/* 站点公共样式（index.php / article.php 共用，可被浏览器与蜘蛛缓存） */

:root {
  --main: #1a6dff;
  --text: #222;
  --muted: #8a8f99;
  --line: #ebedf0;
  --bg: #f5f6f8;
  --card: #fff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  -webkit-text-size-adjust: 100%;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--main); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

/* ---------- 顶部 ---------- */
.site-header { background: var(--card); border-bottom: 1px solid var(--line); }
.site-header .inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 18px 0; flex-wrap: wrap;
}
.logo { font-size: 22px; font-weight: 700; color: var(--main); letter-spacing: .5px; }
.logo a { color: inherit; text-decoration: none; }
h1.logo { margin: 0; font-size: 22px; line-height: 1.3; }
.logo small { display: block; font-size: 12px; font-weight: 400; color: var(--muted); letter-spacing: 0; margin-top: 2px; }
.list-title { margin: 0 0 8px; font-size: 20px; font-weight: 700; line-height: 1.5; }
.meta-label { color: var(--muted); }
.search { display: flex; gap: 8px; }
.search input {
  width: 220px; padding: 8px 12px; font-size: 14px; color: var(--text);
  border: 1px solid var(--line); border-radius: 6px; background: #fafbfc; outline: none;
}
.search input:focus { border-color: var(--main); background: #fff; }
.search button {
  padding: 8px 18px; font-size: 14px; color: #fff; background: var(--main);
  border: 0; border-radius: 6px; cursor: pointer;
}
.search button:hover { opacity: .9; }

/* ---------- 两栏 ---------- */
.layout {
  display: grid; grid-template-columns: minmax(0, 1fr) 300px;
  gap: 24px; padding: 24px 0 40px; align-items: start;
}
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; }

/* ---------- 首页文章列表 ---------- */
.list { overflow: hidden; }
.post { padding: 20px 24px; border-bottom: 1px solid var(--line); }
.post:last-child { border-bottom: 0; }
.post h2 { margin: 0 0 8px; font-size: 18px; line-height: 1.5; font-weight: 600; }
.post h2 a { display: block; }
.post .meta { font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.post .meta .tag { color: var(--main); margin-left: 6px; }
.post .excerpt { margin: 0; font-size: 14px; color: #555; line-height: 1.8; }

.empty { padding: 48px 24px; text-align: center; color: var(--muted); font-size: 14px; }

/* ---------- 分页 ---------- */
.pager {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; align-items: center;
  padding: 20px 24px; border-top: 1px solid var(--line); font-size: 14px;
}
.pager a, .pager span {
  min-width: 34px; padding: 5px 10px; text-align: center;
  border: 1px solid var(--line); border-radius: 6px; color: #555; background: #fff;
}
.pager a:hover { border-color: var(--main); color: var(--main); }
.pager .on { background: var(--main); border-color: var(--main); color: #fff; }
.pager .info { border: 0; color: var(--muted); background: transparent; }

/* ---------- 侧栏 ---------- */
.side { display: grid; gap: 16px; }
.side h3 { margin: 0; padding: 14px 18px; font-size: 15px; border-bottom: 1px solid var(--line); }
.side .body { padding: 14px 18px; font-size: 14px; color: #555; }
.side .body p { margin: 0 0 8px; }
.side .body p:last-child { margin-bottom: 0; }
.tagcloud { display: flex; flex-wrap: wrap; gap: 8px; padding: 14px 18px; }
.tagcloud a { padding: 3px 10px; font-size: 13px; color: #555; background: #f4f5f7; border-radius: 999px; }
.tagcloud a:hover { background: var(--main); color: #fff; }
.tagcloud .n { color: var(--muted); font-size: 11px; margin-left: 4px; }

/* ---------- 页脚 ---------- */
.site-footer { padding: 24px 0 40px; text-align: center; color: var(--muted); font-size: 12px; line-height: 2; }
.site-footer a { color: var(--muted); }

/* ---------- 提示条 ---------- */
.notice {
  margin: 24px 0; padding: 16px 20px; background: #fff6f6;
  border: 1px solid #ffd9d9; color: #d93025; border-radius: 8px; font-size: 14px;
}

/* ---------- 文章详情页 ---------- */
.article { padding: 24px; }
.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 14px; line-height: 2; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--main); }
.breadcrumb em { font-style: normal; margin: 0 6px; color: #c8ccd4; }
.article h1 { margin: 0 0 12px; font-size: 24px; line-height: 1.5; font-weight: 700; }
.article-meta {
  font-size: 13px; color: var(--muted);
  padding-bottom: 16px; border-bottom: 1px solid var(--line); margin-bottom: 20px;
}
.article-meta a { color: var(--main); margin-right: 10px; }
.article-meta time { margin-right: 10px; }

.content { font-size: 16px; line-height: 1.9; color: #333; word-wrap: break-word; overflow-wrap: break-word; }
.content p { margin: 0 0 16px; }
.content img { max-width: 100%; height: auto; display: block; margin: 16px auto; }
.content h2 { font-size: 18px; margin: 24px 0 12px; }
.content h3 { font-size: 16px; margin: 20px 0 10px; }
.content ul, .content ol { padding-left: 22px; margin: 0 0 16px; }
.content li { margin-bottom: 6px; }
.content a { color: var(--main); }
.content blockquote {
  margin: 16px 0; padding: 10px 16px; border-left: 3px solid var(--line);
  background: #fafbfc; color: #666;
}
.content table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.content th, .content td { border: 1px solid var(--line); padding: 6px 8px; }
.content iframe { max-width: 100%; }

/* 上一篇 / 下一篇 */
.prevnext {
  display: grid; gap: 8px; margin-top: 26px; padding-top: 20px;
  border-top: 1px solid var(--line); font-size: 14px; color: var(--muted);
}
.prevnext a { color: var(--text); }
.prevnext a:hover { color: var(--main); }

/* 相关文章 */
.related { margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); }
.related h2 { font-size: 16px; margin: 0 0 12px; }
.related ul { margin: 0; padding-left: 20px; }
.related li { margin-bottom: 8px; font-size: 14px; }

/* 404 */
.nf { padding: 60px 24px; text-align: center; }
.nf h1 { font-size: 22px; margin: 0 0 12px; }
.nf p { color: var(--muted); font-size: 14px; margin: 0 0 20px; }
.nf a { color: var(--main); }

/* ---------- 手机 ---------- */
@media (max-width: 860px) {
  .layout { grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 16px 0 32px; }
  .site-header .inner { padding: 14px 0; }
  .logo { font-size: 19px; }
  .search { width: 100%; }
  .search input { flex: 1; width: auto; }
  .post { padding: 16px; }
  .post h2 { font-size: 17px; }
  .side h3, .side .body, .tagcloud { padding-left: 16px; padding-right: 16px; }
  .article { padding: 16px; }
  .article h1 { font-size: 20px; }
  .content { font-size: 16px; line-height: 1.85; }
  .pager { padding: 16px; }
}

/* ---------- 导航条（读取使用率最高的标签） ---------- */
.site-nav {
  border-top: 1px solid var(--line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.site-nav::-webkit-scrollbar { display: none; }
.site-nav .wrap { display: flex; align-items: center; gap: 2px; white-space: nowrap; }
.site-nav a {
  display: inline-block; padding: 11px 13px; font-size: 14px; color: #444;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--main); border-bottom-color: var(--main); }
.site-nav a.on { color: var(--main); border-bottom-color: var(--main); font-weight: 600; }
.site-nav .sep { color: #dfe2e8; padding: 0 2px; }

@media (max-width: 860px) {
  .site-nav a { padding: 10px 11px; font-size: 13px; }
}