*{box-sizing:border-box}body{margin:0;font-family:-apple-system,"PingFang SC",sans-serif;background:#f7f7f8;color:#1b1b1f}
header{padding:32px 20px 12px}h1{margin:0;font-size:22px}.sub{margin:6px 0 0;color:#777;font-size:13px}
main{max-width:560px;margin:0 auto;padding:12px 20px 40px}form{display:flex;gap:8px;margin:16px 0}
input{flex:1;padding:10px;border:1px solid #ddd;border-radius:8px;font-size:14px}
button{padding:10px 16px;border:0;border-radius:8px;background:#111;color:#fff;font-size:14px}
ul{list-style:none;padding:0;margin:0}li{display:flex;justify-content:space-between;padding:12px;background:#fff;border-radius:8px;margin-bottom:8px;font-size:14px}
.total{text-align:right;color:#444;font-size:14px}