* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}

.header {
  background: #0d1b4c;
  color: #fff;
}
.navbar {
  max-width: 1200px;
  margin: auto;
  padding: 15px;
  display: flex;
  justify-content: space-between;
}
.navbar a {
  color: #fff;
  margin-left: 20px;
  text-decoration: none;
}

.logo {
  display: flex;
  vertical-align: middle;
  align-items: center;
}
.logo img {
  margin-right: 8px;
}
.logo span {
  font-size: 18px;
}

.banner {
  text-align: center;
  padding: 80px 20px;
  background: linear-gradient(135deg, #092472, #0d1b4c);
  color: #fff;
}
li {
  list-style: none;
}



.banner-stats {
  display: flex;
  justify-content: center;
  gap: 30px;
  list-style: none;
  padding: 0;
}

.sticky-nav {
  position: sticky;
  top: 0;
  background: #3057b5;
  display: flex;
  justify-content: center;
  gap: 40px;
  padding: 12px;
  z-index: 10;
}
.sticky-nav li {
  list-style: none;
}
.sticky-nav a {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: #fff;
  transition: background-color 0.3s ease;
}
.sticky-nav a:hover {
  background-color: rgba(255, 255, 255, 0.1);
}
.sticky-nav .nav-icon {
  width: 24px;
  height: 24px;
  filter: brightness(0) invert(1);
}

.section {
  padding: 80px 20px;
  text-align: center;
}

.desc {
  margin-bottom: 20px;
}
.section.dark {
  background: #0f1b4c;
  color: #fff;
}
.section.light {
  background: #f4f6fb;
}

.card-list {
  display: flex;
  gap: 20px;
  list-style: none;
  padding: 0;
  overflow-x: auto;
  scroll-behavior: smooth;
}
.card-list.center {
  justify-content: center;
  overflow: visible;
}

.card {
  min-width: 220px;
  padding: 40px 20px;
  background: #fff;
  border-radius: 6px;
  box-shadow: 0 10px 30px rgba(0,0,0,.1);
}
.dark .card {
  background: rgba(255,255,255,.1);
  color: #fff;
}

.list-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}
.arrow {
  background: none;
  border: none;
  font-size: 40px;
  cursor: pointer;
}

.actions {
  margin-top: 40px;
}
.btn {
  padding: 12px 36px;
  margin: 0 10px;
}
.primary {
  background: #3b7cff;
  color: #fff;
  border: none;
}
.outline {
  border: 2px solid #3b7cff;
  background: none;
  color: #3b7cff;
}

.footer {
  background: #0d1b4c;
  color: #ccc;
  text-align: center;
  padding: 30px;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.contact-info {
  display: flex;
  text-align: left;
}

.contact-info p {
  margin: 5px 0;
  font-size: 14px;
}

.contact-info strong {
  color: #fff;
}

.to-top {
  position: fixed;
  right: 20px;
  bottom: 30px;
}

/* 移动端适配 */
@media (max-width: 768px) {
  .sticky-nav {
    gap: 20px;
    padding: 8px;
    flex-wrap: wrap;
  }

  .sticky-nav a {
    padding: 6px 8px;
    font-size: 12px;
  }

  .sticky-nav .nav-icon {
    width: 20px;
    height: 20px;
  }

  .card-list {
    flex-direction: column;
    gap: 15px;
  }

  .card {
    min-width: auto;
    width: 100%;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .contact-info {
    text-align: center;
  }

  /* 移动端header只显示logo */
  .navbar nav {
    display: none;
  }

  .navbar {
    justify-content: center;
  }

  .logo {
    text-align: center;
    font-size: 18px;
    font-weight: bold;
  }
}