* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  background: #f5f6f8; color: #333; font-size: 15px; line-height: 1.7;
}
.layout { display: flex; min-height: 100vh; }

/* 侧边栏 */
.sidebar {
  width: 300px; min-width: 300px; background: #fff; border-right: 1px solid #e6e6e6;
  padding: 0; overflow-y: auto; height: 100vh; position: sticky; top: 0;
}
.sidebar-head {
  position: sticky; top: 0; z-index: 5; background: #fafbfc;
  border-bottom: 1px solid #eee;
}
.sidebar-title {
  padding: 14px 20px 8px; font-size: 16px; font-weight: 700; color: #2c3e50;
}

/* 搜索框 */
.search-wrap { padding: 6px 12px 12px; }
#search-input {
  width: 100%; padding: 8px 10px; border: 1px solid #d7dde5; border-radius: 6px;
  font-size: 13px; outline: none; background: #fff; transition: border-color .15s, box-shadow .15s;
}
#search-input:focus { border-color: #2563eb; box-shadow: 0 0 0 2px rgba(37,99,235,.12); }
.search-results {
  display: none; margin-top: 6px; background: #fff; border: 1px solid #e2e8f0;
  border-radius: 6px; box-shadow: 0 6px 16px rgba(0,0,0,.1); max-height: 46vh; overflow-y: auto;
}
.search-results.show { display: block; }
.sr-item { display: block; padding: 8px 10px; border-bottom: 1px solid #f0f0f0; text-decoration: none; color: #333; }
.sr-item:last-child { border-bottom: none; }
.sr-item:hover, .sr-item.sel { background: #eef4ff; }
.sr-cmds { margin-bottom: 3px; }
.cmd-chip {
  display: inline-block; font-family: Consolas, Monaco, monospace; font-size: 12px;
  background: #1e293b; color: #7dd3fc; padding: 1px 8px; border-radius: 4px; margin: 0 6px 3px 0;
}
.sr-title { font-size: 13px; font-weight: 600; color: #1e293b; }
.sr-cat { font-size: 11px; color: #94a3b8; margin-left: 6px; font-weight: 400; }
.sr-snip { font-size: 12px; color: #888; margin-top: 2px; line-height: 1.55; word-break: break-all; }
.sr-empty { padding: 12px; font-size: 12px; color: #999; text-align: center; }
.sr-count { padding: 5px 10px; font-size: 11px; color: #94a3b8; background: #f8fafc; border-bottom: 1px solid #f0f0f0; }

/* 菜单 */
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li a, .sidebar .cat-name {
  display: block; padding: 8px 20px; color: #555; text-decoration: none; font-size: 14px;
  border-left: 3px solid transparent; transition: all .12s;
}
.sidebar li a:hover { background: #f0f4f8; color: #2563eb; }
.sidebar li a.active { background: #e8f0fe; color: #2563eb; border-left-color: #2563eb; font-weight: 600; }
.sidebar .cat-item > .cat-name {
  font-weight: 700; color: #2c3e50; padding-top: 12px; padding-bottom: 6px;
  background: #fafbfc; border-top: 1px solid #f0f0f0; cursor: pointer;
}
.sidebar .cat-item > ul { padding-bottom: 6px; }
.sidebar .cat-item > ul > li > a { padding-left: 32px; font-size: 13px; }
.sidebar .page-link > a { padding-left: 24px; }

/* 内容区 */
.content { flex: 1; padding: 32px 48px; max-width: 1100px; }
article.doc { background: #fff; padding: 32px 40px; border-radius: 6px;
  box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.page-title { font-size: 26px; font-weight: 700; margin: 0 0 8px; color: #1a1a1a;
  border-bottom: 2px solid #eee; padding-bottom: 10px; }
.page-meta { font-size: 12px; color: #999; margin-bottom: 20px; }
.page-body { margin-top: 8px; }

/* markdown 渲染样式 */
.page-body h1 { font-size: 22px; margin: 24px 0 12px; color: #1a1a1a; }
.page-body h2 { font-size: 19px; margin: 22px 0 10px; color: #2c3e50; border-bottom: 1px solid #eee; padding-bottom: 6px; }
.page-body h3 { font-size: 16px; margin: 18px 0 8px; color: #34495e; }
.page-body h4 { font-size: 15px; margin: 14px 0 6px; color: #34495e; }
.page-body p { margin: 8px 0; }
.page-body ul, .page-body ol { margin: 8px 0; padding-left: 28px; }
.page-body li { margin: 4px 0; }
.page-body a { color: #2563eb; text-decoration: none; }
.page-body a:hover { text-decoration: underline; }
.page-body img { max-width: 100%; border: 1px solid #eee; border-radius: 4px; margin: 8px 0; }
.page-body code {
  background: #f4f5f7; padding: 2px 6px; border-radius: 3px; font-size: 13px;
  font-family: Consolas, Monaco, "Courier New", monospace; color: #c0392b;
}
.page-body pre {
  background: #282c34; color: #abb2bf; padding: 16px 20px; border-radius: 6px;
  overflow-x: auto; margin: 12px 0; font-size: 13px; line-height: 1.6;
}
.page-body pre code { background: transparent; color: inherit; padding: 0; }
.page-body blockquote {
  border-left: 4px solid #ddd; padding: 4px 16px; margin: 12px 0;
  color: #666; background: #fafafa;
}
.page-body table { border-collapse: collapse; margin: 12px 0; width: 100%; font-size: 14px; }
.page-body th, .page-body td { border: 1px solid #ddd; padding: 8px 12px; text-align: left; }
.page-body th { background: #f5f6f8; font-weight: 600; }
.page-body tr:nth-child(even) td { background: #fafbfc; }
.page-body hr { border: none; border-top: 1px solid #eee; margin: 20px 0; }

/* 搜索高亮 */
mark { background: #ffe58f; color: inherit; padding: 0 1px; border-radius: 2px; }
mark.hl { background: #fff3bf; box-shadow: 0 0 0 1px #f5d000 inset; }
.hl-bar {
  font-size: 13px; color: #666; background: #fffbe6; border: 1px solid #ffe58f;
  border-radius: 4px; padding: 6px 12px; margin-bottom: 14px;
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.hl-bar button {
  border: none; background: #f0f0f0; border-radius: 4px; padding: 2px 10px;
  cursor: pointer; font-size: 12px;
}
.hl-bar button:hover { background: #e0e0e0; }

/* 响应式 */
@media (max-width: 768px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; min-width: 0; height: auto; position: relative; max-height: 46vh; }
  .content { padding: 16px; }
  article.doc { padding: 16px; }
}