/* roulang page: index */
/* ===== CSS 设计变量 ===== */
    :root {
        --primary: #2563eb;
        --primary-dark: #1d4ed8;
        --primary-light: #3b82f6;
        --primary-soft: #dbeafe;
        --accent: #f59e0b;
        --accent-dark: #d97706;
        --accent-light: #fbbf24;
        --accent-soft: #fef3c7;
        --dark: #0f172a;
        --dark-2: #1e293b;
        --dark-3: #334155;
        --light: #f8fafc;
        --light-2: #f1f5f9;
        --light-3: #e2e8f0;
        --text: #1e293b;
        --text-light: #64748b;
        --text-white: #f1f5f9;
        --border: #e2e8f0;
        --border-light: #f1f5f9;
        --shadow-sm: 0 1px 2px rgba(15,23,42,0.06);
        --shadow: 0 4px 6px -1px rgba(15,23,42,0.08), 0 2px 4px -2px rgba(15,23,42,0.05);
        --shadow-md: 0 10px 15px -3px rgba(15,23,42,0.10), 0 4px 6px -4px rgba(15,23,42,0.05);
        --shadow-lg: 0 20px 25px -5px rgba(15,23,42,0.12), 0 8px 10px -6px rgba(15,23,42,0.06);
        --shadow-xl: 0 25px 50px -12px rgba(15,23,42,0.20);
        --radius-sm: 6px;
        --radius: 12px;
        --radius-md: 16px;
        --radius-lg: 24px;
        --radius-xl: 32px;
        --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        --container: 1200px;
        --header-h: 72px;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
    body {
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.6;
        color: var(--text);
        background: var(--light);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--primary-dark); }
    a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 2px; }
    button, input, textarea, select { font: inherit; color: inherit; }
    button { cursor: pointer; border: none; background: none; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--dark); }
    h1 { font-size: clamp(2.2rem, 5.5vw, 3.8rem); }
    h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
    h3 { font-size: clamp(1.2rem, 2.2vw, 1.5rem); }
    h4 { font-size: 1.125rem; }
    p { margin-bottom: 1rem; }
    p:last-child { margin-bottom: 0; }

    /* ===== Container ===== */
    .container {
        max-width: var(--container);
        margin: 0 auto;
        padding: 0 24px;
    }
    .container-sm { max-width: 900px; }
    .container-wide { max-width: 1360px; }

    /* ===== Utility ===== */
    .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }
    .text-center { text-align: center; }
    .text-light { color: var(--text-light); }
    .text-white { color: var(--text-white); }
    .mt-1 { margin-top: 0.5rem; }
    .mt-2 { margin-top: 1rem; }
    .mt-4 { margin-top: 2rem; }
    .mb-2 { margin-bottom: 1rem; }
    .mb-4 { margin-bottom: 2rem; }
    .gap-2 { gap: 1rem; }
    .gap-4 { gap: 2rem; }
    .flex { display: flex; }
    .flex-wrap { flex-wrap: wrap; }
    .items-center { align-items: center; }
    .justify-between { justify-content: space-between; }
    .justify-center { justify-content: center; }

    /* ===== Section Spacing ===== */
    .section { padding: 80px 0; }
    .section-sm { padding: 48px 0; }
    .section-lg { padding: 100px 0; }
    .section-title {
        text-align: center;
        margin-bottom: 16px;
    }
    .section-subtitle {
        text-align: center;
        font-size: 1.1rem;
        color: var(--text-light);
        max-width: 640px;
        margin: 0 auto 48px auto;
    }
    .section-divider {
        width: 60px;
        height: 4px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
        border-radius: 4px;
        margin: 12px auto 16px auto;
    }

    /* ===== Header & Navigation ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: var(--header-h);
        background: rgba(15, 23, 42, 0.92);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(255,255,255,0.06);
        z-index: 1000;
        transition: background var(--transition);
    }
    .site-header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.35rem;
        font-weight: 800;
        color: #fff;
        letter-spacing: -0.02em;
    }
    .logo i { color: var(--accent); font-size: 1.5rem; }
    .logo span { background: linear-gradient(135deg, #fff 60%, var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .logo:hover { color: #fff; opacity: 0.9; }

    .main-nav { display: flex; align-items: center; gap: 8px; }
    .main-nav a {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 8px 18px;
        border-radius: var(--radius-sm);
        font-size: 0.9rem;
        font-weight: 500;
        color: rgba(255,255,255,0.75);
        transition: all var(--transition);
        position: relative;
    }
    .main-nav a i { font-size: 0.85rem; opacity: 0.6; }
    .main-nav a:hover,
    .main-nav a:focus-visible {
        color: #fff;
        background: rgba(255,255,255,0.08);
    }
    .main-nav a.active {
        color: #fff;
        background: var(--primary);
        box-shadow: 0 4px 12px rgba(37,99,235,0.35);
    }
    .main-nav a.active i { opacity: 1; }

    .nav-cta {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 8px 22px;
        border-radius: var(--radius-sm);
        font-size: 0.9rem;
        font-weight: 600;
        color: #fff;
        background: linear-gradient(135deg, var(--accent), var(--accent-dark));
        box-shadow: 0 4px 14px rgba(245,158,11,0.30);
        transition: all var(--transition);
        margin-left: 8px;
    }
    .nav-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(245,158,11,0.40); color: #fff; }
    .nav-cta:active { transform: translateY(0); }

    /* Mobile hamburger */
    .nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 6px; cursor: pointer; background: none; border: none; }
    .nav-toggle span { display: block; width: 26px; height: 2.5px; background: #fff; border-radius: 4px; transition: all var(--transition); }
    .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .nav-toggle.open span:nth-child(2) { opacity: 0; }
    .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

    /* ===== Hero ===== */
    .hero {
        position: relative;
        min-height: 92vh;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--dark) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        color: #fff;
        padding: 120px 0 80px;
        overflow: hidden;
    }
    .hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(15,23,42,0.88) 0%, rgba(15,23,42,0.60) 50%, rgba(37,99,235,0.25) 100%);
        z-index: 1;
    }
    .hero .container { position: relative; z-index: 2; text-align: center; }
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 6px 18px;
        border-radius: 50px;
        background: rgba(255,255,255,0.10);
        backdrop-filter: blur(8px);
        border: 1px solid rgba(255,255,255,0.15);
        font-size: 0.85rem;
        font-weight: 500;
        color: var(--accent-light);
        margin-bottom: 24px;
    }
    .hero-badge i { font-size: 0.75rem; }
    .hero h1 {
        font-weight: 800;
        letter-spacing: -0.03em;
        margin-bottom: 20px;
        color: #fff;
    }
    .hero h1 .highlight { background: linear-gradient(135deg, var(--accent-light), #fff); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .hero p {
        font-size: 1.2rem;
        line-height: 1.7;
        color: rgba(255,255,255,0.80);
        max-width: 640px;
        margin: 0 auto 36px auto;
    }
    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        justify-content: center;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 14px 32px;
        border-radius: var(--radius-sm);
        font-size: 1rem;
        font-weight: 600;
        transition: all var(--transition);
        border: none;
        cursor: pointer;
        line-height: 1.2;
    }
    .btn-primary {
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        color: #fff;
        box-shadow: 0 4px 16px rgba(37,99,235,0.35);
    }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(37,99,235,0.45); color: #fff; }
    .btn-primary:active { transform: translateY(0); }

    .btn-accent {
        background: linear-gradient(135deg, var(--accent), var(--accent-dark));
        color: #fff;
        box-shadow: 0 4px 16px rgba(245,158,11,0.35);
    }
    .btn-accent:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(245,158,11,0.45); color: #fff; }
    .btn-accent:active { transform: translateY(0); }

    .btn-outline-light {
        background: transparent;
        color: #fff;
        border: 2px solid rgba(255,255,255,0.30);
    }
    .btn-outline-light:hover { background: rgba(255,255,255,0.10); border-color: rgba(255,255,255,0.60); color: #fff; }
    .btn-outline-light:active { background: rgba(255,255,255,0.18); }

    .btn-sm { padding: 10px 20px; font-size: 0.9rem; }

    .hero-stats {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 48px;
        margin-top: 56px;
        padding-top: 32px;
        border-top: 1px solid rgba(255,255,255,0.10);
    }
    .hero-stat-item { text-align: center; }
    .hero-stat-item .num { font-size: 2rem; font-weight: 800; color: #fff; letter-spacing: -0.02em; }
    .hero-stat-item .label { font-size: 0.85rem; color: rgba(255,255,255,0.60); margin-top: 4px; }

    /* ===== Features / 平台特色 ===== */
    .features-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 32px;
    }
    .feature-card {
        background: #fff;
        padding: 36px 28px;
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        border: 1px solid var(--border);
        transition: all var(--transition);
        text-align: center;
    }
    .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary-soft); }
    .feature-card .icon {
        width: 64px;
        height: 64px;
        border-radius: var(--radius);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 18px auto;
        font-size: 1.6rem;
        background: var(--primary-soft);
        color: var(--primary);
    }
    .feature-card:nth-child(2) .icon { background: var(--accent-soft); color: var(--accent-dark); }
    .feature-card:nth-child(3) .icon { background: #ede9fe; color: #7c3aed; }
    .feature-card h3 { margin-bottom: 8px; }
    .feature-card p { font-size: 0.95rem; color: var(--text-light); margin-bottom: 0; }

    /* ===== Hot Games / 热门游戏 ===== */
    .bg-soft { background: var(--light-2); }
    .games-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .game-card {
        background: #fff;
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow);
        border: 1px solid var(--border);
        transition: all var(--transition);
    }
    .game-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .game-card .thumb {
        aspect-ratio: 16 / 9;
        background: var(--dark-2);
        overflow: hidden;
        position: relative;
    }
    .game-card .thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .game-card:hover .thumb img { transform: scale(1.05); }
    .game-card .thumb .tag {
        position: absolute;
        top: 12px;
        left: 12px;
        padding: 4px 12px;
        border-radius: 50px;
        font-size: 0.75rem;
        font-weight: 600;
        background: var(--primary);
        color: #fff;
        backdrop-filter: blur(4px);
    }
    .game-card .info { padding: 20px 22px 22px; }
    .game-card .info h3 { font-size: 1.1rem; margin-bottom: 6px; }
    .game-card .info p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 12px; }
    .game-card .info .meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.85rem; color: var(--text-light); }
    .game-card .info .meta i { margin-right: 4px; }
    .game-card .info .meta .star { color: var(--accent); }

    /* ===== Latest News / 最新资讯 ===== */
    .news-list { display: flex; flex-direction: column; gap: 16px; }
    .news-item {
        display: flex;
        align-items: center;
        gap: 20px;
        background: #fff;
        padding: 18px 24px;
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border);
        transition: all var(--transition);
    }
    .news-item:hover { box-shadow: var(--shadow); border-color: var(--primary-soft); }
    .news-item .date {
        flex-shrink: 0;
        width: 56px;
        text-align: center;
        font-size: 0.8rem;
        color: var(--text-light);
        line-height: 1.3;
    }
    .news-item .date .day { font-size: 1.3rem; font-weight: 700; color: var(--dark); display: block; }
    .news-item .content { flex: 1; min-width: 0; }
    .news-item .content h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
    .news-item .content h4 a { color: var(--dark); }
    .news-item .content h4 a:hover { color: var(--primary); }
    .news-item .content p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .news-item .cat {
        flex-shrink: 0;
        padding: 4px 14px;
        border-radius: 50px;
        font-size: 0.75rem;
        font-weight: 600;
        background: var(--primary-soft);
        color: var(--primary);
    }

    /* ===== Platform Data / 平台数据 ===== */
    .data-section {
        background: var(--dark) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        color: #fff;
        position: relative;
    }
    .data-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: rgba(15,23,42,0.82);
    }
    .data-section .container { position: relative; z-index: 1; }
    .data-section .section-title { color: #fff; }
    .data-section .section-subtitle { color: rgba(255,255,255,0.70); }
    .data-section .section-divider { background: linear-gradient(90deg, var(--accent), #fff); }
    .data-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 28px;
        margin-top: 16px;
    }
    .data-card {
        text-align: center;
        padding: 32px 16px;
        background: rgba(255,255,255,0.06);
        border-radius: var(--radius);
        border: 1px solid rgba(255,255,255,0.08);
        backdrop-filter: blur(6px);
        transition: all var(--transition);
    }
    .data-card:hover { background: rgba(255,255,255,0.10); transform: translateY(-2px); }
    .data-card .num { font-size: 2.4rem; font-weight: 800; color: var(--accent-light); letter-spacing: -0.02em; }
    .data-card .label { font-size: 0.9rem; color: rgba(255,255,255,0.70); margin-top: 6px; }

    /* ===== Game Categories / 游戏分类标签 ===== */
    .cats-grid {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 14px;
    }
    .cat-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 24px;
        border-radius: 50px;
        font-size: 0.9rem;
        font-weight: 500;
        background: #fff;
        color: var(--text);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        transition: all var(--transition);
    }
    .cat-tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(37,99,235,0.25); }
    .cat-tag i { font-size: 0.85rem; opacity: 0.7; }
    .cat-tag:hover i { opacity: 1; }

    /* ===== FAQ ===== */
    .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
    .faq-item {
        background: #fff;
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border);
        overflow: hidden;
        transition: all var(--transition);
    }
    .faq-item:hover { box-shadow: var(--shadow); }
    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 24px;
        font-weight: 600;
        font-size: 1rem;
        cursor: pointer;
        background: none;
        border: none;
        width: 100%;
        text-align: left;
        color: var(--dark);
        transition: background var(--transition);
        gap: 16px;
    }
    .faq-question:hover { background: var(--light-2); }
    .faq-question i { font-size: 0.85rem; color: var(--text-light); transition: transform var(--transition); flex-shrink: 0; }
    .faq-item.open .faq-question i { transform: rotate(180deg); }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.35s ease;
        padding: 0 24px;
        color: var(--text-light);
        font-size: 0.95rem;
        line-height: 1.7;
    }
    .faq-item.open .faq-answer {
        max-height: 240px;
        padding: 0 24px 20px 24px;
    }

    /* ===== CTA ===== */
    .cta-section {
        background: linear-gradient(135deg, var(--primary-dark), var(--dark-2));
        color: #fff;
        text-align: center;
        padding: 72px 0;
    }
    .cta-section h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: 12px; }
    .cta-section p { color: rgba(255,255,255,0.75); max-width: 560px; margin: 0 auto 28px auto; font-size: 1.05rem; }
    .cta-section .btn { font-size: 1.05rem; padding: 16px 40px; }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--dark);
        color: rgba(255,255,255,0.65);
        padding: 48px 0 32px;
        border-top: 1px solid rgba(255,255,255,0.05);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 32px;
        border-bottom: 1px solid rgba(255,255,255,0.06);
        margin-bottom: 24px;
    }
    .footer-brand .logo { font-size: 1.2rem; margin-bottom: 12px; }
    .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.55); max-width: 320px; }
    .footer-col h4 { font-size: 0.95rem; font-weight: 600; color: #fff; margin-bottom: 16px; }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-col ul li a { font-size: 0.9rem; color: rgba(255,255,255,0.55); transition: all var(--transition); }
    .footer-col ul li a:hover { color: var(--accent-light); padding-left: 4px; }
    .footer-bottom {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        font-size: 0.85rem;
        color: rgba(255,255,255,0.40);
    }
    .footer-bottom a { color: rgba(255,255,255,0.50); }
    .footer-bottom a:hover { color: var(--accent-light); }
    .footer-social { display: flex; gap: 12px; }
    .footer-social a {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: rgba(255,255,255,0.06);
        color: rgba(255,255,255,0.50);
        font-size: 0.95rem;
        transition: all var(--transition);
    }
    .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

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

    @media (max-width: 768px) {
        .site-header .container { padding: 0 16px; }
        .nav-toggle { display: flex; }
        .main-nav {
            position: fixed;
            top: var(--header-h);
            left: 0;
            width: 100%;
            flex-direction: column;
            background: rgba(15,23,42,0.98);
            backdrop-filter: blur(16px);
            padding: 20px 24px 28px;
            gap: 6px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transform: translateY(-110%);
            opacity: 0;
            transition: all 0.35s ease;
            pointer-events: none;
            box-shadow: var(--shadow-lg);
        }
        .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
        .main-nav a { width: 100%; padding: 12px 16px; font-size: 1rem; }
        .nav-cta { width: 100%; justify-content: center; margin-left: 0; margin-top: 8px; }
        .hero { min-height: 80vh; padding: 100px 0 60px; }
        .hero h1 { font-size: clamp(1.8rem, 6vw, 2.6rem); }
        .hero p { font-size: 1rem; }
        .hero-stats { gap: 24px; margin-top: 36px; }
        .hero-stat-item .num { font-size: 1.5rem; }
        .features-grid { grid-template-columns: 1fr; }
        .games-grid { grid-template-columns: 1fr; }
        .data-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
        .news-item { flex-wrap: wrap; gap: 12px; padding: 16px; }
        .news-item .date { width: 48px; }
        .news-item .cat { margin-left: auto; }
        .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .section { padding: 56px 0; }
        .section-lg { padding: 64px 0; }
    }

    @media (max-width: 520px) {
        :root { --header-h: 64px; }
        .container { padding: 0 16px; }
        .hero-stats { flex-direction: column; gap: 16px; }
        .hero-stat-item { display: flex; align-items: center; gap: 12px; justify-content: center; }
        .data-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
        .data-card { padding: 20px 12px; }
        .data-card .num { font-size: 1.8rem; }
        .faq-question { padding: 14px 16px; font-size: 0.95rem; }
        .faq-answer { padding: 0 16px; }
        .faq-item.open .faq-answer { padding: 0 16px 16px 16px; }
        .cta-section { padding: 48px 0; }
        .btn { padding: 12px 24px; font-size: 0.95rem; }
    }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #2563eb;
            --color-primary-dark: #1d4ed8;
            --color-primary-light: #3b82f6;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-bg: #0f172a;
            --color-bg-card: #1e293b;
            --color-bg-section: #1e293b;
            --color-bg-alt: #0f172a;
            --color-text: #f1f5f9;
            --color-text-muted: #94a3b8;
            --color-text-dim: #64748b;
            --color-border: #334155;
            --color-border-light: #475569;
            --color-success: #10b981;
            --color-danger: #ef4444;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.25);
            --transition: 0.25s ease;
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --container-max: 1200px;
            --nav-height: 70px;
            --spacing-section: 90px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.65;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: #fff;
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
        }
        p {
            margin-bottom: 1em;
            color: var(--color-text-muted);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            line-height: 1.2;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            box-shadow: var(--shadow-sm);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        .btn-secondary {
            background: transparent;
            color: var(--color-text);
            border-color: var(--color-border-light);
        }
        .btn-secondary:hover {
            border-color: var(--color-primary-light);
            color: var(--color-primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-accent {
            background: var(--color-accent);
            color: #0f172a;
            border-color: var(--color-accent);
            font-weight: 700;
        }
        .btn-accent:hover {
            background: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
            color: #0f172a;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.875rem;
            border-radius: 30px;
        }
        .btn-lg {
            padding: 18px 42px;
            font-size: 1.1rem;
        }
        .btn:focus-visible {
            outline: 3px solid var(--color-accent);
            outline-offset: 3px;
        }

        /* ===== 标签 / 徽章 ===== */
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: var(--color-border);
            color: var(--color-text-muted);
            transition: all var(--transition);
        }
        .tag-action {
            background: rgba(239, 68, 68, 0.18);
            color: #f87171;
        }
        .tag-adventure {
            background: rgba(37, 99, 235, 0.18);
            color: #60a5fa;
        }
        .tag-strategy {
            background: rgba(245, 158, 11, 0.18);
            color: #fbbf24;
        }
        .tag-sports {
            background: rgba(16, 185, 129, 0.18);
            color: #34d399;
        }
        .tag-rpg {
            background: rgba(168, 85, 247, 0.18);
            color: #c084fc;
        }
        .tag-casual {
            background: rgba(236, 72, 153, 0.18);
            color: #f472b6;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 700;
            background: var(--color-primary);
            color: #fff;
        }
        .badge-hot {
            background: var(--color-danger);
        }
        .badge-top {
            background: var(--color-accent);
            color: #0f172a;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: background var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: #fff;
            transition: opacity var(--transition);
        }
        .logo i {
            color: var(--color-accent);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, #fff 60%, var(--color-primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.85;
            color: #fff;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-muted);
            transition: all var(--transition);
            position: relative;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a i {
            font-size: 0.85rem;
        }
        .main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .main-nav a.active {
            color: #fff;
            background: var(--color-primary);
            box-shadow: var(--shadow-sm);
        }
        .main-nav a.active:hover {
            background: var(--color-primary-dark);
        }
        .main-nav .nav-cta {
            background: var(--color-accent);
            color: #0f172a;
            font-weight: 700;
            padding: 8px 22px;
            border-radius: 30px;
            margin-left: 8px;
        }
        .main-nav .nav-cta:hover {
            background: var(--color-accent-dark);
            color: #0f172a;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px 4px;
            background: transparent;
            border: none;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--color-text);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }
        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(15, 23, 42, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.35s ease;
                border-bottom: 1px solid var(--color-border);
                pointer-events: none;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 20px;
                font-size: 1.05rem;
                border-radius: var(--radius-sm);
            }
            .main-nav .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            :root {
                --spacing-section: 50px;
            }
            .container {
                padding: 0 16px;
            }
            h1 {
                font-size: 1.65rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 1rem;
            }
            .logo span {
                font-size: 1.1rem;
            }
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            padding: calc(var(--nav-height) + 50px) 0 60px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            position: relative;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .page-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 30%;
            opacity: 0.15;
            z-index: 0;
        }
        .page-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.2) 0%, transparent 70%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 3rem;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 30%, var(--color-primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            font-size: 1.15rem;
            max-width: 680px;
            margin: 0 auto 28px;
            color: var(--color-text-muted);
        }
        .page-hero .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .page-hero {
                min-height: 300px;
                padding: calc(var(--nav-height) + 30px) 0 40px;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .page-hero .hero-actions {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-card-bg {
            background: var(--color-bg-section);
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-title h2 {
            margin-bottom: 12px;
        }
        .section-title p {
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-title .title-icon {
            font-size: 2rem;
            color: var(--color-accent);
            margin-bottom: 8px;
        }

        /* ===== 游戏分类标签 ===== */
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .filter-tags .tag {
            padding: 8px 22px;
            font-size: 0.85rem;
            cursor: pointer;
            border: 1px solid var(--color-border);
            background: transparent;
            color: var(--color-text-muted);
            transition: all var(--transition);
        }
        .filter-tags .tag:hover {
            border-color: var(--color-primary-light);
            color: #fff;
            background: rgba(37, 99, 235, 0.1);
        }
        .filter-tags .tag.active {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        /* ===== 卡片网格 ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .game-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .game-card:hover {
            transform: translateY(-6px);
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-lg), var(--shadow-glow);
        }
        .game-card .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #1a2332;
        }
        .game-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .game-card:hover .card-img img {
            transform: scale(1.05);
        }
        .game-card .card-img .card-badges {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .game-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .game-card .card-body .card-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }
        .game-card .card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: #fff;
        }
        .game-card .card-body p {
            font-size: 0.9rem;
            color: var(--color-text-dim);
            margin-bottom: 14px;
            flex: 1;
        }
        .game-card .card-body .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
        }
        .game-card .card-body .card-meta .rating {
            display: flex;
            align-items: center;
            gap: 4px;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .game-card .card-body .card-meta .rating i {
            font-size: 0.8rem;
        }
        .game-card .card-body .card-meta .downloads {
            color: var(--color-text-dim);
            font-size: 0.8rem;
        }
        @media (max-width: 992px) {
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .game-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .game-card .card-body {
                padding: 16px 18px 20px;
            }
        }

        /* ===== 排行榜 ===== */
        .rank-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--color-bg-card);
            padding: 16px 22px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }
        .rank-item:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .rank-item .rank-num {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-weight: 800;
            font-size: 1.1rem;
            background: var(--color-border);
            color: var(--color-text-muted);
            flex-shrink: 0;
        }
        .rank-item:nth-child(1) .rank-num {
            background: var(--color-accent);
            color: #0f172a;
        }
        .rank-item:nth-child(2) .rank-num {
            background: var(--color-primary);
            color: #fff;
        }
        .rank-item:nth-child(3) .rank-num {
            background: var(--color-primary-dark);
            color: #fff;
        }
        .rank-item .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-item .rank-info h4 {
            font-size: 1rem;
            color: #fff;
            margin-bottom: 2px;
        }
        .rank-item .rank-info .rank-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .rank-item .rank-info .rank-tags .tag {
            font-size: 0.65rem;
            padding: 2px 10px;
        }
        .rank-item .rank-score {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-accent);
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .rank-item .rank-score i {
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .rank-item {
                padding: 12px 16px;
                gap: 12px;
            }
            .rank-item .rank-num {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }
            .rank-item .rank-score {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .rank-item {
                flex-wrap: wrap;
            }
            .rank-item .rank-info {
                min-width: calc(100% - 100px);
            }
        }

        /* ===== 特色区块 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            text-align: center;
            padding: 36px 20px 30px;
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-primary-light);
            box-shadow: var(--shadow-md), var(--shadow-glow);
        }
        .feature-card .feat-icon {
            font-size: 2.4rem;
            color: var(--color-accent);
            margin-bottom: 16px;
            display: block;
        }
        .feature-card h4 {
            color: #fff;
            margin-bottom: 10px;
            font-size: 1.1rem;
        }
        .feature-card p {
            font-size: 0.88rem;
            color: var(--color-text-dim);
            margin-bottom: 0;
        }
        @media (max-width: 992px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .feature-card {
                padding: 26px 16px 22px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
            padding: 80px 0;
        }
        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 30px;
            color: var(--color-text-muted);
        }
        .cta-section .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section {
                padding: 50px 0;
            }
        }
        @media (max-width: 520px) {
            .cta-section .cta-actions {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--color-border-light);
        }
        .faq-item .faq-q {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: #fff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            background: transparent;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-item .faq-q:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-item .faq-q i {
            color: var(--color-primary-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
            color: var(--color-text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 22px 20px;
        }
        .faq-item .faq-a p {
            margin-bottom: 0;
        }
        @media (max-width: 520px) {
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-item .faq-a {
                padding: 0 16px;
                font-size: 0.85rem;
            }
            .faq-item.open .faq-a {
                padding: 0 16px 16px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0b1120;
            border-top: 1px solid var(--color-border);
            padding: 60px 0 0;
            color: var(--color-text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand .logo span {
            -webkit-text-fill-color: #fff;
            color: #fff;
            background: none;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--color-text-dim);
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: var(--color-text-dim);
            font-size: 0.9rem;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--color-primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            border-top: 1px solid var(--color-border);
            font-size: 0.8rem;
            color: var(--color-text-dim);
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            color: var(--color-text-dim);
            font-size: 1.2rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            color: var(--color-accent);
            transform: translateY(-2px);
        }
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }

        /* ===== 辅助类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 16px;
        }
        .mt-2 {
            margin-top: 32px;
        }
        .mb-1 {
            margin-bottom: 16px;
        }
        .mb-2 {
            margin-bottom: 32px;
        }
        .gap-1 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

        /* ===== 焦点可访问性 ===== */
        a:focus-visible,
        button:focus-visible,
        .tag:focus-visible {
            outline: 3px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--color-border);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--color-border-light);
        }

        /* ===== 分隔线装饰 ===== */
        .divider {
            width: 60px;
            height: 3px;
            background: var(--color-primary);
            border-radius: 4px;
            margin: 0 auto 16px;
        }
        .divider-accent {
            background: var(--color-accent);
        }

/* roulang page: article */
/* ===== Design Variables ===== */
    :root {
        --color-primary: #1a1a2e;
        --color-primary-light: #16213e;
        --color-accent: #e94560;
        --color-accent-hover: #d63850;
        --color-gold: #f5a623;
        --color-gold-light: #f7c35c;
        --color-bg: #f8f9fc;
        --color-bg-alt: #ffffff;
        --color-bg-dark: #0f0f1a;
        --color-text: #1e1e2f;
        --color-text-light: #5a5a7a;
        --color-text-inverse: #ffffff;
        --color-border: #e2e6ef;
        --color-border-light: #f0f2f7;
        --color-success: #2ecc71;
        --color-warning: #f39c12;
        --color-error: #e74c3c;
        --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        --font-size-xs: 0.75rem;
        --font-size-sm: 0.875rem;
        --font-size-base: 1rem;
        --font-size-lg: 1.125rem;
        --font-size-xl: 1.375rem;
        --font-size-2xl: 1.75rem;
        --font-size-3xl: 2.25rem;
        --font-size-4xl: 3rem;
        --radius-sm: 6px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
        --shadow-md: 0 8px 24px rgba(0,0,0,0.06);
        --shadow-lg: 0 16px 48px rgba(0,0,0,0.08);
        --shadow-xl: 0 24px 64px rgba(0,0,0,0.12);
        --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        --spacing-xs: 0.5rem;
        --spacing-sm: 1rem;
        --spacing-md: 2rem;
        --spacing-lg: 3.5rem;
        --spacing-xl: 5rem;
        --max-width: 1200px;
        --header-height: 72px;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
    body {
        font-family: var(--font-family);
        font-size: var(--font-size-base);
        line-height: 1.7;
        color: var(--color-text);
        background: var(--color-bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--color-accent-hover); }
    a:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; border-radius: 4px; }
    img { max-width: 100%; height: auto; display: block; }
    button, input, textarea, select { font: inherit; color: inherit; }
    button { cursor: pointer; border: none; background: none; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--color-text); }
    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }
    h4 { font-size: var(--font-size-lg); }
    p { margin-bottom: var(--spacing-sm); }
    p:last-child { margin-bottom: 0; }
    .container {
        width: 100%;
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 var(--spacing-sm);
    }

    /* ===== Header & Navigation ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: var(--header-height);
        background: rgba(26, 26, 46, 0.92);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(255,255,255,0.06);
        z-index: 1000;
        transition: background var(--transition), box-shadow var(--transition);
    }
    .site-header.scrolled {
        background: rgba(26, 26, 46, 0.98);
        box-shadow: 0 4px 30px rgba(0,0,0,0.3);
    }
    .site-header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: var(--font-size-xl);
        font-weight: 800;
        color: var(--color-text-inverse);
        letter-spacing: -0.5px;
        transition: opacity var(--transition);
    }
    .logo i { color: var(--color-accent); font-size: 1.5rem; }
    .logo:hover { opacity: 0.85; color: var(--color-text-inverse); }
    .logo span { background: linear-gradient(135deg, #f5a623, #e94560); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .main-nav {
        display: flex;
        align-items: center;
        gap: 0.25rem;
    }
    .main-nav a {
        position: relative;
        display: flex;
        align-items: center;
        gap: 0.4rem;
        padding: 0.5rem 1.1rem;
        font-size: var(--font-size-sm);
        font-weight: 500;
        color: rgba(255,255,255,0.75);
        border-radius: var(--radius-sm);
        transition: all var(--transition);
        letter-spacing: 0.2px;
    }
    .main-nav a i { font-size: 0.9rem; }
    .main-nav a:hover { color: #fff; background: rgba(255,255,255,0.08); }
    .main-nav a.active { color: #fff; background: rgba(233, 69, 96, 0.2); }
    .main-nav a.active::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 50%;
        transform: translateX(-50%);
        width: 24px;
        height: 3px;
        background: var(--color-accent);
        border-radius: 4px;
    }
    .main-nav a.nav-cta {
        background: linear-gradient(135deg, var(--color-accent), #d63850);
        color: #fff;
        padding: 0.5rem 1.4rem;
        border-radius: var(--radius-md);
        font-weight: 600;
        box-shadow: 0 4px 16px rgba(233, 69, 96, 0.3);
        margin-left: 0.5rem;
    }
    .main-nav a.nav-cta:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 28px rgba(233, 69, 96, 0.4);
        background: linear-gradient(135deg, #d63850, #c02a42);
    }
    .nav-toggle {
        display: none;
        flex-direction: column;
        gap: 5px;
        padding: 6px 4px;
        background: transparent;
        border: none;
        cursor: pointer;
    }
    .nav-toggle span {
        display: block;
        width: 26px;
        height: 2.5px;
        background: #fff;
        border-radius: 4px;
        transition: all 0.3s ease;
    }
    .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .nav-toggle.active span:nth-child(2) { opacity: 0; }
    .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

    /* ===== Article Hero ===== */
    .article-hero {
        position: relative;
        padding: calc(var(--header-height) + var(--spacing-xl)) 0 var(--spacing-lg);
        background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #16213e 100%);
        overflow: hidden;
        min-height: 320px;
        display: flex;
        align-items: center;
    }
    .article-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        opacity: 0.15;
        mix-blend-mode: overlay;
        pointer-events: none;
    }
    .article-hero::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 120px;
        background: linear-gradient(to top, var(--color-bg), transparent);
        pointer-events: none;
    }
    .article-hero .container {
        position: relative;
        z-index: 2;
        text-align: center;
    }
    .article-hero .post-meta {
        display: flex;
        justify-content: center;
        align-items: center;
        flex-wrap: wrap;
        gap: 0.75rem 1.5rem;
        margin-bottom: var(--spacing-sm);
        font-size: var(--font-size-sm);
        color: rgba(255,255,255,0.7);
    }
    .article-hero .post-meta a {
        color: var(--color-gold-light);
        font-weight: 500;
    }
    .article-hero .post-meta a:hover { color: var(--color-gold); }
    .article-hero .post-meta i { margin-right: 0.3rem; }
    .article-hero .post-category {
        display: inline-block;
        padding: 0.25rem 1rem;
        border-radius: 30px;
        background: rgba(233, 69, 96, 0.2);
        color: var(--color-accent);
        font-size: var(--font-size-xs);
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 1px;
        border: 1px solid rgba(233, 69, 96, 0.25);
    }
    .article-hero h1 {
        font-size: var(--font-size-4xl);
        font-weight: 800;
        color: #fff;
        max-width: 880px;
        margin: 0 auto var(--spacing-sm);
        line-height: 1.25;
        letter-spacing: -0.5px;
        text-shadow: 0 4px 30px rgba(0,0,0,0.3);
    }
    .article-hero .post-date {
        color: rgba(255,255,255,0.55);
        font-size: var(--font-size-sm);
    }

    /* ===== Article Main ===== */
    .article-main {
        padding: var(--spacing-lg) 0 var(--spacing-xl);
        background: var(--color-bg);
    }
    .article-layout {
        display: grid;
        grid-template-columns: 1fr 300px;
        gap: var(--spacing-lg);
        align-items: start;
    }
    .article-content {
        background: var(--color-bg-alt);
        border-radius: var(--radius-lg);
        padding: var(--spacing-md) var(--spacing-md);
        box-shadow: var(--shadow-md);
        border: 1px solid var(--color-border-light);
    }
    .article-content .post-body {
        font-size: var(--font-size-base);
        line-height: 1.9;
        color: var(--color-text);
    }
    .article-content .post-body p { margin-bottom: 1.2rem; }
    .article-content .post-body h2, 
    .article-content .post-body h3 { margin-top: 2rem; margin-bottom: 1rem; }
    .article-content .post-body img { border-radius: var(--radius-md); margin: 1.5rem 0; box-shadow: var(--shadow-sm); }
    .article-content .post-body ul, 
    .article-content .post-body ol { margin-bottom: 1.2rem; padding-left: 1.5rem; }
    .article-content .post-body li { margin-bottom: 0.4rem; }
    .article-content .post-body blockquote {
        border-left: 4px solid var(--color-accent);
        padding: 1rem 1.5rem;
        margin: 1.5rem 0;
        background: rgba(233, 69, 96, 0.04);
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        font-style: italic;
        color: var(--color-text-light);
    }
    .article-content .post-body a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 2px; }
    .article-content .post-body a:hover { text-decoration: none; }
    .article-content .post-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
        margin-top: var(--spacing-md);
        padding-top: var(--spacing-md);
        border-top: 1px solid var(--color-border);
    }
    .article-content .post-tags .tag {
        display: inline-block;
        padding: 0.3rem 1rem;
        background: var(--color-bg);
        border-radius: 30px;
        font-size: var(--font-size-xs);
        font-weight: 500;
        color: var(--color-text-light);
        border: 1px solid var(--color-border);
        transition: all var(--transition);
    }
    .article-content .post-tags .tag:hover {
        background: var(--color-accent);
        color: #fff;
        border-color: var(--color-accent);
    }
    .article-content .post-share {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        margin-top: var(--spacing-sm);
        font-size: var(--font-size-sm);
        color: var(--color-text-light);
    }
    .article-content .post-share a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: var(--color-bg);
        color: var(--color-text-light);
        border: 1px solid var(--color-border);
        transition: all var(--transition);
    }
    .article-content .post-share a:hover {
        background: var(--color-accent);
        color: #fff;
        border-color: var(--color-accent);
        transform: translateY(-2px);
    }
    .article-notfound {
        text-align: center;
        padding: var(--spacing-xl) 0;
    }
    .article-notfound i { font-size: 4rem; color: var(--color-text-light); margin-bottom: var(--spacing-sm); }
    .article-notfound h2 { font-size: var(--font-size-3xl); color: var(--color-text); }
    .article-notfound p { color: var(--color-text-light); margin-bottom: var(--spacing-md); }
    .article-notfound a { font-weight: 600; }

    /* ===== Sidebar ===== */
    .article-sidebar {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
    }
    .sidebar-card {
        background: var(--color-bg-alt);
        border-radius: var(--radius-md);
        padding: var(--spacing-sm) var(--spacing-sm);
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--color-border-light);
    }
    .sidebar-card h3 {
        font-size: var(--font-size-base);
        font-weight: 700;
        margin-bottom: var(--spacing-sm);
        padding-bottom: 0.5rem;
        border-bottom: 2px solid var(--color-accent);
        display: inline-block;
    }
    .sidebar-card ul li { margin-bottom: 0.6rem; }
    .sidebar-card ul li a {
        font-size: var(--font-size-sm);
        color: var(--color-text);
        display: flex;
        align-items: center;
        gap: 0.5rem;
        transition: all var(--transition);
    }
    .sidebar-card ul li a:hover { color: var(--color-accent); transform: translateX(4px); }
    .sidebar-card ul li a i { color: var(--color-accent); font-size: 0.7rem; }
    .sidebar-card .sidebar-cta {
        display: block;
        margin-top: var(--spacing-sm);
        padding: 0.6rem 1rem;
        background: linear-gradient(135deg, var(--color-accent), #d63850);
        color: #fff;
        border-radius: var(--radius-sm);
        font-weight: 600;
        text-align: center;
        transition: all var(--transition);
    }
    .sidebar-card .sidebar-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(233,69,96,0.3); color: #fff; }

    /* ===== Related Posts ===== */
    .related-section {
        padding: var(--spacing-lg) 0;
        background: var(--color-bg-alt);
        border-top: 1px solid var(--color-border-light);
    }
    .related-section h2 {
        text-align: center;
        margin-bottom: var(--spacing-md);
        font-size: var(--font-size-2xl);
        font-weight: 800;
    }
    .related-section h2 span { color: var(--color-accent); }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }
    .related-card {
        background: var(--color-bg);
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid var(--color-border-light);
        transition: all var(--transition);
        box-shadow: var(--shadow-sm);
    }
    .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
    .related-card .card-img {
        width: 100%;
        height: 180px;
        object-fit: cover;
        border-bottom: 1px solid var(--color-border-light);
    }
    .related-card .card-body { padding: var(--spacing-sm); }
    .related-card .card-body h4 { font-size: var(--font-size-base); font-weight: 700; margin-bottom: 0.3rem; }
    .related-card .card-body h4 a { color: var(--color-text); }
    .related-card .card-body h4 a:hover { color: var(--color-accent); }
    .related-card .card-body p { font-size: var(--font-size-sm); color: var(--color-text-light); }
    .related-card .card-meta {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        font-size: var(--font-size-xs);
        color: var(--color-text-light);
        margin-top: 0.5rem;
    }

    /* ===== CTA Section ===== */
    .cta-section {
        padding: var(--spacing-xl) 0;
        background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 100%);
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
        opacity: 0.1;
        pointer-events: none;
    }
    .cta-section .container { position: relative; z-index: 2; text-align: center; }
    .cta-section h2 { font-size: var(--font-size-3xl); color: #fff; margin-bottom: 0.75rem; font-weight: 800; }
    .cta-section p { color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto var(--spacing-md); }
    .cta-section .cta-buttons { display: flex; justify-content: center; gap: var(--spacing-sm); flex-wrap: wrap; }
    .cta-section .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.85rem 2rem;
        background: linear-gradient(135deg, var(--color-accent), #d63850);
        color: #fff;
        border-radius: var(--radius-md);
        font-weight: 700;
        font-size: var(--font-size-base);
        box-shadow: 0 8px 28px rgba(233, 69, 96, 0.3);
        transition: all var(--transition);
    }
    .cta-section .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(233, 69, 96, 0.45); color: #fff; }
    .cta-section .btn-secondary {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.85rem 2rem;
        background: rgba(255,255,255,0.08);
        color: #fff;
        border-radius: var(--radius-md);
        font-weight: 600;
        font-size: var(--font-size-base);
        border: 1px solid rgba(255,255,255,0.2);
        transition: all var(--transition);
    }
    .cta-section .btn-secondary:hover { background: rgba(255,255,255,0.15); border-color: var(--color-accent); color: #fff; }

    /* ===== FAQ Section ===== */
    .faq-section {
        padding: var(--spacing-lg) 0;
        background: var(--color-bg);
    }
    .faq-section h2 {
        text-align: center;
        margin-bottom: var(--spacing-md);
        font-size: var(--font-size-2xl);
        font-weight: 800;
    }
    .faq-section h2 span { color: var(--color-accent); }
    .faq-grid {
        max-width: 800px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    .faq-item {
        background: var(--color-bg-alt);
        border-radius: var(--radius-md);
        padding: var(--spacing-sm) var(--spacing-sm);
        border: 1px solid var(--color-border-light);
        box-shadow: var(--shadow-sm);
        transition: all var(--transition);
    }
    .faq-item:hover { box-shadow: var(--shadow-md); }
    .faq-item .faq-question {
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-weight: 700;
        font-size: var(--font-size-base);
        color: var(--color-text);
        cursor: pointer;
        user-select: none;
    }
    .faq-item .faq-question i { color: var(--color-accent); transition: transform var(--transition); }
    .faq-item.active .faq-question i { transform: rotate(180deg); }
    .faq-item .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.3s ease;
        color: var(--color-text-light);
        font-size: var(--font-size-sm);
        line-height: 1.8;
    }
    .faq-item.active .faq-answer {
        max-height: 300px;
        padding-top: var(--spacing-sm);
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--color-bg-dark);
        color: rgba(255,255,255,0.7);
        padding: var(--spacing-lg) 0 var(--spacing-sm);
        border-top: 1px solid rgba(255,255,255,0.05);
    }
    .site-footer .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    .site-footer .footer-brand .logo { margin-bottom: var(--spacing-sm); }
    .site-footer .footer-brand .logo span { color: #fff; -webkit-text-fill-color: #fff; background: none; }
    .site-footer .footer-brand p { font-size: var(--font-size-sm); line-height: 1.8; color: rgba(255,255,255,0.55); max-width: 320px; }
    .site-footer .footer-col h4 {
        font-size: var(--font-size-sm);
        font-weight: 700;
        color: #fff;
        margin-bottom: var(--spacing-sm);
        letter-spacing: 0.5px;
    }
    .site-footer .footer-col ul li { margin-bottom: 0.5rem; }
    .site-footer .footer-col ul li a {
        font-size: var(--font-size-sm);
        color: rgba(255,255,255,0.55);
        transition: all var(--transition);
        display: flex;
        align-items: center;
        gap: 0.4rem;
    }
    .site-footer .footer-col ul li a:hover { color: var(--color-accent); transform: translateX(4px); }
    .site-footer .footer-col ul li a i { font-size: 0.8rem; }
    .site-footer .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.06);
        padding-top: var(--spacing-sm);
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        font-size: var(--font-size-xs);
        color: rgba(255,255,255,0.4);
    }
    .site-footer .footer-social { display: flex; gap: 0.6rem; }
    .site-footer .footer-social a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        border-radius: 50%;
        background: rgba(255,255,255,0.06);
        color: rgba(255,255,255,0.5);
        transition: all var(--transition);
    }
    .site-footer .footer-social a:hover { background: var(--color-accent); color: #fff; transform: translateY(-2px); }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .article-layout { grid-template-columns: 1fr; }
        .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-sm); }
        .related-grid { grid-template-columns: repeat(2, 1fr); }
        .site-footer .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
        .main-nav {
            position: fixed;
            top: var(--header-height);
            left: 0;
            width: 100%;
            flex-direction: column;
            background: rgba(15, 15, 26, 0.98);
            backdrop-filter: blur(20px);
            padding: var(--spacing-sm);
            gap: 0.25rem;
            transform: translateY(-120%);
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s ease;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            box-shadow: 0 20px 60px rgba(0,0,0,0.5);
            max-height: 80vh;
            overflow-y: auto;
        }
        .main-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
        .main-nav a { width: 100%; padding: 0.75rem 1rem; justify-content: center; font-size: var(--font-size-base); }
        .main-nav a.nav-cta { margin-left: 0; margin-top: 0.5rem; justify-content: center; }
        .main-nav a.active::after { display: none; }
        .nav-toggle { display: flex; }
        .article-hero h1 { font-size: var(--font-size-2xl); }
        .article-hero { min-height: 240px; padding: calc(var(--header-height) + var(--spacing-md)) 0 var(--spacing-md); }
        .article-content { padding: var(--spacing-sm); }
        .article-sidebar { grid-template-columns: 1fr; }
        .related-grid { grid-template-columns: 1fr; }
        .cta-section h2 { font-size: var(--font-size-2xl); }
        .site-footer .footer-grid { grid-template-columns: 1fr; }
        .site-footer .footer-bottom { flex-direction: column; text-align: center; }
        :root { --spacing-xl: 3rem; --spacing-lg: 2rem; --spacing-md: 1.25rem; }
    }
    @media (max-width: 520px) {
        .article-hero h1 { font-size: var(--font-size-xl); }
        .article-hero .post-meta { flex-direction: column; gap: 0.4rem; }
        .cta-section .cta-buttons { flex-direction: column; align-items: center; }
        .cta-section .btn-primary, .cta-section .btn-secondary { width: 100%; justify-content: center; }
        .logo span { font-size: var(--font-size-base); }
        .logo i { font-size: 1.2rem; }
    }
    @media (max-width: 380px) {
        .article-hero h1 { font-size: var(--font-size-lg); }
        .article-content { padding: 0.75rem; }
    }