:root {
  --main: #4f46e5;
  --accent: #7c3aed;
  --bg: #f5f3ff;
  --text: #1e1b4b;
  --card-bg: #ffffff;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-pill: 999px;
  --shadow-light: 0 4px 20px rgba(79, 70, 229, 0.08);
  --shadow-hover: 0 8px 30px rgba(124, 58, 237, 0.15);
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 15px;
  line-height: 1.7;
  overflow-x: hidden;
}
h1,h2,h3,.brand-font {
  font-family: 'Inter', 'Comic Sans MS', 'Chalkboard SE', 'PingFang SC', sans-serif;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.navbar {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(79,70,229,0.1);
  padding: 12px 0;
  z-index: 1000;
}
.navbar-brand {
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--main) !important;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.03em;
}
.navbar-brand i { color: var(--accent); }
.nav-link {
  font-weight: 600;
  color: var(--text) !important;
  margin: 0 6px;
  padding: 6px 16px !important;
  border-radius: var(--radius-pill);
  transition: all 0.3s;
  font-size: 0.92rem;
}
.nav-link:hover {
  background: rgba(79,70,229,0.1);
  color: var(--main) !important;
}
.navbar-toggler { border:none; }
.navbar-toggler:focus { box-shadow: none; }

/* Hero */
.hero {
  position: relative;
  padding: 100px 0 80px;
  background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 50%, #e0e7ff 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(124,58,237,0.15), transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -60px; left: -60px;
  width: 250px; height: 250px;
  background: radial-gradient(circle, rgba(79,70,229,0.12), transparent 70%);
  border-radius: 50%;
  animation: float 10s ease-in-out infinite reverse;
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}
.hero h1 {
  font-size: 3.2rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--main), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  line-height: 1.2;
}
.hero .lead {
  font-size: 1.1rem;
  color: rgba(30,27,75,0.8);
  max-width: 640px;
  margin: 0 auto;
}
.hero .cta-group { margin-top: 32px; }
.btn-pill {
  border-radius: var(--radius-pill);
  padding: 12px 32px;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  transition: all 0.3s;
}
.btn-primary-custom {
  background: var(--main);
  color: #fff;
  box-shadow: 0 4px 15px rgba(79,70,229,0.3);
}
.btn-primary-custom:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(124,58,237,0.35);
}
.btn-outline-custom {
  background: transparent;
  border: 2px solid var(--main);
  color: var(--main);
}
.btn-outline-custom:hover {
  background: var(--main);
  color: #fff;
  transform: translateY(-2px);
}

/* 时间线/步骤条 */
.timeline-section { padding: 80px 0; }
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--main), var(--accent));
  transform: translateX(-50%);
  border-radius: 3px;
}
.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 40px;
  margin-bottom: 40px;
}
.timeline-item:nth-child(odd) { left: 0; text-align: right; }
.timeline-item:nth-child(even) { left: 50%; text-align: left; }
.timeline-item::before {
  content: attr(data-step);
  position: absolute;
  top: 10px;
  width: 36px;
  height: 36px;
  background: var(--main);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  box-shadow: 0 0 0 5px rgba(79,70,229,0.2);
}
.timeline-item:nth-child(odd)::before { right: -18px; }
.timeline-item:nth-child(even)::before { left: -18px; }
.timeline-content {
  background: var(--card-bg);
  padding: 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-light);
  transition: all 0.3s;
}
.timeline-content:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.timeline-content h4 {
  color: var(--main);
  font-weight: 700;
  margin-bottom: 8px;
}
.timeline-content p { margin: 0; font-size: 0.9rem; }

/* 对比表格 */
.table-section { padding: 80px 0; background: #fff; }
.comparison-table {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-light);
  border: 1px solid rgba(79,70,229,0.1);
}
.comparison-table table { margin: 0; }
.comparison-table th {
  background: var(--main);
  color: #fff;
  font-weight: 700;
  padding: 16px;
  border: none;
  font-size: 1rem;
}
.comparison-table td {
  padding: 14px 16px;
  border-bottom: 1px solid #f0edff;
  font-size: 0.9rem;
  vertical-align: middle;
}
.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table .fa-check { color: #22c55e; }
.comparison-table .fa-times { color: #ef4444; }
.highlight-row { background: rgba(79,70,229,0.05); }

/* FAQ */
.faq-section { padding: 80px 0; }
.accordion-item {
  border: none;
  margin-bottom: 12px;
  border-radius: var(--radius-md) !important;
  overflow: hidden;
  box-shadow: var(--shadow-light);
}
.accordion-button {
  font-weight: 600;
  color: var(--text);
  padding: 18px 24px;
  background: var(--card-bg);
  font-size: 0.95rem;
}
.accordion-button:not(.collapsed) {
  background: rgba(79,70,229,0.05);
  color: var(--main);
}
.accordion-button:focus { box-shadow: none; }
.accordion-body {
  padding: 20px 24px;
  font-size: 0.9rem;
  color: rgba(30,27,75,0.8);
}

/* 特色卡片 */
.feature-section { padding: 80px 0; background: #fff; }
.feature-card {
  background: var(--bg);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-align: center;
  height: 100%;
  transition: all 0.3s;
  border: 1px solid rgba(79,70,229,0.05);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  background: #fff;
}
.feature-card .icon-wrapper {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--main), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.4rem;
}
.feature-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 0.85rem; color: rgba(30,27,75,0.7); margin: 0; }

/* CTA */
.cta-section {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--main), var(--accent));
  color: #fff;
  text-align: center;
}
.cta-section h2 {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-section .btn-light-custom {
  background: #fff;
  color: var(--main);
  border: none;
  padding: 14px 40px;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
  transition: all 0.3s;
}
.cta-section .btn-light-custom:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}

/* 图片懒加载 */
.lazy-image {
  opacity: 0;
  transition: opacity 0.5s ease;
}
.lazy-image.loaded {
  opacity: 1;
}
.lazy-image.lazy-placeholder {
  background: linear-gradient(135deg, #e0e7ff, #ede9fe);
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--main);
  font-weight: 600;
  font-size: 0.9rem;
}

/* 友情链接 */
.friend-links {
  padding: 50px 0;
  background: var(--bg);
  border-top: 1px solid rgba(79,70,229,0.1);
}
.friend-links h5 {
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  font-size: 1rem;
}
.friend-links .link-item {
  display: inline-block;
  margin: 0 16px 8px 0;
  color: rgba(30,27,75,0.7);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.3s;
}
.friend-links .link-item:hover { color: var(--main); }

/* Footer */
.footer {
  background: var(--text);
  color: rgba(255,255,255,0.7);
  padding: 40px 0;
  font-size: 0.85rem;
}
.footer a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: color 0.3s;
}
.footer a:hover { color: #fff; }
.footer .brand-font {
  color: #fff;
  font-size: 1.3rem;
  font-weight: 800;
}

/* 响应式 */
@media (max-width: 768px) {
  .hero { padding: 70px 0 50px; }
  .hero h1 { font-size: 2.2rem; }
  .timeline::before { left: 20px; }
  .timeline-item {
    width: 100%;
    left: 0 !important;
    padding-left: 60px;
    padding-right: 20px;
    text-align: left !important;
  }
  .timeline-item::before {
    left: 2px !important;
    right: auto !important;
  }
  .timeline-content { padding: 16px; }
  .comparison-table { overflow-x: auto; }
  .comparison-table table { min-width: 600px; }
}

/* --- 子页面追加 --- */
/* 页面专属补充样式 */
    .about-hero {
      background: linear-gradient(135deg, var(--bg) 0%, rgba(124, 58, 237, 0.08) 100%);
      padding: 80px 0 60px;
      border-bottom: 1px solid rgba(79, 70, 229, 0.1);
    }
.about-hero h1 {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 1rem;
    }
.about-hero .lead {
      color: rgba(30, 27, 75, 0.75);
      max-width: 720px;
      margin: 0 auto 1.5rem;
      font-size: 1.15rem;
    }
.about-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(79, 70, 229, 0.1);
      color: var(--main);
      padding: 8px 20px;
      border-radius: var(--radius-pill);
      font-weight: 600;
      font-size: 0.9rem;
      margin-bottom: 1.5rem;
    }
.mission-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 32px;
      height: 100%;
      box-shadow: var(--shadow-light);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid rgba(79, 70, 229, 0.08);
    }
.mission-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
.mission-icon {
      width: 52px;
      height: 52px;
      background: linear-gradient(135deg, var(--main), var(--accent));
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.3rem;
      margin-bottom: 1.2rem;
    }
.mission-card h3 {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 0.8rem;
    }
.mission-card p {
      color: rgba(30, 27, 75, 0.7);
      font-size: 0.95rem;
      line-height: 1.7;
      margin-bottom: 0;
    }
.story-section {
      padding: 70px 0;
    }
.story-section .section-tag {
      color: var(--main);
      font-weight: 600;
      letter-spacing: 1px;
      text-transform: uppercase;
      font-size: 0.85rem;
      margin-bottom: 12px;
    }
.story-section h2 {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 1.5rem;
    }
.story-content p {
      color: rgba(30, 27, 75, 0.75);
      line-height: 1.9;
      font-size: 1rem;
      margin-bottom: 1.2rem;
    }
.value-list {
      list-style: none;
      padding: 0;
      margin: 1.5rem 0;
    }
.value-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 10px 0;
      color: rgba(30, 27, 75, 0.8);
      font-size: 0.98rem;
    }
.value-list li i {
      color: var(--main);
      margin-top: 3px;
      flex-shrink: 0;
    }
.stat-card {
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.05), rgba(124, 58, 237, 0.08));
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      height: 100%;
      border: 1px solid rgba(79, 70, 229, 0.1);
    }
.stat-number {
      font-size: 2.4rem;
      font-weight: 800;
      color: var(--main);
      line-height: 1.2;
    }
.stat-label {
      color: rgba(30, 27, 75, 0.65);
      font-size: 0.9rem;
      margin-top: 8px;
    }
.principles-section {
      padding: 70px 0;
      background: rgba(79, 70, 229, 0.03);
    }
.principle-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-light);
      border: 1px solid rgba(79, 70, 229, 0.08);
      margin-bottom: 20px;
      transition: box-shadow 0.3s ease;
    }
.principle-card:hover {
      box-shadow: var(--shadow-hover);
    }
.principle-number {
      font-size: 1rem;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 8px;
    }
.principle-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 10px;
    }
.principle-card p {
      color: rgba(30, 27, 75, 0.7);
      font-size: 0.93rem;
      line-height: 1.7;
      margin-bottom: 0;
    }
.updates-section {
      padding: 70px 0;
    }
.update-item {
      display: flex;
      gap: 20px;
      padding: 20px 0;
      border-bottom: 1px solid rgba(79, 70, 229, 0.08);
    }
.update-item:last-child {
      border-bottom: none;
    }
.update-date {
      flex-shrink: 0;
      background: rgba(79, 70, 229, 0.08);
      color: var(--main);
      font-weight: 600;
      font-size: 0.9rem;
      padding: 6px 16px;
      border-radius: var(--radius-pill);
      height: fit-content;
    }
.update-content h5 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 6px;
    }
.update-content p {
      color: rgba(30, 27, 75, 0.7);
      font-size: 0.92rem;
      line-height: 1.6;
      margin-bottom: 0;
    }
.cta-box {
      background: linear-gradient(135deg, var(--main), var(--accent));
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      text-align: center;
      color: #fff;
      margin: 40px 0 0;
    }
.cta-box h3 {
      font-weight: 700;
      font-size: 1.8rem;
      margin-bottom: 12px;
    }
.cta-box p {
      opacity: 0.9;
      max-width: 600px;
      margin: 0 auto 24px;
      font-size: 1rem;
    }
.btn-white-custom {
      background: #fff;
      color: var(--main);
      border: none;
      padding: 12px 32px;
      border-radius: var(--radius-pill);
      font-weight: 600;
      font-size: 1rem;
      transition: all 0.3s ease;
      text-decoration: none;
      display: inline-block;
    }
.btn-white-custom:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(0,0,0,0.15);
      color: var(--main);
    }
.about-hero h1 { font-size: 2rem; }
.about-hero { padding: 50px 0 40px; }
.stat-number { font-size: 1.8rem; }
.update-item { flex-direction: column; gap: 10px; }
.cta-box { padding: 40px 20px; }

/* --- 子页面追加 --- */
/* 本页专属样式 — 免责声明页 */
        .disclaimer-hero {
            background: linear-gradient(135deg, var(--bg) 0%, #e0e7ff 100%);
            padding: 80px 0 60px;
            text-align: center;
            border-bottom: 1px solid rgba(79, 70, 229, 0.08);
        }
.disclaimer-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--main);
            margin-bottom: 16px;
            line-height: 1.3;
        }
.disclaimer-hero .lead {
            color: var(--text);
            opacity: 0.75;
            font-size: 1.15rem;
            max-width: 700px;
            margin: 0 auto;
        }
.disclaimer-section {
            padding: 60px 0;
        }
.disclaimer-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-light);
            margin-bottom: 40px;
            border: 1px solid rgba(79, 70, 229, 0.06);
            transition: box-shadow 0.3s ease;
        }
.disclaimer-card:hover {
            box-shadow: var(--shadow-hover);
        }
.disclaimer-card h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--main);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 14px;
        }
.disclaimer-card h2 i {
            color: var(--accent);
            font-size: 1.4rem;
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(79, 70, 229, 0.08);
            border-radius: 50%;
        }
.disclaimer-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text);
            margin: 24px 0 12px;
        }
.disclaimer-card p, .disclaimer-card li {
            color: var(--text);
            opacity: 0.85;
            line-height: 1.8;
            font-size: 0.98rem;
        }
.disclaimer-card ul, .disclaimer-card ol {
            padding-left: 20px;
            margin-bottom: 16px;
        }
.disclaimer-card li {
            margin-bottom: 10px;
        }
.highlight-box {
            background: rgba(79, 70, 229, 0.04);
            border-left: 4px solid var(--accent);
            padding: 20px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 24px 0;
        }
.highlight-box p {
            margin-bottom: 0;
            font-weight: 500;
        }
.effective-date {
            text-align: center;
            color: var(--text);
            opacity: 0.6;
            font-size: 0.95rem;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(79, 70, 229, 0.1);
        }
.disclaimer-hero h1 {
                font-size: 2rem;
            }
.disclaimer-card {
                padding: 24px;
            }
.disclaimer-card h2 {
                font-size: 1.3rem;
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

/* --- 子页面追加 --- */
.privacy-hero { background: linear-gradient(135deg, var(--bg), #ede9fe); padding: 80px 0 40px; border-radius: 0 0 var(--radius-lg) var(--radius-lg); }
.privacy-hero h1 { color: var(--text); font-weight: 800; }
.privacy-hero .lead { color: var(--text); opacity: .75; max-width: 760px; margin: 0 auto; }
.privacy-section { padding: 56px 0; }
.privacy-section:nth-child(even) { background: var(--bg); }
.privacy-card { background: var(--card-bg); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-light); border: 1px solid rgba(79, 70, 229, 0.08); transition: box-shadow .3s ease; }
.privacy-card:hover { box-shadow: var(--shadow-hover); }
.privacy-card h2 { color: var(--main); font-weight: 700; font-size: 1.6rem; margin-bottom: 20px; display: flex; align-items: center; gap: 12px; }
.privacy-card h2 i { color: var(--accent); }
.privacy-card h3 { color: var(--text); font-weight: 600; font-size: 1.1rem; margin-top: 24px; margin-bottom: 12px; }
.privacy-card p, .privacy-card li { color: var(--text); opacity: .8; line-height: 1.8; }
.privacy-card ul, .privacy-card ol { padding-left: 1.2rem; }
.privacy-card li { margin-bottom: 8px; }
.privacy-card .highlight-box { background: var(--bg); border-left: 4px solid var(--accent); padding: 16px 20px; border-radius: 0 var(--radius-md) var(--radius-md) 0; margin: 20px 0; }
.privacy-card .highlight-box p { margin: 0; }
.contact-info { background: linear-gradient(135deg, var(--main), var(--accent)); border-radius: var(--radius-lg); padding: 32px; color: #fff; margin-top: 32px; }
.contact-info h3 { color: #fff !important; }
.contact-info p { color: rgba(255,255,255,.9) !important; }
.contact-info a { color: #fff; text-decoration: underline; }
.last-updated { font-size: .9rem; opacity: .6; font-style: italic; margin-top: 16px; }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#1e1b4b !important; border-color:rgba(0,0,0,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#1e1b4b !important; }
.accordion-header { background:transparent !important; }