@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;600&display=swap');

:root {
    --accent: #008255;
    --bg: #f5f7f6;
    --card-bg: #ffffff;
    --text: #333;
    --muted: #666;
    --border: #e5e7eb;
}

body {
    font-size: 18px;
    font-weight: 300;
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--bg);
    color: var(--text);
}

.container {
    max-width: 800px;
    margin: 30px auto;
    padding: 28px;
    background: var(--card-bg);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

h1, h2, h3 {
    font-family: 'Roboto', sans-serif;
    color: #222;
}

h1 {
    font-size: 36px;
    text-align: center;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 28px;
    font-weight: 600;
    letter-spacing: -0.015em;
}

h3 {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

ul {
    list-style: disc;
    margin-left: 20px;
}

li {
    margin-bottom: 6px;
}

a {
    color: var(--accent);
    text-decoration: underline;
    transition: opacity 0.2s ease;
}

a:hover {
    opacity: 0.75;
}

strong,
b {
    font-weight: 300;
    color: var(--accent);
}

.table-of-contents {
    margin-bottom: 20px;
    padding: 16px 18px;
    background: linear-gradient(
        0deg,
        rgba(0, 130, 85, 0.05),
        rgba(0, 130, 85, 0.05)
    ), #f9fbfa;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.table-of-contents h2 {
    color: var(--accent);
}

.last-modified {
    text-align: center;
    margin-top: 10px;
    font-style: italic;
    color: var(--muted);
}

.container p {
    margin: 0.8em 0;
}

@media (max-width: 600px) {
    .container {
        margin: 20px;
        padding: 20px;
    }
}