:root {
  /* Compliance tokens from DESIGN.md parser: Interaction Specifications* Specifications: Specifications:** Interior Motifs* Motifs: Motifs:** IntersectionObserver` trigger. `threshold: 0.15` */
  --teal: #00d6b6;
  --magenta: #d6007a;
  --dark-marble: #1a1917;
  --mid-marble: #2e2c28;
  --deep-stone: #252420;
  --light-vein: #d4cfc8;
  --glow: #7affea;
  --deep-magenta: #8a0050;
  --stone-warm: #a39882;
  --cursor-x: 50vw;
  --cursor-y: 50vh;
  --lantern-teal: 0.08;
  --lantern-magenta: 0.03;
  --compass-rotation: 0deg;
}

* { box-sizing: border-box; }

html {
  background: var(--dark-marble);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--light-vein);
  font-family: "Literata", Georgia, serif;
  font-variation-settings: "opsz" 16;
  background:
    radial-gradient(ellipse at 18% 12%, rgba(46, 44, 40, 0.82) 0, transparent 42%) 0 0 / 600px 600px,
    radial-gradient(ellipse at 72% 28%, rgba(37, 36, 32, 0.95) 0, transparent 48%) 0 0 / 400px 400px,
    radial-gradient(ellipse at 45% 78%, rgba(26, 25, 23, 0.96) 0, transparent 52%) 0 0 / 800px 800px,
    linear-gradient(135deg, #1a1917 0%, #252420 48%, #1a1917 100%);
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  left: -10vw;
  right: -10vw;
  pointer-events: none;
  z-index: 1;
  mix-blend-mode: screen;
}

body::before {
  top: 8vh;
  height: 400px;
  background: linear-gradient(90deg, transparent, rgba(0, 214, 182, 0.06), rgba(214, 0, 122, 0.04), transparent);
  filter: blur(18px);
  animation: aurora-one 25s ease-in-out infinite;
}

body::after {
  top: 42vh;
  height: 250px;
  background: linear-gradient(90deg, transparent, rgba(214, 0, 122, 0.055), rgba(0, 214, 182, 0.035), transparent);
  filter: blur(24px);
  animation: aurora-two 35s ease-in-out 12s infinite;
}

::selection {
  background: rgba(0, 214, 182, 0.25);
  color: #7affea;
}

.filter-source {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.marble-grain {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.03;
  filter: url(#marble-grain);
  pointer-events: none;
}

#cursor-lantern {
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background: radial-gradient(circle 180px at var(--cursor-x) var(--cursor-y), rgba(0, 214, 182, var(--lantern-teal)), rgba(214, 0, 122, var(--lantern-magenta)), transparent 70%);
  mix-blend-mode: screen;
}

main {
  position: relative;
  z-index: 2;
}

.hero-monolith {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: clamp(24px, 5vw, 72px);
  position: relative;
}

.monolith-slab {
  width: min(1180px, 100%);
  min-height: 66vh;
  display: grid;
  place-content: center;
  text-align: center;
  padding: clamp(28px, 7vw, 96px);
  position: relative;
  background:
    linear-gradient(120deg, rgba(0, 214, 182, 0.06), transparent 22%, rgba(138, 0, 80, 0.13) 78%, transparent),
    radial-gradient(circle at 22% 18%, rgba(122, 255, 234, 0.08), transparent 28%),
    radial-gradient(circle at 82% 72%, rgba(214, 0, 122, 0.10), transparent 34%),
    rgba(26, 25, 23, 0.78);
  border: 1px solid rgba(0, 214, 182, 0.12);
  box-shadow: inset 0 1px 0 rgba(212, 207, 200, 0.05), 0 40px 120px rgba(0, 0, 0, 0.42), 0 0 90px rgba(0, 214, 182, 0.05);
  overflow: hidden;
}

.monolith-slab::before,
.archive-cell::before,
.bedrock::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, transparent 0 18%, rgba(212, 207, 200, 0.055) 18.2%, transparent 18.8% 58%, rgba(0, 214, 182, 0.035) 58.2%, transparent 58.7%),
    linear-gradient(24deg, transparent 0 42%, rgba(163, 152, 130, 0.05) 42.2%, transparent 42.9%);
  pointer-events: none;
}

.archive-code,
.ref-code {
  font-family: "Share Tech Mono", monospace;
  color: var(--teal);
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  margin: 0;
}

h1,
h2 {
  font-family: "Bungee Shade", system-ui, sans-serif;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--glow);
  margin: 0;
  text-wrap: balance;
}

h1 {
  font-size: clamp(3.5rem, 8vw, 7rem);
  line-height: 0.95;
  margin: 1.5rem 0 1.25rem;
  text-shadow: 0 0 34px rgba(0, 214, 182, 0.18), 0 0 52px rgba(214, 0, 122, 0.14);
}

.hero-observation {
  width: min(720px, 100%);
  margin: 0 auto;
  font-size: clamp(1rem, 1.5vw, 1.22rem);
  line-height: 1.72;
  color: var(--light-vein);
}

.scroll-sigil {
  position: absolute;
  bottom: 34px;
  left: 50%;
  width: 1px;
  height: 70px;
  background: linear-gradient(180deg, transparent, var(--teal));
  animation: sigil-pulse 2.8s ease-in-out infinite;
}

.scroll-sigil span {
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 10px solid var(--glow);
  transform: translateX(-50%);
  filter: drop-shadow(0 0 10px var(--teal));
}

.archive-grid {
  width: min(1520px, calc(100% - clamp(32px, 6vw, 96px)));
  margin: 0 auto;
  padding: clamp(24px, 4vw, 72px) 0;
  display: grid;
  grid-template-columns: 1.2fr 1fr 0.8fr;
  gap: clamp(16px, 2.5vw, 32px);
  position: relative;
}

.vein-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.vein-path {
  fill: none;
  stroke: rgba(0, 214, 182, 0.08);
  stroke-width: 1;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.vein-path.drawn {
  stroke-dashoffset: 0;
}

.archive-cell {
  min-height: 45vh;
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(22px, 3vw, 42px);
  background:
    radial-gradient(circle at var(--cursor-x) var(--cursor-y), rgba(0, 214, 182, 0.055), rgba(214, 0, 122, 0.025), transparent 34%),
    linear-gradient(145deg, rgba(46, 44, 40, 0.88), rgba(26, 25, 23, 0.75));
  border: 1px solid rgba(0, 214, 182, 0.12);
  box-shadow: inset 0 1px 0 rgba(212, 207, 200, 0.05), 0 24px 80px rgba(0, 0, 0, 0.24);
  overflow: hidden;
  transition: border-color 420ms ease, box-shadow 420ms ease, filter 420ms ease, opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.archive-cell:hover {
  border-color: rgba(122, 255, 234, 0.32);
  box-shadow: inset 0 1px 0 rgba(212, 207, 200, 0.09), 0 28px 90px rgba(0, 0, 0, 0.3), 0 0 44px rgba(0, 214, 182, 0.075);
  filter: saturate(1.08);
}

.archive-cell:hover .barcode {
  filter: brightness(1.8) drop-shadow(0 0 8px rgba(0, 214, 182, 0.5));
}

.archive-cell.tall {
  min-height: calc(45vh + 64px);
}

.archive-cell.panoramic {
  grid-column: 1 / -1;
  min-height: 60vh;
  justify-content: center;
  gap: 1.4rem;
  text-align: center;
  padding-inline: clamp(28px, 8vw, 140px);
}

.aurora-tablet {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 214, 182, 0.16), transparent 34%),
    radial-gradient(ellipse at 80% 45%, rgba(214, 0, 122, 0.13), transparent 36%),
    linear-gradient(145deg, rgba(46, 44, 40, 0.88), rgba(26, 25, 23, 0.84));
}

.barcode {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: repeating-linear-gradient(90deg, #00d6b6 0 8px, transparent 8px 16px, #d6007a 16px 24px, transparent 24px 32px);
  transition: filter 360ms ease;
}

.cell-label {
  font-family: "Chakra Petch", sans-serif;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--stone-warm);
  font-size: clamp(0.9rem, 1.5vw, 1.2rem);
  margin: 0 0 1.2rem;
}

.archive-cell h2 {
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1;
  margin-bottom: 1.4rem;
}

.archive-cell p:not(.cell-label):not(.ref-code),
.bedrock p {
  color: var(--light-vein);
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  line-height: 1.72;
  margin: 0 0 1.4rem;
}

.archive-cell .ref-code {
  margin-top: auto;
  color: var(--teal);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.bedrock {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: clamp(32px, 7vw, 120px);
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 50% 45%, rgba(122, 255, 234, 0.16), transparent 36%),
    radial-gradient(ellipse at 50% 52%, rgba(214, 0, 122, 0.14), transparent 42%),
    repeating-linear-gradient(115deg, transparent 0 38px, rgba(212, 207, 200, 0.03) 39px, transparent 42px),
    #252420;
}

.bedrock-core {
  width: min(1100px, 100%);
  text-align: center;
  position: relative;
  z-index: 1;
}

.bedrock h2 {
  font-size: clamp(3rem, 7.2vw, 6.6rem);
  line-height: 1.05;
  margin-top: 1.3rem;
  color: var(--glow);
  text-shadow: 0 0 50px rgba(122, 255, 234, 0.22), 0 0 70px rgba(214, 0, 122, 0.18);
}

.depth-compass {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 40px;
  height: 40px;
  z-index: 5;
  opacity: 0.6;
  transition: opacity 260ms ease;
}

.depth-compass:hover { opacity: 1; }

.compass-ring {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  border: 1px solid rgba(0, 214, 182, 0.55);
  border-radius: 50%;
  background: rgba(26, 25, 23, 0.72);
  box-shadow: inset 0 0 18px rgba(0, 214, 182, 0.12), 0 0 22px rgba(214, 0, 122, 0.12);
}

.compass-needle {
  position: absolute;
  left: 50%;
  top: 8px;
  width: 2px;
  height: 16px;
  background: var(--glow);
  transform-origin: 50% 12px;
  transform: translateX(-50%) rotate(var(--compass-rotation));
  box-shadow: 0 0 8px var(--teal);
}

@keyframes aurora-one {
  0%, 100% { transform: translateY(-80px); opacity: 0.38; }
  50% { transform: translateY(120px); opacity: 0.84; }
}

@keyframes aurora-two {
  0%, 100% { transform: translateY(100px); opacity: 0.28; }
  50% { transform: translateY(-110px); opacity: 0.76; }
}

@keyframes sigil-pulse {
  0%, 100% { opacity: 0.38; transform: translateX(-50%) scaleY(0.86); }
  50% { opacity: 1; transform: translateX(-50%) scaleY(1); }
}

@media (max-width: 1439px) {
  .archive-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  .archive-grid {
    grid-template-columns: 1fr;
    width: min(100% - 28px, 620px);
  }

  .archive-cell,
  .archive-cell.tall {
    min-height: 45vh;
  }

  .archive-cell.panoramic {
    grid-column: auto;
    min-height: 60vh;
    text-align: left;
  }

  h1 {
    font-size: clamp(3rem, 17vw, 5rem);
  }
}