:root { font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; color: #102033; background: #f4f8fc; }
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
[hidden] { display: none !important; }
.site-header { display: flex; align-items: center; justify-content: space-between; max-width: 1120px; margin: auto; padding: 24px 32px; }
.brand { display: flex; gap: 12px; align-items: center; font-size: 20px; font-weight: 700; }
.brand img { width: 100px; height: 42px; padding: 6px; flex-shrink: 0; object-fit: contain; background: #0a3d96; border-radius: 6px; }
.brand small { display: block; color: #5e6f85; font-size: 11px; font-weight: 400; }
.home-link { color: #5e6f85; font-size: 14px; }
main { max-width: 1120px; margin: 32px auto 0; padding: 0 32px; }
.download-card { display: grid; grid-template-columns: 1fr 1.1fr; overflow: hidden; border: 1px solid #dfe7f0; border-radius: 20px; background: #fff; box-shadow: 0 20px 60px #1020330c; }
.intro { padding: 48px; background: #edf4ff; }
.eyebrow, .panel-kicker { display: block; color: #1769ff; font-size: 13px; font-weight: 700; letter-spacing: 2px; }
.app-logo { display: block; width: 184px; height: 76px; padding: 12px; object-fit: contain; margin: 34px 0 24px; background: #0a3d96; border-radius: 10px; }
h1 { margin: 0; font-size: 40px; line-height: 1.35; letter-spacing: -1px; }
.intro-copy { margin: 20px 0 32px; color: #5e6f85; font-size: 15px; line-height: 1.9; }
.features { display: flex; gap: 10px; flex-wrap: wrap; }
.features span { padding: 6px 12px; border: 1px solid #cbdcf5; border-radius: 6px; color: #0a3d96; font-size: 12px; }
.download-panel { padding: 48px; }
h2 { margin: 12px 0 20px; font-size: 25px; line-height: 1.4; }
.status { min-height: 48px; margin: 0 0 20px; color: #5e6f85; font-size: 14px; overflow-wrap: anywhere; }
.primary-button { display: block; padding: 14px 20px; color: #fff; background: #1769ff; text-align: center; border-radius: 8px; font-size: 16px; font-weight: 700; }
.primary-button:hover { background: #0a3d96; }
.download-help, .unavailable-note { color: #7a899b; font-size: 12px; line-height: 1.8; }
.other-heading { display: flex; align-items: center; gap: 14px; margin: 30px 0 16px; color: #5e6f85; font-size: 12px; }
.heading-line { flex: 1; height: 1px; background: #dfe7f0; }
.store-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.store-link { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; min-height: 48px; padding: 11px 12px; border: 1px solid #dfe7f0; border-radius: 8px; font-size: 13px; }
.store-link small { font-size: 11px; white-space: nowrap; }
a.store-link:hover { border-color: #1769ff; color: #1769ff; }
.store-link--disabled { color: #8c99aa; background: #f8fafc; }
.browser-tip { margin: 0 0 16px; padding: 12px 14px; color: #8b5b15; background: #fff7e8; border-radius: 8px; font-size: 13px; }
.retry-button { padding: 10px 16px; color: #1769ff; border: 1px solid #1769ff; background: #fff; border-radius: 8px; }
.privacy-note { text-align: center; color: #7a899b; font-size: 12px; margin: 24px 0; }
footer { padding: 28px 20px; text-align: center; color: #7a899b; font-size: 12px; }
footer span { padding: 0 8px; }
a:focus-visible, button:focus-visible { outline: 3px solid #1cc7b8; outline-offset: 4px; }
@media (max-width: 760px) {
  .site-header { padding: 18px 20px; }
  main { margin-top: 12px; padding: 0 16px; }
  .download-card { grid-template-columns: 1fr; border-radius: 14px; }
  .intro { padding: 28px; }
  .brand { font-size: 18px; }
  .app-logo { width: 164px; height: 68px; margin: 22px 0 16px; }
  h1 { font-size: 32px; }
  .intro-copy { margin: 14px 0 20px; }
  .download-panel { padding: 28px; }
  h2 { font-size: 22px; }
}
@media (max-width: 380px) { .brand { gap: 8px; font-size: 16px; } .brand img { width: 80px; height: 36px; } .brand small { font-size: 10px; } .home-link { font-size: 12px; } .download-panel, .intro { padding: 22px; } .store-grid { gap: 8px; } .store-link { padding: 10px 8px; font-size: 12px; } }