/* ============================================================
   ЭЙДОС: ГЛУБИННАЯ ПЕТЛЯ — multi-page high-tech concept site
   Visual language: glass, fresco, dream, neural attention, scars.
   ============================================================ */

:root {
  --void-black: #0a0812;
  --deep-indigo: #1a1530;
  --deep-indigo-2: #25203a;
  --ash-gray: #4a4554;
  --bone-white: #e8e2d4;
  --ember-gold: #d4a059;
  --ember-gold-bright: #ffd878;
  --mem-blue: #4a90e2;
  --mercy-red: #c84848;
  --freedom-green: #6ee070;
  --self-violet: #d878e0;
  --glass-cyan: #a0d0e8;
  --nightmare: #fffff0;
  --dream: #ffe4d4;
  --font-mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, monospace;
  --font-serif: "Cormorant Garamond", "EB Garamond", Georgia, serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --maxw: 1280px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  background: var(--void-black);
  color: var(--bone-white);
  font-family: var(--font-body);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.016) 1px, transparent 1px),
    radial-gradient(circle at 50% 45%, transparent 0 28%, rgba(255,216,120,.045) 29%, transparent 31%, transparent 100%);
  background-size: 42px 42px, 42px 42px, 100% 100%;
  mask-image: radial-gradient(circle at 50% 42%, black 0 62%, transparent 86%);
  opacity: .75;
}
body.menu-open { overflow: hidden; }
::selection { background: rgba(212, 160, 89, 0.35); color: #fff; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }

.bg-field,
.bg-noise,
#scene-canvas,
.veil,
.progress { position: fixed; pointer-events: none; }

.bg-field {
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(1100px 760px at 72% 4%, rgba(74,144,226,0.16), transparent 62%),
    radial-gradient(820px 640px at 12% 82%, rgba(216,120,224,0.12), transparent 70%),
    radial-gradient(700px 520px at 86% 92%, rgba(200,72,72,0.08), transparent 66%),
    linear-gradient(180deg, var(--void-black) 0%, #120f22 44%, var(--deep-indigo-2) 100%);
}
.bg-noise {
  inset: -50%;
  z-index: 1;
  opacity: 0.055;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.78' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: noise-drift 26s linear infinite;
}
@keyframes noise-drift { to { transform: translate(-8%, 6%); } }
#scene-canvas {
  inset: 0;
  z-index: 2;
  width: 100vw;
  height: 100vh;
  display: block;
  filter: saturate(1.25) contrast(1.08);
}
.veil {
  inset: 0;
  z-index: 3;
  background:
    radial-gradient(circle at 52% 42%, rgba(10,8,18,0.02), rgba(10,8,18,0.34) 58%, rgba(10,8,18,0.8) 100%),
    linear-gradient(90deg, rgba(10,8,18,0.62), rgba(10,8,18,0.06) 42%, rgba(10,8,18,0.28) 72%, rgba(10,8,18,0.68)),
    linear-gradient(180deg, rgba(10,8,18,0.05), rgba(10,8,18,0.55) 78%, var(--void-black));
}
.progress {
  top: 0; left: 0; width: 0; height: 2px; z-index: 200;
  background: linear-gradient(90deg, var(--mem-blue), var(--ember-gold-bright), var(--self-violet), var(--mercy-red));
  box-shadow: 0 0 16px rgba(255,216,120,0.6);
}

/* ---------------- navigation ---------------- */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 120;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px clamp(18px, 4vw, 58px);
  background: linear-gradient(180deg, rgba(10,8,18,0.92), rgba(10,8,18,0.3), rgba(10,8,18,0));
  backdrop-filter: blur(10px);
}
.brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  white-space: nowrap;
}
.brand-mark {
  width: 18px; height: 18px; border-radius: 50%;
  border: 1px solid rgba(255,216,120,0.8);
  box-shadow: inset 0 0 12px rgba(255,216,120,0.35), 0 0 20px rgba(212,160,89,0.45);
  position: relative;
  flex: 0 0 auto;
}
.brand-mark::after {
  content: ""; position: absolute; inset: 6px; border-radius: 50%;
  background: var(--ember-gold-bright);
  animation: eye-pulse 3s var(--ease) infinite;
}
@keyframes eye-pulse { 50% { transform: scale(1.6); opacity: .45; } }
.nav-links {
  display: flex; align-items: center; gap: clamp(8px, 1.5vw, 20px);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: rgba(232,226,212,0.58);
}
.nav-links a { position: relative; transition: color .3s; white-space: nowrap; }
.nav-links a:hover,
.nav-links a.active { color: var(--bone-white); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -8px; height: 1px;
  background: var(--ember-gold); transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease);
}
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.menu-toggle { display: none; background: transparent; border: 1px solid rgba(232,226,212,.18); padding: 9px 12px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 2px; text-transform: uppercase; }

/* ---------------- layout ---------------- */

main { position: relative; z-index: 4; }
.page { padding-top: 86px; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(20px, 5vw, 64px); }
section { position: relative; padding: clamp(72px, 11vh, 145px) 0; }
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 116px 0 84px;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 12vh clamp(16px, 4vw, 60px) 10vh;
  z-index: -1;
  border: 1px solid rgba(232,226,212,.07);
  background:
    linear-gradient(90deg, rgba(10,8,18,.52), rgba(10,8,18,.04) 48%, rgba(10,8,18,.30)),
    radial-gradient(circle at 70% 42%, rgba(255,216,120,.08), transparent 48%);
  box-shadow: inset 0 0 120px rgba(74,144,226,.08), 0 30px 110px rgba(0,0,0,.34);
  backdrop-filter: blur(1.5px);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(280px, .56fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  width: 100%;
}
.hero-grid > div:first-child {
  padding: clamp(22px, 4vw, 44px);
  margin-left: clamp(-22px, -2vw, 0px);
  background: linear-gradient(90deg, rgba(10,8,18,.56), rgba(10,8,18,.12) 68%, transparent);
  border-left: 1px solid rgba(255,216,120,.16);
  box-shadow: -28px 0 80px rgba(10,8,18,.46);
}
.hero.compact { min-height: 82vh; }
.hero.compact .hero-grid { grid-template-columns: minmax(0, .98fr) minmax(280px, .48fr); }

.kicker,
.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--ember-gold);
  margin-bottom: 22px;
}
.kicker::before,
.eyebrow::before { content: ""; width: 36px; height: 1px; background: linear-gradient(90deg, var(--ember-gold), transparent); flex: 0 0 auto; }
h1, h2, h3, h4 { font-weight: 300; line-height: 1.07; }
h1 {
  font-family: var(--font-serif);
  font-size: clamp(50px, 8.2vw, 116px);
  letter-spacing: -2px;
  margin-bottom: 24px;
  max-width: 960px;
  text-wrap: balance;
  text-shadow: 0 0 64px rgba(74,144,226,.25), 0 0 110px rgba(255,216,120,.12);
}
h1 em,
.section-title em { color: var(--ember-gold-bright); font-style: italic; text-shadow: 0 0 46px rgba(212,160,89,0.26); }
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 5vw, 66px);
  letter-spacing: -0.8px;
  margin-bottom: 24px;
  text-wrap: balance;
}
.lead,
.sub {
  font-size: clamp(16px, 2vw, 21px);
  max-width: 760px;
  color: rgba(232,226,212,0.72);
}
.sub { font-family: var(--font-serif); font-style: italic; font-size: clamp(19px, 2.4vw, 28px); line-height: 1.35; }
.muted { color: rgba(232,226,212,0.54); }
.small { font-size: 13px; color: rgba(232,226,212,.5); }

.cta-row { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 36px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px;
  padding: 14px 24px;
  border: 1px solid rgba(212,160,89,.72);
  background: rgba(212,160,89,0.06);
  color: var(--ember-gold-bright);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
  transition: border-color .4s var(--ease), color .4s var(--ease), background .4s var(--ease), transform .4s var(--ease);
}
.btn::before { content: ""; position: absolute; inset: 0; background: var(--ember-gold); transform: translateY(101%); transition: transform .4s var(--ease); z-index: -1; }
.btn:hover { color: var(--void-black); border-color: var(--ember-gold-bright); transform: translateY(-2px); }
.btn:hover::before { transform: translateY(0); }
.btn.ghost { border-color: rgba(232,226,212,.2); color: rgba(232,226,212,.76); background: rgba(232,226,212,.035); }
.btn.ghost::before { background: rgba(232,226,212,.12); }
.btn.ghost:hover { color: var(--bone-white); }

/* ---------------- panels & cards ---------------- */

.glass-panel,
.metric-panel,
.quote-panel,
.code-card {
  border: 1px solid rgba(232,226,212,.1);
  background: linear-gradient(150deg, rgba(26,21,48,.5), rgba(10,8,18,.22));
  box-shadow: 0 24px 80px rgba(0,0,0,.22), inset 0 1px 0 rgba(255,255,255,.035);
  backdrop-filter: blur(7px);
}
.glass-panel { padding: clamp(24px, 4vw, 42px); }
.hero-card {
  min-height: 390px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
  position: relative;
  overflow: hidden;
  transform: translateY(3vh);
}
.hero-card::before {
  content: ""; position: absolute; inset: -30%;
  background: conic-gradient(from 140deg, transparent, rgba(255,216,120,.1), transparent, rgba(74,144,226,.12), transparent);
  animation: slow-spin 22s linear infinite;
}
@keyframes slow-spin { to { transform: rotate(360deg); } }
.hero-card > * { position: relative; z-index: 1; }
.formula {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.85;
  color: rgba(232,226,212,.78);
  white-space: pre-wrap;
  word-break: break-word;
}
.formula .gold { color: var(--ember-gold-bright); }
.formula .red { color: #ff8f8f; }
.formula .blue { color: var(--mem-blue); }
.formula .green { color: var(--freedom-green); }
.formula .violet { color: var(--self-violet); }
.formula .dim { color: var(--ash-gray); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; margin-top: 44px; }
.grid.dense { grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); }
.card {
  position: relative;
  padding: 28px;
  min-height: 210px;
  border: 1px solid rgba(232,226,212,.09);
  background: linear-gradient(150deg, rgba(26,21,48,.48), rgba(10,8,18,.32));
  backdrop-filter: blur(6px);
  overflow: hidden;
  transition: transform .5s var(--ease), border-color .5s var(--ease), background .5s var(--ease);
  display: flex;
  flex-direction: column;
}
.card::before { content: ""; position: absolute; inset: 0 0 auto; height: 1px; background: linear-gradient(90deg, transparent, var(--accent, var(--ember-gold)), transparent); opacity: .7; }
.card::after { content: ""; position: absolute; width: 180px; height: 180px; right: -80px; bottom: -90px; border-radius: 50%; background: radial-gradient(circle, var(--accent, var(--ember-gold)), transparent 65%); opacity: .06; }
.card:hover { transform: translateY(-7px); border-color: rgba(212,160,89,.35); background: linear-gradient(150deg, rgba(34,27,62,.66), rgba(10,8,18,.42)); }
.idx { font-family: var(--font-mono); font-size: 10px; color: var(--accent, var(--ember-gold)); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 16px; }
.card h3 { font-family: var(--font-serif); font-size: 26px; margin-bottom: 12px; }
.card p { color: rgba(232,226,212,.62); font-size: 14px; }
.card .formula { margin-top: auto; padding-top: 14px; font-size: 11.5px; opacity: .85; }
.c-blue { --accent: var(--mem-blue); }
.c-red { --accent: var(--mercy-red); }
.c-green { --accent: var(--freedom-green); }
.c-violet { --accent: var(--self-violet); }
.c-cyan { --accent: var(--glass-cyan); }
.c-gold { --accent: var(--ember-gold-bright); }
.c-dream { --accent: var(--dream); }

.two-col { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .86fr); gap: clamp(34px, 6vw, 80px); align-items: center; }
.split-reverse { grid-template-columns: minmax(300px, .86fr) minmax(0, 1fr); }
.band { border-top: 1px solid rgba(232,226,212,.08); border-bottom: 1px solid rgba(232,226,212,.08); background: linear-gradient(180deg, rgba(10,8,18,.08), rgba(26,21,48,.16), rgba(10,8,18,.08)); }
.quote-big {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(27px, 4.5vw, 54px);
  line-height: 1.22;
  max-width: 1020px;
  text-wrap: balance;
}
.quote-big b { color: var(--ember-gold-bright); font-weight: 400; }
.quote-big .red { color: #ff8f8f; }

.metric-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1px; margin-top: 44px; border: 1px solid rgba(232,226,212,.08); background: rgba(232,226,212,.06); }
.metric { padding: 30px 22px; background: rgba(10,8,18,.78); }
.metric .num { font-family: var(--font-serif); font-size: clamp(32px, 4.6vw, 54px); line-height: 1; color: var(--ember-gold-bright); }
.metric .label { margin-top: 12px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 1.8px; text-transform: uppercase; color: rgba(232,226,212,.48); }

/* ---------------- path / verb / biome cards ---------------- */

.path-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(215px,1fr)); gap: 16px; margin-top: 48px; }
.path-card { padding: 26px; min-height: 200px; border: 1px solid rgba(232,226,212,.09); background: rgba(26,21,48,.42); position: relative; overflow: hidden; transition: transform .45s var(--ease), border-color .45s; }
.path-card:hover { transform: translateY(-6px); border-color: rgba(255,216,120,.36); }
.path-card .symbol { font-size: 32px; color: var(--accent, var(--ember-gold)); text-shadow: 0 0 22px currentColor; opacity: .85; margin-bottom: 14px; }
.path-card h3 { font-family: var(--font-serif); font-size: 24px; margin-bottom: 8px; }
.path-card p { color: rgba(232,226,212,.58); font-size: 13.5px; }
.path-card .tag { margin-top: 14px; }

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--accent, var(--ember-gold));
  border: 1px solid color-mix(in srgb, var(--accent, var(--ember-gold)) 40%, transparent);
  padding: 4px 10px;
  margin: 0 6px 6px 0;
  background: color-mix(in srgb, var(--accent, var(--ember-gold)) 7%, transparent);
}

/* wordfield: drifting alphabet of being */
.wordfield { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 12px 28px; min-height: 330px; padding: 36px; overflow: hidden; }
.wordfield span { font-family: var(--font-serif); font-style: italic; color: rgba(232,226,212,.52); text-shadow: 0 0 24px rgba(74,144,226,.12); animation: float-word 8s ease-in-out infinite; cursor: default; transition: color .3s; }
.wordfield span:hover { color: var(--ember-gold-bright); }
.wordfield span.neg { color: rgba(255,143,143,.5); text-decoration: line-through; text-decoration-color: rgba(255,143,143,.6); }
.wordfield span.neg:hover { color: #ff8f8f; }
@keyframes float-word { 50% { transform: translateY(-9px); } }

/* spectrogram bars */
.spectrogram { display: grid; gap: 10px; margin-top: 24px; }
.bar { display: grid; grid-template-columns: 130px 1fr 52px; align-items: center; gap: 12px; font-family: var(--font-mono); font-size: 11px; color: rgba(232,226,212,.62); }
.bar i {
  display: block; height: 8px; width: 0;
  background: linear-gradient(90deg, var(--accent, var(--ember-gold)), transparent);
  box-shadow: 0 0 18px color-mix(in srgb, var(--accent, var(--ember-gold)) 42%, transparent);
  transition: width 1.4s var(--ease);
}
.in .bar i, .bar.in i { width: var(--w); }
.bar.neg i { background: linear-gradient(90deg, var(--mercy-red), transparent); }
.bar .v { text-align: right; color: var(--accent, var(--ember-gold)); }
.bar.neg .v { color: #ff8f8f; }

/* timeline */
.timeline { margin-top: 50px; display: grid; gap: 14px; }
.step-line { display: grid; grid-template-columns: 72px 1fr; gap: 20px; align-items: start; padding: 22px; border: 1px solid rgba(232,226,212,.08); background: rgba(10,8,18,.45); transition: border-color .4s; }
.step-line:hover { border-color: rgba(212,160,89,.3); }
.step-line .n { font-family: var(--font-serif); font-size: 42px; color: var(--ember-gold); line-height: 1; opacity: .72; }
.step-line h3 { font-family: var(--font-serif); font-size: 25px; margin-bottom: 6px; }
.step-line p { color: rgba(232,226,212,.59); font-size: 14px; }

/* scars */
.scar-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 16px; margin-top: 42px; }
.scar { aspect-ratio: 1; border: 1px solid rgba(232,226,212,.09); background: rgba(10,8,18,.54); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; padding: 14px; text-align: center; transition: border-color .4s, transform .4s var(--ease); }
.scar:hover { border-color: rgba(255,216,120,.3); transform: translateY(-4px); }
.scar .mark { width: 54px; height: 54px; position: relative; flex: 0 0 auto; }
.scar .label { font-family: var(--font-mono); font-size: 10px; letter-spacing: 1.4px; color: rgba(232,226,212,.55); text-transform: uppercase; }
.scar .desc { font-size: 11px; color: rgba(232,226,212,.4); line-height: 1.4; }
.spiral { border: 2px solid var(--ember-gold-bright); border-right-color: transparent; border-radius: 50%; animation: spin 3.2s linear infinite; box-shadow: 0 0 20px rgba(255,216,120,.36); }
.spiral::after { content:""; position:absolute; inset:9px; border:2px solid var(--ember-gold); border-top-color:transparent; border-radius:50%; }
.ring { border: 2px solid var(--mem-blue); border-radius: 50%; animation: ring-pulse 2.4s ease-out infinite; }
.fold { background: #15121a; box-shadow: inset 0 0 28px #000; clip-path: polygon(0 0, 100% 0, 78% 100%, 0 82%); }
.burn { background: var(--nightmare); border-radius: 50%; animation: burn 1.8s ease-in-out infinite; }
.thread { width: 4px !important; background: var(--mercy-red); animation: thread-jerk .45s steps(3) infinite; box-shadow: 0 0 12px var(--mercy-red); }
.stain { background: radial-gradient(circle, rgba(112,112,120,.9), transparent 70%); border-radius: 50%; filter: blur(3px); }
.crack { background: linear-gradient(135deg, transparent 45%, var(--glass-cyan) 48%, transparent 52%), linear-gradient(50deg, transparent 44%, var(--glass-cyan) 48%, transparent 52%); animation: shimmer 2s ease-in-out infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes ring-pulse { to { box-shadow: 0 0 0 28px rgba(74,144,226,0); } }
@keyframes burn { 50% { box-shadow: 0 0 38px #fff, 0 0 70px #fff; } }
@keyframes thread-jerk { 0% { transform: translateX(-3px); } 50% { transform: translateX(4px) rotate(5deg); } }
@keyframes shimmer { 50% { opacity: 1; filter: drop-shadow(0 0 10px var(--glass-cyan)); } }

/* duel: two opposing versions */
.duel { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; border: 1px solid rgba(232,226,212,.09); background: rgba(232,226,212,.06); margin-top: 44px; }
.duel > div { padding: clamp(26px, 4vw, 46px); background: rgba(10,8,18,.82); }
.duel .side-a { border-left: 2px solid var(--ash-gray); }
.duel .side-b { border-left: 2px solid var(--ember-gold-bright); }
.duel h3 { font-family: var(--font-serif); font-size: clamp(26px, 3vw, 38px); margin: 10px 0 16px; }
.duel .big { font-family: var(--font-serif); font-size: clamp(44px, 6vw, 84px); line-height: 1; }
.duel.side-a .big { color: var(--ash-gray); }
.duel p { color: rgba(232,226,212,.6); font-size: 14.5px; }
.duel .vs {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%);
  font-family: var(--font-serif); font-style: italic; font-size: 40px; color: var(--ember-gold-bright);
  text-shadow: 0 0 30px rgba(255,216,120,.5); z-index: 2; display: none;
}
.duel-wrap { position: relative; }
.duel-wrap .vs { display: block; }

/* council of versions */
.voice-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 20px; margin-top: 48px; }
.voice {
  position: relative; padding: 32px 28px 28px; min-height: 300px;
  border: 1px solid rgba(232,226,212,.1);
  background: linear-gradient(160deg, rgba(26,21,48,.55), rgba(10,8,18,.3));
  overflow: hidden;
  transition: transform .5s var(--ease), border-color .5s;
  display: flex; flex-direction: column;
}
.voice:hover { transform: translateY(-8px); border-color: color-mix(in srgb, var(--accent, var(--ember-gold)) 45%, transparent); }
.voice::before { content: ""; position: absolute; inset: 0 0 auto; height: 2px; background: linear-gradient(90deg, var(--accent, var(--ember-gold)), transparent); }
.voice .role { font-family: var(--font-mono); font-size: 10px; letter-spacing: 3px; text-transform: uppercase; color: var(--accent, var(--ember-gold)); }
.voice h3 { font-family: var(--font-serif); font-size: 30px; margin: 12px 0 14px; }
.voice .motto { font-family: var(--font-serif); font-style: italic; font-size: 18px; line-height: 1.4; color: rgba(232,226,212,.85); margin-bottom: 14px; }
.voice p { color: rgba(232,226,212,.58); font-size: 13.5px; }
.voice .formula { margin-top: auto; padding-top: 16px; font-size: 11px; }

/* world variants (РЕЗОНАНС / АНТИФОН / МИЦЕЛИЙ) */
.variant-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 22px; margin-top: 48px; }
.variant {
  position: relative; padding: 34px 30px;
  border: 1px solid rgba(232,226,212,.1);
  background:
    radial-gradient(500px 260px at 80% -10%, color-mix(in srgb, var(--accent, var(--ember-gold)) 10%, transparent), transparent 70%),
    linear-gradient(160deg, rgba(26,21,48,.5), rgba(10,8,18,.35));
  overflow: hidden;
}
.variant .glyph { font-family: var(--font-serif); font-size: 54px; line-height: 1; color: var(--accent, var(--ember-gold)); text-shadow: 0 0 34px currentColor; opacity: .85; }
.variant h3 { font-family: var(--font-serif); font-size: 34px; margin: 18px 0 4px; letter-spacing: 2px; }
.variant .sub-title { font-family: var(--font-mono); font-size: 10px; letter-spacing: 2.4px; text-transform: uppercase; color: rgba(232,226,212,.45); margin-bottom: 18px; }
.variant p { color: rgba(232,226,212,.62); font-size: 14px; margin-bottom: 12px; }
.variant .finals { border-top: 1px dashed rgba(232,226,212,.15); padding-top: 14px; font-family: var(--font-mono); font-size: 11px; color: rgba(232,226,212,.55); }

/* semantic tree diagram */
.tree-map { display: grid; gap: 1px; border: 1px solid rgba(232,226,212,.09); background: rgba(232,226,212,.06); margin-top: 48px; }
.tree-row { display: grid; grid-template-columns: 150px 1fr; background: rgba(10,8,18,.8); }
.tree-row .lvl {
  padding: 22px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--accent, var(--ember-gold)); border-right: 1px solid rgba(232,226,212,.08);
  display: flex; align-items: center;
}
.tree-row .vals { padding: 18px 22px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; }
.tree-row .vals span {
  font-family: var(--font-serif); font-style: italic; font-size: 17px; color: rgba(232,226,212,.8);
  padding: 3px 12px; border: 1px solid rgba(232,226,212,.12); border-radius: 20px;
  transition: all .3s;
}
.tree-row .vals span:hover { color: var(--void-black); background: var(--accent, var(--ember-gold-bright)); border-color: transparent; }
.tree-row.thorns .vals span { border-style: dashed; color: #ff8f8f; }
.tree-row.thorns .vals span:hover { background: var(--mercy-red); color: #fff; }

/* honesty table */
.honesty { width: 100%; border-collapse: collapse; margin-top: 36px; font-size: 14px; }
.honesty th, .honesty td { padding: 16px 18px; text-align: left; border-bottom: 1px solid rgba(232,226,212,.08); }
.honesty th { font-family: var(--font-mono); font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: var(--ember-gold); font-weight: 400; }
.honesty td:first-child { font-family: var(--font-serif); font-size: 19px; }
.honesty .ok { color: var(--freedom-green); }
.honesty .no { color: #ff8f8f; }
.honesty .part { color: var(--ember-gold-bright); }
.honesty tr:hover td { background: rgba(255,255,255,.02); }

/* echo dialogue */
.dialogue { display: grid; gap: 14px; margin-top: 40px; }
.line {
  padding: 20px 24px; max-width: 720px;
  border: 1px solid rgba(232,226,212,.09);
  background: rgba(26,21,48,.4);
  font-family: var(--font-serif); font-style: italic; font-size: clamp(17px, 2vw, 21px); line-height: 1.45;
  position: relative;
}
.line::before {
  content: attr(data-who);
  display: block; font-family: var(--font-mono); font-style: normal; font-size: 9px;
  letter-spacing: 2.4px; text-transform: uppercase; color: var(--accent, var(--ember-gold)); margin-bottom: 8px;
}
.line.anti { justify-self: end; border-color: rgba(200,72,72,.25); background: rgba(40,14,20,.35); --accent: #ff8f8f; color: rgba(232,226,212,.86); }

/* grammar chips */
.grammar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 30px; font-family: var(--font-mono); font-size: 12px; }
.grammar .g {
  padding: 10px 16px; border: 1px solid color-mix(in srgb, var(--accent, var(--ember-gold)) 45%, transparent);
  background: color-mix(in srgb, var(--accent, var(--ember-gold)) 8%, transparent);
  color: var(--bone-white); letter-spacing: .5px;
}
.grammar .op { color: var(--ash-gray); font-size: 15px; }
.grammar .g.neg { --accent: var(--mercy-red); text-decoration: line-through; color: #ff9d9d; }

/* layer stack (Ядро/Мантия/Кора/Атмосфера) */
.layers { display: grid; gap: 12px; margin-top: 40px; }
.layer {
  display: grid; grid-template-columns: 150px 1fr; gap: 18px; align-items: center;
  padding: 20px 24px; border: 1px solid rgba(232,226,212,.09);
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent, var(--ember-gold)) 9%, transparent), rgba(10,8,18,.4) 55%);
  transition: transform .4s var(--ease), border-color .4s;
}
.layer:hover { transform: translateX(8px); border-color: color-mix(in srgb, var(--accent, var(--ember-gold)) 40%, transparent); }
.layer .name { font-family: var(--font-serif); font-size: 24px; color: var(--accent, var(--ember-gold)); }
.layer p { color: rgba(232,226,212,.6); font-size: 13.5px; }

/* wild ideas strip */
.wild { display: grid; gap: 0; margin-top: 44px; border-top: 1px solid rgba(232,226,212,.08); }
.wild-item {
  display: grid; grid-template-columns: 60px 1fr; gap: 22px; align-items: baseline;
  padding: 26px 8px; border-bottom: 1px solid rgba(232,226,212,.08);
  transition: background .3s, padding-left .35s var(--ease);
}
.wild-item:hover { background: rgba(255,216,120,.03); padding-left: 22px; }
.wild-item .num { font-family: var(--font-mono); font-size: 11px; color: var(--ember-gold); letter-spacing: 2px; }
.wild-item h3 { font-family: var(--font-serif); font-weight: 300; font-size: clamp(21px, 2.8vw, 31px); line-height: 1.25; }
.wild-item h3 em { color: var(--ember-gold-bright); }
.wild-item p { grid-column: 2; color: rgba(232,226,212,.55); font-size: 14px; margin-top: 6px; max-width: 760px; }

/* argument list (совет споров) */
.args { display: grid; gap: 16px; margin-top: 44px; }
.arg { padding: 24px 28px; border-left: 2px solid var(--accent, var(--ember-gold)); background: rgba(10,8,18,.5); }
.arg h3 { font-family: var(--font-serif); font-size: 23px; margin-bottom: 8px; }
.arg p { color: rgba(232,226,212,.6); font-size: 14px; }
.arg .sides { display: block; margin-top: 10px; font-family: var(--font-mono); font-size: 11px; color: rgba(232,226,212,.45); line-height: 1.8; }
.arg .sides b { color: var(--accent, var(--ember-gold)); font-weight: 400; }

/* footer & next */
.page-footer { position: relative; z-index: 4; border-top: 1px solid rgba(232,226,212,.08); padding: 44px clamp(20px, 5vw, 64px); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 18px; font-family: var(--font-mono); color: rgba(232,226,212,.45); font-size: 11px; letter-spacing: 1px; }
.next-strip { border-top: 1px solid rgba(232,226,212,.08); border-bottom: 1px solid rgba(232,226,212,.08); }
.next-strip a { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; padding: clamp(34px, 7vw, 76px) 0; transition: padding-left .4s var(--ease); }
.next-strip a:hover { padding-left: 18px; }
.next-strip .kicker { margin-bottom: 8px; }
.next-strip .next-title { font-family: var(--font-serif); font-size: clamp(30px, 4.8vw, 60px); display: block; }
.next-strip .arrow { font-family: var(--font-serif); font-size: 56px; color: var(--ember-gold); transition: transform .4s var(--ease); }
.next-strip a:hover .arrow { transform: translateX(12px); }

/* reveal */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .95s var(--ease), transform .95s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.d1 { transition-delay: .1s; } .d2 { transition-delay: .2s; } .d3 { transition-delay: .3s; } .d4 { transition-delay: .4s; }

/* hint for 3D interaction */
.gaze-hint {
  position: fixed; right: clamp(14px, 3vw, 40px); bottom: 26px; z-index: 110;
  font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 2px; text-transform: uppercase;
  color: rgba(232,226,212,.4); display: flex; align-items: center; gap: 10px; pointer-events: none;
}
.gaze-hint::before { content: ""; width: 8px; height: 8px; border-radius: 50%; border: 1px solid var(--ember-gold); animation: eye-pulse 2.2s infinite; }

/* concept art figure */
.art-figure { margin-top: 44px; border: 1px solid rgba(232,226,212,.12); background: rgba(10,8,18,.5); padding: 14px; box-shadow: 0 24px 80px rgba(0,0,0,.28); }
.art-figure img { display: block; width: 100%; height: auto; }
.art-figure figcaption { margin-top: 12px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase; color: rgba(232,226,212,.5); }

/* ---------------- responsive ---------------- */

@media (max-width: 1080px) {
  .nav-links { font-size: 9px; gap: 10px; }
}
@media (max-width: 980px) {
  .hero-grid,
  .two-col,
  .split-reverse { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .hero-card { transform: none; min-height: 300px; }
  .hero::before { inset: 96px 14px 32px; }
  .duel { grid-template-columns: 1fr; }
  .duel-wrap .vs { display: none; }
}
@media (max-width: 900px) {
  .menu-toggle { display: inline-flex; }
  .nav-links {
    position: fixed; inset: 64px 14px auto 14px;
    display: grid; gap: 0;
    padding: 10px;
    background: rgba(10,8,18,.96);
    border: 1px solid rgba(232,226,212,.12);
    transform: translateY(-14px);
    opacity: 0;
    pointer-events: none;
    transition: all .35s var(--ease);
    font-size: 11px;
  }
  body.menu-open .nav-links { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 13px 12px; }
  .brand { letter-spacing: 1.8px; font-size: 11px; }
  .bar { grid-template-columns: 96px 1fr 46px; }
  .gaze-hint { display: none; }
}
@media (max-width: 620px) {
  h1 { font-size: clamp(42px, 15vw, 72px); }
  .step-line { grid-template-columns: 1fr; }
  .next-strip a { grid-template-columns: 1fr; }
  .tree-row { grid-template-columns: 1fr; }
  .tree-row .lvl { border-right: none; border-bottom: 1px solid rgba(232,226,212,.08); padding-bottom: 8px; }
  .layer { grid-template-columns: 1fr; gap: 6px; }
  .wild-item { grid-template-columns: 1fr; gap: 6px; }
  .wild-item p { grid-column: 1; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  .bar i, .in .bar i { width: var(--w); }
}