:root {
  color-scheme: light;
  --paper: #f7f8f5;
  --paper-raised: #ffffff;
  --paper-muted: #edf1ed;
  --ink: #172526;
  --ink-soft: #536364;
  --ink-faint: #667374;
  --line: #ccd5d1;
  --line-strong: #9eaaa6;
  --accent: #123c40;
  --accent-hover: #0c3033;
  --accent-pale: #dce9e3;
  --accent-mid: #8ab5a6;
  --warning: #815b16;
  --warning-pale: #fff4d8;
  --danger: #9c3434;
  --focus: #d37a1f;
  --serif: Georgia, "Times New Roman", serif;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --measure: 76rem;
  --text-measure: 47rem;
  --radius: 5px;
  --shadow: 0 12px 32px rgba(23, 37, 38, 0.08);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #111918;
  --paper-raised: #182321;
  --paper-muted: #202d2a;
  --ink: #edf3ef;
  --ink-soft: #bac7c1;
  --ink-faint: #8e9c96;
  --line: #34433e;
  --line-strong: #566760;
  --accent: #8ec6b1;
  --accent-hover: #a7d7c4;
  --accent-pale: #243b34;
  --accent-mid: #5e927f;
  --warning: #e5bd6d;
  --warning-pale: #3a3020;
  --danger: #f18989;
  --focus: #f0a556;
  --shadow: 0 14px 38px rgba(0, 0, 0, 0.3);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #111918;
    --paper-raised: #182321;
    --paper-muted: #202d2a;
    --ink: #edf3ef;
    --ink-soft: #bac7c1;
    --ink-faint: #8e9c96;
    --line: #34433e;
    --line-strong: #566760;
    --accent: #8ec6b1;
    --accent-hover: #a7d7c4;
    --accent-pale: #243b34;
    --accent-mid: #5e927f;
    --warning: #e5bd6d;
    --warning-pale: #3a3020;
    --danger: #f18989;
    --focus: #f0a556;
    --shadow: 0 14px 38px rgba(0, 0, 0, 0.3);
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}

button,
select {
  font: inherit;
}

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

button {
  color: inherit;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 2px;
}

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

[hidden] {
  display: none !important;
}

.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;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: -5rem;
  left: 1rem;
  padding: 0.7rem 1rem;
  color: var(--paper);
  background: var(--ink);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 2rem, var(--measure));
  min-height: 4.5rem;
  margin: 0 auto;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-grid;
  grid-template-columns: 4px auto;
  grid-template-rows: auto auto;
  column-gap: 0.7rem;
  color: var(--ink);
  font-size: 0.78rem;
  line-height: 1.08;
  letter-spacing: 0.09em;
  text-decoration: none;
  text-transform: uppercase;
}

.brand:hover {
  text-decoration: none;
}

.brand-rule {
  grid-row: 1 / 3;
  width: 4px;
  background: var(--accent);
}

.brand strong {
  font-family: var(--serif);
  font-size: 1.08rem;
  letter-spacing: 0.015em;
  text-transform: none;
}

.theme-toggle {
  display: grid;
  width: 2.6rem;
  height: 2.6rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
}

.theme-toggle:hover {
  border-color: var(--accent);
}

main {
  width: min(100% - 2rem, var(--measure));
  margin: 0 auto;
}

.hero {
  padding: clamp(1.8rem, 5vw, 4rem) 0 1.35rem;
}

.hero-copy {
  max-width: 59rem;
}

.eyebrow,
.section-kicker {
  margin: 0 0 0.55rem;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 650;
  line-height: 1.13;
}

h1 {
  max-width: 21ch;
  margin: 0;
  font-size: clamp(2.2rem, 6vw, 4.65rem);
  letter-spacing: -0.035em;
}

.tagline {
  max-width: 72ch;
  margin: 0.8rem 0 1.4rem;
  color: var(--ink-soft);
  font-size: clamp(1rem, 2vw, 1.18rem);
}

.primary-nav {
  display: flex;
  gap: 0 1.3rem;
  overflow-x: auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}

.primary-nav a {
  flex: none;
  padding: 0.75rem 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 650;
  text-decoration: none;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  color: var(--accent);
}

.primary-nav a[aria-current="page"] {
  box-shadow: inset 0 -3px var(--accent);
}

.type-nav {
  border-bottom: 1px solid var(--line);
}

.type-nav summary {
  width: max-content;
  padding: 0.65rem 0;
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 650;
  cursor: pointer;
}

.type-nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1.1rem;
  padding: 0 0 0.85rem;
}

.type-nav a {
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.type-nav a[aria-current="page"] {
  color: var(--accent);
  font-weight: 750;
}

.tool {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--paper-raised);
  box-shadow: var(--shadow);
}

.tool::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent);
  content: "";
}

.tool-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1.5rem;
  padding: clamp(1.2rem, 3vw, 2rem) clamp(1rem, 3vw, 2rem) 0;
}

.tool-heading h2 {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 2rem);
}

.privacy-mark {
  flex: none;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.privacy-mark span {
  color: #2c8061;
}

.instrument {
  min-height: 15rem;
  padding: clamp(1rem, 3vw, 2rem);
  background:
    linear-gradient(180deg, transparent 65%, color-mix(in srgb, var(--accent-pale) 65%, transparent)),
    repeating-linear-gradient(90deg, transparent 0 5.7rem, color-mix(in srgb, var(--line) 32%, transparent) 5.7rem 5.76rem);
}

.readout {
  display: grid;
  grid-template-columns: minmax(8rem, 0.7fr) minmax(11rem, 1fr) 1.5rem;
  align-items: center;
  width: min(100%, 42rem);
  min-height: 7rem;
  margin: 0 auto 1.2rem;
  padding: 1rem 1.2rem;
  border: 1px solid var(--line);
  border-left: 5px solid var(--line-strong);
  background: var(--paper-raised);
}

.readout[data-direction="center"] {
  border-left-color: #2c8061;
}

.readout[data-direction="flat"],
.readout[data-direction="sharp"] {
  border-left-color: var(--warning);
}

.readout-label {
  display: block;
  color: var(--ink-faint);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

#live-note {
  display: block;
  min-height: 3.6rem;
  font-family: var(--serif);
  font-size: 3.25rem;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.readout-detail {
  display: grid;
  gap: 0.3rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
}

.tuning-shape {
  display: block;
  width: 0.85rem;
  height: 0.85rem;
  border: 2px solid var(--line-strong);
  transform: rotate(45deg);
}

[data-direction="center"] .tuning-shape {
  border-color: #2c8061;
  border-radius: 50%;
  background: #2c8061;
}

[data-direction="flat"] .tuning-shape {
  border-color: var(--warning);
  transform: rotate(-45deg);
}

[data-direction="sharp"] .tuning-shape {
  border-color: var(--warning);
  transform: rotate(45deg);
}

.piano {
  display: flex;
  align-items: start;
  width: 100%;
  min-height: 6.4rem;
  padding: 0 0.4rem 0.5rem;
  overflow: hidden;
  perspective: 900px;
  transform: rotateX(5deg);
  transform-origin: center bottom;
}

.piano-key {
  position: relative;
  display: block;
  flex: 1 1 0;
  min-width: 0;
  height: 5.7rem;
  border: 1px solid #a7aea9;
  border-top: 4px solid #d7ddd8;
  border-radius: 0 0 2px 2px;
  background: #f7f7f2;
  box-shadow: 0 0.35rem 0 #b7bdb8;
  transition: transform 120ms ease, background 120ms ease;
}

.piano-key--black {
  z-index: 2;
  height: 3.7rem;
  margin-right: -0.24%;
  margin-left: -0.24%;
  border-color: #0d1515;
  border-top-color: #34403e;
  background: #17211f;
  box-shadow: 0 0.26rem 0 #050808;
}

.piano-key span {
  position: absolute;
  right: 0;
  bottom: 0.18rem;
  left: 0;
  overflow: hidden;
  color: #737b77;
  font-size: 0.5rem;
  text-align: center;
}

.piano-key.is-current {
  z-index: 4;
  background: #7ccbae;
  box-shadow: 0 0.18rem 0 #287259, 0 0 1.2rem rgba(58, 154, 119, 0.75);
  transform: translateY(0.18rem);
}

.capture {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 5.8rem;
  padding: 1rem clamp(1rem, 3vw, 2rem);
  border-top: 1px solid var(--line);
  background: var(--paper-raised);
}

.capture-copy {
  display: grid;
}

.capture-copy > span {
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.capture-copy > strong {
  font-family: var(--serif);
  font-size: 1rem;
}

.capture-copy small {
  color: var(--ink-faint);
}

.capture-actions,
.result-actions,
.dialog-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.button {
  min-height: 2.75rem;
  padding: 0.58rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  background: var(--paper-raised);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 700;
}

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

.button--primary {
  border-color: var(--accent);
  color: var(--paper-raised);
  background: var(--accent);
}

:root[data-theme="dark"] .button--primary {
  color: #10211d;
}

.button--primary:hover {
  background: var(--accent-hover);
}

.button.is-ready {
  box-shadow: 0 0 0 4px var(--accent-pale);
}

.button--small {
  min-height: 2.75rem;
  padding: 0.35rem 0.75rem;
}

.hold-feedback {
  display: grid;
  gap: 0.45rem;
  padding: 0.8rem clamp(1rem, 3vw, 2rem);
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.hold-feedback progress {
  width: 100%;
  height: 0.55rem;
  accent-color: var(--accent);
}

.confirmed {
  display: flex;
  gap: 1.2rem;
  padding: 0 2rem 1rem;
  color: var(--ink-faint);
  font-size: 0.74rem;
}

.confirmed b {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.noscript-note {
  margin: 0;
  padding: 0.8rem 1rem;
  color: var(--warning);
  background: var(--warning-pale);
}

.result-panel {
  margin-top: 1rem;
  padding: clamp(1.2rem, 3vw, 2rem);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  background: var(--paper-raised);
}

.result-lead {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.result-lead h2 {
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 4.5rem);
  letter-spacing: -0.04em;
}

.result-lead p {
  margin: 0.2rem 0 0;
  color: var(--ink-soft);
}

.result-lead > strong {
  max-width: 22rem;
  font-size: 1rem;
  text-align: right;
}

.result-caveat {
  max-width: 70ch;
}

.model-label {
  display: inline-block;
  margin: 0.4rem 0;
  padding: 0.3rem 0.5rem;
  color: var(--warning);
  background: var(--warning-pale);
  font-size: 0.78rem;
  font-weight: 750;
}

.result-panel h3 {
  margin-bottom: 0.4rem;
  font-size: 1.05rem;
}

.result-panel ul {
  margin-top: 0;
  padding-left: 1.2rem;
}

.content {
  max-width: var(--text-measure);
  margin: clamp(2.5rem, 7vw, 5rem) auto 0;
  padding-bottom: 3rem;
}

.content .intro {
  margin: 0 0 2.2rem;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1.18rem, 2.5vw, 1.48rem);
  line-height: 1.5;
}

.content h2 {
  margin: 2.5rem 0 0.8rem;
  font-size: clamp(1.55rem, 3vw, 2.15rem);
}

.content h3 {
  margin: 1.7rem 0 0.5rem;
  font-size: 1.2rem;
}

.reference-feature {
  padding: 0 0 2rem;
  border-bottom: 1px solid var(--line);
}

.evidence-note,
.sources p {
  color: var(--ink-faint);
  font-size: 0.82rem;
}

.sources ul {
  padding-left: 1.2rem;
}

.sources li {
  margin: 0.45rem 0;
}

.faq {
  margin-top: 2.8rem;
}

.faq details {
  border-top: 1px solid var(--line);
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  padding: 1rem 2rem 1rem 0;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  float: right;
  margin-right: -1.8rem;
  color: var(--accent);
  content: "+";
}

.faq details[open] summary::after {
  content: "−";
}

.faq details p {
  max-width: 67ch;
  margin-top: 0;
  color: var(--ink-soft);
}

.howto ol,
.methodology ol {
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.methodology > summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  min-height: 44px;
  padding: 1rem 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  font-weight: 700;
}

.methodology > summary::-webkit-details-marker {
  display: none;
}

.methodology > summary::after {
  color: var(--accent);
  content: '+';
  font-family: var(--sans);
  font-size: 1.3rem;
}

.methodology[open] > summary::after {
  content: '−';
}

.methodology > summary small {
  color: var(--ink-faint);
  font-family: var(--sans);
  font-size: .78rem;
  font-weight: 600;
}

.methodology-body {
  padding-bottom: 1rem;
}

.howto li,
.methodology li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  counter-increment: steps;
}

.howto li::before,
.methodology li::before {
  grid-row: 1 / 3;
  color: var(--accent);
  font-family: var(--serif);
  font-size: 1.4rem;
  content: counter(steps);
}

.howto li strong,
.howto li span {
  display: block;
}

.howto li span {
  color: var(--ink-soft);
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 1rem 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.evidence-grid div {
  padding: 1rem 0;
}

.evidence-grid div + div {
  padding-left: 1rem;
  border-left: 1px solid var(--line);
}

.evidence-grid dt {
  color: var(--ink-faint);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.evidence-grid dd {
  margin: 0.15rem 0 0;
  font-family: var(--serif);
  font-size: 1.28rem;
}

.disputed {
  padding: 0.1rem 0.25rem;
  color: var(--warning);
  background: var(--warning-pale);
  font-size: 0.72rem;
  font-weight: 750;
}

.section-heading,
.stats-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.section-heading p,
.stats-heading p {
  margin-top: 0;
  color: var(--ink-soft);
}

.segmented {
  display: flex;
  flex: none;
  border: 1px solid var(--line-strong);
}

.segmented button {
  min-height: 44px;
  padding: 0.45rem 0.65rem;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 0.78rem;
}

.segmented button + button {
  border-left: 1px solid var(--line-strong);
}

.segmented button[aria-pressed="true"] {
  color: var(--paper-raised);
  background: var(--accent);
}

.chart-controls {
  display: flex;
  gap: 1rem;
  margin: 1rem 0;
}

.chart-controls label {
  display: grid;
  gap: 0.25rem;
  color: var(--ink-soft);
  font-size: 0.76rem;
  font-weight: 700;
}

.chart-controls select {
  min-height: 44px;
  min-width: 8rem;
  padding: 0.45rem;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  color: var(--ink);
  background: var(--paper-raised);
}

.range-chart {
  padding: 1rem;
  border: 1px solid var(--line);
  background: var(--paper-muted);
}

.chart-scale,
.chart-row {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 0.7rem;
  align-items: center;
}

.chart-scale {
  margin-bottom: 0.45rem;
  color: var(--ink-soft);
  font-size: 0.68rem;
}

.chart-scale span:first-child {
  grid-column: 2;
}

.chart-scale {
  grid-template-columns: 7rem repeat(5, 1fr);
}

.chart-row {
  margin: 0.35rem 0;
}

.chart-label {
  overflow: hidden;
  font-size: 0.76rem;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chart-track {
  display: grid;
  grid-template-columns: repeat(49, minmax(0, 1fr));
  min-height: 1.2rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(90deg, transparent 24.8%, var(--line) 25%, transparent 25.2%, transparent 49.8%, var(--line) 50%, transparent 50.2%, transparent 74.8%, var(--line) 75%, transparent 75.2%),
    var(--paper-raised);
}

.chart-cell {
  min-width: 0;
}

.chart-cell--reference {
  background: var(--accent-mid);
}

.chart-cell--user {
  background: var(--warning);
}

.chart-row--measured {
  padding-top: 0.45rem;
  border-top: 1px dashed var(--line-strong);
}

.reference-table {
  width: 100%;
  border-collapse: collapse;
}

.reference-table-wrap {
  overflow-x: auto;
}

.reference-table th,
.reference-table td {
  padding: 0.5rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.reference-table caption {
  margin-bottom: 0.45rem;
  color: var(--ink-faint);
  font-size: 0.8rem;
  text-align: left;
}

.type-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.type-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  min-height: 3rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  color: var(--ink);
  background: var(--paper-raised);
  text-align: left;
  cursor: pointer;
}

.type-card:hover {
  border-color: var(--accent);
}

.type-card strong,
.type-card small {
  display: block;
}

.type-card small,
.type-card > span:last-child {
  color: var(--ink-faint);
  font-size: 0.75rem;
}

.type-card > span:last-child {
  flex: none;
}

.drawer-body {
  padding: 0 clamp(1rem, 4vw, 2rem) 2rem;
}

.drawer-close-row {
  position: sticky;
  z-index: 2;
  top: 0;
  display: flex;
  justify-content: flex-end;
  padding: 0.6rem 0;
  background: var(--paper-raised);
}

.drawer-body h2 {
  margin-top: 0.8rem;
}

.drawer-body h3 {
  margin-top: 1rem;
  font-size: 1.45rem;
}

.stats-heading {
  margin-top: 0.7rem;
}

.sample-size {
  flex: none;
  text-align: right;
}

.sample-size span {
  display: block;
  color: var(--ink-faint);
  font-size: 0.72rem;
}

.sample-size strong {
  font-family: var(--serif);
  font-size: 2rem;
}

.distribution {
  margin: 1rem 0;
  padding: 0;
  list-style: none;
}

.distribution li {
  display: grid;
  grid-template-columns: 9rem 1fr 2.4rem;
  gap: 0.6rem;
  align-items: center;
  margin: 0.55rem 0;
  font-size: 0.8rem;
}

.model-bar {
  height: 0.85rem;
  background: var(--paper-muted);
}

.model-bar i {
  display: block;
  height: 100%;
  background: var(--accent-mid);
}

.model-bar i[data-width="6"] { width: 15%; }
.model-bar i[data-width="25"] { width: 63%; }
.model-bar i[data-width="38"] { width: 95%; }
.model-bar i[data-width="24"] { width: 60%; }
.model-bar i[data-width="7"] { width: 18%; }

.site-footer {
  margin-top: 1rem;
  border-top: 1px solid var(--line);
}

.site-footer > div {
  width: min(100% - 2rem, var(--measure));
  margin: 0 auto;
  padding: 1.5rem 0 3rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
  align-items: center;
  font-size: 0.82rem;
}

.site-footer p {
  max-width: 70ch;
  margin: 0.65rem 0 0;
  color: var(--ink-faint);
  font-size: 0.76rem;
}

.legal-page {
  max-width: var(--text-measure);
  min-height: 70vh;
  padding: 2rem 0 4rem;
}

.legal-page h1 {
  font-size: clamp(2.2rem, 6vw, 4rem);
}

.legal-page h2 {
  margin-top: 2.5rem;
  font-size: 1.8rem;
}

.legal-page h3 {
  margin-top: 1.7rem;
  font-size: 1.1rem;
}

.legal-date {
  color: var(--ink-faint);
  font-size: 0.82rem;
}

dialog {
  width: min(100% - 2rem, 42rem);
  max-height: min(85vh, 48rem);
  padding: 0;
  overflow: auto;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--ink);
  background: var(--paper-raised);
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background: rgba(7, 18, 17, 0.62);
}

.primer-body,
.legal-body {
  padding: 1.4rem clamp(1rem, 4vw, 2rem) 2rem;
}

.primer-body h2 {
  margin-top: 0;
  font-size: 2rem;
}

.dialog-actions {
  justify-content: flex-end;
  margin-top: 1.5rem;
}

.legal-close-row {
  position: sticky;
  z-index: 2;
  top: 0;
  display: flex;
  justify-content: flex-end;
  padding: 0.6rem 0;
  background: var(--paper-raised);
}

.legal-body h2 {
  margin-top: 0;
  font-size: 2rem;
}

#toast {
  position: fixed;
  z-index: 90;
  bottom: 1.2rem;
  left: 50%;
  padding: 0.7rem 1rem;
  color: var(--paper-raised);
  background: var(--ink);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 1rem);
  transition: opacity 160ms ease, transform 160ms ease;
}

#toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 720px) {
  .site-header,
  main,
  .site-footer > div {
    width: min(100% - 1.25rem, var(--measure));
  }

  .hero {
    padding-top: 1.7rem;
  }

  .tool-heading,
  .capture,
  .section-heading,
  .stats-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .privacy-mark {
    flex: auto;
  }

  .instrument {
    min-height: 13rem;
    padding-right: 0.65rem;
    padding-left: 0.65rem;
  }

  .readout {
    grid-template-columns: 7rem 1fr 1rem;
    min-height: 6.5rem;
    padding: 0.8rem;
  }

  #live-note {
    font-size: 2.6rem;
  }

  .piano {
    min-height: 4.8rem;
  }

  .piano-key {
    height: 4.2rem;
  }

  .piano-key--black {
    height: 2.8rem;
  }

  .piano-key span {
    display: none;
  }

  .capture-actions .button {
    flex: 1 1 11rem;
  }

  .result-lead {
    grid-template-columns: 1fr;
  }

  .result-lead > strong {
    text-align: left;
  }

  .section-heading,
  .stats-heading {
    display: flex;
  }

  .segmented {
    width: 100%;
  }

  .segmented button {
    flex: 1;
  }

  .chart-scale,
  .chart-row {
    grid-template-columns: 5rem 1fr;
  }

  .chart-scale {
    grid-template-columns: 5rem repeat(5, 1fr);
  }

  .chart-label {
    font-size: 0.66rem;
  }

  .distribution li {
    grid-template-columns: 7rem 1fr 2rem;
  }

  .type-cards {
    grid-template-columns: 1fr;
  }

  #type-drawer {
    width: 100%;
    max-width: none;
    max-height: 88vh;
    margin: auto 0 0;
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: 0.75rem 0.75rem 0 0;
  }
}

@media (max-width: 460px) {
  .readout {
    grid-template-columns: 1fr 1.2rem;
  }

  .readout-detail {
    grid-column: 1 / -1;
    margin-top: 0.4rem;
  }

  .tuning-shape {
    grid-row: 1;
    grid-column: 2;
  }

  .chart-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .chart-controls select {
    min-width: 0;
    width: 100%;
  }

  .range-chart {
    margin-right: -0.5rem;
    margin-left: -0.5rem;
    padding: 0.55rem;
  }

  .chart-scale,
  .chart-row {
    grid-template-columns: 4.2rem 1fr;
    gap: 0.35rem;
  }

  .chart-scale {
    grid-template-columns: 4.2rem repeat(5, 1fr);
  }

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

  .evidence-grid div + div {
    padding-left: 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .distribution li {
    grid-template-columns: 6.5rem 1fr 2rem;
    font-size: 0.7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .piano {
    transform: none;
  }
}

@media print {
  .site-header,
  .primary-nav,
  .type-nav,
  .capture-actions,
  .site-footer,
  dialog,
  #toast {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  .tool,
  .result-panel {
    box-shadow: none;
  }
}