* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "Microsoft YaHei","PingFang SC",sans-serif;
  line-height: 1.7;
  color: #333;
  background: #f7f9fc;
  position: relative;
  min-height: 100vh;
}
/* 光源润化背景：柔和径向光晕 + 浅底色 */
body::before {
  content: '';
  position: fixed;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 120%;
  height: 80%;
  background: radial-gradient(ellipse at 50% 0%, rgba(46,134,193,0.12) 0%, rgba(255,255,255,0) 60%);
  pointer-events: none;
  z-index: 0;
}
body::after {
  content: '';
  position: fixed;
  bottom: -10%;
  right: -10%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, rgba(46,204,113,0.06) 0%, rgba(255,255,255,0) 70%);
  pointer-events: none;
  z-index: 0;
}
.disclaimer-bar {
  background: #e74c3c;
  color: #fff;
  text-align: center;
  padding: 10px 20px;
  font-size: 14px;
  position: sticky;
  top: 0;
  z-index: 1000;
}
/* 首屏横幅：纯色系 + 柔和渐变，不用实景图当背景 */
header {
  background: linear-gradient(135deg, #1a5276 0%, #2e86c1 50%, #3498db 100%);
  color: #fff;
  padding: 50px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 50%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(255,255,255,0.15) 0%, transparent 70%);
  pointer-events: none;
}
header h1 { font-size: 2em; margin-bottom: 8px; position: relative; }
header p { opacity: 0.9; position: relative; }
nav {
  background: #fff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
  position: sticky;
  top: 44px;
  z-index: 999;
}
nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  flex-wrap: wrap;
  max-width: 900px;
  margin: 0 auto;
}
nav li a {
  display: block;
  padding: 14px 18px;
  color: #1a5276;
  text-decoration: none;
  font-size: 15px;
  transition: background 0.2s;
}
nav li a:hover, nav li a.active {
  background: #eaf2f8;
  font-weight: bold;
}
main {
  max-width: 900px;
  margin: 30px auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}
section {
  background: #fff;
  border-radius: 10px;
  padding: 30px;
  margin-bottom: 24px;
  box-shadow: 0 2px 12px rgba(26,82,118,0.08);
}
section h2 {
  color: #1a5276;
  border-left: 5px solid #2e86c1;
  padding-left: 14px;
  margin-bottom: 18px;
  font-size: 1.4em;
}
section h3 {
  color: #2e86c1;
  margin: 20px 0 10px;
  font-size: 1.1em;
}
section p { margin-bottom: 12px; text-align: justify; }
section ul, section ol { margin: 10px 0 15px 24px; }
section li { margin-bottom: 6px; }
/* 图片卡片样式 */
.photo-card {
  border-radius: 12px;
  overflow: hidden;
  margin: 20px 0;
  box-shadow: 0 4px 16px rgba(26,82,118,0.12);
  position: relative;
}
.photo-card img {
  width: 100%;
  display: block;
  transition: transform 0.3s ease;
}
.photo-card:hover img { transform: scale(1.02); }
.photo-caption {
  padding: 10px 16px;
  background: #f8fafc;
  font-size: 13px;
  color: #666;
  text-align: center;
}
.badge {
  display: inline-block;
  background: #eaf2f8;
  color: #1a5276;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 13px;
  margin: 4px 6px 4px 0;
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(140px,1fr));
  gap: 16px;
  margin: 20px 0;
}
.stat-card {
  background: linear-gradient(135deg, #f0f6fb, #e8f0f8);
  border-radius: 8px;
  padding: 20px;
  text-align: center;
}
.stat-card .num { font-size: 1.8em; font-weight: bold; color: #1a5276; }
.stat-card .label { font-size: 13px; color: #666; margin-top: 4px; }
.notice {
  background: #fff3cd;
  border-left: 4px solid #f0ad4e;
  padding: 14px 18px;
  border-radius: 6px;
  margin: 16px 0;
  font-size: 14px;
  color: #856404;
}
.podcast-player {
  background: linear-gradient(135deg, #1a5276, #2e86c1);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  color: #fff;
  margin: 20px 0;
}
.podcast-player a {
  display: inline-block;
  background: #2ecc71;
  color: #fff;
  padding: 14px 32px;
  border-radius: 30px;
  text-decoration: none;
  font-size: 16px;
  margin-top: 16px;
  transition: background 0.2s;
}
.podcast-player a:hover { background: #27ae60; }
footer {
  text-align: center;
  padding: 30px 20px;
  color: #999;
  font-size: 13px;
  position: relative;
  z-index: 1;
}
@media (max-width: 600px) {
  header { padding: 35px 20px; }
  header h1 { font-size: 1.4em; }
  nav li a { padding: 10px 12px; font-size: 13px; }
  section { padding: 20px; }
}