:root {
      --yy-primary: #b45309;
      --yy-accent: #ca8a04;
      --yy-bg: #fefce8;
      --yy-ink: #451a03;
      --yy-radius: 8px;
      --yy-shadow: 0 4px 20px rgba(180, 83, 9, 0.06);
      --yy-font-mono: 'SFMono-Regular', 'JetBrains Mono', 'IBM Plex Mono', Consolas, monospace;
    }

    * {
      box-sizing: border-box;
    }

    body {
      background-color: var(--yy-bg);
      color: var(--yy-ink);
      font-family: 'Inter', system-ui, -apple-system, sans-serif;
      font-weight: 400;
      line-height: 1.5;
      letter-spacing: -0.01em;
      font-size: 0.95rem;
      overflow-x: hidden;
    }

    h1, h2, h3, h4, .navbar-brand {
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--yy-ink);
    }

    /* 渐变光晕背景 */
    .bg-aura {
      position: fixed;
      top: -20%;
      left: -10%;
      width: 120vw;
      height: 120vh;
      z-index: -2;
      background:
        radial-gradient(circle at 15% 30%, rgba(202, 138, 4, 0.15) 0%, transparent 30%),
        radial-gradient(circle at 85% 70%, rgba(180, 83, 9, 0.18) 0%, transparent 35%),
        radial-gradient(circle at 50% 110%, rgba(202, 138, 4, 0.1) 0%, transparent 40%);
      pointer-events: none;
    }

    /* 导航栏吸顶 + 背景透明度变化 */
    .navbar {
      backdrop-filter: blur(12px);
      background: rgba(254, 252, 232, 0.75) !important;
      transition: background 0.2s ease, box-shadow 0.2s ease;
      border-bottom: 1px solid rgba(180, 83, 9, 0.1);
      padding-top: 0.7rem;
      padding-bottom: 0.7rem;
      box-shadow: 0 2px 8px rgba(69, 26, 3, 0.02);
    }
    .navbar.scrolled {
      background: rgba(254, 252, 232, 0.92) !important;
      box-shadow: 0 6px 24px rgba(69, 26, 3, 0.08);
    }
    .navbar .nav-link {
      color: var(--yy-ink);
      font-weight: 500;
      font-size: 0.9rem;
      padding-left: 0.8rem !important;
      padding-right: 0.8rem !important;
    }
    .navbar .nav-link:hover {
      color: var(--yy-primary);
    }

    .navbar-brand {
      font-size: 1.5rem;
      font-weight: 900;
      color: var(--yy-primary) !important;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* 卡片错落滚动渐显 */
    .reveal-group {
      display: flex;
      flex-wrap: wrap;
      gap: 1.2rem;
    }
    .reveal-card {
      opacity: 0;
      transform: translateY(24px);
      animation: riseIn 0.6s cubic-bezier(.22,1,.36,1) forwards;
      transition: box-shadow 0.25s ease, transform 0.25s ease;
    }
    @keyframes riseIn {
      0% { opacity: 0; transform: translateY(24px); }
      100% { opacity: 1; transform: translateY(0); }
    }
    /* 依次延迟 */
    .d1 { animation-delay: 0.05s; }
    .d2 { animation-delay: 0.15s; }
    .d3 { animation-delay: 0.25s; }
    .d4 { animation-delay: 0.35s; }

    /* 图片hover放大 + 文字遮罩 */
    .img-hover-mask {
      overflow: hidden;
      border-radius: var(--yy-radius);
      position: relative;
    }
    .img-hover-mask img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.35s ease;
    }
    .img-hover-mask .mask-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(0deg, rgba(69,26,3,0.55) 0%, transparent 50%);
      opacity: 0;
      transition: opacity 0.25s ease;
      display: flex;
      align-items: flex-end;
      padding: 1rem;
      color: #fefce8;
      font-weight: 600;
    }
    .img-hover-mask:hover img {
      transform: scale(1.06);
    }
    .img-hover-mask:hover .mask-overlay {
      opacity: 1;
    }

    /* 标签云 */
    .tagcloud-hero {
      display: flex;
      flex-wrap: wrap;
      gap: 0.65rem;
      justify-content: center;
      max-width: 700px;
      margin: 1.5rem auto 2rem;
    }
    .tagcloud-hero .badge-tag {
      background: rgba(180, 83, 9, 0.08);
      color: var(--yy-primary);
      border: 1px solid rgba(180, 83, 9, 0.1);
      border-radius: 100px;
      padding: 0.4rem 1rem;
      font-size: 0.85rem;
      font-weight: 500;
      backdrop-filter: blur(2px);
    }

    /* 区块 */
    .section-block {
      padding: 2.2rem 0 0.8rem;
      border-bottom: 1px solid rgba(180, 83, 9, 0.07);
    }
    .section-title {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 1.2rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    /* 对比表格 */
    .table-compare {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.9rem;
      background: rgba(255,255,255,0.3);
      backdrop-filter: blur(2px);
      border-radius: var(--yy-radius);
      overflow: hidden;
      box-shadow: var(--yy-shadow);
    }
    .table-compare th {
      background: rgba(180, 83, 9, 0.08);
      padding: 0.9rem 1rem;
      font-weight: 700;
      border-bottom: 1px solid rgba(180, 83, 9, 0.15);
    }
    .table-compare td {
      padding: 0.8rem 1rem;
      border-bottom: 1px solid rgba(180, 83, 9, 0.06);
      vertical-align: top;
    }
    .table-compare tr:last-child td {
      border-bottom: none;
    }

    /* 手风琴 */
    .accordion-item {
      background: transparent;
      border: 1px solid rgba(180, 83, 9, 0.1);
      border-radius: var(--yy-radius) !important;
      margin-bottom: 0.75rem;
      overflow: hidden;
    }
    .accordion-button {
      background: rgba(255,255,255,0.2);
      color: var(--yy-ink);
      font-weight: 600;
      font-size: 0.95rem;
      padding: 0.9rem 1.2rem;
      box-shadow: none;
    }
    .accordion-button:not(.collapsed) {
      background: rgba(180, 83, 9, 0.06);
      color: var(--yy-primary);
      box-shadow: none;
    }
    .accordion-body {
      background: rgba(255,255,255,0.15);
      font-size: 0.9rem;
    }

    /* 特色图标列表 */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 1.2rem;
    }
    .feature-item {
      background: rgba(255,255,255,0.3);
      border-radius: var(--yy-radius);
      padding: 1.2rem 1rem;
      box-shadow: var(--yy-shadow);
      border: 1px solid rgba(180, 83, 9, 0.06);
    }
    .feature-item i {
      font-size: 1.6rem;
      color: var(--yy-primary);
      margin-bottom: 0.6rem;
    }

    /* 等宽数据 */
    .mono-num {
      font-family: var(--yy-font-mono);
      font-weight: 600;
      color: var(--yy-primary);
    }

    /* 页脚 & 友情链接 */
    .footer-links {
      padding: 2.2rem 0 1.2rem;
      border-top: 1px solid rgba(180, 83, 9, 0.08);
    }
    .friend-links-title {
      font-size: 0.85rem;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--yy-primary);
      margin-bottom: 0.8rem;
    }

    a {
      color: var(--yy-primary);
      text-decoration: none;
      transition: opacity 0.15s;
    }
    a:hover {
      text-decoration: underline;
      color: var(--yy-accent);
    }

    .btn-custom {
      background: var(--yy-primary);
      color: #fefce8;
      font-weight: 600;
      border-radius: 50px;
      padding: 0.7rem 1.8rem;
      border: none;
      transition: background 0.2s;
    }
    .btn-custom:hover {
      background: var(--yy-accent);
      color: #fff;
    }

    .cta-box {
      background: linear-gradient(145deg, rgba(180, 83, 9, 0.06), rgba(202, 138, 4, 0.03));
      border-radius: 16px;
      padding: 2rem;
      margin: 1.5rem 0 2rem;
    }

    /* 极简留白调整 */
    .hero-mini {
      padding: 2.5rem 0 1rem;
    }
    .container-narrow {
      max-width: 920px;
      margin: 0 auto;
    }

/* --- 子页面追加 --- */
/* 由于本站CSS变量已有完整设计，这里仅微调个别组件间距与文字颜色 */
        .disclaimer-hero {
            background: linear-gradient(180deg, var(--yy-bg) 0%, rgba(254, 252, 232, 0.9) 100%);
        }
.section-block h2 i {
            color: var(--yy-primary);
        }
.legal-list li {
            padding-left: 1.75rem;
            position: relative;
            margin-bottom: 0.75rem;
            color: var(--yy-ink);
        }
.legal-list li::before {
            content: "\f14a";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 0.1rem;
            color: var(--yy-accent);
        }
.contact-box {
            background: rgba(180, 83, 9, 0.04);
            border-left: 4px solid var(--yy-primary);
            padding: 1.2rem 1.5rem;
            border-radius: var(--yy-radius);
        }
/* 覆盖bootstrap可能带来的白底 (保险) */
        .accordion-item, .accordion-button {
            background-color: transparent !important;
            color: var(--yy-ink) !important;
        }

/* --- 子页面追加 --- */
/* 站点地图专属样式 */
        .sitemap-section { margin-bottom: 2rem; }
.sitemap-card { background: var(--yy-bg); border-radius: var(--yy-radius); padding: 1.5rem; box-shadow: var(--yy-shadow); border: 1px solid rgba(180,83,9,.12); height: 100%; }
.sitemap-card h3 { color: var(--yy-primary); font-weight: 800; font-size: 1.15rem; margin-bottom: 1rem; border-left: 4px solid var(--yy-accent); padding-left: .8rem; }
.sitemap-card ul { list-style: none; padding: 0; margin: 0; }
.sitemap-card li { padding: .3rem 0; border-bottom: 1px dashed rgba(180,83,9,.1); }
.sitemap-card li:last-child { border-bottom: none; }
.sitemap-card a { color: var(--yy-ink); text-decoration: none; transition: color .2s; font-size: .95rem; display: flex; align-items: center; gap: .5rem; }
.sitemap-card a:hover { color: var(--yy-primary); padding-left: 4px; }
.sitemap-card a i { color: var(--yy-accent); font-size: .85rem; width: 20px; text-align: center; }
.sitemap-intro { background: linear-gradient(135deg, rgba(180,83,9,.05), rgba(202,138,4,.08)); border: 1px solid rgba(180,83,9,.15); border-radius: var(--yy-radius); padding: 1.8rem 2rem; margin-bottom: 2.5rem; }
.sitemap-intro h1 { color: var(--yy-primary); font-weight: 900; font-size: 1.8rem; margin-bottom: .8rem; }
.sitemap-intro p { color: var(--yy-ink); opacity: .85; max-width: 800px; margin: 0; }
.mono-badge { font-family: var(--yy-font-mono); background: rgba(180,83,9,.1); padding: 2px 10px; border-radius: 4px; font-size: .8rem; color: var(--yy-primary); }
.quick-links { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1rem; }
.quick-links a { background: var(--yy-bg); border: 1px solid rgba(180,83,9,.2); border-radius: 20px; padding: .3rem 1rem; font-size: .85rem; color: var(--yy-primary); text-decoration: none; transition: all .2s; }
.quick-links a:hover { background: var(--yy-primary); color: var(--yy-bg); border-color: var(--yy-primary); }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.card-text { color:#451a03 !important; }
.table { color:#451a03 !important; border-color:rgba(0,0,0,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#451a03 !important; }
.accordion-header { background:transparent !important; }