:root {
  color-scheme: light dark;
  --bg: #f7f7f8;
  --card: rgba(255,255,255,.82);
  --text: #111214;
  --muted: #666a73;
  --line: rgba(0,0,0,.08);
  --accent: #2f6df6;
  --max: 1040px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101114;
    --card: rgba(28,29,34,.86);
    --text: #f5f6f8;
    --muted: #a9adb7;
    --line: rgba(255,255,255,.10);
    --accent: #7aa2ff;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(calc(100% - 32px), var(--max)); margin: 0 auto; }
nav {
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
}
nav .wrap {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 58px;
}
.brand { font-weight: 800; letter-spacing: -.02em; color: var(--text); }
.links { display: flex; gap: 18px; font-size: 14px; }
.hero {
  padding: 96px 0 72px;
  text-align: center;
}
.hero h1 {
  margin: 0 auto 18px;
  max-width: 760px;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.03;
  letter-spacing: -.055em;
}
.hero p {
  max-width: 680px;
  margin: 0 auto;
  font-size: 20px;
  color: var(--muted);
}
.badge {
  display: inline-block;
  padding: 7px 12px;
  margin-bottom: 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 20px 0 72px;
}
.card {
  padding: 24px;
  border-radius: 22px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: 0 14px 42px rgba(0,0,0,.04);
}
.card h2, .card h3 { margin-top: 0; letter-spacing: -.02em; }
.card p { color: var(--muted); }
.section { padding: 56px 0; }
.section h2 { font-size: 36px; letter-spacing: -.04em; margin-bottom: 12px; }
.section > .wrap > p { max-width: 760px; color: var(--muted); }
.price-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
  max-width: 760px; margin: 28px auto;
}
.price { font-size: 34px; font-weight: 800; letter-spacing: -.04em; }
.small { font-size: 13px; color: var(--muted); }
.notice {
  border-left: 4px solid var(--accent);
  padding: 14px 18px;
  background: var(--card);
  border-radius: 10px;
}
footer {
  border-top: 1px solid var(--line);
  padding: 34px 0 48px;
  color: var(--muted);
  font-size: 14px;
}
footer .wrap {
  display: flex; gap: 18px; flex-wrap: wrap; justify-content: space-between;
}
.prose {
  max-width: 820px;
  margin: 0 auto;
  padding: 60px 0 90px;
}
.prose h1 { font-size: 42px; letter-spacing: -.04em; }
.prose h2 { margin-top: 40px; }
.prose p, .prose li { color: var(--muted); }
@media (max-width: 760px) {
  .grid, .price-grid { grid-template-columns: 1fr; }
  .links { gap: 10px; font-size: 12px; }
  .hero { padding-top: 70px; }
}