:root {
  --bg: #0b0b12;
  --panel: #13131d;
  --ink: #eceef5;
  --muted: #9aa0b4;
  --accent: #8b5cf6;
  --accent-2: #06b6d4;
  --border: #23232f;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafaff;
    --panel: #ffffff;
    --ink: #15151f;
    --muted: #5c6277;
    --border: #e6e6ef;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header.site {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 24px; max-width: 860px; margin: 0 auto;
  border-bottom: 1px solid var(--border);
}
header.site .brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; color: var(--ink);
}
header.site .brand:hover { text-decoration: none; }
header.site .brand .logo {
  width: 28px; height: 28px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 14px;
}
nav a { margin-left: 18px; color: var(--muted); font-size: 14px; }
nav a:hover { color: var(--ink); text-decoration: none; }
main.doc { max-width: 760px; margin: 0 auto; padding: 48px 24px 32px; }
main.doc h1 {
  font-size: clamp(28px, 4.5vw, 40px); letter-spacing: -0.02em;
  margin: 0 0 8px; line-height: 1.15;
}
main.doc .updated { color: var(--muted); font-size: 14px; margin: 0 0 32px; }
main.doc h2 {
  font-size: 20px; margin: 40px 0 12px; letter-spacing: -0.01em;
}
main.doc h3 { font-size: 16px; margin: 24px 0 8px; }
main.doc p, main.doc li { color: var(--ink); font-size: 16px; }
main.doc ul { padding-left: 20px; }
main.doc li { margin-bottom: 6px; }
main.doc .note {
  background: var(--panel); border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 16px 18px; border-radius: 10px; margin: 20px 0; color: var(--muted);
  font-size: 15px;
}
main.doc code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--panel); border: 1px solid var(--border);
  padding: 2px 6px; border-radius: 4px; font-size: 13px;
}
footer {
  padding: 40px 24px 60px; max-width: 860px; margin: 0 auto;
  border-top: 1px solid var(--border); color: var(--muted); font-size: 13px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
}
footer a { color: var(--muted); margin-right: 16px; }
footer a:hover { color: var(--ink); }
@media (max-width: 560px) {
  nav a { margin-left: 12px; }
  footer { flex-direction: column; }
}