        border-radius: var(--radius-badge);
        font-size: 0.72rem;
        font-weight: 600;
        background: rgba(58, 37, 96, 0.08);
        color: var(--color-primary);
        transition: background 0.25s ease;
    }

    .deep-item-tag:hover {
        background: rgba(58, 37, 96, 0.15);
        color: var(--color-primary-hover);
    }

    .deep-item h3 {
        font-size: 1.15rem;
        font-weight: 600;
        line-height: 1.45;
        color: var(--color-text-main);
        margin: 0 0 10px 0;
    }

    .deep-item h3 a {
        color: inherit;
        transition: color 0.25s ease;
    }

    .deep-item h3 a:hover {
        color: var(--color-accent-hover);
    }

    .deep-item p {
        font-size: 0.92rem;
        color: var(--color-text-muted);
        line-height: 1.75;
        margin: 0;
    }

    /* Sidebar */
    .sidebar-card {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-light);
        padding: 20px 22px;
        margin-bottom: 24px;
    }

    .sidebar-card h4 {
        font-size: 0.95rem;
        font-weight: 700;
        color: var(--color-text-main);
        margin: 0 0 16px 0;
        padding-bottom: 10px;
        border-bottom: 2px solid var(--color-accent);
        display: inline-block;
    }

    .tag-cloud {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .tag-pill {
        display: inline-block;
        padding: 5px 14px;
        border-radius: var(--radius-badge);
        font-size: 0.75rem;
        font-weight: 500;
        background: var(--color-bg-base);
        color: var(--color-text-muted);
        border: 1px solid var(--color-border);
        transition: all 0.25s ease;
    }

    .tag-pill:hover {
        background: var(--color-primary);
        color: var(--color-text-on-dark);
        border-color: var(--color-primary);
    }

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

    .recent-list li {
        padding: 10px 0;
        border-bottom: 1px solid var(--color-border);
        font-size: 0.85rem;
        line-height: 1.5;
    }

    .recent-list li:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }

    .recent-list a {
        color: var(--color-text-main);
        font-weight: 500;
        transition: color 0.25s ease;
    }

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

    .recent-date {
        display: block;
        font-family: var(--font-en);
        font-size: 0.7rem;
        color: var(--color-text-muted);
        margin-top: 4px;
        letter-spacing: 0.03em;
    }

    /* Editorial section */
    .editorial-block {
        background: var(--color-surface);
        border-left: 4px solid var(--color-accent);
        border-radius: 0 var(--radius-card) var(--radius-card) 0;
        padding: 28px 30px;
        margin-top: 36px;
        box-shadow: var(--shadow-light);
    }

    .editorial-block h2 {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--color-primary);
        margin: 0 0 16px 0;
    }

    .editorial-block p {
        font-size: 0.95rem;
        line-height: 1.85;
        color: var(--color-text-main);
        margin: 0 0 16px 0;
    }

    .editorial-block p:last-child {
        margin-bottom: 0;
    }

    /* CTA Section */
    .cta-section {
        background: var(--color-bg-dark);
        background-image: radial-gradient(ellipse at 50% 35%, rgba(212, 168, 83, 0.1) 0%, transparent 60%);
        padding: 72px 0;
        text-align: center;
        border-radius: 24px 24px 0 0;
    }

    .cta-section h2 {
        font-size: clamp(1.6rem, 2.5vw, 2.2rem);
        font-weight: 700;
        color: var(--color-text-on-dark);
        margin: 0 0 14px 0;
    }

    .cta-section .cta-actions {
        display: flex;
        justify-content: center;
        gap: 16px;
        flex-wrap: wrap;
        margin-top: 28px;
    }

    .cta-section .cta-note {
        margin-top: 18px;
        font-size: 0.8rem;
        color: var(--color-text-on-dark-muted);
    }

    /* Footer */
    .site-footer-seo {
        background: var(--color-bg-darker);
        padding: 0;
        margin-top: 0;
    }

    .footer-top {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 32px;
        padding: 48px 0 40px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-col h4 {
        font-size: 0.9rem;
        font-weight: 700;
        color: var(--color-accent);
        margin: 0 0 16px 0;
        letter-spacing: 0.03em;
    }

    .footer-col a {
        display: block;
        color: var(--color-text-on-dark-muted);
        font-size: 0.85rem;
        padding: 5px 0;
        transition: color 0.25s ease, padding-left 0.25s ease;
    }

    .footer-col a:hover {
        color: var(--color-accent-hover);
        padding-left: 4px;
    }

    .footer-bottom {
        padding: 22px 0 28px;
        text-align: center;
        font-size: 0.8rem;
        color: var(--color-text-on-dark-muted);
        line-height: 2;
    }

    .footer-bottom a {
        color: var(--color-text-on-dark-muted);
        transition: color 0.25s ease;
    }

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

    .footer-sep {
        margin: 0 8px;
        opacity: 0.5;
    }

    /* Responsive */
    @media (max-width: 1024px) {
        .content-layout {
            grid-template-columns: 1fr 280px;
            gap: 24px;
        }
    }

    @media (max-width: 768px) {
        .content-layout {
            grid-template-columns: 1fr;
            gap: 24px;
        }

        .footer-top {
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .nav-top {
            flex-wrap: wrap;
        }

        .nav-search {
            order: 3;
            max-width: 100%;
            width: 100%;
            min-width: 0;
        }

        .hero-narrow {
            min-height: 200px;
            padding: 32px 0;
            border-radius: 0 0 16px 16px;
        }

        .section {
            padding: var(--section-pad-mobile) 0;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }

        .nav-top {
            padding: 10px 0;
            gap: 8px;
        }

        .brand-logo {
            font-size: 1.05rem;
            gap: 6px;
        }

        .brand-logo .logo-icon {
            width: 30px;
            height: 30px;
            font-size: 0.9rem;
            border-radius: 6px;
        }

        .nav-cta .btn {
            padding: 6px 12px;
            font-size: 0.75rem;
        }

        .nav-search input {
            padding: 8px 14px;
            font-size: 0.8rem;
        }

        .channel-tabs a {
            padding: 6px 14px;
            font-size: 0.78rem;
        }

        .hero-narrow {
            min-height: 170px;
            padding: 24px 0;
        }

        .hero-narrow h1 {
            font-size: 1.4rem;
        }

        .hero-narrow .hero-sub {
            font-size: 0.9rem;
        }

        .hero-badge {
            font-size: 0.65rem;
            padding: 4px 12px;
            margin-bottom: 10px;
        }

        .deep-item {
            padding: 16px 16px 14px;
            margin-bottom: 14px;
        }

        .deep-item h3 {
            font-size: 1rem;
        }

        .deep-item p {
            font-size: 0.85rem;
        }

        .deep-item-meta {
            gap: 8px;
        }

        .sidebar-card {
            padding: 16px;
        }

        .editorial-block {
            padding: 20px 18px;
            margin-top: 24px;
        }

        .editorial-block h2 {
            font-size: 1.1rem;
        }

        .editorial-block p {
            font-size: 0.88rem;
        }

        .cta-section {
            padding: 48px 0;
            border-radius: 16px 16px 0 0;
        }

        .cta-section h2 {
            font-size: 1.4rem;
        }

        .footer-top {
            grid-template-columns: 1fr;
            gap: 16px;
            padding: 32px 0 24px;
        }

        .footer-bottom {
            font-size: 0.72rem;
            padding: 16px 0 20px;
        }

        .btn-lg {
            padding: 10px 24px;
            font-size: 0.95rem;
        }

        .section-title {
            font-size: 1.3rem;
        }
    }

    @media (max-width: 480px) {
        .nav-cta .btn span {
            display: none;
        }

        .nav-cta .btn::after {
            content: '内容库';
        }

        .channel-tabs {
            gap: 4px;
        }

        .channel-tabs a {
            padding: 5px 10px;
            font-size: 0.72rem;
        }
    }

/* roulang page: category3 */
:root {
        --color-bg-base: #F5F1EA;
        --color-bg-dark: #1E1430;
        --color-bg-darker: #150E26;
        --color-surface: #FFFFFF;
        --color-surface-dark: #2A1E42;
        --color-primary: #3A2560;
        --color-primary-hover: #4D3378;
        --color-accent: #D4A853;
        --color-accent-hover: #E0B96A;
        --color-secondary: #C2456E;
        --color-text-main: #241B38;
        --color-text-muted: #6E6480;
        --color-text-on-dark: #F2EDE4;
        --color-text-on-dark-muted: #A89DB8;
        --color-border: #E2DCD2;
        --color-border-dark: #3A2C58;
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-badge: 999px;
        --radius-img: 8px;
        --shadow-light: 0 2px 12px rgba(30, 20, 48, 0.06), 0 8px 28px rgba(30, 20, 48, 0.05);
        --shadow-light-hover: 0 4px 20px rgba(30, 20, 48, 0.12), 0 12px 36px rgba(30, 20, 48, 0.08);
        --shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.3);
        --shadow-dark-hover: 0 8px 28px rgba(0, 0, 0, 0.45);
        --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        --font-en: "Inter", "Roboto", "SF Pro Display", sans-serif;
        --section-pad-desktop: 72px;
        --section-pad-mobile: 48px;
    }
    :root {
        --section-pad-desktop: 56px;
    }
    :root {
        --color-bg-base: #F5F1EA;
        --color-bg-dark: #1E1430;
        --color-bg-darker: #150E26;
        --color-surface: #FFFFFF;
        --color-surface-dark: #2A1E42;
        --color-primary: #3A2560;
        --color-primary-hover: #4D3378;
        --color-accent: #D4A853;
        --color-accent-hover: #E0B96A;
        --color-secondary: #C2456E;
        --color-text-main: #241B38;
        --color-text-muted: #6E6480;
        --color-text-on-dark: #F2EDE4;
        --color-text-on-dark-muted: #A89DB8;
        --color-border: #E2DCD2;
        --color-border-dark: #3A2C58;
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-badge: 999px;
        --radius-img: 8px;
        --shadow-light: 0 2px 12px rgba(30, 20, 48, 0.06), 0 8px 28px rgba(30, 20, 48, 0.05);
        --shadow-light-hover: 0 4px 20px rgba(30, 20, 48, 0.12), 0 12px 36px rgba(30, 20, 48, 0.08);
        --shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.3);
        --shadow-dark-hover: 0 8px 28px rgba(0, 0, 0, 0.45);
        --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        --font-en: "Inter", "Roboto", "SF Pro Display", sans-serif;
        --section-pad-desktop: 72px;
        --section-pad-mobile: 48px;
    }
    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }
    body {
        font-family: var(--font-cn);
        font-size: 16px;
        line-height: 1.85;
        color: var(--color-text-main);
        background-color: var(--color-bg-base);
        margin: 0;
        padding: 0;
        overflow-x: hidden;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    a {
        color: var(--color-primary);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    a:hover {
        color: var(--color-accent-hover);
    }
    a:focus-visible {
        outline: 2px solid var(--color-secondary);
        outline-offset: 2px;
    }
    button,
    input {
        font-family: var(--font-cn);
    }
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }
    /* Header & Navigation */
    .site-header {
        background: var(--color-bg-dark);
        position: sticky;
        top: 0;
        z-index: 100;
        transition: box-shadow 0.3s ease, background-color 0.3s ease;
    }
    .site-header.scrolled {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
        background-color: rgba(30, 20, 48, 0.97);
    }
    .nav-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 0;
        gap: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--color-text-on-dark);
        white-space: nowrap;
    }
    .brand-logo:hover {
        color: var(--color-accent);
    }
    .brand-logo .logo-icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
        background: var(--color-accent);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--color-bg-dark);
        font-size: 1.1rem;
        font-weight: 800;
        flex-shrink: 0;
    }
    .nav-search {
        flex: 1;
        max-width: 320px;
        min-width: 160px;
    }
    .nav-search input {
        width: 100%;
        padding: 10px 18px;
        border-radius: 999px;
        border: 1px solid rgba(255, 255, 255, 0.15);
        background: rgba(255, 255, 255, 0.12);
        color: var(--color-text-on-dark);
        font-size: 0.9rem;
        outline: none;
        transition: border-color 0.3s ease, background 0.3s ease;
    }
    .nav-search input::placeholder {
        color: rgba(242, 237, 228, 0.55);
        font-size: 0.85rem;
    }
    .nav-search input:focus {
        border-color: var(--color-accent);
        background: rgba(255, 255, 255, 0.18);
    }
    .nav-cta {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 22px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 0.9rem;
        line-height: 1.4;
        cursor: pointer;
        border: none;
        transition: all 0.25s ease;
        text-decoration: none;
        white-space: nowrap;
    }
    .btn-accent {
        background: var(--color-accent);
        color: var(--color-bg-dark);
    }
    .btn-accent:hover {
        background: var(--color-accent-hover);
        color: var(--color-bg-dark);
        transform: translateY(-1px);
    }
    .btn-accent:active {
        transform: translateY(1px);
    }
    .btn-outline-light {
        background: transparent;
        border: 1px solid rgba(242, 237, 228, 0.6);
        color: var(--color-text-on-dark);
    }
    .btn-outline-light:hover {
        background: rgba(255, 255, 255, 0.08);
        color: var(--color-accent);
        border-color: var(--color-accent);
    }
    .btn-outline-primary {
        background: transparent;
        border: 1px solid var(--color-primary);
        color: var(--color-primary);
    }
    .btn-outline-primary:hover {
        background: rgba(58, 37, 96, 0.08);
        color: var(--color-primary-hover);
        border-color: var(--color-primary-hover);
    }
    .btn-sm {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
    .btn-lg {
        padding: 14px 36px;
        font-size: 1.1rem;
    }
    .btn-accent:focus-visible,
    .btn-outline-light:focus-visible,
    .btn-outline-primary:focus-visible {
        outline: 2px solid var(--color-secondary);
        outline-offset: 2px;
    }
    .nav-channels {
        padding: 10px 0;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .nav-channels::-webkit-scrollbar {
        display: none;
    }
    .channel-tabs {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-wrap: nowrap;
        gap: 8px;
        white-space: nowrap;
    }
    .channel-tabs li {
        display: inline-flex;
    }
    .channel-tabs a {
        display: inline-flex;
        align-items: center;
        padding: 8px 18px;
        border-radius: var(--radius-badge);
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--color-text-on-dark-muted);
        transition: color 0.2s ease, background 0.2s ease;
    }
    .channel-tabs a:hover {
        color: var(--color-accent);
        background: rgba(255, 255, 255, 0.06);
    }
    .channel-tabs a.active {
        background: var(--color-accent);
        color: var(--color-bg-dark);
        font-weight: 600;
    }
    /* Page Hero */
    .page-hero {
        position: relative;
        background-color: var(--color-bg-dark);
        background-image: url("/assets/images/backpic/back-1.webp");
        background-size: cover;
        background-position: center;
        min-height: 480px;
        display: flex;
        align-items: center;
        border-radius: 0 0 24px 24px;
        overflow: hidden;
    }
    .page-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        background: rgba(30, 20, 48, 0.72);
        background-image: radial-gradient(circle at 75% 30%, rgba(212, 168, 83, 0.12), transparent 50%);
    }
    .page-hero .container {
        position: relative;
        z-index: 1;
        width: 100%;
    }
    .page-hero-content {
        max-width: 720px;
        padding: 56px 0;
    }
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: var(--color-secondary);
        color: #fff;
        padding: 6px 16px;
        border-radius: var(--radius-badge);
        font-size: 0.78rem;
        font-weight: 600;
        letter-spacing: 0.03em;
        margin-bottom: 18px;
    }
    .page-hero h1 {
        font-size: clamp(2rem, 5vw, 3.4rem);
        font-weight: 800;
        line-height: 1.25;
        color: var(--color-text-on-dark);
        margin: 0 0 18px;
        letter-spacing: 0.01em;
    }
    .page-hero .hero-sub {
        font-size: 1.05rem;
        color: var(--color-text-on-dark-muted);
        line-height: 1.8;
        margin: 0 0 28px;
        max-width: 620px;
    }
    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
        align-items: center;
    }
    .hero-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 24px;
        margin-top: 28px;
        padding-top: 20px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    .hero-meta-item {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.85rem;
        color: var(--color-text-on-dark-muted);
    }
    .hero-meta-item i {
        color: var(--color-accent);
    }
    /* Main layout */
    .main-section {
        padding: var(--section-pad-desktop) 0;
    }
    .main-section .container {
        display: flex;
        flex-wrap: wrap;
        gap: 32px;
    }
    .main-content {
        flex: 2 1 0%;
        min-width: 0;
    }
    .main-sidebar {
        flex: 1 1 280px;
        min-width: 0;
        max-width: 360px;
    }
    /* Article list */
    .section-heading {
        display: flex;
        align-items: baseline;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        margin-bottom: 24px;
    }
    .section-heading h2 {
        font-size: clamp(1.4rem, 2.5vw, 1.9rem);
        font-weight: 700;
        color: var(--color-text-main);
        margin: 0;
    }
    .section-heading .heading-line {
        flex: 1;
        height: 1px;
        background: var(--color-border);
        min-width: 40px;
        align-self: center;
    }
    .article-list {
        display: flex;
        flex-direction: column;
        gap: 18px;
    }
    .article-card {
        background: var(--color-surface);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-light);
        padding: 22px;
        display: flex;
        flex-wrap: wrap;
        gap: 18px;
        transition: box-shadow 0.25s ease, transform 0.2s ease;
        border: 1px solid var(--color-border);
    }
    .article-card:hover {
        box-shadow: var(--shadow-light-hover);
        transform: translateY(-1px);
    }
    .article-thumb {
        flex: 0 0 180px;
        max-width: 180px;
        border-radius: var(--radius-img);
        overflow: hidden;
        background: #E8E2D8;
    }
    .article-thumb img {
        width: 100%;
        height: 130px;
        object-fit: cover;
        transition: transform 0.3s ease;
    }
    .article-card:hover .article-thumb img {
        transform: scale(1.03);
    }
    .article-body {
        flex: 1;
        min-width: 220px;
    }
    .article-tag {
        display: inline-block;
        background: var(--color-primary);
        color: var(--color-accent);
        padding: 3px 12px;
        border-radius: var(--radius-badge);
        font-size: 0.72rem;
        font-weight: 600;
        margin-bottom: 8px;
        letter-spacing: 0.02em;
    }
    .article-body h3 {
        font-size: 1.15rem;
        font-weight: 700;
        line-height: 1.5;
        color: var(--color-text-main);
        margin: 0 0 6px;
    }
    .article-body p {
        font-size: 0.92rem;
        color: var(--color-text-muted);
        line-height: 1.75;
        margin: 0 0 12px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
        font-size: 0.78rem;
        color: var(--color-text-muted);
        align-items: center;
    }
    .article-meta span {
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }
    .article-link {
        font-size: 0.85rem;
        font-weight: 600;
        color: var(--color-accent);
        display: inline-flex;
        align-items: center;
        gap: 5px;
        transition: gap 0.2s ease, color 0.2s ease;
    }
    .article-link:hover {
        color: var(--color-accent-hover);
        gap: 9px;
        text-decoration: 1px dashed var(--color-accent);
    }
    /* Sidebar */
    .sidebar-box {
        background: var(--color-surface);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-light);
        padding: 20px;
        margin-bottom: 18px;
        border: 1px solid var(--color-border);
    }
    .sidebar-box h4 {
        font-size: 1rem;
        font-weight: 700;
        color: var(--color-text-main);
        margin: 0 0 14px;
        padding-bottom: 12px;
        border-bottom: 1px solid var(--color-border);
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .sidebar-box h4 i {
        color: var(--color-accent);
        font-size: 0.9rem;
    }
    .tag-cloud {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    .tag-pill {
        display: inline-flex;
        align-items: center;
        padding: 5px 14px;
        border-radius: var(--radius-badge);
        font-size: 0.78rem;
        font-weight: 500;
        background: var(--color-bg-base);
        color: var(--color-primary);
        transition: all 0.2s ease;
    }
    .tag-pill:hover {
        background: var(--color-primary);
        color: #fff;
    }
    .side-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .side-list li {
        padding: 10px 0;
        border-bottom: 1px solid var(--color-border);
        font-size: 0.9rem;
        line-height: 1.5;
    }
    .side-list li:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }
    .side-list a {
        color: var(--color-text-main);
        transition: color 0.2s ease;
    }
    .side-list a:hover {
        color: var(--color-accent);
    }
    .side-list .side-date {
        display: block;
        font-size: 0.75rem;
        color: var(--color-text-muted);
        margin-top: 3px;
    }
    /* Horizontal scroll strip */
    .related-strip-section {
        background: var(--color-bg-dark);
        padding: var(--section-pad-desktop) 0;
        border-radius: 24px 24px 0 0;
    }
    .related-strip-section .section-heading h2 {
        color: var(--color-text-on-dark);
    }
    .related-strip-section .section-heading .heading-line {
        background: var(--color-border-dark);
    }
    .scroll-strip {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        gap: 18px;
        padding-bottom: 8px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
    }
    .scroll-strip::-webkit-scrollbar {
        height: 5px;
    }
    .scroll-strip::-webkit-scrollbar-thumb {
        background: var(--color-border-dark);
        border-radius: 999px;
    }
    .scroll-card {
        flex: 0 0 260px;
        background: var(--color-surface-dark);
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-dark);
        transition: box-shadow 0.3s ease, transform 0.2s ease;
        border: 1px solid var(--color-border-dark);
    }
    .scroll-card:hover {
        box-shadow: var(--shadow-dark-hover);
        transform: translateY(-2px);
    }
    .scroll-card-img {
        height: 150px;
        background: #E8E2D8;
        overflow: hidden;
        position: relative;
    }
    .scroll-card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.3s ease;
    }
    .scroll-card:hover .scroll-card-img img {
        transform: scale(1.04);
    }
    .scroll-card-body {
        padding: 14px 16px;
    }
    .scroll-card-body h5 {
        font-size: 0.98rem;
        font-weight: 600;
        color: var(--color-text-on-dark);
        margin: 0 0 6px;
        line-height: 1.5;
    }
    .scroll-card-body p {
        font-size: 0.82rem;
        color: var(--color-text-on-dark-muted);
        line-height: 1.6;
        margin: 0 0 10px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .scroll-link {
        font-size: 0.8rem;
        font-weight: 600;
        color: var(--color-accent);
        display: inline-flex;
        align-items: center;
        gap: 5px;
    }
    .scroll-link:hover {
        color: var(--color-accent-hover);
    }
    /* Deep description */
    .deep-description {
        background: var(--color-surface);
        padding: 40px 28px;
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-light);
        margin-top: 28px;
        border: 1px solid var(--color-border);
    }
    .deep-description h3 {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--color-text-main);
        margin: 0 0 14px;
    }
    .deep-description p {
        font-size: 0.95rem;
        color: var(--color-text-main);
        line-height: 1.85;
        margin: 0 0 14px;
    }
    .deep-description p:last-child {
        margin-bottom: 0;
    }
    /* FAQ */
    .faq-section {
        padding: var(--section-pad-desktop) 0;
        background: var(--color-bg-base);
    }
    .faq-section .section-heading {
        margin-bottom: 28px;
    }
    .faq-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .faq-item {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        padding: 16px 20px;
        transition: box-shadow 0.25s ease;
    }
    .faq-item:hover {
        box-shadow: var(--shadow-light);
    }
    .faq-question {
        font-weight: 600;
        font-size: 1rem;
        color: var(--color-text-main);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        line-height: 1.5;
    }
    .faq-question .faq-icon {
        color: var(--color-accent);
        font-size: 1.1rem;
        flex-shrink: 0;
        transition: transform 0.3s ease;
    }
    .faq-answer {
        font-size: 0.92rem;
        color: var(--color-text-muted);
        line-height: 1.8;
        padding-top: 10px;
        display: none;
    }
    .faq-item.open .faq-answer {
        display: block;
    }
    .faq-item.open .faq-icon {
        transform: rotate(45deg);
    }
    /* CTA */
    .cta-section {
        background: var(--color-bg-dark);
        padding: var(--section-pad-desktop) 0;
        border-radius: 24px 24px 0 0;
        text-align: center;
        background-image: radial-gradient(circle at 50% 40%, rgba(212, 168, 83, 0.08), transparent 55%);
    }
    .cta-section h2 {
        font-size: clamp(1.6rem, 3.5vw, 2.3rem);
        font-weight: 800;
        color: var(--color-text-on-dark);
        margin: 0 0 14px;
    }
    .cta-section p {
        font-size: 1rem;
        color: var(--color-text-on-dark-muted);
        line-height: 1.8;
        margin: 0 auto 26px;
        max-width: 620px;
    }
    .cta-section .btn {
        margin-bottom: 14px;
    }
    .cta-hint {
        font-size: 0.8rem;
        color: rgba(242, 237, 228, 0.5);
    }
    /* Footer */
    .site-footer-seo {
        background: var(--color-bg-darker);
        color: var(--color-text-on-dark);
        padding: 48px 0 24px;
        border-radius: 0 24px 0 0;
    }
    .footer-top {
        display: flex;
        flex-wrap: wrap;
        gap: 24px;
        margin-bottom: 32px;
    }
    .footer-col {
        flex: 1 1 180px;
    }
    .footer-col h4 {
        font-size: 0.95rem;
        font-weight: 700;
        color: var(--color-accent);
        margin: 0 0 14px;
    }
    .footer-col a {
        display: block;
        font-size: 0.85rem;
        color: var(--color-text-on-dark-muted);
        padding: 5px 0;
        transition: color 0.2s ease;
    }
    .footer-col a:hover {
        color: var(--color-accent);
    }
    .footer-bottom {
        display: flex;
        flex-wrap: wrap;
        gap: 10px 18px;
        align-items: center;
        justify-content: space-between;
        padding-top: 18px;
        border-top: 1px solid var(--color-border-dark);
        font-size: 0.8rem;
        color: var(--color-text-on-dark-muted);
    }
    .footer-bottom a {
        color: var(--color-text-on-dark-muted);
    }
    .footer-bottom a:hover {
        color: var(--color-accent);
    }
    .footer-sep {
        margin: 0 6px;
        color: var(--color-border-dark);
    }
    /* Responsive */
    @media (max-width: 1024px) {
        .container {
            padding: 0 20px;
        }
        .main-section .container {
            gap: 22px;
        }
        .article-thumb {
            flex-basis: 140px;
            max-width: 140px;
        }
    }
    @media (max-width: 768px) {
        .main-section .container {
            flex-direction: column;
        }
        .main-sidebar {
            max-width: none;
            flex: 1 1 auto;
        }
        .article-card {
            flex-direction: column;
        }
        .article-thumb {
            flex-basis: auto;
            max-width: none;
            width: 100%;
        }
        .article-thumb img {
            height: 180px;
        }
        .nav-top {
            flex-wrap: wrap;
        }
        .nav-search {
            order: 3;
            flex-basis: 100%;
            max-width: none;
        }
        .page-hero {
            min-height: 420px;
        }
        .scroll-card {
            flex-basis: 220px;
        }
    }
    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }
        .btn-sm {
            padding: 7px 12px;
            font-size: 0.78rem;
        }
        .page-hero h1 {
            font-size: 1.7rem;
        }
        .hero-actions {
            flex-direction: column;
            align-items: stretch;
        }
        .hero-meta {
            gap: 12px;
        }
        .article-card {
            padding: 16px;
        }
        .article-body h3 {
            font-size: 1.05rem;
        }
        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
        }
        .scroll-card {
            flex-basis: 190px;
        }
        .footer-top {
            gap: 18px;
        }
        .footer-col {
            flex-basis: 45%;
        }
    }
    @media (min-width: 1280px) {
        .container {
            max-width: 1280px;
        }
    }
    /* Foundation accordion override for FAQ */
    .faq-item .faq-question {
        list-style: none;
    }
    .faq-item .faq-question::-webkit-details-marker {
        display: none;
    }

/* roulang page: category6 */
:root {
        --color-bg-base: #F5F1EA;
        --color-bg-dark: #1E1430;
        --color-bg-darker: #150E26;
        --color-surface: #FFFFFF;
        --color-surface-dark: #2A1E42;
        --color-primary: #3A2560;
        --color-primary-hover: #4D3378;
        --color-accent: #D4A853;
        --color-accent-hover: #E0B96A;
        --color-secondary: #C2456E;
        --color-text-main: #241B38;
        --color-text-muted: #6E6480;
        --color-text-on-dark: #F2EDE4;
        --color-text-on-dark-muted: #A89DB8;
        --color-border: #E2DCD2;
        --color-border-dark: #3A2C58;
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-badge: 999px;
        --radius-img: 8px;
        --shadow-light: 0 2px 12px rgba(30, 20, 48, 0.06), 0 8px 28px rgba(30, 20, 48, 0.05);
        --shadow-light-hover: 0 4px 20px rgba(30, 20, 48, 0.12), 0 12px 36px rgba(30, 20, 48, 0.08);
        --shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.3);
        --shadow-dark-hover: 0 8px 28px rgba(0, 0, 0, 0.45);
        --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        --font-en: "Inter", "Roboto", "SF Pro Display", sans-serif;
        --section-pad-desktop: 88px;
        --section-pad-mobile: 56px;
    }
    
    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }
    
    body {
        font-family: var(--font-cn);
        font-size: 16px;
        line-height: 1.85;
        color: var(--color-text-main);
        background-color: var(--color-bg-base);
        margin: 0;
        padding: 0;
        overflow-x: hidden;
    }
    
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    
    a {
        color: var(--color-primary);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    
    a:hover {
        color: var(--color-accent-hover);
    }
    
    a:focus-visible {
        outline: 2px solid var(--color-secondary);
        outline-offset: 2px;
    }
    
    button,
    input {
        font-family: var(--font-cn);
    }
    
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }
    
    /* Header & Navigation */
    .site-header {
        background: var(--color-bg-dark);
        position: sticky;
        top: 0;
        z-index: 100;
        transition: box-shadow 0.3s ease, background-color 0.3s ease;
    }
    
    .site-header.scrolled {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
        background-color: rgba(30, 20, 48, 0.97);
    }
    
    .nav-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 0;
        gap: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--color-text-on-dark);
        white-space: nowrap;
    }
    
    .brand-logo:hover {
        color: var(--color-accent);
    }
    
    .brand-logo .logo-icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
        background: var(--color-accent);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--color-bg-dark);
        font-size: 1.1rem;
        font-weight: 800;
        flex-shrink: 0;
    }
    
    .nav-search {
        flex: 1;
        max-width: 320px;
        min-width: 160px;
    }
    
    .nav-search input {
        width: 100%;
        padding: 10px 18px;
        border-radius: 999px;
        border: 1px solid rgba(255, 255, 255, 0.15);
        background: rgba(255, 255, 255, 0.12);
        color: var(--color-text-on-dark);
        font-size: 0.9rem;
        outline: none;
        transition: border-color 0.3s ease, background 0.3s ease;
    }
    
    .nav-search input::placeholder {
        color: rgba(242, 237, 228, 0.55);
        font-size: 0.85rem;
    }
    
    .nav-search input:focus {
        border-color: var(--color-accent);
        background: rgba(255, 255, 255, 0.18);
    }
    
    .nav-cta {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 22px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 0.9rem;
        line-height: 1.4;
        cursor: pointer;
        border: none;
        transition: all 0.25s ease;
        text-decoration: none;
        white-space: nowrap;
    }
    
    .btn-accent {
        background: var(--color-accent);
        color: var(--color-bg-dark);
    }
    
    .btn-accent:hover {
        background: var(--color-accent-hover);
        color: var(--color-bg-dark);
        transform: translateY(-1px);
    }
    
    .btn-accent:active {
        transform: translateY(1px);
    }
    
    .btn-outline-light {
        background: transparent;
        border: 1px solid rgba(242, 237, 228, 0.6);
        color: var(--color-text-on-dark);
    }
    
    .btn-outline-light:hover {
        background: rgba(242, 237, 228, 0.08);
        border-color: var(--color-accent);
        color: var(--color-accent);
    }
    
    .btn-outline-primary {
        background: transparent;
        border: 1px solid var(--color-primary);
        color: var(--color-primary);
    }
    
    .btn-outline-primary:hover {
        background: rgba(58, 37, 96, 0.05);
        border-color: var(--color-primary-hover);
        color: var(--color-primary-hover);
    }
    
    .btn-sm {
        padding: 8px 16px;
        font-size: 0.82rem;
    }
    
    .btn-lg {
        padding: 14px 36px;
        font-size: 1.1rem;
    }
    
    .nav-channels {
        padding: 10px 0;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-channels::-webkit-scrollbar {
        height: 2px;
    }
    
    .nav-channels::-webkit-scrollbar-thumb {
        background: rgba(212, 168, 83, 0.3);
        border-radius: 999px;
    }
    
    .channel-tabs {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        gap: 10px;
        white-space: nowrap;
    }
    
    .channel-tabs li {
        flex-shrink: 0;
    }
    
    .channel-tabs a {
        display: inline-block;
        padding: 8px 18px;
        border-radius: var(--radius-badge);
        font-size: 0.88rem;
        font-weight: 500;
        color: var(--color-text-on-dark-muted);
        transition: all 0.25s ease;
    }
    
    .channel-tabs a:hover {
        color: var(--color-accent);
    }
    
    .channel-tabs a.active {
        background: var(--color-accent);
        color: var(--color-bg-dark);
        font-weight: 600;
    }
    
    /* Page Hero (short banner) */
    .page-hero {
        background: var(--color-bg-dark);
        padding: 48px 0 40px;
        position: relative;
        overflow: hidden;
        border-bottom-left-radius: 24px;
        border-bottom-right-radius: 24px;
    }
    
    .page-hero::after {
        content: "";
        position: absolute;
        top: -80px;
        right: -60px;
        width: 360px;
        height: 360px;
        background: radial-gradient(circle, rgba(212, 168, 83, 0.08) 0%, transparent 70%);
        pointer-events: none;
    }
    
    .page-hero-content {
        position: relative;
        z-index: 2;
        display: flex;
        align-items: center;
        gap: 40px;
        flex-wrap: wrap;
    }
    
    .page-hero-text {
        flex: 1 1 60%;
        min-width: 280px;
    }
    
    .page-hero-image {
        flex: 0 0 30%;
        min-width: 220px;
        border-radius: var(--radius-img);
        overflow: hidden;
        box-shadow: var(--shadow-dark);
        border: 1px solid rgba(255, 255, 255, 0.08);
    }
    
    .page-hero-image img {
        width: 100%;
        height: auto;
        object-fit: cover;
    }
    
    .page-hero h1 {
        font-size: clamp(1.8rem, 4vw, 2.6rem);
        font-weight: 700;
        line-height: 1.25;
        color: var(--color-text-on-dark);
        margin: 0 0 12px;
    }
    
    .page-hero .subtitle {
        font-size: 1rem;
        color: var(--color-text-on-dark-muted);
        line-height: 1.7;
        max-width: 640px;
        margin: 0;
    }
    
    .page-hero .badge-line {
        display: flex;
        gap: 8px;
        margin-bottom: 16px;
        flex-wrap: wrap;
    }
    
    .badge {
        display: inline-flex;
        align-items: center;
        padding: 4px 14px;
        border-radius: var(--radius-badge);
        font-size: 0.75rem;
        font-weight: 600;
        letter-spacing: 0.02em;
    }
    
    .badge-accent {
        background: var(--color-accent);
        color: var(--color-bg-dark);
    }
    
    .badge-secondary {
        background: var(--color-secondary);
        color: #fff;
    }
    
    /* Timeline Section */
    .timeline-section {
        padding: var(--section-pad-desktop) 0 48px;
        background: var(--color-bg-base);
    }
    
    .section-heading {
        text-align: left;
        margin-bottom: 40px;
    }
    
    .section-heading h2 {
        font-size: clamp(1.5rem, 3vw, 2rem);
        font-weight: 700;
        color: var(--color-text-main);
        margin: 0 0 8px;
    }
    
    .section-heading p {
        color: var(--color-text-muted);
        margin: 0;
        font-size: 0.95rem;
    }
    
    .timeline-wrapper {
        position: relative;
        padding-left: 40px;
        max-width: 820px;
    }
    
    .timeline-wrapper::before {
        content: "";
        position: absolute;
        left: 12px;
        top: 8px;
        bottom: 8px;
        width: 2px;
        background: linear-gradient(to bottom, var(--color-accent), var(--color-primary), var(--color-border));
        border-radius: 2px;
    }
    
    .timeline-item {
        position: relative;
        margin-bottom: 32px;
        padding-left: 24px;
    }
    
    .timeline-item::before {
        content: "";
        position: absolute;
        left: -34px;
        top: 10px;
        width: 14px;
        height: 14px;
        border-radius: 50%;
        background: var(--color-accent);
        border: 3px solid var(--color-surface);
        box-shadow: 0 0 0 3px var(--color-accent);
        opacity: 0.8;
    }
    
    .timeline-item:nth-child(even)::before {
        background: var(--color-primary);
        box-shadow: 0 0 0 3px var(--color-primary);
        opacity: 0.7;
    }
    
    .timeline-item:hover::before {
        opacity: 1;
        transform: scale(1.2);
        transition: all 0.25s ease;
    }
    
    .timeline-date {
        font-family: var(--font-en);
        font-size: 0.8rem;
        font-weight: 700;
        letter-spacing: 0.08em;
        color: var(--color-accent);
        display: block;
        margin-bottom: 4px;
    }
    
    .timeline-item h3 {
        font-size: 1.1rem;
        font-weight: 600;
        color: var(--color-text-main);
        margin: 0 0 8px;
        line-height: 1.4;
    }
    
    .timeline-item p {
        font-size: 0.92rem;
        line-height: 1.75;
        color: var(--color-text-muted);
        margin: 0;
        max-width: 700px;
    }
    
    .timeline-card {
        background: var(--color-surface);
        border-radius: var(--radius-card);
        padding: 18px 22px;
        box-shadow: var(--shadow-light);
        border: 1px solid var(--color-border);
        transition: all 0.3s ease;
    }
    
    .timeline-card:hover {
        box-shadow: var(--shadow-light-hover);
        border-color: rgba(212, 168, 83, 0.5);
        transform: translateY(-2px);
    }
    
    /* Info block after timeline */
    .timeline-summary {
        background: var(--color-surface);
        border-radius: var(--radius-card);
        padding: 36px 40px;
        box-shadow: var(--shadow-light);
        border: 1px solid var(--color-border);
        margin-top: 16px;
    }
    
    .timeline-summary h3 {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--color-text-main);
        margin: 0 0 16px;
    }
    
    .timeline-summary p {
        color: var(--color-text-muted);
        line-height: 1.8;
        margin: 0 0 14px;
    }
    
    .timeline-summary p:last-child {
        margin-bottom: 0;
    }
    
    /* CTA Section */
    .cta-section {
        background: var(--color-bg-dark);
        padding: 64px 0;
        position: relative;
        overflow: hidden;
    }
    
    .cta-section::before {
        content: "";
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 480px;
        height: 480px;
        background: radial-gradient(circle, rgba(212, 168, 83, 0.06) 0%, transparent 70%);
        pointer-events: none;
    }
    
    .cta-content {
        position: relative;
        z-index: 2;
        text-align: center;
        max-width: 700px;
        margin: 0 auto;
    }
    
    .cta-content h2 {
        font-size: clamp(1.6rem, 3.5vw, 2.2rem);
        font-weight: 700;
        color: var(--color-text-on-dark);
        margin: 0 0 12px;
        line-height: 1.3;
    }
    
    .cta-content p {
        color: var(--color-text-on-dark-muted);
        font-size: 1rem;
        margin: 0 0 28px;
        line-height: 1.7;
    }
    
    .cta-hint {
        font-size: 0.8rem;
        color: rgba(242, 237, 228, 0.5);
        margin-top: 16px;
    }
    
    /* Footer */
    .site-footer-seo {
        background: var(--color-bg-darker);
        color: var(--color-text-on-dark-muted);
        padding: 48px 0 24px;
    }
    
    .footer-top {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        padding-bottom: 32px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        margin-bottom: 24px;
    }
    
    .footer-col h4 {
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--color-text-on-dark);
        margin: 0 0 14px;
    }
    
    .footer-col a {
        display: block;
        color: var(--color-text-on-dark-muted);
        font-size: 0.85rem;
        padding: 4px 0;
        transition: color 0.2s ease;
    }
    
    .footer-col a:hover {
        color: var(--color-accent);
    }
    
    .footer-bottom {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        font-size: 0.8rem;
    }
    
    .footer-bottom a {
        color: var(--color-text-on-dark-muted);
    }
    
    .footer-bottom a:hover {
        color: var(--color-accent);
    }
    
    .footer-sep {
        margin: 0 8px;
        color: rgba(242, 237, 228, 0.3);
    }
    
    /* Responsive */
    @media (max-width: 1024px) {
        .page-hero-content {
            gap: 24px;
        }
        .page-hero-image {
            flex: 0 0 35%;
        }
    }
    
    @media (max-width: 768px) {
        .container {
            padding: 0 18px;
        }
        .nav-top {
            flex-wrap: wrap;
            gap: 10px;
        }
        .nav-search {
            order: 3;
            flex: 1 1 100%;
            max-width: 100%;
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-cta .btn {
            padding: 8px 14px;
            font-size: 0.8rem;
        }
        .footer-top {
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }
        .page-hero {
            padding: 36px 0 32px;
        }
        .page-hero-content {
            flex-direction: column;
            align-items: flex-start;
        }
        .page-hero-image {
            flex: 0 0 auto;
            width: 100%;
            max-width: 320px;
        }
        .timeline-wrapper {
            padding-left: 32px;
        }
        .timeline-wrapper::before {
            left: 8px;
        }
        .timeline-item::before {
            left: -30px;
        }
        .timeline-card {
            padding: 14px 16px;
        }
        .timeline-section {
            padding-top: 48px;
        }
        .timeline-summary {
            padding: 24px 18px;
        }
    }
    
    @media (max-width: 520px) {
        .nav-top {
            padding: 10px 0;
        }
        .brand-logo {
            font-size: 1.05rem;
            gap: 8px;
        }
        .brand-logo .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 0.95rem;
        }
        .nav-cta .btn-sm {
            padding: 6px 10px;
            font-size: 0.72rem;
        }
        .channel-tabs a {
            padding: 6px 12px;
            font-size: 0.8rem;
        }
        .footer-top {
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .timeline-wrapper {
            padding-left: 24px;
        }
        .timeline-wrapper::before {
            left: 4px;
        }
        .timeline-item {
            padding-left: 16px;
            margin-bottom: 24px;
        }
        .timeline-item::before {
            left: -23px;
            width: 10px;
            height: 10px;
        }
        .timeline-date {
            font-size: 0.72rem;
        }
        .timeline-item h3 {
            font-size: 1rem;
        }
        .timeline-item p {
            font-size: 0.85rem;
        }
    }

/* roulang page: category4 */
:root {
            --color-bg-base: #F5F1EA;
            --color-bg-dark: #1E1430;
            --color-bg-darker: #150E26;
            --color-surface: #FFFFFF;
            --color-surface-dark: #2A1E42;
            --color-primary: #3A2560;
            --color-primary-hover: #4D3378;
            --color-accent: #D4A853;
            --color-accent-hover: #E0B96A;
            --color-secondary: #C2456E;
            --color-text-main: #241B38;
            --color-text-muted: #6E6480;
            --color-text-on-dark: #F2EDE4;
            --color-text-on-dark-muted: #A89DB8;
            --color-border: #E2DCD2;
            --color-border-dark: #3A2C58;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --radius-img: 8px;
            --shadow-light: 0 2px 12px rgba(30, 20, 48, 0.06), 0 8px 28px rgba(30, 20, 48, 0.05);
            --shadow-light-hover: 0 4px 20px rgba(30, 20, 48, 0.12), 0 12px 36px rgba(30, 20, 48, 0.08);
            --shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.3);
            --shadow-dark-hover: 0 8px 28px rgba(0, 0, 0, 0.45);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-en: "Inter", "Roboto", "SF Pro Display", sans-serif;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 52px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text-main);
            background-color: var(--color-bg-base);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
        }

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

        a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }

        button,
        input {
            font-family: var(--font-cn);
        }

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

        /* Header & Navigation */
        .site-header {
            background: var(--color-bg-dark);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: box-shadow 0.3s ease, background-color 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
            background-color: rgba(30, 20, 48, 0.97);
        }

        .nav-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: var(--color-accent);
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-bg-dark);
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-search {
            flex: 1;
            max-width: 320px;
            min-width: 160px;
        }

        .nav-search input {
            width: 100%;
            padding: 10px 18px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-text-on-dark);
            font-size: 0.9rem;
            outline: none;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .nav-search input::placeholder {
            color: rgba(242, 237, 228, 0.55);
            font-size: 0.85rem;
        }

        .nav-search input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.18);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.9rem;
            line-height: 1.4;
            cursor: pointer;
            border: none;
            transition: all 0.25s ease;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-accent {
            background: var(--color-accent);
            color: var(--color-bg-dark);
        }

        .btn-accent:hover {
            background: var(--color-accent-hover);
            color: var(--color-bg-dark);
            transform: translateY(-1px);
        }

        .btn-accent:active {
            transform: translateY(1px);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(242, 237, 228, 0.55);
            color: var(--color-text-on-dark);
        }

        .btn-outline-light:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(212, 168, 83, 0.08);
        }

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

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

        .btn-lg {
            padding: 14px 36px;
            font-size: 1.1rem;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.8rem;
        }

        /* Channel Tabs */
        .nav-channels {
            padding: 8px 0;
        }

        .channel-tabs {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            white-space: nowrap;
            align-items: center;
        }

        .channel-tabs::-webkit-scrollbar {
            display: none;
        }

        .channel-tabs li {
            flex-shrink: 0;
        }

        .channel-tabs a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-badge);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text-on-dark-muted);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .channel-tabs a:hover {
            color: var(--color-accent);
            background: rgba(212, 168, 83, 0.08);
        }

        .channel-tabs a.active {
            background: var(--color-accent);
            color: var(--color-bg-dark);
            font-weight: 600;
        }

        /* Page Header */
        .page-header {
            background: var(--color-bg-dark);
            padding: 48px 0 56px;
            border-bottom: 1px solid var(--color-border-dark);
            position: relative;
            overflow: hidden;
        }

        .page-header::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 168, 83, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-header h1 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 12px;
            line-height: 1.3;
            position: relative;
            z-index: 1;
        }

        .page-header .page-subtitle {
            font-size: 1rem;
            color: var(--color-text-on-dark-muted);
            margin: 0;
            max-width: 680px;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }

        /* Section Base */
        section {
            padding: var(--section-pad-desktop) 0;
        }

        .section-title {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            margin-bottom: 32px;
            line-height: 1.7;
            max-width: 720px;
        }

        /* Ranking Modules */
        .ranking-module {
            margin-bottom: 48px;
        }

        .ranking-module:last-of-type {
            margin-bottom: 0;
        }

        .ranking-module-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border);
        }

        .ranking-module-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0;
        }

        .ranking-module-title .module-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--color-primary);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .ranking-module-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-text-muted);
            background: var(--color-bg-base);
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            border: 1px solid var(--color-border);
        }

        .rank-list {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-light);
            overflow: hidden;
            border: 1px solid var(--color-border);
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            border-bottom: 1px solid var(--color-border);
            transition: background-color 0.2s ease;
        }

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

        .rank-item:hover {
            background: #FAF7F2;
        }

        .rank-number {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.95rem;
            flex-shrink: 0;
            font-family: var(--font-en);
        }

        .rank-number.top-1 {
            background: var(--color-accent);
            color: var(--color-bg-dark);
        }

        .rank-number.top-2 {
            background: #E8DFD0;
            color: var(--color-text-main);
        }

        .rank-number.top-3 {
            background: #D9C6A5;
            color: var(--color-text-main);
        }

        .rank-number.normal {
            background: var(--color-bg-base);
            color: var(--color-text-muted);
        }

        .rank-info {
            flex: 1;
            min-width: 0;
        }

        .rank-name {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text-main);
            margin-bottom: 2px;
        }

        .rank-desc {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            line-height: 1.5;
        }

        .rank-value {
            font-family: var(--font-en);
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .rank-trend {
            display: inline-flex;
            align-items: center;
            gap: 3px;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .rank-trend.up {
            background: rgba(58, 37, 96, 0.08);
            color: #2D7A4F;
        }

        .rank-trend.down {
            background: rgba(194, 69, 110, 0.08);
            color: var(--color-secondary);
        }

        .rank-trend.stable {
            background: rgba(110, 100, 128, 0.1);
            color: var(--color-text-muted);
        }

        /* Data Insight Blocks */
        .data-insight-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        .insight-card {
            background: var(--color-surface-dark);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            box-shadow: var(--shadow-dark);
            border: 1px solid var(--color-border-dark);
            transition: all 0.25s ease;
        }

        .insight-card:hover {
            box-shadow: var(--shadow-dark-hover);
            transform: translateY(-2px);
            border-color: rgba(212, 168, 83, 0.3);
        }

        .insight-value {
            font-family: var(--font-en);
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--color-accent);
            margin-bottom: 4px;
            line-height: 1.2;
        }

        .insight-label {
            font-size: 0.82rem;
            color: var(--color-text-on-dark-muted);
            font-weight: 500;
            margin-bottom: 6px;
        }

        .insight-note {
            font-size: 0.75rem;
            color: rgba(242, 237, 228, 0.55);
            line-height: 1.5;
        }

        /* Dark section variant */
        .section-dark {
            background: var(--color-bg-dark);
        }

        .section-dark .section-title {
            color: var(--color-text-on-dark);
        }

        .section-dark .section-subtitle {
            color: var(--color-text-on-dark-muted);
        }

        /* Content prose */
        .prose-block {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            box-shadow: var(--shadow-light);
            border: 1px solid var(--color-border);
            margin-bottom: 32px;
        }

        .prose-block h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 16px;
            line-height: 1.4;
        }

        .prose-block p {
            font-size: 0.95rem;
            color: var(--color-text-main);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .prose-block p:last-child {
            margin-bottom: 0;
        }

        .prose-block .highlight-accent {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Inline image */
        .inline-image {
            border-radius: var(--radius-img);
            overflow: hidden;
            margin: 20px 0;
            border: 1px solid var(--color-border);
            position: relative;
            background: #E8E2D8;
            aspect-ratio: 16/7;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .inline-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-img);
        }

        .inline-image .img-placeholder-text {
            position: absolute;
            color: rgba(36, 27, 56, 0.25);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-bg-dark);
            padding: var(--section-pad-desktop) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 700px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(ellipse, rgba(212, 168, 83, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section .cta-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-section .cta-subtitle {
            font-size: 0.95rem;
            color: var(--color-text-on-dark-muted);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }

        .cta-section .cta-hint {
            font-size: 0.8rem;
            color: rgba(242, 237, 228, 0.5);
            margin-top: 16px;
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer-seo {
            background: var(--color-bg-darker);
            color: var(--color-text-on-dark-muted);
            padding: 48px 0 24px;
            font-size: 0.85rem;
        }

        .footer-top {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 24px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 12px;
        }

        .footer-col a {
            display: block;
            color: var(--color-text-on-dark-muted);
            font-size: 0.82rem;
            padding: 4px 0;
            transition: color 0.2s ease;
        }

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

        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 0.78rem;
            color: rgba(242, 237, 228, 0.45);
            text-align: center;
        }

        .footer-bottom a {
            color: var(--color-text-on-dark-muted);
        }

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

        .footer-sep {
            margin: 0 8px;
            opacity: 0.5;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .data-insight-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

        @media (max-width: 768px) {
            :root {
                --section-pad-desktop: 56px;
            }

            section {
                padding: var(--section-pad-mobile) 0;
            }

            .nav-top {
                flex-wrap: wrap;
                padding: 10px 0;
                gap: 10px;
            }

            .nav-search {
                order: 3;
                max-width: 100%;
                min-width: 100%;
                flex-basis: 100%;
            }

            .nav-search input {
                padding: 8px 16px;
                font-size: 0.85rem;
            }

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

            .channel-tabs a {
                padding: 6px 12px;
                font-size: 0.78rem;
            }

            .page-header {
                padding: 32px 0 40px;
            }

            .rank-item {
                flex-wrap: wrap;
                gap: 8px;
                padding: 14px 16px;
            }

            .rank-number {
                width: 30px;
                height: 30px;
                font-size: 0.8rem;
                border-radius: 6px;
            }

            .rank-value {
                font-size: 0.95rem;
            }

            .rank-trend {
                font-size: 0.7rem;
                padding: 2px 8px;
            }

            .prose-block {
                padding: 24px 20px;
            }

            .data-insight-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .insight-card {
                padding: 18px 14px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .cta-section {
                padding: 56px 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            :root {
                --section-pad-mobile: 44px;
            }

            .nav-top {
                justify-content: space-between;
            }

            .brand-logo {
                font-size: 1.05rem;
                gap: 8px;
            }

            .brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
                border-radius: 6px;
            }

            .nav-cta .btn {
                padding: 6px 10px;
                font-size: 0.72rem;
            }

            .channel-tabs a {
                padding: 5px 10px;
                font-size: 0.72rem;
                gap: 4px;
            }

            .data-insight-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .rank-item {
                flex-wrap: wrap;
                gap: 6px;
                padding: 12px;
            }

            .rank-info {
                flex-basis: calc(100% - 50px);
            }

            .rank-value {
                font-size: 0.9rem;
                flex-basis: auto;
            }

            .rank-trend {
                flex-basis: 100%;
                margin-left: 40px;
                justify-content: center;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .prose-block {
                padding: 20px 16px;
            }

            .inline-image {
                aspect-ratio: 16/9;
                margin: 12px 0;
            }
        }

        @media (max-width: 640px) {
            .rank-trend {
                margin-left: 0;
                flex-basis: auto;
            }

            .rank-info {
                flex-basis: 60%;
            }
        }

/* roulang page: category5 */
:root {
        --color-bg-base: #F5F1EA;
        --color-bg-dark: #1E1430;
        --color-bg-darker: #150E26;
        --color-surface: #FFFFFF;
        --color-surface-dark: #2A1E42;
        --color-primary: #3A2560;
        --color-primary-hover: #4D3378;
        --color-accent: #D4A853;
        --color-accent-hover: #E0B96A;
        --color-secondary: #C2456E;
        --color-text-main: #241B38;
        --color-text-muted: #6E6480;
        --color-text-on-dark: #F2EDE4;
        --color-text-on-dark-muted: #A89DB8;
        --color-border: #E2DCD2;
        --color-border-dark: #3A2C58;
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-badge: 999px;
        --radius-img: 8px;
        --shadow-light: 0 2px 12px rgba(30, 20, 48, 0.06), 0 8px 28px rgba(30, 20, 48, 0.05);
        --shadow-light-hover: 0 4px 20px rgba(30, 20, 48, 0.12), 0 12px 36px rgba(30, 20, 48, 0.08);
        --shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.3);
        --shadow-dark-hover: 0 8px 28px rgba(0, 0, 0, 0.45);
        --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        --font-en: "Inter", "Roboto", "SF Pro Display", sans-serif;
        --section-pad-desktop: 72px;
        --section-pad-mobile: 52px;
    }

    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }

    body {
        font-family: var(--font-cn);
        font-size: 16px;
        line-height: 1.85;
        color: var(--color-text-main);
        background-color: var(--color-bg-base);
        margin: 0;
        padding: 0;
        overflow-x: hidden;
    }

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

    a {
        color: var(--color-primary);
        text-decoration: none;
        transition: color 0.2s ease;
    }

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

    a:focus-visible {
        outline: 2px solid var(--color-secondary);
        outline-offset: 2px;
    }

    button,
    input {
        font-family: var(--font-cn);
    }

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

    /* ========== Header & Navigation ========== */
    .site-header {
        background: var(--color-bg-dark);
        position: sticky;
        top: 0;
        z-index: 100;
        transition: box-shadow 0.3s ease, background-color 0.3s ease;
    }

    .site-header.scrolled {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
        background-color: rgba(30, 20, 48, 0.97);
    }

    .nav-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 0;
        gap: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--color-text-on-dark);
        white-space: nowrap;
    }

    .brand-logo:hover {
        color: var(--color-accent);
    }

    .brand-logo .logo-icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
        background: var(--color-accent);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--color-bg-dark);
        font-size: 1.1rem;
        font-weight: 800;
        flex-shrink: 0;
    }

    .nav-search {
        flex: 1;
        max-width: 320px;
        min-width: 140px;
    }

    .nav-search input {
        width: 100%;
        padding: 10px 18px;
        border-radius: 999px;
        border: 1px solid rgba(255, 255, 255, 0.15);
        background: rgba(255, 255, 255, 0.12);
        color: var(--color-text-on-dark);
        font-size: 0.9rem;
        outline: none;
        transition: border-color 0.3s ease, background 0.3s ease;
    }

    .nav-search input::placeholder {
        color: rgba(242, 237, 228, 0.55);
        font-size: 0.85rem;
    }

    .nav-search input:focus {
        border-color: var(--color-accent);
        background: rgba(255, 255, 255, 0.18);
    }

    .nav-cta {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 22px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 0.9rem;
        line-height: 1.4;
        cursor: pointer;
        border: none;
        transition: all 0.25s ease;
        text-decoration: none;
        white-space: nowrap;
    }

    .btn-accent {
        background: var(--color-accent);
        color: var(--color-bg-dark);
    }

    .btn-accent:hover {
        background: var(--color-accent-hover);
        color: var(--color-bg-dark);
        transform: translateY(-1px);
    }

    .btn-accent:active {
        transform: translateY(1px);
    }

    .btn-outline-light {
        background: transparent;
        border: 1px solid rgba(242, 237, 228, 0.6);
        color: var(--color-text-on-dark);
    }

    .btn-outline-light:hover {
        background: rgba(255, 255, 255, 0.08);
        border-color: var(--color-accent);
        color: var(--color-accent);
        transform: translateY(-1px);
    }

    .btn-outline-light:active {
        transform: translateY(1px);
    }

    .btn-sm {
        padding: 8px 16px;
        font-size: 0.82rem;
    }

    .btn-lg {
        padding: 14px 36px;
        font-size: 1.1rem;
    }

    .nav-channels {
        padding: 10px 0;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
        scrollbar-color: var(--color-border-dark) transparent;
    }

    .nav-channels::-webkit-scrollbar {
        height: 4px;
    }

    .nav-channels::-webkit-scrollbar-track {
        background: transparent;
    }

    .nav-channels::-webkit-scrollbar-thumb {
        background: var(--color-border-dark);
        border-radius: 999px;
    }

    .channel-tabs {
        display: flex;
        align-items: center;
        gap: 8px;
        list-style: none;
        margin: 0;
        padding: 0;
        white-space: nowrap;
        min-width: max-content;
    }

    .channel-tabs li {
        flex-shrink: 0;
    }

    .channel-tabs a {
        display: inline-block;
        padding: 8px 18px;
        border-radius: 999px;
        font-size: 0.85rem;
        font-weight: 500;
        color: var(--color-text-on-dark-muted);
        background: transparent;
        transition: all 0.25s ease;
    }

    .channel-tabs a:hover {
        color: var(--color-accent);
        background: rgba(255, 255, 255, 0.06);
    }

    .channel-tabs a.active {
        background: var(--color-accent);
        color: var(--color-bg-dark);
        font-weight: 600;
    }

    .channel-tabs a.active:hover {
        background: var(--color-accent-hover);
        color: var(--color-bg-dark);
    }

    /* ========== Gallery Page Header ========== */
    .gallery-page-header {
        background: var(--color-bg-dark);
        position: relative;
        padding: 72px 0 88px;
        overflow: hidden;
    }

    .gallery-page-header::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-image: url('/assets/images/backpic/back-1.webp');
        background-size: cover;
        background-position: center;
        opacity: 0.22;
        z-index: 0;
    }

    .gallery-page-header::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: radial-gradient(ellipse at 30% 50%, rgba(212, 168, 83, 0.12) 0%, transparent 65%), radial-gradient(ellipse at 70% 20%, rgba(194, 69, 110, 0.08) 0%, transparent 50%);
        z-index: 1;
    }

    .gallery-page-header .container {
        position: relative;
        z-index: 2;
    }

    .gallery-breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 24px;
        font-size: 0.82rem;
        color: var(--color-text-on-dark-muted);
    }

    .gallery-breadcrumb a {
        color: var(--color-text-on-dark-muted);
    }

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

    .gallery-breadcrumb .sep {
        color: var(--color-accent);
        font-size: 0.7rem;
    }

    .gallery-breadcrumb .current {
        color: var(--color-accent);
    }

    .gallery-page-header h1 {
        font-size: clamp(1.8rem, 4vw, 2.8rem);
        font-weight: 700;
        color: var(--color-text-on-dark);
        margin: 0 0 16px;
        line-height: 1.25;
    }

    .gallery-page-header .subtitle {
        font-size: 1.08rem;
        color: var(--color-text-on-dark-muted);
        max-width: 660px;
        margin: 0 0 28px;
        line-height: 1.7;
    }

    .gallery-header-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 32px;
        padding-top: 24px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .gallery-header-meta .meta-item {
        display: flex;
        flex-direction: column;
    }

    .gallery-header-meta .meta-num {
        font-size: 1.6rem;
        font-weight: 800;
        color: var(--color-accent);
        font-family: var(--font-en);
        letter-spacing: 0.02em;
        line-height: 1.2;
    }

    .gallery-header-meta .meta-label {
        font-size: 0.8rem;
        color: var(--color-text-on-dark-muted);
        margin-top: 4px;
    }

    /* ========== Masonry Gallery Section ========== */
    .gallery-section {
        padding: var(--section-pad-desktop) 0;
        background: var(--color-bg-base);
    }

    .section-heading {
        margin-bottom: 40px;
    }

    .section-heading .eyebrow {
        display: inline-block;
        padding: 5px 14px;
        border-radius: var(--radius-badge);
        background: var(--color-secondary);
        color: #fff;
        font-size: 0.72rem;
        font-weight: 600;
        letter-spacing: 0.04em;
        margin-bottom: 12px;
    }

    .section-heading h2 {
        font-size: clamp(1.5rem, 3vw, 2.1rem);
        font-weight: 700;
        color: var(--color-text-main);
        margin: 0 0 10px;
        line-height: 1.3;
    }

    .section-heading .section-desc {
        color: var(--color-text-muted);
        font-size: 0.95rem;
        max-width: 620px;
        line-height: 1.75;
    }

    .gallery-masonry {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        align-items: start;
    }

    .gallery-column {
        display: flex;
        flex-direction: column;
        gap: 24px;
    }

    .gallery-item {
        position: relative;
        border-radius: var(--radius-card);
        overflow: hidden;
        cursor: pointer;
        background: var(--color-surface);
        box-shadow: var(--shadow-light);
        transition: box-shadow 0.3s ease, transform 0.3s ease;
        break-inside: avoid;
    }

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

    .gallery-item-img {
        position: relative;
        overflow: hidden;
        background: #E8E2D8;
        width: 100%;
    }

    .gallery-item-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }

    .gallery-item:hover .gallery-item-img img {
        transform: scale(1.04);
    }

    .ratio-3-4 {
        aspect-ratio: 3 / 4;
    }

    .ratio-1-1 {
        aspect-ratio: 1 / 1;
    }

    .ratio-4-3 {
        aspect-ratio: 4 / 3;
    }

    .ratio-16-9 {
        aspect-ratio: 16 / 9;
    }

    .gallery-item-overlay {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 32px 18px 18px;
        background: linear-gradient(to top, rgba(21, 14, 38, 0.88) 0%, rgba(21, 14, 38, 0.45) 60%, transparent 100%);
        color: var(--color-text-on-dark);
        transition: opacity 0.3s ease;
        pointer-events: none;
    }

    .gallery-item-overlay .overlay-tag {
        display: inline-block;
        padding: 3px 12px;
        border-radius: var(--radius-badge);
        background: var(--color-accent);
        color: var(--color-bg-dark);
        font-size: 0.68rem;
        font-weight: 600;
        margin-bottom: 8px;
        letter-spacing: 0.03em;
    }

    .gallery-item-overlay h3 {
        font-size: 1.05rem;
        font-weight: 600;
        color: var(--color-text-on-dark);
        margin: 0 0 6px;
        line-height: 1.35;
    }

    .gallery-item-overlay p {
        font-size: 0.82rem;
        color: var(--color-text-on-dark-muted);
        margin: 0;
        line-height: 1.6;
        max-height: 84px;
        overflow: hidden;
    }

    /* ========== Gallery Note / Deep Text Section ========== */
    .gallery-note-section {
        padding: var(--section-pad-desktop) 0;
        background: var(--color-surface);
    }

    .gallery-note-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 48px;
    }

    .gallery-note-main h2 {
        font-size: clamp(1.4rem, 2.5vw, 1.9rem);
        font-weight: 700;
        color: var(--color-text-main);
        margin: 0 0 18px;
        line-height: 1.35;
    }

    .gallery-note-main p {
        color: var(--color-text-muted);
        font-size: 0.95rem;
        line-height: 1.85;
        margin: 0 0 16px;
    }

    .gallery-note-main p strong {
        color: var(--color-primary);
        font-weight: 600;
    }

    .gallery-note-side {
        background: var(--color-bg-base);
        border-radius: var(--radius-card);
        padding: 28px;
        border: 1px solid var(--color-border);
    }

    .gallery-note-side h3 {
        font-size: 1.1rem;
        font-weight: 600;
        color: var(--color-primary);
        margin: 0 0 14px;
    }

    .gallery-note-side ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .gallery-note-side ul li {
        padding: 10px 0;
        border-bottom: 1px solid var(--color-border);
        font-size: 0.88rem;
        color: var(--color-text-muted);
        display: flex;
        align-items: flex-start;
        gap: 10px;
        line-height: 1.65;
    }

    .gallery-note-side ul li:last-child {
        border-bottom: none;
    }

    .gallery-note-side ul li i {
        color: var(--color-accent);
        font-size: 0.75rem;
        margin-top: 6px;
        flex-shrink: 0;
    }

    /* ========== FAQ Section ========== */
    .faq-section {
        padding: var(--section-pad-desktop) 0;
        background: #EDE8DF;
    }

    .faq-section .section-heading {
        text-align: center;
    }

    .faq-section .section-heading .section-desc {
        margin: 0 auto;
    }

    .accordion {
        max-width: 820px;
        margin: 0 auto;
        list-style: none;
        padding: 0;
    }

    .accordion-item {
        margin-bottom: 12px;
        border-radius: 8px;
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        overflow: hidden;
        transition: box-shadow 0.3s ease;
    }

    .accordion-item:hover {
        box-shadow: var(--shadow-light);
    }

    .accordion-title {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 16px 20px;
        font-size: 0.98rem;
        font-weight: 600;
        color: var(--color-text-main);
        cursor: pointer;
        gap: 16px;
        transition: color 0.2s ease;
    }

    .accordion-title:hover {
        color: var(--color-primary);
    }

    .accordion-title::after {
        content: '+';
        font-size: 1.3rem;
        font-weight: 500;
        color: var(--color-accent);
        transition: transform 0.3s ease;
        flex-shrink: 0;
    }

    .accordion-item.is-active .accordion-title::after {
        content: '−';
    }

    .accordion-content {
        padding: 0 20px 18px;
        color: var(--color-text-muted);
        font-size: 0.9rem;
        line-height: 1.75;
        display: none;
    }

    .accordion-item.is-active .accordion-content {
        display: block;
    }

    /* ========== CTA Section ========== */
    .cta-section {
        padding: var(--section-pad-desktop) 0;
        background: var(--color-bg-dark);
        position: relative;
        overflow: hidden;
        text-align: center;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        top: -40%;
        left: 50%;
        transform: translateX(-50%);
        width: 700px;
        height: 700px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(212, 168, 83, 0.14) 0%, transparent 65%);
        pointer-events: none;
    }

    .cta-section .container {
        position: relative;
        z-index: 2;
    }

    .cta-section h2 {
        font-size: clamp(1.5rem, 3vw, 2.2rem);
        font-weight: 700;
        color: var(--color-text-on-dark);
        margin: 0 0 14px;
        line-height: 1.3;
    }

    .cta-section p {
        color: var(--color-text-on-dark-muted);
        font-size: 0.98rem;
        max-width: 520px;
        margin: 0 auto 28px;
        line-height: 1.7;
    }

    .cta-section .btn {
        margin-bottom: 14px;
    }

    .cta-section .cta-hint {
        font-size: 0.78rem;
        color: rgba(242, 237, 228, 0.5);
        margin: 0;
    }

    /* ========== Footer ========== */
    .site-footer-seo {
        background: var(--color-bg-darker);
        padding: 48px 0 28px;
        color: var(--color-text-on-dark-muted);
        font-size: 0.88rem;
    }

    .footer-top {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 32px;
        padding-bottom: 32px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-col h4 {
        font-size: 0.88rem;
        font-weight: 600;
        color: var(--color-accent);
        margin: 0 0 14px;
    }

    .footer-col a {
        display: block;
        color: var(--color-text-on-dark-muted);
        font-size: 0.82rem;
        padding: 4px 0;
        transition: color 0.2s ease;
    }

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

    .footer-bottom {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding-top: 22px;
        font-size: 0.78rem;
        color: var(--color-text-on-dark-muted);
    }

    .footer-bottom a {
        color: var(--color-text-on-dark-muted);
        transition: color 0.2s ease;
    }

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

    .footer-sep {
        margin: 0 8px;
        color: rgba(255, 255, 255, 0.2);
    }

    /* ========== Responsive ========== */
    @media (max-width: 1024px) {
        .gallery-masonry {
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .gallery-column {
            gap: 20px;
        }
        .gallery-note-grid {
            grid-template-columns: 1fr;
            gap: 32px;
        }
    }

    @media (max-width: 768px) {
        :root {
            --section-pad-desktop: 56px;
        }
        .nav-top {
            flex-wrap: wrap;
            gap: 10px;
        }
        .nav-search {
            order: 3;
            flex-basis: 100%;
            max-width: 100%;
            min-width: 100%;
        }
        .nav-cta .btn {
            padding: 8px 14px;
            font-size: 0.78rem;
        }
        .gallery-masonry {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .gallery-column {
            gap: 16px;
        }
        .footer-top {
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .gallery-note-grid {
            grid-template-columns: 1fr;
        }
        .gallery-page-header .subtitle {
            font-size: 0.95rem;
        }
        .gallery-header-meta .meta-num {
            font-size: 1.3rem;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }
        .gallery-masonry {
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .gallery-column {
            gap: 16px;
        }
        .gallery-item-overlay p {
            max-height: none;
            font-size: 0.8rem;
        }
        .gallery-section {
            padding: 44px 0;
        }
        .gallery-note-section {
            padding: 44px 0;
        }
        .faq-section {
            padding: 44px 0;
        }
        .cta-section {
            padding: 44px 0;
        }
        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }
        .channel-tabs a {
            padding: 6px 14px;
            font-size: 0.78rem;
        }
        .gallery-page-header h1 {
            font-size: 1.5rem;
        }
        .accordion-title {
            font-size: 0.9rem;
            padding: 14px 16px;
        }
        .accordion-content {
            padding: 0 16px 14px;
            font-size: 0.85rem;
        }
    }

/* roulang page: category7 */
:root {
            --color-bg-base: #F5F1EA;
            --color-bg-dark: #1E1430;
            --color-bg-darker: #150E26;
            --color-surface: #FFFFFF;
            --color-surface-dark: #2A1E42;
            --color-primary: #3A2560;
            --color-primary-hover: #4D3378;
            --color-accent: #D4A853;
            --color-accent-hover: #E0B96A;
            --color-secondary: #C2456E;
            --color-text-main: #241B38;
            --color-text-muted: #6E6480;
            --color-text-on-dark: #F2EDE4;
            --color-text-on-dark-muted: #A89DB8;
            --color-border: #E2DCD2;
            --color-border-dark: #3A2C58;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --radius-img: 8px;
            --shadow-light: 0 2px 12px rgba(30, 20, 48, 0.06), 0 8px 28px rgba(30, 20, 48, 0.05);
            --shadow-light-hover: 0 4px 20px rgba(30, 20, 48, 0.12), 0 12px 36px rgba(30, 20, 48, 0.08);
            --shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.3);
            --shadow-dark-hover: 0 8px 28px rgba(0, 0, 0, 0.45);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-en: "Inter", "Roboto", "SF Pro Display", sans-serif;
            --section-pad-desktop: 88px;
            --section-pad-mobile: 56px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            box-sizing: border-box;
        }

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

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text-main);
            background-color: var(--color-bg-base);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }

        button,
        input,
        textarea,
        select {
            font-family: var(--font-cn);
        }

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

        /* Header & Navigation */
        .site-header {
            background: var(--color-bg-dark);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: box-shadow 0.3s ease, background-color 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
            background-color: rgba(30, 20, 48, 0.97);
        }

        .nav-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: var(--color-accent);
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-bg-dark);
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-search {
            flex: 1;
            max-width: 320px;
            min-width: 160px;
        }

        .nav-search input {
            width: 100%;
            padding: 10px 18px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-text-on-dark);
            font-size: 0.9rem;
            outline: none;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .nav-search input::placeholder {
            color: rgba(242, 237, 228, 0.55);
            font-size: 0.85rem;
        }

        .nav-search input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.18);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.9rem;
            line-height: 1.4;
            cursor: pointer;
            border: none;
            transition: all 0.25s ease;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-accent {
            background: var(--color-accent);
            color: var(--color-bg-dark);
        }

        .btn-accent:hover {
            background: var(--color-accent-hover);
            color: var(--color-bg-dark);
            transform: translateY(-1px);
        }

        .btn-accent:active {
            transform: translateY(1px);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(242, 237, 228, 0.5);
            color: var(--color-text-on-dark);
        }

        .btn-outline-light:hover {
            background: rgba(242, 237, 228, 0.08);
            color: var(--color-accent);
            border-color: var(--color-accent);
        }

        .btn-outline-dark {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }

        .btn-outline-dark:hover {
            background: rgba(58, 37, 96, 0.08);
            color: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.82rem;
        }

        .btn-lg {
            padding: 14px 36px;
            font-size: 1.05rem;
            border-radius: 10px;
        }

        .btn-link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.88rem;
            background: none;
            border: none;
            padding: 0;
            cursor: pointer;
            transition: gap 0.2s ease, color 0.2s ease;
        }

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

        .btn-link-arrow .fa-arrow-right {
            font-size: 0.75rem;
            transition: transform 0.2s ease;
        }

        .btn-link-arrow:hover .fa-arrow-right {
            transform: translateX(3px);
        }

        .nav-channels {
            padding: 10px 0;
        }

        .channel-tabs {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
            -webkit-overflow-scrolling: touch;
        }

        .channel-tabs::-webkit-scrollbar {
            height: 3px;
        }

        .channel-tabs::-webkit-scrollbar-track {
            background: transparent;
        }

        .channel-tabs::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 999px;
        }

        .channel-tabs li {
            flex-shrink: 0;
        }

        .channel-tabs a {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text-on-dark-muted);
            white-space: nowrap;
            transition: all 0.25s ease;
        }

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

        .channel-tabs a.active {
            background: var(--color-accent);
            color: var(--color-bg-dark);
            font-weight: 700;
        }

        .channel-tabs a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }

        /* Hero Section - Category 7 Full-width */
        .hero-cat7 {
            position: relative;
            min-height: 62vh;
            display: flex;
            align-items: center;
            background: var(--color-bg-dark);
            padding: 72px 0 64px;
            overflow: hidden;
        }

        .hero-cat7::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 1;
        }

        .hero-cat7::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(212, 168, 83, 0.12) 0%, transparent 55%), radial-gradient(ellipse at 75% 40%, rgba(30, 20, 48, 0.7) 0%, transparent 60%);
            z-index: 2;
            pointer-events: none;
        }

        .hero-cat7 .container {
            position: relative;
            z-index: 3;
        }

        .hero-cat7-content {
            max-width: 720px;
        }

        .hero-cat7 .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-secondary);
            color: #fff;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }

        .hero-cat7 h1 {
            font-size: clamp(2rem, 4.5vw, 3.2rem);
            font-weight: 700;
            line-height: 1.22;
            color: var(--color-text-on-dark);
            margin: 0 0 16px;
        }

        .hero-cat7 .hero-sub {
            font-size: 1.05rem;
            line-height: 1.75;
            color: var(--color-text-on-dark-muted);
            margin: 0 0 28px;
            max-width: 560px;
        }

        .hero-cat7-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-cat7-meta {
            display: flex;
            gap: 28px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .hero-cat7-meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-text-on-dark-muted);
            font-size: 0.85rem;
        }

        .hero-cat7-meta-item .meta-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--color-accent);
            font-family: var(--font-en);
        }

        /* Section Base */
        .section {
            padding: var(--section-pad-desktop) 0;
        }

        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }

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

        .section-surface {
            background: #FDFBF7;
        }

        .section-gray {
            background: #EDE8DF;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text-main);
            margin: 0 0 12px;
        }

        .section-dark .section-title {
            color: var(--color-text-on-dark);
        }

        .section-sub {
            font-size: 0.98rem;
            line-height: 1.75;
            color: var(--color-text-muted);
            margin: 0 0 36px;
            max-width: 680px;
        }

        .section-dark .section-sub {
            color: var(--color-text-on-dark-muted);
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header-center {
            text-align: center;
        }

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

        /* Topic Entry Cards */
        .topic-entry-list {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .topic-entry-card {
            display: grid;
            grid-template-columns: 1fr 1.4fr;
            background: var(--color-surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-light);
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid var(--color-border);
        }

        .topic-entry-card:hover {
            box-shadow: var(--shadow-light-hover);
            transform: translateY(-2px);
        }

        .topic-entry-card .entry-img {
            position: relative;
            min-height: 240px;
            overflow: hidden;
            background: #E8E2D8;
        }

        .topic-entry-card .entry-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .topic-entry-card .entry-img .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, transparent 40%, rgba(30, 20, 48, 0.55) 100%);
            pointer-events: none;
        }

        .topic-entry-card .entry-img .img-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--color-secondary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 0.72rem;
            font-weight: 600;
            z-index: 2;
        }

        .topic-entry-card .entry-body {
            padding: 28px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 14px;
        }

        .topic-entry-card .entry-body h2 {
            font-size: 1.35rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-text-main);
            margin: 0;
        }

        .topic-entry-card .entry-body .entry-desc {
            font-size: 0.92rem;
            line-height: 1.75;
            color: var(--color-text-muted);
            margin: 0;
        }

        .topic-entry-card .entry-body .entry-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 4px;
        }

        .topic-entry-card .entry-body .entry-tag {
            display: inline-flex;
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(58, 37, 96, 0.08);
            color: var(--color-primary);
        }

        .topic-entry-card .entry-body .entry-cta-row {
            margin-top: 8px;
            display: flex;
            align-items: center;
            gap: 14px;
        }

        /* Deep Content Blocks */
        .deep-content-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .deep-content-block {
            background: var(--color-surface-dark);
            border-radius: var(--radius-card);
            padding: 32px;
            border: 1px solid var(--color-border-dark);
            box-shadow: var(--shadow-dark);
            transition: all 0.3s ease;
        }

        .deep-content-block:hover {
            box-shadow: var(--shadow-dark-hover);
            border-color: rgba(212, 168, 83, 0.25);
        }

        .deep-content-block .block-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(212, 168, 83, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .deep-content-block .block-icon i {
            font-size: 1.2rem;
            color: var(--color-accent);
        }

        .deep-content-block h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 12px;
            line-height: 1.4;
        }

        .deep-content-block p {
            font-size: 0.92rem;
            line-height: 1.8;
            color: var(--color-text-on-dark-muted);
            margin: 0 0 14px;
        }

        .deep-content-block p:last-child {
            margin-bottom: 0;
        }

        /* Brand Intro */
        .brand-intro {
            background: var(--color-bg-dark);
            border-radius: var(--radius-card);
            padding: 40px 44px;
            color: var(--color-text-on-dark);
        }

        .brand-intro h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-accent);
            margin: 0 0 16px;
        }

        .brand-intro p {
            font-size: 0.95rem;
            line-height: 1.85;
            color: var(--color-text-on-dark-muted);
            margin: 0 0 12px;
        }

        .brand-intro p:last-child {
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            overflow: hidden;
            transition: all 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(58, 37, 96, 0.25);
            box-shadow: var(--shadow-light);
        }

        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            gap: 16px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text-main);
            transition: color 0.2s ease;
            user-select: none;
        }

        .faq-question:hover {
            color: var(--color-primary-hover);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 1rem;
            color: var(--color-accent);
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            font-size: 0.9rem;
            line-height: 1.75;
            color: var(--color-text-muted);
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* CTA */
        .cta-section {
            position: relative;
            background: var(--color-bg-dark);
            padding: 72px 0;
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 60%, rgba(212, 168, 83, 0.1) 0%, transparent 55%);
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin: 0 0 12px;
        }

        .cta-section p {
            font-size: 0.98rem;
            color: var(--color-text-on-dark-muted);
            margin: 0 0 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        .cta-section .cta-hint {
            font-size: 0.8rem;
            color: var(--color-text-on-dark-muted);
            margin-top: 18px;
            opacity: 0.75;
        }

        /* Footer */
        .site-footer-seo {
            background: var(--color-bg-darker);
            color: var(--color-text-on-dark-muted);
            padding: 56px 0 28px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--color-accent);
            margin: 0 0 14px;
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--color-text-on-dark-muted);
            padding: 5px 0;
            transition: color 0.2s ease;
        }

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

        .footer-bottom {
            padding-top: 22px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
        }

        .footer-bottom a {
            color: var(--color-text-on-dark-muted);
            font-size: 0.8rem;
        }

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

        .footer-sep {
            margin: 0 6px;
            opacity: 0.4;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .topic-entry-card {
                grid-template-columns: 1fr 1.2fr;
            }

            .topic-entry-card .entry-body {
                padding: 24px;
            }

            .deep-content-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

        @media (max-width: 768px) {
            :root {
                --section-pad-desktop: 64px;
            }

            .nav-top {
                flex-wrap: wrap;
                row-gap: 10px;
            }

            .nav-search {
                order: 3;
                max-width: 100%;
                flex-basis: 100%;
            }

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

            .channel-tabs a {
                padding: 6px 13px;
                font-size: 0.78rem;
            }

            .hero-cat7 {
                min-height: 50vh;
                padding: 52px 0;
            }

            .topic-entry-card {
                grid-template-columns: 1fr;
            }

            .topic-entry-card .entry-img {
                min-height: 200px;
                aspect-ratio: 16/9;
            }

            .topic-entry-card .entry-body {
                padding: 22px;
            }

            .brand-intro {
                padding: 28px 22px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-pad-desktop: 48px;
            }

            .container {
                padding: 0 16px;
            }

            .brand-logo {
                font-size: 1.1rem;
            }

            .brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.95rem;
            }

            .hero-cat7 h1 {
                font-size: 1.7rem;
            }

            .hero-cat7 .hero-sub {
                font-size: 0.92rem;
            }

            .hero-cat7-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-cat7-actions .btn {
                width: 100%;
            }

            .hero-cat7-meta {
                gap: 16px;
            }

            .hero-cat7-meta-item .meta-num {
                font-size: 1.3rem;
            }

            .topic-entry-card .entry-body h2 {
                font-size: 1.15rem;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .cta-section {
                padding: 52px 0;
            }
        }