:root {
  --bg: #0a0f18;
  --accent: #22d3ee;
  --accent2: #f97316;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --spine-w: 11rem;
  --radius: 14px;
  --max: 68rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--bg);
  padding: 0.5rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.spine-nav {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--spine-w);
  padding: 1.5rem 1rem;
  border-right: 1px solid rgba(34, 211, 238, 0.22);
  background: rgba(10, 15, 24, 0.92);
  backdrop-filter: blur(8px);
  z-index: 20;
}

.spine-brand {
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.spine-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.spine-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.92rem;
  transition: color 0.15s ease;
}

.spine-links a:hover,
.spine-links a:focus-visible {
  color: var(--accent);
}

.page-shell {
  margin-left: var(--spine-w);
  min-height: 100vh;
}

.hero-full-bleed {
  position: relative;
  min-height: min(72vh, 42rem);
  display: grid;
  align-items: end;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: relative;
  z-index: 1;
  padding: clamp(2rem, 6vw, 4rem) clamp(1.25rem, 4vw, 3rem) 3rem;
  background: linear-gradient(180deg, rgba(10, 15, 24, 0.15) 0%, rgba(10, 15, 24, 0.88) 55%, var(--bg) 100%);
  max-width: var(--max);
}

.hero-kicker {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.75rem;
  color: var(--accent2);
  margin: 0 0 0.5rem;
}

.hero-full-bleed h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.08;
  max-width: 16ch;
}

.hero-full-bleed h1 span {
  color: var(--accent);
}

.hero-tagline {
  margin: 0;
  max-width: 42ch;
  color: var(--muted);
  font-size: 1.05rem;
}

main {
  padding: 0 clamp(1.25rem, 4vw, 3rem) 3rem;
}

.section-intro.centered-band {
  text-align: center;
  max-width: 40rem;
  margin: 0 auto 2.5rem;
}

.section-intro h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
}

.section-intro p {
  margin: 0;
  color: var(--muted);
}

.features-zigzag {
  padding: 3.5rem 0 2rem;
  max-width: var(--max);
  margin: 0 auto;
}

.zigzag-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: center;
  margin-bottom: 2.75rem;
}

.zigzag-row.reverse figure {
  order: 2;
}

.zigzag-row.reverse .zigzag-copy {
  order: 1;
}

.zigzag-row figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(34, 211, 238, 0.25);
}

.zigzag-copy h3 {
  margin: 0 0 0.5rem;
  color: var(--accent);
}

.zigzag-copy p {
  margin: 0;
  color: var(--muted);
}

.screens-mosaic {
  padding: 2.5rem 0 3rem;
  max-width: var(--max);
  margin: 0 auto;
}

.mosaic-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  grid-template-rows: auto auto;
  gap: 1rem;
}

.mosaic-large {
  grid-row: span 2;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(249, 115, 22, 0.35);
  background: rgba(255, 255, 255, 0.03);
}

.mosaic-small {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(34, 211, 238, 0.25);
  background: rgba(255, 255, 255, 0.03);
}

.mosaic-grid figcaption {
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.legal-inline {
  max-width: var(--max);
  margin: 0 auto;
  padding-bottom: 2rem;
}

.legal-block {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}

.legal-block h3 {
  margin: 0 0 0.5rem;
}

.legal-summary {
  margin: 0 0 1rem;
  color: var(--muted);
}

.legal-toggle {
  appearance: none;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
}

.legal-toggle:hover,
.legal-toggle:focus-visible {
  background: rgba(34, 211, 238, 0.12);
}

.legal-details {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
}

.legal-details h4 {
  margin: 1.25rem 0 0.35rem;
  color: var(--text);
}

.legal-details ul {
  margin: 0.25rem 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.site-footer {
  margin-left: var(--spine-w);
  padding: 1.5rem clamp(1.25rem, 4vw, 3rem) 2.5rem;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  :root {
    --spine-w: 0;
  }

  .spine-nav {
    position: static;
    width: 100%;
    border-right: none;
    border-bottom: 1px solid rgba(34, 211, 238, 0.22);
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
  }

  .spine-brand {
    margin: 0;
  }

  .spine-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.75rem 1rem;
  }

  .page-shell,
  .site-footer {
    margin-left: 0;
  }

  .zigzag-row,
  .zigzag-row.reverse {
    grid-template-columns: 1fr;
  }

  .zigzag-row.reverse figure,
  .zigzag-row.reverse .zigzag-copy {
    order: unset;
  }

  .mosaic-grid {
    grid-template-columns: 1fr;
  }

  .mosaic-large {
    grid-row: auto;
  }
}