:root {
  --bg: #ffffff;
  --fg: #1d1d1f;
  --muted: #5f6368;
  --line: #e3e3e6;
  --card: #f6f6f8;
  --accent: #0a66d8;
  --code-bg: #f1f1f4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111214;
    --fg: #ececef;
    --muted: #a0a3a9;
    --line: #2a2c30;
    --card: #1a1b1e;
    --accent: #5ba2ff;
    --code-bg: #1f2024;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.88em; }
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; }

.wrap { max-width: 920px; margin: 0 auto; padding: 0 16px; }
section.wrap { padding: 40px 16px; border-top: 1px solid var(--line); }
section.wrap.hero { border-top: 0; padding-top: 56px; }

.wrap.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 20px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--fg); font-weight: 600; }
.brand:hover { text-decoration: none; }
nav { display: flex; gap: 20px; font-size: 15px; }
nav a { color: var(--muted); }

h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.12; letter-spacing: -0.02em; margin: 0 0 20px; }
h2 { font-size: 26px; letter-spacing: -0.01em; margin: 0 0 20px; }
h3 { font-size: 17px; margin: 0 0 6px; }
.lede { font-size: 19px; color: var(--muted); max-width: 680px; margin: 0 0 16px; }
.sub { color: var(--muted); margin: -12px 0 20px; }
.meta { font-size: 14px; color: var(--muted); margin: 0; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.grid article { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.grid p { margin: 0; color: var(--muted); font-size: 15.5px; }

.steps { padding-left: 1.3em; margin: 0 0 24px; }
.steps li { margin-bottom: 10px; }
pre {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  overflow-x: auto;
  margin: 0 0 24px;
}
pre code { background: none; padding: 0; }
.points { padding-left: 1.2em; margin: 0; }
.points li { margin-bottom: 8px; }

.note p { color: var(--muted); max-width: 720px; margin: 0; }

footer.wrap { padding: 28px 16px 48px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }
footer p { margin: 0; }

@media (max-width: 520px) {
  nav { gap: 14px; }
  section.wrap { padding: 32px 16px; }
}