:root{--blue:#1556b8;--blue2:#0d3e88;--ink:#111820;--muted:#5d6978;--pale:#eaf1fb;--line:#e5eaf0;--white:#fff;--radius:22px;--shadow:0 18px 60px #102d5014}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:'DM Sans',sans-serif;background:#fff}h1,h2,h3,.brand{font-family:Manrope,sans-serif}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}img{display:block;max-width:100%}.wrap{width:min(1180px,calc(100% - 48px));margin:auto}.topline{background:#f5f8fc;font-size:12px;color:#506074}.topline .wrap{height:36px;display:flex;align-items:center;justify-content:space-between}.topline a{margin-left:16px}.topline a:hover{color:var(--blue)}.nav{position:sticky;top:0;z-index:20;background:#ffffffed;backdrop-filter:blur(14px);border-bottom:1px solid #edf0f4}.navin{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;gap:10px;align-items:center;font-size:18px;font-weight:800;letter-spacing:-.6px}.mark{width:40px;height:40px;border-radius:13px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:21px;font-weight:800}.brand small{display:block;font:600 9px 'DM Sans';letter-spacing:1.25px;color:var(--muted);margin-top:2px}.links{display:flex;align-items:center;gap:26px;font-size:13px;font-weight:600}.links a:hover{color:var(--blue)}.nav-actions{display:flex;gap:10px;align-items:center}.lang{border:0;background:none;font-size:12px;font-weight:700;color:var(--blue)}.btn{border:0;border-radius:999px;padding:13px 20px;background:var(--blue);color:#fff;font-weight:700;font-size:13px;display:inline-flex;align-items:center;gap:9px;transition:.2s;box-shadow:0 7px 18px #1556b82b}.btn:hover{background:var(--blue2);transform:translateY(-2px)}.btn.light{background:#fff;color:var(--blue);box-shadow:none}.btn.outline{background:transparent;border:1px solid #ffffff8a;box-shadow:none}.hamb{display:none;border:0;background:none;font-size:24px}.hero{position:relative;min-height:620px;overflow:hidden;display:flex;align-items:center;background:#101a25}.heroimg{position:absolute;inset:0;background:linear-gradient(90deg,#081421e8 0%,#081421a6 52%,#08142130 100%),url('https://images.unsplash.com/photo-1511497584788-876760111969?auto=format&fit=crop&w=2000&q=85') center 48%/cover;transform:scale(1.02)}.hero .wrap{position:relative;color:#fff;padding:92px 0}.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:2px;font-weight:800;color:#a9c9ff;display:flex;align-items:center;gap:10px}.eyebrow:before{content:'';width:26px;height:2px;background:currentColor}.hero h1{font-size:clamp(42px,6vw,76px);line-height:1.03;letter-spacing:-3.8px;max-width:710px;margin:24px 0 19px}.hero h1 span{color:#90baff}.hero p{font-size:17px;line-height:1.7;max-width:570px;color:#e1e8f2;margin:0 0 30px}.hero-buttons{display:flex;gap:12px;flex-wrap:wrap}.hero-foot{position:absolute;bottom:28px;right:max(24px,calc((100vw - 1180px)/2));color:#ffffffb5;font-size:11px;letter-spacing:.5px}.float-card{position:absolute;right:max(25px,calc((100vw - 1180px)/2));bottom:76px;width:220px;border:1px solid #ffffff50;background:#ffffffdf;color:var(--ink);backdrop-filter:blur(14px);padding:18px;border-radius:18px;box-shadow:var(--shadow)}.float-card b{font:800 26px Manrope;color:var(--blue)}.float-card span{display:block;color:var(--muted);font-size:11px;margin-top:3px}.scrollcue{display:flex;align-items:center;gap:10px;font-size:11px;color:#d7e3f5;margin-top:55px}.scrollcue i{width:32px;height:1px;background:#90baff}.stats{position:relative;margin-top:-1px;background:var(--blue);color:white}.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);padding:28px 0}.stat{padding:6px 30px;border-right:1px solid #ffffff36}.stat:first-child{padding-left:0}.stat:last-child{border:0}.stat strong{font:800 32px Manrope;letter-spacing:-1px}.stat span{display:block;font-size:12px;color:#d5e6ff;margin-top:3px}.section{padding:100px 0}.section.soft{background:#f6f8fb}.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:40px}.section-head h2{font-size:clamp(32px,4vw,48px);letter-spacing:-2px;line-height:1.1;margin:13px 0 0}.section-head p{max-width:410px;color:var(--muted);line-height:1.65;font-size:14px;margin:0}.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:75px;align-items:center}.about-image{height:490px;border-radius:var(--radius);overflow:hidden;position:relative}.about-image img{width:100%;height:100%;object-fit:cover}.image-note{position:absolute;bottom:18px;left:18px;background:white;border-radius:14px;padding:15px 19px;box-shadow:var(--shadow);font-size:12px}.image-note b{display:block;font:800 18px Manrope;color:var(--blue);margin-bottom:3px}.about-copy h2{font-size:clamp(34px,4vw,50px);letter-spacing:-2.4px;line-height:1.08;margin:17px 0}.about-copy>p{font-size:15px;color:var(--muted);line-height:1.8}.checklist{display:grid;gap:15px;margin:26px 0 30px}.check{display:flex;gap:12px;align-items:flex-start;font-size:13px;line-height:1.5}.check i{font-style:normal;width:23px;height:23px;display:grid;place-items:center;background:var(--pale);color:var(--blue);border-radius:50%;font-weight:800;flex:none}.axes{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.axis{border:1px solid var(--line);border-radius:18px;padding:25px;transition:.25s;background:#fff;min-height:190px}.axis:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#bdd1ef}.axis-icon{width:45px;height:45px;display:grid;place-items:center;background:var(--pale);color:var(--blue);font-size:20px;border-radius:14px}.axis h3{font-size:17px;margin:20px 0 8px}.axis p{font-size:12px;color:var(--muted);line-height:1.6;margin:0}.projects{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}.project-card{position:relative;overflow:hidden;border-radius:var(--radius);min-height:380px;color:white;background:#152335}.project-card img{position:absolute;width:100%;height:100%;object-fit:cover;transition:transform .6s}.project-card:hover img{transform:scale(1.05)}.project-card:after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,#09121be8,#09121b05 75%)}.project-content{position:absolute;z-index:1;bottom:0;left:0;padding:30px;max-width:560px}.tag{display:inline-block;background:#ffffff24;border:1px solid #ffffff54;border-radius:99px;padding:6px 10px;font-size:10px;text-transform:uppercase;letter-spacing:1px}.project-content h3{font-size:28px;letter-spacing:-1px;margin:12px 0 8px}.project-content p{font-size:13px;line-height:1.6;color:#e0e8f2;margin:0 0 14px;max-width:420px}.project-small{display:grid;grid-template-rows:1fr 1fr;gap:20px}.project-small .project-card{min-height:180px}.project-small .project-content{padding:22px}.project-small .project-content h3{font-size:21px;margin:9px 0 5px}.project-small .project-content p{font-size:11px}.project-controls{display:flex;gap:8px}.project-controls button{border:1px solid #dce4ee;background:white;border-radius:99px;padding:9px 15px;font-size:11px;color:#394b60}.project-controls button.active,.project-controls button:hover{background:var(--blue);color:white;border-color:var(--blue)}.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.news-card{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:white;transition:.25s}.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.news-card img{width:100%;height:200px;object-fit:cover}.news-body{padding:20px}.news-meta{font-size:10px;color:var(--blue);font-weight:800;letter-spacing:1px;text-transform:uppercase}.news-body h3{font-size:18px;line-height:1.35;margin:10px 0}.news-body p{font-size:12px;color:var(--muted);line-height:1.65;margin:0 0 17px}.text-link{color:var(--blue);font-size:12px;font-weight:800}.quote-band{background:#111b28;color:white;padding:65px 0;position:relative;overflow:hidden}.quote-band:after{content:'“';position:absolute;right:7%;top:-70px;font:300 280px Georgia;color:#ffffff0b}.quote-inner{display:flex;align-items:center;gap:30px;position:relative;z-index:1}.quote-mark{font:100px Georgia;color:#8ab6ff;line-height:.5}.quote-inner blockquote{font:600 25px/1.45 Manrope;max-width:800px;margin:0}.quote-inner cite{display:block;font:12px 'DM Sans';color:#aab7c7;margin-top:16px;font-style:normal}.partners{display:flex;align-items:center;justify-content:space-between;gap:25px;flex-wrap:wrap;padding:26px 0}.partner{font:800 15px Manrope;color:#738093;letter-spacing:-.5px}.partner small{display:block;font:600 8px 'DM Sans';letter-spacing:1.4px;margin-top:4px}.partner-label{font-size:10px;text-transform:uppercase;letter-spacing:1.5px;color:#8290a1}.cta{background:var(--blue);color:white;padding:60px;border-radius:26px;display:flex;align-items:center;justify-content:space-between;gap:30px;position:relative;overflow:hidden}.cta:after{content:'';width:360px;height:360px;border:1px solid #ffffff2b;border-radius:50%;position:absolute;right:25%;top:-260px;box-shadow:0 0 0 45px #ffffff08,0 0 0 90px #ffffff06}.cta h2{font-size:clamp(30px,4vw,43px);letter-spacing:-1.8px;margin:0 0 10px;position:relative;z-index:1}.cta p{color:#dceaff;font-size:13px;margin:0;position:relative;z-index:1}.cta .btn{position:relative;z-index:1;white-space:nowrap}.footer{background:#0d1520;color:white;padding:65px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:45px;padding-bottom:45px}.footer p,.footer a{color:#aeb9c7;font-size:12px;line-height:1.8}.footer h4{font-size:12px;margin:0 0 18px}.footer-links{display:grid;gap:8px}.foot-bottom{border-top:1px solid #ffffff1c;padding-top:18px;display:flex;justify-content:space-between;color:#8190a2;font-size:10px}.socials{display:flex;gap:9px;margin-top:20px}.socials a{width:32px;height:32px;border:1px solid #ffffff35;border-radius:50%;display:grid;place-items:center}.newsletter{display:flex;margin-top:12px}.newsletter input{min-width:0;width:100%;border:0;padding:12px;border-radius:9px 0 0 9px;font:12px 'DM Sans'}.newsletter button{border:0;background:#3778d3;color:white;padding:0 14px;border-radius:0 9px 9px 0;font-weight:700}.toast{position:fixed;z-index:60;bottom:22px;left:50%;transform:translate(-50%,120px);background:#10243c;color:white;padding:13px 20px;border-radius:99px;font-size:13px;box-shadow:var(--shadow);transition:.35s}.toast.show{transform:translate(-50%,0)}.modal{position:fixed;inset:0;z-index:50;background:#071321a8;display:none;place-items:center;padding:20px}.modal.open{display:grid}.modal-box{background:white;border-radius:22px;padding:32px;width:min(460px,100%);box-shadow:var(--shadow);position:relative}.modal-box h2{margin:0 0 8px;font-size:27px}.modal-box p{font-size:13px;line-height:1.6;color:var(--muted)}.close{position:absolute;right:18px;top:16px;border:0;background:#eff3f8;border-radius:50%;width:32px;height:32px;font-size:18px}.amounts{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:20px 0}.amounts button{border:1px solid var(--line);background:white;padding:12px;border-radius:10px;font-weight:700;color:#304158}.amounts button.selected{border-color:var(--blue);color:var(--blue);background:var(--pale)}.field{display:grid;gap:6px;margin:13px 0}.field label{font-size:11px;font-weight:700}.field input,.field select{padding:12px;border:1px solid #dce3ec;border-radius:9px;font:13px 'DM Sans';width:100%}.modal-box .btn{width:100%;justify-content:center;margin-top:10px}.mobile-menu{display:none}.reveal{opacity:0;transform:translateY(22px);transition:.65s}.reveal.visible{opacity:1;transform:none}@media(max-width:900px){.links{gap:14px}.links a{font-size:12px}.float-card{right:24px}.about-grid{gap:35px}.footer-grid{grid-template-columns:1fr 1fr}.axes{grid-template-columns:repeat(2,1fr)}}@media(max-width:700px){.wrap{width:min(100% - 34px,560px)}.topline .wrap{justify-content:center}.topline .address{display:none}.navin{height:67px}.links{display:none}.hamb{display:block}.nav-actions .btn{padding:10px 14px;font-size:11px}.mobile-menu{position:absolute;top:67px;left:0;right:0;background:white;padding:12px 20px 20px;box-shadow:var(--shadow);display:none}.mobile-menu.open{display:grid}.mobile-menu a{padding:12px;border-bottom:1px solid var(--line);font-size:14px}.hero{min-height:650px}.hero .wrap{padding:75px 0}.hero h1{font-size:48px;letter-spacing:-2.5px}.hero p{font-size:15px}.float-card{right:17px;bottom:22px;width:180px;padding:14px}.hero-foot{display:none}.scrollcue{margin-top:34px}.stats .wrap{grid-template-columns:1fr 1fr;padding:20px 0}.stat{padding:14px 12px;border-right:1px solid #ffffff36}.stat:first-child{padding-left:12px}.stat:nth-child(2){border:0}.stat strong{font-size:27px}.section{padding:70px 0}.section-head{display:block;margin-bottom:28px}.section-head p{margin-top:14px}.about-grid{grid-template-columns:1fr;gap:30px}.about-image{height:350px;order:2}.about-copy{order:1}.axes{grid-template-columns:1fr 1fr;gap:10px}.axis{padding:18px;min-height:180px}.axis h3{font-size:14px}.axis p{font-size:11px}.projects{grid-template-columns:1fr}.project-card{min-height:350px}.project-small{grid-template-rows:auto auto}.project-small .project-card{min-height:220px}.news-grid{grid-template-columns:1fr}.news-card{display:grid;grid-template-columns:38% 1fr}.news-card img{height:100%;min-height:190px}.news-body{padding:15px}.news-body h3{font-size:15px}.news-body p{font-size:11px}.quote-inner{align-items:flex-start;gap:16px}.quote-inner blockquote{font-size:19px}.quote-mark{font-size:70px}.partners{justify-content:center}.partner-label{width:100%;text-align:center}.cta{padding:35px 25px;display:block}.cta .btn{margin-top:24px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px 20px}.footer-grid>div:first-child{grid-column:span 2}.foot-bottom{gap:12px;flex-direction:column}.project-controls{flex-wrap:wrap}}@media(max-width:390px){.axes{grid-template-columns:1fr}.axis{min-height:0}.hero h1{font-size:41px}.nav-actions .lang{display:none}}


/* Pages institutionnelles */
.page-hero{background:linear-gradient(125deg,#0d2b50,#1556b8);color:white;padding:90px 0 82px}.page-hero .crumb{font-size:12px;color:#c6dcfa;margin-bottom:26px}.page-hero h1{max-width:850px;font-size:clamp(38px,5.5vw,64px);line-height:1.08;letter-spacing:-2.6px;margin:0 0 18px}.page-hero p{max-width:670px;color:#e0ecfb;font-size:16px;line-height:1.75;margin:0}.page-body{padding:76px 0 100px}.page-body h2{font-size:clamp(30px,4vw,45px);line-height:1.12;letter-spacing:-1.8px;margin:14px 0 18px}.page-body p{font-size:15px;color:var(--muted);line-height:1.85}.page-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:54px}.page-tile{border:1px solid var(--line);border-radius:18px;padding:24px;background:#fff;box-shadow:0 12px 35px #102d5009}.page-tile h3{font-size:19px;margin:16px 0 8px}.page-tile p{font-size:13px;margin:0}.axis-icon{width:42px;height:42px;border-radius:13px;background:var(--pale);color:var(--blue);display:grid;place-items:center;font-size:21px}.about-grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:55px}.about-image{height:440px;border-radius:22px;overflow:hidden}.about-image img{height:100%;width:100%;object-fit:cover}.page-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.page-actions .btn{box-shadow:none}.page-list{display:grid;gap:14px;margin-top:24px}.page-list article{border:1px solid var(--line);border-radius:16px;padding:20px 22px}.page-list h3{margin:0 0 7px}.page-list p{margin:0}.page-hero .btn{margin-top:24px}
@media(max-width:1050px){.links{gap:11px}.links a{font-size:11px}.navin{gap:12px}.brand small{font-size:8px}}
@media(max-width:700px){.page-hero{padding:66px 0 60px}.page-hero h1{font-size:39px;letter-spacing:-1.8px}.page-hero p{font-size:14px}.page-body{padding:55px 0 70px}.page-grid{grid-template-columns:1fr;margin-top:35px}.about-grid{grid-template-columns:1fr;gap:28px}.about-image{height:310px}}

/* Profondeur visuelle 3D, activée au survol sur ordinateur et adoucie sur mobile */
.project-card,.news-card,.axis,.page-tile,.about-image{transform-style:preserve-3d;backface-visibility:hidden;transition:transform .38s cubic-bezier(.2,.8,.2,1),box-shadow .38s ease;will-change:transform}
@media(hover:hover) and (pointer:fine){.project-card:hover,.news-card:hover,.axis:hover,.page-tile:hover,.about-image:hover{transform:perspective(1050px) translateY(-7px) rotateX(1.3deg) rotateY(-1.3deg) translateZ(8px);box-shadow:0 28px 65px #0e31512b}.project-card img,.news-card img,.about-image img{transition:transform .65s cubic-bezier(.2,.8,.2,1)}.project-card:hover img,.news-card:hover img,.about-image:hover img{transform:scale(1.045) translateZ(12px)}}
.heroimg{animation:usfe-hero-drift 20s ease-in-out infinite alternate}.float-card{transform-style:preserve-3d;animation:usfe-float-3d 6s ease-in-out infinite}.page-hero{position:relative;overflow:hidden}.page-hero:after{content:"";position:absolute;width:370px;height:370px;right:5%;top:-180px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#8fc2ff70,#ffffff00 68%);filter:blur(3px);pointer-events:none}.site-added-image{width:min(100% - 48px,1180px);margin:45px auto;padding:12px;background:linear-gradient(145deg,#fff,#edf4fc);border:1px solid #dce8f6;border-radius:22px;box-shadow:0 22px 55px #102d501c;transform:perspective(1200px) rotateX(1deg);overflow:hidden}.site-added-image img{width:100%;max-height:620px;object-fit:cover;border-radius:14px}.site-added-image figcaption{padding:12px 6px 3px;color:var(--muted);font-size:12px}
@keyframes usfe-hero-drift{from{transform:scale(1.01) translate3d(0,0,0)}to{transform:scale(1.075) translate3d(-.5%,.7%,0)}}@keyframes usfe-float-3d{0%,100%{transform:perspective(900px) translate3d(0,0,0) rotateY(-2deg)}50%{transform:perspective(900px) translate3d(0,-8px,16px) rotateY(2deg)}}
@media(max-width:700px){.project-card,.news-card,.axis,.page-tile,.about-image{will-change:auto}.site-added-image{width:calc(100% - 34px);margin:30px auto;padding:8px}.site-added-image img{max-height:400px}.float-card{animation:none}}
@media(prefers-reduced-motion:reduce){.heroimg,.float-card{animation:none!important}.project-card,.news-card,.axis,.page-tile,.about-image{transition:none!important;transform:none!important;will-change:auto}}