:root{--primary-color: #0067b0;--secondary-color: #1c2033;--text-main: #1a202c;--text-muted: #718096;--bg-main: #f4f6f8;--border-color: #e2e8f0;--white: #ffffff;--danger: #e53e3e;--success: #38a169;--header-height: 64px;--sidebar-width: 240px}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Helvetica Neue,Arial,sans-serif;background:var(--bg-main);color:var(--text-main)}a{color:var(--primary-color);text-decoration:none}a:hover{text-decoration:underline}.mobile-only{display:none}@media (max-width: 768px){.mobile-only{display:block}.desktop-only{display:none}}