:root {
  --primary: #0891b2;
  --accent: #0ea5e9;
  --bg: #ecfeff;
  --text: #083344;
  --card-bg: #ffffff;
  --border-light: #e0f2fe;
  --shadow-sm: 0 2px 8px rgba(8, 145, 178, 0.06);
  --shadow-md: 0 8px 24px rgba(8, 145, 178, 0.12);
  --shadow-lg: 0 16px 40px rgba(8, 145, 178, 0.18);
  --radius: 8px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

/* 滚动进度条 */
#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 9999;
  transition: width 0.08s ease-out;
  border-radius: 0 2px 2px 0;
}

/* 点阵背景装饰 */
.dot-pattern {
  position: relative;
}

.dot-pattern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(rgba(8, 145, 178, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  z-index: 0;
}

/* 细网格线 */
.grid-lines {
  background-image: 
    linear-gradient(rgba(8, 145, 178, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(8, 145, 178, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* 导航栏 */
.navbar {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  padding: 0.8rem 0;
  z-index: 1000;
}

.navbar-brand {
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-brand i {
  color: var(--primary);
  font-size: 1.6rem;
}

.navbar-brand:hover {
  color: var(--primary);
}

.navbar-nav .nav-link {
  font-weight: 500;
  color: var(--text);
  padding: 0.5rem 1rem;
  transition: color 0.2s;
  position: relative;
}

.navbar-nav .nav-link:hover {
  color: var(--primary);
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform 0.25s;
}

.navbar-nav .nav-link:hover::after {
  transform: scaleX(1);
}

.navbar-toggler {
  border: none;
  font-size: 1.2rem;
}

.navbar-toggler:focus {
  box-shadow: none;
}

/* Hero 区 */
.hero-section {
  padding: 6rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero-title {
  font-size: clamp(2.8rem, 5vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 1.2rem;
  color: var(--text);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: rgba(8, 51, 68, 0.7);
  max-width: 600px;
  margin-bottom: 2rem;
  font-weight: 400;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 2.5rem;
  animation: fadeInUp 0.6s ease-out both;
}

.tag-cloud span {
  background: #fff;
  border: 1px solid var(--border-light);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  cursor: default;
  transition: all 0.25s;
}

.tag-cloud span:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.hero-visual {
  position: relative;
  z-index: 1;
}

.hero-visual img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
}

/* 区块通用 */
.section-padding {
  padding: 5rem 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--primary);
  border-radius: 3px;
}

.section-desc {
  color: rgba(8, 51, 68, 0.65);
  font-size: 1rem;
  margin-bottom: 2.5rem;
}

/* 特色卡片 */
.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 2rem 1.8rem;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.feature-card i {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 1.2rem;
  display: inline-block;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

.feature-card p {
  font-size: 0.92rem;
  color: rgba(8, 51, 68, 0.7);
  line-height: 1.7;
  margin: 0;
}

/* 长文区块 */
.long-article {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 3rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 1;
}

.article-list {
  counter-reset: article-counter;
  list-style: none;
  padding: 0;
  margin: 0;
}

.article-list li {
  counter-increment: article-counter;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  transition: padding-left 0.3s;
}

.article-list li:last-child {
  border-bottom: none;
}

.article-list li:hover {
  padding-left: 0.8rem;
}

.article-list li::before {
  content: counter(article-counter, decimal-leading-zero);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--primary);
  background: rgba(8, 145, 178, 0.08);
  border-radius: 8px;
  padding: 0.3rem 0.8rem;
  min-width: 2.8rem;
  text-align: center;
  flex-shrink: 0;
}

.article-list h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.article-list p {
  font-size: 0.92rem;
  color: rgba(8, 51, 68, 0.65);
  margin: 0;
}

/* 对比表格 */
.comparison-table {
  width: 100%;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  border-collapse: separate;
  border-spacing: 0;
}

.comparison-table th {
  background: rgba(8, 145, 178, 0.08);
  font-weight: 700;
  padding: 1.2rem 1.5rem;
  font-size: 0.95rem;
  text-align: left;
  color: var(--text);
}

.comparison-table td {
  padding: 1.2rem 1.5rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.92rem;
  vertical-align: middle;
}

.comparison-table tr:hover td {
  background: rgba(8, 145, 178, 0.02);
}

.comparison-table .badge-primary {
  background: var(--primary);
  color: #fff;
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

.comparison-table .badge-accent {
  background: var(--accent);
  color: #fff;
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* FAQ */
.faq-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s;
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
}

.faq-item summary {
  padding: 1.4rem 1.8rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--primary);
  transition: transform 0.3s;
  line-height: 1;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding: 0 1.8rem 1.4rem;
  color: rgba(8, 51, 68, 0.75);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* CTA */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
  border-radius: 16px;
  padding: 4rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.cta-section p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
}

.btn-cta {
  background: #fff;
  color: var(--primary);
  border: none;
  padding: 0.8rem 2.5rem;
  font-weight: 700;
  border-radius: 50px;
  font-size: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
  z-index: 1;
  display: inline-block;
  text-decoration: none;
}

.btn-cta:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  color: var(--primary);
}

/* 友情链接 */
.friend-links {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 2.5rem;
  margin: 3rem 0;
  text-align: center;
}

.friend-links h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
  color: var(--text);
}

.friend-links .links-wrap {
  font-size: 0.95rem;
  color: rgba(8, 51, 68, 0.7);
}

/* 页脚 */
.footer {
  background: #fff;
  border-top: 1px solid var(--border-light);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}

.footer-brand {
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-brand i {
  color: var(--primary);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-links a {
  color: rgba(8, 51, 68, 0.7);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--primary);
}

.copyright {
  font-size: 0.88rem;
  color: rgba(8, 51, 68, 0.5);
  margin-top: 2rem;
  text-align: center;
  border-top: 1px solid var(--border-light);
  padding-top: 2rem;
}

/* 滚动动效 */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 响应式 */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .long-article {
    padding: 2rem 1.5rem;
  }
  
  .cta-section {
    padding: 3rem 2rem;
  }
}

@media (max-width: 768px) {
  .hero-section {
    padding: 4rem 0 3rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .section-padding {
    padding: 3.5rem 0;
  }
  
  .section-title {
    font-size: 1.6rem;
  }
  
  .comparison-table {
    display: block;
    overflow-x: auto;
  }
  
  .long-article {
    padding: 1.5rem;
  }
  
  .navbar-collapse {
    background: #fff;
    padding: 1rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    margin-top: 0.5rem;
  }
}

/* --- 子页面追加 --- */
/* 本页专属补充样式 */
        .about-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(8, 145, 178, 0.08) 0%, rgba(14, 165, 233, 0.05) 50%, rgba(236, 254, 255, 0.1) 100%);
            padding: 80px 0 60px;
            overflow: hidden;
        }
.about-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(8, 145, 178, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
.about-hero-content {
            position: relative;
            z-index: 1;
        }
.about-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(8, 145, 178, 0.1);
            border: 1px solid rgba(8, 145, 178, 0.2);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
        }
.about-meta-card {
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 30px;
            box-shadow: var(--shadow-md);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
.about-meta-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
.about-meta-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: white;
            font-size: 1.5rem;
        }
.about-meta-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }
.about-meta-card p {
            color: #0e4a5c;
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
.about-text-block {
            margin-bottom: 40px;
        }
.about-text-block:last-child {
            margin-bottom: 0;
        }
.about-text-block h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 20px;
            position: relative;
            padding-left: 20px;
        }
.about-text-block h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            width: 4px;
            height: 24px;
            background: var(--primary);
            border-radius: 2px;
        }
.about-text-block p {
            color: #0e4a5c;
            line-height: 1.9;
            margin-bottom: 16px;
            font-size: 1rem;
        }
.about-highlight-box {
            background: rgba(8, 145, 178, 0.06);
            border-left: 4px solid var(--primary);
            padding: 20px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
        }
.about-highlight-box p {
            margin-bottom: 0;
            font-style: italic;
            color: var(--text);
        }
.about-timeline {
            position: relative;
            padding-left: 30px;
            margin: 30px 0;
        }
.about-timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            width: 2px;
            height: 100%;
            background: linear-gradient(to bottom, var(--primary), var(--accent), transparent);
        }
.timeline-item {
            position: relative;
            margin-bottom: 30px;
        }
.timeline-item:last-child {
            margin-bottom: 0;
        }
.timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 6px;
            width: 12px;
            height: 12px;
            background: var(--primary);
            border-radius: 50%;
            border: 2px solid white;
            box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.2);
        }
.timeline-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }
.timeline-item p {
            color: #0e4a5c;
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 0;
        }
.team-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
.team-member {
            text-align: center;
            padding: 20px;
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            transition: transform 0.3s ease;
        }
.team-member:hover {
            transform: translateY(-4px);
        }
.team-avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            color: white;
            font-size: 1.4rem;
            font-weight: 700;
        }
.team-member h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
.team-member p {
            font-size: 0.85rem;
            color: #0e4a5c;
            margin-bottom: 0;
        }
.about-footer-quote {
            text-align: center;
            padding: 40px 20px;
            margin-top: 40px;
            background: linear-gradient(135deg, rgba(8, 145, 178, 0.06), rgba(14, 165, 233, 0.03));
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
        }
.about-footer-quote i {
            font-size: 2rem;
            color: var(--primary);
            opacity: 0.3;
            margin-bottom: 16px;
            display: block;
        }
.about-footer-quote p {
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.8;
        }

/* --- 子页面追加 --- */
/* 本页专属样式 */
        .disclaimer-hero {
            background: linear-gradient(135deg, var(--bg) 0%, #dff5fb 100%);
            border-bottom: 1px solid var(--border-light);
        }
.disclaimer-content {
            max-width: 900px;
            margin: 0 auto;
        }
.legal-section {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 2rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
.legal-section h2 {
            color: var(--primary);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
.legal-section h2 i {
            color: var(--accent);
        }
.legal-section p, .legal-section li {
            color: var(--text);
            line-height: 1.8;
            font-size: 0.95rem;
        }
.legal-section ul {
            padding-left: 1.2rem;
            margin-bottom: 1rem;
        }
.legal-section ul li {
            margin-bottom: 0.6rem;
        }
.highlight-box {
            background: var(--bg);
            border-left: 4px solid var(--primary);
            padding: 1.2rem 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 1.5rem 0;
        }
.highlight-box p {
            margin: 0;
            font-weight: 500;
        }
.last-updated {
            color: var(--text);
            opacity: 0.6;
            font-size: 0.85rem;
            text-align: center;
            margin-bottom: 2rem;
        }
.legal-section {
                padding: 1.5rem;
            }
.legal-section h2 {
                font-size: 1.25rem;
            }

/* --- 子页面追加 --- */
/* 本页专属少量样式 */
    .privacy-hero {
      background: linear-gradient(135deg, #ecfeff 0%, #cffafe 50%, #e0f2fe 100%);
      position: relative;
      padding: 4.5rem 0 3.5rem;
      border-bottom: 1px solid var(--border-light);
    }
.privacy-hero::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background-image: radial-gradient(circle, rgba(8,145,178,0.06) 1px, transparent 1px);
      background-size: 24px 24px;
      pointer-events: none;
    }
.privacy-content {
      max-width: 860px;
      margin: 0 auto;
    }
.privacy-section {
      background: var(--card-bg);
      border: 1px solid var(--border-light);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      padding: 2rem 2.25rem;
      margin-bottom: 1.75rem;
      transition: box-shadow 0.25s ease;
    }
.privacy-section:hover {
      box-shadow: var(--shadow-md);
    }
.privacy-section h2 {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 1.1rem;
      display: flex;
      align-items: center;
      gap: 0.65rem;
    }
.privacy-section h2 i {
      font-size: 1.1rem;
      color: var(--accent);
      width: 28px;
      height: 28px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(14,165,233,0.1);
      border-radius: 6px;
    }
.privacy-section p {
      color: var(--text);
      line-height: 1.8;
      margin-bottom: 1rem;
      font-size: 0.95rem;
    }
.privacy-section ul {
      padding-left: 1.25rem;
      color: var(--text);
      line-height: 1.9;
      margin-bottom: 1rem;
      font-size: 0.95rem;
    }
.privacy-section ul li {
      margin-bottom: 0.4rem;
      position: relative;
    }
.privacy-section ul li::marker {
      color: var(--primary);
    }
.privacy-section strong {
      color: var(--primary);
      font-weight: 600;
    }
.privacy-badge {
      display: inline-block;
      background: rgba(8,145,178,0.08);
      color: var(--primary);
      font-size: 0.78rem;
      font-weight: 600;
      padding: 0.25rem 0.75rem;
      border-radius: 20px;
      border: 1px solid rgba(8,145,178,0.15);
      margin-bottom: 1.5rem;
    }
.contact-inline a {
      color: var(--primary);
      font-weight: 500;
      text-decoration: underline;
      text-underline-offset: 3px;
    }
.contact-inline a:hover {
      color: var(--accent);
    }
.privacy-section {
        padding: 1.5rem 1.25rem;
      }
.privacy-hero {
        padding: 3rem 0 2.5rem;
      }

/* --- 子页面追加 --- */
/* 排行榜页面专属样式 */
        .rank-hero {
            background: linear-gradient(135deg, var(--bg) 0%, #f0f9ff 50%, #e0f2fe 100%);
            padding: 4rem 0 3rem;
            position: relative;
        }
.rank-badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 0.35rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 1rem;
        }
.rank-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            overflow: hidden;
            margin-bottom: 1.5rem;
        }
.rank-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
.rank-card-header {
            display: flex;
            align-items: center;
            padding: 1.25rem 1.5rem;
            border-bottom: 1px solid var(--border-light);
            background: linear-gradient(90deg, rgba(8,145,178,0.03) 0%, transparent 100%);
        }
.rank-num {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.15rem;
            color: #fff;
            background: var(--primary);
            margin-right: 1rem;
            flex-shrink: 0;
        }
.rank-num.top1 {
            background: linear-gradient(135deg, #f59e0b, #f97316);
        }
.rank-num.top2 {
            background: linear-gradient(135deg, #94a3b8, #64748b);
        }
.rank-num.top3 {
            background: linear-gradient(135deg, #d97706, #b45309);
        }
.rank-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin: 0;
        }
.rank-meta {
            font-size: 0.85rem;
            color: rgba(8, 51, 68, 0.6);
            margin-top: 0.2rem;
        }
.rank-card-body {
            padding: 1.25rem 1.5rem;
        }
.rank-desc {
            color: var(--text);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 1rem;
        }
.rank-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
.rank-tag {
            background: var(--bg);
            color: var(--primary);
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
        }
.rank-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 1.5rem;
            border-top: 1px solid var(--border-light);
            background: rgba(8,145,178,0.02);
        }
.rank-stats {
            display: flex;
            gap: 1rem;
            font-size: 0.85rem;
            color: rgba(8, 51, 68, 0.6);
        }
.rank-stats i {
            color: var(--primary);
            margin-right: 0.25rem;
        }
.rank-more {
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 500;
            text-decoration: none;
        }
.rank-more:hover {
            color: var(--accent);
        }
.tabs-section {
            padding: 2rem 0;
        }
.tab-item {
            cursor: pointer;
            padding: 0.5rem 1.25rem;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--text);
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            transition: all 0.2s ease;
            margin-right: 0.5rem;
            display: inline-block;
        }
.tab-item:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
.tab-item.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
.chart-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            padding: 2rem;
            margin-bottom: 2rem;
        }
.chart-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
.chart-title i {
            color: var(--primary);
        }
.trend-card {
            display: flex;
            align-items: flex-start;
            padding: 1rem;
            border-radius: var(--radius);
            background: var(--bg);
            border: 1px solid var(--border-light);
            margin-bottom: 1rem;
            transition: all 0.2s ease;
        }
.trend-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
.trend-cover {
            width: 60px;
            height: 80px;
            border-radius: 6px;
            overflow: hidden;
            flex-shrink: 0;
            margin-right: 1rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.5rem;
        }
.trend-info {
            flex: 1;
        }
.trend-name {
            font-weight: 600;
            color: var(--text);
            font-size: 0.95rem;
            margin-bottom: 0.25rem;
        }
.trend-desc {
            font-size: 0.85rem;
            color: rgba(8, 51, 68, 0.6);
            line-height: 1.5;
        }
.trend-badge {
            display: inline-block;
            background: rgba(14, 165, 233, 0.15);
            color: var(--accent);
            padding: 0.2rem 0.6rem;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-top: 0.4rem;
        }

/* --- 子页面追加 --- */
/* 确保所有卡片、表单、列表与本站配色一致 (覆盖bootstrap默认白底) */
    .card, .card-body, .card-header, .card-footer,
    .form-control, .form-select, .accordion-item, .accordion-button,
    .list-group-item, .modal-content, .dropdown-menu {
      background: var(--card-bg);
      color: var(--text);
      border-color: var(--border-light);
    }
.card-title, .card-text, .accordion-button, .form-label, .list-group-item {
      color: var(--text);
    }
.form-control::placeholder, .form-select::placeholder {
      color: rgba(8, 51, 68, 0.5);
    }
.accordion-button:not(.collapsed) {
      background: var(--primary);
      color: #ffffff;
    }
.accordion-button:focus {
      box-shadow: 0 0 0 0.2rem rgba(8, 145, 178, 0.15);
    }
/* 自定义的guide卡片, 基于既有变量 */
    .guide-step {
      background: var(--card-bg);
      border: 1px solid var(--border-light);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      padding: 1.75rem 1.5rem;
      height: 100%;
      transition: transform 0.2s ease, box-shadow 0.2s;
    }
.guide-step:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
.guide-step .step-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      width: 2.5rem;
      height: 2.5rem;
      border-radius: 50%;
      margin-bottom: 1rem;
    }
.guide-tip {
      background: rgba(8, 145, 178, 0.06);
      border-left: 4px solid var(--primary);
      padding: 1rem 1.25rem;
      border-radius: 0 var(--radius) var(--radius) 0;
      font-size: 0.95rem;
      margin: 1.5rem 0;
    }
.table-guide {
      background: var(--card-bg);
      color: var(--text);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
.table-guide th {
      background: rgba(8, 145, 178, 0.1);
      color: var(--text);
      font-weight: 600;
      border-bottom: 2px solid var(--border-light);
    }
.table-guide td, .table-guide th {
      padding: 0.9rem 1rem;
      border-color: var(--border-light);
    }
.table-guide tr:last-child td {
      border-bottom: none;
    }
/* 高亮当前导航 (与首页active样式保持一致) */
    .navbar .nav-link.active {
      color: var(--primary);
      font-weight: 600;
    }

/* --- 子页面追加 --- */
/* 本页专属样式 */
        .contact-hero {
            background: linear-gradient(135deg, var(--bg) 0%, #dff9ff 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0 60px;
        }
.contact-info-card {
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 32px;
            height: 100%;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }
.contact-info-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
.contact-info-card i {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
.contact-info-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
.contact-info-card p {
            color: #475569;
            font-size: 0.95rem;
            margin-bottom: 4px;
        }
.contact-form-wrapper {
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow-md);
        }
.form-label {
            font-weight: 600;
            color: var(--text);
            font-size: 0.95rem;
        }
.form-control {
            background: var(--bg);
            border: 1px solid var(--border-light);
            color: var(--text);
            border-radius: var(--radius);
            padding: 12px 16px;
            font-size: 0.95rem;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
.form-control:focus {
            background: #ffffff;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
            color: var(--text);
        }
.form-control::placeholder {
            color: #94a3b8;
        }
.contact-submit-btn {
            background: var(--primary);
            color: #ffffff;
            border: none;
            border-radius: var(--radius);
            padding: 14px 36px;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }
.contact-submit-btn:hover {
            background: #0a7a99;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
.contact-submit-btn i {
            margin-right: 8px;
        }
.social-media-links {
            display: flex;
            gap: 16px;
            margin-top: 20px;
        }
.social-media-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--bg);
            color: var(--primary);
            font-size: 1.2rem;
            transition: all 0.3s ease;
            border: 1px solid var(--border-light);
        }
.social-media-links a:hover {
            background: var(--primary);
            color: #ffffff;
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
.faq-mini-item {
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: box-shadow 0.3s;
        }
.faq-mini-item:hover {
            box-shadow: var(--shadow-sm);
        }
.faq-mini-item h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }
.faq-mini-item p {
            font-size: 0.9rem;
            color: #475569;
            margin-bottom: 0;
        }
.response-time-badge {
            display: inline-block;
            background: rgba(8, 145, 178, 0.1);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 16px;
        }
.contact-hero {
                padding: 60px 0 40px;
            }
.contact-form-wrapper {
                padding: 24px;
            }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#083344 !important; border-color:rgba(0,0,0,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#083344 !important; }
.accordion-body { background:transparent !important; color:#083344 !important; }
.accordion-header { background:transparent !important; }