:root{font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;color:#172b49;background:#edf3fb}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 15% 8%,#e5efff,transparent 35%),linear-gradient(125deg,#edf3fc,#f9fbff)}.login-shell{display:grid;grid-template-columns:1.2fr .8fr;min-height:100vh}.login-intro{padding:clamp(44px,9vw,130px);background:linear-gradient(145deg,#0e203c,#1e3b69 65%,#355fa2);color:#fff;position:relative;overflow:hidden}.login-intro:after{content:"";position:absolute;width:58vw;height:58vw;right:-28vw;bottom:-32vw;border:1px solid #bcd4ff32;border-radius:50%;box-shadow:0 0 0 48px #bcd4ff0b,0 0 0 96px #bcd4ff08}.mark{display:grid;place-items:center;width:45px;height:45px;border-radius:14px;background:linear-gradient(140deg,#c99a47,#ffe0a0);color:#5c3c09;font:32px Georgia}.login-intro p{margin:34px 0 13px;color:#b9cdf0;font-weight:650}.login-intro h1{margin:0;font-size:clamp(32px,4vw,57px);line-height:1.18;letter-spacing:-.05em}.login-intro small{display:block;margin-top:28px;color:#a7c0eb}.login-card{align-self:center;justify-self:center;width:min(420px,calc(100% - 48px));padding:38px;border:1px solid #dce6f6;border-radius:22px;background:#ffffffd9;box-shadow:0 24px 65px #233d6a20;backdrop-filter:blur(20px)}.eyebrow{margin:0;color:#6380ae;font:700 10px ui-monospace,monospace;letter-spacing:.12em}.login-card h2{margin:8px 0 4px;font-size:27px}.hint{margin:0;color:#7b8ea9;font-size:13px}.login-card form{margin-top:25px}.login-card label{display:block;margin-top:15px;color:#506681;font-size:12px;font-weight:700}.login-card input{width:100%;margin-top:7px;border:1px solid #d8e2f1;border-radius:10px;background:#f9fbff;padding:12px;font:inherit;outline-color:#5481df}.login-button{width:100%;margin-top:24px;border:0;border-radius:11px;background:linear-gradient(135deg,#3a75e9,#2257bb);color:#fff;padding:13px;font:700 14px inherit;cursor:pointer;box-shadow:0 10px 20px #2c63c434}.login-button:disabled{opacity:.6}.login-button span{margin-left:8px}.error{min-height:18px;margin:12px 0 0;color:#cf4355;font-size:12px}.demo-note{margin:20px 0 0;border-top:1px solid #e7edf6;padding-top:15px;color:#8292aa;font-size:11px;line-height:1.8}.demo-note b{color:#506987}.auth-switch{margin:15px 0 0;color:#8393aa;font-size:12px;text-align:center}.auth-switch a{margin-left:5px;color:#2c67d2;font-weight:700;text-decoration:none}.auth-switch a:hover{text-decoration:underline}.register-card{margin:36px auto}@media(max-width:780px){.login-shell{grid-template-columns:1fr}.login-intro{min-height:290px;padding:42px}.login-intro p{margin:20px 0 8px}.login-card{margin: -25px auto 30px;z-index:1}.register-card{margin:-25px auto 30px}}