/* The site's one stylesheet: Material 3, drawn with Faraday's own look,
   for every page (web/*.html and the guides, tools/guides.py), served
   as assets/site.css. A page's own <style> holds only what that page
   alone has, written in these tokens.

   - Colour: Material 3's roles for Cobalt, the app's default theme, as
     the app has them (tools/roles.py copies them from Faraday's
     generated tables; `just lint` fails when they differ), Light and
     Dark by prefers-color-scheme. Components take the roles Faraday's
     docs/THEMES.md §7 gives them.
   - Type, shape, state layers, elevation and motion: Material 3's
     tokens, below; spacing on a 4 px grid; Material's window classes,
     compact under 600 px, medium 600, expanded 840, large 1200,
     extra-large 1600, with a 16 px margin on compact and 24 px from
     medium up.
   - Typefaces stay the system's (no font is fetched): Material's type
     scale in them. */

/* roles: begin (tools/roles.py writes these; not edited by hand) */
/* Cobalt (#0047AB, fidelity), Standard contrast: Faraday's faraday/faraday-ui/src/pal/schemes.rs
   at 73984cb10f03d3e90ec3a8cbd76a4acbec116150, made by material-color-utilities 0.4.0 (commit eeaf82b8e11b). */
:root {
  --md-sys-color-primary: #00327d;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #0047ab;
  --md-sys-color-on-primary-container: #a5bdff;
  --md-sys-color-inverse-primary: #b1c5ff;
  --md-sys-color-secondary: #4e5e85;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #c1d1ff;
  --md-sys-color-on-secondary-container: #4a5980;
  --md-sys-color-tertiary: #651f00;
  --md-sys-color-on-tertiary: #ffffff;
  --md-sys-color-tertiary-container: #8b2e01;
  --md-sys-color-on-tertiary-container: #ffaa8a;
  --md-sys-color-error: #ba1a1a;
  --md-sys-color-on-error: #ffffff;
  --md-sys-color-error-container: #ffdad6;
  --md-sys-color-on-error-container: #93000a;
  --md-sys-color-surface: #faf8ff;
  --md-sys-color-surface-dim: #d9d9e2;
  --md-sys-color-surface-bright: #faf8ff;
  --md-sys-color-surface-container-lowest: #ffffff;
  --md-sys-color-surface-container-low: #f3f3fc;
  --md-sys-color-surface-container: #ededf6;
  --md-sys-color-surface-container-high: #e7e7f0;
  --md-sys-color-surface-container-highest: #e2e2eb;
  --md-sys-color-on-surface: #191b22;
  --md-sys-color-on-surface-variant: #434653;
  --md-sys-color-outline: #737784;
  --md-sys-color-outline-variant: #c3c6d5;
  --md-sys-color-inverse-surface: #2e3037;
  --md-sys-color-inverse-on-surface: #f0f0f9;
  --md-sys-color-scrim: #000000;
  --md-sys-color-shadow: #000000;
  --md-sys-color-ok: #006d43;
  --md-sys-color-on-ok: #ffffff;
  --md-sys-color-ok-container: #92f7bc;
  --md-sys-color-on-ok-container: #005231;
  --md-sys-color-warning: #8b5000;
  --md-sys-color-on-warning: #ffffff;
  --md-sys-color-warning-container: #ffdcbe;
  --md-sys-color-on-warning-container: #693c00;
  --md-sys-color-checksum: #8b4c50;
  --md-sys-color-on-checksum: #ffffff;
  --md-sys-color-checksum-container: #ffdada;
  --md-sys-color-on-checksum-container: #6f353a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --md-sys-color-primary: #b1c5ff;
    --md-sys-color-on-primary: #002c70;
    --md-sys-color-primary-container: #0047ab;
    --md-sys-color-on-primary-container: #a5bdff;
    --md-sys-color-inverse-primary: #2559bd;
    --md-sys-color-secondary: #b6c6f3;
    --md-sys-color-on-secondary: #1f2f54;
    --md-sys-color-secondary-container: #39486e;
    --md-sys-color-on-secondary-container: #a8b8e4;
    --md-sys-color-tertiary: #ffb59a;
    --md-sys-color-on-tertiary: #5b1b00;
    --md-sys-color-tertiary-container: #8b2e01;
    --md-sys-color-on-tertiary-container: #ffaa8a;
    --md-sys-color-error: #ffb4ab;
    --md-sys-color-on-error: #690005;
    --md-sys-color-error-container: #93000a;
    --md-sys-color-on-error-container: #ffdad6;
    --md-sys-color-surface: #111319;
    --md-sys-color-surface-dim: #111319;
    --md-sys-color-surface-bright: #373940;
    --md-sys-color-surface-container-lowest: #0c0e14;
    --md-sys-color-surface-container-low: #191b22;
    --md-sys-color-surface-container: #1d1f26;
    --md-sys-color-surface-container-high: #282a30;
    --md-sys-color-surface-container-highest: #33343b;
    --md-sys-color-on-surface: #e2e2eb;
    --md-sys-color-on-surface-variant: #c3c6d5;
    --md-sys-color-outline: #8d909e;
    --md-sys-color-outline-variant: #434653;
    --md-sys-color-inverse-surface: #e2e2eb;
    --md-sys-color-inverse-on-surface: #2e3037;
    --md-sys-color-scrim: #000000;
    --md-sys-color-shadow: #000000;
    --md-sys-color-ok: #76daa1;
    --md-sys-color-on-ok: #003920;
    --md-sys-color-ok-container: #005231;
    --md-sys-color-on-ok-container: #92f7bc;
    --md-sys-color-warning: #ffb870;
    --md-sys-color-on-warning: #4a2800;
    --md-sys-color-warning-container: #693c00;
    --md-sys-color-on-warning-container: #ffdcbe;
    --md-sys-color-checksum: #ffb3b6;
    --md-sys-color-on-checksum: #532025;
    --md-sys-color-checksum-container: #6f353a;
    --md-sys-color-on-checksum-container: #ffdada;
  }
}
/* roles: end */

:root {
  color-scheme: light dark;

  /* Typefaces: the system's, as the site has always used. */
  --md-ref-typeface-plain: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", Ubuntu, Cantarell, sans-serif;
  --md-ref-typeface-brand: var(--md-ref-typeface-plain);
  --md-ref-typeface-mono: ui-monospace, "Cascadia Mono", "JetBrains Mono", "Noto Sans Mono", Consolas, monospace;

  /* Material 3's type scale: weight, size/line height, and tracking. */
  --md-sys-typescale-display-large: 400 57px/64px var(--md-ref-typeface-brand);
  --md-sys-typescale-display-large-tracking: -0.25px;
  --md-sys-typescale-display-medium: 400 45px/52px var(--md-ref-typeface-brand);
  --md-sys-typescale-display-small: 400 36px/44px var(--md-ref-typeface-brand);
  --md-sys-typescale-headline-large: 400 32px/40px var(--md-ref-typeface-brand);
  --md-sys-typescale-headline-medium: 400 28px/36px var(--md-ref-typeface-brand);
  --md-sys-typescale-headline-small: 400 24px/32px var(--md-ref-typeface-brand);
  --md-sys-typescale-title-large: 400 22px/28px var(--md-ref-typeface-brand);
  --md-sys-typescale-title-medium: 500 16px/24px var(--md-ref-typeface-plain);
  --md-sys-typescale-title-medium-tracking: 0.15px;
  --md-sys-typescale-title-small: 500 14px/20px var(--md-ref-typeface-plain);
  --md-sys-typescale-title-small-tracking: 0.1px;
  --md-sys-typescale-body-large: 400 16px/24px var(--md-ref-typeface-plain);
  --md-sys-typescale-body-large-tracking: 0.5px;
  --md-sys-typescale-body-medium: 400 14px/20px var(--md-ref-typeface-plain);
  --md-sys-typescale-body-medium-tracking: 0.25px;
  --md-sys-typescale-body-small: 400 12px/16px var(--md-ref-typeface-plain);
  --md-sys-typescale-body-small-tracking: 0.4px;
  --md-sys-typescale-label-large: 500 14px/20px var(--md-ref-typeface-plain);
  --md-sys-typescale-label-large-tracking: 0.1px;
  --md-sys-typescale-label-medium: 500 12px/16px var(--md-ref-typeface-plain);
  --md-sys-typescale-label-medium-tracking: 0.5px;
  --md-sys-typescale-label-small: 500 11px/16px var(--md-ref-typeface-plain);
  --md-sys-typescale-label-small-tracking: 0.5px;

  /* Material 3's shape scale. */
  --md-sys-shape-corner-none: 0;
  --md-sys-shape-corner-extra-small: 4px;
  --md-sys-shape-corner-small: 8px;
  --md-sys-shape-corner-medium: 12px;
  --md-sys-shape-corner-large: 16px;
  --md-sys-shape-corner-extra-large: 28px;
  --md-sys-shape-corner-full: 9999px;

  /* State layers, as the app (Faraday F113): the content's colour over
     the control at these opacities. */
  --md-sys-state-hover-state-layer-opacity: 0.08;
  --md-sys-state-focus-state-layer-opacity: 0.10;
  --md-sys-state-pressed-state-layer-opacity: 0.10;
  --md-sys-state-dragged-state-layer-opacity: 0.16;
  --md-sys-state-disabled-content-opacity: 0.38;
  --md-sys-state-disabled-container-opacity: 0.12;

  /* Elevation: Material's two shadows, key and ambient, in the shadow
     role, by level. */
  --md-shadow-key: color-mix(in srgb, var(--md-sys-color-shadow) 30%, transparent);
  --md-shadow-ambient: color-mix(in srgb, var(--md-sys-color-shadow) 15%, transparent);
  --md-sys-elevation-level0: none;
  --md-sys-elevation-level1: 0 1px 2px 0 var(--md-shadow-key), 0 1px 3px 1px var(--md-shadow-ambient);
  --md-sys-elevation-level2: 0 1px 2px 0 var(--md-shadow-key), 0 2px 6px 2px var(--md-shadow-ambient);
  --md-sys-elevation-level3: 0 1px 3px 0 var(--md-shadow-key), 0 4px 8px 3px var(--md-shadow-ambient);
  --md-sys-elevation-level4: 0 2px 3px 0 var(--md-shadow-key), 0 6px 10px 4px var(--md-shadow-ambient);
  --md-sys-elevation-level5: 0 4px 4px 0 var(--md-shadow-key), 0 8px 12px 6px var(--md-shadow-ambient);

  /* Material 3's motion: easing and duration. */
  --md-sys-motion-easing-standard: cubic-bezier(0.2, 0, 0, 1);
  --md-sys-motion-easing-standard-accelerate: cubic-bezier(0.3, 0, 1, 1);
  --md-sys-motion-easing-standard-decelerate: cubic-bezier(0, 0, 0, 1);
  --md-sys-motion-easing-emphasized: cubic-bezier(0.2, 0, 0, 1);
  --md-sys-motion-easing-emphasized-accelerate: cubic-bezier(0.3, 0, 0.8, 0.15);
  --md-sys-motion-easing-emphasized-decelerate: cubic-bezier(0.05, 0.7, 0.1, 1);
  --md-sys-motion-duration-short1: 50ms;
  --md-sys-motion-duration-short2: 100ms;
  --md-sys-motion-duration-short3: 150ms;
  --md-sys-motion-duration-short4: 200ms;
  --md-sys-motion-duration-medium1: 250ms;
  --md-sys-motion-duration-medium2: 300ms;
  --md-sys-motion-duration-medium3: 350ms;
  --md-sys-motion-duration-medium4: 400ms;
  --md-sys-motion-duration-long1: 450ms;
  --md-sys-motion-duration-long2: 500ms;
  --md-sys-motion-duration-long3: 550ms;
  --md-sys-motion-duration-long4: 600ms;
  --md-sys-motion-duration-extra-long1: 700ms;
  --md-sys-motion-duration-extra-long2: 800ms;

  /* The window's margin: 16 px on compact, 24 px from medium up. */
  --margin: 16px;

  /* The shield's rim: primary halfway to white, as the app draws it. */
  --rim: color-mix(in srgb, var(--md-sys-color-primary), white 50%);
}
@media (width >= 600px) { :root { --margin: 24px; } }

/* The page. */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--bar-h, 64px); }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface);
  font: var(--md-sys-typescale-body-large);
  letter-spacing: var(--md-sys-typescale-body-large-tracking);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4 { letter-spacing: 0; }
a { color: var(--md-sys-color-primary); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--md-sys-color-secondary); outline-offset: 2px; }
button { font: inherit; letter-spacing: inherit; }
code { font: 0.92em/1.4 var(--md-ref-typeface-mono); letter-spacing: 0; overflow-wrap: anywhere; }
main:focus { outline: none; }
.skip-link {
  position: absolute; left: 12px; top: -64px; z-index: 100;
  display: inline-flex; align-items: center; height: 40px; padding: 0 24px;
  font: var(--md-sys-typescale-label-large); letter-spacing: var(--md-sys-typescale-label-large-tracking);
  color: var(--md-sys-color-on-primary); background: var(--md-sys-color-primary);
  border-radius: var(--md-sys-shape-corner-full);
}
.skip-link:focus { top: 12px; text-decoration: none; }

/* State layers: the content's colour over the control, at Material's
   opacities for hover, focus and press. (:where, so a control's own
   position, fixed or absolute, stands.) */
:where(.btn, .bar nav a.plain, .menu-list a, .menu-list button, .close, .icon-btn, .skip, .copy, .chip, .arrow, .play, .pos-btn, button.more, .less button, details.card summary) {
  position: relative;
  isolation: isolate;
}
:is(.btn, .bar nav a.plain, .menu-list a, .menu-list button, .close, .icon-btn, .skip, .copy, .chip, .arrow, .play, .pos-btn, button.more, .less button, details.card summary)::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: currentColor;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}
:is(.btn, .bar nav a.plain, .menu-list a, .menu-list button, .close, .icon-btn, .skip, .copy, .chip, .arrow, .play, .pos-btn, button.more, .less button, details.card summary):hover::before { opacity: var(--md-sys-state-hover-state-layer-opacity); }
:is(.btn, .bar nav a.plain, .menu-list a, .menu-list button, .close, .icon-btn, .skip, .copy, .chip, .arrow, .play, .pos-btn, button.more, .less button, details.card summary):focus-visible::before { opacity: var(--md-sys-state-focus-state-layer-opacity); }
:is(.btn, .bar nav a.plain, .menu-list a, .menu-list button, .close, .icon-btn, .skip, .copy, .chip, .arrow, .play, .pos-btn, button.more, .less button, details.card summary):active::before { opacity: var(--md-sys-state-pressed-state-layer-opacity); }
/* A control smaller than 48 px is pressed anywhere in the 48 px around
   it. */
:is(.btn, .bar nav a.plain, .close, .icon-btn, .copy, .chip, .arrow, .play)::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: max(100%, 48px);
  height: max(100%, 48px);
  transform: translate(-50%, -50%);
}

/* Buttons: 40 px high, full corners, the label in label large. .btn is
   Material's outlined button; .accent the filled, .tonal the tonal and
   .text the text button. */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 24px;
  font: var(--md-sys-typescale-label-large);
  letter-spacing: var(--md-sys-typescale-label-large-tracking);
  color: var(--md-sys-color-primary);
  background: none;
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-full);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  white-space: nowrap;
  transition: box-shadow var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}
.btn:hover { text-decoration: none; }
.btn:has(> svg:first-child) { padding-left: 16px; }
.btn svg { width: 18px; height: 18px; flex: none; }
.btn.accent { color: var(--md-sys-color-on-primary); background: var(--md-sys-color-primary); border-color: transparent; }
.btn.accent:hover { box-shadow: var(--md-sys-elevation-level1); }
.btn.tonal { color: var(--md-sys-color-on-secondary-container); background: var(--md-sys-color-secondary-container); border-color: transparent; }
.btn.tonal:hover { box-shadow: var(--md-sys-elevation-level1); }
.btn.text { padding: 0 12px; border-color: transparent; }
.btn.text:has(> svg:first-child) { padding: 0 16px 0 12px; }
/* A download not yet in a release: shown, not offered, as Material's
   disabled outlined button. */
.btn.soon {
  color: color-mix(in srgb, var(--md-sys-color-on-surface) 38%, transparent);
  border-color: color-mix(in srgb, var(--md-sys-color-on-surface) 12%, transparent);
  cursor: default;
}
.btn.soon::before { display: none; }
.btn small { font: inherit; opacity: 0.8; }
/* An icon button: 40 px round, its 24 px icon in on-surface-variant. */
.icon-btn, .close {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  color: var(--md-sys-color-on-surface-variant);
  background: none;
  border: 0;
  border-radius: var(--md-sys-shape-corner-full);
  cursor: pointer;
}
.icon-btn svg, .close svg { width: 24px; height: 24px; }

/* The top app bar: surface, and surface-container once the page has
   scrolled under it. */
.bar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--md-sys-color-surface);
  transition: transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized);
}
@supports (animation-timeline: scroll()) {
  @keyframes bar-under { to { background: var(--md-sys-color-surface-container); } }
  .bar { animation: bar-under linear both; animation-timeline: scroll(root); animation-range: 0 8px; }
}
.bar-in {
  max-width: 1920px;
  margin: 0 auto;
  padding: 12px var(--margin);
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 64px;
}
/* The lockup, in the bar and on the home page's opening: the shield,
   centred beside the two lines, the name and, under it, as wide as it,
   the words. --cap is the name's capital height. The name is the app's
   wordmark (#wordmark): FARADAY in Archivo Expanded SemiBold,
   hand-kerned, each A's crossbar cut free of its legs; the words
   (#tagline) are OFFLINE APP in Archivo Medium, spaced to the name's
   width, 0.62 of its height; both outlines, so no font. 6067 by 687 and
   by 426 font units. */
.brand, .wordmark {
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  column-gap: calc(var(--cap) * 0.75);
  row-gap: calc(var(--cap) * 0.22);
  width: max-content;
}
.brand { --cap: 13px; color: var(--md-sys-color-on-surface); }
.brand:hover { text-decoration: none; }
.mark { grid-row: 1 / span 2; grid-column: 1; align-self: center; display: block; width: calc(var(--cap) * 1.6); height: auto; }
.name { grid-row: 1; grid-column: 2; display: block; fill: currentColor; height: var(--cap); width: calc(var(--cap) * 6067 / 687); }
.under { grid-row: 2; grid-column: 2; display: block; fill: var(--md-sys-color-on-surface-variant); overflow: visible; height: calc(var(--cap) * 426 / 687); width: calc(var(--cap) * 6067 / 687); }
.bar nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
/* The bar's links: text buttons in on-surface-variant; the page you are
   on in secondary-container, as a navigation item's active indicator. */
.bar nav a.plain {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 12px;
  font: var(--md-sys-typescale-label-large);
  letter-spacing: var(--md-sys-typescale-label-large-tracking);
  color: var(--md-sys-color-on-surface-variant);
  border-radius: var(--md-sys-shape-corner-full);
}
.bar nav a.plain:hover { text-decoration: none; }
.bar nav a.plain[aria-current] { color: var(--md-sys-color-on-secondary-container); background: var(--md-sys-color-secondary-container); }
/* Buy me a coffee and X are their marks alone, in outlined pill buttons
   (owner, 2026-10-27); below 1200 px GitHub is too. Below 840 px X
   stays in the bar and Buy me a coffee is the footer's alone. */
.btn.coffee, .bar nav .btn.coffee, .bar nav .btn.x { width: auto; padding: 0 16px; }
@media (width < 1200px) {
  .bar nav .btn:is(.gh, [aria-label="GitHub"]) { width: 40px; padding: 0; }
  .bar nav .btn:is(.gh, [aria-label="GitHub"]) span { display: none; }
}

/* The bar's menu: below 840 px, where the bar's links have no room, a
   Material menu under a button. */
.menu { position: relative; display: none; }
.menu-btn { width: 40px; padding: 0; color: var(--md-sys-color-on-surface-variant); border-color: transparent; }
.menu-btn svg { width: 24px; height: 24px; }
.menu-list {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  z-index: 60;
  min-width: 200px;
  max-width: 280px;
  margin: 0;
  padding: 8px 0;
  list-style: none;
  background: var(--md-sys-color-surface-container);
  border-radius: var(--md-sys-shape-corner-extra-small);
  box-shadow: var(--md-sys-elevation-level2);
}
.menu-list[hidden] { display: none; }
.menu-list a, .menu-list button {
  display: flex;
  align-items: center;
  width: 100%;
  height: 48px;
  padding: 0 12px;
  font: var(--md-sys-typescale-label-large);
  letter-spacing: var(--md-sys-typescale-label-large-tracking);
  color: var(--md-sys-color-on-surface);
  text-align: left;
  background: none;
  border: 0;
  cursor: pointer;
}
.menu-list a:hover { text-decoration: none; }
.menu-list :focus-visible { outline-offset: -3px; }
.menu-list a[aria-current] { color: var(--md-sys-color-on-secondary-container); background: var(--md-sys-color-secondary-container); }
@media (width < 840px) {
  .bar nav a.plain, .bar nav a.gh, .bar nav > .coffee { display: none; }
  .bar .menu { display: block; }
}

/* A page: a heading, then sections, each a heading and cards. */
main { max-width: calc(1100px + 2 * var(--margin)); margin: 0 auto; padding: 48px var(--margin) 24px; }
.top { text-align: center; margin-bottom: 8px; }
.top h1 { margin: 0 0 8px; font: var(--md-sys-typescale-headline-large); }
.top p { max-width: 640px; margin: 0 auto; color: var(--md-sys-color-on-surface-variant); }
.jump { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 20px 0 0; }
section { padding: 48px 0 8px; }
section + section { border-top: 1px solid var(--md-sys-color-outline-variant); margin-top: 40px; }
section > h2 { margin: 0 0 8px; font: var(--md-sys-typescale-headline-small); text-align: center; }
section > .sub { max-width: 680px; margin: 0 auto 24px; color: var(--md-sys-color-on-surface-variant); text-align: center; }
@media (width >= 840px) {
  .top h1 { font: var(--md-sys-typescale-display-small); }
  section > h2 { font: var(--md-sys-typescale-headline-medium); }
}
@media (width < 600px) { main { padding-top: 32px; } }
.sub-h { margin: 36px 0 8px; font: var(--md-sys-typescale-title-large); text-align: center; }
.aside { max-width: 680px; margin: 16px auto 0; color: var(--md-sys-color-on-surface-variant); font: var(--md-sys-typescale-body-medium); letter-spacing: var(--md-sys-typescale-body-medium-tracking); text-align: center; }
.row { display: flex; flex-wrap: wrap; gap: 8px; }
.more:not(button) { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 40px; }

/* Cards: Faraday's edged card (Faraday docs/THEMES.md §7), the elevated
   card's colour drawn flat with an outline-variant edge, 12 px corners. */
.card {
  padding: 16px;
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-medium);
  font: var(--md-sys-typescale-body-medium);
  letter-spacing: var(--md-sys-typescale-body-medium-tracking);
}
@media (width >= 840px) { .card { padding: 24px; } }
.card h3 { margin: 0 0 4px; font: var(--md-sys-typescale-title-medium); letter-spacing: var(--md-sys-typescale-title-medium-tracking); }
.card > p { margin: 0 0 12px; color: var(--md-sys-color-on-surface-variant); }
.card > p:last-child { margin-bottom: 0; }
.note { margin: 12px 0 0; color: var(--md-sys-color-on-surface-variant); font: var(--md-sys-typescale-body-small); letter-spacing: var(--md-sys-typescale-body-small-tracking); }
.note b { display: block; color: var(--md-sys-color-on-surface); font-weight: 500; }
.none {
  max-width: 680px;
  margin: 0 auto;
  padding: 28px 24px;
  text-align: center;
  color: var(--md-sys-color-on-surface-variant);
  background: var(--md-sys-color-surface-container-low);
  border: 1px dashed var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-medium);
}
/* A label on a heading ("coming soon", "untried"): label medium in a
   small-cornered container. */
.tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  margin-left: 8px;
  padding: 0 8px;
  font: var(--md-sys-typescale-label-medium);
  letter-spacing: var(--md-sys-typescale-label-medium-tracking);
  color: var(--md-sys-color-on-warning-container);
  background: var(--md-sys-color-warning-container);
  border-radius: var(--md-sys-shape-corner-small);
  vertical-align: 0.15em;
}

/* A card that opens: its summary a 56 px row with Material's expand
   icon, turned while open. */
details.card { padding: 0; }
details.card summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 56px;
  padding: 16px;
  font: var(--md-sys-typescale-title-medium);
  letter-spacing: var(--md-sys-typescale-title-medium-tracking);
  color: var(--md-sys-color-on-surface);
  border-radius: inherit;
  cursor: pointer;
  list-style: none;
}
details[open] > summary { border-bottom-left-radius: 0; border-bottom-right-radius: 0; }
details.card summary::-webkit-details-marker { display: none; }
details.card summary::after {
  content: "";
  flex: none;
  width: 24px;
  height: 24px;
  background: var(--md-sys-color-on-surface-variant);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M16.59 8.59 12 13.17 7.41 8.59 6 10l6 6 6-6z'/%3E%3C/svg%3E") center / 24px no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M16.59 8.59 12 13.17 7.41 8.59 6 10l6 6 6-6z'/%3E%3C/svg%3E") center / 24px no-repeat;
  transition: transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized);
}
details.card[open] summary::after { transform: rotate(180deg); }
details.card p { margin: 0; padding: 0 16px 16px; color: var(--md-sys-color-on-surface-variant); }
details.card p b { display: block; color: var(--md-sys-color-on-surface); font-weight: 500; }
@media (width >= 840px) {
  details.card summary { padding: 16px 24px; }
  details.card p { padding: 0 24px 16px; }
}

/* Numbered steps: each a list row, its number in a primary circle. */
.easy { margin: 0; padding: 0; list-style: none; counter-reset: easy; }
.easy li { counter-increment: easy; position: relative; padding: 12px 0 12px 40px; color: var(--md-sys-color-on-surface-variant); border-top: 1px solid var(--md-sys-color-outline-variant); }
.easy li:first-child { border-top: 0; padding-top: 0; }
.easy li::before {
  content: counter(easy);
  position: absolute;
  left: 0;
  top: 12px;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  font: var(--md-sys-typescale-label-large);
  color: var(--md-sys-color-on-primary);
  background: var(--md-sys-color-primary);
  border-radius: var(--md-sys-shape-corner-full);
}
.easy li:first-child::before { top: 0; }
.easy b { display: block; color: var(--md-sys-color-on-surface); font: var(--md-sys-typescale-title-small); letter-spacing: var(--md-sys-typescale-title-small-tracking); }
.notes { margin: 16px 0 0; padding: 0; list-style: none; }
.notes li { padding: 8px 0; color: var(--md-sys-color-on-surface-variant); border-top: 1px solid var(--md-sys-color-outline-variant); }
.notes li:first-child { border-top: 0; }

/* A command or a text to copy, with its Copy button. */
.cmd { position: relative; width: 100%; }
.cmd pre {
  margin: 0;
  padding: 48px 12px 12px;
  overflow-x: auto;
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface-container-highest);
  border-radius: var(--md-sys-shape-corner-small);
  font-size: 12.5px;
}
.cmd code { overflow-wrap: normal; }
/* Copy: Material's extra-small tonal button, 32 px, in a 48 px target. */
.copy {
  position: absolute;
  top: 8px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 12px;
  font: var(--md-sys-typescale-label-large);
  letter-spacing: var(--md-sys-typescale-label-large-tracking);
  color: var(--md-sys-color-on-secondary-container);
  background: var(--md-sys-color-secondary-container);
  border: 0;
  border-radius: var(--md-sys-shape-corner-full);
  cursor: pointer;
}

/* A table of files and the like: rows split by outline-variant. */
.files { width: 100%; border-collapse: collapse; }
.files th, .files td { padding: 12px 0; text-align: left; vertical-align: top; border-top: 1px solid var(--md-sys-color-outline-variant); }
.files tr:first-child th, .files tr:first-child td { border-top: 0; padding-top: 0; }
.files th { padding-right: 16px; font-weight: 500; color: var(--md-sys-color-on-surface); }
.files td { color: var(--md-sys-color-on-surface-variant); }

/* Buy me a coffee: Material's dialog, with the two QR codes. */
.link { padding: 0; font: inherit; color: var(--md-sys-color-on-surface); background: none; border: 0; cursor: pointer; }
.link:hover { text-decoration: underline; text-underline-offset: 3px; }
.coffee-box {
  width: min(calc(100% - 2 * var(--margin)), 560px);
  padding: 24px;
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface-container-high);
  border: 0;
  border-radius: var(--md-sys-shape-corner-extra-large);
  box-shadow: var(--md-sys-elevation-level3);
}
.coffee-box::backdrop { background: color-mix(in srgb, var(--md-sys-color-scrim) 32%, transparent); }
.coffee-box[open] { animation: dialog-in var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-emphasized-decelerate); }
@keyframes dialog-in { from { opacity: 0; transform: translateY(-24px) scale(0.98); } }
.close { position: absolute; top: 12px; right: 12px; }
.coffee-box h2 { margin: 0 40px 16px 0; font: var(--md-sys-typescale-headline-small); }
.coffee-box > p { margin: 0 0 16px; color: var(--md-sys-color-on-surface-variant); font: var(--md-sys-typescale-body-medium); letter-spacing: var(--md-sys-typescale-body-medium-tracking); }
.qrs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.qrs figure { margin: 0; text-align: center; }
/* A QR code is drawn as it is: black on white in either mode. */
.qr {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  padding: 8px;
  color: #444;
  font: var(--md-sys-typescale-body-small);
  background: #fff;
  border: 1px dashed var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-medium);
}
.qr img { width: 100%; height: 100%; object-fit: contain; image-rendering: pixelated; }
.qrs figcaption { margin-top: 8px; font: var(--md-sys-typescale-title-small); letter-spacing: var(--md-sys-typescale-title-small-tracking); }

/* The foot of every page. */
footer {
  margin-top: 48px;
  color: var(--md-sys-color-on-surface-variant);
  font: var(--md-sys-typescale-body-medium);
  letter-spacing: var(--md-sys-typescale-body-medium-tracking);
  border-top: 1px solid var(--md-sys-color-outline-variant);
}
footer div { max-width: calc(1440px + 2 * var(--margin)); margin: 0 auto; padding: 20px var(--margin) 28px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px 20px; }
footer div > :first-child { justify-self: start; }
footer div > :last-child { justify-self: end; }
@media (width < 600px) {
  footer div { grid-template-columns: 1fr; justify-items: center; }
  footer div > :first-child, footer div > :last-child { justify-self: center; }
}
footer a { color: var(--md-sys-color-on-surface); }

/* Reduced motion: nothing moves. */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .bar { background: var(--md-sys-color-surface); }
}