@font-face{font-family:Shanggu Song;src:local("Songti SC"),local("STSong"),local("SimSun")}@font-face{font-family:Shanggu Hei;src:local("Alibaba PuHuiTi"),local("PingFang SC"),local("Microsoft YaHei")}:root{--bg: #f5efe2;--paper: #fff9ea;--paper-soft: rgba(255, 250, 239, .82);--paper-strong: #fff4d8;--ink: #2a1d13;--ink-soft: #5f5142;--muted: #7f705e;--line: #d9c7a6;--line-strong: #b89f78;--seal: #7b1f16;--seal-dark: #55150f;--gold: #b17828;--green: #42664b;--danger: #9f2f22;--success: #326d42;--shadow: 0 18px 54px rgba(91, 62, 31, .14);--shadow-soft: 0 10px 28px rgba(91, 62, 31, .09);--radius: 18px}*{box-sizing:border-box}html{background:var(--bg)}body{margin:0;min-width:320px;background:radial-gradient(circle at 12% 12%,rgba(123,31,22,.08),transparent 28%),radial-gradient(circle at 92% 20%,rgba(177,120,40,.1),transparent 28%),linear-gradient(rgba(99,63,28,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(99,63,28,.055) 1px,transparent 1px),var(--bg);background-size:auto,auto,34px 34px,34px 34px,auto;color:var(--ink);font-family:Shanggu Hei,sans-serif}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;background-image:linear-gradient(115deg,transparent 0 42%,rgba(255,255,255,.34) 48%,transparent 54%),radial-gradient(circle at 50% 0,rgba(42,29,19,.04),transparent 40%);mix-blend-mode:multiply;opacity:.65}button,input,textarea,select{font:inherit}button{border:0;cursor:pointer}button:disabled{cursor:not-allowed;opacity:.62}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(123,31,22,.24);outline-offset:2px}.boot{display:grid;min-height:100vh;place-items:center;color:var(--muted)}.boot:before{content:"宁";width:58px;height:58px;display:grid;place-items:center;margin-right:14px;border-radius:50%;background:var(--seal);color:#fff7e7;font-weight:900}.login-page{position:relative;z-index:1;min-height:100vh;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(340px,430px);align-items:center;gap:48px;padding:48px clamp(20px,7vw,94px)}.login-hero{max-width:820px}.login-hero h1,.page-header h1,.chat-header h1{font-family:Shanggu Song,serif;font-weight:700;letter-spacing:.02em}.login-hero h1{max-width:760px;margin:18px 0;color:var(--ink);font-size:clamp(44px,6.6vw,86px);line-height:.98}.login-hero p{max-width:650px;color:var(--ink-soft);font-size:20px;line-height:1.9}.hero-badge,.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--seal);font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.18em}.hero-badge{padding:9px 12px;border:1px solid rgba(123,31,22,.18);border-radius:999px;background:#fff9eabd}.metric-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;max-width:680px;margin-top:38px;border:1px solid var(--line);border-radius:var(--radius);background:var(--line);overflow:hidden;box-shadow:var(--shadow-soft)}.metric-strip div{padding:22px;background:#fff9eae0}.metric-strip 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