:root {
  --blue: var(--brand);
}

main {
  max-width: 1240px;
  padding: 34px 24px 0;
  margin: auto
}

.intro {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
  margin-bottom: 26px
}

h1 {
  font-size: clamp(29px, 3.4vw, 46px);
  line-height: 1.2;
  letter-spacing: -1.7px;
  margin: 10px 0
}

.chapter {
  display: flex;
  align-items: center;
  gap: 16px;
  color: #c1d3e3;
  font: 56px Georgia, serif
}

.chapter small {
  max-width: 64px;
  color: #849bae;
  font: 9px system-ui, sans-serif;
  letter-spacing: 2px
}

p {
  font-size: 16px;
  line-height: 1.6;
  color: var(--muted);
  margin: 0
}

h2 {
  font-size: 20px;
  margin: 0
}

h3 {
  font-size: 18px;
  margin: 0 0 9px
}

.lab-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  border-bottom: 1px solid #dce1ef;
  padding-bottom: 12px
}

.lab-tabs button {
  background: transparent;
  border-color: transparent;
  font-size: 15px
}

.lab-tabs button[aria-selected=true] {
  color: white;
  background: var(--blue)
}

.lab-tabs small {
  font-size: 10px;
  letter-spacing: 1px;
  margin-left: 8px;
  color: #78839b
}

.lab-tabs button[aria-selected=true] small {
  color: white
}

.studio {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 1fr);
  gap: 24px
}

.visual,
.controls,
.compare-card {
  background: white;
  border: 1px solid #dce2f0;
  border-radius: 16px
}

.visual {
  padding: 24px
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 20px
}

.panel-head span {
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--blue);
  font-weight: 700
}

canvas {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  background: white;
  border: 1px solid #ccd4e8;
  image-rendering: pixelated
}

.visual canvas {
  max-width: 490px;
  margin: auto;
  box-shadow: 0 8px 30px #1427500d
}

.legend {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin: 20px 0 10px;
  font-size: 13px;
  color: #62708c
}

.legend span {
  display: flex;
  gap: 7px;
  align-items: center
}

.legend i {
  width: 17px;
  height: 2px;
  background: #3865ec
}

.legend i.gray {
  background: #9ba5b9;
  height: 1px
}

.scale {
  font-size: 13px;
  text-align: center
}

.controls {
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 25px
}

.control label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 15px;
  font-weight: 650;
  align-items: center
}

.control output {
  font-size: 25px;
  letter-spacing: -.7px;
  color: var(--blue)
}

.control output small {
  font-size: 12px;
  letter-spacing: 0;
  margin-left: 4px
}

.control p {
  font-size: 13px;
  margin-top: 6px
}

.range-ends {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: #8792a8
}

input[type=range] {
  width: 100%;
  margin: 16px 0 6px;
  accent-color: var(--blue);
  cursor: pointer;
  height: 22px
}

.toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid #e8ecf6;
  padding-top: 18px
}

.toggles label {
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 7px
}

input[type=checkbox] {
  width: 17px;
  height: 17px;
  accent-color: var(--blue)
}

.metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px
}

.metric {
  background: #f1f4ff;
  padding: 15px;
  border-radius: 10px
}

.metric strong {
  display: block;
  font-size: 27px;
  letter-spacing: -1px;
  margin-bottom: 5px
}

.metric span {
  font-size: 12px;
  line-height: 1.5;
  color: #63708c;
  display: block
}

.warning {
  font-size: 13px;
  color: #8c4d16;
  background: #fff5e7;
  padding: 10px;
  border-radius: 8px
}

.insight {
  margin: 24px 0 44px;
  padding: 24px;
  background: #e9eeff;
  border-radius: 13px;
  display: flex;
  gap: 24px;
  align-items: center
}

.insight div {
  flex: 1
}

.insight p {
  font-size: 14px
}

.insight h3 {
  font-size: 16px
}

.insight button {
  white-space: nowrap
}

.learning>h2 {
  font-size: 27px;
  margin-bottom: 25px
}

.definitions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px
}

.definitions article {
  padding-top: 22px;
  border-top: 2px solid #ced7f2
}

.definitions b {
  display: block;
  font-size: 12px;
  letter-spacing: 1.2px;
  color: var(--blue);
  margin-bottom: 16px
}

.definitions p,
.theory p {
  font-size: 15px
}

.theory {
  margin-top: 30px;
  padding: 26px;
  border: 1px solid #d8deed;
  border-radius: 14px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 38px;
  background: white
}

.formula {
  font-size: 16px;
  line-height: 1.9;
  color: var(--blue);
  border-left: 2px solid #dce3fb;
  padding-left: 30px
}

.compare-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 22px
}

.compare-heading p {
  font-size: 14px;
  margin-top: 7px
}

.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px
}

.compare-card {
  display: flex;
  flex-direction: column;
  padding: 30px
}

.compare-card>h2 {
  margin-bottom: 26px
}

.compare-card canvas {
  width: min(100%, 490px);
  margin: 0 auto;
  box-shadow: 0 8px 30px #1427500d
}

.badge {
  display: inline-grid;
  place-items: center;
  font-size: 13px;
  width: 27px;
  height: 27px;
  background: #e7edff;
  color: var(--blue);
  border-radius: 7px;
  margin-right: 7px
}

.pink {
  background: #ffecf5;
  color: #aa356d
}

.compact {
  margin-top: 30px;
  padding: 30px 26px 26px;
  border: 0;
  border-top: 1px solid #e4ebf2;
  gap: 20px
}

.compare-guide {
  margin: 30px 0 44px;
  padding: 24px 28px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 12px 34px rgba(32, 56, 79, .07)
}

.compare-guide .legend {
  margin: 0 0 12px
}

.compare-guide .scale {
  margin: 0
}

.future {
  text-align: center;
  padding: 65px 20px 85px
}

.future>span {
  font-size: 60px;
  color: var(--blue)
}

.future h2 {
  font-size: 32px;
  margin: 12px 0
}

.future p:not(.eyebrow) {
  max-width: 490px;
  margin: 0 auto 28px
}

.future .eyebrow {
  margin-top: 20px
}

.tag {
  font-size: 13px;
  border: 1px solid #d7deef;
  border-radius: 30px;
  padding: 10px 14px
}

[hidden] {
  display: none !important
}

@media(max-width:800px) {
  .studio {
    grid-template-columns: 1fr
  }

  .definitions {
    grid-template-columns: 1fr;
    gap: 24px
  }

  .theory {
    grid-template-columns: 1fr;
    gap: 18px
  }

  .formula {
    padding-left: 18px
  }

  .insight {
    align-items: flex-start;
    flex-wrap: wrap
  }

  .comparison {
    gap: 20px
  }

  .compare-card {
    padding: 22px
  }

  .compact {
    padding: 24px 18px 22px
  }

  .metrics {
    gap: 7px
  }

  .metric {
    padding: 10px
  }

  .metric strong {
    font-size: 22px
  }

}

@media(max-width:540px) {
  main {
    padding: 26px 16px 0
  }

  .intro {
    align-items: flex-start
  }

  .chapter {
    font-size: 40px;
    gap: 10px
  }

  .lab-tabs {
    gap: 0
  }

  .lab-tabs button {
    font-size: 14px;
    padding: 10px 11px
  }

  .lab-tabs small {
    display: block;
    font-size: 9px;
    margin: 4px 0 0
  }

  .panel-head h2 {
    font-size: 17px
  }

  .comparison {
    grid-template-columns: 1fr
  }

  .compare-card {
    padding: 20px
  }

  .compact {
    margin-top: 24px;
    padding: 20px
  }

  .compare-guide {
    padding: 20px 16px
  }

  .compare-heading {
    align-items: flex-start
  }

  .compare-heading button {
    max-width: 110px
  }

  .compare-heading h2 {
    font-size: 19px
  }

  .insight {
    padding: 18px
  }

  .insight div {
    flex-basis: 100%
  }

  .controls {
    padding: 22px
  }

  .visual {
    padding: 18px
  }

  .learning>h2 {
    font-size: 24px
  }
}