body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: #111;
    color: white;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: #000;
    border-bottom: 1px solid #333;
}

header h1 {
    font-size: 24px;
}

.nav-links a {
    margin: 0 10px;
    color: white;
    text-decoration: none;
    font-weight: bold;
}

.nav-links a:hover {
    color: #ffcc00;
}

.btn {
    padding: 10px 18px;
    border: none;
    background: #ffcc00;
    color: black;
    font-weight: bold;
    border-radius: 6px;
}

.hero {
    text-align: center;
    padding: 100px 20px;
}

.hero h1 {
    font-size: 32px;
    margin-bottom: 20px;
}

.sample-section {
    text-align: center;
    padding: 40px 20px;
}

.market-grid {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.market-grid img {
    width: 250px;
    border-radius: 12px;
    border: 2px solid #555;
}