*{box-sizing:border-box}body{color:#0b2442;background:#eef2f7;margin:0;font-family:Arial,sans-serif}.auth{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.card{text-align:center;background:#fff;border-radius:28px;width:min(520px,100%);padding:44px;box-shadow:0 15px 45px #0001}.logo{color:#fff;background:#4169df;border-radius:24px;justify-content:center;align-items:center;width:84px;height:84px;margin:0 auto 20px;font-size:34px;font-weight:800;display:flex}.card h1{margin:10px 0;font-size:48px}.card p{color:#65809f;margin:0 0 38px;font-size:24px}.card input{border:1px solid #d5deea;border-radius:20px;width:100%;margin:0 0 16px;padding:20px 22px;font-size:20px}.card button{color:#fff;cursor:pointer;background:#2868f5;border:0;border-radius:18px;width:100%;padding:19px;font-size:22px;font-weight:700}.card .link{color:#1762f2;background:0 0;margin-top:14px;padding:8px;font-weight:500}.card .install{color:#2868f5;background:#edf3ff;margin-top:14px}.err{color:#c21d1d;background:#fff0f0;border-radius:12px;margin-top:14px;padding:13px}.chat{background:#fff;flex-direction:column;max-width:1100px;height:100vh;margin:auto;display:flex}.chat header{border-bottom:1px solid #dde4ee;align-items:center;gap:14px;height:82px;padding:12px 18px;display:flex}.small{border-radius:18px;width:56px;height:56px;margin:0;font-size:22px}.chat header div:nth-child(2){flex:1}.chat header b{font-size:23px;display:block}.chat header span{color:#16a05d}.chat header button{color:#e22;background:#fff;border:0;font-size:16px}.messages{background:#f3f6fa;flex:1;padding:25px;overflow:auto}.msg{background:#fff;border-radius:16px;width:fit-content;max-width:75%;margin:8px 0;padding:10px 14px;box-shadow:0 2px 8px #0000000a}.msg.mine{background:#dce9ff;margin-left:auto}.msg strong{color:#2966d9;margin-bottom:4px;font-size:13px;display:block}.msg small{text-align:right;color:#8090a0;margin-top:5px;font-size:10px;display:block}.empty{text-align:center;color:#8190a5;margin-top:25vh}.chat footer{border-top:1px solid #dde4ee;gap:10px;padding:12px;display:flex}.chat footer input{border:1px solid #d5deea;border-radius:18px;flex:1;padding:16px 18px;font-size:18px}.chat footer button{color:#fff;background:#2868f5;border:0;border-radius:18px;width:60px;font-size:25px}.errbar{color:#b11;text-align:center;background:#fff0f0;padding:8px 15px}@media (max-width:600px){.card{padding:28px 20px}.card h1{font-size:38px}.card p{font-size:20px}.chat header{height:70px}.msg{max-width:88%}}