body { margin: 0; font-family: 'Roboto', sans-serif; color: #333; background-color: #f9f9f9; overflow-x: hidden; }
.container { max-width: 1440px; margin: 0 auto; padding: 20px; box-sizing: border-box; display: flex; flex-direction: column; align-items: center; }
header { width: 100%; background: linear-gradient(135deg, #4a90e2, #6c5ce7); color: white; padding: 30px 20px; text-align: center; position: relative; }
header h1 { font-size: 2.5em; margin: 0; }
.tabs-container { display: flex; justify-content: center; gap: 20px; margin-top: 20px; flex-wrap: wrap; }
.tab { cursor: pointer; padding: 15px 30px; background-color: #fff; border-radius: 30px; font-size: 1em; transition: all 0.3s ease; position: relative; }
.tab.active { background: linear-gradient(135deg, #ff9f43, #00b894); color: white; }
.tab:not(.active):hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1); }
.content-section { width: 100%; margin-top: 40px; display: none; }
.content-section.active { display: block; }
.card { background-color: white; border-radius: 15px; box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1); padding: 20px; margin-bottom: 20px; transition: transform 0.3s ease; }
.card:hover { transform: scale(1.05); }
.card img { width: 100%; height: auto; border-radius: 10px; margin-bottom: 15px; }
@media (max-width: 768px) { header h1 { font-size: 2em; } .tabs-container { flex-direction: column; align-items: center; } }
.node-animation { width: 50px; height: 50px; background-color: #4a90e2; border-radius: 50%; animation: pulse 2s infinite; margin: 20px auto; }
@keyframes pulse { 0% { transform: scale(1); } 50% { transform: scale(1.2); } 100% { transform: scale(1); } }
.example-article { background-color: #fff; padding: 30px; border-radius: 15px; box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1); margin-top: 40px; }
.example-article h2 { color: #4a90e2; }
.example-article pre { background-color: #f4f4f4; padding: 15px; border-radius: 10px; overflow-x: auto; }