:root {
  --paper: #F2F0EB;
  --card: rgba(255, 255, 255, 0.9);
  --ink: #160D3A;
  --line: rgba(23, 23, 22, 0.24);
  --blue: #0AE5FA;
  --amber: #FFBA00;
  --coral: #FF3E7A;
  --green: #0077A0;
  --lilac: #C8A2C8;
  --indigo: #160D3A;
  --sky: #B9D0FF;
}

* { box-sizing: border-box; }
html { background: var(--indigo); }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
}
a { color: inherit; }

.concept-frame {
  min-height: 100svh;
  padding: .7rem;
  display: grid;
  grid-template-columns: 13.5rem minmax(0, 1fr);
  gap: .7rem;
}
.concept-rail {
  min-height: calc(100svh - 1.4rem);
  display: flex;
  flex-direction: column;
  gap: .7rem;
  position: sticky;
  top: .7rem;
  align-self: start;
}
.rail-brand, .rail-card, .rail-pill { text-decoration: none; }
.rail-brand {
  min-height: 4.8rem;
  padding: .55rem .9rem .45rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.rail-brand strong { max-width: 6ch; font-size: 2.15rem; line-height: .9; letter-spacing: -.065em; }
.rail-brand span { margin-top: .25rem; font-size: .6rem; line-height: 1; letter-spacing: .08em; text-transform: uppercase; }
.rail-heading { display: none; }
.rail-capabilities, .rail-utility { display: grid; gap: .55rem; }
.rail-card {
  position: relative;
  min-height: 8rem;
  padding: .75rem;
  border: 1px solid transparent;
  border-radius: 1rem;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto 1fr;
  transition: transform 180ms ease, border-color 180ms ease, filter 180ms ease;
}
.rail-card:hover, .rail-card:focus-visible { transform: translateX(.25rem); filter: saturate(1.15); }
.rail-card.active { border-color: var(--ink); }
.rail-card.blue { background: var(--blue); }
.rail-card.amber { background: var(--amber); }
.rail-card.coral { background: var(--coral); }
.rail-card.green { background: var(--green); }
.rail-card.green { color: white; }
.rail-card strong { grid-column: 1 / -1; align-self: end; max-width: 12ch; font-size: .84rem; line-height: 1.05; }
.rail-number, .rail-arrow { font-size: .72rem; font-weight: 800; }
.rail-arrow { font-size: 1rem; }
.rail-utility { margin-top: auto; }
.rail-pill {
  min-height: 2.8rem;
  padding: .75rem;
  border-radius: .8rem;
  display: flex;
  align-items: center;
  gap: .55rem;
  font-size: .72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .03em;
}
.rail-pill-icon { width: 1rem; height: 1rem; flex: 0 0 auto; fill: currentColor; }
.rail-socials { display: grid; grid-template-columns: repeat(3, 1fr); gap: .45rem; }
.rail-socials a {
  min-height: 2.8rem;
  border: 1px solid var(--ink);
  border-radius: .8rem;
  background: rgba(255,255,255,.25);
  display: grid;
  place-items: center;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}
.rail-socials a:hover, .rail-socials a:focus-visible { background: var(--ink); color: white; transform: translateY(-2px); }
.rail-socials svg { width: 1rem; height: 1rem; fill: currentColor; }
.rail-pill.lilac { background: var(--lilac); }
.rail-pill.ink { background: var(--indigo); color: white; }
.rail-pill.outline { border: 1px solid var(--ink); background: rgba(255,255,255,.25); }
.concept-main { min-width: 0; display: grid; gap: .7rem; }
.rounded-panel { overflow: hidden; border: 1px solid var(--line); border-radius: 2rem; background: var(--card); }

.concept-hero {
  position: relative;
  min-height: calc(100svh - 1.4rem);
  display: grid;
  align-items: end;
  padding: clamp(1.2rem, 4vw, 4rem);
  isolation: isolate;
}
.concept-field {
  position: absolute;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  background: var(--sky);
}
.concept-field::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(239,236,228,.24)); }
.field-shape { position: absolute; border-radius: 999px; opacity: .9; filter: blur(.5px); animation: field-drift 18s ease-in-out infinite alternate; }
.field-shape.one { width: 58%; aspect-ratio: 1; top: -20%; left: -8%; background: var(--blue); }
.field-shape.two { width: 43%; aspect-ratio: 1; right: 4%; top: 5%; background: var(--lilac); animation-delay: -7s; }
.field-shape.three { width: 56%; height: 28%; right: -12%; bottom: 8%; background: var(--coral); transform: rotate(-24deg); animation-delay: -11s; }
.field-shape.four { width: 42%; height: 42%; left: 26%; bottom: -14%; border-radius: 2rem; background: var(--green); transform: rotate(20deg); animation-delay: -4s; }
.field-orbit { position: absolute; width: 38%; aspect-ratio: 1; right: 12%; top: 17%; border: clamp(2rem, 5vw, 5rem) solid var(--amber); border-radius: 50%; animation: orbit-turn 22s linear infinite; }
.hero-copy-card {
  width: min(60rem, 100%);
  padding: clamp(1.2rem, 3vw, 2.4rem);
  border: 0;
  border-radius: 0;
  background: transparent;
  backdrop-filter: none;
  box-shadow: none;
  text-shadow: 0 1px 12px rgba(239,236,228,.72);
}
.concept-eyebrow, .panel-kicker { margin: 0 0 .7rem; font-size: .7rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.hero-copy-card h1, .project-intro h1 { margin: 0; font-size: clamp(2.7rem, 7.5vw, 8.4rem); line-height: .86; letter-spacing: -.075em; text-wrap: balance; }
.hero-copy-card .hero-summary, .project-deck { max-width: 47rem; margin: 1rem 0 0; font-size: clamp(1rem, 1.6vw, 1.35rem); line-height: 1.45; font-weight: 650; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.3rem; }
.concept-button { display: inline-flex; align-items: center; min-height: 2.9rem; padding: .7rem 1.1rem; border: 1px solid var(--ink); border-radius: 999px; background: var(--ink); color: white; text-decoration: none; font-size: .76rem; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.concept-button.secondary { background: rgba(255,255,255,.35); color: var(--ink); }

.concept-ticker { min-height: 3.5rem; display: flex; align-items: center; overflow: hidden; background: var(--indigo); color: var(--cyan, #0AE5FA); }
.ticker-track { display: flex; flex-wrap: nowrap; width: max-content; gap: 3rem; padding-left: 2rem; animation: ticker 28s linear infinite; font-size: .78rem; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; white-space: nowrap; }
.ticker-track span { flex: 0 0 auto; white-space: nowrap; }
.concept-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: .7rem; }
.concept-grid article, .project-copy, .metric-card, .system-board { padding: clamp(1.2rem, 3vw, 2.5rem); }
.concept-grid h2, .project-copy h2, .system-board h2 { margin: 0; font-size: clamp(2rem, 4vw, 4.8rem); line-height: .94; letter-spacing: -.06em; }
.concept-grid p, .project-copy p, .system-board p { max-width: 62ch; font-size: .96rem; line-height: 1.65; }
.principle-card { min-height: 25rem; display: flex; flex-direction: column; justify-content: space-between; background: var(--lilac); }
.principle-card strong { display: block; max-width: 12ch; font-size: clamp(2rem, 4.4vw, 5.2rem); line-height: .88; letter-spacing: -.06em; }

.project-intro {
  min-height: 63svh;
  padding: clamp(1.2rem, 4vw, 4rem);
  display: grid;
  align-content: end;
  background: radial-gradient(circle at 80% 20%, rgba(10,229,250,.65), transparent 35%), radial-gradient(circle at 15% 75%, rgba(255,62,122,.45), transparent 34%), var(--card);
}
.project-meta { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: 1.4rem; }
.project-meta span { padding: .48rem .75rem; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.38); font-size: .68rem; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.metric-row { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: .7rem; }
.metric-card { min-height: 14rem; display: flex; flex-direction: column; justify-content: space-between; }
.metric-card:nth-child(1) { background: var(--blue); }
.metric-card:nth-child(2) { background: var(--amber); }
.metric-card:nth-child(3) { background: var(--green); color: white; }
.metric-card strong { font-size: clamp(2.7rem, 6vw, 6.8rem); line-height: .82; letter-spacing: -.08em; }
.metric-card span { max-width: 18ch; font-size: .78rem; font-weight: 800; text-transform: uppercase; }
.project-copy-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: .7rem; }
.project-copy { min-height: 24rem; }
.project-copy.strategy { background: var(--lilac); }
.project-copy.outcomes { background: var(--sky); }
.system-board { min-height: 32rem; background: var(--green); color: white; }
.system-map { margin-top: 2rem; display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: .7rem; }
.system-step { min-height: 10rem; padding: 1rem; border: 1px solid rgba(23,23,22,.5); border-radius: 1.2rem; background: rgba(240,237,229,.62); display: flex; flex-direction: column; justify-content: space-between; }
.system-step span { font-size: .7rem; font-weight: 800; }
.system-step strong { font-size: clamp(1.2rem, 2.2vw, 2rem); letter-spacing: -.05em; }

@keyframes field-drift { to { translate: 5% -3%; scale: 1.08; } }
@keyframes orbit-turn { to { transform: rotate(360deg); } }
@keyframes ticker { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; } }

@media (max-width: 900px) {
  .concept-frame { grid-template-columns: 1fr; padding: .45rem; }
  .concept-rail { min-height: 0; position: static; }
  .rail-brand { min-height: 3.8rem; padding: .5rem .6rem; }
  .rail-brand strong { font-size: 2rem; }
  .rail-brand span, .rail-utility { display: none; }
  .rail-heading { display: block; margin: 0; font-size: .72rem; font-weight: 800; text-transform: uppercase; }
  .rail-capabilities { display: flex; gap: .35rem; overflow-x: auto; padding-bottom: .2rem; }
  .rail-card { flex: 0 0 9.2rem; min-height: 5.6rem; border-radius: .8rem; }
  .concept-hero { min-height: 67svh; border-radius: 1.4rem; }
  .concept-grid, .project-copy-grid, .metric-row { grid-template-columns: 1fr; }
  .metric-card { min-height: 10rem; }
  .system-map { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 520px) {
  .hero-copy-card h1, .project-intro h1 { font-size: clamp(2.55rem, 15vw, 4.4rem); }
  .hero-copy-card { border-radius: 1.1rem; }
  .rounded-panel { border-radius: 1.4rem; }
  .system-map { grid-template-columns: 1fr; }
}