.features-catalog,
.feature-detail-page {
  padding: 54px 0 var(--section-space);
}

.feature-layout {
  display: grid;
  grid-template-columns: 224px minmax(0, 1fr);
  gap: clamp(38px, 5vw, 72px);
  align-items: start;
}

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

.feature-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 26px);
  max-height: calc(100vh - var(--header-height) - 52px);
  overflow-y: auto;
}

.feature-sidebar-inner {
  padding-right: 18px;
  border-right: 1px solid var(--line);
}

.feature-sidebar-heading {
  display: block;
  margin-bottom: 28px;
  color: var(--muted-strong);
  font-size: 0.86rem;
  font-weight: 700;
}

.feature-sidebar-heading.is-active {
  color: var(--text);
}

.feature-nav-group {
  margin-bottom: 30px;
}

.feature-nav-group h2 {
  margin: 0 0 9px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.feature-nav-group nav {
  display: grid;
  gap: 2px;
}

.feature-nav-link {
  min-height: 36px;
  padding: 7px 9px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.8rem;
  transition:
    color var(--ease),
    background var(--ease);
}

.feature-nav-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.025);
}

.feature-nav-link.is-active {
  color: var(--text);
  background: rgba(102, 217, 200, 0.065);
}

.status-dot {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
}

.status-dot-available {
  background: var(--accent);
  box-shadow: 0 0 8px rgba(102, 217, 200, 0.42);
}

.status-dot-advanced {
  background: var(--blue);
  box-shadow: 0 0 8px rgba(104, 174, 252, 0.4);
}

.status-dot-in_development {
  background: var(--violet);
}

.status-dot-coming_soon {
  background: var(--warm);
}

.feature-local-nav {
  margin: 2px 0 10px 18px;
  padding: 5px 0 5px 12px;
  display: grid;
  gap: 4px;
  border-left: 1px solid var(--line);
}

.feature-local-nav a {
  padding: 3px 0;
  color: var(--muted);
  font-size: 0.71rem;
  line-height: 1.35;
}

.feature-local-nav a:hover {
  color: var(--accent-strong);
}

.catalog-header {
  max-width: 760px;
  margin-bottom: 66px;
}

.catalog-kicker {
  margin-bottom: 12px;
  color: var(--accent-strong);
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.catalog-header h1 {
  margin: 0;
  font-size: clamp(2.1rem, 3.4vw, 3.15rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.catalog-header p {
  max-width: 680px;
  margin: 17px 0 0;
  color: var(--muted-strong);
  font-size: 0.98rem;
  line-height: 1.7;
}

.feature-family {
  padding: 54px 0;
  border-top: 1px solid var(--line);
}

.feature-family:first-of-type {
  padding-top: 0;
  border-top: 0;
}

.feature-family-header,
.feature-detail-header {
  min-height: 210px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.62fr);
  gap: clamp(36px, 6vw, 78px);
  align-items: start;
}

.feature-family-copy {
  max-width: 650px;
}

.feature-family-index {
  margin-bottom: 10px;
  color: var(--accent-strong);
  font-size: 0.67rem;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.feature-family h2 {
  margin: 0;
  font-size: clamp(1.55rem, 2.2vw, 2.05rem);
  line-height: 1.17;
  letter-spacing: -0.035em;
}

.feature-family-copy > p {
  max-width: 620px;
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

.feature-family-media,
.feature-detail-media {
  min-height: 176px;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(12, 23, 34, 0.5);
}

.feature-family-media.is-empty,
.feature-detail-media.is-empty {
  visibility: hidden;
}

.feature-family-media img,
.feature-detail-media img {
  width: 100%;
  height: 176px;
  object-fit: cover;
}

.feature-family-media p,
.feature-detail-media figcaption {
  margin: 0;
  padding: 9px 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.68rem;
}

.feature-card-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.feature-card {
  min-height: 116px;
  padding: 22px 4px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 30px;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.feature-card-title-row {
  display: flex;
  align-items: center;
  gap: 13px;
}

.feature-card h3 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: -0.018em;
}

.feature-card p {
  max-width: 680px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.58;
}

.feature-status {
  width: fit-content;
  padding: 4px 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.61rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.feature-status > span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.feature-status-available {
  color: var(--accent-strong);
  border-color: rgba(102, 217, 200, 0.2);
  background: rgba(102, 217, 200, 0.065);
}

.feature-status-available > span {
  background: var(--accent);
}

.feature-status-advanced {
  color: #9bc8fc;
  border-color: rgba(104, 174, 252, 0.22);
  background: rgba(104, 174, 252, 0.065);
}

.feature-status-advanced > span {
  background: var(--blue);
}

.feature-status-in_development {
  color: #c8b5fb;
  border-color: rgba(168, 137, 247, 0.22);
  background: rgba(168, 137, 247, 0.06);
}

.feature-status-in_development > span {
  background: var(--violet);
}

.feature-status-coming_soon {
  color: var(--warm);
  border-color: rgba(241, 191, 121, 0.22);
  background: rgba(241, 191, 121, 0.055);
}

.feature-status-coming_soon > span {
  background: var(--warm);
}

.feature-card-link {
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 650;
  white-space: nowrap;
}

.feature-card-link span {
  margin-left: 5px;
}

.feature-detail-header {
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line);
}

.feature-back-link {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.75rem;
}

.feature-back-link::before {
  content: "←";
  margin-right: 7px;
}

.feature-detail-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.feature-detail-header h1 {
  margin: 0;
  font-size: clamp(2rem, 3.2vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.feature-detail-copy > p {
  max-width: 680px;
  margin: 17px 0 0;
  color: var(--muted-strong);
  font-size: 0.98rem;
  line-height: 1.7;
}

.feature-detail-sections .feature-section {
  padding: 54px 0;
}

.feature-detail-sections .feature-section-inner {
  max-width: none;
}
.feature-section-anchor {
  scroll-margin-top: calc(var(--header-height) + 28px);
}

@media (max-width: 900px) {
  .feature-layout {
    grid-template-columns: 1fr;
  }

  .feature-sidebar {
    position: static;
    max-height: none;
    overflow: visible;
  }

  .feature-sidebar-inner {
    padding: 0 0 20px;
    display: flex;
    gap: 14px;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .feature-sidebar-heading,
  .feature-nav-group {
    flex: none;
    margin: 0;
  }

  .feature-nav-group h2,
  .feature-local-nav {
    display: none;
  }

  .feature-nav-group nav {
    display: flex;
  }

  .feature-nav-link {
    white-space: nowrap;
  }
}

@media (max-width: 700px) {
  .feature-family-header,
  .feature-detail-header {
    min-height: 0;
    grid-template-columns: 1fr;
  }

  .feature-family-media.is-empty,
  .feature-detail-media.is-empty {
    display: none;
  }

  .feature-card {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .feature-card-link {
    width: fit-content;
  }
}

.feature-status-advanced {
  color: #9bc8fc;
  border-color: rgba(104, 174, 252, 0.22);
  background: rgba(104, 174, 252, 0.065);
}

.feature-status-advanced > span {
  background: var(--blue);
}