:root {
  --bg: #fbf8f2;
  --ink: #1d2b27;
  --muted: #5c6b66;
  --brand: #14584a;
  --brand-dark: #0d3d33;
  --accent: #e8a93a;
  --card: #ffffff;
  --line: #e4ded1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121a18;
    --ink: #eef2ef;
    --muted: #a3b2ac;
    --brand: #5bc4a9;
    --brand-dark: #3a9e85;
    --accent: #e8a93a;
    --card: #1a2522;
    --line: #2a3733;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  line-height: 1.65;
  font-size: 17px;
}

a { color: var(--brand); }
a:hover { color: var(--brand-dark); }

.wrap { max-width: 920px; margin: 0 auto; padding: 0 20px; }

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--brand);
  text-decoration: none;
}

.logo span { color: var(--accent); }

nav a {
  margin-left: 18px;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
}

nav a:hover { color: var(--brand); }

.hero { padding: 64px 0 40px; }

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.1rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  max-width: 16em;
}

.hero p.lead {
  font-size: 1.2rem;
  color: var(--muted);
  max-width: 36em;
  margin: 0 0 8px;
}

.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin: 8px 0 40px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
}

.card h3 { margin: 0 0 8px; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.97rem; }

h2 { font-size: 1.6rem; letter-spacing: -0.01em; margin: 40px 0 12px; }

.steps { counter-reset: s; padding: 0; list-style: none; }
.steps li {
  counter-increment: s;
  position: relative;
  padding: 0 0 18px 52px;
}
.steps li::before {
  content: counter(s);
  position: absolute;
  left: 0;
  top: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.notice {
  border-left: 4px solid var(--accent);
  background: var(--card);
  padding: 16px 20px;
  border-radius: 0 10px 10px 0;
  margin: 24px 0;
  font-size: 0.97rem;
}

main.doc { padding: 40px 0 20px; }
main.doc h1 { font-size: 2rem; margin: 0 0 6px; letter-spacing: -0.02em; }
main.doc .updated { color: var(--muted); font-size: 0.9rem; margin-bottom: 24px; }
main.doc h2 { font-size: 1.3rem; margin-top: 34px; }
main.doc ul { padding-left: 22px; }
main.doc li { margin-bottom: 6px; }

footer.site {
  border-top: 1px solid var(--line);
  margin-top: 56px;
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 0.9rem;
}

footer.site a { color: var(--muted); }
footer.site p { margin: 4px 0; }