:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:#f2eadc;background:#100d0a}*{box-sizing:border-box}html,body{min-height:100%;margin:0}.activity-bg{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 50% 18%,#332719 0,#1b1510 38%,#0d0b09 100%)}.activity-card{width:min(520px,100%);padding:34px;border:1px solid #685235;border-radius:20px;background:linear-gradient(180deg,#231c14,#17120e);box-shadow:0 24px 80px #0009;text-align:center}.activity-mark{font-size:40px;color:#dfb762}.activity-card h1{font:700 clamp(26px,5vw,40px)/1.1 Georgia,serif;margin:7px 0 10px}.activity-card p{color:#c6b9a7;margin:0 auto 26px;max-width:410px}.code-form{display:grid;gap:12px}.code-form label{font-weight:800;text-transform:uppercase;letter-spacing:.08em;font-size:12px;color:#baa98f}.code-form input{width:100%;padding:16px 14px;border-radius:12px;border:1px solid #745c3d;background:#0e0b09;color:#fff;text-align:center;font-size:clamp(25px,7vw,38px);font-weight:900;letter-spacing:.16em;text-transform:uppercase}.code-form input:focus{outline:2px solid #d7a957;outline-offset:2px}.code-form button{border:0;border-radius:11px;padding:14px 18px;background:#c79543;color:#171007;font-weight:900;cursor:pointer}.code-form button:disabled{opacity:.55;cursor:wait}.activity-status{min-height:24px;margin-top:18px;color:#aa9d8b;font-size:14px}.activity-status.error{color:#ff9b92}.activity-status.success{color:#8be0a9}@media(max-width:560px){.activity-bg{padding:14px}.activity-card{padding:24px 18px}.code-form input{letter-spacing:.1em}}