:root{--bg:#f3f6fa;--panel:#fff;--ink:#091321;--muted:#718096;--line:#e2e8f0;--blue:#0874e8;--blue2:#4db9ff;--nav:#07111f;--danger:#b42318;--success:#087443;--warn:#a15c00;--shadow:0 12px 30px rgba(16,33,55,.07)}*{box-sizing:border-box}html{min-height:100%}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--ink);display:grid;grid-template-columns:255px 1fr;min-height:100vh}.sidebar{background:linear-gradient(180deg,#07111f,#091827);color:white;padding:28px 20px;position:relative}.brand{display:flex;gap:12px;align-items:center;margin-bottom:34px}.brandmark{width:44px;height:44px;border-radius:13px;background:linear-gradient(145deg,var(--blue),var(--blue2));display:grid;place-items:center;font-size:25px;font-weight:900;box-shadow:0 10px 24px rgba(8,116,232,.26)}.brand span{display:block;color:#8ea0ba;font-size:12px;margin-top:2px}.brand b{font-size:17px}nav{display:grid;gap:7px}nav 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