:root {
  --bg: #04060d;
  --bg-soft: #0a0f1e;
  --panel: rgba(255, 255, 255, 0.05);
  --cream: #eef2ff;
  --mist: #dbe3fb;
  --sand: #ffc46b;
  --moss: #6d4fe0;
  --moss-deep: #312a6e;
  --ink: #070a14;
  --text: #e9edfb;
  --muted: #97a3c4;
  --line: rgba(255, 255, 255, 0.08);
  --shadow: 0 32px 90px rgba(0, 0, 0, 0.34);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --max: 1240px;

  /* run-state palette */
  --state-idle: #2b3450;
  --state-running: #ffc46b;
  --state-done: #22c97a;
  --state-stale: #ff9d2e;
  --state-failed: #ef6a85;
  --state-skipped: #49506e;
  --edge: #7c5cff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  font-family: "Manrope", system-ui, sans-serif;
  background:
    radial-gradient(circle at 12% 12%, rgba(124, 92, 255, 0.16), transparent 22%),
    radial-gradient(circle at 88% 4%, rgba(34, 201, 122, 0.12), transparent 22%),
    linear-gradient(180deg, #04060d 0%, #030509 100%);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 76px 76px;
  mask-image: radial-gradient(circle at center, black 48%, transparent 95%);
  pointer-events: none;
}

a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }

.og-shell {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: 28px 0 72px;
}

.og-header {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(4, 6, 13, 0.86);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.og-brand { display: flex; align-items: center; gap: 12px; }

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6d4fe0, #22c97a);
  color: var(--cream);
  font-weight: 800;
  letter-spacing: 0.04em;
  font-size: 14px;
}

.brand-copy { display: flex; flex-direction: column; line-height: 1.1; }
.brand-copy strong { font-family: "Syne", serif; font-size: 18px; font-weight: 700; }
.brand-copy span { font-size: 11px; letter-spacing: 0.18em; color: var(--muted); text-transform: uppercase; }

.og-nav { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.og-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  color: var(--muted);
  transition: background 0.18s ease, color 0.18s ease;
}
.og-nav a:hover { background: rgba(255, 255, 255, 0.05); color: var(--text); }

.eyebrow {
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--sand);
  margin: 0 0 10px;
}

h1, h2, h3 { font-family: "Syne", serif; letter-spacing: -0.005em; margin: 0 0 12px; font-weight: 600; }
h1 { font-size: clamp(36px, 4.4vw, 56px); line-height: 1.05; }
h2 { font-size: clamp(24px, 2.4vw, 32px); line-height: 1.18; }
h3 { font-size: 18px; line-height: 1.3; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 36px;
  padding: 36px;
  border-radius: var(--radius-xl);
  background: linear-gradient(165deg, rgba(124, 92, 255, 0.18), rgba(34, 201, 122, 0.05) 50%, rgba(255, 255, 255, 0.02));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-copy p { color: var(--muted); line-height: 1.55; font-size: 15.5px; }
.hero-lead { font-size: 17px; color: var(--mist); max-width: 56ch; }

.hero-actions { display: flex; gap: 14px; margin-top: 18px; flex-wrap: wrap; }

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease;
}
.button-primary { background: linear-gradient(135deg, #6d4fe0, #8b6dff); color: var(--cream); }
.button-secondary { background: rgba(255, 255, 255, 0.05); color: var(--text); border-color: var(--line); }
.button:hover { transform: translateY(-1px); }

.hero-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 28px; }
.metric-card { padding: 18px; border-radius: var(--radius-md); background: rgba(255, 255, 255, 0.04); border: 1px solid var(--line); }
.metric-value { display: block; font-family: "Syne", serif; font-size: 28px; font-weight: 700; color: var(--sand); }
.metric-label { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; letter-spacing: 0.05em; }

.hero-rail { display: flex; flex-direction: column; gap: 16px; }
.signal-card { padding: 22px 24px; border-radius: var(--radius-lg); border: 1px solid var(--line); }
.signal-card-dark { background: linear-gradient(180deg, rgba(124, 92, 255, 0.32), rgba(124, 92, 255, 0.05)); color: var(--cream); }
.signal-card-light { background: linear-gradient(180deg, rgba(34, 201, 122, 0.16), rgba(34, 201, 122, 0.02)); color: var(--cream); }
.signal-label { font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--sand); margin: 0 0 8px; }
.signal-card h2 { font-size: 22px; margin-bottom: 8px; }
.signal-card p { color: var(--mist); font-size: 14px; line-height: 1.5; margin: 0; }

.section-block {
  margin: 56px 0 0;
  padding: 36px;
  border-radius: var(--radius-xl);
  background: rgba(10, 15, 30, 0.66);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.section-heading { max-width: 64ch; margin-bottom: 28px; }
.section-heading p { color: var(--muted); margin: 0; font-size: 15.5px; line-height: 1.55; }

.lab-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 28px; align-items: start; }

.lab-canvas-panel {
  padding: 22px;
  border-radius: var(--radius-lg);
  background: rgba(3, 5, 9, 0.78);
  border: 1px solid var(--line);
}
.lab-canvas-panel svg {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.45);
}

.canvas-caption { display: flex; justify-content: space-between; margin-top: 12px; font-size: 12px; letter-spacing: 0.06em; color: var(--muted); }
.canvas-caption .status { color: var(--sand); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; }

.lab-control-panel {
  padding: 22px;
  border-radius: var(--radius-lg);
  background: rgba(10, 15, 30, 0.85);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.control-group { display: flex; flex-direction: column; gap: 8px; }
.control-label { font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); }

input[type="range"] {
  appearance: none;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none; width: 18px; height: 18px; border-radius: 50%;
  background: var(--sand); border: 2px solid var(--ink); cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--sand); border: 2px solid var(--ink); cursor: pointer;
}
.scale-readout { font-size: 12.5px; color: var(--mist); letter-spacing: 0.04em; }

.button-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.18s ease, transform 0.15s ease, border-color 0.18s ease;
}
.chip:hover { background: rgba(255, 255, 255, 0.1); transform: translateY(-1px); }
.chip-active { background: linear-gradient(135deg, #6d4fe0, #8b6dff); border-color: rgba(255, 255, 255, 0.18); color: var(--cream); }

.readout-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
}
.readout { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; font-size: 13px; }
.readout-label { color: var(--muted); letter-spacing: 0.04em; }
.readout-value { font-family: "Syne", serif; font-weight: 700; font-size: 17px; color: var(--cream); }
.readout-emphasis .readout-value { color: var(--sand); font-size: 19px; }

.signal-note { margin: 0; font-size: 12.5px; color: var(--muted); line-height: 1.5; }

.legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 4px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.legend i { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }

.blast-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 180px;
  overflow-y: auto;
}
.blast-list li {
  display: flex;
  justify-content: space-between;
  padding: 7px 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--mist);
}
.blast-list li .tag { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--state-skipped); }
.blast-list li.is-fail .tag { color: var(--state-failed); }

/* SVG node + edge styling driven by data-state */
.node-box { transition: fill 0.3s ease, stroke 0.3s ease; cursor: default; }
.node-label { font-family: "Manrope", sans-serif; font-size: 12px; font-weight: 600; fill: var(--cream); pointer-events: none; }
.edge { stroke: var(--edge); stroke-width: 2; fill: none; opacity: 0.55; transition: opacity 0.3s ease, stroke 0.3s ease; }
.edge.is-active { opacity: 1; stroke: #a78bfa; }
.edge.is-dead { opacity: 0.12; }

.cell { transition: fill 0.25s ease; }

.path-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.path-card { padding: 22px; border-radius: var(--radius-md); background: rgba(255, 255, 255, 0.04); border: 1px solid var(--line); display: flex; flex-direction: column; gap: 8px; }
.path-tag { display: inline-block; padding: 4px 10px; border-radius: 999px; background: rgba(124, 92, 255, 0.28); color: var(--cream); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; width: max-content; }
.path-card h3 { margin: 0; }
.path-card p { color: var(--muted); font-size: 13.5px; line-height: 1.5; margin: 0; }

.og-footer { margin-top: 56px; padding: 24px; border-radius: var(--radius-lg); border: 1px solid var(--line); background: rgba(3, 5, 9, 0.66); color: var(--muted); font-size: 13.5px; line-height: 1.55; }
.og-footer a { color: var(--sand); font-weight: 600; }

[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .node-box, .edge, .cell { transition: none; }
}

@media (max-width: 940px) {
  .hero-grid, .lab-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .og-shell { padding: 18px 0 56px; }
  .hero-grid, .section-block { padding: 24px; }
  .hero-metrics { grid-template-columns: 1fr; }
}