:root {
  --paper: #f7efe2;
  --paper-2: #efe5d3;
  --ink: #25231d;
  --ink-soft: #5b554a;
  --coral: #d3785a;
  --coral-deep: #b95f42;
  --sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --serif: "Newsreader", Georgia, serif;
  --hand: "Caveat", "Comic Sans MS", cursive;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 18px/1.6 var(--serif);
  overflow-x: hidden;
}
/* paper grain over everything */
body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 50;
  opacity: .5;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .45  0 0 0 0 .38  0 0 0 0 .28  0 0 0 .22 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
img { max-width: 100%; }
[hidden] { display: none !important; }
section[id] { scroll-margin-top: 64px; } /* keep anchored headings clear of the fixed nav */
a { color: inherit; }
.defs { position: absolute; width: 0; height: 0; overflow: hidden; }


/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px clamp(16px, 4vw, 40px);
  font: 700 13px/1 var(--sans);
  letter-spacing: .18em; text-transform: uppercase;
  background: linear-gradient(var(--paper) 30%, rgba(247, 239, 226, 0));
}
.nav-mark { display: flex; align-items: center; gap: 8px; text-decoration: none; font-size: 16px; font-weight: 900; }
.nav-mark svg { width: 22px; height: 22px; }
.nav-links { display: flex; align-items: center; gap: clamp(10px, 2.4vw, 28px); }
.nav-links a { text-decoration: none; opacity: .75; transition: opacity .2s; }
.nav-links a:hover { opacity: 1; }
@media (max-width: 560px) { .nav-links a:not([href="#token"]) { display: none; } }

/* ---------- hero ---------- */
.hero {
  min-height: 100svh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 70px 20px 40px;
  text-align: center;
}
.hero-logo {
  width: min(640px, 88vw, 70svh);
  height: auto;
  display: block;
  transform-origin: 50% 40%;
  will-change: transform, opacity;
  /* the scan is a touch lighter than the page — feather its edges away */
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent), linear-gradient(transparent, #000 5%, #000 95%, transparent);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent), linear-gradient(transparent, #000 5%, #000 95%, transparent);
  mask-composite: intersect;
}
.hero-sub {
  margin: 8px 0 0;
  font: italic 400 clamp(19px, 2.4vw, 26px)/1.4 var(--serif);
  color: var(--ink-soft);
}
.scroll-cue {
  margin-top: clamp(18px, 4vh, 40px);
  display: inline-flex; flex-direction: column; align-items: center; gap: 4px;
  font: 600 22px/1 var(--hand); text-decoration: none; color: var(--coral-deep);
}
.scroll-cue svg { width: 22px; height: 34px; animation: nudge 1.8s ease-in-out infinite; }
@keyframes nudge { 50% { transform: translateY(7px); } }

/* ---------- intro ---------- */
.intro {
  max-width: 900px; margin: 0 auto;
  padding: 12vh 24px 18vh;
  text-align: center;
}
.epigraph { margin: 0 auto 8vh; max-width: 760px; }
.epigraph p { margin: 0; font: italic 400 clamp(26px, 3.6vw, 42px)/1.25 var(--serif); }
.epigraph .tr { margin-top: 12px; font: 400 clamp(17px, 1.8vw, 21px)/1.6 var(--serif); color: var(--ink-soft); font-style: normal; }
.epigraph cite { display: block; margin-top: 18px; font: 600 12px/1 var(--sans); letter-spacing: .2em; text-transform: uppercase; font-style: normal; color: var(--ink-soft); }
.epigraph.small p { font-size: clamp(22px, 2.6vw, 30px); }
.intro-lede { font-size: clamp(20px, 2.2vw, 26px); line-height: 1.55; margin: 0; }
.intro-lede em { font-style: normal; background: linear-gradient(transparent 62%, rgba(211, 120, 90, .35) 62%); }

/* ---------- story (sticky scroll stage) ---------- */
.story { position: relative; height: 1400vh; }
.stage {
  position: sticky; top: 0;
  height: 100vh; height: 100svh;
  display: grid;
  grid-template-columns: minmax(300px, 38%) 1fr;
  align-items: center;
  overflow: hidden;
}
.scene { width: 100%; height: 100%; display: block; }
.panel { position: relative; height: 100%; padding: 0 0 0 clamp(20px, 6vw, 96px); z-index: 2; }
.chap {
  position: absolute; left: clamp(20px, 6vw, 96px); right: 0; top: 50%;
  transform: translateY(calc(-50% + 26px));
  opacity: 0; visibility: hidden;
  transition: opacity .55s ease, transform .7s cubic-bezier(.2, .7, .2, 1), visibility 0s linear .6s;
}
.chap.on {
  opacity: 1; visibility: visible; transform: translateY(-50%);
  transition: opacity .6s ease .1s, transform .8s cubic-bezier(.2, .7, .2, 1) .1s, visibility 0s;
}
.kicker { font: 700 12px/1 var(--sans); letter-spacing: .22em; text-transform: uppercase; color: var(--coral-deep); }
.year {
  margin: 14px 0 18px;
  font: 900 clamp(40px, 5.6vw, 76px)/.95 var(--sans);
  font-stretch: 112%;
  letter-spacing: -.01em;
}
.year small { display: block; margin-top: 6px; font-size: .32em; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; color: var(--ink-soft); }
.chap h2 { margin: 0 0 14px; font: 800 clamp(22px, 2.3vw, 32px)/1.15 var(--sans); max-width: 26ch; }
.chap p { margin: 0; font-size: clamp(16px, 1.35vw, 19px); line-height: 1.6; color: #3a362e; max-width: 40ch; }
.chap p em { font-style: italic; }
.trait {
  margin-top: 22px;
  display: inline-flex; align-items: baseline; gap: 10px;
  font: 700 11px/1 var(--sans); letter-spacing: .22em; text-transform: uppercase; color: var(--ink-soft);
}
.trait b {
  font: 700 34px/1 var(--hand); letter-spacing: 0; text-transform: none; color: var(--ink);
  background: linear-gradient(transparent 60%, rgba(211, 120, 90, .45) 60%, rgba(211, 120, 90, .45) 88%, transparent 88%) no-repeat;
  background-size: 0% 100%;
  transition: background-size .9s cubic-bezier(.2, .7, .2, 1) .5s;
  padding: 0 4px;
}
.chap.on .trait b { background-size: 100% 100%; }
.chap-final .kicker { font-size: 13px; }
.chap-final h2 { font-size: clamp(30px, 3.6vw, 52px); font-stretch: 110%; margin-top: 16px; }

/* scene strokes */
.scene .ink, .scene .ink path { fill: none; stroke: var(--ink); stroke-width: 9; stroke-linecap: round; stroke-linejoin: round; }
.scene .thin, .scene .ink.thin path, .scene path.thin { stroke-width: 5; }
.scene .draw { stroke-dasharray: 1 1; stroke-dashoffset: 1; }
.scene .coral-fill { fill: var(--coral); }
.scene .paper-fill { fill: var(--paper); }
.scene .ink-fill { fill: var(--ink); }
.scene .tablet { fill: var(--paper-2); }
.scene .tube { fill: var(--paper); }
.scene .fig path { fill: none; stroke: var(--ink); stroke-linecap: round; stroke-linejoin: round; }
.scene .fig .head { fill: var(--ink); }
.scene .fig .helmet { fill: none; stroke: var(--ink); stroke-width: 6; }
.scene .prop { opacity: 0; }
.scene #bison path { stroke-width: 7; }
.scene .hand-note { font: 700 30px var(--hand); fill: var(--coral-deep); }
#wordmark { font: 800 40px var(--sans); letter-spacing: 11px; fill: var(--ink); }
/* flame + embers are moved from JS on the slow "boil" tick — a CSS loop inside the
   filtered scene would force the whole SVG filter to re-rasterise every frame */
#fire .embers circle { fill: var(--coral); }

/* chapter rail */
.rail {
  position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%);
  display: flex; gap: 4px; margin: 0; padding: 6px 10px; list-style: none; z-index: 3;
  background: rgba(247, 239, 226, .82); border-radius: 999px;
}
.rail button {
  position: relative;
  font: 700 10px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft);
  background: none; border: 0; cursor: pointer;
  padding: 18px 8px 4px;
}
.rail button::before {
  content: ""; position: absolute; top: 2px; left: 50%; width: 9px; height: 9px; margin-left: -4.5px;
  border: 2px solid var(--ink); border-radius: 50%; background: var(--paper);
  transition: background .3s, transform .3s;
}
.rail button.on { color: var(--ink); }
.rail button.on::before { background: var(--coral); border-color: var(--coral); transform: scale(1.35); }
.rail button.done::before { background: var(--ink); }

/* ---------- section heads ---------- */
.sec-head { text-align: center; max-width: 820px; margin: 0 auto 64px; }
.eyebrow { margin: 0 0 14px; font: 700 12px/1 var(--sans); letter-spacing: .24em; text-transform: uppercase; color: var(--coral-deep); }
.sec-head h2 { margin: 0; font: 900 clamp(32px, 4.8vw, 62px)/1.05 var(--sans); font-stretch: 108%; letter-spacing: -.01em; }

/* ---------- traits ---------- */
.traits { padding: 20vh clamp(18px, 5vw, 64px) 14vh; }
.grid {
  max-width: 1160px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}
.card {
  background: rgba(255, 252, 246, .55);
  border: 2px solid var(--ink);
  border-radius: 18px 22px 16px 24px / 22px 16px 24px 18px;
  padding: 22px 22px 24px;
}
.card svg { width: 96px; height: 72px; display: block; margin-bottom: 10px; }
.card h3 { margin: 0 0 6px; font: 800 22px/1.1 var(--sans); letter-spacing: .02em; }
.card p { margin: 0; font-size: 17px; line-height: 1.5; color: #3a362e; }
.i-line { fill: none; stroke: var(--ink); stroke-width: 5; stroke-linecap: round; stroke-linejoin: round; }
.i-line.thin { stroke-width: 3.5; }
.i-coral { fill: none; stroke: var(--coral); stroke-width: 5; stroke-linecap: round; }
.i-fill { fill: var(--ink); }
.i-coral-fill { fill: var(--coral); }

/* ---------- voices ---------- */
.voices { padding: 14vh clamp(18px, 5vw, 64px); }
.quotes {
  max-width: 1160px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px;
}
.q { margin: 0; padding: 30px 32px 26px; border-left: 4px solid var(--coral); background: rgba(255, 252, 246, .45); border-radius: 0 16px 16px 0; }
.q-wide { grid-column: 1 / -1; }
.q blockquote { margin: 0; }
.q blockquote p { margin: 0; font: 400 clamp(20px, 1.9vw, 25px)/1.45 var(--serif); }
.q-wide blockquote p { font-size: clamp(22px, 2.3vw, 30px); }
.q figcaption { margin-top: 16px; font: 600 12px/1.4 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); }
.q figcaption a { text-decoration-color: var(--coral); text-underline-offset: 3px; }
.q figcaption i { text-transform: none; letter-spacing: .02em; font: italic 500 15px var(--serif); }
@media (max-width: 760px) { .quotes { grid-template-columns: 1fr; } }

/* ---------- token ---------- */
.token { padding: 16vh 20px 12vh; }
.token-inner {
  max-width: 760px; margin: 0 auto; text-align: center;
  background: var(--ink); color: var(--paper);
  border-radius: 28px 34px 26px 36px / 34px 26px 36px 28px;
  padding: clamp(40px, 7vw, 72px) clamp(22px, 6vw, 64px);
}
.token-spark { width: 92px; height: 92px; animation: spin 26s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.token h2 { margin: 6px 0 0; font: 900 clamp(64px, 11vw, 120px)/1 var(--sans); font-stretch: 118%; letter-spacing: .02em; }
.token-tag { margin: 6px 0 18px; font: 700 34px/1.1 var(--hand); color: var(--coral); }
.token-copy { margin: 0 auto 28px; max-width: 52ch; color: #e7dccb; }
.ca {
  display: flex; align-items: center; gap: 10px; justify-content: center; flex-wrap: wrap;
  margin: 0 auto 26px; padding: 10px 12px 10px 18px; max-width: 560px;
  border: 1.5px dashed rgba(247, 239, 226, .45); border-radius: 12px;
}
.ca-label { font: 800 12px/1 var(--sans); letter-spacing: .2em; color: var(--coral); }
.ca code { font: 500 15px/1.3 ui-monospace, "SF Mono", Menlo, monospace; word-break: break-all; flex: 1; text-align: left; }
.ca-copy, .btn {
  font: 700 13px/1 var(--sans); letter-spacing: .12em; text-transform: uppercase;
  color: var(--paper); background: none; border: 2px solid var(--paper); border-radius: 999px;
  padding: 10px 16px; cursor: pointer; text-decoration: none; display: inline-block;
}
.ca-copy:hover, .btn:hover { background: var(--paper); color: var(--ink); }
.links { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.btn-solid { background: var(--coral); border-color: var(--coral); color: var(--ink); }
.btn-solid:hover { background: var(--paper); border-color: var(--paper); }

/* ---------- tax use ---------- */
.tax { padding: 2vh clamp(18px, 5vw, 64px) 14vh; }
.sec-lede { margin: 20px auto 0; max-width: 56ch; font-size: clamp(18px, 1.7vw, 22px); line-height: 1.5; color: #3a362e; }

/* ---------- footer ---------- */
.foot { max-width: 820px; margin: 0 auto; padding: 4vh 24px 8vh; text-align: center; }
.foot-line { font: 700 26px/1.2 var(--hand); color: var(--coral-deep); margin: 0 0 18px; }
.disclaimer { font: 400 13px/1.6 var(--sans); color: var(--ink-soft); margin: 0; }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .9s cubic-bezier(.2, .7, .2, 1); }
.reveal.in { opacity: 1; transform: none; }
.grid .card.reveal:nth-child(2n) { transition-delay: .08s; }
.grid .card.reveal:nth-child(3n) { transition-delay: .16s; }

/* ---------- small screens: stack the stage ---------- */
@media (max-width: 860px) {
  .stage { grid-template-columns: 1fr; grid-template-rows: 1fr auto; align-items: stretch; }
  .scene { grid-row: 1; height: 100%; min-height: 0; padding-top: 48px; }
  .panel {
    grid-row: 2; height: 42svh; padding: 0;
    background: linear-gradient(rgba(247, 239, 226, 0), var(--paper) 22px);
  }
  .chap { left: 22px; right: 22px; top: 12px; transform: translateY(20px); }
  .chap.on { transform: none; }
  .year { font-size: 40px; margin: 8px 0 10px; }
  .year small { display: inline; margin-left: 8px; }
  .chap h2 { font-size: 21px; margin-bottom: 8px; }
  .chap p { font-size: 15px; line-height: 1.5; }
  .trait { margin-top: 10px; }
  .trait b { font-size: 26px; }
  .rail { bottom: auto; top: 54px; }
  .rail button { padding: 14px 4px 2px; font-size: 0; }
  .rail button::before { top: 2px; }
  .chap-final h2 { font-size: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .scroll-cue svg, #fire .flicker, #fire .embers circle, .spark-glow, .token-spark { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}