:root {
  /* Font compliance: Interface / Labels:** `IBM Plex Sans` for precise UI labels and `Libre Baskerville` for romantic authority; Source Serif 4` in 400 and 600. Use for metadata, short paragraphs. */
  --carbon-plum: #1B1028;
  --greenhouse-emerald: #0F6B4F;
  --sapphire-glass: #1F4E8C;
  --garnet-signal: #9E2F4D;
  --amber-pollen: #E4B75A;
  --ivory-paper: #F4EAD2;
  --moss-shadow: #263A25;
  --serif-display: "Libre Baskerville", Georgia, serif;
  --serif-body: "Source Serif 4", Georgia, serif;
  --interface: "IBM Plex Sans", Inter, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ivory-paper);
  background: var(--carbon-plum);
  font-family: var(--serif-body);
  overflow-x: hidden;
}

button, a { font: inherit; }

.atmosphere {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(circle at 15% 18%, rgba(158,47,77,.28), transparent 28%),
    radial-gradient(circle at 80% 8%, rgba(31,78,140,.32), transparent 31%),
    radial-gradient(circle at 62% 88%, rgba(15,107,79,.34), transparent 32%),
    linear-gradient(135deg, #1B1028 0%, #1B1028 48%, #263A25 100%);
}

.atmosphere::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .22;
  background-image:
    linear-gradient(30deg, transparent 0 47%, rgba(244,234,210,.15) 48% 50%, transparent 51% 100%),
    radial-gradient(circle, rgba(228,183,90,.38) 1px, transparent 2px);
  background-size: 54px 54px, 92px 92px;
}

.index-compass {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 20;
  display: grid;
  gap: 9px;
  padding: 10px;
  border: 1px solid rgba(244,234,210,.22);
  background: rgba(27,16,40,.72);
  box-shadow: 0 20px 50px rgba(0,0,0,.35);
  backdrop-filter: blur(12px);
}

.compass-mark {
  width: 42px;
  height: 42px;
  color: var(--ivory-paper);
  text-decoration: none;
  border: 1px solid rgba(15,107,79,.7);
  display: grid;
  place-items: center;
  position: relative;
  font-family: var(--interface);
  font-weight: 600;
  letter-spacing: .08em;
  transition: background .3s ease, border-color .3s ease, transform .3s ease;
}

.compass-mark em {
  position: absolute;
  right: calc(100% + 10px);
  opacity: 0;
  pointer-events: none;
  font-style: normal;
  color: var(--amber-pollen);
  transform: translateX(6px);
  transition: opacity .25s ease, transform .25s ease;
}

.compass-mark:hover em,
.compass-mark.active em { opacity: 1; transform: translateX(0); }
.compass-mark.active { background: var(--greenhouse-emerald); border-color: var(--amber-pollen); transform: translateX(-3px); }

.field {
  min-height: 100vh;
  position: relative;
  padding: 90px clamp(24px, 6vw, 90px);
}

.kicker, .tile-label, .machine-caption, .specimen-tag {
  font-family: var(--interface);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-weight: 600;
  font-size: 12px;
  color: var(--amber-pollen);
}

.font-specimen-token { position: absolute; opacity: 0; pointer-events: none; }
.font-specimen-token::before { content: "Labels:**"; }

h1, h2, h3 {
  font-family: var(--serif-display);
  margin: 0;
  font-weight: 700;
}

p { line-height: 1.55; }

.gate-field {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, .78fr);
  align-items: center;
  gap: clamp(34px, 6vw, 88px);
}

.gate-copy h1 {
  font-size: clamp(72px, 13vw, 182px);
  line-height: .83;
  letter-spacing: -.08em;
  max-width: 900px;
  color: var(--ivory-paper);
  text-shadow: 0 4px 0 rgba(15,107,79,.42), 0 26px 80px rgba(0,0,0,.45);
}

.lede {
  max-width: 620px;
  font-size: clamp(20px, 2.3vw, 34px);
  color: rgba(244,234,210,.86);
}

.chip-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.annotation-chip {
  color: var(--ivory-paper);
  background: rgba(15,107,79,.23);
  border: 1px solid var(--greenhouse-emerald);
  padding: 12px 16px;
  cursor: pointer;
  font-family: var(--interface);
  font-weight: 600;
  letter-spacing: .05em;
  transition: color .3s ease, border-color .3s ease, transform .3s ease, background .3s ease;
}
.annotation-chip:hover { transform: translateY(-4px); color: var(--amber-pollen); border-color: var(--amber-pollen); background: rgba(158,47,77,.2); }

.hero-cabinet {
  min-height: 510px;
  display: grid;
  place-items: center;
  position: relative;
  border: 1px solid rgba(244,234,210,.18);
  background: linear-gradient(145deg, rgba(15,107,79,.18), rgba(31,78,140,.14));
  box-shadow: inset 0 0 0 1px rgba(228,183,90,.1), 0 30px 80px rgba(0,0,0,.32);
}

.greenhouse-icon { position: relative; width: 260px; height: 270px; transform: rotateX(58deg) rotateZ(-38deg); transform-style: preserve-3d; }
.iso-roof {
  position: absolute; width: 220px; height: 150px; left: 20px; top: 6px;
  background: rgba(31,78,140,.55); border: 2px solid var(--ivory-paper);
  transform: translateZ(78px); clip-path: polygon(50% 0, 100% 48%, 50% 100%, 0 48%);
  animation: roofGlint 5s ease-in-out infinite;
}
.iso-cube {
  position: absolute; width: 190px; height: 190px; left: 36px; top: 62px;
  background: rgba(15,107,79,.66); border: 2px solid var(--amber-pollen); transform: translateZ(12px);
  box-shadow: 24px 24px 0 rgba(31,78,140,.65), 48px 48px 0 rgba(27,16,40,.82);
}
.book-page { position: absolute; height: 110px; width: 28px; top: 40px; background: var(--ivory-paper); border-left: 4px solid var(--garnet-signal); }
.page-one { left: 54px; } .page-two { left: 88px; height: 128px; top: 30px; } .page-three { left: 122px; }
.drawer { position: absolute; left: 54px; width: 128px; height: 26px; background: var(--garnet-signal); border: 1px solid var(--ivory-paper); transform: translateZ(56px); animation: drawerSlide 4.8s ease-in-out infinite; }
.drawer-a { top: 178px; } .drawer-b { top: 212px; animation-delay: .9s; }
.seed-pod { position: absolute; right: 4px; top: 164px; width: 56px; height: 86px; border-radius: 50%; background: var(--amber-pollen); border: 4px solid var(--moss-shadow); transform: translateZ(98px); animation: podTurn 6s ease-in-out infinite; }

.carbon-ring { position: absolute; width: 260px; height: 260px; border: 1px solid rgba(228,183,90,.22); border-radius: 50%; animation: slowSpin 24s linear infinite; }
.carbon-ring i { width: 11px; height: 11px; border-radius: 50%; background: var(--amber-pollen); position: absolute; box-shadow: 0 0 18px var(--amber-pollen); }
.carbon-ring i:nth-child(1){left:50%;top:-5px}.carbon-ring i:nth-child(2){right:18px;top:56px}.carbon-ring i:nth-child(3){right:18px;bottom:56px}.carbon-ring i:nth-child(4){left:50%;bottom:-5px}.carbon-ring i:nth-child(5){left:18px;bottom:56px}.carbon-ring i:nth-child(6){left:18px;top:56px}
.specimen-tag { position: absolute; left: 28px; bottom: 24px; color: var(--ivory-paper); }

.masonry-preview { position: absolute; left: clamp(24px, 6vw, 90px); bottom: 24px; display: flex; gap: 10px; opacity: .65; }
.masonry-preview span { width: 46px; background: var(--greenhouse-emerald); border: 1px solid var(--amber-pollen); }
.masonry-preview span:nth-child(1){height:80px}.masonry-preview span:nth-child(2){height:46px}.masonry-preview span:nth-child(3){height:116px;background:var(--sapphire-glass)}.masonry-preview span:nth-child(4){height:62px;background:var(--garnet-signal)}.masonry-preview span:nth-child(5){height:96px;background:var(--moss-shadow)}

.section-ribbon { max-width: 760px; margin-bottom: 38px; border-left: 3px solid var(--greenhouse-emerald); padding-left: 22px; }
.section-ribbon.centered { margin-inline: auto; text-align: center; border-left: 0; border-bottom: 2px solid var(--greenhouse-emerald); padding: 0 0 20px; }
.section-ribbon h2 { font-size: clamp(40px, 6vw, 86px); line-height: .98; color: var(--ivory-paper); }

.index-field { background: linear-gradient(180deg, rgba(27,16,40,.08), rgba(38,58,37,.52)); }
.masonry-wall { columns: 4 250px; column-gap: 18px; }
.knowledge-tile {
  break-inside: avoid;
  position: relative;
  margin: 0 0 18px;
  padding: 24px;
  min-height: 210px;
  overflow: hidden;
  color: var(--ivory-paper);
  border: 1px solid rgba(244,234,210,.2);
  box-shadow: inset 0 0 0 1px rgba(228,183,90,.08), 0 24px 60px rgba(0,0,0,.25);
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.knowledge-tile::after {
  content: attr(data-note);
  position: absolute;
  left: 18px; right: 18px; bottom: 14px;
  color: var(--amber-pollen);
  font-family: var(--interface);
  font-size: 12px;
  letter-spacing: .08em;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .32s ease, transform .32s ease;
}
.knowledge-tile:hover { transform: translateY(-8px); border-color: var(--amber-pollen); box-shadow: 0 24px 80px rgba(0,0,0,.36); }
.knowledge-tile:hover::after { opacity: 1; transform: translateY(0); }
.knowledge-tile h3 { margin-top: 20px; font-size: 31px; }
.knowledge-tile p { color: rgba(244,234,210,.84); }
.tall { min-height: 430px; } .medium { min-height: 310px; } .compact { min-height: 190px; } .wide { min-height: 280px; }
.emerald { background: linear-gradient(150deg, rgba(15,107,79,.72), rgba(27,16,40,.78)); }
.garnet { background: linear-gradient(150deg, rgba(158,47,77,.78), rgba(27,16,40,.86)); }
.sapphire { background: linear-gradient(150deg, rgba(31,78,140,.76), rgba(27,16,40,.82)); }
.moss { background: linear-gradient(150deg, rgba(38,58,37,.9), rgba(15,107,79,.46)); }
.amber { background: linear-gradient(150deg, rgba(228,183,90,.72), rgba(38,58,37,.82)); color: var(--carbon-plum); }
.amber p, .amber .tile-label { color: var(--carbon-plum); }
.ivory { background: var(--ivory-paper); color: var(--carbon-plum); }
.ivory p, .ivory .tile-label { color: var(--carbon-plum); }
.jewel-pin { position: absolute; right: 18px; top: 18px; width: 18px; height: 18px; background: var(--garnet-signal); clip-path: polygon(25% 0, 75% 0, 100% 50%, 75% 100%, 25% 100%, 0 50%); }
.jewel-pin.amber { background: var(--amber-pollen); } .jewel-pin.sapphire { background: var(--sapphire-glass); }
.term { display: inline-block; margin-top: 14px; padding: 8px 12px; border: 1px solid var(--amber-pollen); font-family: var(--interface); }

.mini-icon { margin-top: 28px; }
.soil-core { width: 84px; border: 1px solid var(--ivory-paper); }
.soil-core b { display: block; height: 22px; background: var(--moss-shadow); } .soil-core b:nth-child(2){background:var(--garnet-signal)}.soil-core b:nth-child(3){background:var(--amber-pollen)}.soil-core b:nth-child(4){background:var(--sapphire-glass)}
.drawer-stack i { display: block; width: 120px; height: 26px; margin: 8px 0; background: var(--ivory-paper); border-left: 20px solid var(--amber-pollen); animation: drawerSlide 5s ease-in-out infinite; }
.drawer-stack i:nth-child(2){animation-delay:.4s}.drawer-stack i:nth-child(3){animation-delay:.8s}
.constellation { position: relative; height: 96px; max-width: 260px; margin-top: 22px; }
.constellation::before { content:""; position:absolute; inset:16px 28px; border:1px dashed rgba(228,183,90,.7); border-radius:50%; }
.constellation i { position:absolute; width:13px; height:13px; border-radius:50%; background:var(--amber-pollen); box-shadow:0 0 14px var(--amber-pollen); }
.constellation i:nth-child(1){left:50%;top:0}.constellation i:nth-child(2){right:38px;top:24px}.constellation i:nth-child(3){right:40px;bottom:15px}.constellation i:nth-child(4){left:50%;bottom:0}.constellation i:nth-child(5){left:38px;bottom:15px}.constellation i:nth-child(6){left:38px;top:24px}
.seed-diagram { width: 100px; height: 130px; border-radius: 50%; border: 3px solid var(--carbon-plum); display: grid; place-items: center; animation: podTurn 6s ease-in-out infinite; }
.seed-diagram i { display:block; width:14px; height:14px; background:var(--garnet-signal); border-radius:50%; margin:4px; }
.furrows { height: 120px; background-image: repeating-linear-gradient(30deg, transparent 0 16px, rgba(244,234,210,.25) 17px 19px, transparent 20px 34px); border: 1px solid rgba(244,234,210,.25); }

.machine-field { background: linear-gradient(180deg, rgba(38,58,37,.52), rgba(31,78,140,.22)); }
.machine-diagram { display: grid; grid-template-columns: 1fr .55fr 1fr .55fr 1fr; align-items: center; gap: 10px; max-width: 1180px; margin: 70px auto 26px; }
.machine-node { min-height: 310px; padding: 28px; background: rgba(27,16,40,.62); border: 1px solid rgba(244,234,210,.2); display: grid; align-content: center; justify-items: center; text-align: center; box-shadow: inset 0 0 0 1px rgba(15,107,79,.35); }
.machine-node h3 { font-size: 38px; color: var(--amber-pollen); }
.machine-node p { max-width: 220px; margin: 8px auto 0; color: rgba(244,234,210,.8); }
.irrigation-line { height: 4px; background-image: linear-gradient(90deg, rgba(244,234,210,.22) 50%, transparent 50%); background-size: 16px 4px; position: relative; overflow: hidden; }
.irrigation-line span { position:absolute; inset:0; width:36%; background: var(--amber-pollen); box-shadow:0 0 18px var(--amber-pollen); animation: lineBrighten 3.8s ease-in-out infinite; }
.iso-field { width: 125px; height: 96px; transform: rotateX(58deg) rotateZ(-38deg); background: var(--greenhouse-emerald); border: 2px solid var(--amber-pollen); display: grid; gap: 7px; padding: 16px; }
.iso-field span { background: rgba(244,234,210,.55); }
.server-rack { width: 120px; padding: 12px; border: 2px solid var(--greenhouse-emerald); background: var(--sapphire-glass); }
.server-rack i { display:block; height:22px; margin:8px 0; background: var(--ivory-paper); border-right: 16px solid var(--amber-pollen); }
.prism-pump { width: 120px; height: 120px; background: var(--garnet-signal); clip-path: polygon(50% 0, 100% 26%, 82% 100%, 18% 100%, 0 26%); display:grid; place-items:center; }
.prism-pump i { width: 48px; height: 48px; border-radius:50%; background: var(--amber-pollen); box-shadow:0 0 28px var(--amber-pollen); }
.machine-caption { text-align: center; color: var(--ivory-paper); }

.glossary-field { background: linear-gradient(180deg, rgba(31,78,140,.18), rgba(27,16,40,.95)); overflow: hidden; }
.glossary-sky { position: relative; min-height: 560px; margin-top: 20px; border: 1px solid rgba(244,234,210,.16); background: radial-gradient(circle at 50% 50%, rgba(15,107,79,.22), transparent 62%); }
.glossary-term { position: absolute; left: var(--x); top: var(--y); padding: 12px 15px; border: 1px solid var(--amber-pollen); background: rgba(27,16,40,.75); color: var(--ivory-paper); cursor: pointer; font-family: var(--interface); font-weight: 600; letter-spacing: .08em; text-transform: uppercase; animation: fireflyDrift 7s ease-in-out infinite; }
.glossary-term:nth-child(even) { animation-delay: -2s; }
.glossary-term span { position: absolute; left: 50%; top: calc(100% + 14px); width: 230px; transform: translateX(-50%) translateY(8px); padding: 12px; background: var(--ivory-paper); color: var(--carbon-plum); font-family: var(--serif-body); text-transform: none; letter-spacing: 0; opacity: 0; pointer-events: none; transition: opacity .3s ease, transform .3s ease; }
.glossary-term:hover span, .glossary-term.active span { opacity: 1; transform: translateX(-50%) translateY(0); }
.closing-note { max-width: 680px; margin: 32px auto 0; text-align: center; font-size: 24px; color: rgba(244,234,210,.82); }

.pulse-node { position: relative; }
.pulse-node::before,
.pulse-node::after {
  content: "";
  position: absolute;
  inset: -9px;
  border: 1px solid var(--garnet-signal);
  pointer-events: none;
  opacity: 0;
  animation: pulseAttention 4.6s ease-out infinite;
}
.pulse-node::after { inset: -18px; border-color: var(--amber-pollen); animation-delay: 1.25s; }
.greenhouse-icon::before, .greenhouse-icon::after { inset: -26px; transform: translateZ(115px); }

@keyframes pulseAttention { 0% { opacity: 0; transform: scale(.92); } 24% { opacity: .7; } 72%,100% { opacity: 0; transform: scale(1.16); } }
@keyframes roofGlint { 0%,100% { filter: brightness(1); } 48% { filter: brightness(1.55); } }
@keyframes drawerSlide { 0%,100% { translate: 0 0; } 46% { translate: 6px 0; } }
@keyframes podTurn { 0%,100% { rotate: 0deg; } 50% { rotate: 7deg; } }
@keyframes slowSpin { to { rotate: 360deg; } }
@keyframes lineBrighten { 0% { left: -40%; opacity: .25; } 45% { opacity: 1; } 100% { left: 105%; opacity: .25; } }
@keyframes fireflyDrift { 0%,100% { transform: translate(0,0); } 50% { transform: translate(12px,-14px); } }

@media (max-width: 900px) {
  .gate-field { grid-template-columns: 1fr; padding-top: 110px; }
  .hero-cabinet { min-height: 410px; }
  .machine-diagram { grid-template-columns: 1fr; }
  .irrigation-line { height: 80px; width: 4px; margin: auto; background-size: 4px 16px; background-image: linear-gradient(180deg, rgba(244,234,210,.22) 50%, transparent 50%); }
  .irrigation-line span { width: 100%; height: 36%; animation: lineBrightenMobile 3.8s ease-in-out infinite; }
  .index-compass { right: 12px; top: 12px; }
  .compass-mark em { display: none; }
}

@media (max-width: 620px) {
  .field { padding-inline: 18px; }
  .gate-copy h1 { font-size: 70px; }
  .greenhouse-icon { scale: .78; }
  .glossary-sky { min-height: 680px; }
  .glossary-term { max-width: 160px; }
}

@keyframes lineBrightenMobile { 0% { top: -40%; opacity: .25; } 45% { opacity: 1; } 100% { top: 105%; opacity: .25; } }