.systems-page {
  --cyan: #58d7e1;
  --cyan-bright: #82eef1;
  --cyan-line: rgba(88, 215, 225, .32);
}

.systems-header nav,
.systems-header nav a {
  display: flex;
  align-items: center;
}

.systems-header nav {
  gap: var(--space-4);
}

.systems-header nav a {
  min-block-size: 44px;
  color: var(--paper-dim);
  font-size: .78rem;
  font-weight: 700;
  text-decoration: none;
}

.systems-header nav a:hover {
  color: var(--cyan-bright);
}

.systems-hero,
.systems-proof,
.systems-boundary,
.systems-demo,
.systems-final {
  inline-size: min(100%, var(--content));
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.75rem);
}

.systems-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(24rem, .95fr);
  align-items: center;
  min-block-size: min(47rem, calc(100svh - 4.75rem));
  gap: clamp(2.5rem, 7vw, 7rem);
  padding-block: clamp(3.5rem, 8vw, 7.5rem);
}

.systems-hero h1 {
  max-inline-size: 12ch;
  margin-block-end: var(--space-5);
}

.systems-hero h1 em {
  display: block;
  color: var(--cyan-bright);
  font-style: normal;
}

.systems-lede {
  max-inline-size: 43rem;
  margin-block-end: var(--space-5);
  color: var(--paper-dim);
  font-size: clamp(1.05rem, .98rem + .35vw, 1.27rem);
}

.systems-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.systems-actions .button-primary,
.systems-final .button-primary {
  border-color: var(--cyan);
  background: var(--cyan);
}

.systems-disclosure {
  max-inline-size: 43rem;
  margin: var(--space-4) 0 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .74rem;
  line-height: 1.7;
}

.systems-signal {
  position: relative;
  padding: clamp(1.35rem, 3.5vw, 2.5rem);
  overflow: hidden;
  border: 1px solid var(--cyan-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 85% 7%, rgba(88, 215, 225, .13), transparent 17rem),
    rgba(17, 25, 29, .88);
}

.systems-signal::after {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  opacity: .22;
  background-image:
    linear-gradient(rgba(88, 215, 225, .13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(88, 215, 225, .13) 1px, transparent 1px);
  background-size: 3rem 3rem;
  mask-image: linear-gradient(to bottom right, black, transparent 78%);
}

.systems-signal > p {
  position: relative;
  z-index: 1;
  margin-block-end: var(--space-5);
  color: var(--cyan-bright);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
}

.systems-signal ol {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.systems-signal li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--line);
  background: rgba(13, 12, 10, .65);
}

.systems-signal li > span {
  color: var(--cyan-bright);
  font-family: var(--font-mono);
  font-size: .78rem;
}

.systems-signal li div {
  display: grid;
  gap: .3rem;
}

.systems-signal li strong {
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.systems-signal li small {
  color: var(--muted);
  line-height: 1.55;
}

.systems-signal-status {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0 var(--space-2);
  margin-block-start: var(--space-5);
  color: var(--paper-dim);
  font-family: var(--font-mono);
  font-size: .72rem;
}

.systems-signal-status i {
  grid-row: 1 / span 2;
  inline-size: .58rem;
  block-size: .58rem;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 .28rem rgba(88, 215, 225, .09);
}

.systems-signal-status small {
  color: var(--muted);
  font-size: .66rem;
}

.systems-proof,
.systems-boundary,
.systems-demo,
.systems-final {
  padding-block: var(--space-7);
  border-block-start: 1px solid var(--line);
}

.systems-section-heading {
  max-inline-size: 54rem;
  margin-block-end: var(--space-6);
}

.systems-section-heading > p:last-child {
  color: var(--muted);
}

.systems-proof-grid,
.boundary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.systems-proof-grid article,
.boundary-grid article {
  min-block-size: 18rem;
  padding: clamp(1.2rem, 3vw, 2rem);
  border: 1px solid var(--line);
  background: rgba(23, 21, 18, .72);
}

.systems-proof-grid article > p,
.boundary-grid article > p {
  color: var(--gold-bright);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
}

.systems-proof-grid article > span {
  display: block;
  margin-block-start: var(--space-4);
  color: var(--muted);
}

.systems-proof-grid article:nth-child(2),
.boundary-popcard {
  border-color: var(--cyan-line);
  background: linear-gradient(145deg, rgba(88, 215, 225, .08), transparent 52%), var(--panel);
}

.boundary-grid article {
  min-block-size: 22rem;
}

.boundary-grid h3 {
  min-block-size: 4rem;
}

.boundary-grid ul {
  display: grid;
  gap: var(--space-3);
  margin: var(--space-5) 0 0;
  padding: 0;
  color: var(--paper-dim);
  list-style: none;
}

.boundary-grid li {
  padding-block-start: var(--space-3);
  border-block-start: 1px solid var(--line);
}

.boundary-shared {
  border-color: var(--line-gold) !important;
}

.boundary-popcard > p {
  color: var(--cyan-bright) !important;
}

.systems-demo {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  gap: clamp(2rem, 7vw, 7rem);
}

.systems-demo > div:first-child > p:last-child {
  color: var(--muted);
}

.systems-demo-actions {
  display: grid;
  gap: var(--space-3);
}

.systems-demo-actions a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  min-block-size: 8.5rem;
  align-content: center;
  gap: .3rem var(--space-4);
  padding: var(--space-4);
  border: 1px solid var(--line);
  color: var(--paper);
  text-decoration: none;
}

.systems-demo-actions a:hover {
  border-color: var(--cyan);
}

.systems-demo-actions span {
  grid-row: 1 / span 2;
  color: var(--cyan-bright);
  font-family: var(--font-mono);
  font-size: .72rem;
}

.systems-demo-actions strong {
  font-family: var(--font-display);
  font-size: 1.55rem;
}

.systems-demo-actions small {
  color: var(--muted);
}

.systems-final {
  text-align: center;
}

.systems-final .eyebrow {
  justify-content: center;
}

.systems-final h2,
.systems-final > p:not(.eyebrow) {
  max-inline-size: 51rem;
  margin-inline: auto;
}

.systems-final > p:not(.eyebrow) {
  margin-block-end: var(--space-5);
  color: var(--muted);
}

@media (max-width: 68rem) {
  .systems-hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .systems-hero-copy,
  .systems-signal {
    max-inline-size: 52rem;
  }
}

@media (max-width: 50rem) {
  .systems-proof-grid,
  .boundary-grid,
  .systems-demo {
    grid-template-columns: minmax(0, 1fr);
  }

  .systems-proof-grid article,
  .boundary-grid article {
    min-block-size: 0;
  }

  .boundary-grid h3 {
    min-block-size: 0;
  }
}

@media (max-width: 37.5rem) {
  .systems-header nav a:first-child {
    display: none;
  }

  .systems-hero {
    min-block-size: auto;
    padding-block: 3.25rem 4.5rem;
  }

  .systems-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .systems-actions .button {
    width: 100%;
  }

  .systems-signal {
    padding: 1rem;
  }
}