/*
Theme Name: SEO4
Version: 1.0
Author: FastSEO
*/
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Microsoft YaHei", sans-serif;
  background: #f6f6f6;
  color: #333;
  line-height: 1.7;
}
a {
  color: #333;
  text-decoration: none;
}
a:hover {
  color: #0073aa;
}
img {
  max-width: 100%;
  height: auto;
}

/* 布局 - PC 端固定结构，侧边栏绝对不跑位 */
.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 15px;
}
.row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}
.main {
  width: 680px;
}
.sidebar {
  width: 260px;
}

/* 移动端 */
@media (max-width: 900px) {
  .row {
    flex-direction: column;
  }
  .main, .sidebar {
    width: 100%;
  }
}

/* 头部 */
.header {
  background: #fff;
  padding: 20px 0;
  text-align: center;
  margin-bottom: 20px;
  border-bottom: 1px solid #eee;
}
.logo {
  font-size: 22px;
  font-weight: bold;
}

/* 导航 */
.nav {
  background: #0073aa;
  margin-bottom: 20px;
}
.nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
}
.nav a {
  color: #fff;
  padding: 12px 20px;
  display: block;
}

/* 文章卡片 */
.card {
  background: #fff;
  padding: 15px;
  border-radius: 6px;
  margin-bottom: 15px;
  display: flex;
  gap: 15px;
}
.thumb {
  width: 160px;
  height: 160px;
  object-fit: cover;
  flex-shrink: 0;
  background: #f1f1f1;
}
.info {
  flex: 1;
}
.title {
  font-size: 17px;
  margin-bottom: 5px;
}
.date {
  font-size: 12px;
  color: #999;
  margin-bottom: 8px;
}
.excerpt {
  font-size: 14px;
  color: #666;
}

/* 网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  margin: 20px 0;
}
.grid-item {
  background: #fff;
  border-radius: 6px;
  overflow: hidden;
}
.grid-thumb {
  width: 100%;
  height: 150px;
  object-fit: cover;
}
.grid-title {
  padding: 10px;
  font-size: 14px;
}

/* 侧边栏 */
.widget {
  background: #fff;
  padding: 18px;
  border-radius: 6px;
  margin-bottom: 15px;
}
.widget h3 {
  font-size: 16px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid #eee;
}
.widget ul {
  list-style: none;
}
.widget li {
  padding: 5px 0;
  font-size: 14px;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin: 20px 0;
}
.pagination a, .pagination span {
  padding: 7px 14px;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 4px;
}
.pagination .current {
  background: #0073aa;
  color: #fff;
  border-color: #0073aa;
}

/* 内容页 */
.single {
  background: #fff;
  padding: 25px;
  border-radius: 6px;
}
.single h1 {
  font-size: 22px;
  text-align: center;
  margin-bottom: 15px;
}
.content {
  font-size: 16px;
  line-height: 1.9;
  margin-top: 20px;
}