/* ============================================================
   GREEN ISOL — Design System v2 « Éditorial Premium »
   Inspiré des codes des leaders BTP : typographie display,
   photographie plein cadre, listes numérotées, bandes sombres.
   ============================================================ */

@font-face {
  font-family: "Archivo";
  src: url("../assets/fonts/archivo-2.woff2") format("woff2");
  font-weight: 400 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Archivo";
  src: url("../assets/fonts/archivo-1.woff2") format("woff2");
  font-weight: 400 800;
  font-style: italic;
  font-display: swap;
}

:root {
  --paper: #f4f2ec;
  --surface: #ffffff;
  --ink: #10150f;
  --ink-2: #4c544c;
  --line: #ddd9cf;
  --line-dark: rgba(255,255,255,.14);
  --green: #2e6b3f;
  --green-deep: #123322;
  --night: #0c140e;
  --night-2: #101b12;
  --on-night: #eef0ea;
  --on-night-2: #9aa89b;
  --maxw: 1280px;
  --gutter: clamp(20px, 4vw, 56px);
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Archivo", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }

::selection { background: var(--green); color: #fff; }

/* ---------- Typographie ---------- */
.overline {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: .78rem; font-weight: 600; letter-spacing: .22em; text-transform: uppercase;
  color: var(--green);
}
.overline::before { content: ""; width: 34px; height: 1px; background: currentColor; }
.on-dark .overline { color: #8fbf9d; }
h1.display {
  font-size: clamp(2.5rem, 6.4vw, 5rem);
  line-height: 1.02; font-weight: 750; letter-spacing: -.022em;
  text-wrap: balance;
}
h2.display {
  font-size: clamp(1.9rem, 4.2vw, 3.3rem);
  line-height: 1.06; font-weight: 720; letter-spacing: -.018em;
  text-wrap: balance;
}
h3 { font-weight: 680; letter-spacing: -.01em; }
p.lead { font-size: clamp(1rem, 1.35vw, 1.15rem); color: var(--ink-2); max-width: 62ch; }
.on-dark p.lead { color: var(--on-night-2); }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 28px; font-weight: 640; font-size: .92rem; letter-spacing: .02em;
  border: 1px solid transparent; cursor: pointer;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
}
.btn .arr { transition: transform .3s var(--ease); font-weight: 400; }
.btn:hover .arr { transform: translateX(5px); }
.btn-solid { background: var(--green); color: #fff; }
.btn-solid:hover { background: var(--green-deep); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--green); }
.btn-line { border-color: currentColor; color: var(--ink); background: transparent; }
.btn-line:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.on-dark .btn-line { color: #fff; }
.on-dark .btn-line:hover { background: #fff; color: var(--ink); border-color: #fff; }

.link-more { font-weight: 640; font-size: .95rem; border-bottom: 1.5px solid var(--green); padding-bottom: 3px; transition: color .2s; }
.link-more:hover { color: var(--green); }

/* ---------- Header ---------- */
header.site {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .35s var(--ease), box-shadow .35s var(--ease), transform .35s var(--ease);
  color: #fff;
}
header.site .bar {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex; align-items: center; gap: 40px;
  height: 84px;
  transition: height .35s var(--ease);
}
header.site.solid { background: rgba(244,242,236,.94); backdrop-filter: blur(14px); color: var(--ink); box-shadow: 0 1px 0 var(--line); }
header.site.solid .bar { height: 68px; }
header.site.on-light { color: var(--ink); }
header.site.on-light:not(.solid) { background: transparent; }

.logo { display: flex; align-items: center; }
.logo img, .logo svg { height: 42px; width: auto; transition: height .35s var(--ease); }
header.site.solid .logo img { height: 36px; }
header.site:not(.solid):not(.on-light) .logo img { filter: brightness(0) invert(1); }
header.site:not(.solid):not(.menu-open) .logo { opacity: 0; visibility: hidden; transition: opacity .3s var(--ease), visibility .3s; }
header.site.solid .logo, header.site.menu-open .logo { opacity: 1; visibility: visible; transition: opacity .3s var(--ease); }

nav.main { display: flex; align-items: center; gap: 34px; margin-left: auto; }
nav.main > a {
  position: relative; font-size: .93rem; font-weight: 560; letter-spacing: .01em;
  padding: 6px 0; opacity: .92;
}
nav.main > a:not(.btn)::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 1.5px; width: 100%;
  background: currentColor; transform: scaleX(0); transform-origin: right;
  transition: transform .3s var(--ease);
}
nav.main > a:not(.btn):hover::after, nav.main > a.active::after { transform: scaleX(1); transform-origin: left; }
nav.main .btn { padding: 11px 22px; }
header.site:not(.solid) nav.main .btn-solid { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.4); backdrop-filter: blur(6px); }
header.site:not(.solid) nav.main .btn-solid:hover { background: #fff; color: var(--ink); }
header.site.solid nav.main .btn-solid { background: var(--green); color: #fff; }

.nav-toggle { display: none; margin-left: auto; background: none; border: 0; cursor: pointer; color: inherit; padding: 8px; }
.nav-toggle svg { width: 26px; height: 26px; }

@media (max-width: 960px) {
  nav.main {
    display: none; position: fixed; top: 0; right: 0; bottom: 0; width: min(86vw, 380px);
    background: var(--night); color: #fff; flex-direction: column; align-items: flex-start;
    padding: 110px 40px 40px; gap: 26px; z-index: 99;
  }
  nav.main.open { display: flex; }
  nav.main > a { font-size: 1.25rem; font-weight: 640; }
  .nav-toggle { display: block; z-index: 101; }
  header.site.menu-open { color: #fff !important; background: transparent !important; box-shadow: none !important; }
  header.site.menu-open .logo img { filter: brightness(0) invert(1) !important; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh; display: flex; align-items: flex-end;
  color: #fff; background: var(--night); overflow: hidden;
}
.hero .media, .hero .media video, .hero .media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero .media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(8,12,9,.55) 0%, rgba(8,12,9,.18) 40%, rgba(8,12,9,.78) 100%);
}
/* Hero graphique (sans photo) : trame architecte + halo */
.hero.graphic { background: radial-gradient(120% 90% at 82% 10%, #1b3a26 0%, var(--night) 55%); }
.hero.graphic::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background:
    repeating-linear-gradient(90deg, rgba(255,255,255,.045) 0 1px, transparent 1px 120px),
    repeating-linear-gradient(0deg, rgba(255,255,255,.045) 0 1px, transparent 1px 120px);
  mask-image: radial-gradient(110% 100% at 70% 20%, #000 30%, transparent 75%);
}
.hero.graphic::after {
  content: "GI"; position: absolute; right: -3vw; bottom: -6vh; z-index: 0;
  font-size: clamp(16rem, 34vw, 34rem); font-weight: 780; letter-spacing: -.05em; line-height: 1;
  color: rgba(255,255,255,.03); user-select: none; pointer-events: none;
}

/* ---------- Covers graphiques (en attendant les photos) ---------- */
.cover {
  position: absolute; inset: 0; overflow: hidden;
  background: linear-gradient(155deg, #1a3020 0%, #0f2015 55%, #0c1810 100%);
}
.cover::before {
  content: ""; position: absolute; inset: 0; opacity: .6;
  background:
    repeating-linear-gradient(90deg, rgba(255,255,255,.05) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(255,255,255,.05) 0 1px, transparent 1px 72px);
}
.cover::after {
  content: ""; position: absolute; left: -20%; top: -40%; width: 90%; aspect-ratio: 1;
  background: radial-gradient(circle, rgba(93,160,112,.16), transparent 65%);
}
.cover .cov-num {
  position: absolute; right: 18px; bottom: -14px;
  font-size: clamp(5rem, 9vw, 8.5rem); font-weight: 780; letter-spacing: -.04em; line-height: 1;
  color: rgba(255,255,255,.08);
}
.cover .cov-label {
  position: absolute; top: 18px; left: 20px;
  font-size: .7rem; font-weight: 660; letter-spacing: .18em; text-transform: uppercase;
  color: #8fbf9d;
}
.cover .cov-ico { position: absolute; left: 20px; bottom: 20px; width: 46px; height: 46px; opacity: .9; }
.cover .cov-ico svg { width: 100%; height: 100%; stroke: #cfe0d3; fill: none; stroke-width: 1.4; }
.hero .inner { position: relative; width: 100%; padding-bottom: clamp(40px, 6vh, 80px); }
.hero .overline { color: #a9c9b2; margin-bottom: 22px; }
.hero h1.display { max-width: 15ch; }
.hero p.sub { margin: 26px 0 34px; max-width: 56ch; font-size: clamp(.98rem, 1.3vw, 1.12rem); color: #cfd8cf; }
.hero .cta { display: flex; gap: 16px; flex-wrap: wrap; }

.hero .kpis {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255,255,255,.22); margin-top: clamp(36px, 6vh, 64px);
}
.hero .kpi { padding: 22px 26px 0 0; }
.hero .kpi b { display: block; font-size: clamp(1.7rem, 3vw, 2.6rem); font-weight: 740; letter-spacing: -.02em; line-height: 1.1; }
.hero .kpi b sup { font-size: .5em; font-weight: 640; color: #8fbf9d; vertical-align: super; }
.hero .kpi > span { font-size: .8rem; color: #9fae9f; letter-spacing: .04em; }
@media (max-width: 760px) {
  .hero .kpis { grid-template-columns: 1fr 1fr; }
  .hero .kpi { padding-top: 16px; }
}

.scroll-cue {
  position: absolute; right: var(--gutter); bottom: 40px;
  width: 1px; height: 64px; background: rgba(255,255,255,.3); overflow: hidden;
}
.scroll-cue::after {
  content: ""; position: absolute; left: 0; top: -50%; width: 100%; height: 50%;
  background: #fff; animation: cue 2s var(--ease) infinite;
}
@keyframes cue { 0% { top: -50%; } 100% { top: 110%; } }
@media (max-width: 900px) { .scroll-cue { display: none; } }

/* ---------- Marquee ---------- */
.marquee {
  background: var(--night); color: var(--on-night); overflow: hidden;
  border-top: 1px solid var(--line-dark); padding: 18px 0; white-space: nowrap;
}
.marquee .track { display: inline-block; animation: marquee 38s linear infinite; }
.marquee span {
  font-size: .95rem; font-weight: 620; letter-spacing: .16em; text-transform: uppercase;
  margin: 0 28px; color: #b9c6ba;
}
.marquee i { font-style: normal; color: var(--green); margin: 0 4px; }
@keyframes marquee { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) {
  .marquee .track { animation: none; }
  .scroll-cue::after { animation: none; }
}

/* ---------- Sections ---------- */
section.sec { padding: clamp(72px, 11vh, 130px) 0; }
section.sec.tight { padding: clamp(56px, 8vh, 90px) 0; }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: clamp(36px, 6vh, 64px); }
.sec-head .overline { margin-bottom: 16px; }
.sec-head .right { flex-shrink: 0; padding-bottom: 8px; }
@media (max-width: 700px) { .sec-head { flex-direction: column; align-items: flex-start; } }

.on-dark { background: var(--night); color: var(--on-night); }
.on-green { background: var(--green-deep); color: var(--on-night); }

/* ---------- Manifesto (éditorial) ---------- */
.manifesto { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: clamp(30px, 6vw, 90px); align-items: start; }
@media (max-width: 860px) { .manifesto { grid-template-columns: 1fr; } }
.manifesto .statement {
  font-size: clamp(1.5rem, 3vw, 2.5rem); line-height: 1.22; font-weight: 640; letter-spacing: -.015em;
  text-wrap: balance;
}
.manifesto .statement em { font-style: normal; color: var(--green); }
.manifesto .aside { display: flex; flex-direction: column; gap: 20px; padding-top: 10px; }
.manifesto .aside p { color: var(--ink-2); font-size: .98rem; }

/* ---------- Liste métiers numérotée ---------- */
.metiers { border-top: 1px solid var(--line); }
.metier-row {
  position: relative; display: grid;
  grid-template-columns: 90px minmax(0,1.2fr) minmax(0,1fr) 60px;
  align-items: center; gap: 24px;
  padding: 26px 0; border-bottom: 1px solid var(--line);
  transition: padding .35s var(--ease), background .35s var(--ease);
  cursor: pointer;
}
.metier-row .num {
  font-size: .85rem; font-weight: 620; color: var(--ink-2); letter-spacing: .1em;
  transition: color .3s;
}
.metier-row .name {
  font-size: clamp(1.15rem, 2.2vw, 1.7rem); font-weight: 680; letter-spacing: -.015em;
  transition: transform .35s var(--ease), color .3s;
}
.metier-row .desc { font-size: .9rem; color: var(--ink-2); }
.metier-row .go {
  justify-self: end; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%;
  display: grid; place-items: center; font-size: 1.05rem;
  transition: background .3s, color .3s, border-color .3s, transform .35s var(--ease);
}
.metier-row:hover { background: #ebf0ea; }
.metier-row:hover .name { transform: translateX(10px); color: var(--green-deep); }
.metier-row:hover .num { color: var(--green); }
.metier-row:hover .go { background: var(--green); border-color: var(--green); color: #fff; transform: rotate(-45deg); }
@media (max-width: 760px) {
  .metier-row { grid-template-columns: 48px 1fr 44px; }
  .metier-row .desc { display: none; }
}

/* Aperçu image flottant (desktop) */
.metier-preview {
  position: fixed; z-index: 60; width: 300px; aspect-ratio: 4/3; pointer-events: none;
  overflow: hidden; opacity: 0; transform: scale(.92) rotate(-2deg);
  transition: opacity .3s var(--ease), transform .35s var(--ease);
  box-shadow: 0 30px 60px -20px rgba(10,16,11,.45);
}
.metier-preview img { width: 100%; height: 100%; object-fit: cover; }
.metier-preview.show { opacity: 1; transform: scale(1) rotate(0deg); }
@media (max-width: 1000px), (hover: none) { .metier-preview { display: none; } }

/* ---------- Projets ---------- */
.projects { display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(16px, 2vw, 28px); }
.project { position: relative; overflow: hidden; background: var(--night); color: #fff; display: block; }
.project.p-lg { grid-column: span 7; aspect-ratio: 16/11; }
.project.p-md { grid-column: span 5; aspect-ratio: 4/3.14; }
.project.p-sm { grid-column: span 4; aspect-ratio: 4/3; }
@media (max-width: 860px) {
  .project.p-lg, .project.p-md, .project.p-sm { grid-column: span 12; aspect-ratio: 16/10; }
}
.project img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: transform .9s var(--ease), opacity .5s;
}
.project:hover img { transform: scale(1.06); }
.project::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(185deg, rgba(8,12,9,0) 42%, rgba(8,12,9,.82) 100%);
  transition: opacity .4s;
}
.project .cap {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 2;
  padding: clamp(18px, 2.4vw, 30px);
  display: flex; flex-direction: column; gap: 8px;
}
.project .cap .tags { display: flex; gap: 8px; flex-wrap: wrap; }
.project .cap .tag {
  font-size: .68rem; font-weight: 640; letter-spacing: .1em; text-transform: uppercase;
  padding: 5px 10px; border: 1px solid rgba(255,255,255,.35); color: #e4eae2;
  backdrop-filter: blur(4px);
}
.project .cap h3 { font-size: clamp(1.05rem, 1.8vw, 1.45rem); line-height: 1.25; max-width: 30ch; }
.project .cap .loc { font-size: .8rem; color: #b3bfb2; letter-spacing: .03em; }
.project .noimg {
  position: absolute; inset: 0; display: grid; place-items: center;
  background: repeating-linear-gradient(45deg, #17251a, #17251a 14px, #131f16 14px, #131f16 28px);
  color: #8fa393; font-size: .85rem; font-weight: 600; letter-spacing: .05em;
}

/* ---------- Bande chiffres ---------- */
.figures { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
@media (max-width: 860px) { .figures { grid-template-columns: 1fr 1fr; gap: 40px 24px; } }
.figure { border-top: 1px solid var(--line-dark); padding-top: 22px; }
.figure b {
  display: block; font-size: clamp(2.6rem, 5.4vw, 4.6rem); font-weight: 750;
  letter-spacing: -.03em; line-height: 1;
  font-variant-numeric: tabular-nums;
}
.figure b sup { font-size: .42em; font-weight: 640; color: #8fbf9d; vertical-align: super; }
.figure > span { display: block; margin-top: 10px; font-size: .88rem; color: var(--on-night-2); max-width: 24ch; }

/* ---------- Méthode / étapes ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(24px, 3vw, 44px); }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }
.step { border-top: 2px solid var(--line); padding-top: 24px; position: relative; }
.step::before {
  content: ""; position: absolute; top: -2px; left: 0; height: 2px; width: 0;
  background: var(--green); transition: width 1s var(--ease) .2s;
}
.step.in::before { width: 100%; }
.step .n { font-size: .8rem; font-weight: 640; color: var(--green); letter-spacing: .14em; }
.step h3 { font-size: 1.25rem; margin: 12px 0 10px; }
.step p { font-size: .93rem; color: var(--ink-2); }
.on-dark .step, .on-green .step { border-color: var(--line-dark); }
.on-dark .step p, .on-green .step p { color: var(--on-night-2); }
.steps-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1000px) { .steps-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .steps-4 { grid-template-columns: 1fr; } }

/* ---------- Citation ---------- */
.quote { max-width: 900px; margin: 0 auto; text-align: center; }
.quote blockquote {
  font-size: clamp(1.35rem, 2.6vw, 2.1rem); font-weight: 560; font-style: italic;
  line-height: 1.35; letter-spacing: -.01em;
}
.quote blockquote::before { content: "« "; color: var(--green); }
.quote blockquote::after { content: " »"; color: var(--green); }
.quote cite { display: block; margin-top: 26px; font-style: normal; font-size: .88rem; color: var(--ink-2); }
.quote cite b { display: block; font-size: .95rem; color: var(--ink); }
.on-dark .quote cite { color: var(--on-night-2); }
.on-dark .quote cite b { color: var(--on-night); }

/* ---------- Avant / Après ---------- */
.ba { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(16px, 2vw, 28px); }
@media (max-width: 800px) { .ba { grid-template-columns: 1fr; } }
.ba figure { position: relative; overflow: hidden; }
.ba video { width: 100%; aspect-ratio: 16/9; object-fit: cover; background: #000; }
.ba figcaption {
  position: absolute; top: 16px; left: 16px; z-index: 2;
  font-size: .72rem; font-weight: 660; letter-spacing: .14em; text-transform: uppercase;
  background: rgba(10,15,11,.78); color: #fff; padding: 8px 14px; backdrop-filter: blur(6px);
}
.ba figcaption.after { background: var(--green); }

/* ---------- CTA final ---------- */
.cta-final { text-align: left; }
.cta-final h2 { font-size: clamp(2.2rem, 5.4vw, 4.2rem); font-weight: 740; letter-spacing: -.025em; line-height: 1.04; max-width: 14ch; }
.cta-final .row { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; flex-wrap: wrap; margin-top: 40px; }
.cta-final .contact-direct { font-size: .9rem; color: var(--on-night-2); }
.cta-final .contact-direct a { display: block; font-size: clamp(1.3rem, 2.4vw, 1.9rem); font-weight: 700; color: #fff; margin-top: 6px; letter-spacing: -.01em; }
.cta-final .contact-direct a:hover { color: #8fbf9d; }

/* ---------- Formulaires ---------- */
form.consult { display: grid; gap: 18px; }
form.consult .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { form.consult .row2 { grid-template-columns: 1fr; } }
form.consult label { display: block; font-size: .78rem; font-weight: 640; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 8px; }
form.consult input, form.consult select, form.consult textarea {
  width: 100%; padding: 14px 16px; font-size: .95rem; font-family: inherit;
  background: var(--surface); color: var(--ink);
  border: 1px solid var(--line); border-radius: 0;
  transition: border-color .2s;
}
form.consult input:focus, form.consult select:focus, form.consult textarea:focus {
  outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(46,107,63,.12);
}
form.consult button { justify-self: start; }
.on-dark form.consult label { color: var(--on-night-2); }
.on-dark form.consult input, .on-dark form.consult select, .on-dark form.consult textarea {
  background: rgba(255,255,255,.06); color: #fff; border-color: var(--line-dark);
}
.on-dark form.consult ::placeholder { color: #7d8b7e; }

/* ---------- Filtres ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 40px; }
.filters .lbl { font-size: .74rem; font-weight: 660; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); margin-right: 8px; }
.chip {
  border: 1px solid var(--line); background: transparent; padding: 9px 18px;
  font-size: .85rem; font-weight: 580; font-family: inherit; cursor: pointer; color: var(--ink);
  transition: all .2s var(--ease);
}
.chip:hover { border-color: var(--green); color: var(--green-deep); }
.chip.on { background: var(--ink); border-color: var(--ink); color: var(--paper); }

/* ---------- Cartes références (page réalisations) ---------- */
.grid-refs { display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(16px, 2vw, 28px); }
.grid-refs .project { grid-column: span 6; aspect-ratio: 16/10; }
.grid-refs .project:nth-child(4n+1) { grid-column: span 7; }
.grid-refs .project:nth-child(4n+2) { grid-column: span 5; }
.grid-refs .project:nth-child(4n+3) { grid-column: span 5; }
.grid-refs .project:nth-child(4n+4) { grid-column: span 7; }
@media (max-width: 860px) { .grid-refs .project { grid-column: span 12 !important; } }

/* ---------- Page head interne ---------- */
.pagehead { background: var(--night); color: var(--on-night); padding: calc(84px + clamp(60px, 10vh, 110px)) 0 clamp(48px, 7vh, 80px); }
.pagehead h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 740; letter-spacing: -.022em; line-height: 1.05; max-width: 20ch; }
.pagehead p { margin-top: 22px; max-width: 60ch; color: var(--on-night-2); font-size: 1.02rem; }
.pagehead .overline { color: #8fbf9d; margin-bottom: 18px; }

/* ---------- Expertises ---------- */
.exp {
  display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.15fr); gap: clamp(28px, 4vw, 70px);
  padding: clamp(48px, 8vh, 90px) 0; border-bottom: 1px solid var(--line); align-items: center;
}
.exp:nth-of-type(even) .visual { order: 2; }
@media (max-width: 860px) { .exp { grid-template-columns: 1fr; } .exp:nth-of-type(even) .visual { order: 0; } }
.exp .visual { position: relative; overflow: hidden; aspect-ratio: 16/11; background: var(--night); }
.exp .visual img { width: 100%; height: 100%; object-fit: cover; transition: transform .9s var(--ease); }
.exp:hover .visual img { transform: scale(1.05); }
.exp .visual .noimg { position: absolute; inset: 0; display: grid; place-items: center; color: #8fa393;
  background: repeating-linear-gradient(45deg, #17251a, #17251a 14px, #131f16 14px, #131f16 28px); font-size: .85rem; font-weight: 600; }
.exp .n { font-size: .8rem; font-weight: 640; color: var(--green); letter-spacing: .16em; }
.exp h3 { font-size: clamp(1.4rem, 2.6vw, 2rem); margin: 14px 0 14px; letter-spacing: -.015em; }
.exp p { color: var(--ink-2); font-size: .97rem; max-width: 54ch; }
.exp ul { margin: 18px 0 24px; list-style: none; }
.exp ul li { padding: 9px 0; border-bottom: 1px solid var(--line); font-size: .92rem; color: var(--ink-2); display: flex; gap: 12px; }
.exp ul li::before { content: "—"; color: var(--green); }

/* ---------- Bandeau B2C ---------- */
.b2c { border-top: 1px solid var(--line); background: var(--surface); }
.b2c .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding-top: 26px; padding-bottom: 26px; }
.b2c p { font-size: .95rem; font-weight: 560; }

/* ---------- Footer ---------- */
footer.site { background: var(--night); color: var(--on-night-2); }
footer.site .top {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  padding: clamp(56px, 9vh, 90px) 0 50px;
}
@media (max-width: 900px) { footer.site .top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { footer.site .top { grid-template-columns: 1fr; } }
footer.site h4 { color: #fff; font-size: .78rem; font-weight: 660; letter-spacing: .16em; text-transform: uppercase; margin-bottom: 18px; }
footer.site a { display: block; padding: 4px 0; font-size: .92rem; transition: color .2s; }
footer.site a:hover { color: #fff; }
footer.site .brand img { height: 40px; filter: brightness(0) invert(1); margin-bottom: 20px; }
footer.site .brand p { font-size: .92rem; max-width: 34ch; }
footer.site .legal {
  border-top: 1px solid var(--line-dark);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 22px 0; font-size: .78rem;
}
.footer-word {
  font-size: clamp(3.4rem, 11vw, 9.5rem); font-weight: 780; letter-spacing: -.035em; line-height: .95;
  color: rgba(255,255,255,.06); text-transform: uppercase; white-space: nowrap;
  padding: 0 0 10px; user-select: none;
}

/* ---------- Split 2 colonnes ---------- */
.split2 { display: grid; grid-template-columns: minmax(0,1.4fr) minmax(0,1fr); gap: clamp(30px, 5vw, 80px); align-items: start; }
@media (max-width: 860px) { .split2 { grid-template-columns: 1fr; } }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .08s; }
.reveal[data-d="2"] { transition-delay: .16s; }
.reveal[data-d="3"] { transition-delay: .24s; }
.reveal[data-d="4"] { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .project img, .exp .visual img { transition: none; }
}

/* ---------- Anti-bugs d'interaction ---------- */
a, .btn { -webkit-user-drag: none; user-drag: none; }
.metiers, .metier-row, .project, .kpis, .figures, .marquee, .footer-word { -webkit-user-select: none; user-select: none; }
span.chip { cursor: default; }
button.chip { cursor: pointer; }

/* ---------- Divers ---------- */
.topnote { font-size: .8rem; color: var(--ink-2); }
.gridline { border-top: 1px solid var(--line); }