* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background: #f5f7fb;
    color: #333;
}

/* Header */
header {
    background: linear-gradient(135deg, #4f46e5, #06b6d4);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 24px;
}

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

nav a:hover {
    text-decoration: underline;
}

/* Hero Section */
.hero {
    height: 70vh;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background: url("https://images.unsplash.com/photo-1522071820081-009f0129c71c") center/cover;
    color: white;
    text-align: center;
}

.hero h2 {
    font-size: 40px;
}

.hero p {
    margin-top: 10px;
}

/* Cards */
.container {
    padding: 40px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

footer {
    text-align: center;
    padding: 20px;
    background: #111;
    color: white;
    margin-top: 40px;
}