:root{--ink:#0d2b4d;--blue:#1470ba;--cyan:#29a9b7;--green:#49cb5e;--mist:#e6e9ec;--paper:#f7fafc;--white:#fff;--max:1180px}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font:400 17px/1.6 Inter,Segoe UI,Arial,sans-serif;background:#fff}a{color:inherit}img{max-width:100%;display:block}.wrap{width:min(var(--max),calc(100% - 42px));margin:auto}
    .topbar{height:4px;background:linear-gradient(90deg,var(--blue),var(--cyan),var(--green))}.nav{height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;text-decoration:none}.brand img{width:255px;height:123px;object-fit:contain;clip-path:inset(17% 2% 19% 2%)}.links{display:flex;align-items:center;gap:26px}.links a{text-decoration:none;font-size:.86rem;font-weight:650;letter-spacing:.03em}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:999px;padding:12px 20px;border:1px solid transparent;background:var(--blue);color:#fff;text-decoration:none;font-weight:700;font-size:.92rem;transition:.2s}.button:hover{transform:translateY(-2px);background:#0e5e9f}.button.ghost{background:transparent;border-color:#94bfd9}.menu{display:none;border:0;background:none;font-size:1.6rem;color:var(--ink)}
    .hero{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:0}
    .hero:before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 92% 5%,rgba(41,169,183,.24),transparent 58%);pointer-events:none}
    .hero-grid{position:relative;min-height:580px;display:grid;grid-template-columns:minmax(0,1.18fr) minmax(0,.82fr);align-items:center;gap:38px;padding:62px 0 48px}
    .hero-content{position:relative;z-index:1}
    .eyebrow{text-transform:uppercase;letter-spacing:.16em;font-size:.8rem;font-weight:800;color:#1470ba}
    .hero .eyebrow{color:#8eddea}
    .hero h1{font-size:clamp(2.75rem,4.6vw,4.25rem);line-height:1.06;letter-spacing:-.045em;margin:22px 0 26px;max-width:680px}
    .hero h1 span{color:#7fe183}
    .hero p{font-size:1.12rem;line-height:1.7;max-width:650px;color:#d8e6ef}
    .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
    .hero .button{background:linear-gradient(100deg,var(--blue),#188fa4);min-height:48px}
    .hero .button.ghost{background:transparent}
    .hero-visual{position:relative;margin:0;min-height:438px;align-self:stretch;border-radius:80px 20px 80px 20px;overflow:hidden;box-shadow:0 26px 70px #00162955;border:1px solid #75cfdf38}
    .hero-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:68% 52%}
    .hero-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#0d2b4d00 66%,#0d2b4d40);pointer-events:none}
    .hero-specialties{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:0 0 30px;margin:0;list-style:none;gap:14px}
    .hero-specialties li{display:flex;gap:16px;align-items:center;padding:18px 16px;border:1px solid #6596b84d;border-radius:14px;background:#173e5d80;font-size:.92rem;font-weight:600;line-height:1.4}
    .hero-specialties svg{width:30px;height:30px;flex-shrink:0;color:#80dce2}
    .hero-specialties li:nth-child(2) svg{color:#99e69a}
    .hero-specialties li:nth-child(4) svg{color:#abd6fa}
    a:focus-visible,button:focus-visible{outline:3px solid #29a9b7;outline-offset:5px}
    .trust{border-bottom:1px solid var(--mist);background:#fff}.trust-grid{display:grid;grid-template-columns:repeat(4,1fr)}.trust-item{padding:24px;border-right:1px solid var(--mist)}.trust-item:last-child{border-right:0}.trust-item strong{display:block;font-size:1.05rem}.trust-item span{font-size:.82rem;color:#557087}
    section{padding:100px 0}.section-head{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px;margin-bottom:46px}.section-head h2,.story h2,.contact h2{font-size:clamp(2rem,4vw,3.45rem);line-height:1.06;letter-spacing:-.045em;margin:10px 0}.section-head p{margin:14px 0 0;color:#526b7f}.cards{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:18px}.card{grid-column:span 2;border:1px solid #dce6ec;border-radius:18px;padding:30px;background:#fff;min-height:300px;box-shadow:0 14px 40px rgba(13,43,77,.06);transition:.25s}.card:nth-last-child(-n+2){grid-column:span 3}.icon svg{width:28px;height:28px}.card:hover{transform:translateY(-6px);box-shadow:0 22px 54px rgba(13,43,77,.1)}.icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:#eaf8fa;color:var(--blue);font-size:1.5rem}.card h3{font-size:1.35rem;line-height:1.2;margin:25px 0 12px}.card p{font-size:.95rem;color:#587084}.card ul{padding-left:18px;color:#294b67;font-size:.9rem}.card li{margin:.35rem 0}
    .expertise{background:var(--paper)}.expertise .section-head{grid-template-columns:minmax(0,1.45fr) minmax(0,.75fr);gap:56px;align-items:center}.expertise .section-head h2{font-size:clamp(1.9rem,3.05vw,2.75rem);line-height:1.17;letter-spacing:-.035em}.expertise .section-head h2 span{color:#087a76}.expertise-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.panel{border-radius:24px;padding:42px;background:#fff;border:1px solid #dfe8ed}.panel.dark{background:var(--ink);color:#fff}.panel h3{font-size:1.7rem;line-height:1.2;margin:0 0 18px}.panel p{color:#587084}.panel.dark p{color:#bdd0de}.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}.tag{border:1px solid #cfe0e9;border-radius:999px;padding:8px 13px;font-size:.82rem;font-weight:700}.panel.dark .tag{border-color:#47718f}
    .story-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:80px;align-items:center}.story-mark{background:linear-gradient(145deg,var(--ink),#075e86);min-height:470px;border-radius:28px;display:grid;place-items:center;color:#fff;padding:55px;position:relative;overflow:hidden}.story-mark:after{content:"2027";position:absolute;right:-12px;bottom:-55px;font-size:11rem;font-weight:800;opacity:.08}.story-mark strong{font-size:2rem;line-height:1.15}.timeline{border-left:2px solid #b9dbe4;padding-left:30px;margin:30px 0}.timeline h3{margin:0;font-size:1.05rem}.timeline p{margin:4px 0 22px;color:#587084}.director{display:flex;gap:16px;align-items:center;border-top:1px solid var(--mist);padding-top:22px}.initials{width:50px;height:50px;border-radius:50%;display:grid;place-items:center;background:#e6f6f5;color:var(--ink);font-weight:800}
    .journal{background:#f3f8fa}.article-grid{display:grid;grid-template-columns:1.15fr .85fr .85fr;gap:18px}.article{background:#fff;border:1px solid #dce7ed;border-radius:18px;overflow:hidden}.article-top{height:150px;background:linear-gradient(135deg,#072c50,#1470ba 58%,#29a9b7);position:relative}.article:nth-child(2) .article-top{background:linear-gradient(135deg,#12778f,#29a9b7,#76c942)}.article:nth-child(3) .article-top{background:linear-gradient(135deg,#0d2b4d,#154d6c)}.article-top:after{content:"";position:absolute;width:62px;height:62px;border:2px solid rgba(255,255,255,.8);border-radius:50%;right:28px;top:30px}.article-body{padding:24px}.article small{text-transform:uppercase;letter-spacing:.12em;color:var(--blue);font-weight:800}.article h3{line-height:1.25;margin:10px 0}.linkedin{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:30px;padding:22px 26px;background:#e9f3f8;border-radius:16px}.linkedin b{font-size:1.05rem}.linkedin span{color:#567086;font-size:.9rem}
    .contact{background:linear-gradient(110deg,var(--blue),var(--cyan));color:#fff;padding:76px 0}.contact-grid{display:grid;grid-template-columns:1.4fr .6fr;gap:50px;align-items:center}.contact p{max-width:650px}.contact .button{background:#fff;color:var(--ink)}footer{background:#081f37;color:#bad0de;padding:45px 0 24px}.footer-grid{display:flex;justify-content:space-between;gap:28px;align-items:flex-start}.footer-brand{font-size:1.35rem;letter-spacing:.16em;color:#fff}.footer-links{display:flex;gap:22px;flex-wrap:wrap}.footer-links a{text-decoration:none;font-size:.86rem}.legal{font-size:.76rem;border-top:1px solid #244057;margin-top:32px;padding-top:20px;color:#7f9bae}
    @media(max-width:850px){.links{display:none}.menu{display:block}.links.open{display:flex;position:absolute;z-index:9;top:92px;left:20px;right:20px;padding:24px;background:#fff;box-shadow:0 20px 40px rgba(0,0,0,.15);flex-direction:column;align-items:stretch;border-radius:14px}.hero-grid{grid-template-columns:1fr;min-height:auto;padding:46px 0 28px;gap:30px}.hero h1{max-width:680px}.hero-visual{min-height:0;aspect-ratio:16/8;border-radius:42px 14px 42px 14px}.hero-visual img{object-position:60% 56%}.hero-specialties{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding-bottom:30px}.expertise .section-head{grid-template-columns:1fr;gap:20px}.trust-grid{grid-template-columns:1fr 1fr}.trust-item:nth-child(2){border-right:0}.section-head,.story-grid,.contact-grid{grid-template-columns:1fr;gap:28px}.cards,.expertise-grid,.article-grid{grid-template-columns:1fr}.card,.card:nth-last-child(-n+2){grid-column:auto}.story-mark{min-height:300px}.footer-grid{flex-direction:column}}@media(max-width:520px){.wrap{width:min(100% - 28px,var(--max))}.brand img{width:210px;height:102px}.hero-grid{padding-top:36px}.hero h1{font-size:clamp(2.3rem,9.4vw,2.9rem)}.hero p{font-size:1rem}.hero-visual{aspect-ratio:16/10}.hero-specialties li{padding:14px 10px;gap:10px;font-size:.875rem}.hero-specialties svg{width:25px;height:25px}.hero .eyebrow{font-size:.75rem;letter-spacing:.12em}.hero .actions .button{flex:1 1 auto}.trust-grid{grid-template-columns:1fr}.trust-item{border-right:0}.linkedin{align-items:flex-start;flex-direction:column}section{padding:72px 0}.hero{padding:0}}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
  
/* Charte Aquanesis : Montserrat, Inter, bleu profond et accents turquoise/vert. */
@font-face{font-family:Inter;font-style:normal;font-weight:400;font-display:swap;src:url('/assets/fonts/inter-400.ttf') format('truetype')}
@font-face{font-family:Inter;font-style:normal;font-weight:600;font-display:swap;src:url('/assets/fonts/inter-600.ttf') format('truetype')}
@font-face{font-family:Montserrat;font-style:normal;font-weight:600;font-display:swap;src:url('/assets/fonts/montserrat-600.ttf') format('truetype')}
@font-face{font-family:Montserrat;font-style:normal;font-weight:700;font-display:swap;src:url('/assets/fonts/montserrat-700.ttf') format('truetype')}
body{font-family:Inter,Segoe UI,Arial,sans-serif}h1,h2,h3,.hero-specialties strong{font-family:Montserrat,Segoe UI,Arial,sans-serif}
.nav{height:94px}.links{gap:24px}.links a[aria-current="page"]{color:var(--blue)}
.hero{isolation:isolate}.hero-backdrop{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:75% 51%;z-index:-2}
.hero:before{z-index:-1;background:linear-gradient(90deg,rgba(4,30,56,.99) 0%,rgba(5,36,65,.94) 30%,rgba(5,36,65,.7) 46%,rgba(5,36,65,.1) 72%,rgba(5,36,65,.02))}
.hero-inner{min-height:580px;display:flex;align-items:center;padding-top:62px;padding-bottom:72px}
.hero-content{width:59%;max-width:680px}.hero h1{font-size:clamp(2.45rem,4.2vw,3.9rem);font-weight:700;line-height:1.12;letter-spacing:-.045em;margin:22px 0}.hero h1 span{color:#fff}.hero p{max-width:630px;font-size:1.05rem;line-height:1.8;color:#f0f5fa}
.hero .button{background:linear-gradient(100deg,#73aa32,#188fa4);border:0;box-shadow:0 8px 22px #001b3240}.hero .button:hover{filter:brightness(1.08)}.hero .button.ghost{background:#0c305444;border:1px solid #c3e3f2;box-shadow:none}
.specialty-strip{background:#f8fbfd;padding:28px 0 34px;border-bottom:1px solid #e1ebf0}
.hero-specialties{gap:20px;padding:0}
.hero-specialties li{flex-direction:column;align-items:center;text-align:center;gap:18px;background:white;border:1px solid #e0e8ee;border-radius:12px;padding:28px 20px;box-shadow:0 4px 16px #0d2b4d0c;color:var(--ink);font-size:1rem;min-width:0}
.hero-specialties svg{width:42px;height:42px;color:#1470ba}
.hero-specialties li:nth-child(2) svg{color:#0b969e}.hero-specialties li:nth-child(4) svg{color:#0d2b4d}
.hero-specialties strong{display:block;font-size:1rem;font-weight:700;margin-bottom:10px}
.hero-specialties li span{display:block;font-weight:400;font-size:.9rem;line-height:1.6;color:#425d74}
.card p,.card ul{font-size:1rem}.tag{font-size:.875rem}
.journal-link{display:flex;align-items:center;gap:24px;border-radius:20px;overflow:hidden;background:#fff;border:1px solid #dfe8ef;text-decoration:none;box-shadow:0 10px 30px #0d2b4d08}.journal-link img{width:36%;height:245px;object-fit:cover;object-position:70% center}.journal-link div{padding:24px 30px 24px 0}.journal-link h3{font-size:1.55rem;line-height:1.3}.journal-link small{font-size:.875rem;color:#1470ba}.text-link{font-weight:600;color:#1470ba;text-underline-offset:4px}
.media-hero{padding:68px 0 62px;background:linear-gradient(115deg,#0d2b4d,#075d84);color:#fff}.media-hero .eyebrow{color:#9bdce5}.media-hero h1{font-size:clamp(2.6rem,4.7vw,4.1rem);line-height:1.13;letter-spacing:-.035em;margin:18px 0}.media-hero p{max-width:740px;font-size:1.1rem;color:#d9eaf3}.breadcrumb{display:flex;gap:10px;flex-wrap:wrap;font-size:.875rem;margin-bottom:24px}.breadcrumb a{text-underline-offset:4px}
.media-content{padding:64px 0 88px}.media-layout{display:grid;grid-template-columns:minmax(0,1.75fr) minmax(270px,.75fr);gap:32px;align-items:start}
.media-feature{border:1px solid #dce7ed;border-radius:18px;overflow:hidden;background:#fff}.media-feature>a{display:block;text-decoration:none}.media-feature img{width:100%;height:285px;object-fit:cover;object-position:70% center}.media-feature-body{padding:30px}.media-feature h2{font-size:clamp(1.6rem,2.6vw,2.2rem);line-height:1.27;letter-spacing:-.035em;margin:14px 0}.media-feature p{color:#526b7f}.category{display:inline-block;background:#e9f6f8;color:#096d7b;border-radius:999px;padding:5px 12px;font-size:.875rem;font-weight:600}
.media-aside{background:#edf6fa;border-radius:18px;padding:28px}.media-aside h2{font-size:1.35rem;line-height:1.3;margin:4px 0 16px}.media-aside p{font-size:1rem;color:#49657b}.topic-list{list-style:none;margin:22px 0;padding:0}.topic-list li{padding:12px 0;border-bottom:1px solid #cbdee7;font-size:.95rem}.topic-list li:last-child{border:0}.linkedin-symbol{display:inline-grid;place-items:center;background:#0a66c2;color:#fff;width:39px;height:39px;border-radius:5px;font-weight:700;font-size:1.45rem;font-family:Arial,sans-serif}.media-note{margin-top:32px;padding:26px 30px;border-left:3px solid #29a9b7;background:#f7fafc}.media-note h2{font-size:1.25rem;margin:0 0 10px}.media-note p{margin:0;color:#526b7f}
.article-heading{max-width:900px}.article-heading h1{font-size:clamp(2rem,4vw,3.5rem)}.article-reading{max-width:780px;margin:auto;font-size:1.075rem;line-height:1.85}.article-reading h2{font-size:1.65rem;line-height:1.35;margin:42px 0 18px;letter-spacing:-.025em}.article-reading p{margin:0 0 22px}.article-reading ul{padding-left:24px}.article-reading li{margin:9px 0}.article-reading .article-lead{font-size:1.2rem;color:#294e6b}.article-reading .article-end{border-top:1px solid #dce7ed;margin-top:42px;padding-top:28px;display:flex;gap:16px;justify-content:space-between;align-items:center;flex-wrap:wrap}
@media(max-width:1050px){.links{gap:16px}.hero-content{width:64%}.hero h1{font-size:3rem}.media-layout{grid-template-columns:minmax(0,1fr) 290px;gap:22px}}
@media(max-width:850px){.nav{height:88px}.hero-inner{min-height:560px;padding:52px 0}.hero-content{width:80%;max-width:630px}.hero-backdrop{object-position:72% 50%}.hero:before{background:linear-gradient(90deg,#06243bed,#06243bd6 38%,#06243b55 100%)}.hero h1{font-size:clamp(2.5rem,6vw,3.2rem)}.hero-specialties{padding:0}.hero-specialties li{padding:24px 20px}.media-layout{grid-template-columns:1fr}.media-aside{padding:30px}.media-feature img{height:280px}.journal-link img{width:38%}.media-hero{padding:50px 0}}
@media(max-width:520px){.hero-inner{min-height:580px;padding-top:44px;padding-bottom:44px}.hero-content{width:100%}.hero h1{font-size:clamp(2.15rem,8.7vw,2.8rem)}.hero .eyebrow{font-size:.75rem;letter-spacing:.09em}.hero p{font-size:1rem;line-height:1.7}.hero:before{background:linear-gradient(90deg,#06243beb,#06243bcc 65%,#06243b99)}.hero-backdrop{object-position:69% 50%}.specialty-strip{padding:18px 0 24px}.hero-specialties{gap:12px}.hero-specialties li{padding:22px 12px;gap:14px}.hero-specialties svg{width:34px;height:34px}.hero-specialties strong{font-size:.9rem}.hero-specialties li span{font-size:.875rem}.journal-link{display:block}.journal-link img{width:100%;height:190px}.journal-link div{padding:24px}.media-content{padding:38px 0 64px}.media-hero h1{font-size:2.4rem}.article-heading h1{font-size:2rem}.media-feature img{height:210px}.media-feature-body{padding:24px}.article-reading{font-size:1rem}}

/* Fonds inspirés du guide de marque fourni. */
.hero{background-color:#061e38}
.hero-backdrop{object-position:76% 56%}
.hero:before{background:linear-gradient(90deg,rgba(6,30,56,.99) 0%,rgba(6,30,56,.94) 30%,rgba(6,30,56,.66) 48%,rgba(6,30,56,.12) 68%,rgba(6,30,56,0) 90%)}
.hero-inner{min-height:590px}
.hero h1 span{color:#86d9cf}
.specialty-strip{background:linear-gradient(180deg,#f4f9fc,#fff)}
#services{background:#fff url('/assets/fond-flux-aquanesis.png') right bottom / 1100px auto no-repeat}
#services .card{background:rgba(255,255,255,.97)}
.expertise{background:linear-gradient(115deg,rgba(239,248,252,.97),rgba(244,251,250,.88)),url('/assets/fond-flux-aquanesis.png') right bottom / cover no-repeat}
.panel:not(.dark){background:rgba(255,255,255,.96)}
#societe{background:radial-gradient(ellipse at 0 30%,#e9f6fa 0,transparent 54%),#fff}
.story-mark{background:linear-gradient(115deg,rgba(6,30,56,.96),rgba(6,48,75,.85)),url('/assets/hero-molecules-aquanesis.png') 76% center / cover no-repeat}
.journal{background:linear-gradient(120deg,rgba(242,249,252,.95),rgba(255,255,255,.82)),url('/assets/fond-flux-aquanesis.png') right bottom / cover no-repeat}
.media-hero{background:linear-gradient(90deg,rgba(6,30,56,.99) 0%,rgba(6,30,56,.93) 58%,rgba(6,30,56,.68)),url('/assets/hero-molecules-aquanesis.png') right 47% / cover no-repeat}
.media-content{background:#fff url('/assets/fond-flux-aquanesis.png') right bottom / 1000px auto no-repeat}
.article-reading{position:relative}
.contact{background:linear-gradient(110deg,rgba(7,39,70,.98),rgba(7,115,143,.94)),url('/assets/fond-flux-aquanesis.png') right bottom / cover no-repeat}
@media(min-width:851px){.hero-content{width:58%;max-width:670px}}
@media(max-width:850px){.hero:before{background:linear-gradient(90deg,rgba(6,30,56,.98),rgba(6,30,56,.83) 60%,rgba(6,30,56,.5))}.hero-inner{min-height:580px}#services{background-size:1000px auto}}
@media(max-width:520px){
 .hero-inner{min-height:730px;align-items:flex-start;padding-top:38px;padding-bottom:220px}
 .hero-backdrop{top:auto;bottom:0;height:360px;object-position:75% 63%}
 .hero:before{background:linear-gradient(180deg,#061e38 0%,#061e38 52%,rgba(6,30,56,.89) 66%,rgba(6,30,56,.12) 88%,rgba(6,30,56,.08))}
 .hero .actions{margin-top:25px}
 .media-hero{background-position:75% center}
 .media-content,#services{background-size:760px auto}
}

/* Navigation entre les trois versions complètes du site. */
.nav{gap:20px}
.brand{flex-shrink:0}
.links{margin-left:auto}
.language-switch{display:flex;align-items:center;gap:2px;padding:4px;border:1px solid #d3e2eb;border-radius:999px;flex-shrink:0}
.language-switch a{display:grid;place-items:center;min-width:32px;min-height:34px;padding:5px 6px;border-radius:999px;text-decoration:none;font-size:.75rem;font-weight:600;line-height:1;color:#425d74}
.language-switch a:hover{background:#eaf5f8;color:var(--ink)}
.language-switch a[aria-current="true"]{background:var(--ink);color:white}
.card h3,.panel h3,.hero-specialties strong,.trust-item strong,.story-mark strong{overflow-wrap:anywhere;hyphens:auto}
.hero .eyebrow{max-width:100%;line-height:1.7}
@media(max-width:1100px){
 .nav{gap:14px}
 .nav .links{display:none;margin-left:0}
 .nav .menu{display:block;order:4;flex-shrink:0;min-width:40px;min-height:44px;padding:0;cursor:pointer}
 .nav .language-switch{margin-left:auto}
 .nav .links.open{display:flex;position:absolute;z-index:9;top:98px;left:20px;right:20px;padding:24px;background:#fff;box-shadow:0 20px 40px rgba(0,0,0,.15);flex-direction:column;align-items:stretch;border-radius:14px}
}
@media(max-width:850px){.nav .links.open{top:92px}}
@media(max-width:520px){
 .nav{gap:7px}
 .nav .brand img{width:150px;height:80px}
 .language-switch{padding:2px;gap:0}
 .language-switch a{min-width:29px;min-height:36px;padding:4px;font-size:.72rem}
 .nav .menu{min-width:32px}
 .trust-item{padding:20px 16px}
 .panel{padding:28px 24px}
 .hero h1,.media-hero h1{overflow-wrap:anywhere;hyphens:auto}
 .hero .actions .button{font-size:.875rem;padding:12px 15px}
 .media-aside .button{max-width:100%;white-space:normal;text-align:center}
}