:root {
  --bg: #f7f5f2;
  --surface: #ffffff;
  --text: #1a1a1d;
  --muted: #5f5f6a;
  --line: #e4e0da;
  --accent: #e8572a;
  --max: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f12;
    --surface: #18181c;
    --text: #f2f2f4;
    --muted: #a3a3ad;
    --line: #2a2a30;
    --accent: #ff6a3d;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

a { color: var(--accent); }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

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

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 18px;
  padding-bottom: 18px;
}

.brand {
  font-weight: 700;
  font-size: 20px;
  color: var(--text);
  text-decoration: none;
}

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

nav.site a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 18px;
  font-size: 15px;
}

nav.site a:hover,
nav.site a[aria-current="page"] { color: var(--text); }

main { padding: 48px 0 64px; }

.hero h1 {
  font-size: clamp(34px, 7vw, 52px);
  line-height: 1.1;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}

.hero p.lead {
  font-size: 20px;
  color: var(--muted);
  margin: 0 0 28px;
}

.badge {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 15px;
}

.features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
}

.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

article h1 { font-size: 34px; line-height: 1.2; margin: 0 0 6px; }
article .updated { color: var(--muted); margin: 0 0 32px; font-size: 15px; }
article h2 { font-size: 22px; margin: 36px 0 10px; }
article h3 { font-size: 18px; margin: 24px 0 8px; }
article ul { padding-left: 22px; }
article li { margin-bottom: 6px; }

.note {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  padding: 14px 18px;
  margin: 20px 0;
}

footer.site {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

footer.site .wrap {
  padding-top: 24px;
  padding-bottom: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: space-between;
}

footer.site a { color: var(--muted); }

@media (max-width: 560px) {
  .features { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  nav.site a { margin-left: 12px; font-size: 14px; }
  body { font-size: 16px; }
}