body, html { margin: 0; padding: 0; width: 100%; height: 100%; font-family: 'Roboto', sans-serif; background: linear-gradient(to bottom, #121212, #1E1E1E); color: #fff; overflow-x: hidden; }
header { position: fixed; top: 0; width: 100%; z-index: 1000; background: rgba(26, 35, 126, 0.9); padding: 20px; transition: background 0.3s; display: flex; justify-content: space-between; align-items: center; box-sizing: border-box; }
header.scrolled { background: #1A237E; }
.logo { font-family: 'Helvetica Neue', sans-serif; font-weight: bold; font-size: 24px; color: #fff; text-decoration: none; }
nav { display: flex; gap: 20px; }
nav a { color: #fff; text-decoration: none; font-size: 18px; transition: color 0.3s; }
nav a:hover { color: #2979FF; }
.hero { position: relative; height: 100vh; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 20px; box-sizing: border-box; }
.hero h1 { font-family: 'Helvetica Neue', sans-serif; font-weight: bold; font-size: 48px; margin-bottom: 20px; }
.hero p { font-size: 24px; margin-bottom: 40px; }
.cta-button { background: #2979FF; color: #fff; padding: 15px 30px; border-radius: 50px; font-size: 20px; text-decoration: none; transition: transform 0.3s, box-shadow 0.3s; display: inline-block; }
.cta-button:hover { transform: scale(1.1); box-shadow: 0 0 20px #2979FF; }
.features { display: flex; flex-wrap: wrap; justify-content: space-around; padding: 100px 20px 20px; box-sizing: border-box; }
.feature { background: rgba(255, 255, 255, 0.1); border-radius: 15px; padding: 30px; margin: 20px; width: 45%; min-width: 300px; box-sizing: border-box; transition: transform 0.3s; display: flex; gap: 20px; align-items: center; }
.feature:hover { transform: translateY(-10px); }
.feature img { max-width: 100px; height: auto; border-radius: 10px; }
.feature-content h3 { margin: 0 0 10px; font-size: 24px; }
.feature-content p { font-size: 18px; }
.article { background: rgba(255, 255, 255, 0.05); padding: 40px; margin: 40px; border-radius: 20px; box-sizing: border-box; }
.article h2 { font-size: 32px; margin-bottom: 20px; }
.article p { font-size: 18px; line-height: 1.6; margin-bottom: 20px; }
.article h3 { font-size: 28px; margin-top: 30px; }
footer { text-align: center; padding: 20px; background: #1A237E; }
@media (max-width: 768px) { header { flex-direction: column; } nav { flex-direction: column; gap: 10px; } .hero h1 { font-size: 36px; } .features { flex-direction: column; align-items: center; } .feature { width: 90%; } }