.izd-app{height:100vh;display:flex;flex-direction:column;font-family:system-ui;background:#f8fafc}
.izd-header{height:56px;background:#fff;border-bottom:1px solid #ddd;display:flex;align-items:center;padding:0 16px;font-weight:700}
.izd-canvas{flex:1;display:flex;align-items:center;justify-content:center;color:#64748b}
.izd-mobile-bar{height:64px;background:#fff;border-top:1px solid #ddd;display:flex;justify-content:space-around;align-items:center}
.izd-mobile-bar button{border:none;background:#e5e7eb;border-radius:14px;padding:8px 12px}