*{box-sizing:border-box}html{font-family:Inter,Segoe UI,Microsoft YaHei,sans-serif}body{margin:0;background:#f5f6fa;color:#22233a}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(100%,390px);background:#fff;border:1px solid #ececf2;border-radius:16px;box-shadow:0 18px 50px #22223b0d;padding:40px}.brand{font-size:15px;font-weight:700;color:#6d56d9;letter-spacing:1px}h1{font-size:25px;margin:30px 0 26px}label{display:block;font-size:13px;margin-bottom:18px;color:#4c4b64}input{display:block;width:100%;height:46px;margin-top:9px;padding:0 13px;border:1px solid #dedeea;border-radius:9px;background:#fff;color:#22233a;font:inherit}input:focus{outline:2px solid #b6aaf2;outline-offset:1px}button[type=submit]{width:100%;height:46px;border:0;border-radius:9px;background:#7058df;color:#fff;font-weight:700;cursor:pointer}button:disabled{opacity:.6;cursor:wait}.error{min-height:20px;color:#c52642;font-size:12px;margin:0 0 10px}.back{display:block;margin:16px auto 0;border:0;background:none;color:#7564bf;cursor:pointer}@media(max-width:480px){.login-card{padding:30px 24px;border-radius:13px}}dialog{border:1px solid #ececf2;border-radius:14px;padding:28px;width:min(360px,calc(100vw - 40px));color:#22233a}dialog::backdrop{background:#22223b55}dialog h2{margin:0 0 24px;font-size:21px}