*{box-sizing:border-box}body{margin:0;background:linear-gradient(125deg,#06101e,#0c2635);color:#f0f6f5;font:16px system-ui,-apple-system,Segoe UI,sans-serif;min-height:100vh;display:flex;flex-direction:column}a{color:#c4f2ef;text-decoration:none}.bt-auth-header{height:74px;padding:0 clamp(20px,4vw,56px);border-bottom:1px solid #284558;display:flex;justify-content:space-between;align-items:center}.bt-auth-logo{font-size:23px;font-weight:900;color:#fff}.bt-auth-logo span{color:#f36d4e}.bt-auth-logo small{display:block;font-size:10px;font-weight:650;letter-spacing:.12em;color:#92b1b3}.bt-auth-main{flex:1;display:flex;align-items:center;justify-content:center;padding:44px 20px}.bt-auth-panel{width:min(100%,490px);background:#0e2233;border:1px solid #284558;border-radius:20px;padding:32px;box-shadow:0 24px 50px #0003}.bt-auth-kicker{font-size:11px;letter-spacing:.17em;color:#51dbc8;font-weight:800}h1{font-size:40px;line-height:1.15;letter-spacing:-.045em;margin:17px 0 8px}p{line-height:1.5;color:#c9dce1}.bt-auth-panel form{margin-top:25px}.bt-auth-panel label{display:block;margin:18px 0 0;font-size:14px;font-weight:600}.bt-auth-panel input{display:block;width:100%;margin-top:7px;padding:14px 15px;font-size:16px;border-radius:9px;border:1px solid #4d6679;background:#253c50;color:#fff;outline-offset:3px}.bt-auth-panel input:focus{outline:2px solid #5fe5d0}.bt-auth-panel button{width:100%;margin-top:19px;border:0;border-radius:9px;padding:15px;background:#30c7b0;color:#062127;font-size:16px;font-weight:800;cursor:pointer}.bt-auth-panel button:hover{background:#65e3d0}.bt-auth-hint{font-size:12px;margin-top:22px}.bt-auth-error{margin-top:18px;background:#492838;border:1px solid #a45268;padding:12px;border-radius:9px;color:#fff}.bt-auth-footer{display:flex;justify-content:space-between;gap:20px;padding:18px clamp(20px,4vw,56px);border-top:1px solid #284558;font-size:12px;color:#91aeb7}@media(max-width:600px){.bt-auth-footer{flex-direction:column}.bt-auth-panel{padding:24px}h1{font-size:34px}}