:root{--brand: #5b4fe8;--brand-dark: #4840c4;--ink: #16151f;--ink-2: #5d5a70;--ink-3: #8e8ba3;--line: #e6e4ef;--surface: #ffffff;--bg: #f6f5fb;--ok: #1a8b5f;--warn: #b7791f;--danger: #c53434;--radius: 12px;--shadow: 0 1px 2px rgba(22, 21, 31, .04), 0 4px 16px rgba(22, 21, 31, .06)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}a{color:var(--brand)}.auth-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-card{width:100%;max-width:420px;background:var(--surface);border-radius:16px;padding:32px;box-shadow:var(--shadow)}.auth-card h1{margin:0 0 4px;font-size:22px}.auth-card .sub{margin:0 0 24px;color:var(--ink-2);font-size:14px}.auth-switch{margin-top:18px;text-align:center;font-size:14px;color:var(--ink-2)}.app-shell{display:flex;min-height:100vh}.sidebar{width:232px;flex-shrink:0;background:var(--surface);border-right:1px solid 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