:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Segoe UI", sans-serif; color: #181c25; background: #fff; font-synthesis: none; }
* { box-sizing: border-box; }
body { margin: 0; }
img { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
[hidden] { display: none !important; }
.page-shell { min-height: calc(100vh - 48px); }
.site-header { display: flex; align-items: center; justify-content: space-between; max-width: 1440px; height: 78px; margin: 0 auto; padding: 0 30px; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: inherit; font-size: 15px; font-weight: 700; text-decoration: none; }
.brand img { width: 30px; height: 30px; border: 1px solid #e5e5e5; border-radius: 9px; }
.language-switch { display: inline-flex; gap: 3px; padding: 3px; border: 1px solid #e5e7eb; border-radius: 999px; background: #f8f9fa; }
.language-switch a { min-width: 70px; padding: 7px 11px; border: 0; border-radius: 999px; background: transparent; color: #626774; font-size: 12px; font-weight: 600; text-align: center; text-decoration: none; cursor: pointer; }
.language-switch a[aria-current="page"] { background: #fff; color: #151923; box-shadow: 0 1px 5px rgba(15, 23, 42, .12); }
.language-switch a:hover { color: #111827; }
.hero { display: grid; grid-template-columns: minmax(320px, 450px) minmax(500px, 590px); align-items: center; justify-content: space-between; gap: 58px; width: min(1080px, calc(100% - 100px)); min-height: 620px; margin: 0 auto; padding: 24px 0 50px; }
.hero-copy { padding-bottom: 2px; }
.mobile-icon { display: none; }
.hero h1 { margin: 0 0 14px; font-size: clamp(31px, 3vw, 39px); font-weight: 750; letter-spacing: -.055em; line-height: 1.45; white-space: nowrap; }
.lead { max-width: 445px; margin: 0 0 23px; color: #626774; font-size: 14px; line-height: 1.9; }
.store-badges { display: flex; align-items: center; gap: 12px; }
.store-badges a { display: inline-block; width: 128px; height: 38px; border-radius: 6px; transition: transform .18s ease, box-shadow .18s ease; }
.store-badges a:hover, .store-badges a:focus-visible { transform: translateY(-2px); box-shadow: 0 4px 14px rgba(0, 0, 0, .17); }
.store-badges img { width: 128px; height: 38px; }
.subnote { margin: 16px 0 0; color: #8b909a; font-size: 12px; }
.phone-stage { position: relative; width: 590px; height: 520px; }
.phone { position: absolute; width: 238px; height: 487px; overflow: hidden; border: 7px solid #12151b; border-radius: 39px; background: #0d0e12; box-shadow: 0 5px 8px rgba(0, 0, 0, .12), 0 0 0 2px #a9aeb7; }
.phone::after { position: absolute; inset: 0; border: 1px solid rgba(255,255,255,.25); border-radius: 31px; content: ""; pointer-events: none; }
.phone img { width: 100%; height: 100%; object-fit: cover; }
.phone-front { top: 4px; left: 30px; z-index: 3; }
.phone-middle { top: 38px; left: 186px; z-index: 2; box-shadow: 0 5px 8px rgba(0, 0, 0, .09), 0 0 0 2px #bbc0c6; }
.phone-back { top: 68px; left: 340px; z-index: 1; opacity: .38; box-shadow: 0 0 0 2px #d6d9de; }
.site-footer { display: flex; align-items: center; justify-content: center; gap: 22px; min-height: 48px; padding: 13px 24px; background: #e9eaed; color: #868a92; font-size: 11px; text-align: center; }
.credits { position: relative; }
.credits summary { cursor: pointer; }
.credits[open] { flex-basis: 100%; }
.credits p { margin: 6px auto 0; max-width: 800px; line-height: 1.7; }
.credits a { color: inherit; }
:focus-visible { outline: 3px solid #74a9ff; outline-offset: 3px; }
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; justify-items: center; gap: 24px; width: min(100% - 36px, 650px); min-height: 0; padding: 25px 0 48px; text-align: center; }
  .hero-copy { position: relative; z-index: 4; }
  .hero h1 { white-space: normal; }
  .lead { margin-left: auto; margin-right: auto; }
  .store-badges { justify-content: center; }
  .phone-stage { margin: 12px auto 0; }
}
@media (max-width: 620px) {
  .page-shell { min-height: 0; }
  .site-header { height: 55px; padding: 0 18px; }
  .brand span { display: none; }
  .brand img { width: 27px; height: 27px; }
  .language-switch a { min-width: 65px; padding: 6px 9px; font-size: 11px; }
  .hero { gap: 15px; width: 100%; padding: 25px 18px 0; }
  .mobile-icon { display: inline-flex; width: 102px; height: 102px; align-items: center; justify-content: center; margin-bottom: 20px; border: 1px solid #e7e7e7; border-radius: 23px; background: #fff; }
  .mobile-icon img { width: 90px; height: 90px; border-radius: 17px; }
  .hero h1 { margin-bottom: 10px; font-size: clamp(24px, 6vw, 33px); letter-spacing: -.055em; }
  .lead { max-width: 360px; margin-bottom: 21px; font-size: 12px; line-height: 1.8; }
  .store-badges { gap: 9px; }
  .store-badges a, .store-badges img { width: 118px; height: 35px; }
  .subnote { margin-top: 15px; font-size: 11px; }
  .phone-stage { width: 360px; height: 390px; max-width: 100%; margin-top: 26px; overflow: hidden; }
  .phone { width: 168px; height: 345px; border-width: 5px; border-radius: 29px; }
  .phone::after { border-radius: 23px; }
  .phone-front { top: 0; left: calc(50% - 84px); }
  .phone-middle { top: 32px; left: calc(50% + 25px); }
  .phone-back { top: 47px; left: calc(50% - 132px); }
  .site-footer { flex-direction: column; gap: 4px; font-size: 10px; }
}
@media (prefers-reduced-motion: reduce) { .store-badges a { transition: none; } }