:root {
        --primary: #eab308;
        --accent: #f59e0b;
        --bg: #18181b;
        --text: #fafafa;
        --card-bg: #1f1f23;
        --border-light: #2a2a2e;
        --shadow-heavy: 8px 8px 0px rgba(0,0,0,0.6);
        --shadow-lift: 0 15px 30px -10px rgba(0,0,0,0.7);
    }
    * { margin:0; padding:0; box-sizing:border-box; }
    html { scroll-behavior:smooth; }
    body {
        background-color: var(--bg);
        color: var(--text);
        font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        font-size: 15px;
        line-height: 1.5;
        font-weight: 400;
        overflow-x: hidden;
    }
    h1,h2,h3,h4,h5 { font-weight: 800; letter-spacing: -0.02em; }
    a { color: inherit; text-decoration: none; }

    /* -------- Hero 主视觉：大图压暗叠白字 -------- */
    .hero-wrapper {
        min-height: 70vh;
        display: flex;
        align-items: center;
        position: relative;
        background-image: url('{随机图片}'); /* 主视觉大图，后续程序替换 */
        background-size: cover;
        background-position: center 30%;
        padding: 120px 0 80px;
    }
    .hero-wrapper::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(115deg, rgba(24,24,27,0.92) 20%, rgba(24,24,27,0.55) 60%, rgba(24,24,27,0.8));
        z-index: 1;
    }
    .hero-wrapper .container { position: relative; z-index: 3; }
    .hero-badge {
        display:inline-block;
        background: var(--primary);
        color:#0a0a0a;
        font-weight:800;
        font-size:0.85rem;
        padding: 6px 18px;
        border-radius: 40px;
        letter-spacing: 0.05em;
        text-transform: uppercase;
        box-shadow: var(--shadow-heavy);
        margin-bottom: 24px;
        border: 1px solid rgba(255,255,255,0.3);
    }
    .hero-title {
        font-size: clamp(2.4rem, 7vw, 4.8rem);
        font-weight: 900;
        color: #fff;
        text-shadow: 0 4px 0 rgba(0,0,0,0.3);
        margin-bottom: 20px;
        line-height: 1.1;
        max-width: 850px;
    }
    .hero-title span { color: var(--primary); }
    .hero-sub {
        font-size: 1.2rem;
        color: rgba(255,255,255,0.8);
        max-width: 700px;
        font-weight: 400;
        margin-bottom: 36px;
        border-left: 4px solid var(--primary);
        padding-left: 22px;
        background: rgba(0,0,0,0.2);
        padding: 16px 20px;
        border-radius: 0 10px 10px 0;
        backdrop-filter: blur(2px);
    }
    .hero-cta {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
    }
    .btn-gold {
        background: linear-gradient(135deg, var(--primary), var(--accent));
        color: #0f0f0f;
        border: none;
        font-weight: 800;
        padding: 14px 34px;
        border-radius: 6px;
        box-shadow: 5px 5px 0 rgba(0,0,0,0.5);
        position: relative;
        overflow: hidden;
        transition: all .25s ease;
        font-size: 1rem;
        letter-spacing: 0.02em;
    }
    .btn-gold::after {
        content: '';
        position: absolute;
        top: -50%;
        left: -60%;
        width: 30%;
        height: 200%;
        background: rgba(255,255,255,0.35);
        transform: skewX(-20deg);
        transition: all .5s;
    }
    .btn-gold:hover::after { left: 130%; }
    .btn-outline {
        background: transparent;
        border: 2px solid var(--primary);
        color: var(--primary);
        font-weight: 600;
        padding: 12px 30px;
        border-radius: 6px;
        transition: all .2s;
        text-align: center;
    }
    .btn-outline:hover { background: rgba(234,179,8,0.1); }

    /* -------- 吸顶导航 -------- */
    .sticky-top-custom {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(24,24,27,0.92);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--border-light);
    }
    .navbar-brand {
        font-weight: 900;
        font-size: 1.5rem;
        color: var(--primary) !important;
        letter-spacing: -0.5px;
        white-space: nowrap;
    }
    .nav-link {
        font-weight: 600;
        color: var(--text) !important;
        margin: 0 10px;
        padding: 8px 4px;
        position: relative;
        font-size: 0.95rem;
        transition: color .2s;
    }
    .nav-link:hover, .nav-link.active { color: var(--primary) !important; }
    .nav-link::after {
        content:'';
        position:absolute;
        bottom:0;
        left:0;
        width:0;
        height:2px;
        background: var(--primary);
        transition: width .25s;
    }
    .nav-link:hover::after { width:100%; }
    .navbar-toggler { border-color: rgba(255,255,255,0.2); }
    .navbar-toggler-icon { filter: invert(1); }

    /* -------- 页面公用区块 -------- */
    section { padding: 60px 0; position: relative; }
    .section-label {
        display: inline-block;
        color: var(--primary);
        font-weight: 800;
        font-size: 0.8rem;
        text-transform: uppercase;
        letter-spacing: 2px;
        margin-bottom: 8px;
        border-left: 3px solid var(--primary);
        padding-left: 12px;
    }
    .section-title {
        font-size: 2.1rem;
        font-weight: 900;
        margin-bottom: 12px;
        color: #fff;
    }
    .section-desc { color: #a1a1aa; max-width: 700px; margin-bottom: 30px; }

    /* 数据统计 */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4,1fr);
        gap: 20px;
    }
    .stat-box {
        background: var(--card-bg);
        border: 1px solid var(--border-light);
        border-radius: 8px;
        padding: 24px 16px;
        box-shadow: 6px 6px 0 rgba(0,0,0,0.3);
        transition: transform .2s;
        text-align:center;
    }
    .stat-box:hover { transform: translateY(-4px); box-shadow: 10px 10px 0 rgba(0,0,0,0.4); }
    .stat-num {
        font-size: 2.5rem;
        font-weight: 900;
        color: var(--primary);
        line-height:1.2;
    }
    .stat-label { color:#d4d4d8; font-size:0.9rem; font-weight:500; }

    /* 时间线 */
    .timeline {
        position: relative;
        padding-left: 30px;
    }
    .timeline::before {
        content: '';
        position: absolute;
        left: 10px;
        top: 0;
        bottom: 0;
        width: 3px;
        background: linear-gradient(to bottom, var(--primary), var(--accent));
        border-radius: 5px;
    }
    .timeline-item {
        position: relative;
        margin-bottom: 28px;
        background: var(--card-bg);
        padding: 20px 20px 20px 30px;
        border-radius: 10px;
        border-left: 3px solid var(--primary);
        box-shadow: 5px 5px 0 rgba(0,0,0,0.3);
    }
    .timeline-item::before {
        content: '';
        position: absolute;
        left: -23px;
        top: 24px;
        width: 14px;
        height: 14px;
        background: var(--primary);
        border-radius: 50%;
        border: 3px solid var(--bg);
    }
    .timeline-time { color: var(--accent); font-weight:700; font-size:0.85rem; letter-spacing:0.03em; }
    .timeline-title { font-weight:800; color:#fff; font-size:1.1rem; margin: 4px 0 6px; }
    .timeline-text { color:#a1a1aa; font-size:0.95rem; }

    /* 特色 - 标签页切换 */
    .feature-tabs {
        display: flex;
        gap: 8px;
        flex-wrap: wrap;
        border-bottom: 1px solid var(--border-light);
        padding-bottom: 12px;
        margin-bottom: 24px;
    }
    .feature-tab {
        background: transparent;
        border: 1px solid var(--border-light);
        color: #c0c0c0;
        font-weight: 600;
        padding: 8px 20px;
        border-radius: 30px;
        transition: all .25s;
        cursor: pointer;
        font-size:0.9rem;
    }
    .feature-tab.active, .feature-tab:hover {
        background: var(--primary);
        border-color: var(--primary);
        color: #0a0a0a;
        font-weight:700;
        box-shadow: 3px 3px 0 rgba(0,0,0,0.4);
    }
    .feature-content { display: none; }
    .feature-content.active { display: block; }
    .feature-card {
        background: var(--card-bg);
        padding: 22px;
        border-radius: 10px;
        border: 1px solid var(--border-light);
        box-shadow: 5px 5px 0 rgba(0,0,0,0.3);
        margin-bottom: 12px;
        display: flex;
        gap: 16px;
        align-items: flex-start;
    }
    .feature-icon {
        width: 48px;
        height: 48px;
        min-width: 48px;
        border-radius: 8px;
        background: linear-gradient(145deg, var(--primary), var(--accent));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.4rem;
        color:#0a0a0a;
    }
    .feature-card h5 { font-weight: 800; color:#fff; }
    .feature-card p { color:#b0b0b8; font-size:0.93rem; margin: 4px 0 0; }

    /* FAQ */
    .faq-item {
        background: var(--card-bg);
        border: 1px solid var(--border-light);
        border-radius: 8px;
        margin-bottom: 12px;
        overflow: hidden;
        box-shadow: 4px 4px 0 rgba(0,0,0,0.2);
    }
    .faq-q {
        background: none;
        border: none;
        padding: 18px 20px;
        font-weight: 700;
        color: var(--text);
        width: 100%;
        text-align: left;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 1.05rem;
    }
    .faq-q i { color: var(--primary); }
    .faq-a {
        padding: 0 20px 18px;
        color: #b0b0b8;
        font-size:0.95rem;
    }
    /* 纯 CSS 折叠 */
    .faq-item details summary::-webkit-details-marker { display:none; }
    .faq-item details[open] summary i.fa-plus { transform: rotate(45deg); }
    .faq-item summary i { transition: transform .2s; }

    /* CTA */
    .cta-section {
        background: linear-gradient(130deg, rgba(234,179,8,0.15), rgba(245,158,11,0.1)), var(--bg);
        border-top: 1px solid var(--border-light);
        padding: 50px 0;
        text-align:center;
    }

    /* 友情链接 */
    .footer-friend {
        background: #151518;
        border-top: 1px solid var(--border-light);
        padding: 20px 0;
        font-size:0.85rem;
        text-align:center;
        color:#aaa;
    }
    .footer-friend a { color:#aaa; margin: 0 8px; }
    .footer-friend a:hover { color: var(--primary); }
    .main-footer {
        background: #111113;
        border-top: 1px solid var(--border-light);
        padding: 30px 0 20px;
        font-size: 0.9rem;
    }
    .main-footer .footer-brand { font-weight: 900; color: var(--primary); font-size: 1.3rem; }
    .footer-links a { color: #aaa; margin-right: 18px; font-size: 0.85rem; }
    .footer-links a:hover { color: var(--primary); }
    .copyright { color:#aaa; margin-top: 12px; }

    /* 滚动显现 */
    .reveal {
        opacity: 0;
        transform: translateY(25px);
        transition: opacity .6s ease, transform .6s ease;
    }
    .reveal.visible { opacity: 1; transform: translateY(0); }

    /* 回到顶部 */
    .back-top {
        position: fixed;
        bottom: 30px;
        right: 30px;
        background: var(--primary);
        color: #0a0a0a;
        width: 48px;
        height: 48px;
        border-radius: 8px;
        font-size: 1.3rem;
        display: flex;
        align-items: center;
        justify-content: center;
        opacity: 0;
        visibility: hidden;
        transition: all .3s;
        box-shadow: 4px 4px 0 rgba(0,0,0,0.5);
        z-index: 1000;
        cursor: pointer;
        border: none;
    }
    .back-top.show { opacity: 1; visibility: visible; }
    .back-top:hover { background: var(--accent); }

    /* 双色块左右分屏 */
    .split-section {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0;
        align-items: stretch;
    }
    .split-left {
        background: #1a1a1d;
        padding: 45px;
        border-right: 1px solid var(--border-light);
    }
    .split-right {
        background: #141417;
        padding: 45px;
    }
    @media (max-width: 768px) {
        .split-section { grid-template-columns: 1fr; }
        .split-left { border-right: none; border-bottom: 1px solid var(--border-light); }
        .stats-grid { grid-template-columns: repeat(2,1fr); }
        .hero-wrapper { min-height: 50vh; padding: 100px 0 50px; }
        .back-top { width: 40px; height: 40px; bottom: 20px; right: 20px; }
    }

/* --- 子页面追加 --- */
.page-hero {
            padding: 120px 0 60px;
            background: linear-gradient(180deg, rgba(234,179,8,0.08) 0%, transparent 100%);
        }
.content-card {
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: 16px;
            padding: 32px;
            margin-bottom: 28px;
            box-shadow: var(--shadow-heavy);
        }
.content-card h2 {
            color: var(--primary);
            font-weight: 800;
            font-size: 1.5rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
.content-card p {
            color: var(--text);
            opacity: 0.9;
            line-height: 1.8;
            font-size: 0.98rem;
        }
.content-card ul {
            color: var(--text);
            opacity: 0.9;
            padding-left: 20px;
        }
.content-card li {
            margin-bottom: 10px;
            line-height: 1.7;
        }
.badge-chip {
            background: rgba(234,179,8,0.15);
            color: var(--primary);
            border: 1px solid rgba(234,179,8,0.3);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            display: inline-block;
            margin: 4px 6px 4px 0;
        }
.highlight-text {
            color: var(--primary);
            font-weight: 700;
        }
blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(234,179,8,0.06);
            padding: 14px 20px;
            border-radius: 0 10px 10px 0;
            margin: 20px 0;
            color: var(--text);
            opacity: 0.9;
            font-style: italic;
        }
.nav-link.active-about {
            color: var(--primary) !important;
            font-weight: 700;
        }
.page-hero { padding: 100px 0 40px; }
.content-card { padding: 22px; }

/* --- 子页面追加 --- */
/* 确保 Bootstrap 组件融入暗色风格 */
        .card, .card-body, .card-title, .card-text, .card-header, .card-footer,
        .list-group-item, .accordion-item, .accordion-button, .accordion-body {
            background: var(--card-bg);
            color: var(--text);
            border-color: var(--border-light);
        }
.accordion-button:not(.collapsed) {
            background: var(--card-bg);
            color: var(--primary);
            box-shadow: none;
        }
.accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary);
        }
.accordion-button::after {
            filter: invert(1);
        }
/* 覆盖导航激活态 */
        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
/* 自定义列表样式 */
        .disclaimer-list {
            list-style: none;
            padding-left: 0;
        }
.disclaimer-list li {
            padding: 0.6rem 0 0.6rem 1.8rem;
            position: relative;
            border-bottom: 1px dashed var(--border-light);
            color: rgba(250, 250, 250, 0.9);
        }
.disclaimer-list li:last-child {
            border-bottom: none;
        }
.disclaimer-list li::before {
            content: "\f061";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--primary);
            position: absolute;
            left: 0;
            top: 0.6rem;
            font-size: 0.9rem;
        }
.small-meta {
            color: rgba(250, 250, 250, 0.55);
            font-size: 0.85rem;
        }
.text-accent {
            color: var(--primary);
        }
.border-gold {
            border-left: 4px solid var(--primary);
            padding-left: 1rem;
        }
a.dim-link {
            color: var(--accent);
            text-decoration: underline dotted;
        }
a.dim-link:hover {
            color: var(--primary);
        }

/* --- 子页面追加 --- */
/* 页面专属补充样式 */
        .privacy-section { padding: 4rem 0; }
.privacy-card { background: var(--card-bg); border: 1px solid var(--border-light); border-radius: 12px; padding: 2rem; margin-bottom: 1.5rem; transition: transform .2s; }
.privacy-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); }
.privacy-card h2 { color: var(--primary); font-size: 1.5rem; font-weight: 700; margin-bottom: 1rem; padding-bottom: .5rem; border-bottom: 2px solid var(--border-light); }
.privacy-card p, .privacy-card li { color: rgba(250,250,250,.85); line-height: 1.8; }
.privacy-card ul { padding-left: 1.25rem; }
.privacy-card ul li { margin-bottom: .5rem; }
.privacy-card strong { color: var(--primary); }
.privacy-card a { color: var(--accent); text-decoration: none; }
.privacy-card a:hover { text-decoration: underline; }
.last-updated { color: rgba(250,250,250,.6); font-size: .9rem; margin-bottom: 2rem; }
.highlight-box { background: rgba(234,179,8,.08); border-left: 4px solid var(--primary); padding: 1rem 1.25rem; border-radius: 0 8px 8px 0; margin: 1.5rem 0; }
.highlight-box p { margin-bottom: 0; }
.privacy-card { padding: 1.25rem; }
.privacy-card h2 { font-size: 1.25rem; }

/* --- 子页面追加 --- */
/* 本页专属小样式 */
        .sitemap-section { margin-bottom: 3rem; }
.sitemap-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }
.sitemap-card { background: var(--card-bg); border: 1px solid var(--border-light); border-radius: 12px; padding: 1.5rem; box-shadow: var(--shadow-lift); transition: transform .3s ease, box-shadow .3s ease; }
.sitemap-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-heavy); }
.sitemap-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--primary); margin-bottom: 1rem; }
.sitemap-card ul { list-style: none; padding: 0; margin: 0; }
.sitemap-card li { margin-bottom: .6rem; }
.sitemap-card li a { color: var(--text); text-decoration: none; font-size: .9rem; transition: color .2s; display: inline-flex; align-items: center; gap: .5rem; }
.sitemap-card li a i { font-size: .75rem; color: var(--accent); width: 14px; }
.sitemap-card li a:hover { color: var(--primary); }
.sitemap-card .sub-links { margin-top: .8rem; padding-left: 1.2rem; border-left: 2px solid var(--border-light); }
.sitemap-card .sub-links a { font-size: .8rem; color: rgba(250,250,250,.7); }
.sitemap-card .sub-links a:hover { color: var(--accent); }
.page-hero .page-title { font-size: clamp(1.8rem, 4vw, 2.5rem); font-weight: 800; color: var(--text); margin-bottom: .5rem; }
.page-hero .page-title span { color: var(--primary); }
.page-hero .page-sub { color: rgba(250,250,250,.7); font-size: 1rem; max-width: 700px; margin: 0 auto; }
.quick-links { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin-top: 2rem; }
.quick-links a { padding: .5rem 1.2rem; border: 1px solid var(--border-light); border-radius: 50px; color: var(--text); text-decoration: none; font-size: .85rem; transition: all .3s; background: var(--card-bg); }
.quick-links a:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.table-of-content { background: var(--card-bg); border-radius: 12px; padding: 2rem; margin: 2rem 0; border: 1px solid var(--border-light); }
.table-of-content h3 { color: var(--primary); font-size: 1.2rem; margin-bottom: 1.2rem; text-align: center; }
.table-of-content ul { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: .8rem; }
.table-of-content a { color: var(--text); text-decoration: none; display: block; padding: .5rem .8rem; border-radius: 8px; transition: background .2s; font-size: .9rem; }
.table-of-content a:hover { background: rgba(234,179,8,.1); color: var(--primary); }