:root{--navy:#17344b;--blue:#3168a8;--muted:#60717b;--line:#dce2e2;--cream:#f5f4ee;--red:#a82427}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:#fff;color:var(--navy);font-family:"Segoe UI",Arial,sans-serif;font-size:16px;line-height:1.6}button,input,select,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{cursor:default}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #b76122;outline-offset:4px}p,h1,h2,h3{margin-top:0}h1,h2,h3{line-height:1.12;letter-spacing:-.045em}h1{font-size:clamp(54px,5.5vw,83px);font-weight:600;margin-bottom:28px}h1 em{font-family:Georgia,serif;font-weight:400;color:var(--blue);letter-spacing:-.065em}h2{font-size:clamp(34px,3.7vw,52px);font-weight:550;margin-bottom:0}h3{font-size:25px;font-weight:600}p{margin-bottom:18px}.wrap{width:min(1200px,calc(100% - 96px));margin:auto}.section{padding-top:100px;padding-bottom:100px}.eyebrow{font-size:11px;letter-spacing:.15em;font-weight:700;margin-bottom:27px}.topbar{background:var(--navy);color:#fff;display:flex;justify-content:space-between;align-items:center;padding:10px 48px;font-size:11px;letter-spacing:.08em}.topbar a{font-size:12px;letter-spacing:.02em}.topbar a span{margin-left:16px}.header{max-width:1440px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:22px 48px}.brand{display:flex;min-width:0;gap:18px;align-items:center;font-weight:700;font-size:19px;letter-spacing:.05em}.brand img{width:150px;height:auto;flex-shrink:0}.brand>span{min-width:0}.brand small{display:block;font-size:11px;font-weight:400;letter-spacing:.015em;margin-top:3px;color:var(--muted)}nav{display:flex;align-items:center;gap:34px;font-size:13px;font-weight:600}nav>a:not(.button):hover,.text-link:hover,.email:hover{text-decoration:underline;text-underline-offset:5px}.button{display:inline-flex;justify-content:space-between;align-items:center;gap:26px;border:1px solid var(--blue);background:var(--blue);color:white;padding:16px 23px;font-size:14px;line-height:1.4;font-weight:600;transition:background .2s,transform .2s}.button:hover{background:#214f85;transform:translateY(-2px)}.button.small{padding:12px 18px;font-size:12px}.menu-toggle{display:none}.hero{display:grid;grid-template-columns:1fr 1.08fr;gap:65px;align-items:center;padding-top:50px;padding-bottom:73px}.dot{display:inline-block;width:6px;height:6px;background:var(--blue);border-radius:50%;margin-right:7px;vertical-align:middle}.intro{font-size:17px;line-height:1.8;max-width:470px;color:var(--muted);margin-bottom:30px}.hero-actions{display:flex;align-items:center;gap:25px;flex-wrap:wrap}.text-link{font-size:13px;font-weight:600}.text-link span{margin-left:10px}.hero-note{display:flex;gap:15px;margin-top:40px;align-items:center}.hero-note p{margin:0;font-size:12px;color:var(--muted);line-height:1.7}.hero-note strong{font-weight:500;color:var(--navy)}.note-icon{border:1px solid var(--line);width:38px;height:38px;display:grid;place-items:center;font-size:22px}.hero-visual{background:#eef2ef;border-radius:180px 180px 3px 3px;min-width:0;padding-top:62px;overflow:hidden}.visual-top{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 37px}.visual-top>span{font-size:9px;letter-spacing:.13em;font-weight:600;max-width:150px}.season-switch{display:flex;background:white;padding:3px;border-radius:30px;border:1px solid #d3dddc}.season-switch button{border:0;background:transparent;font-size:11px;border-radius:30px;padding:6px 12px;color:var(--navy)}.season-switch button[aria-pressed=true]{background:var(--navy);color:white}.home-diagram{display:block;width:100%;height:auto}.duct{stroke:#a4c1cd}.airflow{stroke:#4c92bd}.visual-caption{background:#e1e8e6;display:flex;gap:20px;align-items:center;padding:24px 35px;min-height:106px}.climate-symbol{font-size:37px;color:var(--blue)}.visual-caption strong{font-size:17px;font-weight:600}.visual-caption p{font-size:12px;color:#516975;margin:4px 0 0}.hero-visual[data-season=winter] .airflow{stroke:#b65b3f}.hero-visual[data-season=winter] .duct{stroke:#d1a38d}.hero-visual[data-season=winter] .climate-symbol{color:#b65b3f}.hero-visual[data-season=winter] .visual-caption{background:#ece1d6}.service-strip{background:var(--cream);border-top:1px solid #e8e8e0;border-bottom:1px solid #e8e8e0}.service-strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);padding-top:23px;padding-bottom:23px}.service-strip .wrap>span{font-size:12px;letter-spacing:.04em;padding:0 25px;border-right:1px solid #d8ddd8;display:flex;justify-content:space-between;align-items:center}.service-strip .wrap>span:first-child{padding-left:0}.service-strip .wrap>span:last-child{border:0;padding-right:0}.service-strip .wrap>span>span{color:var(--blue);font-size:17px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:60px;margin-bottom:55px}.section-heading>p{max-width:385px;color:var(--muted);font-size:15px;margin:0 0 3px}.solution-list{border-top:1px solid var(--line)}.solution{display:grid;grid-template-columns:65px 1fr 190px;gap:30px;padding:35px 0;border-bottom:1px solid var(--line);align-items:center}.solution .number{align-self:start;font-size:12px;color:var(--blue);padding-top:5px}.solution h3{margin:0 0 12px}.solution p{color:var(--muted);font-size:14px;max-width:635px;margin-bottom:14px}.tag{font-size:11px;color:var(--blue);padding-left:15px;position:relative}.tag:before{content:"";position:absolute;left:0;top:5px;width:5px;height:5px;background:var(--blue);border-radius:100%}.solution svg{width:180px;fill:#f3f6f4;stroke:#657d89;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}.approach{background:var(--navy);color:white}.approach .eyebrow{color:#a9c6de}.approach .section-heading>p{color:#bed0d8}.steps{padding:0;margin:0;list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:30px}.steps li{border-top:1px solid #526878;padding-top:21px}.steps span{font-size:12px;color:#a9c6de}.steps h3{margin:28px 0 15px;font-size:22px}.steps p{font-size:13px;color:#bed0d8;line-height:1.85;margin:0}.contact{display:grid;grid-template-columns:.88fr 1.12fr;gap:90px}.contact-copy>p:not(.eyebrow){max-width:350px;color:var(--muted);font-size:15px}.contact-copy h2{margin-bottom:26px}.phone{font-size:clamp(24px,2.6vw,34px);letter-spacing:-.035em;display:block;margin:34px 0 6px;line-height:1.3}.phone span{color:var(--blue);font-size:26px;margin-left:12px}.email{font-size:14px;color:var(--blue)}address{font-size:14px;font-style:normal;line-height:1.9;margin-top:37px}address strong{font-size:12px;letter-spacing:.09em}.contact-copy .area-note{font-size:12px!important;margin-top:20px}.quote-form{background:var(--cream);padding:34px}.quote-form h3{font-size:23px;margin-bottom:12px}.form-intro{font-size:12px;color:var(--muted);margin-bottom:26px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:17px}label{display:flex;flex-direction:column;position:relative;font-size:12px;gap:7px;margin-bottom:18px;font-weight:600}label>span{display:none}input,textarea,select{min-width:0;width:100%;border:1px solid #d0d7d7;background:#fff;color:var(--navy);padding:11px 12px;border-radius:0;font-size:13px;font-weight:400}input::placeholder,textarea::placeholder{color:#75828b}textarea{resize:vertical;min-height:100px}.privacy-note{font-size:10px;color:#5b6d76;line-height:1.7}.quote-form>.button{width:100%;font-size:13px}.email-result{border-top:1px solid #cad3d3;margin-top:22px;padding-top:18px;font-size:12px}.email-result p{margin-bottom:10px}.result-actions{display:flex;flex-wrap:wrap;gap:15px;align-items:center}.result-actions button{background:transparent;border:1px solid #bdc9cf;padding:7px 10px;font-size:12px;color:var(--navy)}.email-result details{margin-top:15px}.email-result summary{cursor:pointer}.email-result pre{white-space:pre-wrap;overflow-wrap:anywhere;font:inherit;background:#fff;padding:15px}.faq{display:grid;grid-template-columns:.88fr 1.12fr;gap:90px;padding-bottom:100px}.faq h2{font-size:34px}.questions details{border-top:1px solid var(--line);padding:20px 0}.questions details:last-child{border-bottom:1px solid var(--line)}.questions summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:25px;font-size:14px;font-weight:600;line-height:1.6}.questions summary::-webkit-details-marker{display:none}.questions summary span{font-size:21px;color:var(--blue)}.questions details[open] summary span{transform:rotate(45deg)}.questions p{color:var(--muted);font-size:13px;line-height:1.8;margin:15px 25px 0 0}footer{background:#ecf0ee}.footer-main{display:flex;justify-content:space-between;gap:30px;align-items:center;padding-top:40px;padding-bottom:30px}.footer-main strong{font-size:21px;letter-spacing:.04em}.footer-main p{font-size:12px;color:var(--muted);margin:10px 0}.footer-main>a{font-size:20px;letter-spacing:-.03em}.footer-main>a span{margin-left:20px}.footer-bottom{border-top:1px solid #d0dad8;padding-top:20px;padding-bottom:20px;display:flex;justify-content:space-between;gap:20px;font-size:10px;color:#51636f}.footer-bottom button{border:0;background:none;color:inherit;font-size:inherit;padding:0;text-decoration:underline;text-underline-offset:3px}dialog{max-width:600px;width:calc(100% - 35px);border:0;padding:45px;color:var(--navy);box-shadow:0 30px 100px #17344b44}dialog::backdrop{background:#102b43b0}dialog h2{font-size:36px;margin-bottom:22px}dialog h3{font-size:20px;margin-top:28px}dialog p{font-size:14px}.dialog-close{position:absolute;top:10px;right:16px;background:transparent;border:0;font-size:30px;color:var(--navy)}.skip{position:absolute;left:10px;top:-100px;background:white;padding:12px;z-index:100}.skip:focus{top:10px}
@media(min-width:1600px){.wrap{width:1280px}.hero{gap:85px}}
@media(max-width:1100px){.wrap{width:calc(100% - 64px)}.header{padding:18px 32px}.topbar{padding-left:32px;padding-right:32px}.brand{font-size:16px}.brand img{width:120px}nav{gap:20px}.hero{gap:30px}.hero-actions{gap:20px}.hero-visual{padding-top:50px}.visual-top{padding:0 30px}.visual-caption{padding:22px}.contact,.faq{gap:45px}.section-heading{gap:40px}.steps{gap:22px}}
@media(max-width:800px){.topbar>span{font-size:9px;letter-spacing:.04em}.topbar a{font-size:11px}.brand small{font-size:10px}.brand img{width:112px}.menu-toggle{display:flex;flex-shrink:0;align-items:center;gap:12px;background:none;border:1px solid var(--line);padding:9px 13px;font-size:12px;color:var(--navy)}.header{position:relative}.header nav{display:none;position:absolute;left:24px;right:24px;top:100%;padding:23px;background:white;box-shadow:0 15px 30px #17344b15;z-index:10;align-items:stretch}.header nav.open{display:flex;flex-direction:column}.hero{grid-template-columns:1fr;gap:40px;padding-top:35px;padding-bottom:45px}.hero-copy{max-width:560px}h1{font-size:66px}.intro{max-width:540px}.hero-note{margin-top:26px}.hero-visual{max-width:600px;width:100%;justify-self:center;border-radius:160px 160px 3px 3px}.visual-top{padding:0 60px}.home-diagram{max-height:450px}.visual-caption{padding:22px 35px}.service-strip .wrap{grid-template-columns:1fr 1fr;gap:18px 0;padding:24px 0}.service-strip .wrap>span{padding:0 20px}.service-strip .wrap>span:nth-child(odd){padding-left:0}.service-strip .wrap>span:nth-child(even){border:0;padding-right:0}.section{padding-top:65px;padding-bottom:65px}.section-heading{align-items:flex-start;flex-direction:column;gap:24px;margin-bottom:35px}.section-heading>p{max-width:600px}.solution{grid-template-columns:32px 1fr 110px;gap:15px}.solution svg{width:110px}.solution p{font-size:13px}.solution h3{font-size:23px}.steps{grid-template-columns:1fr 1fr;gap:35px}.contact,.faq{grid-template-columns:1fr;gap:40px}.contact-copy>p:not(.eyebrow){max-width:520px}.contact-copy h2 br{display:none}.faq{padding-bottom:65px}.faq h2 br{display:none}.footer-main>a{font-size:16px}.eyebrow{margin-bottom:20px}.quote-form{padding:30px}}
@media(max-width:480px){.wrap{width:calc(100% - 40px)}.topbar{padding:9px 20px}.topbar>span{font-size:8px;max-width:140px;line-height:1.5}.topbar a span{margin-left:4px}.header{padding:16px 20px}.brand{gap:10px;font-size:14px}.brand img{width:96px}.brand small{font-size:9px}.hero{padding-top:30px}h1{font-size:54px;margin-bottom:23px}.eyebrow{font-size:9px;letter-spacing:.12em}.intro{font-size:15px}.hero-actions{gap:20px}.button{font-size:13px;padding:15px 19px}.hero-visual{border-radius:115px 115px 3px 3px;padding-top:42px}.visual-top{padding:0 22px}.visual-top>span{font-size:8px;max-width:100px}.season-switch button{padding:5px 10px}.visual-caption{padding:20px;gap:13px;min-height:100px}.visual-caption strong{font-size:15px}.visual-caption p{font-size:11px}.climate-symbol{font-size:30px}.service-strip .wrap>span{font-size:11px}.solution{grid-template-columns:23px 1fr;padding:28px 0}.solution svg{display:none}.solution h3{font-size:21px}.tag{font-size:10px}.steps{gap:27px 20px}.steps h3{font-size:20px;margin-top:20px}.steps p{font-size:12px}.form-row{grid-template-columns:1fr;gap:0}.quote-form{padding:24px 20px}.quote-form h3{font-size:22px}.phone{font-size:29px}.footer-main{flex-direction:column;align-items:flex-start;gap:12px}.footer-bottom{flex-wrap:wrap;gap:14px}.footer-bottom span{width:100%}.faq h2{font-size:30px}.questions summary{font-size:13px}.result-actions{align-items:flex-start;flex-direction:column}dialog{padding:32px 24px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Photos des réalisations et des chantiers en cours. */
.realisations{padding-bottom:40px}.realisations figure{margin:0}.finished-projects{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;align-items:start}.photo-open{position:relative;display:block;padding:0;border:0;width:100%;overflow:hidden;background:#e7ebe6;color:white;text-align:left}.photo-open img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .3s}.photo-open:hover img{transform:scale(1.025)}.photo-open:focus-visible{outline-offset:5px}.photo-zoom{position:absolute;bottom:14px;right:14px;background:#17344bed;padding:6px 11px;font-size:11px;letter-spacing:.015em}.photo-sejour{aspect-ratio:4/5}.photo-sejour img{object-position:center 18%}.project-feature figcaption{padding:24px 0 0}.project-label{display:block;font-size:10px;font-weight:700;letter-spacing:.12em;color:var(--blue);line-height:1.5;margin-bottom:12px}.realisations h3{font-size:26px;margin-bottom:13px}.realisations figcaption p,.project-pair p{font-size:14px;color:var(--muted);margin:0;line-height:1.8}.project-pair{background:var(--cream);padding:30px}.project-pair-heading p{margin-bottom:25px}.project-pair-photos{display:grid;grid-template-columns:1fr 1fr;gap:16px}.project-pair-photos .photo-open{aspect-ratio:3/4}.project-pair-photos figcaption{font-size:12px;color:var(--muted);padding-top:10px}.project-pair .project-footnote{font-size:12px;line-height:1.7;margin-top:22px}.work-heading{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:end;padding-top:65px;margin-top:55px;border-top:1px solid var(--line);margin-bottom:30px}.work-heading .eyebrow{margin-bottom:17px}.work-heading h3{font-size:33px;margin:0}.work-heading>p{color:var(--muted);font-size:14px;margin:0;max-width:420px}.work-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px}.work-grid .photo-open{aspect-ratio:4/3}.photo-regulation img{object-position:center 66%}.work-grid figcaption{padding-top:24px}.work-grid h3{font-size:24px}.gallery-instagram{display:inline-block;margin-top:32px}.maintenance-photo{aspect-ratio:4/5}.maintenance-photo img{object-position:center}.photo-dialog{max-width:1120px;width:calc(100% - 32px);padding:54px 20px 18px;background:#f5f4ee}.photo-dialog figure{margin:0}.photo-dialog img{display:block;max-width:100%;max-height:calc(88dvh - 120px);width:auto;height:auto;object-fit:contain;margin:0 auto}.photo-dialog figcaption{text-align:center;font-size:13px;line-height:1.5;margin:14px auto 0;max-width:750px;color:var(--navy)}.photo-close{position:absolute;top:12px;right:18px;display:flex;align-items:center;gap:14px;border:0;background:none;color:var(--navy);font-size:13px;padding:2px 4px}.photo-close span{font-size:25px;line-height:1}.header nav{gap:24px}
@media(min-width:801px) and (max-width:1050px){.header nav{gap:14px}.header nav>.button{padding:11px 12px;gap:12px}.header .brand>span{font-size:14px}.header .brand{gap:12px}}
@media(max-width:800px){.finished-projects{grid-template-columns:1fr;gap:32px}.photo-sejour{aspect-ratio:5/4;max-height:560px}.photo-sejour img{object-position:center 25%}.project-pair{padding:25px}.project-pair-photos .photo-open{aspect-ratio:4/5}.work-heading{gap:25px;grid-template-columns:1fr;padding-top:45px;margin-top:40px}.work-heading>p{max-width:550px}.work-grid{gap:24px}.work-grid h3{font-size:21px}.realisations figcaption p{font-size:13px}.maintenance-photo .photo-zoom{font-size:10px;right:8px;bottom:8px;padding:4px 7px}}
@media(max-width:480px){.realisations{padding-bottom:10px}.realisations h3{font-size:23px}.project-pair{padding:20px}.project-pair-photos{gap:12px}.project-pair-photos .photo-zoom{font-size:9px;bottom:7px;right:7px;padding:4px 7px}.project-pair-photos figcaption{font-size:11px}.work-heading h3{font-size:28px}.work-grid{grid-template-columns:1fr;gap:34px}.work-grid figcaption{padding-top:20px}.maintenance-photo{grid-column:2;max-width:260px;aspect-ratio:5/4;margin-top:4px}.maintenance-photo .photo-zoom{font-size:11px;bottom:12px;right:12px;padding:6px 9px}.photo-dialog{padding:54px 12px 18px}.photo-dialog figcaption{font-size:12px}}

/* Quatre vues complémentaires extraites des vidéos de réalisations. */
.additional-projects{margin-top:54px}.additional-heading{margin-bottom:26px}.additional-heading .eyebrow{margin-bottom:15px}.additional-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}.additional-grid .photo-open{aspect-ratio:3/5}.additional-grid .photo-open img{object-position:center}.additional-grid figcaption{padding-top:20px}.additional-grid h3{font-size:21px;line-height:1.2}.additional-grid figcaption p{font-size:13px}.stills-caption{font-size:11px;color:var(--muted);margin:22px 0 0}.additional-projects+.work-heading{margin-top:40px}
@media(max-width:1000px){.additional-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px}.additional-grid .photo-open{aspect-ratio:3/4}.additional-grid .photo-open img{object-position:center 35%}}
@media(max-width:480px){.additional-projects{margin-top:38px}.additional-grid{gap:26px 16px}.additional-grid .photo-open{aspect-ratio:3/5}.additional-grid h3{font-size:18px}.additional-grid figcaption p{font-size:12px;line-height:1.7}.additional-grid .photo-zoom{font-size:9px;bottom:8px;right:8px;padding:4px 7px}.additional-grid figcaption{padding-top:15px}}

/* Présentation des marques installées, sans logos. */
.brands{display:grid;grid-template-columns:1.5fr 1fr;gap:48px;align-items:center;padding-top:38px;padding-bottom:38px;border-bottom:1px solid var(--line);scroll-margin-top:24px}
.brands h2{margin:0;font-family:inherit;letter-spacing:0;line-height:1.5}
.brands h2 span{display:block;font-size:15px;font-weight:400;color:var(--muted)}
.brands h2 strong{display:block;margin-top:5px;font-size:clamp(25px,3vw,34px);font-weight:650;letter-spacing:-.025em;color:var(--navy);line-height:1.2}
.brands>p{max-width:320px;margin:0;padding-left:28px;border-left:1px solid var(--line);font-size:15px;line-height:1.8;color:var(--muted)}
.brands>p strong{font-weight:600;color:var(--navy)}
@media(max-width:700px){.brands{grid-template-columns:1fr;gap:20px;padding-top:30px;padding-bottom:30px}.brands>p{max-width:none;padding-left:0;border-left:0;font-size:14px}.brands h2 span{font-size:14px}}