:root {
  --bg: #f7f9fb;
  --surface: #ffffff;
  --ink: #0f1c26;
  --muted: #536472;
  --line: #dce3e9;
  --accent: #0b6e75;
  --accent-ink: #ffffff;
  --accent-soft: #e3f2f2;
  --code-bg: #0f1c26;
  --code-ink: #d7e6ea;
  --radius: 10px;
  --maxw: 1080px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b141b;
    --surface: #111e27;
    --ink: #e6eef2;
    --muted: #97a9b5;
    --line: #22323d;
    --accent: #4fc1c6;
    --accent-ink: #0b141b;
    --accent-soft: #14303a;
    --code-bg: #07101a;
    --code-ink: #d7e6ea;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; background: var(--surface); padding: 6px 10px; z-index: 10; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* header */
.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--ink); text-decoration: none; }
.brand svg { width: 28px; height: 28px; }
.nav { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }
.btn { display: inline-block; padding: 10px 18px; border-radius: 8px; background: var(--accent); color: var(--accent-ink); text-decoration: none; font-weight: 600; border: 1px solid var(--accent); }
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--accent); }
.nav .btn { color: var(--accent-ink); padding: 8px 14px; font-size: 14px; }

/* main */
main { padding: 48px 0 72px; }
.hero { padding: 40px 0 24px; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--accent); background: var(--accent-soft); padding: 4px 10px; border-radius: 999px; }
h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.15; margin: 16px 0 12px; letter-spacing: -0.01em; }
h2 { font-size: 24px; line-height: 1.3; margin: 48px 0 12px; }
h3 { font-size: 18px; margin: 28px 0 8px; }
.lead { font-size: 19px; color: var(--muted); max-width: 720px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin-top: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.card h3 { margin-top: 0; }
.card p { margin: 0; color: var(--muted); }
.steps { counter-reset: step; list-style: none; padding: 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.steps li::before { counter-increment: step; content: counter(step); display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-weight: 700; margin-bottom: 8px; }
.steps strong { display: block; }
.steps span { color: var(--muted); font-size: 15px; }
pre { background: var(--code-bg); color: var(--code-ink); padding: 18px 20px; border-radius: var(--radius); overflow-x: auto; font: 14px/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; }
p code, li code, td code { background: var(--accent-soft); padding: 1px 5px; border-radius: 4px; }
td code { white-space: nowrap; }
.note { color: var(--muted); font-size: 14px; }
.callout { background: var(--accent-soft); border-radius: var(--radius); padding: 16px 20px; margin-top: 40px; }

/* tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); margin: 16px 0; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; background: var(--accent-soft); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }

/* legal pages */
.legal { max-width: 780px; }
.legal h1 { font-size: clamp(28px, 4vw, 38px); }
.legal .updated { color: var(--muted); font-size: 14px; }
.legal li { margin: 4px 0; }

/* footer */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); padding: 32px 0; font-size: 14px; color: var(--muted); }
.site-footer .wrap { display: grid; gap: 16px; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-links a { color: var(--muted); }
.site-footer p { margin: 0; }

@media (max-width: 560px) {
  main { padding: 28px 0 48px; }
  .nav { gap: 14px; }
  h2 { margin-top: 36px; }
}