:root{--marine:#0b2540;--marine-2:#123456;--or:#f2c55c;--or-fonce:#8a6510;--texte:#1d2733;--doux:#5a6675;--fond:#f7f5f0;--blanc:#fff;--bord:#e2ddd2}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--texte);background:var(--fond);margin:0;font:17px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}h1,h2,h3{color:var(--marine);font-family:Georgia,Times New Roman,serif;line-height:1.2}h2{margin:0 0 .6em;font-size:clamp(1.6rem,4vw,2.2rem)}h3{margin:0 0 .3em;font-size:1.2rem}a{color:var(--marine-2)}a:focus-visible,.btn:focus-visible,summary:focus-visible{outline:3px solid var(--or);outline-offset:3px}img{max-width:100%;height:auto;display:block}.wrap{max-width:1080px;margin:0 auto;padding:0 16px}section{padding:64px 0}.btn{text-align:center;border-radius:8px;padding:14px 22px;font-weight:700;text-decoration:none;display:inline-block}.btn-or{background:var(--or);color:var(--marine)}.btn-ligne{color:inherit;border:2px 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14px;font-size:.95rem}.bandeau{background:linear-gradient(160deg,var(--marine),var(--marine-2));color:#dfe6ee;padding:40px 0 44px}.bandeau h1{color:var(--blanc);max-width:24ch;margin:.2em 0 .3em;font-size:clamp(1.8rem,5vw,2.6rem)}.bandeau p{max-width:60ch;margin:0 0 1.2em;font-size:1.1rem}.fil{font-size:.9rem}.fil a{color:#b9c6d4}.prose>*{max-width:72ch}.prose h2{margin:1.6em 0 .5em;font-size:1.5rem}.prose ul{padding-left:1.2em}.prose li{margin:.25em 0}.cartes-chantier{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;display:grid}.cartes-chantier a{background:var(--blanc);border:1px solid var(--bord);color:inherit;border-radius:12px;text-decoration:none;overflow:hidden}.cartes-chantier a:hover{border-color:var(--or-fonce)}.cartes-chantier img{aspect-ratio:4/3;object-fit:cover;width:100%}.cartes-chantier div{padding:14px 16px}.cartes-chantier small{color:var(--doux)}.galerie{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;margin:24px 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