.features-page {
  --features-section-space: 5rem;
  overflow: clip;
}

.features-page .section {
  padding-block: var(--features-section-space);
}

.features-page .panel,
.features-page .panel-carbon {
  position: relative;
}

.features-page .panel-carbon::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background: linear-gradient(90deg, rgba(6, 182, 212, 0.08) 1px, transparent 1px);
  background-size: 96px 100%;
  opacity: 0.38;
}

.features-page .panel-carbon > * {
  position: relative;
  z-index: 1;
}

.features-hero__grid {
  display: grid;
  grid-template-columns: minmax(22.5rem, 5fr) minmax(30rem, 7fr);
  gap: 2rem;
  align-items: end;
}

.features-hero__rail,
.features-hero__evidence,
.features-loop__intro,
.features-pillars__intro,
.features-checklist__intro,
.features-reserve__copy,
.features-situations__intro,
.features-paths__intro,
.features-summary__essay,
.features-download__copy {
  min-width: 0;
}

.features-hero__rail {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
}

.features-hero__rail > * {
  margin: 0;
}

.features-hero__rail h1 {
  max-width: 12ch;
}

.features-hero__lead {
  max-width: 45ch;
  color: var(--color-muted);
  font-size: var(--font-size-body-large);
}

.features-hero__score {
  max-width: 30ch;
}

.features-hero__score p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.875rem;
  line-height: 1.55;
}

.features-hero__actions {
  display: flex;
  width: 100%;
  min-width: 0;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
}

.features-play-icon {
  width: 0;
  height: 0;
  border-top: 0.5rem solid transparent;
  border-bottom: 0.5rem solid transparent;
  border-left: 0.75rem solid currentColor;
}

.features-anchor-link {
  color: var(--color-paper);
  text-decoration: none;
}

.features-anchor-link::after,
.features-path-card b::after {
  display: block;
  width: 0;
  height: 1px;
  margin-top: 0.25rem;
  background: var(--color-cyan);
  content: "";
  transition: width var(--transition-fast);
}

.features-anchor-link:hover::after,
.features-anchor-link:focus-visible::after,
.features-path-card:hover b::after,
.features-path-card:focus-visible b::after {
  width: 100%;
}

.features-hero__evidence {
  width: 100%;
  margin: 0;
  border-bottom: 2px solid var(--color-cyan);
}

.features-hero__evidence img {
  width: 100%;
  min-height: 30rem;
  object-fit: contain;
  background: var(--color-basalt);
}

.features-hero__evidence figcaption,
.features-rhythm-figure figcaption,
.features-reserve__figure figcaption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0.75rem 1rem;
  border-top: var(--border-default);
}

.features-loop__intro,
.features-pillars__intro,
.features-checklist__intro,
.features-situations__intro,
.features-paths__intro {
  max-width: 43rem;
}

.features-loop__intro { margin-left: 8.333%; }
.features-checklist__intro { margin-left: 8.333%; }
.features-situations__intro { margin-left: 8.333%; }

.features-loop__cards {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 5fr) minmax(0, 3fr);
  gap: 2rem;
  margin-top: 2rem;
}

.features-stage,
.features-pillar,
.features-check-row,
.features-pressure-card,
.features-path-card,
.features-situation,
.features-summary__note,
.features-download__panel {
  min-width: 0;
}

.features-stage {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  align-items: stretch;
  gap: 1rem;
}

.features-stage > * { margin: 0; }
.features-stage h3 { margin-top: auto; }

.features-stage__top {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.features-stage__number,
.features-check-row__number,
.features-path-card > span {
  color: var(--color-cyan);
  font-family: var(--font-heading);
  font-size: 1.65rem;
  font-weight: var(--font-weight-display);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.features-grid-diagram,
.features-corner-diagram,
.features-gap-diagram {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: 100%;
  max-width: 15rem;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--color-border);
}

.features-grid-diagram i,
.features-corner-diagram i,
.features-gap-diagram i {
  min-width: 0;
  border: 1px solid rgba(63, 63, 70, 0.75);
  background: var(--color-elevated);
}

.features-grid-diagram .is-cyan { background: var(--color-cyan); }
.features-corner-diagram .is-magenta,
.features-gap-diagram .is-magenta { background: var(--color-magenta); }

.features-contrast-diagram {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.features-contrast-diagram > div {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.5rem;
}

.features-contrast-diagram b {
  color: var(--color-muted);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-label);
}

.features-block-row {
  display: block;
  width: 100%;
  height: 3rem;
  border: 1px solid var(--color-border);
}

.features-block-row--safe {
  background: linear-gradient(90deg, var(--color-cyan) 0 36%, var(--color-elevated) 36% 65%, var(--color-cyan) 65% 82%, var(--color-elevated) 82%);
}

.features-block-row--tight {
  background: linear-gradient(90deg, var(--color-magenta) 0 43%, var(--color-elevated) 43% 49%, var(--color-magenta) 49% 85%, var(--color-elevated) 85%);
}

.features-control-list {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  color: var(--color-muted);
  font-size: 0.875rem;
}

.features-control-list li { padding-left: 0.75rem; border-left: 1px solid var(--color-cyan); }

.features-pillars__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.features-pillar--space { grid-column: 1 / span 3; }
.features-pillar--edge { grid-column: 5 / span 3; }
.features-pillar--rhythm { grid-column: 1 / span 7; }
.features-pillar--flex { grid-column: 9 / span 4; }

.features-pillar {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 1rem;
}

.features-pillar > * { margin: 0; }
.features-rail { width: 2px; height: 3rem; }
.features-rail--cyan { background: var(--color-cyan); }
.features-corner-diagram { margin-left: auto; }

.features-pillar--rhythm {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 0.9fr);
  align-items: start;
  gap: 1.5rem;
}

.features-rhythm-figure { width: 100%; margin: 0; }
.features-rhythm-figure img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.features-rhythm-copy { min-width: 0; }
.features-rhythm-copy > *:last-child { margin-bottom: 0; }

.features-rule-list {
  display: grid;
  gap: 0.5rem;
  margin: auto 0 0;
  padding: 0;
}

.features-rule-list li {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.5rem;
  align-items: baseline;
}

.features-rule-list span { color: var(--color-cyan); font-weight: var(--font-weight-semibold); }

.features-checklist__panel { margin-top: 2rem; padding: 0; }
.features-check-row {
  display: grid;
  grid-template-columns: minmax(2.5rem, 1fr) minmax(0, 7fr) minmax(8rem, 3fr);
  gap: 1.5rem;
  align-items: center;
  padding: 1.5rem;
  border-bottom: var(--border-default);
}
.features-check-row:last-child { border-bottom: 0; }
.features-check-row:hover { box-shadow: inset 2px 0 0 var(--color-cyan); }
.features-check-row__number--magenta { color: var(--color-magenta); }
.features-check-row__copy > *:last-child { margin-bottom: 0; }
.features-check-row__copy h3 { margin-bottom: 0.5rem; }
.features-check-row > .tag { justify-self: end; }
.features-gap-diagram { justify-self: end; max-width: 7rem; }
.features-split-label { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); justify-self: end; width: 100%; max-width: 9rem; }
.features-split-label b { padding: 0.4rem; color: var(--color-basalt); background: var(--color-cyan); font-size: 0.6875rem; letter-spacing: 0.08em; text-align: center; text-transform: uppercase; }
.features-split-label b:last-child { color: var(--color-paper); background: var(--color-magenta); }

.features-reserve__grid {
  display: grid;
  grid-template-columns: minmax(32.5rem, 7fr) minmax(20rem, 4fr);
  gap: 2rem;
  align-items: start;
}
.features-reserve__visual { min-width: 0; }
.features-reserve__figure { width: 100%; margin: 0; border-bottom: 2px solid var(--color-cyan); }
.features-reserve__figure img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.features-reserve__copy { max-width: 30rem; }
.features-reserve__copy blockquote { margin-bottom: 0; }
.features-pressure-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 1rem; }
.features-pressure-card { display: flex; flex-direction: column; gap: 0.75rem; padding: 1rem; }
.features-pressure-card > * { margin: 0; }
.features-pressure-card > span { color: var(--color-magenta); font-family: var(--font-heading); font-size: 1.5rem; font-weight: var(--font-weight-display); }
.features-pressure-card h3 { font-size: 1rem; }
.features-pressure-card p { color: var(--color-muted); font-size: 0.875rem; }
.features-pressure-card:hover { box-shadow: inset 2px 0 0 var(--color-magenta); }

.features-situations__list { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 1.5rem 2rem; margin-top: 2rem; }
.features-situation { grid-column: 1 / span 7; margin: 0; }
.features-situation:nth-child(2) { grid-column: 8 / span 5; }
.features-situation:nth-child(3) { grid-column: 1 / span 5; }
.features-situation:nth-child(4) { grid-column: 6 / span 7; }
.features-situation summary { display: grid; grid-template-columns: 2rem minmax(0, 1fr); gap: 0.25rem 0.75rem; padding: 1.25rem 1.5rem; list-style: none; }
.features-situation summary::-webkit-details-marker { display: none; }
.features-situation summary > span { grid-row: span 2; color: var(--color-cyan); font-family: var(--font-heading); font-weight: var(--font-weight-display); }
.features-situation summary .is-magenta { color: var(--color-magenta); }
.features-situation summary strong { min-width: 0; }
.features-situation summary small { color: var(--color-muted); font-size: 0.8125rem; }
.features-situation summary em { color: var(--color-magenta); font-style: normal; font-weight: var(--font-weight-semibold); }
.features-situation__body { max-width: 62ch; padding: 0 1.5rem 1.5rem 4.25rem; }
.features-situation__body p { margin: 0; color: var(--color-muted); }
.features-situation.is-open { border-top-color: var(--color-cyan); box-shadow: inset 0 2px 0 var(--color-cyan); }

.features-paths__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; margin-top: 2rem; }
.features-path-card { display: flex; min-height: 100%; flex-direction: column; align-items: flex-start; gap: 1rem; color: var(--color-paper); text-decoration: none; }
.features-path-card > * { margin: 0; }
.features-path-card p { color: var(--color-muted); }
.features-path-card b { margin-top: auto; color: var(--color-paper); font-size: 0.875rem; }
.features-path-card--cyan { border-top: 2px solid var(--color-cyan); }
.features-path-card--magenta { margin-top: 3rem; border-top: 2px solid var(--color-magenta); }
.features-path-card--magenta > span { color: var(--color-magenta); }
.features-path-card--split { border-top: 2px solid var(--color-cyan); box-shadow: inset 4px 0 0 var(--color-magenta); }
.features-path-card:hover { color: var(--color-paper); transform: translate(2px, -2px); }

.features-summary__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 7fr) minmax(0, 3fr); gap: 2rem; align-items: start; }
.features-summary__essay { grid-column: 2; max-width: 44rem; }
.features-summary__note { grid-column: 3; margin-top: 7rem; padding: 1.5rem; border-left: 2px solid var(--color-magenta); background: var(--color-magenta-wash); }
.features-summary__note p { margin: 0.5rem 0 0; color: var(--color-paper); font-family: var(--font-heading); font-size: 1.15rem; line-height: 1.35; }

.features-download__panel { display: grid; grid-template-columns: minmax(0, 1fr) minmax(17.5rem, 3fr); gap: 2rem; align-items: end; border-top: 2px solid var(--color-cyan); }
.features-download__copy { grid-column: 1; max-width: 42rem; }
.features-download__copy > *:last-child { margin-bottom: 0; }
.features-download__actions { display: flex; grid-column: 2; min-width: 0; flex-direction: column; align-items: stretch; gap: 0.75rem; }
.features-download__actions .button { width: 100%; min-height: 2.75rem; }

@media (max-width: 75rem) {
  .features-hero__grid { grid-template-columns: minmax(22.5rem, 5fr) minmax(27rem, 7fr); }
}

@media (max-width: 56.25rem) {
  .features-page { --features-section-space: 4rem; }
  .features-hero__grid,
  .features-reserve__grid,
  .features-download__panel { grid-template-columns: minmax(0, 1fr); }
  .features-hero__evidence { grid-row: 1; }
  .features-hero__rail { grid-row: 2; }
  .features-hero__rail h1 { max-width: 16ch; }
  .features-hero__evidence img { min-height: 0; aspect-ratio: 16 / 10; }
  .features-loop__cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .features-stage--place { grid-column: 1 / -1; }
  .features-pillars__grid { grid-template-columns: repeat(8, minmax(0, 1fr)); }
  .features-pillar--space { grid-column: 1 / span 4; }
  .features-pillar--edge { grid-column: 5 / span 4; }
  .features-pillar--rhythm { grid-column: 1 / -1; }
  .features-pillar--flex { grid-column: 1 / -1; }
  .features-check-row { grid-template-columns: minmax(2.5rem, 1fr) minmax(0, 6fr) minmax(7rem, 2fr); }
  .features-reserve__copy { max-width: 42rem; }
  .features-pressure-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .features-pressure-card:last-child { grid-column: 1 / -1; }
  .features-situations__list { grid-template-columns: repeat(8, minmax(0, 1fr)); }
  .features-situation,
  .features-situation:nth-child(2),
  .features-situation:nth-child(3),
  .features-situation:nth-child(4) { grid-column: 1 / -1; }
  .features-paths__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .features-path-card--magenta { margin-top: 0; }
  .features-path-card--split { grid-column: 1 / -1; }
  .features-summary__grid { grid-template-columns: minmax(0, 1fr); }
  .features-summary__essay,
  .features-summary__note { grid-column: 1; }
  .features-summary__note { width: min(100%, 42rem); margin-top: 0; }
  .features-download__copy,
  .features-download__actions { grid-column: 1; }
}

@media (max-width: 40rem) {
  .features-page { --features-section-space: 3.5rem; }
  .features-hero__grid,
  .features-loop__cards,
  .features-pillars__grid,
  .features-reserve__grid,
  .features-pressure-grid,
  .features-paths__grid,
  .features-summary__grid,
  .features-download__panel { grid-template-columns: minmax(0, 1fr); }
  .features-hero__rail { gap: 1rem; }
  .features-hero__rail h1 { max-width: none; font-size: clamp(2.35rem, 12vw, 2.8rem); }
  .features-hero__lead,
  .features-hero__score { max-width: none; }
  .features-hero__actions { align-items: stretch; }
  .features-hero__actions .button { width: 100%; }
  .features-hero__evidence { grid-row: 2; }
  .features-hero__rail { grid-row: 1; }
  .features-loop__intro,
  .features-checklist__intro,
  .features-situations__intro { margin-left: 0; }
  .features-loop__cards { gap: 1rem; }
  .features-stage--place { grid-column: 1; }
  .features-stage { padding: 1rem; }
  .features-pillars__grid { gap: 1rem; }
  .features-pillar--space,
  .features-pillar--edge,
  .features-pillar--rhythm,
  .features-pillar--flex { grid-column: 1; }
  .features-pillar { padding: 1rem; }
  .features-pillar--rhythm { display: flex; }
  .features-rhythm-figure { order: 1; }
  .features-rhythm-copy { order: 2; }
  .features-checklist__panel { padding: 0; }
  .features-check-row { grid-template-columns: minmax(0, 1fr); gap: 0.75rem; padding: 1rem; }
  .features-check-row__number { grid-row: 1; }
  .features-check-row__copy { grid-row: 2; }
  .features-check-row > .tag,
  .features-gap-diagram,
  .features-split-label { grid-row: 1; justify-self: end; }
  .features-gap-diagram { width: 4.5rem; }
  .features-reserve__copy { max-width: none; }
  .features-pressure-grid { gap: 1rem; }
  .features-pressure-card:last-child { grid-column: 1; }
  .features-situations__list { grid-template-columns: minmax(0, 1fr); gap: 1rem; }
  .features-situation,
  .features-situation:nth-child(2),
  .features-situation:nth-child(3),
  .features-situation:nth-child(4) { grid-column: 1; }
  .features-situation summary { padding: 1rem; }
  .features-situation__body { padding: 0 1rem 1rem; }
  .features-paths__grid { gap: 1rem; }
  .features-path-card--split { grid-column: 1; }
  .features-path-card { padding: 1rem; }
  .features-summary__essay { max-width: none; }
  .features-summary__note { width: 100%; }
  .features-download__panel { gap: 1.5rem; }
  .features-download__actions .button { min-height: 2.75rem; }
}

@media (max-width: 26.25rem) {
  .features-stage__top,
  .features-hero__evidence figcaption,
  .features-rhythm-figure figcaption,
  .features-reserve__figure figcaption { align-items: flex-start; }
  .features-contrast-diagram { grid-template-columns: minmax(0, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  .features-path-card:hover { transform: none; }
}

.features-page ul { list-style: none !important; }
.nav-toggle { flex-direction: column; }