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

:root {
    --primary: #1a73e8;
    --dark: #202124;
    --light: #f8f9fa;
    --border: #dadce0;
    --text: #202124;
}

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

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    padding: 40px 0 20px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 30px;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    color: var(--primary);
}

header .subtitle {
    font-size: 1.1em;
    color: #5f6368;
}

nav {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

nav a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

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

main {
    margin: 30px 0;
}

section {
    margin-bottom: 50px;
}

h2 {
    font-size: 1.8em;
    margin-bottom: 20px;
    color: var(--text);
    padding-top: 20px;
}

h3 {
    font-size: 1.3em;
    margin-top: 25px;
    margin-bottom: 15px;
    color: var(--text);
}

p {
    margin-bottom: 15px;
    line-height: 1.8;
}

ul, ol {
    margin-left: 30px;
    margin-bottom: 15px;
}

li {
    margin-bottom: 10px;
    line-height: 1.8;
}

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

a:hover {
    text-decoration: underline;
}

pre {
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 15px;
    overflow-x: auto;
    margin: 15px 0;
    font-family: "Monaco", "Courier New", monospace;
    font-size: 0.9em;
}

code {
    background: var(--light);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: "Monaco", "Courier New", monospace;
    font-size: 0.9em;
}

pre code {
    background: none;
    padding: 0;
}

footer {
    border-top: 1px solid var(--border);
    padding: 40px 0;
    margin-top: 50px;
    text-align: center;
    color: #5f6368;
    font-size: 0.9em;
}

footer p {
    margin-bottom: 10px;
}

@media (max-width: 600px) {
    header h1 {
        font-size: 1.8em;
    }

    nav {
        flex-wrap: wrap;
        gap: 10px;
    }

    h2 {
        font-size: 1.4em;
    }

    h3 {
        font-size: 1.1em;
    }

    .container {
        padding: 0 15px;
    }
}