* { box-sizing:border-box; }
html { scroll-behavior:smooth; scroll-padding-top:30px; }
body { margin:0; background:var(--background); color:var(--foreground); font-family:"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif; -webkit-font-smoothing:antialiased; }
img { display:block; max-width:100%; height:auto; }
.wrap { width:min(1120px,calc(100% - 80px)); margin-inline:auto; }
.skip-link { position:absolute; top:-100px; padding:12px; background:var(--card); z-index:10; }
.skip-link:focus { top:8px; }
.site-header { display:flex; justify-content:space-between; align-items:center; padding-block:27px; border-bottom:1px solid var(--border); gap:20px; }
.brand { display:flex; align-items:center; gap:12px; font-weight:750; text-decoration:none; font-size:17px; white-space:nowrap; }
.brand img { border-radius:9px; }
nav { display:flex; gap:27px; font-size:13px; }
nav a { text-decoration:none; }
.hero { display:grid; grid-template-columns:1.1fr 1fr; gap:64px; align-items:center; padding-block:94px 102px; }
.eyebrow { font-family:ui-monospace,monospace; letter-spacing:.16em; font-size:11px; font-weight:600; color:var(--accent); margin:0 0 24px; }
h1 { font-size:clamp(34px,4.05vw,54px); line-height:1.55; letter-spacing:-.045em; font-weight:750; margin:0 0 24px; }
h1 span { color:var(--accent); }
.intro { font-size:16px; line-height:2.05; color:var(--muted); margin-bottom:30px; }
.button { display:inline-flex; justify-content:center; align-items:center; gap:30px; text-decoration:none; padding:17px 25px; border-radius:7px; font-size:14px; font-weight:650; border:1px solid var(--accent); transition:background .15s, color .15s; text-align:center; }
.primary, .primary:visited { background:var(--accent); color:var(--on-accent); }
.primary:hover { background:var(--accent-hover); color:var(--on-accent); }
.secondary, .secondary:visited { background:transparent; color:var(--link); border-color:var(--link); }
.secondary:hover { background:var(--card); color:var(--link-hover); }
.download-meta { font-size:11px; color:var(--muted); margin:15px 0 9px; }
.signing-note { font-size:11px; color:var(--muted); line-height:1.8; }
.signing-note a { margin-left:8px; }
.time-example { border:1px solid var(--border); background:var(--card); color:var(--foreground); border-radius:25px; padding:37px 35px 29px; box-shadow:0 24px 55px var(--shadow); transform:rotate(-2deg); }
.example-label { border-bottom:1px solid var(--border); padding-bottom:25px; margin:0; font-size:13px; }
.logical-date { color:var(--muted); font-size:14px; margin:38px 0 10px; }
.large-time { margin:0 0 34px; color:var(--accent); font-family:ui-monospace,"SFMono-Regular",Menlo,monospace; font-size:clamp(54px,7.2vw,93px); font-weight:400; letter-spacing:-.07em; line-height:1.25; white-space:nowrap; }
.large-time span { color:var(--muted); }
.time-caption { display:flex; justify-content:space-between; gap:10px; border-top:1px solid var(--border); padding-top:21px; font-size:12px; }
.boundary-caption { color:var(--muted); font-size:10px; line-height:1.8; margin-top:17px; }
.story { padding-block:72px 94px; border-top:1px solid var(--border); }
h2 { font-size:clamp(26px,3vw,36px); line-height:1.65; letter-spacing:-.025em; font-weight:700; margin:0 0 30px; }
.features { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:50px; }
.features article { background:var(--card); border:1px solid var(--border); border-radius:14px; padding:24px; min-width:0; }
.feature-number { color:var(--accent); font-family:ui-monospace,monospace; font-size:12px; }
h3 { font-size:17px; font-weight:700; margin:18px 0 13px; }
.features p,.section-copy { font-size:14px; line-height:2.1; color:var(--muted); }
.settings-section { background:var(--surface); }
.settings-grid { display:grid; grid-template-columns:1fr 1fr; gap:100px; padding-block:70px; align-items:center; }
.settings-image img { width:385px; margin:auto; border-radius:18px; }
.setting-list { list-style:none; padding:0; margin-top:25px; font-size:13px; color:var(--accent); }
.setting-list li { padding:12px 0; border-bottom:1px solid var(--border); }
.setting-list li::before { content:"✓"; margin-right:12px; }
.download-section { padding-block:95px 80px; text-align:center; }
.download-section > p:not(.eyebrow) { color:var(--muted); font-size:13px; }
.download-actions { display:flex; justify-content:center; gap:15px; flex-wrap:wrap; margin:30px 0; }
.release-notice { background:var(--surface); max-width:780px; margin:40px auto 0; padding:22px 28px; text-align:left; border:1px solid var(--border); border-radius:10px; }
.release-notice h3 { margin-top:0; font-size:14px; }
.release-notice p { font-size:12px; line-height:1.95; color:var(--muted); }
.release-notice a { display:inline-block; font-size:12px; margin:10px 20px 0 0; }
footer { display:flex; justify-content:space-between; gap:25px; border-top:1px solid var(--border); padding-block:32px 45px; font-size:12px; }
.footer-brand { font-size:14px; font-weight:650; }
.footer-brand span { display:block; font-size:11px; font-weight:400; color:var(--muted); margin-top:13px; }
footer a { margin-right:20px; }
footer p { font-size:10px; color:var(--muted); margin-top:15px; }
.mobile-break { display:none; }
@media (max-width:800px) { .wrap { width:calc(100% - 40px); } nav { gap:16px; } nav a:first-child { display:none; } .hero { gap:30px; padding-block:60px; } .time-example { padding:25px; } .features { gap:24px; } .settings-grid { gap:35px; } }
@media (max-width:600px) { .site-header { padding-block:20px; } .brand { font-size:14px; gap:8px; } .brand img { width:32px; } nav { font-size:11px; } nav a:nth-child(2) { display:none; } .hero { grid-template-columns:1fr; gap:42px; padding-block:48px 65px; } h1 { font-size:36px; } .hero-copy { text-align:center; } .eyebrow { font-size:10px; } .intro { font-size:14px; } .time-example { max-width:390px; width:100%; margin:auto; transform:rotate(-1deg); padding:30px; } .large-time { font-size:78px; } .story { padding-block:55px; } .features { grid-template-columns:1fr; gap:22px; margin-top:35px; } .features article { border-top:1px solid var(--border); padding-top:20px; } .features p { margin-bottom:0; } .settings-grid { grid-template-columns:1fr; padding-block:45px; gap:35px; } .settings-image { order:2; } .settings-image img { max-width:330px; width:100%; } .download-section { padding-block:60px; } .download-actions { flex-direction:column; align-items:stretch; } .release-notice { padding:20px; } footer { flex-direction:column; } .mobile-break { display:inline; } }
@media (prefers-reduced-motion:reduce) { html { scroll-behavior:auto; } .button { transition:none; } }

.ios-recruit { margin-top:32px; padding:30px 36px; background:var(--surface); border:1px solid var(--border); border-top:2px solid var(--link); border-radius:16px; box-shadow:0 8px 24px var(--shadow); }
.ios-recruit .eyebrow { margin-bottom:10px; }
.ios-recruit h2 { font-size:clamp(22px,2.6vw,30px); margin-bottom:14px; line-height:1.6; }
.ios-recruit p:not(.eyebrow) { font-size:14px; line-height:1.9; margin:10px 0; }
.ios-actions { display:flex; flex-wrap:wrap; gap:12px; margin-top:22px; }
@media(max-width:600px) { .ios-recruit { padding:24px 20px; margin-top:22px; } .ios-actions { flex-direction:column; } }

/* Frame original screenshots without changing their pixels or colors. */
#main-screen img, .settings-image img { border:1px solid var(--border); box-shadow:0 16px 40px var(--shadow); border-radius:18px; }
.brand, .brand:visited { color:var(--foreground); }
.brand:hover { color:var(--accent); }
.ios-recruit .eyebrow { color:var(--link); }
.ios-recruit p:not(.eyebrow) { color:var(--muted); }
.ios-recruit strong { color:var(--foreground); }
.ios-recruit .primary, .ios-recruit .primary:visited { background:var(--card); color:var(--link); border-color:var(--link); }
.ios-recruit .primary:hover { color:var(--link-hover); background:var(--background); }
.hero > *, .settings-grid > * { min-width:0; }
@media (max-width:360px) { h1 { font-size:32px; } .site-header { gap:10px; } .button { padding-inline:16px; gap:14px; } }

/* Shared OS navigation; current OS is explicit even without color. */
.os-switch { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:12px 24px; padding-block:20px; font-size:13px; }
.os-switch p { margin:0; color:var(--muted); }
.os-tabs { display:flex; flex-wrap:wrap; gap:8px; }
.os-tabs a, .os-tabs span { display:inline-flex; align-items:center; justify-content:center; min-height:44px; padding:10px 18px; border:1px solid var(--border); border-radius:7px; text-decoration:none; }
.os-tabs [aria-current="page"] { color:var(--foreground); background:var(--card); border-color:var(--accent); font-weight:700; }
.os-tabs a:hover { background:var(--surface); }
.os-switch a:focus-visible { outline:3px solid var(--focus); outline-offset:3px; }