/*
Theme Name:SEO2
Version: 1.0
Author: SEO
*/
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Microsoft YaHei", sans-serif;
  background: #f5f5f5;
  color: #333;
  line-height: 1.7;
}
a {
  color: #333;
  text-decoration: none;
}
a:hover {
  color: #0066cc;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 布局 PC 1280 最佳宽度 */
.wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 15px;
}
.flex {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}
.main {
  flex: 0 0 670px;
}
.sidebar {
  flex: 0 0 260px;
}
@media (max-width: 900px) {
  .main, .sidebar {
    flex: 0 0 100%;
  }
}

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

/* 导航 */
.nav {
  background: #0066cc;
  margin-bottom: 20px;
}
.nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
}
.nav li a {
  color: #fff;
  padding: 12px 18px;
  display: block;
}
.nav li a:hover {
  background: #005bb5;
}

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

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

@media (max-width: 768px) {
  .grid { grid-template-columns: repeat(2,1fr); }
  .card { flex-direction: column; }
  .thumb { width: 100%; height: 200px; }
}

/* 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: 6px 0;
  font-size: 14px;
}

/* 翻页 */
.page-nav {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin: 20px 0;
}
.page-nav a, .page-nav span {
  padding: 8px 14px;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 4px;
  font-size: 14px;
}
.page-nav .current {
  background: #0066cc;
  color: #fff;
  border-color: #0066cc;
}

/* 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;
}