/* =========================================================
   DERICE — v15 « BUREAU D'ÉTUDE / BIM »
   Refonte — ATOM Studios

   Direction : dossier de bureau d'étude. Grille apparente,
   traits de construction et cotes (SVG inline, décoratifs),
   typographie mono pour les étiquettes / numéros / légendes,
   photos traitées en gris-bleu technique.

   Couleur d'identité = RAL 7035 (#d7d7d7), décision Rémi 04/09/2026.
   Les variables --teal* restent des ALIAS de --accent* pour ne pas
   toucher aux sélecteurs hérités (.text-teal, .tealtile…) :
   re-teinter le site = changer les trois --accent*.
   ========================================================= */

:root {
  --ink: #0e141a;          /* fond planche, graphite bleuté */
  --ink-2: #131b23;        /* panneaux */
  --ink-3: #18222c;        /* survol */
  --ink-4: #0a0f14;        /* pied de page */
  --line: #24313c;
  --line-hi: #33444f;
  --grid-fine: rgba(127, 157, 178, 0.055);
  --grid-strong: rgba(127, 157, 178, 0.13);
  --blue: #7f9db2;         /* bleu-gris technique (traits, tramage) */

  --accent: #d7d7d7;       /* RAL 7035 */
  --accent-hi: #f2f4f5;
  --accent-deep: #8a949b;
  --teal: var(--accent);
  --teal-hi: var(--accent-hi);
  --teal-deep: var(--accent-deep);

  --charcoal: var(--ink);
  --charcoal-2: var(--ink-2);
  --steel: #26333d;
  --steel-light: #3a4a56;

  --white: #eef3f6;
  --gray: #a7b6c0;
  --gray-dim: #6d7d89;

  --maxw: 1240px;
  --gut: clamp(1.1rem, 4vw, 2.4rem);
  --radius: 0px;
  --t: 0.3s cubic-bezier(0.2, 0.7, 0.2, 1);

  --display: "Oswald", "Arial Narrow", sans-serif;
  --body: "Barlow", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--body);
  color: var(--gray);
  line-height: 1.62;
  font-size: 1.02rem;
  overflow-x: hidden;
  counter-reset: sec fig;
  /* GRILLE APPARENTE — papier millimétré : 12 px fin, 96 px fort */
  background-color: var(--ink);
  background-image:
    linear-gradient(var(--grid-strong) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-strong) 1px, transparent 1px),
    linear-gradient(var(--grid-fine) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-fine) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px, 12px 12px, 12px 12px;
  background-position: 0 0;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
::selection { background: var(--accent); color: var(--ink); }

/* ---------- Typo ---------- */
.display, h1, h2, h3, .h {
  font-family: var(--display);
  color: var(--white);
  text-transform: uppercase;
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: 0.005em;
}
h1 { font-size: clamp(2.5rem, 8vw, 5.6rem); }
h2 { font-size: clamp(1.9rem, 5vw, 3.2rem); }
h3 { font-size: clamp(1.15rem, 2.2vw, 1.45rem); }

/* étiquette mono — la signature de la variante */
.eyebrow {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 500;
  font-size: 0.7rem;
  color: var(--accent-hi);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.eyebrow::before {
  content: "";
  width: 10px; height: 10px;
  border: 1px solid var(--accent);
  border-right-color: transparent;
  border-bottom-color: transparent;
  flex: none;
}
.lead { font-size: clamp(1.02rem, 1.5vw, 1.18rem); color: var(--gray); }
.text-teal { color: var(--accent-hi); }

/* ---------- Traits de construction (SVG inline) ---------- */
.cons { display: block; fill: none; stroke: var(--accent-deep); stroke-width: 1; }
.cons__faint { stroke: var(--blue); opacity: 0.55; }
.cons--tick { width: min(240px, 72%); height: 12px; margin: 0.85rem 0 1rem; opacity: 0.8; }
.section-head .cons--tick { margin-bottom: 0.2rem; }
.ctaband .cons--tick { margin-inline: auto; }
.cons--sheet { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; opacity: 0.55; pointer-events: none; }
.cons--dim { position: absolute; left: 10px; right: 10px; top: 8px; width: auto; height: 14px; z-index: 3; opacity: 0.9; }
.cons--rep { position: absolute; right: 12px; bottom: 12px; width: 30px; height: 30px; z-index: 3; stroke: var(--accent-hi); opacity: 0.85; }

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gut); }
.section { padding: clamp(3.6rem, 8vw, 6.6rem) 0; position: relative; }
[id] { scroll-margin-top: 6.5rem; }
.section--alt { background: rgba(19, 27, 35, 0.86); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 760px; margin-bottom: clamp(1.8rem, 4.5vw, 3rem); }
.section-head::before {
  counter-increment: sec;
  content: "§ " counter(sec, decimal-leading-zero);
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--gray-dim);
  margin-bottom: 0.7rem;
}
.section-head h2 { margin: 0.75rem 0 0.9rem; }
.cut-top { clip-path: none; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 500;
  font-size: 0.8rem;
  padding: 0.95rem 1.6rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--t);
  line-height: 1;
}
.btn--primary { background: var(--accent); color: var(--ink); border-color: var(--accent); }
.btn--primary:hover { background: var(--accent-hi); border-color: var(--accent-hi); box-shadow: 0 0 0 4px rgba(215, 215, 215, 0.12); }
.btn--ghost { background: transparent; color: var(--white); border-color: var(--line-hi); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent-hi); background: rgba(215, 215, 215, 0.06); }
.btn .arrow { transition: transform var(--t); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Header + bandeau documentaire ---------- */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: var(--t);
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  background: rgba(10, 15, 20, 0.94);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--line);
}
.docbar {
  display: none;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-dim);
  border-bottom: 1px solid rgba(127, 157, 178, 0.14);
  padding-top: 0.45rem;
  padding-bottom: 0.45rem;
}
@media (min-width: 1000px) { .docbar { display: flex; gap: 2.2rem; align-items: center; } }
.docbar__k { color: var(--accent); opacity: 0.75; }
.docbar__end { margin-left: auto; }
.header__inner { display: flex; align-items: center; justify-content: space-between; padding: 0.9rem 0; transition: var(--t); }
.header.scrolled .header__inner { padding: 0.55rem 0; }

.brand { display: inline-flex; align-items: center; gap: 0.75rem; color: var(--accent); }
.brand__mark { width: 40px; height: 40px; flex: none; fill: var(--accent); transition: var(--t); }
.brand__cons { fill: none; stroke: var(--accent); stroke-width: 0.7; opacity: 0.4; stroke-dasharray: 2 3.4; }
.brand:hover .brand__mark { fill: var(--accent-hi); }
.brand:hover .brand__cons { opacity: 0.9; stroke-dasharray: none; }
.brand__text { display: flex; flex-direction: column; line-height: 1; }
.brand__word {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.45rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.brand__sub {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.58rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--gray-dim);
  margin-top: 0.3rem;
  padding-left: 0.12em;
}
.brand--industrie .brand__sub { color: var(--ink); background: var(--accent); padding: 0.18rem 0.34rem; margin-left: -0.02rem; }
.header.scrolled .brand__mark { width: 34px; height: 34px; }
.brand--lg .brand__mark { width: 62px; height: 62px; }
.brand--lg .brand__word { font-size: 2.2rem; }
.brand--lg .brand__sub { font-size: 0.72rem; letter-spacing: 0.3em; }

.nav { display: flex; align-items: center; gap: 0.1rem; }
.nav a {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 400;
  font-size: 0.76rem;
  color: var(--gray);
  padding: 0.55rem 0.8rem;
  position: relative;
  transition: color var(--t);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0.8rem; right: 0.8rem; bottom: 0.15rem;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t);
}
.nav a:hover, .nav a.active { color: var(--white); }
.nav a:hover::after, .nav a.active::after { transform: scaleX(1); }
.nav a.active { color: var(--accent-hi); }
.nav .btn { margin-left: 0.9rem; padding: 0.65rem 1.1rem; }
.nav .btn--primary { color: var(--ink); }
.nav .btn--ghost { color: var(--white); }
.nav .btn::after { display: none; }

.burger {
  display: none;
  background: none;
  border: 1px solid var(--line-hi);
  border-radius: var(--radius);
  width: 46px; height: 42px;
  cursor: pointer;
  position: relative;
}
.burger span, .burger span::before, .burger span::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 20px; height: 1px;
  background: var(--white);
  transform: translate(-50%, -50%);
  transition: var(--t);
}
.burger span::before { top: -7px; }
.burger span::after { top: 7px; }
.burger.open span { background: transparent; }
.burger.open span::before { top: 0; transform: translate(-50%, -50%) rotate(45deg); }
.burger.open span::after { top: 0; transform: translate(-50%, -50%) rotate(-45deg); }

/* ---------- Hero — planche + cartouche ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 9.5rem 0 4.5rem;
  isolation: isolate;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background: url("/assets/dr2025.jpg") center 32% / cover no-repeat;
  /* traitement gris-bleu technique */
  filter: grayscale(1) sepia(0.35) hue-rotate(172deg) saturate(1.25) contrast(1.04) brightness(0.62);
}
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(100deg, rgba(11, 16, 21, 0.95) 0%, rgba(12, 18, 24, 0.86) 46%, rgba(20, 30, 38, 0.7) 100%),
    repeating-linear-gradient(0deg, rgba(127, 157, 178, 0.07) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, rgba(127, 157, 178, 0.07) 0 1px, transparent 1px 24px);
}
.hero__inner { position: relative; z-index: 1; display: grid; gap: clamp(2rem, 4vw, 3.4rem); align-items: end; }
@media (min-width: 1000px) { .hero__inner { grid-template-columns: 1.12fr 0.88fr; } }
.hero__main { max-width: 720px; }
.hero h1 { margin: 1rem 0 1.3rem; }
.hero h1 .accent { color: var(--accent); display: block; position: relative; }
.hero p { max-width: 560px; margin-bottom: 2rem; color: var(--white); opacity: 0.9; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.9rem; }

.hero__scroll {
  position: absolute;
  right: var(--gut); bottom: 2rem;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.64rem;
  color: var(--gray-dim);
  writing-mode: vertical-rl;
  display: flex; align-items: center; gap: 0.7rem;
  z-index: 2;
}
.hero__scroll::after { content: ""; width: 1px; height: 46px; background: linear-gradient(var(--accent), transparent); }

/* cartouche (title block) */
.cartouche {
  border: 1px solid var(--line-hi);
  background: rgba(10, 15, 20, 0.82);
  backdrop-filter: blur(3px);
  font-family: var(--mono);
  font-size: 0.76rem;
  max-width: 460px;
  width: 100%;
}
.cartouche__head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--line-hi);
  background: rgba(215, 215, 215, 0.06);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.66rem;
  color: var(--gray-dim);
}
.cartouche__brand {
  font-family: var(--display);
  font-size: 1.1rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  font-weight: 700;
}
.cartouche__rows > div {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 0.8rem;
  padding: 0.55rem 1rem;
  border-bottom: 1px dashed rgba(127, 157, 178, 0.22);
}
.cartouche__rows dt { color: var(--gray-dim); text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.62rem; padding-top: 0.15rem; }
.cartouche__rows dd { color: var(--white); }
.cartouche__foot {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding: 0.75rem 1rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.66rem;
}
.cartouche__foot a:hover { color: var(--accent-hi); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Hero intérieur ---------- */
.pagehero {
  position: relative;
  padding: clamp(9rem, 15vw, 12rem) 0 clamp(3rem, 6vw, 4.5rem);
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.pagehero__bg {
  position: absolute; inset: 0; z-index: -2;
  background-size: cover; background-position: center;
  filter: grayscale(1) sepia(0.35) hue-rotate(172deg) saturate(1.25) contrast(1.04) brightness(0.6);
}
.pagehero__overlay {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(100deg, rgba(11, 16, 21, 0.95) 25%, rgba(20, 30, 38, 0.72) 100%),
    repeating-linear-gradient(0deg, rgba(127, 157, 178, 0.06) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, rgba(127, 157, 178, 0.06) 0 1px, transparent 1px 24px);
}
.pagehero .wrap { position: relative; z-index: 1; }
.pagehero h1 { font-size: clamp(2.2rem, 6.5vw, 4.2rem); margin: 0.9rem 0 0.7rem; }
.pagehero p { max-width: 620px; color: var(--white); opacity: 0.9; }
.crumb { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gray-dim); }
.crumb a:hover { color: var(--accent-hi); }

/* ---------- Frise « chaîne numérique » (fil conducteur) ---------- */
.rail {
  position: relative;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 15, 20, 0.7);
}
.rail__inner { display: grid; gap: 1.1rem; padding-top: 1.15rem; padding-bottom: 1.15rem; }
@media (min-width: 980px) { .rail__inner { grid-template-columns: 210px 1fr; align-items: center; gap: 2.2rem; } }
.rail__title { display: flex; flex-direction: column; gap: 0.3rem; }
.rail__kicker { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--gray-dim); }
.rail__name { font-family: var(--display); text-transform: uppercase; color: var(--white); font-size: 0.95rem; letter-spacing: 0.05em; line-height: 1.15; }
.rail__steps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }
@media (min-width: 760px) { .rail__steps { grid-template-columns: repeat(4, 1fr); gap: 0; } }
.rail__step {
  position: relative;
  display: flex; flex-direction: column; gap: 0.16rem;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--line);
  background: rgba(19, 27, 35, 0.6);
  transition: var(--t);
}
@media (min-width: 760px) {
  .rail__step + .rail__step { border-left: 0; }
  .rail__step:not(:last-child)::after {
    content: "";
    position: absolute; right: -5px; top: 50%;
    width: 9px; height: 9px;
    border-top: 1px solid var(--accent-deep);
    border-right: 1px solid var(--accent-deep);
    transform: translateY(-50%) rotate(45deg);
    background: var(--ink);
    z-index: 2;
  }
}
.rail__n { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.2em; color: var(--gray-dim); }
.rail__k { font-family: var(--display); text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.98rem; color: var(--white); line-height: 1; }
.rail__d { font-family: var(--mono); font-size: 0.63rem; letter-spacing: 0.06em; color: var(--gray-dim); }
.rail__step.is-active { background: var(--accent); border-color: var(--accent); }
.rail__step.is-active .rail__n,
.rail__step.is-active .rail__d { color: rgba(14, 20, 26, 0.72); }
.rail__step.is-active .rail__k { color: var(--ink); }
.rail__step.is-active::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px; background: var(--ink);
}

/* ---------- Deux pôles — bandes de planche ---------- */
.poles { display: grid; gap: 0; border-top: 1px solid var(--line); }
.pole {
  position: relative;
  display: block;
  padding: clamp(1.6rem, 3.2vw, 2.6rem) clamp(0.8rem, 1.6vw, 1.4rem);
  margin-inline: clamp(-1.4rem, -1.6vw, -0.8rem);
  border-bottom: 1px solid var(--line);
  transition: var(--t);
}
.pole:hover { background: rgba(19, 27, 35, 0.75); }
.pole__ref {
  position: absolute; right: clamp(0.8rem, 1.6vw, 1.4rem); top: clamp(1.6rem, 3.2vw, 2.6rem);
  font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.24em;
  text-transform: uppercase; color: var(--gray-dim);
}
.pole__head { display: block; margin-bottom: 1.2rem; }
.pole .brand { pointer-events: none; }
.pole p { font-size: 0.98rem; margin: 0 0 0.9rem; }
.pole ul { display: grid; gap: 0.35rem; font-size: 0.9rem; font-family: var(--mono); margin-bottom: 1.2rem; }
.pole li { display: flex; gap: 0.6rem; }
.pole li::before { content: "—"; color: var(--accent); flex: none; }
.pole .btn { display: inline-flex; }
@media (min-width: 900px) {
  .pole {
    display: grid;
    grid-template-columns: minmax(0, 300px) 1fr;
    column-gap: clamp(2rem, 4vw, 3.6rem);
    row-gap: 0.9rem;
    align-items: start;
  }
  .pole__head { grid-column: 1; grid-row: 1 / span 3; margin: 0; padding-right: 1.6rem; border-right: 1px dashed rgba(127, 157, 178, 0.28); align-self: stretch; }
  .pole > p { grid-column: 2; grid-row: 1; margin-bottom: 0; padding-right: 6.5rem; }
  .pole > ul { grid-column: 2; grid-row: 2; margin-bottom: 0; }
  .pole > .btn { grid-column: 2; grid-row: 3; justify-self: start; }
}

/* ---------- Split / images ---------- */
.split { display: grid; grid-template-columns: 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
@media (min-width: 920px) { .split { grid-template-columns: 1.05fr 0.95fr; } .split--rev > :first-child { order: 2; } }
.media-frame {
  position: relative;
  border: 1px solid var(--line-hi);
  padding: 28px 10px 10px;
  background:
    linear-gradient(rgba(127, 157, 178, 0.05) 1px, transparent 1px) 0 0 / 12px 12px,
    var(--ink-2);
  counter-increment: fig;
}
.media-frame img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(1) sepia(0.35) hue-rotate(172deg) saturate(1.2) contrast(1.06) brightness(0.9);
  transition: filter var(--t);
}
.media-frame:hover img { filter: grayscale(0.55) sepia(0.15) hue-rotate(172deg) saturate(1.05) contrast(1.04) brightness(0.96); }
.media-frame__tag {
  position: absolute; left: 10px; bottom: 10px; z-index: 3;
  background: var(--accent);
  color: var(--ink);
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 500;
  font-size: 0.64rem;
  padding: 0.45rem 0.8rem;
}
.media-frame__tag::before { content: "Fig. " counter(fig, decimal-leading-zero) " — "; opacity: 0.6; }

.feature-list { margin-top: 1.6rem; display: grid; gap: 0.9rem; }
.feature-list li { display: flex; gap: 0.9rem; align-items: flex-start; padding-left: 0.9rem; border-left: 1px solid var(--line); }
.feature-list .mark { color: var(--accent); font-family: var(--mono); font-weight: 500; font-size: 0.8rem; flex: none; margin-top: 0.22rem; letter-spacing: 0.1em; }
.feature-list strong { color: var(--white); font-family: var(--display); text-transform: uppercase; letter-spacing: 0.04em; display: block; font-weight: 600; }

/* ---------- Métiers ---------- */
.metiers { display: grid; gap: 1px; grid-template-columns: repeat(1, 1fr); }
@media (min-width: 560px) { .metiers { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 920px) { .metiers { grid-template-columns: repeat(3, 1fr); } }
.tile {
  position: relative;
  background: rgba(19, 27, 35, 0.9);
  border: 0;
  box-shadow: 0 0 0 1px var(--line);
  border-radius: var(--radius);
  padding: 1.8rem 1.5rem 1.6rem;
  overflow: hidden;
  transition: var(--t);
  display: flex;
  flex-direction: column;
  min-height: 226px;
}
.tile::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t);
}
/* croix de construction révélée au survol */
.tile::after {
  content: "";
  position: absolute; right: 1.3rem; bottom: 1.2rem;
  width: 26px; height: 26px;
  background:
    linear-gradient(var(--accent), var(--accent)) center / 1px 100% no-repeat,
    linear-gradient(var(--accent), var(--accent)) center / 100% 1px no-repeat;
  opacity: 0;
  transition: opacity var(--t), transform var(--t);
  transform: rotate(-45deg) scale(0.6);
}
.tile:hover { background: var(--ink-3); }
.tile:hover::before { transform: scaleX(1); }
.tile:hover::after { opacity: 0.7; transform: rotate(0) scale(1); }
.tile__icon {
  width: 50px; height: 50px;
  margin-bottom: 1rem;
  filter: brightness(0) invert(1) opacity(0.7);
  transition: var(--t);
}
.tile:hover .tile__icon { filter: brightness(0) invert(1); transform: translateY(-2px); }
.tile h3 { margin-bottom: 0.5rem; }
.tile p { font-size: 0.92rem; }
.tile .num {
  position: absolute; right: 1.2rem; top: 1rem;
  font-family: var(--mono); font-weight: 500;
  font-size: 0.72rem; letter-spacing: 0.2em; color: var(--gray-dim);
  transition: color var(--t);
}
.tile:hover .num { color: var(--accent); }

/* ---------- Relevé (stats) ---------- */
.stats {
  background:
    linear-gradient(rgba(10, 15, 20, 0.9), rgba(10, 15, 20, 0.94)),
    url("/assets/derice0561.png") center / cover fixed no-repeat;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: clamp(2.6rem, 6vw, 4.4rem) 0;
}
.stats__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.6rem 0; }
@media (min-width: 800px) { .stats__grid { grid-template-columns: repeat(4, 1fr); } }
.stat { text-align: center; position: relative; padding: 0 1rem; }
.stat + .stat { border-left: 1px dashed rgba(127, 157, 178, 0.25); }
@media (max-width: 799px) { .stat:nth-child(3) { border-left: 0; } }
.stat__num { font-family: var(--display); font-weight: 700; font-size: clamp(2.4rem, 5.5vw, 3.6rem); color: var(--white); line-height: 1; }
.stat__num .text-teal { color: var(--accent); }
.stat__label { font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.63rem; color: var(--gray-dim); margin-top: 0.7rem; }
.stat::after {
  content: "";
  display: block; width: 26px; height: 1px; margin: 0.9rem auto 0;
  background: var(--accent); opacity: 0.5;
}

/* ---------- Bandeau image ---------- */
.bandblock {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--line-hi);
  min-height: 360px;
  display: flex;
  align-items: flex-end;
  padding: clamp(1.6rem, 4vw, 3rem);
}
.bandblock__bg {
  position: absolute; inset: 0; z-index: -2; background-size: cover; background-position: center;
  filter: grayscale(1) sepia(0.35) hue-rotate(172deg) saturate(1.2) contrast(1.05) brightness(0.62);
}
.bandblock__overlay {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg, rgba(11, 16, 21, 0.94) 10%, rgba(20, 30, 38, 0.62) 100%),
    repeating-linear-gradient(90deg, rgba(127, 157, 178, 0.07) 0 1px, transparent 1px 24px);
}
.bandblock::before,
.bandblock::after {
  content: "";
  position: absolute; width: 26px; height: 26px; z-index: 1; pointer-events: none;
  border: 1px solid var(--accent); opacity: 0.7;
}
.bandblock::before { left: 12px; top: 12px; border-right: 0; border-bottom: 0; }
.bandblock::after { right: 12px; bottom: 12px; border-left: 0; border-top: 0; }
.bandblock__inner { max-width: 560px; position: relative; z-index: 1; }

/* ---------- Galerie ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 0; margin-bottom: 2.2rem; border: 1px solid var(--line); width: fit-content; }
.filters button {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--gray);
  background: transparent;
  border: 0;
  border-right: 1px solid var(--line);
  padding: 0.6rem 1.05rem;
  cursor: pointer;
  transition: var(--t);
}
.filters button:last-child { border-right: 0; }
.filters button:hover { color: var(--white); background: rgba(215, 215, 215, 0.07); }
.filters button.active { background: var(--accent); color: var(--ink); }

.gallery { display: grid; gap: 1rem; grid-template-columns: repeat(1, 1fr); }
@media (min-width: 600px) { .gallery { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .gallery { grid-template-columns: repeat(3, 1fr); } }
.card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  min-height: 280px;
  display: flex;
  align-items: flex-end;
  isolation: isolate;
  transition: var(--t);
}
.card.big { min-height: 360px; }
@media (min-width: 600px) { .card.big { grid-column: span 2; } }
.card__bg {
  position: absolute; inset: 0; z-index: -2;
  background-size: cover; background-position: center;
  transition: transform 0.6s ease, filter var(--t);
}
.card.photo .card__bg { filter: grayscale(1) sepia(0.35) hue-rotate(172deg) saturate(1.2) contrast(1.06) brightness(0.78); }
.card.photo:hover .card__bg { filter: grayscale(0.5) sepia(0.15) hue-rotate(172deg) saturate(1.05) contrast(1.04) brightness(0.9); }
.card.tealtile .card__bg {
  background:
    repeating-linear-gradient(45deg, rgba(127, 157, 178, 0.08) 0 1px, transparent 1px 9px),
    linear-gradient(150deg, var(--steel) 0%, var(--ink-2) 100%);
}
.card__overlay {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(0deg, rgba(10, 14, 18, 0.95) 5%, rgba(10, 14, 18, 0.2) 68%, rgba(127, 157, 178, 0.12) 100%);
  transition: var(--t);
}
.card::before {
  content: "";
  position: absolute; left: 10px; top: 10px;
  width: 22px; height: 22px;
  border-left: 1px solid var(--accent); border-top: 1px solid var(--accent);
  opacity: 0; transition: opacity var(--t); z-index: 2;
}
.card:hover { border-color: var(--accent-deep); }
.card:hover::before { opacity: 0.85; }
.card:hover .card__bg { transform: scale(1.05); }
.card__body { padding: 1.3rem; width: 100%; position: relative; z-index: 1; }
.card__cat { font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.2em; font-size: 0.63rem; color: var(--accent); }
.card__title { font-family: var(--display); text-transform: uppercase; color: var(--white); font-weight: 700; font-size: 1.25rem; line-height: 1.05; margin-top: 0.35rem; }
.card__icon { position: absolute; right: 1.1rem; top: 1.1rem; width: 38px; height: 38px; filter: brightness(0) invert(1) opacity(0.55); z-index: 1; transition: var(--t); }
.card:hover .card__icon { opacity: 1; }
.is-hidden { display: none; }

/* ---------- Étapes / méthode ---------- */
.steps { display: grid; gap: 1px; grid-template-columns: 1fr; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step {
  background: rgba(19, 27, 35, 0.9);
  padding: 2rem 1.6rem;
  position: relative;
  transition: var(--t);
}
.step:hover { background: var(--ink-3); }
.step__n { font-family: var(--mono); font-weight: 500; font-size: 0.72rem; letter-spacing: 0.28em; color: var(--accent); line-height: 1; }
.step h3 { margin: 0.9rem 0 0.5rem; }
.step::after {
  content: "";
  position: absolute; left: 0; top: 0; width: 34px; height: 2px; background: var(--accent);
}

/* ---------- Postes ---------- */
.jobs { display: grid; gap: 1px; grid-template-columns: 1fr; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 720px) { .jobs { grid-template-columns: repeat(2, 1fr); } }
.job {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  background: rgba(19, 27, 35, 0.9);
  padding: 1.25rem 1.4rem;
  transition: var(--t);
}
.job:hover { background: var(--ink-3); }
.job h3 { font-size: 1.08rem; }
.job span { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gray-dim); }
.job .chev { font-family: var(--body); color: var(--accent); font-size: 1.25rem; transition: transform var(--t); }
.job:hover .chev { transform: translateX(5px); }

/* ---------- Contact / formulaires ---------- */
.contact-grid { display: grid; gap: clamp(2rem, 5vw, 3.5rem); grid-template-columns: 1fr; }
@media (min-width: 940px) { .contact-grid { grid-template-columns: 1.1fr 0.9fr; } }
.form {
  background: rgba(19, 27, 35, 0.86);
  border: 1px solid var(--line-hi);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.4rem);
  position: relative;
}
.form::before {
  content: "";
  position: absolute; left: 8px; top: 8px; right: 8px; bottom: 8px;
  border: 1px dashed rgba(127, 157, 178, 0.16);
  pointer-events: none;
}
.field { margin-bottom: 1.15rem; position: relative; }
.field label {
  display: block;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.66rem;
  color: var(--gray-dim);
  margin-bottom: 0.45rem;
}
.field label .req { color: var(--accent); }
.field input, .field select, .field textarea {
  width: 100%;
  background: rgba(10, 15, 20, 0.85);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--body);
  font-size: 1rem;
  padding: 0.8rem 0.95rem;
  transition: var(--t);
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(215, 215, 215, 0.14);
}
.field input::placeholder, .field textarea::placeholder { color: var(--gray-dim); }
.form-row { display: grid; gap: 1.15rem; grid-template-columns: 1fr; }
@media (min-width: 560px) { .form-row { grid-template-columns: 1fr 1fr; } }
.form .btn { width: 100%; justify-content: center; margin-top: 0.4rem; }

.form-success {
  display: none;
  align-items: center;
  gap: 0.9rem;
  background: rgba(215, 215, 215, 0.1);
  border: 1px solid var(--accent-deep);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  color: var(--white);
  margin-bottom: 1.3rem;
}
.form-success.show { display: flex; animation: pop 0.4s ease; }
.form-success .dot { width: 32px; height: 32px; flex: none; background: var(--accent); color: var(--ink); display: grid; place-items: center; font-weight: 700; }
@keyframes pop { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

.form-error {
  display: none;
  align-items: center;
  gap: 0.9rem;
  background: rgba(214, 90, 60, 0.14);
  border: 1px solid #a8452c;
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  color: var(--white);
  margin-bottom: 1.3rem;
}
.form-error.show { display: flex; animation: pop 0.4s ease; }
.form-error .dot { width: 32px; height: 32px; flex: none; background: #d65a3c; color: #1b0703; display: grid; place-items: center; font-weight: 700; }

/* Pot de miel anti-robots : invisible pour l'humain, présent pour les bots */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
button[disabled] { opacity: 0.6; cursor: progress; }

.info-block { display: grid; gap: 0; border-top: 1px solid var(--line); }
.info-item { display: flex; gap: 1rem; align-items: flex-start; padding: 1.15rem 0; border-bottom: 1px solid var(--line); }
.info-item .ico {
  width: 40px; height: 40px; flex: none;
  background: transparent; color: var(--accent);
  display: grid; place-items: center; font-size: 1.1rem;
  border: 1px solid var(--line-hi);
}
.info-item h3 { font-size: 0.95rem; margin-bottom: 0.25rem; }
.info-item p { font-size: 0.94rem; }
.info-item a:hover { color: var(--accent-hi); }
.map-frame { margin-top: 1.4rem; border: 1px solid var(--line-hi); padding: 8px; background: var(--ink-2); }
.map-frame iframe { width: 100%; height: 260px; border: 0; display: block; filter: grayscale(1) contrast(1.15) brightness(0.78) sepia(0.25) hue-rotate(172deg); }

/* ---------- Bandeau QUALIBAT ---------- */
.qualibat {
  display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap;
  background: rgba(19, 27, 35, 0.86);
  border: 1px solid var(--line-hi);
  border-left: 3px solid var(--accent);
  padding: 1.5rem 1.8rem;
}
.qualibat img { background: var(--white); padding: 0.5rem 0.7rem; height: 60px; width: auto; }
.qualibat p { margin: 0; }

/* ---------- Bande CTA ---------- */
.ctaband {
  text-align: center;
  background:
    repeating-linear-gradient(135deg, rgba(127, 157, 178, 0.05) 0 1px, transparent 1px 10px),
    linear-gradient(180deg, rgba(19, 27, 35, 0.95), rgba(10, 15, 20, 0.95));
  border-top: 1px solid var(--accent-deep);
  border-bottom: 1px solid var(--line);
}
.ctaband .eyebrow { justify-content: center; }
.ctaband h2 { margin-bottom: 1rem; }
.ctaband .hero__cta { justify-content: center; }
.ctaband p { max-width: 620px; margin: 0 auto 2rem; color: var(--white); opacity: 0.9; }

/* ---------- Certifications ---------- */
.certs { display: grid; gap: 1px; grid-template-columns: 1fr; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 760px) { .certs { grid-template-columns: 1fr 1fr; } }
.cert { background: rgba(19, 27, 35, 0.9); padding: 1.8rem 1.7rem; }
.cert__badge {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 64px; height: 62px; padding: 0 0.9rem; margin-bottom: 1rem;
  background: var(--white); color: var(--ink);
  font-family: var(--mono); font-weight: 600; letter-spacing: 0.08em; font-size: 0.95rem;
}
.cert__badge img { height: 42px; width: auto; }
.cert h3 { margin-bottom: 0.5rem; }
.cert p + p { margin-top: 0.7rem; }
.cert ul { margin-top: 0.9rem; display: grid; gap: 0.4rem; font-size: 0.92rem; }
.cert li { display: flex; gap: 0.6rem; }
.cert li::before { content: "—"; color: var(--accent); flex: none; }

/* ---------- Spécifications (industrie) ---------- */
.specs { display: grid; gap: 1px; grid-template-columns: 1fr; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 640px) { .specs { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .specs { grid-template-columns: repeat(3, 1fr); } }
.spec { background: rgba(19, 27, 35, 0.9); padding: 1.6rem 1.5rem; transition: var(--t); position: relative; }
.spec:hover { background: var(--ink-3); }
.spec__k {
  font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.2em;
  font-size: 0.63rem; color: var(--ink); background: var(--accent);
  padding: 0.2rem 0.5rem; display: inline-block;
}
.spec h3 { margin: 0.8rem 0 0.5rem; font-size: 1.2rem; }
.spec p { font-size: 0.92rem; }

/* ---------- Chaîne numérique (page industrie) ---------- */
.chain { display: grid; gap: 0.9rem; grid-template-columns: 1fr; counter-reset: chain; }
@media (min-width: 760px) { .chain { grid-template-columns: repeat(4, 1fr); } }
.chain__step {
  position: relative;
  background: rgba(19, 27, 35, 0.9);
  border: 1px solid var(--line);
  border-top: 2px solid var(--accent);
  padding: 1.4rem 1.25rem 1.3rem;
}
.chain__step::before {
  counter-increment: chain;
  content: "0" counter(chain);
  display: block; margin-bottom: 0.7rem;
  font-family: var(--mono); font-weight: 500; font-size: 0.72rem; letter-spacing: 0.28em;
  color: var(--accent);
}
@media (min-width: 760px) {
  .chain__step:not(:last-child)::after {
    content: "";
    position: absolute; right: -0.62rem; top: 50%;
    width: 8px; height: 8px;
    border-top: 1px solid var(--accent-deep);
    border-right: 1px solid var(--accent-deep);
    transform: translateY(-50%) rotate(45deg);
  }
}
.chain__step h3 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.chain__step p { font-size: 0.88rem; }

/* ---------- Footer ---------- */
.footer {
  background: var(--ink-4);
  border-top: 1px solid var(--line);
  padding-top: clamp(2.8rem, 6vw, 4.2rem);
}
.footer__grid { display: grid; gap: 2.4rem; grid-template-columns: 1fr; }
@media (min-width: 720px) { .footer__grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.footer h4 { font-family: var(--mono); text-transform: uppercase; color: var(--gray-dim); letter-spacing: 0.2em; font-size: 0.66rem; font-weight: 500; margin-bottom: 1.1rem; padding-bottom: 0.6rem; border-bottom: 1px solid var(--line); }
.footer p, .footer a, .footer li { font-size: 0.93rem; color: var(--gray); }
.footer a:hover { color: var(--accent-hi); }
.footer__brand .brand { margin-bottom: 1.1rem; }
.footer ul { display: grid; gap: 0.5rem; }
.footer__bottom {
  margin-top: 2.6rem; padding: 1.2rem 0; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 0.6rem 1.2rem; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gray-dim);
}
.footer__bottom a:hover { color: var(--accent-hi); }
.tag-qualibat { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--accent); font-family: var(--mono); letter-spacing: 0.16em; text-transform: uppercase; font-size: 0.68rem; }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* ---------- Nav mobile ---------- */
@media (max-width: 900px) {
  .burger { display: inline-flex; }
  .nav {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(82vw, 340px);
    background: var(--ink-2);
    border-left: 1px solid var(--line-hi);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0.2rem;
    padding: 5.5rem 1.5rem 2rem;
    transform: translateX(100%);
    transition: transform var(--t);
    z-index: 90;
    background-image:
      linear-gradient(var(--grid-fine) 1px, transparent 1px),
      linear-gradient(90deg, var(--grid-fine) 1px, transparent 1px);
    background-size: 12px 12px;
  }
  .nav.open { transform: translateX(0); box-shadow: -30px 0 60px -20px #000; }
  .nav a { padding: 0.85rem 0.3rem; font-size: 0.9rem; border-bottom: 1px solid var(--line); }
  .nav a::after { display: none; }
  .nav .btn { margin: 0.9rem 0 0; justify-content: center; }
  .nav-backdrop { position: fixed; inset: 0; background: rgba(6, 10, 13, 0.68); z-index: 80; opacity: 0; pointer-events: none; transition: opacity var(--t); }
  .nav-backdrop.show { opacity: 1; pointer-events: auto; }
}
@media (max-width: 640px) {
  .cons--sheet { opacity: 0.35; }
  .hero { padding-top: 8rem; }
}

/* ---------- Mentions légales ---------- */
.legal { max-width: 820px; }
.legal h2 {
  font-size: 1.2rem; margin: 2.4rem 0 0.8rem; color: var(--white);
  padding-left: 0.9rem; border-left: 2px solid var(--accent);
}
.legal h2::before {
  content: "§ ";
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.2em; color: var(--gray-dim);
}
.legal h2:first-child { margin-top: 0; }
.legal p { color: var(--gray); line-height: 1.75; margin-bottom: 1rem; }
.legal a { color: var(--accent-hi); text-decoration: underline; text-underline-offset: 3px; }
.legal .todo { color: #d6a13c; font-style: italic; }