:root{--orange:#fab931;--blue:#0c5885;--sky:#39a9d2;--ink:#0b1f2a;--muted:#6f7e86;--bg:#f5f8fa;--card:#fff;--border:#e7edf0;--shadow:0 20px 50px rgba(11,31,42,.08)}*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink)}a{text-decoration:none;color:inherit}.app-shell{min-height:100vh;display:flex}.sidebar{position:fixed;inset:0 auto 0 0;width:260px;background:linear-gradient(180deg,#083e5f,#0c5885);color:#fff;padding:22px 16px;display:flex;flex-direction:column;z-index:20}.brand-block,.login-brand{display:flex;align-items:center;gap:12px}.brand-mark{width:42px;height:42px;border-radius:14px;background:var(--orange);color:#0c5885;font-weight:900;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px 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