:root {
  --md-primary-fg-color: #14211d;
  --md-primary-fg-color--light: #294038;
  --md-primary-fg-color--dark: #0d1714;
  --md-accent-fg-color: #0b6b62;
  --hub-paper: #f6f5f1;
  --hub-surface: #ffffff;
  --hub-ink: #17201d;
  --hub-muted: #66716c;
  --hub-line: #d8ddd9;
  --hub-teal: #0b6b62;
  --hub-teal-dark: #06483f;
  --hub-teal-soft: #dcece8;
  --hub-nav-active-bg: #eaf2ef;
  --hub-amber: #b66b16;
  --hub-amber-soft: #f5e8d5;
  --hub-blue: #356a91;
  --hub-blue-soft: #e4edf4;
  --hub-red: #a33b36;
  --hub-red-soft: #f5e2df;
}

[data-md-color-scheme="default"] {
  --md-default-bg-color: var(--hub-paper);
  --md-default-fg-color: var(--hub-ink);
  --md-typeset-a-color: var(--hub-teal);
}

.md-grid {
  max-width: 84rem;
}

.md-header,
.md-tabs {
  background: #14211d;
}

.md-tabs__link {
  font-size: 0.74rem;
  font-weight: 600;
}

.md-tabs__item--active > .md-tabs__link {
  font-weight: 800;
}

/* ProtoMotions-like navigation tree: quiet headings, clear nesting. */
.md-sidebar--primary
  .md-nav--primary
  > .md-nav__list
  > .md-nav__item--active
  > .md-nav__container
  > a.md-nav__link,
.md-sidebar--primary .md-nav[data-md-level="1"] > .md-nav__title {
  font-size: 0.84rem;
  font-weight: 800;
}

.md-sidebar--primary
  .md-nav[data-md-level="1"]
  > .md-nav__list
  > .md-nav__item--section {
  margin-top: 0.78rem !important;
}

.md-sidebar--primary
  .md-nav[data-md-level="1"]
  > .md-nav__list
  > .md-nav__item
  > .md-nav__link {
  padding-left: 0.12rem !important;
  padding-right: 0.12rem !important;
  font-size: 0.7rem;
  font-weight: 700;
}

.md-sidebar--primary
  .md-nav[data-md-level="1"]
  > .md-nav__list
  > .md-nav__item--section
  > .md-nav__link {
  padding: 0.24rem 0.12rem !important;
  color: var(--hub-ink);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  background: transparent;
}

.md-sidebar--primary
  .md-nav[data-md-level="1"]
  > .md-nav__list
  > .md-nav__item--section
  > .md-nav[data-md-level="2"] {
  margin: 0.14rem 0 0.5rem 0.12rem !important;
  padding-left: 0 !important;
  border-left: 1px solid var(--hub-line);
}

.md-sidebar--primary
  .md-nav[data-md-level="2"]
  > .md-nav__list
  > .md-nav__item {
  margin: 0 !important;
}

.md-sidebar--primary
  .md-nav[data-md-level="2"]
  > .md-nav__list
  > .md-nav__item
  > .md-nav__link {
  margin-top: 0.08rem !important;
  padding: 0.08rem 0.34rem !important;
  font-weight: 400;
  line-height: 1.35;
  border-radius: 0.15rem;
}

.md-sidebar--primary .md-nav[data-md-level="2"] .md-nav__link--active {
  box-shadow: inset 2px 0 0 var(--hub-teal);
  font-weight: 700;
  color: var(--hub-teal);
  background: var(--hub-nav-active-bg);
}

.md-sidebar--primary
  .md-nav[data-md-level="2"]
  .md-nav[data-md-level="3"] {
  margin-left: 0.04rem !important;
  padding-left: 0.1rem !important;
  border-left: 1px solid var(--hub-line);
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  letter-spacing: -0.015em;
}

.md-typeset h1 {
  color: var(--hub-ink);
}

.hub-hero {
  margin: 0 0 1.4rem;
  padding: 2.1rem 2.3rem;
  color: #f8fbfa;
  background: linear-gradient(125deg, #14211d 0%, #173d35 70%, #0b6b62 125%);
  border-left: 6px solid #6dc7b7;
  box-shadow: 0 14px 34px rgba(20, 33, 29, 0.12);
}

.hub-hero h2 {
  max-width: 48rem;
  margin: 0.35rem 0 0.75rem;
  color: #fff;
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  line-height: 1.22;
}

.hub-hero p {
  max-width: 48rem;
  color: #d5e2de;
}

.hub-hero .md-button {
  margin-top: 0.45rem;
  color: #f7fffc;
  border-color: #76b7aa;
}

.hub-hero .md-button--primary {
  color: #10251f;
  background: #cce8e1;
  border-color: #cce8e1;
}

.hub-kicker {
  color: #92d5c8;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.hub-status-grid,
.hub-card-grid {
  display: grid;
  gap: 0.75rem;
}

.hub-status-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 1.25rem 0 2.2rem;
}

.hub-status {
  min-height: 7.3rem;
  padding: 1rem 1.05rem;
  background: var(--hub-surface);
  border: 1px solid var(--hub-line);
  border-top: 4px solid var(--hub-teal);
}

.hub-status--active {
  border-top-color: var(--hub-blue);
}

.hub-status--pending {
  border-top-color: var(--hub-amber);
}

.hub-status p {
  margin: 0.45rem 0 0;
  color: var(--hub-muted);
  font-size: 0.78rem;
}

.hub-card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 1rem 0 2.4rem;
}

.md-typeset .hub-card {
  display: flex;
  min-height: 10rem;
  flex-direction: column;
  padding: 1.15rem 1.2rem;
  color: var(--hub-ink);
  text-decoration: none;
  background: var(--hub-surface);
  border: 1px solid var(--hub-line);
  border-top: 4px solid var(--hub-teal);
  transition: transform 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
}

.md-typeset .hub-card:hover {
  transform: translateY(-2px);
  border-color: #aebbb5;
  box-shadow: 0 10px 24px rgba(20, 33, 29, 0.08);
}

.hub-card > span {
  color: var(--hub-teal);
  font-size: 0.62rem;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.hub-card > strong {
  margin: 0.38rem 0 0.55rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.16rem;
  font-weight: 500;
}

.hub-card > small {
  color: var(--hub-muted);
  font-size: 0.75rem;
  line-height: 1.55;
}

.hub-card--related,
.hub-card--guide {
  border-top-color: var(--hub-blue) !important;
}

.hub-card--experiment,
.hub-card--paper {
  border-top-color: var(--hub-amber) !important;
}

.hub-card--evidence {
  border-top-color: var(--hub-red) !important;
}

.md-typeset table:not([class]) {
  background: var(--hub-surface);
  border: 1px solid var(--hub-line);
  box-shadow: none;
}

.md-typeset table:not([class]) th {
  color: #34413c;
  background: #e8ece9;
}

/* The physics-control table uses three low-saturation divider rows to make
   the action-space taxonomy scannable without coloring individual methods. */
.physics-control-table tbody tr:nth-child(1) td {
  background: var(--hub-teal-soft);
  border-top: 3px solid var(--hub-teal);
}

.physics-control-table tbody tr:nth-child(6) td {
  background: var(--hub-amber-soft);
  border-top: 3px solid var(--hub-amber);
}

.physics-control-table tbody tr:nth-child(10) td {
  background: var(--hub-blue-soft);
  border-top: 3px solid var(--hub-blue);
}

.physics-control-table tbody tr:nth-child(13) td {
  background: #ede7f5;
  border-top: 3px solid #765a91;
}

.physics-control-table tbody tr:nth-child(1) td:first-child,
.physics-control-table tbody tr:nth-child(6) td:first-child,
.physics-control-table tbody tr:nth-child(10) td:first-child,
.physics-control-table tbody tr:nth-child(13) td:first-child {
  color: var(--hub-ink);
  font-weight: 800;
}

.physics-control-table tbody tr:nth-child(4) td {
  color: var(--hub-muted);
  background: #f0f1ef;
}

.md-typeset .arithmatex {
  overflow-x: auto;
  overflow-y: hidden;
}

.md-typeset .arithmatex > mjx-container[display="true"] {
  margin: 0.85rem 0 !important;
  padding: 0.25rem 0;
}

.md-typeset .admonition,
.md-typeset details {
  border-radius: 0;
  box-shadow: none;
}

/* ARCTIC diagnostic videos are deliberately arranged as fixed method pairs so
   collaborators can compare the same case without opening separate pages. */
.rollout-compare-page {
  max-width: 78rem;
}

.rollout-compare-page .rollout-compare {
  margin: 2.2rem 0;
  padding: 1.1rem;
  background: var(--hub-surface);
  border: 1px solid var(--hub-line);
}

.rollout-compare-page .rollout-compare__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin: 0 0 0.9rem;
}

.rollout-compare-page .rollout-compare__head h3 {
  margin: 0;
}

.rollout-compare-page .rollout-compare__head p {
  margin: 0;
  color: var(--hub-muted);
  font-size: 0.78rem;
}

.rollout-compare-page .rollout-compare__videos {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.rollout-compare-page figure {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  background: #111;
  border: 1px solid var(--hub-line);
}

.rollout-compare-page figcaption {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.45rem 0.65rem;
  color: var(--hub-ink);
  background: var(--hub-paper);
  font-size: 0.78rem;
}

.rollout-compare-page figcaption span {
  color: var(--hub-muted);
}

.rollout-status {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 0.16rem 0.48rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
}

.rollout-status--success {
  color: #19733d !important;
  background: #eaf8ef;
}

.rollout-status--fail {
  color: #b42318 !important;
  background: #fff0ef;
}

.rollout-compare-page .rollout-compare__head p {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.rollout-compare-page video {
  display: block;
  width: 100%;
  aspect-ratio: 1440 / 416;
  background: #111;
}

@media screen and (max-width: 76rem) {
  .hub-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media screen and (max-width: 44rem) {
  .hub-hero {
    padding: 1.4rem 1.25rem;
  }

  .hub-status-grid,
  .hub-card-grid {
    grid-template-columns: 1fr;
  }

  .rollout-compare-page .rollout-compare {
    padding: 0.75rem;
  }

  .rollout-compare-page .rollout-compare__videos {
    grid-template-columns: 1fr;
  }
}

[data-md-color-scheme="slate"] {
  --hub-paper: #111815;
  --hub-surface: #19231f;
  --hub-ink: #ecf2ef;
  --hub-muted: #aebbb5;
  --hub-line: #34413c;
  --hub-teal-soft: #203a34;
  --hub-nav-active-bg: #1d302b;
}

[data-md-color-scheme="slate"] .md-typeset h1,
[data-md-color-scheme="slate"] .md-typeset .hub-card,
[data-md-color-scheme="slate"] .hub-status {
  color: var(--hub-ink);
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) th {
  color: #dce6e1;
  background: #26332e;
}

[data-md-color-scheme="slate"] .physics-control-table tbody tr:nth-child(1) td {
  background: #203a34;
}

[data-md-color-scheme="slate"] .physics-control-table tbody tr:nth-child(6) td {
  background: #3d3020;
}

[data-md-color-scheme="slate"] .physics-control-table tbody tr:nth-child(10) td {
  background: #233342;
}

[data-md-color-scheme="slate"] .physics-control-table tbody tr:nth-child(13) td {
  background: #332943;
}

[data-md-color-scheme="slate"] .physics-control-table tbody tr:nth-child(4) td {
  color: #a7b0ab;
  background: #2c302e;
}

/* Shared paper-deliverable checklist. The public page is readable by anyone;
   mutations are handled by the authenticated companion server. */
.shared-checklist {
  margin: 1.1rem 0 2rem;
}

.shared-checklist__status {
  position: sticky;
  top: 3.25rem;
  z-index: 2;
  margin: 0 0 1.25rem;
  padding: 0.8rem 0.95rem;
  background: color-mix(in srgb, var(--hub-surface) 94%, var(--hub-teal-soft));
  border: 1px solid var(--hub-line);
  border-left: 4px solid var(--hub-teal);
  box-shadow: 0 5px 16px rgba(20, 33, 29, 0.07);
}

.shared-checklist__status-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.shared-checklist__status small {
  display: block;
  margin-top: 0.35rem;
  color: var(--hub-muted);
}

.shared-checklist__progress {
  height: 0.32rem;
  margin-top: 0.5rem;
  overflow: hidden;
  background: var(--hub-line);
  border-radius: 999px;
}

.shared-checklist__progress-fill {
  display: block;
  width: 0;
  height: 100%;
  background: var(--hub-teal);
  transition: width 180ms ease;
}

.shared-checklist .task-list {
  margin-left: 0;
}

.shared-checklist li.task-list-item {
  margin: 0.5rem 0;
  padding: 0.72rem 0.8rem 0.65rem 2.4rem;
  background: var(--hub-surface);
  border: 1px solid var(--hub-line);
  transition: opacity 140ms ease, background 140ms ease;
}

.shared-checklist li.task-list-item .task-list-control {
  margin-left: -1.7rem;
}

.shared-checklist li.task-list-item.is-complete {
  opacity: 0.62;
  background: color-mix(in srgb, var(--hub-surface) 88%, var(--hub-teal-soft));
}

.shared-checklist li.task-list-item.is-complete .task-main {
  text-decoration: line-through;
  text-decoration-thickness: 1px;
}

.shared-checklist .task-key {
  display: inline-block;
  min-width: 4.7rem;
  margin-right: 0.35rem;
  padding: 0.08rem 0.35rem;
  color: var(--hub-teal-dark);
  font-size: 0.62rem;
  font-weight: 850;
  line-height: 1.35;
  text-align: center;
  background: var(--hub-teal-soft);
  border-radius: 0.14rem;
  vertical-align: 0.08rem;
}

.shared-checklist__editor {
  display: grid;
  grid-template-columns: minmax(9rem, 0.7fr) minmax(14rem, 1.8fr) auto;
  gap: 0.45rem 0.65rem;
  align-items: end;
  margin-top: 0.55rem;
}

.shared-checklist__editor label {
  color: var(--hub-muted);
  font-size: 0.65rem;
  font-weight: 700;
}

.shared-checklist__editor input {
  display: block;
  width: 100%;
  margin-top: 0.16rem;
  padding: 0.28rem 0.42rem;
  color: var(--hub-ink);
  font: inherit;
  font-weight: 400;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--hub-line);
  border-radius: 0;
}

.shared-checklist__editor input:focus {
  outline: 0;
  border-bottom-color: var(--hub-teal);
  box-shadow: 0 1px 0 var(--hub-teal);
}

.shared-checklist__saving {
  min-width: 7rem;
  color: var(--hub-muted);
  font-size: 0.62rem;
}

.shared-checklist.is-read-only .shared-checklist__editor {
  display: none;
}

@media screen and (max-width: 44rem) {
  .shared-checklist__status {
    top: 2.4rem;
  }

  .shared-checklist__editor {
    grid-template-columns: 1fr;
  }
}

[data-md-color-scheme="slate"] .shared-checklist .task-key {
  color: #bfe6dd;
}