:root {
      --primary: #38bdf8;
      --accent: #a78bfa;
      --bg-dark: #0f172a;
      --text-light: #e2e8f0;
      --card-bg: #1e293b;
      --deep-shadow: 8px 10px 24px rgba(0,0,0,0.65);
      --glow: 0 0 18px rgba(56,189,248,0.3);
    }
    * { box-sizing: border-box; }
    body {
      background-color: var(--bg-dark);
      color: var(--text-light);
      font-family: 'Inter', sans-serif;
      font-weight: 300;
      letter-spacing: 0.2px;
    }
    /* 滚动进度条 */
    #progressBar {
      position: fixed;
      top: 0; left: 0;
      height: 4px;
      width: 0%;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      z-index: 9999;
      border-radius: 0 4px 4px 0;
      box-shadow: 0 0 12px var(--primary);
    }
    /* 吸顶导航 */
    .navbar-float {
      backdrop-filter: blur(8px);
      background: rgba(15, 23, 42, 0.85) !important;
      box-shadow: 0 6px 20px rgba(0,0,0,0.6);
      border-bottom: 1px solid #2d3a55;
    }
    .navbar-brand {
      font-weight: 900;
      font-size: 1.6rem;
      color: var(--primary) !important;
      text-shadow: 0 0 12px var(--primary);
      letter-spacing: 1px;
    }
    .nav-link {
      color: var(--text-light) !important;
      font-weight: 500;
      margin: 0 8px;
    }
    .nav-link:hover { color: var(--primary) !important; }
    /* hero 大数字 + 双色块 */
    .hero-split {
      display: flex;
      align-items: center;
      min-height: 70vh;
      padding: 2rem 0;
    }
    .hero-big-num {
      font-size: 5rem;
      font-weight: 900;
      line-height: 1;
      font-family: 'Inter', sans-serif;
      background: linear-gradient(145deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      display: inline-block;
      margin-bottom: 1rem;
    }
    .left-panel {
      background: #1e293b;
      padding: 3rem;
      border-radius: 40px 12px 12px 40px;
      box-shadow: var(--deep-shadow);
      border-left: 6px solid var(--primary);
      position: relative;
    }
    .right-panel {
      background: #1a2338;
      padding: 3rem;
      border-radius: 12px 40px 40px 12px;
      box-shadow: var(--deep-shadow);
      border-right: 6px solid var(--accent);
      position: relative;
    }
    .stat-card {
      background: rgba(255,255,255,0.02);
      border: 1px solid #3b4a63;
      padding: 1.2rem;
      border-radius: 24px;
      backdrop-filter: blur(2px);
    }
    .font-mono {
      font-family: 'SF Mono', 'Fira Code', monospace;
      font-weight: 600;
      color: var(--primary);
    }
    /* 拟物厚重卡片 */
    .heavy-card {
      background: #1e293b;
      border-radius: 28px;
      box-shadow: 8px 12px 24px rgba(0,0,0,0.7), inset 0 1px 0 #3d4d6b;
      padding: 2rem;
      transition: transform 0.2s ease, box-shadow 0.25s ease;
      border: 1px solid #2b3a55;
    }
    .heavy-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 22px 38px rgba(0,0,0,0.9), 0 0 0 1px var(--primary);
    }
    .table-deep {
      background: #172136;
      border-radius: 32px;
      box-shadow: inset 0 2px 6px #0b111e, 0 12px 22px #000;
    }
    .table-deep th, .table-deep td {
      border-color: #334155 !important;
      color: var(--text-light);
      padding: 1.1rem;
    }
    .table-deep thead th {
      background: #25334d;
      font-weight: 700;
      color: var(--primary);
    }
    /* 时间线 */
    .timeline {
      border-left: 4px solid var(--accent);
      margin-left: 20px;
      padding-left: 24px;
    }
    .timeline-item {
      position: relative;
      margin-bottom: 2rem;
    }
    .timeline-item::before {
      content: '';
      position: absolute;
      left: -33px;
      top: 6px;
      width: 14px; height: 14px;
      background: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 12px var(--primary);
    }
    /* 标签页自定义 */
    .nav-pills .nav-link {
      background: #1e293b;
      color: var(--text-light) !important;
      border-radius: 40px;
      margin: 0 6px;
      padding: 0.7rem 1.5rem;
      font-weight: 600;
    }
    .nav-pills .nav-link.active {
      background: linear-gradient(145deg, var(--primary), #3b82f6);
      color: #0f172a !important;
      box-shadow: 0 6px 16px rgba(56,189,248,0.4);
    }
    .tab-content {
      background: #1a2338;
      border-radius: 36px;
      padding: 2rem;
      box-shadow: var(--deep-shadow);
    }
    /* 渐显图片 */
    .lazy-img {
      opacity: 0;
      transition: opacity 0.6s ease;
      background: linear-gradient(120deg, #263449, #1f2937);
    }
    .lazy-img.loaded { opacity: 1; }
    /* 等宽字体数据 */
    .data-font { font-family: 'JetBrains Mono', 'Fira Code', monospace; }
    /* 通用小标题 */
    .section-title {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--text-light);
      margin-bottom: 2rem;
      letter-spacing: -0.02em;
      text-shadow: 0 4px 0 #0b111e;
    }
    .footer-link {
      color: var(--accent);
      text-decoration: none;
      font-weight: 500;
    }
    .footer-link:hover { color: var(--primary); }
    .bg-placeholder {
      background: linear-gradient(135deg, #202b41, #1e293b);
      border-radius: 24px;
      box-shadow: inset 0 0 0 1px #31405a;
    }

/* --- 子页面追加 --- */
background: linear-gradient(135deg, rgba(15,23,42,0.9), rgba(30,41,59,0.7)), url(' {随机图片}
.about-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1.5rem;
        }
.about-hero .lead {
            color: var(--text-light);
            max-width: 800px;
            margin: 0 auto;
            opacity: 0.9;
        }
.about-card {
            background: var(--card-bg);
            border: 1px solid rgba(56,189,248,0.15);
            border-radius: 16px;
            padding: 40px;
            margin-bottom: 30px;
            box-shadow: var(--deep-shadow);
            transition: all 0.4s ease;
        }
.about-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
            box-shadow: 0 12px 30px rgba(56,189,248,0.2);
        }
.about-card h2 {
            color: var(--primary);
            font-weight: 700;
            font-size: 1.6rem;
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 12px;
        }
.about-card h2 i {
            font-size: 1.4rem;
            color: var(--accent);
        }
.about-card p {
            color: var(--text-light);
            line-height: 1.8;
            opacity: 0.9;
        }
.timeline-item .date {
            color: var(--accent);
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 5px;
        }
.timeline-item .content {
            color: var(--text-light);
            line-height: 1.7;
            opacity: 0.85;
        }
.stat-card:hover {
            border-color: var(--accent);
            box-shadow: 0 0 25px rgba(167,139,250,0.2);
        }
.stat-card .number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            font-family: 'Inter', sans-serif;
        }
.stat-card .label {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-top: 10px;
            opacity: 0.8;
        }
.about-nav .nav-link {
            color: var(--text-light);
            opacity: 0.7;
            transition: all 0.3s;
        }
.about-nav .nav-link:hover,
        .about-nav .nav-link.active {
            color: var(--primary);
            opacity: 1;
        }
.about-nav .nav-link.active {
            border-bottom: 2px solid var(--primary);
        }

/* --- 子页面追加 --- */
/* 本页专属样式 */
        .guide-hero { padding: 80px 0 40px; background: linear-gradient(135deg, rgba(56,189,248,0.08) 0%, rgba(167,139,250,0.05) 100%); }
.guide-section { padding: 50px 0; }
.guide-section h2 { color: var(--primary); margin-bottom: 20px; }
.guide-section h3 { color: var(--text-light); margin: 20px 0 12px; font-size: 1.2rem; }
.guide-section p, .guide-section li { color: var(--text-light); opacity: 0.85; line-height: 1.8; }
.guide-section ul { padding-left: 20px; }
.guide-section ul li { margin-bottom: 8px; }
.step-box { background: var(--card-bg); border: 1px solid rgba(56,189,248,0.15); border-radius: 12px; padding: 24px; margin-bottom: 20px; box-shadow: var(--deep-shadow); transition: transform 0.3s ease; }
.step-box:hover { transform: translateY(-4px); box-shadow: var(--glow); }
.step-num { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; background: var(--primary); color: var(--bg-dark); border-radius: 50%; font-weight: 800; margin-bottom: 12px; }
.tip-box { background: rgba(167,139,250,0.1); border-left: 4px solid var(--accent); padding: 16px 20px; border-radius: 0 8px 8px 0; margin: 20px 0; }
.tip-box p { margin: 0; }
.shortcut-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; margin: 20px 0; }
.shortcut-item { background: var(--card-bg); border: 1px solid rgba(56,189,248,0.1); border-radius: 8px; padding: 16px; display: flex; justify-content: space-between; align-items: center; }
.shortcut-item kbd { background: rgba(56,189,248,0.2); color: var(--primary); border-radius: 4px; padding: 4px 8px; font-family: 'Inter', monospace; font-size: 0.85rem; }
.badge-guide { background: rgba(167,139,250,0.15); color: var(--accent); padding: 4px 10px; border-radius: 20px; font-size: 0.8rem; font-weight: 600; }
.icon-list { list-style: none; padding: 0; }
.icon-list li { padding: 8px 0; display: flex; align-items: flex-start; gap: 12px; }
.icon-list i { color: var(--primary); margin-top: 5px; }
.guide-nav-active { color: var(--primary) !important; border-bottom: 2px solid var(--primary); }
.guide-hero { padding: 50px 0 30px; }
.guide-section { padding: 30px 0; }

/* --- 子页面追加 --- */
/* 页面专属补充样式 */
        .disclaimer-hero {
            background: linear-gradient(135deg, rgba(56,189,248,0.15) 0%, rgba(167,139,250,0.1) 100%);
            border: 1px solid rgba(56,189,248,0.2);
            border-radius: 16px;
            padding: 3rem 2rem;
            margin-bottom: 3rem;
        }
.disclaimer-section {
            background: var(--card-bg);
            border-radius: 12px;
            padding: 2rem;
            margin-bottom: 1.5rem;
            border-left: 4px solid var(--primary);
            box-shadow: var(--deep-shadow);
        }
.disclaimer-section h2 {
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
.disclaimer-section p {
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 1rem;
        }
.disclaimer-list {
            list-style: none;
            padding: 0;
        }
.disclaimer-list li {
            padding: 0.8rem 0;
            border-bottom: 1px solid rgba(56,189,248,0.1);
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-light);
            line-height: 1.7;
        }
.disclaimer-list li:last-child {
            border-bottom: none;
        }
.disclaimer-list i {
            color: var(--accent);
            margin-top: 4px;
            min-width: 20px;
        }
.contact-card {
            background: rgba(56,189,248,0.08);
            border: 1px solid rgba(56,189,248,0.2);
            border-radius: 12px;
            padding: 2rem;
            text-align: center;
        }
.contact-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
.nav-link.active-page {
            color: var(--primary) !important;
            font-weight: 700;
            position: relative;
        }
.nav-link.active-page::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

/* --- 子页面追加 --- */
/* 排行榜专属样式 */
        .rank-tabs {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 32px;
            border-bottom: 2px solid var(--card-bg);
            padding-bottom: 12px;
        }
.rank-tabs .tab-btn {
            padding: 8px 20px;
            border-radius: 24px;
            background: var(--card-bg);
            color: var(--text-light);
            border: 1px solid transparent;
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
        }
.rank-tabs .tab-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
.rank-tabs .tab-btn.active {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--glow);
        }
.rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: background 0.3s ease;
            border-radius: 8px;
        }
.rank-item:hover {
            background: rgba(56,189,248,0.05);
            padding-left: 8px;
        }
.rank-num {
            font-family: 'Inter', sans-serif;
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            min-width: 48px;
            text-align: center;
            text-shadow: var(--glow);
        }
.rank-num.top3 {
            color: var(--accent);
        }
.rank-thumb {
            width: 64px;
            height: 84px;
            border-radius: 6px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--card-bg);
        }
.rank-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
.rank-info {
            flex: 1;
            min-width: 0;
        }
.rank-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
.rank-meta {
            font-size: 13px;
            color: rgba(226,232,240,0.6);
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
.rank-meta span i {
            margin-right: 4px;
            color: var(--primary);
        }
.rank-score {
            font-family: 'Inter', sans-serif;
            font-size: 16px;
            font-weight: 700;
            color: var(--accent);
            text-align: right;
            min-width: 60px;
        }
.trend-up { color: #4ade80; font-size: 12px; }
.trend-down { color: #f87171; font-size: 12px; }
.trend-flat { color: #94a3b8; font-size: 12px; }
.rank-thumb { width: 48px; height: 64px; }
.rank-num { font-size: 20px; min-width: 36px; }
.rank-title { font-size: 14px; }
.rank-meta { font-size: 12px; }
.rank-score { font-size: 14px; min-width: 48px; }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#e2e8f0 !important; border-color:rgba(255,255,255,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#e2e8f0 !important; }
.accordion-item { background:rgba(255,255,255,.04) !important; color:#e2e8f0 !important; border-color:rgba(255,255,255,.12) !important; }
.accordion-button { background:rgba(255,255,255,.04) !important; color:#e2e8f0 !important; }
.accordion-body { background:transparent !important; color:#e2e8f0 !important; }
.accordion-header { background:transparent !important; }
.accordion-button::after { filter: invert(1) grayscale(1) brightness(2); }