/* ================= chrome du laboratoire ================= */
body{padding-top:128px}
#labar{position:fixed;bottom:0;left:0;right:0;z-index:80;background:var(--nuit);
  color:var(--clair);display:flex;align-items:center;justify-content:center;
  gap:14px;padding:7px 20px;box-shadow:0 -1px 0 rgba(255,247,203,.3)}
#labar .lt{font-size:9.5px;letter-spacing:.24em;text-transform:uppercase;
  color:rgba(255,247,203,.75);text-align:center}
.nuitp .chap{color:var(--clair)}
.nuitp .clib{opacity:.5}
.illu-t{max-width:880px;margin:-16px auto 8px;padding:0 24px}
.illu-t img{width:100%;height:auto;display:block}
.etapv{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
  text-align:left;margin:14px 0 26px}
.ev{border:1px solid rgba(22,59,53,.14);background:var(--blanc);
  padding:20px 22px}
.ev .en{display:inline-flex;width:30px;height:30px;border-radius:50%;
  background:var(--vert);color:var(--blanc);align-items:center;
  justify-content:center;font-size:15px;margin-bottom:10px}
.ev b{display:block;font-size:19px;font-weight:400;margin:0 0 6px}
.ev p{font-size:14.5px;line-height:1.65;margin:0}
@media (max-width:860px){.etapv{grid-template-columns:1fr}}
.chap-x{padding-left:0;padding-right:0;padding-bottom:18px}
.chap-x .clib{height:40px;opacity:.45}
.chap-x .cnum{font-size:26px;opacity:.45}
.chap-x .clab{font-size:14px;letter-spacing:.34em;opacity:.88}
/* ================= gabarit ================= */
.lx-tete{text-align:center;max-width:64ch;margin:26px auto 54px;padding:0 24px}
.lx-tete h1{font-family:'Recoleta',Georgia,serif;font-weight:400;
  font-size:clamp(30px,3.4vw,48px);line-height:1.12;margin:10px 0 14px}
.lx-tete .chapo{font-size:18px;line-height:1.65;margin:0}
.lx-note{font-size:12.5px;opacity:.5;margin-top:8px}
.lx-cta{display:inline-flex;align-items:center;justify-content:center;
  min-height:52px;padding:0 34px;background:var(--vert);color:var(--blanc);
  font-size:12px;letter-spacing:.16em;text-transform:uppercase}
.lx-cta:hover{background:var(--nuit)}
.rev{opacity:0;transform:translateY(16px);
  transition:opacity .9s cubic-bezier(.22,.7,.28,1),
  transform .9s cubic-bezier(.22,.7,.28,1)}
.rev.vu{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rev{opacity:1;transform:none;transition:none}}
.prof{font-size:10.5px;letter-spacing:.28em;text-transform:uppercase;opacity:.5}
.gnum{font-family:'Recoleta',Georgia,serif;
  font-size:clamp(54px,7vw,92px);line-height:1;opacity:.14;display:block;
  margin-bottom:-14px}
.h2t{font-family:'Recoleta',Georgia,serif;font-weight:400;
  font-size:clamp(26px,2.8vw,38px);line-height:1.15;margin:6px 0 14px;
  text-wrap:balance}
.dedans{max-width:960px;margin:0 auto}
.sol{background:var(--blanc);padding:64px 24px}
.sol p{font-size:17px;line-height:1.8;max-width:62ch;margin:0 0 1em}
.nuitp{background:var(--nuit);color:var(--clair);text-align:center;
  padding:96px 24px}
.nuitp .dedans{max-width:62ch}
.nuitp h2{font-family:'Recoleta',Georgia,serif;font-weight:400;
  font-size:clamp(27px,3vw,42px);line-height:1.15;margin:8px 0 22px;
  color:var(--clair)}
.nuitp p{font-size:17px;line-height:1.85;opacity:.92;margin:0 0 1.2em}
.nuitp .prof{color:rgba(255,247,203,.6);opacity:1}
.nuitp .chute{font-family:'Recoleta',Georgia,serif;
  font-size:clamp(21px,2.2vw,29px);line-height:1.5;margin-top:26px}
.nuitp .chute .mj{background:var(--jaune);color:var(--vert);
  padding:1px 12px 3px;box-decoration-break:clone;
  -webkit-box-decoration-break:clone}
/* les formules qui grandissent */
.fcum{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:14px}
.fc{background:var(--blanc);border:1px solid rgba(22,59,53,.14);padding:24px 26px;
  display:flex;flex-direction:column}
.fc .fq{font-size:10.5px;letter-spacing:.24em;text-transform:uppercase;opacity:.5}
.fc .fn{font-family:'Recoleta',Georgia,serif;font-size:22px;
  line-height:1.2;margin:4px 0 2px;min-height:2.4em}
.fc .fp{font-family:'Recoleta',Georgia,serif;font-size:26px;margin:2px 0 10px}
.fc .fp small{font-family:'Glacial Indifference','Jost',sans-serif;font-size:12px;opacity:.6;
  letter-spacing:.04em}
.fc ul{margin:0;padding:0;list-style:none;font-size:15px}
.fc li{display:flex;gap:11px;align-items:baseline;padding:9px 0;line-height:1.5;
  border-top:1px solid rgba(22,59,53,.1)}
.fc li:first-child{border-top:none}
.fc li .co{flex:none;width:10px;height:10px;border-radius:50%;
  transform:translateY(1px);background:var(--jaune);
  outline:1px solid rgba(22,59,53,.35);
  box-shadow:0 0 7px 2px rgba(255,247,203,.8)}
.fc li.plus{position:relative}
/* la promesse, en haut de page */
.toutc{max-width:640px;margin:-8px auto 66px;padding:0 24px;
  text-align:center}
.promq{font-size:clamp(21px,2.2vw,28px);line-height:1.35;margin:0 0 14px}
.promp{font-size:16.5px;line-height:1.8;margin:0;text-align:left}
.tcn{text-align:center;font-size:15px;opacity:.75;margin:16px 0 0}
.diag{display:inline-block;text-align:left;margin:0 0 1em;padding:0;
  list-style:none;font-size:15.5px}
.diag li{padding:6px 0 6px 24px;position:relative;line-height:1.6}
.diag li:before{content:"";position:absolute;left:2px;top:13px;width:9px;
  height:9px;border-radius:50%;background:var(--jaune);
  outline:1px solid rgba(22,59,53,.3);
  box-shadow:0 0 7px 2px rgba(255,247,203,.8)}
/* le mini-labo de brise (étape 1) */
.t-ciel{position:relative;overflow:hidden}
.blab{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:20px 0 0}
.blab>span{font-size:10px;letter-spacing:.22em;text-transform:uppercase;
  opacity:.45}
.blab button{font-family:'Glacial Indifference','Jost',sans-serif;font-size:10.5px;
  letter-spacing:.12em;text-transform:uppercase;background:none;
  border:1px solid rgba(22,59,53,.25);color:var(--vert);padding:5px 11px;
  cursor:pointer}
.blab button.on{background:var(--jaune);border-color:rgba(22,59,53,.35)}
.mot{white-space:nowrap;display:inline-block}
.let{display:inline-block;font-weight:inherit;
  transition:transform .5s cubic-bezier(.34,.7,.36,1)}
.let.vol{transform:translateY(-3px) rotate(1.4deg)}
.souffle{position:absolute;inset:0;overflow:hidden;pointer-events:none;
  display:none}
.mode-b3 .souffle,.mode-b13 .souffle{display:block}
.souffle i{position:absolute;top:0;bottom:0;width:62%;left:-70%;
  background:linear-gradient(100deg,transparent 18%,
  rgba(255,255,255,.85) 50%,transparent 82%);
  animation:balaie 7.5s ease-in-out infinite}
@keyframes balaie{0%{transform:translateX(0)}
  60%{transform:translateX(300%)}100%{transform:translateX(300%)}}
.mode-b3 #tet1,.mode-b13 #tet1{animation:sway 7s ease-in-out infinite
  alternate}
@keyframes sway{from{transform:rotate(0deg) translateX(0)}
  to{transform:rotate(.2deg) translateX(2px)}}
.chasse-air{position:absolute;inset:0;pointer-events:none;z-index:1;
  overflow:hidden}
.t-ciel .dedans{position:relative;z-index:2}
.libv{position:absolute;left:0;top:0;width:46px;height:auto;
  color:var(--vert);opacity:.38;will-change:transform}
.mstq{position:absolute;left:0;top:0;width:4px;height:4px;
  border-radius:50%;background:var(--vert);opacity:.32;will-change:transform}
@media (prefers-reduced-motion:reduce){
  .let,.mode-b3 #tet1,.mode-b13 #tet1{transition:none;animation:none}
  .souffle i{animation:none;display:none}
  .chasse-air{display:none}}
/* 16/09 (audit) : sur telephone la libellule passait sur « proche de la peau » */
/* 10/10/2026 (Morgane) : la libellule revient sur telephone, plus petite, dans une bande sous le texte */
@media (max-width:900px){.t-ciel{padding-bottom:64px}.libv{width:32px}.mstq{width:3px;height:3px}}
/* le fil d'Ariane du cycle */
.fila{display:flex;align-items:center;gap:10px;margin:4px 0 18px;
  flex-wrap:wrap;max-width:600px}
.fila .fno{display:flex;align-items:center;gap:7px}
.fila .fdot{width:9px;height:9px;border-radius:50%;flex:none;
  outline:1px solid rgba(22,59,53,.35)}
.fila .fno span{font-size:9.5px;letter-spacing:.22em;text-transform:uppercase;
  opacity:.45;white-space:nowrap}
.fila .fno.actif .fdot{background:var(--jaune);
  box-shadow:0 0 7px 2px rgba(255,247,203,.85)}
.fila .fno.actif span{opacity:.95}
.fila .ftrait{flex:1;min-width:14px;max-width:54px;height:1px;
  background:rgba(22,59,53,.22)}
.fcarte{border:1px dashed rgba(22,59,53,.4);background:var(--blanc);
  padding:22px 26px;margin-top:18px}
.fcarte .fq{font-size:10.5px;letter-spacing:.24em;text-transform:uppercase;
  opacity:.5}
.fcarte .fn{font-family:'Recoleta',Georgia,serif;font-size:22px;
  margin:4px 0 8px}
.fcarte p{font-size:15px;line-height:1.7;max-width:70ch;margin:0}
.integ{max-width:960px;margin:64px auto 8px;padding:0 24px}
.integ-t{font-family:'Recoleta',Georgia,serif;
  font-size:clamp(22px,2.2vw,29px);margin:0 0 8px;font-weight:400}
.integ-p{font-size:16.5px;line-height:1.8;max-width:60ch;margin:0 0 18px}
.integ-g{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.integ-g img{width:100%;height:320px;object-fit:cover;display:block}
.vfin p{margin-left:auto;margin-right:auto}
.integ.mode-p2 .integ-g{grid-template-columns:1fr}
.integ.mode-p2 .integ-g figure:nth-child(2){display:none}
.integ.mode-p2 .integ-g img{height:420px}
.integ.mode-p3 .integ-g{gap:36px;padding:12px 6px}
.integ.mode-p3 figure{background:#fff;padding:12px 12px 4px;
  box-shadow:0 12px 28px -14px rgba(13,36,32,.4)}
.integ.mode-p3 figure:first-child{transform:rotate(-1.8deg)}
.integ.mode-p3 figure:last-child{transform:rotate(1.4deg)}
.integ figcaption{display:none;font-family:'Recoleta',Georgia,serif;
  font-style:italic;font-size:15px;margin:10px 0;opacity:.75;
  text-align:center}
.integ.mode-p3 figcaption{display:block}
@media (max-width:860px){.integ-g{grid-template-columns:1fr}
  .integ-g img{height:230px}
  .integ.mode-p2 .integ-g img{height:260px}}
.lanc-i{font-style:italic;font-size:14.5px;opacity:.75;margin:10px 0 0;
  line-height:1.7;max-width:680px}
.lanc-x{background:var(--jaune);padding:20px 26px;margin-top:22px;font-size:16px;
  line-height:1.7;max-width:680px}
.lanc-x b{font-weight:500}
.conds-x{font-size:15px;opacity:.7;margin:16px 0 0;line-height:1.75;max-width:680px}
/* ================= la houle : deux vagues distinctes ================= */
.houle{position:relative;height:90px;overflow:hidden}
.hcal{position:absolute;left:0;top:0;bottom:0;width:200%;display:flex}
.houle svg{width:50%;height:100%;flex:none;display:block}
.houle .h1x{animation:derive 64s linear infinite reverse}
.houle .h2b{animation:derive 40s linear infinite}
.zoneau.mode-e2 .houle .h1x{animation-duration:30s}
.zoneau.mode-e2 .houle .h2b{animation-duration:19s}
@keyframes derive{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){
  .houle .h1x,.houle .h2b{animation:none}}
/* caustiques doublées, rais de lumière, bulles */
.caustique{position:relative;overflow:hidden}
.caustique:before{content:"";position:absolute;inset:-40px;pointer-events:none;
  background:radial-gradient(70px 30px at 20% 30%,rgba(251,252,251,.55),transparent 70%),
  radial-gradient(90px 36px at 65% 60%,rgba(251,252,251,.45),transparent 70%),
  radial-gradient(56px 24px at 85% 20%,rgba(251,252,251,.5),transparent 70%),
  radial-gradient(80px 34px at 40% 82%,rgba(251,252,251,.45),transparent 70%),
  radial-gradient(64px 26px at 8% 66%,rgba(251,252,251,.4),transparent 70%);
  opacity:.06;animation:caus 13s ease-in-out infinite alternate}
.caustique:after{content:"";position:absolute;inset:-40px;pointer-events:none;
  background:radial-gradient(52px 22px at 32% 18%,rgba(251,252,251,.5),transparent 70%),
  radial-gradient(76px 30px at 78% 44%,rgba(251,252,251,.4),transparent 70%),
  radial-gradient(60px 26px at 14% 88%,rgba(251,252,251,.45),transparent 70%),
  radial-gradient(90px 38px at 55% 30%,rgba(251,252,251,.35),transparent 70%);
  opacity:.04;animation:caus2 17s ease-in-out infinite alternate}
@keyframes caus{to{transform:translate(52px,22px) scale(1.14)}}
@keyframes caus2{to{transform:translate(-44px,30px) scale(1.1)}}
#cauv{position:absolute;inset:0;width:100%;height:100%;display:none;
  background:inherit;
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 110px);
  mask-image:linear-gradient(180deg,transparent,#000 110px)}
.t-eau.gl #cauv{display:block}
/* telephone : jamais de WebGL, le degrade CSS de la section suffit */
/* 10/10/2026 (Morgane) : les caustiques WebGL aussi sur telephone (le canvas est rendu a 520 px de large au plus) */
.t-eau.gl:before,.t-eau.gl:after{display:none}
.zoneau{position:relative;overflow:hidden}
.bullesz{position:absolute;inset:0;pointer-events:none;z-index:1;
  overflow:hidden}
.bulle{position:absolute;bottom:-24px;border-radius:50%;
  background:radial-gradient(circle at 34% 30%,rgba(251,252,251,1),rgba(251,252,251,.4));
  box-shadow:0 0 4px rgba(251,252,251,.5);
  opacity:0;animation:monter linear infinite;pointer-events:none}
@keyframes monter{0%{transform:translateY(0);opacity:0}
  6%{opacity:.6}84%{opacity:.5}100%{transform:translateY(-172vh);opacity:0}}
/* la goutte qui tombe : des ronds dans l'eau, sur la surface */
.ronds{position:absolute;inset:0;pointer-events:none;z-index:1;
  overflow:hidden}
.rond{position:absolute;border:2px solid rgba(255,255,255,.95);
  box-shadow:0 0 0 1px rgba(22,59,53,.12),
  inset 0 0 10px rgba(255,255,255,.35);
  border-radius:50%;pointer-events:none;opacity:0;
  animation:goutte 3.2s ease-out forwards}
@keyframes goutte{0%{opacity:.9;transform:scale(.05)}
  100%{opacity:0;transform:scale(1)}}
/* la matiere en suspension, au fond */
.part{position:absolute;border-radius:50%;
  background:rgba(251,252,251,.7);opacity:.15;
  animation:derivep ease-in-out infinite alternate;pointer-events:none}
@keyframes derivep{from{transform:translate(0,0)}
  to{transform:translate(30px,-16px)}}
@media (prefers-reduced-motion:reduce){
  .rond,.part{display:none}}
.bulle.pb{display:none}
.zoneau.mode-e2 .bulle.pb{display:block}
.zoneau.mode-e0 .bulle{display:none}
.zoneau.mode-e0 #cauv{display:none}
.zoneau.mode-e0 .caustique:before,.zoneau.mode-e0 .caustique:after{display:none}
@media (prefers-reduced-motion:reduce){
  .caustique:before,.caustique:after{animation:none}
  .bulle{display:none}}
/* ================= la traversée ================= */
.tra{padding:64px 24px}
.t-ciel{background:linear-gradient(180deg,var(--blanc) 0%,#eef5fa 100%)}
.t-bord{background:linear-gradient(180deg,#dcebf4 0%,#cfe3f0 100%)}
.t-eau{background:linear-gradient(180deg,#c3ddec 0%,#aacde2 100%)}
.tra h2{font-family:'Recoleta',Georgia,serif;font-weight:400;
  font-size:clamp(26px,2.8vw,38px);line-height:1.15;margin:6px 0 14px;
  text-wrap:balance}
.tra h2.et-t{font-size:clamp(23px,2.4vw,31px)}
.tra p{font-size:17px;line-height:1.8;max-width:60ch;margin:0 0 1em}
.cyx1{max-width:560px;margin:26px auto 0}
.cyx1 img{width:100%;height:auto;display:block}
.wrapT1{position:relative}
.railS{position:sticky;top:44vh;height:0;z-index:5;margin-left:14px;
  width:0;float:left}
.railS div{display:flex;flex-direction:column;gap:16px;width:20px}
.railS span{font-size:9.5px;letter-spacing:.24em;text-transform:uppercase;
  opacity:.28;writing-mode:vertical-rl;transform:rotate(180deg);
  transition:opacity .4s;color:var(--vert);white-space:nowrap}
.railS span.la{opacity:.85}
@media (max-width:1180px){.railS{display:none}}
.t-bord .reflet{position:absolute;left:0;right:0;bottom:0;height:46%;
  pointer-events:none;opacity:.5}
@media (max-width:860px){
  .fcum{grid-template-columns:1fr}
  .fc .fn{min-height:0}
  .sol{padding:48px 20px}
  .tra{padding:48px 20px}}
/* ========== REBRAND BORD DE MER (aligne sur l'accueil) ========== */
:root{--casse:#fbfaf6;--jaunepale:#fdf7d9}