:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #192b2b;
  background: #fff;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  letter-spacing: 0;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; }
button, input { font: inherit; letter-spacing: 0; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid #35b3a4; outline-offset: 4px; }
.site-header { border-bottom: 1px solid #edf1f2; }
.header-inner { max-width: 1120px; min-height: 80px; margin: 0 auto; padding: 12px 32px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 650; }
.brand-icon { width: 40px; height: 40px; object-fit: contain; flex: 0 0 40px; }
.header-label { font-size: 13px; color: #6b7d7c; white-space: nowrap; }
.download-view { width: 100%; max-width: 600px; margin: auto; padding: 22px 32px 48px; text-align: center; }
.app-icon { display: block; width: 200px; height: 200px; margin: 0 auto 5px; object-fit: contain; }
.section-label { display: flex; justify-content: center; align-items: center; gap: 12px; margin: 0 0 14px; color: #168476; font-size: 12px; font-weight: 650; line-height: 1.5; }
.label-line { display: block; width: 22px; height: 1px; background: #bbdad4; }
h1 { margin: 0; font-size: 44px; line-height: 1.35; font-weight: 700; overflow-wrap: anywhere; }
.platform-caption { margin: 14px 0 36px; color: #768282; font-size: 15px; }
.platform-caption span { margin: 0 12px; color: #c1cbca; }
.download-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.download-link { min-width: 0; min-height: 60px; padding: 16px 12px; display: flex; justify-content: center; align-items: center; gap: 9px; border-radius: 8px; border: 1px solid transparent; text-decoration: none; font-size: 15px; line-height: 1.5; font-weight: 600; transition: background-color 160ms, box-shadow 160ms; }
.download-link img { width: 22px; height: 22px; flex: 0 0 22px; }
.download-android { color: #fff; background: #0867ed; }
.download-android img { filter: brightness(0) invert(1); }
.download-android:hover { background: #0057d1; box-shadow: 0 4px 14px #0867ed1a; }
.download-ios { color: #126a5b; border-color: #c8e8e1; background: #eff9f5; }
.download-ios:hover { background: #e1f4eb; }
.browser-note { margin: 18px 0 0; color: #7c8988; font-size: 12px; line-height: 1.8; }
.download-divider { height: 1px; background: #edf1f2; margin: 38px 0 20px; }
.download-detail { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: #8b9695; font-size: 11px; line-height: 1.5; }
.site-footer { display: flex; align-items: center; justify-content: center; gap: 10px; padding: 20px 24px calc(20px + env(safe-area-inset-bottom)); color: #98a3a2; font-size: 11px; line-height: 1.6; }
.footer-separator { width: 1px; height: 10px; background: #d6dfdd; }
.wechat-view { position: relative; width: 100%; max-width: 680px; margin: auto; padding: 80px 32px 24px; }
.menu-pointer { display: flex; align-items: center; gap: 5px; position: absolute; right: 20px; top: 16px; color: #168476; font-size: 12px; }
.wechat-content { max-width: 400px; margin: 0 auto; text-align: center; }
.wechat-icon { display: block; width: 112px; height: 112px; margin: 0 auto 10px; object-fit: contain; }
.wechat-content h1 { font-size: 30px; }
.wechat-description { color: #7b8987; font-size: 14px; margin: 14px 0 30px; line-height: 1.7; }
.open-steps { padding: 0; margin: 0 auto 34px; list-style: none; max-width: 300px; text-align: left; }
.open-steps li { display: flex; align-items: center; gap: 14px; margin: 18px 0; font-size: 15px; line-height: 1.8; }
.step-number { flex: 0 0 28px; width: 28px; height: 28px; display: grid; place-items: center; color: #168476; background: #eef8f4; border-radius: 50%; font-size: 13px; font-weight: 600; }
.open-steps strong { font-weight: 600; }
.copy-section { border-top: 1px solid #edf1f2; padding-top: 24px; }
.copy-section label { display: block; margin-bottom: 12px; font-size: 12px; color: #84918f; line-height: 1.7; }
#page-url { display: block; width: 100%; padding: 11px 12px; border: 1px solid #e2eae7; background: #f7faf9; border-radius: 6px; color: #4c6862; font-size: 12px; line-height: 1.6; text-align: center; }
.copy-button { display: inline-flex; justify-content: center; align-items: center; gap: 7px; min-height: 44px; padding: 10px 16px; margin-top: 10px; background: transparent; border: 0; border-radius: 6px; color: #168476; font-size: 13px; cursor: pointer; }
.copy-button:hover { background: #eff8f4; }
.copy-status { min-height: 22px; font-size: 12px; line-height: 1.7; margin: 0; color: #168476; }
.noscript-message { max-width: 460px; margin: 60px auto; padding: 24px; text-align: center; line-height: 1.8; }
.noscript-message h1 { font-size: 30px; }
.noscript-message p { color: #6b7d7c; }
@media (max-width: 600px) {
  .header-inner { min-height: 68px; padding: 10px 20px; }
  .brand { gap: 6px; font-size: 16px; }
  .header-label { font-size: 11px; }
  .download-view { max-width: 420px; padding: 24px 28px 36px; }
  .app-icon { width: 186px; height: 186px; margin-bottom: 12px; }
  h1 { font-size: 36px; }
  .platform-caption { margin: 12px 0 30px; font-size: 14px; }
  .download-actions { grid-template-columns: 1fr; gap: 12px; }
  .download-link { min-height: 56px; padding: 15px 16px; font-size: 15px; }
  .download-divider { margin-top: 30px; }
  .site-footer { font-size: 10px; }
  .wechat-view { padding: 76px 26px 16px; }
  .wechat-content h1 { font-size: 28px; }
}
@media (max-height: 720px) and (max-width: 600px) {
  .download-view { padding-top: 8px; padding-bottom: 18px; }
  .app-icon { width: 144px; height: 144px; margin-bottom: 0; }
  .platform-caption { margin-bottom: 24px; }
  .download-divider { margin-top: 22px; }
  .wechat-view { padding-top: 52px; }
  .wechat-icon { width: 88px; height: 88px; }
  .wechat-description { margin-bottom: 22px; }
  .open-steps { margin-bottom: 24px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }