*  {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
        
    body {
        font-family: Arial, sans-serif;
        line-height: 1.6;
        color: #333;
    }
        
    nav {
        background-color: #2c3e50;
        padding: 1rem 0;
        position: sticky;
        top: 0;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }
        
    nav ul {
        list-style: none;
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 2rem;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 1rem;
    }
        
    nav a {
        color: white;
        text-decoration: none;
        font-weight: 500;
        transition: color 0.3s ease;
    }
        
    nav a:hover {
        color: #3498db;
    }
    
    main {
        max-width: 1200px;
        margin: 2rem auto;
        padding: 0 1rem;
    }
        
    h1 {
        color: #2c3e50;
        margin-bottom: 1rem;
        font-size: 2.5rem;
    }
    
    p {
        margin-bottom: 1rem;
        font-size: 1.1rem;
    }

    .feature-list { list-style: none; padding: 0; margin: 0; }
    .feature-list li { background: #fff; border: 1px solid #e5e7eb; border-radius: 12px; padding: 18px 20px; margin-bottom: 14px; }
    .hero { background: #3b82f6; color: #fff; padding: 40px 10px 40px 30px; border-radius: 14px; box-shadow: 0 10px 30px rgba(59, 130, 246, 0.16); margin-bottom: 20px;}
    .hero h1 { margin-top: 0; font-size: 2.8rem; line-height: 1.1; color: #fff; }
    .hero p { margin: 20px 0 0; font-size: 1.05rem; max-width: 720px; }