:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --muted-text: #666666;
    --primary-color: #2563eb;
    --card-bg: #f8fafc;
    --border-color: #e2e8f0;
    --code-bg: #f1f5f9;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #0b0f14;
        --text-color: #e2e8f0;
        --muted-text: #94a3b8;
        --primary-color: #3b82f6;
        --card-bg: #1e293b;
        --border-color: #334155;
        --code-bg: #0f172a;
    }
}

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

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

h1, h2, h3 {
    font-weight: 800;
}

.brand {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.tagline {
    color: var(--muted-text);
    font-size: 1.2rem;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.button-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.2s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    filter: brightness(1.1);
}

.btn-outline {
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

.btn-outline:hover {
    background-color: var(--code-bg);
}

.warning {
    background-color: rgba(245, 158, 11, 0.1);
    border-left: 4px solid #f59e0b;
    padding: 1rem;
    margin: 2rem 0;
    border-radius: 4px;
}

.warning strong {
    color: #d97706;
}

footer {
    text-align: center;
    margin-top: 4rem;
    color: var(--muted-text);
    font-size: 0.9rem;
}

section {
    margin-bottom: 2.5rem;
}

ul {
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.75rem;
}

.effective-date {
    font-size: 0.9rem;
    color: var(--muted-text);
    margin-bottom: 2rem;
}