:root {
  --red: #d71920;
  --red-dark: #a70f14;
  --ink: #181818;
  --muted: #66625f;
  --paper: #ffffff;
  --stone: #f4f1ed;
  --line: #ded9d3;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
.wrap { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 1rem; top: 1rem; z-index: 100; background: #fff; padding: .7rem 1rem; }

.topbar { background: #090909; color: #fff; font-size: .92rem; }
.topbar .wrap { min-height: 42px; display: flex; justify-content: flex-end; align-items: center; gap: 1.2rem; }
.topbar a { text-decoration: none; }
.topbar a:hover { text-decoration: underline; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(8px); }
.nav { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { text-decoration: none; font-size: 1.65rem; font-weight: 900; letter-spacing: -.05em; white-space: nowrap; }
.brand .crea, .brand .num { color: var(--red); }
.brand .pierres { color: #111; }
.brand .num { margin-left: .12em; }
.menu { display: flex; align-items: center; gap: 1.4rem; }
.menu a { text-decoration: none; font-weight: 700; font-size: .95rem; }
.menu a:hover, .menu a[aria-current="page"] { color: var(--red); }
.menu .nav-cta { color: #fff; background: var(--red); border-radius: 4px; padding: .68rem 1rem; }
.menu .nav-cta:hover { color: #fff; background: var(--red-dark); }

.hero { position: relative; min-height: 590px; display: grid; align-items: center; color: #fff; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10,10,10,.89) 0%, rgba(10,10,10,.7) 48%, rgba(10,10,10,.18) 100%), url("images/chantier-1.jpg") center 55%/cover; }
.hero .wrap { position: relative; padding-block: 76px; }
.eyebrow { margin: 0 0 .8rem; color: var(--red); font-weight: 900; text-transform: uppercase; letter-spacing: .11em; font-size: .82rem; }
.hero .eyebrow { color: #ff656a; }
h1, h2, h3 { line-height: 1.13; margin-top: 0; }
h1 { max-width: 820px; margin-bottom: 1.25rem; font-size: clamp(2.55rem, 6vw, 5rem); letter-spacing: -.055em; }
h2 { margin-bottom: 1rem; font-size: clamp(2rem, 4vw, 3.25rem); letter-spacing: -.045em; }
h3 { margin-bottom: .6rem; font-size: 1.3rem; }
.hero p { max-width: 650px; margin: 0 0 1.7rem; font-size: clamp(1.05rem, 2vw, 1.3rem); color: #f2f2f2; }
.actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: .72rem 1.15rem; border: 2px solid var(--red); border-radius: 4px; background: var(--red); color: #fff; text-decoration: none; font-weight: 800; }
.btn:hover { background: var(--red-dark); border-color: var(--red-dark); }
.btn-outline { background: transparent; border-color: rgba(255,255,255,.8); }
.btn-outline:hover { background: #fff; border-color: #fff; color: #111; }
.proof-strip { background: var(--red); color: #fff; }
.proofs { display: grid; grid-template-columns: repeat(3, 1fr); }
.proof { padding: 1.3rem 1.5rem; border-left: 1px solid rgba(255,255,255,.28); text-align: center; font-weight: 800; }
.proof:last-child { border-right: 1px solid rgba(255,255,255,.28); }

section { padding-block: 84px; }
.intro { max-width: 760px; color: var(--muted); font-size: 1.08rem; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; margin-top: 2.2rem; }
.card { display: flex; flex-direction: column; min-height: 100%; border: 1px solid var(--line); background: #fff; }
.card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.card-body { display: flex; flex: 1; flex-direction: column; padding: 1.45rem; }
.card p { margin-top: 0; color: var(--muted); }
.text-link { margin-top: auto; color: var(--red-dark); font-weight: 800; text-decoration-thickness: 2px; text-underline-offset: 4px; }
.stone-section { background: var(--stone); }
.split { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(2rem, 6vw, 5rem); }
.split img { width: 100%; min-height: 440px; object-fit: cover; }
.checklist { padding: 0; margin: 1.4rem 0 0; list-style: none; }
.checklist li { position: relative; margin: .65rem 0; padding-left: 1.7rem; }
.checklist li::before { content: ""; position: absolute; left: 0; top: .58em; width: 9px; height: 9px; background: var(--red); }
.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.2rem; counter-reset: steps; }
.step { counter-increment: steps; border-top: 4px solid var(--red); padding: 1.3rem 1.1rem; background: var(--stone); }
.step::before { content: "0" counter(steps); display: block; margin-bottom: .7rem; color: var(--red); font-weight: 900; font-size: 1.6rem; }
.areas { display: flex; flex-wrap: wrap; gap: .6rem; padding: 0; list-style: none; }
.areas li { border: 1px solid var(--line); background: #fff; padding: .48rem .8rem; font-weight: 700; }
.cta { background: #0d0d0d; color: #fff; }
.cta .wrap { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.cta h2 { margin-bottom: .6rem; }
.cta p { margin: 0; color: #d8d8d8; }

.page-hero { padding-block: 80px; background: #111; color: #fff; }
.page-hero h1 { max-width: 900px; font-size: clamp(2.4rem,5vw,4.5rem); }
.page-hero p { max-width: 720px; margin-bottom: 0; color: #ddd; font-size: 1.15rem; }
.service-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 4rem; align-items: start; }
.service-grid aside { padding: 1.5rem; background: var(--stone); border-top: 4px solid var(--red); }
.service-grid aside p { margin: .4rem 0; }
.gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.gallery img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }

footer { padding-block: 48px; background: #050505; color: #d7d7d7; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 2rem; }
footer h2, footer h3 { color: #fff; }
footer h2 { font-size: 1.45rem; letter-spacing: -.02em; }
footer h3 { font-size: 1rem; }
footer p { margin: .35rem 0; }
footer a { color: #fff; }
.legal { margin-top: 2rem; padding-top: 1.2rem; border-top: 1px solid #333; font-size: .88rem; color: #999; }

@media (max-width: 860px) {
  .topbar .wrap { justify-content: center; gap: .7rem; font-size: .82rem; }
  .nav { min-height: auto; padding-block: 14px; align-items: flex-start; flex-direction: column; gap: .8rem; }
  .menu { width: 100%; gap: .75rem 1rem; flex-wrap: wrap; }
  .menu a { font-size: .88rem; }
  .site-header { position: static; }
  .hero { min-height: 540px; }
  .cards, .proofs, .steps, .footer-grid { grid-template-columns: 1fr; }
  .proof { border: 0; border-bottom: 1px solid rgba(255,255,255,.25); }
  .split, .service-grid { grid-template-columns: 1fr; gap: 2rem; }
  .split img { min-height: 320px; }
  .cta .wrap { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 520px) {
  .wrap { width: min(calc(100% - 28px), var(--max)); }
  .topbar .wrap { min-height: 52px; flex-wrap: wrap; line-height: 1.2; }
  .brand { font-size: 1.45rem; }
  .menu .nav-cta { padding: .48rem .68rem; }
  section { padding-block: 62px; }
  .hero .wrap { padding-block: 60px; }
  .gallery { grid-template-columns: 1fr; }
}