/* ============ Intro bar ============ */
.intro{
  background:var(--surface);
  border-bottom:1px solid var(--border);
  padding:32px 48px;
}
.intro-inner{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:24px;
  flex-wrap:wrap;
}
.avatar{
  width:64px;height:64px;border-radius:50%;
  background:linear-gradient(135deg,#3B82F6,#8B5CF6);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:22px;letter-spacing:.5px;
  flex-shrink:0;
  box-shadow:var(--shadow);
}
.intro-text{flex:1;min-width:280px}
.intro-name{
  font-size:22px;font-weight:700;letter-spacing:-.01em;
  display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;
}
.intro-name .slogan{
  font-family:'JetBrains Mono',monospace;
  font-size:11px;font-weight:500;letter-spacing:2px;
  color:var(--text-mute);
}
.intro-bio{
  color:var(--text-dim);font-size:14px;margin-top:4px;line-height:1.6;
  max-width:560px;
}
.intro-links{display:flex;gap:8px;flex-shrink:0}
.intro-links a{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border:1px solid var(--border);border-radius:8px;
  font-size:13px;color:var(--text-dim);
  transition:all .15s;
  background:var(--surface);
}
.intro-links a:hover{
  border-color:var(--text);color:var(--text);text-decoration:none;
  transform:translateY(-1px);
}
.theme-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:8px;
  border:1px solid var(--border);background:var(--surface);
  color:var(--text-dim);cursor:pointer;
  transition:all .15s;
}
.theme-toggle:hover{border-color:var(--text);color:var(--text);transform:translateY(-1px)}
.theme-toggle svg{display:block;transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.theme-toggle:hover svg{transform:rotate(15deg)}
.theme-toggle .ico-moon{display:none}
[data-theme="dark"] .theme-toggle .ico-sun{display:none}
[data-theme="dark"] .theme-toggle .ico-moon{display:block}

/* ============ Layout ============ */
.layout{
  max-width:1200px;margin:0 auto;
  display:grid;grid-template-columns:220px minmax(0,1fr);gap:48px;
  padding:32px 48px 80px;
}
/* 文章视图：左分类 + 中正文 + 右 TOC */
.layout.has-toc{
  max-width:1320px;
  grid-template-columns:200px minmax(0,720px) 200px;
  gap:40px;
}
.toc-panel{display:none}    /* 默认（列表视图）不显示 */
.layout.has-toc .toc-panel{display:block}

/* ============ Sidebar ============ */
.sidebar{
  position:sticky;top:32px;align-self:start;
}
.sidebar-label{
  font-family:'JetBrains Mono',monospace;
  font-size:11px;font-weight:500;letter-spacing:2px;
  color:var(--text-mute);
  text-transform:uppercase;
  margin-bottom:12px;padding:0 12px;
}
.cat-list{display:flex;flex-direction:column;gap:2px}
.cat-item{
  display:flex;align-items:center;justify-content:space-between;
  padding:9px 12px;border-radius:6px;
  font-size:14px;color:var(--text-dim);
  text-align:left;width:100%;
  transition:all .12s;
  text-decoration:none;
}
.cat-item:hover{background:var(--border-soft);color:var(--text);text-decoration:none}
.cat-item.active{
  background:var(--accent-soft);color:var(--accent);font-weight:500;
}
.cat-item .count{
  font-family:'JetBrains Mono',monospace;
  font-size:11px;color:var(--text-mute);
}
.cat-item.active .count{color:var(--accent)}

/* ============ Main ============ */
.main{min-width:0;max-width:760px}

/* List view */
.list-head{
  margin-bottom:32px;padding-bottom:20px;border-bottom:1px solid var(--border);
}
.list-title{
  font-size:30px;font-weight:700;letter-spacing:-.02em;line-height:1.2;
  margin-bottom:6px;
}
.list-meta{
  font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--text-mute);
  letter-spacing:.5px;
}
.list-desc{
  color:var(--text-dim);font-size:14px;margin-top:10px;line-height:1.6;
}

.article-list{display:flex;flex-direction:column}
.article-item{
  display:block;padding:20px 0;border-bottom:1px solid var(--border-soft);
  text-decoration:none;color:inherit;
  transition:background .12s,padding-left .15s;
  margin:0 -12px;padding-left:12px;padding-right:12px;border-radius:4px;
}
.article-item:hover{background:var(--border-soft);text-decoration:none;padding-left:16px}
.article-item:last-child{border-bottom:none}
.article-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap}
.article-title{
  font-size:17px;font-weight:600;color:var(--text);
  letter-spacing:-.005em;line-height:1.4;
}
.article-date{
  font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--text-mute);
  white-space:nowrap;
}
.article-excerpt{
  font-size:14px;color:var(--text-dim);margin-top:6px;line-height:1.6;
}

.empty{
  padding:64px 24px;text-align:center;color:var(--text-mute);
  border:1px dashed var(--border);border-radius:12px;
}
.empty-icon{font-size:32px;margin-bottom:12px;opacity:.4}
.empty-text{font-size:14px}

/* ============ Toolbar (search + page size) ============ */
.toolbar{
  display:flex;align-items:center;gap:12px;
  margin-bottom:24px;flex-wrap:wrap;
}
.search-wrap{flex:1;min-width:240px;position:relative}
.search-input{
  width:100%;padding:10px 36px 10px 36px;
  border:1px solid var(--border);border-radius:8px;
  background:var(--surface);color:var(--text);
  font-size:14px;font-family:inherit;outline:none;
  transition:border-color .15s,box-shadow .15s;
}
.search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.search-input::placeholder{color:var(--text-mute)}
.search-icon{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;color:var(--text-mute);pointer-events:none;
}
.search-clear{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  width:24px;height:24px;border-radius:6px;
  display:none;align-items:center;justify-content:center;
  color:var(--text-mute);cursor:pointer;background:transparent;
  font-size:12px;line-height:1;
}
.search-clear:hover{background:var(--border-soft);color:var(--text)}
.search-input:not(:placeholder-shown) ~ .search-clear{display:flex}
.pagesize-wrap{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-dim);
}
.pagesize-select{
  padding:8px 28px 8px 12px;
  border:1px solid var(--border);border-radius:8px;
  background:var(--surface);color:var(--text);
  font-family:inherit;font-size:13px;cursor:pointer;outline:none;
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2371717A' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat:no-repeat;background-position:right 8px center;
  transition:border-color .15s;
}
.pagesize-select:hover,.pagesize-select:focus{border-color:var(--text-dim)}

/* Search result meta */
.search-meta{
  font-size:13px;color:var(--text-dim);
  padding:10px 14px;background:var(--accent-soft);
  border-radius:6px;margin-bottom:16px;
}
.search-meta strong{color:var(--accent);font-weight:600}
.search-meta em{font-style:normal;color:var(--text);font-weight:600}
.search-scope{
  font-family:'JetBrains Mono',monospace;
  font-size:11px;color:var(--text-mute);letter-spacing:.5px;
  margin-left:6px;
}

/* 搜索结果里的正文片段（仅当匹配仅命中正文时显示） */
.article-body-match{
  margin-top:8px;padding:8px 12px;
  font-size:13px;line-height:1.6;color:var(--text-dim);
  background:var(--border-soft);
  border-left:2px solid var(--accent);
  border-radius:0 6px 6px 0;
  font-family:'Inter','Noto Serif SC',sans-serif;
  word-break:break-word;
}

/* Pagination */
.pagination{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:32px;padding-top:24px;border-top:1px solid var(--border);
  flex-wrap:wrap;
}
.page-info{
  font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--text-mute);
  letter-spacing:.5px;
}
.pages{display:flex;gap:4px;flex-wrap:wrap;align-items:center}
.page-btn{
  min-width:34px;height:34px;padding:0 10px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--border);border-radius:8px;
  background:var(--surface);color:var(--text-dim);
  font-size:13px;font-family:inherit;cursor:pointer;
  text-decoration:none;transition:all .15s;
}
.page-btn:hover:not(.disabled){border-color:var(--text);color:var(--text);text-decoration:none}
.page-btn.active{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:600}
[data-theme="dark"] .page-btn.active{color:#0A0A0B}
.page-btn.disabled{opacity:.4;cursor:not-allowed}
.page-ellipsis{color:var(--text-mute);padding:0 4px;font-size:13px;letter-spacing:1px}

/* ============ Article view ============ */
.back-bar{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--text-dim);
  margin-bottom:24px;padding:6px 0;
  transition:color .15s;
}
.back-bar:hover{color:var(--text);text-decoration:none}

.article-view-title{
  font-size:34px;font-weight:700;letter-spacing:-.02em;line-height:1.25;
  margin-bottom:12px;
}
.article-view-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--text-mute);
  letter-spacing:.5px;
  padding-bottom:24px;margin-bottom:32px;border-bottom:1px solid var(--border);
}
.article-view-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-mute)}
.article-view-meta .tag{
  display:inline-block;padding:2px 8px;background:var(--accent-soft);color:var(--accent);
  border-radius:4px;font-weight:500;
}

.article-body{font-size:15.5px;line-height:1.78;color:var(--text)}
.article-body h2{
  font-size:22px;font-weight:700;letter-spacing:-.01em;line-height:1.3;
  margin:36px 0 14px;
}
.article-body h3{
  font-size:17px;font-weight:600;letter-spacing:-.005em;
  margin:28px 0 10px;color:var(--text);
}
.article-body p{margin:14px 0;color:var(--text-dim)}
.article-body p strong{color:var(--text);font-weight:600}
.article-body ul,.article-body ol{margin:14px 0;padding-left:24px;color:var(--text-dim)}
.article-body li{margin:6px 0}
.article-body code{
  font-family:'JetBrains Mono',monospace;font-size:.9em;
  background:var(--code-bg);padding:2px 6px;border-radius:4px;
  border:1px solid var(--code-border);
  color:var(--text);
}
.article-body pre{
  background:var(--code-bg);border:1px solid var(--code-border);
  border-radius:8px;padding:16px 18px;
  overflow-x:auto;margin:18px 0;
  font-family:'JetBrains Mono',monospace;font-size:13px;line-height:1.65;
}
.article-body pre code{background:none;padding:0;border:none;font-size:inherit}
.article-body blockquote{
  margin:18px 0;padding:12px 18px;
  border-left:3px solid var(--accent);
  background:var(--accent-soft);
  border-radius:0 6px 6px 0;
  color:var(--text-dim);font-size:14px;
}
.article-body hr{
  border:none;border-top:1px solid var(--border);margin:32px 0;
}
.article-body a{color:var(--accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}

/* ============ Article body tables ============ */
.article-body .table-wrap,
.article-body table{
  margin:20px 0;
}
.article-body .table-wrap{
  overflow-x:auto;
  border:1px solid var(--border);
  border-radius:8px;
  background:var(--surface);
}
.article-body .table-wrap table{
  width:100%;
  margin:0;
  border-collapse:collapse;
  font-size:14px;
}
.article-body table thead{
  background:var(--border-soft);
}
.article-body table th{
  text-align:left;
  padding:10px 14px;
  font-weight:600;
  color:var(--text);
  font-size:13px;
  letter-spacing:.3px;
  border-bottom:1px solid var(--border);
  white-space:nowrap;
}
.article-body table td{
  padding:10px 14px;
  border-top:1px solid var(--border-soft);
  color:var(--text-dim);
  vertical-align:top;
  line-height:1.7;
}
.article-body table tbody tr:hover{background:var(--border-soft)}
.article-body table tbody tr:hover td{color:var(--text)}
.article-body table tbody tr:first-child td{border-top:none}
.article-body table code{
  font-size:.88em;
  padding:1px 5px;
  white-space:nowrap;
}
.article-body table a{
  color:var(--accent);
  text-decoration:none;
  font-family:'JetBrains Mono','Courier New',monospace;
  font-size:.88em;
  padding:2px 7px;
  background:var(--accent-soft);
  border-radius:5px;
  border:1px solid transparent;
  transition:all .15s;
  display:inline-block;
  white-space:nowrap;
}
.article-body table a:hover{
  background:var(--accent);
  color:#fff;
  text-decoration:none;
  border-color:var(--accent);
}
[data-theme="dark"] .article-body table a:hover{color:#0A0A0B}

/* ============ TOC（文章右侧目录） ============ */
.toc-panel{
  position:sticky;top:32px;align-self:start;
  max-height:calc(100vh - 64px);overflow-y:auto;
  font-size:13px;line-height:1.55;
  padding-left:18px;
  border-left:1px solid var(--border-soft);
}
.toc-label{
  font-family:'JetBrains Mono',monospace;
  font-size:11px;letter-spacing:2px;
  color:var(--text-mute);
  text-transform:uppercase;
  margin-bottom:12px;
}
.toc-list{display:flex;flex-direction:column;gap:1px}
.toc-link{
  display:block;
  padding:5px 10px;border-radius:4px;
  color:var(--text-dim);
  text-decoration:none;
  border-left:2px solid transparent;
  transition:color .12s,background .12s,border-color .12s;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.toc-link:hover{color:var(--text);background:var(--border-soft);text-decoration:none}
.toc-link.toc-h3{padding-left:22px;font-size:12.5px;color:var(--text-mute)}
.toc-link.active{
  color:var(--accent);
  background:var(--accent-soft);
  border-left-color:var(--accent);
  font-weight:500;
}
.toc-link.toc-h3.active{color:var(--accent)}
/* 滚动条样式（极简） */
.toc-panel::-webkit-scrollbar{width:6px}
.toc-panel::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.toc-panel::-webkit-scrollbar-thumb:hover{background:var(--text-mute)}

/* Prev / Next */
.nav-pn{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  margin-top:48px;padding-top:32px;border-top:1px solid var(--border);
}
.nav-pn a{
  display:flex;flex-direction:column;gap:4px;
  padding:14px 18px;border:1px solid var(--border);border-radius:8px;
  text-decoration:none;color:var(--text);
  transition:all .15s;
  background:var(--surface);
  min-height:64px;
}
.nav-pn a:hover{border-color:var(--accent);text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow)}
.nav-pn a.disabled{opacity:.4;pointer-events:none;background:var(--border-soft)}
.nav-pn .label{
  font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--text-mute);letter-spacing:1px;
}
.nav-pn .next{text-align:right}
.nav-pn .title-pn{font-size:14px;font-weight:600;line-height:1.4}

/* ============ Footer ============ */
.site-foot{
  border-top:1px solid var(--border);
  background:var(--surface);
  padding:48px 48px 56px;
  margin-top:64px;
}
.foot-inner{
  max-width:1200px;margin:0 auto;
  display:flex;flex-direction:column;align-items:center;gap:12px;
  text-align:center;
}
.foot-brand{
  font-size:20px;font-weight:700;letter-spacing:-.01em;
  background:linear-gradient(135deg,#3B82F6,#8B5CF6);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.foot-tag{
  font-family:'JetBrains Mono',monospace;
  font-size:11px;letter-spacing:2px;color:var(--text-mute);
  margin-bottom:10px;
}
.foot-links{display:flex;gap:18px;margin-bottom:6px;flex-wrap:wrap;justify-content:center}
.foot-links a{
  font-size:13px;color:var(--text-dim);text-decoration:none;
  transition:color .15s;
}
.foot-links a:hover{color:var(--accent);text-decoration:none}
.foot-meta{
  font-family:'JetBrains Mono',monospace;
  font-size:11.5px;color:var(--text-mute);letter-spacing:.4px;
  display:flex;flex-wrap:wrap;justify-content:center;gap:6px 10px;
  line-height:1.7;
}
.foot-meta a{color:var(--text-mute)}
.foot-meta a:hover{color:var(--accent);text-decoration:none}
.foot-meta .sep{opacity:.4}
.foot-icp{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;margin-top:10px;
  border:1px solid var(--border);border-radius:6px;
  font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--text-mute);
  text-decoration:none;letter-spacing:.5px;
}
.foot-icp:hover{border-color:var(--text-dim);color:var(--text-dim);text-decoration:none}
.foot-icp::before{
  content:'';width:5px;height:5px;border-radius:50%;background:#22C55E;
  box-shadow:0 0 6px rgba(34,197,94,.5);
}

/* ============ Tablet ============ */
@media(max-width:1180px){
  /* TOC 面板在中等屏幕收起 */
  .layout.has-toc{
    grid-template-columns:200px minmax(0,1fr);
    max-width:1200px;
  }
  .layout.has-toc .toc-panel{display:none}
}

/* ============ Mobile ============ */
@media(max-width:880px){
  .intro{padding:20px 20px}
  .intro-inner{gap:16px}
  .layout,.layout.has-toc{
    grid-template-columns:1fr;gap:24px;padding:20px;max-width:none;
  }
  .layout .toc-panel,.layout.has-toc .toc-panel{display:none}
  .sidebar{position:static;margin-bottom:8px}
  .cat-list{flex-direction:row;flex-wrap:wrap;gap:6px}
  .cat-item{padding:6px 12px;border:1px solid var(--border);font-size:13px}
  .cat-item.active{border-color:var(--accent)}
  .sidebar-label{display:none}
  .list-title{font-size:24px}
  .article-view-title{font-size:26px}
  .site-foot{padding:36px 20px 44px;margin-top:32px}
}