:root {
  --bg: #09090f;
  --surface: #111118;
  --surface2: #17171f;
  --border: #1e1e2e;
  --border2: #2a2a3d;
  --text: #ededf5;
  --text-dim: #9292aa;
  --text-muted: #55556d;
  --accent: #60a5fa;
  --accent-dim: rgba(96, 165, 250, 0.12);
  --danger: #fb7185;
  --mono: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  --body: "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

/* 亮色主题只替换语义色，布局和各手册强调色保持不变。 */
:root[data-theme="light"] {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface2: #eef2f7;
  --border: #e2e7ef;
  --border2: #cfd7e3;
  --text: #172033;
  --text-dim: #58647a;
  --text-muted: #8792a5;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: radial-gradient(ellipse 900px 500px at 50% -180px, color-mix(in srgb, var(--accent) 8%, transparent), transparent 70%), var(--bg);
  font-family: var(--body);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  background-image: linear-gradient(rgba(255,255,255,.012) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.012) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

button, input { font: inherit; }

.wrapper {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 26px 0 72px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 52px;
}

.brand, .back-link, .theme-toggle {
  color: var(--text-muted);
  font: 12px var(--mono);
  letter-spacing: .08em;
  text-decoration: none;
}

.topbar-actions { display: flex; align-items: center; gap: 16px; }
.theme-toggle { padding: 5px 10px; background: var(--surface); border: 1px solid var(--border2); border-radius: 16px; cursor: pointer; }
.theme-toggle:hover { color: var(--accent); }

.brand::before {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  content: "";
}

.back-link:hover { color: var(--accent); }
.hero { margin-bottom: 32px; }

.eyebrow {
  margin-bottom: 12px;
  color: var(--accent);
  font: 11px var(--mono);
  letter-spacing: .16em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 14px;
  font-size: clamp(34px, 6vw, 62px);
  line-height: 1;
  letter-spacing: -.04em;
}

.subtitle {
  max-width: 680px;
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.8;
}

.toolbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto;
  gap: 14px;
  padding: 14px 0;
  background: rgba(9, 9, 15, .9);
  backdrop-filter: blur(16px);
}

:root[data-theme="light"] .toolbar { background: rgba(245, 247, 251, .92); }

.search-wrap { position: relative; }
.search-wrap::before { position: absolute; top: 50%; left: 15px; color: var(--text-muted); content: "⌕"; transform: translateY(-50%); }

.search {
  width: 100%;
  padding: 11px 14px 11px 40px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 9px;
  outline: none;
}

.search:focus { border-color: color-mix(in srgb, var(--accent) 55%, transparent); box-shadow: 0 0 0 3px var(--accent-dim); }
.count { align-self: center; color: var(--text-muted); font: 11px var(--mono); white-space: nowrap; }

.tabs {
  display: flex;
  gap: 8px;
  margin: 8px 0 24px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.tab {
  flex: 0 0 auto;
  padding: 6px 13px;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid var(--border2);
  border-radius: 20px;
  font-size: 12px;
  cursor: pointer;
}

.tab:hover { color: var(--text); background: var(--surface2); }
.tab.active { color: var(--accent); background: var(--accent-dim); border-color: color-mix(in srgb, var(--accent) 45%, transparent); }

.section-card {
  margin-bottom: 14px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.section-card[hidden] { display: none; }

.section-header {
  display: grid;
  grid-template-columns: 38px 1fr auto 18px;
  gap: 12px;
  align-items: center;
  width: 100%;
  padding: 16px 20px;
  color: var(--text);
  text-align: left;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.section-header:hover { background: rgba(255,255,255,.015); }

.section-icon {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--accent);
  background: var(--accent-dim);
  border-radius: 9px;
  font: 16px var(--mono);
}

.section-title { font-size: 15px; font-weight: 600; }
.section-count { color: var(--text-muted); font: 10px var(--mono); }
.chevron { color: var(--text-muted); transition: transform .18s; }
.section-card.collapsed .chevron { transform: rotate(-90deg); }
.section-card.collapsed .section-body { display: none; }
.section-body { border-top: 1px solid var(--border); }

.command-row {
  display: grid;
  grid-template-columns: minmax(300px, 1.15fr) minmax(240px, .85fr) 42px;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.command-row:last-child { border-bottom: 0; }
.command-row:hover { background: rgba(255,255,255,.014); }

.command-code {
  padding: 15px 20px;
  overflow-x: auto;
  color: #b8d7ff;
  font: 12px/1.65 var(--mono);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

:root[data-theme="light"] .command-code { color: #185abd; }

.command-desc {
  padding: 15px 20px;
  color: var(--text-dim);
  border-left: 1px solid var(--border);
  font-size: 12px;
  line-height: 1.65;
}

.copy { width: 30px; height: 30px; padding: 0; color: var(--text-muted); background: transparent; border: 0; border-radius: 6px; cursor: pointer; }
.copy:hover { color: var(--accent); background: var(--accent-dim); }
.copy.copied { color: #4ade80; }
.danger .command-code { color: var(--danger); }

.note {
  margin: 0 20px 16px;
  padding: 12px 14px;
  color: var(--text-dim);
  background: rgba(244, 185, 66, .07);
  border: 1px solid rgba(244, 185, 66, .18);
  border-radius: 8px;
  font-size: 12px;
  line-height: 1.7;
}

.empty { display: none; padding: 50px 20px; color: var(--text-muted); text-align: center; border: 1px dashed var(--border2); border-radius: 12px; }
footer { margin-top: 44px; color: var(--text-muted); font: 10px var(--mono); text-align: center; }

@media (max-width: 720px) {
  .wrapper { width: min(100% - 24px, 1120px); }
  .topbar { margin-bottom: 38px; }
  .toolbar { grid-template-columns: 1fr; }
  .count { display: none; }
  .section-header { grid-template-columns: 36px 1fr 16px; padding: 14px; }
  .section-count { display: none; }
  .command-row { grid-template-columns: 1fr 40px; }
  .command-desc { grid-column: 1 / -1; grid-row: 2; padding: 0 14px 13px; border-left: 0; }
  .command-code { padding: 13px 14px 7px; }
}