:root {
  --bg: #ffffff;
  --surface: #f7f8fa;
  --fg: #101318;
  --muted: #5b6270;
  --line: #e3e6ec;
  --accent: #2b53e8;
  --accent-soft: #eef1fe;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0f13;
    --surface: #14171d;
    --fg: #e9ebef;
    --muted: #9aa2b1;
    --line: #232830;
    --accent: #8aa4ff;
    --accent-soft: #171c2b;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 47rem; margin: 0 auto; padding: 0 1.5rem; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); }
.site-header .wrap { display: flex; align-items: center; gap: 1.5rem; height: 4.25rem; }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 600; letter-spacing: -.01em; color: var(--fg); text-decoration: none; }
.brand img { width: 28px; height: 28px; border-radius: 6px; }
.site-nav { margin-left: auto; display: flex; gap: 1.4rem; font-size: .925rem; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover { color: var(--fg); }

/* Type */
main { padding: 3.5rem 0 1rem; }
h1 { font-size: 2.1rem; line-height: 1.2; letter-spacing: -.025em; margin: 0 0 .75rem; }
h2 { font-size: 1.2rem; letter-spacing: -.01em; margin: 3rem 0 .85rem; padding-top: 1.75rem; border-top: 1px solid var(--line); }
h2:first-of-type { margin-top: 2.5rem; }
h3 { font-size: 1rem; margin: 1.75rem 0 .4rem; }
p { margin: 0 0 1rem; }
.lead { font-size: 1.1rem; color: var(--muted); margin: 0 0 1.25rem; }
.meta { color: var(--muted); font-size: .9rem; margin: 0 0 2rem; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { padding-left: 1.3rem; margin: 0 0 1rem; }
li { margin: .4rem 0; }
strong { font-weight: 600; }
code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: .875em;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: .05em .35em;
}

/* Table */
.table-scroll { overflow-x: auto; margin: 1.25rem 0; }
table { border-collapse: collapse; width: 100%; font-size: .93rem; min-width: 34rem; }
th, td { text-align: left; vertical-align: top; padding: .7rem .9rem; border-bottom: 1px solid var(--line); }
th { font-weight: 600; background: var(--surface); white-space: nowrap; }
tbody tr:last-child td { border-bottom: none; }

/* Callout */
.note { border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 8px 8px 0; padding: .9rem 1.1rem; margin: 1.5rem 0; }
.note p { margin: 0; }

/* Footer */
.site-footer { margin-top: 4rem; border-top: 1px solid var(--line); }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: .5rem 1.4rem; padding-top: 1.75rem; padding-bottom: 3rem; color: var(--muted); font-size: .9rem; }
.site-footer a { color: var(--muted); }
.site-footer .spacer { margin-left: auto; }

@media (max-width: 34rem) {
  .site-header .wrap { height: auto; padding-top: 1rem; padding-bottom: 1rem; flex-wrap: wrap; gap: .75rem 1.1rem; }
  .site-nav { margin-left: 0; width: 100%; }
  h1 { font-size: 1.75rem; }
}