:root {
    --primary: #eab308;
    --accent: #f59e0b;
    --bg: #18181b;
    --text: #fafafa;
    --radius-lg: 24px;
    --radius-md: 16px;
    --shadow-soft: 0 12px 30px rgba(0,0,0,0.3), 0 4px 10px rgba(0,0,0,0.2);
    --font-display: 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.7;
    overflow-x: hidden;
  }
  /* 点阵背景 */
  body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image: radial-gradient(circle, rgba(234,179,8,0.06) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
    z-index: 0;
  }
  .container-custom {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 2;
  }
  /* 导航栏 */
  .navbar-js {
    background: rgba(24, 24, 27, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(234,179,8,0.15);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
  }
  .navbar-brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary) !important;
    letter-spacing: 1px;
    text-decoration: none;
  }
  .navbar-nav .nav-link {
    color: var(--text) !important;
    font-weight: 500;
    margin: 0 12px;
    transition: color 0.3s;
    font-size: 0.95rem;
  }
  .navbar-nav .nav-link:hover { color: var(--primary) !important; }
  .navbar-toggler {
    border-color: rgba(234,179,8,0.3);
    background: transparent;
  }
  .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(234,179,8,1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  }
  /* Hero 区 */
  .hero-section {
    padding: 100px 0 80px;
    text-align: center;
    position: relative;
    background: linear-gradient(180deg, #1f1f23 0%, var(--bg) 100%);
  }
  .hero-title {
    font-size: 3.8rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
  }
  .hero-subtitle {
    font-size: 1.15rem;
    color: rgba(250,250,250,0.7);
    max-width: 560px;
    margin: 0 auto 40px;
    font-weight: 300;
  }
  .tag-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
  }
  .tag-cloud .tag-item {
    display: inline-block;
    background: rgba(234,179,8,0.1);
    border: 1px solid rgba(234,179,8,0.25);
    color: var(--primary);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    animation: floatTag 6s infinite ease-in-out;
    backdrop-filter: blur(4px);
  }
  .tag-cloud .tag-item:nth-child(2) { animation-delay: 0.5s; }
  .tag-cloud .tag-item:nth-child(3) { animation-delay: 1s; }
  .tag-cloud .tag-item:nth-child(4) { animation-delay: 1.5s; }
  .tag-cloud .tag-item:nth-child(5) { animation-delay: 2s; }
  .tag-cloud .tag-item:nth-child(6) { animation-delay: 2.5s; }
  .tag-cloud .tag-item:nth-child(7) { animation-delay: 3s; }
  @keyframes floatTag {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
  }
  .hero-btn {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #000 !important;
    border: none;
    padding: 14px 42px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 8px 25px rgba(234,179,8,0.3);
    text-decoration: none;
    display: inline-block;
  }
  .hero-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 30px rgba(234,179,8,0.4);
  }
  /* 区块通用 */
  .section-block {
    padding: 80px 0;
    border-bottom: 1px solid rgba(255,255,255,0.03);
  }
  .section-title {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
    color: var(--text);
  }
  .section-subtitle {
    font-size: 1rem;
    color: rgba(250,250,250,0.5);
    margin-bottom: 48px;
    font-weight: 300;
  }
  .title-accent {
    color: var(--primary);
  }
  /* 统计区块 */
  .stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  .stat-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
    padding: 32px 16px;
    text-align: center;
    transition: transform 0.3s ease, border-color 0.3s ease;
  }
  .stat-card:hover {
    transform: translateY(-4px);
    border-color: rgba(234,179,8,0.4);
  }
  .stat-number {
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1.2;
  }
  .stat-label {
    color: rgba(250,250,250,0.6);
    font-size: 0.9rem;
    margin-top: 8px;
    letter-spacing: 1px;
  }
  /* 使用说明手风琴 */
  .accordion-item {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: var(--radius-md) !important;
    margin-bottom: 16px;
    overflow: hidden;
  }
  .accordion-button {
    background: transparent;
    color: var(--text);
    font-weight: 600;
    font-size: 1.05rem;
    padding: 20px 24px;
    box-shadow: none !important;
  }
  .accordion-button:not(.collapsed) {
    color: var(--primary);
    background: rgba(234,179,8,0.05);
  }
  .accordion-button::after {
    filter: invert(80%) sepia(50%) saturate(2000%) hue-rotate(0deg);
  }
  .accordion-body {
    color: rgba(250,250,250,0.75);
    padding: 0 24px 24px;
    font-weight: 300;
  }
  /* 特色图标列表 */
  .feature-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.02);
    border: 1px solid transparent;
    transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
    margin-bottom: 16px;
  }
  .feature-item:hover {
    transform: scale(1.02);
    border-color: var(--primary);
    background: rgba(234,179,8,0.04);
  }
  .feature-icon {
    font-size: 1.8rem;
    color: var(--primary);
    min-width: 60px;
    height: 60px;
    background: rgba(234,179,8,0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .feature-text h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
  }
  .feature-text p {
    color: rgba(250,250,250,0.6);
    font-size: 0.95rem;
    font-weight: 300;
    margin: 0;
  }
  /* FAQ */
  .faq-item {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 16px;
    transition: border-color 0.3s;
  }
  .faq-item:hover { border-color: rgba(234,179,8,0.3); }
  .faq-question {
    font-weight: 600;
    font-size: 1.05rem;
    margin-bottom: 12px;
    color: var(--primary);
  }
  .faq-answer {
    color: rgba(250,250,250,0.7);
    font-weight: 300;
    line-height: 1.8;
  }
  /* CTA 区块 */
  .cta-section {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, rgba(234,179,8,0.08), rgba(245,158,11,0.02));
    border-radius: var(--radius-lg);
    margin: 80px 0;
  }
  .cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
  }
  .cta-text {
    color: rgba(250,250,250,0.6);
    max-width: 480px;
    margin: 0 auto 32px;
    font-weight: 300;
  }
  /* 友情链接 */
  .friend-links {
    padding: 48px 0;
    border-top: 1px solid rgba(255,255,255,0.05);
    text-align: center;
  }
  .friend-links-title {
    font-size: 1rem;
    color: rgba(250,250,250,0.4);
    letter-spacing: 2px;
    margin-bottom: 16px;
    text-transform: uppercase;
    font-weight: 500;
  }
  .friend-links-content {
    color: rgba(250,250,250,0.6);
    font-size: 0.9rem;
  }
  /* 页脚 */
  .footer-site {
    padding: 40px 0 60px;
    border-top: 1px solid rgba(255,255,255,0.03);
    text-align: center;
    color: rgba(250,250,250,0.4);
    font-size: 0.85rem;
  }
  .footer-site a {
    color: var(--primary);
    text-decoration: none;
  }
  .footer-links {
    margin-bottom: 16px;
  }
  .footer-links a {
    margin: 0 12px;
    color: rgba(250,250,250,0.5);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
  }
  .footer-links a:hover { color: var(--primary); }
  /* 懒加载占位 */
  img.lazy-img {
    opacity: 0;
    transition: opacity 0.5s ease;
    background: #27272a;
    border-radius: var(--radius-md);
  }
  img.lazy-img.loaded { opacity: 1; }
  /* 响应式 */
  @media (max-width: 768px) {
    .hero-title { font-size: 2.4rem; }
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .section-title { font-size: 1.8rem; }
    .cta-title { font-size: 1.8rem; }
    .hero-section { padding: 70px 0 60px; }
    .tag-cloud .tag-item { padding: 8px 16px; font-size: 0.8rem; }
  }
  @media (max-width: 480px) {
    .stat-grid { grid-template-columns: 1fr; }
    .feature-item { flex-direction: column; }
  }

/* --- 子页面追加 --- */
/* 本页专属小样式（会合并进站点CSS） */
    .about-hero {
      background: linear-gradient(135deg, rgba(234, 179, 8, 0.12) 0%, rgba(24, 24, 27, 0.6) 60%);
      border-bottom: 1px solid rgba(234, 179, 8, 0.15);
    }
.about-mission-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(234, 179, 8, 0.12);
      border-radius: var(--radius-md);
      padding: 1.8rem;
      height: 100%;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
.about-mission-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-soft);
      border-color: rgba(234, 179, 8, 0.35);
    }
.about-mission-icon {
      font-size: 2rem;
      color: var(--primary);
      margin-bottom: 1rem;
    }
.about-timeline {
      position: relative;
      padding-left: 2rem;
      border-left: 2px solid rgba(234, 179, 8, 0.25);
    }
.about-timeline-item {
      position: relative;
      padding-bottom: 2rem;
    }
.about-timeline-item::before {
      content: '';
      position: absolute;
      left: -2.4rem;
      top: 0.3rem;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 0 4px rgba(234, 179, 8, 0.15);
    }
.about-timeline-year {
      color: var(--primary);
      font-weight: 700;
      font-size: 1.1rem;
      letter-spacing: 0.05em;
    }
.about-value-list li {
      margin-bottom: 0.8rem;
      display: flex;
      align-items: flex-start;
      gap: 0.6rem;
    }
.about-value-list i {
      color: var(--primary);
      margin-top: 0.2rem;
      flex-shrink: 0;
    }
/* 导航高亮当前页 */
    .nav-link.active-about {
      color: var(--primary) !important;
      font-weight: 700;
    }

/* --- 子页面追加 --- */
/* 隐私政策页面专属样式 */
        .privacy-hero {
            padding: 80px 0 60px;
            background: linear-gradient(135deg, rgba(234, 179, 8, 0.08) 0%, transparent 100%);
            border-bottom: 1px solid rgba(234, 179, 8, 0.15);
        }
.privacy-hero .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
        }
.privacy-hero .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(250, 250, 250, 0.75);
            max-width: 760px;
            margin: 0 auto;
        }
.privacy-content {
            padding: 60px 0 80px;
        }
.privacy-section {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(234, 179, 8, 0.12);
            border-radius: var(--radius-md);
            padding: 40px;
            margin-bottom: 30px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
.privacy-section:hover {
            border-color: rgba(234, 179, 8, 0.35);
            box-shadow: var(--shadow-soft);
        }
.privacy-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 14px;
        }
.privacy-section h2 i {
            font-size: 1.3rem;
            opacity: 0.9;
        }
.privacy-section p {
            color: rgba(250, 250, 250, 0.8);
            line-height: 1.85;
            font-size: 0.95rem;
            margin-bottom: 16px;
        }
.privacy-section ul {
            margin: 16px 0 16px 20px;
            color: rgba(250, 250, 250, 0.8);
            line-height: 1.85;
            font-size: 0.95rem;
        }
.privacy-section ul li {
            margin-bottom: 10px;
            padding-left: 8px;
        }
.privacy-section ul li::marker {
            color: var(--primary);
        }
.privacy-highlight {
            background: rgba(234, 179, 8, 0.06);
            border-left: 3px solid var(--primary);
            padding: 16px 20px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 20px 0;
        }
.privacy-highlight p {
            margin-bottom: 0;
            font-style: italic;
        }
.privacy-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 20px;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(234, 179, 8, 0.15);
        }
.privacy-meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(250, 250, 250, 0.7);
        }
.privacy-meta-item i {
            color: var(--primary);
            font-size: 0.9rem;
        }
.contact-block {
            background: rgba(234, 179, 8, 0.05);
            border: 1px solid rgba(234, 179, 8, 0.2);
            border-radius: var(--radius-md);
            padding: 30px;
            margin-top: 30px;
        }
.contact-block h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 16px;
        }
.contact-block p {
            color: rgba(250, 250, 250, 0.8);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 0;
        }
.contact-block .contact-email {
            color: var(--primary);
            font-weight: 500;
        }
.privacy-hero {
                padding: 60px 0 40px;
            }
.privacy-hero .hero-title {
                font-size: 2rem;
            }
.privacy-section {
                padding: 30px 24px;
            }
.privacy-section h2 {
                font-size: 1.25rem;
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

/* --- 子页面追加 --- */
/* 排行榜专属样式 */
        .rank-hero {
            background: linear-gradient(135deg, rgba(234, 179, 8, 0.15) 0%, rgba(24, 24, 27, 0.95) 100%);
            padding: 80px 0 60px;
            border-bottom: 1px solid rgba(234, 179, 8, 0.15);
        }
.rank-tabs {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }
.rank-tab {
            padding: 10px 24px;
            border-radius: 50px;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            color: var(--text);
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
            text-decoration: none;
        }
.rank-tab:hover, .rank-tab.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #18181b;
        }
.rank-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
.rank-item {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-md);
            padding: 20px;
            display: flex;
            gap: 20px;
            align-items: center;
            transition: all 0.3s ease;
        }
.rank-item:hover {
            background: rgba(234, 179, 8, 0.08);
            border-color: rgba(234, 179, 8, 0.3);
            transform: translateY(-2px);
        }
.rank-number {
            font-size: 32px;
            font-weight: 900;
            color: var(--primary);
            min-width: 60px;
            text-align: center;
            font-style: italic;
        }
.rank-item:nth-child(-n+3) .rank-number {
            color: var(--accent);
            font-size: 40px;
        }
.rank-cover {
            width: 80px;
            height: 110px;
            border-radius: 12px;
            object-fit: cover;
            background: rgba(255,255,255,0.1);
            flex-shrink: 0;
        }
.rank-info {
            flex: 1;
        }
.rank-info h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }
.rank-meta {
            font-size: 14px;
            color: rgba(250,250,250,0.6);
            margin-bottom: 8px;
        }
.rank-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
.rank-tag {
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 12px;
            background: rgba(234, 179, 8, 0.15);
            color: var(--primary);
            border: 1px solid rgba(234, 179, 8, 0.2);
        }
.rank-score {
            font-size: 24px;
            font-weight: 800;
            color: var(--accent);
            margin-top: 8px;
        }
.rank-trend {
            font-size: 14px;
            color: #22c55e;
            margin-left: 8px;
        }
.rank-trend.down {
            color: #ef4444;
        }
.rank-actions {
            display: flex;
            gap: 10px;
            flex-direction: column;
            align-items: flex-end;
            min-width: 100px;
        }
.rank-btn {
            padding: 8px 20px;
            border-radius: 8px;
            background: var(--primary);
            color: #18181b;
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s ease;
            text-align: center;
        }
.rank-btn:hover {
            background: var(--accent);
            color: #18181b;
            transform: translateY(-2px);
        }
.rank-btn-outline {
            background: transparent;
            border: 1px solid rgba(255,255,255,0.2);
            color: var(--text);
        }
.rank-btn-outline:hover {
            background: rgba(255,255,255,0.1);
            border-color: var(--primary);
            color: var(--primary);
        }
.rank-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 16px;
            margin: 40px 0;
        }
.rank-stat-card {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            transition: all 0.3s ease;
        }
.rank-stat-card:hover {
            background: rgba(234, 179, 8, 0.08);
            border-color: rgba(234, 179, 8, 0.3);
        }
.rank-stat-number {
            font-size: 36px;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 8px;
        }
.rank-stat-label {
            font-size: 14px;
            color: rgba(250,250,250,0.6);
        }
.rank-note {
            background: rgba(234, 179, 8, 0.08);
            border: 1px solid rgba(234, 179, 8, 0.2);
            border-radius: var(--radius-md);
            padding: 20px;
            margin-top: 40px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }
.rank-note i {
            color: var(--primary);
            font-size: 24px;
            margin-top: 2px;
        }
.rank-note p {
            color: rgba(250,250,250,0.8);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }
.rank-item {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
.rank-actions {
                flex-direction: row;
                align-items: center;
                justify-content: center;
                width: 100%;
            }
.rank-number {
                font-size: 24px;
            }
.rank-cover {
                width: 100px;
                height: 140px;
            }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.accordion-header { background:transparent !important; }