* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  font-size: 15px;
  color: #222222;
  line-height: 1.6;
  background: #ffffff;
}

a {
  color: #0a6ebd;
  text-decoration: none;
}

a:hover {
  color: #085a99;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: 92%;
  max-width: 1180px;
  margin: 0 auto;
}

.site-header {
  background: #0a6ebd;
  color: #ffffff;
}

.site-header a {
  color: #ffffff;
}

.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  flex-wrap: wrap;
}

.logo {
  font-size: 22px;
  font-weight: bold;
}

.site-header nav a {
  margin-left: 18px;
  display: inline-block;
}

.hero {
  background: #eef5fb;
  padding: 70px 0;
  text-align: center;
}

.hero h1 {
  font-size: 36px;
  margin: 0 0 10px 0;
}

.hero p {
  font-size: 16px;
  color: #555555;
  margin: 0 0 20px 0;
}

.btn {
  display: inline-block;
  background: #0a6ebd;
  color: #ffffff;
  padding: 10px 22px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  font-size: 15px;
}

.btn:hover {
  background: #085a99;
  color: #ffffff;
}

.section {
  padding: 50px 0;
}

.section h1 {
  font-size: 30px;
  margin: 0 0 20px 0;
}

.section h2 {
  font-size: 26px;
  margin: 0 0 24px 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.card {
  border: 1px solid #eeeeee;
  border-radius: 6px;
  padding: 12px;
  background: #ffffff;
  color: #222222;
  transition: all 0.2s ease;
  display: block;
}

.card:hover {
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
  color: #222222;
}

.card h3 {
  font-size: 16px;
  margin: 10px 0 6px 0;
}

.card p {
  font-size: 13px;
  color: #666666;
  margin: 0;
}

.cats {
  margin-bottom: 20px;
}

.cats a {
  display: inline-block;
  padding: 6px 14px;
  margin: 0 8px 8px 0;
  border: 1px solid #dddddd;
  border-radius: 20px;
  color: #333333;
}

.cats a.active {
  background: #0a6ebd;
  color: #ffffff;
  border-color: #0a6ebd;
}

.detail-img {
  max-width: 600px;
  margin: 20px 0;
}

.content {
  margin: 20px 0;
}

.news-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.news-list li {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid #eeeeee;
}

.news-list span {
  color: #999999;
  font-size: 13px;
}

.form input,
.form textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 12px;
  border: 1px solid #dddddd;
  border-radius: 4px;
  font-size: 15px;
}

.form button {
  margin-top: 4px;
}

.success {
  color: #0a8a3a;
  font-weight: bold;
}

.site-footer {
  background: #222222;
  color: #bbbbbb;
  padding: 26px 0;
  margin-top: 40px;
  font-size: 14px;
  text-align: center;
}

.admin-body {
  background: #f4f6f9;
}

.admin-wrap {
  display: flex;
  min-height: 100vh;
}

.admin-side {
  width: 210px;
  background: #1f2d3d;
  color: #c9d3df;
  padding: 20px 0;
}

.admin-side a {
  display: block;
  color: #c9d3df;
  padding: 10px 20px;
}

.admin-side a:hover,
.admin-side a.active {
  background: #0a6ebd;
  color: #ffffff;
}

.admin-main {
  flex: 1;
  padding: 24px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
}

.admin-table th,
.admin-table td {
  border: 1px solid #e5e5e5;
  padding: 10px;
  text-align: left;
  font-size: 14px;
}

.admin-table th {
  background: #f0f2f5;
}

.admin-form input,
.admin-form textarea,
.admin-form select {
  width: 100%;
  padding: 8px;
  margin-bottom: 12px;
  border: 1px solid #cccccc;
  border-radius: 4px;
  font-size: 14px;
}

.admin-form label {
  display: block;
  font-size: 13px;
  color: #555555;
  margin-bottom: 4px;
}

.admin-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

@media (max-width: 900px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .nav-wrap {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-header nav a {
    margin: 6px 12px 0 0;
  }

  .hero h1 {
    font-size: 26px;
  }

  .admin-wrap {
    flex-direction: column;
  }

  .admin-side {
    width: 100%;
  }
}