:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #1b2330;
  --muted: #5c6778;
  --line: #e6e9ef;
  --brand: #0b5cab;
  --brand-soft: #e8f1fa;
  --ok: #0a7a3e;
  --ok-bg: #e8f6ee;
  --code-bg: #0f1724;
  --code-fg: #d7e0ea;
  --side: #101826;
  --side-text: #c5ced8;
  --side-active: #ffffff;
  --radius: 10px;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font: 15px/1.65 "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.app { display: grid; grid-template-columns: 268px 1fr; min-height: 100%; }
.side {
  background: var(--side);
  color: var(--side-text);
  position: sticky; top: 0; height: 100vh;
  overflow: auto;
  padding: 22px 16px 32px;
}
.logo {
  color: #fff;
  font-weight: 700;
  letter-spacing: .02em;
  font-size: 15px;
  padding: 4px 10px 18px;
  border-bottom: 1px solid #243044;
  margin-bottom: 16px;
}
.logo a { color: #fff; text-decoration: none; }
.logo small {
  display: block;
  margin-top: 4px;
  font-weight: 500;
  color: #8ea0b5;
  font-size: 12px;
}
.nav-group { margin: 14px 8px 6px; font-size: 11px; color: #7d8b9c; letter-spacing: .08em; }
.nav a {
  display: block;
  color: var(--side-text);
  padding: 7px 10px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 13.5px;
}
.nav a:hover, .nav a.active {
  background: #1b2738;
  color: var(--side-active);
  text-decoration: none;
}
.main { max-width: 980px; padding: 28px 40px 80px; }
.crumb { color: var(--muted); font-size: 13px; margin-bottom: 10px; }
h1 { font-size: 28px; line-height: 1.3; margin: 0 0 12px; }
h2 { font-size: 20px; margin: 40px 0 12px; padding-top: 8px; border-top: 1px solid var(--line); }
h2:first-of-type { border-top: 0; }
h3 { font-size: 16px; margin: 24px 0 10px; }
p { margin: 0 0 12px; color: #243044; }
.lead { font-size: 16px; color: var(--muted); max-width: 720px; }
.meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 22px; }
.chip {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  color: var(--muted);
}
.endpoint {
  display: flex; align-items: center; gap: 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin: 16px 0 22px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 14px;
}
.method {
  background: var(--ok-bg);
  color: var(--ok);
  font-weight: 700;
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 4px;
}
.cards { display: grid; gap: 12px; margin: 16px 0 8px; }
.card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  text-decoration: none;
  color: inherit;
}
.card:hover { border-color: #b9c8d9; text-decoration: none; }
.card h3 { margin: 0 0 6px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 10px 0 18px;
  font-size: 13.5px;
}
th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th { background: #f3f5f8; color: #3c4654; font-weight: 600; }
tr:last-child td { border-bottom: 0; }
code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 12.5px;
  background: #eef2f6;
  padding: 1px 5px;
  border-radius: 4px;
}
.req { color: #b42318; font-size: 12px; font-weight: 600; }
.opt { color: #667085; font-size: 12px; }
pre {
  margin: 0 0 16px;
  background: var(--code-bg);
  color: var(--code-fg);
  border-radius: var(--radius);
  padding: 14px 16px;
  overflow: auto;
  font: 12.5px/1.55 ui-monospace, SFMono-Regular, Consolas, monospace;
}
.code-wrap { position: relative; }
.code-label { position: absolute; top: 8px; right: 10px; color: #8ea0b5; font-size: 11px; }
.note {
  background: var(--brand-soft);
  border-left: 3px solid var(--brand);
  padding: 10px 12px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 0 0 16px;
  color: #16324d;
  font-size: 14px;
}
.steps { padding-left: 20px; margin: 8px 0 16px; }
.steps li { margin: 6px 0; }
.toc a { display: inline-block; margin-right: 14px; font-size: 13px; }
footer {
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}
@media (max-width: 880px) {
  .app { grid-template-columns: 1fr; }
  .side { position: relative; height: auto; }
  .main { padding: 20px 16px 48px; }
}