:root{--paper:#f7f5ef;--card:#fffefb;--ink:#18312e;--muted:#6f7f7b;--teal:#167d70;--teal-dark:#0f5f56;--teal-soft:#e5f3ef;--line:#dfe7e3;--amber:#a76317;--amber-soft:#fff1d9;--danger:#a63b36;--shadow:0 16px 48px rgba(30,68,62,.09);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 90% 0,#dbeee8 0,transparent 34%),var(--paper)}button,input,select,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}.login-shell{min-height:100vh;display:grid;place-items:center;padding:28px}.login-card{width:min(440px,100%);background:rgba(255,254,251,.94);padding:42px;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow)}.brand-mark{display:grid;place-items:center;width:58px;height:58px;border-radius:18px;background:var(--teal);color:white;font-size:28px;font-weight:800;box-shadow:0 10px 26px rgba(22,125,112,.25)}.brand-mark.small{width:42px;height:42px;border-radius:13px;font-size:21px;box-shadow:none}.eyebrow{font-size:11px;letter-spacing:.15em;font-weight:800;color:var(--teal);margin:20px 0 7px}.login-card h1{font-size:30px;margin:0 0 8px}.muted{color:var(--muted);line-height:1.65;margin:0 0 28px}.stack{display:grid;gap:16px}label{display:grid;gap:7px;font-size:13px;font-weight:700}input,select,textarea{width:100%;border:1px solid #cfdad6;border-radius:12px;background:#fff;padding:12px 13px;color:var(--ink);outline:none}input:focus,select:focus,textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(22,125,112,.12)}textarea{resize:vertical}.primary,.secondary,.danger{border:0;border-radius:12px;padding:11px 16px;font-weight:800}.primary{background:var(--teal);color:#fff}.primary:hover{background:var(--teal-dark)}.secondary{background:#fff;border:1px solid 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