:root {
    color-scheme: light;
    --paper: #f8f7f3;
    --ink: #0c2549;
    --muted: #667181;
    --red: #cf3e32;
    --line: #dfdfd8;
    --ease: cubic-bezier(.22, 1, .36, 1);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-synthesis: none;
    font-optical-sizing: auto;
}

* { box-sizing: border-box; }
html { background: var(--paper); }
body { min-height: 100svh; margin: 0; display: flex; flex-direction: column; color: var(--ink); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
img { display: block; max-width: 100%; height: auto; }
svg { display: block; }
h1, p { margin: 0; }
a:focus-visible { outline: 3px solid #d45a38; outline-offset: 6px; }
::selection { background: #f0c7b9; color: var(--ink); }
.container { width: min(1200px, calc(100% - 96px)); margin-inline: auto; }
.icon { width: 24px; height: 24px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.icon-definitions { position: absolute; width: 0; height: 0; overflow: hidden; }
.skip-link { position: fixed; top: 12px; left: 12px; padding: 12px 18px; background: var(--ink); color: white; z-index: 10; transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.site-header { display: flex; align-items: center; justify-content: space-between; min-height: 94px; gap: 24px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand img { width: 44px; height: 44px; border-radius: 12px; box-shadow: 0 2px 8px #0925470b; }
.brand > span { font-size: 18px; letter-spacing: -.04em; font-weight: 750; line-height: 1.4; }
.brand small { display: block; margin-top: 4px; font-size: 10px; font-weight: 400; letter-spacing: .06em; color: var(--muted); }

main { display: flex; flex: 1; }
.hero { display: grid; grid-template-columns: 1.02fr 1fr; align-items: center; gap: 30px; padding-block: 32px 40px; min-height: 662px; }
.hero-copy { position: relative; z-index: 2; }
.eyebrow { display: flex; align-items: center; gap: 10px; font-size: 12px; line-height: 1.6; font-weight: 650; letter-spacing: .12em; color: var(--red); }
.eyebrow > span { width: 6px; height: 6px; background: var(--red); border-radius: 50%; }
h1 { margin-top: 26px; font-size: clamp(50px, 5.55vw, 80px); font-weight: 800; letter-spacing: -.065em; line-height: 1.21; }
h1 > span { color: var(--red); }
.hero-description { margin-top: 24px; color: var(--muted); font-size: 16px; line-height: 1.9; letter-spacing: .015em; }
.hero-actions { margin-top: 34px; }
.button { min-height: 54px; display: inline-flex; justify-content: center; align-items: center; gap: 12px; padding: 14px 23px; border-radius: 8px; font-size: 14px; font-weight: 650; transition: background .2s, transform .2s var(--ease), box-shadow .2s; }
.button > .icon:last-child { width: 17px; height: 17px; margin-left: 6px; }
.button .apple-icon { width: 23px; height: 23px; }
.button-primary { background: var(--ink); color: white; box-shadow: 0 6px 16px #0c25490d; }
.button-primary:hover { background: #214265; transform: translateY(-2px); box-shadow: 0 10px 24px #0c25491a; }
.button:active { transform: scale(.97); transition-duration: .1s; }
.compatibility { font-size: 10px; color: #78818b; margin-top: 15px; line-height: 1.8; }
.release-info { display: flex; align-items: center; gap: 13px; margin-top: 25px; color: #7a838c; font-size: 10px; line-height: 1.8; font-variant-numeric: tabular-nums; }
.release-info > span + span { padding-left: 13px; border-left: 1px solid #d5d8d6; }

.hero-visual { min-width: 0; position: relative; height: 590px; isolation: isolate; }
.hero-disc { position: absolute; width: 480px; aspect-ratio: 1; border-radius: 50%; background: #eee3d9; left: 36px; top: 60px; z-index: -2; }
.hero-route { position: absolute; inset: 0 auto auto -8px; width: 100%; height: 590px; color: #b4b5aa; z-index: -1; }
.phone { border: 2px solid #555a5b; padding: 6px; border-radius: 39px; background: #1b1c20; box-shadow: inset 0 0 0 2px #15171a, 0 24px 48px -18px #1728424f, 0 3px 4px #071a2826; overflow: hidden; }
.phone img { width: 100%; border-radius: 31px; background: #f0f0f5; }
.hero-phone-front { position: absolute; width: 238px; left: 238px; top: 26px; transform: rotate(8deg); z-index: 2; }
.hero-phone-back { position: absolute; width: 208px; left: 46px; top: 118px; transform: rotate(-10deg); }
.route-label { position: absolute; top: 41px; left: 18px; display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--paper); box-shadow: 0 5px 24px #0c254910; border: 1px solid #e7e4dc; border-radius: 7px; font-size: 12px; z-index: 3; }
.route-label-dot { width: 7px; height: 7px; border: 2px solid var(--red); border-radius: 50%; }
.route-label-line { width: 28px; height: 1px; border-top: 1px dashed #b0b5b9; }
.route-label .icon { width: 15px; height: 15px; color: var(--red); margin-right: -7px; }
.hero-stamp { position: absolute; right: -4px; bottom: 24px; width: 132px; padding: 14px; border: 1px solid #c66b5f; color: #ba584d; transform: rotate(-10deg); border-radius: 50%; aspect-ratio: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; font-size: 12px; letter-spacing: .12em; }
.hero-stamp strong { font-family: Georgia, serif; font-size: 13px; letter-spacing: -.04em; margin-top: 5px; }
.hero-stamp span { font-size: 9px; padding-top: 9px; }
.visual-caption { position: absolute; bottom: 0; left: 105px; color: #8b8e8c; font-size: 9px; letter-spacing: .14em; }

.site-footer { border-top: 1px solid var(--line); padding-block: 22px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.site-notice { color: #828990; font-size: 9px; line-height: 1.9; }
.copyright { text-align: right; color: #7b838b; font-size: 10px; line-height: 1.9; }

@media (min-width: 1450px) {
    .hero { padding-block: 55px; }
}
@media (max-width: 1150px) {
    .container { width: calc(100% - 64px); }
    .hero { gap: 12px; }
    h1 { font-size: 62px; }
    .hero-visual { height: 550px; transform: scale(.91); transform-origin: center right; }
    .hero-disc { left: -18px; }
    .hero-phone-front { left: 180px; }
    .hero-phone-back { left: 0; }
    .route-label { left: -15px; }
    .hero-stamp { right: -14px; bottom: 0; }
}
@media (max-width: 900px) {
    .hero { min-height: 600px; }
    h1 { font-size: 54px; }
    .hero-description { font-size: 14px; }
    .hero-visual { height: 510px; transform: none; }
    .hero-disc { width: 340px; height: 340px; top: 92px; left: 3px; }
    .hero-phone-front { width: 199px; left: 137px; top: 29px; }
    .hero-phone-back { width: 165px; left: 5px; top: 121px; }
    .hero-route { height: 510px; }
    .hero-stamp { width: 106px; right: -10px; bottom: 5px; }
    .hero-stamp strong { font-size: 10px; }
    .route-label { top: 34px; left: -8px; padding: 10px; gap: 8px; font-size: 10px; }
    .visual-caption { left: 50px; bottom: 8px; }
}
@media (max-width: 760px) {
    .container { width: calc(100% - 40px); }
    .site-header { min-height: 78px; gap: 15px; }
    .brand { gap: 9px; }
    .brand img { width: 38px; height: 38px; border-radius: 10px; }
    .brand > span { font-size: 15px; }
    .brand small { font-size: 9px; }
    .hero { grid-template-columns: 1fr; gap: 24px; padding-block: 45px 27px; }
    .hero-copy { text-align: center; }
    .eyebrow { justify-content: center; font-size: 10px; }
    h1 { margin-top: 19px; font-size: clamp(48px,9.6vw,68px); line-height: 1.22; }
    .hero-description { font-size: 13px; margin-top: 18px; }
    .hero-actions { margin-top: 25px; }
    .button { padding-inline: 22px; font-size: 13px; min-height: 52px; gap: 10px; }
    .compatibility { font-size: 9px; margin-top: 12px; }
    .release-info { justify-content: center; margin-top: 15px; font-size: 9px; }
    .hero-visual { width: 425px; height: 510px; margin-inline: auto; }
    .hero-disc { width: 370px; height: 370px; top: 58px; left: 27px; }
    .hero-phone-front { width: 211px; top: 19px; left: 181px; transform: rotate(7deg); }
    .hero-phone-back { width: 177px; top: 87px; left: 30px; }
    .hero-route { height: 500px; }
    .hero-stamp { bottom: 2px; right: 1px; width: 106px; }
    .route-label { left: 7px; top: 22px; }
    .visual-caption { bottom: 4px; left: 85px; }
    .site-footer { padding-block: 21px; }
    .site-notice { font-size: 8px; max-width: 180px; }
    .copyright { font-size: 9px; }
}
@media (max-width: 480px) {
    .hero { padding-top: 36px; gap: 27px; }
    .hero-visual { width: 350px; height: 448px; }
    .hero-disc { width: 306px; height: 306px; left: 22px; top: 60px; }
    .hero-phone-front { width: 184px; left: 148px; top: 18px; }
    .hero-phone-back { width: 155px; left: 13px; top: 81px; }
    .phone { padding: 5px; border-radius: 30px; }
    .phone img { border-radius: 23px; }
    .hero-route { height: 435px; }
    .hero-stamp { width: 88px; bottom: 2px; right: 2px; font-size: 9px; }
    .hero-stamp strong { font-size: 8px; }
    .hero-stamp span { font-size: 7px; padding-top: 5px; }
    .route-label { top: 12px; left: 0; font-size: 9px; padding: 8px; }
    .route-label-line { width: 18px; }
    .visual-caption { font-size: 7px; bottom: 2px; left: 61px; }
    .site-footer { flex-direction: column; gap: 12px; text-align: center; }
    .site-notice { max-width: none; }
    .copyright { text-align: center; }
}
@media (max-width: 370px) {
    .container { width: calc(100% - 32px); }
    h1 { font-size: 48px; }
    .hero-visual { width: 288px; height: 395px; }
    .hero-disc { width: 270px; height: 270px; left: 15px; top: 58px; }
    .hero-phone-front { width: 157px; left: 121px; }
    .hero-phone-back { width: 135px; left: 8px; top: 81px; }
    .hero-route { height: 380px; }
    .hero-stamp { width: 75px; right: 0; }
    .hero-stamp strong { font-size: 7px; }
    .route-label { padding: 7px; gap: 6px; font-size: 8px; }
    .compatibility { font-size: 8px; }
    .release-info { font-size: 8px; }
}
@media (prefers-reduced-motion: reduce) {
    .button { transition: none; }
    .button:hover, .button:active { transform: none; }
}
@media (prefers-contrast: more) {
    :root { --muted: #3e4f61; --line: #969a9d; }
    .compatibility, .release-info, .site-notice, .copyright, .visual-caption { color: #445367; }
}