body { margin: 0; font-family: 'Lato', sans-serif; color: #e0e0e0; background: #0a0a0a; overflow-x: hidden; }
h1, h2, h3 { font-family: 'Roboto', sans-serif; font-weight: bold; }
.navbar { position: fixed; top: 0; width: 100%; background: rgba(18,18,18,0.9); z-index: 1000; display: flex; justify-content: space-between; align-items: center; padding: 15px 30px; box-shadow: 0 4px 6px rgba(0,0,0,0.2); }
.navbar ul { list-style: none; display: flex; gap: 20px; }
.navbar li a { color: #fff; text-decoration: none; font-size: 16px; transition: all 0.3s ease; padding: 10px 15px; border-radius: 5px; }
.navbar li a:hover { background: linear-gradient(90deg, #0074ff, #a800ff); color: #fff; transform: scale(1.05); }
.hero { height: 100vh; background: url('https://images.gptkong.com/demo/sample1.png'), url('https://images.gptkong.com/demo/sample2.png'); background-size: cover; background-position: center; position: relative; display: flex; align-items: center; justify-content: center; text-align: center; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(135deg, rgba(0,116,255,0.7), rgba(168,0,255,0.7)); }
.hero h1 { font-size: 48px; color: #fff; z-index: 2; position: relative; animation: fadeIn 2s ease-in-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; padding: 100px 20px; background: #121212; }
.feature-card { background: #1e1e1e; border-radius: 15px; padding: 20px; text-align: center; transition: all 0.3s ease; position: relative; overflow: hidden; }
.feature-card img { width: 100px; height: 100px; object-fit: cover; border-radius: 50%; margin-bottom: 15px; transition: transform 0.5s ease; }
.feature-card:hover img { transform: scale(1.2) rotate(15deg); }
.feature-card h3 { font-size: 24px; margin-bottom: 10px; }
.feature-card p { font-size: 16px; line-height: 1.6; }
.content-section { padding: 80px 20px; background: #0a0a0a; }
.content-section h2 { text-align: center; margin-bottom: 40px; position: relative; }
.content-section h2::after { content: ''; position: absolute; bottom: -10px; left: 50%; transform: translateX(-50%); width: 60px; height: 3px; background: linear-gradient(90deg, #0074ff, #a800ff); }
.article-container { max-width: 1200px; margin: 0 auto; line-height: 1.8; font-size: 18px; }
.article-container pre { background: #1e1e1e; padding: 20px; border-radius: 10px; overflow-x: auto; margin: 20px 0; }
.article-container code { color: #61dafb; }
@media (max-width: 768px) { .features { grid-template-columns: 1fr; } .hero h1 { font-size: 36px; } }
.footer { background: #000; color: #aaa; padding: 30px 20px; text-align: center; font-size: 14px; }