:root{
  --bg:#050914;
  --bg2:#08111d;
  --panel:#0a1622;
  --panel2:#0d1e2c;
  --text:#edf6fb;
  --muted:#91a9b8;
  --cyan:#56d9ef;
  --cyan2:#a9f5ff;
  --gold:#e0b35a;
  --orange:#ff9c45;
  --violet:#9878d7;
  --green:#6dbb86;
  --line:rgba(132,192,215,.18);
  --line2:rgba(132,192,215,.32);
  --radius:22px;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:
radial-gradient(circle at 78% 8%,rgba(99,74,175,.12),transparent 31rem),
radial-gradient(circle at 8% 34%,rgba(44,174,208,.08),transparent 28rem),
linear-gradient(180deg,#040812,#07111b 58%,#050914);
color:var(--text);min-height:100vh}
button,a{font:inherit}
button{cursor:pointer}
button:focus-visible,a:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.topbar{
  position:sticky;top:0;z-index:50;height:66px;padding:0 clamp(16px,4vw,56px);
  display:flex;align-items:center;justify-content:space-between;
  background:rgba(5,9,20,.82);backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.06)
}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none}
.brand-mark{width:33px;height:33px;border:1px solid rgba(86,217,239,.45);border-radius:50%;display:grid;place-items:center;color:var(--cyan);box-shadow:inset 0 0 18px rgba(86,217,239,.08)}
.brand b{display:block;letter-spacing:.15em;font-size:.85rem}
.brand small{display:block;color:var(--muted);font-size:.68rem;margin-top:2px}
.constellation-toggle,.secondary,.next,.distance-buttons button,.trace-buttons button,.hypotheses button{
  color:var(--text);background:rgba(13,30,44,.72);border:1px solid var(--line2);
  border-radius:12px;padding:.65rem .85rem;transition:.2s ease
}
.constellation-toggle:hover,.secondary:hover,.next:hover,.distance-buttons button:hover,.trace-buttons button:hover,.hypotheses button:hover{
  border-color:rgba(86,217,239,.6);transform:translateY(-1px)
}
main{width:min(1240px,100%);margin:auto;padding:0 clamp(14px,3vw,36px) 70px}
.hero{
  min-height:760px;display:grid;grid-template-columns:minmax(0,.9fr) minmax(440px,1.1fr);
  gap:42px;align-items:center;position:relative;padding:70px 0 90px
}
.hero-noise{position:absolute;inset:0;pointer-events:none;opacity:.3;background-image:radial-gradient(rgba(255,255,255,.35) .55px,transparent .55px);background-size:24px 24px;mask-image:linear-gradient(to bottom,rgba(0,0,0,.7),transparent)}
.eyebrow,.door-index,.micro-label,.jewel-label{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;font-weight:850;color:var(--cyan)}
.hero h1{font-size:clamp(5rem,15vw,10.5rem);line-height:.76;margin:.3rem 0 1rem;letter-spacing:-.055em;font-weight:840}
.subtitle{font-family:Georgia,serif;font-size:clamp(1.5rem,3vw,2.5rem);color:#d8e6ec;margin:0 0 2rem}
.hero-question{font-size:clamp(1.2rem,2vw,1.65rem);line-height:1.45;color:#aebec8}
.hero-question strong{color:var(--text)}
.primary{border:1px solid var(--cyan);background:linear-gradient(180deg,#17728f,#0f4b64);color:white;font-weight:800;padding:.9rem 1.15rem;border-radius:13px;box-shadow:0 0 26px rgba(86,217,239,.12)}
.primary:hover{filter:brightness(1.08)}
.hero-visual{position:relative;filter:drop-shadow(0 30px 60px rgba(0,0,0,.3))}
.hero-visual svg{width:100%;height:auto;overflow:visible}
.source-core{fill:var(--gold);filter:drop-shadow(0 0 16px rgba(224,179,90,.75))}
.beam{fill:none;stroke:url(#beamA);stroke-width:3;stroke-linecap:round;stroke-dasharray:9 10;animation:beamFlow 3s linear infinite}
.beam.cyan{stroke:rgba(86,217,239,.75)}
.leaf{filter:drop-shadow(0 16px 24px rgba(0,0,0,.35))}
.leaf-vein{fill:none;stroke:rgba(203,240,218,.42);stroke-width:2}
.eye-white{fill:#e8f2f4;opacity:.9}
.iris{fill:#4d7886;stroke:#8de9f1;stroke-width:3}
.pupil{fill:#06101a}
.eye-glint{fill:white;opacity:.8}
.spiral-hint{fill:none;stroke:rgba(152,120,215,.35);stroke-width:1.5;stroke-dasharray:3 8}
.hero-thesis{position:absolute;bottom:36px;left:0;right:0;display:flex;justify-content:center;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:.9rem}
.hero-thesis i{color:var(--gold)}
@keyframes beamFlow{to{stroke-dashoffset:-38}}
.spiral-nav{
  position:sticky;top:66px;z-index:40;display:grid;grid-template-columns:repeat(8,1fr);gap:8px;
  padding:12px 0;background:linear-gradient(180deg,rgba(5,9,20,.96),rgba(5,9,20,.86),transparent);
}
.spiral-line{position:absolute;left:4%;right:4%;top:34px;height:1px;background:linear-gradient(90deg,rgba(86,217,239,.15),rgba(224,179,90,.45),rgba(152,120,215,.3));z-index:-1}
.spiral-node{border:0;background:transparent;color:var(--muted);padding:0;display:flex;flex-direction:column;align-items:center;gap:5px;min-width:0}
.spiral-node span{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line2);background:#07111b;transition:.2s}
.spiral-node b{font-size:.72rem;font-weight:700}
.spiral-node.active{color:var(--text)}
.spiral-node.active span{border-color:var(--cyan);color:var(--cyan2);box-shadow:0 0 20px rgba(86,217,239,.12)}
.constellation{margin:12px 0 20px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(7,17,27,.88);overflow:hidden}
.constellation-inner{display:grid;grid-template-columns:.7fr 1.3fr;gap:24px;align-items:center;padding:24px}
.constellation h2{font-family:Georgia,serif;font-size:2rem;margin:.25rem 0}.constellation p{color:var(--muted)}
.constellation svg{width:100%;height:auto}
.constellation-links path{fill:none;stroke:rgba(86,217,239,.24);stroke-width:1.6}
.constellation-nodes circle{fill:#0a1722;stroke:rgba(224,179,90,.35);stroke-width:1.4}
.constellation-nodes text{fill:var(--text);text-anchor:middle;font-size:14px;font-weight:750}.constellation-nodes .sub{fill:var(--muted);font-size:10px;font-weight:500}
.door{
  margin:20px 0 0;min-height:590px;border:1px solid var(--line);border-radius:28px;padding:clamp(24px,4vw,50px);
  background:linear-gradient(145deg,rgba(9,23,35,.94),rgba(6,15,25,.94));
  box-shadow:0 35px 90px rgba(0,0,0,.18)
}
.door[hidden]{display:none}
.door-head{max-width:850px;margin-bottom:34px}
.door-head h2{font-size:clamp(2.1rem,5vw,4.3rem);letter-spacing:-.04em;line-height:1;margin:.25rem 0 .75rem}
.big-question{font-family:Georgia,serif;color:#cddce3;font-size:clamp(1.25rem,2vw,1.75rem);margin:0}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.two-col>div>p{font-size:1.04rem;line-height:1.7;color:#c4d3da}
blockquote{margin:22px 0;padding:17px 19px;border-left:3px solid var(--gold);background:rgba(224,179,90,.055);font-family:Georgia,serif;font-size:1.23rem;line-height:1.45;color:#f1f4ef}
.lab{border:1px solid var(--line2);border-radius:18px;background:rgba(4,11,18,.42);padding:20px}
.lab-title{font-size:.75rem;font-weight:850;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:17px}
.lab-caption{font-size:.85rem;color:var(--muted);line-height:1.5}
.signal-demo{height:180px;display:grid;grid-template-columns:58px 1fr 70px 1fr 58px;align-items:center;gap:8px}
.demo-lamp{width:42px;height:42px;border:1px solid var(--gold);border-radius:50%;display:grid;place-items:center}.demo-lamp span{width:12px;height:12px;border-radius:50%;background:var(--gold);box-shadow:0 0 24px 9px rgba(224,179,90,.36)}
.demo-ray{height:2px;background:linear-gradient(90deg,var(--gold),rgba(224,179,90,.12));box-shadow:0 0 8px rgba(224,179,90,.3)}
.demo-ray.ray-b{background:linear-gradient(90deg,rgba(86,217,239,.15),var(--cyan));box-shadow:0 0 8px rgba(86,217,239,.25)}
.demo-leaf{font-size:3.4rem;color:#72a883;transform:rotate(-13deg)}
.demo-eye{width:48px;height:48px;border-radius:50%;border:1px solid var(--cyan);color:var(--cyan2);display:grid;place-items:center;font-size:1.4rem}
.signal-demo.off .demo-ray{opacity:.08}.signal-demo.off .demo-leaf{filter:grayscale(.6) brightness(.55)}.signal-demo.off .demo-lamp span{background:#394149;box-shadow:none}
.micro-card,.striking,.formula-jewel{border:1px solid var(--line2);border-radius:15px;padding:16px 18px;margin-top:18px;background:rgba(8,20,31,.62)}
.micro-card.gold{border-color:rgba(224,179,90,.3)}.micro-card p,.striking p,.formula-jewel p{margin:.45rem 0 0;line-height:1.55}
.striking{border-color:rgba(224,179,90,.38);background:linear-gradient(135deg,rgba(224,179,90,.08),rgba(8,20,31,.5))}.striking>span{color:var(--gold);font-size:.75rem;font-weight:900;letter-spacing:.12em}
.leaf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:15px}
.leaf-chip{aspect-ratio:1;border:0;border-radius:70% 20% 65% 25%;transform:rotate(-12deg);box-shadow:inset -10px -8px 18px rgba(0,0,0,.18);transition:.2s}.leaf-chip:hover,.leaf-chip:focus-visible{transform:rotate(-12deg) scale(1.06)}
.cone-row{display:grid;grid-template-columns:38px 38px 38px 1fr;gap:8px;align-items:center;margin-top:18px}.cone{height:38px;border-radius:50%;display:grid;place-items:center;font-weight:900;border:1px solid rgba(255,255,255,.18)}.cone.s{background:#263a75}.cone.m{background:#315b4e}.cone.l{background:#6d4242}.cone-row small{color:var(--muted);line-height:1.35}
.hypotheses,.distance-buttons,.trace-buttons{display:flex;gap:8px;flex-wrap:wrap}.hypotheses button[aria-selected="true"],.distance-buttons button.active,.trace-buttons button.active{border-color:var(--cyan);background:rgba(86,217,239,.1);color:var(--cyan2)}
.hypothesis-copy{margin:18px 0;padding:18px;border-left:2px solid var(--violet);background:rgba(152,120,215,.06);line-height:1.55;color:#cbd7de}
.dna-thread{display:flex;gap:8px;flex-wrap:wrap;align-items:center;color:var(--muted);font-size:.88rem}.dna-thread i{color:var(--violet)}.dna-thread span:last-child{color:var(--violet)}
.time-display{margin-top:18px;padding:24px;border-radius:18px;background:radial-gradient(circle at 80% 20%,rgba(152,120,215,.13),transparent 45%),#07111b}.time-place{display:block;color:var(--muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.1em}.time-display strong{display:block;font-family:Georgia,serif;font-size:clamp(1.8rem,4vw,3.2rem);color:var(--cyan2);margin:.3rem 0}.time-display p{color:#becdd5;line-height:1.5}
.formula-jewel{border-color:rgba(224,179,90,.4);text-align:center;padding:20px}.jewel-label{color:var(--gold)}.formula{font-family:Georgia,serif;font-size:clamp(2.4rem,6vw,4.5rem);letter-spacing:.02em;margin:.55rem 0;color:#f4ead0;text-shadow:0 0 32px rgba(224,179,90,.14)}
.spectrum-bar{height:86px;border-radius:13px;position:relative;background:linear-gradient(90deg,#503486 0%,#3048a1 14%,#247f83 32%,#42a35f 46%,#d9c23d 63%,#e88134 79%,#a42f2f 100%);box-shadow:inset 0 0 28px rgba(0,0,0,.25);overflow:hidden}
.line{position:absolute;top:0;bottom:0;width:4px;background:#07111b;box-shadow:0 0 3px rgba(255,255,255,.2)}.l1{left:18%}.l2{left:42%}.l3{left:68%}.l4{left:74%}
.spectrum-legend{display:flex;justify-content:space-between;color:var(--muted);font-size:.7rem;margin:7px 1px 18px}
.formula-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}.formula-row>div{border:1px solid var(--line);border-radius:12px;padding:12px}.formula-row b,.formula-row span,.formula-row small{display:block}.formula-row b{font-size:.75rem;color:var(--gold)}.formula-row span{font-family:Georgia,serif;font-size:1.35rem;margin:.35rem 0}.formula-row small{color:var(--muted);line-height:1.3}
.trace-result{margin-top:18px;border:1px solid var(--line);border-radius:15px;padding:20px;display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:center}.trace-result span{color:var(--muted)}.trace-result i{color:var(--gold)}.trace-result strong{color:var(--cyan2)}.trace-result p{grid-column:1/-1;color:#c3d1d9;line-height:1.5;margin:.4rem 0 0}
.philo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.philo-grid article{border:1px solid var(--line);border-radius:18px;padding:22px;background:rgba(8,20,31,.58)}.philo-grid span{color:var(--violet);font-size:.72rem;font-weight:900;letter-spacing:.13em}.philo-grid h3{font-family:Georgia,serif;font-size:1.45rem;margin:.5rem 0}.philo-grid p{color:#c3d1d9;line-height:1.55}.striking.wide{margin-top:18px}
.door-footer{margin-top:30px;padding-top:20px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:22px}.rheon{display:flex;align-items:center;gap:14px;color:var(--muted);max-width:790px;min-width:0}
.rheon p{margin:0;line-height:1.48}
.rheon-name{color:#d9edf3;font-weight:800;letter-spacing:.02em}
.rheon-mini{
  width:64px;height:64px;min-width:64px;object-fit:contain;
  filter:drop-shadow(0 5px 12px rgba(0,0,0,.38));
  transform:translateY(-1px);
}
.rheon-mini.observation{filter:drop-shadow(0 4px 10px rgba(50,195,230,.12)) drop-shadow(0 6px 12px rgba(0,0,0,.34))}
.rheon-mini.connection{filter:drop-shadow(0 4px 11px rgba(224,179,90,.16)) drop-shadow(0 6px 12px rgba(0,0,0,.34))}
.rheon-mini.frontier{filter:drop-shadow(0 4px 11px rgba(152,120,215,.17)) drop-shadow(0 6px 12px rgba(0,0,0,.34))}
.rheon-emphasis{position:relative}
.rheon-emphasis::before{
  content:"";position:absolute;left:16px;top:50%;width:62px;height:62px;transform:translateY(-50%);
  border-radius:50%;background:radial-gradient(circle,rgba(86,217,239,.10),transparent 68%);pointer-events:none
}
.next{white-space:nowrap}
.final-door{position:relative;overflow:hidden;min-height:720px;display:grid;place-items:center}.return-forest{position:absolute;inset:0;opacity:.62;background:radial-gradient(circle at 50% 15%,rgba(94,151,117,.14),transparent 45%),linear-gradient(180deg,#07150f,#061014 70%)}.return-forest span{position:absolute;width:150px;height:72px;border-radius:90% 15% 85% 20%;background:hsl(calc(108 + var(--i)*3) calc(22% + var(--i)*1%) calc(20% + var(--i)*1.4%));left:calc((var(--i) * 8% - 6%));top:calc(16% + ((var(--i) * 43px) % 420px));transform:rotate(calc(-25deg + var(--i)*7deg));filter:blur(.3px);opacity:.62}.return-copy{position:relative;z-index:2;text-align:center;max-width:850px}.return-copy h2{font-size:clamp(3.2rem,8vw,7rem);line-height:.9;letter-spacing:-.05em;margin:.3rem 0 1.2rem}.return-copy>p{color:#cedbd6}.return-chain{display:flex;justify-content:center;gap:9px;flex-wrap:wrap;margin:22px 0;color:#b8cbc2}.return-chain i{color:var(--gold)}.return-copy blockquote{border-left:0;border-top:1px solid rgba(224,179,90,.35);border-bottom:1px solid rgba(224,179,90,.35);background:rgba(3,10,10,.26);font-size:clamp(1.3rem,3vw,2.3rem);padding:22px}.final-rheon{justify-content:center;margin:24px auto}.sources-note{margin-top:22px;color:var(--muted)}.sources-note details{border:1px solid var(--line);border-radius:14px;padding:14px 16px}.sources-note summary{cursor:pointer;color:#c8d7de;font-weight:700}.sources-note code{color:var(--cyan2)}
@media(max-width:900px){
  .hero{grid-template-columns:1fr;min-height:auto;padding:60px 0 90px}.hero-visual{max-width:720px;margin:auto}.hero-thesis{bottom:28px}
  .two-col,.constellation-inner{grid-template-columns:1fr}.philo-grid{grid-template-columns:1fr}.door-footer{align-items:flex-start;flex-direction:column}.next{white-space:normal}
}
@media(max-width:680px){
  main{padding-left:12px;padding-right:12px}.topbar{padding:0 12px}.hero h1{font-size:5rem}.hero{gap:12px;padding-top:48px}.hero-question br{display:none}
  .spiral-nav{grid-template-columns:repeat(8,62px);overflow-x:auto;justify-content:start;padding-bottom:15px}.spiral-line{display:none}.spiral-node b{font-size:.66rem}
  .door{padding:24px 18px;border-radius:21px}.signal-demo{grid-template-columns:44px 1fr 50px 1fr 44px}.demo-leaf{font-size:2.7rem}.demo-eye{width:42px;height:42px}.leaf-grid{grid-template-columns:repeat(3,1fr)}
  .formula-row{grid-template-columns:1fr}.trace-result{grid-template-columns:1fr;text-align:center}.trace-result p{grid-column:1}.cone-row{grid-template-columns:34px 34px 34px;}.cone-row small{grid-column:1/-1}.constellation svg{min-width:560px}.constellation-inner{overflow-x:auto}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}.beam{animation:none}*{transition:none!important}
}

@media(max-width:680px){
  .rheon-mini{width:54px;height:54px;min-width:54px}
  .rheon{align-items:flex-start}
}


/* =========================================================
   v0.3 — Signature visuelle : scène VOIR + Porte AETHER
   ========================================================= */

.hero.hero-scene{
  position:relative;
  min-height:min(820px,calc(100vh - 66px));
  display:flex;
  align-items:center;
  overflow:hidden;
  margin:0 calc(-1 * clamp(14px,3vw,36px));
  padding:clamp(70px,10vw,120px) clamp(24px,7vw,92px) 110px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.hero-bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
  z-index:0;
}
.hero-shade{
  position:absolute;
  inset:0;
  z-index:1;
  background:
    linear-gradient(90deg,rgba(3,8,16,.94) 0%,rgba(3,8,16,.76) 30%,rgba(3,8,16,.20) 58%,rgba(3,8,16,.06) 100%),
    linear-gradient(180deg,rgba(3,8,16,.10),rgba(3,8,16,.03) 62%,rgba(3,8,16,.76));
}
.hero.hero-scene .hero-copy{
  position:relative;
  z-index:2;
  width:min(590px,94%);
}
.hero.hero-scene h1{
  font-size:clamp(5.3rem,13vw,10.5rem);
  line-height:.78;
  margin:.3rem 0 1rem;
  letter-spacing:-.055em;
  text-shadow:0 5px 32px rgba(0,0,0,.44);
}
.hero.hero-scene .subtitle{
  color:#eef4f2;
  text-shadow:0 3px 18px rgba(0,0,0,.45);
}
.hero.hero-scene .hero-question{
  color:#d4e0e4;
  text-shadow:0 2px 14px rgba(0,0,0,.48);
}
.hero.hero-scene .hero-thesis{
  z-index:2;
  bottom:28px;
  color:#d1dce1;
  text-shadow:0 2px 12px rgba(0,0,0,.8);
}
.hero.hero-scene .primary{
  backdrop-filter:blur(6px);
}

/* La porte n'est pas l'entrée : elle apparaît quand on ouvre le réseau. */
.portal-scene{
  position:relative;
  min-height:420px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.portal-scene img{
  width:100%;
  height:460px;
  object-fit:cover;
  object-position:center 58%;
  display:block;
  filter:saturate(.88) brightness(.74);
}
.portal-scene::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(4,10,18,.88),rgba(4,10,18,.20) 58%,rgba(4,10,18,.08)),
    linear-gradient(180deg,transparent 42%,rgba(6,15,25,.92));
}
.portal-overlay{
  position:absolute;
  z-index:2;
  left:clamp(22px,4vw,52px);
  bottom:clamp(24px,4vw,42px);
  max-width:530px;
}
.portal-overlay h2{
  font-family:Georgia,serif;
  font-size:clamp(2rem,4vw,3.5rem);
  line-height:1.02;
  margin:.25rem 0 .75rem;
}
.portal-overlay p:last-child{
  margin:0;
  max-width:50ch;
  color:#c2d1d9;
  line-height:1.5;
}

/* Rhéon : visible, mais jamais mascotte. */
.rheon-mini{
  background:radial-gradient(circle,rgba(86,217,239,.05),transparent 66%);
}
.rheon-name{
  color:#e8f3f6;
}

/* Adoucit l'effet "progression pédagogique" sans refaire encore la spirale. */
.spiral-nav{
  opacity:.86;
}
.spiral-node b{
  font-weight:620;
}
.spiral-node span{
  background:rgba(7,17,27,.86);
}
.spiral-node.active span{
  box-shadow:0 0 14px rgba(86,217,239,.08);
}

@media(max-width:900px){
  .hero.hero-scene{
    min-height:720px;
    align-items:flex-end;
    padding-bottom:120px;
  }
  .hero-bg{object-position:62% center}
  .hero-shade{
    background:
      linear-gradient(0deg,rgba(3,8,16,.94) 0%,rgba(3,8,16,.65) 45%,rgba(3,8,16,.10) 74%),
      linear-gradient(90deg,rgba(3,8,16,.48),transparent);
  }
  .portal-scene img{height:400px}
}
@media(max-width:680px){
  .hero.hero-scene{
    min-height:650px;
    margin:0 -12px;
    padding:54px 20px 112px;
  }
  .hero.hero-scene h1{font-size:5.2rem}
  .hero-bg{object-position:66% center}
  .hero.hero-scene .hero-thesis{
    justify-content:flex-start;
    left:20px;
    right:20px;
  }
  .portal-scene img{height:360px;object-position:center}
  .portal-overlay{left:20px;right:20px}
}


/* =========================================================
   v0.4 — Constellation : émerveillement puis structuration
   ========================================================= */
.constellation-v04{
  overflow:hidden;
  background:#06101a;
}
.constellation-vision{
  position:relative;
  min-height:580px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.constellation-vision>img{
  width:100%;
  height:620px;
  object-fit:cover;
  display:block;
  filter:saturate(.9) brightness(.78);
}
.constellation-vision::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(4,10,18,.94) 0%,rgba(4,10,18,.70) 27%,rgba(4,10,18,.16) 55%,rgba(4,10,18,.03) 100%),
    linear-gradient(180deg,rgba(4,10,18,.06),rgba(4,10,18,.72));
}
.constellation-vision-copy{
  position:absolute;
  z-index:2;
  left:clamp(24px,5vw,72px);
  top:50%;
  transform:translateY(-50%);
  max-width:520px;
}
.constellation-vision-copy h2{
  font-family:Georgia,serif;
  font-size:clamp(2.7rem,5.3vw,5rem);
  line-height:.98;
  letter-spacing:-.035em;
  margin:.35rem 0 1.2rem;
}
.constellation-vision-copy h2 em{
  color:#e6bd74;
  font-style:normal;
}
.constellation-vision-copy>p:last-child{
  color:#cfdae0;
  max-width:44ch;
  font-size:1.05rem;
  line-height:1.58;
}
.constellation-map{
  display:grid;
  grid-template-columns:minmax(240px,.42fr) minmax(560px,1.58fr);
  gap:28px;
  align-items:center;
  padding:clamp(28px,4vw,54px);
  background:
    radial-gradient(circle at 76% 45%,rgba(50,160,190,.07),transparent 36%),
    #07111b;
}
.constellation-map-copy h3{
  font-family:Georgia,serif;
  font-size:clamp(2rem,3.5vw,3.4rem);
  line-height:1.03;
  margin:.45rem 0 .9rem;
}
.constellation-map-copy>p:last-child{
  color:var(--muted);
  max-width:28ch;
  line-height:1.55;
}
.constellation-schema{
  width:100%;
  height:auto;
  display:block;
  border-radius:18px;
  border:1px solid rgba(224,179,90,.18);
  box-shadow:0 22px 54px rgba(0,0,0,.22);
}
@media(max-width:900px){
  .constellation-vision{min-height:520px}
  .constellation-vision>img{height:560px;object-position:58% center}
  .constellation-map{grid-template-columns:1fr}
  .constellation-map-copy>p:last-child{max-width:56ch}
}
@media(max-width:680px){
  .constellation-vision{min-height:560px}
  .constellation-vision>img{height:600px;object-position:64% center}
  .constellation-vision::after{
    background:linear-gradient(0deg,rgba(4,10,18,.96) 0%,rgba(4,10,18,.70) 44%,rgba(4,10,18,.12) 76%);
  }
  .constellation-vision-copy{
    left:20px;right:20px;top:auto;bottom:32px;transform:none;
  }
  .constellation-map{padding:24px 16px}
  .constellation-schema{min-width:720px}
  .constellation-map{overflow-x:auto}
}


/* =========================================================
   v0.5 — Richesse éditoriale / feuille verte / constellation
   ========================================================= */

.constellation-v05 .constellation-vision-copy{max-width:610px}
.constellation-pivot{
  margin-top:1rem!important;
  padding-top:1rem;
  border-top:1px solid rgba(255,255,255,.12);
}
.network-meanings{margin-top:1.35rem;display:grid;gap:.68rem}
.network-meanings p{margin:0;display:grid;grid-template-columns:92px 1fr;gap:10px;align-items:baseline}
.network-meanings strong{color:#e9eef0;font-size:.78rem;letter-spacing:.08em}
.network-meanings span{color:var(--muted);font-size:.9rem}
.network-visual{min-width:0}
.network-paths{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}
.network-paths span{
  border:1px solid var(--line);border-radius:10px;padding:9px 11px;
  color:#aebfc8;font-size:.72rem;line-height:1.35;background:rgba(5,14,22,.5)
}
.constellation-question{
  border-top:1px solid var(--line);
  padding:24px clamp(24px,4vw,54px) 30px;
  text-align:center;background:#06101a
}
.constellation-question p{max-width:850px;margin:auto;font-family:Georgia,serif;font-size:1.25rem;line-height:1.5;color:#dfe8eb}

.door-leaf{overflow:hidden}
.leaf-opening{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.observation-call{font-size:1.1rem!important;color:#e1e9e5!important}
.leaf-layer{
  margin-top:34px;padding:30px 0 4px;border-top:1px solid var(--line);max-width:1020px
}
.leaf-layer h3,.leaf-manifesto h3{
  font-family:Georgia,serif;font-size:clamp(1.8rem,3vw,2.8rem);
  line-height:1.08;margin:.35rem 0 1rem
}
.leaf-layer>p{color:#c5d3da;line-height:1.7;max-width:78ch}
.idea-bridge{
  display:flex;gap:8px;flex-wrap:wrap;align-items:center;
  margin:20px 0;padding:14px 16px;border:1px solid rgba(224,179,90,.18);
  border-radius:14px;background:rgba(224,179,90,.045);color:#d8e2e6;font-size:.78rem;font-weight:800;letter-spacing:.05em
}
.idea-bridge i{color:var(--gold)}
.question-open{
  margin-top:18px!important;padding-left:16px;border-left:2px solid var(--violet);
  color:#d7d0e8!important;font-family:Georgia,serif;font-size:1.08rem
}
.formula-jewel.compact{max-width:410px;margin:20px 0;text-align:left}
.formula-jewel.compact .formula{font-size:3rem}
.leaf-striking{max-width:850px;padding:20px 22px}
.leaf-striking p{font-size:1rem}
.leaf-manifesto{
  margin-top:38px;padding:clamp(26px,4vw,44px);border:1px solid rgba(224,179,90,.25);
  border-radius:20px;background:
    radial-gradient(circle at 82% 18%,rgba(84,154,104,.10),transparent 30%),
    linear-gradient(140deg,rgba(224,179,90,.05),rgba(6,16,25,.72))
}
.leaf-manifesto ul{columns:2;column-gap:34px;margin:18px 0 22px;padding-left:1.2rem}
.leaf-manifesto li{break-inside:avoid;color:#cbd8d7;margin:0 0 .72rem;line-height:1.45}
.leaf-manifesto blockquote{font-size:1.7rem;text-align:center;border-left:0;border-top:1px solid rgba(224,179,90,.25);border-bottom:1px solid rgba(224,179,90,.25)}
.leaf-return{font-family:Georgia,serif;font-size:1.25rem;color:#e7eadf!important;text-align:center}

.aether-exit{
  margin:42px auto 24px;max-width:1000px;display:grid;grid-template-columns:minmax(280px,.9fr) 1.1fr;
  gap:0;border:1px solid rgba(224,179,90,.24);border-radius:22px;overflow:hidden;background:#06101a;text-align:left
}
.aether-exit img{width:100%;height:100%;min-height:360px;object-fit:cover;filter:saturate(.86) brightness(.74)}
.aether-exit-copy{padding:clamp(24px,4vw,38px);align-self:center}
.aether-exit-copy h3{font-family:Georgia,serif;font-size:clamp(1.8rem,3vw,2.8rem);line-height:1.08;margin:.4rem 0 1rem}
.aether-exit-copy>p:last-child{color:var(--muted);line-height:1.55}
.aether-routes{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:18px 0}
.aether-routes span{border:1px solid var(--line);border-radius:10px;padding:9px 11px;color:#c6d5dc;font-size:.76rem}

@media(max-width:900px){
  .leaf-opening{grid-template-columns:1fr}
  .leaf-manifesto ul{columns:1}
  .aether-exit{grid-template-columns:1fr}
  .aether-exit img{height:320px;min-height:0}
}
@media(max-width:680px){
  .network-paths,.aether-routes{grid-template-columns:1fr}
  .network-meanings p{grid-template-columns:76px 1fr}
  .leaf-layer{margin-top:28px}
  .leaf-manifesto{padding:22px 18px}
}


/* =========================================================
   v0.6 — PORTE 1 conforme au canon v1.1
   ========================================================= */

.door-signal-rich{overflow:hidden}

.signal-experience-grid{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);
  gap:28px;
  align-items:stretch;
}
.signal-experience-wrap{min-width:0}
.signal-experience{
  position:relative;
  width:100%;
  aspect-ratio:1672/941;
  display:block;
  padding:0;
  overflow:hidden;
  border:1px solid rgba(86,217,239,.24);
  border-radius:22px;
  background:#000;
  box-shadow:0 28px 70px rgba(0,0,0,.28);
}
.signal-experience:hover{border-color:rgba(86,217,239,.46)}
.signal-experience:focus-visible{outline:2px solid var(--cyan);outline-offset:4px}
.signal-state-image,.signal-state-black{
  position:absolute;inset:0;width:100%;height:100%;
}
.signal-state-image{object-fit:cover;transition:opacity .82s ease}
.signal-state-light{opacity:1}
.signal-state-dim{opacity:0}
.signal-state-black{
  background:#000;
  opacity:0;
  transition:opacity .82s ease;
}
.signal-experience[data-light-state="dim"] .signal-state-light{opacity:0}
.signal-experience[data-light-state="dim"] .signal-state-dim{opacity:1}
.signal-experience[data-light-state="dark"] .signal-state-light,
.signal-experience[data-light-state="dark"] .signal-state-dim{opacity:0}
.signal-experience[data-light-state="dark"] .signal-state-black{opacity:1}

.signal-click-hint{
  position:absolute;left:18px;bottom:18px;z-index:5;
  display:flex;align-items:center;gap:9px;
  padding:8px 12px;border-radius:999px;
  background:rgba(3,9,15,.66);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.14);
  color:#dbe8ed;font-size:.72rem;letter-spacing:.04em;
}
.signal-click-icon{color:var(--cyan)}
.signal-state-badge{
  position:absolute;right:18px;top:18px;z-index:5;
  padding:7px 11px;border-radius:999px;
  background:rgba(3,9,15,.66);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.14);
  color:#edf4f7;font-size:.68rem;font-weight:900;letter-spacing:.12em;
}
.signal-experience[data-light-state="dark"] .signal-click-hint,
.signal-experience[data-light-state="dark"] .signal-state-badge{
  border-color:rgba(152,120,215,.24);
}

.signal-state-nav{
  display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:12px;
}
.signal-state-choice{
  border:0;background:transparent;color:var(--muted);
  display:flex;gap:7px;align-items:center;padding:5px 8px;font-size:.76rem;
}
.signal-state-choice span{
  width:7px;height:7px;border-radius:50%;
  border:1px solid rgba(255,255,255,.36);background:transparent;
}
.signal-state-choice.active{color:#e5eff3}
.signal-state-choice.active span{background:var(--cyan);border-color:var(--cyan);box-shadow:0 0 10px rgba(86,217,239,.45)}

.signal-experience-copy{
  display:flex;flex-direction:column;justify-content:center;
  padding:26px;border:1px solid var(--line2);border-radius:20px;
  background:
    radial-gradient(circle at 85% 15%,rgba(86,217,239,.06),transparent 32%),
    rgba(4,12,20,.56);
}
.signal-experience-copy h3{
  font-family:Georgia,serif;font-size:clamp(1.7rem,3vw,2.7rem);line-height:1.08;margin:.45rem 0 .85rem;
}
.signal-experience-copy>p{color:#c8d5db;line-height:1.62}
.signal-state-insight{
  margin-top:16px;padding:16px;border-left:2px solid var(--gold);
  background:rgba(224,179,90,.055);
}
.signal-state-insight strong{display:block;color:var(--gold);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase}
.signal-state-insight p{margin:.4rem 0 0;color:#d7e0e4;line-height:1.5}
.signal-state-counter{display:flex;gap:6px;margin-top:18px}
.signal-state-counter span{width:26px;height:3px;border-radius:3px;background:rgba(255,255,255,.12)}
.signal-state-counter span.active{background:var(--cyan)}

.signal-reframe{
  display:grid;grid-template-columns:.7fr 1.3fr;gap:34px;
  margin-top:38px;padding:34px 0;border-top:1px solid var(--line);
}
.signal-reframe h3,.signal-chain-section h3,.signal-epistemology h3,.signal-black-question h3,
.signal-evolution-question h3,.signal-philo-grid h3{
  font-family:Georgia,serif;
}
.signal-reframe h3{font-size:clamp(1.9rem,3vw,3rem);line-height:1.05;margin:.35rem 0}
.signal-reframe-copy>p{color:#c5d2d8;line-height:1.68}

.signal-chain-section{padding:30px 0;border-top:1px solid var(--line)}
.signal-chain-section>p{color:#c5d2d8;line-height:1.68;max-width:82ch}
.signal-chain{display:flex;flex-wrap:wrap;gap:9px;align-items:center;margin:20px 0}
.signal-chain span{
  border:1px solid var(--line2);border-radius:999px;padding:8px 12px;
  color:#dbe7ec;background:rgba(10,28,40,.62);font-size:.82rem
}
.signal-chain i{color:var(--gold)}
.signal-pivot{font-size:clamp(1.35rem,2.4vw,2rem);max-width:880px}

.signal-epistemology{padding:34px 0;border-top:1px solid var(--line)}
.signal-epistemology-head{max-width:900px}
.signal-epistemology-head h3{font-size:clamp(2rem,4vw,3.4rem);line-height:1.02;margin:.35rem 0 1rem}
.signal-epistemology-head>p{color:#c4d1d8;line-height:1.66}
.epistemology-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:24px}
.epistemology-grid article{
  border:1px solid var(--line);border-radius:18px;padding:20px;background:rgba(8,20,31,.58)
}
.epistemology-grid span{font-size:.72rem;letter-spacing:.12em;color:var(--cyan);font-weight:900}
.epistemology-grid h4{font-family:Georgia,serif;font-size:1.35rem;margin:.45rem 0 .6rem}
.epistemology-grid p{color:#bfced5;line-height:1.5;margin:0}
.signal-question-card{
  margin-top:16px;padding:18px 20px;border:1px solid rgba(152,120,215,.30);
  border-radius:16px;background:rgba(152,120,215,.055)
}
.signal-question-card span{color:#b69be5;font-size:.72rem;letter-spacing:.12em;font-weight:900}
.signal-question-card p{font-family:Georgia,serif;font-size:1.25rem;margin:.45rem 0 0}

.signal-black-question{
  display:grid;grid-template-columns:.65fr 1.35fr;gap:34px;align-items:start;
  margin-top:6px;padding:34px 0;border-top:1px solid var(--line);
}
.signal-black-question h3{font-size:clamp(2rem,3.6vw,3.2rem);line-height:1.04;margin:.35rem 0}
.signal-black-question>div:last-child>p{color:#c4d1d8;line-height:1.68}

.eye-bridge{
  position:relative;margin:36px 0 0;border-radius:22px;overflow:hidden;
  min-height:540px;border:1px solid rgba(224,179,90,.20);
}
.eye-bridge>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(.9) brightness(.73)}
.eye-bridge::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(4,10,18,.95) 0%,rgba(4,10,18,.77) 35%,rgba(4,10,18,.14) 67%,rgba(4,10,18,.05)),
    linear-gradient(0deg,rgba(4,10,18,.72),transparent 45%);
}
.eye-bridge-overlay{
  position:relative;z-index:2;width:min(590px,92%);padding:clamp(28px,5vw,54px);
}
.eye-bridge-overlay h3{
  font-family:Georgia,serif;font-size:clamp(2.2rem,4vw,3.8rem);line-height:1.02;margin:.35rem 0 1rem
}
.eye-bridge-overlay>p{color:#d0dce1;line-height:1.62}
.eye-bridge-overlay blockquote{font-size:1.3rem}

.signal-evolution-question{
  margin-top:24px;padding:28px 0;border-top:1px solid var(--line)
}
.signal-evolution-question h3{font-size:clamp(2rem,3.7vw,3.2rem);line-height:1.05;margin:.35rem 0 .9rem}
.signal-evolution-question>p{color:#c4d1d8;line-height:1.67;max-width:88ch}

.signal-philo-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px
}
.signal-philo-grid article{
  border:1px solid var(--line);border-radius:18px;padding:22px;background:rgba(8,20,31,.58)
}
.signal-philo-grid article.einstein-card{border-color:rgba(224,179,90,.24);background:rgba(224,179,90,.04)}
.signal-philo-grid h3{font-size:1.45rem;line-height:1.1;margin:.5rem 0 .75rem}
.signal-philo-grid p:last-child{color:#c3d1d9;line-height:1.55}

.signal-frontier{
  display:flex;gap:15px;align-items:flex-start;margin-top:18px;
  border:1px solid rgba(152,120,215,.26);border-radius:16px;padding:18px;
  background:linear-gradient(135deg,rgba(152,120,215,.06),rgba(6,16,25,.58))
}
.signal-frontier p{margin:.35rem 0;color:#c9d5db;line-height:1.52}
.micro-link{
  margin-top:4px;border:0;background:transparent;color:#ac95d7;padding:0;font-size:.78rem;text-align:left
}

@media(max-width:980px){
  .signal-experience-grid,.signal-reframe,.signal-black-question{grid-template-columns:1fr}
  .epistemology-grid,.signal-philo-grid{grid-template-columns:1fr}
}
@media(max-width:680px){
  .signal-experience-copy{padding:20px 17px}
  .signal-click-hint{left:10px;bottom:10px;font-size:.66rem}
  .signal-state-badge{right:10px;top:10px}
  .signal-chain{gap:6px}
  .signal-chain span{padding:7px 9px;font-size:.74rem}
  .eye-bridge{min-height:620px}
  .eye-bridge>img{object-position:64% center}
  .eye-bridge::after{
    background:linear-gradient(0deg,rgba(4,10,18,.96) 0%,rgba(4,10,18,.75) 48%,rgba(4,10,18,.08) 82%);
  }
  .eye-bridge-overlay{position:absolute;left:0;right:0;bottom:0;padding:24px 18px}
}

@media(prefers-reduced-motion:reduce){
  .signal-state-image,.signal-state-black{transition:none}
}


/* =========================================================
   v0.7 — PORTE 2 : constellation locale couleur
   ========================================================= */

.forest-rgb-cue{
  margin:.8rem 0 0;padding-top:.8rem;border-top:1px solid var(--line);
  color:#a9bbc4;font-size:.84rem;line-height:1.5
}
.forest-rgb-cue strong{color:#d8e5e9}

.color-constellation{
  margin-top:34px;padding:34px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)
}
.color-constellation-head{max-width:880px}
.color-constellation-head h3{
  font-family:Georgia,serif;font-size:clamp(2rem,3.7vw,3.4rem);line-height:1.03;margin:.4rem 0 1rem
}
.color-constellation-head>p:last-child{color:#c2d0d7;line-height:1.65;max-width:78ch}

.color-door-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:24px}
.color-door-card{
  min-height:190px;text-align:left;border:1px solid var(--line2);border-radius:18px;padding:18px;
  background:
    radial-gradient(circle at 86% 15%,rgba(86,217,239,.05),transparent 34%),
    rgba(6,17,27,.66);
  color:#e5eef1;transition:transform .18s ease,border-color .18s ease,background .18s ease
}
.color-door-card:hover,.color-door-card[aria-expanded="true"]{
  border-color:rgba(224,179,90,.42);background:rgba(12,27,39,.86);transform:translateY(-2px)
}
.color-door-card:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.color-door-card strong{display:block;font-family:Georgia,serif;font-size:1.32rem;margin:.75rem 0 .45rem}
.color-door-card small{display:block;color:#aebfc8;line-height:1.45}
.color-door-symbol{
  width:46px;height:46px;border-radius:50%;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.13);font-size:1.45rem;background:#07131e
}
.spectrum-symbol{background:linear-gradient(135deg,#6d39ba,#2499e0,#25c26e,#f0c52a,#d93632)}
.pixel-symbol{color:#bfe8ef}
.pigment-symbol{color:#e8be6e}
.magenta-symbol{background:#c228a6;box-shadow:0 0 20px rgba(194,40,166,.18)}

.color-door-panels{margin-top:14px}
.color-door-panel{
  border:1px solid rgba(224,179,90,.22);border-radius:20px;padding:clamp(22px,4vw,36px);
  background:
    radial-gradient(circle at 83% 12%,rgba(86,217,239,.05),transparent 30%),
    linear-gradient(145deg,rgba(224,179,90,.035),rgba(6,17,27,.88))
}
.color-door-panel h4{
  font-family:Georgia,serif;font-size:clamp(1.8rem,3vw,2.8rem);line-height:1.06;margin:.4rem 0 .9rem
}
.color-door-panel p{color:#c5d3da;line-height:1.66}
.color-diagram,.pixel-diagram{width:100%;height:auto;display:block;border-radius:16px;margin:20px 0;border:1px solid var(--line)}
.color-door-panel blockquote{font-size:1.2rem}

.rgb-panel-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:26px;align-items:start}
.pixel-diagram{margin-bottom:0}
.rgb-mixer{
  position:sticky;top:100px;border:1px solid var(--line2);border-radius:18px;padding:20px;background:#06111b
}
.rgb-preview{
  width:100%;aspect-ratio:16/9;border-radius:14px;margin-bottom:16px;
  background:rgb(65,128,74);border:1px solid rgba(255,255,255,.12);
  box-shadow:inset 0 0 50px rgba(255,255,255,.04)
}
.rgb-mixer label{display:grid;grid-template-columns:64px 1fr;gap:12px;align-items:center;margin:12px 0;color:#cbd8de}
.rgb-mixer input{width:100%;accent-color:var(--cyan)}
.rgb-mixer output{
  display:block;margin-top:14px;padding:9px 11px;border-radius:9px;background:rgba(255,255,255,.05);
  color:#edf4f6;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.82rem
}
.rgb-caveat{font-size:.8rem!important;color:#9fb2bc!important;margin-top:14px!important}

.color-striking{margin:24px 0}
.metamerism-compare{
  display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center;margin:22px 0
}
.metamerism-compare>div:not(.metamerism-equals){
  border:1px solid var(--line);border-radius:14px;padding:16px;background:rgba(4,12,20,.5)
}
.metamerism-compare span{font-size:.7rem;font-weight:900;letter-spacing:.1em;color:#dfe8eb}
.metamerism-compare small{display:block;color:#899fa9;margin-top:8px}
.metamerism-equals{color:var(--gold);font-family:Georgia,serif;text-align:center;font-size:1rem}
.spectrum-sketch{height:80px;display:flex;align-items:flex-end;gap:5px;margin-top:10px}
.spectrum-sketch i{display:block;flex:1;border-radius:4px 4px 0 0}
.spectrum-sketch.broad i:nth-child(1){height:25%;background:#6041b5}
.spectrum-sketch.broad i:nth-child(2){height:38%;background:#3475d0}
.spectrum-sketch.broad i:nth-child(3){height:62%;background:#22a5b7}
.spectrum-sketch.broad i:nth-child(4){height:90%;background:#42b859}
.spectrum-sketch.broad i:nth-child(5){height:75%;background:#b5c83a}
.spectrum-sketch.broad i:nth-child(6){height:39%;background:#e89431}
.spectrum-sketch.broad i:nth-child(7){height:21%;background:#d84c3c}
.spectrum-sketch.peaks i:nth-child(1){height:38%;background:#ef3d43}
.spectrum-sketch.peaks i:nth-child(2){height:92%;background:#38cf74}
.spectrum-sketch.peaks i:nth-child(3){height:28%;background:#3988ef}

.mixing-compare{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:22px 0}
.mixing-card{border:1px solid var(--line);border-radius:18px;padding:20px;background:rgba(5,14,22,.55)}
.mixing-card>span{font-size:.72rem;font-weight:900;letter-spacing:.1em;color:#dce7eb}
.mixing-card p{font-size:.92rem}
.additive-visual,.subtractive-visual{height:180px;position:relative;margin:18px auto;width:240px}
.additive-visual b,.subtractive-visual b{
  position:absolute;width:130px;height:130px;border-radius:50%;mix-blend-mode:screen;opacity:.86
}
.additive-visual .r{background:#f03b45;left:18px;top:18px}
.additive-visual .g{background:#35d06f;left:92px;top:18px}
.additive-visual .b{background:#3b82ef;left:55px;top:72px}
.subtractive-visual b{mix-blend-mode:multiply;opacity:.72}
.subtractive-visual .c{background:#15bfd0;left:18px;top:18px}
.subtractive-visual .m{background:#df35b4;left:92px;top:18px}
.subtractive-visual .y{background:#efd83c;left:55px;top:72px}

.magenta-grid{display:grid;grid-template-columns:1fr .85fr;gap:28px;align-items:center}
.magenta-visual{border:1px solid var(--line);border-radius:18px;padding:22px;background:#06111b}
.mini-spectrum{
  height:38px;border-radius:999px;
  background:linear-gradient(90deg,#6d39ba,#3d56dc,#2796e0,#25c26e,#cfda31,#f0c52a,#ef7b2a,#d93632)
}
.magenta-bridge{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:center;margin-top:24px;text-align:center}
.magenta-bridge span{color:#9fb1ba;font-size:.74rem}
.magenta-bridge strong{
  padding:13px 17px;border-radius:999px;background:#bd27aa;color:white;box-shadow:0 0 28px rgba(189,39,170,.25)
}
.magenta-visual small{display:block;color:#899fa9;line-height:1.45;margin-top:16px;text-align:center}

@media(max-width:980px){
  .color-door-grid{grid-template-columns:1fr 1fr}
  .rgb-panel-grid,.magenta-grid{grid-template-columns:1fr}
  .rgb-mixer{position:static}
}
@media(max-width:680px){
  .color-door-grid{grid-template-columns:1fr}
  .mixing-compare,.metamerism-compare{grid-template-columns:1fr}
  .metamerism-equals{padding:2px 0}
}
@media(prefers-reduced-motion:reduce){
  .color-door-card{transition:none}
}


/* =========================================================
   v0.8 — Porte 2 : au-delà du visible
   ========================================================= */
@media(min-width:1180px){.color-door-grid{grid-template-columns:repeat(5,1fr)}}
.invisible-symbol{
  color:#cbb8ef;border-color:rgba(152,120,215,.35);
  background:radial-gradient(circle at 50% 50%,rgba(152,120,215,.28),rgba(7,19,30,.95) 60%);
  box-shadow:inset 0 0 20px rgba(152,120,215,.08)
}
.invisible-card[aria-expanded="true"]{border-color:rgba(152,120,215,.58);box-shadow:0 14px 38px rgba(54,34,84,.12)}
.invisible-worlds{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:24px 0}
.invisible-worlds article{border:1px solid var(--line);border-radius:17px;padding:19px;background:rgba(5,14,22,.58)}
.invisible-worlds h5{font-family:Georgia,serif;font-size:1.25rem;line-height:1.12;margin:.55rem 0 .65rem;color:#e8eff1}
.invisible-worlds p{font-size:.91rem;margin:.55rem 0}
.band-tag{display:inline-block;font-size:.66rem;letter-spacing:.12em;font-weight:900;padding:5px 8px;border-radius:999px;border:1px solid var(--line2)}
.band-tag.ir,.band-tag.webb{color:#e3bc77;border-color:rgba(224,179,90,.36)}
.band-tag.cmb{color:#bba5e7;border-color:rgba(152,120,215,.42)}
.band-tag.high{color:#df9fa8;border-color:rgba(216,100,120,.35)}
.mini-strike{padding-top:.7rem;border-top:1px solid rgba(255,255,255,.08);color:#dce6e9!important;font-family:Georgia,serif}
.invisible-formula{margin:24px 0;max-width:480px}.invisible-striking{margin-top:22px}
@media(max-width:760px){.invisible-worlds{grid-template-columns:1fr}}


/* =========================================================
   v0.9 — PORTE 5 : SPECTRES / INVISIBLE / IMAGERIE
   ========================================================= */

.door-spectrum-rich{overflow:hidden}
.spectrum-hero,.human-thermal,.grimoire-section{
  position:relative;overflow:hidden;border:1px solid rgba(224,179,90,.18);border-radius:22px;margin:4px 0 32px
}
.spectrum-hero{min-height:560px}
.spectrum-hero>img,.human-thermal>img,.grimoire-section>img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block
}
.spectrum-hero>img{filter:saturate(.9) brightness(.72)}
.spectrum-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(4,10,18,.95) 0%,rgba(4,10,18,.76) 38%,rgba(4,10,18,.08) 72%)
}
.spectrum-hero-copy{
  position:relative;z-index:2;padding:clamp(32px,5vw,58px);max-width:650px
}
.spectrum-hero-copy h3,.spectra-reading h3,.quantum-bridge h3,.grimoire-copy h3,
.human-thermal-copy h3,.scale-explorer h3,.planck-copy h3,.invisible-spectrum-head h3,
.body-windows h3,.spectrum-epistemology h3{
  font-family:Georgia,serif;line-height:1.04;margin:.4rem 0 .9rem
}
.spectrum-hero-copy h3{font-size:clamp(2.4rem,4.6vw,4.3rem)}
.spectrum-hero-copy>p{color:#d2dde2;line-height:1.62}
.spectrum-hero-copy blockquote{font-size:1.5rem}
.spectrum-hero-copy small{color:#899da7}

.spectra-reading{display:grid;grid-template-columns:.75fr 1.25fr;gap:28px;padding:30px 0;border-top:1px solid var(--line)}
.spectra-reading-copy h3{font-size:clamp(2rem,3.2vw,3.1rem)}
.spectra-reading-copy>p{color:#c5d2d8;line-height:1.65}
.spectra-tabs{display:flex;flex-wrap:wrap;gap:7px;margin:18px 0 12px}
.spectra-tabs button{
  border:1px solid var(--line2);background:#071520;color:#b9c8cf;border-radius:999px;padding:8px 12px
}
.spectra-tabs button.active{border-color:var(--cyan);color:#e7f3f5;background:rgba(86,217,239,.08)}
.spectra-mode-copy{color:#b9c9d0;font-size:.88rem;line-height:1.5}
.spectra-interactive{
  border:1px solid var(--line2);border-radius:18px;padding:22px;background:#050b12;align-self:center
}
.spectrum-live{position:relative;height:130px;border-radius:12px;overflow:hidden}
.continuum-live{background:linear-gradient(90deg,#5522a0,#3947d3,#168fdb,#1fc36b,#d3db2f,#f0cf32,#ed7e2d,#d83230)}
.absorption-live,.emission-live{position:absolute;opacity:0;pointer-events:none}
.spectra-interactive[data-mode="absorption"] .continuum-live{opacity:0}
.spectra-interactive[data-mode="absorption"] .absorption-live{position:relative;opacity:1;background:linear-gradient(90deg,#5522a0,#3947d3,#168fdb,#1fc36b,#d3db2f,#f0cf32,#ed7e2d,#d83230)}
.spectra-interactive[data-mode="emission"] .continuum-live{opacity:0}
.spectra-interactive[data-mode="emission"] .emission-live{position:relative;opacity:1;background:#010204}
.absorption-live i,.emission-live i{
  position:absolute;left:var(--x);top:0;bottom:0;width:4px;transform:translateX(-50%)
}
.absorption-live i{background:#030405;opacity:.86}
.emission-live i{background:var(--c);box-shadow:0 0 13px var(--c)}
.spectrum-axis{display:flex;justify-content:space-between;color:#879ba6;font-size:.72rem;margin-top:8px}
.spectral-lines-key{display:grid;grid-template-columns:repeat(4,1fr);gap:5px;margin-top:10px;color:#a9bbc4;font-size:.67rem}
.spectrum-reference-svg{width:100%;height:auto;display:block;border-radius:18px;border:1px solid var(--line);margin:10px 0 24px}
.spectrum-strike{margin:22px 0}

.quantum-bridge{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;padding:34px 0;border-top:1px solid var(--line)}
.quantum-copy h3{font-size:clamp(2.1rem,3.4vw,3.3rem)}
.quantum-copy>p{color:#c3d0d6;line-height:1.68}
.energy-levels{position:relative;min-height:330px;border:1px solid var(--line2);border-radius:18px;background:#06111b;padding:40px}
.level{position:absolute;left:17%;right:17%;height:1px;background:#87a7b7}
.level span{position:absolute;right:100%;margin-right:12px;top:-11px;color:#b8cad3;font-family:Georgia,serif}
.level.l3{top:68px}.level.l2{top:158px}.level.l1{top:265px}
.transition{position:absolute;text-align:center;font-size:.76rem;letter-spacing:.06em}
.transition b{display:block;font-size:4rem;line-height:.8}
.transition.up{left:37%;top:120px;color:var(--cyan)}
.transition.down{right:29%;top:119px;color:var(--gold)}

.grimoire-section{min-height:620px;display:grid;grid-template-columns:.9fr 1.1fr}
.grimoire-section>img{filter:brightness(.5) saturate(.84);object-position:center}
.grimoire-section::after{
  content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,10,18,.32),rgba(4,10,18,.92) 48%,rgba(4,10,18,.98))
}
.grimoire-copy{grid-column:2;position:relative;z-index:2;padding:clamp(28px,5vw,52px)}
.grimoire-copy h3{font-size:clamp(2.2rem,3.8vw,3.6rem)}
.formula-stack{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.formula-stack article{border:1px solid rgba(224,179,90,.18);border-radius:14px;padding:16px;background:rgba(6,16,24,.7)}
.formula-stack .formula{font-family:Georgia,serif;font-size:1.55rem;color:#ecd089}
.formula-stack p{color:#b9c8cf;line-height:1.45;font-size:.86rem}
.planck-details{margin-top:12px;border:1px solid var(--line2);border-radius:14px;padding:14px}
.planck-details summary{cursor:pointer;color:#c8d9df;font-weight:700}
.planck-formula{margin:14px 0;font-size:1rem!important;overflow-wrap:anywhere}

.human-thermal{min-height:600px}
.human-thermal>img{filter:saturate(.93) brightness(.82)}
.human-thermal::after{
  content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,10,18,.08) 0%,rgba(4,10,18,.23) 44%,rgba(4,10,18,.90) 67%)
}
.human-thermal-copy{position:relative;z-index:2;margin-left:auto;width:min(610px,52%);padding:clamp(30px,5vw,54px)}
.human-thermal-copy h3{font-size:clamp(2.1rem,3.8vw,3.5rem)}
.human-thermal-copy>p{color:#d0dce1;line-height:1.64}

.scale-explorer,.planck-explorer,.invisible-spectrum-explorer,.body-windows,.spectrum-epistemology{
  padding:34px 0;border-top:1px solid var(--line)
}
.scale-explorer-head,.invisible-spectrum-head{max-width:900px}
.scale-explorer h3,.invisible-spectrum-head h3,.body-windows h3,.spectrum-epistemology h3{font-size:clamp(2rem,3.5vw,3.3rem)}
.scale-buttons,.temperature-presets,.em-band-buttons{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}
.scale-buttons button,.temperature-presets button,.em-band-buttons button{
  border:1px solid var(--line2);background:#071520;color:#b5c7cf;border-radius:999px;padding:8px 12px
}
.scale-buttons button.active,.temperature-presets button.active,.em-band-buttons button.active{
  border-color:var(--gold);color:#f0e6d2;background:rgba(224,179,90,.07)
}
.scale-display{border:1px solid var(--line2);border-radius:16px;padding:20px;background:rgba(7,18,28,.58);max-width:780px}
.scale-display strong{font-family:Georgia,serif;font-size:1.7rem}
.scale-display p{color:#b9c8cf;line-height:1.55}
.scale-ruler{height:24px;margin:18px 0 4px;position:relative;border-bottom:2px solid #547080}
.scale-ruler .mark{position:absolute;bottom:-5px;width:10px;height:10px;border-radius:50%;background:var(--cyan)}
.visible-mark{left:8%}.human-mark{left:38%}.hair-mark{left:66%}.mm-mark{left:94%}
.scale-caveat{color:#9fb1ba;font-size:.82rem}

.planck-explorer{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:center}
.planck-copy h3{font-size:clamp(2rem,3.4vw,3.2rem)}
.planck-copy>p{color:#c2d0d7;line-height:1.6}
.temp-slider{display:grid;grid-template-columns:100px 1fr;gap:12px;align-items:center;color:#b9c8cf;margin-top:14px}
.temp-slider input{width:100%;accent-color:var(--gold)}
.temp-readout{display:flex;gap:18px;align-items:baseline;margin-top:12px}
.temp-readout span{color:#b9c8cf}.temp-readout strong{font-family:Georgia,serif;font-size:1.45rem;color:#e8cb86}
.planck-chart{border:1px solid var(--line2);border-radius:18px;padding:12px;background:#06111b}
.chart-bg{fill:#07131d}.axis{stroke:#667f8c;stroke-width:1}.planck-path{fill:none;stroke:#e8b85c;stroke-width:3}
.peak-line{stroke:#8bdbea;stroke-width:1.5;stroke-dasharray:5 5}.peak-label{fill:#9ee1ed;font-family:Arial,sans-serif;font-size:14px}
.axis-label,.axis-title{fill:#899fa9;font-family:Arial,sans-serif;font-size:13px}.axis-title{font-size:14px}

.em-band-display{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;border:1px solid var(--line2);border-radius:18px;padding:22px;background:#06111b
}
.em-band-display h4{font-family:Georgia,serif;font-size:1.7rem;margin:.4rem 0 .8rem}
.em-band-display p{color:#c0ced5;line-height:1.55}
.em-kicker{font-size:.7rem;letter-spacing:.12em;color:var(--violet);font-weight:900}
.em-facts{border-left:1px solid var(--line);padding-left:20px}
.radiation-strike{
  margin-top:16px;border:1px solid rgba(152,120,215,.26);border-radius:16px;padding:18px;background:rgba(152,120,215,.05)
}
.radiation-strike span{font-size:.7rem;letter-spacing:.12em;color:#bba3e5;font-weight:900}
.radiation-strike p{color:#c7d3d9;line-height:1.55}

.body-window-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:20px 0}
.body-window-grid article{border:1px solid var(--line);border-radius:16px;padding:16px;background:rgba(6,17,27,.58)}
.body-window-grid span{font-size:.65rem;letter-spacing:.1em;color:#b69be3;font-weight:900}
.body-window-grid strong{display:block;font-family:Georgia,serif;font-size:1.2rem;margin:.45rem 0}
.body-window-grid p{color:#aebfc7;font-size:.84rem;line-height:1.45}
.spectrum-epistemology>p{color:#c1cfd6;line-height:1.65;max-width:85ch}

@media(max-width:980px){
  .spectra-reading,.quantum-bridge,.planck-explorer{grid-template-columns:1fr}
  .grimoire-section{display:block}
  .grimoire-section::after{background:rgba(4,10,18,.88)}
  .grimoire-copy{grid-column:auto}
  .human-thermal-copy{width:auto;margin:0}
  .human-thermal::after{background:linear-gradient(0deg,rgba(4,10,18,.95),rgba(4,10,18,.35) 65%)}
  .body-window-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .spectrum-hero{min-height:620px}.spectrum-hero>img{object-position:35% center}
  .spectral-lines-key{grid-template-columns:1fr 1fr}
  .formula-stack{grid-template-columns:1fr}
  .human-thermal{min-height:660px}.human-thermal>img{object-position:36% center}
  .human-thermal-copy{position:absolute;left:0;right:0;bottom:0}
  .em-band-display{grid-template-columns:1fr}.em-facts{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:14px}
  .body-window-grid{grid-template-columns:1fr}
}


/* =========================================================
   v1.0 — PORTE 3 : évolution du regard
   ========================================================= */

.door-evolution-rich{overflow:hidden}
.evolution-hero{
  position:relative;min-height:610px;border:1px solid rgba(224,179,90,.20);
  border-radius:22px;overflow:hidden;margin-bottom:34px
}
.evolution-hero>img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(.9) brightness(.72)
}
.evolution-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(3,10,16,.94) 0%,rgba(3,10,16,.68) 40%,rgba(3,10,16,.09) 70%)
}
.evolution-hero-copy{position:relative;z-index:2;max-width:650px;padding:clamp(30px,5vw,58px)}
.evolution-hero-copy h3,.gene-to-perception h3,.mammal-comparison h3,.duplication-strike h3,
.adaptation-hypotheses h3,.x-linked-note h3,.evolution-philo h3{
  font-family:Georgia,serif;line-height:1.04;margin:.4rem 0 .9rem
}
.evolution-hero-copy h3{font-size:clamp(2.5rem,4.6vw,4.5rem)}
.evolution-hero-copy>p{color:#d0dce1;line-height:1.65}
.evolution-hero-copy blockquote{font-size:1.5rem}

.gene-to-perception{
  display:grid;grid-template-columns:.85fr 1.15fr;gap:30px;align-items:center;
  padding:34px 0;border-top:1px solid var(--line)
}
.gene-to-perception h3{font-size:clamp(2rem,3.4vw,3.3rem)}
.gene-to-perception>div:first-child>p{color:#c4d2d8;line-height:1.65}
.gene-chain{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.gene-chain span{
  border:1px solid var(--line2);border-radius:999px;padding:9px 12px;background:#071520;color:#dce8ec;font-size:.82rem
}
.gene-chain i{color:var(--gold)}

.opsin-figure{margin:18px 0 34px}
.opsin-figure img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:20px;background:#06111b}

.mammal-comparison{padding:34px 0;border-top:1px solid var(--line)}
.mammal-comparison-head{max-width:900px}
.mammal-comparison h3{font-size:clamp(2rem,3.6vw,3.35rem)}
.mammal-comparison-head>p{color:#c2d0d7;line-height:1.65}
.vision-system-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0 12px}
.vision-system-tabs button{
  border:1px solid var(--line2);background:#071520;color:#b7c7ce;border-radius:999px;padding:9px 14px
}
.vision-system-tabs button.active,.vision-system-tabs button[aria-selected="true"]{
  border-color:var(--cyan);color:#e9f5f6;background:rgba(86,217,239,.08)
}
.vision-system-display{
  display:grid;grid-template-columns:.75fr 1.25fr;gap:20px;
  border:1px solid var(--line2);border-radius:18px;padding:22px;background:#06111b
}
.vision-system-display h4{font-family:Georgia,serif;font-size:1.8rem;margin:.4rem 0 .8rem}
.vision-system-display p{color:#c0ced5;line-height:1.55}
.vision-kicker{font-size:.7rem;letter-spacing:.12em;color:var(--cyan);font-weight:900}
.vision-facts{border-left:1px solid var(--line);padding-left:20px}

.duplication-strike{
  margin:12px 0 0;padding:34px;border:1px solid rgba(152,120,215,.26);
  border-radius:20px;background:linear-gradient(135deg,rgba(152,120,215,.06),rgba(6,16,25,.62))
}
.duplication-strike h3{font-size:clamp(2rem,3.5vw,3.35rem)}
.duplication-strike>p{color:#c5d2d8;line-height:1.65}
.duplication-chain{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:20px 0}
.duplication-chain span{
  padding:8px 11px;border-radius:999px;border:1px solid rgba(152,120,215,.30);color:#d9cdf0;background:#0d1320
}
.duplication-chain i{color:var(--gold)}

.adaptation-hypotheses,.x-linked-note,.evolution-philo{
  padding:34px 0;border-top:1px solid var(--line)
}
.adaptation-head{max-width:900px}
.adaptation-hypotheses h3,.x-linked-note h3,.evolution-philo h3{font-size:clamp(2rem,3.4vw,3.2rem)}
.adaptation-head>p,.x-linked-note>p,.evolution-philo>p{color:#c1cfd6;line-height:1.65;max-width:90ch}
.x-linked-note{border-top-color:rgba(224,179,90,.20)}
.evolution-philo{border-top-color:rgba(152,120,215,.24)}

@media(max-width:900px){
  .gene-to-perception,.vision-system-display{grid-template-columns:1fr}
  .vision-facts{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:14px}
}
@media(max-width:680px){
  .evolution-hero{min-height:700px}
  .evolution-hero>img{object-position:58% center}
  .evolution-hero::after{background:linear-gradient(0deg,rgba(3,10,16,.95) 0%,rgba(3,10,16,.7) 48%,rgba(3,10,16,.08) 82%)}
  .evolution-hero-copy{position:absolute;left:0;right:0;bottom:0;padding:24px 18px}
}


/* Navigation d’intégration au site : le contenu VOIR reste autonome. */
.topbar{gap:16px}
.site-return{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;margin-left:auto}
.site-return a,.sources-note a{color:var(--cyan2);text-underline-offset:.2em}
.site-return a{font-size:.82rem;text-decoration:none;padding:8px 4px}
.site-return a:hover{text-decoration:underline}
.site-return-bottom{margin:0 0 18px;justify-content:flex-start}
.door{scroll-margin-top:166px}
.sources-page{max-width:920px;padding-top:40px;line-height:1.75}
.sources-page h1{font-size:clamp(1.8rem,4vw,3rem);line-height:1.2}
.sources-page h2{margin-top:2rem;line-height:1.3}
.sources-page li{margin:.75rem 0}
.sources-page a{color:var(--cyan2);overflow-wrap:anywhere}
.sources-page code{white-space:normal;overflow-wrap:anywhere}
@media(max-width:600px){
  .topbar{height:100px;display:grid;grid-template-columns:1fr auto;padding:8px 14px;gap:4px 8px}
  .site-return{grid-column:1 / -1;grid-row:2;margin:0}
  .constellation-toggle{grid-row:1;grid-column:2}
  .spiral-nav{top:100px}
  .door{scroll-margin-top:196px}
  .site-return-bottom{justify-content:flex-start}
}