.dna-home {
  --dna-bg: #050505;
  --dna-cyan: #00e5ff;
  --dna-magenta: #ff0055;
  --dna-amber: #ffb300;
  --dna-white: #f7fbff;
  --dna-muted: rgba(247,251,255,0.56);
  --dna-dim: rgba(247,251,255,0.34);
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 680px;
  overflow: hidden;
  color: var(--dna-white);
  background:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px),
    var(--dna-bg);
  background-size: 42px 42px;
  font-family: Inter, system-ui, sans-serif;
}

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

.dna-home .aurora {
  position: absolute;
  inset: -20%;
  pointer-events: none;
  filter: blur(88px);
  opacity: 0.9;
}
.dna-home .orb {
  position: absolute;
  width: 46vw;
  height: 46vw;
  border-radius: 50%;
  opacity: 0.16;
  transition: transform 1200ms cubic-bezier(.16,1,.3,1), opacity 1200ms ease;
}
.dna-home .orb.cyan { background: radial-gradient(circle, var(--dna-cyan), transparent 68%); left: 8%; top: 2%; }
.dna-home .orb.magenta { background: radial-gradient(circle, var(--dna-magenta), transparent 68%); right: 0; bottom: 3%; }
.dna-home .orb.amber { background: radial-gradient(circle, var(--dna-amber), transparent 68%); left: 48%; top: 18%; opacity: 0.06; }

.dna-home .helix-wrap {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  perspective: 1200px;
  pointer-events: none;
  z-index: 2;
}
.dna-home .helix {
  position: relative;
  width: min(560px, 68vw);
  height: 112vh;
  transform-style: preserve-3d;
  transition: opacity 900ms ease, scale 900ms ease, translate 900ms cubic-bezier(.16,1,.3,1);
}
.dna-home .pair {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  transform: translateY(var(--pair-y, 0px));
}
.dna-home .rung {
  position: absolute;
  left: 0;
  top: 50%;
  width: var(--rung-width, 120px);
  height: 1px;
  transform: translateX(var(--rung-x, 0px)) rotate(var(--rung-angle, 0deg));
  transform-origin: left center;
  background: linear-gradient(90deg, rgba(0,229,255,0.52), rgba(255,255,255,0.12), rgba(255,0,85,0.42));
  opacity: var(--rung-opacity, 0.16);
}
.dna-home .node {
  position: absolute;
  top: 50%;
  left: 0;
  width: var(--node-size, 14px);
  height: var(--node-size, 14px);
  margin-top: calc(var(--node-size, 14px) / -2);
  margin-left: calc(var(--node-size, 14px) / -2);
  border-radius: 50%;
  opacity: var(--node-opacity, 0.85);
  transform: translateX(var(--node-x, 0px)) scaleX(var(--node-squash, 1));
  box-shadow:
    0 0 var(--node-glow, 18px) currentColor,
    0 0 var(--node-glow-strong, 30px) currentColor;
}
.dna-home .node.cyan {
  color: var(--dna-cyan);
  background: var(--dna-cyan);
}
.dna-home .node.magenta {
  color: var(--dna-magenta);
  background: var(--dna-magenta);
}

.dna-home .tesseract {
  position: absolute;
  z-index: 3;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
  transition: opacity 900ms ease, scale 900ms ease;
  pointer-events: none;
}
.dna-home .cube {
  position: relative;
  width: min(34vw, 430px);
  aspect-ratio: 1;
  transform-style: preserve-3d;
  animation: dnaHomeTilt 9s linear infinite;
  filter: drop-shadow(0 0 22px rgba(255,179,0,0.35));
}
.dna-home .cube span {
  position: absolute;
  inset: 16%;
  border: 1px solid rgba(255,179,0,0.84);
  transform: rotate(var(--r)) translateZ(var(--z));
}
.dna-home .cube span:nth-child(1) { --r: 0deg; --z: 0px; }
.dna-home .cube span:nth-child(2) { --r: 45deg; --z: 32px; }
.dna-home .cube span:nth-child(3) { --r: 90deg; --z: -32px; }
.dna-home .cube::before,
.dna-home .cube::after {
  content: "";
  position: absolute;
  inset: 29%;
  border: 1px solid rgba(255,179,0,0.5);
  transform: rotate(45deg);
}
.dna-home .cube::after { inset: 5%; opacity: 0.36; transform: rotate(0deg); }
@keyframes dnaHomeTilt {
  from { transform: rotateX(62deg) rotateZ(0deg); }
  to { transform: rotateX(62deg) rotateZ(360deg); }
}

.dna-home .scene {
  position: absolute;
  z-index: 10;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 72px 6vw 110px;
  opacity: 0;
  transform: translateY(24px) scale(0.99);
  filter: blur(8px);
  pointer-events: none;
  transition: opacity 520ms ease, transform 700ms cubic-bezier(.16,1,.3,1), filter 700ms ease;
}
.dna-home .scene.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
  pointer-events: auto;
}
.dna-home .scene-grid {
  width: min(1180px, 100%);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 6vw;
}
.dna-home .scene-grid.reverse .copy { grid-column: 2; }
.dna-home .scene-grid.reverse .visual { grid-column: 1; grid-row: 1; }
.dna-home .center { text-align: center; max-width: 1050px; }
.dna-home .eyebrow {
  margin: 0 0 16px;
  color: var(--accent, var(--dna-cyan));
  font: 700 clamp(0.7rem, 1vw, 0.9rem) "JetBrains Mono", monospace;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}
.dna-home h1,
.dna-home h2 {
  margin: 0;
  font-weight: 900;
  line-height: 0.94;
  letter-spacing: 0;
}
.dna-home h1 { font-size: clamp(4.2rem, 10vw, 9rem); }
.dna-home h2 { font-size: clamp(3.2rem, 6vw, 6.2rem); }
.dna-home .gradient {
  background: linear-gradient(90deg, var(--dna-cyan), var(--dna-white), var(--dna-magenta));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.dna-home .accent { color: var(--accent, var(--dna-cyan)); }
.dna-home .subhead,
.dna-home .definition {
  color: var(--dna-muted);
  font: 500 clamp(1rem, 1.4vw, 1.24rem)/1.7 "JetBrains Mono", monospace;
}
.dna-home .subhead { margin: 34px auto 0; max-width: 720px; }
.dna-home .definition { margin: 28px 0 0; max-width: 540px; }
.dna-home .why {
  margin-top: 22px;
  max-width: 620px;
  color: rgba(255,255,255,0.78);
  font-size: clamp(1rem, 1.35vw, 1.18rem);
  line-height: 1.72;
}
.dna-home .industry-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  max-width: 610px;
}
.dna-home .industry {
  border: 1px solid rgba(255,255,255,0.13);
  background: rgba(255,255,255,0.045);
  padding: 14px;
  border-radius: 8px;
}
.dna-home .industry strong {
  display: block;
  color: var(--accent, var(--dna-cyan));
  font: 700 0.78rem "JetBrains Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 5px;
}
.dna-home .industry span { color: var(--dna-dim); font-size: 0.9rem; }
.dna-home .visual {
  min-height: 300px;
  display: grid;
  place-items: center;
}
.dna-home canvas { max-width: 100%; height: auto; }
.dna-home .born-content { width: min(1180px, 100%); text-align: center; }
.dna-home .scene[data-scene="born"] { padding-top: 56px; padding-bottom: 86px; }
.dna-home .born-title {
  font-size: clamp(2.4rem, 4.4vw, 5.2rem);
  white-space: nowrap;
}
.dna-home .born-visual { min-height: 190px; margin-top: 2px; margin-bottom: 2px; }
.dna-home .born-visual canvas { width: min(540px, 70vw); }
.dna-home .born-caption {
  margin: -14px 0 18px;
  color: rgba(255,255,255,0.34);
  font: 500 clamp(0.82rem, 1.1vw, 1rem) "JetBrains Mono", monospace;
  letter-spacing: 0.08em;
}
.dna-home .born-why {
  max-width: 900px;
  margin: 0 auto;
  color: rgba(255,255,255,0.9);
  font-size: clamp(1.2rem, 1.8vw, 1.8rem);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: 0;
}
.dna-home .born-grid { margin-left: auto; margin-right: auto; max-width: 900px; }
.dna-home .proof-chain {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 34px auto 28px;
  max-width: 980px;
}
.dna-home .proof-step {
  width: 128px;
  min-height: 72px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.04);
  border-radius: 8px;
  color: rgba(255,255,255,0.32);
  transition: border-color 300ms ease, color 300ms ease, background 300ms ease, box-shadow 300ms ease;
}
.dna-home .proof-step.active {
  border-color: var(--dna-cyan);
  color: var(--dna-cyan);
  background: rgba(0,229,255,0.1);
  box-shadow: 0 0 18px rgba(0,229,255,0.2);
}
.dna-home .proof-step b { display: block; font: 800 0.9rem "JetBrains Mono", monospace; }
.dna-home .proof-step span { display: block; margin-top: 5px; font: 500 0.7rem "JetBrains Mono", monospace; color: rgba(255,255,255,0.36); }
.dna-home .proof-link { width: 34px; height: 1px; background: rgba(255,255,255,0.18); }
.dna-home .proof-link.active { background: linear-gradient(90deg, var(--dna-cyan), rgba(0,229,255,0.25)); }
.dna-home .stats {
  display: flex;
  justify-content: center;
  gap: min(7vw, 86px);
  margin-top: 26px;
}
.dna-home .stat b { display: block; color: var(--dna-cyan); font-size: clamp(2.3rem, 4.2vw, 4.2rem); line-height: 1; }
.dna-home .stat span { color: var(--dna-dim); font: 700 0.78rem "JetBrains Mono", monospace; letter-spacing: 0.18em; }
.dna-home .outro-verbs {
  white-space: nowrap;
  font-size: clamp(2.5rem, 5.4vw, 5.8rem);
}
.dna-home .controls {
  position: absolute;
  z-index: 30;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 28px;
  background: rgba(0,0,0,0.52);
  backdrop-filter: blur(10px);
  transition: transform 220ms ease, opacity 220ms ease;
}
.dna-home .controls.collapsed { transform: translateY(calc(100% - 16px)); opacity: 0.28; }
.dna-home .icon-btn {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.7);
  cursor: pointer;
  font: 700 0.62rem "JetBrains Mono", monospace;
  text-transform: uppercase;
}
.dna-home .icon-btn.active { color: #fff; background: rgba(255,255,255,0.16); }
.dna-home .segments { display: flex; gap: 8px; flex: 1; }
.dna-home .segment {
  position: relative;
  height: 12px;
  flex: 1;
  border: 0;
  padding: 0;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255,255,255,0.18);
  cursor: pointer;
}
.dna-home .segment i {
  display: block;
  width: 0;
  height: 100%;
  background: rgba(255,255,255,0.9);
  border-radius: inherit;
}
.dna-home .counter {
  min-width: 52px;
  color: rgba(255,255,255,0.55);
  font: 700 0.9rem "JetBrains Mono", monospace;
  text-align: right;
}

@media (max-width: 900px) {
  .dna-home { min-height: 760px; }
  .dna-home .scene { padding: 94px 22px 100px; place-items: start center; overflow-y: auto; }
  .dna-home .scene-grid,
  .dna-home .scene-grid.reverse { grid-template-columns: 1fr; gap: 28px; }
  .dna-home .scene-grid.reverse .copy,
  .dna-home .scene-grid.reverse .visual { grid-column: auto; grid-row: auto; }
  .dna-home h1 { font-size: clamp(3.4rem, 16vw, 5.2rem); }
  .dna-home h2 { font-size: clamp(2.7rem, 13vw, 4.8rem); }
  .dna-home .definition { max-width: none; }
  .dna-home .industry-grid { grid-template-columns: 1fr; }
  .dna-home .visual { min-height: 190px; }
  .dna-home .scene[data-scene="born"] { padding-top: 94px; padding-bottom: 100px; }
  .dna-home .born-title { white-space: normal; font-size: clamp(2.4rem, 10vw, 4.6rem); }
  .dna-home .born-visual { min-height: 180px; }
  .dna-home .born-visual canvas { width: min(520px, 100%); }
  .dna-home .born-why { font-size: clamp(1.1rem, 5vw, 1.7rem); }
  .dna-home .proof-chain { align-items: stretch; overflow-x: auto; justify-content: flex-start; padding-bottom: 8px; }
  .dna-home .proof-step { width: 116px; flex: 0 0 116px; }
  .dna-home .proof-link { flex: 0 0 24px; margin-top: 36px; }
  .dna-home .stats { flex-direction: column; gap: 18px; }
  .dna-home .controls { padding: 14px; gap: 10px; }
  .dna-home .icon-btn { width: 40px; height: 40px; }
  .dna-home .counter { display: none; }
  .dna-home .helix { width: 76vw; opacity: 0.42; }
  .dna-home .outro-verbs { white-space: normal; font-size: clamp(2.8rem, 12vw, 4.8rem); }
  .dna-home .scene[data-scene="solver"] {
    align-content: start;
    padding-top: 86px;
  }
  .dna-home .scene[data-scene="solver"] h2 {
    font-size: clamp(2.2rem, 10vw, 3.8rem);
  }
  .dna-home .scene[data-scene="solver"] .proof-chain {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    overflow: visible;
    margin: 18px auto;
    max-width: 360px;
  }
  .dna-home .scene[data-scene="solver"] .proof-step {
    width: auto;
    min-height: 56px;
    padding: 8px 6px;
  }
  .dna-home .scene[data-scene="solver"] .proof-step b { font-size: 0.74rem; }
  .dna-home .scene[data-scene="solver"] .proof-step span { font-size: 0.62rem; }
  .dna-home .scene[data-scene="solver"] .proof-link { display: none; }
  .dna-home .scene[data-scene="solver"] .stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-top: 14px;
  }
  .dna-home .scene[data-scene="solver"] .stat b { font-size: clamp(1.45rem, 7vw, 2.2rem); }
  .dna-home .scene[data-scene="solver"] .stat span {
    display: block;
    font-size: 0.58rem;
    letter-spacing: 0.08em;
  }
  .dna-home .scene[data-scene="solver"] .subhead {
    margin-top: 14px;
    font-size: 0.9rem;
    line-height: 1.55;
  }
  .dna-home .scene[data-scene="solver"] .why {
    margin-top: 12px;
    font-size: 0.9rem;
    line-height: 1.55;
  }
  .dna-home .scene[data-scene="solver"] .industry-grid {
    margin-top: 14px;
    gap: 8px;
  }
  .dna-home .scene[data-scene="solver"] .industry {
    padding: 10px 12px;
  }
}