@import url("base.css");

.policy-equation {
  display: grid; gap: 8px; padding: 16px 18px; margin: 12px 0;
  border: 1px solid rgba(122, 141, 113, .28); border-radius: 14px;
  background: linear-gradient(135deg, rgba(230, 242, 222, .55), rgba(255, 252, 244, .7));
}
.policy-equation > strong { font: 500 19px/1.5 Georgia, serif; overflow-wrap: anywhere; }
.policy-equation .eyebrow { margin: 0; }
.policy-equation p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.6; }
.hero-evidence-link { display: inline-flex; align-items: center; gap: 14px; margin-top: 14px; color: #365e48; font-size: 13px; font-weight: 650; text-decoration: none; border-bottom: 1px solid #a7bda8; padding-bottom: 5px; transition: color 500ms, text-shadow 500ms; }
.hero-evidence-link:hover { color: #167a50; text-shadow: 0 0 16px #bddcca; }
#drawAgainButton {
  position: relative; isolation: isolate; overflow: visible;
  border-color: #80b99a; color: #fffcee;
  background: linear-gradient(145deg, #367258, #174534 75%);
  box-shadow: inset 0 1px 0 #b5dcc0, inset 0 -2px 3px #112f26, 0 5px 15px #264d4433, 0 0 19px #4dbd833d;
  text-shadow: 0 0 12px #d4ffe780;
  transition: box-shadow 500ms ease, border-color 500ms ease, transform 250ms ease;
}
#drawAgainButton::before {
  content: ""; position: absolute; inset: -4px; z-index: -1; border: 1px solid #77b88b7a;
  border-radius: inherit; box-shadow: 0 0 17px #64c78c70; opacity: .25;
  animation: drawing-beacon 3.8s ease-in-out infinite; pointer-events: none;
}
#drawAgainButton:hover, #drawAgainButton:focus-visible { border-color: #c4edb7; box-shadow: inset 0 1px 0 #deffd3, inset 0 -2px 3px #112f26, 0 6px 20px #264d443d, 0 0 28px #4dbd8380; }
@keyframes drawing-beacon { 50% { opacity: .85; } }
@media (prefers-reduced-motion: reduce) { #drawAgainButton::before { animation: none; opacity: .55; } #drawAgainButton, .hero-evidence-link { transition: none; } }
.research-references { font-size: 13px; line-height: 1.8; color: var(--ink-soft); }
.research-references a { color: var(--ink); text-underline-offset: 4px; }

/* A quiet chapter rail and surface highlights. Geometry stays fixed on hover. */
body { padding-left: 108px; }
[data-nav-target] { scroll-margin-top: 28px; }
[data-nav-target]:focus { outline: none; }
[data-nav-target]:focus-visible { outline: 2px solid var(--orange-text, #b64022); outline-offset: 8px; }

.lab-nav {
  position: fixed;
  z-index: 30;
  top: 50%;
  left: 15px;
  width: 88px;
  padding: 14px 6px 7px;
  transform: translateY(-50%);
  border: 1px solid rgba(94, 101, 79, .22);
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(255, 255, 252, .94), rgba(238, 233, 219, .95));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9), 0 12px 34px rgba(21, 37, 32, .09);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.lab-nav-caption {
  display: block;
  margin: 0 0 9px;
  color: var(--ink-soft);
  font: 600 8px/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: .1em;
}
.lab-nav a {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 66px;
  margin: 3px 0;
  padding: 9px 3px;
  border: 1px solid transparent;
  border-radius: 15px;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 10px;
  font-weight: 650;
  white-space: nowrap;
  transition: color 180ms ease, background-color 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}
.lab-nav svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.35;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.lab-nav a[aria-current="location"] {
  color: #98391f;
  border-color: rgba(193, 113, 75, .32);
  background: rgba(255, 248, 231, .85);
  box-shadow: inset 0 1px 0 #fffdf5, 0 3px 12px rgba(142, 88, 52, .1);
}
.lab-nav a::after {
  content: "";
  position: absolute;
  right: -4px;
  top: 28px;
  width: 4px;
  height: 10px;
  border-radius: 5px;
  background: var(--orange);
  box-shadow: 0 0 8px rgba(240, 100, 60, .35);
  opacity: 0;
  transition: opacity 200ms ease;
}
.lab-nav a[aria-current="location"]::after { opacity: 1; }
.lab-nav a:focus-visible { outline: 2px solid #b64022; outline-offset: 2px; }

:is(.lab-grid, .plot-card, .caliper-lab, .turning-lab, .flow-lab, .curvature-note, .geometry-first) {
  transition: border-color 500ms ease, box-shadow 500ms ease;
}
:is(.lab-grid, .plot-card, .caliper-lab, .turning-lab, .flow-lab, .curvature-note, .geometry-first):focus-within {
  border-color: rgba(136, 108, 66, .6);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .85), 0 18px 42px rgba(21, 37, 32, .12), 0 0 0 1px rgba(183, 145, 92, .12);
}
@media (hover: hover) and (pointer: fine) {
  .lab-nav a:hover { color: #98391f; border-color: rgba(193, 113, 75, .24); background-color: rgba(255, 253, 247, .7); }
  :is(.lab-grid, .plot-card, .caliper-lab, .turning-lab, .flow-lab, .curvature-note, .geometry-first):hover {
    border-color: rgba(136, 108, 66, .48);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .85), 0 18px 42px rgba(21, 37, 32, .11), 0 0 0 1px rgba(183, 145, 92, .1);
  }
}
@media (max-width: 1199px) {
  body { padding-left: 0; padding-top: 68px; }
  [data-nav-target] { scroll-margin-top: 88px; }
  .lab-nav {
    top: 8px;
    left: 12px;
    right: 12px;
    width: auto;
    max-width: 650px;
    margin: 0 auto;
    display: flex;
    padding: 4px;
    transform: none;
    border-radius: 16px;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scrollbar-width: thin;
    scrollbar-color: #c3b49a transparent;
  }
  .lab-nav-caption { display: none; }
  .lab-nav a { flex: 1 0 73px; gap: 4px; min-height: 46px; margin: 0; padding: 5px 8px; border-radius: 11px; font-size: 9px; }
  .lab-nav svg { width: 18px; height: 18px; }
  .lab-nav a::after { top: auto; bottom: 0; right: calc(50% - 6px); width: 12px; height: 2px; }
}

@media (min-width: 1200px) {
  .lab-nav { max-height: calc(100dvh - 32px); overflow-y: auto; scrollbar-width: thin; scrollbar-color: #c3b49a transparent; }
}
@media (prefers-reduced-motion: reduce) {
  .lab-nav a, .lab-nav a::after,
  :is(.lab-grid, .plot-card, .caliper-lab, .turning-lab, .flow-lab, .curvature-note, .geometry-first) { transition: none; }
}

/* Dynamic SVG layers rendered by app.js. */
.stage-raw,
.stage-raw-live,
.stage-analysis,
.stage-fit-circle,
.stage-zone-band,
.stage-zone-bound,
.stage-area-circle,
.stage-perimeter-circle,
.stage-harmonic,
.stage-center,
.stage-closure,
.stage-curvature-good,
.stage-curvature-low,
.stage-curvature-high,
.stage-curvature-negative {
  fill: none;
  vector-effect: non-scaling-stroke;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.stage-raw { stroke: #83958e; stroke-width: 1.2; stroke-dasharray: 2 5; opacity: 0.58; }
.stage-raw-live { stroke: #f7f5ec; stroke-width: 4; }
.stage-analysis { stroke: var(--orange); stroke-width: 3.2; }
.stage-fit-circle { stroke: var(--mint); stroke-width: 1.7; stroke-dasharray: 7 6; }
.stage-fit-faint { opacity: 0.48; }

.stage-spoke-positive,
.stage-spoke-negative {
  vector-effect: non-scaling-stroke;
  stroke-width: 1.35;
  opacity: 0.8;
}

.stage-spoke-positive { stroke: var(--red); }
.stage-spoke-negative { stroke: var(--blue); }
.stage-zone-band { stroke: var(--mint); opacity: 0.18; }
.stage-zone-bound { stroke: var(--mint); stroke-width: 1.6; stroke-dasharray: 5 5; }
.stage-area-circle { stroke: var(--mint); stroke-width: 1.7; stroke-dasharray: 8 5; }
.stage-perimeter-circle { stroke: var(--yellow); stroke-width: 1.5; stroke-dasharray: 2 5; }
.stage-shape-fill { fill: rgba(240, 100, 60, 0.16); stroke: none; }
.stage-harmonic { stroke: var(--yellow); stroke-width: 2.2; stroke-dasharray: 7 5; }
.stage-center { stroke: #f7f5ec; stroke-width: 1.2; opacity: 0.72; }

.stage-label {
  fill: #f7f5ec;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.stage-start,
.stage-end {
  vector-effect: non-scaling-stroke;
  stroke: var(--stage);
  stroke-width: 1.5;
}

.stage-start { fill: var(--mint); }
.stage-end { fill: var(--orange); }
.stage-closure { stroke: var(--red); stroke-width: 1.5; stroke-dasharray: 4 5; }

.stage-curvature-good,
.stage-curvature-low,
.stage-curvature-high,
.stage-curvature-negative { stroke-width: 3.5; }
.stage-curvature-good { stroke: var(--mint); }
.stage-curvature-low { stroke: var(--blue); }
.stage-curvature-high { stroke: var(--yellow); }
.stage-curvature-negative { stroke: var(--red); }

.mini-path-raw,
.mini-path-sample,
.mini-path-before,
.mini-path-smooth {
  fill: none;
  stroke-linejoin: round;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
}

.mini-path-raw { stroke: var(--ink-soft); stroke-width: 1.1; opacity: 0.62; }
.mini-dot-raw { fill: var(--orange); opacity: 0.65; }
.mini-path-sample { stroke: var(--ink-soft); stroke-width: 1; opacity: 0.32; }
.mini-dot-sample { fill: var(--blue); }
.mini-path-before { stroke: var(--ink-soft); stroke-width: 1; stroke-dasharray: 2 4; opacity: 0.4; }
.mini-path-smooth { stroke: var(--orange); stroke-width: 2.3; }

.chart-peak,
.chart-valley,
.chart-negative {
  vector-effect: non-scaling-stroke;
  stroke: var(--panel);
  stroke-width: 1.5;
}

.chart-peak { fill: var(--red); }
.chart-valley { fill: var(--blue); }
.chart-negative { fill: var(--red); }
.chart-line-raw { stroke-dasharray: 2 4; opacity: 0.35; }
.chart-ideal-label,
.chart-dominant-label { fill: var(--orange); }
.chart-mode-label { font-size: 8px; }

.chart-empty-box {
  fill: rgba(232, 226, 212, 0.32);
  stroke: var(--line);
  stroke-dasharray: 4 6;
}



/* Comprehensive score mode. */
[hidden] { display: none !important; }

.mode-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  margin-bottom: 18px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(232, 226, 212, 0.44);
}

.mode-button {
  min-height: 40px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.76rem;
  font-weight: 800;
  cursor: pointer;
}

.mode-button:hover { color: var(--ink); }
.mode-button.is-active {
  background: var(--ink);
  color: var(--panel);
  box-shadow: 0 2px 10px rgba(21, 37, 32, 0.12);
}

.mode-button:focus-visible {
  outline: 3px solid rgba(240, 100, 60, 0.35);
  outline-offset: 2px;
}

.comprehensive-panel {
  margin-top: 24px;
  padding: 24px;
  border-radius: 16px;
  background: var(--paper-deep);
}

.score-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.score-heading h3 {
  max-width: 330px;
  margin: 0;
  font-size: clamp(1.45rem, 2vw, 2rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.score-label {
  margin: 9px 0 0;
  color: var(--orange);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.score-dial {
  --score: 0;
  position: relative;
  display: grid;
  flex: 0 0 108px;
  width: 108px;
  aspect-ratio: 1;
  place-content: center;
  overflow: hidden;
  border-radius: 50%;
  background: conic-gradient(var(--orange) calc(var(--score) * 1%), rgba(21, 37, 32, 0.12) 0);
  text-align: center;
}

.score-dial::before {
  position: absolute;
  inset: 7px;
  border-radius: inherit;
  background: var(--paper-deep);
  content: "";
}

.score-dial strong,
.score-dial span {
  position: relative;
  z-index: 1;
}

.score-dial strong {
  color: var(--orange);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 2.15rem;
  line-height: 0.95;
}

.score-dial span {
  margin-top: 3px;
  color: var(--ink-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.62rem;
}

.score-dial.is-invalid {
  background: conic-gradient(var(--line) 100%, var(--line) 0);
}

.confidence-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3px 18px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid rgba(21, 37, 32, 0.16);
  border-bottom: 1px solid rgba(21, 37, 32, 0.16);
}

.confidence-row > span {
  font-size: 0.76rem;
  font-weight: 800;
}

.confidence-row > strong {
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.74rem;
  text-transform: uppercase;
}

.confidence-row small {
  grid-column: 1 / -1;
  color: var(--ink-soft);
  font-size: 0.68rem;
  line-height: 1.4;
}

.score-status {
  margin: 13px 0;
  color: var(--ink-soft);
  font-size: 0.7rem;
  line-height: 1.45;
}

.score-status.is-warning {
  padding: 10px 12px;
  border-left: 3px solid var(--red);
  background: rgba(195, 61, 52, 0.08);
  color: var(--ink);
}

.score-components {
  display: grid;
  gap: 1px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.score-component {
  display: grid;
  grid-template-columns: 25px minmax(0, 1fr) 74px;
  gap: 11px;
  align-items: center;
  padding: 11px 0;
}

.score-component + .score-component {
  border-top: 1px solid rgba(21, 37, 32, 0.1);
}

.component-code {
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--orange);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.62rem;
  font-weight: 800;
}

.component-main { min-width: 0; }

.component-title {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: baseline;
}

.component-title strong {
  font-size: 0.72rem;
}

.component-title span {
  overflow: hidden;
  color: var(--ink-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.6rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.component-track {
  height: 4px;
  margin-top: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(21, 37, 32, 0.11);
}

.component-track i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--mint));
}

.component-quality {
  text-align: right;
}

.component-quality strong,
.component-quality span {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.component-quality strong {
  font-size: 0.7rem;
}

.component-quality span {
  margin-top: 3px;
  color: var(--ink-soft);
  font-size: 0.57rem;
}

.score-limiting,
.score-scale-note {
  color: var(--ink-soft);
  font-size: 0.68rem;
  line-height: 1.5;
}

.score-limiting { margin: 15px 0 0; }
.score-scale-note {
  margin: 10px 0 0;
  padding-left: 11px;
  border-left: 2px solid var(--yellow);
}

.comprehensive-panel .calculation-body p {
  margin: 0;
}

.comprehensive-panel .calculation-body p + p {
  margin-top: 8px;
}

.stage-zone-faint { opacity: 0.48; }

.geometry-first {
  display: grid;
  grid-template-columns: minmax(220px, 0.8fr) minmax(0, 1.4fr);
  gap: 10px clamp(34px, 7vw, 110px);
  margin-top: clamp(82px, 10vw, 150px);
  padding: clamp(28px, 5vw, 64px);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(251, 250, 244, 0.62);
}

.geometry-first > .eyebrow,
.geometry-first h2 {
  grid-column: 1;
}

.geometry-first h2 {
  max-width: 530px;
  margin: 0;
  font-size: clamp(2rem, 4vw, 4.1rem);
}

.geometry-first-copy {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: end;
  color: var(--ink-soft);
  line-height: 1.65;
}

.geometry-first-copy p:first-child { margin-top: 0; }
.geometry-first-copy p:last-child { margin-bottom: 0; }

.geometry-thesis {
  grid-column: 1 / -1;
  margin: 28px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--orange);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(0.76rem, 1.2vw, 0.95rem);
  font-weight: 800;
}

@media (max-width: 760px) {
  .geometry-first {
    grid-template-columns: 1fr;
  }

  .geometry-first > .eyebrow,
  .geometry-first h2,
  .geometry-first-copy,
  .geometry-thesis {
    grid-column: 1;
    grid-row: auto;
  }
}

@media (max-width: 520px) {
  .mode-switch {
    grid-template-columns: 1fr;
  }

  .comprehensive-panel {
    padding: 19px;
  }

  .score-heading {
    align-items: flex-start;
  }

  .score-dial {
    flex-basis: 88px;
    width: 88px;
  }

  .score-dial strong {
    font-size: 1.75rem;
  }

  .score-component {
    grid-template-columns: 23px minmax(0, 1fr) 62px;
    gap: 8px;
  }

  .component-title {
    display: block;
  }

  .component-title span {
    display: block;
    margin-top: 3px;
  }

  .geometry-first {
    border-radius: 0;
    border-left: 0;
    border-right: 0;
  }
}

/* Theorem-backed constant-width showpiece. */
.caliper-section {
  margin-top: clamp(82px, 10vw, 150px);
}

.theorem-tag {
  display: inline-flex;
  margin-left: 8px;
  padding: 3px 7px;
  border: 1px solid rgba(21, 37, 32, 0.26);
  border-radius: 999px;
  color: var(--ink);
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  vertical-align: middle;
}

.caliper-lab {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.caliper-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px;
  padding: 22px 26px;
  border-bottom: 1px solid var(--line);
  background: var(--paper-deep);
}

.caliper-controls label {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 7px 14px;
  align-items: baseline;
  color: var(--ink);
  font-size: 0.74rem;
  font-weight: 800;
}

.caliper-controls output {
  color: var(--orange-text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.68rem;
}

.caliper-controls input {
  grid-column: 1 / -1;
  width: 100%;
  margin: 0;
}

.caliper-controls small {
  grid-column: 1 / -1;
  color: var(--ink-soft);
  font-size: 0.62rem;
  font-weight: 500;
  line-height: 1.4;
}

.caliper-main-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(260px, 0.75fr);
  gap: 0;
}

.caliper-visual {
  min-width: 0;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.caliper-visual svg,
.caliper-width-panel svg {
  display: block;
  width: 100%;
  overflow: visible;
}

.caliper-field {
  fill: var(--stage);
  stroke: var(--stage-grid);
}

.caliper-rail {
  stroke: var(--mint);
  stroke-width: 5;
  vector-effect: non-scaling-stroke;
}

.caliper-shape {
  fill: rgba(240, 100, 60, 0.2);
  stroke: var(--orange);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.caliper-contact-chord {
  stroke: var(--yellow);
  stroke-width: 1.6;
  stroke-dasharray: 6 5;
  vector-effect: non-scaling-stroke;
}

.caliper-contact {
  fill: var(--yellow);
  stroke: var(--stage);
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.caliper-chord-label,
.caliper-key text {
  fill: #f7f5ec;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.caliper-center-link {
  stroke: rgba(247, 245, 236, 0.52);
  stroke-width: 1.2;
  stroke-dasharray: 3 4;
  vector-effect: non-scaling-stroke;
}

.caliper-support-origin {
  fill: none;
  stroke: var(--blue);
  stroke-width: 1.8;
  vector-effect: non-scaling-stroke;
}

.caliper-contact-midpoint {
  fill: var(--yellow);
  stroke: var(--stage);
  stroke-width: 1.4;
  vector-effect: non-scaling-stroke;
}

.caliper-readout {
  padding: 30px 26px;
  background: rgba(232, 226, 212, 0.34);
}

.caliper-readout .eyebrow {
  margin-bottom: 8px;
}

.caliper-formula {
  margin: 0;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(0.9rem, 1.3vw, 1.12rem);
  font-weight: 800;
}

.caliper-intro {
  margin: 13px 0 22px;
  color: var(--ink-soft);
  font-size: 0.72rem;
  line-height: 1.55;
}

.caliper-metrics {
  display: grid;
  gap: 0;
  margin: 0;
}

.caliper-metrics div {
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.caliper-metrics dt {
  color: var(--ink-soft);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.caliper-metrics dd {
  margin: 5px 0 2px;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(1.15rem, 2vw, 1.7rem);
  font-weight: 800;
}

.caliper-metrics small {
  color: var(--ink-soft);
  font-size: 0.59rem;
}

.caliper-narration {
  min-height: 4.4em;
  margin: 17px 0 0;
  padding-left: 12px;
  border-left: 3px solid var(--orange);
  color: var(--ink);
  font-size: 0.7rem;
  font-weight: 750;
  line-height: 1.5;
}

.caliper-width-panel,
.support-spectrum-panel {
  padding: 24px 28px 18px;
  border-top: 1px solid var(--line);
}

.support-spectrum-panel svg {
  display: block;
  width: 100%;
  overflow: visible;
}

.research-svg-scroll {
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-inline: contain;
}

.research-svg-scroll > svg {
  min-width: 620px;
}

.support-spectrum-axis,
.support-spectrum-tick {
  stroke: var(--line);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.support-spectrum-bar {
  fill: var(--orange);
}

.support-spectrum-bar.is-width {
  fill: var(--mint);
}

.support-spectrum-zero {
  fill: var(--paper-deep);
  stroke: var(--line);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.support-spectrum-cancel {
  stroke: var(--yellow);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}

.support-spectrum-label {
  fill: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.caliper-width-line {
  fill: none;
  stroke: var(--blue);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.caliper-width-guide {
  stroke: var(--yellow);
  stroke-width: 1.5;
  stroke-dasharray: 4 4;
  vector-effect: non-scaling-stroke;
}

.caliper-width-marker {
  fill: var(--yellow);
  stroke: var(--ink);
  stroke-width: 1.2;
  vector-effect: non-scaling-stroke;
}

.caliper-axis-title {
  fill: var(--ink);
  font-weight: 800;
}

.caliper-boundary {
  display: grid;
  grid-template-columns: minmax(220px, 0.38fr) minmax(0, 1fr);
  gap: 24px;
  margin: 0 26px 26px;
  padding: 21px;
  border: 1px dashed rgba(21, 37, 32, 0.34);
  border-radius: 16px;
  background: rgba(133, 224, 195, 0.09);
}

.caliper-boundary h3 {
  margin: 0 0 7px;
  font-size: 1rem;
}

.caliper-boundary p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.72rem;
  line-height: 1.55;
}

@media (max-width: 940px) {
  .caliper-main-grid {
    grid-template-columns: 1fr;
  }

  .caliper-visual {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .caliper-readout {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 0 30px;
  }

  .caliper-metrics,
  .caliper-narration {
    grid-column: 2;
  }

  .caliper-metrics {
    grid-row: 1 / span 3;
  }
}

@media (max-width: 720px) {
  .caliper-controls,
  .caliper-readout,
  .caliper-boundary {
    grid-template-columns: 1fr;
  }

  .caliper-readout {
    display: block;
  }

  .caliper-boundary {
    margin: 0 18px 18px;
  }
}

@media (max-width: 520px) {
  .caliper-section {
    padding-right: 16px;
    padding-left: 16px;
  }

  .caliper-controls,
  .caliper-visual,
  .caliper-readout,
  .caliper-width-panel,
  .support-spectrum-panel {
    padding: 18px;
  }

  .caliper-key,
  .caliper-chord-label {
    display: none;
  }
}

/* Theorem-backed tangent-turning showpiece. */
.turning-section {
  margin-top: clamp(82px, 10vw, 150px);
}

.turning-lab {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.turning-control {
  padding: 22px 26px;
  border-bottom: 1px solid var(--line);
  background: var(--paper-deep);
}

.turning-control label {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 7px 14px;
  align-items: baseline;
  color: var(--ink);
  font-size: 0.74rem;
  font-weight: 800;
}

.turning-control output {
  color: var(--orange-text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.68rem;
}

.turning-control input,
.turning-control small {
  grid-column: 1 / -1;
  width: 100%;
}

.turning-microscope-toggle {
  display: flex !important;
  grid-template-columns: none !important;
  gap: 9px !important;
  align-items: center !important;
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px solid var(--line);
  font-size: 0.66rem !important;
}

.turning-microscope-toggle input {
  grid-column: auto;
  width: auto;
  margin: 0;
}

.turning-microscope-toggle small {
  grid-column: auto;
  width: auto;
  margin-left: auto;
  text-align: right;
}

.turning-control input { margin: 0; }

.turning-control small {
  color: var(--ink-soft);
  font-size: 0.62rem;
  font-weight: 500;
  line-height: 1.4;
}

.turning-main-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(270px, 0.8fr);
}

.turning-visual {
  min-width: 0;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.turning-visual svg,
.turning-plot-panel svg {
  display: block;
  width: 100%;
  overflow: visible;
}

.turning-field {
  fill: var(--stage);
  stroke: var(--stage-grid);
}

.turning-contour-base,
.turning-contour-walked,
.turning-tangent,
.turning-tangent-head,
.turning-compass-arrow {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.turning-contour-base {
  stroke: rgba(247, 245, 236, 0.32);
  stroke-width: 2.2;
}

.turning-contour-walked {
  stroke: var(--orange);
  stroke-width: 4;
}

.turning-position-dot {
  fill: var(--yellow);
  stroke: var(--stage);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}

.turning-osculating-circle,
.turning-radius-line,
.turning-evolute {
  fill: none;
  vector-effect: non-scaling-stroke;
}

.turning-osculating-circle {
  stroke: var(--blue);
  stroke-width: 1.8;
  stroke-dasharray: 7 5;
}

.turning-radius-line {
  stroke: var(--blue);
  stroke-width: 1.3;
  stroke-dasharray: 3 4;
}

.turning-radius-offstage { stroke: var(--yellow); }

.turning-evolute {
  stroke: var(--yellow);
  stroke-width: 1.5;
  opacity: 0.72;
}

.turning-osculating-center {
  fill: var(--blue);
  stroke: var(--stage);
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.turning-tangent,
.turning-tangent-head,
.turning-compass-arrow {
  stroke: var(--mint);
  stroke-width: 2.4;
}

.turning-compass-ring {
  fill: rgba(133, 224, 195, 0.06);
  stroke: rgba(247, 245, 236, 0.46);
  stroke-width: 1.4;
  stroke-dasharray: 4 4;
  vector-effect: non-scaling-stroke;
}

.turning-compass-sweep {
  fill: none;
  stroke: var(--orange);
  stroke-width: 4;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
}

.turning-compass-dot {
  fill: var(--yellow);
  stroke: var(--stage);
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.turning-direction-label {
  fill: #f7f5ec;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.turning-blank-label {
  fill: #f7f5ec;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 16px;
}

.turning-readout {
  padding: 30px 26px;
  background: rgba(232, 226, 212, 0.34);
}

.turning-readout .eyebrow { margin-bottom: 8px; }

.turning-formula {
  margin: 0;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  font-weight: 800;
}

.turning-intro {
  margin: 13px 0 22px;
  color: var(--ink-soft);
  font-size: 0.72rem;
  line-height: 1.55;
}

.turning-metrics {
  display: grid;
  gap: 0;
  margin: 0;
}

.turning-metrics div {
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.turning-metrics dt {
  color: var(--ink-soft);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.turning-metrics dd {
  margin: 5px 0 2px;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(1.15rem, 2vw, 1.7rem);
  font-weight: 800;
}

.turning-metrics small {
  color: var(--ink-soft);
  font-size: 0.59rem;
}

.turning-narration {
  min-height: 4.4em;
  margin: 17px 0 0;
  padding-left: 12px;
  border-left: 3px solid var(--mint);
  color: var(--ink);
  font-size: 0.7rem;
  font-weight: 750;
  line-height: 1.5;
}

.turning-plot-panel {
  padding: 24px 28px 18px;
  border-top: 1px solid var(--line);
}

.turning-plot-measured,
.turning-plot-ideal,
.turning-plot-guide,
.turning-residual-stick {
  fill: none;
  vector-effect: non-scaling-stroke;
}

.turning-plot-measured {
  stroke: var(--orange);
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.turning-plot-ideal {
  stroke: var(--mint);
  stroke-width: 1.7;
  stroke-dasharray: 7 5;
}

.turning-plot-guide {
  stroke: var(--yellow);
  stroke-width: 1.5;
  stroke-dasharray: 4 4;
}

.turning-residual-stick {
  stroke: var(--yellow);
  stroke-width: 2;
}

.turning-plot-marker {
  fill: var(--yellow);
  stroke: var(--ink);
  stroke-width: 1.2;
  vector-effect: non-scaling-stroke;
}

.turning-boundary {
  display: grid;
  grid-template-columns: minmax(220px, 0.38fr) minmax(0, 1fr);
  gap: 24px;
  margin: 0 26px 26px;
  padding: 21px;
  border: 1px dashed rgba(21, 37, 32, 0.34);
  border-radius: 16px;
  background: rgba(133, 224, 195, 0.09);
}

.turning-boundary h3 {
  margin: 0 0 7px;
  font-size: 1rem;
}

.turning-boundary p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.72rem;
  line-height: 1.55;
}

@media (max-width: 940px) {
  .turning-main-grid { grid-template-columns: 1fr; }
  .turning-visual {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 720px) {
  .turning-boundary { grid-template-columns: 1fr; }
  .turning-boundary { margin: 0 18px 18px; }
  .turning-microscope-toggle {
    align-items: flex-start !important;
    flex-wrap: wrap;
  }
  .turning-microscope-toggle small {
    flex-basis: 100%;
    margin-left: 25px;
    text-align: left;
  }
}

@media (max-width: 520px) {
  .turning-section {
    padding-right: 16px;
    padding-left: 16px;
  }
  .turning-control,
  .turning-visual,
  .turning-readout,
  .turning-plot-panel { padding: 18px; }
  .turning-direction-label,
  .turning-compass { display: none; }

  .turning-blank-label { font-size: 30px; }

  .turning-visual svg {
    max-height: 330px;
  }

  .turning-plot-panel svg {
    min-height: 245px;
  }

  .turning-plot-panel .chart-label,
  .support-spectrum-panel .support-spectrum-label {
    font-size: 18px;
  }

  .support-spectrum-panel svg {
    min-height: 190px;
  }

  .support-spectrum-panel .plot-heading,
  .turning-plot-panel .plot-heading {
    display: grid;
    gap: 4px;
  }

  .support-spectrum-panel .plot-heading output,
  .turning-plot-panel .plot-heading output {
    justify-self: start;
  }
}

/* Curve-shortening telescope: a compact sequel to the tangent walk. */
.flow-lab {
  overflow: hidden;
  margin-top: 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.flow-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 28px;
  align-items: end;
  padding: 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(133, 224, 195, 0.08);
}

.flow-heading .eyebrow { margin-bottom: 8px; }

.flow-heading h3 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.65rem, 3.3vw, 2.8rem);
  line-height: 1;
}

.flow-heading > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.75rem;
  line-height: 1.55;
}

.flow-control {
  padding: 20px 28px;
  border-bottom: 1px solid var(--line);
  background: var(--paper-deep);
}

.flow-control label {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 7px 14px;
  align-items: baseline;
  color: var(--ink);
  font-size: 0.74rem;
  font-weight: 800;
}

.flow-control output {
  color: var(--orange-text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.68rem;
}

.flow-control input,
.flow-control small {
  grid-column: 1 / -1;
  width: 100%;
}

.flow-control input { margin: 0; }

.flow-control small {
  color: var(--ink-soft);
  font-size: 0.62rem;
  font-weight: 500;
}

.flow-main-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(285px, 0.75fr);
}

.flow-visual {
  min-width: 0;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.flow-visual svg,
.flow-plot-panel svg {
  display: block;
  width: 100%;
  overflow: visible;
}

.flow-field {
  fill: var(--stage);
  stroke: var(--stage-grid);
}

.flow-divider {
  stroke: rgba(247, 245, 236, 0.2);
  stroke-width: 1;
  stroke-dasharray: 4 5;
  vector-effect: non-scaling-stroke;
}

.flow-start-outline,
.flow-current {
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.flow-start-outline {
  fill: none;
  stroke: rgba(247, 245, 236, 0.28);
  stroke-width: 2;
  stroke-dasharray: 5 5;
}

.flow-current {
  stroke-width: 3;
}

.flow-current-physical {
  fill: rgba(240, 100, 60, 0.12);
  stroke: var(--orange);
}

.flow-current-normalized {
  fill: rgba(133, 224, 195, 0.1);
  stroke: var(--mint);
}

.flow-panel-title,
.flow-panel-note,
.flow-blank-label {
  fill: #f7f5ec;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.flow-panel-title {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.flow-panel-note { font-size: 14px; }
.flow-blank-label { font-size: 16px; }

.flow-plot-panel .chart-label { font-size: 14px; }

.flow-visual .research-svg-scroll > svg.is-stacked {
  min-width: 0;
}

.flow-visual svg.is-stacked .flow-panel-title,
.flow-visual svg.is-stacked .flow-panel-note {
  font-size: 18px;
}

.flow-visual svg.is-stacked .flow-blank-label {
  font-size: 30px;
}

.flow-readout {
  padding: 30px 26px;
  background: rgba(232, 226, 212, 0.34);
}

.flow-readout .eyebrow { margin-bottom: 8px; }

.flow-formula {
  margin: 0;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  font-weight: 800;
}

.flow-intro {
  margin: 13px 0 22px;
  color: var(--ink-soft);
  font-size: 0.72rem;
  line-height: 1.55;
}

.flow-metrics {
  display: grid;
  gap: 0;
  margin: 0;
}

.flow-metrics div {
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.flow-metrics dt {
  color: var(--ink-soft);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.flow-metrics dd {
  margin: 5px 0 2px;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(1.15rem, 2vw, 1.7rem);
  font-weight: 800;
}

.flow-metrics small {
  color: var(--ink-soft);
  font-size: 0.59rem;
}

.flow-narration {
  min-height: 4.4em;
  margin: 17px 0 0;
  padding-left: 12px;
  border-left: 3px solid var(--orange);
  color: var(--ink);
  font-size: 0.7rem;
  font-weight: 750;
  line-height: 1.5;
}

.flow-plot-panel {
  padding: 24px 28px 18px;
  border-top: 1px solid var(--line);
}

.flow-plot-measured,
.flow-plot-ideal,
.flow-plot-guide,
.flow-clock-stick {
  fill: none;
  vector-effect: non-scaling-stroke;
}

.flow-plot-measured {
  stroke: var(--orange);
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.flow-plot-ideal {
  stroke: var(--mint);
  stroke-width: 1.7;
  stroke-dasharray: 7 5;
}

.flow-plot-guide {
  stroke: var(--yellow);
  stroke-width: 1.5;
  stroke-dasharray: 4 4;
}

.flow-clock-stick {
  stroke: var(--yellow);
  stroke-width: 2;
}

.flow-plot-marker {
  fill: var(--yellow);
  stroke: var(--ink);
  stroke-width: 1.2;
  vector-effect: non-scaling-stroke;
}

.flow-boundary {
  display: grid;
  grid-template-columns: minmax(220px, 0.38fr) minmax(0, 1fr);
  gap: 24px;
  margin: 0 26px 26px;
  padding: 21px;
  border: 1px dashed rgba(240, 100, 60, 0.52);
  border-radius: 16px;
  background: rgba(242, 207, 99, 0.09);
}

.flow-boundary h3 {
  margin: 0 0 7px;
  font-size: 1rem;
}

.flow-boundary p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.72rem;
  line-height: 1.55;
}

@media (max-width: 940px) {
  .flow-heading,
  .flow-main-grid { grid-template-columns: 1fr; }

  .flow-visual {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 720px) {
  .flow-boundary { grid-template-columns: 1fr; }
  .flow-boundary { margin: 0 18px 18px; }
}

@media (max-width: 520px) {
  .flow-heading,
  .flow-control,
  .flow-visual,
  .flow-readout,
  .flow-plot-panel { padding: 18px; }

  .flow-visual svg,
  .flow-plot-panel svg { min-height: 220px; }

  .flow-plot-panel .chart-label,
  .flow-panel-title,
  .flow-panel-note { font-size: 18px; }

  .flow-plot-panel .plot-heading {
    display: grid;
    gap: 4px;
  }

  .flow-plot-panel .plot-heading output { justify-self: start; }
}



/* Small utilities and accessibility refinements. */
:root {
  --orange-text: #b64022;
  --blue-text: #3658a6;
}

button:focus-visible,
select:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline-color: var(--ink);
}

h1 em,
.curvature-note .formula,
.step-index,
.scale-label-row output,
.method-value,
.tradeoff-grid span,
.pipeline-arrow,
.plot-heading output,
.score-label,
.component-code,
.geometry-thesis {
  color: var(--orange-text);
}

.confidence-row > strong {
  color: var(--blue-text);
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 15px;
}

.button-compact {
  min-height: 34px;
  padding: 0 13px;
  font-size: 0.7rem;
}

.export-status {
  min-height: 1em;
  color: var(--ink-soft);
  font-size: 0.68rem;
}

.export-status.is-error {
  color: #9b3029;
}

.clipboard-fallback {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.plot-caption {
  margin: 8px 2px 0;
  color: var(--ink-soft);
  font-size: 0.68rem;
  line-height: 1.4;
}

.stage-close-target {
  fill: rgba(133, 224, 195, 0.08);
  stroke: var(--mint);
  stroke-width: 1.5;
  stroke-dasharray: 3 4;
  vector-effect: non-scaling-stroke;
}

.stage-close-target.is-ready {
  fill: rgba(133, 224, 195, 0.2);
  stroke-width: 2.5;
  stroke-dasharray: none;
}

.stage-close-label {
  fill: #f7f5ec;
  paint-order: stroke;
  stroke: var(--stage);
  stroke-width: 3px;
  stroke-linejoin: round;
}

@media (max-width: 520px) {
  .status-pill {
    width: auto;
    padding: 0 9px;
    font-size: 0.62rem;
  }

  .result-actions .button {
    flex: 1 1 130px;
  }

  .export-status {
    flex-basis: 100%;
  }
}

.stage-extreme line {
  vector-effect: non-scaling-stroke;
  stroke-width: 1.4;
  stroke-dasharray: 3 3;
}

.stage-extreme circle {
  vector-effect: non-scaling-stroke;
  stroke: var(--stage);
  stroke-width: 2;
}

.stage-extreme text {
  fill: #f7f5ec;
  stroke: var(--stage);
  stroke-width: 3px;
  paint-order: stroke;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.stage-extreme-bulge line { stroke: var(--red); }
.stage-extreme-bulge circle { fill: var(--red); }
.stage-extreme-dent line { stroke: var(--blue); }
.stage-extreme-dent circle { fill: var(--blue); }

.scale-stability {
  margin: 13px 0 16px;
  padding: 11px 12px 12px;
  border: 1px solid rgba(21, 37, 32, 0.14);
  border-radius: 7px;
  background: rgba(21, 37, 32, 0.035);
}

.scale-stability[hidden] { display: none; }

.scale-stability-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 9px;
}

.scale-stability-head strong {
  font-size: 0.69rem;
}

.scale-stability-head span {
  color: var(--ink-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.58rem;
}

.scale-stability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
}

.scale-stability-cell {
  display: grid;
  gap: 5px;
  min-width: 0;
  padding: 7px 8px;
  border-left: 2px solid var(--line);
  background: rgba(255, 255, 255, 0.28);
}

.scale-stability-cell.is-declared {
  border-left-color: var(--orange);
  background: rgba(240, 100, 60, 0.08);
}

.scale-stability-cell span,
.scale-stability-cell strong {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.scale-stability-cell span {
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 0.52rem;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.scale-stability-cell strong {
  font-size: 0.82rem;
}

@media (max-width: 520px) {
  .scale-stability-grid {
    grid-template-columns: 1fr;
  }

  .scale-stability-cell {
    grid-template-columns: 1fr auto;
    align-items: baseline;
  }
}

.experimental-section {
  margin-top: clamp(82px, 10vw, 150px);
}

.experimental-tag {
  display: inline-flex;
  margin-left: 8px;
  padding: 3px 7px;
  border: 1px solid rgba(240, 100, 60, 0.5);
  border-radius: 999px;
  color: var(--orange);
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  vertical-align: middle;
}

.experimental-plots {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(310px, 0.85fr);
  gap: 18px;
}

.experimental-map-card,
.experimental-energy-card {
  position: relative;
}

.experimental-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 14px;
  align-items: center;
  margin-top: 6px;
  color: var(--ink-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.58rem;
}

.experimental-legend span {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

.experimental-swatch {
  width: 18px;
  height: 8px;
  border: 1px solid rgba(21, 37, 32, 0.18);
}

.experimental-swatch.is-flat { background: var(--blue); opacity: 0.72; }
.experimental-swatch.is-near { background: var(--paper-deep); }
.experimental-swatch.is-sharp { background: var(--orange); opacity: 0.78; }

.experimental-inflection-dot {
  width: 8px;
  height: 8px;
  border: 1.5px solid var(--stage);
  border-radius: 50%;
  background: var(--yellow);
}

.experimental-frame,
.experimental-empty-box {
  fill: rgba(232, 226, 212, 0.42);
  stroke: var(--line);
  stroke-width: 1;
}

.experimental-grid-line {
  stroke: rgba(21, 37, 32, 0.13);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.experimental-cell.is-near { fill: var(--paper-deep); }
.experimental-cell.is-flat-1 { fill: var(--blue); fill-opacity: 0.32; }
.experimental-cell.is-flat-2 { fill: var(--blue); fill-opacity: 0.62; }
.experimental-cell.is-flat-3 { fill: var(--blue); fill-opacity: 0.92; }
.experimental-cell.is-sharp-1 { fill: var(--orange); fill-opacity: 0.32; }
.experimental-cell.is-sharp-2 { fill: var(--orange); fill-opacity: 0.62; }
.experimental-cell.is-sharp-3 { fill: var(--orange); fill-opacity: 0.92; }

.experimental-inflection {
  fill: var(--yellow);
  stroke: var(--stage);
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.experimental-selected-scale {
  fill: none;
  stroke: var(--yellow);
  stroke-width: 2;
  stroke-dasharray: 5 3;
  vector-effect: non-scaling-stroke;
  pointer-events: none;
}

.experimental-axis-title {
  fill: var(--ink);
  font-weight: 800;
}

.experimental-energy-line {
  fill: none;
  stroke: var(--orange);
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.experimental-energy-point {
  fill: var(--panel);
  stroke: var(--orange);
  stroke-width: 1.8;
  vector-effect: non-scaling-stroke;
}

.experimental-energy-point.is-selected {
  fill: var(--yellow);
  stroke: var(--stage);
  stroke-width: 2;
}

.experimental-boundary {
  display: grid;
  grid-template-columns: minmax(180px, 0.34fr) minmax(0, 1fr);
  gap: 24px;
  margin-top: 18px;
  padding: 22px;
  border: 1px dashed rgba(240, 100, 60, 0.58);
  border-radius: 16px;
  background: rgba(242, 207, 99, 0.09);
}

.maturity-pair {
  display: flex;
  flex-direction: column;
  gap: 7px;
  align-items: flex-start;
}

.maturity-pair span {
  padding: 5px 8px;
  border: 1px solid rgba(21, 37, 32, 0.18);
  border-radius: 999px;
  background: rgba(251, 250, 244, 0.72);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.59rem;
  font-weight: 800;
}

.maturity-pair .is-experimental {
  border-color: rgba(240, 100, 60, 0.55);
  color: var(--orange);
}

.experimental-boundary h3 {
  margin: 0 0 7px;
  font-size: 1rem;
}

.experimental-boundary p,
.experimental-boundary li {
  color: var(--ink-soft);
  font-size: 0.72rem;
  line-height: 1.55;
}

.experimental-boundary p {
  margin: 0;
}

.experimental-boundary details {
  margin-top: 12px;
}

.experimental-boundary summary {
  width: fit-content;
  cursor: pointer;
  color: var(--ink);
  font-size: 0.72rem;
  font-weight: 800;
}

.experimental-boundary ul {
  margin: 9px 0 0;
  padding-left: 18px;
}

.experimental-source {
  margin-top: 12px !important;
}

.experimental-source a {
  color: var(--ink);
  text-underline-offset: 3px;
}

.experimental-status {
  min-height: 1.2em;
  margin-top: 10px !important;
  color: var(--orange) !important;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.62rem !important;
}

.experimental-plots .plot-card:last-child {
  grid-column: auto;
}

@media (max-width: 980px) {
  .experimental-plots {
    grid-template-columns: 1fr;
  }

  .experimental-plots .plot-card:last-child {
    grid-column: 1;
  }
}

@media (max-width: 780px) {
  .experimental-boundary {
    grid-template-columns: 1fr;
  }

  .maturity-pair {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

@media (max-width: 520px) {
  .experimental-section {
    padding-left: 16px;
    padding-right: 16px;
  }

  .experimental-boundary {
    padding: 18px;
  }
}

/* Reading scale and criterion controls; diagram coordinates remain unchanged. */
.hero-context {
  max-width: 660px;
  margin: 20px 0 0;
  color: var(--ink-soft);
  font-size: clamp(.92rem, 1.15vw, 1.05rem);
  line-height: 1.65;
}
.scoring-policy-control {
  display: grid;
  gap: 8px;
  margin: 18px 0;
}
.scoring-policy-control label {
  color: var(--ink-soft);
  font-size: .78rem;
  font-weight: 750;
}
.scoring-policy-control select {
  width: 100%;
  min-width: 0;
  min-height: 42px;
  padding-left: 14px;
  border-color: rgba(86, 108, 88, .5);
  border-radius: 12px;
  background-color: rgba(251, 250, 244, .75);
  font-size: .83rem;
  font-weight: 600;
}
.criteria-section { margin-top: clamp(82px, 10vw, 150px); }
.plot-heading small, .plot-heading output { font-size: .75rem; line-height: 1.45; }
.confidence-row small, .score-status, .score-limiting, .score-scale-note, .plot-caption,
.pipeline-summary, .export-status { font-size: .8rem; line-height: 1.55; }
.component-title strong { font-size: .82rem; }
.component-title span { font-size: .7rem; }
.component-quality strong { font-size: .8rem; }
.component-quality span { font-size: .68rem; }
.calculation-details summary, .button-compact { font-size: .79rem; }
.calculation-body, .comprehensive-panel .calculation-body p { font-size: .82rem; line-height: 1.6; }
.scale-stability-head strong { font-size: .78rem; }
.scale-stability-head span { font-size: .7rem; }
.scale-stability-cell span { font-size: .68rem; white-space: normal; line-height: 1.4; }
.theorem-tag, .experimental-tag { font-size: .67rem; }
.caliper-controls label, .turning-control label, .flow-control label { font-size: .82rem; }
.caliper-controls small, .turning-control small, .flow-control small { font-size: .76rem; line-height: 1.5; }
.caliper-metrics dt, .turning-metrics dt, .flow-metrics dt { font-size: .77rem; }
.caliper-metrics small, .turning-metrics small, .flow-metrics small { font-size: .74rem; line-height: 1.45; }
.caliper-narration, .turning-narration, .flow-narration { font-size: .81rem; line-height: 1.55; }
.caliper-boundary p, .turning-boundary p, .flow-boundary p,
.experimental-boundary p, .experimental-boundary li { font-size: .85rem; line-height: 1.65; }
.site-footer { font-size: .76rem; line-height: 1.5; }
.lab-nav a { font-size: 10.5px; }

/* Matching inset/outset lists allow interpolation on both entry and exit. */
:is(.lab-grid, .plot-card, .caliper-lab, .turning-lab, .flow-lab, .curvature-note, .geometry-first) {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0), 0 14px 38px rgba(21, 37, 32, .07), 0 0 0 1px rgba(183, 145, 92, 0);
}
:is(.button, .mode-button, .method-tab) {
  transition: transform 180ms ease, color 220ms ease, background-color 220ms ease, border-color 250ms ease, box-shadow 350ms ease;
}
.button, .mode-button, .method-tab { box-shadow: 0 3px 10px rgba(21, 37, 32, 0); }
.button-primary { box-shadow: 0 4px 12px rgba(21, 37, 32, .15); }
@media (hover: hover) and (pointer: fine) {
  :is(.button, .mode-button, .method-tab):hover {
    transform: translateY(-1px);
    box-shadow: 0 5px 14px rgba(21, 37, 32, .13);
  }
}
:is(.button, .mode-button, .method-tab):active { transform: translateY(0); }
.scoring-policy-control select { transition: border-color 250ms ease, box-shadow 350ms ease; }
.scoring-policy-control select:focus-visible { box-shadow: 0 0 0 3px rgba(85, 150, 117, .15); }
@media (max-width: 1199px) {
  .lab-nav { max-width: 720px; }
  .lab-nav a { font-size: 10px; }
}
@media (max-width: 520px) {
  .component-title { flex-wrap: wrap; gap: 2px 8px; }
  .component-title span { white-space: normal; }
  .scoring-policy-control select { font-size: .8rem; }
}
@media (prefers-reduced-motion: reduce) {
  :is(.button, .mode-button, .method-tab), .scoring-policy-control select { transition: none; }
  :is(.button, .mode-button, .method-tab):hover { transform: none; }
}