:root{color-scheme:dark light;font-family:system-ui,-apple-system,"PingFang SC",sans-serif;background:#111315;color:#e7e8eb}*{box-sizing:border-box}body{margin:0;padding:40px 18px}main{max-width:610px;margin:auto;background:#1b1e22;border:1px solid #30343a;border-radius:20px;padding:30px}.label{font-size:12px;letter-spacing:2px;color:#a2b8e6}h1{font-size:28px;margin:12px 0}h2{font-size:18px;margin:26px 0 14px}p{font-size:14px;line-height:1.8;color:#c2c7d0}.intro{margin-bottom:22px}.duration{display:flex;gap:10px}.duration span{flex:1;border:1px solid #343c49;border-radius:10px;padding:12px;font-size:12px;color:#b9c2d3}.duration strong{display:block;font-size:22px;color:#f0f3fa;margin-top:5px}label{display:block;font-size:13px;margin:16px 0}input{display:block;width:100%;margin-top:8px;background:#11151b;border:1px solid #404858;border-radius:8px;color:#eef1fa;padding:12px;font:inherit;font-size:16px}input:focus{outline:2px solid #85a8f0;outline-offset:1px}button{padding:12px 20px;border:0;border-radius:8px;font:inherit;background:#b8ceff;color:#162038;cursor:pointer;width:100%;margin-top:8px}button:disabled{opacity:.6;cursor:wait}.muted{font-size:12px;color:#8f98a8}#status{padding:10px 12px;background:#252a32;border-radius:8px}#qr{display:block;margin:18px auto;max-width:100%;height:auto;border:10px solid white;border-radius:8px;background:white}a{color:#bdd1ff;margin-right:20px}[hidden]{display:none!important}@media(max-width:480px){body{padding:18px 12px}main{padding:22px 18px}.duration{flex-direction:column}} 

#modes{display:flex;gap:10px;margin:18px 0}#modes button{background:#252b36;color:#cbd5e9;border:1px solid #45506a}#modes button[aria-pressed="true"]{background:#b8ceff;color:#162038;border-color:#b8ceff}