body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #4287f5;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
    padding: 40px 20px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

header {
    background: #4287f5;
    color: #ffffff;
    padding: 40px 20px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
    margin: 0;
    font-size: 2.5em;
    font-weight: 700;
}

nav {
    margin: 20px 0 0 0;
    display: flex;
    justify-content: center;
    gap: 30px;
}

nav a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1em;
    transition: opacity 0.3s ease;
}

nav a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.hero {
    text-align: center;
    margin-bottom: 60px;
    padding: 40px;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.hero h2 {
    font-size: 2em;
    margin: 0 0 15px 0;
    color: #667eea;
}

.hero p {
    font-size: 1.2em;
    color: #666;
    margin: 0;
}

.featured {
    margin-bottom: 60px;
}

.featured h3 {
    font-size: 1.8em;
    text-align: center;
    margin-bottom: 40px;
    color: #333;
}

.overview-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.card {
    background: #ffffff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.card h4 {
    font-size: 1.5em;
    margin: 0 0 15px 0;
    color: #667eea;
}

.card p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.btn {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.3s ease;
}

.btn:hover {
    opacity: 0.9;
}

.highlight {
    background: #ffffff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.highlight h3 {
    font-size: 1.8em;
    margin-top: 0;
    color: #333;
}

.highlight ul {
    list-style: none;
    padding: 0;
}

.highlight li {
    padding: 12px 0;
    border-bottom: 1px solid #eee;
    font-size: 1.1em;
    color: #555;
}

.highlight li:before {
    content: "✓ ";
    color: #667eea;
    font-weight: bold;
    margin-right: 10px;
}

.highlight li:last-child {
    border-bottom: none;
}

footer {
    background: #333;
    color: #ffffff;
    text-align: center;
    padding: 20px 0;
    width: 100%;
    margin-top: auto;
    border-top: 1px solid #555;
}

footer p {
    margin: 0;
    font-size: 0.95em;
}