:root{--navy:#1f2f4d;--ink:#263548;--muted:#6e7c8e;--line:#dfe5ec;--paper:#fff;--bg:#f3f6f9;--accent:#c9972f;--danger:#b64040;--font:"Noto Sans SC","PingFang SC","Yu Gothic",sans-serif}
*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--ink);font-family:var(--font);display:grid;place-items:center;padding:24px}.login-shell{width:min(920px,100%);min-height:520px;background:var(--paper);border:1px solid var(--line);display:grid;grid-template-columns:320px 1fr;box-shadow:0 16px 42px rgba(31,47,77,.12)}.brand-panel{background:var(--navy);color:#fff;padding:46px 38px;display:flex;flex-direction:column;justify-content:space-between}.brand-lockup img{width:72px;height:72px;object-fit:cover;border-radius:4px;background:#fff}.brand-lockup h1{font-size:25px;margin:20px 0 5px;letter-spacing:0}.brand-lockup p{font-size:13px;margin:0;color:rgba(255,255,255,.72)}.brand-foot{font-size:11px;color:rgba(255,255,255,.55)}.form-panel{padding:66px 72px;display:flex;flex-direction:column;justify-content:center}.form-panel h2{font-size:24px;letter-spacing:0;margin:0 0 7px;color:var(--navy)}.subtitle{font-size:13px;color:var(--muted);margin:0 0 34px}.field{margin-bottom:18px}.field label{display:block;font-size:12px;font-weight:600;margin-bottom:7px}.field input{display:block;width:100%;height:43px;border:1px solid var(--line);border-radius:4px;padding:0 12px;font:14px var(--font);color:var(--ink);outline:none}.field input:focus{border-color:#8090a5;box-shadow:0 0 0 3px rgba(31,47,77,.08)}.login-button{height:43px;border:0;border-radius:4px;background:var(--navy);color:#fff;font:600 14px var(--font);cursor:pointer;margin-top:7px}.login-button:hover{background:#16243d}.login-button:disabled{opacity:.6;cursor:wait}.error{min-height:20px;font-size:12px;color:var(--danger);margin-bottom:8px}.locale{position:fixed;right:20px;top:18px;border:1px solid var(--line);background:#fff;color:var(--muted);height:32px;padding:0 12px;border-radius:4px;cursor:pointer}
@media(max-width:720px){body{padding:0;display:block;background:#fff}.login-shell{display:block;border:0;box-shadow:none;min-height:100vh}.brand-panel{min-height:190px;padding:34px 28px}.brand-lockup img{width:56px;height:56px}.brand-lockup h1{font-size:22px;margin-top:13px}.brand-foot{display:none}.form-panel{padding:42px 28px}.locale{top:14px;right:14px}}