:root {
  color-scheme: dark;
  /* dopagaki-mobile/src/theme.ts の共通カラーに準拠 */
  --background: #0B1018;
  --surface: #111927;
  --surface-raised: #172234;
  --ink: #F7F9FC;
  --muted: #A8B3C2;
  --line: #263449;
  --accent: #64C7FF;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 2rem; }
body { margin: 0; background: var(--background); color: var(--ink); line-height: 1.9; }
a { color: var(--accent); text-underline-offset: .22em; overflow-wrap: anywhere; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; border-radius: 2px; }
.skip { position: absolute; top: -6rem; left: 1rem; padding: .5rem 1rem; background: var(--surface); z-index: 1; }
.skip:focus { top: 1rem; }
.shell { max-width: 1040px; margin-inline: auto; padding-inline: 36px; }
.header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; padding-block: 26px; border-bottom: 1px solid var(--line); }
.brand { color: var(--ink); text-decoration: none; font-size: 22px; font-weight: 700; letter-spacing: .08em; }
.navigation { display: flex; flex-wrap: wrap; gap: 12px 22px; font-size: 13px; }
.navigation a { color: var(--muted); text-decoration: none; }
.navigation a[aria-current="page"] { color: var(--ink); text-decoration: underline; }
.language { display: flex; justify-content: flex-end; gap: 14px; margin-block: 24px 12px; font-size: 13px; }
.language span { color: var(--muted); }
.document { max-width: 760px; margin-inline: auto; padding-bottom: 56px; }
.document h1 { margin: 36px 0 24px; font-size: clamp(25px, 4.4vw, 34px); line-height: 1.6; letter-spacing: .025em; }
.document-brand { display: block; margin-bottom: 8px; color: var(--muted); font-size: 14px; font-weight: 400; letter-spacing: .04em; }
.document h2 { margin: 44px 0 14px; padding-top: 28px; border-top: 1px solid var(--line); font-size: 20px; line-height: 1.7; }
.document p { margin: 16px 0; }
.document ul { padding-left: 1.5em; }
.document li { padding-left: .15em; margin: 9px 0; }
.eyebrow { margin: 0; color: var(--accent); font-size: 12px; letter-spacing: .14em; }
.hero { padding: 64px 0 40px; }
.hero h1 { margin: 0; font-size: clamp(32px, 6vw, 48px); line-height: 1.4; font-weight: 650; letter-spacing: .04em; }
.hero p:last-child { color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 0 0 46px; }
.card { display: flex; flex-direction: column; padding: 26px 24px; border: 1px solid var(--line); border-radius: 6px; text-decoration: none; background: var(--surface); }
.card:hover { border-color: var(--accent); background: var(--surface-raised); }
.card span { color: var(--muted); font-size: 12px; letter-spacing: .07em; }
.card strong { margin: 8px 0; color: var(--ink); font-size: 18px; font-weight: 600; }
.card em { align-self: flex-end; font-style: normal; }
.contact { padding-bottom: 48px; color: var(--muted); font-size: 14px; }
.footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px; padding-block: 26px 34px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.footer p { margin: 0; }
.footer nav { display: flex; flex-wrap: wrap; gap: 16px; }
@media (max-width: 640px) {
  .shell { padding-inline: 22px; }
  .header { padding-block: 22px; gap: 14px; }
  .brand { font-size: 21px; }
  .navigation { width: 100%; gap: 12px 20px; font-size: 12px; }
  .language { margin-top: 18px; }
  .document { font-size: 15px; }
  .document h1 { margin-top: 26px; }
  .document h2 { font-size: 18px; }
  .hero { padding-top: 40px; }
  .cards { grid-template-columns: 1fr; gap: 12px; }
  .card { display: grid; grid-template-columns: 1fr auto; padding: 18px 22px; }
  .card span { grid-column: 1; }
  .card strong { grid-column: 1; margin: 3px 0; }
  .card em { grid-column: 2; grid-row: 1 / 3; align-self: center; }
}
@media print {
  :root { color-scheme: light; --ink: #000; --muted: #333; --line: #ccc; }
  body { background: white; color: black; }
  .header, .language, .footer, .skip { display: none; }
  .shell { max-width: none; padding: 0; }
  .document { max-width: none; font-size: 11pt; }
  .document h2 { break-after: avoid; }
  a { color: inherit; }
}