:root {
  --ink: #17231f;
  --ink-soft: #33453d;
  --paper: #eee3c6;
  --paper-light: #fff9e9;
  --moss: #4b694b;
  --acid: #d5e44e;
  --rust: #c95538;
  --aqua: #57b6b4;
  --sun: #f6b74a;
}

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

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(23,35,31,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23,35,31,.035) 1px, transparent 1px),
    var(--paper);
  background-size: 24px 24px;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

a { color: inherit; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: .75rem 1rem;
  border: 3px solid var(--ink);
  background: var(--paper-light);
}

.skip-link:focus { top: 1rem; }

.field-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem clamp(1rem, 4vw, 4rem);
  color: var(--paper-light);
  text-transform: uppercase;
  letter-spacing: .11em;
  font-size: .72rem;
  font-weight: 900;
}

.exit-link {
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.exit-link:hover,
.exit-link:focus-visible { border-color: var(--acid); }

.signal {
  display: flex;
  align-items: center;
  gap: .55rem;
  margin: 0;
}

.signal span {
  width: .72rem;
  height: .72rem;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 .3rem rgba(213,228,78,.18);
  animation: signalPulse 2s ease-in-out infinite;
}

.arrival {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  display: grid;
  align-items: end;
  color: var(--paper-light);
  background: #112d38;
}

.arrival-landscape,
.arrival-haze {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.arrival-landscape {
  object-fit: cover;
  object-position: center 63%;
  filter: saturate(.9) contrast(1.08);
  animation: arrive 1.8s cubic-bezier(.2,.8,.2,1) both;
}

.arrival-haze {
  background:
    linear-gradient(180deg, rgba(8,25,31,.58), transparent 34%),
    linear-gradient(90deg, rgba(8,25,31,.94) 0%, rgba(8,25,31,.52) 46%, transparent 78%),
    linear-gradient(0deg, rgba(8,25,31,.6), transparent 45%);
}

.arrival-copy {
  position: relative;
  z-index: 2;
  max-width: 850px;
  padding: clamp(7rem, 15vw, 11rem) clamp(1.3rem, 7vw, 7rem) clamp(5rem, 9vw, 7rem);
}

.eyebrow {
  margin: 0 0 .85rem;
  font-size: .78rem;
  font-weight: 950;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.arrival h1 {
  margin: 0;
  font-size: clamp(5rem, 17vw, 13rem);
  line-height: .72;
  letter-spacing: -.075em;
  text-transform: uppercase;
  transform: rotate(-2deg);
}

.arrival h1::after {
  content: "";
  display: block;
  width: min(78%, 8em);
  height: clamp(.55rem, 1.5vw, 1rem);
  margin: .2em 0 .28em .05em;
  background: var(--acid);
  clip-path: polygon(0 20%, 100% 0, 98% 85%, 2% 100%);
}

.arrival-lede {
  max-width: 610px;
  margin: 0 0 2rem;
  font-size: clamp(1.15rem, 2.5vw, 1.65rem);
  line-height: 1.35;
  font-weight: 700;
}

.scale-note {
  position: absolute;
  z-index: 2;
  right: clamp(1rem, 4vw, 4rem);
  bottom: 2rem;
  margin: 0;
  writing-mode: vertical-rl;
  text-transform: uppercase;
  letter-spacing: .14em;
  font: 800 .65rem/1 monospace;
}

.scale-note span { color: var(--acid); }

.field-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.4rem;
  padding: 0 1.35rem;
  border: 3px solid var(--ink);
  box-shadow: .4rem .4rem 0 var(--ink);
  font-weight: 950;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: .04em;
  transition: transform .15s ease, box-shadow .15s ease;
}

.field-button:hover,
.field-button:focus-visible {
  transform: translate(.2rem, .2rem);
  box-shadow: .2rem .2rem 0 var(--ink);
}

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

.field-button-secondary {
  color: var(--paper-light);
  background: var(--rust);
}

.torn-section { position: relative; }

.torn-section::before,
.torn-section::after {
  content: "";
  position: absolute;
  z-index: 2;
  left: 0;
  right: 0;
  height: 18px;
  background: var(--paper-light);
  clip-path: polygon(0 45%, 5% 15%, 11% 72%, 18% 25%, 25% 65%, 32% 20%, 40% 70%, 49% 18%, 57% 62%, 66% 25%, 74% 72%, 84% 20%, 92% 60%, 100% 30%, 100% 100%, 0 100%);
}

.torn-section::before { top: -17px; }
.torn-section::after {
  bottom: -17px;
  transform: rotate(180deg);
}

.manifesto {
  display: grid;
  grid-template-columns: auto minmax(280px, 1fr) minmax(260px, .7fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  align-items: center;
  padding: clamp(4rem, 8vw, 8rem) clamp(1.3rem, 7vw, 7rem);
  background: var(--paper-light);
}

.manifesto-mark {
  display: grid;
  place-items: center;
  width: clamp(5rem, 10vw, 8rem);
  aspect-ratio: 1;
  border: .45rem solid var(--ink);
  border-radius: 52% 48% 55% 45%;
  background: var(--aqua);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 950;
  transform: rotate(-8deg);
}

.manifesto h2,
.section-heading h2,
.book-copy h2,
.kit-copy h2 {
  margin: 0;
  font-size: clamp(2.4rem, 6vw, 5.8rem);
  line-height: .9;
  letter-spacing: -.06em;
}

.manifesto > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.55;
}

.specimen-lab {
  padding: clamp(5rem, 10vw, 9rem) clamp(1.3rem, 7vw, 7rem);
  overflow: hidden;
  color: var(--paper-light);
  background: radial-gradient(circle at 80% 20%, rgba(87,182,180,.15), transparent 25rem), var(--ink);
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr minmax(16rem, 1.5fr) minmax(12rem, .55fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: clamp(3rem, 7vw, 6rem);
}

.section-heading > p:last-child {
  color: #b6c4b8;
  line-height: 1.5;
}

.specimen-stage {
  display: grid;
  grid-template-columns: minmax(300px, 1.35fr) minmax(260px, .65fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: center;
}

.specimen-stack {
  position: relative;
  min-height: min(72vw, 760px);
  perspective: 1500px;
}

.specimen-card {
  position: absolute;
  top: 0;
  left: 50%;
  width: min(54vw, 460px);
  overflow: hidden;
  border: .55rem solid var(--paper-light);
  box-shadow: 1.2rem 1.2rem 0 rgba(0,0,0,.3);
  transform-origin: 50% 110%;
  transition: transform .55s cubic-bezier(.2,.8,.2,1), filter .35s ease;
}

.specimen-card img {
  display: block;
  width: 100%;
  height: auto;
}

.specimen-card:nth-child(1) { transform: translateX(-74%) rotate(-10deg) scale(.9); }
.specimen-card:nth-child(2) { transform: translateX(-61%) rotate(-3deg) scale(.94); }
.specimen-card:nth-child(3) { transform: translateX(-47%) rotate(5deg) scale(.9); }
.specimen-card:nth-child(4) { transform: translateX(-35%) rotate(11deg) scale(.86); }
.specimen-card:not(.is-active) { filter: saturate(.55) brightness(.66); }

.specimen-card.is-active {
  z-index: 5;
  filter: none;
  transform: translateX(-50%) rotate(-1deg) scale(1);
}

.specimen-console {
  border-left: 5px solid var(--acid);
  padding-left: clamp(1.3rem, 3vw, 2.5rem);
}

.console-label {
  color: var(--acid);
  text-transform: uppercase;
  letter-spacing: .16em;
  font: 800 .72rem/1.3 monospace;
}

.specimen-console h3 {
  margin: .5rem 0 1rem;
  font-size: clamp(2.7rem, 6vw, 5rem);
  line-height: .9;
}

.specimen-console > p:not(.console-label) {
  max-width: 30rem;
  color: #d9dfd9;
  font-size: 1.1rem;
  line-height: 1.6;
}

.specimen-controls {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 2rem;
}

.specimen-controls button {
  width: 3.2rem;
  height: 3.2rem;
  border: 2px solid var(--paper-light);
  color: var(--paper-light);
  background: transparent;
  cursor: pointer;
  font: 900 .9rem/1 monospace;
}

.specimen-controls button:hover,
.specimen-controls button:focus-visible,
.specimen-controls button.is-active {
  color: var(--ink);
  background: var(--acid);
}

.book-section {
  display: grid;
  grid-template-columns: minmax(280px, .85fr) minmax(300px, 1fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: center;
  padding: clamp(5rem, 10vw, 10rem) clamp(1.3rem, 8vw, 9rem);
  background: var(--paper-light);
}

.book-art {
  position: relative;
  justify-self: center;
  max-width: 610px;
  transform: rotate(-2deg);
}

.book-art::before {
  content: "";
  position: absolute;
  inset: 1.5rem -1.2rem -1.2rem 1.5rem;
  z-index: -1;
  background: var(--rust);
}

.book-art img {
  display: block;
  width: 100%;
  border: .55rem solid var(--ink);
}

.evidence-tag {
  position: absolute;
  right: -1.5rem;
  top: 2.5rem;
  padding: .7rem 1rem;
  border: 3px solid var(--ink);
  color: var(--ink);
  background: var(--acid);
  font: 900 .7rem/1 monospace;
  text-transform: uppercase;
  transform: rotate(6deg);
}

.book-copy p:not(.eyebrow),
.kit-copy > p:not(.eyebrow) {
  max-width: 43rem;
  font-size: 1.18rem;
  line-height: 1.6;
}

.book-copy p:not(.eyebrow) { color: var(--ink-soft); }

.book-copy ul {
  display: grid;
  gap: .75rem;
  margin: 2rem 0 2.5rem;
  padding: 0;
  list-style: none;
}

.book-copy li {
  position: relative;
  padding-left: 1.7rem;
  font-weight: 800;
}

.book-copy li::before {
  content: "+";
  position: absolute;
  left: 0;
  color: var(--rust);
  font-weight: 950;
}

.field-kit {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(280px, .75fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: center;
  padding: clamp(5rem, 10vw, 9rem) clamp(1.3rem, 8vw, 9rem);
  color: var(--paper-light);
  background: linear-gradient(125deg, transparent 0 64%, rgba(213,228,78,.08) 64% 67%, transparent 67%), var(--moss);
}

.kit-status {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .2rem .75rem;
  align-items: center;
  max-width: 37rem;
  margin: 2rem 0 2.5rem;
  padding: 1rem;
  border: 2px dashed rgba(255,255,255,.55);
}

.kit-status > span {
  grid-row: 1 / 3;
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 50%;
  background: var(--sun);
  box-shadow: 0 0 0 .3rem rgba(246,183,74,.18);
}

.kit-status strong {
  text-transform: uppercase;
  letter-spacing: .08em;
}

.kit-status small {
  color: #dce7da;
  line-height: 1.35;
}

.sealed-kit {
  position: relative;
  justify-self: center;
  width: min(100%, 420px);
  padding: 1rem 1rem 1.6rem;
  border: .35rem solid var(--ink);
  color: var(--ink);
  background: #bba878;
  box-shadow: 1rem 1rem 0 rgba(0,0,0,.25);
  transform: rotate(3deg);
}

.sealed-kit img {
  display: block;
  width: 100%;
  max-height: 500px;
  object-fit: cover;
  filter: sepia(.25) saturate(.7);
}

.sealed-kit::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(45deg, transparent 0 18px, rgba(23,35,31,.14) 19px 22px);
}

.sealed-stamp {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 47%;
  width: 72%;
  padding: 1.2rem;
  border: .35rem double var(--rust);
  color: var(--rust);
  background: rgba(238,227,198,.92);
  text-align: center;
  text-transform: uppercase;
  transform: translate(-50%, -50%) rotate(-8deg);
}

.sealed-stamp strong,
.sealed-stamp span { display: block; }
.sealed-stamp strong { font-size: 2rem; }

.sealed-stamp span {
  font: 900 .8rem/1.4 monospace;
  letter-spacing: .1em;
}

.sealed-kit > p {
  position: relative;
  z-index: 2;
  margin: 1rem 0 0;
  font: 800 .68rem/1.4 monospace;
  text-transform: uppercase;
}

.expedition-footer {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 2rem clamp(1.3rem, 5vw, 5rem);
  color: var(--paper-light);
  background: var(--ink);
  font-size: .85rem;
}

.expedition-footer p { margin: 0; }

.expedition-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.expedition-footer a { font-weight: 900; }

@keyframes signalPulse {
  50% { opacity: .4; transform: scale(.8); }
}

@keyframes arrive {
  from {
    opacity: .25;
    transform: scale(1.08);
    filter: saturate(.2) contrast(1.4) blur(5px);
  }
}

@media (max-width: 900px) {
  .manifesto,
  .section-heading,
  .specimen-stage,
  .book-section,
  .field-kit { grid-template-columns: 1fr; }

  .manifesto-mark { width: 5rem; }
  .section-heading { gap: 1rem; }
  .specimen-stack { min-height: min(126vw, 720px); }
  .specimen-card { width: min(75vw, 440px); }
  .specimen-console { max-width: 40rem; }
  .book-art { max-width: 480px; }
}

@media (max-width: 620px) {
  .field-header { align-items: flex-start; }
  .signal { max-width: 9rem; text-align: right; }
  .arrival-copy { padding-bottom: 5rem; }
  .arrival h1 { font-size: clamp(4.6rem, 25vw, 7rem); }
  .scale-note { display: none; }
  .manifesto { gap: 1.4rem; }
  .specimen-lab { padding-left: 1rem; padding-right: 1rem; }
  .specimen-stack { min-height: 128vw; }
  .specimen-card { width: 76vw; border-width: .35rem; }
  .book-art::before { inset: .8rem -.5rem -.7rem .8rem; }
  .evidence-tag { right: -.6rem; }
  .expedition-footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}