:root { color-scheme: light; --ink: #24495c; --muted: #526f7e; --blue: #a9dff6; --pale: #eaf8ff; --line: #cce6f1; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; color: var(--ink); background: #fff; font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif; line-height: 1.9; }
a { color: inherit; text-underline-offset: 5px; }
a:focus-visible { outline: 3px solid #146189; outline-offset: 5px; }
.wrap { width: min(1120px, calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 10; background: white; padding: 10px 18px; }
.skip-link:focus { top: 10px; }
.header { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--line); }
.brand { font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: 27px; letter-spacing: .12em; text-decoration: none; font-weight: 700; }
.brand span { font-family: "Yu Gothic", sans-serif; font-size: 11px; letter-spacing: .1em; font-weight: 400; margin-left: 10px; }
.event-label { color: var(--muted); font-size: 12px; }
.hero { display: grid; grid-template-columns: 1fr 1.15fr; align-items: center; gap: 44px; padding-block: 70px 80px; }
.eyebrow { margin: 0 0 20px; color: #416d82; font-size: 11px; font-weight: 700; letter-spacing: .18em; }
h1, h2, .game-title, .story-quote { font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-weight: 500; }
h1 { margin: 0 0 26px; font-size: clamp(26px, 3vw, 38px); line-height: 1.65; letter-spacing: .055em; }
.game-title { margin: 0 0 16px; font-size: 28px; letter-spacing: .15em; }
.game-title span { display: inline-block; margin-left: 8px; font-size: 15px; letter-spacing: .04em; }
.intro { margin: 0 0 28px; color: var(--muted); font-size: 14px; }
.play-button { display: flex; align-items: center; justify-content: space-between; gap: 20px; width: min(100%, 340px); min-height: 60px; padding: 14px 24px; border: 1px solid #8bc9e4; border-radius: 4px; background: var(--blue); color: #173f53; font-size: 16px; font-weight: 700; text-decoration: none; transition: background .2s; }
.play-button:hover { background: #c2eaff; }
.button-note { margin: 10px 0 0; color: var(--muted); font-size: 12px; }
.smartphone-notice { margin-top: 20px; padding: 16px 18px; border: 1px solid #8bc9e4; border-left: 4px solid #509cbe; border-radius: 4px; background: var(--pale); color: var(--ink); text-align: left; font-size: 14px; line-height: 1.85; }
.smartphone-notice p { margin: 0; }
.smartphone-notice p + p { margin-top: 8px; }
.smartphone-notice-title { font-weight: 700; }
.smartphone-notice strong { color: #173f53; }
.play-inner .smartphone-notice { max-width: 600px; margin-inline: auto; background: #fff; }
.hero-art { margin: 0; }
.hero-art img { display: block; width: 100%; height: auto; aspect-ratio: auto; object-fit: cover; object-position: center; border-radius: 3px; }
.hero-art figcaption { margin-top: 10px; font-size: 10px; color: var(--muted); letter-spacing: .13em; text-align: right; }
.story { display: grid; grid-template-columns: 1fr 1.6fr; gap: 60px; padding-block: 56px 64px; border-top: 1px solid var(--line); }
h2 { margin: 0; font-size: clamp(24px, 2.4vw, 30px); line-height: 1.7; letter-spacing: .05em; }
.story-text { font-size: 14px; }
.story-text p { margin: 0 0 20px; }
.story-text .story-quote { margin-bottom: 0; font-size: 22px; }
.info-section { display: grid; grid-template-columns: 1fr 1.6fr; gap: 60px; padding-block: 44px; border-top: 1px solid var(--line); }
.info-section > * { min-width: 0; }
.info-heading h2 { font-size: 25px; }
.info-list { margin: 0; font-size: 14px; }
.info-list > div { display: grid; grid-template-columns: minmax(110px, 1fr) 2fr; gap: 20px; padding-block: 14px; border-bottom: 1px solid var(--line); }
.info-list > div:first-child { padding-top: 0; }
.info-list dt { font-weight: 700; }
.info-list dd { margin: 0; overflow-wrap: anywhere; }
.info-content { font-size: 14px; }
.info-content p { margin: 0 0 12px; }
.info-note { color: var(--muted); font-size: 13px; }
.pending-text { font-size: 18px; }
.disclosure { display: grid; gap: 28px; }
.disclosure h3 { margin: 0 0 12px; font-size: 16px; }
.ai-list { margin-top: 20px; }
.screenshots-section { padding-block: 44px 56px; border-top: 1px solid var(--line); }
.screenshot-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 24px; }
.screenshot-card { margin: 0; }
.screenshot-placeholder { aspect-ratio: 16 / 9; display: flex; flex-direction: column; align-items: center; justify-content: center; background: var(--pale); border: 1px solid var(--line); border-radius: 3px; color: var(--muted); }
.screenshot-placeholder span { font-size: 24px; letter-spacing: .12em; }
.screenshot-placeholder p { margin: 8px 12px 0; font-size: 13px; text-align: center; }
.screenshot-card img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 3px; }
.screenshot-card figcaption { margin-top: 10px; color: var(--muted); font-size: 12px; }
.play-section { background: var(--pale); border-block: 1px solid var(--line); }
.play-inner { padding-block: 56px; text-align: center; }
.play-inner > p:not(.eyebrow):not(.button-note) { color: var(--muted); font-size: 14px; margin: 18px 0 26px; }
.play-inner .play-button { margin-inline: auto; }
.footer { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-block: 28px; font-size: 12px; }
.footer small { color: var(--muted); font-size: 11px; }
.mobile-play { display: none; }
@media (max-width: 760px) {
  .wrap { width: calc(100% - 40px); }
  body { padding-bottom: calc(90px + env(safe-area-inset-bottom)); }
  .header { min-height: 66px; }
  .brand { font-size: 23px; }
  .brand span { display: none; }
  .event-label { font-size: 10px; }
  .hero { grid-template-columns: 1fr; gap: 30px; padding-block: 32px 38px; }
  .eyebrow { margin-bottom: 14px; font-size: 10px; }
  h1 { font-size: clamp(25px, 6.8vw, 36px); margin-bottom: 16px; }
  .game-title { font-size: 25px; margin-bottom: 12px; }
  .game-title span { font-size: 13px; }
  .intro { margin-bottom: 20px; font-size: 13px; }
  .hero-copy .play-button { width: 100%; }
  .hero-art img { aspect-ratio: 16 / 10; }
  .story { grid-template-columns: 1fr; gap: 24px; padding-block: 36px 40px; }
  .story-text br { display: none; }
  .info-section { grid-template-columns: 1fr; gap: 24px; padding-block: 32px; }
  .info-heading h2 { font-size: 23px; }
  .info-list > div { grid-template-columns: 1fr; gap: 4px; }
  .screenshots-section { padding-block: 32px 40px; }
  .screenshot-grid { grid-template-columns: 1fr; gap: 24px; }
  .play-inner { padding-block: 38px; }
  .play-inner h2 { font-size: clamp(21px, 5.5vw, 28px); }
  .footer { flex-direction: column; gap: 12px; padding-block: 24px; }
  .mobile-play { display: block; position: fixed; bottom: 0; left: 0; right: 0; z-index: 5; padding: 10px 20px calc(10px + env(safe-area-inset-bottom)); background: #fff; border-top: 1px solid var(--line); }
  .mobile-play .play-button { width: 100%; max-width: 500px; margin-inline: auto; min-height: 54px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .play-button { transition: none; } }