:root {
  color-scheme: light;
  font-family: ui-rounded, "SF Pro Rounded", "Avenir Next", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  --terms-ink: #172033;
  --terms-muted: #64748b;
  --terms-blue: #2563eb;
  --terms-violet: #6d4dcc;
  --terms-violet-deep: #5535a6;
  --terms-violet-soft: #eee9ff;
  --terms-gold: #b96912;
  --terms-gold-soft: #fff3d6;
  --terms-green: #087154;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  max-width: 100%;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--terms-ink);
  background:
    radial-gradient(circle at 8% 4%, rgb(109 77 204 / 11%), transparent 29rem),
    radial-gradient(circle at 94% 18%, rgb(185 105 18 / 8%), transparent 25rem),
    #f7f7fb;
  overscroll-behavior: none;
}

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

.terms-shell {
  width: min(100%, 1480px);
  min-width: 0;
  margin: 0 auto;
  padding: max(18px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right))
    max(18px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
}

.terms-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 22px;
  min-width: 0;
  margin-bottom: 16px;
}

.terms-header > div {
  min-width: 0;
}

.terms-eyebrow {
  margin: 0 0 4px;
  color: var(--terms-violet-deep);
  font-size: clamp(0.82rem, 1.5vw, 1rem);
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.terms-header h1 {
  max-width: 1120px;
  margin: 0;
  font-size: clamp(1.7rem, 3.7vw, 3.35rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
}

.terms-subtitle {
  margin: 7px 0 0;
  color: var(--terms-muted);
  font-size: clamp(1rem, 1.8vw, 1.35rem);
  font-weight: 700;
}

.terms-local-note {
  flex: 0 0 auto;
  margin: 4px 0 0;
  padding: 9px 14px;
  border: 1px solid #b9e5d5;
  border-radius: 999px;
  color: var(--terms-green);
  background: #ecfdf5;
  font-size: clamp(0.74rem, 1.2vw, 0.9rem);
  font-weight: 750;
  white-space: nowrap;
}

.terms-local-note span {
  margin-right: 5px;
  font-size: 0.7em;
}

.terms-board,
.terms-insight {
  min-width: 0;
  border: 1px solid rgb(203 213 225 / 82%);
  border-radius: 26px;
  background: rgb(255 255 255 / 95%);
  box-shadow: 0 20px 60px rgb(30 41 59 / 9%);
}

.terms-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.88fr);
  grid-template-areas:
    "formula formula"
    "structure details"
    "comparison comparison"
    "exploration exploration"
    "conclusion conclusion";
  gap: clamp(12px, 1.7vw, 22px);
  min-height: min(55dvh, 590px);
  padding: clamp(15px, 2.2vw, 30px);
  overflow: hidden;
}

.terms-shell [hidden] {
  display: none !important;
}

.terms-formula-card {
  grid-area: formula;
  display: grid;
  place-items: center;
  gap: 5px;
  min-width: 0;
  padding: clamp(16px, 2vw, 25px);
  border: 2px solid rgb(109 77 204 / 20%);
  border-radius: 22px;
  background: linear-gradient(135deg, #fbfaff, #f4f0ff);
  text-align: center;
}

.terms-formula-label,
.terms-panel-label {
  margin: 0;
  color: var(--terms-muted);
  font-size: clamp(0.78rem, 1.2vw, 0.94rem);
  font-weight: 850;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.terms-expression {
  margin: 0;
  color: var(--terms-violet-deep);
  font-size: clamp(3.2rem, 8vw, 6.4rem);
  font-weight: 950;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.terms-prompt {
  margin: 4px 0 0;
  color: var(--terms-muted);
  font-size: clamp(1rem, 1.8vw, 1.35rem);
  font-weight: 750;
}

.terms-structure {
  grid-area: structure;
  align-self: stretch;
  min-width: 0;
  padding: clamp(13px, 1.8vw, 22px);
  border: 1px solid #dbe4ef;
  border-radius: 22px;
  background: #f8fafc;
}

.terms-structure-row {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) auto minmax(0, 0.8fr);
  gap: clamp(10px, 1.5vw, 18px);
  align-items: center;
  min-width: 0;
}

.terms-x-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(8px, 1vw, 13px);
  min-width: 0;
}

.terms-x-block {
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: clamp(82px, 10vw, 128px);
  padding: 10px;
  border: 3px solid var(--terms-violet-deep);
  border-radius: 19px;
  color: white;
  background: linear-gradient(145deg, #8368dc, var(--terms-violet));
  box-shadow: inset 0 0 0 4px rgb(255 255 255 / 16%), 0 12px 22px rgb(85 53 166 / 18%);
  transition: transform 260ms ease, background-color 260ms ease;
}

.terms-block-symbol {
  grid-area: 1 / 1;
  font-size: clamp(2.1rem, 4.5vw, 3.8rem);
  font-style: italic;
  font-weight: 900;
}

.terms-block-current {
  grid-area: 1 / 1;
  display: grid;
  place-items: center;
  min-width: 2ch;
  min-height: 2ch;
  border-radius: 999px;
  color: var(--terms-violet-deep);
  background: white;
  font-size: clamp(1.75rem, 3.7vw, 3rem);
  font-weight: 950;
}

.terms-plus {
  color: var(--terms-muted);
  font-size: clamp(2rem, 4vw, 3.3rem);
  font-weight: 850;
}

.terms-unit-group {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(6px, 0.9vw, 10px);
  min-width: 0;
}

.terms-unit-block {
  display: grid;
  place-items: center;
  min-width: 0;
  aspect-ratio: 1;
  border: 3px solid var(--terms-gold);
  border-radius: 15px;
  color: #844408;
  background: linear-gradient(145deg, #fff8e8, var(--terms-gold-soft));
  box-shadow: inset 0 0 0 3px rgb(255 255 255 / 55%), 0 9px 18px rgb(185 105 18 / 14%);
  font-size: clamp(1.25rem, 2.8vw, 2.1rem);
  font-weight: 950;
}

.terms-structure-caption {
  margin: clamp(11px, 1.3vw, 16px) 0 0;
  text-align: center;
  font-size: clamp(0.92rem, 1.45vw, 1.08rem);
  font-weight: 780;
}

.terms-assigned {
  grid-area: details;
  display: grid;
  align-content: center;
  gap: 12px;
  min-width: 0;
  padding: clamp(13px, 1.8vw, 22px);
  border: 1px solid rgb(109 77 204 / 24%);
  border-radius: 22px;
  background: #fbfaff;
  text-align: center;
}

.terms-x-label {
  margin: 0;
  color: var(--terms-violet-deep);
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  font-weight: 930;
}

.terms-equations p {
  margin: 5px 0;
  font-size: clamp(1.05rem, 2.2vw, 1.65rem);
  font-weight: 850;
  font-variant-numeric: tabular-nums;
}

#terms-expanded {
  color: var(--terms-muted);
  font-size: clamp(0.92rem, 1.7vw, 1.2rem);
}

.terms-value-label {
  margin: 0;
  color: var(--terms-muted);
  font-weight: 800;
}

.terms-value-label strong {
  display: inline-grid;
  place-items: center;
  min-width: 2.25em;
  margin-left: 5px;
  padding: 6px 10px;
  border-radius: 12px;
  color: white;
  background: var(--terms-violet-deep);
  font-size: 1.25em;
}

.terms-comparison {
  grid-area: comparison;
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: clamp(13px, 1.8vw, 21px);
  border: 1px solid rgb(109 77 204 / 25%);
  border-radius: 22px;
  background: #fbfaff;
}

.terms-comparison-row {
  display: grid;
  grid-template-columns: minmax(62px, auto) auto minmax(110px, 1fr) minmax(44px, auto);
  gap: clamp(7px, 1.3vw, 15px);
  align-items: center;
  min-width: 0;
  padding: 8px 12px;
  border-radius: 14px;
  background: white;
  font-size: clamp(0.95rem, 1.8vw, 1.3rem);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.comparison-expression {
  padding: 5px 10px;
  border: 2px solid rgb(109 77 204 / 38%);
  border-radius: 10px;
  color: var(--terms-violet-deep);
  background: var(--terms-violet-soft);
  font-weight: 950;
  text-align: center;
}

.terms-exploration {
  grid-area: exploration;
  min-width: 0;
  padding: clamp(13px, 1.8vw, 21px);
  border: 1px solid #dbe4ef;
  border-radius: 22px;
  background: #f8fafc;
}

.terms-slider-heading {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 10px;
  font-weight: 850;
}

#terms-slider-output {
  color: var(--terms-violet-deep);
  font-size: 1.18em;
  font-weight: 950;
}

.terms-x-slider {
  width: 100%;
  max-width: 100%;
  min-height: 42px;
  margin: 0;
  accent-color: var(--terms-violet-deep);
  cursor: pointer;
  touch-action: pan-y;
}

.terms-x-slider:focus-visible,
.terms-primary-button:focus-visible,
.terms-reset-button:focus-visible {
  outline: 5px solid rgb(109 77 204 / 27%);
  outline-offset: 3px;
}

.terms-range-labels {
  display: flex;
  justify-content: space-between;
  padding-inline: 7px;
  color: var(--terms-muted);
  font-size: 0.8rem;
  font-weight: 750;
}

.terms-conclusion {
  grid-area: conclusion;
  max-width: 100%;
  margin: 0;
  padding: clamp(15px, 2vw, 24px);
  border: 2px solid rgb(109 77 204 / 35%);
  border-radius: 20px;
  color: var(--terms-violet-deep);
  background: linear-gradient(135deg, #f4f0ff, #fff);
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  font-weight: 950;
  line-height: 1.25;
  text-align: center;
}

.terms-insight {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px 24px;
  align-items: center;
  margin-top: 14px;
  padding: clamp(16px, 2vw, 24px);
}

.terms-insight-text {
  margin: 0;
  font-size: clamp(1.05rem, 2vw, 1.45rem);
  font-weight: 840;
  line-height: 1.35;
}

.terms-controls {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.terms-primary-button,
.terms-reset-button {
  min-height: 56px;
  padding: 0 20px;
  border-radius: 16px;
  font: inherit;
  font-size: clamp(0.95rem, 1.5vw, 1.08rem);
  font-weight: 850;
  touch-action: manipulation;
}

.terms-primary-button {
  border: 2px solid var(--terms-violet-deep);
  color: white;
  background: var(--terms-violet-deep);
  box-shadow: 0 10px 24px rgb(85 53 166 / 20%);
}

.terms-reset-button {
  border: 2px solid #cbd5e1;
  color: var(--terms-ink);
  background: white;
}

.terms-primary-button:disabled {
  cursor: wait;
  opacity: 0.58;
}

.terms-board[data-state="changing"] .terms-block-current,
.terms-board[data-state="changing"] .terms-value-label strong {
  animation: terms-value-change 700ms ease-in-out 2;
}

@keyframes terms-value-change {
  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.07);
  }
}

.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;
}

noscript {
  display: block;
  margin-top: 14px;
  color: #a6384d;
  font-weight: 700;
}

@media (max-width: 760px) {
  .terms-shell {
    padding-inline: 12px;
  }

  .terms-header {
    display: block;
  }

  .terms-local-note {
    display: inline-block;
    margin-top: 12px;
  }

  .terms-board {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "formula"
      "structure"
      "details"
      "comparison"
      "exploration"
      "conclusion";
    min-height: 0;
  }

  .terms-insight {
    grid-template-columns: minmax(0, 1fr);
  }

  .terms-controls {
    justify-content: stretch;
  }

  .terms-primary-button,
  .terms-reset-button {
    flex: 1 1 0;
  }
}

@media (max-width: 520px) {
  .terms-header h1 {
    font-size: clamp(1.5rem, 8vw, 2.1rem);
  }

  .terms-expression {
    font-size: clamp(2.8rem, 17vw, 4.2rem);
  }

  .terms-structure-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .terms-plus {
    line-height: 0.7;
    text-align: center;
  }

  .terms-unit-group {
    width: min(100%, 220px);
    margin-inline: auto;
  }

  .terms-comparison-row {
    grid-template-columns: minmax(56px, auto) auto minmax(90px, 1fr) minmax(38px, auto);
    gap: 5px;
    padding-inline: 6px;
    font-size: 0.88rem;
  }

  .terms-controls {
    flex-direction: column;
  }

  .terms-primary-button,
  .terms-reset-button {
    width: 100%;
  }
}

@media (orientation: landscape) and (max-height: 820px) {
  .terms-shell {
    padding-block: 9px;
  }

  .terms-header {
    margin-bottom: 9px;
  }

  .terms-header h1 {
    font-size: clamp(1.45rem, 3vw, 2.45rem);
  }

  .terms-subtitle {
    margin-top: 3px;
  }

  .terms-board {
    gap: 10px;
    min-height: 0;
    padding: 13px;
  }

  .terms-formula-card,
  .terms-structure,
  .terms-assigned,
  .terms-comparison,
  .terms-exploration {
    padding-block: 10px;
  }

  .terms-expression {
    font-size: clamp(2.7rem, 7vw, 4.4rem);
  }

  .terms-insight {
    margin-top: 9px;
    padding-block: 11px;
  }
}

@media (min-width: 1500px) {
  .terms-shell {
    width: min(94vw, 1680px);
  }

  .terms-board {
    min-height: 610px;
  }
}

@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;
  }
}