:root {
    --bg-color: #fafafa;
    --text-color: #333;
    --accent-color: #2563eb;
    --code-bg: #f1f5f9;
    --border-color: #e2e8f0;
}
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: 2rem 1rem;
}
.container {
    max-width: 800px;
    margin: 0 auto;
}
h1, h2, h3 {
    color: #111;
    margin-top: 2rem;
}
h1 {
    font-size: 2.5rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-top: 0;
}
h2 {
    font-size: 1.75rem;
    margin-top: 2.5rem;
}
h3 {
    font-size: 1.25rem;
}
p {
    margin-bottom: 1rem;
}
a {
    color: var(--accent-color);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
ul {
    padding-left: 1.5rem;
}
li {
    margin-bottom: 0.5rem;
}
video {
    width: 100%;
    max-width: 100%;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin: 1rem 0;
}
img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin: 1rem 0;
}
pre {
    background-color: var(--code-bg);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    border: 1px solid var(--border-color);
}
code {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 0.9em;
}