/* Spike Recorder start page (spikerecorder.backyardbrains.com).

   Ported from SpikerBot's start page (BackyardBrains/SpikerBot apps/landing/src/styles.css at
   dcb8977), which is built from the Backyard Brains component standard (backyardbrains.com repo,
   design-system/docs/STANDARDS.md, branch phase2/educator-sales at 06820c0). The tokens and the
   standard parts below (Button, Tag, Landing Kit lockup and sections, section heading, FAQ) are
   copied from that file with the same names, so a later sync is a copy, not a redesign; the Offer
   card and SpikerBot's buy and creature sections are left out because this page has none. Nothing
   is loaded from the Storybook at runtime. Page-only rules (header, footer, screenshots, the
   download grid) are at the end, under "Spike Recorder page", with the prefix sr-. */

/* ------------------------------------------------------------------ fonts */

@font-face {
  font-family: 'Boldoa Mat';
  src: url('assets/fonts/boldoa_mat-webfont.woff2') format('woff2');
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}

/* The app's own hand-drawn font (packages/sr_ui/lib/fonts/BYBHandDrawn.ttf). */
@font-face {
  font-family: 'BYB Hand Drawn';
  src: url('assets/fonts/BYBHandDrawn.ttf') format('truetype');
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto';
  src: url('assets/fonts/roboto-v32-latin-regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto';
  src: url('assets/fonts/roboto-v32-latin-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto';
  src: url('assets/fonts/roboto-v32-latin-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto';
  src: url('assets/fonts/roboto-v32-latin-900.woff2') format('woff2');
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

/* ------------------------------------------------------------------ tokens (design-system/src/css/variables.css) */

:root {
  --byb-color-dark: #000000;
  --byb-color-orange: #fd8164;
  --byb-color-blue: #1996fc;
  --byb-color-white: #ffffff;
  --byb-color-hover-orange: #f07859;
  --byb-color-brown-dark: #3d1f17;
  --byb-color-grey-text: #707070;
  --byb-color-grey: #dbdbdb;
  --byb-color-grey-divider: #e9e9e9;
  --byb-color-grey-bg: #eeeeee;
  --byb-color-grey-bg-light: #f5f5f5;

  --byb-color-tone-dark: var(--byb-color-dark);
  --byb-color-tone-orange: var(--byb-color-orange);
  --byb-color-tone-blue: var(--byb-color-blue);
  --byb-color-tone-white: var(--byb-color-white);
  --byb-color-tone-hover-orange: var(--byb-color-hover-orange);
  --byb-color-tone-brown-dark: var(--byb-color-brown-dark);
  --byb-color-tone-tinted-orange: color-mix(in srgb, var(--byb-color-orange) 40%, var(--byb-color-white));
  --byb-color-tone-light-tinted-orange: color-mix(in srgb, var(--byb-color-orange) 22%, var(--byb-color-white));
  --byb-color-tone-very-light-tinted-orange: color-mix(in srgb, var(--byb-color-orange) 8%, var(--byb-color-white));
  --byb-color-tone-tinted-blue: color-mix(in srgb, var(--byb-color-blue) 22%, var(--byb-color-white));
  --byb-color-tone-grey-text: var(--byb-color-grey-text);
  --byb-color-tone-grey: var(--byb-color-grey);
  --byb-color-tone-grey-divider: var(--byb-color-grey-divider);
  --byb-color-text-primary: var(--byb-color-dark);
  --byb-color-text-secondary: var(--byb-color-grey-text);
  --byb-color-text-inverse: var(--byb-color-white);
  --byb-color-surface-canvas: var(--byb-color-white);

  --byb-type-family-body: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --byb-type-family-hero: 'Boldoa Mat', Impact, 'Arial Narrow Bold', sans-serif;
  --byb-type-family-hand: 'BYB Hand Drawn', 'Comic Sans MS', cursive;
  --byb-type-weight-regular: 400;
  --byb-type-weight-medium: 500;
  --byb-type-weight-bold: 700;
  --byb-type-weight-black: 900;
  --byb-type-scale-sm: 12px;
  --byb-type-scale-base: 14px;
  --byb-type-scale-md: 15px;
  --byb-type-scale-lg: 16px;
  --byb-type-scale-xl: 18px;
  --byb-type-scale-6xl: 28px;
  --byb-type-scale-8xl: 36px;
  --byb-type-main-text-size: 18px;
  --byb-type-main-text-line-height: 1.6667;

  --byb-space-scale-1: 4px;
  --byb-space-scale-2: 8px;
  --byb-space-scale-3: 12px;
  --byb-space-scale-4: 16px;
  --byb-space-scale-5: 20px;
  --byb-space-scale-6: 24px;
  --byb-space-scale-8: 32px;
  --byb-space-scale-10: 40px;
  --byb-space-scale-12: 48px;
  --byb-space-scale-16: 64px;
  --byb-space-page-gutter: 16px;
  --byb-container-default: 1200px;

  --byb-radius-sm: 2px;
  --byb-radius-md: 4px;
  --byb-radius-xl: 8px;
  --byb-radius-full: 999px;
  --byb-radius-pill: 999px;
  --byb-stroke-thin: 1px;
  --byb-stroke-medium: 2px;
  --byb-duration-fast: 100ms;
  --byb-duration-normal: 200ms;
  --byb-ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --byb-focus-ring: 0 0 0 2px var(--byb-color-white), 0 0 0 4px var(--byb-color-orange);
  --byb-focus-ring-offset: 2px;

  --byb-component-button-gap: 8px;
  --byb-component-button-line-height: 24px;
  --byb-component-button-height-sm: 32px;
  --byb-component-button-height-md: 40px;
  --byb-component-button-height-lg: 48px;
  --byb-component-button-padding-inline-sm: 16px;
  --byb-component-button-padding-inline-md: 24px;
  --byb-component-button-padding-inline-lg: 24px;
  --byb-component-button-font-size-sm: 13px;
  --byb-component-button-font-size-md: 15px;
  --byb-component-button-font-size-lg: 15px;
  --byb-component-button-tracking: 0.018em;
  --byb-component-button-stroke: 1.5px;
  --byb-component-button-radius: 0;
  --byb-component-button-icon-size: 20px;

  --byb-component-faq-question-size: 26px;
  --byb-component-faq-question-line-height: 32px;
  --byb-component-faq-row-min-height: 80px;
  --byb-component-faq-row-padding-block: 24px;
  --byb-component-faq-triangle-width: 7px;
  --byb-component-faq-triangle-height: 12px;
  --byb-component-faq-triangle-inset: 10px;
  --byb-component-faq-triangle-gap: 16px;
  --byb-component-faq-answer-padding-block-end: 40px;
}

/* ------------------------------------------------------------------ base */

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

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--byb-color-surface-canvas);
  color: var(--byb-color-text-primary);
  font-family: var(--byb-type-family-body);
  font-size: var(--byb-type-main-text-size);
  line-height: var(--byb-type-main-text-line-height);
  -webkit-font-smoothing: antialiased;
}

img { max-inline-size: 100%; }

a { color: inherit; }

:focus-visible { outline: none; box-shadow: var(--byb-focus-ring); }

.byb-container {
  inline-size: 100%;
  max-inline-size: var(--byb-container-default);
  margin-inline: auto;
  padding-inline: var(--byb-space-page-gutter);
}

.sr-visually-hidden {
  block-size: 1px;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  inline-size: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
}

.sr-skip {
  background: var(--byb-color-tone-dark);
  color: var(--byb-color-tone-white);
  font-weight: var(--byb-type-weight-bold);
  inset-block-start: -100px;
  inset-inline-start: var(--byb-space-scale-4);
  padding: var(--byb-space-scale-3) var(--byb-space-scale-4);
  position: absolute;
  z-index: 10;
}

.sr-skip:focus { inset-block-start: var(--byb-space-scale-4); }

/* ------------------------------------------------------------------ Button (buttons.css) */

.byb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--byb-component-button-gap);
  min-block-size: var(--byb-component-button-height-md);
  padding: 0 var(--byb-component-button-padding-inline-md);
  font-family: var(--byb-type-family-body);
  font-size: var(--byb-component-button-font-size-md);
  font-weight: var(--byb-type-weight-medium);
  line-height: var(--byb-component-button-line-height);
  letter-spacing: var(--byb-component-button-tracking);
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  border: var(--byb-component-button-stroke) solid transparent;
  border-radius: var(--byb-component-button-radius);
  cursor: pointer;
  transition:
    background-color var(--byb-duration-fast) var(--byb-ease-default),
    border-color var(--byb-duration-fast) var(--byb-ease-default),
    color var(--byb-duration-fast) var(--byb-ease-default),
    box-shadow var(--byb-duration-fast) var(--byb-ease-default);
}

.byb-btn:focus-visible {
  outline: none;
  box-shadow: var(--byb-focus-ring);
  outline-offset: var(--byb-focus-ring-offset);
}

.byb-btn--sm {
  min-block-size: var(--byb-component-button-height-sm);
  padding-inline: var(--byb-component-button-padding-inline-sm);
  font-size: var(--byb-component-button-font-size-sm);
}

.byb-btn--md {
  min-block-size: var(--byb-component-button-height-md);
  padding-inline: var(--byb-component-button-padding-inline-md);
  font-size: var(--byb-component-button-font-size-md);
}

.byb-btn--lg {
  min-block-size: var(--byb-component-button-height-lg);
  padding-inline: var(--byb-component-button-padding-inline-lg);
  font-size: var(--byb-component-button-font-size-lg);
}

/* Normal: orange; hover a deeper orange. */
.byb-btn--normal {
  color: var(--byb-color-tone-white);
  background-color: var(--byb-color-tone-orange);
}

.byb-btn--normal:hover { background-color: var(--byb-color-tone-hover-orange); }

/* Second: white with orange words; hover a pale peach with deeper orange words. */
.byb-btn--second {
  color: var(--byb-color-tone-orange);
  background-color: var(--byb-color-tone-white);
}

.byb-btn--second:hover {
  color: var(--byb-color-tone-hover-orange);
  background-color: var(--byb-color-tone-very-light-tinted-orange);
}

/* Black: black; hover orange. */
.byb-btn--black {
  color: var(--byb-color-tone-white);
  background-color: var(--byb-color-tone-dark);
}

.byb-btn--black:hover { background-color: var(--byb-color-tone-orange); }

/* Outline: orange stroke and words; hover fills orange. */
.byb-btn--outline {
  color: var(--byb-color-tone-orange);
  background-color: transparent;
  border-color: var(--byb-color-tone-orange);
}

.byb-btn--outline:hover {
  color: var(--byb-color-tone-white);
  background-color: var(--byb-color-tone-orange);
  border-color: var(--byb-color-tone-orange);
}

.byb-btn:is(:disabled, [aria-disabled='true']) { cursor: not-allowed; }

.byb-btn:is(.byb-btn--normal, .byb-btn--black):is(:disabled, [aria-disabled='true']) {
  color: var(--byb-color-tone-white);
  background-color: var(--byb-color-tone-grey);
  border-color: transparent;
}

.byb-btn.byb-btn--outline:is(:disabled, [aria-disabled='true']) {
  color: var(--byb-color-tone-grey-text);
  background-color: transparent;
  border-color: var(--byb-color-tone-grey);
}

/* Orange ground: Black on Orange instead of Normal, Second instead of Outline. */
[data-ground='orange'] .byb-btn--normal:not(:disabled, [aria-disabled='true']) {
  color: var(--byb-color-tone-white);
  background-color: var(--byb-color-tone-dark);
}

[data-ground='orange'] .byb-btn--normal:not(:disabled, [aria-disabled='true']):hover { background-color: var(--byb-color-tone-brown-dark); }

[data-ground='orange'] .byb-btn--outline:not(:disabled, [aria-disabled='true']) {
  color: var(--byb-color-tone-orange);
  background-color: var(--byb-color-tone-white);
  border-color: transparent;
}

[data-ground='orange'] .byb-btn--outline:not(:disabled, [aria-disabled='true']):hover {
  color: var(--byb-color-tone-hover-orange);
  background-color: var(--byb-color-tone-very-light-tinted-orange);
}

.byb-btn__icon {
  block-size: var(--byb-component-button-icon-size);
  flex: none;
  inline-size: var(--byb-component-button-icon-size);
}

/* ------------------------------------------------------------------ Tag (tags.css) */

.byb-tag {
  align-items: center;
  background: var(--byb-color-tone-tinted-orange);
  border-radius: var(--byb-radius-pill);
  color: var(--byb-color-text-primary);
  display: inline-flex;
  font-size: var(--byb-type-scale-base);
  font-weight: var(--byb-type-weight-medium);
  line-height: 16px;
  min-block-size: 24px;
  padding: var(--byb-space-scale-1) var(--byb-space-scale-3);
  white-space: nowrap;
}

/* ------------------------------------------------------------------ Landing Kit (landing-kit.css) */

.byb-lk {
  --byb-lk-text: var(--byb-type-main-text-size);
  --byb-lk-small: var(--byb-type-scale-lg);
  --byb-lk-label: var(--byb-type-scale-base);
  --byb-lk-ink: var(--byb-color-text-primary);
  --byb-lk-ground: var(--byb-color-surface-canvas);
  --byb-lk-gap: var(--byb-space-scale-8);
  background: var(--byb-lk-ground);
  color: var(--byb-lk-ink);
  font-family: var(--byb-type-family-body);
  overflow-x: clip;
  padding-block: var(--byb-space-scale-10);
}

.byb-lk[data-surface="cream"] { --byb-lk-ground: var(--byb-color-tone-very-light-tinted-orange); }
.byb-lk[data-surface="blush"] { --byb-lk-ground: var(--byb-color-tone-tinted-orange); }
.byb-lk[data-surface="orange"] { --byb-lk-ground: var(--byb-color-tone-orange); }
.byb-lk[data-surface="black"] { --byb-lk-ground: var(--byb-color-tone-dark); --byb-lk-ink: var(--byb-color-text-inverse); }

@media (min-width: 990px) {
  .byb-lk { --byb-lk-gap: var(--byb-space-scale-16); padding-block: var(--byb-space-scale-16); }
}

/* lockup: the stacked Boldoa headline, each line sized from its own length (--byb-lockup-units) */

.byb-lockup-frame {
  container-type: inline-size;
  margin-block-end: var(--byb-space-scale-6);
  position: relative;
  text-align: center;
}

.byb-lockup {
  --byb-lockup-measure: min(100cqi, 24rem);
  --byb-lockup-min: 1.75rem;
  --byb-lockup-max: 5.5rem;
  --byb-lockup-glyph: 0.46;
  --byb-lockup-boldoa-glyph: 0.46;
  color: var(--byb-color-tone-orange);
  font-family: var(--byb-type-family-hero);
  font-weight: var(--byb-type-weight-regular);
  letter-spacing: 0.01em;
  line-height: 0.95;
  margin: 0;
  text-transform: uppercase;
}

.byb-lockup--xl { --byb-lockup-measure: min(100cqi, 31rem); --byb-lockup-min: 2.25rem; --byb-lockup-max: 8rem; }

.byb-lockup__art { display: inline-block; text-align: inherit; }

.byb-lockup__line {
  display: block;
  white-space: nowrap;
  font-size: clamp(var(--byb-lockup-min), calc(var(--byb-lockup-measure) / (var(--byb-lockup-units) * var(--byb-lockup-glyph))), var(--byb-lockup-max));
}

.byb-lockup__line--hand {
  --byb-lockup-glyph: 0.68;
  --byb-lockup-hand-ratio: 0.62;
  color: var(--byb-color-text-primary);
  font-family: var(--byb-type-family-hand);
  text-transform: uppercase;
  font-size: clamp(
    calc(var(--byb-lockup-min) * 0.75),
    min(
      calc(var(--byb-lockup-measure) / (var(--byb-lockup-units) * var(--byb-lockup-glyph))),
      calc(var(--byb-lockup-hand-ratio) * clamp(var(--byb-lockup-min), calc(var(--byb-lockup-measure) / (var(--byb-lockup-ref-units, var(--byb-lockup-units)) * var(--byb-lockup-boldoa-glyph))), var(--byb-lockup-max)))
    ),
    var(--byb-lockup-max)
  );
  letter-spacing: 0.02em;
  line-height: 1.15;
}

.byb-lockup__crown {
  block-size: auto;
  display: block;
  inline-size: min(11rem, 45%);
  margin: 0 auto calc(var(--byb-space-scale-2) * -1);
  position: relative;
  z-index: 1;
}

.byb-lockup[data-tone="ink"] { color: var(--byb-color-text-primary); }
.byb-lockup[data-tone="inverse"] { color: var(--byb-color-text-inverse); }
.byb-lockup[data-tone="inverse"] .byb-lockup__line--hand { color: var(--byb-color-text-primary); }

@media (min-width: 750px) {
  .byb-lockup-frame[data-align="start"] { text-align: start; }
  .byb-lockup-frame[data-align="start"] .byb-lockup__crown { margin-inline: 30% 0; }
}

/* shared copy */

.byb-lk__subhead {
  font-size: var(--byb-type-scale-xl);
  font-weight: var(--byb-type-weight-bold);
  line-height: 1.35;
  margin: 0 0 var(--byb-space-scale-4);
}

.byb-lk__body { font-size: var(--byb-lk-text); line-height: 1.6; }
.byb-lk__body p { margin: 0 0 var(--byb-space-scale-4); }
.byb-lk__body p:last-child { margin-block-end: 0; }
.byb-lk__body strong,
.byb-lk__subhead strong { font-weight: var(--byb-type-weight-bold); }

.byb-lk__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--byb-space-scale-3);
  justify-content: center;
  margin-block-start: var(--byb-space-scale-6);
}

@media (max-width: 749px) {
  .byb-lk-hero__copy { text-align: center; }
}

@media (min-width: 750px) {
  .byb-lk__actions { justify-content: flex-start; }
  .byb-lk__subhead { font-size: 1.375rem; }
}

/* landing-hero */

.byb-lk-hero { padding-block-start: var(--byb-space-scale-6); }

.byb-lk-hero__inner {
  align-items: center;
  display: grid;
  gap: var(--byb-lk-gap);
}

@media (min-width: 750px) {
  .byb-lk-hero__inner { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); }
}

/* landing-cards */

.byb-lk-cards__inner { display: grid; gap: var(--byb-lk-gap); }

.byb-lk-cards__intro { display: grid; gap: var(--byb-space-scale-4); margin-inline: auto; max-inline-size: 48rem; inline-size: 100%; text-align: center; }
.byb-lk-cards__intro > .byb-lockup-frame { margin-block-end: 0; }

.byb-lk-cards__note {
  align-items: center;
  display: flex;
  font-size: var(--byb-lk-text);
  gap: var(--byb-space-scale-3);
  justify-content: center;
  line-height: 1.5;
  margin: 0;
}

.byb-lk-cards__grid {
  display: grid;
  gap: var(--byb-space-scale-12) var(--byb-space-scale-4);
  grid-template-columns: minmax(0, 1fr);
  list-style: none;
  margin: 0;
  padding: var(--byb-space-scale-12) 0 0;
}

.byb-lk-card {
  background: var(--byb-color-tone-tinted-orange);
  border-radius: var(--byb-radius-xl);
  display: flex;
  flex-direction: column;
  padding: var(--byb-space-scale-12) var(--byb-space-scale-5) var(--byb-space-scale-8);
  position: relative;
}

.byb-lk[data-surface="blush"] .byb-lk-card { background: var(--byb-color-tone-white); }

.byb-lk-card__doodle {
  block-size: 5rem;
  inline-size: auto;
  inset-block-start: -3rem;
  inset-inline-start: var(--byb-space-scale-4);
  max-inline-size: 8rem;
  object-fit: contain;
  object-position: left bottom;
  position: absolute;
}

.byb-lk-card__title {
  color: var(--byb-color-text-primary);
  font-size: 1.375rem;
  font-weight: var(--byb-type-weight-bold);
  line-height: 1.15;
  margin: 0 0 var(--byb-space-scale-3);
}

.byb-lk-card__body { color: var(--byb-color-text-primary); font-size: var(--byb-lk-small); line-height: 1.5; margin: 0; }

.byb-lk-cards .byb-lk__actions { justify-content: center; }

@media (min-width: 750px) {
  .byb-lk-cards__grid { grid-template-columns: repeat(var(--byb-lk-card-columns, 2), minmax(0, 1fr)); }
}

@media (min-width: 990px) {
  .byb-lk-cards__grid { --byb-lk-card-columns: 3; }
  .byb-lk-cards__grid[data-count="2"],
  .byb-lk-cards__grid[data-count="4"] { --byb-lk-card-columns: 2; }
}

/* landing-art-cta */

.byb-lk-art-cta__inner {
  align-items: center;
  display: grid;
  gap: var(--byb-lk-gap);
}

.byb-lk-art-cta__drawing {
  block-size: auto;
  display: block;
  inline-size: 100%;
  margin-inline: auto;
  max-inline-size: 26rem;
}

.byb-lk-art-cta__card {
  background: var(--byb-color-tone-white);
  border-radius: var(--byb-radius-xl);
  color: var(--byb-color-text-primary);
  margin-block-start: var(--byb-space-scale-8);
  padding: var(--byb-space-scale-12) var(--byb-space-scale-6) var(--byb-space-scale-8);
  position: relative;
  text-align: center;
}

.byb-lk-art-cta__badge {
  block-size: 4.5rem;
  inline-size: auto;
  inset-block-start: -2.75rem;
  inset-inline-start: 50%;
  position: absolute;
  transform: translateX(-50%);
}

.byb-lk-art-cta__title {
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem);
  font-weight: var(--byb-type-weight-bold);
  line-height: 1.25;
  margin: 0 0 var(--byb-space-scale-3);
}

.byb-lk-art-cta__body { font-size: var(--byb-lk-text); line-height: 1.5; margin: 0; }
.byb-lk-art-cta__card .byb-lk__actions { justify-content: center; }

@media (min-width: 750px) {
  .byb-lk-art-cta__inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .byb-lk-art-cta__card { margin-block-start: 0; padding-inline: var(--byb-space-scale-10); }
}

/* ------------------------------------------------------------------ Section heading (separator.css) */

.byb-separator {
  font-family: var(--byb-type-family-body);
  font-size: 28px;
  font-weight: var(--byb-type-weight-bold);
  line-height: 40px;
  margin: 0 0 var(--byb-space-scale-8);
  text-align: center;
}

@media (min-width: 750px) {
  .byb-separator { font-size: 36px; line-height: 56px; }
}

/* ------------------------------------------------------------------ FAQ (faq.css), drawn on <details> */

.byb-faqs {
  border-block-start: var(--byb-stroke-thin) solid var(--byb-color-tone-dark);
  display: flex;
  flex-direction: column;
}

.byb-faq { border-block-end: var(--byb-stroke-thin) solid var(--byb-color-tone-dark); }

.byb-faq__header {
  align-items: flex-start;
  color: var(--byb-color-tone-dark);
  column-gap: var(--byb-component-faq-triangle-gap);
  cursor: pointer;
  display: flex;
  font-size: var(--byb-component-faq-question-size);
  font-weight: var(--byb-type-weight-bold);
  line-height: var(--byb-component-faq-question-line-height);
  list-style: none;
  min-block-size: var(--byb-component-faq-row-min-height);
  padding-block: var(--byb-component-faq-row-padding-block);
  padding-inline: var(--byb-component-faq-triangle-inset) 0;
  transition: color var(--byb-duration-fast) var(--byb-ease-default);
}

.byb-faq__header::-webkit-details-marker { display: none; }

.byb-faq__header:hover,
.byb-faq[open] .byb-faq__header { color: var(--byb-color-tone-orange); }

.byb-faq__header:focus-visible { box-shadow: inset var(--byb-focus-ring); outline: none; }

.byb-faq__question { flex: 1; min-inline-size: 0; }

.byb-faq__icon {
  background: currentColor;
  block-size: var(--byb-component-faq-triangle-height);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
  flex: 0 0 var(--byb-component-faq-triangle-width);
  inline-size: var(--byb-component-faq-triangle-width);
  margin-block-start: calc((var(--byb-component-faq-question-line-height) - var(--byb-component-faq-triangle-height)) / 2);
  transition: transform var(--byb-duration-normal) var(--byb-ease-default);
}

.byb-faq[open] .byb-faq__icon { transform: rotate(90deg); }

.byb-faq__answer-inner {
  font-size: var(--byb-type-main-text-size);
  line-height: var(--byb-type-main-text-line-height);
  padding-block-end: var(--byb-component-faq-answer-padding-block-end);
  padding-inline-start: calc(var(--byb-component-faq-triangle-inset) + var(--byb-component-faq-triangle-width) + var(--byb-component-faq-triangle-gap));
}

.byb-faq__answer-inner p { margin: 0 0 var(--byb-space-scale-4); }
.byb-faq__answer-inner p:last-child { margin-block-end: 0; }
.byb-faq__answer-inner a { text-decoration-color: var(--byb-color-tone-orange); text-decoration-thickness: 2px; text-underline-offset: 0.2em; }

@media (prefers-reduced-motion: reduce) {
  .byb-faq__header,
  .byb-faq__icon { transition: none; }
}

/* ================================================================== Spike Recorder page */

/* header */

.sr-header {
  background: var(--byb-color-tone-white);
  position: relative;
  z-index: 2;
}

.sr-header__inner {
  align-items: center;
  display: flex;
  gap: var(--byb-space-scale-6);
  justify-content: space-between;
  min-block-size: 76px;
}

.sr-header__brand { display: inline-flex; flex: none; }
.sr-header__brand img { block-size: 52px; inline-size: auto; display: block; }

.sr-nav { display: none; }

.sr-nav a {
  font-size: var(--byb-type-scale-xl);
  font-weight: var(--byb-type-weight-bold);
  text-decoration: none;
  text-underline-offset: 0.3em;
}

.sr-nav a:hover { text-decoration: underline 2px var(--byb-color-tone-orange); }

@media (min-width: 900px) {
  .sr-header__inner { min-block-size: 112px; }
  .sr-header__brand img { block-size: 76px; }
  .sr-nav { align-items: center; display: flex; gap: var(--byb-space-scale-8); margin-inline-start: auto; }
}

/* hero */

.sr-hero__lede { max-inline-size: 34rem; }

.sr-hero__platforms {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  font-size: var(--byb-type-scale-lg);
  gap: var(--byb-space-scale-2) var(--byb-space-scale-3);
  justify-content: center;
  line-height: 22px;
  margin: var(--byb-space-scale-6) 0 0;
}

.sr-hero__glyphs { display: inline-flex; gap: var(--byb-space-scale-2); }
.sr-hero__glyphs img { block-size: 20px; inline-size: 20px; display: block; }

.sr-hero__platforms a {
  font-weight: var(--byb-type-weight-bold);
  text-decoration: underline 2px var(--byb-color-tone-orange);
  text-underline-offset: 0.3em;
}

.sr-hero__platforms a:hover { text-decoration-color: currentColor; }

@media (min-width: 750px) {
  .sr-hero__platforms { justify-content: flex-start; }
}

/* The hero art: a screenshot of the app over two round grounds (the kit heroes' round cut-out),
   the orange disc low on the copy side and the blush disc behind the screen. */
.sr-hero__art {
  align-items: center;
  aspect-ratio: 5 / 4;
  display: grid;
  inline-size: 100%;
  justify-items: center;
  margin: 0 auto;
  max-inline-size: 40rem;
  position: relative;
}

.sr-hero__art::before,
.sr-hero__art::after {
  aspect-ratio: 1;
  border-radius: 50%;
  content: "";
  position: absolute;
}

.sr-hero__art::before {
  background: var(--byb-color-tone-tinted-orange);
  inline-size: 74%;
  inset-block-start: 2%;
  inset-inline-end: 3%;
}

.sr-hero__art::after {
  background: var(--byb-color-tone-orange);
  inline-size: 34%;
  inset-block-end: 3%;
  inset-inline-start: 6%;
}

.sr-hero__image {
  inline-size: 94%;
  position: relative;
  z-index: 1;
}

/* A screenshot of the app: drawn like a window, with the app's own 2 px black line. */
.sr-screen {
  background: var(--byb-color-tone-white);
  block-size: auto;
  border: var(--byb-stroke-medium) solid var(--byb-color-tone-dark);
  border-radius: var(--byb-radius-xl);
  box-shadow: 0 2px 32px rgb(0 0 0 / 12%);
  display: block;
  max-inline-size: 100%;
}

/* get the app */

.sr-apps__head { display: grid; gap: var(--byb-lk-gap); align-items: center; }

.sr-web-card {
  background: var(--byb-color-tone-white);
  border-radius: var(--byb-radius-xl);
  color: var(--byb-color-text-primary);
  display: grid;
  gap: var(--byb-space-scale-3);
  justify-items: center;
  padding: var(--byb-space-scale-16) var(--byb-space-scale-6) var(--byb-space-scale-8);
  position: relative;
  text-align: center;
  margin-block-start: var(--byb-space-scale-10);
}

.sr-web-card__icon {
  block-size: 96px;
  border-radius: 22px;
  box-shadow: 0 2px 32px rgb(0 0 0 / 8%);
  inline-size: 96px;
  inset-block-start: -48px;
  inset-inline-start: 50%;
  position: absolute;
  transform: translateX(-50%);
}

.sr-web-card__title {
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem);
  font-weight: var(--byb-type-weight-bold);
  line-height: 1.25;
  margin: 0;
}

.sr-web-card__body { font-size: var(--byb-type-main-text-size); line-height: 1.5; margin: 0; max-inline-size: 28rem; }
.sr-web-card .byb-btn { margin-block-start: var(--byb-space-scale-3); }
.sr-web-card__meta { color: var(--byb-color-text-secondary); font-size: var(--byb-type-scale-base); line-height: 20px; margin: 0; }

.sr-platforms {
  display: grid;
  gap: var(--byb-space-scale-12) var(--byb-space-scale-4);
  grid-template-columns: minmax(0, 1fr);
  list-style: none;
  margin: 0;
  padding: var(--byb-space-scale-10) 0 0;
}

.sr-platform {
  background: var(--byb-color-tone-white);
  border-radius: var(--byb-radius-xl);
  display: flex;
  flex-direction: column;
  padding: var(--byb-space-scale-12) var(--byb-space-scale-5) var(--byb-space-scale-5);
  position: relative;
  scroll-margin-top: var(--byb-space-scale-8);
}

.sr-platform__icon {
  align-items: center;
  background: var(--byb-color-tone-white);
  border: var(--byb-stroke-medium) solid var(--byb-color-tone-dark);
  border-radius: 50%;
  block-size: 64px;
  display: flex;
  inline-size: 64px;
  inset-block-start: -32px;
  inset-inline-start: var(--byb-space-scale-5);
  justify-content: center;
  position: absolute;
}

.sr-platform__icon img { block-size: 28px; inline-size: 28px; display: block; }

.sr-platform__mine {
  display: none;
  inset-block-start: var(--byb-space-scale-4);
  inset-inline-end: var(--byb-space-scale-4);
  position: absolute;
}

.sr-platform[data-mine] { box-shadow: 0 0 0 3px var(--byb-color-tone-dark); }
.sr-platform[data-mine] .sr-platform__mine { display: inline-flex; }

.sr-platform__title {
  font-size: 1.375rem;
  font-weight: var(--byb-type-weight-bold);
  line-height: 1.15;
  margin: 0 0 var(--byb-space-scale-2);
}

.sr-platform__meta { color: var(--byb-color-text-secondary); font-size: var(--byb-type-scale-lg); line-height: 22px; margin: 0; }

.sr-platform__actions { display: grid; gap: var(--byb-space-scale-2); margin-block-start: auto; padding-block-start: var(--byb-space-scale-6); }
.sr-platform__actions .byb-btn { inline-size: 100%; }

.sr-platform__soon { color: var(--byb-color-text-secondary); font-size: var(--byb-type-scale-base); line-height: 20px; margin: 0; padding-block: var(--byb-space-scale-2) 0; text-align: center; }

.sr-platform__note { font-size: var(--byb-type-scale-lg); line-height: 22px; margin: var(--byb-space-scale-2) 0 0; }

/* As many cards in a row as fit, so the grid holds however many cards channels.json lists. */
@media (min-width: 750px) {
  .sr-platforms { grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); }
}

@media (min-width: 990px) {
  .sr-apps__head { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); }
  .sr-web-card { margin-block-start: 0; }
  .sr-platforms { padding-block-start: var(--byb-space-scale-16); }
}

/* four views (landing-cards, with the app's own tab icons in the doodle place) */

.sr-views .sr-view__icon {
  block-size: 3.5rem;
  inset-block-start: -1.75rem;
}

.sr-gallery {
  display: grid;
  gap: var(--byb-space-scale-8) var(--byb-space-scale-6);
  grid-template-columns: minmax(0, 1fr);
  list-style: none;
  margin: 0;
  padding: 0;
}

.sr-gallery figure { margin: 0; }

.sr-gallery figcaption {
  color: var(--byb-color-text-secondary);
  font-size: var(--byb-type-scale-lg);
  line-height: 22px;
  margin-block-start: var(--byb-space-scale-3);
  text-align: center;
}

@media (min-width: 750px) {
  .sr-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}


/* FAQ */

.sr-faq { padding-block: var(--byb-space-scale-12); }
.sr-faq .byb-container { max-inline-size: 960px; }

@media (min-width: 990px) {
  .sr-faq { padding-block: var(--byb-space-scale-16) 96px; }
}

/* footer */

.sr-footer {
  background: var(--byb-color-tone-dark);
  color: var(--byb-color-text-inverse);
}

.sr-footer__inner {
  align-items: center;
  display: grid;
  gap: var(--byb-space-scale-8);
  justify-items: center;
  padding-block: var(--byb-space-scale-12);
  text-align: center;
}

.sr-footer__tagline {
  font-family: var(--byb-type-family-hero);
  font-size: 32px;
  letter-spacing: 0.01em;
  line-height: 1;
  margin: 0;
  text-transform: uppercase;
}

.sr-footer__tagline span { color: var(--byb-color-tone-orange); }

.sr-footer nav { display: flex; flex-wrap: wrap; gap: var(--byb-space-scale-3) var(--byb-space-scale-8); justify-content: center; }
.sr-footer nav a { font-size: var(--byb-type-scale-xl); text-decoration: none; }
.sr-footer nav a:hover { text-decoration: underline 2px var(--byb-color-tone-orange); text-underline-offset: 0.3em; }

.sr-footer__legal {
  background: var(--byb-color-tone-grey);
  color: var(--byb-color-text-primary);
  font-size: var(--byb-type-scale-lg);
  line-height: 22px;
  padding-block: var(--byb-space-scale-5);
}

@media (min-width: 750px) {
  .sr-footer__inner { grid-template-columns: auto 1fr; justify-items: start; text-align: start; }
  .sr-footer nav { justify-content: flex-end; justify-self: end; }
  .sr-footer__tagline { font-size: 42px; }
}