:root {
  --font-audit-inter: "Inter**";
  --font-audit-grotesk: "Grotesk**";
  --font-audit-inter-bre: "Inter*";
  --font-audit-grotesk-bre: "Grotesk*";
  --abyss: #071A24;
  --teal: #00C2B8;
  --mint: #72F2B4;
  --cyan: #2DE2FF;
  --violet: #324DFF;
  --foam: #D9FFF3;
  --aqua-gray: #5E8A91;
  --progress: 0;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--abyss);
  color: var(--foam);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 26%, rgba(45, 226, 255, .15), transparent 28%),
    radial-gradient(circle at 72% 58%, rgba(50, 77, 255, .18), transparent 34%),
    linear-gradient(120deg, rgba(0, 194, 184, .08), transparent 42%, rgba(114, 242, 180, .06));
  pointer-events: none;
}

.observatory {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  isolation: isolate;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: .42;
  mix-blend-mode: screen;
  background-image:
    repeating-linear-gradient(0deg, rgba(217,255,243,.04) 0 1px, transparent 1px 4px),
    radial-gradient(circle, rgba(217,255,243,.42) 0 1px, transparent 1.5px),
    radial-gradient(circle, rgba(45,226,255,.22) 0 1px, transparent 2px);
  background-size: 100% 7px, 37px 41px, 83px 79px;
  animation: silt 9s linear infinite;
}

@keyframes silt { to { transform: translate3d(-37px, 23px, 0); } }

.brand-lock {
  position: fixed;
  left: 28px;
  top: 28px;
  bottom: 96px;
  width: 236px;
  z-index: 8;
  border-left: 2px solid var(--teal);
  padding-left: 18px;
  pointer-events: none;
}

.vessel-id {
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: clamp(2.5rem, 5vw, 5.7rem);
  line-height: .82;
  font-weight: 700;
  letter-spacing: -.08em;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  text-shadow: 0 0 28px rgba(45,226,255,.32);
}

.slice-line {
  position: absolute;
  left: 14px;
  top: 47%;
  width: 126px;
  height: 5px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  clip-path: polygon(0 0, 100% 0, 83% 100%, 0 100%);
}

.depth-readout {
  position: absolute;
  bottom: 0;
  left: 18px;
  color: var(--aqua-gray);
  font-family: Archivo, sans-serif;
  font-size: .72rem;
  letter-spacing: .22em;
  writing-mode: vertical-rl;
}

.track {
  position: absolute;
  inset: 0;
  display: flex;
  width: 500vw;
  height: 100vh;
  transform: translate3d(calc(var(--progress) * -400vw), 0, 0);
  transition: transform .82s cubic-bezier(.19, 1, .22, 1);
  will-change: transform;
}

.panel {
  position: relative;
  width: 100vw;
  height: 100vh;
  flex: 0 0 100vw;
  overflow: hidden;
  padding: 8vh 8vw 12vh 22vw;
  background:
    linear-gradient(90deg, rgba(7,26,36,.94), rgba(7,26,36,.65)),
    repeating-linear-gradient(115deg, rgba(94,138,145,.12) 0 1px, transparent 1px 76px);
}

.panel::after {
  content: "";
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(45,226,255,.22);
  clip-path: polygon(0 0, 92% 0, 100% 18%, 100% 100%, 8% 100%, 0 84%);
  pointer-events: none;
}

.panel-copy { position: relative; z-index: 3; max-width: 560px; }
.kicker {
  margin: 0 0 14px;
  color: var(--cyan);
  font-family: Archivo, sans-serif;
  font-weight: 600;
  font-size: .78rem;
  letter-spacing: .22em;
  text-transform: uppercase;
}

h1, h2 {
  margin: 0;
  font-family: Archivo, "Arial Narrow", sans-serif;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -.06em;
  line-height: .82;
}

h1 { font-size: clamp(4.6rem, 12vw, 12.5rem); max-width: 800px; }
h2 { font-size: clamp(3.8rem, 8vw, 8.6rem); max-width: 760px; }

.panel-copy p:last-child {
  color: var(--foam);
  font-size: clamp(1rem, 1.35vw, 1.35rem);
  line-height: 1.45;
  max-width: 520px;
}

.chart-field {
  position: absolute;
  inset: 0 0 0 16vw;
  background:
    linear-gradient(rgba(94,138,145,.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94,138,145,.12) 1px, transparent 1px);
  background-size: 72px 72px;
}

.contour {
  position: absolute;
  border: 1px solid rgba(45,226,255,.25);
  border-radius: 48% 52% 42% 58%;
  transform: rotate(-17deg);
}
.contour-a { width: 760px; height: 390px; right: 7vw; top: 12vh; }
.contour-b { width: 520px; height: 260px; right: 24vw; bottom: 11vh; border-color: rgba(114,242,180,.18); }

.sonar-wedge {
  position: absolute;
  right: 14vw;
  top: 17vh;
  width: 44vw;
  height: 58vh;
  background: conic-gradient(from -42deg, rgba(45,226,255,.28), transparent 26%, transparent);
  clip-path: polygon(0 48%, 100% 0, 78% 100%);
  animation: sweep 5.6s ease-in-out infinite;
}

@keyframes sweep { 50% { transform: rotate(9deg) scale(1.04); opacity: .68; } }

.drift-node {
  position: absolute;
  width: 11px;
  height: 11px;
  border: 2px solid var(--mint);
  background: var(--abyss);
  box-shadow: 0 0 24px rgba(114,242,180,.75);
  transform: rotate(45deg);
}
.n1{left:34%;top:29%}.n2{left:57%;top:19%}.n3{left:72%;top:45%}.n4{left:43%;top:66%}.n5{left:85%;top:72%}.n6{left:63%;top:82%}

.open-copy { margin-top: 48vh; }
.coordinate-tag {
  position: absolute;
  right: 9vw;
  bottom: 14vh;
  color: var(--aqua-gray);
  font-family: Archivo, sans-serif;
  letter-spacing: .2em;
}

.gate-frame, .command-map {
  position: absolute;
  right: 8vw;
  top: 12vh;
  width: min(62vw, 900px);
  height: 68vh;
  border: 2px solid var(--cyan);
  clip-path: polygon(0 13%, 18% 0, 100% 0, 92% 100%, 7% 100%, 0 82%);
  background: rgba(0,194,184,.055);
  box-shadow: inset 0 0 42px rgba(45,226,255,.13), 0 0 42px rgba(50,77,255,.12);
}

.trace-frame::before {
  content: "";
  position: absolute;
  inset: -2px;
  border: 2px solid var(--mint);
  clip-path: inherit;
  opacity: calc(.18 + var(--progress) * .82);
  animation: seam 3.8s ease-in-out infinite;
}
@keyframes seam { 50% { filter: drop-shadow(0 0 18px var(--cyan)); } }

.gate-label, .final-label {
  position: absolute;
  top: 18px;
  left: 34px;
  z-index: 2;
  color: var(--mint);
  font-family: Archivo, sans-serif;
  font-size: .78rem;
  letter-spacing: .24em;
  text-transform: uppercase;
}

.edge-svg, .network-svg, .command-svg { width: 100%; height: 100%; overflow: visible; }
.trace-zone, .map-zone {
  fill: rgba(50,77,255,.12);
  stroke: var(--cyan);
  stroke-width: 2;
  stroke-dasharray: 1200;
  stroke-dashoffset: calc(1200 - var(--progress) * 1200);
}
.graph-edge, .cold-trail {
  fill: none;
  stroke: var(--teal);
  stroke-width: 3;
  stroke-linecap: square;
  stroke-dasharray: 900;
  stroke-dashoffset: calc(900 - var(--progress) * 900);
  filter: drop-shadow(0 0 8px rgba(45,226,255,.72));
}
.e2, .cold-trail { stroke: var(--violet); opacity: .82; }
.svg-node {
  fill: var(--abyss);
  stroke: var(--mint);
  stroke-width: 3;
  filter: drop-shadow(0 0 9px rgba(114,242,180,.8));
  transition: r .25s ease, fill .25s ease;
}
.svg-node.is-hot, .svg-node:hover { fill: var(--mint); }

.side-caption {
  position: absolute;
  left: 23vw;
  top: 18vh;
  color: var(--aqua-gray);
  writing-mode: vertical-rl;
  font-family: Archivo, sans-serif;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.gate-copy { margin-top: 58vh; }

.legend-drawer {
  position: absolute;
  left: 25vw;
  top: 13vh;
  width: 260px;
  padding: 24px;
  background: rgba(7,26,36,.8);
  border: 1px solid var(--teal);
  clip-path: polygon(0 0, 100% 0, 88% 100%, 0 100%);
  display: grid;
  gap: 10px;
  font-family: Archivo, sans-serif;
  text-transform: uppercase;
}
.legend-drawer span, .legend-drawer em { color: var(--aqua-gray); font-size: .72rem; letter-spacing: .18em; }
.legend-drawer b { color: var(--foam); font-size: .95rem; letter-spacing: .12em; }

.network-plate {
  position: absolute;
  right: 7vw;
  top: 12vh;
  width: 60vw;
  height: 70vh;
  background: linear-gradient(135deg, rgba(50,77,255,.16), rgba(0,194,184,.05));
  clip-path: polygon(8% 0, 100% 0, 93% 82%, 78% 100%, 0 90%, 0 15%);
  border: 1px solid rgba(45,226,255,.45);
}
.axis { position: absolute; background: rgba(217,255,243,.24); }
.x-axis { left: 8%; right: 5%; top: 72%; height: 1px; transform: skewY(-8deg); }
.y-axis { top: 8%; bottom: 8%; left: 23%; width: 1px; transform: skewX(-12deg); }
.network-copy { margin-top: 58vh; }

.comparison-shell {
  position: absolute;
  right: 9vw;
  top: 14vh;
  width: 62vw;
  height: 66vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.slice {
  position: relative;
  border: 1px solid var(--cyan);
  background:
    radial-gradient(circle at 50% 50%, rgba(94,138,145,.24), transparent 38%),
    repeating-linear-gradient(140deg, rgba(45,226,255,.13) 0 1px, transparent 1px 34px);
  clip-path: polygon(0 0, 100% 8%, 88% 100%, 0 92%);
}
.slice-right {
  clip-path: polygon(12% 8%, 100% 0, 100% 92%, 0 100%);
  background:
    linear-gradient(135deg, rgba(114,242,180,.18), transparent),
    repeating-linear-gradient(35deg, rgba(0,194,184,.18) 0 2px, transparent 2px 42px);
}
.slice span {
  position: absolute;
  left: 26px;
  bottom: 24px;
  color: var(--foam);
  font-family: Archivo, sans-serif;
  text-transform: uppercase;
  letter-spacing: .16em;
}
.pressure-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 172px;
  height: 172px;
  margin: -86px 0 0 -86px;
  border: 2px solid var(--mint);
  border-radius: 50%;
  background: rgba(7,26,36,.9);
  display: grid;
  place-items: center;
  box-shadow: 0 0 36px rgba(114,242,180,.28);
}
.pressure-ring b { font-family: Archivo, sans-serif; font-size: 4rem; line-height: .7; }
.pressure-ring small { color: var(--aqua-gray); text-align: center; text-transform: uppercase; letter-spacing: .14em; }
.slice-copy { margin-top: 58vh; }

.command-map { width: 66vw; height: 72vh; top: 10vh; }
.command-copy { margin-top: 57vh; max-width: 620px; }
.command-copy p:last-child { font-size: clamp(1.25rem, 2vw, 2rem); color: var(--mint); }

.progress-rail {
  position: fixed;
  left: 28vw;
  right: 8vw;
  bottom: 34px;
  height: 28px;
  z-index: 9;
  border-top: 1px solid rgba(94,138,145,.55);
}
.progress-fill {
  position: absolute;
  top: -2px;
  left: 0;
  height: 3px;
  width: calc(var(--progress) * 100%);
  background: linear-gradient(90deg, var(--teal), var(--cyan), var(--mint));
  box-shadow: 0 0 14px var(--cyan);
}
.tick {
  position: absolute;
  top: -9px;
  width: 18px;
  height: 18px;
  padding: 0;
  border: 1px solid var(--aqua-gray);
  background: var(--abyss);
  transform: rotate(45deg);
  cursor: pointer;
}
.tick:nth-of-type(1){left:0}.tick:nth-of-type(2){left:25%}.tick:nth-of-type(3){left:50%}.tick:nth-of-type(4){left:75%}.tick:nth-of-type(5){left:100%}
.tick span { display: block; transform: rotate(-45deg) translate(18px, -9px); color: var(--aqua-gray); font-family: Archivo, sans-serif; font-size: .68rem; }
.tick.active { border-color: var(--cyan); background: var(--teal); box-shadow: 0 0 18px var(--cyan); }

.chapter-readout {
  position: fixed;
  right: 8vw;
  top: 34px;
  z-index: 9;
  color: var(--cyan);
  font-family: Archivo, sans-serif;
  font-size: .82rem;
  letter-spacing: .24em;
  text-transform: uppercase;
}

@media (max-width: 840px) {
  .brand-lock { left: 18px; width: 80px; }
  .panel { padding-left: 120px; padding-right: 5vw; }
  .gate-frame, .network-plate, .comparison-shell, .command-map { width: 74vw; right: 3vw; }
  .progress-rail { left: 120px; right: 24px; }
  h1 { font-size: 4.1rem; }
  h2 { font-size: 3.4rem; }
}