:root {
  --color-primary: #475569;
  --color-on-primary: #ffffff;
  --color-secondary: #64748b;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-fg: #1e293b;
  --color-fg-soft: #475569;
  --color-muted: #eaeff3;
  --color-border: #e2e8f0;
  --color-danger: #dc2626;
  --color-danger-soft: #fef2f2;
  --color-success: #16a34a;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.14);
  --space: 16px;
  --maxw: 1120px;
}

/* ============ 深色模式 ============ */
[data-theme="dark"] {
  --color-primary: #cbd5e1;
  --color-on-primary: #0f172a;
  --color-secondary: #94a3b8;
  --color-accent: #3b82f6;
  --color-accent-hover: #60a5fa;
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-fg: #e2e8f0;
  --color-fg-soft: #cbd5e1;
  --color-muted: #334155;
  --color-border: #334155;
  --color-danger: #f87171;
  --color-danger-soft: #3b1d1d;
  --color-success: #4ade80;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* 主题切换按钮 */
.theme-toggle { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border: 1px solid var(--color-border); border-radius: 50%; background: var(--color-surface); color: var(--color-fg-soft); cursor: pointer; transition: border-color .15s, color .15s, background-color .15s; }
.theme-toggle:hover { color: var(--color-accent); border-color: var(--color-accent); }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: inline; }

/* ============ 文章正文排版（同时服务 Markdown 渲染） ============ */
.article-content h2 { font-size: 1.4rem; font-weight: 700; margin: 28px 0 12px; line-height: 1.4; color: var(--color-fg); }
.article-content h3 { font-size: 1.18rem; font-weight: 700; margin: 22px 0 10px; color: var(--color-fg); }
.article-content p { margin: 0 0 16px; }
.article-content ul, .article-content ol { margin: 0 0 16px; padding-left: 1.5em; }
.article-content li { margin: 6px 0; }
.article-content a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 2px; }
.article-content img { max-width: 100%; height: auto; border-radius: var(--radius-sm); margin: 8px 0; border: 1px solid var(--color-border); }
.article-content code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9em; background: var(--color-muted); padding: 2px 6px; border-radius: 4px; }
.article-content pre { background: var(--color-muted); border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 14px 16px; overflow-x: auto; margin: 0 0 16px; }
.article-content pre code { background: none; padding: 0; }
.article-content blockquote { margin: 0 0 16px; padding: 10px 16px; border-left: 3px solid var(--color-accent); background: var(--color-muted); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--color-fg-soft); }
.article-content table { width: 100%; border-collapse: collapse; margin: 0 0 16px; font-size: 14.5px; }
.article-content th, .article-content td { border: 1px solid var(--color-border); padding: 8px 12px; text-align: left; }
.article-content th { background: var(--color-muted); font-weight: 600; }
.article-content hr { border: none; border-top: 1px solid var(--color-border); margin: 24px 0; }

/* 上一篇 / 下一篇 */
.article-nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 28px; padding-top: 22px; border-top: 1px solid var(--color-border); }
.article-nav a { flex: 1; min-width: 0; font-size: 14px; color: var(--color-fg-soft); text-decoration: none; padding: 10px 14px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); transition: border-color .15s, color .15s; }
.article-nav a:hover { border-color: var(--color-accent); color: var(--color-accent); }
.article-nav .nav-next { text-align: right; }
.article-nav .nav-label { display: block; font-size: 12px; color: var(--color-secondary); margin-bottom: 2px; }
.article-nav .nav-title { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 首页：最近更新 */
.recent-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.recent-list a { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; padding: 12px 14px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); text-decoration: none; color: var(--color-fg); transition: border-color .15s, color .15s; }
.recent-list a:hover { border-color: var(--color-accent); color: var(--color-accent); }
.recent-list .r-title { font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.recent-list .r-date { font-size: 12.5px; color: var(--color-secondary); white-space: nowrap; }

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--color-fg);
  background: var(--color-bg);
  line-height: 1.6;
  font-size: 16px;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
mark { background: #fde68a; color: #92400e; padding: 0 2px; border-radius: 3px; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font: inherit; font-weight: 600; font-size: 14px;
  padding: 10px 18px; border-radius: var(--radius-sm);
  border: 1px solid transparent; cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .05s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-hover); }
.btn-ghost { background: transparent; color: var(--color-fg-soft); border-color: var(--color-border); }
.btn-ghost:hover { background: var(--color-muted); }
.btn-sm { padding: 5px 10px; font-size: 13px; line-height: 1.2; }
.btn-block { width: 100%; }

/* 页脚 Markdown 自由编辑框（后台设置） */
.setting-textarea {
  display: block; width: 100%; max-width: 720px; min-height: 120px; resize: vertical;
  padding: 12px 14px; font: inherit; font-size: 14px; line-height: 1.6; font-weight: 500;
  border: 1px solid var(--color-border); border-radius: var(--radius); background: var(--color-surface); color: var(--color-fg);
  outline: none; transition: border-color .15s, box-shadow .15s, background .15s;
}
.setting-textarea:focus { border-color: var(--color-accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-accent) 18%, transparent); background: color-mix(in srgb, var(--color-accent) 3%, var(--color-surface)); }
.setting-textarea::placeholder { color: var(--color-secondary); }
.preview-wrap { margin-top: 14px; }
.preview-label { font-size: 12.5px; color: var(--color-fg-soft); margin-bottom: 6px; }
.footer-preview {
  border: 1px dashed var(--color-border); border-radius: var(--radius); background: color-mix(in srgb, var(--color-fg) 3%, var(--color-surface));
  padding: 12px 14px; font-size: 13.5px; color: var(--color-fg); min-height: 24px;
}
.footer-preview p:first-child { margin-top: 0; }
.footer-preview p:last-child { margin-bottom: 0; }
.footer-preview a { color: var(--color-accent); text-decoration: none; border-bottom: 1px solid var(--color-border); }
.footer-preview a:hover { border-bottom-color: var(--color-accent); }
.footer-preview code { background: color-mix(in srgb, var(--color-fg) 8%, transparent); padding: 1px 5px; border-radius: 4px; font-size: 12.5px; }
.footer-preview ul, .footer-preview ol { margin: 6px 0; padding-left: 22px; }

.tag {
  display: inline-block; font-size: 12px; font-weight: 500;
  padding: 2px 10px; border-radius: 999px; line-height: 1.6;
}
.tag-brand { background: #eff6ff; color: #1d4ed8; }
.tag-cat { background: #f0fdf4; color: #15803d; }
.tag-tag { background: #fef3c7; color: #b45309; }

.link { background: none; border: none; padding: 0; font: inherit; color: var(--color-accent); cursor: pointer; font-weight: 500; }
.link:hover { text-decoration: underline; }
.link-danger { color: var(--color-danger); }

/* ============ 站点头部 ============ */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
[data-theme="dark"] .site-header {
  background: rgba(15, 23, 42, 0.92);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}
[data-theme="dark"] .brand-logo { color: #ffffff; }
[data-theme="dark"] .brand-logo svg { color: #60a5fa; }
[data-theme="dark"] .header-admin-link { color: #e2e8f0; }
[data-theme="dark"] .header-admin-link:hover { color: #ffffff; }
/* 下滑时导航栏加阴影，回到顶部则移除 */
.site-header.scrolled { box-shadow: 0 6px 20px rgba(15, 23, 42, 0.10); }
[data-theme="dark"] .site-header.scrolled { box-shadow: 0 6px 20px rgba(0, 0, 0, 0.45); }
.header-inner { display: flex; align-items: center; gap: 20px; height: 64px; }
.brand-logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; color: var(--color-fg); flex-shrink: 0; }
.brand-logo svg { color: var(--color-accent); }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.header-search { display: flex; flex: 0 1 320px; min-width: 0; width: min(320px, 46vw); }
/* 搜索框为空/纯空格被拦截时的视觉提示 */
.search-empty { border-color: var(--color-danger) !important; box-shadow: 0 0 0 3px rgba(239, 68, 68, .15) !important; }
.header-search input {
  flex: 1; height: 40px; border: 1px solid var(--color-border); border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm); padding: 0 14px; font: inherit; font-size: 14px;
  outline: none; background: var(--color-surface);
}
.header-search input:focus { border-color: var(--color-accent); }
.header-search button {
  width: 46px; border: 1px solid var(--color-accent); background: var(--color-accent); color: #fff;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0; cursor: pointer; display: flex; align-items: center; justify-content: center;
}
.header-search button:hover { background: var(--color-accent-hover); }
.header-admin-link { margin-left: auto; color: var(--color-fg-soft); font-size: 14px; font-weight: 500; flex-shrink: 0; }
.header-admin-link:hover { color: var(--color-accent); }

/* ============ 首页 Hero ============ */
.home-body { min-height: 100dvh; display: flex; flex-direction: column; overflow-x: hidden; }
.home-top-actions { position: absolute; top: 18px; right: 28px; display: flex; align-items: center; gap: 12px; z-index: 5; }
.home-admin-link { color: var(--color-fg-soft); font-size: 14px; font-weight: 500; }
.home-admin-link:hover { color: var(--color-accent); }
.home-theme-toggle { width: 36px; height: 36px; }
.home-hero { flex: 1; display: flex; align-items: center; justify-content: center; padding: 40px 20px 80px; }
.hero-inner { width: 100%; max-width: 720px; text-align: center; }
.hero-title { font-size: clamp(2.8rem, 9vw, 5rem); font-weight: 800; letter-spacing: -0.04em; margin: 0 0 12px; color: var(--color-fg); }
.hero-subtitle { font-size: clamp(1rem, 2.5vw, 1.25rem); color: var(--color-secondary); margin: 0 0 36px; }
.hero-search { position: relative; display: flex; align-items: center; box-shadow: var(--shadow); border-radius: 999px; background: var(--color-surface); border: 1px solid var(--color-border); transition: box-shadow .2s, border-color .2s; }
.hero-search:focus-within { box-shadow: var(--shadow-lg); border-color: var(--color-accent); }
.hero-search-icon { position: absolute; left: 22px; color: var(--color-secondary); pointer-events: none; }
.hero-search input { flex: 1; height: 60px; border: none; background: transparent; padding: 0 20px 0 56px; font: inherit; font-size: 17px; outline: none; border-radius: 999px; }
.hero-search button { height: 48px; margin-right: 6px; padding: 0 28px; border: none; background: var(--color-accent); color: #fff; font: inherit; font-weight: 600; font-size: 16px; border-radius: 999px; cursor: pointer; transition: background .18s; }
.hero-search button:hover { background: var(--color-accent-hover); }
.hero-stats { margin-top: 20px; color: var(--color-secondary); font-size: 14px; display: flex; gap: 10px; justify-content: center; align-items: center; }
.hero-stats strong { color: var(--color-fg); }
.hero-stats .dot { color: var(--color-border); }
.hero-section { margin-top: 44px; text-align: left; }
.hero-section-title { font-size: 14px; font-weight: 600; color: var(--color-secondary); text-transform: uppercase; letter-spacing: .05em; margin: 0 0 14px; text-align: center; }
/* 原来那种：品牌按钮文字单行，整体居中自动换行 */
.brand-grid { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.brand-grid.brand-mode-1 { flex-wrap: nowrap; justify-content: center; width: 100vw; margin-inline: calc(50% - 50vw); padding-inline: max(20px, calc((100vw - 720px) / 2)); }
.brand-grid.brand-mode-2 { max-height: 120px; overflow-y: auto; scrollbar-width: thin; padding-top: 2px; padding-bottom: 2px; }
.brand-chip { display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 999px; font-size: 14px; font-weight: 500; white-space: nowrap; transition: border-color .18s, box-shadow .18s, transform .12s; }
.brand-chip:hover { border-color: var(--color-accent); box-shadow: var(--shadow-sm); transform: translateY(-1px); }
.brand-chip img { width: 22px; height: 22px; object-fit: contain; border-radius: 4px; }
.cat-chip-row { display: flex; flex-wrap: wrap; gap: 10px; }
.cat-chip { padding: 8px 16px; background: var(--color-muted); border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--color-fg-soft); transition: background .18s, color .18s; }
.cat-chip:hover { background: var(--color-accent); color: #fff; }

/* ============ 搜索结果页 ============ */
.search-layout { display: grid; grid-template-columns: 260px 1fr; gap: 32px; padding-top: 32px; padding-bottom: 60px; align-items: start; }
.search-sidebar { position: sticky; top: 88px; }
.filter-block { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 18px; margin-bottom: 18px; }
.filter-title { font-size: 13px; font-weight: 700; color: var(--color-secondary); text-transform: uppercase; letter-spacing: .05em; margin: 0 0 12px; }
.filter-list { list-style: none; margin: 0; padding: 0; }
.filter-link { display: block; padding: 7px 10px; border-radius: var(--radius-sm); font-size: 14px; color: var(--color-fg-soft); transition: background .15s, color .15s; }
.filter-link:hover { background: var(--color-muted); }
.filter-link.active { background: #eff6ff; color: var(--color-accent); font-weight: 600; }
.cat-tree { list-style: none; margin: 4px 0 0; padding-left: 12px; }
.filter-cat > .cat-tree { padding-left: 0; }
.cat-link { display: block; padding: 6px 10px; border-radius: var(--radius-sm); font-size: 14px; color: var(--color-fg-soft); transition: background .15s, color .15s; }
.cat-link:hover { background: var(--color-muted); }
.cat-link.active { color: var(--color-accent); font-weight: 600; }

.results-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 20px; gap: 12px; flex-wrap: wrap; }
.results-title { font-size: 22px; font-weight: 700; margin: 0; }
.results-count { color: var(--color-secondary); font-size: 14px; }
/* 瀑布流（masonry）：多列等高卡片，按内容高度自然错落 */
.masonry { column-count: 3; column-gap: 18px; margin-top: 4px; }
.masonry .card { break-inside: avoid; margin: 0 0 18px; }
.card { position: relative; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); transition: border-color .18s, box-shadow .18s, transform .12s; }
.card:hover { border-color: var(--color-accent); box-shadow: var(--shadow); transform: translateY(-2px); }
.card-body { padding: 18px 20px; }
.card-title-link { display: block; text-decoration: none; color: inherit; }
.card-title { font-size: 16.5px; font-weight: 600; margin: 0 0 8px; color: var(--color-fg); line-height: 1.45; }
.card-title-link:hover .card-title { color: var(--color-accent); }
/* 整张卡片可点击进入详情；内部标签/链接层级更高，点击标签仍跳转筛选 */
.card-hit { position: absolute; inset: 0; z-index: 1; }
.card-title-link, .card-cover-link, .card-meta .tag { position: relative; z-index: 2; }
.card-meta .tag { text-decoration: none; }
.tag:hover { border-color: var(--color-accent); color: var(--color-accent); }
.card-excerpt { margin: 0 0 12px; color: var(--color-fg-soft); font-size: 14px; line-height: 1.7; }
.card-meta { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.card-time { color: var(--color-secondary); font-size: 12.5px; }
.card-author { color: var(--color-fg); font-weight: 600; }
.card-cover-link { display: block; overflow: hidden; border-radius: var(--radius) var(--radius) 0 0; }
.card-cover { width: 100%; height: 160px; object-fit: cover; display: block; transition: transform .25s; }
.card:hover .card-cover { transform: scale(1.04); }
@media (max-width: 1100px) { .masonry { column-count: 2; } }
@media (max-width: 600px) { .masonry { column-count: 1; } }

/* 列表模式：一行一个（单列完整宽度卡片） */
.alist { display: flex; flex-direction: column; gap: 14px; margin-top: 4px; }
.alist .card { width: 100%; margin: 0; break-inside: auto; display: flex; align-items: stretch; }
.alist .card-cover-link { flex: 0 0 220px; border-radius: var(--radius) 0 0 var(--radius); }
.alist .card-cover { height: 100%; min-height: 150px; }
.alist .card-body { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.alist .card-excerpt { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
@media (max-width: 600px) {
  .alist .card { flex-direction: column; }
  .alist .card-cover-link { flex-basis: auto; border-radius: var(--radius) var(--radius) 0 0; }
  .alist .card-cover { height: 160px; }
  .alist .card-excerpt { -webkit-line-clamp: 2; }
}

/* 结果头：排序切换 + 计数 */
.results-head-right { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.sort-toggle { display: inline-flex; border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.sort-btn { font-size: 13px; padding: 5px 12px; color: var(--color-fg-soft); text-decoration: none; background: var(--color-surface); transition: background-color .15s, color .15s; }
.sort-btn + .sort-btn { border-left: 1px solid var(--color-border); }
.sort-btn.active { background: var(--color-accent); color: #fff; }
.sort-btn:not(.active):hover { color: var(--color-accent); }
@media (max-width: 600px) { .results-head { flex-direction: column; align-items: flex-start; gap: 8px; } }

/* 无限滚动：加载状态 / 到底提示 / 哨兵 */
.load-status { display: flex; align-items: center; justify-content: center; gap: 10px; padding: 22px 0 8px; color: var(--color-secondary); font-size: 14px; }
.load-status[hidden] { display: none; }
.load-status .spinner { width: 18px; height: 18px; border: 2px solid var(--color-border); border-top-color: var(--color-accent); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.load-end { text-align: center; padding: 22px 0 8px; color: var(--color-secondary); font-size: 13.5px; }
.load-end[hidden] { display: none; }
.sentinel { height: 1px; }

/* 后台设置页 */
.settings-form { margin-top: 6px; }
.setting-row { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; padding: 14px 0; border-bottom: 1px solid var(--color-border); }
.setting-row:last-of-type { border-bottom: none; }
.setting-info { flex: 0 0 240px; min-width: 220px; }
.setting-label { display: block; font-weight: 600; font-size: 15px; color: var(--color-fg); }
.setting-desc { display: block; margin-top: 4px; color: var(--color-fg-soft); font-size: 13px; line-height: 1.6; }
.setting-control { flex: 1 1 360px; display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.radio-card { position: relative; display: flex; flex-direction: column; gap: 4px; padding: 14px 16px; border: 1px solid var(--color-border); border-radius: var(--radius); cursor: pointer; flex: 1 1 180px; min-width: 150px; background: var(--color-surface); transition: border-color .15s, box-shadow .15s, background .15s; }
.radio-card input { position: absolute; opacity: 0; pointer-events: none; }
.radio-card.selected { border-color: var(--color-accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-accent) 18%, transparent); background: color-mix(in srgb, var(--color-accent) 6%, var(--color-surface)); }
.radio-title { font-weight: 600; font-size: 14.5px; color: var(--color-fg); }
.radio-desc { font-size: 12.5px; color: var(--color-fg-soft); }
.setting-input {
  height: 44px; padding: 0 16px; font: inherit; font-size: 14.5px; font-weight: 500;
  border: 1px solid var(--color-border); border-radius: var(--radius); background: var(--color-surface); color: var(--color-fg);
  outline: none; transition: border-color .15s, box-shadow .15s, background .15s;
}
.setting-input:focus { border-color: var(--color-accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-accent) 18%, transparent); background: color-mix(in srgb, var(--color-accent) 3%, var(--color-surface)); }
.setting-input::placeholder { color: var(--color-secondary); }
input.setting-input[type="number"] { width: 120px; text-align: center; }
input.setting-input[type="text"] { width: 100%; max-width: 420px; }

/* 暗色主题下的设置项 */
[data-theme="dark"] .setting-row { border-color: var(--color-border); }
[data-theme="dark"] .radio-card { background: var(--color-surface); }

/* 开关切换（用于首页板块开关） */
.toggle-switch { position: relative; display: inline-flex; align-items: center; gap: 12px; cursor: pointer; }
.toggle-switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.switch-slider { position: relative; width: 48px; height: 26px; background: var(--color-border); border-radius: 999px; transition: background .18s ease; }
.switch-slider::before { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; background: #fff; border-radius: 50%; transition: transform .18s ease; }
.toggle-switch input:checked + .switch-slider { background: var(--color-accent); }
.toggle-switch input:checked + .switch-slider::before { transform: translateX(22px); }
.toggle-switch input:focus + .switch-slider { box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }
.switch-state { font-size: 14px; font-weight: 500; color: var(--color-fg); min-width: 48px; }

.empty-state { text-align: center; padding: 70px 20px; color: var(--color-secondary); background: var(--color-surface); border: 1px dashed var(--color-border); border-radius: var(--radius); }
.empty-state svg { color: #cbd5e1; margin-bottom: 12px; }
.empty-state p { font-size: 17px; font-weight: 600; color: var(--color-fg-soft); margin: 0 0 4px; }
.empty-state span { font-size: 14px; }

/* ============ 文章详情 ============ */
.article-layout { display: grid; grid-template-columns: 1fr 280px; gap: 40px; padding-top: 32px; padding-bottom: 60px; align-items: start; }
.article-main { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 36px 40px; }
.breadcrumb { font-size: 13px; color: var(--color-secondary); margin-bottom: 16px; display: flex; gap: 8px; flex-wrap: wrap; }
.breadcrumb a:hover { color: var(--color-accent); }
.article-title { font-size: clamp(1.6rem, 4vw, 2.2rem); font-weight: 800; letter-spacing: -0.02em; margin: 0 0 16px; line-height: 1.25; }
.article-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding-bottom: 22px; margin-bottom: 26px; border-bottom: 1px solid var(--color-border); }
.article-cover { width: 100%; max-height: 420px; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--color-border); margin-bottom: 28px; }
.article-content { font-size: 16.5px; line-height: 1.9; color: var(--color-fg); }
[data-theme="dark"] .article-content { color: #ffffff; }
[data-theme="dark"] .article-content blockquote { color: #e2e8f0; }
.article-side { position: sticky; top: 88px; }
.side-block { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.side-title { font-size: 14px; font-weight: 700; color: var(--color-secondary); text-transform: uppercase; letter-spacing: .05em; margin: 0 0 14px; }
.side-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.side-list a { font-size: 14.5px; color: var(--color-fg-soft); transition: color .15s; }
.side-list a:hover { color: var(--color-accent); }
.side-empty { color: var(--color-secondary); font-size: 14px; margin: 0; }
.back-link { font-size: 14px; color: var(--color-accent); font-weight: 500; }
.back-link:hover { text-decoration: underline; }

/* ============ 站点底部 ============ */
.site-footer { border-top: 1px solid var(--color-border); background: var(--color-surface); padding: 24px 0; margin-top: auto; }
.site-footer .container { text-align: center; }
.site-footer p { color: var(--color-secondary); font-size: 13.5px; margin: 0 0 6px; }
.site-footer p:last-child { margin-bottom: 0; }
.site-footer a { color: var(--color-secondary); text-decoration: none; border-bottom: 1px solid var(--color-border); }
.site-footer a:hover { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.site-footer ul, .site-footer ol { list-style: none; padding: 0; margin: 4px 0; }
.site-footer li { display: inline-block; color: var(--color-secondary); font-size: 13.5px; }
.site-footer li:not(:last-child)::after { content: " · "; opacity: .6; }
.site-footer code { background: color-mix(in srgb, var(--color-fg) 8%, transparent); padding: 1px 5px; border-radius: 4px; font-size: 12.5px; }

/* 全局返回顶部按钮：下滑超过两屏后浮现 */
.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-accent);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .14);
  z-index: 60;
  transition: opacity .2s ease, transform .2s ease, background .15s ease;
  opacity: 0;
}
.back-to-top.is-visible { display: flex; opacity: 1; }
.back-to-top:hover { background: var(--color-accent); color: #fff; transform: translateY(-2px); }
.back-to-top:active { transform: translateY(0); }

.error-page { text-align: center; padding: 100px 20px; }
.error-page h1 { font-size: 96px; font-weight: 800; color: var(--color-border); margin: 0; }
.error-page p { color: var(--color-secondary); font-size: 18px; margin: 0 0 24px; }

/* ============ 登录页 ============ */
.login-body { min-height: 100dvh; display: flex; align-items: center; justify-content: center; padding: 20px; background: linear-gradient(160deg, #f1f5f9 0%, #e2e8f0 100%); }
.login-card { width: 100%; max-width: 400px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 16px; box-shadow: var(--shadow-lg); padding: 40px 36px; text-align: center; }
.login-logo { width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 14px; background: #eff6ff; color: var(--color-accent); display: flex; align-items: center; justify-content: center; }
.login-title { font-size: 22px; font-weight: 700; margin: 0 0 6px; }
.login-subtitle { color: var(--color-secondary); font-size: 14px; margin: 0 0 28px; }
.login-form { text-align: left; }
.login-error { color: var(--color-danger); font-size: 13.5px; min-height: 20px; margin: 4px 0 8px; }
.login-back { display: inline-block; margin-top: 18px; color: var(--color-secondary); font-size: 13.5px; }
.login-back:hover { color: var(--color-accent); }

/* ============ 表单通用 ============ */
.field { display: block; margin-bottom: 16px; }
.field-label { display: block; font-size: 13.5px; font-weight: 600; color: var(--color-fg-soft); margin-bottom: 7px; }
.field-label .req { color: var(--color-danger); font-style: normal; }
.field input, .field select, .field textarea {
  width: 100%; padding: 10px 13px; font: inherit; font-size: 14.5px;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: var(--color-surface); color: var(--color-fg); outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12); }
.field textarea { resize: vertical; line-height: 1.7; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-error { color: var(--color-danger); font-size: 13.5px; min-height: 20px; margin: 2px 0 10px; }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 8px; }
.stack-form { }
.field-label .hint { font-weight: 400; color: var(--color-secondary); font-size: 12px; margin-left: 4px; }

/* ============ Markdown 编辑器 ============ */
.md-editor { border: 1px solid var(--color-border); border-radius: var(--radius-sm); overflow: hidden; background: var(--color-surface); }
.md-toolbar { display: flex; align-items: center; gap: 4px; padding: 7px 9px; background: var(--color-muted); border-bottom: 1px solid var(--color-border); flex-wrap: wrap; }
.md-toolbar button, .md-tool-btn {
  font: inherit; font-size: 13.5px; line-height: 1; padding: 6px 9px; border-radius: 7px; cursor: pointer;
  border: 1px solid transparent; background: transparent; color: var(--color-fg-soft); transition: background .12s, color .12s;
  display: inline-flex; align-items: center; gap: 4px; user-select: none;
}
.md-toolbar button:hover, .md-tool-btn:hover { background: var(--color-surface); color: var(--color-fg); }
.md-toolbar button.active { background: var(--color-accent); color: #fff; }
.md-tool-btn { position: relative; }
.md-spacer { flex: 1; }
.md-body { display: flex; }
#mdContent { width: 100%; border: none; border-radius: 0; resize: vertical; min-height: 320px; font-family: 'SFMono-Regular', ui-monospace, Menlo, Consolas, monospace; font-size: 14px; line-height: 1.7; padding: 14px 16px; background: var(--color-surface); color: var(--color-fg); }
#mdContent:focus { box-shadow: none; }
.md-preview { flex: 1; min-height: 320px; padding: 14px 18px; overflow: auto; border-left: 1px solid var(--color-border); }
.md-preview:not([hidden]) { display: block; }
.md-editor.preview-on .md-preview { display: block; }

/* 封面图 */
.cover-field { display: flex; gap: 8px; }
.cover-field input { flex: 1; }
.cover-field label.btn { flex-shrink: 0; margin: 0; cursor: pointer; }
.cover-preview { display: block; margin-top: 10px; max-width: 220px; max-height: 140px; border-radius: var(--radius-sm); border: 1px solid var(--color-border); object-fit: cover; }
.cover-preview[hidden] { display: none; }

/* ============ 后台布局 ============ */
.admin-body { background: var(--color-bg); }
.admin-shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100dvh; }
.admin-sidebar { background: #0f172a; color: #cbd5e1; display: flex; flex-direction: column; padding: 20px 14px; position: sticky; top: 0; height: 100dvh; }
.admin-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 16px; color: #fff; padding: 6px 10px 20px; }
.admin-brand svg { color: #60a5fa; }
.admin-nav { display: flex; flex-direction: column; gap: 4px; }
.admin-nav-link { display: flex; align-items: center; gap: 11px; padding: 10px 12px; border-radius: var(--radius-sm); font-size: 14.5px; font-weight: 500; color: #cbd5e1; transition: background .15s, color .15s; }
.admin-nav-link:hover { background: rgba(255, 255, 255, 0.07); color: #fff; }
.admin-nav-link.active { background: var(--color-accent); color: #fff; }
.admin-sidebar-foot { margin-top: auto; padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, 0.1); }
.admin-sidebar-foot .admin-nav-link { position: relative; }
/* 回收站数量徽标：深色侧边栏上的红色胶囊，自动靠右 */
.nav-badge { margin-left: auto; min-width: 20px; height: 20px; padding: 0 6px; border-radius: 999px; background: #ef4444; color: #fff; font-size: 12px; font-weight: 700; line-height: 20px; text-align: center; }
.nav-badge[hidden] { display: none; }
.admin-main { display: flex; flex-direction: column; min-width: 0; }
.admin-topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 32px; background: var(--color-surface); border-bottom: 1px solid var(--color-border); position: sticky; top: 0; z-index: 20; }
.admin-page-title { font-size: 20px; font-weight: 700; margin: 0; }
.admin-user { display: flex; align-items: center; gap: 14px; font-size: 14px; color: var(--color-fg-soft); }
.admin-content { padding: 28px 32px; flex: 1; }

.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 26px; }
.stat-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 22px; display: flex; align-items: center; gap: 16px; box-shadow: var(--shadow-sm); }
.stat-icon { width: 50px; height: 50px; border-radius: 12px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.stat-icon-blue { background: #eff6ff; color: #2563eb; }
.stat-icon-green { background: #f0fdf4; color: #16a34a; }
.stat-icon-amber { background: #fffbeb; color: #d97706; }
.stat-value { font-size: 30px; font-weight: 800; line-height: 1.1; color: var(--color-fg); }
.stat-label { font-size: 13.5px; color: var(--color-secondary); margin-top: 2px; }

.panel { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm); margin-bottom: 20px; }
.panel-form { max-width: 820px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; gap: 12px; flex-wrap: wrap; }
.panel-title { font-size: 16px; font-weight: 700; margin: 0; }

.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th { text-align: left; font-weight: 600; color: var(--color-secondary); font-size: 12.5px; text-transform: uppercase; letter-spacing: .03em; padding: 10px 12px; border-bottom: 2px solid var(--color-border); }
.data-table td { padding: 12px; border-bottom: 1px solid var(--color-border); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: #f8fafc; }
.td-title { font-weight: 600; color: var(--color-fg); }
.td-muted { color: var(--color-secondary); font-size: 13px; }
.th-actions, .td-actions { white-space: nowrap; }
.col-check { width: 36px; text-align: center; }
.col-check input { width: auto; }
.muted { color: var(--color-secondary); font-weight: 400; font-size: 14px; }

/* 文章管理工具条 / 分页 / 状态徽章 */
.art-toolbar { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: nowrap; align-items: center; }
.art-search { flex: 1 1 auto; min-width: 160px; padding: 9px 13px; font: inherit; font-size: 14px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-fg); outline: none; }
.art-search:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.art-status { padding: 9px 12px; font: inherit; font-size: 14px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-fg); }
.art-toolbar .btn { white-space: nowrap; }
#artBulkDelete[hidden] { display: none; }
.btn-danger { background: #dc2626; border-color: #dc2626; color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-danger:disabled { background: #f1a9a9; border-color: #f1a9a9; cursor: not-allowed; }
.btn-danger-ghost { background: transparent; color: #dc2626; border-color: #f0a3a3; }
.btn-danger-ghost:hover { background: #fef2f2; border-color: #dc2626; }
.text-danger { color: #dc2626 !important; }
.trash-hint { font-size: 13px; color: var(--color-secondary); margin-left: auto; }
.trash-actions { margin-bottom: 0; }
.trash-actions .btn[hidden] { display: none; }
@media (max-width: 760px) {
  .art-toolbar { flex-wrap: wrap; }
  .art-search { flex: 1 1 100%; min-width: 100%; }
}
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-pub { background: #dcfce7; color: #15803d; }
.badge-draft { background: #fef3c7; color: #b45309; }
.art-pager { display: flex; gap: 6px; justify-content: center; margin-top: 18px; flex-wrap: wrap; }
.page-btn { font: inherit; font-size: 13.5px; padding: 7px 12px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-fg); cursor: pointer; transition: background .12s, border-color .12s; }
.page-btn:hover:not(:disabled) { border-color: var(--color-accent); }
.page-btn.active { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.page-btn:disabled { opacity: .5; cursor: not-allowed; }
.td-actions { display: flex; gap: 14px; }
.brand-logo-sm { width: 28px; height: 28px; object-fit: contain; border-radius: 6px; border: 1px solid var(--color-border); }
.empty-inline { color: var(--color-secondary); font-size: 14px; padding: 20px 0; text-align: center; margin: 0; }

/* ============ 批量导入 ============ */
.import-hint { font-size: 13.5px; color: var(--color-fg-soft); line-height: 1.7; margin: 0 0 12px; }
.import-hint code { background: var(--color-muted); padding: 1px 7px; border-radius: 5px; font-size: 12.5px; }
.import-hint strong { color: var(--color-fg); }
.dropzone { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; padding: 40px 20px; border: 2px dashed var(--color-border); border-radius: var(--radius); color: var(--color-secondary); background: var(--color-bg); cursor: pointer; transition: border-color .18s, background .18s, color .18s; text-align: center; }
.dropzone:hover { border-color: var(--color-accent); color: var(--color-accent); }
.dropzone.dragover { border-color: var(--color-accent); background: #eff6ff; color: var(--color-accent); }
.dz-title { font-size: 15px; font-weight: 600; color: var(--color-fg); }
.dz-sub { font-size: 12.5px; color: var(--color-secondary); }
.import-filebar { display: flex; align-items: center; gap: 10px; margin-top: 14px; padding: 10px 14px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-sm); color: var(--color-fg-soft); }
.import-filebar svg { color: var(--color-accent); flex-shrink: 0; }
.file-name { font-weight: 600; color: var(--color-fg); }
.file-hint { color: var(--color-secondary); font-size: 13px; }
.import-filebar .link { margin-left: auto; background: none; border: none; color: var(--color-accent); cursor: pointer; font: inherit; font-size: 13.5px; padding: 4px 6px; }
.import-filebar .link:hover { text-decoration: underline; }
.import-scroll { overflow-x: auto; }
.import-grid { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 760px; }
.import-grid th { text-align: left; font-weight: 600; color: var(--color-secondary); font-size: 12.5px; text-transform: uppercase; letter-spacing: .03em; padding: 10px 10px; border-bottom: 2px solid var(--color-border); white-space: nowrap; }
.import-grid td { padding: 8px 10px; border-bottom: 1px solid var(--color-border); vertical-align: top; }
.import-grid .col-idx { width: 36px; color: var(--color-secondary); text-align: center; }
.import-grid .col-title { min-width: 160px; }
.import-grid .col-content { min-width: 280px; }
.import-grid .col-brand, .import-grid .col-cat { min-width: 120px; }
.import-grid .col-tags { min-width: 110px; }
.import-grid .pv-content { color: var(--color-fg-soft); max-width: 360px; }
.import-success { color: var(--color-success); font-size: 13.5px; margin: 12px 0 0; }
.import-warn { color: var(--color-warning, #b45309); font-size: 13px; margin: 12px 0 0; line-height: 1.7; }

.two-col { display: grid; grid-template-columns: 340px 1fr; gap: 20px; align-items: start; }

/* 分类树（后台） */
.cat-list { display: flex; flex-direction: column; }
.cat-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px; border-bottom: 1px solid var(--color-border); }
.cat-row:last-child { border-bottom: none; }
.cat-row:hover { background: #f8fafc; }
.cat-row-name { font-size: 14.5px; font-weight: 500; display: flex; align-items: center; gap: 8px; }
.cat-row-branch { color: var(--color-border); }
.cat-row-badge { font-size: 11.5px; color: var(--color-secondary); background: var(--color-muted); padding: 1px 8px; border-radius: 999px; font-weight: 500; }
.cat-row-actions { display: flex; gap: 14px; white-space: nowrap; }

/* ============ 模态框 ============ */
.modal-overlay { position: fixed; inset: 0; background: rgba(15, 23, 42, 0.5); display: flex; align-items: center; justify-content: center; padding: 20px; z-index: 100; animation: fadeIn .15s ease; }
.modal { width: 100%; max-width: 440px; background: var(--color-surface); border-radius: 14px; box-shadow: var(--shadow-lg); animation: popIn .18s ease; }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; border-bottom: 1px solid var(--color-border); }
.modal-head h3 { margin: 0; font-size: 16px; font-weight: 700; }
.modal-close { background: none; border: none; font-size: 26px; line-height: 1; color: var(--color-secondary); cursor: pointer; padding: 0; }
.modal-close:hover { color: var(--color-fg); }
.modal-form { padding: 20px 22px; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes popIn { from { opacity: 0; transform: scale(.96) translateY(6px); } to { opacity: 1; transform: none; } }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .search-layout { grid-template-columns: 220px 1fr; gap: 24px; }
  .article-layout { grid-template-columns: 1fr; }
  .article-side { position: static; }
  .two-col { grid-template-columns: 300px 1fr; }
}

@media (max-width: 768px) {
  .search-layout { grid-template-columns: 1fr; }
  .search-sidebar { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
  .stat-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .admin-shell { grid-template-columns: 1fr; }
  .admin-sidebar { position: static; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; padding: 12px 16px; gap: 8px; }
  .admin-brand { padding: 0 10px 0 0; }
  .admin-nav { flex-direction: row; flex-wrap: wrap; gap: 6px; }
  .admin-nav-link span { display: none; }
  .admin-nav-link { padding: 9px 11px; }
  .admin-sidebar-foot { margin: 0 0 0 auto; padding: 0; border: none; }
  .admin-sidebar-foot .admin-nav-link span { display: inline; }
  .admin-content { padding: 20px 16px; }
  .admin-topbar { padding: 14px 16px; }
  .article-main { padding: 24px 20px; }
  .field-row { grid-template-columns: 1fr; }
  .header-admin-link { display: none; }
}

@media (max-width: 480px) {
  .search-sidebar { grid-template-columns: 1fr; }
  .hero-search input { font-size: 16px; }
  .header-search { max-width: none; }
}

/* 无障碍：可见焦点 & 减少动效 */
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ============ 护眼主题（米黄） ============ */
[data-theme="sepia"] {
  --color-primary: #6b5b45;
  --color-on-primary: #fbf3e4;
  --color-secondary: #8a7a63;
  --color-accent: #b07d2b;
  --color-accent-hover: #956a23;
  --color-bg: #f5ecd9;
  --color-surface: #fbf5e9;
  --color-fg: #433422;
  --color-fg-soft: #6b5b45;
  --color-muted: #ece0c8;
  --color-border: #e3d4b8;
  --color-danger: #b4452f;
  --color-danger-soft: #f6e2d8;
  --color-success: #5a7d3a;
  --shadow-sm: 0 1px 2px rgba(67, 52, 34, 0.10);
  --shadow: 0 4px 16px rgba(67, 52, 34, 0.12);
  --shadow-lg: 0 12px 40px rgba(67, 52, 34, 0.18);
}

/* 主题按钮第三态：护眼图标 */
.theme-toggle .icon-sepia { display: none; }
[data-theme="sepia"] .theme-toggle .icon-sun { display: none; }
[data-theme="sepia"] .theme-toggle .icon-moon { display: none; }
[data-theme="sepia"] .theme-toggle .icon-sepia { display: inline; }

/* ============ 阅读进度条 + 阅读工具栏 ============ */
.read-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: var(--color-accent); z-index: 60; transition: width .08s linear; }
.read-tools { position: fixed; right: 20px; bottom: 24px; z-index: 50; display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.read-tools-toggle { width: 46px; height: 46px; border-radius: 50%; background: var(--color-accent); color: #fff; border: none; cursor: pointer; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow); transition: transform .12s; }
.read-tools-toggle:hover { transform: translateY(-2px); }
.read-panel { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 14px 16px; width: 248px; display: none; }
.read-panel.open { display: block; }
.read-panel h4 { margin: 0 0 10px; font-size: 12.5px; color: var(--color-secondary); text-transform: uppercase; letter-spacing: .04em; }
.read-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; font-size: 13.5px; color: var(--color-fg-soft); }
.read-row:last-child { margin-bottom: 0; }
.seg { display: inline-flex; border: 1px solid var(--color-border); border-radius: var(--radius-sm); overflow: hidden; }
.seg button { border: none; background: var(--color-surface); color: var(--color-fg-soft); padding: 5px 10px; font: inherit; font-size: 13px; cursor: pointer; }
.seg button + button { border-left: 1px solid var(--color-border); }
.seg button.active { background: var(--color-accent); color: #fff; }

/* ============ 文章目录（TOC） ============ */
.toc-title { font-size: 14px; font-weight: 700; color: var(--color-secondary); text-transform: uppercase; letter-spacing: .05em; margin: 0 0 12px; }
.toc-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; max-height: 56vh; overflow: auto; }
.toc-list a { display: block; font-size: 13.5px; color: var(--color-fg-soft); text-decoration: none; padding: 5px 10px; border-radius: var(--radius-sm); border-left: 2px solid transparent; transition: background .15s, color .15s; line-height: 1.5; }
.toc-list a.toc-h3 { padding-left: 22px; font-size: 13px; }
.toc-list a:hover { background: var(--color-muted); color: var(--color-fg); }
.toc-list a.active { color: var(--color-accent); border-left-color: var(--color-accent); background: color-mix(in srgb, var(--color-accent) 8%, transparent); }

/* ============ 搜索自动补全 ============ */
.suggest-box { position: absolute; top: calc(100% + 6px); left: 0; right: 0; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); box-shadow: var(--shadow-lg); overflow: hidden; z-index: 50; display: none; }
.suggest-box.open { display: block; }
.suggest-item { display: flex; align-items: center; gap: 10px; padding: 10px 14px; cursor: pointer; font-size: 14px; color: var(--color-fg); border-bottom: 1px solid var(--color-border); }
.suggest-item:last-child { border-bottom: none; }
.suggest-item:hover, .suggest-item.active { background: var(--color-muted); }
.suggest-kind { font-size: 11px; padding: 1px 7px; border-radius: 999px; background: var(--color-muted); color: var(--color-secondary); flex-shrink: 0; }
.suggest-item.kind-article .suggest-kind { background: #eff6ff; color: #1d4ed8; }
.suggest-item.kind-brand .suggest-kind { background: #f0fdf4; color: #15803d; }
.suggest-item.kind-category .suggest-kind { background: #fef3c7; color: #b45309; }
.suggest-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.suggest-empty { padding: 12px 14px; color: var(--color-secondary); font-size: 13.5px; }
.header-search, .hero-search { position: relative; }
@media (max-width: 768px) { .search-sidebar .suggest-box { position: static; box-shadow: none; border: none; } }

/* ============ 版本历史页 ============ */
.vlist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.vcard { border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 14px 16px; background: var(--color-surface); display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.vcard-main { min-width: 0; }
.vcard-title { font-weight: 600; color: var(--color-fg); font-size: 14.5px; }
.vcard-meta { color: var(--color-secondary); font-size: 12.5px; margin-top: 3px; }
.vcard-actions { display: flex; gap: 8px; flex-shrink: 0; }
.vnote { color: var(--color-fg-soft); font-size: 12.5px; font-style: italic; }
.vview { white-space: pre-wrap; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; background: var(--color-muted); border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 14px; max-height: 380px; overflow: auto; color: var(--color-fg); margin: 0; }

/* ============ 数据统计页 ============ */
.trend-wrap { overflow-x: auto; padding-bottom: 4px; }
.trend-grid { display: grid; grid-template-columns: repeat(14, 1fr); gap: 6px; align-items: end; height: 170px; min-width: 560px; }
.trend-bar { display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.trend-bar .bar { width: 100%; max-width: 22px; background: var(--color-accent); border-radius: 6px 6px 0 0; min-height: 2px; transition: height .25s; }
.trend-bar .bar.empty { background: var(--color-border); }
.trend-bar .dlabel { font-size: 10.5px; color: var(--color-secondary); }
.trend-bar .dval { font-size: 11px; color: var(--color-fg-soft); font-weight: 600; }
.wordcloud { display: flex; flex-wrap: wrap; gap: 10px; align-items: baseline; }
.wordcloud a { color: var(--color-fg-soft); text-decoration: none; padding: 4px 10px; border: 1px solid var(--color-border); border-radius: 999px; transition: color .15s, border-color .15s; }
.wordcloud a:hover { color: var(--color-accent); border-color: var(--color-accent); }