*{box-sizing:border-box;margin:0;padding:0}body{font-family:system-ui,-apple-system,sans-serif;font-size:16px;color:#1a1a1a;background:#f5f5f4;min-height:100dvh}#app{max-width:480px;margin:0 auto;min-height:100dvh;background:#fff}.offline-banner{background:#854f0b;color:#fff;padding:10px 16px;font-size:14px;text-align:center}.sync-banner{background:#0f6e56;color:#fff;padding:10px 16px;font-size:14px;display:flex;justify-content:space-between;align-items:center}.sync-banner button{background:none;border:none;color:#fff;font-size:18px;cursor:pointer}