:root {
  --bg: #fafafa;
  --bg-card: #ffffff;
  --bg-sidebar: #f4f5f7;
  --bg-code: #1e1e1e;
  --fg: #1f2328;
  --fg-muted: #6e7681;
  --border: #e5e7eb;
  --primary: #2b6cb0;
  --primary-light: #ebf4ff;
  --accent: #d97706;
  --code-fg: #e6edf3;
  --shadow: 0 1px 3px rgba(0,0,0,0.06);
  --radius: 6px;
  --font-sans: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono: "JetBrains Mono","SF Mono",Consolas,"Liberation Mono",Menlo,monospace;
}
[data-theme="dark"] {
  --bg: #0d1117;
  --bg-card: #161b22;
  --bg-sidebar: #010409;
  --bg-code: #010409;
  --fg: #e6edf3;
  --fg-muted: #8b949e;
  --border: #30363d;
  --primary: #58a6ff;
  --primary-light: #1f6feb33;
  --accent: #f0883e;
  --shadow: 0 1px 3px rgba(0,0,0,0.3);
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
.content-body {
  padding: 24px 32px;
  max-width: 920px;
  margin: 0 auto;
}

/* 地址栏（Windows 资源管理器风格） */
.address-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 13.5px;
  box-shadow: var(--shadow);
  flex-wrap: wrap;
}
.address-bar .crumb {
  color: var(--primary);
  text-decoration: none;
  padding: 3px 8px;
  border-radius: 4px;
  transition: background 0.15s;
}
.address-bar .crumb:hover {
  background: var(--primary-light);
  text-decoration: none;
}
.address-bar .crumb.current {
  color: var(--fg);
  font-weight: 600;
  background: transparent;
  cursor: default;
}
.address-bar .sep {
  color: var(--fg-muted);
  user-select: none;
}
.content {
  background: var(--bg-card);
  padding: 32px 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.content h1 {
  font-size: 28px;
  border-bottom: 2px solid var(--primary);
  padding-bottom: 8px;
  margin-top: 0;
}
.content h2 {
  font-size: 22px;
  margin-top: 32px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}
.content h3 { font-size: 18px; margin-top: 24px; }
.content h4 { font-size: 16px; margin-top: 18px; }
.content p { margin: 12px 0; }
.content ul, .content ol { padding-left: 24px; }
.content li { margin: 4px 0; }
.content strong { color: var(--accent); }
.content a { color: var(--primary); text-decoration: none; }
.content a:hover { text-decoration: underline; }
.content blockquote {
  margin: 12px 0; padding: 8px 16px;
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--fg);
}
.content table {
  border-collapse: collapse; margin: 16px 0;
  width: 100%; font-size: 14px;
}
.content th, .content td {
  border: 1px solid var(--border);
  padding: 6px 12px; text-align: left;
}
.content th { background: var(--bg-sidebar); font-weight: 600; }
.content tr:nth-child(even) td { background: var(--bg-sidebar); }
.content hr { border: 0; border-top: 1px solid var(--border); margin: 24px 0; }

/* 首页概述页特有样式 */
.mod-emoji { font-size: 22px; margin-right: 8px; }
.mod-desc {
  color: var(--fg-muted);
  font-size: 14px;
  margin: 4px 0 16px 0;
  font-style: italic;
}
.home-file-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 6px;
}
.home-file-list li a {
  display: block;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--fg);
  background: var(--bg-sidebar);
  font-size: 13.5px;
  transition: all 0.15s;
}
.home-file-list li a:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

/* 代码 */
.content code {
  background: var(--bg-sidebar);
  padding: 1px 6px; border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--accent);
}
.content pre {
  position: relative;
  background: var(--bg-code);
  padding: 14px 16px;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 14px 0; line-height: 1.5;
}
.content pre code {
  background: transparent; padding: 0;
  color: var(--code-fg); font-size: 13.5px;
}
.copy-btn {
  position: absolute;
  top: 6px; right: 6px;
  background: rgba(255,255,255,0.1);
  color: #ccc;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 4px;
  padding: 2px 8px; font-size: 11px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s;
}
.content pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover { background: rgba(255,255,255,0.2); }
.copy-btn.copied { color: #4ade80; }

/* 高亮 */
mark.search-highlight {
  background: #fef08a; color: #422006;
  padding: 1px 3px; border-radius: 3px;
  transition: background 0.2s, box-shadow 0.2s;
}
[data-theme="dark"] mark.search-highlight {
  background: #fde047; color: #1f1300;
}
mark.search-highlight.current {
  background: #fb923c; color: white;
  box-shadow: 0 0 0 3px rgba(251, 146, 60, 0.3);
}
[data-theme="dark"] mark.search-highlight.current {
  background: #f97316;
}

/* Pygments */
.codehilite { background: var(--bg-code); border-radius: var(--radius); overflow: hidden; }
.codehilite pre { margin: 0; }
.codehilite .hll { background-color: #404040 }
.codehilite .c, .codehilite .c1, .codehilite .cm, .codehilite .cs, .codehilite .cd { color: #6a9955; font-style: italic }
.codehilite .err { color: #f85149 }
.codehilite .k, .codehilite .kc, .codehilite .kd, .codehilite .kn, .codehilite .kp, .codehilite .kr, .codehilite .kt { color: #ff7b72 }
.codehilite .n { color: #e6edf3 }
.codehilite .na { color: #d2a8ff }
.codehilite .nb { color: #79c0ff }
.codehilite .nc { color: #ffa657 }
.codehilite .nd { color: #d2a8ff }
.codehilite .ne { color: #ff7b72 }
.codehilite .nf { color: #d2a8ff }
.codehilite .nl { color: #79c0ff }
.codehilite .nn { color: #ffa657 }
.codehilite .nt { color: #7ee787 }
.codehilite .nv, .codehilite .vc, .codehilite .vg, .codehilite .vi { color: #79c0ff }
.codehilite .o { color: #ff7b72 }
.codehilite .ow { color: #ff7b72; font-weight: bold }
.codehilite .s, .codehilite .s1, .codehilite .s2, .codehilite .sb, .codehilite .sc, .codehilite .sd, .codehilite .se, .codehilite .sh, .codehilite .si, .codehilite .sr, .codehilite .ss { color: #a5d6ff }
.codehilite .m, .codehilite .mb, .codehilite .mf, .codehilite .mh, .codehilite .mi, .codehilite .il { color: #79c0ff }
.codehilite .p { color: #e6edf3 }
.codehilite .ge { font-style: italic }
.codehilite .gs { font-weight: bold }
.codehilite .gh { color: #ff7b72; font-weight: bold }
.codehilite .go { color: #8b949e }
.codehilite .gp { color: #8b949e }
.codehilite .gi { color: #7ee787; background-color: #033a16 }
.codehilite .gt { color: #ff7b72 }

.page-footer {
  display: flex; justify-content: space-between;
  margin-top: 32px; padding-top: 12px;
  font-size: 12px; color: var(--fg-muted);
  border-top: 1px solid var(--border);
}

@media (max-width: 700px) {
  .content-body { padding: 16px; }
  .content { padding: 20px; }
  .content h1 { font-size: 22px; }
  .content h2 { font-size: 18px; }
}