/* ============================================================
   博客前台样式
   ============================================================ */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --bg-code: #f6f8fa;
  --surface: #ffffff;
  --border: #e5e7eb;
  --border-strong: #d5d9e0;
  --text: #1a1d21;
  --text-soft: #4b5563;
  --text-muted: #7a828e;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-soft: #eff4ff;
  --danger: #dc2626;
  --success: #16a34a;
  --warning: #d97706;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow: 0 4px 16px rgba(16, 24, 40, 0.07);
  --shadow-lg: 0 12px 32px rgba(16, 24, 40, 0.1);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono",
    "Courier New", monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------------- 头部 ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 68px;
}

.brand { display: flex; align-items: center; gap: 12px; color: var(--text); }
.brand:hover { color: var(--text); }
.brand-mark {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 11px;
  background: linear-gradient(135deg, #2563eb, #4f46e5);
  color: #fff; font-weight: 700; font-size: 18px;
  box-shadow: var(--shadow-sm);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 16.5px; letter-spacing: .2px; }
.brand-text small { font-size: 12px; color: var(--text-muted); }

.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav > a {
  padding: 7px 13px;
  border-radius: 8px;
  color: var(--text-soft);
  font-size: 14.5px;
  font-weight: 500;
}
.site-nav > a:hover { background: var(--bg-soft); color: var(--text); }
.site-nav > a.active { color: var(--primary); background: var(--primary-soft); }
.site-nav > a.nav-admin {
  border: 1px solid var(--border-strong);
  margin-left: 6px;
}
.site-nav > a.nav-space {
  color: var(--text-muted);
  font-size: 13.5px;
  border: 1px dashed var(--border-strong);
  margin-left: 6px;
}
.site-nav > a.nav-space:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-soft); }

.nav-search {
  position: relative;
  display: flex;
  align-items: center;
  margin-left: 8px;
}
.nav-search svg { position: absolute; left: 10px; color: var(--text-muted); pointer-events: none; }
.nav-search input {
  width: 168px;
  padding: 7px 12px 7px 32px;
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  font-size: 13.5px;
  font-family: inherit;
  background: var(--bg-soft);
  color: var(--text);
  outline: none;
  transition: width .2s ease, border-color .15s ease, background .15s ease;
}
.nav-search input:focus { width: 208px; background: #fff; border-color: var(--primary); }
.nav-search input::placeholder { color: var(--text-muted); }

.nav-toggle, .nav-burger { display: none; }

/* ---------------- 主体 ---------------- */
.site-main { min-height: calc(100vh - 300px); padding: 36px 0 60px; }

.layout-with-sidebar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 296px;
  gap: 36px;
  align-items: start;
}
.content-col { min-width: 0; }

/* ---------------- 提示条 ---------------- */
.flash-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 22px;
  border: 1px solid transparent;
}
.flash-success { background: #f0fdf4; border-color: #bbf7d0; color: #15803d; }
.flash-error { background: #fef2f2; border-color: #fecaca; color: #b91c1c; }
.flash-info { background: var(--primary-soft); border-color: #c7d7fe; color: var(--primary-dark); }

/* ---------------- 页面横幅 ---------------- */
.page-banner { padding: 12px 0 30px; }
.page-banner h1 { font-size: 28px; margin: 0 0 8px; letter-spacing: -.3px; }
.page-banner p { margin: 0; color: var(--text-muted); font-size: 14.5px; }

.search-form { display: flex; gap: 10px; max-width: 560px; margin-top: 16px; }
.search-form input {
  flex: 1;
  padding: 11px 16px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  outline: none;
  color: var(--text);
  background: #fff;
}
.search-form input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }
.search-result-tip { margin-top: 14px; font-size: 14px; }

/* ---------------- 文章卡片 ---------------- */
.post-list { display: flex; flex-direction: column; gap: 20px; }

.post-card {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.post-card:hover { border-color: #d3dae6; box-shadow: var(--shadow); transform: translateY(-2px); }

.post-card-cover {
  flex: 0 0 168px;
  height: 116px;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-soft);
}
.post-card-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.post-card-body { flex: 1; min-width: 0; }

.post-card-meta {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; color: var(--text-muted);
  flex-wrap: wrap;
}
.post-card-title { margin: 9px 0 8px; font-size: 19.5px; line-height: 1.45; letter-spacing: -.2px; }
.post-card-title a { color: var(--text); }
.post-card-title a:hover { color: var(--primary); }
.post-card-summary {
  margin: 0 0 14px;
  color: var(--text-soft);
  font-size: 14.5px;
  line-height: 1.72;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card-foot {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
}
.post-card-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.post-card-stats { font-size: 13px; color: var(--text-muted); display: flex; gap: 14px; }

/* 标签 / 徽标 */
.tag {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12.5px; color: var(--text-muted);
  padding: 2px 8px; border-radius: 6px; background: var(--bg-soft);
}
.tag:hover { color: var(--primary); background: var(--primary-soft); }
.tag i { font-style: normal; font-size: 11px; opacity: .7; }

.chip {
  display: inline-flex; align-items: center;
  padding: 2px 9px; border-radius: 20px;
  font-size: 12.5px; font-weight: 500; line-height: 1.7;
}
.chip-category { background: var(--primary-soft); color: var(--primary-dark); }
.chip-category:hover { background: #dfe8ff; }
.chip-top { background: #fff7ed; color: #c2410c; }
.chip-draft { background: #fef3c7; color: #b45309; }

/* ---------------- 侧边栏 ---------------- */
.sidebar { display: flex; flex-direction: column; gap: 18px; position: sticky; top: 92px; }

.widget {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.widget-title {
  margin: 0 0 14px;
  font-size: 14.5px;
  font-weight: 600;
  padding-left: 10px;
  border-left: 3px solid var(--primary);
  line-height: 1.2;
}
.widget-list { list-style: none; margin: 0; padding: 0; }
.widget-list li + li { border-top: 1px dashed var(--border); }
.widget-list a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 9px 0; font-size: 14px; color: var(--text-soft);
}
.widget-list a:hover { color: var(--primary); }
.widget-list em { font-style: normal; font-size: 12px; color: var(--text-muted); background: var(--bg-soft); padding: 1px 7px; border-radius: 10px; }

.widget-author { padding: 0; overflow: hidden; }
.author-card { padding: 22px 20px; text-align: center; background: linear-gradient(180deg, #f8faff, #fff); }
.author-avatar {
  width: 62px; height: 62px; border-radius: 50%; object-fit: cover;
  margin: 0 auto 12px; display: block; border: 2px solid #fff; box-shadow: var(--shadow-sm);
}
.author-avatar-placeholder {
  display: grid; place-items: center;
  background: linear-gradient(135deg, #2563eb, #4f46e5);
  color: #fff; font-size: 24px; font-weight: 700;
}
.author-card h4 { margin: 0 0 6px; font-size: 15.5px; }
.author-card p { margin: 0 0 12px; font-size: 13px; color: var(--text-muted); line-height: 1.65; }
.author-link { font-size: 13px; }

.widget-rank { list-style: none; margin: 0; padding: 0; counter-reset: rank; }
.widget-rank li { display: flex; gap: 10px; align-items: flex-start; padding: 7px 0; font-size: 14px; }
.widget-rank .rank-no {
  flex: 0 0 20px; height: 20px; border-radius: 6px;
  display: grid; place-items: center;
  font-size: 11.5px; font-weight: 600; color: var(--text-muted); background: var(--bg-soft);
  margin-top: 2px;
}
.widget-rank .rank-no.top { background: var(--primary); color: #fff; }
.widget-rank a { color: var(--text-soft); line-height: 1.5; }
.widget-rank a:hover { color: var(--primary); }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud .tag { font-size: 13px; }

.widget-comments { list-style: none; margin: 0; padding: 0; }
.widget-comments li + li { margin-top: 11px; padding-top: 11px; border-top: 1px dashed var(--border); }
.widget-comments a { display: block; }
.widget-comments strong { display: block; font-size: 13px; color: var(--primary); font-weight: 500; }
.widget-comments span { display: block; font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ---------------- 文章详情 ---------------- */
.post-article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 40px;
}
.article-header { margin-bottom: 28px; }
.article-meta-top { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.article-title {
  margin: 0 0 16px;
  font-size: 32px;
  line-height: 1.35;
  letter-spacing: -.6px;
  font-weight: 700;
}
.article-meta {
  display: flex; flex-wrap: wrap; gap: 18px;
  font-size: 13.5px; color: var(--text-muted);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.meta-item { display: inline-flex; align-items: center; gap: 5px; }
.article-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }

.article-cover { margin: 0 0 28px; border-radius: 10px; overflow: hidden; }
.article-cover img { display: block; width: 100%; }

.article-toc {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 26px;
  font-size: 14px;
}
.article-toc summary { cursor: pointer; font-weight: 600; color: var(--text-soft); outline: none; }
.article-toc ol { margin: 12px 0 0; padding-left: 22px; }
.article-toc li { margin: 5px 0; }
.article-toc a { color: var(--text-soft); }
.article-toc a:hover { color: var(--primary); }
.article-toc .toc-level-2 { padding-left: 6px; }
.article-toc .toc-level-3 { padding-left: 18px; font-size: 13.5px; }
.article-toc .toc-level-4 { padding-left: 30px; font-size: 13.5px; }

/* Markdown 正文 */
.markdown-body { font-size: 16.5px; line-height: 1.85; color: #23272e; word-wrap: break-word; }
.markdown-body h1, .markdown-body h2, .markdown-body h3, .markdown-body h4 {
  margin: 34px 0 14px; line-height: 1.4; font-weight: 650; letter-spacing: -.2px;
  scroll-margin-top: 90px;
}
.markdown-body h1 { font-size: 27px; }
.markdown-body h2 {
  font-size: 23px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.markdown-body h3 { font-size: 19.5px; }
.markdown-body h4 { font-size: 17px; }
.markdown-body p { margin: 0 0 17px; }
.markdown-body a { border-bottom: 1px solid rgba(37, 99, 235, .35); }
.markdown-body a:hover { border-bottom-color: var(--primary); }
.markdown-body ul, .markdown-body ol { margin: 0 0 18px; padding-left: 24px; }
.markdown-body li { margin: 6px 0; }
.markdown-body li > ul, .markdown-body li > ol { margin: 6px 0; }
.markdown-body blockquote {
  margin: 20px 0;
  padding: 12px 18px;
  border-left: 3px solid var(--primary);
  background: var(--primary-soft);
  border-radius: 0 8px 8px 0;
  color: var(--text-soft);
}
.markdown-body blockquote p:last-child { margin-bottom: 0; }
.markdown-body code {
  font-family: var(--font-mono);
  font-size: .88em;
  background: var(--bg-code);
  padding: 2px 6px;
  border-radius: 5px;
  color: #c7254e;
  border: 1px solid var(--border);
}
.markdown-body pre {
  margin: 20px 0;
  padding: 16px 18px;
  overflow-x: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-code);
  font-size: 14px;
  line-height: 1.65;
}
.markdown-body pre code {
  background: none; border: none; padding: 0; color: inherit;
  font-size: 14px;
}
.markdown-body table {
  width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 15px;
  display: block; overflow-x: auto;
}
.markdown-body th, .markdown-body td {
  border: 1px solid var(--border); padding: 9px 14px; text-align: left;
}
.markdown-body th { background: var(--bg-soft); font-weight: 600; }
.markdown-body tbody tr:nth-child(even) { background: #fafbfc; }
.markdown-body img { border-radius: 8px; margin: 8px 0; }
.markdown-body hr { border: none; border-top: 1px solid var(--border); margin: 32px 0; }
.markdown-body .header-anchor {
  color: var(--text-muted); opacity: 0; margin-right: 6px;
  text-decoration: none; border: none; font-weight: 400;
}
.markdown-body h1:hover .header-anchor,
.markdown-body h2:hover .header-anchor,
.markdown-body h3:hover .header-anchor,
.markdown-body h4:hover .header-anchor { opacity: .5; }

/* 点赞 */
.article-actions { display: flex; justify-content: center; margin: 36px 0 8px; }
.like-btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 10px 26px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: #fff;
  cursor: pointer;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--text-soft);
  transition: all .18s ease;
}
.like-btn:hover { border-color: #fca5a5; color: #e11d48; background: #fff1f2; }
.like-btn.liked { border-color: #fca5a5; color: #e11d48; background: #fff1f2; }
.like-icon { font-size: 16px; }
.like-count { color: var(--text-muted); font-size: 13.5px; }
.like-btn.liked .like-count { color: #e11d48; }

/* 上下篇 */
.article-nav {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  margin: 30px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.article-nav a {
  display: flex; flex-direction: column; gap: 5px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.5;
  transition: all .18s ease;
}
.article-nav a:hover { border-color: var(--primary); background: var(--primary-soft); }
.article-nav small { color: var(--text-muted); font-size: 12.5px; }
.article-nav .nav-next { text-align: right; }

/* 相关文章 */
.related-block, .comments-block { margin-top: 34px; }
.block-title {
  font-size: 17px; margin: 0 0 16px;
  padding-left: 11px; border-left: 3px solid var(--primary);
  line-height: 1.2;
  display: flex; align-items: center; gap: 8px;
}
.count-badge {
  font-size: 12px; font-weight: 500; color: var(--primary);
  background: var(--primary-soft); padding: 1px 8px; border-radius: 10px;
  border-left: none;
}
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.related-card {
  display: flex; flex-direction: column; gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font-size: 14.5px;
  line-height: 1.55;
  transition: all .18s ease;
}
.related-card:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.related-card img { width: 100%; height: 96px; object-fit: cover; border-radius: 7px; margin-bottom: 4px; }
.related-card small { color: var(--text-muted); font-size: 12.5px; }

/* ---------------- 评论 ---------------- */
.comment-list { list-style: none; margin: 0; padding: 0; }
.comment {
  display: flex; gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.comment-avatar {
  flex: 0 0 38px; width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center;
  background: linear-gradient(135deg, #dbeafe, #e0e7ff);
  color: var(--primary-dark); font-weight: 600; font-size: 15px;
}
.comment-main { flex: 1; min-width: 0; }
.comment-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.comment-name { font-size: 14.5px; font-weight: 600; color: var(--text); }
.comment-time { font-size: 12.5px; color: var(--text-muted); }
.comment-reply-btn {
  border: none; background: none; padding: 0; cursor: pointer;
  font-size: 12.5px; color: var(--text-muted); font-family: inherit;
}
.comment-reply-btn:hover { color: var(--primary); text-decoration: underline; }
.comment-content { margin-top: 5px; font-size: 14.8px; color: var(--text-soft); line-height: 1.72; word-wrap: break-word; }
.comment-children {
  list-style: none; margin: 12px 0 0; padding: 0 0 0 14px;
  border-left: 2px solid var(--border);
}
.comment-children .comment { border-bottom: none; padding: 10px 0 0; }
.comment-empty, .comment-closed {
  color: var(--text-muted); font-size: 14px; padding: 18px 0;
  text-align: center; background: var(--bg-soft); border-radius: 10px;
}

.comment-form {
  margin-top: 26px;
  padding: 22px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.comment-form h4 { margin: 0 0 16px; font-size: 15.5px; }
.form-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.form-group label { font-size: 13.5px; color: var(--text-soft); font-weight: 500; }
.required { color: var(--danger); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 9px 13px;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  font-size: 14.5px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}
.form-group textarea { resize: vertical; line-height: 1.7; }
.comment-form-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.reply-hint { font-size: 13px; color: var(--primary); }
.reply-hint a { margin-left: 8px; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 18px;
  border-radius: 9px;
  border: 1px solid var(--border-strong);
  background: #fff;
  color: var(--text);
  font-size: 14.5px;
  font-family: inherit;
  cursor: pointer;
  transition: all .16s ease;
  white-space: nowrap;
}
.btn:hover { border-color: #b9c0cc; background: var(--bg-soft); color: var(--text); }
.btn-primary {
  background: var(--primary); border-color: var(--primary); color: #fff;
  box-shadow: 0 1px 2px rgba(37, 99, 235, .3);
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 13px; border-radius: 7px; }

/* ---------------- 归档 ---------------- */
.archive-back { margin: 0 0 16px; font-size: 14px; }
.timeline { position: relative; padding-left: 6px; }
.timeline-group {
  position: relative;
  padding: 0 0 8px 22px;
  border-left: 2px solid var(--border);
}
.timeline-group:last-child { border-left-color: transparent; }
.timeline-group::before {
  content: '';
  position: absolute; left: -7px; top: 8px;
  width: 12px; height: 12px; border-radius: 50%;
  background: #fff; border: 2.5px solid var(--primary);
}
.timeline-year {
  margin: 0 0 4px; font-size: 18px;
  display: flex; align-items: center; gap: 10px;
}
.timeline-year small { font-size: 14px; color: var(--text-muted); font-weight: 400; }
.timeline-count { font-size: 12.5px; color: var(--text-muted); background: var(--bg-soft); padding: 1px 9px; border-radius: 10px; margin-left: auto; }
.timeline-link { font-size: 13.5px; display: inline-block; margin-bottom: 22px; }

.archive-month {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 22px;
}
.archive-item {
  display: flex; align-items: center; gap: 14px;
  padding: 13px 0; border-bottom: 1px dashed var(--border);
  font-size: 15px;
}
.archive-item:last-child { border-bottom: none; }
.archive-item time { flex: 0 0 52px; color: var(--text-muted); font-size: 13.5px; font-family: var(--font-mono); }
.archive-item a { color: var(--text); flex: 1; min-width: 0; }
.archive-item a:hover { color: var(--primary); }
.archive-item em { font-style: normal; font-size: 12.5px; color: var(--text-muted); }

/* ---------------- 友链 ---------------- */
.link-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.link-card {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: all .18s ease;
}
.link-card:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.link-logo {
  flex: 0 0 46px; width: 46px; height: 46px; border-radius: 11px;
  display: grid; place-items: center; overflow: hidden;
  background: var(--primary-soft); color: var(--primary-dark);
  font-weight: 700; font-size: 19px;
}
.link-logo img { width: 100%; height: 100%; object-fit: cover; }
.link-body { min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.link-body strong { font-size: 15px; }
.link-body span { font-size: 13px; color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------------- 关于 ---------------- */
.about-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 34px 38px;
}
.about-head { display: flex; align-items: center; gap: 20px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.about-avatar { width: 76px; height: 76px; border-radius: 50%; object-fit: cover; flex: 0 0 76px; }
.about-avatar-placeholder {
  display: grid; place-items: center;
  background: linear-gradient(135deg, #2563eb, #4f46e5);
  color: #fff; font-size: 30px; font-weight: 700;
}
.about-head h2 { margin: 0 0 6px; font-size: 21px; }
.about-bio { margin: 0; color: var(--text-muted); font-size: 14.5px; }
.about-section { margin-top: 26px; }
.about-section h3 { font-size: 16px; margin: 0 0 10px; }
.about-section p { margin: 0 0 10px; color: var(--text-soft); font-size: 15px; }
.about-stack { display: flex; flex-wrap: wrap; gap: 9px; }
.stack-item {
  font-size: 13.5px; padding: 4px 12px; border-radius: 20px;
  background: var(--primary-soft); color: var(--primary-dark);
}
.about-contact { list-style: none; margin: 0; padding: 0; font-size: 14.5px; color: var(--text-soft); }
.about-contact li { padding: 5px 0; }

/* ---------------- 空状态 / 状态页 ---------------- */
.empty-state { text-align: center; padding: 70px 20px; }
.empty-icon { font-size: 46px; color: var(--border-strong); margin-bottom: 10px; }
.empty-state h3 { margin: 0 0 8px; font-size: 18px; }
.empty-state p { color: var(--text-muted); margin: 0 0 20px; font-size: 14.5px; }

.status-page { text-align: center; padding: 90px 20px; }
.status-code {
  font-size: 84px; font-weight: 800; letter-spacing: -4px;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  line-height: 1;
}
.status-page h1 { margin: 18px 0 10px; font-size: 24px; }
.status-page p { color: var(--text-muted); margin: 0 0 26px; }
.status-actions { display: flex; gap: 12px; justify-content: center; }

/* ---------------- 分页 ---------------- */
.pagination {
  display: flex; align-items: center; justify-content: center;
  gap: 6px; flex-wrap: wrap; margin-top: 34px;
}
.page-link {
  min-width: 38px; height: 38px; padding: 0 13px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: #fff;
  color: var(--text-soft);
  font-size: 14px;
  transition: all .15s ease;
}
.page-link:hover { border-color: var(--primary); color: var(--primary); }
.page-link.current {
  background: var(--primary); border-color: var(--primary);
  color: #fff; font-weight: 600;
}
.page-link.disabled { color: #c3c9d4; cursor: not-allowed; }
.page-link.disabled:hover { border-color: var(--border); color: #c3c9d4; }
.page-ellipsis { padding: 0 4px; color: var(--text-muted); }

/* ---------------- 页脚 ---------------- */
.site-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  padding: 44px 0 24px;
  margin-top: 20px;
}
.footer-inner { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; }
.footer-about h3 { margin: 0 0 10px; font-size: 17px; }
.footer-about p { margin: 0 0 14px; color: var(--text-muted); font-size: 14px; max-width: 420px; line-height: 1.7; }
.footer-social { display: flex; gap: 16px; font-size: 14px; }
.footer-links { display: flex; flex-direction: column; gap: 9px; }
.footer-links h4 { margin: 0 0 4px; font-size: 14.5px; }
.footer-links a { color: var(--text-muted); font-size: 14px; }
.footer-links a:hover { color: var(--primary); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  gap: 14px; flex-wrap: wrap;
  margin-top: 34px; padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--text-muted); font-size: 13px;
}
.footer-bottom .beian:hover { color: var(--primary); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 980px) {
  .layout-with-sidebar { grid-template-columns: 1fr; gap: 28px; }
  .sidebar { position: static; }
  .post-article { padding: 26px 22px; }
  .article-title { font-size: 26px; }
}

@media (max-width: 760px) {
  .container { padding: 0 18px; }
  .nav-burger {
    display: flex; flex-direction: column; justify-content: center; gap: 4px;
    width: 40px; height: 40px; padding: 0 9px; cursor: pointer;
    border: 1px solid var(--border); border-radius: 9px;
  }
  .nav-burger span { display: block; height: 2px; background: var(--text-soft); border-radius: 2px; }
  .nav-toggle:checked ~ .nav-burger span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-burger span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .site-nav {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: #fff; border-bottom: 1px solid var(--border);
    padding: 12px 18px 18px;
    box-shadow: var(--shadow);
    display: none;
  }
  .nav-toggle:checked ~ .site-nav { display: flex; }
  .site-nav > a { padding: 11px 12px; }
  .nav-search { margin: 8px 0 0; }
  .nav-search input, .nav-search input:focus { width: 100%; }

  .post-card { flex-direction: column; gap: 14px; padding: 20px; }
  .post-card-cover { flex: none; width: 100%; height: 168px; }
  .post-card-title { font-size: 18px; }

  .form-row { grid-template-columns: 1fr; }
  .related-grid, .link-grid { grid-template-columns: 1fr; }
  .article-nav { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 26px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .about-card { padding: 24px 20px; }
  .about-head { flex-direction: column; text-align: center; }
}

/* 打印 */
@media print {
  .site-header, .sidebar, .site-footer, .article-actions, .comment-form, .article-nav { display: none; }
  .post-article { border: none; padding: 0; }
}