* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", sans-serif;
}
:root {
  --main: #1a73e8;
  --sub: #ff7000;
  --light: #f5f9fa;
  --dark: #333;
  --gray: #666;
}
body {
  background: #fff;
  color: var(--dark);
  line-height: 1.7;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}
a {
  text-decoration: none;
  color: inherit;
}
ul {
  list-style: none;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.breadcrumb {
  padding: 12px 0;
  color: var(--gray);
  font-size: 14px;
  margin-bottom: 10px;
}
.breadcrumb a {
  color: var(--main);
}
.breadcrumb a:hover {
  color: var(--sub);
}
.main-title {
  font-size: 38px;
  text-align: center;
  color: var(--dark);
  margin: 10px 0 5px;
  line-height: 1.3;
}
.update-time {
  text-align: center;
  color: var(--gray);
  font-size: 14px;
  margin-bottom: 20px;
}
.title {
  font-size: 32px;
  text-align: center;
  color: var(--dark);
  margin-bottom: 10px;
}
.content-block h3 {
  font-size: 20px;
  color: var(--dark);
  margin-bottom: 15px;
}
.header {
  background: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 999;
}
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}
.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--main);
}
.nav-menu {
  display: flex;
  gap: 30px;
}
.nav-menu a {
  font-size: 16px;
  font-weight: 500;
  padding: 8px 0;
  transition: 0.3s;
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--sub);
  border-bottom: 2px solid var(--sub);
}
.hero {
  background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4)), url("images/hero.jpg");
  background-size: cover;
  background-position: center;
  padding: 80px 0;
  color: #fff;
  text-align: center;
  margin: 20px 0;
  border-radius: 10px;
}
.hero p {
  font-size: 18px;
  max-width: 800px;
  margin: 0 auto;
}
.hero a {
  color: #ffd700;
  text-decoration: underline;
}
.slider {
  position: relative;
  width: 100%;
  height: 450px;
  overflow: hidden;
  border-radius: 10px;
  margin: 30px 0;
}
.slider-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease;
}
.slider-item.active {
  opacity: 1;
}
.slider-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card-box {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 20px 0;
}
.card {
  background: #fff;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 3px 15px rgba(0,0,0,0.08);
  transition: 0.3s;
}
.card:hover {
  transform: translateY(-5px);
}
.card-img {
  height: 220px;
  object-fit: cover;
}
.card-body {
  padding: 20px;
}
.card-body h3 {
  font-size: 18px;
  margin-bottom: 10px;
}
.card-body p {
  color: var(--gray);
  font-size: 14px;
  margin-bottom: 15px;
}
.btn {
  display: inline-block;
  padding: 8px 20px;
  background: var(--sub);
  color: #fff;
  border-radius: 5px;
  font-size: 14px;
  transition: 0.3s;
}
.btn:hover {
  background: var(--main);
}
.content-block {
  background: var(--light);
  padding: 30px;
  border-radius: 10px;
  margin: 20px 0;
  line-height: 1.8;
  font-size: 15px;
}
.content-block a {
  color: var(--main);
  font-weight: 500;
}
.content-block a:hover {
  color: var(--sub);
}
.related-links {
  margin: 40px 0;
  padding: 20px;
  background: var(--light);
  border-radius: 10px;
}
.related-links h3 {
  font-size: 20px;
  margin-bottom: 15px;
  color: var(--dark);
}
.link-group {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.link-group a {
  color: var(--main);
  transition: 0.3s;
}
.link-group a:hover {
  color: var(--sub);
}
.footer {
  background: #222;
  color: #fff;
  padding: 30px 0 20px;
  margin-top: 30px;
}
.footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.footer-copyright {
  text-align: center;
  color: #aaa;
  font-size: 13px;
  border-top: 1px solid #444;
  padding-top: 15px;
}
@media (max-width: 768px) {
  .main-title { font-size: 28px; }
  .title { font-size: 24px; }
  .nav { flex-direction: column; height: auto; padding: 15px 0; }
  .nav-menu { margin-top: 15px; gap: 15px; }
  .hero { padding: 50px 0; }
  .slider { height: 250px; }
  .card-box { grid-template-columns: 1fr; }
  .link-group { flex-direction: column; gap: 10px; }
}