:root {
  /* Design typography references: IBM Plex Mono* Mono** from Google Fonts for coordinates; Space Grotesk* Grotesk** from Google Fonts for the `gabs.games` wordmark. */
  --black: #07110F;
  --violet: #7B61FF;
  --mint: #8CFFB8;
  --cyan: #45E6FF;
  --gold: #F4D35E;
  --cream: #ECF8D8;
  --fern: #123C2F;
  --display: "Space Grotesk", Inter, system-ui, sans-serif;
  --body: "Literata", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--black); }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--cream);
  background: radial-gradient(circle at 52% 15%, rgba(18, 60, 47, .72), transparent 36%), var(--black);
  font-family: var(--body);
}

#growth-field, .aurora-field, .grain, .visor-hud { position: fixed; inset: 0; pointer-events: none; }
#growth-field { z-index: 0; opacity: .68; mix-blend-mode: screen; }
.aurora-field {
  z-index: 1;
  background:
    radial-gradient(ellipse at 18% 18%, rgba(123, 97, 255, .54), transparent 34%),
    radial-gradient(ellipse at 72% 12%, rgba(69, 230, 255, .42), transparent 35%),
    radial-gradient(ellipse at 45% 72%, rgba(140, 255, 184, .28), transparent 42%);
  filter: blur(28px) saturate(128%);
  animation: auroraDrift 18s ease-in-out infinite alternate;
}
.grain {
  z-index: 2;
  opacity: .15;
  background-image: repeating-radial-gradient(circle at 30% 40%, rgba(236,248,216,.32) 0 1px, transparent 1px 4px);
  mix-blend-mode: overlay;
}

.visor-hud { z-index: 20; border: 1px solid rgba(140,255,184,.18); margin: 18px; border-radius: 38px; }
.visor-hud::before, .visor-hud::after {
  content: ""; position: absolute; inset: 28px; border-radius: 34% 66% 55% 45% / 48% 31% 69% 52%;
  border: 1px solid rgba(69,230,255,.18); transform: rotate(-4deg);
}
.visor-hud::after { inset: 46px; border-color: rgba(140,255,184,.13); transform: rotate(7deg); }
.hud-corner { position: absolute; font-family: var(--mono); color: var(--mint); font-size: 10px; letter-spacing: .18em; text-transform: uppercase; }
.hud-corner--tl { top: 30px; left: 36px; }.hud-corner--tr { top: 30px; right: 36px; }.hud-corner--bl { bottom: 30px; left: 36px; }.hud-corner--br { bottom: 30px; right: 36px; }
.reticle { position: absolute; width: 152px; height: 152px; border: 1px solid rgba(244,211,94,.28); border-radius: 47% 53% 48% 52%; }
.reticle::before { content: ""; position: absolute; inset: 22px; border: 1px dashed rgba(140,255,184,.24); border-radius: inherit; }
.reticle--one { left: 8vw; top: 17vh; animation: spinSlow 22s linear infinite; }.reticle--two { right: 12vw; bottom: 16vh; animation: spinSlow 28s linear infinite reverse; }

.chapter-nav { position: fixed; z-index: 30; right: 36px; top: 50%; transform: translateY(-50%); display: grid; gap: 14px; }
.nav-glyph { width: 44px; height: 44px; border-radius: 50% 46% 54% 50%; display: grid; place-items: center; text-decoration: none; color: var(--cream); font: 600 11px/1 var(--mono); border: 1px solid rgba(236,248,216,.24); background: rgba(18,60,47,.32); backdrop-filter: blur(12px); transition: .5s ease; }
.nav-glyph.is-active, .nav-glyph:hover { color: var(--black); background: var(--mint); box-shadow: 0 0 28px rgba(140,255,184,.42); transform: translateX(-8px) rotate(-8deg); }

.expedition { position: relative; z-index: 5; }
.pane { position: relative; min-height: 100vh; overflow: hidden; padding: 9vh 8vw; display: grid; align-items: center; }
.pane::before { content: attr(data-chapter); position: absolute; left: 8vw; top: 8vh; color: rgba(140,255,184,.36); font: 600 11px var(--mono); letter-spacing: .4em; }
.leaf-grid { position: absolute; inset: 0; opacity: .25; background: linear-gradient(110deg, transparent 48%, rgba(140,255,184,.25), transparent 52%), linear-gradient(30deg, transparent 49%, rgba(69,230,255,.14), transparent 51%); background-size: 210px 210px, 310px 310px; mask-image: radial-gradient(ellipse at center, black, transparent 70%); }

.blob { position: absolute; border-radius: 42% 58% 63% 37% / 55% 36% 64% 45%; background: linear-gradient(135deg, rgba(18,60,47,.82), rgba(123,97,255,.22)); border: 1px solid rgba(140,255,184,.2); box-shadow: inset 0 0 90px rgba(69,230,255,.12), 0 28px 100px rgba(0,0,0,.4); backdrop-filter: blur(18px); animation: morph 13s ease-in-out infinite alternate; }
.blob--hero { width: min(68vw, 880px); height: min(62vh, 620px); right: 4vw; top: 18vh; }
.blob--terrain { width: min(63vw, 790px); height: 58vh; right: 9vw; top: 20vh; }
.pod { position: absolute; border: 1px solid rgba(236,248,216,.32); background: rgba(236,248,216,.08); backdrop-filter: blur(8px); }
.pod--dice { width: 94px; height: 94px; border-radius: 46% 54% 44% 56%; right: 22%; top: 20%; display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; padding: 22px; animation: float 7s ease-in-out infinite; }
.pod--dice i { border-radius: 50%; background: var(--gold); box-shadow: 0 0 15px var(--gold); }
.pod--seed { width: 150px; height: 78px; border-radius: 50%; left: 18%; bottom: 24%; transform: rotate(-18deg); }
.pod--seed span { position: absolute; inset: 24px 42px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 28px var(--mint); }

.hero-copy { position: relative; max-width: 940px; align-self: center; }
.specimen-tag { color: var(--mint); font: 600 11px/1.6 var(--mono); letter-spacing: .22em; text-transform: uppercase; margin: 0 0 18px; }
.wordmark, h2 { font-family: var(--display); font-weight: 700; line-height: .88; margin: 0; letter-spacing: var(--track, -.055em); text-wrap: balance; text-shadow: 0 0 38px rgba(123,97,255,.45); }
.wordmark { font-size: clamp(74px, 15vw, 218px); }
h2 { font-size: clamp(56px, 9vw, 142px); max-width: 900px; }
.rule-line { max-width: 620px; font: 500 clamp(22px, 3vw, 43px)/1.1 var(--display); color: var(--cream); margin: 28px 0 0; }
.field-note { position: absolute; max-width: 310px; padding: 22px; border: 1px solid rgba(140,255,184,.26); border-radius: 28px 48px 32px 54px; color: rgba(236,248,216,.82); background: rgba(7,17,15,.48); backdrop-filter: blur(18px); font-size: 15px; line-height: 1.55; }
.field-note span { display: block; color: var(--gold); font: 600 10px var(--mono); letter-spacing: .22em; margin-bottom: 10px; }
.note--hero { right: 10vw; bottom: 13vh; }.note--right { right: 8vw; bottom: 14vh; }.note--bloom { left: 11vw; bottom: 13vh; }
.lab-action { position: absolute; left: 8vw; bottom: 11vh; border: 1px solid rgba(140,255,184,.5); border-radius: 999px; padding: 15px 24px; background: rgba(140,255,184,.08); color: var(--cream); font: 600 12px var(--mono); letter-spacing: .16em; text-transform: uppercase; cursor: pointer; box-shadow: 0 0 35px rgba(140,255,184,.16); transition: .35s ease; }
.lab-action:hover { background: var(--mint); color: var(--black); transform: translateY(-4px); }

.chapter-copy { position: relative; max-width: 560px; z-index: 3; }
.chapter-copy p:not(.specimen-tag) { font-size: clamp(18px, 2vw, 25px); line-height: 1.55; color: rgba(236,248,216,.86); }
.copy--left { margin-left: 3vw; }.copy--right { margin-left: auto; margin-right: 4vw; }.copy--archive { margin-inline: auto; text-align: center; }
.branch-map { position: absolute; inset: 8%; width: 84%; height: 84%; overflow: visible; }
.branch-map path { fill: none; stroke: var(--mint); stroke-width: 3; stroke-linecap: round; filter: drop-shadow(0 0 12px rgba(140,255,184,.8)); stroke-dasharray: 1; stroke-dashoffset: var(--pathOffset, 1); }
.branch-path--alt { stroke: var(--cyan); opacity: .75; }.branch-map circle { fill: var(--black); stroke: var(--gold); stroke-width: 3; }
.orbit { position: absolute; right: 14vw; top: 18vh; width: 360px; height: 360px; border: 1px dashed rgba(69,230,255,.28); border-radius: 45% 55% 50% 50%; animation: spinSlow 30s linear infinite; }
.orbit span { position: absolute; color: var(--mint); font: 600 10px var(--mono); letter-spacing: .18em; text-transform: uppercase; background: rgba(7,17,15,.6); padding: 8px 12px; border-radius: 999px; }
.orbit span:nth-child(1){left:42%;top:-5%}.orbit span:nth-child(2){right:-7%;top:42%}.orbit span:nth-child(3){left:30%;bottom:-5%}.orbit span:nth-child(4){left:-8%;top:38%}

.loop-chamber { position: absolute; left: 7vw; top: 15vh; width: min(62vw, 740px); height: 68vh; border-radius: 52% 48% 43% 57% / 38% 60% 40% 62%; background: radial-gradient(circle at 45% 45%, rgba(244,211,94,.15), transparent 18%), linear-gradient(135deg, rgba(18,60,47,.76), rgba(69,230,255,.13)); border: 1px solid rgba(236,248,216,.16); animation: morph 14s ease-in-out infinite alternate-reverse; }
.loop-ring { position: absolute; border-radius: 50%; border: 1px solid rgba(140,255,184,.42); box-shadow: 0 0 28px rgba(69,230,255,.22); }
.ring--a { inset: 15%; animation: spinSlow 16s linear infinite; }.ring--b { inset: 25% 12%; animation: spinSlow 20s linear infinite reverse; }.ring--c { inset: 34% 28%; border-color: rgba(244,211,94,.48); }
.pressed-card { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%) rotate(-6deg); padding: 26px 30px; border-radius: 24px; background: rgba(236,248,216,.12); color: var(--cream); font: 600 18px var(--mono); letter-spacing: .08em; box-shadow: inset 0 0 30px rgba(236,248,216,.08); }
.lab-action--trace { left: auto; right: 13vw; }

.archive-water { position: absolute; inset: 14vh 8vw; border-radius: 42% 58% 51% 49% / 55% 42% 58% 45%; background: linear-gradient(160deg, rgba(123,97,255,.2), rgba(18,60,47,.72), rgba(69,230,255,.12)); border: 1px solid rgba(140,255,184,.18); filter: drop-shadow(0 40px 80px rgba(0,0,0,.45)); }
.fragment { position: absolute; padding: 15px 18px; color: rgba(236,248,216,.88); border: 1px solid rgba(236,248,216,.2); border-radius: 18px 28px 16px 32px; background: rgba(7,17,15,.45); font: 500 13px var(--mono); letter-spacing: .08em; animation: float 8s ease-in-out infinite; }
.fragment--one { left: 14%; top: 22%; }.fragment--two { right: 14%; top: 28%; animation-delay: -2s; }.fragment--three { left: 26%; bottom: 22%; animation-delay: -4s; }.fragment--four { right: 24%; bottom: 18%; animation-delay: -1s; }
.lab-action--archive { position: static; margin-top: 20px; }

@keyframes auroraDrift { from { transform: translate3d(-3%, -2%, 0) scale(1); } to { transform: translate3d(3%, 4%, 0) scale(1.08); } }
@keyframes morph { 0% { border-radius: 42% 58% 63% 37% / 55% 36% 64% 45%; } 100% { border-radius: 61% 39% 44% 56% / 40% 58% 42% 60%; } }
@keyframes spinSlow { to { transform: rotate(360deg); } }
@keyframes float { 0%,100% { transform: translateY(0) rotate(-4deg); } 50% { transform: translateY(-18px) rotate(5deg); } }

@media (max-width: 780px) {
  .pane { padding: 12vh 7vw; }
  .chapter-nav { right: 16px; }
  .field-note, .orbit { display: none; }
  .blob--hero, .blob--terrain, .loop-chamber, .archive-water { width: 88vw; left: 6vw; right: auto; opacity: .72; }
  .copy--right, .copy--left { margin: 0; }
  .wordmark { font-size: clamp(62px, 21vw, 120px); }
}