:root {
  color-scheme: dark;
  --ink: #11100f;
  --paper: #f3ede2;
  --muted: #aca69c;
  --line: rgba(243, 237, 226, 0.15);
  --orange: #ff6a3d;
  --acid: #d8ff58;
  --sky: #72d7ff;
  --violet: #c49bff;
  --max: 76rem;
  --serif: Iowan Old Style, Baskerville, Times New Roman, serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, Segoe UI, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 78% 5%, rgba(196, 155, 255, 0.11), transparent 24rem),
    radial-gradient(circle at 8% 25%, rgba(255, 106, 61, 0.08), transparent 26rem),
    var(--ink);
  color: var(--paper);
  font: 400 1rem/1.6 var(--sans);
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.6rem 0.9rem;
  border-radius: 999px;
  background: var(--acid);
  color: var(--ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid var(--sky);
  outline-offset: 4px;
}

.masthead {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 3rem), var(--max));
  margin: 0 auto;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--paper);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.wordmark-mark {
  display: grid;
  width: 2.65rem;
  height: 2.65rem;
  place-items: center;
  border: 1px solid var(--paper);
  border-radius: 50%;
  font: 700 0.66rem/1 var(--mono);
  letter-spacing: -0.08em;
}

.wordmark-mark span {
  color: var(--orange);
}

nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.2rem);
}

nav a {
  color: var(--muted);
  font-size: 0.82rem;
  text-decoration: none;
}

nav a:hover {
  color: var(--paper);
}

main,
footer {
  width: min(calc(100% - 3rem), var(--max));
  margin-inline: auto;
}

.hero {
  display: grid;
  min-height: min(49rem, calc(100vh - 5rem));
  grid-template-columns: minmax(0, 1.12fr) minmax(18rem, 0.88fr);
  align-items: center;
  gap: 4rem;
  padding: 5.5rem 0 4.5rem;
}

.eyebrow,
.card-kicker,
.boundary-label {
  margin: 0 0 1.2rem;
  color: var(--muted);
  font: 650 0.72rem/1.25 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.pulse {
  display: inline-block;
  width: 0.48rem;
  height: 0.48rem;
  margin-right: 0.5rem;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 0.3rem rgba(216, 255, 88, 0.12);
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.055em;
}

h1 {
  max-width: 8ch;
  font-size: clamp(4.4rem, 10.5vw, 8.9rem);
  line-height: 0.76;
}

h1 em {
  color: var(--orange);
  font-weight: 400;
}

.hero-deck {
  max-width: 40rem;
  margin: 2.5rem 0 0;
  color: #cac4ba;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 3.1rem;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  border-color: var(--acid);
  background: var(--acid);
  color: var(--ink);
}

.button-quiet:hover {
  background: rgba(243, 237, 226, 0.08);
}

.hero-orbit {
  position: relative;
  width: min(35vw, 28rem);
  aspect-ratio: 1;
  justify-self: end;
}

.orbit,
.orbit-core {
  position: absolute;
  border-radius: 50%;
}

.orbit {
  inset: 0;
  border: 1px solid var(--line);
  animation: orbit 34s linear infinite;
}

.orbit-two {
  inset: 15%;
  animation-direction: reverse;
  animation-duration: 25s;
}

.orbit-three {
  inset: 31%;
  border-style: dashed;
  animation-duration: 18s;
}

.orbit span {
  position: absolute;
  top: -0.8rem;
  left: 50%;
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--ink);
  color: var(--muted);
  font: 0.63rem/1 var(--mono);
  transform: translateX(-50%);
}

.orbit-two span {
  color: var(--sky);
}

.orbit-three span {
  color: var(--acid);
}

.orbit-core {
  inset: 38%;
  display: grid;
  place-items: center;
  border: 1px solid var(--orange);
  color: var(--paper);
  font: 0.68rem/1.45 var(--mono);
  text-align: center;
}

@keyframes orbit {
  to { transform: rotate(360deg); }
}

.truth-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-block: 1px solid var(--line);
}

.truth-strip p {
  margin: 0;
  padding: 1.3rem 1.5rem;
  color: var(--muted);
  font-size: 0.84rem;
}

.truth-strip p + p {
  border-left: 1px solid var(--line);
}

.truth-strip strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--paper);
}

.section {
  padding: 8rem 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 2rem;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr minmax(18rem, 0.7fr);
  gap: 4rem;
  align-items: end;
  margin-bottom: 3.5rem;
}

h2 {
  font-size: clamp(3rem, 6vw, 5.5rem);
  line-height: 0.92;
}

.section-heading > p {
  max-width: 34rem;
  margin: 0;
  color: var(--muted);
}

.artifact-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
}

.artifact-card {
  position: relative;
  grid-column: span 4;
  min-height: 29rem;
  padding: 1.5rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.025);
}

.artifact-card::before {
  position: absolute;
  top: 0;
  right: 0;
  width: 7rem;
  height: 7rem;
  border-radius: 0 0 0 100%;
  background: var(--card-color, var(--orange));
  content: "";
  opacity: 0.11;
}

.artifact-card:nth-child(2) { --card-color: var(--sky); }
.artifact-card:nth-child(3) { --card-color: var(--violet); }

.artifact-card h3 {
  max-width: 10ch;
  margin: 0 0 1rem;
  font: 400 2.2rem/1 var(--serif);
  letter-spacing: -0.04em;
}

.card-purpose {
  min-height: 5.2rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.metric-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 1.5rem 0;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
}

.metric {
  min-height: 5.6rem;
  padding: 0.8rem;
}

.metric:nth-child(even) { border-left: 1px solid var(--line); }
.metric:nth-child(n + 3) { border-top: 1px solid var(--line); }

.metric strong {
  display: block;
  color: var(--card-color, var(--orange));
  font: 500 1.45rem/1.1 var(--mono);
}

.metric span {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.3;
}

.card-note {
  margin: 1rem 0;
  padding-left: 0.8rem;
  border-left: 2px solid var(--card-color, var(--orange));
  color: #d3cdc3;
  font-size: 0.79rem;
}

.source-line {
  position: absolute;
  right: 1.5rem;
  bottom: 1.3rem;
  left: 1.5rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font: 0.62rem/1.4 var(--mono);
}

.protocol {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.boundary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.boundary-card {
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-radius: 1rem;
}

.boundary-card.does {
  background: rgba(216, 255, 88, 0.04);
}

.boundary-card.does-not {
  background: rgba(255, 106, 61, 0.04);
}

.does .boundary-label { color: var(--acid); }
.does-not .boundary-label { color: var(--orange); }

.boundary-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.boundary-card li {
  padding: 0.82rem 0;
  border-bottom: 1px solid var(--line);
  color: #d0cac0;
}

.boundary-card li:last-child { border-bottom: 0; }

.lens-definitions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

.definition {
  padding: 1.2rem 1.4rem;
  border-left: 2px solid var(--sky);
  background: rgba(114, 215, 255, 0.04);
}

.definition:nth-child(2) {
  border-color: var(--violet);
  background: rgba(196, 155, 255, 0.04);
}

.definition strong {
  display: block;
  margin-bottom: 0.35rem;
  font: 0.69rem/1 var(--mono);
  text-transform: uppercase;
}

.definition p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.flow-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.4rem;
}

.filter-button {
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: 0.7rem/1 var(--mono);
  cursor: pointer;
}

.filter-button:hover,
.filter-button[aria-pressed="true"] {
  border-color: var(--paper);
  background: var(--paper);
  color: var(--ink);
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.flow-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.4rem 1rem 1.4rem 0;
  border-bottom: 1px solid var(--line);
}

.flow-card:nth-child(odd) {
  padding-right: 1.4rem;
  border-right: 1px solid var(--line);
}

.flow-card:nth-child(even) {
  padding-left: 1.4rem;
}

.rank {
  color: var(--muted);
  font: 0.7rem/1.5 var(--mono);
}

.flow-card h3 {
  margin: 0;
  font-size: 1rem;
}

.flow-card h3 a {
  text-decoration-color: rgba(243, 237, 226, 0.25);
  text-underline-offset: 0.25rem;
}

.flow-card h3 a:hover { text-decoration-color: var(--sky); }

.flow-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0.7rem 0;
}

.chip {
  padding: 0.3rem 0.48rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  color: var(--muted);
  font: 0.61rem/1 var(--mono);
}

.flow-nuance {
  margin: 0;
  color: #c5bfb6;
  font-size: 0.78rem;
}

.route-line {
  margin: 0.8rem 0 0;
  color: var(--sky);
  font: 0.64rem/1.4 var(--mono);
}

.field-notes {
  display: grid;
  grid-template-columns: 0.55fr 1fr;
  gap: 4rem;
}

.note-links {
  border-top: 1px solid var(--line);
}

.note-links a {
  display: grid;
  grid-template-columns: 0.7fr 1fr;
  gap: 1.5rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

.note-links a:hover span { color: var(--acid); }
.note-links small { color: var(--muted); }

.notice,
.error-notice {
  padding: 1rem;
  border: 1px solid var(--orange);
  border-radius: 0.6rem;
  color: #d6d0c7;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 2.5rem 0 4rem;
  color: var(--muted);
  font-size: 0.75rem;
}

footer p { margin: 0; }

@media (max-width: 820px) {
  .masthead { width: min(calc(100% - 2rem), var(--max)); }
  .masthead nav a:not(:last-child) { display: none; }
  main, footer { width: min(calc(100% - 2rem), var(--max)); }
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 4.5rem; }
  .hero-orbit { width: min(72vw, 23rem); justify-self: center; margin-top: 1rem; }
  .section { padding: 5.5rem 0; }
  .section-heading { grid-template-columns: 1fr; gap: 1.5rem; }
  .artifact-card { grid-column: span 12; min-height: 25rem; }
  .boundary-grid, .lens-definitions, .field-notes { grid-template-columns: 1fr; }
  .field-notes { gap: 2rem; }
}

@media (max-width: 580px) {
  .wordmark > span:last-child { display: none; }
  h1 { font-size: clamp(4rem, 22vw, 6rem); }
  .truth-strip { grid-template-columns: 1fr; }
  .truth-strip p + p { border-top: 1px solid var(--line); border-left: 0; }
  .flow-grid { grid-template-columns: 1fr; }
  .flow-card,
  .flow-card:nth-child(odd),
  .flow-card:nth-child(even) { padding: 1.25rem 0; border-right: 0; }
  .note-links a { grid-template-columns: 1fr; gap: 0.25rem; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}