:root{--ink:#1e2a32;--muted:#6d7d81;--line:#dce4e1;--city:#2f6f73;--city-dark:#24595d;--mist:#e8f1ef;--sun:#f2b84b;--paper:#f4f7f5;--white:#fff}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible{outline:3px solid rgba(47,111,115,.2);outline-offset:2px}.auth-shell{min-height:100vh;display:grid;grid-template-columns:minmax(320px,1fr) minmax(420px,540px);max-width:1160px;margin:auto;padding:28px;gap:7vw;align-items:center}.auth-intro{min-height:600px;padding:14px 0;display:flex;flex-direction:column;justify-content:space-between}.auth-brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-size:16px;font-weight:700}.auth-brand span{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;color:#fff;background:var(--city);font-size:20px}.intro-copy{max-width:510px}.eyebrow{display:block;color:#738384;text-transform:uppercase;letter-spacing:.12em;font-size:10px;font-weight:700;margin-bottom:14px}.intro-copy h1{font-family:"Noto Serif SC","Songti SC",serif;font-size:clamp(36px,5vw,64px);line-height:1.13;letter-spacing:-.04em;font-weight:600;margin:0}.intro-copy h1 em{color:var(--city);font-style:normal}.intro-copy p{max-width:360px;color:var(--muted);line-height:1.8;font-size:15px;margin:20px 0 0}.intro-note{display:flex;gap:14px;align-items:flex-start;border-top:1px solid var(--line);padding-top:18px;max-width:370px}.intro-note span{font:700 11px Inter,monospace;color:var(--sun)}.intro-note p{margin:0;color:var(--muted);font-size:12px;line-height:1.7}.auth-card{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:32px;box-shadow:0 16px 40px rgba(30,42,50,.08)}.auth-card-head h2{font-size:28px;line-height:1.2;margin:0}.auth-card-head p{color:var(--muted);font-size:13px;margin:9px 0 0}.auth-tabs{display:flex;border-bottom:1px solid var(--line);margin:28px 0 22px;gap:20px}.auth-tabs button{border:0;background:transparent;color:#8d9b9c;padding:0 1px 11px;position:relative}.auth-tabs button.active{color:var(--city);font-weight:700}.auth-tabs button.active:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--city)}.auth-alert{border-radius:7px;background:#fff3cf;color:#805b12;padding:10px 11px;line-height:1.5;font-size:12px;margin-bottom:15px}.auth-alert.error{background:#fae5e1;color:#994b3e}.auth-form{display:grid;gap:15px}.auth-form label{display:grid;gap:7px;color:var(--muted);font-size:12px}.auth-form input{height:44px;width:100%;border:1px solid var(--line);border-radius:8px;padding:0 12px;background:#fff;color:var(--ink)}.auth-form input:focus{border-color:var(--city)}.password-field{position:relative}.password-field input{padding-right:54px}.password-field button{position:absolute;right:8px;top:5px;height:34px;border:0;background:transparent;color:var(--city);font-size:11px}.auth-submit{height:44px;border:0;border-radius:8px;background:var(--city);color:#fff;font-weight:700;margin-top:4px}.auth-submit:hover{background:var(--city-dark)}.link-button{border:0;background:transparent;color:var(--city);font-size:12px;justify-self:center}.form-note{color:var(--muted);font-size:11px;line-height:1.6;margin:0}.auth-privacy{padding-top:18px;border-top:1px solid var(--line);color:#8d9b9c;font-size:10px;line-height:1.6;margin:24px 0 0}@media(max-width:760px){.auth-shell{display:block;padding:20px 16px}.auth-intro{min-height:0;gap:44px;padding:8px 0 36px}.intro-copy h1{font-size:38px}.intro-copy p{font-size:13px}.intro-note{display:none}.auth-card{padding:24px 20px}.auth-card-head h2{font-size:24px}}