:root {
  --green: #1f6e5a;
  --cream: #f5f1e8;
  --ink: #1a1a1a;
  --muted: #6b6b6b;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--cream);
  color: var(--ink);
  line-height: 1.65;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }
header.site {
  padding: 20px 0;
  border-bottom: 1px solid rgba(31, 110, 90, 0.12);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; }
.brand { font-weight: 800; font-size: 20px; color: var(--green); text-decoration: none; letter-spacing: -0.02em; }
nav a { color: var(--muted); text-decoration: none; margin-left: 20px; font-size: 14px; }
nav a:hover { color: var(--green); }
.hero { text-align: center; padding: 72px 0 48px; }
.hero h1 { font-size: 42px; line-height: 1.15; letter-spacing: -0.02em; }
.hero p.sub { color: var(--muted); font-size: 18px; margin-top: 12px; }
.badge {
  display: inline-block; margin-top: 28px; padding: 14px 28px;
  background: var(--green); color: #fff; border-radius: 12px;
  text-decoration: none; font-weight: 600;
}
.badge.soon { background: #9aa39f; cursor: default; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding: 32px 0 64px; }
.step { background: #fff; border-radius: 16px; padding: 24px 18px; text-align: center; box-shadow: 0 4px 14px rgba(0,0,0,0.04); }
.step .num {
  width: 36px; height: 36px; line-height: 36px; margin: 0 auto 10px;
  background: rgba(31,110,90,0.1); color: var(--green);
  border-radius: 50%; font-weight: 700;
}
.step h3 { font-size: 16px; margin-bottom: 6px; }
.step p { font-size: 13px; color: var(--muted); }
main.doc { background: #fff; border-radius: 16px; padding: 48px; margin: 40px auto; box-shadow: 0 4px 14px rgba(0,0,0,0.04); }
main.doc h1 { font-size: 30px; margin-bottom: 4px; letter-spacing: -0.02em; }
main.doc .updated { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
main.doc h2 { font-size: 20px; margin: 32px 0 10px; color: var(--green); }
main.doc h3 { font-size: 16px; margin: 20px 0 8px; }
main.doc p, main.doc li { font-size: 15px; margin-bottom: 10px; }
main.doc ul { padding-left: 22px; margin-bottom: 12px; }
main.doc strong { font-weight: 650; }
footer.site { padding: 32px 0 48px; text-align: center; color: var(--muted); font-size: 13px; }
footer.site a { color: var(--green); text-decoration: none; margin: 0 8px; }
@media (max-width: 640px) {
  .steps { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  main.doc { padding: 28px 20px; }
}