/* Flurfunk project website: base, header, docs pages, footer.
   Plain CSS, no build step. The home page adds home.css. */

/* ---------- Tokens ----------
   Light is the default look. Dark applies only when the visitor picks it
   with the toggle (remembered in localStorage).
   Warm palette around the brand yellow: honey, brown accent, espresso.
   The dark values sit on :root; the light ones override them by default. */
:root {
  color-scheme: dark;

  --yellow: #ffc93c;
  --honey: #e0a526;
  --brown: #8b5a1b;
  --espresso: #231b12;
  --ink: #1d1d1f;
  --paper: #f7f2ea;
  --amber: #e0a526;

  --bg: #15120e;
  --bg-band: #1a1611;
  --surface: #1f1a14;
  --surface-2: #261f18;
  --tint: #2d251c;
  --text: #f1ebe2;
  --muted: #b5a894;
  --border: #31291f;
  --border-strong: #4a3e2f;

  --accent: var(--yellow);
  --accent-hover: #ffd666;
  --on-accent: var(--ink);
  --accent-soft: rgb(255 201 60 / 14%);
  --link: #f2c46d;
  --link-deco: rgb(242 196 109 / 45%);
  --link-hover: #ffe0a3;
  --focus: var(--yellow);

  --logo-line: var(--yellow);
  --logo-outline: transparent;

  --code-bg: #100d0a;
  --code-text: #e6dccd;
  --inline-code-bg: #2a231b;
  --inline-code-text: #f1e6d4;

  --hl-comment: #9d907e;
  --hl-keyword: #f2a65a;
  --hl-string: #d9c36a;
  --hl-number: #f19a7a;
  --hl-name: #f2c46d;
  --hl-func: #d6b0f0;
  --hl-var: #ef9bbd;
  --hl-tag: #f2a65a;
  --hl-attr: #e8c17a;
  --hl-op: #b8ab99;
  --hl-del-bg: #4a2427;
  --hl-ins-bg: #2c3a1d;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --font-logo: Georgia, "Times New Roman", serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --measure: 70ch;
  --wide: 76rem;
  --radius: 12px;
  --radius-sm: 7px;
  --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 10px 30px -14px rgb(0 0 0 / 60%);
  --header-h: 3.9rem;
}

:root:not([data-theme="dark"]) {
  color-scheme: light;
  --bg: #f7f2ea;
  --bg-band: #f1e9dc;
  --surface: #fffcf6;
  --surface-2: #f2eadd;
  --tint: #ebe0cf;
  --text: #231b12;
  --muted: #6b5d4c;
  --border: #e2d6c3;
  --border-strong: #cbb9a0;
  --accent-hover: #ffbb1a;
  --accent-soft: rgb(224 165 38 / 24%);
  --link: #8b5a1b;
  --link-deco: rgb(139 90 27 / 45%);
  --link-hover: #5e3b0f;
  --focus: #8b5a1b;
  --logo-line: var(--ink);
  --logo-outline: var(--ink);
  --code-bg: #f2eadd;
  --code-text: #2a2118;
  --inline-code-bg: #efe5d6;
  --inline-code-text: #3a2a17;
  --hl-comment: #6f6253;
  --hl-keyword: #93361c;
  --hl-string: #5c6614;
  --hl-number: #9a3b1c;
  --hl-name: #7a4f12;
  --hl-func: #6a3f8c;
  --hl-var: #8a2f52;
  --hl-tag: #93361c;
  --hl-attr: #6b4a00;
  --hl-op: #5a4f43;
  --hl-del-bg: #f6dede;
  --hl-ins-bg: #e6efd6;
  --shadow: 0 1px 2px rgb(35 27 18 / 6%), 0 8px 24px -12px rgb(35 27 18 / 20%);
}


/* ---------- Fonts ----------
   Newsreader (SIL Open Font License 1.1, see fonts/OFL.txt), self-hosted:
   one variable file, weights 400 to 600, Latin subset. */
@font-face {
  font-family: "Newsreader";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("fonts/newsreader-latin-wght.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img, svg, video { max-width: 100%; height: auto; }

a {
  color: var(--link);
  text-decoration-color: var(--link-deco);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.2em;
}
a:hover { color: var(--link-hover); text-decoration-color: currentColor; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

main:focus { outline: none; }

::selection { background: var(--yellow); color: var(--ink); }

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.nowrap { white-space: nowrap; }

.wrap {
  width: 100%;
  max-width: var(--wide);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: var(--on-accent);
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { top: 0.75rem; color: var(--on-accent); }

/* ---------- Logo ---------- */
.logo { display: inline-flex; align-items: center; gap: 0.5rem; }
.logo-mark { width: 2.1rem; height: 2.1rem; flex: none; overflow: visible; }
.logo-ant { stroke: var(--logo-line); }
.logo-ant-dot { fill: var(--logo-line); }
.logo-bubble { fill: var(--yellow); stroke: var(--logo-outline); }
.logo-dots { fill: var(--ink); }
.logo-word {
  font-family: var(--font-logo);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  line-height: 1;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}

@supports not (background: color-mix(in srgb, red 50%, blue)) {
  .site-header { background: var(--bg); }
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: var(--header-h);
}

.brand {
  margin-right: auto;
  color: var(--text);
  text-decoration: none;
}
.brand:hover { color: var(--text); }

.site-nav { order: 1; }
.theme-toggle { order: 2; }
.nav-toggle { order: 3; }

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  display: block;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}
.site-nav a:hover { color: var(--text); background: var(--tint); }
.site-nav a[aria-current="page"] { color: var(--on-accent); background: var(--accent); }
.site-nav .nav-external a::after { content: " \2197"; font-size: 0.85em; }

.theme-toggle {
  display: inline-grid;
  place-items: center;
  flex: none;
  width: 2.35rem;
  height: 2.35rem;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}
.theme-toggle:hover { border-color: var(--text); }
.theme-toggle svg {
  grid-area: 1 / 1;
  width: 1.1rem;
  height: 1.1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
/* Show the icon of the theme you would switch to: light is the default. */
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
html:not(.js) .theme-toggle { display: none; }

.nav-toggle { display: none; }

@media (max-width: 56rem) {
  .js .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 2.35rem;
    padding: 0.4rem 0.85rem;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    background: var(--surface);
    color: var(--text);
    font: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
  }
  .nav-toggle-bars,
  .nav-toggle-bars::before,
  .nav-toggle-bars::after {
    display: block;
    width: 1rem;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    content: "";
  }
  .nav-toggle-bars { position: relative; }
  .nav-toggle-bars::before { position: absolute; top: -5px; }
  .nav-toggle-bars::after { position: absolute; top: 5px; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { top: 0; transform: rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { top: 0; transform: rotate(-45deg); }

  .header-inner { flex-wrap: wrap; }

  /* Without JS the nav simply wraps below the brand. */
  .site-nav { order: 4; flex-basis: 100%; padding-bottom: 0.6rem; }
  .js .site-nav { display: none; }
  .js .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; gap: 0.1rem; }
  .site-nav a { border-radius: var(--radius-sm); padding: 0.6rem 0.75rem; font-size: 1rem; }
}

@media (max-width: 23rem) {
  .nav-toggle-label { display: none; }
  .logo-word { font-size: 1.25rem; }
}

/* ---------- Buttons ---------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.9rem;
  padding: 0.65rem 1.4rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 650;
  font-size: 1rem;
  line-height: 1.2;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.button-primary { background: var(--accent); color: var(--on-accent); }
.button-primary:hover { background: var(--accent-hover); color: var(--on-accent); }
.button-quiet { border-color: var(--border-strong); color: var(--text); background: transparent; }
.button-quiet:hover { border-color: var(--text); color: var(--text); }

/* ---------- Docs pages ---------- */
.doc-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 3rem;
  padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(3rem, 8vw, 6rem);
}

/* "On this page" sidebar, filled by site.js from the h2 headings. */
.doc-toc { display: none; }

@media (min-width: 72rem) {
  .has-toc .doc-shell { grid-template-columns: minmax(0, 46rem) 14rem; justify-content: center; align-items: start; gap: 4rem; }
  .has-toc .doc-toc {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 2rem);
    max-height: calc(100vh - var(--header-h) - 4rem);
    overflow-y: auto;
    padding: 0.25rem 0 1rem;
    font-size: 0.9rem;
  }
  /* The Markdown contents list at the top is replaced by the sidebar. */
  .has-toc .prose > ul.toc-list { display: none; }
  .has-toc .prose, .has-toc .doc-pager { margin-inline: 0; }
}

.doc-toc h2 {
  margin: 0 0 0.6rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.doc-toc ol { margin: 0; padding: 0; list-style: none; }
.doc-toc a {
  display: block;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  color: var(--muted);
  line-height: 1.35;
  text-decoration: none;
}
.doc-toc a:hover { color: var(--text); background: var(--tint); }
.doc-toc a.is-active { color: var(--text); background: var(--accent-soft); }

.doc-pager {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1rem;
  max-width: var(--measure);
  margin: 3.5rem auto 0;
  padding: 0;
  list-style: none;
}
.doc-pager a {
  display: block;
  padding: 1rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
}
.doc-pager a:hover { border-color: var(--border-strong); background: var(--surface-2); }
.doc-pager small { display: block; color: var(--muted); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
.doc-pager b { font-family: var(--font-serif); font-size: 1.2rem; font-weight: 600; }
.doc-pager .next { text-align: right; }

/* ---------- Prose ---------- */
.prose {
  max-width: var(--measure);
  min-width: 0;
  margin-inline: auto;
  overflow-wrap: break-word;
}

.prose > :first-child { margin-top: 0; }

.prose h1, .prose h2, .prose h3, .prose h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--text);
  font-optical-sizing: auto;
}

.prose h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  font-weight: 500;
  letter-spacing: -0.025em;
}

/* Lead paragraph right after the page title. */
.prose h1 + p {
  font-size: 1.2rem;
  line-height: 1.55;
  color: var(--muted);
}

.prose h2 {
  margin: 3.25rem 0 1rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border);
  font-size: clamp(1.65rem, 3.6vw, 2.1rem);
}

.prose h3 { margin: 2.25rem 0 0.6rem; font-size: 1.4rem; }
.prose h4 { margin: 1.75rem 0 0.5rem; font-size: 1.15rem; }

.prose p, .prose ul, .prose ol, .prose blockquote, .prose table, .prose pre, .prose .highlighter-rouge, .prose figure {
  margin-block: 0 1.15rem;
}

.prose ul, .prose ol { padding-left: 1.4rem; }
.prose li + li { margin-top: 0.3rem; }
.prose li > ul, .prose li > ol { margin-top: 0.3rem; margin-bottom: 0; }
.prose li::marker { color: var(--muted); }

.prose strong { font-weight: 650; }

.prose hr { margin: 2.5rem 0; border: 0; border-top: 1px solid var(--border); }

.prose blockquote {
  margin-inline: 0;
  padding: 0.9rem 1.15rem;
  background: var(--tint);
  border-radius: var(--radius);
  color: var(--text);
}
.prose blockquote > :last-child { margin-bottom: 0; }

.prose img {
  display: block;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: var(--surface-2);
  margin-block: 1.75rem;
}
.prose img.is-missing { display: none; }
.prose .img-link { display: block; cursor: zoom-in; }
.prose .img-link:focus-visible { outline-offset: 4px; border-radius: var(--radius); }

.heading-anchor {
  margin-left: 0.4em;
  color: var(--muted);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 0.75em;
  text-decoration: none;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.prose h2:hover .heading-anchor,
.prose h3:hover .heading-anchor,
.heading-anchor:focus-visible { opacity: 1; }
@media (hover: none) { .heading-anchor { display: none; } }

/* The contents list at the top of a page (in-page links before the first h2). */
.prose > ul.toc-list,
.prose > ul:not(h2 ~ ul):has(> li:first-child > a:only-child[href^="#"]) {
  columns: 2 16rem;
  column-gap: 2rem;
  padding: 1.1rem 1.35rem;
  list-style: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
}
.prose > ul.toc-list::before,
.prose > ul:not(h2 ~ ul):has(> li:first-child > a:only-child[href^="#"])::before {
  content: "On this page";
  display: block;
  margin-bottom: 0.5rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  column-span: all;
}
.prose > ul.toc-list li,
.prose > ul:not(h2 ~ ul):has(> li:first-child > a:only-child[href^="#"]) li { margin: 0 0 0.35rem; break-inside: avoid; }
.prose > ul.toc-list a { text-decoration: none; }
.prose > ul.toc-list a:hover { text-decoration: underline; }

/* Tables: a scroll box on small screens, a calm grid everywhere. */
.prose table {
  display: block;
  width: max-content;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 0.94rem;
  line-height: 1.5;
  -webkit-overflow-scrolling: touch;
}
.prose th, .prose td {
  padding: 0.6rem 0.85rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}
.prose th + th, .prose td + td { border-left: 1px solid var(--border); }
.prose thead th {
  background: var(--surface-2);
  font-weight: 600;
  white-space: nowrap;
}
.prose tbody tr:last-child td { border-bottom: 0; }
.prose tbody tr:hover td { background: color-mix(in srgb, var(--tint) 45%, transparent); }
.prose td code { white-space: nowrap; }

/* Inline code */
.prose code { font-family: var(--font-mono); font-size: 0.86em; }
.prose :not(pre) > code {
  padding: 0.12em 0.35em;
  border-radius: 4px;
  background: var(--inline-code-bg);
  color: var(--inline-code-text);
}

/* Code blocks */
.prose pre, .code pre {
  margin: 0;
  padding: 1rem 1.15rem;
  overflow-x: auto;
  background: var(--code-bg);
  color: var(--code-text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
  tab-size: 4;
  -webkit-overflow-scrolling: touch;
}
.prose pre code, .code pre code { font-size: inherit; background: none; padding: 0; white-space: pre; color: inherit; }
.prose .highlighter-rouge, .code .highlighter-rouge, .code .highlight { position: relative; }
.prose div.highlight, .code div.highlight { margin: 0; }

/* Language label and copy button on code blocks. */
.code-label {
  position: absolute;
  top: 0.5rem;
  right: 0.7rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.copy-button {
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  letter-spacing: 0.04em;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.highlighter-rouge:hover .copy-button,
.highlight:hover .copy-button,
.copy-button:focus-visible,
.copy-button.is-done { opacity: 1; }
@media (hover: none) { .copy-button { opacity: 1; } }

/* ---------- Rouge tokens ---------- */
.highlight .c, .highlight .ch, .highlight .cd, .highlight .cm, .highlight .cpf,
.highlight .c1, .highlight .cs { color: var(--hl-comment); font-style: italic; }
.highlight .cp { color: var(--hl-keyword); }
.highlight .k, .highlight .kc, .highlight .kd, .highlight .kn, .highlight .kp,
.highlight .kr, .highlight .kv, .highlight .ow { color: var(--hl-keyword); font-weight: 600; }
.highlight .kt { color: var(--hl-name); }
.highlight .s, .highlight .sa, .highlight .sb, .highlight .sc, .highlight .dl,
.highlight .sd, .highlight .s2, .highlight .se, .highlight .sh, .highlight .si,
.highlight .sx, .highlight .s1, .highlight .ss, .highlight .sr { color: var(--hl-string); }
.highlight .se, .highlight .si { font-weight: 600; }
.highlight .m, .highlight .mb, .highlight .mf, .highlight .mh, .highlight .mi,
.highlight .il, .highlight .mo, .highlight .mx { color: var(--hl-number); }
.highlight .na { color: var(--hl-attr); }
.highlight .nb, .highlight .bp { color: var(--hl-name); }
.highlight .nc, .highlight .nn, .highlight .no, .highlight .ne { color: var(--hl-name); font-weight: 600; }
.highlight .nf, .highlight .fm, .highlight .nd { color: var(--hl-func); }
.highlight .nv, .highlight .vc, .highlight .vg, .highlight .vi, .highlight .vm { color: var(--hl-var); }
.highlight .nt { color: var(--hl-tag); }
.highlight .nl, .highlight .py { color: var(--hl-attr); }
.highlight .o, .highlight .p, .highlight .pi { color: var(--hl-op); }
.highlight .gd { background: var(--hl-del-bg); }
.highlight .gi { background: var(--hl-ins-bg); }
.highlight .ge { font-style: italic; }
.highlight .gs { font-weight: 700; }
.highlight .gh, .highlight .gu { color: var(--hl-keyword); font-weight: 600; }
.highlight .gp { color: var(--hl-comment); user-select: none; }
.highlight .err { color: inherit; background: none; }
.highlight .w { color: inherit; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-band);
  color: var(--muted);
  font-size: 0.95rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr));
  gap: 2rem 3rem;
  padding-block: 3rem 2rem;
}
.footer-about p { max-width: 34ch; margin: 0.9rem 0 0; }
.footer-col h2 {
  margin: 0 0 0.6rem;
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.footer-col ul { margin: 0; padding: 0; list-style: none; }
.footer-col li + li { margin-top: 0.35rem; }
.site-footer a { color: var(--text); text-decoration-color: var(--border-strong); }
.site-footer a:hover { text-decoration-color: currentColor; }
.footer-brand { color: var(--text); text-decoration: none; }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0 2rem;
  padding-block: 0 2rem;
  background: linear-gradient(var(--border), var(--border)) content-box 0 0 / 100% 1px no-repeat;
  font-size: 0.88rem;
}
.footer-bottom p { margin: 1.25rem 0 0; }

@media (max-width: 44rem) {
  .footer-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-about { grid-column: 1 / -1; }
}

/* ---------- Small screens ---------- */
@media (max-width: 30rem) {
  body { font-size: 1rem; }
  .prose h2 { margin-top: 2.5rem; padding-top: 1.25rem; }
  .prose pre { padding: 0.85rem 0.9rem; font-size: 0.82rem; border-radius: var(--radius-sm); }
  .prose table { font-size: 0.88rem; }
}

/* ---------- Print ---------- */
@media print {
  .site-header, .site-footer, .skip-link, .heading-anchor, .doc-toc, .copy-button, .doc-pager { display: none !important; }
  body { background: #fff; color: #000; }
  .prose pre { white-space: pre-wrap; }
}