/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #00d4ff;
            --clr-primary-dark: #009bb3;
            --clr-primary-glow: rgba(0, 212, 255, 0.35);
            --clr-secondary: #ff6b35;
            --clr-secondary-glow: rgba(255, 107, 53, 0.3);
            --clr-accent-pink: #ff2d55;
            --clr-bg-dark: #0a0a0a;
            --clr-bg-card: #111111;
            --clr-bg-section: #0e0e0e;
            --clr-bg-elevated: #1a1a2e;
            --clr-text-primary: #f0f0f0;
            --clr-text-secondary: #b0b0b0;
            --clr-text-muted: #6e6e6e;
            --clr-border: #2a2a3a;
            --clr-border-glow: #00d4ff;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0, 212, 255, 0.06);
            --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.15);
            --transition-fast: 0.2s ease;
            --transition-med: 0.35s ease;
            --transition-slow: 0.5s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
        }

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

        /* ===== 容器 ===== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-sm);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 10, 10, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--clr-border);
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.6);
            transition: background var(--transition-med);
        }
        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-sm);
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 30px var(--clr-primary-glow);
            white-space: nowrap;
        }
        .site-logo:hover {
            opacity: 0.9;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
        }
        .nav-list a {
            position: relative;
            padding: 0.5rem 1.2rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--clr-text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            letter-spacing: 0.3px;
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--clr-primary);
            box-shadow: 0 0 12px var(--clr-primary-glow);
            transition: width var(--transition-med);
            border-radius: 2px;
        }
        .nav-list a:hover {
            color: var(--clr-text-primary);
            background: rgba(0, 212, 255, 0.06);
        }
        .nav-list a:hover::after {
            width: 60%;
        }
        .nav-list a.active {
            color: var(--clr-primary);
            background: rgba(0, 212, 255, 0.08);
        }
        .nav-list a.active::after {
            width: 70%;
            box-shadow: 0 0 20px var(--clr-primary-glow), 0 0 40px var(--clr-primary-glow);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark)) !important;
            color: #fff !important;
            padding: 0.5rem 1.6rem !important;
            border-radius: 30px !important;
            font-weight: 600 !important;
            box-shadow: 0 0 20px var(--clr-primary-glow);
            transition: all var(--transition-fast) !important;
            -webkit-text-fill-color: #fff !important;
        }
        .nav-cta::after {
            display: none !important;
        }
        .nav-cta:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 0 35px var(--clr-primary-glow), 0 4px 20px rgba(0, 212, 255, 0.3);
            background: linear-gradient(135deg, #00e5ff, #00a3cc) !important;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--clr-text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.3rem;
            line-height: 1;
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 4px;
            border-radius: 4px;
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(10, 10, 10, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: var(--space-md) var(--space-sm);
                gap: var(--space-xs);
                border-bottom: 2px solid var(--clr-border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-med);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
                z-index: 99;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-list a {
                font-size: 1.1rem;
                padding: 0.8rem 1.2rem;
                width: 100%;
                text-align: center;
                border-radius: var(--radius-sm);
            }
            .nav-list a::after {
                bottom: 4px;
            }
            .nav-list a.active::after {
                width: 40%;
            }
            .nav-cta {
                margin-top: var(--space-xs);
                width: auto;
                display: inline-block;
                align-self: center;
            }
            .site-logo {
                font-size: 1.25rem;
            }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            padding: var(--space-xl) 0 var(--space-lg);
            overflow: hidden;
            background: radial-gradient(ellipse at 20% 50%, rgba(0, 212, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, rgba(255, 107, 53, 0.06) 0%, transparent 50%),
                var(--clr-bg-dark);
            text-align: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -20%;
            width: 80%;
            height: 80%;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--clr-primary-glow), transparent);
        }
        .hero .hero-badge {
            display: inline-block;
            padding: 0.3rem 1.4rem;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--clr-primary);
            border: 1px solid rgba(0, 212, 255, 0.25);
            border-radius: 30px;
            background: rgba(0, 212, 255, 0.06);
            margin-bottom: var(--space-md);
            backdrop-filter: blur(4px);
        }
        .hero h1 {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: var(--space-sm);
            background: linear-gradient(135deg, #ffffff 30%, var(--clr-primary) 70%, var(--clr-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
        }
        .hero .hero-sub {
            font-size: clamp(1.05rem, 2vw, 1.35rem);
            color: var(--clr-text-secondary);
            max-width: 680px;
            margin: 0 auto var(--space-md);
            line-height: 1.7;
        }
        .hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            justify-content: center;
            margin-bottom: var(--space-lg);
        }
        .btn-primary,
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 2.4rem;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 40px;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            color: #fff;
            box-shadow: 0 0 25px var(--clr-primary-glow);
        }
        .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 0 45px var(--clr-primary-glow), 0 8px 30px rgba(0, 212, 255, 0.2);
            color: #fff;
        }
        .btn-secondary {
            background: transparent;
            color: var(--clr-text-primary);
            border: 1px solid var(--clr-border);
            backdrop-filter: blur(4px);
        }
        .btn-secondary:hover {
            border-color: var(--clr-primary);
            color: var(--clr-primary);
            background: rgba(0, 212, 255, 0.06);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--space-lg);
            padding-top: var(--space-md);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .hero-stats .stat-item {
            text-align: center;
        }
        .hero-stats .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--clr-primary);
            display: block;
            line-height: 1.2;
            text-shadow: 0 0 20px var(--clr-primary-glow);
        }
        .hero-stats .stat-label {
            font-size: 0.85rem;
            color: var(--clr-text-muted);
            margin-top: 0.2rem;
        }
        @media (max-width: 520px) {
            .hero-stats {
                gap: var(--space-md);
            }
            .hero-stats .stat-number {
                font-size: 1.6rem;
            }
            .btn-primary,
            .btn-secondary {
                padding: 0.7rem 1.8rem;
                font-size: 0.9rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--space-lg) 0;
        }
        .section-dark {
            background: var(--clr-bg-section);
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--space-lg);
        }
        .section-header h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            margin-bottom: var(--space-xs);
            letter-spacing: -0.01em;
        }
        .section-header .section-subtitle {
            font-size: 1.05rem;
            color: var(--clr-text-muted);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header .section-line {
            width: 60px;
            height: 3px;
            background: var(--clr-primary);
            border-radius: 4px;
            margin: var(--space-sm) auto 0;
            box-shadow: 0 0 16px var(--clr-primary-glow);
        }

        /* ===== 特色卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--space-md);
        }
        .feature-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            border: 1px solid var(--clr-border);
            transition: all var(--transition-med);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--clr-primary), transparent);
            opacity: 0;
            transition: opacity var(--transition-med);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 212, 255, 0.2);
            box-shadow: var(--shadow-card);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: rgba(0, 212, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--clr-primary);
            margin-bottom: var(--space-sm);
            transition: all var(--transition-fast);
        }
        .feature-card:hover .icon-wrap {
            background: rgba(0, 212, 255, 0.18);
            box-shadow: 0 0 20px var(--clr-primary-glow);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--clr-text-muted);
        }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--space-md);
        }
        .category-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            border: 1px solid var(--clr-border);
            text-align: center;
            transition: all var(--transition-med);
            cursor: pointer;
            position: relative;
        }
        .category-card:hover {
            transform: translateY(-5px);
            border-color: var(--clr-secondary);
            box-shadow: 0 0 30px var(--clr-secondary-glow);
        }
        .category-card .cat-icon {
            font-size: 2.4rem;
            color: var(--clr-secondary);
            margin-bottom: var(--space-sm);
            transition: transform var(--transition-fast);
        }
        .category-card:hover .cat-icon {
            transform: scale(1.1);
        }
        .category-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
        }
        .category-card p {
            font-size: 0.88rem;
            color: var(--clr-text-muted);
        }
        .category-card .cat-tag {
            display: inline-block;
            margin-top: var(--space-sm);
            padding: 0.2rem 1rem;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 20px;
            background: rgba(255, 107, 53, 0.12);
            color: var(--clr-secondary);
        }

        /* ===== 资讯列表 ===== */
        .post-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--space-md);
        }
        .post-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--clr-border);
            transition: all var(--transition-med);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover {
            transform: translateY(-5px);
            border-color: rgba(0, 212, 255, 0.15);
            box-shadow: var(--shadow-card);
        }
        .post-card .post-thumb {
            width: 100%;
            height: 180px;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(255, 107, 53, 0.06));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.6rem;
            color: var(--clr-primary-glow);
            flex-shrink: 0;
        }
        .post-card .post-body {
            padding: var(--space-sm) var(--space-md) var(--space-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .post-card .post-cat {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--clr-primary);
            background: rgba(0, 212, 255, 0.1);
            padding: 0.15rem 0.8rem;
            border-radius: 20px;
            margin-bottom: 0.5rem;
            align-self: flex-start;
        }
        .post-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            line-height: 1.35;
        }
        .post-card h3 a {
            color: var(--clr-text-primary);
            transition: color var(--transition-fast);
        }
        .post-card h3 a:hover {
            color: var(--clr-primary);
        }
        .post-card .post-excerpt {
            font-size: 0.88rem;
            color: var(--clr-text-muted);
            flex: 1;
            margin-bottom: var(--space-sm);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .post-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.78rem;
            color: var(--clr-text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 0.7rem;
        }
        .post-card .post-meta .date {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .empty-msg {
            text-align: center;
            padding: var(--space-lg) var(--space-md);
            color: var(--clr-text-muted);
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--clr-border);
            font-size: 1rem;
        }

        /* ===== 数据/流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--space-md);
            counter-reset: step-counter;
        }
        .step-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            border: 1px solid var(--clr-border);
            text-align: center;
            position: relative;
            transition: all var(--transition-med);
        }
        .step-card:hover {
            border-color: rgba(0, 212, 255, 0.2);
            transform: translateY(-3px);
        }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(0, 212, 255, 0.1);
            color: var(--clr-primary);
            font-size: 1.2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--space-sm);
            border: 1px solid rgba(0, 212, 255, 0.15);
            box-shadow: 0 0 20px var(--clr-primary-glow);
        }
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--clr-text-muted);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }
        .faq-item {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.12);
        }
        .faq-item .faq-q {
            padding: var(--space-sm) var(--space-md);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--clr-text-primary);
            user-select: none;
            transition: background var(--transition-fast);
        }
        .faq-item .faq-q:hover {
            background: rgba(0, 212, 255, 0.03);
        }
        .faq-item .faq-q .icon {
            font-size: 0.9rem;
            color: var(--clr-primary);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item .faq-a {
            padding: 0 var(--space-md) var(--space-sm);
            font-size: 0.92rem;
            color: var(--clr-text-muted);
            line-height: 1.7;
            display: none;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: var(--space-sm);
        }
        .faq-item.open .faq-a {
            display: block;
        }
        .faq-item.open .faq-q .icon {
            transform: rotate(180deg);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.06) 0%, transparent 70%),
                var(--clr-bg-dark);
            border-top: 1px solid var(--clr-border);
            border-bottom: 1px solid var(--clr-border);
            text-align: center;
            padding: var(--space-xl) 0;
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            margin-bottom: var(--space-xs);
        }
        .cta-section p {
            font-size: 1.05rem;
            color: var(--clr-text-muted);
            max-width: 560px;
            margin: 0 auto var(--space-md);
        }
        .cta-section .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            justify-content: center;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--clr-bg-dark);
            padding: var(--space-lg) 0 var(--space-md);
            border-top: 1px solid var(--clr-border);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-lg);
        }
        .site-footer .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
            margin-bottom: var(--space-xs);
        }
        .site-footer .footer-brand p {
            font-size: 0.88rem;
            color: var(--clr-text-muted);
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: var(--space-sm);
            color: var(--clr-text-primary);
        }
        .site-footer .footer-col ul li {
            margin-bottom: 0.4rem;
        }
        .site-footer .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--clr-text-muted);
            transition: color var(--transition-fast);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--clr-primary);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: var(--space-md);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-sm);
            font-size: 0.82rem;
            color: var(--clr-text-muted);
        }
        .site-footer .footer-bottom a {
            color: var(--clr-text-muted);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--clr-primary);
        }
        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 520px) {
            .section {
                padding: var(--space-md) 0;
            }
            .features-grid,
            .category-grid,
            .post-grid,
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .container-custom {
                padding: 0 var(--space-sm);
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .features-grid,
            .post-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ===== focus-visible ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--clr-bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--clr-border);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--clr-text-muted);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #f0c040;
            --clr-primary-light: #fadc7a;
            --clr-primary-dark: #c9a030;
            --clr-accent: #ff6b6b;
            --clr-accent-hover: #ff4757;
            --clr-bg: #0b0e17;
            --clr-bg-card: #131a2b;
            --clr-bg-elevated: #1a2340;
            --clr-bg-section: #0f1420;
            --clr-text: #e8edf5;
            --clr-text-muted: #8a96b0;
            --clr-text-dim: #5a6680;
            --clr-border: #1e2a44;
            --clr-border-light: #2a3a5a;
            --clr-success: #2ed573;
            --clr-warning: #ffa502;
            --clr-info: #3d9eff;
            --font-primary: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4), 0 1px 4px rgba(0, 0, 0, 0.3);
            --shadow-elevated: 0 8px 40px rgba(0, 0, 0, 0.6), 0 2px 8px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(240, 192, 64, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-primary);
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.7;
            font-weight: 400;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--clr-primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--clr-primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 2px;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

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

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

        /* ===== 页头 & 导航 (暗色霓虹风格) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(11, 14, 23, 0.92);
            backdrop-filter: blur(18px) saturate(1.4);
            border-bottom: 1px solid var(--clr-border);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.6);
            height: var(--header-height);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(11, 14, 23, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.8);
        }

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

        .site-logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--clr-primary);
            letter-spacing: 1.5px;
            text-transform: uppercase;
            text-shadow: 0 0 20px rgba(240, 192, 64, 0.3);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .site-logo:hover {
            color: var(--clr-primary-light);
            text-shadow: 0 0 30px rgba(240, 192, 64, 0.5);
            transform: scale(1.02);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--clr-text);
            font-size: 26px;
            cursor: pointer;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            color: var(--clr-primary);
            background: rgba(240, 192, 64, 0.1);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 2px;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-list a {
            color: var(--clr-text-muted);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }

        .nav-list a:hover {
            color: var(--clr-text);
            background: rgba(240, 192, 64, 0.08);
        }

        .nav-list a.active {
            color: var(--clr-primary);
            background: rgba(240, 192, 64, 0.12);
            text-shadow: 0 0 12px rgba(240, 192, 64, 0.2);
        }

        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--clr-primary);
            border-radius: 2px;
            box-shadow: 0 0 12px rgba(240, 192, 64, 0.6);
        }

        .nav-list a.nav-cta {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            color: #0b0e17;
            font-weight: 700;
            padding: 8px 24px;
            border-radius: 30px;
            box-shadow: 0 0 20px rgba(240, 192, 64, 0.25);
            transition: var(--transition);
            margin-left: 8px;
        }

        .nav-list a.nav-cta i {
            margin-right: 6px;
        }

        .nav-list a.nav-cta:hover {
            transform: translateY(-2px) scale(1.03);
            box-shadow: 0 0 35px rgba(240, 192, 64, 0.4);
            color: #0b0e17;
            background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-primary));
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }

            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(11, 14, 23, 0.98);
                backdrop-filter: blur(20px);
                padding: 16px 24px 28px;
                gap: 6px;
                border-bottom: 2px solid var(--clr-border);
                transform: translateY(-110%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
                max-height: calc(100vh - var(--header-height));
                overflow-y: auto;
                z-index: 999;
            }

            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav-list a {
                font-size: 17px;
                padding: 12px 20px;
                width: 100%;
                text-align: center;
                border-radius: var(--radius-md);
            }

            .nav-list a.active::after {
                display: none;
            }

            .nav-list a.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
                padding: 12px 24px;
            }
        }

        /* ===== Hero 板块 ===== */
        .guide-hero {
            padding: 140px 0 80px;
            background: linear-gradient(160deg, #0b0e17 0%, #131a2b 40%, #1a2340 70%, #0b0e17 100%);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--clr-border);
        }

        .guide-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(240, 192, 64, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .guide-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(61, 158, 255, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .guide-hero .container-custom {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .guide-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 192, 64, 0.12);
            border: 1px solid rgba(240, 192, 64, 0.25);
            color: var(--clr-primary);
            padding: 6px 20px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }

        .guide-hero h1 {
            font-size: 52px;
            font-weight: 900;
            color: var(--clr-text);
            margin-bottom: 20px;
            letter-spacing: 1px;
            text-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
        }

        .guide-hero h1 span {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .guide-hero p {
            font-size: 18px;
            color: var(--clr-text-muted);
            max-width: 720px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .guide-hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 32px;
        }

        .guide-hero-stats .stat-item {
            text-align: center;
        }

        .guide-hero-stats .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--clr-primary);
            display: block;
            line-height: 1.2;
        }

        .guide-hero-stats .stat-label {
            font-size: 14px;
            color: var(--clr-text-dim);
            font-weight: 400;
        }

        /* ===== 通用板块 ===== */
        .section-padding {
            padding: 80px 0;
        }

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

        .section-title {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            color: var(--clr-text);
        }

        .section-subtitle {
            font-size: 17px;
            color: var(--clr-text-muted);
            max-width: 600px;
            line-height: 1.7;
        }

        .section-header {
            margin-bottom: 44px;
            text-align: center;
        }

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

        .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--clr-primary), var(--clr-primary-light));
            border-radius: 3px;
            margin: 16px auto 0;
        }

        .section-header-left .section-divider {
            margin: 16px 0 0;
        }

        /* ===== 分类页通用 ===== */
        .page-main {
            padding-top: var(--header-height);
        }

        /* ===== 热门攻略卡片 (网格) ===== */
        .grid-guide-cards {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }

        .guide-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--clr-border);
            transition: var(--transition);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            border-color: var(--clr-primary-dark);
            box-shadow: var(--shadow-elevated), var(--shadow-glow);
        }

        .guide-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--clr-bg-elevated);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--clr-text-dim);
            font-size: 48px;
            position: relative;
            overflow: hidden;
        }

        .guide-card-img .img-placeholder {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #1a2340, #0f1420);
            color: var(--clr-text-dim);
        }

        .guide-card-img .game-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(11, 14, 23, 0.85);
            backdrop-filter: blur(6px);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            color: var(--clr-primary);
            border: 1px solid rgba(240, 192, 64, 0.2);
        }

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

        .guide-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 12px;
        }

        .guide-card-tag {
            font-size: 12px;
            padding: 3px 12px;
            border-radius: 20px;
            background: rgba(61, 158, 255, 0.1);
            color: var(--clr-info);
            border: 1px solid rgba(61, 158, 255, 0.15);
            font-weight: 500;
        }

        .guide-card-tag.hot {
            background: rgba(255, 107, 107, 0.1);
            color: var(--clr-accent);
            border-color: rgba(255, 107, 107, 0.2);
        }

        .guide-card-tag.new {
            background: rgba(46, 213, 115, 0.1);
            color: var(--clr-success);
            border-color: rgba(46, 213, 115, 0.2);
        }

        .guide-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--clr-text);
            line-height: 1.4;
        }

        .guide-card h3 a {
            color: inherit;
            transition: var(--transition);
        }
        .guide-card h3 a:hover {
            color: var(--clr-primary);
        }

        .guide-card p {
            font-size: 14px;
            color: var(--clr-text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .guide-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--clr-text-dim);
            border-top: 1px solid var(--clr-border);
            padding-top: 14px;
            margin-top: auto;
        }

        .guide-card-meta i {
            margin-right: 5px;
        }

        .guide-card-meta .rating {
            color: var(--clr-primary);
        }

        /* ===== 攻略分类筛选 ===== */
        .guide-filters {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }

        .guide-filter-btn {
            padding: 8px 24px;
            border-radius: 30px;
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            color: var(--clr-text-muted);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
        }

        .guide-filter-btn:hover {
            background: var(--clr-bg-elevated);
            border-color: var(--clr-primary-dark);
            color: var(--clr-text);
        }

        .guide-filter-btn.active {
            background: rgba(240, 192, 64, 0.15);
            border-color: var(--clr-primary);
            color: var(--clr-primary);
            box-shadow: 0 0 20px rgba(240, 192, 64, 0.1);
        }

        /* ===== 最新攻略列表 ===== */
        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .guide-list-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            padding: 18px 24px;
            border: 1px solid var(--clr-border);
            transition: var(--transition);
        }

        .guide-list-item:hover {
            border-color: var(--clr-border-light);
            background: var(--clr-bg-elevated);
            transform: translateX(4px);
        }

        .guide-list-item .list-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(240, 192, 64, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--clr-primary);
            font-size: 22px;
            flex-shrink: 0;
        }

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

        .guide-list-item .list-content h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .guide-list-item .list-content h4 a {
            color: var(--clr-text);
            transition: var(--transition);
        }
        .guide-list-item .list-content h4 a:hover {
            color: var(--clr-primary);
        }

        .guide-list-item .list-content p {
            font-size: 14px;
            color: var(--clr-text-muted);
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .guide-list-item .list-meta {
            flex-shrink: 0;
            font-size: 13px;
            color: var(--clr-text-dim);
            text-align: right;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .guide-list-item .list-meta .views {
            color: var(--clr-text-muted);
        }

        /* ===== 攻略专题/合集 ===== */
        .grid-topics {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 24px;
        }

        .topic-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--clr-border);
            text-align: center;
            transition: var(--transition);
        }

        .topic-card:hover {
            border-color: var(--clr-primary-dark);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }

        .topic-card .topic-icon {
            font-size: 40px;
            color: var(--clr-primary);
            margin-bottom: 16px;
        }

        .topic-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .topic-card p {
            font-size: 14px;
            color: var(--clr-text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .topic-card .topic-count {
            font-size: 13px;
            color: var(--clr-text-dim);
            background: rgba(240, 192, 64, 0.08);
            display: inline-block;
            padding: 4px 16px;
            border-radius: 20px;
        }

        /* ===== 攻略作者/贡献者 ===== */
        .grid-contributors {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 24px;
        }

        .contributor-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            border: 1px solid var(--clr-border);
            text-align: center;
            transition: var(--transition);
        }

        .contributor-card:hover {
            border-color: var(--clr-border-light);
            transform: translateY(-3px);
        }

        .contributor-card .avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 28px;
            color: #0b0e17;
            font-weight: 700;
        }

        .contributor-card h5 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .contributor-card p {
            font-size: 13px;
            color: var(--clr-text-dim);
            margin-bottom: 10px;
        }

        .contributor-card .contrib-stats {
            font-size: 13px;
            color: var(--clr-text-muted);
        }

        .contributor-card .contrib-stats i {
            color: var(--clr-primary);
            margin-right: 4px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--clr-border-light);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--clr-text);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }

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

        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--clr-primary);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--clr-text-muted);
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(160deg, #131a2b, #1a2340, #0b0e17);
            border-top: 1px solid var(--clr-border);
            border-bottom: 1px solid var(--clr-border);
            text-align: center;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section h2 span {
            color: var(--clr-primary);
        }

        .cta-section p {
            font-size: 17px;
            color: var(--clr-text-muted);
            max-width: 580px;
            margin: 0 auto 28px;
        }

        .cta-section .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            color: #0b0e17;
            box-shadow: 0 0 24px rgba(240, 192, 64, 0.2);
        }

        .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 0 40px rgba(240, 192, 64, 0.35);
            color: #0b0e17;
        }

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

        .btn-outline:hover {
            background: rgba(240, 192, 64, 0.1);
            transform: translateY(-3px);
            color: var(--clr-primary-light);
            border-color: var(--clr-primary-light);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 17px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #070a12;
            border-top: 1px solid var(--clr-border);
            padding: 56px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: var(--clr-primary);
            letter-spacing: 1px;
            display: block;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--clr-text-dim);
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: var(--clr-primary);
            border-radius: 2px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: var(--clr-text-dim);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--clr-primary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--clr-border);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--clr-text-dim);
        }

        .footer-bottom a {
            color: var(--clr-text-dim);
        }

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

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .guide-hero h1 {
                font-size: 42px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .guide-hero {
                padding: 120px 0 56px;
            }
            .guide-hero h1 {
                font-size: 32px;
            }
            .guide-hero p {
                font-size: 16px;
            }
            .guide-hero-stats {
                gap: 24px;
            }
            .guide-hero-stats .stat-number {
                font-size: 26px;
            }
            .section-title {
                font-size: 26px;
            }
            .section-padding {
                padding: 56px 0;
            }
            .grid-guide-cards {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
                gap: 20px;
            }
            .guide-list-item {
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 18px;
            }
            .guide-list-item .list-meta {
                text-align: left;
                flex-direction: row;
                gap: 16px;
                margin-top: 8px;
            }
            .grid-topics {
                grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            }
            .grid-contributors {
                grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .guide-hero h1 {
                font-size: 26px;
            }
            .guide-hero p {
                font-size: 15px;
            }
            .guide-hero-stats .stat-number {
                font-size: 22px;
            }
            .section-title {
                font-size: 22px;
            }
            .grid-guide-cards {
                grid-template-columns: 1fr;
            }
            .grid-topics {
                grid-template-columns: 1fr 1fr;
            }
            .grid-contributors {
                grid-template-columns: 1fr 1fr;
            }
            .guide-filters {
                gap: 6px;
            }
            .guide-filter-btn {
                padding: 6px 16px;
                font-size: 13px;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .text-primary {
            color: var(--clr-primary);
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: article */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        :root{
            --primary:#00d4ff;
            --primary-dark:#0099cc;
            --primary-glow:rgba(0,212,255,0.25);
            --primary-glow-strong:rgba(0,212,255,0.45);
            --secondary:#7c3aed;
            --secondary-glow:rgba(124,58,237,0.25);
            --accent:#f59e0b;
            --accent-glow:rgba(245,158,11,0.25);
            --bg-dark:#080c14;
            --bg-card:#0f1724;
            --bg-section:#0b1220;
            --bg-elevated:#141e30;
            --text-primary:#e8edf5;
            --text-secondary:#94a3b8;
            --text-muted:#5a6a82;
            --border-color:#1a2740;
            --border-glow:rgba(0,212,255,0.1);
            --radius-sm:6px;
            --radius:12px;
            --radius-lg:20px;
            --shadow-sm:0 2px 8px rgba(0,0,0,0.3);
            --shadow:0 8px 32px rgba(0,0,0,0.4);
            --shadow-lg:0 24px 64px rgba(0,0,0,0.5);
            --transition:0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
            --font-mono:'JetBrains Mono','Fira Code',monospace;
            --max-width:1200px;
            --header-height:72px
        }
        html{scroll-behavior:smooth}
        body{font-family:var(--font-sans);background:var(--bg-dark);color:var(--text-primary);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
        a{color:var(--primary);text-decoration:none;transition:var(--transition)}
        a:hover{color:#66e5ff}
        img{max-width:100%;height:auto;display:block}
        ul,ol{list-style:none}
        .container-custom{max-width:var(--max-width);margin:0 auto;padding:0 24px;width:100%}
        .text-center{text-align:center}
        .text-gradient{background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
        .section-title{font-size:2.2rem;font-weight:700;margin-bottom:0.75rem;line-height:1.25;letter-spacing:-0.02em}
        .section-subtitle{font-size:1.1rem;color:var(--text-secondary);max-width:640px;margin:0 auto 2.5rem;line-height:1.6}
        .section-padding{padding:5rem 0}
        .glow-line{width:60px;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:3px;margin:0 auto 1.5rem;box-shadow:0 0 20px var(--primary-glow)}

        /* Header & Navigation */
        .site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(8,12,20,0.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-color);height:var(--header-height);transition:var(--transition)}
        .header-inner{max-width:var(--max-width);margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;justify-content:space-between}
        .site-logo{font-size:1.5rem;font-weight:800;color:var(--text-primary);letter-spacing:-0.03em;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-decoration:none;transition:var(--transition)}
        .site-logo:hover{opacity:0.85;color:var(--text-primary)}
        .nav-list{display:flex;align-items:center;gap:8px}
        .nav-list a{color:var(--text-secondary);font-size:0.95rem;font-weight:500;padding:8px 18px;border-radius:var(--radius-sm);transition:var(--transition);position:relative;text-decoration:none}
        .nav-list a:hover{color:var(--text-primary);background:rgba(255,255,255,0.04)}
        .nav-list a.active{color:var(--primary);background:rgba(0,212,255,0.08);text-shadow:0 0 20px var(--primary-glow)}
        .nav-list a.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:20px;height:2px;background:var(--primary);border-radius:2px;box-shadow:0 0 12px var(--primary-glow)}
        .nav-list a.nav-cta{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;font-weight:600;padding:8px 24px;border-radius:var(--radius);box-shadow:0 4px 20px var(--primary-glow);text-shadow:none}
        .nav-list a.nav-cta:hover{box-shadow:0 6px 28px var(--primary-glow-strong);transform:translateY(-1px);color:#fff;background:linear-gradient(135deg,#33ddff,var(--primary-dark))}
        .nav-toggle{display:none;background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer;padding:8px;border-radius:var(--radius-sm);transition:var(--transition)}
        .nav-toggle:hover{background:rgba(255,255,255,0.06)}

        /* Article Hero */
        .article-hero{padding:calc(var(--header-height) + 3rem) 0 2.5rem;position:relative;background:linear-gradient(180deg,rgba(0,212,255,0.04),transparent 60%)}
        .article-hero .container-custom{max-width:860px}
        .article-breadcrumb{display:flex;align-items:center;gap:8px;font-size:0.85rem;color:var(--text-muted);margin-bottom:1.5rem;flex-wrap:wrap}
        .article-breadcrumb a{color:var(--text-secondary);text-decoration:none}
        .article-breadcrumb a:hover{color:var(--primary)}
        .article-breadcrumb .sep{color:var(--text-muted)}
        .article-category{display:inline-block;background:rgba(0,212,255,0.12);color:var(--primary);font-size:0.8rem;font-weight:600;padding:4px 14px;border-radius:20px;margin-bottom:1rem;border:1px solid rgba(0,212,255,0.15);letter-spacing:0.3px}
        .article-title{font-size:2.6rem;font-weight:800;line-height:1.2;margin-bottom:1.2rem;letter-spacing:-0.02em;color:var(--text-primary)}
        .article-meta{display:flex;align-items:center;gap:20px;flex-wrap:wrap;color:var(--text-muted);font-size:0.9rem;margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border-color)}
        .article-meta i{margin-right:6px;color:var(--text-muted)}
        .article-meta span{display:flex;align-items:center}
        .article-description{font-size:1.15rem;color:var(--text-secondary);line-height:1.7;margin-bottom:1rem}

        /* Article Content */
        .article-content-wrap{padding:2.5rem 0 4rem}
        .article-content-wrap .container-custom{max-width:860px}
        .article-body{font-size:1.05rem;line-height:1.85;color:var(--text-primary)}
        .article-body p{margin-bottom:1.25rem}
        .article-body h2{font-size:1.7rem;font-weight:700;margin:2.5rem 0 1rem;color:var(--text-primary);letter-spacing:-0.01em}
        .article-body h3{font-size:1.35rem;font-weight:600;margin:2rem 0 0.75rem;color:var(--text-primary)}
        .article-body h4{font-size:1.15rem;font-weight:600;margin:1.5rem 0 0.5rem;color:var(--text-secondary)}
        .article-body ul,.article-body ol{margin:0 0 1.25rem 1.5rem}
        .article-body ul li{list-style:disc;margin-bottom:0.4rem;color:var(--text-secondary)}
        .article-body ol li{list-style:decimal;margin-bottom:0.4rem;color:var(--text-secondary)}
        .article-body blockquote{border-left:3px solid var(--primary);padding:1rem 1.5rem;margin:1.5rem 0;background:rgba(0,212,255,0.04);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary);font-style:italic}
        .article-body blockquote p:last-child{margin-bottom:0}
        .article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:2px}
        .article-body a:hover{color:#66e5ff}
        .article-body code{font-family:var(--font-mono);background:rgba(255,255,255,0.06);padding:2px 8px;border-radius:4px;font-size:0.9em;color:var(--accent)}
        .article-body pre{background:var(--bg-elevated);padding:1.25rem;border-radius:var(--radius);overflow-x:auto;margin:1.5rem 0;border:1px solid var(--border-color);font-size:0.9rem}
        .article-body pre code{background:transparent;padding:0;color:var(--text-primary);font-size:0.9rem}
        .article-body img{border-radius:var(--radius);margin:1.5rem 0;box-shadow:var(--shadow)}
        .article-body hr{margin:2rem 0;border:none;height:1px;background:var(--border-color)}

        /* Article Tags & Share */
        .article-footer-bar{padding:1.5rem 0;border-top:1px solid var(--border-color);margin-top:2rem;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
        .article-tags{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
        .article-tags .tag-label{color:var(--text-muted);font-size:0.9rem}
        .article-tags .tag-item{display:inline-block;background:rgba(255,255,255,0.04);color:var(--text-secondary);font-size:0.8rem;padding:4px 14px;border-radius:20px;border:1px solid var(--border-color);transition:var(--transition);text-decoration:none}
        .article-tags .tag-item:hover{background:rgba(0,212,255,0.08);color:var(--primary);border-color:rgba(0,212,255,0.2)}
        .article-share{display:flex;align-items:center;gap:8px}
        .article-share span{color:var(--text-muted);font-size:0.9rem}
        .article-share a{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,0.04);color:var(--text-secondary);border:1px solid var(--border-color);transition:var(--transition);text-decoration:none;font-size:0.9rem}
        .article-share a:hover{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 0 20px var(--primary-glow)}

        /* Not Found */
        .not-found-block{text-align:center;padding:4rem 2rem}
        .not-found-block i{font-size:3rem;color:var(--text-muted);margin-bottom:1.5rem}
        .not-found-block h2{font-size:1.6rem;color:var(--text-primary);margin-bottom:0.75rem}
        .not-found-block p{color:var(--text-secondary);margin-bottom:1.5rem;font-size:1.05rem}
        .not-found-block .btn-back{display:inline-flex;align-items:center;gap:8px;background:var(--primary);color:#fff;padding:12px 32px;border-radius:var(--radius);font-weight:600;transition:var(--transition);text-decoration:none;box-shadow:0 4px 20px var(--primary-glow)}
        .not-found-block .btn-back:hover{box-shadow:0 6px 28px var(--primary-glow-strong);transform:translateY(-2px);color:#fff}

        /* Related Articles */
        .related-section{background:var(--bg-section);padding:4rem 0}
        .related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;margin-top:1rem}
        .related-card{background:var(--bg-card);border-radius:var(--radius);border:1px solid var(--border-color);padding:1.5rem;transition:var(--transition);display:flex;flex-direction:column}
        .related-card:hover{border-color:rgba(0,212,255,0.2);box-shadow:var(--shadow);transform:translateY(-4px)}
        .related-card .card-cat{font-size:0.75rem;color:var(--primary);font-weight:600;margin-bottom:0.6rem;text-transform:uppercase;letter-spacing:0.5px}
        .related-card .card-title{font-size:1.05rem;font-weight:600;color:var(--text-primary);margin-bottom:0.6rem;line-height:1.4;transition:var(--transition)}
        .related-card:hover .card-title{color:var(--primary)}
        .related-card .card-excerpt{font-size:0.9rem;color:var(--text-secondary);line-height:1.6;margin-bottom:1rem;flex:1}
        .related-card .card-meta{font-size:0.8rem;color:var(--text-muted);display:flex;align-items:center;gap:12px}
        .related-card .card-meta i{margin-right:4px}

        /* FAQ Section */
        .faq-section{padding:4rem 0}
        .faq-grid{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
        .faq-item{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);overflow:hidden;transition:var(--transition)}
        .faq-item:hover{border-color:rgba(0,212,255,0.12)}
        .faq-question{display:flex;align-items:center;justify-content:space-between;padding:1.25rem 1.5rem;cursor:pointer;font-size:1rem;font-weight:500;color:var(--text-primary);transition:var(--transition);background:none;border:none;width:100%;text-align:left;gap:12px}
        .faq-question:hover{color:var(--primary)}
        .faq-question i{color:var(--text-muted);transition:var(--transition);font-size:0.9rem;flex-shrink:0}
        .faq-item.active .faq-question i{transform:rotate(180deg);color:var(--primary)}
        .faq-answer{padding:0 1.5rem 1.25rem;color:var(--text-secondary);font-size:0.95rem;line-height:1.7;display:none}
        .faq-item.active .faq-answer{display:block}
        .faq-item.active{border-color:rgba(0,212,255,0.2)}

        /* CTA Section */
        .cta-section{background:linear-gradient(135deg,rgba(0,212,255,0.06),rgba(124,58,237,0.06));border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color);padding:4rem 0;text-align:center}
        .cta-section h2{font-size:2rem;font-weight:700;margin-bottom:0.75rem;color:var(--text-primary)}
        .cta-section p{color:var(--text-secondary);max-width:560px;margin:0 auto 2rem;font-size:1.05rem}
        .cta-actions{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}
        .btn-primary{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;padding:14px 36px;border-radius:var(--radius);font-weight:600;font-size:1rem;transition:var(--transition);text-decoration:none;box-shadow:0 4px 20px var(--primary-glow);border:none;cursor:pointer}
        .btn-primary:hover{box-shadow:0 8px 32px var(--primary-glow-strong);transform:translateY(-2px);color:#fff}
        .btn-secondary{display:inline-flex;align-items:center;gap:8px;background:transparent;color:var(--text-primary);padding:13px 36px;border-radius:var(--radius);font-weight:500;font-size:1rem;transition:var(--transition);text-decoration:none;border:1px solid var(--border-color)}
        .btn-secondary:hover{border-color:var(--primary);color:var(--primary);background:rgba(0,212,255,0.04);transform:translateY(-2px)}

        /* Footer */
        .site-footer{background:var(--bg-card);border-top:1px solid var(--border-color);padding:4rem 0 0}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1.2fr;gap:40px;margin-bottom:2.5rem}
        .footer-brand .logo-text{font-size:1.5rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:inline-block;margin-bottom:1rem}
        .footer-brand p{color:var(--text-secondary);font-size:0.9rem;line-height:1.7;max-width:360px}
        .footer-col h4{font-size:0.95rem;font-weight:600;color:var(--text-primary);margin-bottom:1.2rem;letter-spacing:0.3px}
        .footer-col ul li{margin-bottom:0.6rem}
        .footer-col ul li a{color:var(--text-secondary);font-size:0.9rem;transition:var(--transition);text-decoration:none}
        .footer-col ul li a:hover{color:var(--primary);padding-left:4px}
        .footer-bottom{border-top:1px solid var(--border-color);padding:1.5rem 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:0.85rem;color:var(--text-muted)}
        .footer-bottom a{color:var(--text-muted);text-decoration:none;transition:var(--transition)}
        .footer-bottom a:hover{color:var(--primary)}

        /* Responsive */
        @media (max-width:1024px){
            .article-title{font-size:2.2rem}
            .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
        }
        @media (max-width:768px){
            .nav-toggle{display:block}
            .nav-list{position:fixed;top:var(--header-height);left:0;right:0;background:rgba(8,12,20,0.98);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);flex-direction:column;padding:20px;gap:4px;border-bottom:1px solid var(--border-color);transform:translateY(-120%);opacity:0;visibility:hidden;transition:all 0.4s cubic-bezier(0.4,0,0.2,1);box-shadow:var(--shadow-lg)}
            .nav-list.open{transform:translateY(0);opacity:1;visibility:visible}
            .nav-list a{width:100%;padding:12px 18px;font-size:1rem}
            .nav-list a.nav-cta{margin-top:8px;text-align:center}
            .section-title{font-size:1.7rem}
            .article-title{font-size:1.8rem}
            .article-hero{padding:calc(var(--header-height) + 2rem) 0 1.5rem}
            .article-body{font-size:1rem}
            .related-grid{grid-template-columns:1fr 1fr}
            .footer-grid{grid-template-columns:1fr;gap:24px}
            .footer-bottom{flex-direction:column;text-align:center}
            .cta-section h2{font-size:1.6rem}
            .section-padding{padding:3rem 0}
        }
        @media (max-width:520px){
            .container-custom{padding:0 16px}
            .article-title{font-size:1.5rem}
            .related-grid{grid-template-columns:1fr}
            .article-meta{flex-direction:column;gap:8px;align-items:flex-start}
            .article-footer-bar{flex-direction:column;align-items:flex-start}
            .section-title{font-size:1.4rem}
            .section-subtitle{font-size:0.95rem}
            .btn-primary,.btn-secondary{padding:12px 28px;font-size:0.95rem}
            .cta-actions{flex-direction:column;width:100%}
            .cta-actions .btn-primary,.cta-actions .btn-secondary{width:100%;justify-content:center}
            .faq-question{padding:1rem 1.25rem;font-size:0.95rem}
            .faq-answer{padding:0 1.25rem 1rem;font-size:0.9rem}
        }

        /* Foundation override for dark theme */
        .grid-container{max-width:var(--max-width);padding:0 24px}
        @media (max-width:520px){.grid-container{padding:0 16px}}
        .grid-x{display:flex;flex-wrap:wrap}
        .cell{padding:0}