.mobile-app{max-width:430px;margin:0 auto;min-height:100vh;background:#f4f6fb;position:relative;display:flex;flex-direction:column;font-family:Inter,system-ui,-apple-system,PingFang SC,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased}.nav-bar{height:52px;background:linear-gradient(135deg,#059669,#34d399);box-shadow:0 2px 12px #05966940;color:#fff;display:flex;align-items:center;padding:0 14px;position:sticky;top:0;z-index:100;flex-shrink:0}.nav-back{width:34px;height:34px;border-radius:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s;-webkit-tap-highlight-color:transparent}.nav-back:active{background:#ffffff26}.nav-title{flex:1;text-align:center;font-size:17px;font-weight:600;letter-spacing:.02em}.nav-right{width:34px}.tab-bar{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:430px;height:60px;background:#ffffffe0;backdrop-filter:blur(20px) saturate(1.8);-webkit-backdrop-filter:blur(20px) saturate(1.8);display:flex;box-shadow:0 -1px #0000000a,0 -4px 16px #0000000f;z-index:100;padding-bottom:env(safe-area-inset-bottom,0)}.tab-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:10px;color:#9ca3b8;cursor:pointer;gap:2px;position:relative;transition:color .25s cubic-bezier(.16,1,.3,1),transform .15s cubic-bezier(.16,1,.3,1);-webkit-tap-highlight-color:transparent}.tab-item:active{transform:scale(.88)}.tab-item.active{color:#059669}.tab-dot{display:block;width:4px;height:4px;border-radius:50%;background:transparent;margin-top:2px;transition:background .25s cubic-bezier(.16,1,.3,1),transform .3s cubic-bezier(.34,1.56,.64,1)}.tab-item.active .tab-dot{background:#059669;animation:dotPop .35s cubic-bezier(.34,1.56,.64,1)}@keyframes dotPop{0%{transform:scale(0)}60%{transform:scale(1.5)}to{transform:scale(1)}}.copyright{position:fixed;bottom:60px;left:50%;transform:translate(-50%);width:100%;max-width:430px;padding:12px 0;text-align:center;background:linear-gradient(180deg,transparent,rgba(244,246,251,.8));z-index:90}.copyright-brand{font-size:13px;font-weight:600;color:#86909c;letter-spacing:1px}.copyright-slogan{font-size:11px;color:#c9cdd4;margin-top:4px;letter-spacing:2px}