:root{font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#20252d;background:#f5f6f8;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--surface: #ffffff;--surface-soft: #f9fafb;--text: #20252d;--muted: #667085;--border: #dde2ea;--border-strong: #c9d2df;--accent: #1f7a5b;--accent-dark: #155f47;--accent-soft: #e8f4ef;--blue: #285d88;--danger: #b42318;--danger-soft: #fff0ed;--warning: #a15c07;--shadow: 0 18px 45px rgba(16, 24, 40, .12)}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}.app-shell{min-height:100vh;padding:28px}.login-shell{display:grid;min-height:100vh;place-items:center;padding:24px;background:linear-gradient(180deg,#f5f6f8f0,#f5f6f8),radial-gradient(circle at 18% 18%,rgba(31,122,91,.12),transparent 32%),radial-gradient(circle at 82% 12%,rgba(40,93,136,.1),transparent 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