/*
Theme Name: portal25
Description: 随机配色三栏自适应SEO主题
Version: 1.0
Author: 豆包
*/
:root {
  --c: #007bff;
}
* {
  margin:0;
  padding:0;
  box-sizing:border-box;
}
body {
  font-family:"Microsoft YaHei",sans-serif;
  background:#f6f7f9;
  color:#222;
  line-height:1.7;
}
a {
  color:var(--c);
  text-decoration:none;
}
a:hover {
  filter:brightness(0.8);
}
img {
  max-width:100%;
  height:auto;
}
.container {
  max-width:1300px;
  margin:0 auto;
  padding:0 15px;
}

/* 三栏布局 */
.main {
  display:grid;
  grid-template-columns:250px 1fr 250px;
  gap:20px;
  margin:30px 0;
}
@media (max-width:1100px) {
  .main { grid-template-columns:1fr; }
  .sidebar { display:none; }
}

/* 头部 */
.header {
  background:var(--c);
  color:#fff;
  padding:22px 0;
}
.header-inner {
  display:flex;
  justify-content:space-between;
  align-items:center;
}
.logo a {
  font-size:24px;
  font-weight:bold;
  color:#fff;
}
.nav a {
  color:#fff;
  margin-left:20px;
  font-size:14px;
}

/* 面包屑 */
.bread {
  background:#fff;
  padding:10px 15px;
  font-size:13px;
  margin-bottom:20px;
  border-left:3px solid var(--c);
  box-shadow:0 1px 2px rgba(0,0,0,0.05);
}

/* 文章卡片 */
.post {
  background:#fff;
  padding:22px;
  margin-bottom:20px;
  box-shadow:0 1px 3px rgba(0,0,0,0.05);
  border-radius:5px;
}
.post-title {
  font-size:18px;
  margin-bottom:8px;
}
.post-meta {
  font-size:12px;
  color:#666;
  margin-bottom:10px;
}
.post-meta span {
  margin-right:10px;
}
.post-excerpt {
  font-size:14px;
  color:#333;
}

/* 分页 */
.pages {
  text-align:center;
  margin:20px 0;
}
.pages a,.pages span {
  display:inline-block;
  padding:6px 12px;
  background:#fff;
  border:1px solid #ddd;
  margin:0 2px;
}
.pages .current {
  background:var(--c);
  color:#fff;
  border-color:var(--c);
}

/* 侧边栏 */
.sidebar {
  background:#fff;
  padding:20px;
  box-shadow:0 1px 3px rgba(0,0,0,0.05);
  border-radius:5px;
}
.widget {
  margin-bottom:25px;
}
.widget h3 {
  font-size:15px;
  padding-bottom:8px;
  border-bottom:2px solid var(--c);
  margin-bottom:12px;
}
.widget ul {
  list-style:none;
}
.widget li {
  padding:6px 0;
  border-bottom:1px dashed #eee;
  font-size:13px;
}
.side-box {
  display:flex;
  gap:8px;
  align-items:center;
}
.side-img {
  width:50px;
  height:50px;
  object-fit:cover;
}

/* 内容页 */
.single-title {
  font-size:24px;
  margin-bottom:15px;
}
.single-meta {
  font-size:12px;
  color:#666;
  margin-bottom:20px;
}
.single-content {
  background:#fff;
  padding:25px;
  font-size:16px;
  line-height:1.9;
  box-shadow:0 1px 3px rgba(0,0,0,0.05);
}
.post-nav {
  background:#fff;
  padding:15px;
  margin:20px 0;
  border-top:1px solid #eee;
  border-bottom:1px solid #eee;
  font-size:14px;
}
.post-nav div { padding:5px 0; }
.related {
  background:#fff;
  padding:20px;
  margin-top:20px;
}
.related h3 {
  border-bottom:2px solid var(--c);
  padding-bottom:8px;
  margin-bottom:12px;
}

/* 底部 */
.footer {
  background:#222;
  color:#fff;
  text-align:center;
  padding:20px 0;
  font-size:13px;
}