:root{--ink:#142033;--muted:#6b778c;--line:#dfe5ec;--brand:#1687e8;--brand2:#25b8a6}*{box-sizing:border-box}html,body{min-height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#edf3f8}.page{min-height:100vh;min-height:100dvh;display:grid;grid-template-columns:minmax(320px,1.08fr) minmax(360px,.92fr)}.intro{position:relative;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;padding:52px clamp(38px,6vw,90px);color:#fff;background:linear-gradient(145deg,#102f51,#126fae 54%,#20a894)}.intro:before,.intro:after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.14)}.intro:before{width:520px;height:520px;right:-170px;top:-180px}.intro:after{width:350px;height:350px;left:-150px;bottom:-170px}.brand,.intro-copy,.intro-foot{position:relative;z-index:1}.brand{display:flex;align-items:center;gap:13px;color:#fff;text-decoration:none;font-size:21px;font-weight:750}.brand img{width:42px;height:42px}.intro-copy{max-width:570px;margin:auto 0}.eyebrow{font-size:12px;font-weight:700;letter-spacing:3px;opacity:.72}.intro h1{max-width:560px;margin:18px 0;font-size:clamp(35px,4.2vw,60px);line-height:1.1;letter-spacing:-2px}.intro p{max-width:540px;margin:0;font-size:16px;line-height:1.9;color:rgba(255,255,255,.78)}.intro-foot{font-size:12px;color:rgba(255,255,255,.58)}.login-side{position:relative;display:flex;align-items:center;justify-content:center;padding:40px;background:#f8fafc}.language-toggle{position:absolute;right:24px;top:22px;z-index:5}.login-box{width:100%;max-width:420px}.mobile-brand{display:none}.login-box h2{margin:0 0 9px;font-size:30px}.sub{margin:0 0 34px;color:var(--muted);font-size:14px}.field{margin-bottom:20px}.field label{display:block;margin-bottom:8px;font-size:14px;font-weight:650}.field input{width:100%;height:52px;padding:0 46px;border:1px solid var(--line);border-radius:12px;outline:0;background:#fff;color:var(--ink);font-size:15px}.field input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(22,135,232,.1)}.captcha-row{display:grid;grid-template-columns:1fr 132px;gap:10px}.captcha-row input{padding:0 14px}.captcha-image{width:132px;height:52px;border:1px solid var(--line);border-radius:12px;background:#fff;object-fit:cover;cursor:pointer}.options{margin:2px 0 26px;color:var(--muted);font-size:13px}.remember{display:flex;align-items:center;gap:8px}.remember input{width:16px;height:16px;margin:0;accent-color:var(--brand)}.submit{width:100%}.message{display:none;margin-top:16px;padding:11px 13px;border-radius:9px;font-size:13px}.message.show{display:block}.message.error{color:#aa2632;background:#fff0f1}.message.success{color:#087362;background:#eafaf6}.back{display:block;margin-top:28px;text-align:center;color:#728095;text-decoration:none;font-size:13px}@media(max-width:760px){.page{display:block}.intro{display:none}.login-side{min-height:100vh;min-height:100dvh;padding:28px 22px}.mobile-brand{display:flex;margin-bottom:48px;color:var(--ink)}.login-box h2{font-size:27px}.sub{margin-bottom:28px}.language-toggle{right:18px;top:18px}}

/* Layui buttons must respect authentication-stage visibility. */
[hidden]{display:none!important}
#restartLogin{margin-top:16px}