:root {
  --bg: #fbfaf7; --surface: #ffffff; --text: #1d1c1a; --muted: #6b6760;
  --line: #e7e3dc; --accent: #d9480f; --accent-ink: #ffffff; --soft: #fff1e8;
  --radius: 14px; --max: 1080px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #161513; --surface: #1f1e1b; --text: #f2efe9; --muted: #a8a299;
    --line: #34312c; --accent: #ff7a3d; --accent-ink: #161513; --soft: #2a1f18; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: inherit; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
header.top { border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.logo { font-weight: 800; font-size: 22px; letter-spacing: -0.02em; text-decoration: none; }
.logo span { color: var(--accent); }
nav.menu { display: flex; gap: 20px; align-items: center; font-size: 15px; }
nav.menu a { text-decoration: none; color: var(--muted); }
nav.menu a:hover { color: var(--text); }
.btn { display: inline-block; padding: 12px 22px; border-radius: 999px; background: var(--accent);
  color: var(--accent-ink) !important; font-weight: 600; text-decoration: none; border: 0; cursor: pointer; }
.btn.ghost { background: transparent; color: var(--text) !important; border: 1px solid var(--line); }
.hero { padding: 80px 0 64px; }
.hero h1 { font-size: clamp(34px, 6vw, 58px); line-height: 1.08; letter-spacing: -0.03em; margin: 0 0 20px; max-width: 16ch; }
.hero p.lead { font-size: 20px; color: var(--muted); max-width: 46ch; margin: 0 0 32px; }
.hero .cta { display: flex; gap: 12px; flex-wrap: wrap; }
.note { font-size: 14px; color: var(--muted); margin-top: 14px; }
section { padding: 64px 0; border-top: 1px solid var(--line); }
section h2 { font-size: clamp(26px, 4vw, 36px); letter-spacing: -0.02em; margin: 0 0 12px; }
section p.sub { color: var(--muted); margin: 0 0 36px; max-width: 60ch; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card h3 { margin: 0 0 8px; font-size: 19px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.step-n { display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 50%;
  background: var(--soft); color: var(--accent); font-weight: 700; margin-bottom: 12px; }
.price { font-size: 32px; font-weight: 800; margin: 8px 0; }
.price small { font-size: 15px; font-weight: 500; color: var(--muted); }
.card ul { padding-left: 18px; margin: 12px 0 20px; color: var(--muted); font-size: 15px; }
.card.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
details { border-bottom: 1px solid var(--line); padding: 16px 0; }
summary { cursor: pointer; font-weight: 600; }
details p { color: var(--muted); margin: 10px 0 0; }
footer { border-top: 1px solid var(--line); padding: 40px 0; font-size: 14px; color: var(--muted); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.doc { max-width: 760px; padding: 48px 20px 80px; margin: 0 auto; }
.doc h1 { font-size: 36px; letter-spacing: -0.02em; margin: 0 0 8px; }
.doc h2 { font-size: 22px; margin: 36px 0 8px; }
.doc .meta { color: var(--muted); font-size: 15px; }
.todo { background: #fff3bf; color: #5c4400; padding: 0 4px; border-radius: 4px; }
@media (max-width: 640px) {
  nav.menu a:not(.btn) { display: none; }
  .hero { padding: 48px 0 40px; }
}