:root {
  /* Typography compliance notes: Space Grotesk** in 600–700 weights; Inter** in 400–500 weights for clean legibility and quiet institutional polish.; IBM Plex Mono** for precise archival notation. */
  --paper: #F8F1DF;
  --ink: #101010;
  --walnut: #4A2F1B;
  --blue: #1D4ED8;
  --gold: #D6A625;
  --red: #C7243A;
  --chart: #DDEBFF;
  --graphite: #6B665C;
  --display: "Space Grotesk", "Arial Black", "Inter", system-ui, sans-serif;
  --body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--body);
  overflow-x: hidden;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 20;
  opacity: .22;
  mix-blend-mode: multiply;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(16,16,16,.17) 0 1px, transparent 1.4px),
    radial-gradient(circle at 70% 60%, rgba(74,47,27,.18) 0 1px, transparent 1.3px),
    linear-gradient(90deg, rgba(107,102,92,.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(107,102,92,.06) 1px, transparent 1px);
  background-size: 37px 41px, 53px 47px, 80px 80px, 80px 80px;
  animation: grainDrift 2.8s steps(6) infinite;
}

.bureau-shell {
  min-height: 100vh;
  background:
    radial-gradient(circle at 82% 12%, rgba(221,235,255,.9), transparent 25vw),
    radial-gradient(circle at 18% 84%, rgba(214,166,37,.18), transparent 24vw),
    var(--paper);
}

.type-ledger {
  position: fixed;
  left: -999px;
  top: -999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.scene {
  min-height: 100vh;
  position: relative;
  display: grid;
  overflow: hidden;
  padding: clamp(24px, 4vw, 64px);
  border-bottom: 2px solid rgba(16,16,16,.18);
}

.scene::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(74,47,27,.22);
  pointer-events: none;
}

.scene-opening {
  grid-template-columns: minmax(170px, 24vw) 1fr minmax(160px, 18vw);
  align-items: center;
}

.atlas-margin {
  height: 82vh;
  border-right: 3px solid var(--ink);
  border-left: 1px dashed var(--graphite);
  position: relative;
  transform: rotate(-1.2deg);
}

.margin-rule {
  position: absolute;
  left: 35%;
  top: 4%;
  bottom: 4%;
  width: 1px;
  background: repeating-linear-gradient(to bottom, var(--graphite) 0 8px, transparent 8px 15px);
}

.catalog-tab {
  position: absolute;
  left: -18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  padding: 8px 13px;
  border: 2px solid var(--ink);
  background: var(--chart);
  transform: rotate(-90deg);
}

.tab-one { top: 24%; }
.tab-two { bottom: 22%; background: var(--paper); }

.stamp-card {
  justify-self: start;
  width: min(680px, 70vw);
  margin-left: -4vw;
  padding: clamp(30px, 5vw, 70px);
  border: 4px solid var(--ink);
  border-radius: 2px;
  background: rgba(248,241,223,.87);
  box-shadow: 20px 20px 0 var(--walnut), -12px -12px 0 var(--chart);
  transform: rotate(-2.4deg);
  position: relative;
  z-index: 2;
}

.stamp-card::after {
  content: "";
  position: absolute;
  right: 28px;
  top: 24px;
  width: 112px;
  height: 112px;
  border: 3px double var(--red);
  border-radius: 50%;
  transform: rotate(14deg);
}

.accession, .slip-label, .catalog-number, .route-note, .final-marginalia {
  font-family: var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
}

.accession { color: var(--red); font-size: 13px; margin-bottom: 18px; }

h1, h2, .route-statement {
  font-family: var(--display);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: -.035em;
}

h1 { font-size: clamp(52px, 10vw, 146px); line-height: .8; }
h1 span { display: block; }

.stamp-card p, .destination-card p {
  max-width: 520px;
  font-size: clamp(17px, 2vw, 24px);
  line-height: 1.38;
}

.drift-fragment {
  position: absolute;
  padding: 12px 18px;
  background: var(--paper);
  border: 2px solid var(--ink);
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(14px, 2vw, 26px);
  box-shadow: 7px 7px 0 rgba(16,16,16,.16);
  animation: driftIn 1.4s ease both, floatSlip 4.8s ease-in-out infinite;
}

.frag-house { top: 12%; right: 19%; transform: rotate(3deg); animation-delay: .2s, 1.7s; }
.frag-street { bottom: 18%; left: 29%; transform: rotate(-3deg); animation-delay: .35s, 1.7s; }
.frag-city { top: 21%; left: 9%; transform: rotate(2deg); animation-delay: .5s, 1.7s; }
.frag-code { right: 7%; bottom: 29%; transform: rotate(-1deg); animation-delay: .65s, 1.7s; }

.compass-ring {
  position: absolute;
  border: 2px solid var(--gold);
  border-radius: 50%;
  pointer-events: none;
  animation: rotateRing 18s linear infinite;
}

.compass-ring::before, .compass-ring::after {
  content: "";
  position: absolute;
  inset: 14%;
  border: 1px dashed var(--gold);
  border-radius: 50%;
}

.ring-large { width: 360px; height: 360px; right: -80px; top: 8vh; }
.ring-small { width: 190px; height: 190px; left: 17vw; bottom: 10vh; animation-direction: reverse; }

.postal-arc {
  position: absolute;
  right: 9%;
  top: 47%;
  color: var(--red);
  border-top: 2px solid var(--red);
  border-bottom: 2px solid var(--red);
  padding: 10px 20px;
  font-family: var(--mono);
  letter-spacing: .16em;
  transform: rotate(89deg);
}

.scene-transform {
  grid-template-columns: 1.2fr .8fr;
  align-items: center;
}

.ledger-title {
  max-width: 620px;
  align-self: start;
  margin-top: 8vh;
  transform: rotate(1deg);
}

.ledger-title span {
  font-family: var(--mono);
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: .16em;
}

.ledger-title h2 { font-size: clamp(42px, 6.8vw, 102px); line-height: .88; margin-top: 16px; }

.address-slip {
  position: absolute;
  left: 20%;
  right: 14%;
  top: 35%;
  background: rgba(221,235,255,.72);
  backdrop-filter: blur(1px);
  border: 3px solid var(--ink);
  padding: clamp(22px, 4vw, 52px);
  transform: rotate(-5deg);
  box-shadow: 16px 16px 0 rgba(29,78,216,.18);
}

.slip-pin {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--gold);
  border: 2px solid var(--ink);
  position: absolute;
  top: -12px;
  left: 10%;
}

.slip-label { color: var(--walnut); font-size: 12px; margin-bottom: 18px; }

.address-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  align-items: baseline;
  border-top: 1px solid rgba(16,16,16,.3);
  padding: 12px 0;
}

.address-row span { font-family: var(--mono); color: var(--graphite); letter-spacing: .12em; }
.address-row strong { font-family: var(--display); font-size: clamp(28px, 4.5vw, 66px); line-height: .9; }

.route-column {
  justify-self: end;
  align-self: end;
  display: grid;
  gap: 18px;
  margin-bottom: 11vh;
}

.route-note {
  border: 2px solid var(--ink);
  padding: 14px 20px;
  background: var(--paper);
  box-shadow: 6px 6px 0 rgba(16,16,16,.16);
  transform: rotate(3deg);
}
.route-note.red { color: var(--red); }
.route-note.blue { color: var(--blue); transform: rotate(-2deg); }
.route-note.gold { color: var(--gold); }

.scene-constellation {
  background: linear-gradient(115deg, var(--paper) 0 58%, var(--chart) 58% 100%);
}

.constellation-map {
  position: absolute;
  inset: 7% 5% 14%;
  width: 90%;
  height: 78%;
  filter: url(#paperWarp);
}

.route {
  fill: none;
  stroke-width: 5;
  stroke-linecap: round;
  stroke-dasharray: 22 18;
}

.route-blue { stroke: var(--blue); animation: routeForward 1.4s linear infinite; }
.route-gold { stroke: var(--gold); opacity: .55; stroke-width: 3; animation: routeBackward 1.9s linear infinite; }

.star-node {
  fill: var(--paper);
  stroke: var(--ink);
  stroke-width: 3;
  animation: starPulse 1.8s ease-in-out infinite;
}

.star-node:nth-child(odd) { fill: var(--gold); }
.star-node:nth-child(even) { fill: var(--red); animation-delay: .3s; }

.orbit-label {
  position: absolute;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .11em;
  background: var(--paper);
  border: 2px solid var(--ink);
  padding: 10px 12px;
  box-shadow: 5px 5px 0 rgba(16,16,16,.18);
}
.orbit-label strong { font-family: var(--display); font-size: 22px; letter-spacing: -.02em; }
.label-house { left: 9%; bottom: 20%; transform: rotate(-3deg); }
.label-street { left: 25%; top: 35%; transform: rotate(2deg); }
.label-city { left: 45%; top: 40%; transform: rotate(-2deg); }
.label-region { right: 23%; top: 18%; transform: rotate(3deg); }
.label-code { right: 7%; top: 27%; transform: rotate(-1deg); }

.route-statement {
  position: absolute;
  left: 7%;
  top: 10%;
  max-width: 790px;
  font-size: clamp(36px, 6vw, 88px);
  line-height: .9;
}

.scene-seal {
  align-items: center;
  justify-items: center;
}

.envelope {
  width: min(900px, 84vw);
  min-height: 520px;
  position: relative;
  background: var(--paper);
  border: 4px solid var(--ink);
  box-shadow: 28px 28px 0 var(--walnut), -16px -16px 0 var(--chart);
  transform: rotate(1.7deg);
  overflow: hidden;
}

.envelope::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 2px dashed rgba(16,16,16,.45);
}

.envelope-flap {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 49.5%, rgba(214,166,37,.22) 50%, transparent 50.5%);
}
.flap-right { transform: scaleX(-1); }

.destination-card {
  position: relative;
  z-index: 2;
  margin: 74px auto;
  width: min(650px, 72%);
  padding: 36px;
  border: 3px solid var(--ink);
  background: rgba(221,235,255,.82);
  transform: rotate(-3deg);
}

.catalog-number { color: var(--red); font-size: 12px; }
.destination-card h2 { font-size: clamp(42px, 6vw, 86px); line-height: .9; margin-top: 18px; }

.wax-seal {
  position: absolute;
  right: 11%;
  bottom: 13%;
  z-index: 3;
  width: 124px;
  height: 124px;
  border-radius: 50%;
  border: 3px solid var(--ink);
  background: var(--red);
  color: var(--paper);
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: .07em;
  box-shadow: 8px 8px 0 rgba(16,16,16,.22);
  cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease;
}
.wax-seal:hover, .wax-seal.sealed { transform: scale(1.08) rotate(-8deg); box-shadow: 2px 2px 0 rgba(16,16,16,.3); }

.final-marginalia {
  position: absolute;
  left: 8%;
  bottom: 8%;
  color: var(--graphite);
  font-size: 12px;
}

@keyframes grainDrift { to { background-position: 37px 41px, -53px 47px, 80px 0, 0 80px; } }
@keyframes driftIn { from { opacity: 0; translate: 0 40px; } to { opacity: 1; translate: 0 0; } }
@keyframes floatSlip { 50% { translate: 8px -10px; } }
@keyframes rotateRing { to { transform: rotate(360deg); } }
@keyframes routeForward { to { stroke-dashoffset: -80; } }
@keyframes routeBackward { to { stroke-dashoffset: 80; } }
@keyframes starPulse { 50% { r: 13px; filter: drop-shadow(0 0 12px rgba(214,166,37,.9)); } }

@media (max-width: 800px) {
  .scene { padding: 22px; }
  .scene-opening, .scene-transform { grid-template-columns: 1fr; }
  .atlas-margin { opacity: .25; position: absolute; left: 22px; top: 7vh; }
  .stamp-card { width: 86vw; margin-left: 5vw; }
  .address-slip { left: 7%; right: 7%; top: 36%; }
  .address-row { grid-template-columns: 1fr; gap: 5px; }
  .route-column { display: none; }
  .route-statement { font-size: 40px; }
  .orbit-label { font-size: 10px; }
  .destination-card { width: 82%; margin-top: 54px; }
}