:root {
  color-scheme: light;
  --ink: #233a32;
  --muted: #52665f;
  --line: #c7d0cc;
  --blue: #2558cc;
  --paper: #fff;
  --wash: #f6f7f4;
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Arial,
    sans-serif;
  color: var(--ink);
  background: var(--wash);
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
a {
  color: #24685f;
  text-underline-offset: 3px;
}
button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}
button,
select,
input,
textarea {
  max-width: 100%;
}
button {
  min-height: 42px;
  border: 1px solid #9caca4;
  border-radius: 8px;
  background: #fff;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 600;
  transition:
    box-shadow 0.15s,
    background 0.15s;
}
button:hover {
  background: #f0f4f0;
  box-shadow: 0 2px 7px #233a321c;
}
button:disabled {
  opacity: 0.45;
  cursor: default;
}
button.primary,
.primary-link {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
button.primary:hover {
  background: #1744af;
}
.shell {
  width: min(100% - 40px, 1440px);
  margin: auto;
}
.site-header-inner {
  width: min(100% - 40px, 1440px);
  margin: auto;
}
.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}
.pill {
  border: 2px solid #191c18;
  border-radius: 28px;
  padding: 10px 16px;
  background: #fff;
}
.intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 50px;
  padding: 26px 0 24px;
  align-items: center;
}
.breadcrumb {
  grid-column: 1/-1;
  font-size: 14px;
  margin: 0;
}
h1 {
  font-size: clamp(26px, 2.5vw, 36px);
  letter-spacing: -0.035em;
  line-height: 1.15;
  margin: 0 0 10px;
}
h2 {
  font-size: 23px;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}
h3 {
  font-size: 17px;
  margin: 0 0 12px;
}
p {
  line-height: 1.6;
  margin: 0 0 14px;
}
.intro p {
  margin-bottom: 5px;
}
.muted {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  font-weight: 700;
  color: #586f5c;
}
.privacy {
  font-size: 13px;
  color: #46685b;
}
.workspace {
  display: grid;
  grid-template-columns: 260px minmax(300px, 1fr) 300px;
  gap: 18px;
  align-items: start;
}
.left-panel,
.right-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  min-width: 0;
}
.preview-panel {
  position: sticky;
  top: 104px;
  min-width: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
}
.preview-panel > .button-row {
  justify-content: space-between;
  align-items: center;
}
.preview-panel h2 {
  font-size: 19px;
  margin: 0;
}
.source-line {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 14px 0;
  font-size: 14px;
}
.preview-stage {
  background: #edf0e9;
  border: 1px solid #dce2da;
  border-radius: 8px;
  padding: 20px;
  overflow: hidden;
  min-height: 360px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
}
.preview-stage canvas {
  display: block;
  max-width: 100%;
  height: auto;
  max-height: 66vh;
  object-fit: contain;
  width: auto;
  background: #fff;
  box-shadow: 0 3px 10px #233a3212;
}
.single-study {
  width: 100%;
}
.single-study canvas {
  margin: auto;
}
.preview-actions {
  display: flex;
  gap: 8px;
  padding-top: 15px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 13px;
  font-weight: 600;
  min-width: 0;
  margin-bottom: 15px;
}
.field input:not([type="range"]):not([type="color"]),
select,
textarea {
  width: 100%;
  border: 1px solid #aab8b1;
  border-radius: 7px;
  padding: 10px;
  background: #fff;
  min-height: 42px;
  font-weight: 400;
}
.field input[type="color"] {
  width: 100%;
  height: 44px;
  padding: 4px;
  border: 1px solid var(--line);
  background: white;
  border-radius: 6px;
}
.field input[type="file"] {
  font-size: 12px;
  min-width: 0;
}
input[type="range"] {
  width: 100%;
  accent-color: #416c59;
}
output {
  font-size: 11px;
  color: #5f7167;
}
.check {
  display: flex;
  gap: 9px;
  align-items: start;
  margin: 13px 0;
  font-size: 13px;
  line-height: 1.4;
}
.check input {
  width: 17px;
  height: 17px;
  flex: none;
  order: -1;
}
.check output {
  display: none;
}
.control-group {
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid #e1e6df;
}
.control-group:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0;
}
.button-row > .field {
  flex: 1;
  min-width: 80px;
  margin-bottom: 0;
}
.button-row > span {
  flex-basis: 100%;
  font-size: 13px;
}
.button-row button {
  font-size: 13px;
}
details {
  border-top: 1px solid #dde4dd;
  padding: 15px 0;
}
summary {
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 12px;
}
.exercise-box {
  border-left: 3px solid #a5bca1;
  padding-left: 14px;
  margin-bottom: 25px;
}
.exercise-box h3 {
  font-size: 16px;
}
.exercise-box p,
.exercise-box li {
  font-size: 13px;
  line-height: 1.6;
}
.exercise-box ol {
  padding-left: 18px;
}
.exercise-box li {
  margin-bottom: 9px;
}
#status {
  min-height: 36px;
  padding: 10px 14px;
  border: 1px solid #c9d7ed;
  background: #f0f5fe;
  color: #244a80;
  border-radius: 8px;
  font-size: 13px;
  margin: 0 0 15px;
}
#routineBar:not(:empty) {
  padding: 15px;
  border: 1px solid #c9d7bd;
  background: #f0f5ea;
  border-radius: 10px;
  margin: 0 0 15px;
}
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  width: 100%;
  align-items: center;
}
.compare-grid canvas {
  width: 100%;
  height: auto;
}
.compare-grid figure {
  margin: 0;
  min-width: 0;
}
.compare-grid figcaption {
  text-align: center;
  font-size: 12px;
  margin-top: 8px;
}
.composition-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 15px;
  width: 100%;
}
.composition-board figure {
  margin: 0;
  min-width: 0;
}
.composition-board canvas {
  width: 100%;
  height: auto;
}
.composition-board figcaption {
  padding-top: 6px;
  font-size: 12px;
}
.value-scale {
  display: flex;
  gap: 8px;
  width: 100%;
}
.value-scale > div {
  flex: 1;
  text-align: center;
  font-size: 11px;
}
.value-swatch {
  display: block;
  height: 28px;
  border: 1px solid #8b958c;
  margin-bottom: 5px;
}
.timer-display {
  font-variant-numeric: tabular-nums;
  font-size: 56px;
  line-height: 1.1;
  font-weight: 650;
  letter-spacing: -0.04em;
}
.quiet-reference {
  min-height: 300px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 25px;
}
.color-patch {
  width: min(100%, 330px);
  height: 300px;
  border-radius: 4px;
  border: 1px solid #ffffff55;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 20px;
}
.neutral-patch {
  background: #c7c7c7;
  color: #222;
}
.color-intro {
  display: grid;
  place-items: center;
  min-height: 280px;
  font-size: 24px;
  max-width: 100%;
  text-align: center;
}
.secret-round #referenceControls,
.secret-round #handoff,
.secret-round .source-line {
  visibility: hidden;
}
.secret-round #exerciseInstructions {
  visibility: hidden;
}
.help {
  max-width: 1000px;
  margin: 42px auto;
}
.help h2 {
  margin-top: 30px;
}
.help p,
.help li {
  color: #4a6057;
  font-size: 15px;
  line-height: 1.7;
}
.help li {
  margin: 8px 0;
}
.help details {
  padding: 14px 0;
}
.help a {
  margin-right: 15px;
}
figure {
  margin: 0;
}
#exitFocus {
  display: none;
  position: fixed;
  right: 20px;
  top: 16px;
  z-index: 500;
}
.practice-focus header,
.practice-focus .intro,
.practice-focus .left-panel,
.practice-focus .right-panel,
.practice-focus .help,
.practice-focus .site-footer,
.practice-focus #routineBar {
  display: none !important;
}
.practice-focus .workspace {
  display: block;
  max-width: 1100px;
  margin: 65px auto 20px;
}
.practice-focus .preview-panel {
  position: static;
}
.practice-focus #exitFocus {
  display: block;
}
.practice-focus .preview-stage canvas {
  max-height: 78vh;
}
.site-footer {
  margin-top: 45px;
}
#gridPrintOutput {
  display: none;
}
.directory-section {
  padding: 18px 0 28px;
}
.directory-heading {
  display: flex;
  justify-content: space-between;
  gap: 25px;
  align-items: start;
  margin-bottom: 20px;
}
.directory-heading p {
  max-width: 600px;
  color: var(--muted);
  font-size: 14px;
}
.filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.filters [aria-pressed="true"] {
  background: #264d3c;
  color: #fff;
}
.tool-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.tool-card {
  display: flex;
  flex-direction: column;
  color: var(--ink);
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  min-width: 0;
}
.tool-card[hidden] {
  display: none;
}
.tool-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.card-copy {
  padding: 19px;
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 12px;
}
.card-copy h3 {
  font-size: 19px;
  margin: 0;
}
.card-copy p {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
  flex: 1;
}
.card-copy strong {
  font-size: 13px;
  color: #24685f;
  margin-top: 10px;
}
.routines {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.routine-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}
.routine-card p {
  font-size: 14px;
}
.reference-library {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}
.reference-library img {
  display: block;
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: contain;
  background: #edece5;
  border-radius: 7px;
}
.reference-library figcaption {
  font-size: 13px;
  margin-top: 8px;
}
.reference-library small {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin: 3px 0 8px;
}
.reference-library a {
  font-size: 12px;
}
.exercise-directory {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
}
.exercise-directory ul {
  padding-left: 18px;
}
.exercise-directory li {
  line-height: 1.8;
  font-size: 14px;
}
.primary-link {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 7px;
  text-decoration: none;
}
.nav-links a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
canvas:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid #2673d5;
  outline-offset: 3px;
}
@media (min-width: 1500px) {
  .tool-cards {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
  .tool-card h3 {
    font-size: 17px;
  }
  .card-copy {
    padding: 15px;
  }
}
@media (max-width: 1150px) {
  .workspace {
    grid-template-columns: 210px minmax(260px, 1fr) 260px;
    gap: 12px;
  }
  .left-panel,
  .right-panel,
  .preview-panel {
    padding: 14px;
  }
  .preview-stage {
    padding: 12px;
  }
  .reference-library {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .routines {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 900px) {
  .workspace {
    grid-template-columns: minmax(0, 1fr) minmax(250px, 320px);
  }
  .preview-panel {
    grid-column: 1;
    grid-row: 1;
    position: static;
  }
  .left-panel {
    grid-column: 1;
    grid-row: 2;
  }
  .right-panel {
    grid-column: 2;
    grid-row: 1 / span 2;
  }
  .tool-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .intro {
    gap: 15px;
  }
  .preview-stage {
    min-height: 290px;
  }
  .directory-heading {
    display: block;
  }
}
@media (max-width: 600px) {
  .shell,
  .site-header-inner {
    width: calc(100% - 28px);
  }
  .nav-links {
    gap: 10px;
  }
  .nav-links a:not(.pill) {
    display: none;
  }
  .intro {
    grid-template-columns: 1fr;
    padding: 21px 0 15px;
  }
  .intro p {
    font-size: 14px;
  }
  .workspace {
    display: flex;
    flex-direction: column;
  }
  .preview-panel,
  .left-panel,
  .right-panel {
    width: 100%;
  }
  .preview-panel {
    order: 0;
  }
  .left-panel {
    order: 1;
  }
  .right-panel {
    order: 2;
  }
  .preview-stage canvas {
    max-height: 58vh;
  }
  .preview-stage {
    padding: 10px;
  }
  .timer-display {
    font-size: 48px;
  }
  .tool-cards,
  .routines,
  .exercise-directory {
    grid-template-columns: 1fr;
  }
  .reference-library {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .help {
    margin: 28px 0;
  }
  .composition-board {
    gap: 9px;
  }
  .compare-grid {
    gap: 9px;
  }
  .color-patch {
    height: 210px;
  }
  .directory-section {
    padding: 15px 0;
  }
  .directory-heading h2 {
    font-size: 23px;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}
@media print {
  .grid-paper h2 {
    font-size: 16pt;
    line-height: 1.2;
    letter-spacing: 0;
    margin: 0 0 3mm;
  }
}
@media print {
  body > *:not(#gridPrintOutput) {
    display: none !important;
  }
  html,
  body {
    margin: 0 !important;
    background: #fff !important;
  }
  #gridPrintOutput {
    display: block !important;
  }
  #gridPrintOutput .grid-paper {
    padding: 12mm;
    box-sizing: border-box;
    break-after: page;
    page-break-after: always;
    background: #fff;
    color: #111;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    font-family: Inter;
  }
  #gridPrintOutput .grid-paper:last-child {
    break-after: auto;
    page-break-after: auto;
  }
  .grid-paper h1 {
    font-size: 16pt;
    line-height: 1.2;
    letter-spacing: 0;
    margin: 0 0 3mm;
  }
  .grid-paper p {
    font-size: 9pt;
    line-height: 1.35;
    margin: 0 0 4mm;
  }
  .printed-grid {
    min-height: 0;
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .printed-grid img {
    display: block;
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
  }
  .grid-paper .print-note {
    margin: 4mm 0 0;
    font-size: 8pt;
  }
}