/* grimoire theme: Nordic (nordic) */
:root {
    --gr-font-body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --gr-font-heading: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --gr-font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo, Consolas, "Liberation Mono", monospace;
    --gr-radius: 6px;
    --gr-content-w: 780px;
    --gr-sidebar-w: 302px;
    --gr-toc-w: 232px;
    --gr-topbar-h: 54px;
    --gr-shell-w: 1720px;
    --gr-bg: #fbfcfd;
    --gr-surface: #eff3f7;
    --gr-surface-alt: #e3eaf1;
    --gr-border: #d3dde7;
    --gr-text: #3b4252;
    --gr-muted: #6b7688;
    --gr-heading: #2e3440;
    --gr-accent: #5e81ac;
    --gr-accent-hover: #4c6d94;
    --gr-on-accent: #ffffff;
    --gr-code-text: #3b4252;
    --gr-code-bg: #edf1f5;
    --gr-selection: rgba(94, 129, 172, 0.18);
    --gr-shadow: rgba(46, 52, 64, 0.14);
    --gr-syn-comment: #9aa0a6;
    --gr-syn-keyword: #a626a4;
    --gr-syn-type: #0184bc;
    --gr-syn-literal: #986801;
    --gr-syn-string: #50a14f;
    --gr-syn-number: #986801;
    --gr-syn-variable: #e45649;
    --gr-syn-symbol: #b26a00;
    --gr-syn-builtin: #c18401;
    --gr-syn-title: #4078f2;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --gr-bg: #2e3440;
        --gr-surface: #343b48;
        --gr-surface-alt: #3b4252;
        --gr-border: #4c566a;
        --gr-text: #d8dee9;
        --gr-muted: #93a1b5;
        --gr-heading: #eceff4;
        --gr-accent: #88c0d0;
        --gr-accent-hover: #a3d4e2;
        --gr-on-accent: #22303c;
        --gr-code-text: #d8dee9;
        --gr-code-bg: #313846;
        --gr-selection: rgba(136, 192, 208, 0.22);
        --gr-shadow: rgba(0, 0, 0, 0.55);
    }
}

:root[data-theme="dark"] {
    --gr-bg: #2e3440;
    --gr-surface: #343b48;
    --gr-surface-alt: #3b4252;
    --gr-border: #4c566a;
    --gr-text: #d8dee9;
    --gr-muted: #93a1b5;
    --gr-heading: #eceff4;
    --gr-accent: #88c0d0;
    --gr-accent-hover: #a3d4e2;
    --gr-on-accent: #22303c;
    --gr-code-text: #d8dee9;
    --gr-code-bg: #313846;
    --gr-selection: rgba(136, 192, 208, 0.22);
    --gr-shadow: rgba(0, 0, 0, 0.55);
    --gr-syn-comment: #7f848e;
    --gr-syn-keyword: #c678dd;
    --gr-syn-type: #56b6c2;
    --gr-syn-literal: #d19a66;
    --gr-syn-string: #98c379;
    --gr-syn-number: #d19a66;
    --gr-syn-variable: #e06c75;
    --gr-syn-symbol: #e5c07b;
    --gr-syn-builtin: #e5c07b;
    --gr-syn-title: #61afef;
}

:root[data-theme="light"] {
    --gr-bg: #fbfcfd;
    --gr-surface: #eff3f7;
    --gr-surface-alt: #e3eaf1;
    --gr-border: #d3dde7;
    --gr-text: #3b4252;
    --gr-muted: #6b7688;
    --gr-heading: #2e3440;
    --gr-accent: #5e81ac;
    --gr-accent-hover: #4c6d94;
    --gr-on-accent: #ffffff;
    --gr-code-text: #3b4252;
    --gr-code-bg: #edf1f5;
    --gr-selection: rgba(94, 129, 172, 0.18);
    --gr-shadow: rgba(46, 52, 64, 0.14);
    --gr-syn-comment: #9aa0a6;
    --gr-syn-keyword: #a626a4;
    --gr-syn-type: #0184bc;
    --gr-syn-literal: #986801;
    --gr-syn-string: #50a14f;
    --gr-syn-number: #986801;
    --gr-syn-variable: #e45649;
    --gr-syn-symbol: #b26a00;
    --gr-syn-builtin: #c18401;
    --gr-syn-title: #4078f2;
}

*, *::before, *::after { box-sizing: border-box; }

html {
    color-scheme: light;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

html[data-theme="dark"] { color-scheme: dark; }

body {
    margin: 0;
    background: var(--gr-bg);
    color: var(--gr-text);
    font-family: var(--gr-font-body);
    font-size: 16px;
    line-height: 1.7;
    font-synthesis-weight: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

::selection { background: var(--gr-selection); }

:focus-visible {
    outline: 2px solid var(--gr-accent);
    outline-offset: 2px;
    border-radius: 3px;
}

a { color: var(--gr-accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--gr-accent-hover); }

.gr-skip {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 100;
    padding: 10px 16px;
    background: var(--gr-accent);
    color: var(--gr-on-accent);
    border-radius: 0 0 var(--gr-radius) 0;
    text-decoration: none;
}
.gr-skip:focus { left: 0; }

/* ---------- top bar ---------- */

.gr-topbar {
    position: sticky;
    top: 0;
    z-index: 40;
    display: flex;
    align-items: center;
    gap: 10px;
    height: var(--gr-topbar-h);
    padding: 0 16px;
    background: color-mix(in srgb, var(--gr-bg) 88%, transparent);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--gr-border);
}

.gr-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--gr-font-heading);
    font-weight: 650;
    font-size: 1.02rem;
    letter-spacing: -0.01em;
    color: var(--gr-heading);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.gr-mark {
    flex: none;
    width: 26px;
    height: 26px;
    display: grid;
    place-items: center;
    border-radius: 7px;
    background: var(--gr-accent);
    color: var(--gr-on-accent);
    font-family: var(--gr-font-heading);
    font-size: 0.86rem;
    font-weight: 700;
}

/* A configured logo replaces the default glyph: no accent tile behind it, and a
   generous width so a wordmark fits as comfortably as a square icon. */
.gr-mark[data-logo="true"] {
    width: auto;
    max-width: 180px;
    background: none;
    border-radius: 0;
    color: inherit;
}
.gr-mark[data-logo="true"] svg,
.gr-mark[data-logo="true"] img {
    display: block;
    width: auto;
    height: 28px;
    max-width: 180px;
}

.gr-spacer { flex: 1 1 auto; }

.gr-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 34px;
    padding: 0 10px;
    border: 1px solid var(--gr-border);
    border-radius: var(--gr-radius);
    background: var(--gr-surface);
    color: var(--gr-muted);
    font: inherit;
    font-size: 0.85rem;
    cursor: pointer;
    text-decoration: none;
    transition: color 120ms ease, border-color 120ms ease, background 120ms ease;
}
.gr-btn:hover { color: var(--gr-text); border-color: var(--gr-accent); }
.gr-btn svg { width: 16px; height: 16px; flex: none; }

.gr-icon-btn { width: 34px; padding: 0; }

.gr-searchbtn { min-width: 190px; justify-content: flex-start; }
.gr-searchbtn .gr-kbd { margin-left: auto; }

.gr-kbd {
    font-family: var(--gr-font-mono);
    font-size: 0.72rem;
    padding: 1px 6px;
    border: 1px solid var(--gr-border);
    border-bottom-width: 2px;
    border-radius: 5px;
    color: var(--gr-muted);
    background: var(--gr-bg);
}

/* ---------- colour-mode selector ---------- */

.gr-modes {
    display: inline-flex;
    padding: 2px;
    gap: 2px;
    border: 1px solid var(--gr-border);
    border-radius: calc(var(--gr-radius) + 2px);
    background: var(--gr-surface);
}

.gr-modes button {
    display: grid;
    place-items: center;
    width: 30px;
    height: 28px;
    border: 0;
    border-radius: var(--gr-radius);
    background: transparent;
    color: var(--gr-muted);
    cursor: pointer;
    transition: background 120ms ease, color 120ms ease;
}
.gr-modes button:hover { color: var(--gr-text); }
.gr-modes button svg { width: 15px; height: 15px; }
.gr-modes button[aria-checked="true"] {
    background: var(--gr-accent);
    color: var(--gr-on-accent);
}

/* ---------- shell ---------- */

.gr-shell {
    display: grid;
    grid-template-columns: 1fr;
    align-items: start;
    max-width: var(--gr-shell-w);
    margin: 0 auto;
}

.gr-sidebar {
    position: fixed;
    inset: var(--gr-topbar-h) auto 0 0;
    z-index: 35;
    width: var(--gr-sidebar-w);
    max-width: 86vw;
    padding: 18px 8px 40px 16px;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: var(--gr-surface);
    border-right: 1px solid var(--gr-border);
    transform: translateX(-102%);
    transition: transform 180ms ease;
}
.gr-sidebar[data-open="true"] { transform: none; box-shadow: 0 12px 40px var(--gr-shadow); }

.gr-backdrop {
    position: fixed;
    inset: 0;
    z-index: 34;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease;
}
.gr-backdrop[data-open="true"] { opacity: 1; pointer-events: auto; }

.gr-nav ol { list-style: none; margin: 0; padding: 0; }
.gr-nav > ol { padding-right: 6px; }

.gr-part {
    margin: 22px 0 8px;
    padding: 0 10px;
    font-family: var(--gr-font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--gr-muted);
}
.gr-part:first-child { margin-top: 4px; }

.gr-sep { margin: 12px 10px; border: 0; border-top: 1px solid var(--gr-border); }

.gr-nav a, .gr-nav .gr-draft {
    display: flex;
    gap: 8px;
    padding: 5px 10px;
    border-radius: var(--gr-radius);
    color: var(--gr-text);
    text-decoration: none;
    font-size: 0.895rem;
    line-height: 1.45;
}
.gr-nav a:hover { background: var(--gr-surface-alt); color: var(--gr-text); }
.gr-nav .gr-draft { color: var(--gr-muted); cursor: not-allowed; }

.gr-nav a[aria-current="page"] {
    background: color-mix(in srgb, var(--gr-accent) 14%, transparent);
    color: var(--gr-accent);
    font-weight: 600;
    box-shadow: inset 2px 0 0 var(--gr-accent);
}

.gr-num {
    flex: none;
    min-width: 1.9em;
    color: var(--gr-muted);
    font-variant-numeric: tabular-nums;
    font-size: 0.82rem;
    padding-top: 0.08em;
}
.gr-nav a[aria-current="page"] .gr-num { color: inherit; }

.gr-nav li[data-level="1"] > a, .gr-nav li[data-level="1"] > .gr-draft { padding-left: 26px; }
.gr-nav li[data-level="2"] > a, .gr-nav li[data-level="2"] > .gr-draft { padding-left: 42px; }
.gr-nav li[data-level="3"] > a, .gr-nav li[data-level="3"] > .gr-draft { padding-left: 58px; }

/* ---------- main column ---------- */

.gr-main { min-width: 0; padding: 8px 20px 64px; }

.gr-content {
    max-width: var(--gr-content-w);
    margin: 0 auto;
}

.gr-breadcrumb {
    margin: 18px 0 0;
    font-size: 0.8rem;
    color: var(--gr-muted);
}
.gr-breadcrumb a { color: inherit; text-decoration: none; }
.gr-breadcrumb a:hover { color: var(--gr-accent); }

.gr-content h1, .gr-content h2, .gr-content h3,
.gr-content h4, .gr-content h5, .gr-content h6 {
    font-family: var(--gr-font-heading);
    color: var(--gr-heading);
    line-height: 1.25;
    letter-spacing: -0.015em;
    scroll-margin-top: calc(var(--gr-topbar-h) + 16px);
    position: relative;
}

.gr-content h1 { font-size: 2.05rem; margin: 24px 0 18px; font-weight: 700; }
.gr-content h2 {
    font-size: 1.45rem;
    margin: 44px 0 14px;
    padding-bottom: 7px;
    border-bottom: 1px solid var(--gr-border);
    font-weight: 650;
}
.gr-content h3 { font-size: 1.16rem; margin: 32px 0 10px; font-weight: 650; }
.gr-content h4 { font-size: 1rem; margin: 26px 0 8px; font-weight: 650; }
.gr-content h5, .gr-content h6 {
    font-size: 0.9rem;
    margin: 22px 0 6px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--gr-muted);
}

.gr-anchor {
    position: absolute;
    left: -0.85em;
    width: 0.85em;
    opacity: 0;
    color: var(--gr-muted);
    text-decoration: none;
    font-weight: 400;
    transition: opacity 120ms ease;
}
.gr-content h1:hover .gr-anchor, .gr-content h2:hover .gr-anchor,
.gr-content h3:hover .gr-anchor, .gr-content h4:hover .gr-anchor,
.gr-content h5:hover .gr-anchor, .gr-content h6:hover .gr-anchor,
.gr-anchor:focus { opacity: 1; }
.gr-anchor:hover { color: var(--gr-accent); }

.gr-content p { margin: 0 0 16px; }
.gr-content ul, .gr-content ol { margin: 0 0 16px; padding-left: 1.5em; }
.gr-content li { margin: 4px 0; }
.gr-content li > ul, .gr-content li > ol { margin: 4px 0 0; }

.gr-content img { max-width: 100%; height: auto; border-radius: var(--gr-radius); }

.gr-content hr {
    margin: 34px 0;
    border: 0;
    border-top: 1px solid var(--gr-border);
}

.gr-content blockquote {
    margin: 0 0 18px;
    padding: 2px 0 2px 18px;
    border-left: 3px solid var(--gr-accent);
    color: var(--gr-muted);
}
.gr-content blockquote > :last-child { margin-bottom: 0; }

.gr-content code {
    font-family: var(--gr-font-mono);
    font-size: 0.875em;
    background: var(--gr-code-bg);
    color: var(--gr-code-text);
    padding: 0.15em 0.38em;
    border-radius: 5px;
    overflow-wrap: break-word;
}

.gr-codeblock {
    position: relative;
    margin: 0 0 20px;
    border: 1px solid var(--gr-border);
    border-radius: calc(var(--gr-radius) + 2px);
    background: var(--gr-code-bg);
    overflow: hidden;
}

.gr-codeblock pre {
    margin: 0;
    padding: 14px 16px;
    overflow-x: auto;
    font-size: 0.855rem;
    line-height: 1.6;
    tab-size: 4;
}
.gr-codeblock pre code {
    background: none;
    padding: 0;
    border-radius: 0;
    font-size: inherit;
}

/* A highlight.js stylesheet paints its own background and padding on `.hljs`,
   which would sit as a mismatched slab inside the themed block. Let the theme
   own the frame and let highlight.js own only the token colours. */
.gr-codeblock pre code.hljs {
    background: none;
    padding: 0;
}

/* Token colours for the built-in highlighter. These use highlight.js class
   names, so a highlight.js stylesheet loaded from a CDN - which is appended to
   the head at runtime, after this file - simply overrides them. */
.hljs-comment, .hljs-quote { color: var(--gr-syn-comment); font-style: italic; }
.hljs-keyword, .hljs-selector-tag { color: var(--gr-syn-keyword); }
.hljs-type, .hljs-class .hljs-title { color: var(--gr-syn-type); }
.hljs-literal, .hljs-boolean { color: var(--gr-syn-literal); }
.hljs-string, .hljs-subst { color: var(--gr-syn-string); }
.hljs-number { color: var(--gr-syn-number); }
.hljs-variable, .hljs-template-variable { color: var(--gr-syn-variable); }
.hljs-symbol, .hljs-attr { color: var(--gr-syn-symbol); }
.hljs-built_in, .hljs-builtin-name { color: var(--gr-syn-builtin); }
.hljs-title, .hljs-section, .hljs-function .hljs-title { color: var(--gr-syn-title); }
.hljs-meta { color: var(--gr-syn-comment); }
.hljs-emphasis { font-style: italic; }
.hljs-strong { font-weight: 600; }

.gr-lang {
    position: absolute;
    top: 0;
    right: 0;
    padding: 3px 9px;
    border-left: 1px solid var(--gr-border);
    border-bottom: 1px solid var(--gr-border);
    border-radius: 0 calc(var(--gr-radius) + 1px) 0 6px;
    background: var(--gr-surface);
    color: var(--gr-muted);
    font-family: var(--gr-font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    pointer-events: none;
}

.gr-copy {
    position: absolute;
    top: 6px;
    right: 8px;
    display: grid;
    place-items: center;
    width: 30px;
    height: 28px;
    border: 1px solid var(--gr-border);
    border-radius: var(--gr-radius);
    background: var(--gr-surface);
    color: var(--gr-muted);
    cursor: pointer;
    opacity: 0;
    transition: opacity 120ms ease, color 120ms ease;
}
.gr-codeblock:hover .gr-copy, .gr-copy:focus { opacity: 1; }
.gr-copy:hover { color: var(--gr-accent); }
.gr-copy svg { width: 15px; height: 15px; }
.gr-copy[data-copied="true"] { color: var(--gr-accent); opacity: 1; }
.gr-codeblock:hover .gr-lang { opacity: 0; }

.gr-tablewrap { overflow-x: auto; margin: 0 0 20px; }

.gr-content table {
    border-collapse: collapse;
    width: 100%;
    font-size: 0.9rem;
}
.gr-content th, .gr-content td {
    padding: 8px 12px;
    border: 1px solid var(--gr-border);
    text-align: left;
    vertical-align: top;
}
.gr-content th {
    background: var(--gr-surface-alt);
    font-family: var(--gr-font-heading);
    font-weight: 650;
    color: var(--gr-heading);
}
.gr-content tbody tr:nth-child(even) { background: var(--gr-surface); }
.gr-content td[data-align="right"], .gr-content th[data-align="right"] { text-align: right; }
.gr-content td[data-align="center"], .gr-content th[data-align="center"] { text-align: center; }

/* ---------- pager and footer ---------- */

.gr-pager {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    max-width: var(--gr-content-w);
    margin: 46px auto 0;
}

.gr-pager a {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 12px 16px;
    border: 1px solid var(--gr-border);
    border-radius: calc(var(--gr-radius) + 2px);
    background: var(--gr-surface);
    text-decoration: none;
    transition: border-color 120ms ease, transform 120ms ease;
}
.gr-pager a:hover { border-color: var(--gr-accent); transform: translateY(-1px); }
.gr-pager .gr-next { text-align: right; grid-column: 2; }
.gr-pager .gr-dir {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--gr-muted);
}
.gr-pager .gr-title { color: var(--gr-heading); font-weight: 600; }

.gr-footer {
    max-width: var(--gr-content-w);
    margin: 40px auto 0;
    padding-top: 18px;
    border-top: 1px solid var(--gr-border);
    display: flex;
    flex-wrap: wrap;
    gap: 6px 18px;
    align-items: baseline;
    font-size: 0.8rem;
    color: var(--gr-muted);
}
.gr-footer a { color: var(--gr-muted); }
.gr-footer a:hover { color: var(--gr-accent); }

/* ---------- on-this-page ---------- */

.gr-toc { display: none; }

/* The column has to span the whole grid row, not just its own content: a sticky
   child can only travel inside the box of its parent, so a column that ends where
   the list ends takes the list off-screen with it a few hundred pixels down the
   page. See align-self on .gr-toc below, which overrides the align-items: start
   that the shell sets for the main column. */
.gr-toc-inner {
    position: sticky;
    top: calc(var(--gr-topbar-h) + 18px);
    max-height: calc(100vh - var(--gr-topbar-h) - 40px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 22px 16px 30px 0;
}

.gr-toc h2 {
    margin: 0 0 10px;
    font-family: var(--gr-font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--gr-muted);
}

.gr-toc ol { list-style: none; margin: 0; padding: 0; }
.gr-toc a {
    display: block;
    padding: 3px 10px;
    border-left: 2px solid var(--gr-border);
    color: var(--gr-muted);
    font-size: 0.82rem;
    line-height: 1.5;
    text-decoration: none;
}
.gr-toc a:hover { color: var(--gr-text); }
.gr-toc a[aria-current="true"] {
    color: var(--gr-accent);
    border-left-color: var(--gr-accent);
    font-weight: 550;
}
.gr-toc li[data-level="3"] a { padding-left: 22px; }
.gr-toc li[data-level="4"] a { padding-left: 34px; }
.gr-toc li[data-level="5"] a, .gr-toc li[data-level="6"] a { padding-left: 46px; }

/* ---------- search ---------- */

.gr-search[hidden] { display: none; }

.gr-search {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: flex;
    justify-content: center;
    padding: 10vh 16px 16px;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(3px);
}

.gr-search-panel {
    display: flex;
    flex-direction: column;
    width: min(680px, 100%);
    max-height: 76vh;
    border: 1px solid var(--gr-border);
    border-radius: calc(var(--gr-radius) + 6px);
    background: var(--gr-bg);
    box-shadow: 0 24px 70px var(--gr-shadow);
    overflow: hidden;
}

.gr-search-head {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-bottom: 1px solid var(--gr-border);
    color: var(--gr-muted);
}
.gr-search-head svg { width: 18px; height: 18px; flex: none; }

.gr-search-head input {
    flex: 1;
    border: 0;
    background: none;
    color: var(--gr-text);
    font: inherit;
    font-size: 1rem;
    outline: none;
}

.gr-results { list-style: none; margin: 0; padding: 6px; overflow-y: auto; }

.gr-results a {
    display: flex;
    flex-direction: column;
    gap: 1px;
    padding: 9px 12px;
    border-radius: var(--gr-radius);
    text-decoration: none;
    color: var(--gr-text);
}
.gr-results li[data-active="true"] a, .gr-results a:hover { background: var(--gr-surface-alt); }

.gr-r-crumb {
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gr-muted);
}
.gr-r-title {
    font-family: var(--gr-font-heading);
    font-weight: 600;
    color: var(--gr-heading);
    line-height: 1.35;
}
/* Two lines of context is enough to judge a hit; more and the list stops being
   scannable. The clamp degrades to a plain overflow where it is unsupported. */
.gr-r-body {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-size: 0.8rem;
    line-height: 1.5;
    color: var(--gr-muted);
}
.gr-results mark {
    background: color-mix(in srgb, var(--gr-accent) 26%, transparent);
    color: inherit;
    border-radius: 3px;
    padding: 0 1px;
}

.gr-search-foot {
    display: flex;
    gap: 14px;
    padding: 8px 14px;
    border-top: 1px solid var(--gr-border);
    background: var(--gr-surface);
    font-size: 0.74rem;
    color: var(--gr-muted);
}
.gr-empty { padding: 26px 14px; text-align: center; color: var(--gr-muted); font-size: 0.9rem; }

/* ---------- responsive ---------- */

@media (min-width: 1080px) {
    .gr-shell { grid-template-columns: var(--gr-sidebar-w) minmax(0, 1fr); }
    .gr-sidebar {
        position: sticky;
        top: var(--gr-topbar-h);
        height: calc(100vh - var(--gr-topbar-h));
        transform: none;
    }
    .gr-sidebar[data-open="true"] { box-shadow: none; }
    .gr-backdrop { display: none; }
    #gr-menu { display: none; }
    .gr-main { padding-left: 34px; padding-right: 34px; }
}

@media (min-width: 1400px) {
    .gr-shell { grid-template-columns: var(--gr-sidebar-w) minmax(0, 1fr) var(--gr-toc-w); }
    .gr-toc { display: block; align-self: stretch; }
}

@media (max-width: 640px) {
    .gr-searchbtn { min-width: 0; }
    .gr-searchbtn span, .gr-searchbtn .gr-kbd { display: none; }
    .gr-searchbtn { width: 34px; padding: 0; }
    .gr-pager { grid-template-columns: 1fr; }
    .gr-pager .gr-next { grid-column: 1; }
    .gr-content h1 { font-size: 1.7rem; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

@media print {
    .gr-topbar, .gr-sidebar, .gr-toc, .gr-pager,
    .gr-backdrop, .gr-search, .gr-copy, .gr-skip { display: none !important; }
    .gr-shell { display: block; max-width: none; }
    .gr-main { padding: 0; }
    .gr-content { max-width: none; }
    body { background: #fff; color: #000; }
    .gr-codeblock, .gr-content table { break-inside: avoid; }
}