/* roulang page: index */
:root {
            --bg-primary: #0d1117;
            --bg-secondary: #131920;
            --bg-card: #18202a;
            --bg-card-hover: #1c2835;
            --bg-nav: #0a0f15;
            --bg-nav-hover: #141d28;
            --bg-nav-active: #182438;
            --text-primary: #e6edf3;
            --text-secondary: #c0c8d2;
            --text-muted: #6e7681;
            --text-weak: #8b949e;
            --accent: #4a9eff;
            --accent-light: #6db5ff;
            --accent-dark: #3584d9;
            --accent-2: #f0883e;
            --accent-2-light: #f5a665;
            --gold: #d4a853;
            --gold-light: #e8c97a;
            --gold-dark: #b8922e;
            --border: #30363d;
            --border-light: #21262d;
            --border-card: #2a3340;
            --success: #3fb950;
            --warning: #d29922;
            --danger: #f85149;
            --radius-xs: 4px;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.35);
            --shadow: 0 4px 14px rgba(0,0,0,0.45);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.55);
            --shadow-gold: 0 0 24px rgba(212,168,83,0.18);
            --shadow-accent: 0 0 20px rgba(74,158,255,0.12);
            --nav-width: 260px;
            --header-mobile-height: 60px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Monaco', monospace;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
            --section-gap: 80px;
            --section-gap-sm: 50px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: row;
            overflow-x: hidden;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-light);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-xs);
        }

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

        button {
            cursor: pointer;
            font-family: var(--font-sans);
            border: none;
            background: none;
            color: inherit;
        }
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-xs);
        }

        input {
            font-family: var(--font-sans);
        }

        ul, ol {
            list-style: none;
        }

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .container-narrow {
            max-width: 900px;
        }

        /* ===== 左侧竖向导航 ===== */
        .nav-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--bg-nav);
            border-right: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .nav-sidebar-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
            padding: 24px 20px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            margin-bottom: 36px;
            padding: 6px 0;
            white-space: nowrap;
            transition: color var(--transition);
        }
        .nav-logo:hover {
            color: var(--accent-light);
        }
        .nav-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 900;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-accent);
        }

        .nav-menu {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .nav-menu a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 16px;
            border-radius: var(--radius);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            position: relative;
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-menu a:hover {
            background: var(--bg-nav-hover);
            color: var(--text-primary);
        }
        .nav-menu a.active {
            background: var(--bg-nav-active);
            color: var(--accent-light);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--accent);
        }
        .nav-menu a .nav-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }

        .nav-divider {
            height: 1px;
            background: var(--border-light);
            margin: 16px 0;
            opacity: 0.6;
        }

        .nav-badge {
            display: inline-block;
            background: var(--accent-2);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            margin-left: auto;
            letter-spacing: 0.3px;
            animation: pulse-badge 2s infinite;
        }
        @keyframes pulse-badge {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.7; }
        }

        .nav-footer {
            margin-top: auto;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }
        .nav-footer-text {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            flex: 1;
            margin-left: var(--nav-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-mobile-height);
            background: var(--bg-nav);
            border-bottom: 1px solid var(--border-light);
            z-index: 999;
            align-items: center;
            padding: 0 20px;
            gap: 12px;
        }
        .mobile-header .mobile-logo {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .mobile-menu-btn {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            margin-left: auto;
            z-index: 1001;
            background: none;
            border: none;
            cursor: pointer;
        }
        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .mobile-menu-btn.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .mobile-menu-btn.open span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-btn.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.6);
            z-index: 998;
        }
        .mobile-overlay.show {
            display: block;
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            padding: 100px 0 90px;
            background: linear-gradient(160deg, #0a1628 0%, #0d1a30 30%, #0f1d35 60%, #0d1117 100%);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(74,158,255,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -15%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(212,168,83,0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-bg-img {
            position: absolute;
            right: 5%;
            top: 50%;
            transform: translateY(-50%);
            width: 420px;
            height: 320px;
            border-radius: var(--radius-lg);
            object-fit: cover;
            opacity: 0.55;
            mask-image: linear-gradient(to left, rgba(0,0,0,0.7) 40%, transparent 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.7) 40%, transparent 100%);
            pointer-events: none;
            z-index: 0;
        }
        .hero-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 50px;
        }
        .hero-text {
            flex: 1;
            max-width: 620px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(74,158,255,0.12);
            border: 1px solid rgba(74,158,255,0.25);
            color: var(--accent-light);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 30px;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
            animation: fadeInUp 0.6s ease forwards;
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin-bottom: 18px;
            animation: fadeInUp 0.6s ease 0.1s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-light), var(--gold-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 500px;
            animation: fadeInUp 0.6s ease 0.2s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            animation: fadeInUp 0.6s ease 0.3s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.3px;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(74,158,255,0.3);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 22px rgba(74,158,255,0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(74,158,255,0.25);
        }
        .btn-outline {
            border-color: var(--border);
            color: var(--text-primary);
            background: transparent;
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent-light);
            background: rgba(74,158,255,0.06);
        }
        .btn-gold {
            background: linear-gradient(135deg, var(--gold), var(--gold-dark));
            color: #1a1a0a;
            box-shadow: var(--shadow-gold);
            font-weight: 700;
        }
        .btn-gold:hover {
            background: linear-gradient(135deg, var(--gold-light), var(--gold));
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(212,168,83,0.35);
            color: #1a1a0a;
        }
        .btn-sm {
            padding: 9px 18px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }
        .btn-lg {
            padding: 16px 34px;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }
        .hero-stats-row {
            display: flex;
            gap: 30px;
            margin-top: 36px;
            flex-wrap: wrap;
            animation: fadeInUp 0.6s ease 0.4s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-value {
            font-size: 2rem;
            font-weight: 900;
            color: var(--gold-light);
            letter-spacing: -1px;
        }
        .hero-stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-sm {
            padding: var(--section-gap-sm) 0;
        }
        .section-dark {
            background: var(--bg-secondary);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--accent-light);
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.3px;
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
        }

        /* ===== 分类入口卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-card);
            transition: all var(--transition);
            cursor: pointer;
            position: relative;
            text-decoration: none;
            display: block;
            color: inherit;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
            background: var(--bg-card-hover);
        }
        .category-card.rare {
            border: 1px solid rgba(212,168,83,0.35);
            box-shadow: var(--shadow-gold);
        }
        .category-card.rare:hover {
            border-color: var(--gold);
            box-shadow: 0 8px 36px rgba(212,168,83,0.28);
        }
        .category-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .category-card-body {
            padding: 20px 22px;
        }
        .category-card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 20px;
            background: rgba(74,158,255,0.12);
            color: var(--accent-light);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .category-card.rare .category-card-tag {
            background: rgba(212,168,83,0.15);
            color: var(--gold-light);
        }
        .category-card-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .category-card-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ===== 内容列表 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-list-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 18px 22px;
            border: 1px solid var(--border-card);
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
            color: inherit;
            align-items: center;
        }
        .content-list-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }
        .content-list-thumb {
            width: 90px;
            height: 70px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .content-list-info {
            flex: 1;
            min-width: 0;
        }
        .content-list-title {
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 4px;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .content-list-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .content-list-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: 12px;
            background: rgba(240,136,62,0.12);
            color: var(--accent-2-light);
        }
        .content-empty {
            text-align: center;
            padding: 40px;
            color: var(--text-muted);
            font-size: 0.95rem;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

        /* ===== 策略清单 / 流程步骤 ===== */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            counter-reset: step-counter;
        }
        .step-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            border: 1px solid var(--border-card);
            position: relative;
            transition: all var(--transition);
            counter-increment: step-counter;
        }
        .step-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            font-weight: 900;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: var(--shadow-accent);
        }
        .step-content h4 {
            font-size: 1.05rem;
            margin-bottom: 4px;
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== 排行表 ===== */
        .ranking-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            background: var(--bg-card);
        }
        .ranking-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }
        .ranking-table th {
            background: var(--bg-secondary);
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.82rem;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            padding: 14px 18px;
            text-align: left;
            border-bottom: 2px solid var(--border);
        }
        .ranking-table td {
            padding: 13px 18px;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.92rem;
            color: var(--text-primary);
        }
        .ranking-table tbody tr {
            transition: background var(--transition-fast);
        }
        .ranking-table tbody tr:hover {
            background: var(--bg-card-hover);
        }
        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            font-weight: 800;
            font-size: 0.85rem;
        }
        .rank-1 { background: linear-gradient(135deg, #ffd700, #ffb800); color: #3d2e00; }
        .rank-2 { background: linear-gradient(135deg, #c0c0c0, #a8a8a8); color: #1a1a1a; }
        .rank-3 { background: linear-gradient(135deg, #cd7f32, #b8702a); color: #fff; }
        .rank-other { background: var(--bg-secondary); color: var(--text-muted); }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-card);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: color var(--transition);
            background: none;
            border: none;
            font-family: var(--font-sans);
        }
        .faq-question:hover {
            color: var(--accent-light);
        }
        .faq-icon {
            font-size: 1.4rem;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
            width: 24px;
            text-align: center;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            text-align: center;
            padding: 70px 0;
            background: linear-gradient(160deg, #111d30 0%, #0f1a2a 50%, #0d1117 100%);
            border-radius: var(--radius-xl);
            margin: 0 20px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(74,158,255,0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
        }
        .cta-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-desc {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-nav);
            border-top: 1px solid var(--border-light);
            padding: 40px 0 30px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-brand-name {
            font-weight: 800;
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .footer-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 280px;
        }
        .footer-col-title {
            font-weight: 700;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: color var(--transition);
            text-decoration: none;
        }
        .footer-links a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1200px) {
            .hero-bg-img {
                width: 320px;
                height: 250px;
                right: 2%;
                opacity: 0.4;
            }
            .hero-title {
                font-size: 2.4rem;
            }
        }
        @media (max-width: 1024px) {
            :root {
                --nav-width: 0px;
            }
            body {
                flex-direction: column;
            }
            .nav-sidebar {
                transform: translateX(-100%);
                width: 280px;
                box-shadow: var(--shadow-lg);
            }
            .nav-sidebar.open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
                padding-top: var(--header-mobile-height);
            }
            .mobile-header {
                display: flex;
            }
            .mobile-overlay.show {
                display: block;
            }
            .hero {
                padding: 60px 0 50px;
                min-height: auto;
            }
            .hero-inner {
                flex-direction: column;
                text-align: center;
                gap: 30px;
            }
            .hero-text {
                max-width: 100%;
            }
            .hero-desc {
                max-width: 100%;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-stats-row {
                justify-content: center;
            }
            .hero-bg-img {
                position: relative;
                right: auto;
                top: auto;
                transform: none;
                width: 100%;
                max-width: 350px;
                height: 200px;
                margin: 0 auto;
                opacity: 0.7;
                mask-image: none;
                -webkit-mask-image: none;
                border-radius: var(--radius);
            }
            .hero-title {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .container {
                padding: 0 20px;
            }
            .section {
                padding: 50px 0;
            }
            .cta-section {
                margin: 0 12px;
                padding: 50px 20px;
                border-radius: var(--radius-lg);
            }
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-stats-row {
                gap: 20px;
            }
            .hero-stat-value {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .content-list-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }
            .content-list-thumb {
                width: 100%;
                height: 140px;
                border-radius: var(--radius-sm);
            }
            .steps-list {
                gap: 14px;
            }
            .step-item {
                flex-direction: column;
                gap: 12px;
                padding: 18px 20px;
            }
            .step-number {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                text-align: center;
            }
            .footer-desc {
                max-width: 100%;
            }
            .footer-links {
                align-items: center;
            }
            .ranking-table-wrap {
                border-radius: var(--radius);
            }
            .btn {
                padding: 11px 20px;
                font-size: 0.9rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 15px 16px;
            }
            .faq-answer-inner {
                padding: 0 16px 15px;
            }
        }
        @media (max-width: 520px) {
            .hero {
                padding: 40px 0 35px;
            }
            .hero-title {
                font-size: 1.45rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats-row {
                gap: 14px;
            }
            .hero-stat-value {
                font-size: 1.3rem;
            }
            .section {
                padding: 36px 0;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .container {
                padding: 0 14px;
            }
            .cta-title {
                font-size: 1.4rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0a0e14;
            --bg-secondary: #0d1117;
            --bg-card: #161b22;
            --bg-card-hover: #1c2333;
            --bg-sidebar: #0d1117;
            --bg-input: #0d1117;
            --text-primary: #e6edf3;
            --text-secondary: #c9d1d9;
            --text-tertiary: #8b949e;
            --text-dim: #6e7681;
            --accent-gold: #d4a574;
            --accent-gold-light: #e2b87a;
            --accent-gold-dark: #b8895a;
            --accent-gold-glow: rgba(212, 165, 116, 0.25);
            --accent-purple: #a371f7;
            --accent-blue: #58a6ff;
            --accent-green: #3fb950;
            --accent-red: #f85149;
            --accent-orange: #d2991d;
            --border-default: #21262d;
            --border-light: #30363d;
            --border-gold: #d4a574;
            --border-purple: #7c4dff;
            --border-blue: #3b82f6;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
            --shadow-gold: 0 0 20px rgba(212, 165, 116, 0.15);
            --shadow-purple: 0 0 20px rgba(163, 113, 247, 0.15);
            --sidebar-width: 240px;
            --mobile-nav-height: 56px;
            --transition-fast: 0.15s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Consolas', monospace;
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: var(--accent-gold-light);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        a:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            transition: all var(--transition-normal);
        }

        button:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 3px;
        }

        input {
            font-family: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            color: var(--text-primary);
            font-weight: 700;
            line-height: 1.3;
        }

        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }

        /* ============ SIDEBAR NAVIGATION ============ */
        .nav-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            border-right: 1px solid var(--border-default);
            z-index: 1000;
            overflow-y: auto;
            overflow-x: hidden;
            display: flex;
            flex-direction: column;
            transition: transform var(--transition-normal);
        }

        .nav-sidebar-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
            padding: 20px 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 8px;
            margin-bottom: 24px;
            text-decoration: none;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 0.02em;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast);
        }

        .nav-logo:hover {
            background: var(--bg-card);
            color: var(--text-primary);
        }

        .nav-logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-gold-dark), var(--accent-gold-light));
            color: #0a0e14;
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            flex-shrink: 0;
            box-shadow: 0 0 12px var(--accent-gold-glow);
        }

        .nav-menu {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .nav-menu a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-menu a:hover {
            background: var(--bg-card);
            color: var(--text-primary);
        }

        .nav-menu a.active {
            background: rgba(212, 165, 116, 0.1);
            color: var(--accent-gold-light);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--accent-gold);
        }

        .nav-icon {
            font-size: 1.1rem;
            flex-shrink: 0;
            width: 24px;
            text-align: center;
        }

        .nav-badge {
            display: inline-block;
            font-size: 0.7rem;
            padding: 2px 8px;
            border-radius: 20px;
            background: var(--accent-red);
            color: #fff;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-left: auto;
            line-height: 1.4;
        }

        .nav-divider {
            height: 1px;
            background: var(--border-default);
            margin: 16px 0;
            flex-shrink: 0;
        }

        .nav-footer {
            flex-shrink: 0;
        }

        .nav-footer-text {
            font-size: 0.78rem;
            color: var(--text-dim);
            margin: 0;
            line-height: 1.5;
            text-align: center;
        }

        /* ============ MOBILE NAV TOGGLE ============ */
        .mobile-nav-toggle {
            display: none;
            position: fixed;
            top: 10px;
            left: 10px;
            z-index: 1100;
            width: 40px;
            height: 40px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 1.3rem;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        /* ============ MAIN CONTENT WRAPPER ============ */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            transition: margin var(--transition-normal);
        }

        .main-content {
            flex: 1;
            padding: 0;
        }

        /* ============ ARTICLE HEADER SECTION ============ */
        .article-header-section {
            padding: 28px 32px 20px;
            max-width: 900px;
            margin: 0 auto;
            width: 100%;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-tertiary);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: var(--text-tertiary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

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

        .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ============ ARTICLE HERO IMAGE ============ */
        .article-hero-image {
            max-width: 900px;
            margin: 0 auto 0;
            padding: 0 32px;
            width: 100%;
        }

        .article-hero-image img {
            width: 100%;
            border-radius: var(--radius-lg);
            aspect-ratio: 16 / 9;
            object-fit: cover;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-light);
        }

        /* ============ ARTICLE MAIN ============ */
        .article-main {
            max-width: 900px;
            margin: 0 auto;
            padding: 24px 32px 40px;
            width: 100%;
        }

        .article-meta-row {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .article-category-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(212, 165, 116, 0.12);
            color: var(--accent-gold-light);
            border: 1px solid rgba(212, 165, 116, 0.3);
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .article-category-tag:hover {
            background: rgba(212, 165, 116, 0.2);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }

        .article-date {
            font-size: 0.85rem;
            color: var(--text-tertiary);
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .article-date-icon {
            font-size: 0.9rem;
        }

        .article-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin: 0 0 20px;
            letter-spacing: 0.01em;
        }

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

        .article-body h2 {
            font-size: 1.45rem;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border-default);
            color: var(--text-primary);
        }

        .article-body h3 {
            font-size: 1.2rem;
            margin-top: 1.6rem;
            margin-bottom: 0.6rem;
            color: var(--text-primary);
        }

        .article-body p {
            margin-bottom: 1.2rem;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }

        .article-body li {
            margin-bottom: 0.5rem;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            border: 1px solid var(--border-default);
        }

        .article-body blockquote {
            border-left: 3px solid var(--accent-gold);
            padding: 16px 20px;
            margin: 1.5rem 0;
            background: var(--bg-card);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-body code {
            background: var(--bg-card);
            padding: 2px 7px;
            border-radius: 4px;
            font-family: var(--font-mono);
            font-size: 0.9em;
            color: var(--accent-gold-light);
            border: 1px solid var(--border-default);
        }

        .article-body pre {
            background: var(--bg-secondary);
            padding: 20px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            border: 1px solid var(--border-default);
            margin: 1.5rem 0;
        }

        .article-body pre code {
            background: none;
            padding: 0;
            border: none;
            color: var(--text-primary);
            font-size: 0.9rem;
        }

        /* ============ NOT FOUND STATE ============ */
        .not-found-section {
            max-width: 900px;
            margin: 80px auto;
            padding: 60px 32px;
            text-align: center;
        }

        .not-found-icon {
            font-size: 4rem;
            margin-bottom: 20px;
            display: block;
        }

        .not-found-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .not-found-desc {
            font-size: 1rem;
            color: var(--text-tertiary);
            margin-bottom: 28px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            text-decoration: none;
            transition: all var(--transition-normal);
            cursor: pointer;
            letter-spacing: 0.02em;
            line-height: 1;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-gold-dark), var(--accent-gold-light));
            color: #0a0e14;
            border: 1px solid transparent;
            box-shadow: var(--shadow-gold);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, var(--accent-gold-light), var(--accent-gold));
            color: #0a0e14;
            box-shadow: 0 0 28px rgba(212, 165, 116, 0.35);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--accent-gold-light);
            border: 1px solid var(--border-gold);
        }

        .btn-outline:hover {
            background: rgba(212, 165, 116, 0.1);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            transform: translateY(-2px);
        }

        /* ============ STRATEGY CARDS SECTION ============ */
        .strategy-section {
            max-width: 900px;
            margin: 0 auto;
            padding: 10px 32px 48px;
            width: 100%;
        }

        .strategy-section-title {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .strategy-section-title::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 24px;
            background: var(--accent-gold);
            border-radius: 2px;
        }

        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .strategy-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 22px 18px;
            border: 1px solid var(--border-default);
            transition: all var(--transition-slow);
            position: relative;
            overflow: hidden;
        }

        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            transition: height var(--transition-normal);
        }

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

        .strategy-card:hover::before {
            height: 5px;
        }

        .strategy-card.rarity-legendary {
            border-color: rgba(212, 165, 116, 0.35);
        }

        .strategy-card.rarity-legendary::before {
            background: linear-gradient(90deg, var(--accent-gold-dark), var(--accent-gold-light), var(--accent-gold-dark));
        }

        .strategy-card.rarity-legendary:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold);
        }

        .strategy-card.rarity-epic {
            border-color: rgba(163, 113, 247, 0.3);
        }

        .strategy-card.rarity-epic::before {
            background: linear-gradient(90deg, #7c3aed, #a371f7, #7c3aed);
        }

        .strategy-card.rarity-epic:hover {
            border-color: #7c4dff;
            box-shadow: var(--shadow-purple);
        }

        .strategy-card.rarity-rare {
            border-color: rgba(88, 166, 255, 0.25);
        }

        .strategy-card.rarity-rare::before {
            background: linear-gradient(90deg, #2563eb, #58a6ff, #2563eb);
        }

        .strategy-card.rarity-rare:hover {
            border-color: #3b82f6;
            box-shadow: 0 0 20px rgba(88, 166, 255, 0.15);
        }

        .strategy-card-rarity-label {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 10px;
            padding: 3px 10px;
            border-radius: 12px;
        }

        .rarity-legendary .strategy-card-rarity-label {
            background: rgba(212, 165, 116, 0.15);
            color: var(--accent-gold-light);
        }

        .rarity-epic .strategy-card-rarity-label {
            background: rgba(163, 113, 247, 0.15);
            color: var(--accent-purple);
        }

        .rarity-rare .strategy-card-rarity-label {
            background: rgba(88, 166, 255, 0.12);
            color: var(--accent-blue);
        }

        .strategy-card-icon {
            font-size: 2rem;
            margin-bottom: 10px;
            display: block;
        }

        .strategy-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--text-primary);
        }

        .strategy-card p {
            font-size: 0.85rem;
            color: var(--text-tertiary);
            margin: 0;
            line-height: 1.55;
        }

        /* ============ RELATED POSTS SECTION ============ */
        .related-section {
            max-width: 900px;
            margin: 0 auto;
            padding: 10px 32px 48px;
            width: 100%;
        }

        .related-section-title {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-section-title::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 24px;
            background: var(--accent-gold);
            border-radius: 2px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-default);
            transition: all var(--transition-slow);
            text-decoration: none;
            display: block;
        }

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

        .related-card-image {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            position: relative;
        }

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

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

        .related-card-image-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 14, 20, 0.7), transparent 50%);
        }

        .related-card-body {
            padding: 16px;
        }

        .related-card-tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            background: rgba(212, 165, 116, 0.12);
            color: var(--accent-gold-light);
            margin-bottom: 8px;
            letter-spacing: 0.03em;
        }

        .related-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-date {
            font-size: 0.78rem;
            color: var(--text-dim);
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            max-width: 900px;
            margin: 0 auto;
            padding: 20px 32px 50px;
            width: 100%;
        }

        .cta-block {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            text-align: center;
            border: 1px solid var(--border-default);
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            background-color: rgba(22, 27, 34, 0.92);
        }

        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(212, 165, 116, 0.08), transparent 70%);
            pointer-events: none;
        }

        .cta-block>* {
            position: relative;
            z-index: 1;
        }

        .cta-block h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .cta-block p {
            font-size: 0.95rem;
            color: var(--text-tertiary);
            margin-bottom: 24px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-block .btn-primary {
            padding: 14px 34px;
            font-size: 1rem;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-default);
            padding: 40px 0 24px;
            margin-top: auto;
            flex-shrink: 0;
        }

        .site-footer .container {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }

        .footer-brand-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .footer-desc {
            font-size: 0.85rem;
            color: var(--text-tertiary);
            line-height: 1.6;
            margin: 0;
        }

        .footer-col-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

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

        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-tertiary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-default);
            padding-top: 20px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.8rem;
            color: var(--text-dim);
            margin: 0;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .strategy-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-title {
                font-size: 1.65rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-sidebar {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                width: 100%;
                height: auto;
                max-height: 100vh;
                overflow-y: auto;
                border-right: none;
                border-bottom: 1px solid var(--border-default);
                transform: translateY(-100%);
                transition: transform var(--transition-slow);
                z-index: 1050;
            }

            .nav-sidebar.mobile-open {
                transform: translateY(0);
            }

            .nav-sidebar-inner {
                padding: 14px 16px;
                flex-direction: column;
                gap: 0;
            }

            .nav-logo {
                margin-bottom: 10px;
                font-size: 1rem;
                padding: 8px;
            }

            .nav-logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.7rem;
            }

            .nav-menu {
                flex-direction: column;
                gap: 2px;
            }

            .nav-menu a {
                padding: 10px 12px;
                font-size: 0.9rem;
            }

            .nav-badge {
                font-size: 0.65rem;
                padding: 2px 7px;
            }

            .nav-divider {
                margin: 10px 0;
            }

            .nav-footer-text {
                font-size: 0.72rem;
            }

            .mobile-nav-toggle {
                display: flex;
                position: fixed;
                top: 8px;
                left: 8px;
                z-index: 1100;
                width: 40px;
                height: 40px;
                background: var(--bg-card);
                border: 1px solid var(--border-light);
                border-radius: var(--radius-sm);
                color: var(--text-primary);
                font-size: 1.3rem;
                align-items: center;
                justify-content: center;
                cursor: pointer;
                box-shadow: var(--shadow-md);
            }

            .main-wrapper {
                margin-left: 0;
                padding-top: var(--mobile-nav-height);
            }

            .article-header-section {
                padding: 20px 16px 14px;
            }

            .article-hero-image {
                padding: 0 16px;
            }

            .article-main {
                padding: 18px 16px 32px;
            }

            .article-title {
                font-size: 1.4rem;
            }

            .article-body {
                font-size: 0.95rem;
            }

            .strategy-section {
                padding: 6px 16px 36px;
            }

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

            .related-section {
                padding: 6px 16px 36px;
            }

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

            .cta-section {
                padding: 14px 16px 36px;
            }

            .cta-block {
                padding: 28px 18px;
            }

            .cta-block h3 {
                font-size: 1.2rem;
            }

            .site-footer .container {
                padding: 0 16px;
            }

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

            .strategy-section-title,
            .related-section-title {
                font-size: 1.15rem;
            }
        }

        @media (max-width: 520px) {
            .article-title {
                font-size: 1.2rem;
            }
            .article-meta-row {
                gap: 8px;
            }
            .article-category-tag {
                font-size: 0.72rem;
                padding: 4px 10px;
            }
            .article-date {
                font-size: 0.75rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                gap: 4px;
            }
            .article-body {
                font-size: 0.9rem;
                line-height: 1.7;
            }
            .article-body h2 {
                font-size: 1.2rem;
            }
            .article-body h3 {
                font-size: 1.05rem;
            }
            .strategy-card {
                padding: 16px 14px;
            }
            .strategy-card h4 {
                font-size: 0.9rem;
            }
            .related-card h4 {
                font-size: 0.85rem;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
        }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --color-primary: #1a1a2e;
            --color-primary-light: #252547;
            --color-primary-dark: #0f0f1f;
            --color-accent: #d4a745;
            --color-accent-light: #e8c96a;
            --color-accent-glow: rgba(212, 167, 69, 0.25);
            --color-silver: #a8a8a8;
            --color-silver-light: #c5c5c5;
            --color-bronze: #b87351;
            --color-bronze-light: #d4946e;
            --color-red: #c0392b;
            --color-red-light: #e74c3c;
            --color-bg: #f5f0eb;
            --color-bg-alt: #ece5dc;
            --color-bg-dark: #1e1e35;
            --color-surface: #ffffff;
            --color-surface-hover: #fafaf8;
            --color-text: #2c2c2c;
            --color-text-light: #6b6b6b;
            --color-text-lighter: #999999;
            --color-text-on-dark: #e0d8cf;
            --color-border: #e0d8cf;
            --color-border-light: #ece5dc;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 16px 40px rgba(0, 0, 0, 0.16);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.15);
            --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;
            --nav-width: 250px;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
        }

        /* ============ Reset & Base ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            display: flex;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        /* ============ 左侧导航栏 ============ */
        .nav-sidebar {
            width: var(--nav-width);
            flex-shrink: 0;
            background: var(--color-primary);
            color: var(--color-text-on-dark);
            display: flex;
            flex-direction: column;
            position: fixed;
            top: 0;
            left: 0;
            height: 100vh;
            z-index: 1000;
            box-shadow: 4px 0 24px rgba(0, 0, 0, 0.25);
            transition: transform var(--transition-normal);
            overflow-y: auto;
        }

        .nav-sidebar-inner {
            display: flex;
            flex-direction: column;
            padding: 28px 20px 20px;
            flex: 1;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            border-radius: var(--radius-md);
            margin-bottom: 28px;
            transition: background var(--transition-fast);
            text-decoration: none;
            color: #ffffff;
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 0.02em;
        }

        .nav-logo:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            color: var(--color-primary-dark);
            font-weight: 900;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .nav-menu a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-md);
            color: var(--color-text-on-dark);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            text-decoration: none;
        }

        .nav-menu a:hover {
            background: rgba(255, 255, 255, 0.07);
            color: #ffffff;
        }

        .nav-menu a.active {
            background: rgba(212, 167, 69, 0.15);
            color: var(--color-accent-light);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--color-accent);
        }

        .nav-icon {
            font-size: 1.15rem;
            flex-shrink: 0;
            width: 24px;
            text-align: center;
        }

        .nav-badge {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 3px 8px;
            border-radius: 20px;
            background: var(--color-red);
            color: #fff;
            letter-spacing: 0.04em;
            line-height: 1;
            margin-left: auto;
            animation: badgePulse 2s ease-in-out infinite;
        }

        @keyframes badgePulse {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.08);
            }
        }

        .nav-divider {
            height: 1px;
            background: rgba(255, 255, 255, 0.1);
            margin: 20px 0;
            flex-shrink: 0;
        }

        .nav-footer {
            margin-top: auto;
            flex-shrink: 0;
        }

        .nav-footer-text {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.5;
            text-align: center;
        }

        /* ============ 主内容区 ============ */
        .main-content {
            flex: 1;
            margin-left: var(--nav-width);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 32px;
            width: 100%;
        }

        .container-narrow {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 32px;
            width: 100%;
        }

        /* ============ 分类Banner ============ */
        .category-banner {
            position: relative;
            background: var(--color-primary-dark) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 70px 0 64px;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg,
                    rgba(26, 26, 46, 0.88) 0%,
                    rgba(26, 26, 46, 0.72) 50%,
                    rgba(15, 15, 31, 0.9) 100%);
            z-index: 1;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light), var(--color-accent));
            z-index: 2;
        }

        .category-banner-content {
            position: relative;
            z-index: 3;
        }

        .category-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
        }

        .category-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition-fast);
        }

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

        .category-breadcrumb .separator {
            color: rgba(255, 255, 255, 0.35);
        }

        .category-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
            line-height: 1.2;
        }

        .category-banner h1 .accent {
            color: var(--color-accent-light);
        }

        .category-banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            line-height: 1.6;
        }

        .category-stats-row {
            display: flex;
            gap: 32px;
            margin-top: 28px;
            flex-wrap: wrap;
        }

        .category-stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.9rem;
        }

        .category-stat-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--color-accent-light);
            line-height: 1;
        }

        /* ============ 子分类筛选区 ============ */
        .filter-section {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 18px 0;
            position: sticky;
            top: 0;
            z-index: 50;
            box-shadow: var(--shadow-sm);
        }

        .filter-inner {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .filter-label {
            font-weight: 700;
            font-size: 0.88rem;
            color: var(--color-text);
            white-space: nowrap;
            margin-right: 4px;
        }

        .filter-tag {
            display: inline-block;
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            border: 1.5px solid var(--color-border);
            background: var(--color-surface);
            color: var(--color-text);
            transition: all var(--transition-fast);
            white-space: nowrap;
            user-select: none;
        }

        .filter-tag:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(212, 167, 69, 0.05);
        }

        .filter-tag.active {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
            font-weight: 700;
            box-shadow: 0 2px 8px var(--color-accent-glow);
        }

        .filter-search {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--color-bg);
            border-radius: 20px;
            padding: 6px 6px 6px 16px;
            border: 1.5px solid var(--color-border);
            transition: border-color var(--transition-fast);
        }

        .filter-search:focus-within {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px var(--color-accent-glow);
        }

        .filter-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.85rem;
            color: var(--color-text);
            width: 160px;
        }

        .filter-search button {
            background: var(--color-accent);
            color: #fff;
            border-radius: 16px;
            padding: 7px 14px;
            font-size: 0.82rem;
            font-weight: 600;
            transition: background var(--transition-fast);
            white-space: nowrap;
        }

        .filter-search button:hover {
            background: var(--color-accent-light);
        }

        /* ============ 攻略文章矩阵 ============ */
        .articles-section {
            padding: 48px 0 56px;
            background: var(--color-bg);
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 32px;
            flex-wrap: wrap;
            gap: 16px;
        }

        .section-header h2 {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            position: relative;
            padding-left: 16px;
        }

        .section-header h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            border-radius: 2px;
            background: var(--color-accent);
        }

        .section-header .view-all {
            font-size: 0.9rem;
            color: var(--color-accent);
            font-weight: 600;
            transition: color var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .section-header .view-all:hover {
            color: var(--color-accent-light);
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        /* 攻略文章卡片 */
        .article-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-normal);
            position: relative;
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: transparent;
        }

        .article-card.rarity-gold {
            border-top: 3px solid var(--color-accent);
        }

        .article-card.rarity-silver {
            border-top: 3px solid var(--color-silver);
        }

        .article-card.rarity-bronze {
            border-top: 3px solid var(--color-bronze);
        }

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

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

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

        .article-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            border-radius: 14px;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            z-index: 2;
            color: #fff;
        }

        .badge-gold {
            background: var(--color-accent);
            color: var(--color-primary-dark);
        }

        .badge-silver {
            background: var(--color-silver);
        }

        .badge-bronze {
            background: var(--color-bronze);
        }

        .badge-hot {
            background: var(--color-red);
        }

        .badge-new {
            background: #2980b9;
        }

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

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

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

        .article-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.4;
            margin-bottom: 8px;
            flex: 1;
            transition: color var(--transition-fast);
        }

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

        .article-card-excerpt {
            font-size: 0.85rem;
            color: var(--color-text-light);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

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

        .article-card-tag {
            font-size: 0.72rem;
            padding: 3px 10px;
            border-radius: 12px;
            background: var(--color-bg);
            color: var(--color-text-light);
            font-weight: 500;
            border: 1px solid var(--color-border-light);
        }

        /* ============ 热门排行区 ============ */
        .ranking-section {
            padding: 48px 0 56px;
            background: var(--color-surface);
        }

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

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            border-radius: var(--radius-md);
            background: var(--color-bg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .ranking-item:hover {
            background: var(--color-surface-hover);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }

        .ranking-num {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
            background: var(--color-bg-alt);
            color: var(--color-text-light);
        }

        .ranking-item.top-1 .ranking-num {
            background: linear-gradient(135deg, #d4a745, #e8c96a);
            color: #fff;
            box-shadow: 0 4px 14px rgba(212, 167, 69, 0.35);
            font-size: 1.3rem;
        }

        .ranking-item.top-2 .ranking-num {
            background: linear-gradient(135deg, #a8a8a8, #c5c5c5);
            color: #fff;
            box-shadow: 0 4px 12px rgba(168, 168, 168, 0.3);
        }

        .ranking-item.top-3 .ranking-num {
            background: linear-gradient(135deg, #b87351, #d4946e);
            color: #fff;
            box-shadow: 0 4px 12px rgba(184, 115, 81, 0.3);
        }

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

        .ranking-info h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ranking-info .ranking-meta {
            font-size: 0.78rem;
            color: var(--color-text-lighter);
        }

        .ranking-stats {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--color-text-light);
            flex-shrink: 0;
        }

        .ranking-stats span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .ranking-arrow {
            color: var(--color-accent);
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        /* ============ 攻略流程步骤 ============ */
        .steps-section {
            padding: 48px 0 56px;
            background: var(--color-bg);
        }

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

        .step-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 20px 24px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            position: relative;
            transition: all var(--transition-normal);
        }

        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .step-number {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #fff;
            font-weight: 800;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
            box-shadow: 0 4px 14px var(--color-accent-glow);
        }

        .step-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
        }

        .step-card p {
            font-size: 0.84rem;
            color: var(--color-text-light);
            line-height: 1.5;
        }

        .step-connector {
            display: none;
        }

        /* ============ 精选推荐区 ============ */
        .featured-section {
            padding: 48px 0 56px;
            background: var(--color-bg-dark);
            color: #fff;
        }

        .featured-section .section-header h2 {
            color: #ffffff;
        }

        .featured-section .section-header h2::before {
            background: var(--color-accent-light);
        }

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

        .featured-card {
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }

        .featured-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--color-accent);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
            transform: translateY(-4px);
        }

        .featured-card.rarity-frame-gold {
            border: 2px solid var(--color-accent);
            box-shadow: 0 0 20px var(--color-accent-glow);
        }

        .featured-card.rarity-frame-silver {
            border: 2px solid var(--color-silver);
        }

        .featured-card-img-wrap {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: rgba(0, 0, 0, 0.3);
        }

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

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

        .featured-card-body {
            padding: 20px 22px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .featured-card-body p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.5;
            flex: 1;
            margin-bottom: 12px;
        }

        .featured-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .featured-rarity-label {
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 12px;
            letter-spacing: 0.04em;
        }

        .rarity-label-gold {
            background: rgba(212, 167, 69, 0.2);
            color: var(--color-accent-light);
            border: 1px solid rgba(212, 167, 69, 0.3);
        }

        .rarity-label-silver {
            background: rgba(168, 168, 168, 0.2);
            color: var(--color-silver-light);
            border: 1px solid rgba(168, 168, 168, 0.3);
        }

        .featured-read-more {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-accent-light);
            transition: color var(--transition-fast);
        }

        .featured-card:hover .featured-read-more {
            color: #fff;
        }

        /* ============ CTA区域 ============ */
        .cta-section {
            padding: 56px 0 60px;
            background: var(--color-surface);
            text-align: center;
        }

        .cta-card {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            color: #fff;
            box-shadow: var(--shadow-xl);
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }

        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }

        .cta-card h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-card p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
            max-width: 540px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta {
            display: inline-block;
            padding: 14px 36px;
            border-radius: 30px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 16px rgba(212, 167, 69, 0.4);
        }

        .btn-cta:hover {
            background: var(--color-accent-light);
            box-shadow: 0 6px 24px rgba(212, 167, 69, 0.55);
            transform: translateY(-2px);
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--color-primary-dark);
            color: var(--color-text-on-dark);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 10px;
        }

        .footer-desc {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.6;
        }

        .footer-col-title {
            font-weight: 700;
            font-size: 0.95rem;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ============ 响应式设计 ============ */
        @media (max-width: 1024px) {
            :root {
                --nav-width: 220px;
            }
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .featured-grid {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .category-banner h1 {
                font-size: 2.1rem;
            }
            .filter-search input {
                width: 100px;
            }
        }

        @media (max-width: 768px) {
            body {
                flex-direction: column;
            }
            .nav-sidebar {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                width: 100%;
                height: auto;
                max-height: 60px;
                overflow: hidden;
                flex-direction: row;
                z-index: 1000;
                box-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
                transition: max-height var(--transition-normal);
            }
            .nav-sidebar.nav-open {
                max-height: 100vh;
                overflow-y: auto;
            }
            .nav-sidebar-inner {
                flex-direction: row;
                align-items: center;
                justify-content: space-between;
                padding: 10px 16px;
                flex-wrap: wrap;
            }
            .nav-logo {
                margin-bottom: 0;
                font-size: 0.95rem;
                padding: 6px 8px;
            }
            .nav-logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.7rem;
            }
            .nav-menu {
                flex-direction: row;
                gap: 2px;
                flex-wrap: wrap;
                width: 100%;
                padding-top: 8px;
                display: none;
            }
            .nav-sidebar.nav-open .nav-menu {
                display: flex;
            }
            .nav-menu a {
                font-size: 0.82rem;
                padding: 8px 10px;
                border-radius: var(--radius-sm);
            }
            .nav-divider {
                display: none;
            }
            .nav-footer {
                display: none;
            }
            .nav-badge {
                font-size: 0.65rem;
                padding: 2px 6px;
            }
            .nav-toggle-btn {
                display: flex !important;
                align-items: center;
                justify-content: center;
                width: 36px;
                height: 36px;
                border-radius: var(--radius-sm);
                background: rgba(255, 255, 255, 0.1);
                color: #fff;
                font-size: 1.4rem;
                cursor: pointer;
                flex-shrink: 0;
            }
            .main-content {
                margin-left: 0;
                margin-top: 60px;
            }
            .container,
            .container-narrow {
                padding: 0 18px;
            }
            .articles-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .featured-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-banner {
                padding: 40px 0 36px;
            }
            .category-banner h1 {
                font-size: 1.7rem;
            }
            .category-banner-desc {
                font-size: 0.95rem;
            }
            .filter-inner {
                gap: 6px;
            }
            .filter-tag {
                font-size: 0.78rem;
                padding: 5px 12px;
            }
            .filter-search {
                margin-left: 0;
                width: 100%;
                margin-top: 8px;
            }
            .filter-search input {
                width: 100%;
            }
            .ranking-stats {
                display: none;
            }
            .section-header h2 {
                font-size: 1.35rem;
            }
            .cta-card {
                padding: 32px 20px;
            }
            .cta-card h2 {
                font-size: 1.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .articles-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .category-stats-row {
                gap: 16px;
            }
            .category-stat-num {
                font-size: 1.3rem;
            }
            .category-banner h1 {
                font-size: 1.4rem;
            }
            .ranking-item {
                padding: 12px 14px;
                gap: 10px;
            }
            .ranking-num {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }
            .ranking-item.top-1 .ranking-num {
                font-size: 1.1rem;
            }
            .ranking-info h4 {
                font-size: 0.85rem;
            }
            .article-card-body {
                padding: 14px;
            }
            .article-card h3 {
                font-size: 0.95rem;
            }
            .featured-card-body {
                padding: 14px;
            }
            .featured-card-body h3 {
                font-size: 1rem;
            }
            .cta-card {
                padding: 24px 16px;
            }
            .cta-card h2 {
                font-size: 1.2rem;
            }
            .btn-cta {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* 导航切换按钮（桌面端隐藏） */
        .nav-toggle-btn {
            display: none;
        }

        /* 分页器 */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: 36px;
        }
        .pagination a,
        .pagination span {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            color: var(--color-text);
        }
        .pagination a:hover {
            background: var(--color-bg);
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        .pagination .current {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
            font-weight: 700;
        }
        .pagination .dots {
            border: none;
            background: transparent;
            color: var(--color-text-lighter);
            cursor: default;
        }

        /* 回到顶部 */
        .back-to-top {
            position: fixed;
            bottom: 28px;
            right: 28px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-lg);
            z-index: 99;
            transition: all var(--transition-fast);
            cursor: pointer;
            opacity: 0;
            pointer-events: none;
            transform: translateY(10px);
        }
        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--color-accent-light);
            box-shadow: var(--shadow-xl);
            transform: translateY(-3px);
        }