* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background: #f7f7f7;
}

.container {
    width: 90%;
    max-width: 1000px;
    margin: auto;
}

header {
    background: #222;
    color: #fff;
    padding: 15px 0;
}

header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header ul {
    display: flex;
    list-style: none;
}

header ul li {
    margin-left: 20px;
}

header a {
    color: #fff;
    text-decoration: none;
}

.logo {
    font-size: 1.5em;
}

.hero {
    background: #444;
    color: #fff;
    padding: 60px 0;
    text-align: center;
}

.section {
    padding: 40px 0;
    background: #fff;
}

.section.alt {
    background: #eee;
}

.cards {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    flex: 1;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

footer {
    background: #222;
    color: #aaa;
    text-align: center;
    padding: 15px 0;
}