:root{--gb-blue:#0055a4;--gb-light-bg:#f8f9fa;--text-dark:#333;--border-color:#e0e0e0;}body{font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background-color:var(--gb-light-bg);color:var(--text-dark);line-height:1.6;}.container{max-width:1100px;margin:0 auto;padding:0 20px;}.header-gb{background:#ffffff;border-bottom:3px solid var(--gb-blue);padding:20px 0;margin-bottom:40px;}h1{color:var(--gb-blue);font-weight:700;font-size:2.5rem;margin-bottom:1.5rem;border-left:5px solid var(--gb-blue);padding-left:15px;}.node{background:#fff;padding:30px;border-radius:8px;box-shadow:0 2px 10px rgba(0,0,0,0.05);margin-bottom:30px;}.sidebar{background:#eee;padding:20px;border-radius:4px;}.main-grid{display:flex;gap:30px;}.content-area{flex:3;}.sidebar{flex:1;}@media (max-width:768px){.main-grid{flex-direction:column;}}