:root {
    --bg-color: #f4f4f9;
    --text-color: #333;
    --primary-color: #007bff;
    --card-bg: #fff;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #1a1a1a;
        --text-color: #e0e0e0;
        --primary-color: #4da3ff;
        --card-bg: #2d2d2d;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--text-color);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

h2 {
    margin-top: 2rem;
    color: var(--primary-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.button {
    display: inline-block;
    background-color: var(--primary-color);
    color: white !important;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    margin: 0.5rem;
    font-weight: bold;
}

.button:hover {
    opacity: 0.9;
    text-decoration: none;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
    text-align: center;
}

.feature {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.faq-item {
    margin-bottom: 1.5rem;
    background: var(--card-bg);
    padding: 1rem;
    border-radius: 8px;
}

.faq-item h3 {
    margin-top: 0;
}

footer {
    margin-top: 4rem;
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.8;
    border-top: 1px solid var(--text-color);
    padding-top: 1rem;
}