:root {
  --primary-color: #2c5aa0;
  --secondary-color: #4a90e2;
  --accent-color: #e74c3c;
  --success-color: #27ae60;
  --light-bg: #f8f9fa;
  --dark-text: #2c3e50;
  --gold-color: #ffd700;
}

body {
  font-family: "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  color: var(--dark-text);
}

/* Enhanced navigation styles with active states and hover effects */
.navbar {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 1rem 0;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: rgba(44, 90, 160, 0.95);
  backdrop-filter: blur(10px);
}

.navbar-brand {
  font-size: 1.8rem;
  font-weight: bold;
  color: white !important;
  transition: transform 0.3s ease;
}

.navbar-brand:hover {
  transform: scale(1.05);
}

.navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.9) !important;
  font-weight: 500;
  margin: 0 0.5rem;
  padding: 0.5rem 1rem !important;
  border-radius: 25px;
  position: relative;
  transition: all 0.3s ease;
  transform: translateY(0);
}

.navbar-nav .nav-link:hover {
  color: white !important;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.navbar-nav .nav-link.active {
  color: white !important;
  background: rgba(255, 255, 255, 0.2);
  position: relative;
}

.navbar-nav .nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background: var(--gold-color);
  border-radius: 2px;
}

.dropdown-menu {
  background: white;
  border: none;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  border-radius: 10px;
  margin-top: 10px;
}

.dropdown-item {
  padding: 0.75rem 1.5rem;
  transition: all 0.3s ease;
}

.dropdown-item:hover {
  background: var(--light-bg);
  color: var(--primary-color);
  transform: translateX(5px);
}

/* 轮播图样式 */
.hero-carousel {
  height: 100vh;
  position: relative;
  overflow: hidden;
}

.carousel-item {
  height: 100vh;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.carousel-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, rgba(44, 90, 160, 0.7), rgba(74, 144, 226, 0.5));
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: bold;
  margin-bottom: 1.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-content p {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.carousel-control-prev,
.carousel-control-next {
  width: 5%;
}

.carousel-indicators button {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin: 0 5px;
}

/* 通用样式 */
.section-title {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title h2 {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.section-title p {
  font-size: 1.1rem;
  color: #666;
  max-width: 600px;
  margin: 0 auto;
}

/* 三级医疗网络样式 */
.medical-network {
  padding: 5rem 0;
  background: var(--light-bg);
}

.network-chart {
  background: white;
  border-radius: 15px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  height: 400px;
}

.network-stats .stat-item {
  transition: transform 0.3s ease;
}

.network-stats .stat-item:hover {
  transform: translateY(-5px);
}

.network-stats h4 {
  font-size: 1.3rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

/* 核心能力样式 */
.core-abilities {
  padding: 5rem 0;
  background: white;
}

.ability-card {
  background: white;
  border-radius: 15px;
  padding: 2.5rem;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  height: 100%;
}

.ability-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.ability-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.ability-icon i {
  font-size: 2rem;
  color: white;
}

.ability-card h4 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-weight: bold;
}

/* 动态资讯样式 */
.news-section {
  padding: 5rem 0;
  background: var(--light-bg);
}

.news-card {
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  margin-bottom: 2rem;
  transition: transform 0.3s ease;
}

.news-card:hover {
  transform: translateY(-5px);
}

.news-image {
  height: 250px;
  background-size: cover;
  background-position: center;
}

/* 便民工具样式 */
.tools-section {
  padding: 5rem 0;
  background: white;
}

.tool-item {
  background: white;
  border-radius: 15px;
  padding: 2rem;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  height: 100%;
  cursor: pointer;
}

.tool-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.tool-icon {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.tool-icon i {
  font-size: 1.8rem;
  color: white;
}

.tool-item h5 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-weight: bold;
}

/* 医者风采样式 */
.doctors-section {
  padding: 5rem 0;
  background: var(--light-bg);
}

.doctor-card {
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  height: 100%;
}

.doctor-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.doctor-avatar {
  height: 250px;
  background-size: cover;
  background-position: center;
}

.doctor-info {
  padding: 1.5rem;
}

.doctor-info h5 {
  color: var(--dark-text);
  margin-bottom: 0.5rem;
  font-weight: bold;
}

/* 底部样式 */
.footer {
  background: linear-gradient(135deg, var(--dark-text), #34495e);
  color: white;
  padding: 3rem 0 1rem;
}

.footer-section h5 {
  color: white;
  margin-bottom: 1.5rem;
  font-weight: bold;
}

.footer-section ul {
  list-style: none;
  padding: 0;
}

.footer-section ul li {
  margin-bottom: 0.5rem;
}

.footer-section ul li a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section ul li a:hover {
  color: white;
}

.social-links a {
  display: inline-block;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  text-align: center;
  line-height: 40px;
  transition: all 0.3s ease;
}

.social-links a:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-content p {
    font-size: 1.1rem;
  }

  .section-title h2 {
    font-size: 2rem;
  }

  .network-chart {
    margin-bottom: 2rem;
  }
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animated {
  animation: fadeInUp 0.6s ease-out;
}