@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');
:root{--bg:#071019;--surface:#0d1925;--surface2:#111f2d;--text:#f7fbff;--muted:#9db0c1;--line:#213346;--yellow:#ffd522;--orange:#ff6b18;--blue:#18b7ff;--green:#c9f044;--radius:24px;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 Manrope,system-ui,sans-serif}body:before{content:"";position:fixed;inset:0;pointer-events:none;background:radial-gradient(circle at 82% 8%,rgba(24,183,255,.12),transparent 28%),radial-gradient(circle at 12% 34%,rgba(255,107,24,.08),transparent 24%);z-index:-1}a{color:inherit;text-decoration:none}img,video{max-width:100%}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-family:"Space Grotesk",sans-serif;line-height:1.05;letter-spacing:-.035em}h1{font-size:clamp(3rem,7vw,6.7rem);margin-bottom:24px}h2{font-size:clamp(2.2rem,4.8vw,4.4rem);margin-bottom:22px}h3{font-size:1.35rem}.eyebrow{display:block;margin-bottom:16px;color:var(--yellow);font-size:.78rem;font-weight:800;letter-spacing:.17em;text-transform:uppercase}.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;max-width:var(--max);margin:0 auto;padding:18px 24px;background:rgba(7,16,25,.8);backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.06)}.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;place-items:center;width:40px;height:40px;color:var(--yellow)}.brand-mark svg{width:100%}.brand strong,.brand small{display:block;line-height:1}.brand strong{font-family:"Space Grotesk";font-size:1rem;letter-spacing:.12em}.brand small{margin-top:5px;color:var(--muted);font-size:.65rem;letter-spacing:.34em}.site-header nav{display:flex;align-items:center;gap:28px;font-size:.9rem;font-weight:700}.nav-cta{padding:11px 18px;border:1px solid var(--line);border-radius:999px}.menu{display:none;background:none;color:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 14px}.hero{min-height:760px;max-width:var(--max);margin:auto;padding:80px 24px 70px;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:50px}.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--yellow),var(--orange),var(--blue));-webkit-background-clip:text;color:transparent}.hero-copy>p{max-width:650px;color:#bfd0df;font-size:1.18rem}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:34px 0}.button{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 24px;border-radius:999px;font-weight:800;border:1px solid transparent;cursor:pointer}.button.primary{background:var(--yellow);color:#071019;box-shadow:0 14px 50px rgba(255,213,34,.2)}.button.ghost{border-color:var(--line);background:rgba(255,255,255,.02)}.trust-row{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:.83rem}.hero-visual{position:relative;display:grid;place-items:center;min-height:600px}.hero-visual img{position:relative;z-index:2;width:min(100%,530px);mix-blend-mode:screen;filter:drop-shadow(0 30px 80px rgba(24,183,255,.18))}.halo{position:absolute;width:80%;aspect-ratio:1;border-radius:50%;background:conic-gradient(from 120deg,rgba(24,183,255,.22),rgba(255,213,34,.2),rgba(255,107,24,.17),rgba(24,183,255,.22));filter:blur(30px)}.floating-note{position:absolute;right:-10px;bottom:80px;z-index:3;padding:18px 22px;background:rgba(13,25,37,.86);backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:18px}.floating-note b,.floating-note span{display:block}.floating-note span{color:var(--muted);font-size:.8rem}.xr-strip{max-width:var(--max);margin:0 auto 80px;padding:40px;display:grid;grid-template-columns:1fr 1.05fr;gap:40px;align-items:center;background:linear-gradient(135deg,#101f2e,#0a141f);border:1px solid var(--line);border-radius:32px}.xr-strip p,.section-head p{color:var(--muted);max-width:680px}.xr-strip video,.course-video video{width:100%;border-radius:20px;background:#000;box-shadow:0 25px 60px rgba(0,0,0,.35)}.text-link,.card-link{color:var(--yellow);font-weight:800}.section{max-width:var(--max);margin:auto;padding:90px 24px}.section-head{margin-bottom:42px}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.course-card{display:flex;flex-direction:column;min-height:360px;padding:28px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);transition:.25s}.course-card:hover{transform:translateY(-6px);border-color:#456078;background:var(--surface2)}.course-card.featured{grid-column:span 2;background:linear-gradient(140deg,rgba(255,107,24,.16),rgba(24,183,255,.12)),var(--surface)}.course-card p{color:var(--muted)}.course-meta{display:flex;gap:10px;flex-wrap:wrap;margin:auto 0 22px}.course-meta span{padding:7px 10px;border:1px solid var(--line);border-radius:999px;color:#c6d5e2;font-size:.75rem}.card-link{font-size:.88rem}.quality{display:grid;grid-template-columns:1fr 1.2fr;gap:70px;align-items:start}.quality-copy p{color:var(--muted)}.steps article{padding:26px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:60px 160px 1fr;align-items:start;gap:12px}.steps b{color:var(--yellow)}.steps p{color:var(--muted)}.contact{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;background:linear-gradient(135deg,rgba(24,183,255,.08),rgba(255,213,34,.05));border:1px solid var(--line);border-radius:32px;margin-bottom:80px}.contact>div>p{color:var(--muted)}.contact-lines{display:flex;flex-direction:column;gap:8px;margin-top:30px}.contact-lines a{font-weight:800}.contact-lines span{color:var(--muted)}form{display:grid;grid-template-columns:1fr 1fr;gap:16px}label{color:#c7d5e1;font-size:.8rem;font-weight:700}input,select,textarea{width:100%;margin-top:7px;padding:13px 14px;color:#fff;background:#08121d;border:1px solid var(--line);border-radius:12px;font:inherit}textarea,label:last-of-type{grid-column:1/-1}form button{width:max-content}footer{max-width:var(--max);margin:auto;padding:40px 24px 56px;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr 1fr;align-items:center;color:var(--muted)}footer>p{text-align:center;margin:0}footer>div:last-child{display:flex;flex-direction:column;align-items:flex-end;font-size:.78rem}.course-page{max-width:var(--max);margin:auto;padding:0 24px}.course-hero{padding:110px 0 70px;max-width:920px}.course-hero h1{font-size:clamp(3rem,6vw,6rem)}.course-hero>p{max-width:800px;color:#c0d1de;font-size:1.2rem}.back{display:inline-block;margin-bottom:60px;color:var(--muted)}.facts{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:24px;overflow:hidden}.facts div{padding:24px;border-right:1px solid var(--line);background:var(--surface)}.facts div:last-child{border:0}.facts small,.facts strong{display:block}.facts small{color:var(--muted);margin-bottom:8px}.course-video{margin:0 0 50px;padding:28px;background:var(--surface);border:1px solid var(--line);border-radius:28px}.course-video p{margin:15px 0 0;color:var(--muted)}.course-content{padding:90px 0}.course-content>article{padding:70px 0;border-top:1px solid var(--line)}.course-content>article:first-child{border-top:0}.course-content h2{max-width:850px}.check-list{list-style:none;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:14px}.check-list li{padding:18px 20px 18px 50px;position:relative;background:var(--surface);border:1px solid var(--line);border-radius:15px}.check-list li:before{content:'✓';position:absolute;left:20px;color:var(--yellow);font-weight:900}.program-list{list-style:none;padding:0;margin:40px 0 0}.program-list li{display:grid;grid-template-columns:70px 1fr;align-items:center;padding:21px 0;border-top:1px solid var(--line)}.program-list b{color:var(--yellow);font-size:.8rem}.program-list span{font-size:1.15rem;font-weight:700}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.detail-grid div{padding:26px;background:var(--surface);border:1px solid var(--line);border-radius:18px}.detail-grid p{color:var(--muted);margin:0}.course-cta{margin:0 0 90px;padding:60px;background:linear-gradient(135deg,rgba(255,213,34,.13),rgba(24,183,255,.1));border:1px solid var(--line);border-radius:30px}.course-cta p{max-width:700px;color:var(--muted)}
@media(max-width:900px){.site-header nav{display:none;position:absolute;top:78px;left:16px;right:16px;padding:20px;flex-direction:column;align-items:stretch;background:#0d1925;border:1px solid var(--line);border-radius:18px}.site-header nav.open{display:flex}.menu{display:block}.hero{grid-template-columns:1fr;padding-top:70px}.hero-visual{min-height:460px}.xr-strip,.quality,.contact{grid-template-columns:1fr}.course-grid{grid-template-columns:1fr 1fr}.course-card.featured{grid-column:span 2}.facts{grid-template-columns:1fr 1fr}.facts div:nth-child(2){border-right:0}.facts div:nth-child(-n+2){border-bottom:1px solid var(--line)}.steps article{grid-template-columns:45px 1fr}.steps p{grid-column:2}.contact{margin-left:16px;margin-right:16px}footer{grid-template-columns:1fr;gap:28px;text-align:center}footer .brand{justify-content:center}footer>div:last-child{align-items:center}}
@media(max-width:620px){h1{font-size:3.25rem}.site-header{padding:14px 16px}.hero{min-height:auto;padding:65px 18px 35px}.hero-visual{min-height:390px}.floating-note{right:0;bottom:30px}.xr-strip{margin:20px 14px 60px;padding:22px}.section{padding:65px 18px}.course-grid{grid-template-columns:1fr}.course-card.featured{grid-column:auto}.course-card{min-height:320px}.facts{grid-template-columns:1fr}.facts div{border-right:0;border-bottom:1px solid var(--line)}.check-list,.detail-grid{grid-template-columns:1fr}.course-hero{padding-top:70px}.back{margin-bottom:45px}.course-content{padding:50px 0}.course-content>article{padding:48px 0}.course-cta{padding:34px 24px}.contact{padding:34px 22px}form{grid-template-columns:1fr}form label{grid-column:1}footer{padding-bottom:40px}}

/* Identité et univers colorés */
.brand-logo{height:60px;display:flex;align-items:center;overflow:hidden}.brand-logo img{width:128px;height:auto;display:block;transform:translateY(1px)}footer .brand-logo{height:82px}footer .brand-logo img{width:150px}.catalog-group{margin-top:58px}.catalog-title{display:flex;align-items:baseline;gap:16px;margin-bottom:22px}.catalog-title span{font-size:.78rem;font-weight:900;letter-spacing:.12em;color:var(--muted)}.catalog-title h3{font-size:clamp(1.55rem,3vw,2.3rem);margin:0}.course-card{--card-accent:#18b7ff;border-top:3px solid var(--card-accent)}.course-card .eyebrow,.course-card .card-link b{color:var(--card-accent)}.course-card.theme-fire{--card-accent:#ff4b3e}.course-card.theme-rescue{--card-accent:#29d67d}.course-card.theme-electric{--card-accent:#ff921e}.course-card.theme-ergonomy{--card-accent:#24b8d8}.course-card.theme-height{--card-accent:#ffd522}.course-card.theme-chemical{--card-accent:#b47cff}.course-card.theme-general{--card-accent:#18b7ff}
body.theme-fire{--theme:#ff4b3e;--theme-rgb:255,75,62}body.theme-rescue{--theme:#29d67d;--theme-rgb:41,214,125}body.theme-electric{--theme:#ff921e;--theme-rgb:255,146,30}body.theme-ergonomy{--theme:#24b8d8;--theme-rgb:36,184,216}body.theme-height{--theme:#ffd522;--theme-rgb:255,213,34}body.theme-chemical{--theme:#b47cff;--theme-rgb:180,124,255}body.theme-general{--theme:#18b7ff;--theme-rgb:24,183,255}.course-page .eyebrow,.course-page .program-list b,.course-page .check-list li:before{color:var(--theme)}.course-page .button.primary{background:var(--theme);color:#07111b}.course-page .course-hero{border-bottom:3px solid var(--theme);background:radial-gradient(circle at 85% 10%,rgba(var(--theme-rgb),.23),transparent 38%)}.course-page .facts{border-top:1px solid rgba(var(--theme-rgb),.65)}.course-page .facts div{box-shadow:inset 0 3px 0 rgba(var(--theme-rgb),.22)}.course-page .course-cta{background:linear-gradient(135deg,rgba(var(--theme-rgb),.15),rgba(24,183,255,.06))}
@media(max-width:620px){.brand-logo{height:52px}.brand-logo img{width:108px}.catalog-group{margin-top:42px}.catalog-title{align-items:center}.catalog-title h3{font-size:1.55rem}}

/* Navigation, photos et fiches déroulantes */
.site-header{padding-top:10px;padding-bottom:10px}.brand-logo{height:auto;overflow:visible;gap:10px}.brand-avatar{width:46px;height:46px;flex:0 0 46px;border-radius:50%;overflow:hidden;border:1px solid rgba(255,255,255,.22);background:#08111a;display:block}.brand-avatar img{width:52px;height:56px;object-fit:cover;object-position:50% 8%;transform:none;mix-blend-mode:screen}.brand-name{display:flex;flex-direction:column;line-height:.88}.brand-name strong{font-size:.83rem;letter-spacing:.13em}.brand-name small{font-size:.58rem;letter-spacing:.18em;color:#fff;margin-top:5px}.nav-drop{position:relative}.nav-drop summary{list-style:none;cursor:pointer;color:inherit;font-weight:700}.nav-drop summary::-webkit-details-marker{display:none}.nav-drop summary:after{content:'⌄';margin-left:7px;color:var(--yellow)}.nav-drop>div{display:none;position:absolute;top:34px;left:-20px;width:275px;padding:12px;background:#0d1925;border:1px solid var(--line);border-radius:15px;box-shadow:0 20px 50px rgba(0,0,0,.38);z-index:20}.nav-drop[open]>div{display:grid}.nav-drop>div a{padding:10px 12px;border-radius:9px}.nav-drop>div a:hover{background:rgba(255,255,255,.06)}
.hero-photo{min-height:560px;position:relative;overflow:hidden;border-radius:30px;border:1px solid var(--line)}.hero-photo:after,.family-hero:after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(5,12,18,.82))}.hero-photo img,.family-hero img,.course-hero-photo>img{width:100%;height:100%;object-fit:cover;display:block}.hero-photo span{position:absolute;left:24px;bottom:22px;z-index:2;padding:10px 14px;background:rgba(5,12,18,.78);border:1px solid rgba(255,255,255,.2);border-radius:999px;font-weight:800}.family-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.family-card{--card-accent:#18b7ff;min-height:360px;position:relative;overflow:hidden;border-radius:24px;border:1px solid var(--line);color:#fff}.family-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .45s}.family-card:after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,rgba(4,10,16,.98) 8%,rgba(4,10,16,.25) 80%)}.family-card>div{position:absolute;left:0;right:0;bottom:0;padding:28px;z-index:2}.family-card h3{font-size:2rem;margin:5px 0 9px}.family-card p{color:#d6e0e8;margin:0 0 17px;max-width:540px}.family-card b,.family-card .eyebrow{color:var(--card-accent)}.family-card:hover img{transform:scale(1.045)}.family-card.theme-fire{--card-accent:#ff4b3e}.family-card.theme-rescue{--card-accent:#29d67d}.family-card.theme-electric{--card-accent:#ff921e}.family-card.theme-ergonomy{--card-accent:#24b8d8}.family-card.theme-height{--card-accent:#ffd522}.family-card.theme-chemical{--card-accent:#b47cff}
.family-page{max-width:1280px;margin:auto}.family-hero{min-height:520px;margin:42px 24px 0;border-radius:28px;overflow:hidden;position:relative;display:grid;grid-template-columns:1fr 1fr;background:var(--surface);border:1px solid var(--line)}.family-hero>div{padding:65px;display:flex;flex-direction:column;justify-content:center;z-index:2}.family-hero:after{left:50%;background:linear-gradient(90deg,rgba(5,12,18,.15),transparent)}.family-hero h1{margin:.2em 0}.family-hero p{font-size:1.18rem;color:var(--muted)}.family-list{padding-top:80px}.course-hero-photo{display:grid;grid-template-columns:1.25fr .75fr;gap:42px;align-items:stretch}.course-hero-photo>img{min-height:430px;max-height:520px;border-radius:24px;border:1px solid var(--line)}
.accordion-stack{display:grid;gap:14px;padding-top:70px;padding-bottom:70px}.accordion-stack details{border:1px solid var(--line);border-radius:18px;background:var(--surface);overflow:hidden}.accordion-stack summary{cursor:pointer;list-style:none;padding:24px 28px;font-size:1.15rem;font-weight:800;display:flex;align-items:center;gap:18px}.accordion-stack summary::-webkit-details-marker{display:none}.accordion-stack summary:after{content:'+';margin-left:auto;font-size:1.7rem;color:var(--theme)}.accordion-stack details[open] summary:after{content:'−'}.accordion-stack summary span{color:var(--theme);font-size:.76rem;letter-spacing:.12em}.accordion-body{padding:8px 28px 30px;border-top:1px solid var(--line)}.accordion-body h2{font-size:1.8rem}.accordion-body .program-list{margin-top:10px}.accordion-body.detail-grid{display:grid}.footer-name{display:flex;flex-direction:column;gap:6px}.footer-name strong{letter-spacing:.12em}.footer-name small{color:var(--muted)}
@media(max-width:900px){.nav-drop>div{position:static;width:auto;box-shadow:none;margin-top:10px}.family-grid{grid-template-columns:1fr}.family-hero{grid-template-columns:1fr}.family-hero>div{padding:50px 34px}.family-hero>img{height:330px}.family-hero:after{display:none}.course-hero-photo{grid-template-columns:1fr}.course-hero-photo>img{height:360px;min-height:0}.hero-photo{min-height:450px}}
@media(max-width:620px){.brand-logo{height:auto}.brand-avatar{width:40px;height:40px;flex-basis:40px}.brand-avatar img{width:46px;height:50px}.brand-name strong{font-size:.7rem}.brand-name small{font-size:.5rem}.hero-photo{min-height:350px}.family-card{min-height:410px}.family-card>div{padding:22px}.family-card h3{font-size:1.65rem}.family-hero{margin:20px 14px 0}.family-hero>div{padding:38px 24px}.family-hero>img{height:260px}.course-hero-photo>img{height:280px}.accordion-stack summary{padding:20px;font-size:1rem}.accordion-body{padding:6px 20px 24px}}

/* Liserés lumineux des univers sur l'accueil */
.family-card{border:2px solid var(--card-accent);box-shadow:0 0 0 1px color-mix(in srgb,var(--card-accent) 22%,transparent),0 10px 34px color-mix(in srgb,var(--card-accent) 18%,transparent);transition:transform .3s,box-shadow .3s,border-color .3s}.family-card:hover{transform:translateY(-4px);box-shadow:0 0 0 1px color-mix(in srgb,var(--card-accent) 42%,transparent),0 16px 46px color-mix(in srgb,var(--card-accent) 32%,transparent)}

.practice-gallery{max-width:1240px;margin:10px auto 70px;padding:0 24px;display:grid;grid-template-columns:1fr 1fr;gap:22px}.practice-gallery article{position:relative;min-height:390px;overflow:hidden;border:1px solid rgba(255,75,62,.75);border-radius:24px;background:var(--surface);box-shadow:0 12px 38px rgba(255,75,62,.12)}.practice-gallery img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.practice-gallery article:after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,rgba(4,10,16,.96),rgba(4,10,16,.05) 70%)}.practice-gallery article>div{position:absolute;left:0;right:0;bottom:0;padding:26px;z-index:2}.practice-gallery h3{font-size:1.65rem;margin:5px 0}.practice-gallery p{margin:0;color:#d8e1e8}.practice-gallery .eyebrow{color:#ff5a4e}@media(max-width:760px){.practice-gallery{grid-template-columns:1fr;padding:0 14px}.practice-gallery article{min-height:360px}}

/* Logo Vaillant Prévention au bas de chaque page */
footer .footer-name:before{content:'';display:block;width:150px;height:125px;margin:0 0 8px;background:url('logo-vaillant-blanc.png') center top/contain no-repeat;mix-blend-mode:screen}footer .footer-name strong{display:none}@media(max-width:900px){footer .footer-name{align-items:center}footer .footer-name:before{margin-left:auto;margin-right:auto}}