:root {
    color-scheme: light;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: #17233a;
    background: #eef4ff;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; min-height: 100vh; background: linear-gradient(135deg, #e2edff 0%, #f7f9fd 48%, #edfafa 100%); }
.page-shell { width: 100%; min-height: 100vh; padding: 40px 18px; }
.download-panel { width: min(100%, 520px); margin: 0 auto; padding: 38px 34px 28px; background: rgba(255,255,255,.96); border: 1px solid rgba(255,255,255,.9); border-radius: 28px; box-shadow: 0 24px 70px rgba(53,84,132,.16); }
.hero { text-align: center; }
.brand-icon-wrap { width: 82px; height: 82px; margin: 0 auto 22px; padding: 7px; border-radius: 22px; background: #fff; box-shadow: 0 10px 26px rgba(39,91,190,.2); }
.brand-icon { width: 100%; height: 100%; border-radius: 16px; object-fit: cover; }
.eyebrow { margin: 0 0 10px; color: #2462d2; font-size: 12px; font-weight: 800; letter-spacing: 3px; }
h1 { margin: 0; font-size: 34px; line-height: 1.22; letter-spacing: 0; }
.subtitle { margin: 10px 0 18px; color: #748097; font-size: 15px; }
.meta-row { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; }
.platform-pill,.update-pill { padding: 7px 12px; border-radius: 999px; background: #f2f6ff; color: #315eae; font-size: 12px; }
.download-section { margin-top: 34px; }
.ios-card { display: grid; grid-template-columns: 54px minmax(0,1fr) 26px; align-items: center; gap: 14px; min-height: 92px; padding: 17px; color: #fff; text-decoration: none; background: #1769e0; border: 1px solid #1769e0; border-radius: 8px; box-shadow: 0 12px 26px rgba(23,105,224,.24); transition: transform .18s ease, box-shadow .18s ease; }
.ios-card:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(23,105,224,.3); }
.ios-card.is-loading { opacity: .72; pointer-events: none; }
.ios-mark { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 8px; background: #fff; color: #1769e0; font-weight: 800; }
.ios-copy { min-width: 0; display: flex; flex-direction: column; gap: 5px; }
.ios-copy strong { font-size: 17px; overflow-wrap: anywhere; }
.ios-copy span { color: #dfeaff; font-size: 13px; line-height: 1.45; }
.download-arrow { font-size: 28px; text-align: center; }
.status { min-height: 20px; margin: 13px 0 0; text-align: center; color: #728096; font-size: 13px; }
.status.error { color: #b42318; }
.notice { margin-top: 30px; padding: 18px; border: 1px solid #e2e7ef; border-radius: 8px; background: #f8f9fb; }
.notice strong { font-size: 14px; }
.notice p { margin: 8px 0 0; color: #6c778b; font-size: 13px; line-height: 1.75; }
footer { margin-top: 24px; color: #9aa4b5; text-align: center; font-size: 12px; }
@media (max-width: 560px) {
    .page-shell { padding: 0; }
    .download-panel { min-height: 100vh; padding: 34px 20px 24px; border: 0; border-radius: 0; }
    h1 { font-size: 28px; }
    .ios-card { grid-template-columns: 48px minmax(0,1fr) 22px; padding: 14px; }
    .ios-mark { width: 48px; height: 48px; }
}