@font-face{font-family:Manrope;font-style:normal;font-weight:500;font-display:swap;src:url("assets/manrope-latin-500-normal.woff2") format("woff2")}
/* ECO Génie Civil — refonte contemporaine */
:root{--ink:#173a2f;--forest:#102b23;--forest-deep:#0b211b;--paper:#f6f7f3;--muted:#596960;--gold:#d9be81;--line:#dce2da;--gutter:clamp(24px,6.5vw,112px);--header-height:86px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 20px)}
body{margin:0;background:var(--paper);color:var(--ink);font:1rem/1.65 Arial,Helvetica,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit}button{font:inherit}img{display:block;max-width:100%}p{margin:0 0 1.25rem}h1,h2,h3{margin-top:0}::selection{background:var(--gold);color:var(--forest)}
a,button{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:3px solid #ad8740;outline-offset:6px}main:focus{outline:none}.skip-link{position:fixed;top:10px;left:15px;z-index:100;padding:12px 20px;background:#fff;transform:translateY(-150%)}.skip-link:focus{transform:translateY(0)}
.reading-progress{position:fixed;inset:0 auto auto 0;height:3px;width:100%;transform:scaleX(0);transform-origin:left;background:#b49246;z-index:50;pointer-events:none}
.site-header{min-height:var(--header-height);display:flex;justify-content:space-between;align-items:center;gap:24px;padding:12px 4.5vw;position:sticky;top:0;z-index:20;background:#f6f7f3f5;border-bottom:1px solid #dce2da;backdrop-filter:blur(16px)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0}.brand img{width:60px;height:50px;object-fit:contain}.brand span{display:flex;flex-direction:column;line-height:1.4}.brand b{font-size:14px;letter-spacing:.07em}.brand small{font-size:12px;letter-spacing:.045em;color:var(--muted);margin-top:4px}
nav{display:flex;align-items:center;gap:clamp(20px,2.3vw,36px)}nav a{font-size:14px;padding:10px 0;text-decoration:none;position:relative;transition:color .2s}nav a:not(.nav-contact)::after{content:'';position:absolute;bottom:5px;left:0;width:100%;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .25s}nav a:hover::after,nav a[aria-current="location"]::after{transform:scaleX(1)}nav .nav-contact{padding:11px 25px;border-radius:30px;background:var(--forest);color:#fff}nav .nav-contact:hover{background:#2b5041}.menu{display:none}
.hero{background:var(--forest-deep);color:#fff;position:relative;overflow:hidden}.hero-main{display:grid;grid-template-columns:1.08fr 1fr;min-height:490px}.hero-content{padding:46px 35px 44px var(--gutter);position:relative;z-index:2;background-image:linear-gradient(#ffffff03 1px,transparent 1px),linear-gradient(90deg,#ffffff03 1px,transparent 1px);background-size:60px 60px}
.kicker,.label{font-size:12px;line-height:1.5;letter-spacing:.15em;font-weight:600}.kicker{color:#d8d9ca;display:flex;gap:14px;align-items:center;margin-bottom:26px}.kicker>span{width:28px;height:1px;background:var(--gold)}.hero h1{font-family:Manrope,"Segoe UI",Arial,sans-serif;font-size:clamp(42px,4.6vw,68px);font-weight:500;line-height:1.14;letter-spacing:-.045em;margin:0 0 24px}.hero h1 em{font-family:inherit;font-style:normal;font-weight:500;color:var(--gold);letter-spacing:inherit}.lead{font-size:16px;line-height:1.85;color:#d2ddd6;max-width:570px;margin:0}
.button{display:inline-flex;justify-content:center;align-items:center;min-height:48px;border-radius:30px;padding:13px 25px;font-size:14px;font-weight:600;text-decoration:none;border:1px solid transparent;transition:background .25s,color .25s,transform .25s}.button-gold{background:var(--gold);color:var(--forest-deep);margin-top:30px}.button-gold:hover{background:#ebd7a8;transform:translateY(-2px)}
.hero-visual{position:relative;overflow:hidden;min-width:0;margin:26px 26px 26px 0;border-radius:3px}.hero-visual img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover;object-position:center;animation:hero-image 1.2s ease-out both}.hero-visual::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,#091b15b0)}.visual-corner{position:absolute;z-index:1;left:28px;top:28px;width:45px;height:45px;border-left:1px solid #fff9;border-top:1px solid #fff9}.visual-caption{position:absolute;bottom:30px;left:30px;right:20px;z-index:1;margin:0;font-size:18px;font-weight:500}.visual-caption span{display:block;font-size:12px;letter-spacing:.14em;color:#ecdec0;margin-bottom:5px}
.hero-foot{padding:27px var(--gutter);border-top:1px solid #ffffff23;display:grid;grid-template-columns:1fr 1.3fr 1fr;gap:28px;background:#112c23}.hero-foot>div{display:flex;flex-direction:column;gap:3px}.hero-foot>div+div{border-left:1px solid #ffffff29;padding-left:34px}.hero-foot b{font-size:18px;font-weight:500;letter-spacing:-.02em}.hero-foot span{font-size:13px;color:#bccdc1}
.section-space{padding:100px var(--gutter)}.section-grid{display:grid;grid-template-columns:1fr 2.25fr;gap:60px}.section-grid>.label{padding-top:9px;margin:0;align-self:start;display:flex;align-items:center;gap:14px}.section-grid>.label::before{content:'';height:1px;width:28px;background:#94a99b}.label{color:#5d7264}h2{font-size:clamp(34px,3.6vw,54px);font-weight:500;line-height:1.13;letter-spacing:-.04em;margin-bottom:28px}.bureau h2{max-width:760px}.bureau p:not(.label){color:var(--muted);max-width:800px}.bureau .big{font-size:20px;line-height:1.65}.bureau strong{font-weight:400;color:var(--ink)}.bureau .territory{font-size:14px;color:var(--ink)!important;margin-top:28px;margin-bottom:0;padding-top:24px;border-top:1px solid var(--line)}
.signature-band{display:flex;align-items:center;justify-content:center;gap:clamp(20px,5vw,80px);padding:26px var(--gutter);border-block:1px solid var(--line);color:#547162}.signature-band span{font-size:clamp(19px,3.3vw,46px);font-weight:400;letter-spacing:-.04em}.signature-band i{font:300 clamp(24px,3.4vw,46px)/1 Georgia,serif;color:#acbcb0}
.expertises{background:#edf1eb}.section-head{margin-bottom:32px}.section-head h2{max-width:660px;margin-bottom:0}.expertise-list{display:grid;grid-template-columns:1fr 1fr;gap:18px}.expertise-card{background:#fafbf8;border:1px solid #dae1d6;border-radius:4px;padding:30px 34px 36px;transition:transform .3s,border-color .3s,box-shadow .3s;position:relative;overflow:hidden}.expertise-card::before{content:'';position:absolute;top:0;left:0;width:3px;height:100%;background:#9d824b;transform:scaleY(0);transform-origin:bottom;transition:transform .3s}.card-motif{display:block;width:36px;height:36px;margin-bottom:23px;color:#657e6d}.card-motif svg{width:100%;height:100%}.motif-accent{stroke:#ae8d4f}.expertise-card h3{font-size:25px;line-height:1.25;font-weight:500;letter-spacing:-.025em;margin-bottom:15px;max-width:420px}.expertise-card p{font-size:16px;line-height:1.7;color:var(--muted);max-width:500px;margin:0}@media(hover:hover){.expertise-card:hover{transform:translateY(-4px);box-shadow:0 14px 35px #173a2f0b;border-color:#adc0ad}.expertise-card:hover::before{transform:scaleY(1)}}
.split-visual{display:grid;grid-template-columns:.9fr 1.1fr;background:var(--forest);color:#fff;padding:72px var(--gutter);gap:clamp(36px,6vw,90px);align-items:stretch}.approach-image{position:relative;min-height:620px;overflow:hidden;border-radius:3px}.approach-image img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:grayscale(1);opacity:.94}.approach{padding:8px 0}.approach .label,.plans-tech .label{color:var(--gold)}.approach h2{font-size:clamp(33px,3.1vw,46px);line-height:1.17;margin-bottom:35px}.approach h2 em{font-family:Georgia,serif;font-weight:400;color:#dfc994;letter-spacing:-.03em}.steps{margin:0}.steps>div{display:grid;grid-template-columns:160px minmax(0,1fr);gap:20px;padding:19px 0;border-top:1px solid #ffffff28}.steps dt{font-size:18px;font-weight:500}.steps dd{font-size:15px;line-height:1.65;color:#c4d2c7;margin:0}
.plans-tech{background:var(--forest-deep);color:#fff}.plans-intro{align-items:center}.plans-visual .label{display:flex;gap:14px;align-items:center;margin:0 0 25px}.plans-visual .label::before{content:"";width:28px;height:1px;background:#85764b}.plans-reference{margin:0;overflow:hidden;border-radius:3px}.plans-reference img{width:100%;height:auto;aspect-ratio:1.55;object-fit:cover}.plans-intro p:not(.label){max-width:770px;color:#c4d2c7;margin:0}.plans-intro>.label::before{background:#85764b}.plans-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:45px}.plans-grid figure{background:#fff;border-radius:3px;margin:0;padding:18px}.plans-grid img{width:100%;height:auto;aspect-ratio:1.79;object-fit:contain}
.projects{background:#f8f9f5}.projects-head p:not(.label){color:var(--muted);max-width:740px;margin:0}.project-grid{display:grid;grid-template-columns:1.14fr 1fr;gap:36px 26px;margin-top:48px;align-items:start}.project-card{margin:0;min-width:0}.project-card:nth-child(even){transform:translateY(60px)}.project-card img{width:100%;height:auto;aspect-ratio:1.48;object-fit:cover;border-radius:3px;transition:filter .4s}.project-card figcaption{display:flex;align-items:center;justify-content:space-between;padding:17px 0;border-bottom:1px solid #cfd9cc;font-size:16px;font-weight:500;letter-spacing:-.02em}.project-card figcaption::after{content:'';display:block;width:22px;height:1px;background:#90a18f}.project-grid{padding-bottom:60px}.project-card.technical img{filter:grayscale(1)}@media(hover:hover){.project-card:hover img{filter:brightness(1.045)}.project-card.technical:hover img{filter:grayscale(1) brightness(1.045)}}
.contact{background:#e9eee7;border-top:1px solid #dae2d6;display:grid;grid-template-columns:1.18fr 1fr;gap:clamp(40px,8vw,130px);align-items:center}.contact h2.label{font-family:Arial,Helvetica,sans-serif;font-size:12px;font-weight:600;line-height:1.5;letter-spacing:.15em;margin-bottom:26px}.contact-intro{font-size:clamp(18px,1.6vw,22px);line-height:1.6;letter-spacing:-.015em;max-width:650px;color:var(--ink);margin-bottom:23px}.mail{display:inline-block;font-size:clamp(18px,1.85vw,28px);font-weight:500;letter-spacing:-.025em;line-height:1.6;padding-bottom:4px;text-decoration:none;border-bottom:1px solid #839b84;overflow-wrap:anywhere;transition:color .2s,border-color .2s}.mail:hover{color:#6e5725;border-color:#6e5725}.contact-location{border:1px solid #cdd8c8;background:#f6f8f2;border-radius:5px;padding:34px}.location-top{display:flex;align-items:center;gap:14px;margin-bottom:28px}.pin-icon{display:flex;align-items:center;justify-content:center;width:43px;height:43px;border-radius:50%;border:1px solid #c9d3c2;color:#54735b}.pin-icon svg{width:21px;height:21px}.location-top .label{margin:0}.location-city{font-size:34px;font-weight:500;letter-spacing:-.04em;line-height:1.2;margin-bottom:24px}.location-city span{display:block;color:#667a68;font-size:14px;letter-spacing:0;font-weight:400;margin-top:9px}address{font-style:normal;font-size:16px;color:#536b58;line-height:1.8}.button-outline{border-color:#728c70;background:transparent;color:var(--ink);margin-top:28px}.button-outline:hover{background:var(--forest);border-color:var(--forest);color:#fff}
footer{display:flex;justify-content:space-between;align-items:center;gap:18px;background:var(--forest-deep);color:#becdbf;padding:30px var(--gutter);font-size:12px;letter-spacing:.04em}
/* Les contenus restent accessibles sans JavaScript */
.reveal.is-pending{opacity:0;transform:translateY(22px)}.reveal{transition:opacity .6s ease,transform .6s cubic-bezier(.2,.65,.3,1)}.project-card:nth-child(even).is-pending{transform:translateY(82px)}.hero-content>*{animation:hero-copy .7s ease-out both}.hero-content h1{animation-delay:.08s}.hero-content .lead{animation-delay:.16s}.hero-content .button{animation-delay:.22s}@keyframes hero-copy{from{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}@keyframes hero-image{from{transform:scale(1.045)}to{transform:scale(1)}}
@media(min-width:1700px){:root{--gutter:max(112px,calc((100vw - 1460px)/2))}.hero h1{font-size:72px}.hero-content{padding-top:52px;padding-bottom:50px}.hero-visual{margin-right:var(--gutter)}}
@media(max-width:1150px){.hero-main{grid-template-columns:1.15fr 1fr}.hero h1{font-size:clamp(41px,5.1vw,58px)}.hero-content{padding-top:46px;padding-bottom:44px}.lead{font-size:15px}.section-grid{grid-template-columns:.8fr 2fr;gap:40px}.split-visual{gap:38px;padding-block:65px}.steps>div{grid-template-columns:1fr;gap:7px}.approach-image{min-height:610px}.contact{gap:40px}.contact-location{padding:28px}}
@media(max-width:960px){:root{--header-height:78px}.site-header{flex-wrap:wrap;row-gap:0;column-gap:14px;padding-block:11px}.brand img{width:55px;height:46px}.brand b{font-size:13px}.brand small{font-size:12px;letter-spacing:0}.menu{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;min-width:44px;padding:8px;color:var(--ink);border:1px solid #bac8b9;border-radius:50%;background:transparent;cursor:pointer}.menu-text{display:none}.menu-icon{display:flex;flex-direction:column;justify-content:center;gap:5px;width:17px;height:18px}.menu-icon i{display:block;width:17px;height:1px;background:currentColor;transition:transform .2s}.menu[aria-expanded="true"] .menu-icon i:first-child{transform:translateY(3px) rotate(45deg)}.menu[aria-expanded="true"] .menu-icon i:last-child{transform:translateY(-3px) rotate(-45deg)}nav{width:100%;flex-direction:column;align-items:stretch;gap:0;padding-top:12px}.js-ready nav{display:none;position:absolute;top:100%;left:0;padding:12px 5vw 22px;background:#f6f7f3;border-bottom:1px solid #bac8b9;box-shadow:0 16px 24px #0e1b1512;max-height:calc(100dvh - var(--header-height));overflow-y:auto}.js-ready nav.open{display:flex}nav a{padding:12px 4px;min-height:48px;font-size:16px}nav a:not(.nav-contact)::after{display:none}nav .nav-contact{margin-top:8px;text-align:center;padding:11px 15px}.hero-main{grid-template-columns:1.15fr .85fr;min-height:450px}.hero-content{padding-top:42px;padding-right:24px;padding-bottom:40px}.hero h1{font-size:clamp(39px,5.4vw,51px)}.hero .lead br{display:none}.hero-visual{margin:20px 20px 20px 0}.visual-caption{font-size:15px;left:22px;bottom:23px}.visual-caption span{font-size:12px}.hero-foot{padding-block:24px;gap:18px}.hero-foot b{font-size:16px}.hero-foot>div+div{padding-left:22px}.section-space{padding-block:76px}.section-grid{grid-template-columns:1fr;gap:24px}.section-grid>.label{padding-top:0}.expertise-card{padding:25px}.card-motif{margin-bottom:22px}.expertise-card h3{font-size:23px}.split-visual{grid-template-columns:.8fr 1.2fr}.approach h2{font-size:34px}.approach-image{min-height:630px}.contact{grid-template-columns:1fr 1fr;gap:32px}.contact-intro{font-size:19px}.mail{font-size:20px}.contact-location{padding:25px}.location-city{font-size:30px}}
@media(max-width:700px){.hero-main{grid-template-columns:1fr}.hero-content{padding:40px var(--gutter) 34px}.hero h1{font-size:clamp(37px,8.5vw,56px);line-height:1.14}.hero .lead{font-size:16px;max-width:450px}.hero-visual{height:235px;min-height:0;margin:0 var(--gutter) 28px}.hero-visual img{object-position:center 65%}.visual-corner{top:20px;left:20px;width:28px;height:28px}.visual-caption{left:22px;bottom:20px;font-size:16px}.hero-foot{grid-template-columns:1fr 1.25fr;gap:18px}.hero-foot>div:last-child{display:none}.hero-foot>div+div{padding-left:20px}.hero-foot b{font-size:16px}.hero-foot span{font-size:12px}.signature-band{gap:20px;padding-block:23px}.signature-band span{font-size:25px}.signature-band i{font-size:26px}.expertise-list{grid-template-columns:1fr}.expertise-card{padding:26px 28px 30px}.card-motif{margin-bottom:20px}.expertise-card h3{font-size:25px}.split-visual{grid-template-columns:1fr;padding:60px var(--gutter);gap:36px}.approach-image{min-height:310px;max-height:400px}.approach h2{font-size:38px}.steps>div{grid-template-columns:150px minmax(0,1fr);gap:18px}.steps dt{font-size:18px}.steps dd{font-size:15px}.plans-grid{grid-template-columns:1fr;gap:18px}.plans-grid figure{padding:12px}.project-grid{grid-template-columns:1fr;gap:28px;padding-bottom:0}.project-card:nth-child(even){transform:none}.project-card:nth-child(even).is-pending{transform:translateY(22px)}.project-card img{aspect-ratio:1.5}.contact{grid-template-columns:1fr;gap:38px}.contact-copy{max-width:570px}.contact-intro{font-size:20px}.mail{font-size:23px}.contact-location{padding:30px}.contact-location .button{width:100%}footer{align-items:flex-start;flex-direction:column;gap:6px}}
@media(max-width:400px){:root{--gutter:23px}.site-header{padding-inline:17px}.brand{gap:8px}.brand img{width:43px;height:42px}.brand b{font-size:12px}.brand small{font-size:12px}.hero h1{font-size:clamp(32px,9.6vw,38px)}.hero-content{padding-top:36px}.hero .kicker{font-size:11px;letter-spacing:.12em}.hero-visual{height:210px}.hero-foot{gap:15px}.hero-foot>div+div{padding-left:15px}.hero-foot b{font-size:15px}.section-space{padding-block:60px}h2{font-size:33px}.signature-band{gap:10px;padding-inline:15px}.signature-band span{font-size:19px}.signature-band i{font-size:19px}.bureau .big{font-size:18px}.expertise-card{padding:24px}.expertise-card h3{font-size:24px}.approach h2{font-size:33px}.steps>div{grid-template-columns:1fr;gap:8px}.approach-image{min-height:265px}.contact-intro{font-size:19px}.mail{font-size:clamp(18px,5.4vw,21px)}.contact-location{padding:25px}.location-city{font-size:32px}.project-card figcaption{font-size:15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}.reveal.is-pending{opacity:1;transform:none}.project-card:nth-child(even).is-pending{transform:translateY(60px)}}
@media(prefers-reduced-motion:reduce) and (max-width:700px){.project-card:nth-child(even).is-pending{transform:none}}

.visual-caption small{display:block;font-size:12px;font-weight:400;letter-spacing:.03em;margin-top:6px;color:#e6eade}