:root {
  --sky: #126eaf;
  --sea: #0b5f9c;
  --navy: #123c61;
  --ink: #17384f;
  --mist: #eef7fc;
  --line: #b9d3e4;
  --white: #ffffff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Noto Sans JP', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button { font: inherit; }
:focus-visible { outline: 3px solid #ffdc7a; outline-offset: 4px; }
.skip { position: absolute; top: -80px; left: 16px; z-index: 20; padding: 12px 16px; background: var(--white); }
.skip:focus { top: 12px; }
.container, .header-inner, .hero-inner { width: min(100% - 48px, 1160px); margin-inline: auto; }
.site-header { background: var(--sky); color: var(--white); }
.header-inner { min-height: 76px; display: flex; align-items: center; gap: 24px; }
.brand { width: 140px; flex: none; display: block; }
.brand img { display: block; width: 100%; height: auto; }
.site-header nav { margin-left: auto; }
.site-header nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-decoration: none; }
.site-header nav a:hover { text-decoration: underline; text-underline-offset: 5px; }
.language { display: flex; align-items: center; gap: 4px; margin-left: 12px; }
.language button { min-width: 44px; min-height: 44px; border: 0; border-bottom: 2px solid transparent; background: none; color: #d9edf9; font-size: 12px; font-weight: 700; cursor: pointer; }
.language button[aria-pressed=true] { color: var(--white); border-bottom-color: var(--white); }
.hero { background: var(--mist); }
.hero-image { aspect-ratio: 1536 / 456; background: url('aozora-splash.webp') center / cover no-repeat; }
.hero-inner { min-height: 170px; display: grid; grid-template-columns: 1fr 275px; grid-template-rows: auto auto; align-content: center; align-items: center; column-gap: 40px; padding-block: 30px; }
.hero h1 { grid-column: 1; grid-row: 1 / 3; margin: 0; color: var(--navy); font-size: clamp(30px, 3.3vw, 48px); font-weight: 700; letter-spacing: -.035em; line-height: 1.45; }
.hero h1 em { font-style: normal; }
.hero-lead { grid-column: 2; grid-row: 1; margin: 0 0 12px; font-size: 14px; line-height: 1.7; }
.hero-cta { grid-column: 2; grid-row: 2; width: 210px; min-height: 48px; display: inline-flex; align-items: center; justify-content: space-between; gap: 20px; padding: 12px 17px; background: var(--sea); color: var(--white); font-size: 13px; font-weight: 700; text-decoration: none; transition: background .2s; }
.hero-cta:hover { background: var(--navy); }
.intro { padding: 78px 0 96px; }
.section-head { border-top: 1px solid var(--line); padding-top: 18px; margin-bottom: 46px; }
.section-kicker, .overline, .art-caption { margin: 0; font-size: 11px; font-weight: 700; letter-spacing: .16em; }
.section-kicker { color: var(--sea); }
.game-grid { display: grid; grid-template-columns: 1fr 1.03fr; gap: 7%; align-items: center; }
.overline { margin-bottom: 23px; color: var(--sea); }
.game-copy h2 { margin: 0 0 26px; color: var(--navy); font-size: clamp(38px, 4vw, 58px); font-weight: 700; letter-spacing: -.035em; line-height: 1.4; }
.game-copy h2 em { color: var(--sky); font-style: normal; }
.game-description { max-width: 490px; margin: 0 0 26px; font-size: 15px; line-height: 2; }
.game-facts { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 36px; }
.game-facts span { border: 1px solid var(--line); padding: 9px 12px; color: var(--navy); font-size: 12px; font-weight: 700; }
.text-link { display: inline-flex; align-items: center; justify-content: space-between; gap: 46px; min-width: 206px; border-bottom: 2px solid var(--sea); padding-bottom: 10px; color: var(--sea); font-size: 14px; font-weight: 700; text-decoration: none; }
.text-link:hover { color: var(--navy); border-color: var(--navy); }
.game-art { position: relative; display: block; aspect-ratio: 4 / 4.1; overflow: hidden; background: #c5b080; }
.game-art img { width: 100%; height: 100%; display: block; object-fit: cover; }
.art-caption { position: absolute; inset: auto 0 0; padding: 18px 20px; background: #123c61d9; color: var(--white); }
footer { background: var(--navy); color: var(--white); }
.footer-inner { min-height: 88px; display: flex; align-items: center; gap: 20px; }
footer span, footer a { font-size: 12px; letter-spacing: .04em; }
footer a { margin-left: auto; text-decoration: none; }
footer a:hover { text-decoration: underline; }
.asset-note { margin-top: 0; padding-bottom: 24px; color: #d7e9f4; font-size: 12px; line-height: 1.8; }
@media (max-width: 760px) {
  .container, .header-inner, .hero-inner { width: min(100% - 36px, 1160px); }
  .header-inner { min-height: 64px; gap: 12px; }
  .brand { width: 108px; }
  .language { margin-left: 0; }
  .hero-inner { display: block; min-height: 0; padding-block: 32px 38px; }
  .hero h1 { font-size: clamp(28px, 7vw, 40px); }
  .hero-lead { margin: 13px 0 20px; }
  .intro { padding: 60px 0 76px; }
  .section-head { margin-bottom: 34px; }
  .game-grid { grid-template-columns: 1fr; gap: 38px; }
  .game-copy h2 { font-size: clamp(36px, 9vw, 52px); }
  .game-art { aspect-ratio: 4 / 3.2; }
}
@media (max-width: 420px) {
  .hero h1 { font-size: 29px; }
  .site-header nav a { font-size: 11px; }
  .game-copy h2 { font-size: 36px; }
  .game-description { font-size: 14px; }
  .art-caption { font-size: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}