.matter-platform-page {
  --mp-line: var(--border);
  --mp-muted: var(--text-secondary);
  --mp-surface: var(--gray-50);
  --mp-accent: #4b4f97;
  --mp-shadow: 0 24px 70px rgba(42, 21, 72, .10);
}

.mp-hero {
  position: relative;
  overflow: hidden;
  padding: 82px 24px 74px;
  border-bottom: 1px solid var(--mp-line);
  background:
    radial-gradient(circle at 82% 18%, rgba(75, 79, 151, .20), transparent 30%),
    radial-gradient(circle at 76% 82%, rgba(87, 133, 173, .14), transparent 26%),
    linear-gradient(180deg, #f1f3fb, var(--white) 88%);
}

.mp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .32;
  background-image:
    linear-gradient(rgba(75, 79, 151, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(75, 79, 151, .08) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to right, transparent 4%, #000 62%, #000);
}

.mp-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 70px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
}

.mp-back {
  display: inline-flex;
  margin-bottom: 24px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.mp-eyebrow,
.matter-foundation-kicker,
.matter-identity-kicker {
  color: var(--violet-medium);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.mp-hero h1 {
  max-width: 760px;
  margin: 16px 0 0;
  font-size: clamp(44px, 5.5vw, 72px);
  line-height: 1;
  letter-spacing: -.05em;
}

.mp-hero-lead {
  max-width: 740px;
  margin: 24px 0 0;
  color: var(--mp-muted);
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.55;
}

.mp-actions,
.matter-foundation-actions,
.matter-identity-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.mp-actions { margin-top: 30px; }

.mp-architecture {
  padding: 24px;
  border: 1px solid rgba(124, 77, 189, .20);
  border-radius: 22px;
  background: rgba(255, 255, 255, .90);
  box-shadow: var(--mp-shadow);
}

.mp-architecture-label {
  margin-bottom: 16px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.mp-architecture-node {
  padding: 12px 14px;
  border: 1px solid var(--mp-line);
  border-radius: 10px;
  background: var(--white);
  text-align: center;
  font-size: 14px;
  font-weight: 760;
}

.mp-architecture-node strong {
  display: block;
  color: var(--violet-medium);
}

.mp-architecture-arrow {
  padding: 5px 0;
  color: var(--violet-medium);
  text-align: center;
  font-weight: 800;
}

.mp-section {
  padding: 84px 24px;
}

.mp-section[id] { scroll-margin-top: 88px; }

.mp-section--muted { background: var(--mp-surface); }
.mp-section--violet { background: var(--violet-wash); }

.mp-section-inner {
  max-width: 1180px;
  margin: 0 auto;
}

.mp-section-header {
  max-width: 760px;
  margin: 0 auto 42px;
  text-align: center;
}

.mp-section-header h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 4vw, 44px);
  letter-spacing: -.035em;
}

.mp-section-header p {
  color: var(--mp-muted);
  font-size: 17px;
  line-height: 1.65;
}

/* Full-width platform rows need the row's available measure. */
.matter-platform-page:not(.genome-physics-page) .mp-section-header {
  max-width: none;
  margin: 0 0 42px;
  text-align: left;
}

.matter-platform-page:not(.genome-physics-page) .mp-section-header h2 {
  max-width: 1100px;
  text-wrap: normal;
}

.matter-platform-page:not(.genome-physics-page) .mp-section-header > p {
  max-width: 820px;
}

.mp-layer-grid,
.mp-interface-grid,
.mp-trust-grid {
  display: grid;
  gap: 18px;
}

.mp-layer-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.mp-interface-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.mp-trust-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.mp-card {
  padding: 24px;
  border: 1px solid var(--mp-line);
  border-radius: 16px;
  background: var(--white);
  box-shadow: 0 12px 34px rgba(42, 21, 72, .06);
}

.mp-card-number {
  display: grid;
  width: 34px;
  height: 34px;
  margin-bottom: 18px;
  place-items: center;
  border-radius: 50%;
  background: var(--violet-wash);
  color: var(--violet-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.mp-card h3 { margin-bottom: 10px; font-size: 19px; }
.mp-card p { margin: 0; color: var(--mp-muted); font-size: 15px; line-height: 1.6; }
.mp-card a { display: inline-block; margin-top: 16px; font-weight: 750; }

.mp-status {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--violet-wash);
  color: var(--violet-dark);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.mp-status--frontier { background: var(--gray-100); color: var(--text-secondary); }

.mp-stack {
  display: grid;
  max-width: 860px;
  margin: 0 auto;
  border: 1px solid var(--mp-line);
  border-radius: 18px;
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--mp-shadow);
}

.mp-stack-row {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 22px;
  padding: 17px 22px;
  border-bottom: 1px solid var(--mp-line);
}

.mp-stack-row:last-child { border-bottom: 0; }
.mp-stack-row strong { color: var(--violet-deep); }
.mp-stack-row span { color: var(--mp-muted); }

.mp-loop {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 16px;
  align-items: center;
  max-width: 940px;
  margin: 0 auto;
}

.mp-loop-node {
  min-height: 156px;
  padding: 25px;
  border: 1px solid var(--mp-line);
  border-radius: 16px;
  background: var(--white);
  text-align: center;
}

.mp-loop-node strong { display: block; margin-bottom: 9px; font-size: 19px; }
.mp-loop-node span { color: var(--mp-muted); font-size: 14px; line-height: 1.55; }
.mp-loop-arrow { color: var(--violet-medium); font-size: 24px; font-weight: 800; }

.mp-ladder {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.mp-ladder span {
  padding: 10px 13px;
  border: 1px solid var(--mp-line);
  border-radius: 999px;
  background: var(--white);
  font-size: 13px;
  font-weight: 730;
}

.mp-ladder .mp-ladder-next {
  border-color: var(--violet-light);
  background: var(--violet-wash);
  color: var(--violet-dark);
}

.mp-final {
  padding: 78px 24px;
  background:
    radial-gradient(circle at 84% 18%, rgba(167, 139, 250, .34), transparent 30%),
    linear-gradient(130deg, var(--violet-deep), var(--violet-dark) 70%, var(--violet-medium));
  color: var(--white);
  text-align: center;
}

.mp-final h2 { color: var(--white); font-size: clamp(32px, 4vw, 48px); }
.mp-final p { max-width: 680px; margin: 14px auto 28px; color: var(--violet-lightest); font-size: 18px; }
.mp-final .mp-actions { justify-content: center; }

.matter-foundation-home {
  background:
    radial-gradient(circle at 88% 18%, rgba(124, 77, 189, .16), transparent 30%),
    linear-gradient(180deg, var(--white), var(--violet-wash));
}

.matter-foundation-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 410px;
  gap: 64px;
  align-items: center;
}

.matter-foundation-copy h2 {
  max-width: 680px;
  margin: 14px 0 18px;
  font-size: clamp(32px, 4vw, 48px);
  letter-spacing: -.04em;
  scroll-margin-top: 96px;
}

.matter-foundation-copy > p {
  max-width: 720px;
  color: var(--mp-muted);
  font-size: 17px;
  line-height: 1.65;
}

.matter-foundation-actions { margin-top: 24px; }

.matter-foundation-map {
  padding: 22px;
  border: 1px solid rgba(124, 77, 189, .18);
  border-radius: 18px;
  background: rgba(255, 255, 255, .90);
  box-shadow: var(--mp-shadow);
}

.matter-foundation-map-row {
  padding: 10px 12px;
  border: 1px solid var(--mp-line);
  border-radius: 9px;
  background: var(--white);
  text-align: center;
  font-size: 13px;
  font-weight: 760;
}

.matter-foundation-map-arrow { padding: 4px 0; color: var(--violet-medium); text-align: center; }

.matter-identity-strip {
  border-bottom: 1px solid var(--mp-line);
  background: var(--violet-wash);
}

.matter-identity-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding-top: 24px;
  padding-bottom: 24px;
}

.matter-identity-copy p {
  margin: 5px 0 0;
  color: var(--mp-muted);
  font-size: 15px;
}

.matter-identity-links a { font-size: 14px; font-weight: 750; white-space: nowrap; }

@media (max-width: 980px) {
  .mp-hero-inner,
  .matter-foundation-grid { grid-template-columns: 1fr; gap: 40px; }
  .mp-architecture { max-width: 560px; }
  .mp-layer-grid,
  .mp-interface-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 700px) {
  .mp-hero { padding: 54px 18px 56px; }
  .mp-hero h1 { font-size: 43px; }
  .mp-section { padding: 60px 18px; }
  .mp-layer-grid,
  .mp-interface-grid,
  .mp-trust-grid { grid-template-columns: 1fr; }
  .mp-stack-row { grid-template-columns: 1fr; gap: 5px; }
  .mp-loop { grid-template-columns: 1fr; }
  .mp-loop-node { min-height: 0; }
  .mp-loop-arrow { transform: rotate(90deg); text-align: center; }
  .matter-foundation-grid { gap: 30px; }
  .matter-identity-inner { grid-template-columns: 1fr; gap: 15px; }
}

@media (prefers-reduced-motion: reduce) {
  .matter-platform-page *,
  .matter-foundation-home *,
  .matter-identity-strip * { scroll-behavior: auto !important; }
}

@media print {
  .mp-hero,
  .mp-section,
  .mp-final { padding: 28px 0; }
  .mp-hero::before { display: none; }
  .mp-card,
  .mp-stack,
  .mp-architecture { box-shadow: none; break-inside: avoid; }
}