:root {
  color-scheme: dark;
  --bg: #0b0f19;
  --panel: #111823;
  --panel-2: #151f2b;
  --text: #edf2fb;
  --muted: #98a6b8;
  --line: rgba(148, 163, 184, 0.18);
  --accent: #67c84b;
  --accent-soft: rgba(103, 200, 75, 0.16);
  --code: #0f1722;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  line-height: 1.65;
}
a { color: #86d86c; text-decoration: none; }
a:hover { text-decoration: underline; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 28px;
  background: rgba(11, 15, 25, 0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 750;
}
.brand img { border-radius: 8px; }
.topbar nav { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.topbar nav a { color: var(--muted); }
.shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  max-width: 1220px;
  margin: 0 auto;
}
.sidebar {
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  padding: 30px 20px;
  border-right: 1px solid var(--line);
}
.side-title {
  margin: 0 0 12px 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.side-link {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: #cbd5e1;
  font-size: 14px;
}
.side-link.active, .side-link:hover {
  color: var(--text);
  background: var(--accent-soft);
  text-decoration: none;
}
.content {
  width: 100%;
  max-width: 920px;
  padding: 48px 42px 80px;
}
h1, h2, h3, h4 {
  line-height: 1.2;
  letter-spacing: 0;
}
h1 { margin: 0 0 22px; font-size: 42px; }
h2 { margin: 42px 0 16px; font-size: 28px; border-top: 1px solid var(--line); padding-top: 30px; }
h3 { margin: 30px 0 12px; font-size: 21px; }
h4 { margin: 24px 0 10px; font-size: 17px; }
p, li { color: #c7d2e1; }
ul, ol { padding-left: 24px; }
blockquote {
  margin: 18px 0;
  padding: 14px 16px;
  border-left: 3px solid var(--accent);
  background: var(--panel);
  color: #c7d2e1;
}
code {
  padding: 2px 5px;
  border-radius: 5px;
  background: rgba(148, 163, 184, 0.14);
  color: #f4f7fb;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
}
pre {
  overflow: auto;
  margin: 18px 0;
  padding: 18px;
  border-radius: 10px;
  background: var(--code);
  border: 1px solid var(--line);
}
pre code {
  padding: 0;
  background: transparent;
  color: #e8eef8;
  font-size: 13px;
  line-height: 1.6;
}
.table-wrap {
  overflow-x: auto;
  margin: 18px 0;
  border: 1px solid var(--line);
  border-radius: 10px;
}
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
  background: var(--panel);
}
th, td {
  padding: 11px 13px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th {
  color: var(--text);
  background: var(--panel-2);
  font-size: 13px;
}
td { color: #c7d2e1; font-size: 14px; }
tr:last-child td { border-bottom: 0; }
.footer {
  max-width: 1220px;
  margin: 0 auto;
  padding: 26px 42px 40px 302px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 13px;
}
@media (max-width: 860px) {
  .topbar { height: auto; align-items: flex-start; flex-direction: column; padding: 16px 18px; }
  .topbar nav { flex-wrap: wrap; gap: 14px; }
  .shell { display: block; }
  .sidebar {
    position: static;
    height: auto;
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding: 12px 14px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .side-title { display: none; }
  .side-link { white-space: nowrap; }
  .content { padding: 32px 18px 56px; }
  h1 { font-size: 34px; }
  h2 { font-size: 24px; }
  .footer { padding: 22px 18px 34px; }
}