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

body {
    font-family: "Open Sans", sans-serif;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: normal;
    font-variation-settings: "wdth" 100;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    color: #333;
    line-height: 1.6;
}

.container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    padding: 40px;
    max-width: 600px;
    width: 100%;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5em;
    color: #333;
    margin-bottom: 10px;
    font-weight: bold;
}

.subtitle {
    font-size: 1.1em;
    color: #666;
    font-weight: 300;
}

main {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

section h2 {
    font-size: 1.5em;
    color: #333;
    margin-bottom: 15px;
    font-weight: bold;
}

section ul {
    list-style: none;
}

section li {
    margin-bottom: 12px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #667eea;
    transition: all 0.2s ease;
}

section li:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

section a {
    color: #667eea;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: color 0.2s ease;
    display: block;
    width: 100%;
    height: 100%;
}

section a:hover {
    color: #764ba2;
    text-decoration: underline;
}

.description {
    display: block;
    color: #666;
    font-size: 0.9em;
    margin-top: 5px;
    font-weight: normal;
}

/* Responsive Design */
@media (max-width: 600px) {
    .container {
        padding: 30px 20px;
        margin: 10px;
    }
    
    header h1 {
        font-size: 2em;
    }
    
    .subtitle {
        font-size: 1em;
    }
    
    section h2 {
        font-size: 1.3em;
    }
    
    section li {
        padding: 12px;
    }
    
    section a {
        font-size: 1em;
    }
}