:root {
    --primary-purple: #6a1b9a;
    --light-purple: #f3e5f5;
    --accent-purple: #9c27b0;
    --text-color: #333;
    --white: #ffffff;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #fafafa;
    color: var(--text-color);
}

header {
    background: linear-gradient(135deg, var(--primary-purple), var(--accent-purple));
    color: var(--white);
    padding: 3rem 1rem;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 6px 15px rgba(106, 27, 154, 0.1);
    border-top: 4px solid var(--primary-purple);
}

.card h2 {
    color: var(--primary-purple);
    margin-top: 0;
}

.highlight {
    background-color: var(--light-purple);
    border-left: 5px solid var(--accent-purple);
}

.examples {
    background: #ede7f6;
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
}

ul, ol {
    padding-left: 1.5rem;
}

footer {
    text-align: center;
    padding: 2rem;
    color: var(--primary-purple);
    font-weight: 500;
}

@media (max-width: 600px) {
    .container {
        margin: 1rem auto;
    }
}