body:is(.landing-page, .product-page) {
  --landing-paper: var(--color-paper);
  --landing-surface: var(--color-surface);
  --landing-surface-raised: var(--color-surface-raised);
  --landing-ink: var(--color-ink);
  --landing-ink-soft: var(--color-ink-soft);
  --landing-muted: var(--color-muted);
  --landing-rule: var(--color-rule);
  --landing-rule-strong: var(--color-rule-strong);
  --landing-accent: var(--color-accent);
  --landing-focus: var(--color-focus);
  --landing-control-radius: var(--radius-round);
  --landing-overlay-radius: var(--radius-medium);
  --landing-frame: calc(var(--shell-width) + 2 * var(--page-gutter));
  --landing-gutter: var(--page-gutter);
  --landing-z-menu: 300;
  --landing-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --header-height: 64px;
  --page-gutter: clamp(24px, 5vw, 72px);

  min-height: 100dvh;
  margin: 0;
  padding: 0;
  background: var(--landing-paper);
  color: var(--landing-ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

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

.landing-page { line-height: 1.5; }

.landing-page :focus-visible {
  outline: 3px solid var(--landing-focus);
  outline-offset: 3px;
}

.landing-page h1,
.landing-page h2,
.landing-page h3,
.landing-page p,
.landing-page figure {
  margin: 0;
}

/* One type scale for the public pages, taken from the home page (listening-home.css, which
   scales its supporting type by .75): Newsreader display type, a small tracked eyebrow, compact
   pill buttons. The home page sets its own sizes per section at a higher specificity. */
.landing-page h1,
.landing-page h2,
.landing-page h3 {
  color: var(--landing-ink);
  font-family: var(--font-display);
  font-weight: 400;
  text-wrap: balance;
}

.landing-page h1 {
  font-size: clamp(2.75rem, 5.25vw, 4.75rem);
  line-height: 0.98;
  letter-spacing: -0.065em;
}

.landing-page h2 {
  font-size: clamp(2rem, 3.675vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.055em;
}

.landing-page h3 {
  font-size: calc(34px * 0.75);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.landing-page p {
  color: var(--landing-ink-soft);
  line-height: 1.55;
  text-wrap: pretty;
}

.landing-shell {
  position: relative;
  width: 100%;
  min-width: 0;
  overflow-x: clip;
  background: var(--landing-paper);
}

.landing-shell > main:focus {
  outline: 0;
}

.landing-skip-link {
  position: fixed;
  z-index: calc(var(--landing-z-menu) + 1);
  inset-block-start: 0.75rem;
  inset-inline-start: 0.75rem;
  padding: 0.65rem 0.9rem;
  border-radius: var(--landing-control-radius);
  background: var(--landing-ink);
  color: var(--landing-surface);
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 150ms var(--landing-ease-out);
}

.landing-skip-link:focus {
  transform: translateY(0);
}

.landing-frame {
  width: min(100%, var(--landing-frame));
  margin-inline: auto;
  padding-inline:
    max(var(--landing-gutter), env(safe-area-inset-left))
    max(var(--landing-gutter), env(safe-area-inset-right));
}

/* Buttons and text links are the shared controls (controls.css); public pages give them the
   home page's compact geometry. */
.landing-page .landing-button {
  min-height: 48px;
  padding: 12px 25px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 400;
}

.landing-page .landing-text-link {
  font-size: 13px;
  font-weight: 400;
  white-space: nowrap;
  transition: color 150ms var(--landing-ease-out);
}

.landing-page .landing-kicker {
  font: 400 max(9px, calc(11px * 0.75)) / 1.65 var(--font-body);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.landing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.landing-teacher-image img,
.landing-page-hero__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  outline: 1px solid light-dark(rgb(0 0 0 / 0.1), rgb(255 255 255 / 0.1));
  outline-offset: -1px;
}

.landing-method,
.landing-loop,
.landing-microphone,
.landing-split-note,
.landing-adjustments,
.landing-teacher-process,
.landing-teacher-image,
.landing-workflow,
.landing-access,
.landing-final-cta {
  padding-block: clamp(5rem, 10vw, 9rem);
}

.landing-section-copy {
  max-width: 44rem;
}

.landing-method .landing-text-link {
  margin-block-start: 1.25rem;
}

.landing-section-copy > p,
.landing-page-hero > p,
.landing-page-hero__copy > p,
.landing-teacher-image > div > p,
.landing-access__intro > p,
.landing-final-cta > p {
  max-width: 38rem;
  margin-block-start: 1.25rem;
  font-size: 1.12rem;
}

.landing-method {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(28rem, 1.18fr);
  gap: clamp(3rem, 8vw, 8rem);
}

.landing-method__steps,
.landing-teacher-process ol,
.landing-workflow__steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.landing-method__steps {
  border-block-start: 1px solid var(--landing-rule-strong);
}

.landing-method__steps li {
  padding-block: 1.5rem;
  border-block-end: 1px solid var(--landing-rule);
}

.landing-method__steps p,
.landing-loop article p,
.landing-adjustments__grid p,
.landing-teacher-process li p,
.landing-workflow__steps li div p,
.landing-access__choices p {
  margin-block-start: 0.55rem;
}

.landing-page-hero {
  min-height: min(42rem, calc(100dvh - 4.5rem));
  padding-block: clamp(48px, 7vw, 96px);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.landing-page-hero h1 {
  max-width: 18ch;
  margin-block-start: 1.25rem;
}

.landing-page-hero > .landing-button,
.landing-page-hero > .landing-actions,
.landing-page-hero__copy > .landing-actions {
  margin-block-start: 1.75rem;
}

.landing-page-hero--teacher {
  background: var(--landing-paper);
}

.landing-page-hero--media {
  min-height: min(44rem, calc(100dvh - 4.5rem));
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(28rem, 1.12fr);
  align-items: center;
  gap: clamp(3rem, 7vw, 7rem);
}

.landing-page-hero--media h1 {
  max-width: 14ch;
}

.landing-page-hero__copy {
  max-width: 41rem;
}

.landing-page-hero__copy > p:not(.landing-kicker) {
  max-width: 34ch;
  font-size: max(9px, calc(clamp(17px, 1.8vw, 27px) * 0.75));
  line-height: 1.3;
}

/* The photograph sits in an arch. */
.landing-page-hero__media {
  height: clamp(25rem, 38vw, 34rem);
  overflow: hidden;
  border-radius: 48% 48% 6px 6px / 18% 18% 6px 6px;
  background: var(--landing-surface-raised);
  box-shadow: 0 24px 60px -40px rgb(75 39 12 / 0.4);
}

.landing-page-hero__media img {
  object-position: center top;
}

.landing-loop {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) repeat(2, minmax(0, 0.9fr));
  align-items: stretch;
}

.landing-loop article {
  min-height: 25rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-block: 1px solid var(--landing-rule);
  border-inline-end: 1px solid var(--landing-rule);
  border-radius: 20px;
  background: var(--landing-surface);
  color: var(--landing-ink);
}

.landing-loop article:first-child {
  border-inline-start: 1px solid var(--landing-rule);
}

.landing-loop article h2 {
  margin-block: auto 2rem;
  font-size: 28px;
}

.landing-loop__feature {
  background: var(--landing-surface-raised) !important;
}

.landing-microphone,
.landing-split-note {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(20rem, 0.9fr);
  gap: clamp(3rem, 10vw, 10rem);
  align-items: center;
  border-block: 1px solid var(--landing-rule);
}

.landing-microphone > div p,
.landing-microphone aside p,
.landing-split-note > div p,
.landing-split-note aside p {
  margin-block-start: 1rem;
  font-size: 1.1rem;
}

.landing-microphone aside,
.landing-split-note aside {
  padding: 2rem;
  border-inline-start: 3px solid var(--landing-accent);
  background: var(--landing-surface);
}

.landing-microphone aside strong,
.landing-split-note aside strong {
  font-size: 1.15rem;
}

.landing-adjustments__grid,
.landing-access__choices {
  margin-block-start: 3.5rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 48px;
  border-block-start: 1px solid var(--landing-rule-strong);
}

.landing-adjustments__grid article,
.landing-access__choices article {
  min-height: 11rem;
  padding: 24px 0;
  border-block-end: 1px solid var(--landing-rule);
}

.landing-adjustments__grid article:nth-child(odd),
.landing-access__choices article:nth-child(odd) {
  border-inline-end: 1px solid var(--landing-rule);
}

.landing-final-cta {
  padding-block: var(--section-space);
  border-block-start: 1px solid var(--landing-rule);
  text-align: center;
}

.landing-final-cta h2 {
  max-width: 26ch;
}

.landing-final-cta > * {
  margin-inline: auto;
}

.landing-final-cta .landing-button {
  margin-block-start: 1.75rem;
}

.landing-teacher-process {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(30rem, 1.15fr);
  gap: clamp(3rem, 8vw, 8rem);
}

.landing-teacher-process ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-block-start: 1px solid var(--landing-rule-strong);
}

.landing-teacher-process li {
  min-height: 13rem;
  padding: 1.5rem;
  border-block-end: 1px solid var(--landing-rule);
}

.landing-teacher-process li:nth-child(odd) {
  border-inline-end: 1px solid var(--landing-rule);
}

.landing-teacher-image {
  display: grid;
  grid-template-columns: minmax(28rem, 1.2fr) minmax(0, 0.8fr);
  gap: clamp(3rem, 9vw, 9rem);
  align-items: center;
  border-block: 1px solid var(--landing-rule);
  background: var(--landing-surface);
}

.landing-teacher-image figure {
  height: clamp(24rem, 36vw, 32rem);
  overflow: hidden;
}

.landing-teacher-image img {
  object-position: center;
}

.landing-teacher-image .landing-text-link {
  margin-block-start: 1.25rem;
}

.landing-workflow {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(30rem, 1.28fr);
  align-items: start;
  gap: clamp(3rem, 8vw, 8rem);
}

.landing-workflow__steps {
  border-block-start: 1px solid var(--landing-rule-strong);
}

.landing-workflow__steps li {
  min-height: 8.5rem;
  padding-block: 1.65rem;
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr);
  align-items: start;
  gap: clamp(1.5rem, 4vw, 3rem);
  border-block-end: 1px solid var(--landing-rule);
}

.landing-workflow__steps li:nth-child(4) {
  margin-block-start: 1rem;
  border-block-start: 1px solid var(--landing-rule-strong);
}

.landing-workflow__steps li:nth-child(n + 4) {
  padding-inline: clamp(1rem, 3vw, 3rem) 1rem;
  background: linear-gradient(90deg, color-mix(in oklch, var(--landing-accent) 7%, transparent), transparent 74%);
}

.landing-workflow__persona {
  color: var(--landing-focus) !important;
  font-size: 0.8rem;
  font-weight: 700;
}

.landing-access__intro {
  max-width: 50rem;
}

.landing-social {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1.1rem 0 0;
  padding: 0;
  list-style: none;
}

.landing-social a {
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: .75rem;
  color: var(--landing-ink);
  transition: background .15s, color .15s;
}

.landing-social a:hover,
.landing-social a:focus-visible {
  background: var(--landing-rule);
}

@media (hover: hover) and (pointer: fine) {
  .landing-text-link:hover {
    color: var(--landing-focus);
  }

  .landing-button:hover {
    border-color: var(--landing-accent);
    background: var(--landing-accent);
    color: var(--landing-surface);
  }

  .landing-button--quiet:hover {
    border-color: var(--landing-ink);
    background: var(--landing-surface-raised);
    color: var(--landing-ink);
  }

}

@media (max-width: 47.999rem) {
  body.landing-page {
    --landing-gutter: 1.25rem;
  }

  .landing-method,
  .landing-loop,
  .landing-microphone,
  .landing-split-note,
  .landing-teacher-process,
  .landing-teacher-image,
  .landing-workflow,
  .landing-access {
    grid-template-columns: minmax(0, 1fr);
  }

  .landing-method,
  .landing-loop,
  .landing-microphone,
  .landing-split-note,
  .landing-adjustments,
  .landing-teacher-process,
  .landing-teacher-image,
  .landing-workflow,
  .landing-access,
  .landing-final-cta {
    padding-block: 4.5rem;
  }

  .landing-method,
  .landing-teacher-process,
  .landing-teacher-image,
  .landing-microphone,
  .landing-split-note {
    gap: 2.5rem;
  }

  .landing-adjustments__grid,
  .landing-teacher-process ol,
  .landing-access__choices {
    grid-template-columns: minmax(0, 1fr);
  }

  .landing-adjustments__grid article,
  .landing-adjustments__grid article:nth-child(odd),
  .landing-adjustments__grid article:nth-child(even),
  .landing-teacher-process li,
  .landing-teacher-process li:nth-child(odd),
  .landing-access__choices article,
  .landing-access__choices article:nth-child(odd),
  .landing-access__choices article:nth-child(even) {
    grid-column: auto;
    padding: 1.5rem 0;
    border-inline: 0;
  }

  .landing-loop article {
    min-height: 20rem;
    border-block-start: 0;
    border-inline-start: 1px solid var(--landing-rule);
  }

  .landing-loop article:first-child {
    border-block-start: 1px solid var(--landing-rule);
  }

  .landing-page-hero {
    min-height: calc(100dvh - 4.25rem);
    padding-block: 4rem;
  }

  .landing-page-hero--media {
    min-height: 0;
    padding-block: 3rem;
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
  }

  .landing-page-hero h1 {
    max-width: none;
  }

  .landing-page-hero--teacher {
    background: var(--landing-paper);
  }

  .landing-page-hero__media {
    height: min(58vw, 18rem);
  }

  .landing-teacher-image figure {
    height: min(70vw, 22rem);
  }

  .landing-workflow {
    gap: 2.5rem;
  }

  .landing-workflow__steps li,
  .landing-workflow__steps li:nth-child(n + 4) {
    min-height: 0;
    padding: 1.5rem 0;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.5rem;
    background: transparent;
  }

  .landing-workflow__steps li:nth-child(4) {
    margin-block-start: 0.75rem;
  }

  .landing-microphone aside,
  .landing-split-note aside {
    border-block-start: 3px solid var(--landing-accent);
    border-inline-start: 0;
  }

}

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

  .landing-button:active {
    transform: none;
  }
}

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

/* Center the constrained heading and text blocks as well as their text.
   The page-level heading reset outranks the section's child selector. */
.landing-page .landing-final-cta > :is(h2, p) { margin-inline: auto; }
.landing-page .landing-final-cta > h2 { text-wrap: balance; }

/* Technology: a compact overview, followed by an illustrated explanation. */
.audio-technology { padding-block: clamp(4rem, 8vw, 8rem); }
.audio-technology > .technology-intro { display: grid; grid-template-columns: 1.1fr 1fr; align-items: end; gap: 3rem; margin-block-end: 3rem; }
.technology-intro h2 { max-width: 15ch; margin-block-start: .75rem; text-wrap: balance; }
.technology-intro > p { max-width: 40rem; margin: 0; font-size: 1.12rem; text-wrap: pretty; }
.technology-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; }
.technology-capability { display: flex; flex-direction: column; min-width: 0; padding: 1.75rem; border-radius: 1.5rem; background: var(--landing-surface); }
.technology-capability__copy { min-width: 0; }
.technology-capability__label { display: flex; align-items: center; flex-wrap: wrap; gap: .65rem; margin-block-end: 1rem; }
.technology-capability__label > p { color: var(--landing-muted); font-size: .75rem; font-weight: 600; line-height: 1.4; letter-spacing: .015em; }
.technology-capability h3 { font-size: clamp(1.35rem, 2.2vw, 1.7rem); line-height: 1.15; letter-spacing: -.035em; margin: 0 0 1rem; text-wrap: balance; }
.technology-capability p { margin: 0; text-wrap: pretty; }
.technology-capability__visual { display: grid; align-items: center; padding-block-start: 2rem; margin-block-start: auto; }
.technology-diagram { display: block; width: 100%; height: auto; overflow: visible; }
.technology-diagram text { fill: var(--landing-muted); font: 12px system-ui, sans-serif; }
.technology-diagram path { stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.technology-diagram .diagram-guide { stroke: var(--landing-rule); }
.technology-diagram .diagram-ink { stroke: var(--landing-ink); }
.technology-diagram .diagram-primary { stroke: light-dark(#47692e, #b0cc88); }
.technology-diagram .diagram-secondary { stroke: light-dark(#a65124, #edb48b); }
.technology-diagram .diagram-soft { fill: light-dark(#47692e, #b0cc88); opacity: .1; }
.technology-diagram .diagram-dot { fill: light-dark(#47692e, #b0cc88); }
.technology-preview-label { display: inline-flex; align-items: center; min-height: 1.6rem; border: 1px solid var(--landing-rule-strong); border-radius: 1rem; padding: .2rem .6rem; color: var(--landing-ink-soft); font-size: .7rem; font-weight: 600; white-space: nowrap; }
.technology-capability--wide { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.technology-capability--wide .technology-capability__visual { margin: 0; padding: 0; max-width: 28rem; justify-self: center; width: 100%; }
.technology-grid--detailed { display: block; }
.technology-grid--detailed .technology-capability { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 6vw, 6rem); align-items: center; padding: 3.5rem 0; border-radius: 0; border-top: 1px solid var(--landing-rule); background: transparent; }
.technology-grid--detailed .technology-capability:nth-child(even) .technology-capability__copy { grid-column: 2; grid-row: 1; }
.technology-grid--detailed .technology-capability:nth-child(even) .technology-capability__visual { grid-column: 1; grid-row: 1; }
.technology-grid--detailed h3 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
.technology-grid--detailed .technology-capability__benefit { color: var(--landing-ink); font-size: 1.2rem; margin-block-end: 1rem; }
.technology-grid--detailed .technology-capability__use { margin-block-start: 1rem; }
.technology-grid--detailed .technology-capability__visual { margin: 0; padding: 2rem; border-radius: 1.5rem; background: var(--landing-surface); max-width: none; }
@media (max-width: 1000px) {
  .technology-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .audio-technology > .technology-intro { gap: 2rem; }
}
@media (max-width: 650px) {
  .audio-technology > .technology-intro, .technology-grid, .technology-capability--wide,
  .technology-grid--detailed .technology-capability { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
  .technology-capability { padding: 1.5rem; }
  .technology-capability h3 { font-size: 1.6rem; }
  .technology-diagram { max-width: 28rem; margin-inline: auto; }
  .technology-grid--detailed .technology-capability { padding-block: 2.5rem; }
  .technology-grid--detailed .technology-capability:nth-child(even) .technology-capability__copy,
  .technology-grid--detailed .technology-capability:nth-child(even) .technology-capability__visual { grid-column: auto; grid-row: auto; }
  .technology-grid--detailed .technology-capability__visual { padding: 1.5rem; }
}