:root{font-family:Inter,"Microsoft YaHei",sans-serif;color:#182230;background:#f4f7fb}*{box-sizing:border-box}html{min-width:320px}body{margin:0;min-height:100vh;display:grid;place-items:center;padding:clamp(12px,4vw,40px)}.auth-shell{width:min(960px,100%);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);background:#fff;border-radius:20px;overflow:hidden;box-shadow:0 18px 50px #18324a18}.brand{padding:clamp(32px,7vw,72px) clamp(24px,6vw,56px);background:#17324d;color:#fff}.logo{font-size:42px;color:#6ee7b7}.brand h1{font-size:clamp(28px,4vw,36px);margin:28px 0 12px}.brand p{color:#bdd1df;line-height:1.7}.panel{padding:clamp(28px,6vw,52px);min-height:520px}h2{margin:0 0 8px;font-size:clamp(24px,3vw,28px)}.hint{color:#718096;margin:0 0 28px;line-height:1.6}label{display:block;font-size:14px;font-weight:600;margin:16px 0;color:#425466}input{display:block;width:100%;min-height:48px;padding:13px 14px;margin-top:8px;border:1px solid #d8e0e8;border-radius:9px;font-size:16px;outline:none}input:focus{border-color:#238b70;box-shadow:0 0 0 3px #238b7020}.primary{width:100%;min-height:48px;border:0;border-radius:9px;padding:13px 14px;margin-top:16px;background:#168269;color:#fff;font-size:16px;font-weight:700;cursor:pointer}.switch{text-align:center;color:#718096;margin-top:24px;line-height:1.8}.link{border:0;background:none;color:#168269;cursor:pointer;font-weight:700;font-size:inherit;padding:6px}.message{min-height:22px;text-align:center;color:#c0392b;margin-top:18px;line-height:1.5}.code-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;align-items:center}.code-row input{margin-top:8px}.send-code{min-height:48px;margin-top:8px;border:1px solid #168269;border-radius:9px;padding:0 12px;background:#e6f5f0;color:#136a56;font-weight:700;cursor:pointer;white-space:nowrap}.send-code:disabled{opacity:.6;cursor:wait}.captcha-backdrop{position:fixed;inset:0;z-index:20;background:#10283c80;display:flex;align-items:center;justify-content:center;padding:18px}.captcha-backdrop[hidden]{display:none}.captcha-box{width:min(380px,100%);background:#fff;border-radius:14px;padding:26px;box-shadow:0 24px 70px #10283c45}.captcha-question{display:block;text-align:center;font-size:28px;letter-spacing:.12em;color:#17324d;margin:18px 0}.captcha-box>input{margin-top:0}.captcha-actions{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:16px}.captcha-confirm{width:auto;margin:0;padding:10px 16px;min-height:42px}@media(max-width:700px){body{place-items:start center;padding:12px}.auth-shell{grid-template-columns:1fr;border-radius:14px;margin:auto}.brand{padding:26px 24px}.brand h1{margin:12px 0 8px}.brand p{margin:0}.panel{padding:28px 24px;min-height:0}}@media(max-width:380px){.panel{padding:24px 18px}.brand{padding:22px 18px}.code-row{grid-template-columns:1fr}.send-code{width:100%}}