:root {
  color-scheme: dark;
  --ink: #f8fafc;
  --muted: #9babc1;
  --panel: #101e30;
  --line: #32445b;
  --cyan: #45d7ee;
  --lime: #a3e635;
  --blue: #6ba6ff;
  --violet: #b79cff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 53% 20%, rgba(69, 215, 238, .10), transparent 33rem),
    linear-gradient(145deg, #07111f, #0c1929 58%, #07111d);
}

button { font: inherit; }

.shell {
  width: min(100%, 1600px);
  min-height: 100vh;
  margin: 0 auto;
  padding: clamp(26px, 4vw, 60px) clamp(24px, 5vw, 78px) 28px;
}

.masthead {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
}

.eyebrow, .owner, dt, .hint {
  margin: 0;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .14em;
}

.eyebrow { color: var(--cyan); }

h1 {
  max-width: 920px;
  margin: 8px 0 7px;
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.02;
  letter-spacing: -.04em;
}

.dek {
  max-width: 890px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(16px, 1.6vw, 22px);
  line-height: 1.45;
}

.trace {
  min-width: 170px;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid #3a526a;
  border-radius: 999px;
  color: var(--ink);
  background: rgba(16, 30, 48, .85);
  cursor: pointer;
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
}

.trace:hover { border-color: var(--cyan); background: #15283d; }
.trace:active { transform: scale(.98); }
.trace-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 16px rgba(163, 230, 53, .8);
}

.map {
  display: grid;
  grid-template-columns: .82fr 1.08fr 1.65fr;
  gap: clamp(30px, 4vw, 68px);
  align-items: stretch;
  margin-top: clamp(34px, 5vw, 68px);
}

.plane {
  position: relative;
  min-height: 270px;
  overflow: hidden;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 24px;
  color: var(--ink);
  text-align: left;
  background: linear-gradient(145deg, rgba(24, 40, 61, .94), rgba(12, 25, 42, .96));
  cursor: pointer;
  isolation: isolate;
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease, opacity 220ms ease;
}

.plane::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 22% 8%, rgba(69, 215, 238, .15), transparent 48%);
  content: "";
  opacity: 0;
  transition: opacity 220ms ease;
}

.plane:hover, .plane:focus-visible, .plane.active {
  border-color: var(--plane-accent, var(--cyan));
  box-shadow: 0 18px 55px rgba(0, 0, 0, .28), 0 0 0 1px color-mix(in srgb, var(--plane-accent, var(--cyan)) 42%, transparent);
  transform: translateY(-4px);
}

.plane:hover::before, .plane:focus-visible::before, .plane.active::before { opacity: 1; }

.plane:focus-visible, .trace:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 4px;
}

.plane strong {
  display: block;
  max-width: 330px;
  margin-top: 18px;
  font-size: clamp(22px, 2.2vw, 34px);
  line-height: 1.08;
  letter-spacing: -.025em;
}

.owner { color: var(--plane-accent, var(--cyan)); }

.summary {
  display: block;
  max-width: 390px;
  margin-top: 14px;
  color: #c4d0df;
  font-size: 16px;
  line-height: 1.5;
}

.step {
  position: absolute;
  right: 22px;
  bottom: 16px;
  color: rgba(255, 255, 255, .12);
  font-size: 56px;
  font-weight: 800;
  letter-spacing: -.08em;
}

.product::after, .harness::after {
  position: absolute;
  top: 50%;
  left: calc(100% + 1px);
  width: clamp(30px, 4vw, 68px);
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(69, 215, 238, .25));
  content: "";
  pointer-events: none;
}

.product { --plane-accent: var(--cyan); }
.harness { --plane-accent: var(--cyan); border-width: 2px; }
.execution { --plane-accent: var(--lime); }
.tools { --plane-accent: var(--blue); }
.state { --plane-accent: var(--violet); }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 30px;
}

.chips i {
  padding: 6px 9px;
  border: 1px solid rgba(69, 215, 238, .28);
  border-radius: 7px;
  color: #a5f3fc;
  background: rgba(8, 57, 74, .65);
  font-size: 10px;
  font-style: normal;
  font-weight: 750;
  letter-spacing: .08em;
}

.downstream {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.downstream .plane { min-height: 126px; padding: 22px 24px; }
.downstream .plane strong { margin-top: 10px; font-size: clamp(19px, 1.75vw, 28px); }
.downstream .summary { margin-top: 8px; font-size: 14px; line-height: 1.35; }
.downstream .step { right: 18px; bottom: 11px; font-size: 38px; }
.execution { grid-column: 1 / -1; }

.detail {
  display: grid;
  grid-template-columns: .85fr 2.5fr;
  gap: 34px;
  align-items: center;
  min-height: 142px;
  margin-top: 28px;
  padding: 22px 26px;
  border: 1px solid #34465b;
  border-radius: 20px;
  background: rgba(6, 15, 27, .72);
}

.detail-heading span { color: var(--cyan); font-size: 11px; font-weight: 750; letter-spacing: .13em; }
.detail h2 { margin: 7px 0 0; font-size: 25px; line-height: 1.1; }
.detail dl { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin: 0; }
.detail dl div { min-width: 0; }
dt { color: #7f92aa; }
dd { margin: 8px 0 0; color: #d6dfeb; font-size: 14px; line-height: 1.42; }
.hint { margin: 18px 0 0; color: #6f8299; text-align: center; }

.plane.tracing {
  animation: trace-pulse 560ms ease-out;
}

@keyframes trace-pulse {
  0% { transform: translateY(-4px) scale(1); }
  42% { transform: translateY(-4px) scale(1.025); box-shadow: 0 0 0 7px rgba(69, 215, 238, .12), 0 18px 55px rgba(0, 0, 0, .30); }
  100% { transform: translateY(-4px) scale(1); }
}

@media (max-width: 760px) {
  .shell { padding: 24px 18px 20px; }
  .masthead { display: block; }
  h1 { font-size: 31px; }
  .dek { font-size: 15px; }
  .trace { width: 100%; margin-top: 18px; }
  .map { display: block; margin-top: 22px; }
  .plane, .downstream .plane { width: 100%; min-height: 0; margin-top: 12px; padding: 18px 20px; border-radius: 17px; }
  .plane:first-child { margin-top: 0; }
  .plane strong, .downstream .plane strong { margin-top: 8px; font-size: 21px; }
  .summary, .downstream .summary { max-width: calc(100% - 48px); margin-top: 6px; font-size: 13px; }
  .step, .downstream .step { right: 16px; bottom: 10px; font-size: 34px; }
  .product::after, .harness::after { display: none; }
  .chips { display: none; }
  .downstream { display: block; }
  .detail { display: block; min-height: 0; margin-top: 16px; padding: 18px 20px; border-radius: 17px; }
  .detail h2 { font-size: 21px; }
  .detail dl { display: block; }
  .detail dl div { margin-top: 14px; }
  dd { margin-top: 4px; font-size: 13px; }
  .hint { font-size: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}