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

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--ts-body);
  line-height: 1.5;
  font-feature-settings: "ss01", "cv11", "zero";
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
}

body.nav-open,
body.progress-drawer-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  padding: 0;
  background: none;
  border: 0;
  cursor: pointer;
}

:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 2px;
}

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

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

* {
  scrollbar-color: var(--border-strong) transparent;
  scrollbar-width: thin;
}

::-webkit-scrollbar {
  width: 14px;
  height: 14px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
  border-left: 1px solid var(--border-hair);
}

::-webkit-scrollbar-thumb {
  background:
    linear-gradient(90deg, transparent 0, rgba(255, 255, 255, 0.04) 1px, transparent 2px) 0 0 / 2px 100%,
    repeating-linear-gradient(0deg, #2e2e2e 0 2px, #242424 2px 4px);
  border: 1px solid #0d0d0d;
  border-top-color: #3a3a3a;
  border-left-color: #3a3a3a;
  border-right-color: #0b0b0b;
  border-bottom-color: #0b0b0b;
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
  background: repeating-linear-gradient(0deg, #3a3a3a 0 2px, #2a2a2a 2px 4px);
}

.skip-link {
  position: absolute;
  top: -999px;
  left: var(--gutter);
  z-index: var(--z-overlay);
  padding: 10px 14px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
}

.skip-link:focus {
  top: var(--gutter);
}

.wrap {
  width: min(var(--content-wide), calc(100vw - (var(--gutter) * 2)));
  margin: 0 auto;
}

.page-main {
  padding-top: calc(var(--nav-h) + var(--subnav-h));
}

.page-section {
  width: min(var(--content-wide), calc(100vw - (var(--gutter) * 2)));
  margin: 0 auto;
  padding: 32px 0;
}

.display,
.hero-3dw,
.hero-video-label,
.section-title,
.course-title,
.lesson-title,
.lesson-step-heading,
.page-title,
.featured-course-display,
.course-module-heading,
.news-card h3,
.glossary-card h2 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

.hairline {
  font-size: var(--ts-hairline);
  color: var(--text-mute);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.bracket {
  font-size: var(--ts-meta);
  color: var(--text-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-head-left .bracket,
.resource-tile-meta .bracket {
  color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: var(--button-h);
  padding: 0 var(--button-px);
  border: 1px solid var(--border-strong);
  font-size: var(--ts-meta);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.btn:hover {
  background: var(--elevated);
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
}

.btn-ghost:hover {
  background: var(--button-invert-bg);
  border-color: var(--button-invert-bg);
  color: var(--button-invert-ink);
}

.button-row,
.hero-actions,
.course-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.site-shell {
  min-height: 100vh;
}

.site-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-nav);
  background: var(--bg);
}

.nav-primary,
.nav-secondary {
  background: var(--bg);
}

.nav-primary {
  border-bottom: 0;
}

.nav-secondary {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.nav-primary-wrap {
  min-height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.nav-logo-image {
  width: auto;
  height: 28px;
  max-width: min(220px, 42vw);
  object-fit: contain;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 28px;
}

.nav-links a,
.nav-drawer-links a,
.nav-login {
  min-height: var(--nav-h);
  display: inline-flex;
  align-items: center;
  font-size: var(--ts-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  border-bottom: 1px solid transparent;
}

.nav-links a:hover,
.nav-drawer-links a:hover,
.nav-links a[aria-current="page"],
.nav-login[aria-current="page"] {
  color: var(--text);
}

.nav-login:hover {
  background: var(--button-invert-bg);
  border-color: var(--button-invert-bg);
  color: var(--button-invert-ink);
}

.nav-login[aria-current="page"] {
  background: var(--surface-panel);
}

.nav-links a[aria-current="page"] {
  border-bottom-color: var(--accent);
}

.nav-meta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-version {
  display: none;
  color: var(--text-mute);
  font-size: var(--ts-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav-login {
  display: none;
  min-height: var(--button-h);
  padding: 0 var(--button-px);
  border: 1px solid var(--border-strong);
  background: var(--surface-neutral);
  color: var(--text);
  line-height: 1;
}

.nav-hamburger {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  flex: 0 0 auto;
}

.nav-hamburger:hover {
  background: var(--button-invert-bg);
  border-color: var(--button-invert-bg);
}

.nav-hamburger span,
.nav-hamburger span::before,
.nav-hamburger span::after {
  display: block;
  width: 16px;
  height: 1px;
  background: var(--text);
  position: relative;
}

.nav-hamburger:hover span,
.nav-hamburger:hover span::before,
.nav-hamburger:hover span::after {
  background: var(--button-invert-ink);
}

.nav-hamburger span::before,
.nav-hamburger span::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-hamburger span::before {
  top: -5px;
}

.nav-hamburger span::after {
  top: 5px;
}

.nav-secondary-wrap {
  min-height: var(--subnav-h);
  display: grid;
  gap: 0;
}

.nav-crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
}

.nav-crumbs a,
.nav-crumbs span {
  min-height: var(--subnav-h);
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  font-size: var(--ts-meta);
  color: var(--text-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-crumbs [aria-current="page"] {
  background: var(--surface-rail);
  color: var(--text);
}

.crumb-home {
  color: var(--text-mute);
}

.nav-search-shell {
  min-height: var(--subnav-h);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 12px;
  border-top: 1px solid var(--border);
}

.nav-search-label {
  color: var(--text-dim);
  font-size: var(--ts-meta);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-search-input,
.glossary-search,
.newsletter-form input {
  width: 100%;
  min-width: 0;
  min-height: 36px;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--text);
}

.nav-search-input::placeholder,
.glossary-search::placeholder,
.newsletter-form input::placeholder {
  color: var(--text-faint);
}

.nav-drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-drawer) - 1);
  background: rgba(0, 0, 0, 0.65);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.nav-drawer {
  position: fixed;
  top: calc(var(--nav-h) + var(--subnav-h));
  right: 0;
  z-index: var(--z-drawer);
  width: min(300px, 100vw);
  min-height: calc(100vh - var(--nav-h) - var(--subnav-h));
  padding: 20px 24px;
  background: var(--surface);
  border-left: 1px solid var(--border);
  transform: translateX(100%);
  transition: transform var(--transition-base);
}

.nav-drawer-links {
  display: grid;
  gap: 12px;
}

.nav-drawer-links a {
  min-height: 32px;
}

body.nav-open .nav-drawer {
  transform: translateX(0);
}

body.nav-open .nav-drawer-backdrop {
  opacity: 1;
  pointer-events: auto;
}

.hero-panel,
.page-header-panel,
.surface-panel,
.course-module,
.featured-course-card,
.featured-course-curriculum,
.lesson-content-card,
.lesson-progress-column,
.lesson-side-column,
.asset-table-card,
.news-card,
.glossary-card {
  border: 1px solid var(--border);
  background: var(--surface-panel);
}

.home-hero {
  padding-top: 28px;
}

.hero-panel {
  border: 0;
  padding: 28px 32px 32px;
  background: transparent;
}

.page-header-panel-plain {
  border: 0;
  background: transparent;
}

.hero-grid {
  display: grid;
  gap: 28px;
  margin-top: 18px;
  align-items: start;
}

.hero-3dw {
  margin: 0;
  font-size: clamp(84px, 16vw, 220px);
  font-weight: 700;
  line-height: 0.84;
  letter-spacing: -0.06em;
}

.hero-mark,
.hero-video-slot,
.hero-specs {
  min-width: 0;
}

.hero-mark {
  grid-area: mark;
}

.hero-video-slot {
  display: flex;
  grid-area: video;
}

.hero-copy {
  max-width: 34rem;
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.8;
}

.hero-video-frame {
  position: relative;
  flex: 1 1 auto;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--border);
  background: var(--bg);
  overflow: hidden;
}

.hero-video-corners::before,
.hero-video-corners::after {
  content: "";
  position: absolute;
  inset: 14px;
  pointer-events: none;
}

.hero-video-corners::before {
  border-top: 1px solid var(--border-strong);
  border-left: 1px solid var(--border-strong);
  clip-path: polygon(0 0, 24% 0, 24% 1px, 1px 1px, 1px 24%, 0 24%);
}

.hero-video-corners::after {
  border-right: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border-strong);
  clip-path: polygon(76% calc(100% - 1px), 100% calc(100% - 1px), 100% 76%, calc(100% - 1px) 76%, calc(100% - 1px) 100%, 76% 100%);
}

.hero-video-inner {
  height: 100%;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 24px;
}

.hero-video-label {
  font-size: clamp(20px, 3.5vw, 42px);
  font-weight: 700;
  text-transform: uppercase;
}

.hero-video-inner p {
  max-width: 18rem;
  margin: 8px 0 0;
  color: var(--text-dim);
}

.hero-specs {
  display: grid;
  gap: 14px;
  align-content: start;
  grid-area: specs;
}

.hero-spec-row {
  display: grid;
  grid-template-columns: minmax(90px, 120px) 1fr;
  gap: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-hair);
}

.hero-spec-key {
  color: var(--text-mute);
  font-size: var(--ts-meta);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-spec-value {
  color: var(--text);
  font-size: var(--ts-body-l);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.ticker-strip {
  padding: 0 0 32px;
}

.ticker-wrap {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  overflow: hidden;
  border: 1px solid var(--border);
  background: transparent;
}

.ticker-track {
  display: flex;
  width: max-content;
  animation: ticker-scroll 40s linear infinite;
}

.ticker-strip:hover .ticker-track,
.ticker-strip[data-paused="true"] .ticker-track {
  animation-play-state: paused;
}

.ticker-group {
  display: flex;
  align-items: center;
  min-width: max-content;
}

.ticker-item,
.ticker-divider {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  font-size: var(--ts-body-l);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
}

.ticker-divider {
  color: var(--accent);
}

@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.section-stack {
  padding-top: 0;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  padding: 0 0 18px;
  flex-wrap: wrap;
}

.section-head-left {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.section-title {
  margin: 0;
  font-size: clamp(28px, 4vw, 56px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

.section-head-right {
  white-space: nowrap;
}

.section-head-right-bottom {
  align-self: flex-end;
}

.featured-course-grid {
  display: grid;
  gap: 0;
}

.featured-course-card,
.featured-course-curriculum {
  padding: 26px 28px 28px;
}

.featured-course-curriculum {
  border-top: 0;
  padding-inline: 0;
  padding-bottom: 0;
}

.featured-course-card {
  display: grid;
  align-content: start;
  gap: 18px;
  background: transparent;
}

.featured-course-display {
  margin-top: 6px;
  max-width: 100%;
  font-size: clamp(56px, 8.4vw, 118px);
  font-weight: 700;
  line-height: 0.88;
  letter-spacing: -0.055em;
  text-transform: uppercase;
}

.featured-course-copy {
  max-width: 31rem;
  margin: 0;
  color: var(--text-dim);
  font-size: var(--ts-body-l);
  line-height: 1.8;
}

.featured-course-progress-block {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

.featured-course-progress-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.featured-course-progress-percent {
  color: var(--text-dim);
  font-size: var(--ts-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.featured-course-progress-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  color: var(--text-mute);
  font-size: var(--ts-meta);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.featured-course-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.featured-course-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-inline: 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.featured-course-list {
  display: grid;
}

.progress-meter {
  --meter-progress: 0%;
  display: inline-flex;
  align-items: center;
  gap: 1px;
  min-width: 0;
}

.progress-meter-bracket {
  color: var(--text-dim);
  font-size: var(--ts-meta);
  letter-spacing: 0.08em;
}

.progress-meter-track {
  position: relative;
  width: 100%;
  min-width: 92px;
  height: 12px;
  border-inline: 1px solid transparent;
  background:
    radial-gradient(circle, var(--status-track-dot) 0.6px, transparent 0.8px) 0 0 / 3px 3px,
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  overflow: hidden;
}

.progress-meter-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--meter-progress);
  background:
    radial-gradient(circle, rgba(13, 13, 13, 0.2) 0.6px, transparent 0.8px) 0 0 / 3px 3px,
    linear-gradient(180deg, var(--accent) 0%, var(--accent-dim) 100%);
}

.progress-meter-course {
  min-width: min(100%, 186px);
  flex: 1 1 180px;
}

.progress-meter-course .progress-meter-track {
  min-width: 148px;
}

.progress-meter-module {
  min-width: 122px;
}

.progress-meter-module .progress-meter-track {
  min-width: 92px;
}

.module-summary-row {
  min-height: 60px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 0;
  border-bottom: 1px solid var(--border);
  transition: background-color var(--transition-fast);
}

.module-summary-row:hover,
.course-lesson-row:hover {
  background: var(--elevated);
}

.module-summary-main {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-width: 0;
  padding: 0 28px;
}

.module-summary-main .bracket {
  flex: 0 0 auto;
  white-space: nowrap;
  line-height: 1.35;
}

.module-summary-title,
.course-lesson-title {
  font-size: var(--ts-body-l);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.module-summary-title {
  min-width: 0;
  line-height: 1.35;
}

.course-lesson-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.module-summary-meta,
.course-module-progress {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 28px 0 18px;
}

.module-summary-count,
.course-module-count {
  color: var(--text-mute);
  font-size: var(--ts-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.asset-table-grid,
.news-grid,
.simple-grid,
.glossary-grid {
  display: grid;
  gap: 0;
}

.asset-table-grid,
.news-grid {
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.resource-tiles,
.community-grid,
.community-stack,
.about-grid,
.support-grid,
.news-list-page,
.roadmap-stack,
.roadmap-timeline,
.roadmap-modules {
  display: grid;
  gap: 16px;
}

.asset-table-card,
.news-card,
.surface-panel,
.glossary-card {
  padding: 22px;
}

.asset-table-card {
  padding: 0;
  overflow: hidden;
  background: transparent;
  border: 0;
}

.news-card {
  border: 0;
}

.asset-table-grid > .asset-table-card,
.news-grid > .news-card {
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.asset-table-card + .asset-table-card,
.news-card + .news-card,
.surface-panel + .surface-panel,
.glossary-card + .glossary-card {
  border-top: 0;
}

.asset-table-head,
.asset-table-foot,
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.filter-bar {
  display: grid;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  background: var(--surface);
  margin-bottom: 16px;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
}

.filter-label,
.filter-chip,
.filter-count {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border-right: 1px solid var(--border);
  font-size: var(--ts-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.filter-label {
  color: var(--text-mute);
}

.filter-chip {
  color: var(--text-dim);
}

.filter-chip.is-active {
  background: var(--elevated);
  color: var(--accent);
}

.filter-chip:hover {
  background: var(--button-invert-bg);
  color: var(--button-invert-ink);
}

.filter-count {
  color: var(--text-mute);
  padding-left: 0;
  border-right: 0;
}

.assets-page-intro {
  padding-top: 28px;
}

.assets-page-intro .page-title {
  margin-top: 10px;
}

.assets-page-intro .page-copy {
  max-width: 44rem;
}

.assets-page-shell {
  padding-top: 8px;
}

.assets-browser {
  border-top: 1px solid var(--border);
}

.assets-browser .filter-bar {
  display: grid;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  background: transparent;
  margin-bottom: 20px;
}

.assets-browser .filter-group {
  display: flex;
  flex-wrap: wrap;
  min-width: 0;
  height: auto;
  gap: 0;
}

.assets-browser .filter-label,
.assets-browser .filter-chip,
.assets-browser .filter-count {
  min-height: 40px;
  padding: 0 14px;
  border-right: 1px solid var(--border);
}

.assets-browser .filter-label {
  padding-left: 0;
}

.assets-browser .filter-chip.is-active {
  background: transparent;
}

.assets-browser .filter-chip:hover {
  background: var(--button-invert-bg);
  color: var(--button-invert-ink);
}

.assets-browser .filter-count {
  flex: 0 0 auto;
  min-width: 0;
  padding-left: 0;
  padding-right: 0;
  border-right: 0;
}

.asset-table-grid-compact .asset-table-thumb {
  aspect-ratio: 0.88 / 1;
}

.asset-drop-btn {
  width: 100%;
  min-height: var(--button-h);
  padding: 0 var(--button-px);
  border-top: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  font-size: var(--ts-meta);
  letter-spacing: 0.14em;
  text-align: left;
  text-transform: uppercase;
}

.asset-table-thumb {
  aspect-ratio: 1 / 1;
  position: relative;
  display: grid;
  place-items: center;
  margin: 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(circle, rgba(255,255,255,0.08) 0.8px, transparent 1px) 0 0 / 16px 16px,
    linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
}

.asset-table-card:nth-child(3n + 1) .asset-table-thumb {
  background:
    radial-gradient(circle, rgba(255,255,255,0.08) 0.8px, transparent 1px) 0 0 / 16px 16px,
    linear-gradient(180deg, rgba(110, 62, 34, 0.28), rgba(56, 32, 24, 0.32));
}

.asset-table-card:nth-child(3n + 2) .asset-table-thumb {
  background:
    radial-gradient(circle, rgba(255,255,255,0.08) 0.8px, transparent 1px) 0 0 / 16px 16px,
    linear-gradient(180deg, rgba(109, 86, 48, 0.24), rgba(50, 38, 22, 0.3));
}

.asset-table-card:nth-child(3n) .asset-table-thumb {
  background:
    radial-gradient(circle, rgba(255,255,255,0.08) 0.8px, transparent 1px) 0 0 / 16px 16px,
    linear-gradient(180deg, rgba(88, 96, 38, 0.22), rgba(42, 48, 21, 0.3));
}

.asset-table-head,
.asset-table-foot {
  min-height: 40px;
  padding: 0 14px;
}

.asset-table-head {
  font-size: var(--ts-body);
  letter-spacing: 0.04em;
}

.asset-table-title {
  color: var(--text);
}

.asset-table-price {
  color: var(--text-dim);
  font-size: var(--ts-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.asset-table-thumb .hairline {
  color: var(--text-mute);
}

.asset-table-thumb-id {
  position: absolute;
  left: 10px;
  bottom: 8px;
  color: var(--text-dim);
  font-size: var(--ts-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.asset-table-id,
.asset-table-spec {
  color: var(--text-dim);
  font-size: var(--ts-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.asset-table-spec {
  color: #8b8b89;
  text-align: right;
}

.news-card h3,
.surface-panel h2,
.glossary-card h2 {
  margin: 16px 0 12px;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  text-transform: uppercase;
}

.resource-tile,
.community-lead,
.legal-panel,
.roadmap-phase,
.roadmap-module-card {
  border: 1px solid var(--border);
  background: var(--surface);
}

.resource-tiles {
  gap: 0;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.resource-tile {
  min-height: 100%;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: transparent;
}

.resource-tile-head {
  display: grid;
  gap: 16px;
  align-content: start;
  padding: 22px 20px 18px;
}

.resource-tile-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.resource-tile-head h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 56px);
  font-weight: 700;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.resource-tile-scroll {
  min-height: 0;
  max-height: 420px;
  overflow-y: auto;
  display: grid;
}

.resource-tile-row {
  min-height: 74px;
  display: grid;
  grid-template-columns: auto auto minmax(180px, 1fr) minmax(92px, auto);
  grid-template-areas: "id logo main host";
  align-items: start;
  gap: 12px;
  padding: var(--resource-row-pad-y) 20px;
  border-top: 1px solid var(--border-hair);
}

.resource-tile-row:last-child {
  border-bottom: 0;
}

.resource-tile-row:hover {
  background: var(--elevated);
}

.resource-row-id {
  grid-area: id;
  padding-top: 1px;
  white-space: nowrap;
}

.resource-row-main {
  grid-area: main;
  min-width: 0;
  display: grid;
  gap: var(--resource-row-gap);
}

.resource-row-logo {
  grid-area: logo;
  width: var(--resource-logo-size);
  min-height: var(--resource-logo-size);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
  padding: var(--resource-logo-pad);
  border: 1px solid var(--border-strong);
  background: var(--resource-logo-paper);
}

.resource-row-logo img {
  width: calc(var(--resource-logo-size) - (var(--resource-logo-pad) * 2));
  height: calc(var(--resource-logo-size) - (var(--resource-logo-pad) * 2));
  object-fit: contain;
  filter: none;
  opacity: 1;
}

.resource-link-name {
  font-size: 15px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.resource-link-note {
  color: var(--text-mute);
  font-size: var(--ts-body-s);
  line-height: 1.5;
  padding-bottom: var(--resource-row-note-pad-bottom);
}

.resource-row-host {
  grid-area: host;
  color: var(--text-dim);
  font-size: var(--ts-meta);
  letter-spacing: 0.12em;
  text-transform: lowercase;
  white-space: nowrap;
  text-align: right;
}

@media (max-width: 1500px) {
  .resource-tile-row {
    grid-template-columns: auto auto minmax(0, 1fr);
    grid-template-areas:
      "id logo main"
      ". . host";
    row-gap: 4px;
    align-content: start;
  }

  .resource-row-host {
    text-align: left;
    margin-top: 2px;
  }
}

.news-list-page .news-card + .news-card {
  border-top: 0;
}

.roadmap-module-meta {
  margin-top: 16px;
  color: var(--text-mute);
  font-size: var(--ts-meta);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.news-card p,
.surface-panel p,
.page-copy,
.course-lede,
.lesson-subtitle,
.lesson-step-body,
.lesson-glossary-item p,
.lesson-aids-caption,
.glossary-card p {
  color: var(--text-dim);
}

.news-status {
  font-size: var(--ts-meta);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.status-token {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--ts-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.status-token-icon {
  position: relative;
  width: 10px;
  height: 10px;
  border: 1px solid currentColor;
  border-radius: 999px;
}

.status-token-icon::after {
  content: "";
  position: absolute;
  inset: 2px;
  border-radius: inherit;
  background: currentColor;
}

.status-token-live {
  color: var(--status-live-ink);
}

.news-status-shipped {
  color: var(--success);
}

.news-status-in-progress {
  color: var(--accent);
}

.news-status-planned {
  color: var(--text-mute);
}

.news-link {
  display: inline-flex;
  margin-top: 16px;
  color: var(--text);
  border-bottom: 1px dashed var(--border-strong);
}

.course-hero,
.page-header-panel {
  padding-top: 28px;
}

.course-title,
.page-title {
  margin: 12px 0 14px;
  font-size: clamp(64px, 10vw, 148px);
  font-weight: 700;
  line-height: 0.88;
  letter-spacing: -0.05em;
  text-transform: uppercase;
}

.course-lede,
.page-copy {
  max-width: 42rem;
  margin: 0 0 18px;
  font-size: var(--ts-body-l);
  line-height: 1.8;
}

.course-index-shell {
  display: grid;
  gap: 16px;
}

.course-module {
  overflow: hidden;
}

.course-module-head {
  min-height: 54px;
  display: grid;
  gap: 12px;
  align-items: center;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}

.course-module-heading {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  font-size: var(--ts-title-s);
  font-weight: 600;
  text-transform: uppercase;
}

.course-module-id {
  color: var(--accent);
}

.course-lesson-table {
  display: grid;
}

.course-lesson-row {
  min-height: 54px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border-hair);
  transition: background-color var(--transition-fast);
}

.course-lesson-row:last-child {
  border-bottom: 0;
}

.course-lesson-main,
.course-lesson-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  min-width: 0;
}

.course-lesson-meta {
  color: var(--text-mute);
  font-size: var(--ts-meta);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.status-glyph {
  width: 14px;
  color: var(--text-faint);
  text-align: center;
  font-size: 14px;
}

.course-lesson-row.is-completed .status-glyph {
  color: var(--success);
}

.course-lesson-row.is-current .status-glyph {
  color: var(--accent);
}

.course-lesson-row.is-current {
  background: var(--accent-tint);
  box-shadow: inset 2px 0 0 var(--accent);
}

.course-lesson-row.is-completed [data-status-label] {
  color: var(--success);
}

.course-lesson-row.is-current [data-status-label] {
  color: var(--accent);
}

.course-lesson-row.is-available [data-status-label] {
  color: var(--text-mute);
}

.lesson-page {
  background: var(--bg);
}

.lesson-shell {
  padding-top: 24px;
}

.lesson-columns {
  display: grid;
  gap: 16px;
}

.lesson-progress-column,
.lesson-side-column {
  position: relative;
  padding: 0;
  overflow: hidden;
}

.lesson-column-head {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
}

.panel-toggle {
  width: 20px;
  height: 20px;
  position: relative;
}

.panel-toggle::before,
.panel-toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 1px;
  background: var(--text-mute);
  transform: translate(-50%, -50%);
}

.panel-toggle::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.lesson-content-card {
  overflow: hidden;
}

.lesson-breadcrumb {
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.lesson-content {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.lesson-header,
.lesson-step-viewport,
.lesson-step-nav,
.lesson-complete-row,
.lesson-pagination,
.homework-card {
  padding-left: 20px;
  padding-right: 20px;
}

.lesson-header {
  padding-top: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.version-badge {
  min-height: 26px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border: 1px solid var(--border);
  background: var(--elevated);
  color: var(--text-mute);
  font-size: var(--ts-hairline);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.lesson-eyebrow {
  margin-top: 16px;
}

.lesson-title {
  margin: 8px 0 12px;
  font-size: clamp(44px, 6vw, 90px);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.05em;
  text-transform: uppercase;
}

.lesson-subtitle {
  margin: 0;
  max-width: 44rem;
  font-size: var(--ts-body-l);
  line-height: 1.8;
}

.lesson-objectives {
  margin: 18px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.lesson-step-viewport {
  display: grid;
  padding-top: 20px;
  padding-bottom: 20px;
}

.lesson-step-panel {
  display: none;
}

.lesson-step-panel.is-active {
  display: block;
}

.lesson-step-label {
  margin-bottom: 12px;
}

.lesson-step-heading {
  margin: 0 0 18px;
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 600;
  text-transform: uppercase;
}

.lesson-step-body {
  display: grid;
  gap: 16px;
  max-width: var(--content-narrow);
  line-height: 1.8;
}

.lesson-step-body p {
  margin: 0;
}

.shortcut-callout,
.callout,
.vocab-card {
  padding: 16px;
  border: 1px solid var(--border);
  background: var(--elevated);
}

.shortcut-callout {
  border-left: 3px solid var(--border-strong);
}

.shortcut-keys {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

kbd {
  min-height: 24px;
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  font-size: var(--ts-body-s);
}

.callout {
  border-left: 3px solid var(--info);
}

.callout.warning {
  border-left-color: var(--warn);
}

.callout.tip {
  border-left-color: var(--success);
}

.callout-label {
  margin-bottom: 8px;
  font-size: var(--ts-hairline);
  color: var(--text-mute);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.vocab-card a {
  color: var(--info);
  border-bottom: 1px dotted var(--info);
}

.lesson-step-nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--border);
}

.lesson-step-status {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.lesson-step-counter {
  color: var(--text-mute);
  font-size: var(--ts-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.lesson-step-counter strong {
  color: var(--accent);
}

.lesson-step-pips {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.lesson-step-pip {
  width: 18px;
  height: 4px;
  background: var(--border);
}

.lesson-step-pip.is-visited {
  background: var(--text-mute);
}

.lesson-step-pip.is-active {
  background: var(--accent);
}

.lesson-nav-btn {
  min-width: 80px;
}

.homework-card {
  padding-top: 20px;
  padding-bottom: 20px;
  border-top: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  background: var(--surface);
}

.homework-card p {
  margin: 12px 0 16px;
  max-width: 42rem;
}

.lesson-complete-row {
  padding-top: 18px;
  padding-bottom: 18px;
  border-top: 1px solid var(--border);
}

.lesson-pagination {
  min-height: 56px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
  padding-bottom: 18px;
}

.lesson-pagination-link {
  color: var(--text-dim);
  font-size: var(--ts-meta);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lesson-pagination-link:hover {
  color: var(--text);
}

.lesson-pagination-empty {
  color: var(--text-faint);
}

.lesson-mobile-actions {
  display: flex;
  padding-bottom: 12px;
}

.progress-trigger {
  min-height: 36px;
  width: 100%;
  justify-content: space-between;
}

.lesson-tablist {
  display: flex;
  border-bottom: 1px solid var(--border);
}

.lesson-tab {
  flex: 1 1 0;
  min-height: 42px;
  border-right: 1px solid var(--border);
  color: var(--text-dim);
  font-size: var(--ts-meta);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.lesson-tab:last-child {
  border-right: 0;
}

.lesson-tab.is-active {
  background: var(--elevated);
  color: var(--text);
  box-shadow: inset 0 -1px 0 var(--accent);
}

.lesson-tab-panel {
  padding: 16px;
}

.lesson-panel-title {
  margin-bottom: 14px;
}

.lesson-aids-frame {
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  background: var(--elevated);
  overflow: hidden;
}

.lesson-aids-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lesson-aids-placeholder {
  padding: 20px;
  text-align: center;
}

.lesson-aids-placeholder strong {
  display: block;
  margin-bottom: 8px;
  font-size: var(--ts-meta);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.lesson-aids-nav {
  margin-top: 14px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
}

.lesson-aids-btn {
  min-width: 34px;
  min-height: 32px;
  border: 1px solid var(--border);
}

.lesson-aids-btn:hover,
.panel-toggle:hover {
  background: var(--button-invert-bg);
  border-color: var(--button-invert-bg);
  color: var(--button-invert-ink);
}

.lesson-aids-count,
.lesson-file-type,
.lesson-file-size {
  font-size: var(--ts-meta);
  color: var(--text-mute);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.lesson-glossary-list,
.lesson-files-list {
  display: grid;
  gap: 14px;
}

.lesson-glossary-item {
  padding-top: 14px;
  border-top: 1px solid var(--border-hair);
}

.lesson-glossary-item:first-child,
.lesson-file-row:first-child {
  padding-top: 0;
  border-top: 0;
}

.lesson-glossary-item h3 {
  margin: 0 0 8px;
  font-size: var(--ts-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
}

.lesson-file-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--border-hair);
}

.lesson-file-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.glossary-popup {
  position: absolute;
  max-width: 280px;
  padding: 14px;
  border: 1px solid var(--border-strong);
  background: var(--elevated);
  z-index: var(--z-tooltip);
}

.glossary-popup-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-family: var(--font-display);
  font-size: var(--ts-title-s);
  text-transform: uppercase;
}

.glossary-popup-icon {
  width: 22px;
  height: 22px;
}

.glossary-popup p {
  margin: 0 0 10px;
  color: var(--text-dim);
}

.glossary-popup a {
  color: var(--info);
  border-bottom: 1px dotted var(--info);
}

.empty-state {
  color: var(--text-mute);
}

.glossary-search {
  min-height: 48px;
}

.glossary-hero {
  padding-top: 28px;
}

.glossary-hero .page-header-panel {
  display: grid;
  gap: 18px;
}

.glossary-controls-section {
  padding-top: 0;
}

.glossary-toolbar {
  display: grid;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.glossary-search-shell {
  display: grid;
  gap: 8px;
  min-width: 0;
  width: min(920px, 100%);
}

.glossary-search {
  min-height: 56px;
  padding: 0 16px;
  border: 1px solid var(--border);
}

.glossary-count {
  align-self: end;
  color: var(--accent);
}

.glossary-alphabet {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  margin-top: 16px;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.glossary-alphabet a {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  font-size: var(--ts-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.glossary-alphabet a:hover,
.glossary-alphabet a[aria-current="page"] {
  background: var(--button-invert-bg);
  color: var(--button-invert-ink);
}

.glossary-alphabet a.is-empty {
  color: var(--text-faint);
}

.glossary-directory {
  display: grid;
  gap: 22px;
  padding-top: 0;
}

.glossary-letter-group {
  display: grid;
  gap: 12px;
}

.glossary-letter-head {
  min-height: 48px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.glossary-letter {
  font-family: var(--font-display);
  color: var(--accent);
  font-size: var(--ts-title-l);
  font-weight: 700;
  line-height: 1;
  text-transform: uppercase;
}

.glossary-entry-stack {
  display: grid;
  gap: 14px;
}

.glossary-entry {
  display: grid;
  gap: 18px;
  padding: 20px;
  border: 1px solid var(--border);
  background: var(--surface-panel);
  scroll-margin-top: calc(var(--nav-h) + var(--subnav-h) + 18px);
}

.glossary-entry-main {
  min-width: 0;
}

.glossary-entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  justify-content: space-between;
}

.glossary-entry h2 {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-size: var(--ts-title-m);
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
}

.glossary-short,
.glossary-full {
  max-width: 64rem;
  margin: 0;
  color: var(--text-dim);
  line-height: 1.8;
}

.glossary-full {
  margin-top: 12px;
  color: var(--text);
}

.glossary-inline-link {
  color: var(--info);
  border-bottom: 0;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.glossary-chip-row,
.glossary-link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.glossary-chip-row {
  margin-top: 16px;
}

.glossary-chip,
.glossary-link-row a {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: var(--ts-hairline);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.glossary-link-row a:hover {
  background: var(--button-invert-bg);
  border-color: var(--button-invert-bg);
  color: var(--button-invert-ink);
}

.glossary-link-block {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.glossary-media-slot {
  min-height: 160px;
  display: grid;
  align-content: space-between;
  gap: 16px;
  padding: 16px;
  border: 1px dashed var(--border-strong);
  background: var(--elevated);
}

.glossary-media-slot strong {
  color: var(--text-dim);
  font-size: var(--ts-body);
  font-weight: 500;
  line-height: 1.5;
}

.glossary-empty,
.glossary-empty-state {
  padding: 24px;
}

.glossary-empty-state {
  display: grid;
  gap: 14px;
  border: 1px solid var(--border);
  background: var(--surface-panel);
}

.glossary-empty-state h2,
.glossary-empty-state p {
  margin: 0;
}

.glossary-card details summary {
  cursor: pointer;
  color: var(--text);
}

.site-footer {
  margin-top: 40px;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  gap: 0;
}

.footer-column {
  padding: 24px;
  border-bottom: 1px solid var(--border);
}

.footer-column p {
  margin: 14px 0;
  color: var(--text-dim);
}

.footer-links {
  display: grid;
  gap: 10px 24px;
}

.footer-link,
.footer-links a {
  color: var(--text);
  font-size: var(--ts-meta);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.footer-terminal-btn {
  min-height: var(--button-h);
  padding: 0 var(--button-px);
}

.newsletter-form {
  display: grid;
  gap: 12px;
}

.newsletter-form input {
  min-height: var(--button-h);
  padding: 0 var(--button-px);
  border: 1px solid var(--border);
}

.footer-socials {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.footer-bottom {
  min-height: 44px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 0 28px;
  color: var(--text-mute);
  font-size: var(--ts-meta);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.system-status {
  justify-content: flex-end;
}

[data-progress-panel] {
  display: none;
}

.lesson-progress-column[data-mobile-open="true"] {
  display: block;
}

@media (min-width: 768px) {
  .nav-secondary-wrap {
    grid-template-columns: 1fr minmax(280px, 520px);
  }

  .nav-search-shell {
    border-top: 0;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(240px, 0.96fr);
    grid-template-areas:
      "mark specs"
      "video specs";
    align-items: stretch;
  }

  .hero-3dw {
    font-size: clamp(72px, 12vw, 156px);
  }

  .hero-video-frame {
    min-height: 100%;
  }

  .featured-course-grid,
  .course-module-head,
  .asset-table-grid,
  .news-grid,
  .simple-grid,
  .glossary-grid,
  .about-grid,
  .support-grid,
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .community-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
  }

  .footer-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .asset-table-grid-compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .glossary-toolbar {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .glossary-alphabet {
    grid-template-columns: repeat(14, minmax(0, 1fr));
  }

  .glossary-entry {
    grid-template-columns: minmax(0, 1fr) minmax(180px, 240px);
  }

  .featured-course-curriculum {
    border-top: 1px solid var(--border);
  }

  .course-module-head,
  .course-lesson-row {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (max-width: 767px) {
  .nav-primary-wrap {
    gap: 12px;
  }

  .nav-meta {
    gap: 10px;
  }

  .nav-crumbs a,
  .nav-crumbs span {
    padding: 0 10px;
  }

  .nav-search-shell {
    gap: 10px;
    padding: 0 10px;
  }

  .nav-search-label {
    display: none;
  }

  .nav-search-input,
  .glossary-search,
  .newsletter-form input {
    font-size: 16px;
  }

  .lesson-shell {
    padding-top: 16px;
  }

  .lesson-mobile-actions {
    position: sticky;
    top: calc(var(--nav-h) + var(--subnav-h) + 12px);
    z-index: 1;
    padding-bottom: 10px;
  }

  .lesson-breadcrumb,
  .lesson-header,
  .lesson-step-viewport,
  .lesson-step-nav,
  .lesson-complete-row,
  .lesson-pagination,
  .homework-card {
    padding-left: 14px;
    padding-right: 14px;
  }

  .lesson-breadcrumb {
    gap: 6px;
  }

  .lesson-header {
    padding-top: 18px;
    padding-bottom: 16px;
  }

  .badge-row {
    gap: 6px;
  }

  .version-badge {
    min-height: 24px;
    padding: 0 8px;
  }

  .lesson-eyebrow {
    margin-top: 14px;
  }

  .lesson-title {
    margin: 6px 0 10px;
    font-size: clamp(30px, 11vw, 44px);
    line-height: 0.96;
  }

  .lesson-subtitle {
    font-size: 14px;
    line-height: 1.65;
  }

  .lesson-objectives {
    margin-top: 14px;
    gap: 8px;
    padding-left: 16px;
  }

  .lesson-step-viewport {
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .lesson-step-heading {
    margin-bottom: 14px;
    font-size: clamp(22px, 8vw, 30px);
    line-height: 1.05;
  }

  .lesson-step-body {
    gap: 14px;
    line-height: 1.7;
  }

  .lesson-step-nav {
    min-height: auto;
    flex-wrap: wrap;
    align-items: stretch;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .lesson-step-status {
    order: -1;
    width: 100%;
  }

  .lesson-step-pips {
    justify-content: center;
  }

  .lesson-nav-btn {
    flex: 1 1 calc(50% - 6px);
    min-width: 0;
  }

  .homework-card,
  .lesson-complete-row,
  .lesson-pagination {
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .lesson-pagination {
    min-height: auto;
    align-items: flex-start;
  }

  .lesson-pagination-link {
    max-width: 100%;
  }

  .lesson-tab {
    min-height: 40px;
    font-size: 10px;
    letter-spacing: 0.08em;
  }

  .lesson-tab-panel {
    padding: 14px;
  }

  .lesson-aids-nav {
    gap: 8px;
  }
}

@media (min-width: 1200px) {
  .page-section {
    padding: 36px 0;
  }

  .nav-links,
  .nav-version,
  .nav-login {
    display: inline-flex;
  }

  .nav-hamburger,
  .nav-drawer,
  .nav-drawer-backdrop,
  .lesson-mobile-actions {
    display: none;
  }

  .hero-grid {
    grid-template-columns: minmax(320px, 1.15fr) minmax(240px, 0.72fr) minmax(300px, 0.88fr);
    grid-template-areas: "mark video specs";
    align-items: start;
  }

  .hero-3dw {
    font-size: clamp(96px, 14vw, 220px);
  }

  .featured-course-grid {
    grid-template-columns: minmax(320px, 0.8fr) minmax(0, 1.2fr);
  }

  .featured-course-curriculum {
    border-top: 1px solid var(--border);
    border-left: 0;
  }

  .asset-table-grid,
  .news-grid,
  .simple-grid,
  .glossary-grid,
  .about-grid,
  .footer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .asset-table-grid-compact {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .glossary-alphabet {
    grid-template-columns: repeat(27, minmax(0, 1fr));
  }

  .glossary-entry {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
  }

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

  .lesson-columns {
    grid-template-columns: 280px minmax(0, 1fr) 320px;
    align-items: start;
  }

  .lesson-columns:has(.lesson-progress-column.is-collapsed) {
    grid-template-columns: 96px minmax(0, 1fr) 320px;
  }

  .lesson-progress-column,
  .lesson-side-column {
    position: sticky;
    top: calc(var(--nav-h) + var(--subnav-h) + 24px);
  }

  [data-progress-panel] {
    display: block;
  }
}

@media (max-width: 1199px) {
  .lesson-progress-column {
    position: fixed;
    top: calc(var(--nav-h) + var(--subnav-h));
    left: 0;
    bottom: 0;
    z-index: var(--z-overlay);
    width: min(320px, 92vw);
    overflow: auto;
    transform: translateX(-110%);
    transition: transform var(--transition-base);
  }

  .lesson-progress-column[data-mobile-open="true"] {
    transform: translateX(0);
  }

  .lesson-progress-backdrop {
    position: fixed;
    inset: calc(var(--nav-h) + var(--subnav-h)) 0 0;
    z-index: calc(var(--z-overlay) - 1);
    border: 0;
    background: rgba(0, 0, 0, 0.65);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
  }

  body.progress-drawer-open .lesson-progress-backdrop {
    opacity: 1;
    pointer-events: auto;
  }

  .lesson-side-column {
    order: 3;
  }

  .resource-row-host {
    white-space: normal;
    text-align: right;
  }
}

@media (max-width: 767px) {
@media (max-width: 767px) {
  .resource-tile-head {
    padding: 18px 16px 16px;
  }

  .resource-tile-scroll {
    max-height: 320px;
  }

  .resource-tile-row {
    grid-template-columns: auto auto minmax(0, 1fr);
    grid-template-areas: "id logo main";
    padding: var(--resource-row-pad-y) 16px;
  }

  .resource-row-host {
    display: none;
  }
}