:root {
  color-scheme: light;
  --bg: #faf4ed;
  --panel: #fffaf3;
  --panel-2: #fcf7f0;
  --panel-raised: #f2e9e1;
  --border: #dfdad9;
  --border-strong: #cecacd;
  --text: #575279;
  --muted: #6a6683;
  --faint: #756f85;
  --accent: #b4637a;
  --accent-strong: #9c4f66;
  --accent-ink: #ffffff;
  --danger: #b4637a;
  --fretboard: #f2e9e1;
  --open-bg: #faf4ed;
  --fret-wire: #cecacd;
  --nut: #575279;
  --string: #9893a5;
  --inlay: #dfdad9;
  --marker-ring: #575279;
  --piano-white: #fffaf3;
  --piano-black: #575279;
  --piano-border: #cecacd;
  --piano-label: #797593;
  --bg-glow: rgba(180, 99, 122, 0.06);
  --practice-section-a: rgba(180, 99, 122, 0.06);
  --practice-section-b: rgba(40, 105, 131, 0.05);
  --selection: rgba(180, 99, 122, 0.1);
  --shadow: 0 24px 60px rgba(87, 82, 121, 0.14);
  --shadow-soft: 0 8px 24px rgba(87, 82, 121, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #191724;
  --panel: #1f1d2e;
  --panel-2: #1c1a29;
  --panel-raised: #26233a;
  --border: #2a2740;
  --border-strong: #362f50;
  --text: #e0def4;
  --muted: #908caa;
  --faint: #88859e;
  --accent: #eb6f92;
  --accent-strong: #f087a5;
  --accent-ink: #111111;
  --danger: #f87171;
  --fretboard: #1d1b2a;
  --open-bg: #1c1a29;
  --fret-wire: #605b79;
  --nut: #c8c5de;
  --string: #b0aec2;
  --inlay: #362f50;
  --marker-ring: #ffffff;
  --piano-white: #26233a;
  --piano-black: #100f17;
  --piano-border: #362f50;
  --piano-label: #908caa;
  --bg-glow: rgba(235, 111, 146, 0.07);
  --practice-section-a: rgba(235, 111, 146, 0.07);
  --practice-section-b: rgba(144, 140, 170, 0.06);
  --selection: rgba(235, 111, 146, 0.13);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  --shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.4);
  }
}

.fretboard-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  margin-top: 4px;
  padding: 6px 0 2px;
  scrollbar-color: var(--border-strong) transparent;
  scrollbar-width: thin;
}

.fretboard {
  display: block;
  user-select: none;
}

.note-marker-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
}

.note-marker-travel {
  animation: note-marker-travel 0.9s linear infinite;
}

.string-label {
  font-family: var(--font-mono);
}

.string-number {
  fill: var(--faint);
  font-size: 11px;
  font-weight: 700;
}

.string-note {
  fill: var(--muted);
  font-size: 12.5px;
}

.fret-number {
  fill: var(--faint);
  font-family: var(--font-mono);
  font-size: 11px;
}

.fret-number.is-octave {
  fill: var(--accent);
  font-weight: 750;
}

.fret-number.is-inlay {
  fill: color-mix(in srgb, var(--accent) 55%, var(--faint));
  font-weight: 650;
}

.piano-view {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.piano-scroll {
  overflow-x: auto;
  padding: 8px 0 4px;
  scrollbar-color: var(--border-strong) transparent;
  scrollbar-width: thin;
}

.piano {
  display: block;
}

.piano-key.is-playable {
  cursor: pointer;
}

.piano-key.is-playable:hover rect {
  filter: brightness(1.06);
}

.piano-practice {
  pointer-events: none;
}

.piano-note-label {
  fill: var(--piano-label);
  font-family: var(--font-mono);
  font-size: 10px;
}

.piano-layer-label rect {
  fill: var(--panel);
  stroke: var(--border);
  stroke-width: 0.8;
}

.piano-layer-label text {
  fill: var(--text);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
}

.string-editor {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 5px 14px;
}

.string-column {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 5px;
}

.string-row {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 7px;
}

.string-index {
  display: grid;
  width: 22px;
  height: 22px;
  flex: none;
  place-items: center;
  border-radius: 6px;
  background: var(--panel-raised);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.string-labels {
  transform: translateX(var(--neck-scroll, 0px));
  pointer-events: none;
}

.marker-hit {
  fill: transparent;
}

.string-gutter {
  fill: var(--panel);
  opacity: 0;
}

.fretboard-scroll.is-scrolled .string-gutter {
  opacity: 1;
}

/* Practice Lab's static pages: Graph's editorial rhythm (serif display, kicker, lede,
   measured columns, artwork-first) in the app's own palette and fretboard. Palette tokens
   and the figure rules are prepended at build time (site/css.ts). */

@font-face {
  font-family: "Source Serif 4";
  src: url("fonts/source-serif-latin-ext.woff2") format("woff2-variations");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
  unicode-range:
    U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Source Serif 4";
  src: url("fonts/source-serif-latin.woff2") format("woff2-variations");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
  unicode-range:
    U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Source Serif 4";
  src: url("fonts/source-serif-latin-italic.woff2") format("woff2-variations");
  font-weight: 200 900;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Inter Variable";
  src: url("fonts/inter-latin-ext.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-display: swap;
  unicode-range:
    U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Inter Variable";
  src: url("fonts/inter-latin.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-display: swap;
  unicode-range:
    U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --serif: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-ui: "Inter Variable", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --wide: 78rem;
  --content: 68rem;
  --measure: 38rem;
  --radius: 14px;
}

* {
  box-sizing: border-box;
}
html {
  scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background:
    radial-gradient(
      60rem 30rem at 85% -10%,
      color-mix(in srgb, var(--accent) 9%, transparent),
      transparent 70%
    ),
    var(--bg);
  color: var(--text);
  font: 1.0625rem / 1.65 var(--font-ui);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection {
  background: color-mix(in srgb, var(--accent) 30%, transparent);
}
h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 450;
  font-optical-sizing: auto;
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin: 0 0 0.45em;
  text-wrap: balance;
}
h1 {
  font-size: clamp(2.7rem, 5.6vw, 4.9rem);
  max-width: 19ch;
}
h2 {
  font-size: clamp(2rem, 3.6vw, 3.1rem);
}
h3 {
  font-size: 1.55rem;
}
.h-small {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
}
p {
  margin: 0 0 1em;
  max-width: var(--measure);
  text-wrap: pretty;
}
a {
  color: var(--accent-strong);
  text-decoration-color: color-mix(in srgb, currentColor 40%, transparent);
  text-underline-offset: 4px;
}
a:hover {
  color: var(--accent);
}
:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 4px;
  border-radius: 4px;
}
code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.1em 0.4em;
  border-radius: 6px;
  background: var(--panel-raised);
}
.muted {
  color: var(--muted);
}
.skip-link {
  position: fixed;
  top: 0.75rem;
  left: var(--gutter);
  z-index: 50;
  padding: 0.6rem 1rem;
  background: var(--text);
  color: var(--bg);
  border-radius: 8px;
  transform: translateY(-200%);
}
.skip-link:focus {
  transform: none;
}
.wrap {
  max-width: var(--content);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap-wide {
  max-width: var(--wide);
}
.kicker {
  font-size: 0.74rem;
  font-weight: 650;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.1rem;
}
.lede {
  font-size: clamp(1.15rem, 1.7vw, 1.35rem);
  line-height: 1.55;
  color: var(--muted);
  max-width: 40rem;
}

/* Text styles: terms, app chips, degree tokens, figures in text */
mark,
.term {
  padding: 0 0.15em;
  border-radius: 3px;
  background: linear-gradient(transparent 58%, color-mix(in srgb, var(--accent) 24%, transparent) 58%);
  color: inherit;
  font-weight: 600;
}
.chip {
  display: inline-block;
  padding: 0.05em 0.6em;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--panel);
  font-size: 0.86em;
  font-weight: 600;
  white-space: nowrap;
}
.chip-on {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}
.deg {
  display: inline-block;
  min-width: 1.6em;
  padding: 0 0.35em;
  border: 2px solid var(--accent);
  border-radius: 999px;
  font: 700 0.8em / 1.5 var(--font-mono);
  text-align: center;
  vertical-align: 0.05em;
}
.num {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  color: var(--accent-strong);
  font-variant-numeric: lining-nums;
}
.pull {
  margin: clamp(3rem, 7vw, 5rem) 0 0;
  max-width: 24ch;
  font: italic 400 clamp(1.8rem, 3.6vw, 2.9rem) / 1.15 var(--serif);
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.pull::before {
  content: "“";
  color: var(--accent);
}
.pull::after {
  content: "”";
  color: var(--accent);
}
.lead-in {
  font-size: 1.18rem;
  line-height: 1.55;
  color: var(--text);
}

/* Stat band: big numbers that are true of the app */
.stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: clamp(3rem, 6vw, 4.5rem);
  padding-block: 1.75rem;
  border-block: 1px solid var(--border);
}
.stats div {
  display: grid;
  gap: 0.2rem;
}
.stats strong {
  font: italic 450 clamp(2.2rem, 4vw, 3.2rem) / 1 var(--serif);
  color: var(--accent-strong);
  font-variant-numeric: lining-nums;
}
.stats span {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Screenshot captions and galleries */
.shot figcaption {
  margin-top: 0.75rem;
  font-size: 0.86rem;
  color: var(--muted);
}
.shot figcaption b {
  color: var(--text);
  font-weight: 600;
}
.gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2rem);
}
.gallery-lead {
  grid-column: 1 / -1;
}
.phones {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 3vw, 2.5rem);
  align-items: start;
}
.phones .shot img {
  border-radius: 28px;
}

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: var(--wide);
  margin-inline: auto;
  padding: 0.6rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0;
  color: var(--text);
  font: 450 1.45rem var(--serif);
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
}
.wordmark-dot {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent);
}
.topbar-links {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2.5vw, 2rem);
}
.topbar-links a:not(.button) {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
}
.topbar-links a[aria-current="page"],
.topbar-links a:not(.button):hover {
  color: var(--text);
}

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.7rem 1.3rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background 0.15s,
    transform 0.15s;
}
.button:hover {
  background: var(--panel-raised);
  color: var(--text);
}
.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.button-primary:hover {
  background: var(--accent-strong);
  color: var(--accent-ink);
  transform: translateY(-1px);
}
.button-small {
  min-height: 2.4rem;
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2rem;
}
.text-link {
  font-weight: 600;
  text-decoration: none;
}

/* Hero */
.hero {
  padding-block: clamp(3.5rem, 9vw, 7rem) clamp(2rem, 4vw, 3rem);
}

/* Board figures: the app's SVG on its own panel, scaled to the column. */
.board-figure {
  margin: 0;
}
.board-figure-art {
  padding: clamp(0.75rem, 2vw, 1.5rem);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}
.board-figure-art .fretboard-scroll {
  overflow: visible;
  margin: 0;
  padding: 0;
}
.board-figure-art svg {
  display: block;
  width: 100%;
  height: auto;
}
.board-figure-hero .board-figure-art {
  padding: clamp(1rem, 3vw, 2.25rem);
}
.board-figure figcaption {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: baseline;
  justify-content: space-between;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.88rem;
}
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text);
}
.legend li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.legend-swatch {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
}
.caption-text {
  max-width: 34rem;
}

/* Features: text and figure side by side, alternating. */
.feature {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding-block: clamp(4rem, 9vw, 7rem) 0;
}
.feature-flip .feature-text {
  order: 2;
}
.feature-text p:not(.kicker) {
  color: color-mix(in srgb, var(--text) 82%, var(--muted));
}
.facts {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--border);
}
.facts li {
  padding: 0.75rem 0 0.75rem 1.4rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  font-size: 0.95rem;
}
.facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.25rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  border: 2px solid var(--accent);
}

/* Screenshots of the real app, one per theme, framed like the board panels. */
.shot {
  margin: 0;
}
.shot img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.shot-dark {
  display: none;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .shot-light {
    display: none;
  }
  :root:not([data-theme="light"]) .shot-dark {
    display: block;
  }
}
:root[data-theme="dark"] .shot-light {
  display: none;
}
:root[data-theme="dark"] .shot-dark {
  display: block;
}

/* Chapters: a short head, then the screenshots carry the detail */
.chapter {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
  padding-block: clamp(4.5rem, 10vw, 7.5rem) 0;
}
.chapter-head {
  display: grid;
  gap: 0.25rem;
  max-width: 46rem;
}
.chapter-head p {
  margin-bottom: 0.4em;
}
.chapter-head-split {
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(1.5rem, 5vw, 4.5rem);
  align-items: end;
  max-width: none;
}
.chapter-head-split h2 {
  margin-bottom: 0;
}
.shot-wide img {
  box-shadow: var(--shadow);
}
.gallery-plan {
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  align-items: start;
}
.gallery-plan .gallery-lead {
  grid-column: auto;
  grid-row: span 2;
}
.pull-inline {
  margin: 0;
  align-self: center;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.tag-cloud li {
  padding: 0.3rem 0.85rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--panel);
  font-size: 0.88rem;
  font-weight: 550;
}
.tag-cloud li:nth-child(4n + 1) {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  background: color-mix(in srgb, var(--accent) 9%, var(--panel));
}
.phones-band {
  margin-top: clamp(4.5rem, 10vw, 7.5rem);
  padding-block: clamp(3.5rem, 8vw, 6rem);
  background: linear-gradient(180deg, var(--panel-2), color-mix(in srgb, var(--accent) 6%, var(--panel-2)));
  border-block: 1px solid var(--border);
}
.phones-band .phones {
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
}
.phones .shot figcaption {
  text-align: center;
  font-weight: 600;
  color: var(--text);
}

/* Hero screenshot and the three pillars under it */
.hero-shot {
  margin-top: 0.5rem;
}
.pillars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2.5rem);
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
}
.pillars > div {
  padding-top: 1rem;
  border-top: 2px solid var(--accent);
}
.pillars h3 {
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}
.pillars p {
  margin: 0;
  color: var(--muted);
}

/* A feature whose figure runs full width under the text */
.feature-wide {
  grid-template-columns: minmax(0, 1fr);
}
.feature-wide .feature-text p:not(.kicker) {
  max-width: 46rem;
}
.facts strong {
  font-weight: 650;
}
.exercise-grid,
.also-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.75rem clamp(1.5rem, 3vw, 2.5rem);
}
.exercise-grid h3,
.also-grid h3 {
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
}
.exercise-grid p,
.also-grid p:not(.kicker) {
  margin: 0;
  font-size: 0.95rem;
  color: color-mix(in srgb, var(--text) 78%, var(--muted));
}

/* The rest of the practice room */
.also {
  padding-block: clamp(4rem, 9vw, 7rem) 0;
}
.also-grid > div {
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
}
.also-grid .kicker {
  margin-bottom: 0.6rem;
}

/* Why it is built this way: a numbered list, because the ideas build on each other */
.science {
  margin-top: clamp(5rem, 10vw, 8rem);
  padding-block: clamp(3rem, 6vw, 4.5rem);
  border-block: 1px solid var(--border);
}
.science-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2.5rem);
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: idea;
}
.science-list li {
  counter-increment: idea;
}
.science-list li::before {
  content: counter(idea);
  display: block;
  margin-bottom: 0.5rem;
  font: italic 450 2.6rem / 1 var(--serif);
  color: var(--accent);
}
.science-list h3 {
  font-size: 1.2rem;
  margin-bottom: 0.35rem;
}
.science-list p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

/* Free and Plus */
.plans {
  padding-block: clamp(5rem, 10vw, 8rem) 0;
}
.plans-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin: 2rem 0 1.5rem;
}
.plan-card {
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
}
.plan-card-plus {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  background: linear-gradient(160deg, color-mix(in srgb, var(--accent) 7%, var(--panel)), var(--panel) 60%);
}
.plan-card h3 {
  margin-bottom: 0.6rem;
}
.plan-price {
  margin: 1.25rem 0 0;
  font: 450 1.25rem / 1.4 var(--serif);
}
.plan-price .muted {
  display: block;
  font: 0.82rem var(--font-ui);
}

/* Pricing */
.hero-compact {
  padding-bottom: clamp(1.5rem, 3vw, 2.5rem);
}
.price-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  align-items: stretch;
}
.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: clamp(1.4rem, 2.5vw, 1.9rem);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
}
.price-card p {
  margin: 0;
}
.price-card > p:not(.price, .price-cadence, .price-badge) {
  flex: 1;
  margin-block: 0.9rem 1.4rem;
  color: color-mix(in srgb, var(--text) 80%, var(--muted));
  font-size: 0.95rem;
}
.price-card-featured {
  border-color: var(--accent);
  background: linear-gradient(170deg, color-mix(in srgb, var(--accent) 10%, var(--panel)), var(--panel) 65%);
  box-shadow: var(--shadow);
}
.price-badge {
  position: absolute;
  top: -0.75rem;
  left: 1.4rem;
  padding: 0.15rem 0.7rem;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.04em;
}
.price-name {
  margin: 0 0 0.6rem;
  font-size: 1.3rem;
}
.price-amount {
  font: italic 450 clamp(2.6rem, 4vw, 3.4rem) / 1 var(--serif);
  color: var(--accent-strong);
  font-variant-numeric: lining-nums;
}
.price-cadence {
  color: var(--muted);
  font-size: 0.85rem;
}
.button.is-disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}
.price-note {
  margin: 1.5rem auto 0;
  max-width: 46rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}
.section-title {
  margin-top: clamp(4rem, 8vw, 6rem);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
}
.table-scroll {
  overflow-x: auto;
}
.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.compare th,
.compare td {
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-weight: 400;
}
.compare thead th {
  font: 450 1.15rem var(--serif);
  border-bottom: 2px solid var(--border-strong);
}
.compare td,
.compare thead th:not(:first-child) {
  width: 7.5rem;
  text-align: center;
}
.compare-group th {
  padding-top: 1.6rem;
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 650;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.cell-yes {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-strong);
  font-weight: 700;
}
.cell-no {
  color: var(--faint);
}
.soon {
  padding: 0.05rem 0.45rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.small {
  font-size: 0.85rem;
  margin-top: 1rem;
}
.promise {
  display: grid;
  justify-items: center;
  text-align: center;
}
.promise .pull {
  max-width: 22ch;
}
.promise-detail {
  margin-top: 1.25rem;
  color: var(--muted);
}
.faq-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem clamp(2rem, 5vw, 4rem);
  margin: 0;
}
.faq-list dt {
  margin-bottom: 0.4rem;
  font: 450 1.2rem / 1.3 var(--serif);
}
.faq-list dd {
  margin: 0;
  color: color-mix(in srgb, var(--text) 80%, var(--muted));
  font-size: 0.97rem;
}

/* Closing */
.closing {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 5vw, 4.5rem);
  margin-top: clamp(5rem, 10vw, 8rem);
  padding-block: clamp(3rem, 6vw, 4.5rem);
  border-top: 1px solid var(--border);
}
.languages {
  font: 1.15rem / 1.7 var(--serif);
}

/* Footer */
.footer {
  margin-top: clamp(3rem, 8vw, 6rem);
  padding-block: 2.5rem 3rem;
  border-top: 1px solid var(--border);
  background: var(--panel-2);
  font-size: 0.85rem;
  color: var(--muted);
}
.footer-inner {
  max-width: var(--wide);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
}
.footer .wordmark {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}
.footer-company {
  line-height: 1.7;
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 0.25rem 2.5rem;
  align-content: start;
}
.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 2.25rem;
  color: var(--muted);
}
.footer-links a:hover {
  color: var(--text);
}

@media (max-width: 1000px) {
  .science-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 1080px) {
  .price-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 1.75rem;
  }
}
@media (max-width: 860px) {
  .chapter-head-split,
  .gallery-plan {
    grid-template-columns: minmax(0, 1fr);
  }
  .gallery-plan .gallery-lead {
    grid-row: auto;
  }
  .faq-list {
    grid-template-columns: minmax(0, 1fr);
  }
  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .gallery {
    grid-template-columns: minmax(0, 1fr);
  }
  .feature,
  .closing,
  .plans-grid,
  .pillars,
  .exercise-grid,
  .also-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .feature-flip .feature-text {
    order: 0;
  }
}
@media (max-width: 560px) {
  .phones {
    grid-template-columns: minmax(0, 1fr);
    max-width: 18rem;
    margin-inline: auto;
  }
  .price-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}
@media (max-width: 520px) {
  .science-list {
    grid-template-columns: minmax(0, 1fr);
  }
  .topbar-links a:not(.button):first-child {
    display: none;
  }
  .board-figure-art {
    overflow-x: auto;
  }
  .board-figure-hero .board-figure-art svg {
    min-width: 640px;
  }
}
/* Phones: the wordmark and the open button only. */
@media (max-width: 420px) {
  .topbar-links a:not(.button) {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  .button {
    transition: none;
  }
}

/* Legal pages: a reading column in the serif, numbered sections and clauses, a sticky contents
   list beside it on wide screens. */
.legal-hero {
  padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(1.5rem, 3vw, 2.25rem);
}
.legal-hero h1 {
  font-size: clamp(2.4rem, 4.6vw, 3.8rem);
}
.legal-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}
.legal-tabs a {
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 550;
  text-decoration: none;
}
.legal-tabs a:hover {
  border-color: var(--border-strong);
  color: var(--text);
}
.legal-tabs a[aria-current="page"] {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}
.legal-version {
  color: var(--muted);
  font-size: 0.92rem;
  font-variant-numeric: tabular-nums;
}
.legal-layout {
  display: grid;
  grid-template-columns: 14rem minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
  padding-bottom: clamp(4rem, 8vw, 6rem);
  counter-reset: section;
}
.legal-toc {
  position: sticky;
  top: 6rem;
  font-size: 0.9rem;
}
.legal-toc-title {
  margin-bottom: 0.6rem;
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.legal-toc ol {
  display: grid;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: toc;
  border-left: 1px solid var(--border);
}
.legal-toc li {
  counter-increment: toc;
}
.legal-toc a {
  display: flex;
  gap: 0.6rem;
  padding: 0.3rem 0 0.3rem 0.9rem;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--muted);
  line-height: 1.35;
  text-decoration: none;
}
.legal-toc a::before {
  content: counter(toc);
  min-width: 1.1rem;
  font: italic 500 0.95rem / 1.35 var(--serif);
  color: var(--accent);
}
.legal-toc a:hover {
  border-left-color: var(--accent);
  color: var(--text);
}
.legal {
  max-width: 42rem;
  font: 1.12rem / 1.7 var(--serif);
  font-optical-sizing: auto;
}
.legal p,
.legal li {
  max-width: none;
}
.legal strong {
  font-weight: 620;
}
.legal-summary {
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
  padding: clamp(1.25rem, 3vw, 1.9rem) clamp(1.25rem, 3vw, 2.1rem);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  background: var(--panel);
  font-family: var(--font-ui);
  font-size: 1.02rem;
  line-height: 1.6;
}
.legal-summary h2 {
  font-size: 1.5rem;
  margin-bottom: 0.9rem;
}
.legal-summary ul {
  display: grid;
  gap: 0.7rem;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}
.legal-summary li {
  position: relative;
  padding-left: 1.6rem;
}
.legal-summary li::before {
  content: "";
  position: absolute;
  left: 0.15rem;
  top: 0.55em;
  width: 0.55rem;
  height: 0.55rem;
  border: 2px solid var(--accent);
  border-radius: 999px;
}
.legal-summary-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}
.legal-section {
  counter-increment: section;
  counter-reset: clause;
  scroll-margin-top: 5.5rem;
  padding-top: clamp(1.75rem, 3.5vw, 2.5rem);
  border-top: 1px solid var(--border);
  margin-top: clamp(1.75rem, 3.5vw, 2.5rem);
}
.legal-section h2 {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  margin-bottom: 1rem;
}
.legal-section h2::before {
  content: counter(section);
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}
.clauses {
  display: grid;
  gap: 0.9rem;
  margin: 0 0 1em;
  padding: 0;
  list-style: none;
}
.clauses > li {
  counter-increment: clause;
  position: relative;
  padding-left: 2.9rem;
}
.clauses > li::before {
  content: counter(section) "." counter(clause);
  position: absolute;
  left: 0;
  top: 0.2em;
  font: 600 0.78rem / 1.6 var(--font-ui);
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}
.legal-list {
  display: grid;
  gap: 0.5rem;
  margin: 0 0 1em;
  padding-left: 1.3rem;
}
.legal-list li::marker {
  color: var(--accent);
}
.company-card {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem 1.5rem;
  margin: 1.25rem 0 1.5rem;
  padding: 1.25rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  font: 0.95rem / 1.45 var(--font-ui);
}
.company-card div {
  min-width: 0;
}
.company-card-wide {
  grid-column: 1 / -1;
}
.company-card dt {
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.company-card dd {
  margin: 0.1rem 0 0;
  overflow-wrap: anywhere;
}
.legal-table {
  width: 100%;
  min-width: 36rem;
  margin-bottom: 1.25rem;
  border-collapse: collapse;
  font: 0.9rem / 1.45 var(--font-ui);
}
.legal-table th,
.legal-table td {
  padding: 0.7rem 0.75rem 0.7rem 0;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
.legal-table thead th {
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.legal-table tbody th {
  font-weight: 600;
}
.legal-statutory {
  padding: 1.25rem 1.4rem;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  font-size: 1.02rem;
}
.legal-statutory h3 {
  font-size: 1.25rem;
}
/* An open value in a draft: visible in previews, refused by a release build. */
.draft {
  padding: 0 0.3em;
  border: 1px dashed color-mix(in srgb, var(--danger) 70%, transparent);
  border-radius: 4px;
  background: color-mix(in srgb, var(--danger) 10%, transparent);
  font-family: var(--font-ui);
  font-size: 0.9em;
}
@media (max-width: 900px) {
  .legal-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .legal-toc {
    position: static;
  }
  .legal-toc ol {
    grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
    border-left: 0;
  }
  .legal-toc a {
    padding-left: 0;
    border-left: 0;
  }
}
@media (max-width: 560px) {
  .company-card {
    grid-template-columns: minmax(0, 1fr);
  }
  .clauses > li {
    padding-left: 2.4rem;
  }
}
.legal-form ul {
  display: grid;
  gap: 0;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}
.legal-form li {
  padding: 0.75rem 0 1.6rem;
  border-bottom: 1px solid var(--border-strong);
}

/* The 404 page: the hero alone, with room under it before the footer. */
.not-found {
  padding-bottom: clamp(5rem, 12vw, 9rem);
}