body {
    background-color: black;
    color: white;
    font-family: Arial;
    margin: 0;
    padding: 0;
    font-size: 16px;
}

.container {
    width: 90%;
    margin: 0 auto;
    padding: 20px 0;
    border-radius: 10px;
}

.header {
    text-align: center;
    padding: 30px 0;
}

.header h1 {
    font-size: 40px;
    color: white;
    margin: 0;
}

.nav {
    text-align: center;
    margin: 30px 0;
}

.nav a {
    display: inline-block;
    padding: 10px 20px;
    background-color: #333;
    color: white;
    text-decoration: none;
    margin: 0 5px;
    border: 1px solid #555;
    border-radius: 8px;
}

.nav a:hover {
    background-color: #555;
}

.hero {
    text-align: center;
    margin: 40px 0;
    padding: 0 20px;
}

.hero h2 {
    font-size: 28px;
    color: white;
    margin-bottom: 15px;
}

.hero p {
    font-size: 18px;
    margin-bottom: 20px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero img {
    max-width: 600px;
    width: 100%;
    height: auto;
    border: 2px solid #444;
    border-radius: 10px;
}

.featured-grid {
    margin: 40px 0;
}

.feature-card {
    background-color: #222;
    padding: 25px;
    margin: 20px 0;
    border: 1px solid #444;
    text-align: center;
    width: 45%;
    float: left;
    border-radius: 10px;
}

.feature-card h3 {
    color: white;
    margin-bottom: 10px;
}

.feature-card p {
    margin-bottom: 15px;
}

.feature-card a {
    display: inline-block;
    padding: 10px 20px;
    background-color: #444;
    color: white;
    text-decoration: none;
    border: 1px solid #555;
    border-radius: 8px;
}

.feature-card a:hover {
    background-color: #555;
}

.clearfix {
    clear: both;
}

.footer {
    text-align: center;
    padding: 25px;
    background-color: #111;
    margin-top: 40px;
    border-radius: 10px;
}

/* Simples responsive */
@media screen and (max-width: 768px) {
    .container {
        width: 95%;
    }
    
    .header h1 {
        font-size: 30px;
    }
    
    .feature-card {
        width: 100%;
        float: none;
        margin: 10px 0;
    }
}