:root {
  color-scheme: dark;
  --page-bg: #091116;
  --page-ink: #e8e0cf;
  --page-muted: #aeb0aa;
  --page-line: rgba(233, 220, 191, 0.14);
  --atlas-deep: #0f1b22;
  --atlas-mid: #162630;
  --atlas-soft: #1f333d;
  --ember: #f4b16c;
  --moss: #82c4ae;
  --signal: #c4d8ff;
  --panel-shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
  --font-display: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --font-body: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  --font-mono: "SFMono-Regular", "Consolas", "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--page-ink);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at top left, rgba(130, 196, 174, 0.16), transparent 28%),
    radial-gradient(circle at 85% 12%, rgba(244, 177, 108, 0.18), transparent 22%),
    linear-gradient(180deg, #0b141a 0%, #091116 45%, #081015 100%);
  background-attachment: fixed;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 85%);
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

.skip-ink {
  position: absolute;
  left: -999px;
  top: 0;
  padding: 0.85rem 1rem;
  background: #fff3dd;
  color: #1a1b18;
  z-index: 30;
}

.skip-ink:focus {
  left: 1rem;
  top: 1rem;
}

.story-shell {
  width: min(1240px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 4rem;
}

.story-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
  margin: 0 0 2rem;
  padding: 0.95rem 1.1rem;
  background: rgba(8, 16, 21, 0.78);
  border: 1px solid var(--page-line);
  border-radius: 999px;
  backdrop-filter: blur(18px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.back-rail,
.topbar-nav a,
.cta-ghost,
.cta-lantern {
  text-decoration: none;
}

.back-rail {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--page-muted);
}

.back-rail:hover,
.back-rail:focus-visible,
.topbar-nav a:hover,
.topbar-nav a:focus-visible {
  color: var(--page-ink);
}

.topbar-mark {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.mark-kicker,
.eyebrow,
.section-kicker,
.panel-label {
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.mark-kicker,
.section-kicker,
.panel-label {
  color: var(--page-muted);
}

.topbar-mark strong {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
}

.topbar-nav {
  display: flex;
  gap: 1.15rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.topbar-nav a {
  font-size: 0.92rem;
  color: var(--page-muted);
}

.hero-observatory,
.ledger-section,
.engine-room,
.flow-band,
.visual-atlas,
.reality-slab,
.faq-ledger,
.final-lantern {
  position: relative;
  margin-bottom: 1.6rem;
  border: 1px solid var(--page-line);
  border-radius: 28px;
  overflow: clip;
  box-shadow: var(--panel-shadow);
}

.hero-observatory::before,
.ledger-section::before,
.engine-room::before,
.flow-band::before,
.visual-atlas::before,
.reality-slab::before,
.faq-ledger::before,
.final-lantern::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 22%, transparent 78%, rgba(255, 255, 255, 0.02));
}

.hero-observatory {
  display: grid;
  grid-template-columns: 1.2fr 0.95fr;
  gap: 2rem;
  padding: clamp(1.5rem, 3vw, 2.6rem);
  background:
    radial-gradient(circle at 18% 12%, rgba(130, 196, 174, 0.15), transparent 28%),
    linear-gradient(135deg, rgba(15, 27, 34, 0.95), rgba(8, 16, 21, 0.96));
}

.hero-copy h1,
.section-heading h2,
.final-lantern h2 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.02;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.hero-copy h1 {
  font-size: clamp(2.8rem, 5vw, 5.2rem);
  max-width: 10ch;
}

.hero-intro,
.ledger-card p,
.engine-card p,
.flow-track p,
.reality-card p,
.faq-stack p,
.final-lantern p {
  color: #d1d0cb;
  font-size: 1rem;
  line-height: 1.7;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.1rem;
}

.eyebrow {
  margin: 0;
  color: var(--ember);
}

.hero-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 0.45rem;
}

.cta-lantern,
.cta-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0 1.2rem;
  border-radius: 999px;
  font-size: 0.95rem;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

.cta-lantern {
  background: linear-gradient(135deg, #f0d8a7, #f4b16c);
  color: #22170f;
  box-shadow: 0 12px 22px rgba(244, 177, 108, 0.24);
}

.cta-ghost {
  border: 1px solid var(--page-line);
  color: var(--page-ink);
  background: rgba(255, 255, 255, 0.03);
}

.cta-lantern:hover,
.cta-lantern:focus-visible,
.cta-ghost:hover,
.cta-ghost:focus-visible {
  transform: translateY(-2px);
}

.hero-signals {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
}

.hero-signals li {
  padding: 0.95rem 1rem;
  border: 1px solid var(--page-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.025);
}

.hero-signals span {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--page-muted);
}

.story-desk {
  display: grid;
  grid-template-columns: 1.05fr 0.9fr;
  gap: 1rem;
  align-content: center;
}

.desk-panel,
.desk-notes,
.ledger-card,
.engine-card,
.reality-card,
.atlas-figure,
.faq-stack details {
  border: 1px solid var(--page-line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.04);
}

.desk-panel {
  min-height: 180px;
  padding: 1rem;
}

.desk-panel-story {
  grid-column: 1 / span 2;
  background: linear-gradient(180deg, rgba(31, 51, 61, 0.72), rgba(20, 35, 43, 0.72));
}

.desk-panel-map,
.desk-panel-voice {
  min-height: 180px;
}

.story-lines {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.story-lines span {
  display: block;
  height: 11px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(232, 224, 207, 0.92), rgba(232, 224, 207, 0.08));
}

.story-lines span:nth-child(2) {
  width: 88%;
}

.story-lines span:nth-child(3) {
  width: 94%;
}

.story-lines span:nth-child(4) {
  width: 76%;
}

.map-web {
  position: relative;
  min-height: 130px;
  margin-top: 0.9rem;
}

.map-web svg {
  width: 100%;
  height: 130px;
}

.map-web path {
  fill: none;
  stroke: rgba(196, 216, 255, 0.62);
  stroke-width: 2;
}

.node {
  position: absolute;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--moss);
  box-shadow: 0 0 0 6px rgba(130, 196, 174, 0.12);
}

.node-a { left: 14%; top: 16%; }
.node-b { left: 48%; top: 8%; }
.node-c { right: 18%; top: 42%; }
.node-d { left: 38%; bottom: 10%; }

.voice-bars {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.55rem;
  align-items: end;
  min-height: 130px;
  margin-top: 1rem;
}

.voice-bars span {
  display: block;
  border-radius: 999px 999px 10px 10px;
  background: linear-gradient(180deg, rgba(244, 177, 108, 0.9), rgba(130, 196, 174, 0.44));
}

.voice-bars span:nth-child(1) { height: 35%; }
.voice-bars span:nth-child(2) { height: 74%; }
.voice-bars span:nth-child(3) { height: 52%; }
.voice-bars span:nth-child(4) { height: 88%; }
.voice-bars span:nth-child(5) { height: 64%; }
.voice-bars span:nth-child(6) { height: 80%; }
.voice-bars span:nth-child(7) { height: 46%; }

.desk-notes {
  grid-column: 1 / span 2;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  padding: 1rem;
}

.desk-notes p {
  margin: 0;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  font-size: 0.85rem;
  color: var(--page-muted);
}

.ledger-section,
.engine-room,
.flow-band,
.visual-atlas,
.reality-slab,
.faq-ledger,
.final-lantern {
  padding: clamp(1.3rem, 3vw, 2.1rem);
  background: linear-gradient(180deg, rgba(12, 22, 28, 0.94), rgba(10, 18, 23, 0.96));
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.4rem;
}

.section-heading h2,
.final-lantern h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  max-width: 14ch;
}

.section-kicker,
.panel-label {
  margin: 0;
}

.ledger-grid,
.engine-grid,
.reality-grid {
  display: grid;
  gap: 1rem;
}

.ledger-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ledger-card,
.engine-card,
.reality-card {
  padding: 1.25rem 1.2rem;
}

.ledger-card h3,
.engine-card h3,
.flow-track h3,
.reality-card h3,
.faq-stack summary,
.atlas-figure figcaption,
.final-lantern h2 {
  font-family: var(--font-display);
}

.ledger-card-wide {
  grid-column: 1 / span 2;
}

.engine-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.engine-card h3,
.ledger-card h3,
.reality-card h3,
.flow-track h3 {
  margin: 0 0 0.65rem;
  font-size: 1.35rem;
  font-weight: 600;
}

.engine-card p,
.ledger-card p,
.reality-card p {
  margin: 0;
}

.flow-track {
  display: grid;
  gap: 0.95rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow-track li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1rem 0 1rem 0;
  border-top: 1px solid var(--page-line);
}

.flow-track li:first-child {
  border-top: 0;
}

.flow-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 50%;
  border: 1px solid rgba(244, 177, 108, 0.3);
  color: var(--ember);
  font-family: var(--font-mono);
  background: rgba(244, 177, 108, 0.06);
}

.flow-track p {
  margin: 0;
}

.atlas-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 1rem;
}

.atlas-figure {
  margin: 0;
  overflow: hidden;
}

.atlas-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #0d161b;
}

.atlas-figure figcaption {
  padding: 1rem 1rem 1.15rem;
  font-size: 0.95rem;
  color: var(--page-muted);
  line-height: 1.5;
}

.reality-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.reality-card ul {
  margin: 0;
  padding-left: 1.2rem;
  color: #d7d5cf;
  line-height: 1.7;
}

.status-line {
  margin: 0 0 0.75rem;
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--moss);
}

.faq-stack {
  display: grid;
  gap: 0.8rem;
}

.faq-stack details {
  padding: 1rem 1rem 1rem 1.1rem;
}

.faq-stack summary {
  cursor: pointer;
  font-size: 1.16rem;
  font-weight: 600;
  list-style: none;
}

.faq-stack summary::-webkit-details-marker {
  display: none;
}

.faq-stack summary::after {
  content: "+";
  float: right;
  color: var(--ember);
  font-family: var(--font-mono);
}

.faq-stack details[open] summary::after {
  content: "-";
}

.faq-stack p {
  margin: 0.85rem 0 0;
}

.final-lantern {
  text-align: center;
  padding-top: 2rem;
  padding-bottom: 2.4rem;
  background:
    radial-gradient(circle at top center, rgba(244, 177, 108, 0.16), transparent 28%),
    linear-gradient(180deg, rgba(17, 28, 34, 0.95), rgba(10, 17, 22, 0.98));
}

.final-lantern h2 {
  max-width: none;
  margin-bottom: 0.7rem;
}

.final-lantern p {
  max-width: 48rem;
  margin: 0 auto;
}

a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

@media (max-width: 1080px) {
  .hero-observatory,
  .atlas-grid,
  .ledger-grid,
  .reality-grid,
  .engine-grid {
    grid-template-columns: 1fr;
  }

  .hero-signals {
    grid-template-columns: 1fr;
  }

  .ledger-card-wide {
    grid-column: auto;
  }

  .engine-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .story-topbar {
    grid-template-columns: 1fr;
    border-radius: 24px;
  }

  .topbar-nav {
    justify-content: flex-start;
  }
}

@media (max-width: 760px) {
  .story-shell {
    width: min(100% - 1rem, 1240px);
  }

  .hero-observatory,
  .ledger-section,
  .engine-room,
  .flow-band,
  .visual-atlas,
  .reality-slab,
  .faq-ledger,
  .final-lantern {
    border-radius: 22px;
  }

  .hero-copy h1 {
    max-width: none;
  }

  .story-desk {
    grid-template-columns: 1fr;
  }

  .desk-panel-story,
  .desk-notes {
    grid-column: auto;
  }

  .engine-grid {
    grid-template-columns: 1fr;
  }

  .flow-track li {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}