:root{--blue:#285362;--teal:#39768a;--pale:#eaf0ef;--ink:#243a42;--line:#d7e1e2}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:#fff;color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.65}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #6b9fad;outline-offset:5px}.wrap{max-width:1280px;margin:auto;padding:0 6%}header{position:sticky;top:0;z-index:10;background:#fffffffa;border-bottom:1px solid var(--line)}.nav{min-height:104px;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:flex;align-items:center;gap:13px}.brand img{width:75px;height:75px;object-fit:contain}.brand strong{display:block;letter-spacing:.18em;font-size:21px;color:var(--blue)}.brand small{font-size:11px;letter-spacing:.05em}.links{display:flex;align-items:center;gap:30px;font-size:14px}.links a:hover,.links [aria-current]{color:var(--teal)}.button{display:inline-flex;justify-content:center;align-items:center;gap:25px;padding:14px 22px;background:var(--blue);color:white!important;font-size:14px;border:1px solid var(--blue);cursor:pointer}.button.light{background:white;color:var(--blue)!important}.button.outline{background:transparent;color:var(--blue)!important}.eyebrow{text-transform:uppercase;font-size:11px;letter-spacing:.2em;color:var(--teal);font-weight:bold;display:block;margin-bottom:22px}h1,h2,h3,p{margin-top:0}h1,h2{font-family:Georgia,'Times New Roman',serif;font-weight:400;line-height:1.1;letter-spacing:-.035em}h1{font-size:clamp(42px,5vw,73px);margin-bottom:28px}h1 em,h2 em{font-weight:400;color:var(--teal)}h2{font-size:clamp(34px,4vw,49px);margin-bottom:25px}h3{font-size:20px;font-weight:400;line-height:1.3}.hero{padding-top:60px;padding-bottom:65px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.hero p{max-width:440px;color:#55666b;font-size:17px}.actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}.visual{position:relative;padding:0 0 28px 22px}.visual:before{content:'';position:absolute;inset:30px 28px 0 0;background:var(--pale);z-index:-1}.visual img{width:100%;height:480px;object-fit:cover}.photo-note{position:absolute;bottom:9px;right:0;background:var(--blue);color:white;padding:17px 24px;font-size:12px;letter-spacing:.08em}.band{background:var(--blue);color:white}.band .wrap{display:flex;justify-content:space-between;gap:20px;padding-top:23px;padding-bottom:23px;font-size:13px;letter-spacing:.04em}.band span:last-child{color:#d2e1e5}section{padding:88px 0}.section-top{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:end;margin-bottom:38px}.section-top p{color:#5b6d71;max-width:480px}.services{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.service{border-top:1px solid var(--line);padding-top:24px}.num{color:var(--teal);font-size:12px;display:block;margin-bottom:30px}.service p{font-size:15px;color:#5b6d71}.service ul{padding-left:18px;font-size:14px;color:#4c6068}.pale{background:#f1f5f4}.projects{display:grid;grid-template-columns:1.5fr 1fr;gap:32px}.project img{width:100%;height:380px;object-fit:cover;display:block}.project.large img{object-fit:contain;background:#e3e9e7}.project figcaption{padding:18px 0;border-bottom:1px solid #c9d7d9;display:flex;justify-content:space-between;gap:15px}.project{margin:0}.project figcaption small{color:#62777d}.method{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:45px}.method div{border-top:1px solid var(--line);padding-top:20px}.method p{font-size:14px;color:#62747b}.pro{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.pro img{width:100%;height:410px;object-fit:cover}.pro p{color:#596e75}.cta{background:var(--blue);color:white}.cta .wrap{display:flex;justify-content:space-between;align-items:center;gap:35px}.cta .eyebrow{color:#b6d1d8}.cta h2{margin-bottom:15px}.cta p{margin:0;color:#d9e7eb}.cta .button{white-space:nowrap}footer{padding:38px 0 25px;font-size:13px}.foot{display:flex;justify-content:space-between;gap:25px;flex-wrap:wrap}.foot strong{letter-spacing:.12em}.foot p{margin:8px 0}.foot a:hover{text-decoration:underline}.fine{border-top:1px solid var(--line);margin-top:28px;padding-top:20px;font-size:11px;color:#63767d}.contact-intro{padding:60px 0 35px}.contact-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;padding-bottom:80px}.contact-details{background:var(--pale);padding:35px;align-self:start}.contact-details h3{margin-top:30px}.contact-details h3:first-child{margin-top:0}.contact-details a{display:block;overflow-wrap:anywhere}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}label{display:block;font-size:13px;font-weight:bold}input,select,textarea{display:block;width:100%;margin-top:7px;padding:12px;border:1px solid #bdcdd1;background:#fff;border-radius:0;color:var(--ink);font-size:15px}textarea{resize:vertical;min-height:130px}.full{grid-column:1/-1}.hint{font-size:12px;color:#526b74}.form-note{padding:12px 16px;background:var(--pale);font-size:13px;margin-top:20px}.menu{display:none}@media(max-width:800px){.nav{min-height:85px;flex-wrap:wrap;gap:0;padding-top:6px;padding-bottom:8px}.brand img{width:58px;height:58px}.brand strong{font-size:18px}.menu{display:block;background:none;border:1px solid var(--line);padding:6px 10px;color:var(--blue)}.links{display:none;width:100%;padding:20px 0 10px;flex-direction:column;align-items:stretch;gap:15px}.links.open{display:flex}.hero{grid-template-columns:1fr;gap:30px;padding-top:40px;padding-bottom:45px}.visual img{height:320px}.hero h1{max-width:620px}.hero p{max-width:none}.band .wrap{flex-direction:column;gap:3px}.section-top,.pro,.contact-layout{grid-template-columns:1fr;gap:20px}.services{grid-template-columns:1fr;gap:24px}.num{margin-bottom:13px}.projects{grid-template-columns:1fr}.method{grid-template-columns:1fr 1fr}.project img{height:auto;max-height:470px;object-fit:contain}.cta .wrap{align-items:start;flex-direction:column}.contact-layout{gap:30px}.contact-details{padding:25px}section{padding:58px 0}.section-top{margin-bottom:25px}.form-grid{grid-template-columns:1fr}.full{grid-column:auto}.pro img{height:300px}.contact-intro{padding-top:35px}h1{font-size:46px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Plans décoratifs fixés à la fenêtre ; les contenus défilent au-dessus. */
body{isolation:isolate;background:#fbfcfb}body:before{content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;background:url('assets/plans-filigrane.svg') center center/cover no-repeat;opacity:.24}header{background:rgba(255,255,255,.96)}.pale{background:rgba(235,242,240,.83)}.hero,.contact-intro,.project-intro{background:linear-gradient(90deg,rgba(255,255,255,.78),rgba(255,255,255,.23))}.service{background:rgba(255,255,255,.45)}.contact-details{background:rgba(234,240,239,.92)}.contact-layout>div{background:rgba(255,255,255,.88);padding:24px}.links{gap:21px;font-size:13px}.brand small{font-size:10px}.maps-link{display:inline-flex!important;align-items:center;gap:10px;margin-top:22px;font-size:13px;color:var(--blue)}.maps-link img{height:32px;width:32px;object-fit:contain;flex-shrink:0}.project-intro{padding-top:60px;padding-bottom:5px}.project-intro h1{font-size:clamp(42px,4.8vw,66px)}.lead{max-width:690px;color:#526b73;font-size:18px}.project-tags{display:flex;flex-wrap:wrap;gap:10px;margin:30px 0}.project-tags span{border:1px solid #c7d8dc;padding:6px 13px;font-size:12px;background:#ffffffb8}.project-cover{margin:35px 0 0}.project-cover img{display:block;width:100%;height:auto;max-height:650px;object-fit:cover}.project-cover figcaption{font-size:13px;color:#526b73;padding:17px 0;display:flex;justify-content:space-between;gap:20px}.project-cover figcaption span{white-space:nowrap}.material-section{background:rgba(238,244,240,.85);margin-top:50px}.source-note{font-size:12px;max-width:900px;margin:30px 0 0;color:#52686e}.source-note a{text-decoration:underline;text-underline-offset:3px}.site-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:25px;margin-top:35px}.site-gallery figure{margin:0}.site-gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}.site-gallery figcaption{display:flex;gap:16px;padding-top:20px}.site-gallery figcaption>span{font-size:12px;color:var(--teal)}.site-gallery h3{font-size:18px;margin-bottom:10px}.site-gallery p{font-size:14px;color:#536c74}.zoom{display:block;cursor:zoom-in}.zoom img{transition:filter .2s}.zoom:hover img{filter:brightness(1.04)}.lightbox{border:none;padding:55px 20px 15px;background:#10252d;color:white;max-width:95vw;max-height:95dvh;width:1200px}.lightbox::backdrop{background:#10252deb}.lightbox img{display:block;width:100%;max-height:75dvh;object-fit:contain}.lightbox p{margin:12px 0 0;text-align:center;font-size:13px}.close-lightbox{position:absolute;right:20px;top:10px;background:transparent;border:1px solid #94b5bf;color:white;padding:5px 12px;cursor:pointer}.current-project{background:rgba(255,255,255,.5)}
@media(max-width:1050px){.nav{gap:15px}.links{gap:12px}.brand strong{font-size:18px}.brand small{font-size:9px}.brand img{width:60px;height:60px}}
@media(max-width:800px){body:before{background-size:auto 100%;opacity:.19}.project-intro{padding-top:35px}.site-gallery{grid-template-columns:1fr}.project-cover figcaption{flex-direction:column;gap:5px}.contact-layout>div{padding:15px}.project-intro h1{font-size:40px}.links{font-size:15px}.material-section{margin-top:25px}.site-gallery img{max-height:460px;object-fit:contain}.maps-link{font-size:12px}}
@media(prefers-reduced-motion:reduce){.zoom img{transition:none}}
.project-tags>a{border:1px solid #c7d8dc;padding:6px 13px;font-size:12px;background:#ffffffd9}.project-tags>a:hover{background:var(--blue);color:white}.case-study{border-bottom:1px solid var(--line)}.case-study:nth-of-type(even){background:rgba(235,242,240,.7)}.case-photos{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.case-photos figure{margin:0}.case-photos img{width:100%;height:410px;object-fit:contain;background:#ffffffab;display:block}.case-photos figcaption{font-size:13px;margin-top:12px;color:var(--blue);display:flex;justify-content:space-between;gap:10px}.case-count-1{grid-template-columns:minmax(0,750px);justify-content:center}.case-count-1 img{height:auto;max-height:900px}.realisation-teasers{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}.realisation-teaser img{display:block;width:100%;height:290px;object-fit:contain;background:#ffffffad;margin-bottom:20px}.realisation-teaser>span{font-size:10px;letter-spacing:.09em;color:var(--teal)}.realisation-teaser h3{font-size:20px;margin:10px 0 15px}.realisation-teaser small{font-size:12px;color:var(--teal)}.realisation-teaser:hover h3{text-decoration:underline;text-underline-offset:5px}@media(max-width:950px){.realisation-teasers{grid-template-columns:1fr 1fr}.case-photos{grid-template-columns:1fr 1fr}.case-photos .case-main{grid-column:1/-1}.case-photos .case-main img{height:auto;max-height:680px}}@media(max-width:600px){.case-photos,.realisation-teasers{grid-template-columns:1fr}.case-photos img{height:auto;max-height:700px}.realisation-teaser img{height:auto;max-height:500px}.case-study{padding:50px 0}}
@media(min-width:951px){.realisation-teasers{grid-template-columns:repeat(3,minmax(0,1fr))}.realisation-teaser img{height:330px}}

/* Univers graphique de la page Savoir-faire. */
.savoir-intro{padding-bottom:18px}.savoir-intro .lead{max-width:970px}.savoir-decor{position:relative;margin-top:20px;margin-bottom:0}.savoir-decor img{display:block;width:100%;height:auto;box-shadow:0 18px 50px #28536214}.savoir-decor+section{padding-top:68px}@media(max-width:800px){.savoir-intro .lead{font-size:16px}.savoir-decor{padding:0;margin-top:10px}.savoir-decor+section{padding-top:48px}}

.savoir-conclusion{margin:44px auto 0;padding-top:26px;border-top:1px solid var(--line);max-width:850px;text-align:center;font-family:Georgia,serif;font-size:clamp(22px,2.3vw,30px);line-height:1.4;color:var(--blue)}

.project-range{padding:55px 0 65px}.project-range .lead{max-width:940px}.self-build{margin-top:38px;padding:30px 34px;background:rgba(234,240,239,.9);border-left:3px solid var(--teal)}.self-build .eyebrow{margin-bottom:14px}.self-build h3{font-family:Georgia,serif;font-size:28px}.self-build p{max-width:850px;margin-bottom:0}.mission-details{margin-top:30px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0}.mission-details summary{cursor:pointer;color:var(--blue);font-weight:bold}.mission-details .services{margin-top:25px}@media(max-width:800px){.self-build{padding:24px}.project-range{padding:40px 0}}

/* Lisibilité des repères de la page Accompagnement. */
.page-accompagnement .project-range>.wrap>.eyebrow,.page-accompagnement .section-top .eyebrow,.page-accompagnement .self-build .eyebrow{font-size:15px;letter-spacing:.12em;line-height:1.5}.accompagnement-lead{max-width:980px}.accompagnement-lead .lead{max-width:none}.page-accompagnement .project-intro h1{max-width:1120px;font-size:clamp(38px,4.4vw,60px)}@media(max-width:800px){.page-accompagnement .project-range>.wrap>.eyebrow,.page-accompagnement .section-top .eyebrow,.page-accompagnement .self-build .eyebrow{font-size:14px}.page-accompagnement .project-intro h1{font-size:40px}}

.form-trap{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}button:disabled{opacity:.6;cursor:wait}