:root {
  --bg: #050F1F;
  --deep: #0D1F38;
  --pack: #173357;
  --accent: #4FC7E8;
  --accent2: #73E0FF;
  --text: #D1EDFA;
  --muted: #8CADC7;
  --glass: rgba(255, 255, 255, 0.06);
  --stroke: rgba(255, 255, 255, 0.16);
  --spine: 4.5rem;
  --font: "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --mono: "SF Mono", "Menlo", ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 90% -10%, rgba(79, 199, 232, 0.18), transparent 55%),
    linear-gradient(165deg, var(--bg), var(--deep) 45%, #071525);
  min-height: 100vh;
}

img { max-width: 100%; display: block; height: auto; }
a { color: var(--accent2); text-decoration: none; }
a:hover { color: var(--accent); }

/* —— spine_left —— */
.spine {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--spine);
  z-index: 40;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.25rem 0 1.5rem;
  background: rgba(5, 15, 31, 0.72);
  border-right: 1px solid var(--stroke);
  backdrop-filter: blur(12px);
}
.spine__mark {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 0.7rem;
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--bg);
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  margin-bottom: 2rem;
}
.spine__nav {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
  flex: 1;
  justify-content: center;
}
.spine__nav a {
  position: relative;
  width: 0.7rem;
  height: 0.7rem;
  display: grid;
  place-items: center;
}
.spine__nav a span {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 0 rgba(115, 224, 255, 0.35);
  transition: background 0.2s, box-shadow 0.2s, transform 0.2s;
}
.spine__nav a:hover span,
.spine__nav a.is-active span {
  background: var(--accent2);
  transform: scale(1.25);
  box-shadow: 0 0 0 6px rgba(115, 224, 255, 0.15);
}
.spine__nav a::after {
  content: attr(data-label);
  position: absolute;
  left: 1.4rem;
  white-space: nowrap;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: none;
}
.spine__nav a:hover::after { opacity: 1; transform: translateX(0); }

.dock {
  display: none;
  position: fixed;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%);
  z-index: 40;
  gap: 0.35rem;
  padding: 0.45rem 0.65rem;
  border-radius: 999px;
  background: rgba(5, 15, 31, 0.88);
  border: 1px solid var(--stroke);
  backdrop-filter: blur(14px);
}
.dock a {
  color: var(--muted);
  font-size: 0.72rem;
  padding: 0.4rem 0.65rem;
  border-radius: 999px;
}
.dock a:hover { color: var(--text); background: var(--glass); }

main {
  margin-left: var(--spine);
  max-width: 1100px;
  padding: 0 1.5rem 4rem;
}

/* —— full_bleed_overlay hero —— */
.hero {
  position: relative;
  min-height: min(92vh, 720px);
  margin: 0 -1.5rem 3.5rem;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  border-bottom: 1px solid var(--stroke);
}
.hero__media {
  position: absolute;
  inset: 0;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 15, 31, 0.25) 0%, rgba(5, 15, 31, 0.55) 45%, rgba(5, 15, 31, 0.94) 100%),
    radial-gradient(circle at 70% 30%, rgba(115, 224, 255, 0.2), transparent 45%);
}
.hero__rings {
  position: absolute;
  right: 8%;
  top: 18%;
  width: min(42vw, 320px);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(115, 224, 255, 0.25);
  box-shadow:
    0 0 0 28px rgba(115, 224, 255, 0.05),
    0 0 0 56px rgba(115, 224, 255, 0.03);
  animation: pulse 5.5s ease-in-out infinite;
  pointer-events: none;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.04); opacity: 1; }
}
.hero__copy {
  position: relative;
  z-index: 2;
  padding: 2.5rem 1.5rem 3rem;
  max-width: 36rem;
}
.hero__kicker {
  margin: 0 0 0.6rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent2);
}
.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2.6rem, 7vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
}
.hero__tag {
  margin: 0 0 1.5rem;
  font-size: 1.1rem;
  line-height: 1.45;
  color: var(--muted);
  max-width: 28rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.15rem;
  border-radius: 0.7rem;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s, background 0.15s;
}
.btn:hover { transform: translateY(-1px); }
.btn--ice {
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  color: var(--bg);
}
.btn--ghost {
  border-color: var(--stroke);
  color: var(--text);
  background: var(--glass);
}

.band { padding: 3.25rem 0; }
.band__intro { margin-bottom: 1.75rem; max-width: 34rem; }
.band__intro--left { text-align: left; margin-right: auto; }
.band__intro--right { text-align: right; margin-left: auto; }
.eyebrow {
  margin: 0 0 0.4rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.band h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.6rem, 3.5vw, 2.15rem);
  letter-spacing: -0.02em;
}
.lede { margin: 0; color: var(--muted); line-height: 1.5; }

/* —— stripe_list (signal rows) —— */
.signal-list {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  border-top: 1px solid var(--stroke);
}
.signal-row {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  padding: 1.15rem 0.25rem;
  border-bottom: 1px solid var(--stroke);
  align-items: start;
}
.signal-code {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent2);
  padding-top: 0.2rem;
}
.signal-list h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}
.signal-list p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  font-size: 0.95rem;
}

.vignettes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}
.vignettes figure {
  margin: 0;
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid var(--stroke);
  background: var(--pack);
  aspect-ratio: 1;
}
.vignettes img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* —— mosaic_grid —— */
.mosaic {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 0.75rem;
}
.mosaic figure {
  margin: 0;
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid var(--stroke);
  background: #061224;
}
.mosaic__large {
  grid-row: span 2;
}
.mosaic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}
.mosaic__large img { min-height: 100%; }

.band--legal {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.legal-panel {
  padding: 1.5rem;
  border-radius: 1.1rem;
  background: var(--glass);
  border: 1px solid var(--stroke);
}
.legal-panel h2 { margin: 0 0 0.75rem; font-size: 1.35rem; }
.legal-panel p {
  margin: 0 0 0.75rem;
  color: var(--muted);
  line-height: 1.55;
  font-size: 0.95rem;
}
.legal-panel p:last-child { margin-bottom: 0; }

.foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 2rem 0 5rem;
  border-top: 1px solid var(--stroke);
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 900px) {
  .spine { display: none; }
  .dock { display: flex; }
  main { margin-left: 0; padding-bottom: 6rem; }
  .hero { margin-left: -1.5rem; margin-right: -1.5rem; min-height: 78vh; }
  .mosaic {
    grid-template-columns: 1fr 1fr;
  }
  .mosaic__large { grid-column: span 2; grid-row: auto; }
  .band--legal { grid-template-columns: 1fr; }
  .band__intro--right { text-align: left; margin-left: 0; }
  .vignettes { grid-template-columns: 1fr; }
  .vignettes figure:nth-child(n+2) { display: none; }
}

@media (max-width: 560px) {
  .signal-row { grid-template-columns: 2.4rem 1fr; }
  .mosaic { grid-template-columns: 1fr; }
  .mosaic__large { grid-column: auto; }
}