:root {
  --bg: #f5f8f9;
  --surface: #ffffff;
  --surface-2: #e7eff2;
  --text: #0d1c26;
  --muted: #46606e;
  --border: #cddbe1;
  --accent: #0b6b63;
  --on-accent: #ffffff;
  --link: #0b6b63;
  --focus: #0b6b63;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #081521;
    --surface: #0e1f2c;
    --surface-2: #122a39;
    --text: #e8f1f4;
    --muted: #a7bcc7;
    --border: #21394a;
    --accent: #71e0ce;
    --on-accent: #06231f;
    --link: #71e0ce;
    --focus: #f5c477;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--link); text-underline-offset: 2px; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: var(--surface); padding: 8px 12px; z-index: 10; }

.top { border-bottom: 1px solid var(--border); background: var(--surface); }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 18px; }
nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
nav a:hover { color: var(--text); }

.hero { padding: 72px 20px 48px; }
.eyebrow { color: var(--accent); font-weight: 600; font-size: 14px; letter-spacing: .04em; text-transform: uppercase; margin: 0 0 12px; }
h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.15; margin: 0 0 20px; max-width: 18em; }
h2 { font-size: 26px; line-height: 1.25; margin: 0 0 16px; }
h3 { font-size: 18px; margin: 0 0 10px; }
.lead { font-size: 19px; color: var(--muted); max-width: 44em; margin: 0 0 28px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.button {
  display: inline-block; padding: 11px 18px; border-radius: 8px; font-weight: 600; text-decoration: none;
  background: var(--accent); color: var(--on-accent); border: 1px solid var(--accent);
}
.button.ghost { background: transparent; color: var(--accent); }

section { padding: 40px 20px; }
.band { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; margin-top: 8px; margin-bottom: 8px; }
.checks { padding-left: 1.2em; }
.checks li { margin: 6px 0; }
.steps { padding-left: 1.3em; }
.steps li { margin: 10px 0; }
.code {
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px;
  overflow-x: auto; font: 14px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.note { color: var(--muted); font-size: 15px; }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
@media (max-width: 720px) { .cols { grid-template-columns: 1fr; } .hero { padding-top: 48px; } }

details { border-top: 1px solid var(--border); padding: 12px 0; }
details:last-of-type { border-bottom: 1px solid var(--border); }
summary { cursor: pointer; font-weight: 600; }
details p { color: var(--muted); margin: 10px 0 0; }

.foot { padding: 32px 20px 48px; color: var(--muted); font-size: 15px; border-top: 1px solid var(--border); margin-top: 32px; }
.foot p { margin: 4px 0; }