:root {
  --primary: #059669;
  --accent: #14b8a6;
  --bg: #f0fdfa;
  --text: #134e4a;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --shadow-soft: 0 8px 30px rgba(5, 150, 105, 0.08), 0 2px 8px rgba(20, 184, 166, 0.04);
  --shadow-hover: 0 16px 40px rgba(5, 150, 105, 0.15), 0 4px 12px rgba(20, 184, 166, 0.08);
  --font-title: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-title);
  font-weight: 800;
  letter-spacing: -0.01em;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.25s ease;
}

a:hover {
  color: var(--accent);
}

/* 几何色块背景装饰 */
.geo-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.geo-bg .shape {
  position: absolute;
  opacity: 0.15;
}

.geo-bg .shape-circle {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: var(--accent);
  top: -80px;
  right: -100px;
}

.geo-bg .shape-square {
  width: 180px;
  height: 180px;
  background: var(--primary);
  bottom: 10%;
  left: -60px;
  border-radius: 30px;
  transform: rotate(25deg);
}

.geo-bg .shape-triangle {
  width: 0;
  height: 0;
  border-left: 120px solid transparent;
  border-right: 120px solid transparent;
  border-bottom: 200px solid var(--primary);
  top: 40%;
  left: 80%;
  transform: rotate(-15deg);
}

.geo-bg .shape-dot {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--accent);
  top: 25%;
  left: 15%;
}

/* 布局骨架 */
.app-shell {
  display: flex;
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

/* 左侧固定侧栏 */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid rgba(5, 150, 105, 0.08);
  padding: 32px 24px;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  z-index: 10;
}

.sidebar-logo {
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  margin-bottom: 32px;
  transition: background 0.3s;
}

.sidebar-logo:hover {
  background: rgba(5, 150, 105, 0.05);
}

.sidebar-logo i {
  color: var(--primary);
  font-size: 1.8rem;
}

.sidebar-nav {
  flex: 1;
}

.sidebar-nav .nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  font-weight: 600;
  color: var(--text);
  transition: all 0.25s;
}

.sidebar-nav .nav-item i {
  width: 22px;
  text-align: center;
  color: var(--primary);
  font-size: 1.1rem;
}

.sidebar-nav .nav-item:hover {
  background: rgba(5, 150, 105, 0.08);
  color: var(--primary);
  transform: translateX(4px);
}

.sidebar-nav .nav-item.active {
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.15), rgba(20, 184, 166, 0.15));
  color: var(--primary);
}

.sidebar-sub {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px dashed rgba(5, 150, 105, 0.2);
}

.sidebar-sub h6 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.6;
  margin-bottom: 14px;
  font-weight: 700;
}

.sidebar-sub a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 10px;
  font-size: 0.9rem;
  color: var(--text);
  opacity: 0.8;
  transition: all 0.2s;
}

.sidebar-sub a:hover {
  opacity: 1;
  background: rgba(5, 150, 105, 0.06);
  color: var(--primary);
}

/* 右侧主内容区 */
.main-content {
  flex: 1;
  padding: 0 40px 60px;
  max-width: 1400px;
}

/* Hero */
.hero-section {
  padding: 60px 0 40px;
  position: relative;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.hero-tags .tag {
  background: white;
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  box-shadow: 0 2px 10px rgba(5, 150, 105, 0.06);
  border: 1px solid rgba(5, 150, 105, 0.1);
  animation: floatTag 6s ease-in-out infinite;
  cursor: default;
  transition: all 0.3s;
}

.hero-tags .tag:nth-child(2) { animation-delay: 0.8s; }
.hero-tags .tag:nth-child(3) { animation-delay: 1.6s; }
.hero-tags .tag:nth-child(4) { animation-delay: 2.4s; }
.hero-tags .tag:nth-child(5) { animation-delay: 3.2s; }
.hero-tags .tag:nth-child(6) { animation-delay: 4.0s; }

.hero-tags .tag:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px rgba(5, 150, 105, 0.15);
}

@keyframes floatTag {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  opacity: 0.8;
  max-width: 600px;
  margin-bottom: 32px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-custom {
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.35s;
}

.btn-primary-custom {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  box-shadow: 0 4px 20px rgba(5, 150, 105, 0.3);
}

.btn-primary-custom::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shine 3s ease-in-out infinite;
}

@keyframes shine {
  0% { left: -100%; }
  50% { left: 100%; }
  100% { left: 100%; }
}

.btn-primary-custom:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(5, 150, 105, 0.4);
}

.btn-outline-custom {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline-custom:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}

/* 数据统计 */
.stats-section {
  padding: 40px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-soft);
  transition: all 0.35s;
  border: 1px solid rgba(5, 150, 105, 0.05);
}

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

.stat-number {
  font-size: 2.8rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.75;
  font-weight: 500;
  margin-top: 8px;
}

/* 使用说明 */
.howto-section {
  padding: 40px 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 60%;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.accordion-custom .accordion-item {
  background: white;
  border: none;
  border-radius: var(--radius-md) !important;
  margin-bottom: 14px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: box-shadow 0.3s;
}

.accordion-custom .accordion-item:hover {
  box-shadow: var(--shadow-hover);
}

.accordion-custom .accordion-button {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  background: white;
  box-shadow: none;
  border: none;
  border-radius: var(--radius-md) !important;
}

.accordion-custom .accordion-button:not(.collapsed) {
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.05), rgba(20, 184, 166, 0.05));
  color: var(--primary);
}

.accordion-custom .accordion-button:focus {
  box-shadow: none;
  border: none;
}

.accordion-custom .accordion-body {
  padding: 0 24px 20px;
  font-size: 0.95rem;
  opacity: 0.85;
}

/* 特色 */
.features-section {
  padding: 40px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-soft);
  transition: all 0.35s;
  border: 1px solid rgba(5, 150, 105, 0.04);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.3s;
}

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

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  margin-bottom: 20px;
  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.2);
}

.feature-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.9rem;
  opacity: 0.8;
  line-height: 1.7;
}

/* FAQ */
.faq-section {
  padding: 40px 0;
}

.faq-list {
  max-width: 900px;
}

.faq-item {
  background: white;
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-soft);
  border-left: 4px solid var(--primary);
  transition: all 0.3s;
}

.faq-item:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-hover);
}

.faq-q {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.faq-q i {
  color: var(--primary);
}

.faq-a {
  font-size: 0.92rem;
  opacity: 0.85;
  padding-left: 28px;
  position: relative;
}

.faq-a::before {
  content: '→';
  position: absolute;
  left: 8px;
  color: var(--accent);
  font-weight: 700;
}

/* CTA */
.cta-section {
  padding: 60px 0;
}

.cta-box {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 32px;
  padding: 48px 40px;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
}

.cta-box::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
}

.cta-title {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-desc {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 500px;
  margin: 0 auto 30px;
  position: relative;
  z-index: 1;
}

.cta-btn {
  background: white;
  color: var(--primary);
  padding: 14px 40px;
  border-radius: 50px;
  font-weight: 800;
  font-size: 1.1rem;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 1;
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.cta-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}

/* 友情链接 */
.friend-links {
  padding: 30px 0;
  margin-top: 20px;
  border-top: 1px dashed rgba(5, 150, 105, 0.15);
}

.friend-links h5 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 14px;
  opacity: 0.7;
  display: flex;
  align-items: center;
  gap: 8px;
}

.friend-links h5 i {
  color: var(--primary);
}

.friend-links .link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.9rem;
}

/* 页脚 */
.footer {
  padding: 40px 0 20px;
  border-top: 1px solid rgba(5, 150, 105, 0.1);
  margin-top: 40px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  font-size: 1.4rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-copy {
  opacity: 0.7;
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 20px;
  font-size: 0.9rem;
}

.footer-links a {
  opacity: 0.8;
}

.footer-links a:hover {
  opacity: 1;
}

/* 回到顶部 */
.back-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  border: none;
  box-shadow: 0 4px 20px rgba(5, 150, 105, 0.3);
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s;
  z-index: 1000;
}

.back-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(5, 150, 105, 0.4);
}

/* 瀑布流卡片 */
.waterfall-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.waterfall-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: all 0.35s;
  border: 1px solid rgba(5, 150, 105, 0.04);
}

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

.waterfall-card .card-img {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, #a7f3d0, #99f6e4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: white;
  position: relative;
  overflow: hidden;
}

.waterfall-card .card-img::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(5,150,105,0.2), rgba(20,184,166,0.2));
}

.waterfall-card .card-body {
  padding: 16px 20px;
}

.waterfall-card .card-tag {
  display: inline-block;
  background: rgba(5, 150, 105, 0.1);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.waterfall-card .card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.waterfall-card .card-meta {
  font-size: 0.8rem;
  opacity: 0.7;
}

/* 滚动进入动画 */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* 响应式 */
@media (max-width: 991px) {
  .sidebar {
    width: 100%;
    height: auto;
    position: relative;
    padding: 16px 20px;
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    border-right: none;
    border-bottom: 1px solid rgba(5, 150, 105, 0.08);
  }
  
  .sidebar-logo {
    margin-bottom: 0;
    margin-right: auto;
  }
  
  .sidebar-nav {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
  }
  
  .sidebar-nav .nav-item {
    margin-bottom: 0;
    padding: 8px 14px;
  }
  
  .sidebar-sub {
    display: none;
  }
  
  .main-content {
    padding: 0 20px 40px;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .waterfall-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .waterfall-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .btn-custom {
    text-align: center;
  }
}

/* --- 子页面追加 --- */
/* 排行榜页专用微调 */
    .rank-hero {
      padding: 3rem 0 2.5rem;
      border-bottom: 1px solid rgba(5,150,105,.15);
    }
.rank-badge {
      display: inline-block;
      background: var(--primary);
      color: #fff;
      font-size: .8rem;
      font-weight: 600;
      padding: .25rem .8rem;
      border-radius: 30px;
      letter-spacing: .5px;
      margin-bottom: 1.2rem;
    }
.rank-switch {
      display: flex;
      gap: .75rem;
      flex-wrap: wrap;
      margin: 2rem 0 1.5rem;
    }
.rank-switch a {
      padding: .5rem 1.4rem;
      border-radius: 30px;
      background: rgba(5,150,105,.08);
      color: var(--text);
      font-weight: 500;
      font-size: .95rem;
      border: 1px solid rgba(5,150,105,.2);
      transition: all .2s;
    }
.rank-switch a.active,
    .rank-switch a:hover {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }
.rank-card {
      background: rgba(255,255,255,.5);
      backdrop-filter: blur(4px);
      border: 1px solid rgba(5,150,105,.15);
      border-radius: var(--radius-lg);
      padding: 1.5rem 1.8rem;
      margin-bottom: 1.5rem;
      box-shadow: var(--shadow-soft);
      transition: box-shadow .2s;
    }
.rank-card:hover {
      box-shadow: var(--shadow-hover);
    }
.rank-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
      margin-right: 1.2rem;
      min-width: 3rem;
      text-align: center;
    }
.rank-title {
      font-weight: 700;
      font-size: 1.2rem;
      color: var(--text);
      margin-bottom: .3rem;
    }
.rank-meta {
      color: var(--text);
      opacity: .75;
      font-size: .9rem;
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
    }
.rank-tag {
      background: rgba(20,184,166,.12);
      color: var(--primary);
      border-radius: 20px;
      padding: .2rem .8rem;
      font-size: .8rem;
      font-weight: 500;
    }
.rank-desc {
      color: var(--text);
      opacity: .8;
      font-size: .95rem;
      margin-top: .6rem;
    }
.top-three {
      background: linear-gradient(135deg, rgba(5,150,105,.05), rgba(20,184,166,.05));
      border: 1px solid rgba(5,150,105,.2);
      border-radius: var(--radius-lg);
      padding: .8rem 1rem;
      margin-bottom: 2rem;
    }
.section-title--rank {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--text);
      margin-bottom: .3rem;
    }
.section-sub {
      color: var(--text);
      opacity: .7;
      margin-bottom: 2rem;
    }
.rank-footer-note {
      background: rgba(5,150,105,.06);
      border-radius: var(--radius-md);
      padding: 1rem 1.5rem;
      font-size: .9rem;
      color: var(--text);
      border-left: 4px solid var(--primary);
    }
/* 确保导航高亮当前页 */
    .nav-item.active {
      color: var(--primary);
      font-weight: 600;
    }

/* --- 子页面追加 --- */
/* 本页专属补充样式 */
    .about-hero {
      padding: 80px 0 40px;
    }
.about-section {
      padding: 40px 0;
    }
.about-card {
      background: var(--bg);
      border: 1px solid rgba(5, 150, 105, 0.12);
      border-radius: var(--radius-lg);
      padding: 32px;
      height: 100%;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      box-shadow: var(--shadow-soft);
    }
.about-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
.about-card-icon {
      font-size: 2rem;
      color: var(--primary);
      margin-bottom: 16px;
      display: inline-block;
    }
.about-card h3 {
      font-family: var(--font-title);
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 12px;
      line-height: 1.4;
    }
.about-card p {
      font-size: 0.95rem;
      color: var(--text);
      opacity: 0.85;
      line-height: 1.8;
      margin-bottom: 0;
    }
.timeline-wrap {
      position: relative;
      padding-left: 28px;
    }
.timeline-wrap::before {
      content: '';
      position: absolute;
      left: 8px;
      top: 0;
      bottom: 0;
      width: 2px;
      background: linear-gradient(to bottom, var(--primary), var(--accent));
      border-radius: 2px;
    }
.timeline-item {
      position: relative;
      margin-bottom: 28px;
    }
.timeline-item::before {
      content: '';
      position: absolute;
      left: -26px;
      top: 6px;
      width: 12px;
      height: 12px;
      background: var(--primary);
      border-radius: 50%;
      border: 2px solid var(--bg);
      box-shadow: 0 0 0 2px var(--primary);
    }
.timeline-item h4 {
      font-family: var(--font-title);
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 6px;
    }
.timeline-item p {
      font-size: 0.92rem;
      color: var(--text);
      opacity: 0.8;
      line-height: 1.7;
      margin-bottom: 0;
    }
.value-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
.value-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 12px 0;
      border-bottom: 1px solid rgba(5, 150, 105, 0.1);
      font-size: 0.95rem;
      color: var(--text);
      line-height: 1.7;
    }
.value-list li:last-child {
      border-bottom: none;
    }
.value-list i {
      color: var(--primary);
      margin-top: 4px;
      flex-shrink: 0;
    }
.nav-item.active-about {
      background: var(--primary);
      color: #fff;
    }

/* --- 子页面追加 --- */
/* 确保Bootstrap组件不破坏配色，但本页尽量不用组件类，只用栅格 */
    .disclaimer-wrap {
      max-width: 900px;
      margin: 0 auto;
      padding: 2rem 1rem;
    }
.disclaimer-title {
      font-size: 2.4rem;
      font-weight: 800;
      letter-spacing: -0.01em;
      margin-bottom: 1.2rem;
      color: var(--text);
    }
.disclaimer-sub {
      font-size: 1.1rem;
      color: var(--text);
      opacity: 0.85;
      border-left: 4px solid var(--primary);
      padding-left: 1rem;
      margin-bottom: 2.5rem;
    }
.disclaimer-section {
      background: rgba(255,255,255,0.6);
      backdrop-filter: blur(4px);
      border-radius: var(--radius-lg);
      padding: 2rem 2.2rem;
      margin-bottom: 2rem;
      box-shadow: var(--shadow-soft);
      border: 1px solid rgba(5,150,105,0.15);
    }
.disclaimer-section h2 {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 1.2rem;
      display: flex;
      align-items: center;
      gap: 0.6rem;
    }
.disclaimer-section h2 i {
      color: var(--accent);
      font-size: 1.6rem;
    }
.disclaimer-section p, .disclaimer-section li {
      font-size: 1rem;
      line-height: 1.8;
      color: var(--text);
      opacity: 0.92;
    }
.disclaimer-section ul {
      padding-left: 1.2rem;
    }
.disclaimer-section li {
      margin-bottom: 0.5rem;
    }
.badge-soft {
      background: rgba(20,184,166,0.12);
      color: var(--text);
      font-weight: 600;
      padding: 0.2rem 0.8rem;
      border-radius: 30px;
      font-size: 0.85rem;
      display: inline-block;
    }
hr.sep {
      border: 0;
      border-top: 2px dashed rgba(5,150,105,0.25);
      margin: 2.5rem 0;
    }
.disclaimer-title { font-size: 1.9rem; }
.disclaimer-section { padding: 1.5rem; }

/* --- 子页面追加 --- */
/* 本页专属样式(少量,自动合并) */
    .guide-hero {
      position: relative;
      overflow: hidden;
    }
.guide-section-card {
      background: rgba(255,255,255,.85);
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      box-shadow: var(--shadow-soft);
      transition: transform .3s ease, box-shadow .3s ease;
      margin-bottom: 2rem;
      border: 1px solid rgba(5,150,105,.08);
    }
.guide-section-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
.guide-step-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 48px;
      height: 48px;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-weight: 800;
      font-size: 1.25rem;
      margin-bottom: 1rem;
      box-shadow: 0 4px 12px rgba(5,150,105,.3);
    }
.guide-tip-box {
      background: rgba(20,184,166,.08);
      border-left: 4px solid var(--accent);
      border-radius: var(--radius-sm);
      padding: 1rem 1.25rem;
      margin-top: 1.25rem;
      font-size: .95rem;
      color: var(--text);
    }
.guide-icon-list {
      list-style: none;
      padding-left: 0;
    }
.guide-icon-list li {
      padding: .5rem 0;
      display: flex;
      align-items: flex-start;
      gap: .75rem;
      color: var(--text);
      font-size: 1rem;
    }
.guide-icon-list li i {
      color: var(--primary);
      margin-top: .2rem;
      flex-shrink: 0;
    }
.guide-table-wrap {
      overflow-x: auto;
      border-radius: var(--radius-md);
      border: 1px solid rgba(5,150,105,.12);
    }
.guide-table {
      width: 100%;
      background: rgba(255,255,255,.85);
      border-collapse: collapse;
    }
.guide-table th {
      background: linear-gradient(135deg, rgba(5,150,105,.1), rgba(20,184,166,.08));
      color: var(--primary);
      font-weight: 700;
      padding: 1rem 1.25rem;
      text-align: left;
      border-bottom: 2px solid rgba(5,150,105,.2);
      font-size: .95rem;
      white-space: nowrap;
    }
.guide-table td {
      padding: .9rem 1.25rem;
      border-bottom: 1px solid rgba(5,150,105,.08);
      color: var(--text);
      font-size: .95rem;
    }
.guide-table tr:last-child td {
      border-bottom: none;
    }
.guide-table tr:hover td {
      background: rgba(20,184,166,.04);
    }
.badge-guide {
      display: inline-block;
      padding: .35em .8em;
      border-radius: 20px;
      font-size: .8rem;
      font-weight: 600;
      background: rgba(5,150,105,.12);
      color: var(--primary);
      border: 1px solid rgba(5,150,105,.2);
    }
.guide-section-card {
        padding: 1.5rem;
      }

/* --- 子页面追加 --- */
/* 本页专属少量样式，程序会自动合并进站点CSS */
    .privacy-section {
      padding: 60px 0;
    }
.privacy-card {
      background: var(--bg);
      border: 1px solid rgba(5, 150, 105, 0.15);
      border-radius: var(--radius-md);
      padding: 28px 30px;
      margin-bottom: 24px;
      box-shadow: var(--shadow-soft);
      transition: box-shadow 0.3s ease;
    }
.privacy-card:hover {
      box-shadow: var(--shadow-hover);
    }
.privacy-card h2 {
      font-family: var(--font-title);
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--primary);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
.privacy-card h2 i {
      color: var(--accent);
      font-size: 1.3rem;
    }
.privacy-card p, .privacy-card li {
      font-family: var(--font-body);
      font-size: 0.95rem;
      line-height: 1.75;
      color: var(--text);
    }
.privacy-card ul {
      padding-left: 20px;
    }
.privacy-card li {
      margin-bottom: 6px;
    }
.privacy-card strong {
      color: var(--primary);
      font-weight: 600;
    }
.last-updated {
      display: inline-block;
      background: rgba(20, 184, 166, 0.1);
      color: var(--primary);
      border-radius: var(--radius-sm);
      padding: 6px 16px;
      font-size: 0.85rem;
      font-weight: 500;
      margin-bottom: 30px;
    }

/* --- 子页面追加 --- */
/* 确保导航高亮 (首页导航中“联系我们”高亮) */
    .nav-item.active-page {
      color: var(--primary) !important;
      font-weight: 700;
      border-bottom: 3px solid var(--primary);
    }
/* 联系卡片定制 —— 完全走本站变量 */
    .contact-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 24px;
      margin: 40px 0;
    }
.contact-item {
      background: var(--bg);
      border-radius: var(--radius-lg);
      padding: 28px 22px;
      box-shadow: var(--shadow-soft);
      transition: transform .2s ease, box-shadow .2s ease;
      border: 1px solid rgba(5,150,105,.12);
      text-align: center;
    }
.contact-item:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
.contact-icon {
      font-size: 2.4rem;
      color: var(--primary);
      margin-bottom: 18px;
    }
.contact-title {
      font-family: var(--font-title);
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--text);
      margin-bottom: 10px;
      letter-spacing: -.01em;
    }
.contact-desc {
      font-size: .95rem;
      color: var(--text);
      opacity: .85;
      line-height: 1.6;
      margin-bottom: 16px;
    }
.contact-link {
      display: inline-block;
      background: var(--primary);
      color: #fff !important;
      padding: 10px 24px;
      border-radius: 50px;
      font-weight: 600;
      font-size: .9rem;
      text-decoration: none;
      box-shadow: 0 4px 12px rgba(5,150,105,.3);
      transition: background .2s, transform .2s;
      border: none;
    }
.contact-link:hover {
      background: #047857;
      transform: translateY(-2px);
      color: #fff;
    }
/* 社区反馈表格区域 (无bootstrap组件类) */
    .feedback-panel {
      background: rgba(255,255,255,.5);
      backdrop-filter: blur(6px);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      box-shadow: var(--shadow-soft);
      margin-top: 40px;
      border: 1px solid rgba(5,150,105,.15);
    }
.form-field {
      margin-bottom: 20px;
    }
.form-field label {
      font-weight: 600;
      color: var(--text);
      margin-bottom: 8px;
      display: block;
      font-size: .95rem;
      letter-spacing: .01em;
    }
.form-field input, .form-field textarea, .form-field select {
      width: 100%;
      padding: 14px 16px;
      border-radius: var(--radius-sm);
      border: 1.5px solid rgba(5,150,105,.25);
      background: rgba(255,255,255,.7);
      color: var(--text);
      font-size: 1rem;
      transition: border .2s, box-shadow .2s;
    }
.form-field input:focus, .form-field textarea:focus, .form-field select:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 4px rgba(5,150,105,.12);
    }
.form-field textarea {
      min-height: 130px;
      resize: vertical;
    }
.submit-btn {
      background: var(--primary);
      color: white;
      font-weight: 700;
      padding: 14px 38px;
      border-radius: 60px;
      border: none;
      font-size: 1.05rem;
      cursor: pointer;
      transition: background .2s, transform .2s;
      box-shadow: 0 8px 20px rgba(5,150,105,.25);
    }
.submit-btn:hover {
      background: #047857;
      transform: translateY(-2px);
    }
.note-sm {
      font-size: .85rem;
      color: var(--text);
      opacity: .7;
      margin-top: 14px;
    }
.social-row {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
      justify-content: center;
      margin: 20px 0 10px;
    }
.social-badge {
      background: var(--bg);
      padding: 12px 26px;
      border-radius: 100px;
      box-shadow: var(--shadow-soft);
      color: var(--text);
      font-weight: 600;
      font-size: 1rem;
      display: inline-flex;
      align-items: center;
      gap: 12px;
      border: 1px solid rgba(5,150,105,.15);
    }
.social-badge i {
      color: var(--primary);
      font-size: 1.4rem;
    }

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