.channel-icon { width: 24px; height: 24px; flex: 0 0 24px; vertical-align: middle; }
.btn .channel-icon { width: 20px; height: 20px; flex-basis: 20px; }
.channel-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.channel-label { display: block; color: #a6adb5; font-size: 13px; margin-bottom: 8px; }
.download-platforms { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-block: 32px; }
.download-platform { min-width: 0; border: 1px solid #30353d; background: #101317; padding: clamp(24px, 3vw, 36px); }
.download-platform-header { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.download-platform-header > .channel-icon { width: 36px; height: 36px; flex-basis: 36px; color: var(--accent); }
.download-platform-header h3 { font-size: 28px; line-height: 1.1; margin: 0; }
.download-platform > p { color: #b3bac3; font-size: 15px; line-height: 1.65; margin: 0 0 24px; }
.channel-link { display: flex; align-items: center; gap: 16px; min-height: 88px; padding: 18px 20px; color: var(--fg); background: #191e24; border: 1px solid #363d47; text-decoration: none; transition: border-color var(--motion-fast) var(--ease), background var(--motion-fast) var(--ease); }
.channel-link + .channel-link { margin-top: 12px; }
.channel-link:hover { background: #20262e; border-color: var(--accent); }
.channel-link > .channel-icon { color: var(--accent); }
.channel-link-copy { flex: 1; min-width: 0; }
.channel-link-copy strong { display: block; font-size: 16px; font-weight: 500; line-height: 1.4; }
.channel-link-copy small { display: block; color: #a6adb5; font-size: 13px; line-height: 1.5; margin-top: 4px; }
.channel-external { color: var(--accent); font-size: 20px; }
.contact-channels { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.contact-channel { display: flex; align-items: flex-start; gap: 20px; padding: 28px; border: 1px solid #30353d; background: #101317; color: var(--fg); text-decoration: none; min-width: 0; }
.contact-channel > .channel-icon { margin-top: 4px; color: var(--accent); }
.contact-channel > div { min-width: 0; }
.contact-channel strong { display: block; font-family: var(--font-display); font-weight: 500; font-size: clamp(20px, 2vw, 26px); overflow-wrap: anywhere; }
.contact-channel p { margin: 12px 0 0; color: #a6adb5; font-size: 14px; }
.channel-link:focus-visible, a.contact-channel:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.download-support { display: flex; gap: 16px 24px; flex-wrap: wrap; align-items: center; }
.download-support a { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; color: var(--accent); font-size: 14px; }
.download-support p { margin: 0; color: #a6adb5; font-size: 14px; }
.bullink-access-intro { max-width: 760px; }
.bullink-detail-page .bullink-device-note { margin-top: 32px; }
.footer .footer-email { display: inline-flex; align-items: center; gap: 8px; margin-top: 20px; color: var(--fg-2); font-size: 13px; overflow-wrap: anywhere; max-width: 100%; }
.footer-email span { min-width: 0; }
.footer .footer-email .channel-icon { width: 18px; height: 18px; flex-basis: 18px; }
.footer .wechat-instruction { color: var(--muted); font-size: 12px; line-height: 1.6; margin-top: 12px; }
@media (max-width: 760px) {
  .download-platforms, .contact-channels { grid-template-columns: 1fr; gap: 16px; }
  .channel-link { padding: 16px; gap: 12px; }
  .contact-channel { padding: 24px; gap: 16px; }
}
@media (prefers-reduced-motion: reduce) { .channel-link { transition: none; } }