* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  min-height: 100vh;
  background-attachment: fixed;
}
a {
  text-decoration: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
/* 导航栏 */
.navbar {
  background: rgba(25, 42, 86, 0.95);
  padding: 15px 0;
  /*position: fixed;*/
  width: 100%;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}
@media (min-width: 768px) {
  .navbar {
    background: rgba(25, 42, 86, 0.95);
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  }
}
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  color: #fff;
  font-size: 1.8em;
  font-weight: 700;
  text-decoration: none;
  display: flex;
  align-items: center;
}
.logo-icon {
  margin-right: 10px;
  color: #00d4ff;
}
.nav-links {
  list-style: none;
  display: flex;
}
.nav-links li {
  margin-left: 30px;
  position: relative;
}
.nav-links a {
  color: #e0e0e0;
  text-decoration: none;
  padding: 10px 15px;
  border-radius: 25px;
  transition: all 0.3s ease;
  position: relative;
  font-weight: 500;
}
.nav-links a:hover {
  color: #00d4ff;
  background: rgba(0, 212, 255, 0.1);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  width: 0;
  height: 2px;
  background: #00d4ff;
  transition: all 0.3s ease;
  transform: translateX(-50%);
}
.nav-links a:hover::after {
  width: 70%;
}
/* 关于我们下拉菜单 */
.dropdown {
  position: relative;
  display: inline-block;
}
.dropdown-content {
  display: none;
  position: absolute;
  background: rgba(25, 42, 86, 0.95);
  min-width: 200px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  z-index: 1;
  top: 100%;
  left: 0;
  margin-top: 5px;
  overflow: hidden;
}
.dropdown-content a {
  color: #e0e0e0;
  padding: 12px 20px;
  text-decoration: none;
  display: block;
  transition: all 0.3s ease;
}
.dropdown-content a:hover {
  background: rgba(0, 212, 255, 0.2);
  color: #00d4ff;
}
.dropdown:hover .dropdown-content {
  display: block;
}
.dropdown:hover .dropbtn {
  color: #00d4ff;
  background: rgba(0, 212, 255, 0.1);
}
.dropbtn::after {
  content: ' ▼';
  font-size: 0.8em;
  margin-left: 5px;
}
/* 主内容区 */
.main-content {
  margin-top: 80px;
  padding: 20px 0;
}
/* 英雄区域 */
.hero {
  position: relative;
  height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  margin-bottom: 60px;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at center, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 20px;
}
.hero h1 {
  font-size: 3rem;
  color: #fff;
  margin-bottom: 20px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 1s ease-out;
}
.hero p {
  font-size: 1.5rem;
  color: #e0e0e0;
  margin-bottom: 30px;
  animation: fadeInUp 1s ease-out 0.2s both;
}
.cta-button {
  display: inline-block;
  background: linear-gradient(45deg, #00d4ff, #0077ff);
  color: white;
  text-decoration: none;
  padding: 15px 30px;
  border-radius: 30px;
  font-size: 1.1rem;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 8px 25px rgba(0, 119, 255, 0.3);
  animation: fadeInUp 1s ease-out 0.4s both;
}
.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 119, 255, 0.4);
}
/* 通知公告 */
.section {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 15px;
  padding: 35px;
  margin-bottom: 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
}
.section h2 {
  color: #1a365d;
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 3px solid #00d4ff;
  font-size: 1.5rem;
  position: relative;
}
h2 a {
  color: #1a365d;
}
h2 a:visited {
  color: #1a365d;
}
.section h2::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(45deg, #00d4ff, #0077ff);
}
/*
        .section a {
            color: #1a365d;
            margin-bottom: 25px;
            padding-bottom: 15px;            
            font-size: 2rem;
            position: relative;
        }
        */
.announcement {
  padding: 15px 0;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  transition: transform 0.3s ease;
}
.post {
  padding: 15px 0;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
}
.post img {
  max-width: 95%;
  object-fit: contain;
}
.post-title {
  color: #1a365d;
  text-align: center;
  font-size: 2rem;
  position: relative;
}
.tag-container {
  text-align: center;
  border-bottom: 3px solid #00d4ff;
}
.tag-container a {
  color: #000000;
  text-decoration: none;
  padding: 10px 15px;
  border-radius: 25px;
  transition: all 0.3s ease;
  position: relative;
  font-weight: 500;
}
.announcement:hover {
  transform: translateX(10px);
}
.announcement:last-child {
  border-bottom: none;
}
.announcement-date {
  background: linear-gradient(45deg, #00d4ff, #0077ff);
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.9rem;
  margin-right: 15px;
  min-width: 100px;
  text-align: center;
}
.announcement-content {
  flex: 1;
  font-size: 1.1rem;
  color: #2d3748;
}
/* 文章摘要 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 25px;
  margin-top: 20px;
}
.article-card {
  background: white;
  border-radius: 15px;
  padding: 25px;
  margin-bottom: 20px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
}
.article-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(45deg, #00d4ff, #0077ff);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}
.article-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}
.article-card:hover::before {
  transform: scaleX(1);
}
.article-card h3 {
  color: #1a365d;
  margin-bottom: 12px;
  font-size: 1.3rem;
  transition: color 0.3s ease;
}
.article-card:hover h3 {
  color: #0077ff;
}
.article-meta {
  color: #718096;
  font-size: 0.9rem;
  margin-bottom: 15px;
  display: flex;
  justify-content: space-between;
}
.article-excerpt {
  color: #4a5568;
  margin-bottom: 20px;
  line-height: 1.7;
}
.read-more {
  display: inline-block;
  background: linear-gradient(45deg, #00d4ff, #0077ff);
  color: white;
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 25px;
  font-weight: 500;
  transition: all 0.3s ease;
}
.read-more:hover {
  transform: scale(1.05);
  box-shadow: 0 5px 15px rgba(0, 119, 255, 0.4);
}
/* 统计数据区域 */
.stats-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin: 40px 0;
}
.stat-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 25px;
  text-align: center;
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
}
.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: #00d4ff;
  margin-bottom: 10px;
}
.stat-label {
  font-size: 1rem;
  opacity: 0.8;
}
/* 关于我们详细内容 */
.about-section {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 15px;
  padding: 40px;
  margin-bottom: 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
}
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.about-text {
  color: #2d3748;
}
.about-text h2 {
  color: #1a365d;
  margin-bottom: 20px;
  font-size: 2rem;
}
.about-text p {
  margin-bottom: 15px;
  line-height: 1.8;
}
.about-image {
  text-align: center;
}
.about-image img {
  max-width: 100%;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}
/* 页脚 */
#footer {
  background: rgba(10, 20, 40, 0.95);
  color: #cbd5e0;
  padding: 60px 0 30px;
  margin-top: 80px;
  backdrop-filter: blur(10px);
}
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}
.footer-column h3 {
  color: #e2e8f0;
  margin-bottom: 20px;
  font-size: 1.2rem;
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: #cbd5e0;
  text-decoration: none;
  transition: color 0.3s ease;
}
.footer-links a:hover {
  color: #00d4ff;
}
.social-links {
  display: flex;
  gap: 15px;
  margin-top: 15px;
}
.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  color: #e2e8f0;
  border-radius: 50%;
  transition: all 0.3s ease;
  text-decoration: none;
}
.social-links a:hover {
  background: #00d4ff;
  transform: translateY(-3px);
}
.copyright {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #a0aec0;
}
/* 动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
/* 响应式设计 */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  .hero p {
    font-size: 1.2rem;
  }
  .section {
    padding: 25px;
  }
  .nav-container {
    flex-direction: column;
    gap: 15px;
  }
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
  .nav-links li {
    margin: 5px 10px;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .about-content {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .dropdown-content {
    position: static;
    display: none;
    box-shadow: none;
    margin-top: 10px;
    background: rgba(25, 42, 86, 0.8);
  }
  .dropdown:hover .dropdown-content {
    display: block;
  }
}