:root {
  /* Design typography tokens: resolving Mono** Mono* 400/500 weights typewriter-effect sequences Inter** Inter* 500/600 Source Serif 4** 4* warm field-journal paragraphs prose fragments. */
  --canopy: #07130D;
  --moss: #183C2B;
  --fern: #5FA36B;
  --gold: #C2A85E;
  --paper: #E8D9B7;
  --fox: #8A6A3D;
  --ink: #16243A;
  --star: #F5EFD8;
  --display: "Fraunces", Georgia, serif;
  --mono: "IBM Plex Mono", "Courier New", monospace;
  --serif: "Source Serif 4", Georgia, serif;
  --ui: "Inter", Arial, sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--canopy);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--paper);
  background:
    radial-gradient(circle at 18% 12%, rgba(95, 163, 107, 0.12), transparent 24rem),
    radial-gradient(circle at 82% 36%, rgba(22, 36, 58, 0.62), transparent 31rem),
    linear-gradient(180deg, #07130D 0%, #0a1a11 38%, #07130D 100%);
  font-family: var(--serif);
  overflow-x: hidden;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 40;
  opacity: 0.18;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(245, 239, 216, 0.12) 0 1px, transparent 1px),
    radial-gradient(circle at 70% 60%, rgba(194, 168, 94, 0.10) 0 1px, transparent 1px),
    linear-gradient(115deg, transparent 0 48%, rgba(232, 217, 183, 0.04) 49% 51%, transparent 52% 100%);
  background-size: 7px 7px, 11px 11px, 100% 100%;
  mix-blend-mode: screen;
}

.forest-shadow {
  position: fixed;
  top: -10vh;
  bottom: -10vh;
  width: 30vw;
  pointer-events: none;
  opacity: 0.42;
  filter: blur(1px);
  background: repeating-linear-gradient(90deg, transparent 0 28px, rgba(24, 60, 43, 0.72) 30px 36px, transparent 38px 70px);
  z-index: 1;
}

.forest-shadow-a { left: -8vw; transform: rotate(-3deg); }
.forest-shadow-b { right: -10vw; transform: rotate(4deg); opacity: 0.34; }

.chapter-nav {
  position: fixed;
  left: 1.3rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 30;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  font: 600 0.62rem/1 var(--ui);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.chapter-nav a {
  color: rgba(245, 239, 216, 0.48);
  text-decoration: none;
  writing-mode: vertical-rl;
  transition: color 500ms ease, transform 500ms ease;
}

.chapter-nav a.active,
.chapter-nav a:hover {
  color: var(--gold);
  transform: translateX(3px);
}

.root-scroll {
  position: relative;
  z-index: 2;
}

.root-thread {
  position: fixed;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 5px;
  transform: translateX(-50%);
  z-index: 8;
  background:
    linear-gradient(90deg, transparent, rgba(95, 163, 107, 0.22), transparent),
    repeating-linear-gradient(180deg, rgba(194, 168, 94, 0.14) 0 18px, rgba(95, 163, 107, 0.28) 20px 24px, rgba(7, 19, 13, 0.2) 26px 42px);
  box-shadow: 0 0 18px rgba(95, 163, 107, 0.18);
  border-radius: 999px;
}

.root-thread::before,
.root-thread::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 26px;
  height: 100%;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(95, 163, 107, 0.13), transparent 68%);
}

.root-progress {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 0%;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--fern), rgba(95, 163, 107, 0.48), var(--gold));
  box-shadow: 0 0 22px rgba(95, 163, 107, 0.82), 0 0 60px rgba(95, 163, 107, 0.24);
}

.traveler {
  position: absolute;
  left: 50%;
  top: 0;
  width: 16px;
  height: 16px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--fern);
  box-shadow: 0 0 18px var(--fern), 0 0 2px var(--star) inset;
}

.chapter {
  min-height: 100vh;
  position: relative;
  display: grid;
  grid-template-columns: minmax(1rem, 1fr) minmax(250px, 430px) 90px minmax(250px, 430px) minmax(1rem, 1fr);
  align-items: center;
  gap: 2.4rem;
  padding: 7vh 4vw;
  isolation: isolate;
}

.chapter::before {
  content: attr(data-chapter);
  position: absolute;
  top: 12vh;
  left: calc(50% + 32px);
  font: 500 0.72rem/1 var(--mono);
  letter-spacing: 0.24em;
  color: rgba(194, 168, 94, 0.64);
}

.chapter::after {
  content: "";
  position: absolute;
  inset: 8vh 8vw;
  background: radial-gradient(circle at 50% 50%, rgba(24, 60, 43, 0.16), transparent 62%);
  z-index: -1;
}

.chapter-node {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 22px;
  height: 22px;
  transform: translate(-50%, -50%);
  z-index: 11;
  border-radius: 50%;
  border: 1px solid var(--gold);
  background: radial-gradient(circle, var(--star) 0 2px, var(--fern) 3px 6px, var(--moss) 7px 100%);
  box-shadow: 0 0 28px rgba(95, 163, 107, 0.56);
}

.left-paper, .left-visual { grid-column: 2; }
.right-paper, .right-visual { grid-column: 4; }

.hero-wordmark {
  grid-column: 2 / 5;
  justify-self: center;
  text-align: center;
  margin-top: -18vh;
}

.typed-word {
  min-height: 1.4rem;
  margin: 0 0 0.4rem;
  font: 500 clamp(0.8rem, 1.6vw, 1.05rem)/1.2 var(--mono);
  letter-spacing: 0.12em;
  color: var(--fern);
  text-shadow: 0 0 16px rgba(95, 163, 107, 0.48);
}

.typed-word::after,
.type-note.typing::after {
  content: "";
  display: inline-block;
  width: 0.55em;
  height: 1.05em;
  margin-left: 0.18em;
  vertical-align: -0.12em;
  background: var(--fern);
  box-shadow: 0 0 12px var(--fern);
  animation: blink 850ms steps(1) infinite;
}

.resolved-word {
  margin: 0;
  font: 700 clamp(3.5rem, 11vw, 11rem)/0.82 var(--display);
  letter-spacing: -0.075em;
  color: var(--star);
  opacity: 0;
  transform: translateY(16px) scale(0.985);
  text-shadow: 0 20px 55px rgba(0, 0, 0, 0.58), 0 0 38px rgba(194, 168, 94, 0.13);
  animation: resolveWord 1.6s ease 2.2s forwards;
}

.paper-slip,
.scene-card,
.paper-disk,
.archive-folder {
  position: relative;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 28%, rgba(138, 106, 61, 0.20) 0 2px, transparent 3px 100%),
    radial-gradient(circle at 78% 18%, rgba(194, 168, 94, 0.18), transparent 5rem),
    linear-gradient(135deg, #F5EFD8, var(--paper) 58%, #d8c799);
  border: 1px solid rgba(194, 168, 94, 0.42);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.44), 0 0 0 1px rgba(245, 239, 216, 0.08) inset;
  transform: rotate(var(--tilt, -1.5deg));
  clip-path: polygon(1% 4%, 97% 1%, 100% 88%, 95% 100%, 4% 98%, 0 82%);
}

.scene-card,
.archive-folder {
  padding: clamp(1.6rem, 4vw, 3.2rem);
  max-width: 430px;
}

.paper-slip {
  align-self: end;
  padding: 1.25rem 1.45rem;
  max-width: 340px;
  margin-top: 31vh;
  --tilt: -3deg;
}

.paper-slip p,
.scene-card p,
.paper-disk p,
.archive-folder p {
  font: 500 clamp(1.05rem, 1.9vw, 1.34rem)/1.42 var(--serif);
  margin: 0;
}

.pin {
  position: absolute;
  left: 1rem;
  top: 0.7rem;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(138, 106, 61, 0.18), 0 3px 9px rgba(0,0,0,0.28);
}

.moon-stamp {
  position: absolute;
  right: 8vw;
  bottom: 17vh;
  font: 500 0.68rem/1 var(--mono);
  letter-spacing: 0.18em;
  color: rgba(245, 239, 216, 0.52);
  border: 1px solid rgba(194, 168, 94, 0.34);
  border-radius: 50%;
  padding: 2.3rem 1.4rem;
  transform: rotate(14deg);
}

.specimen-code {
  display: block;
  margin-bottom: 1.1rem;
  font: 500 0.68rem/1.35 var(--mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fox);
}

h2 {
  margin: 0 0 1rem;
  font: 700 clamp(3rem, 7vw, 6.4rem)/0.82 var(--display);
  letter-spacing: -0.06em;
  color: var(--moss);
  text-shadow: 2px 2px 0 rgba(194, 168, 94, 0.16);
}

.chapter.in-view h2 {
  animation: inkSettle 1.2s cubic-bezier(.2,.9,.2,1) both;
}

.quiet-object {
  appearance: none;
  margin-top: 1.35rem;
  border: 1px solid rgba(138, 106, 61, 0.54);
  border-radius: 999px;
  padding: 0.72rem 1rem;
  color: var(--ink);
  background: rgba(245, 239, 216, 0.28);
  font: 600 0.66rem/1 var(--ui);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 350ms ease, background 350ms ease;
}

.quiet-object:hover,
.quiet-object.open {
  transform: translateY(-2px);
  background: rgba(194, 168, 94, 0.24);
}

.root-diagram {
  height: 430px;
  position: relative;
  filter: drop-shadow(0 0 24px rgba(95, 163, 107, 0.24));
}

.root-diagram span {
  position: absolute;
  left: 50%;
  top: 6%;
  width: 2px;
  height: 82%;
  background: linear-gradient(var(--fern), transparent);
  transform-origin: top;
  border-radius: 999px;
}

.root-diagram span:nth-child(1) { transform: rotate(-23deg); }
.root-diagram span:nth-child(2) { transform: rotate(-7deg); height: 94%; }
.root-diagram span:nth-child(3) { transform: rotate(11deg); height: 88%; }
.root-diagram span:nth-child(4) { transform: rotate(29deg); top: 18%; height: 64%; }

.root-diagram span::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 12px;
  height: 12px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: var(--fern);
  box-shadow: 0 0 18px var(--fern);
}

.paper-disk {
  width: min(34vw, 420px);
  min-height: 420px;
  border-radius: 50%;
  padding: 4.4rem 3.2rem;
  clip-path: circle(49% at 50% 50%);
  --tilt: 5deg;
}

.paper-disk::after {
  content: "";
  position: absolute;
  inset: 15%;
  border: 1px solid rgba(138, 106, 61, 0.35);
  border-radius: 50%;
  box-shadow: 0 0 0 3.5rem rgba(138, 106, 61, 0.05);
}

.constellation {
  overflow: visible;
}

.constellation path,
.constellation .orbit {
  fill: none;
  stroke: var(--gold);
  stroke-width: 1.25;
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
  opacity: 0.7;
}

.constellation circle {
  fill: var(--star);
  opacity: 0;
  filter: drop-shadow(0 0 8px var(--gold));
}

.chapter.in-view .constellation path,
.chapter.in-view .constellation .orbit,
.constellation.in-view path,
.constellation.in-view .orbit {
  animation: drawConstellation 5.5s ease forwards;
}

.chapter.in-view .constellation circle,
.constellation.in-view circle {
  animation: starAppear 4s ease forwards;
}

.constellation-hero {
  position: absolute;
  right: 10vw;
  top: 13vh;
  width: 260px;
  opacity: 0.72;
}

.star-wheel {
  width: min(34vw, 420px);
  animation: slowTurn 46s linear infinite;
}

.typed-stack {
  display: grid;
  gap: 1rem;
  transform: rotate(-2deg);
}

.type-note {
  min-height: 3.25rem;
  margin: 0;
  padding: 1rem 1.1rem;
  color: var(--ink);
  background: rgba(232, 217, 183, 0.92);
  border-left: 3px solid var(--fern);
  font: 500 0.8rem/1.45 var(--mono);
  box-shadow: 0 16px 44px rgba(0,0,0,0.28);
}

.repair-note { --tilt: 2deg; }
.seed-envelope { --tilt: 2.4deg; }
.archive-folder { --tilt: -2deg; }
.renewal-card { --tilt: 1.2deg; }

.archive-folder::before {
  content: "";
  position: absolute;
  left: 1.2rem;
  top: -1.1rem;
  width: 45%;
  height: 2rem;
  background: #d8c799;
  border: 1px solid rgba(194, 168, 94, 0.38);
  border-bottom: 0;
  clip-path: polygon(0 0, 72% 0, 100% 100%, 0 100%);
}

.catalog {
  display: grid;
  gap: 1rem;
  font: 500 0.74rem/1.3 var(--mono);
  letter-spacing: 0.13em;
  color: rgba(245, 239, 216, 0.74);
  text-transform: uppercase;
}

.catalog span {
  padding: 0.9rem 1rem;
  border: 1px solid rgba(194, 168, 94, 0.26);
  background: rgba(22, 36, 58, 0.28);
  box-shadow: 0 0 35px rgba(95, 163, 107, 0.08) inset;
}

.orbit-ring {
  position: relative;
  width: min(38vw, 430px);
  aspect-ratio: 1;
}

.ring {
  position: absolute;
  inset: var(--inset);
  border: 1px solid rgba(194, 168, 94, 0.54);
  border-radius: 47% 53% 50% 50%;
  box-shadow: 0 0 30px rgba(95, 163, 107, 0.14), inset 0 0 28px rgba(95, 163, 107, 0.08);
  animation: slowTurn 30s linear infinite reverse;
}
.r1 { --inset: 3%; }
.r2 { --inset: 18%; animation-duration: 38s; }
.r3 { --inset: 31%; animation-direction: normal; }
.r4 { --inset: 44%; border-color: var(--fern); box-shadow: 0 0 24px rgba(95, 163, 107, 0.48); }

.field-note {
  position: fixed;
  left: 50%;
  bottom: 1.4rem;
  transform: translateX(-50%);
  z-index: 29;
  width: min(620px, calc(100vw - 2rem));
  min-height: 3.2rem;
  padding: 0.9rem 1.2rem 0.9rem 2.4rem;
  border: 1px solid rgba(194, 168, 94, 0.24);
  background: rgba(7, 19, 13, 0.74);
  color: rgba(245, 239, 216, 0.82);
  font: 500 0.74rem/1.45 var(--mono);
  letter-spacing: 0.04em;
  box-shadow: 0 18px 50px rgba(0,0,0,0.34);
}

.field-note p { margin: 0; }
.field-note .cursor {
  position: absolute;
  left: 1rem;
  top: 1.05rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fern);
  box-shadow: 0 0 14px var(--fern);
  animation: blink 1.1s steps(1) infinite;
}

.chapter.revealed .scene-card,
.chapter.revealed .paper-disk,
.chapter.revealed .archive-folder,
.chapter.revealed .paper-slip,
.chapter.revealed .left-visual,
.chapter.revealed .right-visual {
  animation: paperRise 1.1s ease both;
}

@keyframes blink { 50% { opacity: 0.16; } }
@keyframes resolveWord { to { opacity: 1; transform: translateY(0) scale(1); } }
@keyframes inkSettle {
  0% { opacity: 0; transform: translateY(14px); letter-spacing: 0.01em; text-shadow: 12px 16px 0 rgba(24,60,43,0.08); }
  100% { opacity: 1; transform: translateY(0); letter-spacing: -0.06em; }
}
@keyframes drawConstellation { to { stroke-dashoffset: 0; } }
@keyframes starAppear { 30%, 100% { opacity: 1; } }
@keyframes slowTurn { to { transform: rotate(360deg); } }
@keyframes paperRise {
  from { opacity: 0; translate: 0 24px; }
  to { opacity: 1; translate: 0 0; }
}

@media (max-width: 820px) {
  .chapter-nav { display: none; }
  .chapter {
    grid-template-columns: 1fr 48px 1fr;
    gap: 1rem;
    padding: 8vh 1rem 14vh;
  }
  .left-paper, .left-visual, .right-paper, .right-visual { grid-column: 1 / 4; width: min(100%, 460px); justify-self: center; }
  .hero-wordmark { grid-column: 1 / 4; margin-top: -22vh; }
  .paper-slip { margin-top: 22vh; }
  .paper-disk { width: min(92vw, 380px); min-height: 380px; }
  .star-wheel, .orbit-ring { width: min(88vw, 390px); }
  .constellation-hero { width: 190px; right: 1rem; top: 18vh; }
  .root-thread { width: 4px; }
}