:root {
      --primary: #818cf8;
      --accent: #c084fc;
      --bg: #1e1b4b;
      --text: #e0e7ff;
      --card-bg: rgba(255, 255, 255, 0.03);
      --border-soft: rgba(224, 231, 255, 0.1);
      --radius-lg: 24px;
      --radius-md: 18px;
      --shadow-glow: 0 18px 40px -12px rgba(129, 140, 248, 0.25);
      --font-display: 'Inter', sans-serif;
      --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    }

    * {
      box-sizing: border-box;
    }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: var(--font-display);
      letter-spacing: -0.01em;
      overflow-x: hidden;
      scroll-behavior: smooth;
    }

    /* 大圆角柔和风 */
    .section-pill {
      border-radius: var(--radius-lg);
      background: rgba(129, 140, 248, 0.02);
      border: 1px solid var(--border-soft);
      backdrop-filter: blur(2px);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .section-pill:hover {
      box-shadow: var(--shadow-glow);
    }

    /* 弥散阴影 */
    .glow-shadow {
      box-shadow: 0 20px 45px -15px rgba(192, 132, 252, 0.2);
    }

    /* 标签云 Hero */
    .hero-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 0.7rem 1.2rem;
      justify-content: center;
      padding: 1rem 0;
      margin-bottom: 2rem;
    }

    .hero-tag-cloud span {
      font-weight: 600;
      font-size: 1.1rem;
      padding: 0.3rem 0.9rem;
      background: rgba(129, 140, 248, 0.08);
      border-radius: 50rem;
      border: 1px solid rgba(192, 132, 252, 0.2);
      transition: all 0.2s;
      animation: floatTag 6s infinite alternate;
    }

    .hero-tag-cloud span:nth-child(2n) { animation-delay: 1.2s; }
    .hero-tag-cloud span:nth-child(3n) { animation-delay: 2.4s; }

    @keyframes floatTag {
      0% { transform: translateY(0); opacity: 0.7; }
      100% { transform: translateY(-8px); opacity: 1; }
    }

    /* 等宽数字 */
    .mono-num {
      font-family: var(--font-mono);
      font-size: 2.2rem;
      font-weight: 600;
      letter-spacing: -0.03em;
      color: var(--accent);
    }

    /* 对比表格 */
    .compare-table {
      border-collapse: separate;
      border-spacing: 0 8px;
    }

    .compare-table th, .compare-table td {
      background: transparent;
      padding: 0.8rem 1rem;
      border-bottom: 1px solid var(--border-soft);
    }

    .compare-table th {
      font-weight: 700;
      color: #fff;
      background: rgba(129, 140, 248, 0.1);
      border-radius: 16px 16px 8px 8px;
    }

    /* 标签页切换 (特色区块) */
    .feature-tab-panel {
      background: rgba(0, 0, 0, 0.15);
      border-radius: var(--radius-lg);
      padding: 1.5rem;
    }

    .nav-tabs .nav-link {
      color: var(--text);
      border-radius: 50rem;
      background: transparent;
      border: 1px solid var(--border-soft);
      margin-right: 0.5rem;
      padding: 0.5rem 1.2rem;
      font-weight: 500;
    }

    .nav-tabs .nav-link.active {
      background: var(--primary);
      border-color: var(--primary);
      color: #1e1b4b;
      font-weight: 700;
    }

    /* 按钮光泽扫过 */
    .btn-gloss {
      position: relative;
      overflow: hidden;
      transition: background 0.3s ease, transform 0.2s;
      border-radius: 60px;
    }

    .btn-gloss::after {
      content: "";
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(100deg, transparent, rgba(255,255,255,0.3), transparent);
      transition: left 0.5s ease;
    }

    .btn-gloss:hover::after {
      left: 120%;
    }

    .btn-gloss:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 25px -8px var(--accent);
    }

    /* 图片懒加载渐显占位 */
    .lazy-placeholder {
      background: linear-gradient(145deg, rgba(129,140,248,0.1), rgba(192,132,252,0.05));
      background-size: 300% 300%;
      animation: gradientMove 6s ease infinite;
      border-radius: 20px;
    }

    @keyframes gradientMove {
      0% { background-position: 0% 50%; }
      50% { background-position: 100% 50%; }
      100% { background-position: 0% 50%; }
    }

    /* 页脚 & 友链 */
    .footer-links a {
      color: var(--text);
      text-decoration: none;
      margin: 0 1rem;
      opacity: 0.7;
      transition: opacity 0.2s;
    }
    .footer-links a:hover { opacity: 1; }

    /* 时间线步骤条 */
    .timeline-step {
      display: flex;
      gap: 1.5rem;
      position: relative;
      margin-bottom: 2rem;
    }

    .timeline-step::before {
      content: "";
      position: absolute;
      left: 18px;
      top: 45px;
      width: 2px;
      height: calc(100% - 25px);
      background: linear-gradient(to bottom, var(--primary), var(--accent));
      opacity: 0.25;
    }

    .timeline-step:last-child::before { display: none; }

    .timeline-icon {
      width: 42px;
      height: 42px;
      min-width: 42px;
      background: rgba(129, 140, 248, 0.2);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      border: 1px solid var(--primary);
    }

    /* 导航折叠 */
    .navbar-dark .navbar-nav .nav-link {
      color: rgba(224, 231, 255, 0.8);
      border-radius: 60px;
      padding: 0.4rem 1rem;
    }
    .navbar-dark .navbar-nav .nav-link:hover {
      color: #fff;
      background: rgba(129,140,248,0.15);
    }

/* --- 子页面追加 --- */
/* 本页专属小样式:关于页的图文卡片、时间线等 */
    .about-hero {
      padding: 5rem 0 2.5rem;
      text-align: center;
    }
.about-hero h1 {
      font-size: 2.6rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      margin-bottom: 1rem;
    }
.about-hero p.lead {
      font-size: 1.15rem;
      max-width: 640px;
      margin: 0 auto;
      color: var(--text);
      opacity: 0.85;
    }
.about-section {
      padding: 3.5rem 0;
    }
.about-card {
      background: var(--card-bg);
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-lg);
      padding: 2rem;
      height: 100%;
      transition: transform .25s ease, box-shadow .25s ease;
    }
.about-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }
.about-card .icon-wrap {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, rgba(129,140,248,.18), rgba(192,132,252,.18));
      margin-bottom: 1.2rem;
      font-size: 1.4rem;
      color: var(--primary);
    }
.about-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: .7rem;
      color: var(--text);
    }
.about-card p {
      font-size: .95rem;
      line-height: 1.7;
      color: var(--text);
      opacity: .8;
      margin-bottom: 0;
    }
.timeline-wrap {
      position: relative;
      padding-left: 2rem;
    }
.timeline-wrap::before {
      content: '';
      position: absolute;
      left: 6px;
      top: 8px;
      bottom: 8px;
      width: 2px;
      background: linear-gradient(to bottom, var(--primary), var(--accent));
      opacity: .35;
      border-radius: 2px;
    }
.timeline-item {
      position: relative;
      margin-bottom: 1.8rem;
    }
.timeline-item::before {
      content: '';
      position: absolute;
      left: -1.55rem;
      top: .45rem;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 0 3px rgba(129,140,248,.2);
    }
.timeline-item h4 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: .3rem;
      color: var(--text);
    }
.timeline-item p {
      font-size: .9rem;
      color: var(--text);
      opacity: .75;
      line-height: 1.6;
      margin-bottom: 0;
    }
.stat-grid .num {
      font-family: var(--font-mono);
      font-size: 2rem;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.2;
    }
.stat-grid .label {
      font-size: .85rem;
      color: var(--text);
      opacity: .7;
    }
.about-footer-cta {
      text-align: center;
      padding: 3rem 0 4rem;
    }

/* --- 子页面追加 --- */
/* 本页专属补充样式 */
        .legal-hero {
            padding: 120px 0 60px;
            text-align: center;
        }
.legal-section {
            background: var(--card-bg);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 40px;
            margin-bottom: 30px;
            backdrop-filter: blur(8px);
        }
.legal-section h2 {
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 20px;
            font-size: 1.5rem;
            display: flex;
            align-items: center;
            gap: 12px;
        }
.legal-section h2 i {
            color: var(--accent);
            font-size: 1.2rem;
        }
.legal-section p, .legal-section li {
            color: var(--text);
            line-height: 1.8;
            font-size: 0.95rem;
        }
.legal-section ul {
            padding-left: 20px;
        }
.legal-section ul li {
            margin-bottom: 8px;
        }
.legal-highlight {
            background: rgba(129, 140, 248, 0.08);
            border-left: 3px solid var(--primary);
            padding: 16px 20px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 20px 0;
        }
.legal-updated {
            text-align: center;
            color: var(--text);
            opacity: 0.7;
            font-size: 0.9rem;
            margin-top: 40px;
        }

/* --- 子页面追加 --- */
/* 确保所有bootstrap组件覆盖为站点配色（实际未用组件类，仅栅格） */
        .privacy-block {
            background: var(--card-bg);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 2.2rem 2rem;
            box-shadow: var(--shadow-glow);
            backdrop-filter: blur(8px);
        }
.privacy-title-icon {
            color: var(--primary);
            font-size: 1.8rem;
            margin-right: 12px;
        }
.privacy-section-title {
            font-weight: 700;
            font-size: 1.5rem;
            letter-spacing: -0.02em;
            color: var(--text);
            border-left: 4px solid var(--primary);
            padding-left: 18px;
            margin-bottom: 1.8rem;
            margin-top: 2.5rem;
        }
.privacy-section-title:first-of-type {
            margin-top: 0.5rem;
        }
.privacy-list {
            list-style: none;
            padding-left: 0;
        }
.privacy-list li {
            padding-left: 1.8rem;
            position: relative;
            margin-bottom: 0.9rem;
            color: rgba(224, 231, 255, 0.85);
            line-height: 1.7;
        }
.privacy-list li::before {
            content: "\f0da";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--primary);
            position: absolute;
            left: 0;
            top: 0;
            opacity: 0.8;
        }
.privacy-strong {
            color: var(--text);
            font-weight: 600;
        }
.privacy-meta {
            color: var(--accent);
            font-family: var(--font-mono);
            font-size: 0.9rem;
        }
/* 导航高亮当前页 */
        .navbar-nav .nav-link.active {
            color: var(--primary) !important;
            font-weight: 600;
        }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#e0e7ff !important; border-color:rgba(255,255,255,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#e0e7ff !important; }
.accordion-item { background:rgba(255,255,255,.04) !important; color:#e0e7ff !important; border-color:rgba(255,255,255,.12) !important; }
.accordion-button { background:rgba(255,255,255,.04) !important; color:#e0e7ff !important; }
.accordion-body { background:transparent !important; color:#e0e7ff !important; }
.accordion-header { background:transparent !important; }
.accordion-button::after { filter: invert(1) grayscale(1) brightness(2); }