:root {
  --bg: #ffffff;
  --surface: #f7f5f4;
  --text: #1c1a1a;
  --muted: #5d5757;
  --border: #e6e1df;
  --ruby: #b3123a;
  --ruby-ink: #ffffff;
  --code: #f1eeec;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141213;
    --surface: #1d1a1b;
    --text: #f1eded;
    --muted: #b3abab;
    --border: #322d2e;
    --ruby: #ef4a6d;
    --ruby-ink: #141213;
    --code: #262223;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }
header.top { border-bottom: 1px solid var(--border); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.logo { font-weight: 700; font-size: 20px; color: var(--text); text-decoration: none; letter-spacing: -0.02em; }
.logo span { color: var(--ruby); }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:hover { color: var(--text); }
h1 { font-size: clamp(30px, 6vw, 46px); line-height: 1.12; letter-spacing: -0.025em; margin: 56px 0 16px; }
h2 { font-size: 26px; letter-spacing: -0.015em; margin: 56px 0 14px; }
h3 { font-size: 18px; margin: 0 0 6px; }
p.lead { font-size: 20px; color: var(--muted); max-width: 640px; margin: 0 0 28px; }
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 8px; font-weight: 600;
  text-decoration: none; margin: 0 10px 10px 0; border: 1px solid var(--ruby);
}
.btn.primary { background: var(--ruby); color: var(--ruby-ink); }
.btn.ghost { color: var(--ruby); }
ul.checks { padding-left: 0; list-style: none; }
ul.checks li { padding-left: 28px; position: relative; margin: 8px 0; }
ul.checks li::before { content: "◆"; color: var(--ruby); position: absolute; left: 4px; font-size: 13px; top: 3px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.card p { margin: 0; color: var(--muted); font-size: 15.5px; }
.price { font-size: 34px; font-weight: 700; margin: 4px 0 12px; }
.price small { font-size: 15px; color: var(--muted); font-weight: 400; }
.card ul { padding-left: 18px; margin: 0; font-size: 15.5px; }
.card li { margin: 4px 0; }
.card.featured { border-color: var(--ruby); }
.note { color: var(--muted); font-size: 15px; }
code { background: var(--code); padding: 1px 6px; border-radius: 4px; font-size: 0.9em; }
.placeholder { background: #fff3c4; color: #4a3b00; padding: 2px 6px; border-radius: 4px; }
footer { border-top: 1px solid var(--border); margin-top: 72px; padding: 24px 0 40px; color: var(--muted); font-size: 14.5px; }
footer a { color: var(--muted); margin-right: 16px; }
.legal h1 { font-size: 34px; }
.legal h2 { font-size: 20px; margin-top: 32px; }
@media (max-width: 520px) { nav a { margin-left: 12px; font-size: 14px; } }