body { margin: 0; font-family: 'Roboto', sans-serif; background: #f5f5f5; color: #333; line-height: 1.6; overflow-x: hidden; }
.container { max-width: 1440px; margin: 0 auto; padding: 20px; display: grid; grid-template-columns: repeat(12, 1fr); gap: 20px; }
.header { grid-column: span 12; background: linear-gradient(135deg, #0074D9, #4682B4); color: white; padding: 30px; text-align: center; border-radius: 10px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
.header h1 { font-size: 2.5em; margin: 0; }
.header p { font-size: 1.2em; margin-top: 10px; }
.nav { grid-column: span 12; display: flex; justify-content: center; gap: 20px; margin-bottom: 20px; }
.nav a { text-decoration: none; color: #0074D9; font-weight: bold; transition: color 0.3s ease; }
.nav a:hover { color: #4682B4; }
.card { background: white; border-radius: 10px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); overflow: hidden; transition: transform 0.3s ease; }
.card:hover { transform: scale(1.05); }
.card img { width: 100%; height: auto; object-fit: cover; }
.card-content { padding: 20px; }
.card-content h3 { margin-top: 0; font-size: 1.5em; color: #0074D9; }
.card-content p { font-size: 1em; color: #555; }
.grid-section { grid-column: span 12; display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
@media (max-width: 768px) { .container { grid-template-columns: 1fr; padding: 10px; } }
@media (min-width: 769px) and (max-width: 1024px) { .container { grid-template-columns: repeat(8, 1fr); } }
@media (min-width: 1025px) and (max-width: 1200px) { .container { grid-template-columns: repeat(10, 1fr); } }
.article { grid-column: span 8; margin: 0 auto; background: white; padding: 30px; border-radius: 10px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
.article h2 { font-size: 2em; color: #0074D9; margin-bottom: 20px; }
.article h3 { font-size: 1.5em; color: #4682B4; margin-top: 30px; }
.article p { font-size: 1em; line-height: 1.8; color: #333; }
.article pre { background: #f9f9f9; padding: 15px; border-radius: 5px; overflow-x: auto; font-size: 0.9em; color: #555; }
.footer { grid-column: span 12; text-align: center; padding: 20px; background: #0074D9; color: white; font-size: 1em; margin-top: 20px; border-radius: 10px; }