:root {
    --mg-bg: #fbfaf7;
    --mg-surface: #ffffff;
    --mg-surface-soft: #f3f0ea;

    --mg-text: #1f2933;
    --mg-muted: #667085;
    --mg-muted-soft: #8a94a6;

    --mg-primary: #2563eb;
    --mg-primary-soft: #e8efff;
    --mg-accent: #111827;

    --mg-border: #e4e7ec;
    --mg-border-strong: #d0d5dd;

    --mg-code-bg: #f7f8fa;

    --mg-radius: 12px;

    --mg-container: 1180px;
    --mg-font: Inter, Arial, Helvetica, sans-serif;
    --mg-font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--mg-bg);
    color: var(--mg-text);
    font-family: var(--mg-font);
    line-height: 1.75;
    text-rendering: optimizeLegibility;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
}

.mg-site {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.mg-main {
    flex: 1;
}

.mg-container {
    width: min(var(--mg-container), calc(100% - 48px));
    margin: 0 auto;
}

/* Topbar */

.mg-topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(251, 250, 247, 0.92);
    border-bottom: 1px solid var(--mg-border);
    backdrop-filter: blur(14px);
}

.mg-topbar-inner {
    min-height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.mg-brand,
.mg-footer-brand {
    color: var(--mg-text);
    font-size: 15px;
    font-weight: 850;
    letter-spacing: -0.025em;
}

.mg-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    color: var(--mg-muted);
    font-size: 14px;
    font-weight: 650;
}

.mg-nav a:hover {
    color: var(--mg-primary);
}

/* Main docs layout */

.mg-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 780px);
    gap: 72px;
    align-items: start;
    padding: 72px 0 92px;
}

.mg-sidebar {
    position: sticky;
    top: 96px;
}

.mg-sidebar-inner {
    border-right: 1px solid var(--mg-border);
    padding-right: 26px;
}

.mg-sidebar-label {
    margin: 0 0 18px;
    color: var(--mg-primary);
    font-size: 12px;
    font-weight: 850;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.mg-sidebar-nav {
    display: grid;
    gap: 2px;
}

.mg-sidebar-nav a {
    display: block;
    padding: 8px 0;
    color: var(--mg-muted);
    font-size: 14px;
    line-height: 1.45;
}

.mg-sidebar-nav a:hover {
    color: var(--mg-primary);
}

.mg-sidebar-note {
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid var(--mg-border);
}

.mg-sidebar-note p {
    margin: 0;
    color: var(--mg-muted);
    font-size: 14px;
    line-height: 1.65;
}

.mg-document {
    min-width: 0;
}

/* Document header */

.mg-doc-header {
    padding-bottom: 38px;
    border-bottom: 1px solid var(--mg-border);
}

.mg-label {
    margin: 0 0 14px;
    color: var(--mg-primary);
    font-size: 12px;
    font-weight: 850;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.mg-doc-header h1 {
    max-width: 760px;
    margin: 0;
    color: var(--mg-text);
    font-size: clamp(42px, 6vw, 68px);
    line-height: 1.04;
    letter-spacing: -0.065em;
}

.mg-lead {
    max-width: 720px;
    margin: 22px 0 0;
    color: var(--mg-muted);
    font-size: 19px;
    line-height: 1.75;
}

.mg-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
    color: var(--mg-muted-soft);
    font-size: 13px;
    font-weight: 650;
}

/* TOC */

.mg-toc-panel {
    padding: 34px 0 18px;
    border-bottom: 1px solid var(--mg-border);
}

.mg-toc-panel h2,
.mg-section-head h2 {
    margin: 0 0 20px;
    color: var(--mg-text);
    font-size: 26px;
    line-height: 1.25;
    letter-spacing: -0.035em;
}

.mg-toc-list,
.mg-resource-list {
    padding: 0;
    margin: 0;
    list-style: none;
}

.mg-toc-list li,
.mg-resource-list li {
    border-top: 1px solid var(--mg-border);
}

.mg-toc-list a,
.mg-resource-list a {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 18px;
    padding: 18px 0;
}

.mg-toc-list span,
.mg-resource-list span,
.mg-chapter-kicker {
    color: var(--mg-muted-soft);
    font-family: var(--mg-font-mono);
    font-size: 13px;
    font-weight: 800;
}

.mg-toc-list strong,
.mg-resource-list strong {
    display: block;
    color: var(--mg-text);
    font-size: 17px;
    line-height: 1.45;
}

.mg-resource-list p {
    margin: 7px 0 0;
    color: var(--mg-muted);
    font-size: 15px;
    line-height: 1.65;
}

.mg-resource-list small {
    display: inline-block;
    margin-top: 8px;
    color: var(--mg-muted-soft);
    font-size: 13px;
}

.mg-inline-toc {
    display: grid;
    gap: 0;
    padding: 28px 0;
    border-bottom: 1px solid var(--mg-border);
}

.mg-inline-toc a {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 16px;
    padding: 8px 0;
    color: var(--mg-muted);
    font-size: 15px;
}

.mg-inline-toc a:hover {
    color: var(--mg-primary);
}

.mg-inline-toc span {
    color: var(--mg-muted-soft);
    font-family: var(--mg-font-mono);
    font-size: 13px;
    font-weight: 800;
}

/* Chapters */

.mg-chapter-stream {
    padding-top: 10px;
}

.mg-chapter {
    padding: 38px 0;
    border-bottom: 1px solid var(--mg-border);
}

.mg-chapter-kicker {
    margin: 0 0 14px;
}

.mg-chapter h2 {
    max-width: 720px;
    margin: 0 0 18px;
    color: var(--mg-text);
    font-size: clamp(28px, 4vw, 38px);
    line-height: 1.18;
    letter-spacing: -0.045em;
}

.mg-chapter p {
    max-width: 720px;
    margin: 0 0 18px;
    color: var(--mg-muted);
    font-size: 17px;
    line-height: 1.85;
}

.mg-chapter p:last-child {
    margin-bottom: 0;
}

/* Resources */

.mg-resources,
.mg-faq {
    padding-top: 54px;
}

.mg-section-head {
    margin-bottom: 12px;
}

/* FAQ */

.mg-question-list {
    border-top: 1px solid var(--mg-border);
}

.mg-question {
    padding: 18px 0;
    border-bottom: 1px solid var(--mg-border);
}

.mg-question summary {
    cursor: pointer;
    color: var(--mg-text);
    font-size: 17px;
    font-weight: 750;
    line-height: 1.55;
    list-style: none;
}

.mg-question summary::-webkit-details-marker {
    display: none;
}

.mg-question summary::after {
    content: "+";
    float: right;
    color: var(--mg-primary);
    font-family: var(--mg-font-mono);
    font-weight: 800;
}

.mg-question[open] summary::after {
    content: "–";
}

.mg-question p {
    max-width: 700px;
    margin: 14px 0 0;
    color: var(--mg-muted);
    font-size: 16px;
    line-height: 1.8;
}

/* Article image */

.mg-figure {
    margin: 34px 0 6px;
}

.mg-figure img {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 8;
    object-fit: cover;
    border-radius: var(--mg-radius);
    border: 1px solid var(--mg-border);
    background: var(--mg-surface-soft);
}

/* Footer */

.mg-footer {
    border-top: 1px solid var(--mg-border);
    background: var(--mg-surface);
}

.mg-footer-inner {
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.mg-footer p {
    margin: 8px 0 0;
    color: var(--mg-muted);
    font-size: 14px;
}

.mg-footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 16px;
    color: var(--mg-muted);
    font-size: 14px;
    font-weight: 650;
}

.mg-footer-links a:hover {
    color: var(--mg-primary);
}

/* Responsive */

@media (max-width: 980px) {
    .mg-layout {
        grid-template-columns: 1fr;
        gap: 34px;
        padding: 48px 0 72px;
    }

    .mg-sidebar {
        position: static;
        border-bottom: 1px solid var(--mg-border);
        padding-bottom: 20px;
    }

    .mg-sidebar-inner {
        border-right: 0;
        padding-right: 0;
    }

    .mg-sidebar-nav {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
    }

    .mg-sidebar-nav a {
        padding: 8px 10px;
        border: 1px solid var(--mg-border);
        border-radius: 999px;
        background: var(--mg-surface);
    }

    .mg-sidebar-note {
        display: none;
    }
}

@media (max-width: 680px) {
    .mg-container {
        width: min(var(--mg-container), calc(100% - 28px));
    }

    .mg-topbar-inner,
    .mg-footer-inner {
        display: grid;
        gap: 16px;
        padding: 16px 0;
    }

    .mg-nav,
    .mg-footer-links {
        justify-content: flex-start;
        gap: 12px;
    }

    .mg-doc-header h1 {
        font-size: clamp(36px, 12vw, 50px);
        letter-spacing: -0.05em;
    }

    .mg-lead {
        font-size: 17px;
    }

    .mg-toc-list a,
    .mg-resource-list a,
    .mg-inline-toc a {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .mg-chapter {
        padding: 30px 0;
    }

    .mg-chapter h2 {
        font-size: 28px;
    }

    .mg-figure img {
        aspect-ratio: 16 / 10;
    }
}