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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f6f9;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: #1a252f;
    color: #fff;
    padding: 40px 0;
    text-align: center;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 8px;
}

header p {
    color: #bdc3c7;
    font-size: 1rem;
}

main {
    margin: 40px auto;
}

.card {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.card h2 {
    font-size: 1.25rem;
    color: #2c3e50;
    margin-bottom: 12px;
    border-bottom: 2px solid #3498db;
    display: inline-block;
    padding-bottom: 4px;
}

.card p {
    margin-bottom: 12px;
}

.card ul {
    list-style-type: disc;
    padding-left: 20px;
}

.card li {
    margin-bottom: 8px;
}

footer {
    text-align: center;
    padding: 20px 0;
    color: #7f8c8d;
    font-size: 0.875rem;
}

a {
    color: #3498db;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}