:root {
  --ink: #f2f2f2;
  --muted: #a8a8ad;
  --paper: #000;
  --surface: #1c1c1e;
  --line: #3a3a3c;
  --accent: #ff8fab;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Noto Sans JP', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.8;
  letter-spacing: 0.03em;
}
main, header, footer { max-width: 720px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 24px; }
.logo { font-family: 'Dela Gothic One', sans-serif; font-size: 22px; color: var(--ink); text-decoration: none; letter-spacing: 0; }
.hero { text-align: center; padding: 48px 0 24px; }
.hero h1 { font-size: 28px; line-height: 1.4; margin: 0 0 12px; }
.hero img { width: 200px; max-width: 60%; margin: 24px auto 0; display: block; }
.lead { color: var(--muted); margin: 0; }
h1 { font-size: 24px; line-height: 1.4; margin: 32px 0 16px; }
h2 { font-size: 18px; margin: 40px 0 12px; }
a { color: var(--ink); text-underline-offset: 4px; }
ol.steps { padding-left: 1.4em; }
ol.steps li { margin: 8px 0; }
.note { color: var(--muted); font-size: 13px; }
.todo { background: #3a2a00; color: #ffd27a; padding: 0 4px; }
table { width: 100%; border-collapse: collapse; margin: 16px 0; }
th, td { border-top: 1px solid var(--line); padding: 12px 8px; text-align: left; vertical-align: top; }
th { width: 34%; font-weight: 700; }
@media (max-width: 480px) {
  th, td { display: block; width: 100%; padding: 8px 0; }
  td { border-top: 0; padding-top: 0; }
}
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.card { background: var(--surface); border: 1px solid var(--line); padding: 16px; }
.card .price { font-weight: 700; font-size: 18px; }
footer { border-top: 1px solid var(--line); margin-top: 64px; padding-top: 16px; padding-bottom: 48px; font-size: 13px; color: var(--muted); }
footer nav a { margin-right: 16px; display: inline-block; }