:root{color-scheme:dark;font-family:system-ui,sans-serif;background:#0b1120;color:#e5ecf5}*{box-sizing:border-box}body{margin:0}main{max-width:820px;margin:auto;padding:32px 18px}h1{font-size:clamp(28px,6vw,42px);letter-spacing:-1px;margin:14px 0}h2{font-size:20px}p{line-height:1.6;color:#a9b7cd}.badge{font-size:12px;letter-spacing:3px;color:#76e4ca}section{background:#131e30;border:1px solid #26344b;border-radius:18px;padding:24px;margin:20px 0}label{display:block;margin:18px 0;color:#c8d4e5}input{display:block;width:100%;background:#0b1424;color:#fff;border:1px solid #3c4e68;border-radius:10px;padding:14px;font-size:16px;margin-top:8px}button{background:#80edcf;color:#10241f;border:0;border-radius:10px;padding:14px 18px;font-size:16px;font-weight:650;cursor:pointer}button:disabled{opacity:.5;cursor:default}.secondary{background:#29364c;color:#e5ecf5}.small{font-size:13px;padding:10px}.row{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap}.hint,footer{font-size:13px}footer{color:#7e90ab;margin:30px 0}.target{padding:16px 0;border-bottom:1px solid #2b3b51}.target strong{display:block;font-size:22px;margin-top:8px}.target span{color:#9dafc6;font-size:13px}progress{width:100%;height:10px;accent-color:#80edcf}#message:not(:empty){border-left:3px solid #f9c56d;padding:12px;color:#f9d99c}#history p{border-bottom:1px solid #2b3b51;padding:12px 0}#experiment{font-size:13px;color:#80edcf} [hidden]{display:none!important}