:root {
  --paper: #F0E8D8;
  --ink: #121212;
  --cobalt: #2846FF;
  --signal: #F05A35;
  --muted: #746B5D;
  --paper-deep: #E3D7C3;
  --paper-light: #F8F2E7;
  --rule: rgba(18, 18, 18, 0.24);
  --paper-rule: rgba(240, 232, 216, 0.34);
  --font-sans: "Bricolage Grotesque", Arial, sans-serif;
  --font-serif: "Newsreader", Georgia, serif;
  --shell: 1440px;
  --gutter: clamp(1.25rem, 4vw, 4.5rem);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

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

html {
  background: var(--paper);
  color: var(--ink);
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  overflow-x: clip;
  background:
    linear-gradient(90deg, transparent 0 49.94%, rgba(18, 18, 18, 0.035) 49.94% 50.06%, transparent 50.06%),
    var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: 100;
  background-image: radial-gradient(rgba(18, 18, 18, 0.14) 0.55px, transparent 0.55px);
  background-size: 5px 5px;
  content: "";
  opacity: 0.1;
  pointer-events: none;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

button,
input,
select {
  color: inherit;
  font: inherit;
}

button,
a,
input,
select {
  -webkit-tap-highlight-color: transparent;
}

button {
  border: 0;
  background: none;
}

img {
  display: block;
  max-width: 100%;
}

h1,
h2,
h3,
p,
figure,
ol,
ul,
fieldset {
  margin: 0;
}

ol,
ul {
  padding: 0;
}

::selection {
  background: var(--cobalt);
  color: #FFFFFF;
}

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

.shell {
  width: min(100%, var(--shell));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  padding: 0.75rem 1rem;
  background: var(--ink);
  color: var(--paper);
  font-weight: 750;
  transform: translateY(-150%);
  transition: transform 180ms var(--ease);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--rule);
  background: rgba(240, 232, 216, 0.94);
  backdrop-filter: blur(14px);
}

.site-header.is-scrolled {
  box-shadow: 0 8px 24px rgba(18, 18, 18, 0.06);
}

.header-inner {
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.85rem;
  text-decoration: none;
}

.wordmark-name {
  font-size: 1.05rem;
  font-weight: 750;
  letter-spacing: -0.025em;
}

.wordmark-code,
.folio,
.eyebrow,
.entry-label,
.entry-index,
.entry-status,
.portrait figcaption,
.photo-frame figcaption,
.footer-index,
.tool-sources,
.lab-kicker,
.control-label,
.readout-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  line-height: 1.3;
  text-transform: uppercase;
}

.wordmark-code,
.folio,
.entry-label {
  color: var(--cobalt);
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 3vw, 3rem);
}

.site-header nav a {
  position: relative;
  padding-block: 0.35rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-header nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--cobalt);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms var(--ease);
}

.site-header nav a:hover::after,
.site-header nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-toggle {
  display: none;
}

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
}

.hero::before {
  position: absolute;
  right: 8%;
  bottom: -7rem;
  width: 15rem;
  aspect-ratio: 1;
  border: 1px solid var(--rule);
  border-radius: 50%;
  content: "";
}

.hero-grid {
  display: grid;
  min-height: 39rem;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 3.5rem);
  align-items: center;
  padding-block: clamp(4rem, 9vw, 7rem);
}

.hero-copy {
  position: relative;
  z-index: 2;
  grid-column: 1 / 9;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: clamp(2.25rem, 5vw, 4.25rem);
  color: var(--cobalt);
}

.eyebrow::before {
  width: 2.75rem;
  height: 2px;
  background: var(--signal);
  content: "";
}

.folio {
  margin-bottom: 1rem;
}

.hero h1 {
  max-width: 10ch;
  font-size: clamp(4rem, 7.5vw, 8rem);
  font-weight: 780;
  letter-spacing: -0.065em;
  line-height: 0.88;
}

.hero h1::first-line {
  font-family: var(--font-serif);
  font-weight: 500;
}

.hero-body {
  max-width: 42rem;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 1.8vw, 1.55rem);
  line-height: 1.42;
}

.portrait {
  position: relative;
  z-index: 1;
  grid-column: 10 / 13;
  align-self: end;
  width: min(100%, 19rem);
  margin: 0 0 -1px auto;
}

.portrait::before {
  position: absolute;
  top: -1.25rem;
  right: -1.25rem;
  z-index: -1;
  width: 45%;
  height: 28%;
  background: var(--cobalt);
  content: "";
}

.portrait-offset {
  position: absolute;
  right: 1rem;
  bottom: 2.3rem;
  left: -1rem;
  z-index: -1;
  height: 20%;
  background: var(--signal);
}

.portrait img {
  width: 100%;
  height: auto;
  border: 1px solid var(--ink);
  background: var(--paper-deep);
  filter: saturate(0.9) contrast(1.03);
}

.portrait figcaption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.7rem;
}

.index-wrap {
  position: relative;
  z-index: 4;
  margin-top: clamp(-2rem, -2vw, -1rem);
}

.index-rail {
  display: grid;
  grid-template-columns: 4fr 3fr 3fr;
  border: 1px solid var(--ink);
  background: var(--paper-light);
  box-shadow: 0 1.25rem 3rem rgba(18, 18, 18, 0.09);
}

.index-segment {
  display: grid;
  min-width: 0;
  min-height: 10rem;
  grid-template-columns: auto 1fr;
  grid-template-rows: 1fr auto;
  gap: 0.5rem 1.25rem;
  padding: clamp(1.25rem, 2.5vw, 2.25rem);
  color: inherit;
  text-decoration: none;
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}

.index-segment + .index-segment {
  border-left: 1px solid var(--ink);
}

.index-segment > span {
  grid-row: 1 / 3;
  align-self: start;
  color: var(--cobalt);
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 4vw, 4.5rem);
  font-weight: 500;
  letter-spacing: -0.06em;
  line-height: 0.85;
}

.index-segment strong {
  align-self: end;
  font-size: 1.15rem;
  letter-spacing: -0.025em;
}

.index-segment small {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.index-segment:hover,
.index-segment:focus-visible {
  background: var(--cobalt);
  color: #FFFFFF;
}

.index-segment:hover > span,
.index-segment:focus-visible > span,
.index-segment:hover small,
.index-segment:focus-visible small {
  color: #FFFFFF;
}

.index-playground {
  background: var(--signal);
}

.section-pad {
  padding-block: clamp(6rem, 11vw, 10.5rem);
}

.section-heading {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 3.5rem);
  margin-bottom: clamp(4rem, 8vw, 7rem);
}

.section-heading > .folio {
  grid-column: 1 / 4;
  padding-top: 0.6rem;
}

.section-heading > div {
  grid-column: 4 / 12;
}

.section-heading h2 {
  max-width: 12ch;
  font-size: clamp(3rem, 6vw, 6.7rem);
  font-weight: 780;
  letter-spacing: -0.06em;
  line-height: 0.92;
}

.section-deck {
  max-width: 39rem;
  margin-top: 1.5rem;
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  line-height: 1.4;
}

.work-ledger {
  border-bottom: 1px solid var(--rule);
}

.work-entry {
  display: grid;
  grid-template-columns: 1fr 7fr 2fr;
  gap: clamp(1.5rem, 3vw, 3.5rem);
  padding-block: clamp(2.75rem, 5vw, 5rem);
  border-top: 1px solid var(--rule);
}

.entry-index {
  color: var(--signal);
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 4vw, 4.5rem);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 0.9;
}

.entry-label {
  margin-bottom: 0.75rem;
}

.entry-copy h3 {
  margin-bottom: 1.25rem;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 4rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.95;
}

.entry-copy > p:last-child {
  max-width: 49rem;
  font-size: clamp(1.02rem, 1.4vw, 1.22rem);
}

.entry-link,
.entry-status {
  align-self: end;
  padding-top: 0.8rem;
  border-top: 4px solid var(--signal);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.entry-link {
  text-decoration-thickness: 0.1em;
}

.off-hours {
  border-top: 1px solid var(--ink);
  background: var(--paper-deep);
}

.off-hours-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 3.5rem);
}

.music-note {
  position: relative;
  display: flex;
  min-height: 21rem;
  grid-column: 1 / 5;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(1.5rem, 3vw, 2.75rem);
  overflow: hidden;
  background: var(--cobalt);
  color: #FFFFFF;
}

.music-note::after {
  position: absolute;
  right: -5rem;
  bottom: -5rem;
  width: 15rem;
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 50%;
  content: "";
}

.music-note .entry-label {
  color: var(--paper);
}

.music-note > p:nth-child(2) {
  position: relative;
  z-index: 1;
  max-width: 24rem;
  font-family: var(--font-serif);
  font-size: clamp(1.45rem, 2.4vw, 2.25rem);
  line-height: 1.25;
}

.music-note > span {
  position: relative;
  z-index: 1;
  align-self: flex-end;
  color: var(--signal);
  font-size: clamp(3rem, 6vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.08em;
  line-height: 0.8;
}

.photo-notes {
  grid-column: 6 / 12;
  align-self: end;
  padding-top: 1rem;
  border-top: 1px solid var(--ink);
}

.photo-notes > p:last-child {
  max-width: 42rem;
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 1.8vw, 1.55rem);
  line-height: 1.4;
}

.contact-sheet {
  display: grid;
  grid-column: 1 / 13;
  grid-template-columns: 4fr 2.6fr 3.4fr;
  gap: clamp(1.25rem, 2.5vw, 2.75rem);
  align-items: end;
  margin-top: clamp(2rem, 5vw, 4rem);
}

.photo-frame > div {
  position: relative;
  display: grid;
  place-items: center;
  border: 1px solid var(--ink);
  background:
    linear-gradient(135deg, transparent 49.8%, var(--rule) 49.8% 50.2%, transparent 50.2%),
    linear-gradient(45deg, transparent 49.8%, var(--rule) 49.8% 50.2%, transparent 50.2%),
    rgba(240, 232, 216, 0.5);
}

.photo-frame > div::before {
  position: absolute;
  inset: 0.65rem;
  border: 1px solid var(--rule);
  content: "";
}

.photo-frame > div span {
  padding: 0.55rem 0.8rem;
  background: var(--paper-deep);
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 1.5rem;
}

.frame-landscape > div {
  aspect-ratio: 4 / 3;
}

.frame-portrait > div {
  aspect-ratio: 3 / 4;
}

.frame-square > div {
  aspect-ratio: 1;
}

.photo-frame figcaption {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding-top: 0.7rem;
  color: var(--muted);
}

.playground {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
}

.playground::before {
  position: absolute;
  top: 4rem;
  right: -10rem;
  width: 28rem;
  aspect-ratio: 1;
  border: 1px solid var(--paper-rule);
  border-radius: 50%;
  content: "";
}

.section-heading-dark .folio {
  color: var(--signal);
}

.playground-feature {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 5fr 3fr;
  gap: clamp(1.5rem, 3vw, 3.5rem);
  padding: clamp(1.5rem, 4vw, 4rem);
  border: 1px solid var(--paper);
  background: var(--cobalt);
  color: #FFFFFF;
}

.playground-feature :focus-visible,
.lab-page :focus-visible {
  outline-color: var(--paper);
}

.audio-controls :focus-visible {
  outline-color: var(--cobalt);
}

.audio-controls button:focus-visible {
  outline-color: var(--signal);
}

.tool-number {
  color: var(--signal);
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 7vw, 7.5rem);
  font-weight: 500;
  letter-spacing: -0.08em;
  line-height: 0.8;
}

.tool-copy .entry-label {
  color: var(--paper);
}

.tool-copy h3 {
  margin-block: 0.75rem 1.25rem;
  font-family: var(--font-serif);
  font-size: clamp(3rem, 6vw, 6.5rem);
  font-weight: 500;
  letter-spacing: -0.06em;
  line-height: 0.85;
}

.tool-copy > p:not(.entry-label) {
  max-width: 38rem;
  font-size: clamp(1.05rem, 1.5vw, 1.28rem);
}

.tool-link {
  display: inline-grid;
  min-height: 3.25rem;
  place-items: center;
  margin-top: 2rem;
  padding: 0.65rem 1.15rem;
  border: 1px solid var(--paper);
  background: var(--paper);
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.07em;
  text-decoration: none;
  text-transform: uppercase;
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}

.tool-link:hover,
.tool-link:focus-visible {
  background: var(--signal);
  color: var(--ink);
}

.tool-diagram {
  display: grid;
  min-height: 15rem;
  grid-template-columns: auto 1fr auto 1fr auto;
  align-items: center;
  gap: 0.75rem;
  align-self: center;
}

.tool-diagram span {
  display: grid;
  width: 3rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--paper);
  border-radius: 50%;
  font-weight: 800;
}

.tool-diagram i {
  height: 1px;
  background: var(--paper);
}

.tool-diagram strong {
  display: grid;
  width: 5.5rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--paper);
  background: var(--signal);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  transform: rotate(4deg);
}

.tool-sources {
  grid-column: 2 / 4;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.45);
  color: rgba(255, 255, 255, 0.82);
}

.email {
  padding-block: clamp(4rem, 7vw, 6rem);
  border-top: 1px solid var(--ink);
}

.email-grid {
  display: grid;
  grid-template-columns: 3fr 6fr 3fr;
  gap: clamp(1.5rem, 3vw, 3.5rem);
  align-items: end;
}

.email h2 {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 5.5rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.9;
}

.email-link {
  display: inline-block;
  margin-top: 1.25rem;
  color: var(--cobalt);
  font-size: clamp(1.1rem, 1.8vw, 1.5rem);
  font-weight: 750;
}

.footer-index {
  color: var(--muted);
  text-align: right;
}

.error-page {
  display: grid;
  min-height: 100svh;
  place-items: center;
  padding: var(--gutter);
}

.error-shell {
  width: min(100%, 52rem);
  padding: clamp(2rem, 6vw, 5rem);
  border: 1px solid var(--ink);
  background: var(--paper-light);
  box-shadow: 1.25rem 1.25rem 0 var(--signal);
}

.error-shell h1 {
  max-width: 10ch;
  font-size: clamp(3rem, 8vw, 7rem);
  letter-spacing: -0.065em;
  line-height: 0.85;
}

.error-shell > p:not(.folio) {
  max-width: 34rem;
  margin-block: 1.75rem;
  font-family: var(--font-serif);
  font-size: 1.25rem;
}

.error-shell a {
  color: var(--cobalt);
  font-weight: 750;
}

/* Binaural Lab shared components */

.lab-page {
  min-height: 100svh;
  background: var(--ink);
  color: var(--paper);
}

.lab-page::before {
  opacity: 0.08;
}

.lab-shell {
  width: min(100%, 1280px);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.lab-header {
  border-bottom: 1px solid var(--paper-rule);
}

.lab-header-inner {
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.lab-back,
.lab-mark {
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.lab-back {
  color: var(--paper);
}

.lab-mark {
  color: var(--signal);
}

.lab-main {
  padding-block: clamp(3.5rem, 7vw, 7rem);
}

.lab-intro {
  display: grid;
  grid-template-columns: 2fr 8fr 2fr;
  gap: clamp(1.5rem, 3vw, 3.5rem);
  align-items: end;
  margin-bottom: clamp(3rem, 6vw, 5.5rem);
}

.lab-kicker {
  align-self: start;
  color: var(--signal);
}

.lab-intro-copy {
  grid-column: 2;
}

.lab-intro h1 {
  max-width: 9ch;
  font-family: var(--font-serif);
  font-size: clamp(4rem, 9vw, 9.5rem);
  font-weight: 500;
  letter-spacing: -0.07em;
  line-height: 0.78;
}

.lab-intro-copy > p {
  max-width: 42rem;
  margin-top: 2rem;
  color: rgba(240, 232, 216, 0.75);
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
}

.headphone-note {
  grid-column: 3;
  padding-top: 0.85rem;
  border-top: 4px solid var(--signal);
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.35;
}

.lab-panel {
  display: grid;
  grid-template-columns: 4fr 6fr;
  border: 1px solid var(--paper);
}

.lab-readout {
  display: grid;
  min-width: 0;
  grid-template-rows: auto 1fr auto;
  padding: clamp(1.5rem, 3vw, 3rem);
  border-right: 1px solid var(--paper);
  background: var(--cobalt);
}

.readout-state {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.readout-state strong {
  color: var(--signal);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.frequency-display {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: center;
  margin-block: clamp(3rem, 8vw, 7rem);
}

.frequency-channel {
  min-width: 0;
  text-align: center;
}

.frequency-channel output {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(3rem, 7vw, 7.5rem);
  font-weight: 500;
  letter-spacing: -0.07em;
  line-height: 0.85;
}

.frequency-channel span {
  display: block;
  margin-top: 0.6rem;
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.frequency-gap {
  display: grid;
  width: clamp(3.5rem, 7vw, 6rem);
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--paper);
  border-radius: 50%;
  background: var(--signal);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.45rem);
  font-weight: 600;
}

.timer-display {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--paper-rule);
}

.timer-display output {
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  font-weight: 750;
  letter-spacing: -0.04em;
}

.audio-controls {
  display: grid;
  min-width: 0;
  gap: 2rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  background: var(--paper);
  color: var(--ink);
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.control-group {
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--ink);
}

.control-group label,
.control-group legend {
  display: flex;
  width: 100%;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0;
  font-weight: 750;
}

.control-group output {
  color: var(--cobalt);
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
}

.control-group input[type="range"] {
  width: 100%;
  min-height: 44px;
  margin-top: 1rem;
  accent-color: var(--cobalt);
  cursor: pointer;
}

.preset-list,
.duration-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem;
  margin-top: 1rem;
}

.preset-list button,
.duration-list label {
  display: grid;
  min-height: 44px;
  place-items: center;
  border: 1px solid var(--ink);
  background: var(--paper-light);
  font-size: 0.76rem;
  font-weight: 750;
  cursor: pointer;
}

.preset-list button:hover,
.preset-list button[aria-pressed="true"],
.duration-list label:has(input:checked) {
  background: var(--cobalt);
  color: #FFFFFF;
}

.duration-list input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.duration-list label:has(input:focus-visible) {
  outline: 3px solid var(--cobalt);
  outline-offset: 3px;
}

.transport {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  border: 1px solid var(--ink);
}

.transport button {
  min-height: 3.75rem;
  padding: 0.75rem 1rem;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.transport button + button {
  border-left: 1px solid var(--ink);
}

.transport button:first-child {
  background: var(--cobalt);
  color: #FFFFFF;
}

.transport button:hover:not(:disabled),
.transport button:focus-visible:not(:disabled) {
  background: var(--signal);
  color: var(--ink);
}

.transport button:disabled {
  color: var(--muted);
  cursor: not-allowed;
  opacity: 0.55;
}

.lab-status {
  min-height: 1.6em;
  color: var(--muted);
  font-family: var(--font-serif);
}

.lab-notes {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 3.5rem);
  padding-block: clamp(4rem, 8vw, 7rem);
  border-bottom: 1px solid var(--paper-rule);
}

.lab-notes h2 {
  grid-column: 1 / 4;
  color: var(--signal);
  font-size: 0.78rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.lab-note-copy {
  display: grid;
  grid-column: 4 / 12;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
}

.lab-note-copy p {
  color: rgba(240, 232, 216, 0.75);
  font-family: var(--font-serif);
  font-size: 1.08rem;
}

.lab-note-copy a {
  color: var(--paper);
}

.lab-footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 2rem 4rem;
  color: rgba(240, 232, 216, 0.55);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.reveal {
  opacity: 1;
  transform: none;
}

.reveal-ready .reveal {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}

.reveal-ready .reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 960px) {
  .hero-copy {
    grid-column: 1 / 9;
  }

  .portrait {
    grid-column: 9 / 13;
  }

  .index-segment {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr;
  }

  .index-segment > span {
    grid-row: auto;
  }

  .work-entry {
    grid-template-columns: 1fr 6fr 2fr;
  }

  .music-note {
    grid-column: 1 / 6;
  }

  .photo-notes {
    grid-column: 7 / 13;
  }

  .playground-feature {
    grid-template-columns: 1fr 5fr;
  }

  .tool-diagram {
    grid-column: 1 / 3;
    min-height: 8rem;
  }

  .tool-sources {
    grid-column: 2;
  }

  .lab-intro {
    grid-template-columns: 2fr 7fr 3fr;
  }

  .lab-panel {
    grid-template-columns: 1fr;
  }

  .lab-readout {
    border-right: 0;
    border-bottom: 1px solid var(--paper);
  }

  .frequency-display {
    margin-block: 3rem;
  }
}

@media (max-width: 760px) {
  :root {
    --gutter: 1.25rem;
  }

  html {
    scroll-padding-top: 4.25rem;
  }

  .header-inner,
  .lab-header-inner {
    min-height: 4.25rem;
  }

  .js .nav-toggle {
    display: inline-flex;
    min-width: 4.5rem;
    min-height: 44px;
    align-items: center;
    justify-content: flex-end;
    gap: 0.65rem;
    font-size: 0.75rem;
    font-weight: 750;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .nav-toggle-mark,
  .nav-toggle-mark::before,
  .nav-toggle-mark::after {
    display: block;
    width: 1.1rem;
    height: 1px;
    background: currentColor;
    content: "";
    transition: transform 180ms var(--ease);
  }

  .nav-toggle-mark {
    position: relative;
  }

  .nav-toggle-mark::before {
    position: absolute;
    top: -0.35rem;
  }

  .nav-toggle-mark::after {
    position: absolute;
    top: 0.35rem;
  }

  .js .site-header nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: grid;
    max-height: 0;
    gap: 0;
    overflow: hidden;
    border-bottom: 0 solid var(--ink);
    background: var(--ink);
    color: var(--paper);
    transition: max-height 250ms var(--ease), border-width 250ms var(--ease);
  }

  .js .site-header nav[data-open="true"] {
    max-height: 18rem;
    border-bottom-width: 1px;
  }

  .no-js .header-inner {
    flex-wrap: wrap;
    padding-block: 0.75rem;
  }

  .no-js .site-header nav {
    display: grid;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
  }

  .site-header nav a {
    min-height: 3.25rem;
    padding: 1rem var(--gutter);
    border-top: 1px solid var(--paper-rule);
  }

  .site-header nav a:focus-visible {
    outline-color: var(--paper);
  }

  .site-header nav a::after {
    display: none;
  }

  .hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-block: 4rem 0;
  }

  .hero-copy,
  .portrait {
    grid-column: 1;
  }

  .hero-copy {
    padding-bottom: 3rem;
  }

  .hero h1 {
    max-width: 9ch;
    font-size: clamp(3.5rem, 15vw, 6.5rem);
  }

  .portrait {
    width: min(72vw, 17rem);
    margin-right: 1rem;
  }

  .index-wrap {
    margin-top: 1.25rem;
  }

  .index-rail {
    grid-template-columns: 1fr;
  }

  .index-segment {
    min-height: 0;
    grid-template-columns: 5rem 1fr;
    grid-template-rows: auto auto;
    padding: 1.25rem;
  }

  .index-segment + .index-segment {
    border-top: 1px solid var(--ink);
    border-left: 0;
  }

  .index-segment > span {
    grid-row: 1 / 3;
    font-size: 2.5rem;
  }

  .section-pad {
    padding-block: 5rem;
  }

  .section-heading {
    grid-template-columns: 1fr;
    margin-bottom: 3rem;
  }

  .section-heading > .folio,
  .section-heading > div {
    grid-column: 1;
  }

  .section-heading h2 {
    font-size: clamp(3rem, 13vw, 5.5rem);
  }

  .work-entry {
    grid-template-columns: 4rem 1fr;
    padding-block: 2.5rem;
  }

  .entry-index {
    font-size: 2.5rem;
  }

  .entry-copy {
    min-width: 0;
  }

  .entry-link,
  .entry-status {
    grid-column: 2;
  }

  .off-hours-grid {
    grid-template-columns: 1fr;
  }

  .music-note,
  .photo-notes,
  .contact-sheet {
    grid-column: 1;
  }

  .photo-notes {
    margin-top: 1rem;
  }

  .contact-sheet {
    grid-template-columns: 1fr 0.75fr;
  }

  .frame-square {
    grid-column: 1 / 3;
    width: 72%;
    justify-self: end;
  }

  .playground-feature {
    grid-template-columns: 1fr;
  }

  .tool-copy,
  .tool-diagram,
  .tool-sources {
    grid-column: 1;
  }

  .tool-diagram {
    min-height: 7rem;
  }

  .email-grid {
    grid-template-columns: 1fr;
  }

  .footer-index {
    margin-top: 2rem;
    text-align: left;
  }

  .lab-intro {
    grid-template-columns: 1fr;
  }

  .lab-kicker,
  .lab-intro-copy,
  .headphone-note {
    grid-column: 1;
  }

  .headphone-note {
    max-width: 28rem;
    margin-top: 1rem;
  }

  .control-grid {
    grid-template-columns: 1fr;
  }

  .lab-notes {
    grid-template-columns: 1fr;
  }

  .lab-notes h2,
  .lab-note-copy {
    grid-column: 1;
  }

  .lab-note-copy {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 390px) {
  .wordmark-code {
    display: none;
  }

  .hero h1 {
    font-size: clamp(3.15rem, 16vw, 4.2rem);
  }

  .hero-body,
  .section-deck {
    font-size: 1.15rem;
  }

  .work-entry {
    grid-template-columns: 3rem 1fr;
    gap: 1rem;
  }

  .entry-copy h3 {
    font-size: 2.25rem;
  }

  .contact-sheet {
    grid-template-columns: 1fr;
  }

  .frame-square {
    grid-column: 1;
    width: 100%;
  }

  .photo-frame figcaption {
    font-size: 0.62rem;
  }

  .playground-feature {
    padding: 1.25rem;
  }

  .tool-copy h3 {
    font-size: 3.25rem;
  }

  .tool-diagram {
    gap: 0.4rem;
  }

  .tool-diagram span {
    width: 2.5rem;
  }

  .tool-diagram strong {
    width: 4.5rem;
  }

  .lab-mark {
    display: none;
  }

  .lab-intro h1 {
    font-size: clamp(3.5rem, 18vw, 5rem);
  }

  .frequency-display {
    gap: 0.4rem;
  }

  .frequency-channel output {
    font-size: 2.65rem;
  }

  .frequency-gap {
    width: 3.25rem;
    font-size: 0.9rem;
  }

  .audio-controls,
  .lab-readout {
    padding: 1.1rem;
  }

  .control-group {
    padding: 1rem;
  }

  .preset-list,
  .duration-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .transport {
    grid-template-columns: 1fr;
  }

  .transport button + button {
    border-top: 1px solid var(--ink);
    border-left: 0;
  }

  .lab-footer {
    display: grid;
    gap: 0.75rem;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal-ready .reveal {
    opacity: 1;
    transform: none;
  }
}