/* EXCITY — système graphique
 * Papier, graphite, béton. Un seul accent : l'oxyde de l'acier Corten.
 * Typo : Archivo (axe de chasse 62→125) pour l'architecture du texte,
 * IBM Plex Mono pour les cotes et les étiquettes techniques.
 */
:root {
  /* couleurs de la marque ExCity — relevées sur le logo */
  --rose: #ee7bea;
  --rose-d: #b13dae;      /* rose lisible en petit texte sur fond clair */
  --orange: #f7820f;
  --orange-d: #b85500;    /* orange lisible en petit texte sur fond clair */
  --grad: linear-gradient(90deg, #ee7bea 0%, #f39a7c 48%, #f7820f 100%);

  --paper: #fbf8f5;
  --paper-2: #f5eef3;
  --concrete: #b9adb7;
  --concrete-d: #6f6370;
  --graphite: #3a2c3d;
  --ink: #1e1622;
  --plum: #241827;
  --accent: var(--orange);
  --accent-soft: rgba(238, 123, 234, 0.16);

  --gut: clamp(16px, 4vw, 64px);
  --col: calc((100vw - 2 * var(--gut)) / 12);

  --f-sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --fs-mega: clamp(3.1rem, 11.2vw, 13.5rem);
  --fs-xl: clamp(2.5rem, 7.2vw, 8rem);
  --fs-l: clamp(1.75rem, 3.6vw, 3.7rem);
  --fs-m: clamp(1.25rem, 1.9vw, 1.9rem);
  --fs-body: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  --fs-label: 0.6875rem;

  /* le mouvement : lourd, précis, sans rebond */
  --ease: cubic-bezier(0.22, 0.61, 0.18, 1);
  --ease-heavy: cubic-bezier(0.7, 0, 0.18, 1);
  --t-slow: 1.2s;
  --t-med: 0.7s;
}

*,
*::before,
*::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-sans);
  font-size: var(--fs-body);
  line-height: 1.55;
  font-stretch: 100%;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
::selection { background: var(--rose); color: var(--ink); }
:focus-visible { outline: 1px solid var(--accent); outline-offset: 4px; }

.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: fixed; top: 8px; left: 8px; z-index: 200; padding: 8px 14px; background: var(--ink); color: var(--paper); transform: translateY(-200%); }
.skip:focus { transform: none; }

/* ─── Typographie ─── */
.label,
.t-label {
  font-family: var(--f-mono);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  line-height: 1.4;
}
.display {
  font-stretch: 68%;
  font-weight: 560;
  text-transform: uppercase;
  line-height: 0.84;
  letter-spacing: -0.012em;
  margin: 0;
}
.mega { font-size: var(--fs-mega); }
.xl { font-size: var(--fs-xl); }
.l { font-size: var(--fs-l); }
.wide { font-stretch: 125%; font-weight: 400; letter-spacing: 0.02em; }
.lede {
  font-size: var(--fs-m);
  line-height: 1.32;
  font-weight: 380;
  letter-spacing: -0.005em;
  max-width: 30ch;
}
.prose { max-width: 58ch; }
.prose p { margin: 0 0 1em; }
.muted { color: var(--concrete-d); }
.acc { color: var(--orange-d); }
.dark .acc { color: var(--orange); }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.mono-num { font-family: var(--f-mono); font-feature-settings: "tnum"; }

/* lignes qui montent : le texte se lève derrière un masque */
.rise { display: block; overflow: hidden; padding-bottom: 0.04em; margin-bottom: -0.04em; }
.rise > span { display: block; transform: translateY(105%); transition: transform var(--t-slow) var(--ease); }
.is-in .rise > span,
.rise.is-in > span { transform: none; }
.rise:nth-child(2) > span { transition-delay: 0.08s; }
.rise:nth-child(3) > span { transition-delay: 0.16s; }
.rise:nth-child(4) > span { transition-delay: 0.24s; }
.fade { opacity: 0; transform: translateY(18px); transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease); }
.is-in .fade, .fade.is-in { opacity: 1; transform: none; }

/* ─── Structure ─── */
.wrap { padding-left: var(--gut); padding-right: var(--gut); }
.grid12 { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: clamp(12px, 1.6vw, 28px); }
.dark { background: var(--plum); color: var(--paper); }
.dark .muted { color: var(--concrete); }
.rule { height: 1px; background: currentColor; opacity: 0.16; border: 0; margin: 0; }
section { position: relative; }

/* ─── En-tête ─── */
.hdr {
  position: fixed; inset: 0 0 auto 0; z-index: 90;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px;
  padding: 16px var(--gut);
  color: var(--ink);
  background: rgba(251, 248, 245, 0.92);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(30, 22, 34, 0.08);
  transition: background .5s var(--ease), color .5s var(--ease), border-color .5s;
  pointer-events: none;
}
/* au-dessus d'un hero sombre : transparent, texte clair, jusqu'au défilement */
.hdr-over .hdr:not(.solid) { background: transparent; color: var(--paper); border-color: transparent; -webkit-backdrop-filter: none; backdrop-filter: none; }
.menu-open .hdr { background: transparent; color: var(--paper); border-color: transparent; }
.hdr .mark { color: inherit; }
.hdr > * { pointer-events: auto; }
.mark { display: inline-flex; }
.mark svg { height: clamp(26px, 2.6vw, 34px); width: auto; display: block; }
.hdr__nav { display: flex; gap: clamp(16px, 2vw, 32px); }
.hdr__nav a[aria-current]::after { transform: scaleX(1); }
.hdr__right { display: flex; justify-content: flex-end; gap: 28px; align-items: center; }
/* l'action principale du site : un vrai bouton, aux couleurs du logo */
.hdr__cta {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 11px 18px; border-radius: 999px;
  background: var(--grad); color: var(--ink) !important; font-weight: 600;
  box-shadow: 0 6px 22px rgba(238, 123, 234, 0.35);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), filter .4s;
}
.hdr__cta::after { display: none; }
.hdr__cta span { transition: transform .4s var(--ease); }
.hdr__cta:hover { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(247, 130, 15, 0.45); filter: saturate(1.15); }
.hdr__cta:hover span { transform: translateX(3px); }
.lnk { position: relative; }
.lnk::after { content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform 0.5s var(--ease); }
.lnk:hover::after { transform: scaleX(1); transform-origin: left; }
.burger { display: inline-flex; gap: 10px; align-items: center; }
.burger b { display: grid; gap: 5px; }
.burger b::before, .burger b::after { content: ""; width: 22px; height: 1px; background: currentColor; display: block; transition: transform 0.5s var(--ease); }
.menu-open .burger b::before { transform: translateY(3px) rotate(45deg); }
.menu-open .burger b::after { transform: translateY(-3px) rotate(-45deg); }

/* menu plein écran */
.menu {
  position: fixed; inset: 0; z-index: 80;
  background: var(--plum); color: var(--paper);
  display: grid; grid-template-rows: 1fr auto;
  padding: 90px var(--gut) 28px;
  clip-path: inset(0 0 100% 0);
  transition: clip-path 0.9s var(--ease-heavy);
  visibility: hidden;
}
.menu-open .menu { clip-path: inset(0 0 0 0); visibility: visible; }
.menu ol { list-style: none; margin: 0; padding: 0; align-self: center; }
.menu li { display: grid; grid-template-columns: 4ch 1fr; align-items: baseline; border-top: 1px solid rgba(238, 235, 228, 0.12); }
.menu li a { font-size: clamp(2.4rem, 7.4vw, 6.6rem); padding: 0.06em 0; transition: color 0.4s, font-stretch 0.6s var(--ease); }
.menu li a:hover { color: var(--rose); font-stretch: 80%; }
.menu__foot { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }

/* compteur de chapitre */
.chap {
  position: fixed; right: var(--gut); bottom: 22px; z-index: 70;
  color: var(--paper); mix-blend-mode: difference;
  display: flex; gap: 10px; align-items: center;
}
.chap__bar { width: 54px; height: 1px; background: currentColor; opacity: 0.35; position: relative; overflow: hidden; }
.chap__bar i { position: absolute; inset: 0; background: currentColor; transform-origin: left; transform: scaleX(var(--p, 0)); }

/* ─── Curseur ─── */
.cur {
  position: fixed; left: 0; top: 0; z-index: 150; pointer-events: none;
  width: 8px; height: 8px; margin: -4px 0 0 -4px; border-radius: 50%;
  background: var(--paper); mix-blend-mode: difference;
  transition: width 0.45s var(--ease), height 0.45s var(--ease), margin 0.45s var(--ease), opacity 0.3s;
  display: grid; place-items: center;
}
.cur span { font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.1em; color: var(--ink); opacity: 0; transition: opacity 0.3s; white-space: nowrap; }
.cur.has-label { width: 86px; height: 86px; margin: -43px 0 0 -43px; mix-blend-mode: normal; background: var(--grad); }
.cur.has-label span { opacity: 1; }
.cur.is-hidden { opacity: 0; }
@media (hover: none), (pointer: coarse) { .cur { display: none; } }

/* ─── 01 · HERO ─── */
.hero { height: 100svh; min-height: 560px; overflow: hidden; color: var(--paper); background: var(--ink); }
.hero__img { position: absolute; inset: -6% 0 -6% 0; will-change: transform; }
.hero__img img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 60%; }
.hero__veil { position: absolute; inset: 0; background: radial-gradient(150% 110% at 0% 85%, rgba(24,14,28,0.86) 0%, rgba(24,14,28,0.66) 34%, rgba(24,14,28,0.28) 58%, rgba(24,14,28,0) 80%), linear-gradient(180deg, rgba(30,22,34,0.5) 0%, rgba(30,22,34,0) 26%); }
.hero__grid { position: absolute; inset: 0; opacity: 0; pointer-events: none;
  background-image: linear-gradient(rgba(238,235,228,.13) 1px, transparent 1px), linear-gradient(90deg, rgba(238,235,228,.13) 1px, transparent 1px);
  background-size: calc(100vw / 12) calc(100vw / 12); background-position: var(--gut) 0; }
.hero__top { position: absolute; top: 92px; left: var(--gut); right: var(--gut); display: flex; justify-content: space-between; gap: 16px; }
.hero__title { position: absolute; left: var(--gut); right: var(--gut); bottom: clamp(84px, 13vh, 150px); will-change: transform; }
.hero__title .display { font-size: clamp(2.9rem, 9.4vw, 11.6rem); }
.hero__title .display {
  /* lisibilité sans fond : halo diffus qui suit la forme des lettres (marche aussi sur le texte en dégradé) */
  filter: drop-shadow(0 2px 3px rgba(20, 12, 24, 0.5)) drop-shadow(0 8px 36px rgba(20, 12, 24, 0.75));
}
.hero__title .display .acc-line { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__foot { position: absolute; left: var(--gut); right: var(--gut); bottom: 24px; display: flex; justify-content: space-between; align-items: end; }
.scroll-cue { display: inline-flex; gap: 12px; align-items: center; }
.scroll-cue i { width: 1px; height: 34px; background: currentColor; position: relative; overflow: hidden; opacity: .6; }
.scroll-cue i::after { content: ""; position: absolute; left: 0; right: 0; top: -40%; height: 40%; background: var(--paper); animation: cue 2.6s var(--ease) infinite; }
@keyframes cue { to { top: 110%; } }

/* ─── Manifeste (compression) ─── */
.manifest { padding-block: clamp(96px, 16vh, 200px) clamp(60px, 10vh, 120px); }
.manifest .display { grid-column: 1 / span 11; font-size: var(--fs-xl); }
.manifest .display em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.manifest__meta { grid-column: 1 / span 3; margin-top: 56px; }
.manifest__txt { grid-column: 7 / span 5; margin-top: 56px; }

/* ─── 01 · MATIÈRE (glisser pour révéler) ─── */
.matiere { height: clamp(520px, 86vh, 980px); overflow: hidden; background: var(--plum); color: var(--paper); touch-action: pan-y; user-select: none; }
.matiere__layer { position: absolute; inset: 0; }
.matiere__layer img { width: 100%; height: 100%; object-fit: cover; }
.matiere__top { clip-path: inset(0 0 0 var(--x, 50%)); }
.matiere__top img { object-position: 50% 50%; }
.matiere__line { position: absolute; top: 0; bottom: 0; left: var(--x, 50%); width: 1px; background: var(--paper); opacity: 0.8; }
.matiere__line::before { content: ""; position: absolute; top: 50%; left: -5px; width: 11px; height: 11px; border: 1px solid var(--paper); transform: translateY(-50%) rotate(45deg); background: var(--ink); }
.matiere__tag { position: absolute; top: 28px; }
.matiere__tag--l { left: var(--gut); }
.matiere__tag--r { right: var(--gut); text-align: right; }
.matiere__cap { position: absolute; left: var(--gut); right: var(--gut); bottom: 28px; display: flex; justify-content: space-between; gap: 16px; align-items: end; pointer-events: none; }
.matiere__cap .display { font-size: var(--fs-l); }
.matiere__pct { font-family: var(--f-mono); font-size: 0.8rem; }

/* ─── 02 · TRANSFORMATION (séquence épinglée) ─── */
.transfo { height: 640vh; background: var(--paper); }
.transfo__pin { position: sticky; top: 0; height: 100svh; overflow: hidden; display: grid; grid-template-columns: minmax(260px, 30%) 1fr; }
.transfo__side { padding: 110px 0 40px var(--gut); display: flex; flex-direction: column; justify-content: space-between; position: relative; z-index: 2; }
.transfo__steps { list-style: none; margin: 0; padding: 0; position: relative; }
.transfo__steps li { display: grid; grid-template-columns: 3.4ch 1fr; padding: 7px 0; color: var(--concrete); transition: color 0.6s var(--ease); }
.transfo__steps li.on { color: var(--ink); }
.transfo__steps li.on .label:first-child { color: var(--orange-d); }
.transfo__now { min-height: 12.5em; }
.transfo__now .display { font-size: clamp(3rem, 7.6vw, 8.8rem); }
.transfo__now p { max-width: 34ch; margin: 14px 0 0; }
.transfo__now .swap { transition: opacity 0.45s var(--ease), transform 0.6s var(--ease); }
.transfo__now.out .swap { opacity: 0; transform: translateY(10px); }
.transfo__stage { position: relative; }
.transfo__photo { position: absolute; inset: 0; opacity: 0; transition: opacity 1.4s var(--ease); }
.transfo__photo img { width: 100%; height: 100%; object-fit: cover; }
.transfo__photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--paper) 0%, rgba(238,235,228,0) 26%); }
.transfo[data-step="6"] .transfo__photo { opacity: 1; }
.transfo__svg { position: absolute; inset: 70px var(--gut) 60px 0; }
.transfo__svg svg { width: 100%; height: 100%; overflow: visible; }
.transfo__coupe { position: absolute; right: var(--gut); top: 96px; width: min(330px, 30vw); opacity: 0; transform: translateY(14px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.transfo[data-step="4"] .transfo__coupe { opacity: 1; transform: none; }
.transfo__dims { position: absolute; left: 0; bottom: 34px; }
.transfo__prog { position: absolute; left: var(--gut); right: var(--gut); top: 72px; height: 1px; background: rgba(18,18,17,.12); display: none; }

/* dessin : classes partagées par tous les SVG techniques */
.solid { stroke: none; }
.f-top { fill: #ffffff; }
.f-front { fill: #eee5ec; }
.f-side { fill: #d9cbd6; }
.solid.alt.f-top { fill: #fdeee4; } .solid.alt.f-front { fill: #f8d9c2; } .solid.alt.f-side { fill: #efc09c; }
.solid.faint { fill-opacity: 0.32; }
.solid.steelfill.f-top { fill: #8a7d88; } .solid.steelfill.f-front { fill: #5a4c5b; } .solid.steelfill.f-side { fill: #463a47; }
.solid.skin.f-top { fill: #fbe3d0; } .solid.skin.f-front { fill: #f6c79f; } .solid.skin.f-side { fill: #ee9f62; }
.ln { fill: none; stroke: var(--ink); stroke-width: 1; vector-effect: non-scaling-stroke; }
.ln.strong { stroke-width: 1.4; }
.ln.thin { stroke-width: 0.6; opacity: 0.6; }
.ln.ghost { stroke: var(--concrete); stroke-width: 0.7; }
.ln.hid, .hid { stroke-dasharray: 3 4; }
.ln.win { stroke-dasharray: 2 3; opacity: .6; }
.corr { stroke: var(--ink); stroke-width: 0.45; opacity: 0.32; vector-effect: non-scaling-stroke; }
.void { fill: var(--graphite); stroke: var(--ink); stroke-width: 0.8; vector-effect: non-scaling-stroke; }
.cut { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-dasharray: 0.02 0.012; vector-effect: non-scaling-stroke; }
.steel { fill: none; stroke: var(--accent); stroke-width: 3.2; stroke-linecap: square; vector-effect: non-scaling-stroke; }
.insul { fill: none; stroke: var(--rose-d); stroke-width: 1; vector-effect: non-scaling-stroke; }
.hatch { stroke: var(--rose-d); stroke-width: 0.8; opacity: .8; vector-effect: non-scaling-stroke; }
.node { fill: var(--paper); stroke: var(--ink); stroke-width: 1; vector-effect: non-scaling-stroke; }
.node.acc { fill: var(--accent); stroke: none; }
.leader { fill: none; stroke: var(--ink); stroke-width: 0.7; vector-effect: non-scaling-stroke; }
.pipe { fill: none; stroke: var(--rose-d); stroke-width: 2.2; vector-effect: non-scaling-stroke; }
.duct { fill: none; stroke: var(--accent); stroke-width: 5; opacity: 0.55; vector-effect: non-scaling-stroke; }
.elec { fill: none; stroke: var(--ink); stroke-width: 1.2; stroke-dasharray: 5 4; vector-effect: non-scaling-stroke; }
.insulfill { fill: url(#hatch) var(--accent-soft); stroke: var(--rose-d); stroke-width: 1; vector-effect: non-scaling-stroke; }
.beam { fill: none; stroke: var(--ink); stroke-width: 2.4; vector-effect: non-scaling-stroke; }
.beam.hid { stroke-width: 1; opacity: .45; }
.heat { fill: var(--accent); fill-opacity: var(--h); stroke: none; }
.focus { fill: none; stroke: var(--rose-d); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.t-mono { font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.06em; fill: var(--ink); text-transform: uppercase; }
.t-mono.dim { fill: var(--concrete-d); }
.t-mono.acc { fill: var(--orange-d); }
.t-mono.tag { font-size: 11px; font-weight: 500; }
.c-steel { fill: var(--graphite); } .c-air { fill: #fff; stroke: var(--ink); stroke-width: .6; }
.c-insul { fill: url(#hatch) var(--accent-soft); stroke: var(--rose-d); stroke-width: .8; }
.c-vap { fill: var(--rose-d); } .c-int { fill: #d9d5cc; stroke: var(--ink); stroke-width: .6; }

/* étapes : chaque groupe s'allume avec son étape */
.st { opacity: 0; transition: opacity 0.9s var(--ease), transform 1.2s var(--ease-heavy); }
.st [pathLength] { stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 1.6s var(--ease); }
.transfo[data-step="1"] .st-1,
.transfo[data-step="2"] :is(.st-1, .st-2), .transfo[data-step="3"] :is(.st-1, .st-2b, .st-3),
.transfo[data-step="4"] :is(.st-1, .st-2b, .st-3, .st-4), .transfo[data-step="5"] :is(.st-1, .st-2b, .st-3, .st-5),
.transfo[data-step="6"] :is(.st-1, .st-2b, .st-3, .st-5) { opacity: 1; }
.transfo[data-step="2"] .st-2 [pathLength], .transfo[data-step="3"] .st-3 [pathLength], .transfo[data-step="4"] :is(.st-3, .st-4) [pathLength],
.transfo[data-step="5"] .st-3 [pathLength], .transfo[data-step="6"] .st-3 [pathLength] { stroke-dashoffset: 0; }
.transfo[data-step="2"] .st-2 .cut { stroke-dasharray: 0.02 0.012; stroke-dashoffset: 0; animation: march 6s linear infinite; }
@keyframes march { to { stroke-dashoffset: -1; } }
.transfo .st-2b { transition-delay: 0.3s; }
.transfo .arrive-top { transform: translateY(-120px); }
.transfo .arrive-back { transform: translate(60px, -30px); }
.transfo:is([data-step="5"], [data-step="6"]) :is(.arrive-top, .arrive-back) { transform: none; }
.transfo .coins { transition-delay: 0.9s; }
.transfo[data-step="6"] .transfo__svg { opacity: 0.0; transition: opacity 1.4s var(--ease) .2s; }
.transfo__svg { transition: opacity 0.8s var(--ease); }

/* ─── 03 · ARCHIVE ─── */
.archive { padding-block: clamp(110px, 16vh, 190px) clamp(80px, 12vh, 150px); }
.archive__head { align-items: end; margin-bottom: clamp(40px, 7vh, 90px); }
.archive__head .display { grid-column: 1 / span 8; font-size: var(--fs-xl); }
.archive__head .label { grid-column: 10 / span 3; text-align: right; }
.archive__cols { display: grid; grid-template-columns: 6ch 1fr 16ch 18ch 9ch; gap: 16px; padding: 0 0 10px; color: var(--concrete-d); }
.idx { list-style: none; margin: 0; padding: 0; position: relative; z-index: 2; }
.idx li { border-top: 1px solid rgba(18,18,17,0.14); }
.idx li:last-child { border-bottom: 1px solid rgba(18,18,17,0.14); }
.idx a { display: grid; grid-template-columns: 6ch 1fr 16ch 18ch 9ch; gap: 16px; align-items: center; padding: clamp(10px, 1.4vw, 18px) 0; transition: opacity 0.5s var(--ease), color 0.4s; }
.idx .nm { font-stretch: 70%; font-weight: 540; text-transform: uppercase; font-size: clamp(1.9rem, 4.6vw, 5.2rem); line-height: 0.9; letter-spacing: -0.01em; transition: transform 0.7s var(--ease), font-stretch 0.7s var(--ease); }
.idx .st-pill { justify-self: end; }
.idx:hover a { opacity: 0.22; }
.idx:hover a:hover { opacity: 1; }
.idx a:hover .nm { transform: translateX(clamp(8px, 1.6vw, 26px)); font-stretch: 78%; }
.archive__float {
  position: fixed; left: 0; top: 0; z-index: 1; pointer-events: none;
  width: clamp(300px, 34vw, 560px); aspect-ratio: 2 / 1; margin: calc(clamp(300px, 34vw, 560px) / -4) 0 0 calc(clamp(300px, 34vw, 560px) / -2);
  opacity: 0; transform: scale(0.96); transition: opacity 0.45s var(--ease), transform 0.7s var(--ease);
  overflow: hidden;
}
.archive__float.on { opacity: 1; transform: scale(1); }
.archive__float img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 0.5s var(--ease); }
.archive__float img.on { opacity: 1; }
.archive__meta { position: absolute; right: 0; bottom: -2px; transform: translateY(100%); padding-top: 8px; display: flex; gap: 16px; }
.archive__foot { margin-top: 28px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* ─── 04 · ANATOMIE ─── */
.anat { background: var(--paper-2); padding-block: clamp(100px, 14vh, 170px) clamp(80px, 10vh, 120px); }
.anat__head .display { grid-column: 1 / span 7; font-size: var(--fs-l); font-size: clamp(2.4rem, 5.6vw, 6.4rem); }
.anat__head p { grid-column: 9 / span 4; align-self: end; margin: 0; }
.anat__body { margin-top: clamp(30px, 6vh, 70px); align-items: center; }
.anat__fig { grid-column: 1 / span 8; position: relative; }
.anat__fig svg { width: 100%; height: auto; max-height: 76vh; overflow: visible; }
.anat__ctl { grid-column: 9 / span 4; }
.anat__list { list-style: none; margin: 0 0 28px; padding: 0; }
.anat__list button { width: 100%; display: grid; grid-template-columns: 3.5ch 1fr auto; align-items: baseline; text-align: left; padding: 12px 0; border-top: 1px solid rgba(18,18,17,0.16); transition: color 0.4s; }
.anat__list li:last-child button { border-bottom: 1px solid rgba(18,18,17,0.16); }
.anat__list .nm { font-stretch: 80%; font-weight: 520; text-transform: uppercase; font-size: clamp(1.15rem, 1.6vw, 1.6rem); letter-spacing: 0.01em; }
.anat__list button::after { content: "+"; font-family: var(--f-mono); transition: transform 0.5s var(--ease); }
.anat__list button[aria-pressed="true"] { color: var(--rose-d); }
.anat__list button[aria-pressed="true"]::after { transform: rotate(45deg); }
.anat__note { min-height: 9.5em; }
.anat__note p { margin: 8px 0 12px; max-width: 40ch; }
.layer { transform: translateY(calc(var(--i) * -46px)); transition: transform 1.1s var(--ease-heavy), opacity 0.7s var(--ease); }
.anat__fig.collapsed .layer { transform: translateY(calc(var(--i) * -14px)); }
.anat__fig.sel .layer { opacity: 0.16; }
.anat__fig.sel .layer.on { opacity: 1; transform: translateY(calc(var(--i) * -46px - 34px)); }
.layer text, .layer .leader { opacity: 0.55; transition: opacity .5s; }
.layer.on text, .layer.on .leader { opacity: 1; }
.layer.on text { fill: var(--rose-d); }

/* ─── 05 · INGÉNIERIE (sombre) ─── */
.engi { height: 300vh; background: var(--plum); color: var(--paper); }
.engi__pin { position: sticky; top: 0; height: 100svh; overflow: hidden; display: grid; grid-template-rows: auto 1fr auto; padding: 96px var(--gut) 34px;
  background-image: linear-gradient(rgba(238,235,228,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(238,235,228,.045) 1px, transparent 1px);
  background-size: 24px 24px; }
.engi__head { display: flex; justify-content: space-between; gap: 24px; align-items: end; }
.engi__head .display { font-size: clamp(2.4rem, 6vw, 6.8rem); }
.engi__fig { position: relative; min-height: 0; display: grid; place-items: center; }
.engi__fig svg { width: 100%; height: 100%; max-height: 66vh; overflow: visible; }
.engi__foot { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.engi__foot span { opacity: 0.3; transition: opacity 0.6s var(--ease), color .6s; }
.engi__foot span.on { opacity: 1; }
.engi .axis { stroke: rgba(238,235,228,0.14); stroke-width: 1; stroke-dasharray: 2 5; vector-effect: non-scaling-stroke; }
.engi .axis-c { fill: none; stroke: rgba(238,235,228,0.4); vector-effect: non-scaling-stroke; }
.engi .ground { stroke: var(--paper); stroke-width: 1; opacity: .5; }
.engi .t-mono { fill: var(--paper); }
.engi .t-mono.dim { fill: var(--concrete); }
.engi .t-mono.acc { fill: var(--orange-d); }
.engi .member { fill: none; stroke: var(--paper); stroke-width: 3; stroke-linecap: square; stroke-dasharray: 1; stroke-dashoffset: calc(1 - var(--m, 0)); vector-effect: non-scaling-stroke; }
.engi .member.thin { stroke-width: 1; opacity: 0.6; }
.engi .node { fill: var(--ink); stroke: var(--paper); opacity: var(--n, 0); transition: opacity .4s; }
.engi .dimline { fill: none; stroke: var(--concrete); stroke-width: 0.8; vector-effect: non-scaling-stroke; }
.engi .force { fill: none; stroke: var(--paper); stroke-width: 1; vector-effect: non-scaling-stroke; }
.engi .force.strong { stroke-width: 2; stroke: var(--orange); }
.engi .moment { fill: none; stroke: var(--rose); stroke-width: 1.6; stroke-dasharray: 1; stroke-dashoffset: calc(1 - var(--r, 0)); vector-effect: non-scaling-stroke; }
.engi .e-grid { opacity: var(--g, 0); }
.engi .e-dims { opacity: var(--d, 0); }
.engi .e-loads { opacity: var(--l, 0); }
.engi .e-react { opacity: min(1, calc(var(--r, 0) * 3)); }

/* ─── 06 · BIM ─── */
.bim { background: var(--paper-2); padding-block: clamp(90px, 13vh, 160px) 0; }
.bim__head .display { grid-column: 1 / span 6; font-size: clamp(2.4rem, 5.6vw, 6.4rem); }
.bim__head p { grid-column: 8 / span 5; align-self: end; margin: 0; }
.bim__tool { margin-top: clamp(36px, 6vh, 70px); border-top: 1px solid rgba(18,18,17,.18); display: grid; grid-template-columns: 240px 1fr 280px; min-height: min(78vh, 760px); }
.bim__tabs { border-right: 1px solid rgba(18,18,17,.18); padding: 22px 0; }
.bim__tabs button { display: grid; grid-template-columns: 3ch 1fr auto; gap: 8px; width: 100%; text-align: left; padding: 11px var(--gut) 11px var(--gut); align-items: center; transition: background .4s, color .4s; }
.bim__tabs button i { width: 7px; height: 7px; border: 1px solid currentColor; }
.bim__tabs button[aria-selected="true"] { color: var(--rose-d); }
.bim__tabs button[aria-selected="true"] i { background: currentColor; }
.bim__view { position: relative; overflow: hidden;
  background-image: linear-gradient(rgba(18,18,17,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(18,18,17,.05) 1px, transparent 1px);
  background-size: 32px 32px; }
.bim__view svg { position: absolute; inset: 6% 6% 10% 6%; width: 88%; height: 84%; overflow: visible; }
.bim__view .mode { opacity: 0; transition: opacity 0.9s var(--ease); }
.bim__view .mode.on { opacity: 1; }
.bim__hud { position: absolute; left: 18px; right: 18px; display: flex; justify-content: space-between; color: var(--concrete-d); }
.bim__hud--t { top: 14px; } .bim__hud--b { bottom: 14px; }
.bim__info { border-left: 1px solid rgba(18,18,17,.18); padding: 22px var(--gut) 22px 24px; display: flex; flex-direction: column; justify-content: space-between; gap: 24px; }
.bim__info .display { font-size: 2.2rem; }
.bim__info p { margin: 10px 0 0; }
.bim__leg { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.bim__leg li { display: flex; gap: 10px; align-items: center; }
.bim__leg li i { width: 22px; height: 0; border-top: 2px solid var(--orange); }
.bim__leg li:first-child i { border-image: var(--grad) 1; }
.bim__leg li:nth-child(2) i { border-top: 2px solid var(--ink); }
.bim__leg li:nth-child(3) i { border-top: 1px dashed var(--ink); }

/* ─── 07 · HUMAIN (ralentir) ─── */
.human { padding-block: clamp(140px, 24vh, 300px) clamp(120px, 20vh, 260px); }
.human__img { grid-column: 1 / span 8; aspect-ratio: 2 / 1; overflow: hidden; }
.human__img img { width: 100%; height: 115%; object-fit: cover; will-change: transform; }
.human__txt { grid-column: 9 / span 4; align-self: end; }
.human__txt h2 { font-stretch: 80%; font-weight: 520; text-transform: uppercase; font-size: clamp(1.4rem, 2.2vw, 2.2rem); line-height: 1; margin: 0 0 28px; letter-spacing: .01em; }
.human__cap { grid-column: 1 / span 8; margin-top: 12px; display: flex; justify-content: space-between; }

/* ─── 08 · COUPURE ─── */
.pause { height: 190vh; background: var(--plum); }
.pause__pin { position: sticky; top: 0; height: 100svh; overflow: hidden; color: var(--paper); }
.pause__pin img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transform: scale(var(--z, 1.08)); will-change: transform; }
.pause__mark { position: absolute; left: 50%; bottom: 34px; transform: translateX(-50%); }

/* ─── 09 · CHIFFRES ─── */
.nums { padding-block: clamp(110px, 16vh, 200px) clamp(70px, 10vh, 130px); }
.nums { display: grid; grid-template-columns: repeat(4, 1fr); column-gap: clamp(16px, 2.4vw, 40px); align-items: start; }
.nums__row { display: flex; flex-direction: column; gap: 14px; border-top: 1px solid rgba(30,22,34,0.16); padding-top: 18px; }
.nums__val { font-stretch: 64%; font-weight: 520; font-size: clamp(3.4rem, 7.4vw, 8.6rem); line-height: 0.82; letter-spacing: -0.03em; font-feature-settings: "tnum"; white-space: nowrap; }
.nums__val small { font-size: 0.34em; letter-spacing: 0; margin-left: 0.08em; font-stretch: 100%; font-weight: 400; }
.nums__lbl { max-width: 26ch; }
.nums__note { margin-top: 26px; }

/* ─── 10 · AVEC QUI ─── */
.with { padding-block: clamp(80px, 12vh, 150px); background: var(--paper-2); overflow: hidden; }
.with__row { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 clamp(18px, 2.6vw, 44px); position: relative; z-index: 2; }
.with__row button { font-stretch: 70%; font-weight: 540; text-transform: uppercase; font-size: clamp(2.2rem, 6.4vw, 7.4rem); line-height: 0.95; letter-spacing: -0.01em; color: var(--concrete); transition: color 0.5s var(--ease); display: inline-flex; align-items: flex-start; gap: 6px; }
.with__row button sup { font-family: var(--f-mono); font-size: 0.7rem; font-weight: 500; letter-spacing: .08em; margin-top: .6em; font-stretch: 100%; }
.with__row button.on { color: var(--ink); }
.with__stage { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: clamp(12px, 1.6vw, 28px); margin-top: clamp(30px, 5vh, 60px); align-items: end; }
.with__img { grid-column: 5 / span 8; aspect-ratio: 2 / 1; position: relative; overflow: hidden; background: var(--ink); }
.with__img img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transform: scale(1.04); transition: opacity 0.8s var(--ease), transform 1.6s var(--ease); }
.with__img img.on { opacity: 1; transform: none; }
.with__txt { grid-column: 1 / span 3; grid-row: 1; }
.with__txt p { margin: 10px 0 0; }

/* ─── 11 · ADN ─── */
.dna { height: 460vh; background: var(--paper); }
.dna__pin { position: sticky; top: 0; height: 100svh; overflow: hidden; display: grid; grid-template-columns: 1fr 1fr; }
.dna__type { position: relative; padding: 110px var(--gut) 40px; display: flex; flex-direction: column; justify-content: space-between; }
.dna__words { position: relative; height: 1em; font-size: clamp(3.2rem, 8.6vw, 10.5rem); }
.dna__words .display { position: absolute; left: 0; top: 0; font-size: 1em; opacity: 0; transform: translateY(0.3em); transition: opacity 0.9s var(--ease), transform 1.2s var(--ease-heavy); }
.dna__words .display.on { opacity: 1; transform: none; }
.dna__txt { position: relative; min-height: 8em; }
.dna__txt p { position: absolute; inset: 0 auto auto 0; margin: 0; max-width: 36ch; opacity: 0; transition: opacity .8s var(--ease); }
.dna__txt p.on { opacity: 1; transition-delay: .25s; }
.dna__count { display: flex; gap: 16px; }
.dna__count span { opacity: .3; transition: opacity .5s; }
.dna__count span.on { opacity: 1; color: var(--orange-d); }
.dna__media { position: relative; overflow: hidden; background: var(--ink); }
.dna__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; clip-path: inset(100% 0 0 0); transition: clip-path 1.3s var(--ease-heavy); }
.dna__media img.on { clip-path: inset(0 0 0 0); }
.dna__media img.past { clip-path: inset(0 0 0 0); }
.dna__detail { position: absolute; right: 24px; bottom: 24px; width: min(260px, 60%); background: var(--paper); padding: 16px; opacity: 0; transform: translateY(12px); transition: opacity .7s var(--ease) .5s, transform .9s var(--ease) .5s; }
.dna__detail.on { opacity: 1; transform: none; }
.dna__detail svg { width: 100%; height: auto; margin-bottom: 10px; }

/* ─── CONTACT ─── */
.contact { padding-block: clamp(130px, 20vh, 230px) clamp(60px, 10vh, 120px); }
.contact .display { font-size: var(--fs-mega); }
.contact__q { margin-top: clamp(40px, 7vh, 80px); align-items: end; }
.contact__q .lede { grid-column: 1 / span 6; max-width: none; }
.contact__q .lede span { display: block; color: var(--concrete); }
.contact__q .go { grid-column: 9 / span 4; justify-self: end; }
.btn { display: inline-flex; align-items: center; gap: 22px; padding: 22px 26px; border: 1px solid currentColor; font-family: var(--f-mono); font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; position: relative; overflow: hidden; isolation: isolate; transition: color .5s var(--ease); }
.btn::before { content: ""; position: absolute; inset: 0; background: var(--paper); transform: translateY(101%); transition: transform 0.6s var(--ease); z-index: -1; }
.btn:hover { color: var(--ink); }
.btn:hover::before { transform: none; }
.btn--acc { background: var(--grad); border: 0; color: var(--ink); padding: 23px 27px; }
.btn--acc::before { background: var(--ink); }
.btn--acc:hover { color: var(--paper); }
.btn--ink { color: var(--ink); }
.btn--ink::before { background: var(--ink); }
.btn--ink:hover { color: var(--paper); }

.form { margin-top: clamp(50px, 8vh, 100px); border-top: 1px solid rgba(238,235,228,0.16); display: grid; grid-template-columns: 1fr 2fr; gap: 32px; padding: 34px 0 60px; }
.form[hidden] { display: none; }
.form__rail { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; align-content: start; }
.form__rail li { color: var(--concrete-d); transition: color .4s; display: grid; grid-template-columns: 3.4ch 1fr; }
.form__rail li.on { color: var(--paper); }
.form__rail li.done { color: var(--concrete); }
.form__rail li.done::after { content: "✓"; }
.step { display: none; }
.step.on { display: block; animation: stepin .8s var(--ease); }
@keyframes stepin { from { opacity: 0; transform: translateY(16px); } }
.step legend { font-stretch: 72%; font-weight: 540; text-transform: uppercase; font-size: clamp(2rem, 4.6vw, 4.8rem); line-height: 0.92; padding: 0; margin-bottom: 30px; }
.step fieldset, fieldset.step { border: 0; padding: 0; margin: 0; min-width: 0; }
.choices { display: flex; flex-wrap: wrap; gap: 10px; }
.choices label { cursor: pointer; }
.choices input { position: absolute; opacity: 0; pointer-events: none; }
.choices span { display: inline-block; padding: 12px 18px; border: 1px solid rgba(238,235,228,.3); font-family: var(--f-mono); font-size: .76rem; letter-spacing: .08em; text-transform: uppercase; transition: background .3s, color .3s, border-color .3s; }
.choices input:checked + span { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.choices input:focus-visible + span { outline: 1px solid var(--accent); outline-offset: 3px; }
.field { display: block; border-bottom: 1px solid rgba(238,235,228,.3); padding: 10px 0; margin-bottom: 18px; }
.field span { display: block; color: var(--concrete); }
.field input, .field textarea { width: 100%; background: transparent; border: 0; color: var(--paper); font: inherit; font-size: clamp(1.2rem, 2vw, 1.7rem); padding: 6px 0; outline: none; resize: vertical; }
.field:focus-within { border-color: var(--rose); }
.form__nav { display: flex; gap: 14px; margin-top: 34px; align-items: center; flex-wrap: wrap; }
.form__nav .back { color: var(--concrete); font-family: var(--f-mono); font-size: .76rem; letter-spacing: .1em; text-transform: uppercase; }
.form__done { font-size: var(--fs-l); font-stretch: 75%; text-transform: uppercase; line-height: 1; }

.foot { padding-block: clamp(80px, 12vh, 140px) 30px; }
.foot__cta { display: block; padding-bottom: clamp(50px, 8vh, 90px); border-bottom: 1px solid rgba(251,248,245,.14); }
.foot__cta .display { display: block; font-size: var(--fs-xl); margin-top: 14px; transition: font-stretch .7s var(--ease); }
.foot__cta:hover .display { font-stretch: 78%; }
.foot__cols { padding-top: 46px; }
.foot__cols > div { grid-column: span 3; }
.foot__cols address, .foot__cols p { font-style: normal; margin: 8px 0 0; }
.foot__base { margin-top: 60px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--concrete); }
.foot__mark { width: min(100%, 640px); height: auto; margin-top: 70px; }

/* ─── PAGE PROJET (monographie) ─── */
.p-hero { height: 100svh; min-height: 520px; position: relative; overflow: hidden; background: var(--ink); color: var(--paper); }
.p-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: brightness(.7); }
.p-hero__t { position: absolute; left: var(--gut); right: var(--gut); bottom: 30px; }
.p-hero__t .display { font-size: clamp(3rem, 10vw, 12rem); }
.p-data { padding-block: clamp(60px, 10vh, 120px); }
.p-data dl { grid-column: 1 / span 12; display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; margin: 0; }
.p-data dt { color: var(--concrete-d); margin-bottom: 8px; }
.p-data dd { margin: 0; font-stretch: 78%; font-weight: 520; text-transform: uppercase; font-size: clamp(1.4rem, 2.6vw, 2.6rem); line-height: 1; }
.p-block { padding-block: clamp(70px, 12vh, 150px); }
.p-block h2 { margin: 0 0 22px; }
.p-chal .lede { grid-column: 4 / span 8; max-width: none; font-size: clamp(1.6rem, 3.4vw, 3.4rem); line-height: 1.12; font-weight: 360; }
.p-chal .label { grid-column: 1 / span 2; }
.p-resp__img { width: 100%; aspect-ratio: 2.1 / 1; overflow: hidden; }
.p-resp__img img { width: 100%; height: 100%; object-fit: cover; }
.p-resp__txt { margin-top: 24px; }
.p-resp__txt .label { grid-column: 1 / span 2; }
.p-resp__txt p { grid-column: 7 / span 5; margin: 0; font-size: var(--fs-m); line-height: 1.35; }
.p-tech { border-top: 1px solid rgba(18,18,17,.14); }
.p-tech .label { grid-column: 1 / span 3; }
.p-tech figure { grid-column: 4 / span 9; margin: 0; }
.p-tech figure svg { width: 100%; height: auto; max-height: 72vh; overflow: visible; }
.p-tech figcaption { margin-top: 14px; color: var(--concrete-d); }
.p-tech .plan-m { fill: #e2ded5; stroke: var(--ink); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.p-tech .plan-up { fill: none; stroke: var(--accent); stroke-width: 1.4; stroke-dasharray: 6 4; vector-effect: non-scaling-stroke; }
.p-tech .axis { stroke: rgba(18,18,17,.12); stroke-width: 1; vector-effect: non-scaling-stroke; }
.p-tech .dimline { stroke: var(--ink); stroke-width: .8; fill: none; vector-effect: non-scaling-stroke; }
.p-tech.dark .member { fill: none; stroke: var(--paper); stroke-width: 3; vector-effect: non-scaling-stroke; }
.p-tech.dark .member.thin { stroke-width: 1; opacity: .6; }
.p-tech.dark .axis { stroke: rgba(238,235,228,.14); stroke-dasharray: 2 5; }
.p-tech.dark .axis-c { fill: none; stroke: rgba(238,235,228,.4); }
.p-tech.dark .ground { stroke: var(--paper); opacity: .5; }
.p-tech.dark .t-mono { fill: var(--paper); }
.p-tech.dark .t-mono.dim { fill: var(--concrete); }
.p-tech.dark .t-mono.acc { fill: var(--orange-d); }
.p-tech.dark .node { fill: var(--ink); stroke: var(--paper); }
.p-tech.dark .dimline { stroke: var(--concrete); }
.p-tech.dark .force { fill: none; stroke: var(--paper); stroke-width: 1; }
.p-tech.dark .force.strong { stroke: var(--accent); stroke-width: 2; }
.p-tech.dark .moment { fill: none; stroke: var(--accent); stroke-width: 1.6; }
[data-only] .mode { display: none; }
[data-only="modules"] .mode[data-mode="modules"], [data-only="structure"] .mode[data-mode="structure"],
[data-only="architecture"] .mode[data-mode="architecture"] { display: inline; }
[data-only] svg { width: 100%; height: auto; overflow: visible; }
.p-det { grid-column: 1 / span 12; display: grid; grid-template-columns: 5fr 4fr 3fr; gap: clamp(12px, 1.6vw, 28px); align-items: start; }
.p-det figure { margin: 0; }
.p-det figure:nth-child(2) { margin-top: 18vh; }
.p-det figure:nth-child(3) { margin-top: 6vh; }
.p-det img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.p-det figcaption { margin-top: 8px; color: var(--concrete-d); }
.p-result { height: 100svh; position: relative; overflow: hidden; }
.p-result img { width: 100%; height: 100%; object-fit: cover; }
.p-result .label { position: absolute; left: var(--gut); bottom: 24px; color: var(--paper); }
.p-next { padding-block: clamp(80px, 14vh, 170px); display: block; }
.p-next .display { font-size: var(--fs-xl); transition: font-stretch .7s var(--ease), color .4s; }
.p-next:hover .display { font-stretch: 80%; color: var(--accent); }
.p-note { margin-top: 18px; color: var(--concrete-d); }

/* ═══════════ PAGES (arborescence excity.eu) ═══════════ */
.menu__plus { display: flex; flex-wrap: wrap; gap: 10px 24px; padding: 22px 0; border-top: 1px solid rgba(251,248,245,.12); }

/* aiguillage Particuliers / Professionnels */
.split { display: flex; height: min(92svh, 900px); min-height: 560px; background: var(--plum); }
.split__side { position: relative; flex: 1; overflow: hidden; color: var(--paper); transition: flex-grow 1s var(--ease-heavy); }
.split__side:hover, .split__side:focus-visible { flex-grow: 1.55; }
.split__side picture, .split__side img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.split__side img { transform: scale(1.04); transition: transform 1.6s var(--ease); }
.split__side:hover img { transform: none; }
.split__veil { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(30,22,34,.15) 30%, rgba(30,22,34,.82) 100%); }
.split__side + .split__side { border-left: 1px solid rgba(251,248,245,.25); }
.split__txt { position: absolute; left: clamp(20px, 3vw, 48px); right: clamp(20px, 3vw, 48px); bottom: clamp(26px, 5vh, 56px); display: grid; gap: 14px; }
.split__txt .display { font-size: clamp(2.6rem, 6.4vw, 7.4rem); }
.split__sub { max-width: 38ch; opacity: .9; }
.split__go { display: inline-block; padding-top: 14px; border-top: 1px solid transparent; border-image: var(--grad) 1; width: max-content; }

/* en-tête de page avec image */
.phead { display: grid; grid-template-columns: 58fr 42fr; min-height: 100svh; }
.phead--r { grid-template-columns: 42fr 58fr; }
.phead--r .phead__img { order: 2; }
.phead__img { position: relative; overflow: hidden; }
.phead__img img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.phead__txt { padding: 140px var(--gut) 50px; display: flex; flex-direction: column; justify-content: flex-end; gap: 22px; }
.phead__txt .display { font-size: clamp(3rem, 6.6vw, 7.8rem); }
.phead__txt .lede { max-width: 32ch; }
/* en-tête de page texte */
.thead { padding-block: clamp(150px, 24vh, 260px) clamp(50px, 8vh, 90px); }
.thead .display.mega { margin-top: 18px; }
.thead__lede { margin-top: 36px; max-width: 40ch; }
.wide { overflow: hidden; }
.wide img { width: 100%; height: min(100svh, 62vw); object-fit: cover; }
.wide--short img { height: min(70svh, 50vw); }

.intro { padding-block: clamp(90px, 15vh, 180px); }
.intro__k { grid-column: 1 / span 3; margin: 0; }
.intro__t { grid-column: 5 / span 7; max-width: none; }
.big { font-size: var(--fs-m); line-height: 1.3; font-weight: 380; margin-bottom: 1.1em !important; }

.pros { padding-block: 0 clamp(90px, 14vh, 170px); }
.pros__list { list-style: none; margin: 30px 0 0; padding: 0; }
.pros__list li { display: grid; grid-template-columns: 6ch auto 1fr; gap: 0 clamp(16px, 3vw, 48px); align-items: baseline; padding: clamp(14px, 2.4vh, 26px) 0; border-top: 1px solid rgba(30,22,34,.12); }
.pros__list li:last-child { border-bottom: 1px solid rgba(30,22,34,.12); }
.pros__list .display { font-size: clamp(2rem, 5vw, 5.4rem); }
.pros__list li > span:last-child { max-width: 34ch; color: var(--concrete-d); }

.duo { padding-block: clamp(80px, 12vh, 150px); }
.duo .grid12 { align-items: center; }
.duo__img { grid-column: 1 / span 6; aspect-ratio: 4 / 3.2; overflow: hidden; }
.duo__img img { width: 100%; height: 100%; object-fit: cover; }
.duo__txt { grid-column: 8 / span 5; }
.duo__txt:first-child { grid-column: 1 / span 5; }
.duo__txt:first-child + .duo__img { grid-column: 7 / span 6; }
.duo__txt .display { margin: 14px 0 24px; }

.packs { padding-block: clamp(90px, 14vh, 170px); background: var(--paper-2); }
.packs__head { margin-bottom: clamp(50px, 9vh, 110px); }
.packs__head .display { margin: 18px 0 30px; }
.packs__head .lede { max-width: 46ch; }
.pack { display: grid; grid-template-columns: minmax(150px, 2fr) 5fr 4fr; gap: clamp(20px, 3vw, 56px); padding: clamp(30px, 5vh, 56px) 0; border-top: 1px solid rgba(30,22,34,.14); align-items: start; scroll-margin-top: 90px; }
.pack__n .display { display: block; font-size: clamp(4rem, 9vw, 9.5rem); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.pack__n .label { display: block; margin-top: 10px; }
.pack__b h3 { font-size: clamp(2rem, 3.8vw, 3.9rem); }
.pack__lead { font-size: var(--fs-m); line-height: 1.3; margin: 16px 0 22px; max-width: 30ch; }
.pack__items { list-style: none; margin: 0; padding: 0; }
.pack__items li { padding: 10px 0 10px 28px; border-top: 1px solid rgba(30,22,34,.1); position: relative; }
.pack__items li::before { content: ""; position: absolute; left: 0; top: 1.05em; width: 14px; height: 2px; background: var(--grad); }
.pack__fig { align-self: center; }
.pack__img { aspect-ratio: 4 / 3; overflow: hidden; }
.pack__img img { width: 100%; height: 100%; object-fit: cover; }
.packs__note { margin-top: 30px; padding-top: 22px; border-top: 1px solid rgba(30,22,34,.14); }

.quote { padding-block: clamp(100px, 16vh, 200px); }
.quote .display { font-size: clamp(2rem, 4.4vw, 4.8rem); line-height: .98; max-width: 22ch; }
.quote__foot { margin-top: 44px; display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }

.missions { padding-block: clamp(80px, 12vh, 150px); }
.missions__head { margin-bottom: clamp(40px, 7vh, 80px); }
.missions__head .display { margin-top: 16px; }
.mission { display: grid; grid-template-columns: minmax(120px, 2fr) 4fr 6fr; gap: clamp(20px, 3vw, 56px); padding: clamp(26px, 4.5vh, 50px) 0; border-top: 1px solid rgba(30,22,34,.14); align-items: start; scroll-margin-top: 90px; }
.mission:last-child { border-bottom: 1px solid rgba(30,22,34,.14); }
.mission__n { font-size: clamp(2.4rem, 4vw, 4rem); color: var(--concrete); transition: color .6s; }
.mission:hover .mission__n { color: var(--orange); }
.mission h3 { font-size: clamp(2.2rem, 4.6vw, 5rem); }
.mission__lead { margin: 0 0 14px; color: var(--concrete-d); max-width: 46ch; }
.mission__items { list-style: none; margin: 0; padding: 0; }
.mission__items--2 { columns: 2; column-gap: 32px; }
.mission__items li { padding: 9px 0 9px 26px; position: relative; break-inside: avoid; }
.mission__items li::before { content: ""; position: absolute; left: 0; top: 1em; width: 12px; height: 2px; background: var(--grad); }

.bimimg { padding-block: 0 clamp(90px, 14vh, 170px); }
.bimimg__img img { width: 100%; height: auto; }
.bimimg__txt { margin-top: 24px; }
.bimimg__txt .label { grid-column: 1 / span 3; }
.bimimg__txt p:last-child { grid-column: 5 / span 7; margin: 0; font-size: var(--fs-m); line-height: 1.32; }

.links { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid rgba(30,22,34,.14); }
.links__a { padding: clamp(40px, 7vh, 80px) 0; display: grid; gap: 12px; }
.links__a + .links__a { border-left: 1px solid rgba(30,22,34,.14); padding-left: clamp(20px, 3vw, 48px); }
.links__a .display { font-size: clamp(2rem, 4vw, 4.4rem); transition: font-stretch .6s var(--ease); }
.links__a:hover .display { font-stretch: 80%; }

/* galerie : rythme irrégulier, pas de grille de vignettes */
.gal { display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(14px, 2vw, 32px); padding-block: 0 clamp(90px, 14vh, 170px); align-items: start; }
.gal__it { margin: 0; }
.gal__it:nth-child(7n+1) { grid-column: 1 / span 8; }
.gal__it:nth-child(7n+2) { grid-column: 9 / span 4; margin-top: 30vh; }
.gal__it:nth-child(7n+3) { grid-column: 2 / span 5; }
.gal__it:nth-child(7n+4) { grid-column: 7 / span 6; margin-top: 12vh; }
.gal__it:nth-child(7n+5) { grid-column: 1 / span 12; }
.gal__it:nth-child(7n+6) { grid-column: 1 / span 4; }
.gal__it:nth-child(7n+7) { grid-column: 6 / span 7; margin-top: 18vh; }
.gal__btn { display: block; width: 100%; overflow: hidden; }
.gal__btn img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform 1.4s var(--ease); }
.gal__it:nth-child(7n+5) .gal__btn img { aspect-ratio: 21 / 9; }
.gal__btn:hover img { transform: scale(1.03); }
.gal__it figcaption { display: flex; gap: 16px; margin-top: 10px; color: var(--concrete-d); }
.lightbox { border: 0; padding: 0; max-width: none; max-height: none; width: 100vw; height: 100vh; background: rgba(30,22,34,.96); color: var(--paper); }
.lightbox::backdrop { background: transparent; }
.lightbox[open] { display: grid; grid-template-rows: auto 1fr auto; }
.lightbox img { width: 100%; height: 100%; object-fit: contain; padding: 0 var(--gut); min-height: 0; }
.lightbox__x { justify-self: end; padding: 22px var(--gut); }
.lightbox__nav { display: flex; justify-content: space-between; padding: 20px var(--gut); }

/* références : une ligne qui s'ouvre sur sa maquette */
.refs { padding-block: clamp(80px, 12vh, 150px); background: var(--paper-2); }
.refs__head { align-items: end; margin-bottom: 36px; }
.refs__head .display { grid-column: 1 / span 8; }
.refs__head .label { grid-column: 9 / span 4; text-align: right; }
.refs__cols, .ref summary { display: grid; grid-template-columns: 6ch 1fr 18ch 18ch 9ch; gap: 16px; align-items: center; }
.refs__cols { padding-bottom: 10px; }
.ref { border-top: 1px solid rgba(30,22,34,.14); }
.ref:last-of-type { border-bottom: 1px solid rgba(30,22,34,.14); }
.ref summary { list-style: none; cursor: pointer; padding: clamp(12px, 1.6vw, 20px) 0; }
.ref summary::-webkit-details-marker { display: none; }
.ref__nm { font-stretch: 70%; font-weight: 540; text-transform: uppercase; font-size: clamp(1.7rem, 3.8vw, 4.2rem); line-height: .92; transition: transform .7s var(--ease); }
.ref summary:hover .ref__nm, .ref[open] .ref__nm { transform: translateX(clamp(8px, 1.4vw, 22px)); }
.ref[open] .ref__nm { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ref__m2 { text-align: right; }
.ref__body { display: grid; grid-template-columns: 5fr 2fr 4fr; gap: clamp(20px, 3vw, 48px); padding: 10px 0 40px; align-items: center; animation: stepin .8s var(--ease); }
.ref__data { display: grid; gap: 14px; margin: 0; }
.ref__data dd { margin: 4px 0 0; }
.ref__txt p { margin: 0 0 18px; }
.refs__note { margin-top: 22px; }

.acces { padding-block: clamp(90px, 14vh, 170px); }
.acces .grid12 { align-items: center; }
.acces__t { grid-column: 1 / span 5; }
.acces__t .display { margin: 14px 0 18px; }
.acces__map { grid-column: 7 / span 6; }
.acces__map svg { width: 100%; height: auto; }
.acces__map .label { margin-top: 10px; }

.jobs { padding-block: 0 clamp(90px, 14vh, 160px); }
.jobs__cols, .job { display: grid; grid-template-columns: 14ch 1fr 12ch 12ch; gap: 16px; align-items: center; }
.jobs__cols { padding-bottom: 10px; }
.job { padding: clamp(18px, 3vh, 32px) 0; border-top: 1px solid rgba(30,22,34,.14); }
.job h2 { font-size: clamp(1.7rem, 3.6vw, 4rem); }
.jobs__apply { border-top: 1px solid rgba(30,22,34,.14); padding-top: 34px; display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }

.guar { padding-block: 0 clamp(70px, 11vh, 130px); }
.guar__list { list-style: none; margin: 24px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0 clamp(20px, 3vw, 54px); }
.guar__list .display { font-size: clamp(2.4rem, 6vw, 6.8rem); }
.guar__list li:nth-child(odd) .display { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.partner { padding-block: clamp(70px, 11vh, 130px); background: var(--paper-2); }
.partner .grid12 { align-items: center; }
.partner__img { grid-column: 1 / span 6; aspect-ratio: 4 / 3; overflow: hidden; }
.partner__img img { width: 100%; height: 100%; object-fit: cover; }
.partner__txt { grid-column: 8 / span 5; }
.partner__txt .display { margin: 12px 0 18px; }

.legal { padding-block: 0 clamp(90px, 14vh, 160px); }
.legal__t { max-width: 74ch; }
.legal__t h2 { margin: 2.4em 0 .8em; }
.legal__t h3 { font-size: 1rem; margin: 1.6em 0 .5em; }

.nums__more { grid-column: 1 / -1; margin-top: clamp(30px, 6vh, 60px); }
.fields2 { display: grid; grid-template-columns: 1fr 1fr; column-gap: 28px; }
.check { display: flex; gap: 12px; align-items: flex-start; margin: 14px 0 0; cursor: pointer; color: var(--concrete); }
.check input { accent-color: var(--rose); width: 18px; height: 18px; margin-top: 3px; flex: none; }
.field input, .field textarea { color: var(--paper); }

/* ─── Mobile : compositions dédiées ─── */
@media (max-width: 900px) {
  .hdr { grid-template-columns: 1fr auto; padding: 14px var(--gut); }
  .hdr__nav { display: none; }
  .hdr__right { gap: 16px; }
  .hdr__cta { padding: 9px 13px; font-size: .6rem; box-shadow: 0 4px 14px rgba(238,123,234,.3); }
  .chap { bottom: 14px; }
  .hero__top { top: 74px; }
  .hero__top .label:last-child { display: none; }
  .hero__title { bottom: 96px; }
  .hero__title .display { font-size: clamp(2.5rem, 12.6vw, 5rem); }

  .manifest .display, .manifest__meta, .manifest__txt { grid-column: 1 / -1; }
  .manifest__meta { margin-top: 40px; }
  .manifest__txt { margin-top: 18px; }

  .matiere { height: 78svh; }

  .transfo { height: 560vh; }
  .transfo__pin { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .transfo__side { padding: 76px var(--gut) 0; }
  .transfo__steps { display: none; }
  .transfo__now { min-height: 0; }
  .transfo__now .display { font-size: clamp(2.6rem, 13vw, 4.6rem); }
  .transfo__now p { font-size: .98rem; }
  .transfo__svg { inset: 10px var(--gut) 90px var(--gut); }
  .transfo__photo::after { background: linear-gradient(180deg, var(--paper) 0%, rgba(238,235,228,0) 30%); }
  .transfo__coupe { width: 64vw; bottom: 64px; left: var(--gut); right: auto; }
  .transfo__dims { left: var(--gut); bottom: 30px; }
  .transfo__prog { display: block; top: 64px; }
  .transfo__prog i { position: absolute; inset: 0; background: var(--accent); transform-origin: left; transform: scaleX(var(--p, 0)); }

  .archive__head .display, .archive__head .label { grid-column: 1 / -1; text-align: left; }
  .archive__head .label { margin-top: 16px; }
  .archive__cols { display: none; }
  .idx a { grid-template-columns: 1fr auto; grid-template-areas: "img img" "nm nm" "num meta"; gap: 8px 12px; padding: 22px 0 18px; }
  .idx .thumb { grid-area: img; display: block; aspect-ratio: 2 / 1; overflow: hidden; margin-bottom: 8px; }
  .idx .thumb img { width: 100%; height: 100%; object-fit: cover; }
  .idx .nm { grid-area: nm; font-size: clamp(1.9rem, 9vw, 3rem); }
  .idx .n { grid-area: num; }
  .idx .lc, .idx .ty { display: none; }
  .idx .st-pill { grid-area: meta; }
  .idx:hover a { opacity: 1; }
  .archive__float { display: none; }

  .anat__head .display, .anat__head p, .anat__fig, .anat__ctl { grid-column: 1 / -1; }
  .anat__head p { margin-top: 18px; }
  .anat__ctl { margin-top: 10px; }
  .anat__list { display: flex; overflow-x: auto; gap: 8px; margin: 0 calc(var(--gut) * -1) 18px; padding: 0 var(--gut); scrollbar-width: none; }
  .anat__list li { flex: none; }
  .anat__list button { border: 1px solid rgba(18,18,17,.2) !important; padding: 10px 14px; grid-template-columns: auto auto; gap: 8px; }
  .anat__list button::after { display: none; }
  .anat__list .nm { font-size: 1rem; }
  .layer text { font-size: 17px; }

  .engi { height: 240vh; }
  .engi__pin { padding: 76px var(--gut) 26px; }
  .engi__head { flex-direction: column; align-items: start; gap: 10px; }
  .engi__foot { grid-template-columns: repeat(3, 1fr); row-gap: 6px; }
  .engi .t-mono { font-size: 15px; }

  .bim__head .display, .bim__head p { grid-column: 1 / -1; }
  .bim__head p { margin-top: 16px; }
  .bim__tool { grid-template-columns: 1fr; min-height: 0; }
  .bim__tabs { order: 2; border: 0; border-top: 1px solid rgba(18,18,17,.18); display: flex; overflow-x: auto; padding: 0; scrollbar-width: none; }
  .bim__tabs button { flex: none; width: auto; padding: 14px 16px; grid-template-columns: auto auto auto; }
  .bim__view { order: 1; aspect-ratio: 1 / 1; }
  .bim__view svg { inset: 8%; width: 84%; height: 84%; }
  .bim__info { order: 3; border: 0; padding: 18px var(--gut) 40px; }
  .bim__view .t-mono { font-size: 16px; }

  .human__img, .human__txt, .human__cap { grid-column: 1 / -1; }
  .human__img { aspect-ratio: 4 / 5; }
  .human__txt { margin-top: 30px; }

  .pause { height: 150vh; }

  .nums { grid-template-columns: 1fr 1fr; row-gap: 34px; }
  .nums__val { font-size: clamp(3rem, 15vw, 4.6rem); }

  .with__row { flex-direction: column; gap: 4px; }
  .with__row button { font-size: clamp(2.2rem, 11vw, 3.6rem); }
  .with__stage { display: block; }
  .with__txt { margin-top: 20px; }

  .dna { height: 400vh; }
  .dna__pin { grid-template-columns: 1fr; grid-template-rows: 46svh 1fr; }
  .dna__media { order: -1; }
  .dna__type { padding: 22px var(--gut) 26px; }
  .dna__words { font-size: clamp(2.8rem, 14vw, 5rem); }
  .dna__detail { width: 170px; padding: 10px; right: 12px; bottom: 12px; }
  .dna__detail .label { font-size: 0.6rem; }

  .contact__q .lede, .contact__q .go { grid-column: 1 / -1; justify-self: start; }
  .contact__q .go { margin-top: 30px; }
  .form { grid-template-columns: 1fr; }
  .form__rail { grid-auto-flow: column; overflow-x: auto; gap: 18px; }
  .form__rail li span:last-child { display: none; }
  .foot__cols > div { grid-column: span 6; margin-bottom: 26px; }

  .p-data dl { grid-template-columns: 1fr 1fr; }
  .p-chal .label, .p-chal .lede, .p-resp__txt .label, .p-resp__txt p, .p-tech .label, .p-tech figure { grid-column: 1 / -1; }
  .p-chal .lede { margin-top: 14px; }
  .p-resp__txt p { margin-top: 12px; }
  .p-resp__img { aspect-ratio: 4 / 3; }
  .p-tech figure { margin-top: 18px; }
  .p-det { grid-template-columns: 1fr 1fr; }
  .p-det figure:nth-child(2) { margin-top: 10vh; }
  .p-det figure:nth-child(3) { grid-column: 1 / -1; margin-top: 0; }
}
@media (max-width: 900px) {
  .split { flex-direction: column; height: auto; min-height: 0; }
  .split__side { height: 72svh; flex: none; }
  .split__side + .split__side { border-left: 0; border-top: 1px solid rgba(251,248,245,.25); }
  .phead, .phead--r { grid-template-columns: 1fr; min-height: 0; }
  .phead--r .phead__img { order: 0; }
  .phead__img { height: 58svh; }
  .phead__txt { padding: 34px var(--gut) 50px; }
  .phead__txt .display { font-size: clamp(2.8rem, 13vw, 4.6rem); }
  .intro__k, .intro__t, .duo__img, .duo__txt, .duo__txt:first-child, .duo__txt:first-child + .duo__img,
  .bimimg__txt .label, .bimimg__txt p:last-child, .acces__t, .acces__map, .partner__img, .partner__txt,
  .refs__head .display, .refs__head .label { grid-column: 1 / -1; text-align: left; }
  .intro__t, .duo__txt, .bimimg__txt p:last-child, .acces__map, .partner__txt, .refs__head .label { margin-top: 22px; }
  .duo__txt:first-child + .duo__img { margin-top: 30px; }
  .pros__list li { grid-template-columns: 4ch 1fr; }
  .pros__list li > span:last-child { grid-column: 2; margin-top: 6px; }
  .pack, .mission { grid-template-columns: 1fr; gap: 14px; }
  .pack__n .display { font-size: 4.2rem; }
  .mission__items--2 { columns: 1; }
  .links { grid-template-columns: 1fr; }
  .links__a + .links__a { border-left: 0; padding-left: 0; border-top: 1px solid rgba(30,22,34,.14); }
  .gal { grid-template-columns: 1fr; }
  .gal__it:nth-child(n) { grid-column: 1; margin-top: 0; }
  .refs__cols { display: none; }
  .ref summary { grid-template-columns: 4ch 1fr auto; }
  .ref__lc, .ref__ty { display: none; }
  .ref__body { grid-template-columns: 1fr; }
  .jobs__cols { display: none; }
  .job { grid-template-columns: 1fr auto; gap: 6px 16px; }
  .job h2 { grid-column: 1 / -1; order: -1; }
  .fields2 { grid-template-columns: 1fr; }
  .wide img { height: 60svh; }
}

/* ─── Mouvement réduit : tout est là, rien ne bouge ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; transition-delay: 0s !important; scroll-behavior: auto !important; }
  .rise > span, .fade { transform: none; opacity: 1; }
  .hero__img, .hero__title, .human__img img { transform: none !important; }
}
[hidden] { display: none !important; }