/* 基础样式 */
 body {
  background-color: #f9fafb;
  font-family: 'Inter', sans-serif;
  overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
  z-index: 100;
}

.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.1);
}

/* 汉堡菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 20px;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: #0d58a2;
  border-radius: 3px;
  transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(8.5px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-20px);
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-8.5px) rotate(-45deg);
}

/* 移动端导航菜单 */
.mobile-nav {
  display: none;
  width: 100%;
  background-color: white;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
  overflow: hidden;
  border-radius: 0 0 12px 12px;
}

.mobile-nav a {
  display: block;
  padding: 15px 20px;
  color: #333;
  text-decoration: none;
  transition: all 0.3s ease;
  font-weight: 500;
}

.mobile-nav a:hover {
  background-color: #f5f7fa;
  color: #0d58a2;
}

/* 页脚样式 */
.footer {
  width: 100%;
  background-color: #1a202c;
  padding: clamp(25px, 5vw, 40px) 0;
  position: relative;
  bottom: 0;
  display: flex;
  justify-content: center;
  color: #e2e8f0;
}

.contact-info {
  font-size: clamp(14px, 3vw, 16px);
  text-align: center;
  line-height: 1.8;
  padding: 0 15px;
}

.contact-info strong {
  color: #ffffff;
  font-weight: 500;
}

.contact-info a {
  color: #00c2ff;
  text-decoration: none;
  transition: color 0.3s ease;
}

.contact-info a:hover {
  color: #4ddbff;
  text-decoration: underline;
}

/* 移动端导航适配 */
@media (max-width: 768px) {
  .menu-toggle {
      display: flex;
  }

  .desktop-nav {
      display: none;
  }

  .mobile-nav {
      display: block;
  }
}

/* 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #0d58a2;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #00c2ff;
}