@font-face {
  font-family: "Nebula Sans";
  src: url("assets/fonts/nebula-sans/NebulaSans-Book.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Nebula Sans";
  src: url("assets/fonts/nebula-sans/NebulaSans-BookItalic.woff2") format("woff2");
  font-style: italic;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Nebula Sans";
  src: url("assets/fonts/nebula-sans/NebulaSans-Medium.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Nebula Sans";
  src: url("assets/fonts/nebula-sans/NebulaSans-Semibold.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: "Nebula Sans";
  src: url("assets/fonts/nebula-sans/NebulaSans-SemiboldItalic.woff2") format("woff2");
  font-style: italic;
  font-weight: 600;
  font-display: swap;
}

:root {
  color-scheme: light;
  --paper: #f4f5f1;
  --paper-raised: #fbfcf9;
  --paper-inset: #e8ece8;
  --ink: #121817;
  --ink-soft: #4d5653;
  --ink-faint: #707a76;
  --rule: #b6bcb8;
  --rule-strong: #6d7672;
  --accent: #1d5d73;
  --accent-deep: #123e4e;
  --effect-final: #1758c7;
  --header-bg: rgb(244 245 241 / 96%);
  --font-family: "Nebula Sans", Arial, Helvetica, sans-serif;
  --display: var(--font-family);
  --text: var(--font-family);
  /* Legacy utility selectors share the same family; no monospace face. */
  --mono: var(--font-family);
  --font-body: 1.125rem;
  --font-caption: 0.9375rem;
  --font-utility: 0.8125rem;
  --page-pad: clamp(1.25rem, 4vw, 4rem);
  --content-width: 78rem;
  /* One wide content column inside the page gutters, plus one reading width. */
  --section-width: calc(var(--content-width) - 2 * var(--page-pad));
  --prose-width: 48rem;
  --section-space: clamp(2.5rem, 4vw, 4rem);
  --record-space: clamp(2.5rem, 4vw, 3.5rem);
  --header-height: 3.75rem;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #111614;
  --paper-raised: #181e1b;
  --paper-inset: #202824;
  --ink: #edf1ec;
  --ink-soft: #b8c0bb;
  --ink-faint: #8d9892;
  --rule: #3f4944;
  --rule-strong: #727d77;
  --accent: #76b5ca;
  --accent-deep: #9bcedd;
  --effect-final: #78a9ff;
  --header-bg: rgb(17 22 20 / 96%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --paper: #111614;
    --paper-raised: #181e1b;
    --paper-inset: #202824;
    --ink: #edf1ec;
    --ink-soft: #b8c0bb;
    --ink-faint: #8d9892;
    --rule: #3f4944;
    --rule-strong: #727d77;
    --accent: #76b5ca;
    --accent-deep: #9bcedd;
    --effect-final: #78a9ff;
    --header-bg: rgb(17 22 20 / 96%);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
  scroll-padding-top: calc(var(--header-height) + 1rem);
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--text);
  font-size: var(--font-body);
  font-weight: 400;
  font-synthesis: none;
  line-height: 1.58;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

button {
  color: inherit;
  font: inherit;
}

h1, h2, h3, h4, h5, h6, strong, b {
  font-weight: 600;
}

button,
.site-nav,
.hero__dates,
.report-chapters summary,
.report-downloads {
  font-weight: 500;
}

img,
svg {
  display: block;
  max-width: 100%;
}

::selection {
  color: var(--paper-raised);
  background: var(--accent);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.6rem 0.85rem;
  color: var(--paper-raised);
  background: var(--ink);
  font-family: var(--mono);
  font-size: 0.72rem;
  text-decoration: none;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  min-height: var(--header-height);
  padding-inline: max(var(--page-pad), calc((100% - var(--content-width)) / 2 + var(--page-pad)));
  border-bottom: 1px solid var(--rule-strong);
  background: var(--header-bg);
}

.site-mark {
  display: flex;
  align-items: center;
  width: fit-content;
  text-decoration: none;
}

.site-mark__name {
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 600;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-right: 2rem;
}

.site-nav a {
  font-family: var(--mono);
  font-size: var(--font-utility);
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a:hover {
  color: var(--accent-deep);
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

.site-tools {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.tool-button {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.55rem;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-family: var(--mono);
  font-size: var(--font-utility);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.tool-button svg {
  width: 0.95rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: square;
  stroke-width: 1.5;
}

.tool-button:hover {
  color: var(--accent-deep);
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

.share-status {
  position: fixed;
  z-index: 30;
  right: 1rem;
  bottom: 1rem;
  max-width: calc(100vw - 2rem);
  padding: 0;
  color: var(--paper-raised);
  background: var(--ink);
  font-family: var(--mono);
  font-size: 0.72rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.5rem);
}

.share-status[data-visible="true"] {
  padding: 0.65rem 0.85rem;
  opacity: 1;
  transform: translateY(0);
}

.initiative-signoff {
  width: min(32vw, 9rem);
  margin: 2rem auto 3rem;
  text-align: center;
}

.initiative-signoff p {
  margin: 0;
  font-family: var(--display);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.initiative-signoff__title { font-size: 0.6rem; }
.initiative-signoff__motto { font-size: 0.5rem; }

.initiative-signoff img {
  display: block;
  width: 85%;
  height: auto;
  margin: 0.75rem auto;
}

main,
.site-footer {
  width: min(100%, var(--content-width));
  margin-inline: auto;
}

.hero {
  padding: var(--section-space) var(--page-pad);
}

.hero__title-block {
  max-width: var(--section-width);
  margin-top: clamp(1.5rem, 4vw, 3rem);
}

.hero__dates {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 0.4rem 1.5rem;
  margin: 0 0 1.25rem;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: var(--font-utility);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero__dates p {
  margin: 0;
}

.release-date {
  width: 100%;
  text-align: center;
}

.hero__dates > .release-date {
  width: auto;
  text-align: left;
}

.hero h1 {
  max-width: 14ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3.25rem, 7vw, 5.8rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 0.94;
  white-space: nowrap;
}

.hero__effect {
  max-width: 48rem;
  min-height: 1.5em;
  margin: 1.35rem 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.8vw, 1.28rem);
  line-height: 1.35;
}

.hero__effect-prefix {
  display: inline;
}

.hero__effect-name {
  position: relative;
  top: 0;
  display: inline;
  color: inherit;
  font-style: italic;
  transition: opacity 320ms ease, top 320ms ease;
  will-change: opacity, top, color;
}

.hero__effect.is-settled .hero__effect-name {
  color: var(--effect-final);
  transition: opacity 320ms ease, top 320ms ease, color 950ms ease;
}

.hero__effect[data-effect-mode="type"] .hero__effect-name::after {
  display: inline-block;
  width: 1px;
  height: 0.9em;
  margin-left: 0.12em;
  background: currentColor;
  content: "";
  animation: effect-caret 900ms steps(1, end) infinite;
}

.hero__effect.is-settled[data-effect-mode="type"] .hero__effect-name::after {
  animation: none;
  opacity: 0;
}

@keyframes effect-caret {
  0%,
  48% {
    opacity: 1;
  }

  49%,
  100% {
    opacity: 0;
  }
}

.hero__summary {
  max-width: var(--prose-width);
  margin: 0.85rem 0 0;
  color: var(--ink-soft);
  font-size: var(--font-body);
  line-height: 1.58;
}

.hero__summary p {
  margin: 0;
}

.hero__summary p + p {
  margin-top: 1.15rem;
}

.section {
  padding: var(--section-space) var(--page-pad);
  border-top: 1px solid var(--rule-strong);
}

.section[id],
.science-module[id] {
  scroll-margin-top: calc(var(--header-height) + 1rem);
}

.section-heading {
  max-width: var(--section-width);
}

.section-disclosure__toggle {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 0.55em;
  width: 100%;
  min-height: 2.75rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  text-align: left;
  cursor: pointer;
}

.section-disclosure__toggle::before {
  content: '';
  position: absolute;
  left: -0.55em;
  top: 0.35em;
  width: 0.3em;
  height: 0.3em;
  border-right: 0.07em solid currentColor;
  border-bottom: 0.07em solid currentColor;
  transform: translateY(-0.15em) rotate(45deg);
}

.section-disclosure__toggle[aria-expanded="false"]::before {
  transform: rotate(-45deg);
}

.section-disclosure__toggle:hover { color: var(--accent); }
.section-disclosure__body[hidden] { display: none; }

.section-heading h2,
.section--closing h2 {
  max-width: var(--section-width);
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.8rem, 3vw, 2.55rem);
  font-weight: 600;
  letter-spacing: -0.012em;
  line-height: 1.04;
}


.section-deck {
  max-width: var(--prose-width);
  margin: 1.25rem 0 0;
  color: var(--ink-soft);
  font-size: var(--font-body);
  line-height: 1.58;
}

.finding-figure {
  margin: 1.5rem 0 0;
}

.finding-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  background: #fff;
}

.finding-figure figcaption {
  max-width: var(--prose-width);
  margin-top: 0.65rem;
  color: var(--ink-faint);
  font-size: var(--font-caption);
  line-height: 1.45;
}

.evidence-viewer {
  max-width: 48rem;
}

.evidence-viewer.is-ready .evidence-viewer__stage {
  position: relative;
  overflow: hidden;
  margin-top: 1.5rem;
  touch-action: pan-y;
}

.evidence-viewer.is-ready .evidence-viewer__slide {
  display: none;
  max-width: none;
  margin: 0;
}

.evidence-viewer.is-ready .evidence-viewer__slide.is-active {
  display: block;
}

.evidence-viewer.is-ready .evidence-viewer__media {
  position: relative;
  display: grid;
  width: 100%;
  aspect-ratio: 4 / 3;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--rule);
  background: var(--paper);
}

.evidence-viewer.is-ready .evidence-viewer__media img,
.evidence-viewer.is-ready .evidence-viewer__media video {
  display: block;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  border: 0;
  object-fit: contain;
  object-position: center;
}

.evidence-viewer.is-ready .evidence-viewer__media img {
  background: transparent;
}

.evidence-viewer.is-ready .evidence-viewer__slide figcaption {
  min-height: 4rem;
}

.evidence-viewer__label {
  position: absolute;
  z-index: 2;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.35rem 0.48rem;
  color: #fff;
  background: rgb(12 17 16 / 82%);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  line-height: 1;
  text-transform: uppercase;
  pointer-events: none;
  opacity: 1;
}

.evidence-viewer__controls {
  position: absolute;
  z-index: 3;
  inset: 0 0 auto;
  aspect-ratio: 4 / 3;
  pointer-events: none;
}

.evidence-viewer__arrow,
.evidence-viewer__choice {
  border: 0;
  background: transparent;
  cursor: pointer;
  pointer-events: auto;
}

.evidence-viewer__arrow {
  position: absolute;
  top: 50%;
  display: grid;
  width: 2.5rem;
  height: 3.25rem;
  place-items: center;
  padding: 0;
  color: #fff;
  font-size: 2.25rem;
  line-height: 1;
  text-shadow: 0 1px 5px rgb(0 0 0 / 90%);
  opacity: 0.72;
  transform: translateY(-50%);
}

.evidence-viewer__arrow[data-evidence-prev] {
  left: 0.35rem;
}

.evidence-viewer__arrow[data-evidence-next] {
  right: 0.35rem;
}

.evidence-viewer__choices {
  position: absolute;
  bottom: 0.65rem;
  left: 50%;
  display: flex;
  align-items: center;
  gap: 0.08rem;
  transform: translateX(-50%);
}

.evidence-viewer__loop-toggle {
  position: absolute;
  z-index: 4;
  top: 0.7rem;
  right: 0.7rem;
  min-width: 3.6rem;
  padding: 0.38rem 0.5rem;
  border: 1px solid rgb(255 255 255 / 72%);
  color: #fff;
  background: rgb(12 17 16 / 76%);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1;
  text-transform: uppercase;
  cursor: pointer;
  pointer-events: auto;
}

.evidence-viewer__loop-toggle:hover {
  background: rgb(12 17 16 / 94%);
}

.evidence-viewer__loop-toggle:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.evidence-viewer__choice {
  position: relative;
  width: 1.45rem;
  height: 1.45rem;
  padding: 0;
}

.evidence-viewer__choice::before {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.42rem;
  height: 0.42rem;
  border: 1px solid rgb(255 255 255 / 90%);
  border-radius: 50%;
  background: rgb(15 20 19 / 42%);
  box-shadow: 0 1px 3px rgb(0 0 0 / 70%);
  content: "";
  transform: translate(-50%, -50%);
}

.evidence-viewer__choice[aria-pressed="true"]::before {
  background: var(--accent);
  transform: translate(-50%, -50%) scale(1.35);
}

.evidence-viewer__arrow:hover {
  opacity: 1;
}

.evidence-viewer__choice:hover::before {
  background: var(--accent);
}

.evidence-viewer__arrow:focus-visible,
.evidence-viewer__choice:focus-visible {
  outline: 2px solid #fff;
  outline-offset: -2px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.scope-note {
  max-width: var(--prose-width);
  margin: 1.15rem 0 0;
  color: var(--ink-soft);
}

.scope-layout {
  max-width: var(--prose-width);
  margin-top: 1.5rem;
}

.scope-tracks article {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  column-gap: 1rem;
  padding: 1.35rem 0 1.6rem;
}

.scope-tracks h3,
.scope-tracks article > p {
  margin: 0;
}

.scope-tracks h3 {
  font-family: var(--display);
  font-size: 1.35rem;
  line-height: 1.1;
}

.scope-tracks article > p {
  margin-top: 0.55rem;
  color: var(--ink-soft);
}

@media (max-width: 640px) {

}

.finding-statement {
  max-width: var(--section-width);
  margin-top: var(--record-space);
}

.section--summary .finding-statement {
  margin-top: 0;
}

.science-list {
  max-width: var(--section-width);
  margin-top: 2rem;
}

.section--science .science-module:first-child {
  border-top: 0;
  padding-top: 0;
}

.section--science .science-module:last-child {
  padding-bottom: 0;
}

.science-module__viewer.is-ready .evidence-viewer__stage {
  margin-top: 0;
}

.science-module {
  display: grid;
  grid-template-columns: minmax(21rem, 1.1fr) minmax(0, 0.9fr);
  column-gap: clamp(2rem, 3vw, 3rem);
  row-gap: clamp(1.5rem, 2vw, 2rem);
  align-items: start;
  padding: clamp(1.5rem, 3vw, 2.5rem) 0;
  border-top: 1px solid var(--rule-strong);
}

.science-module__copy {
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
}


.science-module h3 {
  max-width: none;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  line-height: 1.08;
}

.science-module__copy > p {
  max-width: var(--prose-width);
  margin: 1rem 0 0;
  color: var(--ink-soft);
  line-height: 1.58;
}


.science-module__copy h4 {
  margin: 1.5rem 0 0;
  font-family: var(--display);
  font-size: 1.15rem;
  line-height: 1.2;
}

.science-module__viewer {
  width: 100%;
}

.section--program {
  border-top: 0;
}


.method-video-record {
  max-width: var(--section-width);
  margin-top: var(--record-space);
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule-strong);
}

.engineering-record {
  max-width: var(--section-width);
  margin-top: var(--record-space);
}

.engineering-record .pressure-systems {
  margin-top: 2rem;
}

.method-media__heading,
.method-video-record__heading {
  max-width: var(--section-width);
}

.method-media__heading h3,
.method-media__heading p,
.method-video-record__heading h3,
.method-video-record__heading p {
  margin: 0;
}

.method-media__heading h3,
.method-video-record__heading h3 {
  font-family: var(--display);
  font-size: 1.35rem;
  line-height: 1.1;
}

.method-media__heading p,
.method-video-record__heading p {
  max-width: var(--prose-width);
  margin-top: 0.75rem;
  color: var(--ink-soft);
}

.method-media__heading p + p {
  margin-top: 1rem;
}

.engineering-record .evidence-viewer.is-ready .evidence-viewer__slide figcaption {
  min-height: 0;
}

.facilities-viewer {
  max-width: var(--section-width);
}

.facilities-viewer.evidence-viewer.is-ready .evidence-viewer__media,
.facilities-viewer .evidence-viewer__controls {
  aspect-ratio: 16 / 9;
}

.loop-viewer {
  max-width: var(--section-width);
}

.loop-viewer.evidence-viewer.is-ready .evidence-viewer__media,
.loop-viewer .evidence-viewer__controls {
  aspect-ratio: 16 / 9;
}

.loop-viewer.evidence-viewer.is-ready .evidence-viewer__media {
  background: #080a09;
}

.video-loop-caption,
.video-loop-caption h4,
.video-loop-commentary p {
  margin: 0;
}

.loop-viewer.evidence-viewer.is-ready .video-loop-caption {
  max-width: var(--prose-width);
  min-height: 10.5rem;
  margin-top: 0.8rem;
}

.video-loop-commentary > span {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.video-loop-caption h4 {
  margin-top: 0;
  color: var(--ink);
  font-family: var(--display);
  font-size: 1rem;
  line-height: 1.25;
}

.video-loop-commentary {
  min-height: 6rem;
  margin-top: 0.9rem;
  padding: 0.75rem 0;
  border: 0;
  border-top: 1px solid var(--rule);
  color: var(--ink-soft);
}

.video-loop-commentary p {
  margin-top: 0.45rem;
  font-size: var(--font-caption);
  line-height: 1.4;
}

.pressure-systems {
  margin: clamp(3rem, 6vw, 5rem) 0 0;
}

.pressure-systems__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.75rem, 2vw, 1.5rem);
}

.pressure-systems__grid img {
  display: block;
  justify-self: center;
  width: 100%;
  max-width: 25rem;
  height: auto;
  background: #fff;
}

.pressure-systems figcaption {
  max-width: var(--prose-width);
  margin-top: 0.75rem;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.65rem;
  line-height: 1.45;
}

.report-list {
  max-width: var(--section-width);
  margin-top: 2rem;
  border-top: 1px solid var(--rule-strong);
}

.report-card {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--rule-strong);
}

.report-card__copy p,
.report-card__copy h3 {
  margin: 0;
}

.report-card__copy h3 {
  font-family: var(--display);
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  line-height: 1.12;
}

.report-card__copy p:last-child {
  margin-top: 0.4rem;
  color: var(--ink-soft);
}

.report-card__copy > p + p {
  margin-top: 0.75rem;
}

.report-card__copy > p:not(.report-downloads) {
  max-width: var(--prose-width);
}

.report-downloads {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.report-download-pair {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.75rem;
}

.report-reader-link {
  white-space: nowrap;
}

.report-chapters {
  margin-top: 1rem;
}

.report-chapters summary {
  width: fit-content;
  cursor: pointer;
}

.report-chapters summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.report-chapters ul {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
}

.report-chapters li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: baseline;
  gap: 0.25rem 1rem;
  padding: 0.5rem 0;
  border-top: 1px solid var(--rule);
}

.report-chapters li a {
  min-width: 0;
}

.report-chapters li span {
  grid-column: 2;
  grid-row: 1;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.7rem;
  white-space: nowrap;
}

.report-chapters .report-reader-link {
  grid-column: 3;
  grid-row: 1;
}

@media (max-width: 640px) {
  .report-chapters li {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .report-chapters .report-reader-link {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-self: start;
  }
}

.section--closing {
  display: block;
  border-top: 1px solid var(--rule-strong);
}

.section--closing h2 {
  margin-top: 0;
}

.closing-copy {
  max-width: var(--section-width);
  margin-top: 1.5rem;
}

.closing-copy > p {
  max-width: var(--prose-width);
  margin: 0;
  color: var(--ink-soft);
  font-size: var(--font-body);
}

.closing-copy .contributor-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  max-width: none;
  text-align: center;
  gap: 0.35rem 0.65rem;
  margin-top: 1.25rem;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

.contributor-entry {
  white-space: nowrap;
}

.contributor-name {
  white-space: pre;
  letter-spacing: 0;
}

.contributor-list .contributor-separator {
  color: var(--ink-faint);
}

.closing-copy .contributor-review {
  max-width: none;
  margin: 0.65rem 0 1.5rem;
  text-align: center;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

.closing-copy .contributor-thanks {
  margin-inline: auto;
  text-align: center;
}


.site-footer {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 2rem var(--page-pad) 2.5rem;
  border-top: 1px solid var(--rule-strong);
  font-family: var(--mono);
  font-size: var(--font-utility);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.site-footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  width: 100%;
}

.site-footer__meta > .release-date {
  flex-basis: 100%;
  order: 1;
}

.site-footer p {
  margin: 0.15rem 0;
}

.site-footer__title {
  font-weight: 600;
}

.site-footer__ai-disclosure {
  width: 100%;
  text-align: center;
  color: var(--ink-faint);
  font-family: var(--text);
  font-size: var(--font-caption);
  line-height: 1.5;
  letter-spacing: normal;
  text-transform: none;
}

.site-footer a {
  color: var(--accent-deep);
  text-underline-offset: 0.25em;
}

@media (max-width: 62rem) {
  .site-nav {
    display: none;
  }

  .site-header {
    grid-template-columns: 1fr auto;
  }

  .pressure-systems__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .science-module {
    grid-template-columns: 1fr;
  }

  .science-module__copy {
    position: static;
    max-width: var(--section-width);
  }

}

@media (max-width: 48rem) {
  :root {
    --header-height: 3.5rem;
  }

  .tool-button span:not(#theme-label) {
    display: none;
  }

  .tool-button {
    padding-inline: 0.4rem;
  }

  .hero__title-block {
    margin-top: 1rem;
  }

  .hero__summary {
    margin-top: 1rem;
  }

  .hero__dates {
    display: block;
  }

  .hero__dates p + p {
    margin-top: 0.25rem;
  }

  .evidence-viewer.is-ready .evidence-viewer__media,
  .evidence-viewer__controls {
    aspect-ratio: 4 / 3;
  }

  .evidence-viewer.is-ready .evidence-viewer__slide figcaption {
    min-height: 5rem;
  }

  .facilities-viewer.evidence-viewer.is-ready .evidence-viewer__media,
  .facilities-viewer .evidence-viewer__controls {
    aspect-ratio: 4 / 3;
  }

  .loop-viewer.evidence-viewer.is-ready .evidence-viewer__media,
  .loop-viewer .evidence-viewer__controls {
    aspect-ratio: 16 / 9;
  }

  .loop-viewer.evidence-viewer.is-ready .video-loop-caption {
    min-height: 13.25rem;
  }

  .pressure-systems__grid {
    grid-template-columns: 1fr;
  }

  .site-footer__meta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 34rem) {
  .hero h1 {
    font-size: clamp(2rem, 10.5vw, 3.5rem);
  }

  .site-mark__name {
    font-size: 0.9rem;
  }

  .evidence-viewer__arrow {
    width: 2.25rem;
  }

  .evidence-viewer__label {
    top: 0.55rem;
    left: 0.55rem;
  }

}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }


  .hero__effect[data-effect-mode="type"] .hero__effect-name::after {
    content: none;
  }

  .hero__effect[data-motion-override="true"] .hero__effect-name {
    transition-duration: 320ms, 320ms !important;
  }

  .hero__effect.is-settled[data-motion-override="true"] .hero__effect-name {
    transition-duration: 320ms, 320ms, 950ms !important;
  }


  .hero__effect[data-motion-override="true"][data-effect-mode="type"]
    .hero__effect-name::after {
    content: "";
    animation: effect-caret 900ms steps(1, end) infinite !important;
  }

  .hero__effect.is-settled[data-motion-override="true"][data-effect-mode="type"]
    .hero__effect-name::after {
    animation: none !important;
    opacity: 0;
  }
}

/* Evidence is read after the finding, at full column width. Controls and labels
   live outside the image so no axis, legend, or apparatus detail is covered. */
@media screen {
  .science-module { grid-template-columns: minmax(0, 1fr); }
  .science-module__copy { position: static; }
  .science-module__viewer { max-width: none; min-width: 0; }
  .evidence-viewer.is-ready:not(.loop-viewer) .evidence-viewer__media {
    display: block;
    aspect-ratio: auto;
    /* Limit height by narrowing the whole frame, not letterboxing the image.
       Small viewport units avoid resizing when mobile browser chrome hides. */
    width: min(100%, calc(70vh * var(--image-aspect, 1)));
    width: min(100%, calc(70svh * var(--image-aspect, 1)));
    margin-inline: auto;
  }
  .evidence-viewer.is-ready .evidence-viewer__media img { height: auto; }
  .evidence-viewer.is-ready .evidence-viewer__slide figcaption { min-height: 0; }
  .evidence-viewer .evidence-viewer__label {
    position: static;
    display: inline-block;
    margin-bottom: 0.5rem;
    color: var(--ink-soft);
    background: transparent;
    padding: 0;
  }
  .evidence-viewer .evidence-viewer__controls {
    position: static;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0 0 0.75rem;
    aspect-ratio: auto;
    pointer-events: auto;
  }
  .evidence-viewer .evidence-viewer__arrow {
    position: static;
    flex: 0 0 3rem;
    width: 3rem;
    height: 3rem;
    transform: none;
    opacity: 1;
    color: #fff;
    background: #172321;
    border: 1px solid #879893;
    border-radius: 0.25rem;
    text-shadow: none;
  }
  .evidence-viewer .evidence-viewer__arrow:hover { background: #344b46; }
  .evidence-viewer .evidence-viewer__choices {
    position: static;
    flex: 1;
    flex-wrap: wrap;
    justify-content: center;
    transform: none;
  }
  .evidence-viewer .evidence-viewer__choice { width: 1.65rem; height: 2.75rem; }
  .evidence-viewer__choice::before { border-color: var(--ink-soft); box-shadow: none; }
  .evidence-viewer .evidence-viewer__loop-toggle {
    position: static;
    min-height: 3rem;
  }
  .evidence-viewer__arrow:focus-visible,
  .evidence-viewer__choice:focus-visible { outline-color: var(--accent); }
}

@media print {
  .section-disclosure__body[hidden] { display: block !important; }
  .section-disclosure__toggle::before { display: none; }
  .section-disclosure__toggle { display: block; min-height: 0; }

  :root,
  :root[data-theme="dark"] {
    color-scheme: light;
    --paper: #fff;
    --paper-raised: #fff;
    --paper-inset: #eee;
    --ink: #000;
    --ink-soft: #222;
    --ink-faint: #555;
    --rule: #aaa;
    --rule-strong: #333;
    --accent: #000;
    --accent-deep: #000;
  }

  [data-print="hide"],
  .share-status {
    display: none !important;
  }

  body {
    background: #fff;
    font-size: 10pt;
  }

  main,
  .site-footer {
    width: 100%;
  }

  .section {
    break-inside: avoid;
  }

  .evidence-viewer.is-ready .evidence-viewer__stage {
    display: block;
    overflow: visible;
    margin-top: 0;
  }

  .evidence-viewer.is-ready .evidence-viewer__slide {
    display: block;
    animation: none;
    transform: none;
  }

  .evidence-viewer.is-ready .evidence-viewer__media {
    display: block;
    aspect-ratio: auto;
    overflow: visible;
    border: 0;
  }

  .evidence-viewer.is-ready .evidence-viewer__media img,
  .evidence-viewer.is-ready .evidence-viewer__media video {
    height: auto;
    border: 1px solid var(--rule);
  }

  .evidence-viewer.is-ready .evidence-viewer__slide figcaption {
    min-height: 0;
  }

  .evidence-viewer__label {
    display: none;
  }
}