:root {
    --primary-color: #1a73e8;
    --text-color: #3c4043;
    --heading-color: #202124;
    --bg-color: #f8f9fa;
    --container-bg: #ffffff;
    --border-color: #dadce0;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    padding: 2rem 1rem;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--container-bg);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
}

header {
    border-bottom: 2px solid var(--primary-color);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
}

h1 {
    color: var(--heading-color);
    font-size: 2.25rem;
    margin-bottom: 0.5rem;
}

h2 {
    color: var(--heading-color);
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
}

ul {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
}

.last-updated {
    font-style: italic;
    color: #70757a;
    font-size: 0.9rem;
}

footer {
    margin-top: 3rem;
    text-align: center;
    font-size: 0.9rem;
    color: #70757a;
}

.placeholder {
    background-color: #fff3cd;
    border-bottom: 1px dashed #856404;
    padding: 2px 4px;
    font-weight: bold;
}

@media (max-width: 600px) {
    .container {
        padding: 1.5rem;
    }
    
    h1 {
        font-size: 1.75rem;
    }
}