:root{color:#102a2a;background:#f7fbfa;font-family:system-ui,-apple-system,sans-serif}*{box-sizing:border-box}body{min-width:320px;margin:0}button{font:inherit}.app-shell{max-width:680px;min-height:100dvh;padding:calc(2rem + env(safe-area-inset-top)) 1.25rem calc(5.75rem + env(safe-area-inset-bottom));margin:auto}.app-shell header p{color:#0f766e;text-transform:uppercase;letter-spacing:.08em;margin:0;font-size:.85rem;font-weight:700}h1{margin:.3rem 0;font-size:clamp(2rem,9vw,3rem)}.empty{background:#fff;border:1px solid #cfe4e1;border-radius:1rem;margin-top:2rem;padding:1.5rem}.empty h2{margin-top:0}.empty span{color:#42605e;line-height:1.5}nav{padding:.75rem 1rem calc(.75rem + env(safe-area-inset-bottom));background:#fff;border-top:1px solid #cfe4e1;grid-template-columns:1fr 1fr;gap:.5rem;display:grid;position:fixed;bottom:0;left:0;right:0}nav button{color:#42605e;background:0 0;border:0;border-radius:.65rem;min-height:2.75rem;font-weight:650}nav button.active{color:#fff;background:#0f766e}