* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Microsoft YaHei", sans-serif; line-height: 1.6; color: #333; }
.bg-blue { background-color: #0b3d91; }
.text-white { color: #fff; }
.text-blue { color: #0b3d91; }

/* 容器 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }

/* 顶部横幅 - 蓝白渐变 */
.header-banner {
  width: 100%;
  height: 150px;
  background: linear-gradient(135deg, #0b3d91 0%, #1a73e8 100%);
  background-size: cover;
  position: relative;
  display: flex;
  align-items: center;
}
.banner-content {
  height: 100%;
  display: flex;
  align-items: center;
  color: #fff;
}
.header-logo-box {
  display: flex;
  align-items: center;
  gap: 20px;
}
.header-logo-box .logo-img {
  height: 90px;
  width: auto;
  object-fit: contain; 
}
.header-title-box h1 {
  font-size: 32px;
  font-weight: bold;
  letter-spacing: 4px;
  margin: 0;
}
.header-title-box p {
  font-size: 14px;
  letter-spacing: 2px;
  margin-top: 5px;
  opacity: 0.85;
}

/* 导航栏 - 居中显示 */
.nav-bar {
  width: 100%;
  background-color: #0b3d91;
  border-bottom: 2px solid #1a73e8;
}
.nav-bar .container {
  display: flex;
  justify-content: center;
  align-items: center;
}
.nav-list {
  display: flex;
  list-style: none;
  flex-wrap: wrap;
}
.nav-list li { position: relative; }
.nav-list li a {
  display: block;
  padding: 16px 28px;
  color: #fff;
  text-decoration: none;
  font-size: 16px;
  transition: background-color 0.3s;
  white-space: nowrap;
}
.nav-list li a:hover,
.nav-list li.active a {
  background-color: #1a73e8;
}

/* 页脚 */
.footer {
  background-color: #333;
  color: #ccc;
  padding: 30px 0 20px 0;
  margin-top: 40px;
}
.footer-content { display: flex; justify-content: space-between; flex-wrap: wrap; padding-bottom: 20px; border-bottom: 1px solid #444; }
.footer-section { width: 100%; }
.footer-section h4 { color: #fff; font-size: 16px; margin-bottom: 15px; }
.friend-links { display: flex; flex-wrap: wrap; gap: 15px; justify-content: flex-start; }
.friend-links a { color: #ccc; text-decoration: none; font-size: 15px; }
.friend-links a:hover { color: #fff; }
.footer-bottom { text-align: center; padding-top: 20px; font-size: 13px; }

/* 移动端适配 */
@media (max-width: 768px) {
  .header-banner { height: auto; padding: 20px 0; }
  .header-logo-box { flex-direction: column; text-align: center; gap: 10px; }
  .header-logo-box .logo-img { height: 70px; }
  .header-title-box h1 { font-size: 24px; }
  .header-title-box p { font-size: 12px; }
  
  .nav-list { justify-content: center; width: 100%; }
  .nav-list li a { padding: 12px 14px; font-size: 14px; }
  .footer-content { flex-direction: column; }
  .friend-links { flex-direction: column; gap: 10px; }
}