.nav-dropdown-menu.ecosystem-nav-menu {
  right: 0;
  left: auto;
  display: grid;
  grid-template-columns: minmax(10rem, 0.8fr) minmax(16rem, 1.35fr);
  width: min(36rem, calc(100vw - 2rem));
  min-width: 0;
  padding: 0.72rem;
  gap: 0.7rem;
  transform: none;
}

.nav-dropdown > summary.nav-section-current::after {
  transform: scaleX(1);
}

.toc {
  max-height: calc(100svh - 8.5rem);
  padding-right: 0.55rem;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

@media (min-width: 901px) {
  .nav-dropdown > summary.nav-section-current {
    color: var(--ink);
  }
}

.ecosystem-nav-group {
  min-width: 0;
}

.ecosystem-nav-group + .ecosystem-nav-group {
  padding-left: 0.7rem;
  border-left: 1px solid var(--line);
}

.ecosystem-nav-group > span {
  display: block;
  padding: 0.38rem 0.7rem 0.28rem;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 620;
  letter-spacing: 0.07em;
  line-height: 1.35;
  text-transform: uppercase;
}

.ecosystem-nav-group > ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.ecosystem-nav-group:last-child > ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.nav-dropdown-menu .ecosystem-nav-group a {
  overflow: hidden;
  text-overflow: ellipsis;
}

.ecosystem-group + .ecosystem-group {
  margin-top: clamp(4.5rem, 9vw, 7rem);
}

.ecosystem-group-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(18rem, 1fr);
  align-items: baseline;
  margin-bottom: 1.4rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  gap: 2rem;
}

.ecosystem-group-heading h3,
.ecosystem-group-heading p {
  margin: 0;
}

.ecosystem-group-heading h3 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  letter-spacing: -0.035em;
}

.ecosystem-group-heading p {
  max-width: 62ch;
  color: var(--ink-soft);
}

.ecosystem-card + .ecosystem-card {
  margin-top: 1.1rem;
}

.ecosystem-index {
  margin: 0;
  padding: 0;
  border-block: 1px solid var(--line);
  list-style: none;
}

.ecosystem-index li + li {
  border-top: 1px solid var(--line);
}

.ecosystem-index a {
  display: grid;
  grid-template-columns: minmax(9rem, 0.55fr) minmax(18rem, 1.5fr) auto;
  align-items: center;
  padding: 1.15rem 0.2rem;
  color: inherit;
  text-decoration: none;
  gap: clamp(1rem, 4vw, 3rem);
  transition: background-color 180ms var(--ease-out);
}

.ecosystem-index a:hover {
  background: var(--surface);
}

.ecosystem-index-name {
  font-size: 1.12rem;
  font-weight: 620;
  letter-spacing: -0.025em;
}

.ecosystem-index-description {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.ecosystem-index-action {
  display: inline-flex;
  align-items: center;
  color: var(--violet);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 620;
  white-space: nowrap;
  gap: 0.45rem;
}

.ecosystem-index-action svg {
  width: 1rem;
  transition: transform 180ms var(--ease-out);
}

.ecosystem-index a:hover .ecosystem-index-action svg {
  transform: translateX(0.25rem);
}

@media (max-width: 900px) {
  .toc {
    max-height: none;
    padding-right: 0;
    overflow: visible;
    scrollbar-gutter: auto;
  }

  .nav-dropdown-menu.ecosystem-nav-menu {
    display: block;
    width: auto;
    padding: 0.45rem 0 0.65rem 1rem;
  }

  .ecosystem-nav-group + .ecosystem-nav-group {
    margin-top: 0.45rem;
    padding: 0.45rem 0 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .ecosystem-nav-group > span {
    padding-inline: 0.8rem;
  }

  .ecosystem-group-heading {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }
}

@media (max-width: 640px) {
  .ecosystem-nav-group:last-child > ul {
    grid-template-columns: 1fr;
  }

  .ecosystem-index a {
    grid-template-columns: 1fr auto;
    gap: 0.45rem 1rem;
  }

  .ecosystem-index-description {
    grid-column: 1 / -1;
  }

  .ecosystem-index-action {
    grid-column: 2;
    grid-row: 1;
  }
}

/* Project-level landing and directory surfaces. Runtime-state colors retain
   their existing meanings; dependency classes also use labels and geometry. */

.project-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(31rem, 1.18fr);
  min-height: calc(100svh - 4.75rem);
  align-items: center;
  padding-block: clamp(4.5rem, 9vw, 8rem);
  gap: clamp(3rem, 7vw, 7rem);
}

.project-hero-copy h1 {
  max-width: none;
}

.project-map {
  position: relative;
  margin: 0;
  overflow: hidden;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--code-line);
  border-radius: var(--radius-lg);
  background: var(--code-bg);
  color: oklch(93% 0.018 270);
  box-shadow: 0 1.7rem 4rem oklch(10% 0.04 270 / 0.2);
}

.project-map-origin {
  position: relative;
  display: flex;
  width: fit-content;
  align-items: center;
  margin-inline: auto;
  padding: 0.7rem 1rem;
  border: 1px solid oklch(60% 0.07 270);
  border-radius: var(--radius-sm);
  gap: 0.65rem;
  font-weight: 620;
}

.project-map-origin::after {
  position: absolute;
  top: 100%;
  left: 50%;
  width: 1px;
  height: 2.5rem;
  background: oklch(55% 0.055 270);
  content: "";
}

.project-map-origin img {
  width: 1.8rem;
  filter: brightness(0) invert(1);
}

.project-map-paths {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 2.5rem;
  padding-top: 2.5rem;
  gap: 0.8rem;
}

.project-map-paths::before {
  position: absolute;
  top: 0;
  right: 25%;
  left: 25%;
  height: 1px;
  background: oklch(55% 0.055 270);
  content: "";
}

.project-map-path {
  position: relative;
  min-width: 0;
  padding: 1.2rem;
  border: 1px solid oklch(42% 0.06 270);
  border-radius: var(--radius-md);
  background: oklch(27% 0.052 270);
}

.project-map-path::before {
  position: absolute;
  bottom: 100%;
  left: 50%;
  width: 1px;
  height: 2.5rem;
  background: oklch(55% 0.055 270);
  content: "";
}

.project-map-path > p {
  margin-bottom: 0.35rem;
  color: oklch(76% 0.035 270);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.project-map-path > strong,
.project-map-path > span {
  display: block;
}

.project-map-path > strong {
  font-size: clamp(1.2rem, 2.3vw, 1.65rem);
  line-height: 1.15;
}

.project-map-path > span {
  margin-top: 0.55rem;
  color: oklch(78% 0.025 270);
  font-size: 0.76rem;
  line-height: 1.5;
}

.project-map-path ul {
  display: flex;
  flex-wrap: wrap;
  margin: 1rem 0 0;
  padding: 0;
  gap: 0.35rem;
  list-style: none;
}

.project-map-path li {
  display: flex;
}

.project-map-path li a {
  padding: 0.28rem 0.48rem;
  border: 1px solid oklch(46% 0.055 270);
  border-radius: 999px;
  color: oklch(86% 0.025 270);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-decoration: none;
  transition: background-color 180ms var(--ease-out),
    border-color 180ms var(--ease-out);
}

.project-map-path li a:hover {
  border-color: oklch(66% 0.06 270);
  background: oklch(100% 0 0 / 0.07);
}

.project-map-runtime {
  border-color: color-mix(in oklch, var(--violet) 62%, oklch(42% 0.06 270));
}

.project-map-standalone {
  border-color: oklch(54% 0.045 270);
}

.project-catalogue {
  padding-block: clamp(6rem, 12vw, 11rem);
}

.project-chapter + .project-chapter {
  margin-top: clamp(4.5rem, 9vw, 7rem);
}

.project-chapter-heading {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  max-width: 54rem;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.project-chapter-heading > span {
  padding-top: 0.3rem;
  color: var(--violet);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.project-chapter-heading h3 {
  margin-bottom: 0.45rem;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
}

.project-chapter-heading p {
  max-width: 66ch;
  margin: 0;
  color: var(--ink-soft);
}

.project-feature-row {
  display: grid;
  grid-template-columns: minmax(10rem, 0.65fr) minmax(20rem, 1.5fr) auto;
  align-items: center;
  padding: clamp(1.5rem, 4vw, 2.4rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink);
  color: var(--inverse);
  gap: clamp(1rem, 4vw, 3rem);
  text-decoration: none;
  transition: transform 200ms var(--ease-out), box-shadow 200ms var(--ease-out);
}

.project-feature-row:hover {
  box-shadow: var(--shadow-low);
  transform: translateY(-2px);
}

.project-row-name {
  font-size: 1.18rem;
  font-weight: 620;
}

.project-row-description {
  color: color-mix(in oklch, var(--inverse) 72%, transparent);
  font-size: 0.9rem;
}

.project-row-action {
  display: inline-flex;
  align-items: center;
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  white-space: nowrap;
  gap: 0.45rem;
}

.project-row-action svg {
  width: 1rem;
}

.project-text-link {
  display: inline-block;
  margin-top: 1.4rem;
  font-size: 0.9rem;
  font-weight: 590;
}

.runtime-spotlight {
  padding-block: clamp(5rem, 10vw, 8rem);
  background: var(--ink);
  color: var(--inverse);
}

.runtime-spotlight-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(28rem, 1.18fr);
  width: var(--page);
  align-items: center;
  margin-inline: auto;
  gap: clamp(3rem, 8vw, 8rem);
}

.runtime-spotlight h2 {
  color: inherit;
}

.runtime-spotlight p:not(.eyebrow) {
  max-width: 52ch;
  color: color-mix(in oklch, var(--inverse) 76%, transparent);
}

.runtime-spotlight .eyebrow,
.runtime-spotlight a {
  color: var(--inverse);
}

.runtime-lanes {
  border-block: 1px solid color-mix(in oklch, var(--path) 34%, transparent);
}

.runtime-lanes > div {
  display: grid;
  grid-template-columns: minmax(8rem, 0.62fr) minmax(13rem, 1fr) auto;
  align-items: baseline;
  padding-block: 1.6rem;
  gap: 1.2rem;
}

.runtime-lanes > div + div {
  border-top: 1px solid color-mix(in oklch, var(--path) 34%, transparent);
}

.runtime-lanes span {
  color: var(--violet);
  font-size: 0.84rem;
  font-weight: 620;
}

.runtime-lanes strong {
  font-size: 1.05rem;
}

.runtime-lanes small {
  color: color-mix(in oklch, var(--inverse) 58%, transparent);
  font-family: var(--font-mono);
  font-size: 0.65rem;
}

.runtime-overview-hero {
  padding-top: clamp(2rem, 5vw, 4rem);
}

.runtime-breadcrumb {
  margin-bottom: 2rem;
}

.runtime-included {
  align-items: start;
}

.runtime-capability-list {
  margin: 0;
  border-top: 1px solid oklch(96% 0.02 285 / 0.25);
}

.runtime-capability-list > div {
  display: grid;
  grid-template-columns: minmax(8rem, 0.55fr) 1fr;
  padding-block: 1.2rem;
  border-bottom: 1px solid oklch(96% 0.02 285 / 0.25);
  gap: 1.2rem;
}

.runtime-capability-list dt {
  font-weight: 620;
}

.runtime-capability-list dd {
  margin: 0;
  color: oklch(93% 0.025 285 / 0.78);
}

.library-hero {
  padding-block: clamp(4rem, 9vw, 8rem) clamp(5rem, 10vw, 9rem);
}

.library-hero .breadcrumb {
  margin-bottom: clamp(3rem, 8vw, 6rem);
}

.library-hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.56fr);
  align-items: end;
  gap: clamp(3rem, 8vw, 7rem);
}

.library-hero-layout h1 {
  max-width: 10ch;
  margin-bottom: 0;
}

.library-hero-layout > p {
  max-width: 52ch;
  margin-bottom: 0.6rem;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.library-dependency-key {
  border-block: 1px solid var(--line);
  background: var(--surface);
}

.library-dependency-key-inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: var(--page);
  margin-inline: auto;
}

.library-dependency-key-inner > div {
  display: grid;
  grid-template-columns: auto 1fr;
  padding: 1.2rem clamp(1rem, 4vw, 2rem);
  gap: 0.1rem 0.8rem;
}

.library-dependency-key-inner > div + div {
  border-left: 1px solid var(--line);
}

.library-dependency-key-inner strong {
  font-size: 0.88rem;
}

.library-dependency-key-inner p {
  grid-column: 2;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.dependency-mark {
  width: 0.7rem;
  height: 0.7rem;
  margin-top: 0.35rem;
  border: 1px solid var(--ink-soft);
  border-radius: 50%;
}

.dependency-mark-runtime {
  border-color: var(--violet);
  background: var(--violet);
}

.dependency-mark-standalone {
  background: transparent;
}

.library-section {
  padding-block: clamp(6rem, 12vw, 10rem);
}

.library-section + .library-section {
  padding-top: 0;
}

.library-section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(20rem, 0.6fr);
  align-items: end;
  margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
  gap: 3rem;
}

.library-section-heading > div {
  display: grid;
  grid-template-columns: 3rem 1fr;
  align-items: start;
  gap: 1rem;
}

.library-section-heading span {
  padding-top: 0.65rem;
  color: var(--violet);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.library-section-heading h2,
.library-section-heading p {
  margin: 0;
}

.library-section-heading p {
  max-width: 54ch;
  color: var(--ink-soft);
}

.library-ledger {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.library-ledger > li {
  display: grid;
  grid-template-columns: 3rem minmax(20rem, 1fr) minmax(10rem, auto);
  padding-block: clamp(1.8rem, 4vw, 2.8rem);
  border-bottom: 1px solid var(--line);
  gap: clamp(1rem, 4vw, 3rem);
}

.library-ledger-index {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.library-kind {
  margin-bottom: 0.4rem;
  color: var(--violet);
  font-size: 0.7rem;
  font-weight: 620;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.library-ledger-main h3 {
  margin-bottom: 0.7rem;
}

.library-ledger-main > p:last-child {
  max-width: 65ch;
  margin: 0;
  color: var(--ink-soft);
}

.library-ledger-meta {
  display: flex;
  min-width: 9rem;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.65rem;
}

.library-ledger-meta a {
  font-size: 0.8rem;
  font-weight: 580;
}

.dependency-label {
  display: inline-flex;
  padding: 0.32rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.62rem;
}

.dependency-label-runtime {
  border-color: color-mix(in oklch, var(--violet) 62%, var(--line));
  color: var(--violet-deep);
}

.library-adoption {
  display: grid;
  grid-template-columns: minmax(0, 0.68fr) minmax(24rem, 1fr);
  align-items: center;
  padding-block: clamp(2rem, 6vw, 5rem) clamp(6rem, 12vw, 10rem);
  gap: clamp(2rem, 6vw, 5rem);
}

.library-adoption > p {
  grid-column: 2;
  max-width: 60ch;
  margin-top: -1.2rem;
  color: var(--ink-soft);
}

@media (max-width: 1000px) {
  .project-hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .project-hero-copy {
    max-width: 48rem;
  }

  .runtime-spotlight-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .project-map-paths,
  .library-dependency-key-inner,
  .library-hero-layout,
  .library-section-heading,
  .library-adoption {
    grid-template-columns: 1fr;
  }

  .project-map-origin::after,
  .project-map-paths::before,
  .project-map-path::before {
    display: none;
  }

  .project-map-paths {
    margin-top: 1rem;
    padding-top: 0;
  }

  .project-feature-row,
  .library-ledger > li {
    grid-template-columns: 1fr;
  }

  .project-row-action {
    justify-self: start;
  }

  .runtime-lanes > div,
  .runtime-capability-list > div {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .library-dependency-key-inner > div {
    padding-inline: 0;
  }

  .library-dependency-key-inner > div + div {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .library-adoption > p {
    grid-column: 1;
    margin-top: 0;
  }
}