/* roulang page: index */
/* ============ 设计变量 ============ */
        :root {
            --color-primary: #1a1a2e;
            --color-primary-light: #252545;
            --color-accent: #c9a96e;
            --color-accent-hover: #b8904f;
            --color-accent-light: #e8d5b0;
            --color-bg: #faf9f6;
            --color-bg-alt: #f0ede6;
            --color-bg-dark: #1a1a2e;
            --color-bg-card: #ffffff;
            --color-text: #2d2d2d;
            --color-text-light: #6b6b6b;
            --color-text-lighter: #999999;
            --color-text-inverse: #f5f5f0;
            --color-border: #e5e3dd;
            --color-border-light: #f0efe9;
            --color-success: #4a9c6c;
            --color-warning: #d4a44a;
            --color-danger: #c4554d;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-card: 0 2px 12px rgba(0,0,0,0.05), 0 6px 24px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 4px 20px rgba(0,0,0,0.08), 0 10px 36px rgba(0,0,0,0.06);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-serif: 'Georgia', 'Noto Serif SC', 'STSong', 'SimSun', serif;
            --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1260px;
            --header-height: 72px;
            --section-gap: 80px;
            --section-gap-sm: 48px;
        }

        /* ============ 基础 Reset ============ */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        ul, ol {
            list-style: none;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-primary);
        }

        /* ============ 容器 ============ */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }
        .container-narrow {
            max-width: 900px;
        }
        .container-wide {
            max-width: 1380px;
        }

        /* ============ Header / 导航 ============ */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }
        .header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
            height: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-accent) 0%, #d4b87a 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 900;
            flex-shrink: 0;
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-accent);
            background: rgba(201,169,110,0.06);
        }
        .nav-link.active {
            color: var(--color-accent);
            background: rgba(201,169,110,0.1);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 3px;
        }
        .nav-mega-trigger {
            position: relative;
        }
        .nav-mega-trigger .nav-link {
            cursor: pointer;
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: 28px 32px;
            min-width: 560px;
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition-base);
            pointer-events: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            z-index: 1001;
        }
        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(4px);
            pointer-events: auto;
        }
        .mega-panel::before {
            content: '';
            position: absolute;
            top: -12px;
            left: 0;
            right: 0;
            height: 12px;
            background: transparent;
        }
        .mega-col h4 {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-text-lighter);
            margin-bottom: 14px;
            font-weight: 700;
        }
        .mega-col .mega-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text);
        }
        .mega-col .mega-item:hover {
            background: var(--color-bg-alt);
            color: var(--color-accent);
        }
        .mega-col .mega-item .mega-thumb {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-search {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-light);
            transition: all var(--transition-fast);
            font-size: 1.05rem;
        }
        .btn-search:hover {
            background: var(--color-bg-alt);
            color: var(--color-accent);
        }
        .btn-nav-cta {
            padding: 10px 22px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-nav-cta:hover {
            background: var(--color-accent-hover);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            z-index: 1002;
            border-radius: var(--radius-sm);
        }
        .mobile-toggle span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        #mobile-menu-check {
            display: none;
        }

        /* ============ Hero 首屏 ============ */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--color-bg-dark);
            margin-top: 0;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.55;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26,26,46,0.75) 0%, rgba(26,26,46,0.55) 40%, rgba(26,26,46,0.8) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 720px;
            padding: 80px 0;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201,169,110,0.2);
            border: 1px solid rgba(201,169,110,0.35);
            color: var(--color-accent-light);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-tag .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.4); }
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: #fff;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
        }
        .hero h1 .highlight {
            color: var(--color-accent);
        }
        .hero-desc {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.78);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 560px;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(201,169,110,0.3);
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 6px 24px rgba(201,169,110,0.4);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.4);
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-base);
        }
        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-stat {
            color: #fff;
        }
        .hero-stat .stat-num {
            font-size: 2rem;
            font-weight: 900;
            color: var(--color-accent);
            letter-spacing: -0.02em;
        }
        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.65);
            margin-top: 2px;
        }

        /* ============ 板块通用 ============ */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-sm {
            padding: var(--section-gap-sm) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-inverse);
        }
        .section-dark h2,
        .section-dark h3 {
            color: #fff;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .section-header .section-subtitle {
            color: var(--color-text-light);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto;
        }
        .section-dark .section-subtitle {
            color: rgba(255,255,255,0.6);
        }
        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            font-weight: 700;
            margin-bottom: 8px;
        }

        /* ============ 特色卡片网格 ============ */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-xs);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.5rem;
            color: #fff;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
        }
        .feature-card:nth-child(2) .feature-icon {
            background: linear-gradient(135deg, #c9a96e 0%, #d4b87a 100%);
        }
        .feature-card:nth-child(3) .feature-icon {
            background: linear-gradient(135deg, #3a7d5c 0%, #4a9c6c 100%);
        }
        .feature-card:nth-child(4) .feature-icon {
            background: linear-gradient(135deg, #5c4a7d 0%, #7b5ea7 100%);
        }
        .feature-card h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--color-primary);
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.55;
        }

        /* ============ 分类入口卡片 ============ */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 4 / 3;
            background: var(--color-bg-alt);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            align-items: flex-end;
        }
        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .category-card:hover img {
            transform: scale(1.06);
        }
        .category-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26,26,46,0.1) 0%, rgba(26,26,46,0.55) 50%, rgba(26,26,46,0.88) 100%);
            z-index: 1;
        }
        .category-card-body {
            position: relative;
            z-index: 2;
            padding: 28px 24px;
            width: 100%;
        }
        .category-card-body h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 6px;
        }
        .category-card-body p {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.75);
            line-height: 1.4;
        }
        .category-card-body .cat-arrow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.2);
            color: #fff;
            margin-top: 12px;
            transition: all var(--transition-fast);
        }
        .category-card:hover .cat-arrow {
            background: var(--color-accent);
        }

        /* ============ 资讯列表 ============ */
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .news-card {
            display: flex;
            gap: 18px;
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 18px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            box-shadow: var(--shadow-xs);
            align-items: center;
        }
        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: transparent;
        }
        .news-card-thumb {
            width: 120px;
            height: 90px;
            border-radius: var(--radius-md);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }
        .news-card-body {
            flex: 1;
            min-width: 0;
        }
        .news-card-body .news-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--color-accent);
            background: rgba(201,169,110,0.1);
            padding: 4px 10px;
            border-radius: 50px;
            margin-bottom: 6px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }
        .news-card-body h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
            line-height: 1.35;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            color: var(--color-primary);
        }
        .news-card-body .news-meta {
            font-size: 0.8rem;
            color: var(--color-text-lighter);
        }
        .news-card:hover h4 {
            color: var(--color-accent);
        }
        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--color-text-light);
            font-size: 1rem;
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--color-border);
        }

        /* ============ 精选推荐 ============ */
        .featured-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 24px;
        }
        .featured-main {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--color-bg-alt);
        }
        .featured-main img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .featured-main:hover img {
            transform: scale(1.04);
        }
        .featured-main::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(26,26,46,0.85) 100%);
            z-index: 1;
        }
        .featured-main-body {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 2;
            padding: 32px 28px;
        }
        .featured-main-body .feat-tag {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            padding: 5px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }
        .featured-main-body h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 6px;
        }
        .featured-main-body p {
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        .featured-side {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .featured-side-card {
            flex: 1;
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            background: var(--color-bg-alt);
        }
        .featured-side-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .featured-side-card:hover img {
            transform: scale(1.04);
        }
        .featured-side-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(26,26,46,0.8) 100%);
            z-index: 1;
        }
        .featured-side-body {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 2;
            padding: 20px 18px;
        }
        .featured-side-body h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
        }

        /* ============ 数据展示 ============ */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stats-card {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-lg);
            padding: 36px 20px;
            transition: all var(--transition-base);
        }
        .stats-card:hover {
            background: rgba(255,255,255,0.1);
            border-color: rgba(201,169,110,0.3);
            transform: translateY(-2px);
        }
        .stats-card .stat-icon {
            font-size: 2rem;
            color: var(--color-accent);
            margin-bottom: 12px;
        }
        .stats-card .stat-value {
            font-size: 2.5rem;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .stats-card .stat-desc {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            margin-top: 4px;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 22px 0;
            transition: all var(--transition-fast);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }
        .faq-item summary {
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            color: var(--color-primary);
            transition: color var(--transition-fast);
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--color-accent);
        }
        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            transition: all var(--transition-fast);
        }
        .faq-item[open] summary .faq-icon {
            background: var(--color-accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            margin-top: 12px;
            color: var(--color-text-light);
            line-height: 1.65;
            font-size: 0.95rem;
            padding-left: 4px;
        }

        /* ============ CTA ============ */
        .cta-section {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            padding: 64px 40px;
            text-align: center;
            background: var(--color-bg-dark);
        }
        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .cta-section .cta-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.35;
        }
        .cta-section .cta-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26,26,46,0.7);
        }
        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 900;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-content p {
            color: rgba(255,255,255,0.7);
            margin-bottom: 28px;
            font-size: 1.05rem;
        }

        /* ============ Footer ============ */
        .footer {
            background: var(--color-primary);
            color: rgba(255,255,255,0.65);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.6;
            color: rgba(255,255,255,0.5);
        }
        .footer-col h4 {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 700;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            padding: 6px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 56px;
                --section-gap-sm: 36px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .featured-side {
                flex-direction: row;
            }
            .featured-side-card {
                aspect-ratio: 16 / 9;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero h1 {
                font-size: 2.4rem;
            }
            .hero {
                min-height: 480px;
            }
            .hero-content {
                padding: 56px 0;
            }
            .mega-panel {
                min-width: 400px;
                padding: 20px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
                --section-gap: 44px;
                --section-gap-sm: 28px;
            }
            .container {
                padding: 0 18px;
            }
            .header-inner {
                padding: 0 18px;
            }
            .nav-main {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--color-bg-card);
                flex-direction: column;
                align-items: stretch;
                padding: 20px;
                gap: 4px;
                transform: translateX(100%);
                transition: transform var(--transition-base);
                z-index: 999;
                overflow-y: auto;
                box-shadow: var(--shadow-lg);
            }
            #mobile-menu-check:checked ~ .nav-main {
                transform: translateX(0);
            }
            .mobile-toggle {
                display: flex;
            }
            .mega-panel {
                position: static;
                transform: none;
                opacity: 1;
                visibility: visible;
                pointer-events: auto;
                min-width: auto;
                box-shadow: none;
                border: none;
                padding: 10px 0 0 16px;
                grid-template-columns: 1fr;
                display: none;
            }
            .nav-mega-trigger:hover .mega-panel,
            .nav-mega-trigger:focus-within .mega-panel {
                display: grid;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .featured-side {
                flex-direction: column;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 32px;
            }
            .hero-stat .stat-num {
                font-size: 1.5rem;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .btn-nav-cta {
                display: none;
            }
            .header-actions .btn-nav-cta {
                display: inline-flex;
                padding: 8px 18px;
                font-size: 0.82rem;
            }
            .cta-section {
                padding: 44px 24px;
                border-radius: var(--radius-lg);
            }
            .cta-content h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero {
                min-height: 400px;
            }
            .hero-content {
                padding: 40px 0;
            }
            .hero-btns {
                flex-direction: column;
            }
            .hero-btns .btn-primary,
            .hero-btns .btn-outline-light {
                justify-content: center;
                text-align: center;
            }
            .hero-stats {
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .news-card {
                flex-direction: column;
                align-items: stretch;
            }
            .news-card-thumb {
                width: 100%;
                height: 160px;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .featured-main {
                aspect-ratio: 4 / 3;
            }
        }

        /* ============ 辅助 ============ */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            border: 0;
        }
        .text-accent {
            color: var(--color-accent);
        }

/* roulang page: article */
:root {
            --primary: #1e3a8a;
            --primary-light: #2563eb;
            --primary-dark: #1e2d5f;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --bg: #f8fafc;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-light: #475569;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
            --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
            --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
            --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.06);
            --max-width: 1200px;
            --gap: 1.5rem;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
            line-height: 1.7;
            background: var(--bg);
            color: var(--text);
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; }
        img { max-width: 100%; height: auto; display: block; }
        button { cursor: pointer; font-family: inherit; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }
        /* 导航 */
        .header-main {
            background: #fff;
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
        }
        .nav-main { display: flex; align-items: center; gap: 0.5rem; }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            color: var(--text-light);
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .nav-link:hover { background: var(--border-light); color: var(--primary); }
        .nav-link.active { background: var(--primary); color: #fff; }
        .nav-mega-trigger { position: relative; }
        .mega-panel {
            position: absolute;
            top: calc(100% + 8px);
            left: 50%;
            transform: translateX(-50%);
            background: #fff;
            box-shadow: var(--shadow-lg);
            border-radius: var(--radius);
            padding: 1.5rem;
            display: none;
            width: 480px;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            border: 1px solid var(--border);
        }
        .nav-mega-trigger:hover .mega-panel { display: grid; }
        .mega-col h4 {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: var(--text-muted);
            margin-bottom: 0.8rem;
        }
        .mega-item {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.5rem 0;
            border-radius: var(--radius-sm);
            transition: background 0.1s;
            font-size: 0.9rem;
            color: var(--text);
        }
        .mega-item:hover { background: var(--border-light); }
        .mega-thumb { width: 36px; height: 36px; border-radius: 4px; object-fit: cover; }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 0.5rem;
        }
        /* 文章 banner */
        .article-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 3rem 0 2rem;
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .article-hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 1.5rem;
            text-align: center;
            color: #fff;
        }
        .article-category {
            display: inline-block;
            background: var(--accent);
            color: #1e293b;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            margin-bottom: 1rem;
            letter-spacing: 0.3px;
        }
        .article-hero h1 {
            font-size: 2.2rem;
            line-height: 1.3;
            margin-bottom: 1rem;
            font-weight: 700;
        }
        .article-meta {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.8);
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .article-meta span i { margin-right: 4px; }
        /* 主体 */
        .article-layout {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 1.5rem 3rem;
        }
        .article-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 2rem 2.5rem;
            margin-top: -2rem;
            position: relative;
            z-index: 5;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--text);
        }
        .article-body h2 { font-size: 1.6rem; margin: 2rem 0 1rem; color: var(--primary); }
        .article-body h3 { font-size: 1.3rem; margin: 1.5rem 0 0.8rem; }
        .article-body p { margin-bottom: 1.2rem; }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 0.8rem 1.5rem;
            margin: 1.5rem 0;
            background: #fffbeb;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #92400e;
        }
        .not-found {
            text-align: center;
            padding: 3rem 1rem;
        }
        .btn-home {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 0.7rem 2rem;
            border-radius: var(--radius);
            font-weight: 500;
            margin-top: 1rem;
            transition: background 0.2s;
        }
        .btn-home:hover { background: var(--primary-light); }
        /* 推荐 */
        .related-section {
            max-width: var(--max-width);
            margin: 2rem auto 3rem;
            padding: 0 1.5rem;
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--text);
        }
        .grid-3 { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
        .content-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: transform 0.2s, box-shadow 0.2s;
            overflow: hidden;
        }
        .content-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .content-card-img { height: 180px; background: #e2e8f0; }
        .content-card-img img { width: 100%; height: 100%; object-fit: cover; }
        .content-card-body { padding: 1.2rem; }
        .content-card-body h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
        .content-card-body p { font-size: 0.9rem; color: var(--text-light); }
        .content-card-meta { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.8rem; }
        /* FAQ & CTA */
        .faq-section {
            background: var(--border-light);
            padding: 3rem 0;
        }
        .faq-item { background: #fff; border-radius: var(--radius); padding: 1.5rem; margin-bottom: 1rem; box-shadow: var(--shadow-sm); }
        .faq-question { font-weight: 600; margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.5rem; }
        .cta-section {
            background: var(--primary);
            color: #fff;
            text-align: center;
            padding: 3rem 1.5rem;
        }
        .cta-section h2 { font-size: 2rem; margin-bottom: 0.5rem; }
        .btn-accent {
            background: var(--accent);
            color: #1e293b;
            padding: 0.8rem 2.5rem;
            border-radius: 30px;
            font-weight: 600;
            border: none;
            display: inline-block;
            margin-top: 1.5rem;
            transition: background 0.2s;
        }
        .btn-accent:hover { background: var(--accent-hover); }
        /* 页脚 */
        .footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 3rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            max-width: var(--max-width);
            margin: 0 auto 2rem;
            padding: 0 1.5rem;
        }
        .footer-logo { font-size: 1.5rem; font-weight: 700; color: #fff; margin-bottom: 0.5rem; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.5; }
        .footer-col h4 { color: #fff; margin-bottom: 0.8rem; font-size: 0.95rem; }
        .footer-col a { display: block; font-size: 0.9rem; padding: 0.3rem 0; transition: color 0.2s; }
        .footer-col a:hover { color: var(--accent); }
        .footer-bottom {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.85rem;
            color: #94a3b8;
        }
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .header-inner { position: relative; }
            .mobile-menu-btn { display: block; }
            .nav-main {
                display: none;
                position: absolute;
                top: 100%;
                left: 0; right: 0;
                background: #fff;
                flex-direction: column;
                padding: 1rem;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--border);
            }
            .nav-main.open { display: flex; }
            .mega-panel { display: none !important; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-card { padding: 1.5rem; margin-top: -1rem; }
            .grid-3 { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1e1b2e;
            --color-primary-light: #2d2847;
            --color-accent: #c9a96e;
            --color-accent-hover: #b8934f;
            --color-accent-light: #f0e6d3;
            --color-emphasis: #d4583a;
            --color-emphasis-hover: #b8452a;
            --color-bg: #faf8f5;
            --color-bg-alt: #f3efe8;
            --color-white: #ffffff;
            --color-text: #2c2c2c;
            --color-text-strong: #1a1a1a;
            --color-text-weak: #6b6b6b;
            --color-text-muted: #999999;
            --color-border: #e8e3db;
            --color-border-light: #f0ece6;
            --color-tag-bg: #f5f1ea;
            --color-tag-text: #8b7355;
            --color-success: #4a9c6c;
            --color-star: #e8b84b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-card-hover: 0 12px 36px rgba(0, 0, 0, 0.13);
            --font-heading: 'Georgia', 'Noto Serif SC', 'STSong', 'SimSun', 'Songti SC', serif;
            --font-body: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Menlo', 'Consolas', monospace;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
            --max-width: 1240px;
            --max-width-narrow: 860px;
            --header-height: 68px;
            --section-gap: 72px;
            --section-gap-sm: 48px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            letter-spacing: 0.01em;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.35;
            color: var(--color-text-strong);
            font-weight: 700;
        }

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

        .container-narrow {
            width: 100%;
            max-width: var(--max-width-narrow);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER ========== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }

        .header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .logo {
            font-family: var(--font-heading);
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition-fast);
        }

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

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

        .nav-main {
            display: flex;
            align-items: center;
            gap: 4px;
            position: relative;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-link:hover {
            color: var(--color-accent);
            background: var(--color-accent-light);
        }

        .nav-link.active {
            color: var(--color-accent);
            font-weight: 600;
            background: var(--color-accent-light);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2.5px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        /* Mega Menu */
        .nav-mega-trigger {
            position: relative;
        }

        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: 20px 24px;
            display: flex;
            gap: 28px;
            min-width: 520px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all var(--transition-base);
            border: 1px solid var(--color-border-light);
            z-index: 999;
        }

        .nav-mega-trigger:hover .mega-panel,
        .nav-mega-trigger:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translateX(-50%) translateY(4px);
        }

        .mega-col {
            flex: 1;
            min-width: 0;
        }

        .mega-col h4 {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-text-weak);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--color-border-light);
            font-weight: 600;
        }

        .mega-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 9px 10px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            font-size: 0.9rem;
            color: var(--color-text);
            margin-bottom: 4px;
        }

        .mega-item:hover {
            background: var(--color-bg-alt);
            color: var(--color-accent);
        }

        .mega-thumb {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            border: 1px solid var(--color-border-light);
        }

        .mega-item span {
            font-weight: 500;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            z-index: 1001;
        }

        .menu-toggle:hover {
            background: var(--color-bg-alt);
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Mobile nav overlay */
        .nav-mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.45);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .nav-mobile-overlay.show {
            opacity: 1;
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            background: var(--color-primary) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 64px 0 56px;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 27, 46, 0.88) 0%, rgba(30, 27, 46, 0.72) 100%);
            z-index: 1;
        }

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

        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-fast);
        }

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

        .banner-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.7rem;
        }

        .page-banner h1 {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .page-banner .banner-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            line-height: 1.6;
        }

        .banner-stats {
            display: flex;
            gap: 32px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .banner-stat {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.9rem;
        }

        .banner-stat i {
            color: var(--color-accent);
            font-size: 1rem;
        }

        .banner-stat strong {
            color: #ffffff;
            font-size: 1.15rem;
        }

        /* ========== MAIN LAYOUT ========== */
        .main-content {
            flex: 1;
            padding: var(--section-gap) 0;
        }

        .content-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

        /* ========== FILTER BAR ========== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--color-border-light);
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 500;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-light);
        }

        .filter-tag.active-filter {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
            font-weight: 600;
        }

        .filter-count {
            font-size: 0.75rem;
            background: rgba(0, 0, 0, 0.08);
            padding: 2px 8px;
            border-radius: 10px;
            font-weight: 500;
        }

        .filter-tag.active-filter .filter-count {
            background: rgba(255, 255, 255, 0.25);
        }

        /* ========== ARTICLE CARDS ========== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-bottom: 36px;
        }

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

        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }

        .article-card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--color-bg-alt);
        }

        .article-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

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

        .article-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--color-emphasis);
            color: #fff;
            z-index: 2;
            letter-spacing: 0.02em;
        }

        .article-card-badge.featured {
            background: var(--color-accent);
            color: #fff;
        }

        .article-card-body {
            padding: 16px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--color-text-weak);
            margin-bottom: 8px;
        }

        .article-card-meta .meta-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--color-border);
        }

        .article-card-title {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .article-card:hover .article-card-title {
            color: var(--color-accent);
        }

        .article-card-excerpt {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
            flex: 1;
        }

        .article-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .article-card-tag {
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 12px;
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .article-card-tag:hover {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }

        .article-card-footer-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 10px;
            border-top: 1px solid var(--color-border-light);
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        .article-card-read {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.82rem;
            transition: gap var(--transition-fast);
        }

        .article-card:hover .article-card-read {
            gap: 8px;
        }

        /* ========== PAGINATION ========== */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 10px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid var(--color-border-light);
            background: var(--color-white);
            color: var(--color-text);
        }

        .pagination a:hover {
            background: var(--color-accent-light);
            border-color: var(--color-accent);
            color: var(--color-accent);
        }

        .pagination .current {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
            font-weight: 700;
        }

        .pagination .dots {
            border: none;
            background: transparent;
            color: var(--color-text-muted);
            min-width: auto;
            padding: 0 4px;
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-widget {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 22px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
        }

        .sidebar-widget h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--color-accent-light);
            position: relative;
        }

        .sidebar-widget h3::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 36px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 1px;
        }

        .sidebar-post-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            border-radius: var(--radius-sm);
            padding: 8px;
            margin: 0 -8px;
        }

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

        .sidebar-post-item:hover {
            background: var(--color-bg-alt);
        }

        .sidebar-post-thumb {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            border: 1px solid var(--color-border-light);
        }

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

        .sidebar-post-title {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--color-text-strong);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .sidebar-post-item:hover .sidebar-post-title {
            color: var(--color-accent);
        }

        .sidebar-post-date {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

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

        .tag-cloud a {
            padding: 6px 14px;
            border-radius: 16px;
            font-size: 0.82rem;
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

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

        .sidebar-newsletter {
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 24px 22px;
            text-align: center;
            border: none;
        }

        .sidebar-newsletter h3 {
            color: #fff;
            border-bottom-color: rgba(255, 255, 255, 0.2);
            font-size: 1rem;
        }

        .sidebar-newsletter h3::after {
            background: var(--color-accent);
        }

        .sidebar-newsletter p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 14px;
            line-height: 1.5;
        }

        .sidebar-newsletter input {
            width: 100%;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 0.88rem;
            margin-bottom: 10px;
            transition: border-color var(--transition-fast);
        }

        .sidebar-newsletter input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .sidebar-newsletter input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.15);
        }

        .sidebar-newsletter button {
            width: 100%;
            padding: 10px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .sidebar-newsletter button:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
        }

        /* ========== FEATURED SECTION ========== */
        .section-featured {
            padding: var(--section-gap) 0;
            background: var(--color-bg-alt);
        }

        .section-header {
            margin-bottom: 36px;
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 6px;
        }

        .section-header .section-line {
            display: inline-block;
            width: 48px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        .featured-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .featured-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

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

        .featured-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

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

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

        .featured-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text-strong);
            transition: color var(--transition-fast);
        }

        .featured-card:hover .featured-card-body h3 {
            color: var(--color-accent);
        }

        .featured-card-body p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
        }

        .featured-card-meta {
            display: flex;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        /* ========== FAQ ========== */
        .section-faq {
            padding: var(--section-gap) 0;
        }

        .faq-list {
            max-width: 780px;
        }

        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-strong);
            text-align: left;
            transition: color var(--transition-fast);
            gap: 12px;
        }

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

        .faq-question i {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 0.92rem;
            color: var(--color-text-weak);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .section-cta {
            padding: var(--section-gap) 0;
            background: var(--color-primary);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .section-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

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

        .section-cta h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .section-cta p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            box-shadow: 0 4px 18px rgba(201, 169, 110, 0.35);
        }

        .btn-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(201, 169, 110, 0.45);
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 52px 0 24px;
            margin-top: auto;
        }

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

        .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            transition: all var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--color-accent);
            padding-left: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 18px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1100px) {
            .content-layout {
                grid-template-columns: 1fr 280px;
                gap: 28px;
            }

            .article-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 900px) {
            .content-layout {
                grid-template-columns: 1fr;
            }

            .sidebar {
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .sidebar-newsletter {
                grid-column: 1 / -1;
            }

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

            .article-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .page-banner h1 {
                font-size: 2rem;
            }

            .mega-panel {
                min-width: auto;
                width: 320px;
                flex-direction: column;
                gap: 16px;
                left: auto;
                right: 0;
                transform: translateY(8px);
            }

            .nav-mega-trigger:hover .mega-panel,
            .nav-mega-trigger:focus-within .mega-panel {
                transform: translateY(4px);
            }

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

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            .nav-main {
                position: fixed;
                top: 0;
                right: -320px;
                width: 300px;
                height: 100vh;
                background: var(--color-white);
                flex-direction: column;
                padding: 80px 24px 32px;
                gap: 6px;
                box-shadow: var(--shadow-xl);
                transition: right var(--transition-base);
                z-index: 999;
                overflow-y: auto;
                align-items: stretch;
            }

            .nav-main.mobile-open {
                right: 0;
            }

            .nav-mobile-overlay {
                display: block;
                pointer-events: none;
            }

            .nav-mobile-overlay.show {
                pointer-events: auto;
            }

            .nav-link {
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }

            .mega-panel {
                position: static;
                transform: none;
                box-shadow: none;
                border: none;
                padding: 8px 0 8px 16px;
                min-width: auto;
                width: 100%;
                opacity: 1;
                visibility: visible;
                pointer-events: auto;
                display: none;
                background: var(--color-bg-alt);
                border-radius: var(--radius-sm);
                margin-top: 4px;
            }

            .nav-mega-trigger.open-mobile .mega-panel {
                display: flex;
                flex-direction: column;
            }

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

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

            .page-banner {
                padding: 40px 0 36px;
            }

            .page-banner h1 {
                font-size: 1.7rem;
            }

            .banner-stats {
                gap: 16px;
            }

            .filter-bar {
                gap: 6px;
            }

            .filter-tag {
                font-size: 0.8rem;
                padding: 6px 12px;
            }

            .section-header h2 {
                font-size: 1.45rem;
            }

            .section-cta h2 {
                font-size: 1.5rem;
            }

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

            .content-layout {
                gap: 24px;
            }

            :root {
                --section-gap: 48px;
                --section-gap-sm: 32px;
            }
        }

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

            .header-inner {
                padding: 0 16px;
            }

            .logo {
                font-size: 1.2rem;
            }

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

            .page-banner h1 {
                font-size: 1.45rem;
            }

            .page-banner .banner-subtitle {
                font-size: 0.9rem;
            }

            .article-card-body {
                padding: 12px 14px 14px;
            }

            .article-card-title {
                font-size: 0.95rem;
            }

            .featured-card-body {
                padding: 14px 16px 16px;
            }

            .featured-card-body h3 {
                font-size: 1rem;
            }

            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }

            .faq-answer-inner {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }

            .pagination a,
            .pagination span {
                min-width: 32px;
                height: 32px;
                font-size: 0.8rem;
            }

            .btn-cta {
                padding: 12px 24px;
                font-size: 0.9rem;
            }

            .banner-stats {
                flex-direction: column;
                gap: 8px;
            }

            :root {
                --section-gap: 40px;
                --section-gap-sm: 28px;
            }
        }