:root{--turq:#34c9c9;--turq-dark:#079ba5;--ink:#0f1832;--muted:#667085;--soft:#f4fbfb;--line:#e7eeee;--white:#fff;--accent:#ff4747}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.6}.topbar{background:var(--ink);color:#fff;text-align:center;padding:8px 16px;font-size:14px}.topbar a{color:#fff;font-weight:800;margin-left:10px}.site-header{height:78px;display:flex;align-items:center;justify-content:space-between;padding:0 5vw;border-bottom:1px solid var(--line);background:rgba(255,255,255,.96);position:sticky;top:0;z-index:20;backdrop-filter:blur(10px)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}.brand-mark{width:48px;height:48px;border:4px solid var(--turq);border-radius:50%;display:grid;place-items:center;font-size:27px;font-weight:900;font-style:italic;box-shadow:inset 0 0 0 5px #dffafa}.brand-text{display:flex;flex-direction:column;line-height:1.05;letter-spacing:2px}.brand-text strong{font-size:18px}.brand-text 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22px;border-right:1px solid var(--line)}.quick-stats div:last-child{border:0}.quick-stats strong,.quick-stats span{display:block}.quick-stats strong{font-size:16px}.quick-stats span{font-size:13px;color:var(--muted)}.section{width:min(1120px,90vw);margin:auto;padding:95px 0}.section-title span{color:var(--turq-dark);font-size:12px;letter-spacing:2px;font-weight:900}.section-title h2{font-size:clamp(34px,4vw,52px);line-height:1.1;margin:8px 0 28px;letter-spacing:-1.5px}.centered{text-align:center}.centered p{color:var(--muted)}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:start;font-size:18px}.mission-card{background:var(--soft);padding:34px;border-radius:24px;border:1px solid #d6eeee}.mission-card h3{font-size:28px;margin-top:0}.mission-card li{margin:12px 0}.soft{position:relative}.soft:before{content:"";position:absolute;inset:30px -5vw;background:var(--soft);z-index:-1;border-radius:36px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{border:1px solid var(--line);border-radius:22px;padding:32px;background:#fff;box-shadow:0 10px 30px rgba(20,50,55,.05)}.card .icon{width:50px;height:50px;border-radius:14px;background:var(--turq);display:grid;place-items:center;font-weight:900;font-size:22px}.card h3{font-size:22px;margin-bottom:8px}.card p{color:var(--muted)}.levels-grid{display:grid;grid-template-columns:1fr 1fr;gap:25px}.levels-grid article{border-radius:24px;padding:34px;background:var(--ink);color:#fff}.levels-grid article:nth-child(2){background:var(--turq)}.levels-grid h3{font-size:26px;margin-top:0}.chips{display:flex;gap:10px;flex-wrap:wrap}.chips span{background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.25);padding:8px 13px;border-radius:999px;font-weight:700}.visual-section{display:grid;grid-template-columns:.8fr 1.2fr;gap:45px;align-items:center}.visual-section img{width:100%;display:block;border-radius:26px;box-shadow:0 22px 55px rgba(0,0,0,.12)}.visual-copy h2{font-size:46px;line-height:1.05;margin:10px 0 15px}.visual-copy p{color:var(--muted);font-size:18px}.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.why-grid div{border-top:3px solid var(--turq);padding:24px 8px}.why-grid b{font-size:13px;color:var(--turq-dark)}.why-grid h3{font-size:22px}.why-grid p{color:var(--muted)}.cta-section{background:var(--turq);padding:70px max(5vw,calc((100vw - 1120px)/2));display:flex;justify-content:space-between;align-items:center;gap:30px}.cta-section span{font-weight:900;font-size:12px;letter-spacing:2px}.cta-section h2{font-size:52px;margin:5px 0}.cta-section p{max-width:650px}.btn.light{background:#fff;color:var(--ink);min-width:160px}.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.contact-grid a{text-decoration:none;color:var(--ink);border:1px solid var(--line);padding:28px;border-radius:20px}.contact-grid b,.contact-grid span{display:block}.contact-grid b{font-size:20px}.contact-grid span{color:var(--muted)}footer{background:var(--ink);color:#cdd4df;display:flex;justify-content:space-between;align-items:center;padding:42px 5vw}.footer-brand{color:#fff}.whatsapp{position:fixed;right:22px;bottom:22px;width:58px;height:58px;border-radius:50%;background:#25d366;display:grid;place-items:center;text-decoration:none;font-size:26px;box-shadow:0 10px 26px rgba(0,0,0,.2);z-index:30}
@media(max-width:900px){nav{display:none;position:absolute;top:78px;left:0;right:0;background:#fff;padding:22px 5vw;flex-direction:column;align-items:flex-start;border-bottom:1px solid var(--line)}nav.open{display:flex}.menu-toggle{display:block}.hero{min-height:auto;padding:70px 0}.hero-inner,.two-col,.visual-section{grid-template-columns:1fr}.hero-card{transform:none}.quick-stats{grid-template-columns:1fr 1fr}.quick-stats div:nth-child(2){border-right:0}.cards,.why-grid{grid-template-columns:1fr 1fr}.levels-grid{grid-template-columns:1fr}.cta-section{flex-direction:column;align-items:flex-start}.contact-grid{grid-template-columns:1fr}footer{flex-direction:column;gap:20px;text-align:center}}
@media(max-width:600px){.brand-text small{display:none}.site-header{height:70px}.hero h1{letter-spacing:-2px}.hero-card{padding:28px}.hero-card h2{font-size:34px}.quick-stats{grid-template-columns:1fr}.quick-stats div{border-right:0;border-bottom:1px solid var(--line)}.cards,.why-grid{grid-template-columns:1fr}.section{padding:70px 0}.visual-copy h2,.cta-section h2{font-size:38px}.topbar{font-size:12px}.cta-section{padding:55px 5vw}}


/* Vidéo accueil Supermaths 2026 */
.hero-video-card{padding:0!important;overflow:hidden;display:flex;align-items:center;justify-content:center;background:#07142f!important;}
.hero-video{display:block;width:100%;height:100%;min-height:390px;max-height:520px;object-fit:cover;border:0;}
@media(max-width:900px){.hero-video{min-height:260px;max-height:420px;}}

/* SUPERMATHS-NO-HORIZONTAL-OVERFLOW-V199 */
html,body{max-width:100%;overflow-x:hidden!important;}
*,*::before,*::after{box-sizing:border-box;}
img,video,iframe,canvas,svg{max-width:100%;}