body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f4f4f5;
    color: #18181b;
    margin: 0;
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: #ffffff;
    max-width: 600px;
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    padding: 2.5rem;
}

header {
    text-align: center;
    border-bottom: 1px solid #e4e4e7;
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
}

h1 {
    font-size: 1.875rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    color: #111827;
}

.subtitle {
    color: #52525b;
    font-size: 1rem;
    margin: 0;
}

.card {
    background-color: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 1.5rem;
}

h2 {
    margin-top: 0;
    font-size: 1.25rem;
    color: #374151;
}

ul {
    padding-left: 1.5rem;
    color: #4b5563;
    line-height: 1.6;
}

li {
    margin-bottom: 0.5rem;
}

code {
    background-color: #f3f4f6;
    color: #ef4444;
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.875em;
}

footer {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.875rem;
    color: #9ca3af;
}

footer a {
    color: #3b82f6;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}