:root {
  color-scheme: light;
  --text: #1d1d20;
  --muted: #6f7178;
  --line: #e6e8ee;
  --soft: #f6f7f9;
  --panel: #ffffff;
  --shadow: 0 18px 55px rgba(30, 35, 44, 0.1);
  --accent: #2563eb;
  --code-bg: #0f172a;
  --code-fg: #e2e8f0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, rgba(247, 248, 250, 0.96), #ffffff 46%), #ffffff;
  color: var(--text);
  font-family: Lato, "Helvetica Neue", Arial, Helvetica, "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.docs-shell {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto;
  padding: 42px 0 64px;
}

.docs-header { margin-bottom: 28px; }
.docs-header h1 { font-size: 30px; margin: 8px 0 6px; letter-spacing: -0.01em; }
.docs-header .docs-sub { color: var(--muted); margin: 0; }
.docs-back { font-size: 14px; color: var(--muted); }

.docs-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px 28px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}

.docs-card h2 {
  font-size: 19px;
  margin: 0 0 14px;
  letter-spacing: -0.005em;
}

.docs-card p { margin: 0 0 12px; }

.docs-card pre {
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 16px 18px;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.55;
  margin: 12px 0;
}
.docs-card pre code { background: transparent; color: inherit; padding: 0; font-size: inherit; }

.docs-card code {
  background: var(--soft);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: #0f172a;
}

.docs-card ol { margin: 8px 0 4px; padding-left: 22px; }
.docs-card ol li { margin-bottom: 8px; }

.kv { margin: 0; display: grid; grid-template-columns: 150px 1fr; gap: 8px 16px; }
.kv dt { color: var(--muted); font-size: 14px; }
.kv dd { margin: 0; }

.badge {
  display: inline-block;
  background: #eef2ff;
  color: #1e40af;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12.5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  margin-right: 8px;
}
.hint { color: var(--muted); font-size: 13px; }

.note {
  background: #fffbeb;
  border-left: 3px solid #f59e0b;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 14px;
  color: #78350f;
  margin: 12px 0 0;
}

.docs-footer {
  text-align: center;
  margin-top: 28px;
  color: var(--muted);
  font-size: 14px;
}
.docs-footer a { color: var(--muted); }
.docs-footer span { margin: 0 10px; }

@media (max-width: 540px) {
  .kv { grid-template-columns: 1fr; }
  .kv dt { font-size: 13px; }
  .docs-card { padding: 20px; }
}