:root{--ink:#263e34;--green:#49735e;--muted:#758077;--paper:#f6f5ef;--cream:#fffefa;--line:#dfe4d8;--red:#ac4539;--gold:#c69853;font-family:"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;scroll-behavior:smooth}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input,summary{outline-offset:5px}button,.button{cursor:pointer}button:disabled{opacity:.5;cursor:wait}img{max-width:100%;display:block}p{line-height:1.85}.wrap{max-width:1180px;margin:auto;padding-left:32px;padding-right:32px}.site-header{height:100px;max-width:1310px;padding:0 48px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:inline-flex;gap:10px;align-items:center;font-size:25px;font-weight:700;letter-spacing:2px;white-space:nowrap}.brand-mark{display:grid;place-items:center;width:44px;height:47px;border-radius:16px 16px 5px 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p{font-size:12px;color:var(--muted);max-width:790px;margin:15px 0 2px}.site-footer{display:flex;align-items:center;justify-content:space-between;gap:25px;padding-top:30px;padding-bottom:34px;border-top:1px solid var(--line)}.site-footer .brand{font-size:19px}.site-footer .brand-mark{width:34px;height:37px;font-size:21px}.site-footer .brand small{font-size:6px}.site-footer p,.site-footer>a:last-child{font-size:10px;color:var(--muted)}
.auth-layout{min-height:100vh;display:grid;grid-template-columns:1fr 1fr}.auth-aside{background:#e9eddf;padding:44px 64px;display:flex;flex-direction:column;position:relative;overflow:hidden}.auth-aside h1{font:700 38px/1.6 "SimSun",serif;margin:62px 0 16px}.auth-aside>p{font-size:13px;color:var(--muted);max-width:330px}.auth-illustration{margin-top:35px;position:relative;overflow:hidden;height:285px;border-radius:12px;max-width:410px}.auth-illustration img{position:absolute;width:300%;max-width:none;top:50%;transform:translateY(-50%)}.auth-aside>.fine{margin-top:24px;font-size:10px}.auth-main{display:grid;place-items:center;padding:55px 45px;background:var(--cream)}.auth-box{max-width:370px;width:100%}.auth-box>.brand{display:none}.auth-box h2{font:700 29px "SimSun",serif;margin:0 0 14px}.auth-box>p{font-size:12px;color:var(--muted);margin:0 0 27px}.auth-form{display:grid;gap:18px}.field{display:grid;gap:8px;font-size:12px}.field input{width:100%;min-height:47px;padding:12px 14px;border:1px solid #d9dfd1;border-radius:7px;color:var(--ink);background:#fcfcf7;min-width:0}.field input:focus{outline:2px solid #a1b499;border-color:#a1b499}.field small{font-size:10px;color:var(--muted);line-height:1.7}.auth-form .button{width:100%;margin-top:7px}.form-status{font-size:12px;color:var(--red);margin:0;min-height:0;line-height:1.8}.form-status:empty{display:none}.auth-links{display:flex;justify-content:space-between;gap:18px;margin-top:22px;font-size:12px;color:var(--green)}.auth-note{font-size:10px!important;line-height:1.9;margin-top:27px!important}.auth-note a{text-decoration:underline}.recovery-panel{background:#eff2e7;padding:24px;border-radius:10px}.recovery-panel h3{margin-top:0;font-size:20px}.recovery-panel p{font-size:12px;color:#64715f}.recovery-code{display:block;word-break:break-all;padding:14px;background:white;border:1px dashed #b6c5aa;font:14px/1.7 monospace;user-select:all}.recovery-panel .button{margin-top:16px;width:100%}.recovery-panel .text-link{display:block;text-align:center;margin:20px auto 0;border:0;font-size:12px}
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@media(max-width:1000px){.site-header{padding:0 28px}.hero{gap:35px;padding-top:44px}.hero h1{font-size:47px}.hero-intro{font-size:13px}.demo-scene{height:195px}.book-copy>p[lang]{font-size:18px}.roadmap{gap:60px}.auth-aside{padding:38px}.auth-aside h1{font-size:32px}.steps{gap:20px}.sample-controls span{width:100%;margin:0}}
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@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*{transition:none!important}}