*{box-sizing:border-box}
body{margin:0;font-family:Arial,sans-serif;background:linear-gradient(135deg,#eaf7ff,#ffffff);color:#0f172a}
.back-home{position:fixed;top:20px;left:20px;background:#fff;border:1px solid #d8e6f4;border-radius:14px;padding:12px 18px;text-decoration:none;color:#0f172a;font-weight:900;box-shadow:0 15px 40px #0f172a15;z-index:99}
.wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.card{width:100%;max-width:540px;background:#fff;border:1px solid #dce7f3;border-radius:28px;box-shadow:0 30px 90px #0f172a20;padding:38px}
.logo{text-align:center;margin-bottom:24px}
.logo-box{display:inline-flex;align-items:center;gap:16px}
.logo-mark{width:70px;height:70px;border-radius:18px;background:linear-gradient(135deg,#0f83d5,#0c3968);display:grid;place-items:center;color:#fff;font-size:32px;font-weight:900;box-shadow:0 18px 40px #0f83d530}
.brand{font-size:38px;letter-spacing:9px;font-weight:900}
.tag{font-size:12px;letter-spacing:6px;color:#0aa36d;font-weight:800;margin-top:5px}
h1{margin:8px 0 8px;font-size:32px;text-align:center}
p{color:#64748b;margin:0 0 20px;line-height:1.45;text-align:center}
.switch{display:grid;grid-template-columns:1fr 1fr;gap:10px;background:#f3f8ff;border-radius:18px;padding:8px;margin:20px 0}
.switch button{border:0;border-radius:14px;padding:15px;font-weight:900;cursor:pointer;background:transparent;font-size:16px}
.switch button.active{background:#0f83d5;color:#fff;box-shadow:0 10px 25px #0f83d530}
input,textarea{width:100%;min-height:56px;border:1px solid #dce7f3;border-radius:15px;padding:0 17px;margin:8px 0;font-size:16px;background:white}
textarea{padding:15px 17px;min-height:95px;resize:vertical}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn{width:100%;height:58px;border:0;border-radius:15px;background:#0f83d5;color:white;font-size:17px;font-weight:900;margin-top:12px;cursor:pointer}
.green{background:#10a66b}
.err{background:#fff0f0;color:#b91c1c;border-radius:12px;padding:12px;margin:12px 0}
.ok{background:#ecfdf5;color:#047857;border-radius:12px;padding:12px;margin:12px 0}
.small{font-size:13px;color:#64748b;text-align:center;margin-top:14px}
.hide{display:none}
@media(max-width:600px){
  .back-home{position:static;display:inline-block;margin:16px}
  .wrap{padding:12px}
  .card{padding:24px}
  .brand{font-size:28px;letter-spacing:6px}
  .grid2{grid-template-columns:1fr}
}