/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --primary: #6C5CE7;
            --primary-dark: #5A4BD1;
            --primary-light: #8B7DF0;
            --accent: #FF9F43;
            --accent-dark: #F08820;
            --accent-light: #FFB870;
            --deep: #2D1B69;
            --bg: #F8F7FC;
            --bg-alt: #F0EEF8;
            --surface: #FFFFFF;
            --text: #1E1B2E;
            --text-secondary: #7B7890;
            --text-muted: #A9A6BB;
            --border: #E8E6F0;
            --border-light: #F2F0F8;
            --success: #00D2A0;
            --success-light: #E6FBF6;
            --warning: #FFD166;
            --danger: #EF476F;
            --shadow-sm: 0 2px 8px rgba(108,92,231,0.06), 0 1px 3px rgba(0,0,0,0.04);
            --shadow-md: 0 6px 20px rgba(108,92,231,0.10), 0 2px 8px rgba(0,0,0,0.05);
            --shadow-lg: 0 16px 40px rgba(108,92,231,0.14), 0 4px 16px rgba(0,0,0,0.07);
            --shadow-glow: 0 8px 32px rgba(108,92,231,0.22), 0 0 0 1px rgba(108,92,231,0.08);
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --radius-full: 9999px;
            --space-xs: 6px;
            --space-sm: 12px;
            --space-md: 20px;
            --space-lg: 32px;
            --space-xl: 48px;
            --space-2xl: 64px;
            --space-3xl: 88px;
            --font-xs: 0.75rem;
            --font-sm: 0.875rem;
            --font-base: 1rem;
            --font-md: 1.125rem;
            --font-lg: 1.375rem;
            --font-xl: 1.75rem;
            --font-2xl: 2.25rem;
            --font-3xl: 3rem;
            --font-4xl: 3.75rem;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        /* ========== 基础重置 ========== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: var(--font-base);
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
            min-height: 100vh;
        }
        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 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }

        /* ========== 容器 ========== */
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 var(--space-md);
        }
        @media (min-width: 1440px) {
            .container { max-width: 1320px; }
        }

        /* ========== 页头 / 导航面板 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 8px rgba(108,92,231,0.04);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-sm) 0;
            gap: var(--space-md);
            min-height: 62px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            font-size: var(--font-lg);
            font-weight: 800;
            color: var(--deep);
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }
        .logo-link .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: var(--font-md);
            box-shadow: 0 4px 14px rgba(108,92,231,0.30);
        }
        .logo-link .logo-text {
            background: linear-gradient(135deg, var(--deep), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        /* 卡片化导航面板 */
        .nav-panel {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            background: var(--bg-alt);
            border-radius: var(--radius-full);
            padding: 5px 6px;
            border: 1px solid var(--border);
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: var(--radius-full);
            font-size: var(--font-sm);
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
        }
        .nav-item:hover {
            color: var(--primary);
            background: rgba(108,92,231,0.06);
        }
        .nav-item.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 3px 12px rgba(108,92,231,0.28);
        }
        .nav-item .nav-icon {
            font-size: 0.9em;
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            flex-shrink: 0;
        }
        .btn-nav-cta {
            padding: 10px 22px;
            border-radius: var(--radius-full);
            font-size: var(--font-sm);
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            box-shadow: 0 4px 15px rgba(255,159,67,0.35);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,159,67,0.45);
        }
        .btn-nav-cta:active {
            transform: translateY(0);
        }
        .mobile-menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: var(--bg-alt);
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--text);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-menu-toggle:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        @media (max-width: 768px) {
            .nav-panel {
                position: fixed;
                top: 72px;
                left: 16px;
                right: 16px;
                flex-direction: column;
                border-radius: var(--radius-lg);
                padding: var(--space-sm);
                background: #fff;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--border);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-12px);
                transition: all var(--transition-base);
                z-index: 999;
            }
            .nav-panel.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }
            .nav-item {
                width: 100%;
                justify-content: center;
                padding: 12px 18px;
                border-radius: var(--radius-sm);
            }
            .mobile-menu-toggle { display: flex; }
            .header-cta .btn-nav-cta { display: none; }
            .header-cta .btn-nav-cta.mobile-visible { display: inline-flex; }
        }
        @media (max-width: 520px) {
            .header-inner { min-height: 54px; }
            .logo-link { font-size: var(--font-base); }
            .logo-link .logo-icon { width: 34px; height: 34px; font-size: var(--font-sm); }
            .nav-panel { top: 62px; left: 8px; right: 8px; }
        }

        /* ========== 首屏 Hero ========== */
        .hero {
            position: relative;
            padding: var(--space-3xl) 0 var(--space-2xl);
            background: linear-gradient(170deg, #F8F7FC 0%, #EDEAF7 30%, #E2DEF5 60%, #F8F7FC 100%);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -180px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(108,92,231,0.10) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255,159,67,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-bg-img {
            position: absolute;
            top: 0;
            right: 0;
            width: 48%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.55;
            mask-image: linear-gradient(to left, rgba(0,0,0,0.7) 30%, rgba(0,0,0,0) 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.7) 30%, rgba(0,0,0,0) 100%);
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-2xl);
            align-items: center;
        }
        .hero-content {
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            align-self: flex-start;
            padding: 7px 16px;
            border-radius: var(--radius-full);
            background: rgba(108,92,231,0.10);
            color: var(--primary-dark);
            font-size: var(--font-xs);
            font-weight: 700;
            letter-spacing: 0.02em;
            border: 1px solid rgba(108,92,231,0.18);
        }
        .hero-badge .badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.6); }
        }
        .hero-title {
            font-size: var(--font-4xl);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: var(--deep);
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--primary), #A855F7);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: var(--font-md);
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 480px;
        }
        .hero-actions {
            display: flex;
            gap: var(--space-sm);
            flex-wrap: wrap;
        }
        .btn-primary {
            padding: 14px 30px;
            border-radius: var(--radius-full);
            font-size: var(--font-base);
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(108,92,231,0.32);
        }
        .btn-primary:active {
            transform: translateY(-1px);
        }
        .btn-outline {
            padding: 14px 30px;
            border-radius: var(--radius-full);
            font-size: var(--font-base);
            font-weight: 700;
            color: var(--primary);
            background: transparent;
            border: 2px solid var(--primary);
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline:hover {
            background: rgba(108,92,231,0.06);
            border-color: var(--primary-dark);
            transform: translateY(-3px);
        }
        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            z-index: 3;
        }
        .hero-card-cluster {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-md);
            width: 100%;
            max-width: 440px;
        }
        .hero-mini-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--space-md);
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            text-align: center;
            border: 1px solid var(--border-light);
        }
        .hero-mini-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .hero-mini-card .mini-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            margin: 0 auto var(--space-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
        }
        .mini-icon.purple { background: rgba(108,92,231,0.12); color: var(--primary); }
        .mini-icon.orange { background: rgba(255,159,67,0.12); color: var(--accent); }
        .mini-icon.green { background: rgba(0,210,160,0.12); color: var(--success); }
        .mini-icon.blue { background: rgba(59,130,246,0.12); color: #3B82F6; }
        .hero-mini-card .mini-label {
            font-size: var(--font-xs);
            font-weight: 700;
            color: var(--text);
        }
        .hero-mini-card .mini-num {
            font-size: var(--font-xl);
            font-weight: 900;
            color: var(--deep);
        }
        @media (max-width: 1024px) {
            .hero-title { font-size: var(--font-3xl); }
            .hero .container { gap: var(--space-xl); }
        }
        @media (max-width: 768px) {
            .hero { padding: var(--space-2xl) 0 var(--space-xl); }
            .hero .container { grid-template-columns: 1fr; gap: var(--space-xl); }
            .hero-bg-img { width: 100%; opacity: 0.3; mask-image: linear-gradient(to bottom, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0) 100%); -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0) 100%); }
            .hero-title { font-size: var(--font-2xl); }
            .hero-desc { font-size: var(--font-base); max-width: 100%; }
            .hero-card-cluster { max-width: 100%; }
            .hero-visual { order: -1; }
        }
        @media (max-width: 520px) {
            .hero-title { font-size: var(--font-xl); }
            .hero-card-cluster { gap: var(--space-sm); }
            .hero-mini-card { padding: var(--space-sm); }
            .hero-mini-card .mini-icon { width: 38px; height: 38px; font-size: 1.1rem; }
            .hero-mini-card .mini-num { font-size: var(--font-lg); }
            .btn-primary, .btn-outline { padding: 12px 22px; font-size: var(--font-sm); }
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: var(--space-2xl) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--space-xl);
        }
        .section-header .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            background: rgba(108,92,231,0.08);
            color: var(--primary);
            font-size: var(--font-xs);
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: var(--space-sm);
            text-transform: uppercase;
        }
        .section-title {
            font-size: var(--font-2xl);
            font-weight: 900;
            color: var(--deep);
            margin-bottom: var(--space-xs);
            letter-spacing: -0.01em;
        }
        .section-desc {
            font-size: var(--font-base);
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.8;
        }
        @media (max-width: 768px) {
            .section-title { font-size: var(--font-xl); }
            .section { padding: var(--space-xl) 0; }
        }

        /* ========== 特色卡片板块 ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--space-lg) var(--space-md);
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .feature-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-card:hover::after {
            opacity: 1;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            margin: 0 auto var(--space-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            background: rgba(108,92,231,0.08);
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: var(--font-base);
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--deep);
        }
        .feature-card p {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; }
            .feature-card { padding: var(--space-md); }
        }

        /* ========== 分类入口面板 ========== */
        .categories-panel {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: var(--space-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
        }
        .categories-panel .panel-title {
            font-size: var(--font-lg);
            font-weight: 800;
            color: var(--deep);
            margin-bottom: var(--space-md);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .categories-panel .panel-title::before {
            content: '';
            width: 4px;
            height: 24px;
            border-radius: 2px;
            background: var(--primary);
        }
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 16 / 10;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            min-height: 180px;
        }
        .category-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .category-card:hover img {
            transform: scale(1.08);
        }
        .category-card .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(45,27,105,0.85) 0%, rgba(45,27,105,0.2) 60%, rgba(45,27,105,0.02) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: var(--space-md);
            transition: all var(--transition-base);
        }
        .category-card:hover .cat-overlay {
            background: linear-gradient(to top, rgba(45,27,105,0.92) 0%, rgba(45,27,105,0.3) 55%, rgba(45,27,105,0.04) 100%);
        }
        .cat-overlay .cat-name {
            font-size: var(--font-md);
            font-weight: 800;
            color: #fff;
            margin-bottom: 2px;
            letter-spacing: 0.01em;
        }
        .cat-overlay .cat-desc {
            font-size: var(--font-xs);
            color: rgba(255,255,255,0.8);
        }
        .cat-overlay .cat-arrow {
            position: absolute;
            top: var(--space-md);
            right: var(--space-md);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(255,255,255,0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.8rem;
            transition: all var(--transition-fast);
        }
        .category-card:hover .cat-arrow {
            background: var(--accent);
            transform: translateX(3px);
        }
        @media (max-width: 768px) {
            .categories-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            .categories-grid { grid-template-columns: 1fr; }
            .category-card { aspect-ratio: 16 / 9; min-height: 150px; }
            .categories-panel { padding: var(--space-md); }
        }

        /* ========== 最新资讯列表 ========== */
        .news-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--space-sm);
            max-width: 820px;
            margin: 0 auto;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: var(--space-md);
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--space-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
            transform: translateX(4px);
        }
        .news-item .news-thumb {
            width: 72px;
            height: 56px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-alt);
        }
        .news-item .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-title {
            font-weight: 700;
            font-size: var(--font-base);
            color: var(--text);
            margin-bottom: 3px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-item .news-meta {
            font-size: var(--font-xs);
            color: var(--text-muted);
            display: flex;
            gap: var(--space-sm);
            align-items: center;
        }
        .news-item .news-arrow {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }
        .news-item:hover .news-arrow {
            background: var(--primary);
            color: #fff;
        }
        .news-empty {
            text-align: center;
            padding: var(--space-xl);
            color: var(--text-muted);
            font-size: var(--font-base);
        }
        @media (max-width: 520px) {
            .news-item { padding: var(--space-sm); gap: var(--space-sm); }
            .news-item .news-thumb { width: 52px; height: 42px; }
            .news-item .news-title { font-size: var(--font-sm); }
        }

        /* ========== 数据统计面板 ========== */
        .stats-panel {
            background: linear-gradient(135deg, var(--deep), #3D2280);
            border-radius: var(--radius-xl);
            padding: var(--space-xl) var(--space-lg);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
            text-align: center;
            box-shadow: var(--shadow-lg);
        }
        .stat-item {
            color: #fff;
        }
        .stat-num {
            font-size: var(--font-3xl);
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-num .stat-suffix {
            font-size: var(--font-lg);
            font-weight: 600;
            color: var(--accent-light);
        }
        .stat-label {
            font-size: var(--font-sm);
            color: rgba(255,255,255,0.7);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-panel { grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); }
            .stat-num { font-size: var(--font-2xl); }
        }
        @media (max-width: 520px) {
            .stats-panel { grid-template-columns: 1fr 1fr; padding: var(--space-lg) var(--space-md); }
            .stat-num { font-size: var(--font-xl); }
        }

        /* ========== 热门推荐 ========== */
        .trending-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }
        .trending-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .trending-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .trending-card .trending-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }
        .trending-card .trending-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .trending-card:hover .trending-img-wrap img {
            transform: scale(1.06);
        }
        .trending-card .trending-badge {
            position: absolute;
            top: var(--space-sm);
            left: var(--space-sm);
            padding: 4px 12px;
            border-radius: var(--radius-full);
            background: var(--accent);
            color: #fff;
            font-size: var(--font-xs);
            font-weight: 700;
        }
        .trending-card .trending-body {
            padding: var(--space-md);
        }
        .trending-card .trending-body h4 {
            font-size: var(--font-base);
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--deep);
        }
        .trending-card .trending-body p {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            line-height: 1.5;
        }
        @media (max-width: 1024px) {
            .trending-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .trending-grid { grid-template-columns: 1fr; }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            padding: var(--space-md);
            font-weight: 700;
            font-size: var(--font-base);
            color: var(--text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-sm);
            user-select: none;
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
            color: var(--text-muted);
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
        }
        .faq-answer-inner {
            padding: 0 var(--space-md) var(--space-md);
            font-size: var(--font-sm);
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, #F0EEF8, #E8E4F6);
            border-radius: var(--radius-xl);
            padding: var(--space-2xl) var(--space-lg);
            text-align: center;
            position: relative;
            overflow: hidden;
            margin: 0 var(--space-md);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(108,92,231,0.14) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section .cta-title {
            font-size: var(--font-2xl);
            font-weight: 900;
            color: var(--deep);
            margin-bottom: var(--space-sm);
        }
        .cta-section .cta-desc {
            font-size: var(--font-base);
            color: var(--text-secondary);
            margin-bottom: var(--space-md);
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-large {
            padding: 16px 36px;
            border-radius: var(--radius-full);
            font-size: var(--font-md);
            font-weight: 800;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), #7C3AED);
            box-shadow: 0 8px 28px rgba(108,92,231,0.35);
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-cta-large:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(108,92,231,0.45);
        }
        @media (max-width: 768px) {
            .cta-section { margin: 0 var(--space-sm); padding: var(--space-xl) var(--space-md); }
            .cta-section .cta-title { font-size: var(--font-xl); }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--border-light);
            padding: var(--space-xl) 0 var(--space-md);
            margin-top: var(--space-2xl);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--space-xl);
            margin-bottom: var(--space-lg);
        }
        .footer-brand .footer-logo {
            font-size: var(--font-lg);
            font-weight: 800;
            color: var(--deep);
            margin-bottom: var(--space-sm);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-brand .footer-logo .fl-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-xs);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: var(--font-sm);
        }
        .footer-brand p {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-links h5 {
            font-size: var(--font-sm);
            font-weight: 700;
            color: var(--deep);
            margin-bottom: var(--space-sm);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links ul li a {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-links ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            text-align: center;
            padding-top: var(--space-md);
            border-top: 1px solid var(--border-light);
            font-size: var(--font-xs);
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
            .footer-brand p { max-width: 100%; }
        }

        /* ========== 辅助工具类 ========== */
        .text-center { text-align: center; }
        .mt-sm { margin-top: var(--space-sm); }
        .mt-md { margin-top: var(--space-md); }
        .mt-lg { margin-top: var(--space-lg); }
        .bg-white { background: #fff; }
        .bg-alt { background: var(--bg-alt); }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

        /* ========== 焦点状态 ========== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid rgba(108,92,231,0.4);
            outline-offset: 3px;
            border-radius: 4px;
        }

/* roulang page: article */
:root {
            --color-primary: #6C5CE7;
            --color-primary-dark: #5A4BD1;
            --color-primary-light: #A29BFE;
            --color-primary-soft: #EDEAFC;
            --color-accent: #FDCB6E;
            --color-accent-dark: #E8B845;
            --color-accent-light: #FFF3D6;
            --color-gradient-start: #6C5CE7;
            --color-gradient-mid: #8B7CF0;
            --color-gradient-end: #A29BFE;
            --bg-page: #F6F4FC;
            --bg-card: #FFFFFF;
            --bg-nav: #FFFFFF;
            --bg-footer: #1E1B2E;
            --text-primary: #2D2438;
            --text-secondary: #5C5470;
            --text-muted: #9C93B0;
            --text-on-dark: #E8E3F0;
            --text-on-primary: #FFFFFF;
            --border: #E8E4F2;
            --border-light: #F2EFF8;
            --shadow-xs: 0 1px 3px rgba(108,92,231,0.06);
            --shadow-sm: 0 2px 10px rgba(108,92,231,0.08);
            --shadow-md: 0 6px 24px rgba(108,92,231,0.12);
            --shadow-lg: 0 12px 40px rgba(108,92,231,0.16);
            --shadow-xl: 0 20px 60px rgba(108,92,231,0.2);
            --shadow-glow: 0 0 30px rgba(108,92,231,0.18);
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 999px;
            --font-heading: 'PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;
            --font-body: 'PingFang SC','Microsoft YaHei','Segoe UI',sans-serif;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        *,
        *::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-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-page);
            background-image:
                radial-gradient(ellipse at 15% 20%, rgba(108,92,231,0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 85% 70%, rgba(253,203,110,0.05) 0%, transparent 60%),
                radial-gradient(ellipse at 50% 40%, rgba(162,155,254,0.03) 0%, transparent 70%);
            min-height: 100vh;
        }

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

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

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

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

        .container-narrow {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== HEADER & NAV ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 14px 0;
            background: transparent;
            transition: background var(--transition-normal), box-shadow var(--transition-normal);
        }

        .site-header.scrolled {
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
            transition: transform var(--transition-fast);
        }

        .logo-link:hover {
            transform: scale(1.03);
        }

        .logo-icon-wrap {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-mid));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.15rem;
            box-shadow: var(--shadow-sm);
            flex-shrink: 0;
        }

        .nav-panel {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-nav);
            border-radius: var(--radius-lg);
            padding: 6px 8px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            flex-wrap: wrap;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 9px 16px;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
            position: relative;
        }

        .nav-item:hover {
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }

        .nav-item.active {
            color: #fff;
            background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-mid));
            box-shadow: var(--shadow-sm);
        }

        .nav-item .nav-icon {
            font-size: 0.85rem;
            width: 20px;
            text-align: center;
            flex-shrink: 0;
        }

        .nav-cta {
            margin-left: 8px;
            padding: 9px 20px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            color: #3D2E00;
            font-weight: 700;
            font-size: 0.88rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 8px rgba(253,203,110,0.35);
            white-space: nowrap;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(253,203,110,0.5);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-xs);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--color-primary-soft);
        }

        /* ===== ARTICLE BANNER ===== */
        .article-banner {
            position: relative;
            background: linear-gradient(160deg, #2D2438 0%, #3B2E54 30%, #4A3B6B 60%, #352A50 100%);
            background-image:
                linear-gradient(160deg, rgba(45,36,56,0.95) 0%, rgba(59,46,84,0.9) 30%, rgba(74,59,107,0.85) 60%, rgba(53,42,80,0.92) 100%),
                url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(253,203,110,0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .article-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(162,155,254,0.2) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(255,255,255,0.8);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .sep {
            font-size: 0.7rem;
            color: rgba(255,255,255,0.5);
        }

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

        .article-banner .category-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            background: rgba(253,203,110,0.2);
            color: var(--color-accent);
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(253,203,110,0.3);
        }

        .article-banner h1 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.35;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .article-meta-top {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.7);
        }

        .article-meta-top span {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .article-meta-top i {
            font-size: 0.8rem;
            color: rgba(253,203,110,0.9);
        }

        /* ===== MAIN CONTENT ===== */
        .article-main {
            padding: 40px 0 60px;
            position: relative;
        }

        .article-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 40px 44px;
            border: 1px solid var(--border);
            position: relative;
            margin-top: -30px;
            z-index: 5;
        }

        .article-cover {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }

        .article-cover img {
            width: 100%;
            border-radius: var(--radius-md);
        }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-primary);
        }

        .article-body h2 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 36px 0 16px;
            padding-left: 16px;
            border-left: 4px solid var(--color-primary);
            line-height: 1.4;
        }

        .article-body h3 {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 28px 0 12px;
        }

        .article-body p {
            margin-bottom: 16px;
            color: var(--text-secondary);
        }

        .article-body ul,
        .article-body ol {
            margin: 16px 0;
            padding-left: 24px;
            color: var(--text-secondary);
        }

        .article-body li {
            margin-bottom: 8px;
        }

        .article-body strong {
            color: var(--text-primary);
        }

        .article-body blockquote {
            margin: 24px 0;
            padding: 18px 22px;
            background: var(--color-primary-soft);
            border-radius: var(--radius-sm);
            border-left: 4px solid var(--color-primary-light);
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-body img {
            border-radius: var(--radius-sm);
            margin: 20px 0;
        }

        .article-divider {
            border: none;
            border-top: 1px solid var(--border);
            margin: 36px 0;
        }

        .article-tags-row {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }

        .article-tags-row .tag-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        .tag-pill {
            display: inline-block;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            background: var(--color-primary-soft);
            color: var(--color-primary-dark);
            font-size: 0.82rem;
            font-weight: 600;
            transition: all var(--transition-fast);
        }

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

        /* ===== NOT FOUND STATE ===== */
        .not-found-card {
            text-align: center;
            padding: 60px 30px;
        }

        .not-found-icon {
            font-size: 4rem;
            color: var(--color-primary-light);
            margin-bottom: 20px;
        }

        .not-found-card h2 {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .not-found-card p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-mid));
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }

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

        /* ===== RELATED POSTS ===== */
        .related-section {
            padding: 50px 0 70px;
        }

        .section-heading {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-primary);
            text-align: center;
            margin-bottom: 8px;
        }

        .section-subheading {
            font-size: 0.95rem;
            color: var(--text-muted);
            text-align: center;
            margin-bottom: 36px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-primary-light);
        }

        .related-card-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-primary-soft);
            position: relative;
        }

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

        .related-card:hover .related-card-img img {
            transform: scale(1.06);
        }

        .related-card-body {
            padding: 16px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .related-card-cat {
            font-size: 0.73rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
        }

        .related-card-title {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card:hover .related-card-title {
            color: var(--color-primary-dark);
        }

        .related-card-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: auto;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            padding: 50px 0 60px;
        }

        .cta-card {
            background: linear-gradient(145deg, #2D2438 0%, #3B2E54 40%, #4A3B6B 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(162,155,254,0.25);
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(253,203,110,0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: -30px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(162,155,254,0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-card>* {
            position: relative;
            z-index: 2;
        }

        .cta-card h3 {
            font-family: var(--font-heading);
            font-size: 1.7rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-card p {
            color: rgba(255,255,255,0.75);
            margin-bottom: 28px;
            font-size: 1rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            color: #3D2E00;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 22px rgba(253,203,110,0.4);
            transition: all var(--transition-fast);
        }

        .btn-cta-glow:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(253,203,110,0.55);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--bg-footer);
            color: var(--text-on-dark);
            padding: 48px 0 24px;
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-primary-light));
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }

        .fl-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-mid));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(232,227,240,0.7);
            line-height: 1.6;
        }

        .footer-links h5 {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 0.88rem;
            color: rgba(232,227,240,0.7);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(232,227,240,0.12);
            padding-top: 18px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(232,227,240,0.5);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .article-banner h1 {
                font-size: 1.65rem;
            }
            .article-card {
                padding: 28px 28px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .nav-cta {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 10px;
            }
            .nav-panel {
                order: 3;
                width: 100%;
                justify-content: center;
                gap: 4px;
                padding: 5px 6px;
            }
            .nav-item {
                padding: 8px 12px;
                font-size: 0.82rem;
                gap: 5px;
            }
            .nav-item .nav-icon {
                font-size: 0.75rem;
                width: 16px;
            }
            .article-banner {
                padding: 36px 0 32px;
            }
            .article-banner h1 {
                font-size: 1.4rem;
            }
            .article-card {
                padding: 20px 18px;
                margin-top: -20px;
                border-radius: var(--radius-md);
            }
            .article-body {
                font-size: 0.98rem;
            }
            .article-body h2 {
                font-size: 1.25rem;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .related-card-body {
                padding: 12px 14px;
            }
            .related-card-title {
                font-size: 0.85rem;
            }
            .cta-card {
                padding: 32px 20px;
            }
            .cta-card h3 {
                font-size: 1.35rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .section-heading {
                font-size: 1.35rem;
            }
            .container {
                padding: 0 16px;
            }
            .container-narrow {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .logo-link {
                font-size: 1.05rem;
            }
            .logo-icon-wrap {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
            }
            .nav-panel {
                gap: 2px;
                border-radius: var(--radius-md);
                padding: 4px 4px;
            }
            .nav-item {
                padding: 7px 10px;
                font-size: 0.76rem;
                border-radius: var(--radius-sm);
                gap: 3px;
            }
            .nav-item .nav-icon {
                font-size: 0.7rem;
                width: 14px;
            }
            .article-banner h1 {
                font-size: 1.2rem;
            }
            .article-card {
                padding: 16px 14px;
                border-radius: var(--radius-sm);
                margin-top: -16px;
            }
            .article-body {
                font-size: 0.92rem;
                line-height: 1.75;
            }
            .article-body h2 {
                font-size: 1.15rem;
                margin: 24px 0 12px;
                padding-left: 12px;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .related-card-title {
                font-size: 0.78rem;
            }
            .related-card-cat {
                font-size: 0.68rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .cta-card h3 {
                font-size: 1.2rem;
            }
            .btn-cta-glow {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #5B6ABF;
            --color-primary-light: #7C6FF7;
            --color-primary-dark: #3D4A9E;
            --color-accent: #F0A050;
            --color-accent-light: #F8C080;
            --color-accent-dark: #D48830;
            --color-bg: #F0F2F8;
            --color-bg-alt: #E8EAF5;
            --color-surface: #FFFFFF;
            --color-surface-alt: #FAFBFF;
            --color-text: #2D3047;
            --color-text-strong: #1A1D30;
            --color-text-weak: #7B7F9E;
            --color-text-muted: #A0A4C0;
            --color-border: #E2E4F0;
            --color-border-light: #EEF0F7;
            --color-nav-bg: #1E2240;
            --color-nav-surface: #272B50;
            --color-nav-active: #3D4A9E;
            --color-nav-text: #C8CAE0;
            --color-nav-text-active: #FFFFFF;
            --color-tag-bg: #EEF0FB;
            --color-tag-text: #5B6ABF;
            --color-success: #4CAF84;
            --color-warning: #F0A050;
            --color-danger: #E85D6F;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 999px;
            --shadow-xs: 0 1px 3px rgba(30, 34, 64, 0.04);
            --shadow-sm: 0 2px 8px rgba(30, 34, 64, 0.06);
            --shadow-md: 0 4px 16px rgba(30, 34, 64, 0.08);
            --shadow-lg: 0 8px 30px rgba(30, 34, 64, 0.10);
            --shadow-xl: 0 12px 40px rgba(30, 34, 64, 0.14);
            --shadow-card-hover: 0 8px 28px rgba(30, 34, 64, 0.12), 0 2px 8px rgba(30, 34, 64, 0.06);
            --transition-fast: 0.15s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
            --max-width: 1200px;
            --max-width-narrow: 960px;
            --header-height: 72px;
            --nav-panel-height: 80px;
            --spacing-xs: 6px;
            --spacing-sm: 12px;
            --spacing-md: 20px;
            --spacing-lg: 32px;
            --spacing-xl: 48px;
            --spacing-2xl: 64px;
            --spacing-3xl: 80px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a:hover {
            color: var(--color-primary-light);
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--color-text-strong);
            line-height: 1.3;
            font-weight: 700;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }

        .container-narrow {
            max-width: var(--max-width-narrow);
        }

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

        /* ========== HEADER & NAV ========== */
        .site-header {
            background: var(--color-nav-bg);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(30, 34, 64, 0.18);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: var(--spacing-lg);
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.02em;
        }

        .header-logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
            font-size: 1.2rem;
            color: #FFFFFF;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: #FFFFFF;
            opacity: 0.9;
        }

        /* 卡片化导航面板 */
        .nav-panel {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--color-nav-surface);
            border-radius: var(--radius-lg);
            padding: 5px;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 10px 18px;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-nav-text);
            transition: all var(--transition-normal);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.01em;
        }

        .nav-item .nav-icon {
            font-size: 0.85rem;
            width: 20px;
            text-align: center;
            flex-shrink: 0;
        }

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

        .nav-item.active {
            color: var(--color-nav-text-active);
            background: var(--color-nav-active);
            box-shadow: 0 2px 8px rgba(61, 74, 158, 0.4);
        }

        .nav-item.active:hover {
            background: var(--color-primary-dark);
        }

        .nav-cta {
            margin-left: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-size: 0.85rem;
            font-weight: 700;
            color: #FFFFFF;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            transition: all var(--transition-normal);
            white-space: nowrap;
            letter-spacing: 0.02em;
            box-shadow: 0 2px 10px rgba(240, 160, 80, 0.3);
        }

        .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(240, 160, 80, 0.45);
            color: #FFFFFF;
            background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            color: #FFFFFF;
            font-size: 1.3rem;
            background: var(--color-nav-surface);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            padding: var(--spacing-md) 0;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--color-text-weak);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--color-text-muted);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: var(--color-text-strong);
            font-weight: 600;
        }

        /* ========== CATEGORY BANNER ========== */
        .category-banner {
            position: relative;
            padding: var(--spacing-3xl) 0;
            background: linear-gradient(160deg, #1E2240 0%, #2D3058 40%, #3A3E6A 100%);
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: center;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.22;
            mix-blend-mode: overlay;
            pointer-events: none;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: linear-gradient(to top, rgba(30, 34, 64, 0.7), transparent);
            pointer-events: none;
        }

        .category-banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-accent-light);
            border: 1px solid rgba(255, 255, 255, 0.15);
            margin-bottom: var(--spacing-md);
        }

        .category-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.02em;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        .category-banner .banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto var(--spacing-lg);
            line-height: 1.6;
        }

        .banner-stats {
            display: flex;
            justify-content: center;
            gap: var(--spacing-xl);
            flex-wrap: wrap;
        }

        .banner-stat {
            text-align: center;
            color: #FFFFFF;
        }

        .banner-stat .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-accent-light);
            display: block;
            line-height: 1;
        }

        .banner-stat .stat-label {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
            letter-spacing: 0.02em;
        }

        /* ========== FILTER BAR ========== */
        .filter-section {
            padding: var(--spacing-lg) 0;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: var(--header-height);
            z-index: 100;
        }

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

        .filter-label {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-text-weak);
            letter-spacing: 0.03em;
            flex-shrink: 0;
        }

        .filter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-tag {
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-text-weak);
            background: var(--color-bg-alt);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
        }

        .filter-tag:hover {
            color: var(--color-primary);
            background: var(--color-tag-bg);
            border-color: var(--color-border);
        }

        .filter-tag.active {
            color: #FFFFFF;
            background: var(--color-primary);
            border-color: var(--color-primary);
            box-shadow: 0 2px 8px rgba(91, 106, 191, 0.3);
        }

        .filter-search {
            margin-left: auto;
            position: relative;
            flex-shrink: 0;
            min-width: 220px;
        }

        .filter-search input {
            width: 100%;
            padding: 10px 16px 10px 38px;
            border-radius: var(--radius-full);
            border: 1px solid var(--color-border);
            background: var(--color-bg);
            font-size: 0.85rem;
            color: var(--color-text);
            transition: all var(--transition-fast);
            outline: none;
        }

        .filter-search input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(91, 106, 191, 0.1);
            background: var(--color-surface);
        }

        .filter-search .search-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--color-text-muted);
            font-size: 0.85rem;
            pointer-events: none;
        }

        /* ========== MAIN CONTENT ========== */
        .main-content {
            flex: 1;
            padding: var(--spacing-xl) 0 var(--spacing-2xl);
        }

        .content-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: var(--spacing-xl);
            align-items: start;
        }

        /* ========== ARTICLE GRID ========== */
        .articles-section {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
        }

        .articles-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .articles-header h2 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-text-strong);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .articles-header h2 .count-badge {
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            background: var(--color-tag-bg);
            color: var(--color-primary);
        }

        .sort-select {
            padding: 8px 14px;
            border-radius: var(--radius-full);
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            font-size: 0.82rem;
            color: var(--color-text);
            cursor: pointer;
            outline: none;
            transition: border-color var(--transition-fast);
        }

        .sort-select:focus {
            border-color: var(--color-primary);
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
        }

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

        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border);
        }

        .article-card .card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-bg-alt);
        }

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

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

        .article-card .card-level-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: #FFFFFF;
            background: rgba(30, 34, 64, 0.75);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            z-index: 2;
        }

        .article-card .card-level-badge.beginner {
            background: rgba(76, 175, 132, 0.85);
        }

        .article-card .card-level-badge.advanced {
            background: rgba(91, 106, 191, 0.85);
        }

        .article-card .card-level-badge.hard {
            background: rgba(232, 93, 111, 0.85);
        }

        .article-card .card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .article-card .card-tag-row {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .article-card .card-tag {
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            letter-spacing: 0.02em;
        }

        .article-card .card-tag.hot {
            background: #FFF0E8;
            color: #E87830;
        }

        .article-card .card-tag.new {
            background: #E8F5F0;
            color: #3D8B6E;
        }

        .article-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.45;
            color: var(--color-text-strong);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card h3 a {
            color: inherit;
        }

        .article-card h3 a:hover {
            color: var(--color-primary);
        }

        .article-card .card-excerpt {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            font-size: 0.78rem;
            color: var(--color-text-muted);
            padding-top: 4px;
            border-top: 1px solid var(--color-border-light);
        }

        .article-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
            position: sticky;
            top: calc(var(--header-height) + 80px);
        }

        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }

        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: var(--spacing-md);
            padding-bottom: var(--spacing-sm);
            border-bottom: 2px solid var(--color-border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h4 .side-icon {
            color: var(--color-accent);
            font-size: 0.9rem;
        }

        .hot-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .hot-list-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 8px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }

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

        .hot-list-item:hover {
            padding-left: 4px;
        }

        .hot-list-item .rank {
            width: 26px;
            height: 26px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.75rem;
            flex-shrink: 0;
            color: #FFFFFF;
            background: var(--color-text-muted);
        }

        .hot-list-item:nth-child(1) .rank {
            background: linear-gradient(135deg, #F0A050, #E87830);
        }

        .hot-list-item:nth-child(2) .rank {
            background: linear-gradient(135deg, #8B9DCF, #5B6ABF);
        }

        .hot-list-item:nth-child(3) .rank {
            background: linear-gradient(135deg, #C09070, #A07050);
        }

        .hot-list-item .hot-info {
            flex: 1;
            min-width: 0;
        }

        .hot-list-item .hot-title {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-strong);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }

        .hot-list-item .hot-title a:hover {
            color: var(--color-primary);
        }

        .hot-list-item .hot-views {
            font-size: 0.72rem;
            color: var(--color-text-muted);
            margin-top: 2px;
        }

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

        .tag-cloud .cloud-tag {
            padding: 6px 14px;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--color-bg-alt);
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .tag-cloud .cloud-tag:hover {
            background: var(--color-primary);
            color: #FFFFFF;
            border-color: var(--color-primary);
            box-shadow: 0 2px 8px rgba(91, 106, 191, 0.25);
        }

        /* ========== PAGINATION ========== */
        .pagination-section {
            padding-top: var(--spacing-lg);
        }

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

        .page-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-md);
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--color-text-weak);
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .page-btn:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
            background: var(--color-tag-bg);
        }

        .page-btn.active {
            color: #FFFFFF;
            background: var(--color-primary);
            border-color: var(--color-primary);
            box-shadow: 0 2px 8px rgba(91, 106, 191, 0.3);
            pointer-events: none;
        }

        .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
            cursor: not-allowed;
        }

        .page-dots {
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            color: var(--color-text-muted);
            font-weight: 600;
            letter-spacing: 0.1em;
        }

        /* ========== FAQ SECTION ========== */
        .faq-section {
            padding: var(--spacing-2xl) 0;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }

        .faq-section .section-title {
            text-align: center;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--color-text-strong);
            margin-bottom: var(--spacing-xl);
            letter-spacing: 0.02em;
        }

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-surface-alt);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            cursor: default;
        }

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

        .faq-item .faq-question {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--color-text-strong);
            margin-bottom: 6px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .faq-item .faq-q-icon {
            color: var(--color-primary);
            flex-shrink: 0;
            margin-top: 2px;
            font-size: 0.85rem;
        }

        .faq-item .faq-answer {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            padding-left: 26px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: var(--spacing-2xl) 0;
            background: linear-gradient(160deg, #2D3058 0%, #3A3E6A 60%, #4A5080 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            mix-blend-mode: soft-light;
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 650px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.02em;
        }

        .cta-content p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: var(--spacing-lg);
            line-height: 1.6;
        }

        .cta-buttons {
            display: flex;
            gap: var(--spacing-md);
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-size: 0.95rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
            cursor: pointer;
            text-decoration: none;
        }

        .btn-primary {
            background: var(--color-accent);
            color: #FFFFFF;
            box-shadow: 0 4px 16px rgba(240, 160, 80, 0.35);
        }

        .btn-primary:hover {
            background: var(--color-accent-light);
            box-shadow: 0 6px 22px rgba(240, 160, 80, 0.5);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        .btn-outline {
            background: transparent;
            color: #FFFFFF;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.7);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #181B33;
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
        }

        .footer-brand .fl-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
            font-size: 1rem;
            color: #FFFFFF;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-links h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.03em;
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links ul li a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }

        .footer-links ul li a:hover {
            color: var(--color-accent-light);
        }

        .footer-bottom {
            text-align: center;
            padding-top: var(--spacing-lg);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
            letter-spacing: 0.02em;
        }

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

            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }

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

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

            .filter-search {
                min-width: 180px;
            }

            .category-banner h1 {
                font-size: 2.2rem;
            }

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

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 60px;
                gap: var(--spacing-sm);
            }

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

            .header-logo .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }

            .nav-panel {
                gap: 3px;
                padding: 4px;
                border-radius: var(--radius-md);
            }

            .nav-item {
                padding: 8px 12px;
                font-size: 0.8rem;
                gap: 5px;
                border-radius: var(--radius-sm);
            }

            .nav-item .nav-icon {
                font-size: 0.75rem;
                width: 16px;
            }

            .nav-cta {
                padding: 8px 14px;
                font-size: 0.78rem;
                margin-left: 4px;
                border-radius: var(--radius-sm);
            }

            .category-banner {
                padding: var(--spacing-xl) 0;
                min-height: 200px;
            }

            .category-banner h1 {
                font-size: 1.8rem;
            }

            .category-banner .banner-desc {
                font-size: 0.9rem;
                max-width: 90%;
            }

            .banner-stats {
                gap: var(--spacing-lg);
            }

            .banner-stat .stat-number {
                font-size: 1.4rem;
            }

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

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

            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }

            .filter-search {
                margin-left: 0;
                width: 100%;
                min-width: unset;
            }

            .filter-tags {
                width: 100%;
            }

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

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

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

            .pagination .page-btn {
                min-width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }

            .breadcrumb {
                font-size: 0.78rem;
            }

            .articles-header h2 {
                font-size: 1.1rem;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 54px;
            }

            .header-logo {
                font-size: 1rem;
                gap: 6px;
            }

            .header-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }

            .nav-panel {
                gap: 2px;
                padding: 3px;
                border-radius: var(--radius-sm);
            }

            .nav-item {
                padding: 6px 9px;
                font-size: 0.73rem;
                gap: 3px;
            }

            .nav-item .nav-icon {
                font-size: 0.7rem;
                width: 14px;
            }

            .nav-cta {
                padding: 6px 10px;
                font-size: 0.7rem;
                margin-left: 2px;
            }

            .category-banner {
                padding: var(--spacing-lg) 0;
                min-height: 160px;
            }

            .category-banner h1 {
                font-size: 1.5rem;
            }

            .category-banner .banner-desc {
                font-size: 0.82rem;
            }

            .banner-stats {
                gap: var(--spacing-md);
            }

            .banner-stat .stat-number {
                font-size: 1.2rem;
            }

            .banner-stat .stat-label {
                font-size: 0.7rem;
            }

            .filter-section {
                padding: var(--spacing-sm) 0;
            }

            .filter-tag {
                padding: 6px 12px;
                font-size: 0.75rem;
            }

            .articles-grid {
                gap: var(--spacing-sm);
            }

            .article-card h3 {
                font-size: 0.95rem;
            }

            .article-card .card-body {
                padding: var(--spacing-sm);
            }

            .cta-content h2 {
                font-size: 1.2rem;
            }

            .btn {
                padding: 10px 20px;
                font-size: 0.85rem;
            }

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

            .faq-item .faq-question {
                font-size: 0.88rem;
            }

            .faq-item .faq-answer {
                font-size: 0.8rem;
            }
        }