/* ===================================================================
   CONSTRUCTYS — refonte premium
   Palette navy de marque + accent « blueprint » cyan
   =================================================================== */

:root {
  /* Marque */
  --navy-950: #06121f;
  --navy-900: #0a1b30;
  --navy-800: #0f2b50; /* brand */
  --navy-700: #14396b; /* brand */
  --blue-500: #2e86c8; /* accent */
  --blue-400: #5bb0e8;
  --blueprint: #7fd0ff;

  /* Neutres */
  --paper: #ffffff;
  --cloud: #f4f7fb;
  --concrete: #e7ecf3;
  --steel: #6b7a90;
  --ink: #0b1626;

  /* Signal */
  --amber: #e9a23d;

  --maxw: 1240px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 16px;
  --radius-lg: 26px;

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--navy-950);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
:focus-visible { outline: 2px solid var(--blue-400); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--blue-500); color: #fff; }

.skip-link {
  position: fixed; top: -100px; left: 16px; z-index: 2000;
  background: var(--paper); color: var(--navy-800);
  padding: 10px 16px; border-radius: 8px; font-weight: 600;
  transition: top .2s;
}
.skip-link:focus { top: 16px; }

/* ---------- Préchargeur ---------- */
.preloader {
  position: fixed; inset: 0; z-index: 3000;
  display: grid; place-content: center; gap: 22px; justify-items: center;
  background: var(--navy-950);
  transition: opacity .6s var(--ease), visibility .6s;
}
.preloader__mark { display: flex; gap: 8px; align-items: flex-end; height: 54px; }
.preloader__bar {
  width: 12px; background: linear-gradient(var(--blue-400), var(--blue-500));
  border-radius: 3px; transform-origin: bottom;
  animation: build 1.1s var(--ease) infinite;
}
.preloader__bar:nth-child(1) { height: 28px; animation-delay: 0s; }
.preloader__bar:nth-child(2) { height: 54px; animation-delay: .15s; }
.preloader__bar:nth-child(3) { height: 38px; animation-delay: .3s; }
@keyframes build { 0%,100% { transform: scaleY(.35); opacity: .5; } 50% { transform: scaleY(1); opacity: 1; } }
.preloader__label {
  font-family: var(--font-display); letter-spacing: .35em; font-weight: 600;
  color: #fff; font-size: 14px; padding-left: .35em;
}
body:not(.is-loading) .preloader { opacity: 0; visibility: hidden; }

/* ---------- Boutons ---------- */
.btn {
  --pad-y: 13px; --pad-x: 24px;
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: var(--pad-y) var(--pad-x);
  font-family: var(--font-display); font-weight: 600; font-size: 15px;
  letter-spacing: .01em; border-radius: 100px;
  transition: transform .35s var(--ease), background .3s, color .3s, box-shadow .3s, border-color .3s;
  will-change: transform;
}
.btn svg { width: 17px; height: 17px; fill: currentColor; }
.btn--lg { --pad-y: 17px; --pad-x: 34px; font-size: 16px; }

.btn--solid {
  background: var(--blue-500); color: #fff;
  box-shadow: 0 10px 30px -10px rgba(46, 134, 200, .7);
}
.btn--solid:hover { background: var(--blue-400); transform: translateY(-2px); box-shadow: 0 16px 40px -12px rgba(46, 134, 200, .85); }

.btn--line { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.32); }
.btn--line:hover { border-color: #fff; background: rgba(255,255,255,.08); transform: translateY(-2px); }

.btn--ghost { background: transparent; color: var(--navy-800); }
.btn--phone svg { fill: var(--blue-500); }

/* ---------- Layout helpers ---------- */
.section-eyebrow {
  font-family: var(--font-display); font-weight: 600; font-size: 13px;
  letter-spacing: .22em; text-transform: uppercase; color: var(--blue-500);
  display: inline-flex; align-items: center; gap: 12px; margin-bottom: 18px;
}
.section-eyebrow::before { content: ""; width: 34px; height: 2px; background: var(--blue-500); display: inline-block; }
.section-title {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.05; letter-spacing: -.02em;
}
.section-title em { font-style: normal; color: var(--blue-500); }

/* =================================================================
   TOPBAR + HEADER
   ================================================================= */
.topbar {
  background: var(--navy-950); color: rgba(255,255,255,.7);
  font-size: 13px; border-bottom: 1px solid rgba(255,255,255,.06);
  position: relative; z-index: 60;
}
.topbar__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 9px var(--gutter);
  display: flex; gap: 28px; flex-wrap: wrap; justify-content: flex-end;
}
.topbar__item { display: inline-flex; align-items: center; gap: 7px; transition: color .2s; }
.topbar__item:hover { color: #fff; }
.topbar__item svg { width: 14px; height: 14px; fill: var(--blue-400); }
.topbar__item:first-child { margin-right: auto; }

.header {
  position: sticky; top: 0; z-index: 100;
  transition: background .4s var(--ease), box-shadow .4s, padding .4s;
}
.header__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 18px var(--gutter);
  display: flex; align-items: center; gap: 28px;
}
.header.scrolled {
  background: rgba(8, 22, 38, .82);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(255,255,255,.07);
}
.header.scrolled .header__inner { padding-top: 12px; padding-bottom: 12px; }

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand__mark { width: 38px; height: 38px; object-fit: contain; }
.brand__name {
  font-family: var(--font-display); font-weight: 600; color: #fff;
  letter-spacing: .14em; font-size: 19px;
}

.nav { display: flex; gap: 32px; margin-left: auto; }
.nav a {
  color: rgba(255,255,255,.78); font-size: 15px; font-weight: 500;
  position: relative; padding: 4px 0; transition: color .2s;
}
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 0;
  background: var(--blue-400); transition: width .3s var(--ease);
}
.nav a:hover { color: #fff; }
.nav a:hover::after { width: 100%; }

.header__cta { display: flex; align-items: center; gap: 14px; }
.header__cta .btn--phone { color: rgba(255,255,255,.85); padding: 10px 12px; }
.header__cta .btn--phone:hover { color: #fff; }

/* Burger */
.burger { display: none; width: 44px; height: 44px; flex-direction: column; gap: 5px; align-items: center; justify-content: center; }
.burger span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: transform .3s, opacity .3s; }
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Menu mobile */
.mobile-menu {
  position: fixed; inset: 0; z-index: 90;
  background: var(--navy-950); padding: 120px var(--gutter) 40px;
  display: flex; flex-direction: column; justify-content: space-between;
  transform: translateX(100%); transition: transform .5s var(--ease);
  visibility: hidden;
}
.mobile-menu.open { transform: translateX(0); visibility: visible; }
.mobile-menu nav { display: flex; flex-direction: column; gap: 6px; }
.mobile-menu nav a {
  font-family: var(--font-display); font-size: 30px; font-weight: 600; color: #fff;
  padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.08);
}
.mobile-menu__foot { display: flex; flex-direction: column; gap: 18px; }
.mobile-menu__foot .btn { width: 100%; }
.mobile-menu__tel { color: var(--blue-400); font-family: var(--font-display); font-size: 20px; text-align: center; }

/* =================================================================
   HERO
   ================================================================= */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center;
  background: radial-gradient(120% 90% at 70% 10%, var(--navy-800), var(--navy-950) 70%);
  overflow: hidden; isolation: isolate;
  margin-top: -76px; padding-top: 76px;
}
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; }

/* Repli */
.hero__fallback { position: absolute; inset: 0; z-index: 0; opacity: 0; }
.hero__fallback img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .22; }
.hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(127,208,255,.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127,208,255,.10) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(80% 70% at 60% 40%, #000, transparent 80%);
}
body.no-3d .hero__fallback { opacity: 1; }
body.no-3d .hero__canvas { display: none; }

.hero__veil {
  position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background:
    linear-gradient(90deg, rgba(6,18,31,.92) 0%, rgba(6,18,31,.55) 38%, rgba(6,18,31,0) 62%),
    linear-gradient(0deg, var(--navy-950) 2%, transparent 28%);
}

.hero__content {
  position: relative; z-index: 3;
  max-width: var(--maxw); width: 100%; margin: 0 auto; padding: 0 var(--gutter);
}
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 11px;
  font-family: var(--font-display); font-size: 13px; font-weight: 500;
  letter-spacing: .16em; text-transform: uppercase; color: var(--blue-400);
  margin-bottom: 26px;
}
.hero__eyebrow span {
  width: 8px; height: 8px; border-radius: 50%; background: var(--blue-400);
  box-shadow: 0 0 0 0 rgba(91,176,232,.6); animation: ping 2.4s infinite;
}
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgba(91,176,232,.5);} 70%{ box-shadow: 0 0 0 12px rgba(91,176,232,0);} 100%{ box-shadow: 0 0 0 0 rgba(91,176,232,0);} }

.hero__title {
  font-family: var(--font-display); font-weight: 600; color: #fff;
  font-size: clamp(2.5rem, 7.2vw, 5.6rem); line-height: 1.0; letter-spacing: -.03em;
  max-width: 16ch;
}
.hero__title em { font-style: normal; color: var(--blue-400); }
.hero__title .line { display: block; overflow: hidden; }
.hero__title .line > span { display: block; will-change: transform; }

.hero__lead {
  color: rgba(255,255,255,.78); font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  max-width: 50ch; margin: 28px 0 38px;
}
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero__scroll {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  z-index: 3; display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: rgba(255,255,255,.5); font-size: 11px; letter-spacing: .2em; text-transform: uppercase;
}
.hero__scroll-line { width: 1px; height: 46px; background: linear-gradient(rgba(255,255,255,.5), transparent); position: relative; overflow: hidden; }
.hero__scroll-line::after { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 40%; background: var(--blue-400); animation: scrolldot 2s var(--ease) infinite; }
@keyframes scrolldot { 0% { transform: translateY(-100%);} 100% { transform: translateY(250%);} }

/* =================================================================
   PILIERS
   ================================================================= */
.pillars { background: var(--navy-900); position: relative; z-index: 4; }
.pillars__inner {
  max-width: var(--maxw); margin: 0 auto; padding: clamp(40px, 6vw, 72px) var(--gutter);
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.pillar {
  padding: 30px; border: 1px solid rgba(255,255,255,.09); border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(255,255,255,.04), rgba(255,255,255,0));
  transition: transform .4s var(--ease), border-color .4s, background .4s;
}
.pillar:hover { transform: translateY(-6px); border-color: rgba(91,176,232,.4); background: linear-gradient(160deg, rgba(46,134,200,.12), rgba(255,255,255,0)); }
.pillar svg { width: 34px; height: 34px; fill: var(--blue-400); margin-bottom: 18px; }
.pillar h3 { font-family: var(--font-display); color: #fff; font-size: 1.25rem; font-weight: 600; margin-bottom: 8px; }
.pillar p { color: rgba(255,255,255,.62); font-size: .98rem; }

/* =================================================================
   ENTREPRISE
   ================================================================= */
.about {
  background: var(--cloud); color: var(--ink);
  max-width: 100%; padding: clamp(70px, 10vw, 130px) var(--gutter);
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 90px);
  align-items: center;
}
.about > * { max-width: 600px; }
.about__media { position: relative; justify-self: end; width: 100%; }
.about__media img { width: 100%; border-radius: var(--radius-lg); aspect-ratio: 4/5; object-fit: cover; box-shadow: 0 40px 80px -30px rgba(15,43,80,.5); }
.about__badge {
  position: absolute; bottom: -26px; left: -26px;
  background: var(--navy-800); color: #fff; border-radius: var(--radius);
  padding: 20px 26px; display: flex; align-items: center; gap: 14px;
  box-shadow: 0 24px 50px -18px rgba(15,43,80,.6);
}
.about__badge strong { font-family: var(--font-display); font-size: 2.2rem; color: var(--blue-400); line-height: 1; }
.about__badge span { font-size: .82rem; line-height: 1.3; color: rgba(255,255,255,.8); }

.about__lead { color: var(--steel); font-size: 1.1rem; margin: 22px 0 28px; }
.about__list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 34px; }
.about__list li { display: flex; align-items: center; gap: 12px; font-weight: 500; color: var(--navy-800); }
.about__list svg { width: 22px; height: 22px; fill: #fff; background: var(--blue-500); border-radius: 50%; padding: 4px; flex: none; }

/* =================================================================
   PRESTATIONS
   ================================================================= */
.services { background: var(--paper); padding: clamp(70px, 10vw, 130px) var(--gutter); }
.services__head, .method__head, .refs__head { max-width: var(--maxw); margin: 0 auto clamp(40px, 6vw, 64px); }
.services__grid {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.service {
  position: relative; padding: 30px; border-radius: var(--radius-lg);
  background: var(--cloud); border: 1px solid var(--concrete);
  overflow: hidden; transition: transform .45s var(--ease), box-shadow .45s, border-color .45s;
}
.service:hover { transform: translateY(-8px); box-shadow: 0 36px 70px -30px rgba(15,43,80,.35); border-color: transparent; }
.service__num {
  font-family: var(--font-display); font-size: 1rem; font-weight: 600;
  color: var(--blue-500); letter-spacing: .1em;
}
.service__img { margin: 18px 0 22px; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16/11; }
.service__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.service:hover .service__img img { transform: scale(1.07); }
.service h3 { font-family: var(--font-display); font-size: 1.4rem; font-weight: 600; color: var(--navy-800); margin-bottom: 10px; }
.service p { color: var(--steel); font-size: .98rem; }

/* =================================================================
   MÉTHODE
   ================================================================= */
.method { background: var(--navy-900); color: #fff; padding: clamp(70px, 10vw, 130px) var(--gutter); position: relative; overflow: hidden; }
.method::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(127,208,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(127,208,255,.05) 1px, transparent 1px);
  background-size: 60px 60px; mask-image: radial-gradient(100% 60% at 50% 0%, #000, transparent 75%);
}
.method__head { position: relative; }
.method__head .section-title { color: #fff; }
.method__intro { color: rgba(255,255,255,.65); margin-top: 16px; max-width: 50ch; }
.steps {
  position: relative; max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.step { position: relative; padding-top: 34px; border-top: 1px solid rgba(255,255,255,.16); }
.step::before {
  content: ""; position: absolute; top: -5px; left: 0; width: 10px; height: 10px;
  border-radius: 50%; background: var(--blue-400); box-shadow: 0 0 16px var(--blue-400);
}
.step__index { font-family: var(--font-display); font-size: 2.6rem; font-weight: 600; color: rgba(255,255,255,.16); display: block; line-height: 1; margin-bottom: 14px; }
.step h3 { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 8px; }
.step p { color: rgba(255,255,255,.6); font-size: .95rem; }

/* =================================================================
   RÉFÉRENCES
   ================================================================= */
.refs { background: var(--paper); padding: clamp(70px, 10vw, 130px) var(--gutter); }
.refs__grid {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 230px; gap: 18px;
}
.ref { position: relative; border-radius: var(--radius); overflow: hidden; }
.ref--tall { grid-row: span 2; }
.ref--wide { grid-column: span 2; }
.ref img { width: 100%; height: 100%; object-fit: cover; transition: transform .9s var(--ease); }
.ref:hover img { transform: scale(1.08); }
.ref::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(6,18,31,.85), transparent 55%); }
.ref figcaption {
  position: absolute; left: 20px; bottom: 18px; z-index: 2; color: #fff;
  font-family: var(--font-display); font-weight: 600; font-size: 1.05rem;
}
.ref figcaption span { display: block; font-size: .75rem; font-weight: 500; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-400); margin-bottom: 4px; }

/* =================================================================
   URGENCE
   ================================================================= */
.urgence { background: var(--navy-950); padding: clamp(40px, 7vw, 80px) var(--gutter); }
.urgence__inner {
  max-width: var(--maxw); margin: 0 auto;
  background: linear-gradient(120deg, var(--navy-800), var(--navy-700));
  border-radius: var(--radius-lg); padding: clamp(30px, 5vw, 54px);
  display: flex; align-items: center; gap: 30px; flex-wrap: wrap;
  position: relative; overflow: hidden;
  border: 1px solid rgba(233,162,61,.25);
}
.urgence__inner > div { flex: 1; min-width: 260px; }
.urgence__pulse {
  position: absolute; right: -60px; top: -60px; width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(233,162,61,.35), transparent 70%);
}
.urgence__tag {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-display); font-size: 12px; font-weight: 600;
  letter-spacing: .18em; text-transform: uppercase; color: var(--amber); margin-bottom: 12px;
}
.urgence__tag::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--amber); animation: ping 2s infinite; }
.urgence h2 { font-family: var(--font-display); color: #fff; font-size: clamp(1.4rem, 3vw, 2.1rem); font-weight: 600; line-height: 1.1; }
.urgence .btn--solid { background: var(--amber); color: var(--navy-950); box-shadow: 0 10px 30px -10px rgba(233,162,61,.7); }
.urgence .btn--solid:hover { background: #f3b558; }

/* =================================================================
   CONTACT
   ================================================================= */
.contact { background: var(--cloud); padding: clamp(70px, 10vw, 130px) var(--gutter); }
.contact__grid {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(40px, 6vw, 80px);
}
.contact__lead { color: var(--steel); font-size: 1.1rem; margin: 22px 0 32px; max-width: 42ch; }
.contact__info { display: flex; flex-direction: column; gap: 16px; margin-bottom: 28px; }
.contact__info li { display: flex; align-items: center; gap: 14px; font-size: 1.05rem; font-weight: 500; color: var(--navy-800); }
.contact__info svg { width: 20px; height: 20px; fill: var(--blue-500); flex: none; }
.contact__socials { display: flex; gap: 14px; }
.contact__socials a {
  font-family: var(--font-display); font-weight: 600; font-size: 14px;
  padding: 9px 18px; border: 1px solid var(--concrete); border-radius: 100px;
  color: var(--navy-800); transition: all .3s;
}
.contact__socials a:hover { background: var(--navy-800); color: #fff; border-color: var(--navy-800); }

.contact__form {
  background: var(--paper); border-radius: var(--radius-lg);
  padding: clamp(26px, 4vw, 40px); box-shadow: 0 40px 80px -40px rgba(15,43,80,.35);
  display: flex; flex-direction: column; gap: 18px; border: 1px solid var(--concrete);
}
.field { position: relative; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field input, .field textarea {
  width: 100%; font-family: var(--font-body); font-size: 1rem; color: var(--ink);
  background: var(--cloud); border: 1px solid var(--concrete); border-radius: 12px;
  padding: 18px 16px 8px; transition: border-color .25s, background .25s;
  resize: vertical;
}
.field textarea { min-height: 120px; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue-500); background: #fff; }
.field label {
  position: absolute; left: 16px; top: 15px; color: var(--steel); font-size: 1rem;
  pointer-events: none; transition: all .2s var(--ease);
}
.field input:focus + label, .field input:not(:placeholder-shown) + label,
.field textarea:focus + label, .field textarea:not(:placeholder-shown) + label {
  top: 7px; font-size: .72rem; color: var(--blue-500); font-weight: 600;
}
.contact__form .btn { width: 100%; margin-top: 6px; }
.contact__form-note { text-align: center; font-size: .85rem; color: var(--steel); }

/* =================================================================
   FOOTER
   ================================================================= */
.footer { background: var(--navy-950); color: rgba(255,255,255,.7); padding: clamp(50px, 7vw, 80px) var(--gutter) 30px; }
.footer__top {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px;
  padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer__brand .brand { margin-bottom: 18px; }
.footer__brand p { max-width: 40ch; font-size: .95rem; }
.footer h4 { font-family: var(--font-display); color: #fff; font-size: 15px; letter-spacing: .08em; margin-bottom: 16px; text-transform: uppercase; }
.footer__nav, .footer__contact { display: flex; flex-direction: column; gap: 10px; }
.footer__nav a:hover, .footer__contact a:hover { color: var(--blue-400); }
.footer__bottom {
  max-width: var(--maxw); margin: 24px auto 0;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: .85rem; color: rgba(255,255,255,.5);
}

/* =================================================================
   ANIMATIONS REVEAL (état initial, JS gère l'arrivée)
   ================================================================= */
.reveal { opacity: 0; transform: translateY(28px); }
.reveal-media { opacity: 0; transform: translateY(40px) scale(.98); }
body.no-anim .reveal, body.no-anim .reveal-media { opacity: 1; transform: none; }

/* =================================================================
   RESPONSIVE
   ================================================================= */
@media (max-width: 980px) {
  .nav, .header__cta .btn--phone { display: none; }
  .burger { display: flex; }
  .about, .contact__grid { grid-template-columns: 1fr; }
  .about__media { order: -1; max-width: 480px; }
  .services__grid, .pillars__inner { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .refs__grid { grid-template-columns: 1fr 1fr; grid-auto-rows: 200px; }
  .ref--wide { grid-column: span 2; }
}
@media (max-width: 620px) {
  .brand__name { font-size: 16px; letter-spacing: .08em; }
  .header__cta .btn--solid { display: none; }
  .topbar__inner { justify-content: center; gap: 14px 20px; }
  .topbar__item:first-child { margin-right: 0; width: 100%; justify-content: center; }
  .field-row { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; }
  .refs__grid { grid-template-columns: 1fr; grid-auto-rows: 220px; }
  .ref--wide, .ref--tall { grid-column: auto; grid-row: auto; }
  .urgence__inner { flex-direction: column; align-items: flex-start; }
  .hero__title { font-size: clamp(2.4rem, 11vw, 3.4rem); }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal, .reveal-media { opacity: 1 !important; transform: none !important; }
}

/* =================================================================
   PAGES INTERNES (entreprise, prestations, services, références, contact)
   ================================================================= */
.nav a.is-active { color: #fff; }
.nav a.is-active::after { width: 100%; }

.page-hero {
  position: relative; overflow: hidden; color: #fff;
  background: radial-gradient(120% 130% at 72% -20%, var(--navy-800), var(--navy-950) 72%);
  padding: clamp(40px, 6vw, 64px) 0 clamp(48px, 7vw, 76px);
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(127,208,255,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(127,208,255,.07) 1px, transparent 1px);
  background-size: 54px 54px; mask-image: radial-gradient(95% 80% at 60% 0%, #000, transparent 82%);
}
.page-hero__inner { position: relative; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 22px; font-family: var(--font-display); font-size: 13px; letter-spacing: .02em; color: rgba(255,255,255,.55); }
.breadcrumb a { color: var(--blue-400); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb [aria-current] { color: rgba(255,255,255,.85); }
.page-hero h1 { font-family: var(--font-display); font-weight: 600; font-size: clamp(2.1rem, 5.2vw, 3.6rem); line-height: 1.05; letter-spacing: -.02em; max-width: 20ch; }
.page-hero h1 em { font-style: normal; color: var(--blue-400); }
.page-hero__lead { margin-top: 20px; max-width: 62ch; color: rgba(255,255,255,.76); font-size: clamp(1.05rem, 1.5vw, 1.2rem); }

/* Sections de contenu génériques */
.section { padding: clamp(58px, 8vw, 108px) var(--gutter); }
.section--light { background: var(--cloud); color: var(--ink); }
.section--paper { background: var(--paper); color: var(--ink); }
.section--navy { background: var(--navy-900); color: #fff; position: relative; }
.section__inner { max-width: var(--maxw); margin: 0 auto; }
.section__inner--narrow { max-width: 860px; }

/* Texte courant SEO */
.prose { max-width: 72ch; }
.prose > * + * { margin-top: 18px; }
.prose p { color: var(--steel); font-size: 1.06rem; }
.section--navy .prose p { color: rgba(255,255,255,.74); }
.prose h2 { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.5rem, 3vw, 2rem); color: var(--navy-800); letter-spacing: -.01em; margin-top: 38px; }
.section--navy .prose h2 { color: #fff; }
.prose h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; color: var(--navy-800); margin-top: 26px; }
.prose a { color: var(--blue-500); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.prose a:hover { color: var(--navy-700); }
.prose ul { display: flex; flex-direction: column; gap: 12px; margin-top: 8px; }
.prose ul li { position: relative; padding-left: 30px; color: var(--steel); }
.prose ul li::before { content: ""; position: absolute; left: 0; top: 7px; width: 16px; height: 16px; background: var(--blue-500); border-radius: 50%; mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='m9 16.2-3.5-3.5L4 14.2 9 19.2 20 8.2l-1.5-1.5z'/%3E%3C/svg%3E") center/14px no-repeat; }

/* Split contenu + média */
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(40px, 6vw, 80px); align-items: center; }
.split--rev { grid-template-columns: .9fr 1.1fr; }
.split--rev > .split__media { order: -1; }
.split__media img { width: 100%; border-radius: var(--radius-lg); aspect-ratio: 4/3; object-fit: cover; box-shadow: 0 40px 80px -34px rgba(15,43,80,.5); }

/* Cartes (hub prestations / atouts) */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 50px; }
.cards--2 { grid-template-columns: repeat(2, 1fr); }
.card-link {
  display: flex; flex-direction: column; padding: 30px; border-radius: var(--radius-lg);
  background: var(--paper); border: 1px solid var(--concrete); color: var(--ink);
  transition: transform .4s var(--ease), box-shadow .4s, border-color .4s;
}
.section--light .card-link { background: #fff; }
.card-link:hover { transform: translateY(-7px); box-shadow: 0 36px 70px -32px rgba(15,43,80,.32); border-color: transparent; }
.card-link__num { font-family: var(--font-display); font-weight: 600; color: var(--blue-500); font-size: .95rem; letter-spacing: .12em; }
.card-link h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.35rem; color: var(--navy-800); margin: 14px 0 10px; }
.card-link p { color: var(--steel); font-size: .98rem; flex: 1; }
.card-link__more { margin-top: 18px; font-family: var(--font-display); font-weight: 600; font-size: .92rem; color: var(--blue-500); display: inline-flex; align-items: center; gap: 7px; }
.card-link__more::after { content: "→"; transition: transform .3s; }
.card-link:hover .card-link__more::after { transform: translateX(4px); }

/* Atouts (icônes) */
.feature { padding: 26px; border-radius: var(--radius); background: var(--paper); border: 1px solid var(--concrete); }
.section--light .feature { background: #fff; }
.feature svg { width: 30px; height: 30px; fill: var(--blue-500); margin-bottom: 14px; }
.feature h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.12rem; color: var(--navy-800); margin-bottom: 7px; }
.feature p { color: var(--steel); font-size: .96rem; }

/* Zones d'intervention */
.zones { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.zones span { font-family: var(--font-display); font-weight: 500; font-size: .92rem; color: var(--navy-800); background: var(--concrete); padding: 9px 16px; border-radius: 100px; }
.section--navy .zones span { color: #fff; background: rgba(255,255,255,.09); }

/* FAQ (details natif, accessible) */
.faq { max-width: 820px; margin: 40px auto 0; }
.faq details { border-bottom: 1px solid var(--concrete); }
.section--navy .faq details { border-color: rgba(255,255,255,.12); }
.faq summary {
  list-style: none; cursor: pointer; padding: 22px 44px 22px 0; position: relative;
  font-family: var(--font-display); font-weight: 600; font-size: 1.1rem; color: var(--navy-800);
}
.section--navy .faq summary { color: #fff; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%); font-size: 1.5rem; color: var(--blue-500); transition: transform .3s; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq summary:focus-visible { outline-offset: 4px; }
.faq__a { padding: 0 0 24px; color: var(--steel); max-width: 70ch; }
.section--navy .faq__a { color: rgba(255,255,255,.72); }

/* Bandeau CTA partagé */
.cta-band { background: var(--navy-950); padding: clamp(50px, 8vw, 96px) var(--gutter); }
.cta-band__inner {
  max-width: var(--maxw); margin: 0 auto; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 22px;
}
.cta-band h2 { font-family: var(--font-display); font-weight: 600; color: #fff; font-size: clamp(1.8rem, 4vw, 3rem); line-height: 1.08; letter-spacing: -.02em; max-width: 18ch; }
.cta-band h2 em { font-style: normal; color: var(--blue-400); }
.cta-band p { color: rgba(255,255,255,.7); max-width: 52ch; }
.cta-band__actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; margin-top: 6px; }

/* Bloc liens connexes (maillage interne) */
.related { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.related a {
  font-family: var(--font-display); font-weight: 600; font-size: .92rem; color: var(--navy-800);
  border: 1px solid var(--concrete); border-radius: 100px; padding: 10px 18px; transition: all .3s;
}
.related a:hover { background: var(--navy-800); color: #fff; border-color: var(--navy-800); }

/* Galerie références (page dédiée) */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 50px; }
.gallery figure { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/3; }
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.gallery figure:hover img { transform: scale(1.07); }
.gallery figcaption { position: absolute; left: 18px; bottom: 16px; z-index: 2; color: #fff; font-family: var(--font-display); font-weight: 600; }
.gallery figcaption span { display: block; font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-400); margin-bottom: 3px; }
.gallery figure::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(6,18,31,.8), transparent 55%); }

@media (max-width: 900px) {
  .split, .split--rev { grid-template-columns: 1fr; }
  .split--rev > .split__media { order: 0; }
  .cards, .cards--2 { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .gallery { grid-template-columns: 1fr; }
}