/* Landing d'OSLAB Technologies, à la charte OSLAB-CSS-2026-003 : bleu nuit pour la structure,
   magenta pour l'accent, jaune de l'anneau du logo en touche rare, Montserrat hébergée localement. */
@font-face{font-family:Montserrat;font-style:normal;font-weight:100 900;font-display:swap;src:url(/fonts/montserrat-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Montserrat;font-style:normal;font-weight:100 900;font-display:swap;src:url(/fonts/montserrat-latin-ext.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

:root{
  --font:'Montserrat','Liberation Sans','Segoe UI','Helvetica Neue',Arial,sans-serif;
  --navy:#082135;--navy-2:#004676;--abyss:#04121f;--slate:#44627d;--mist:#8fa3b8;--fog:#c9d4e0;
  --accent:#e51470;--accent-light:#ff5fa2;--accent-dark:#c50f5f;
  --ring:#EBC240;--blue:#4379A0;--ivory:#FAF9F6;--paper:#ffffff;--ink:#0d1b2a;--text:#3f4c59;--line:#e3e8ee;
  --radius:22px;--gutter:clamp(16px,5vw,64px);--max:1240px;
  --ease:cubic-bezier(.16,1,.3,1);
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ivory);color:var(--text);font:16px/1.65 var(--font);overflow-x:hidden}
h1,h2,h3,p{margin:0}
h1,h2,h3{font-weight:800;letter-spacing:-.02em;line-height:1.05;color:var(--navy)}
em{font-style:normal}
a{color:inherit}
img,video,svg{display:block;max-width:100%}
:focus-visible{outline:3px solid var(--accent-light);outline-offset:4px;border-radius:6px}
.skip{position:absolute;left:-9999px;top:12px;z-index:99;background:#fff;color:var(--navy);padding:10px 14px;border-radius:8px}
.skip:focus{left:16px}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-dark)}
.eyebrow::before{content:'';width:28px;height:2px;background:currentColor;border-radius:2px}
.on-dark .eyebrow{color:var(--accent-light)}
.logo{--lm:#4379A0;--ls:#54768D;--lr:#EBC240}
.on-dark .logo,.logo.light{--lm:#ffffff;--ls:#A8C1D2}

/* Boutons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:0 26px;border-radius:999px;font-weight:700;font-size:15px;text-decoration:none;border:1.5px solid transparent;transition:transform .35s var(--ease),background .25s,border-color .25s,box-shadow .35s var(--ease);white-space:nowrap}
.btn svg{width:18px;height:18px;transition:transform .35s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn.primary{background:var(--accent);color:#fff;box-shadow:0 10px 30px -10px rgb(229 20 112 / 70%)}
.btn.primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 16px 36px -12px rgb(229 20 112 / 80%)}
.btn.ghost{color:#fff;border-color:rgb(255 255 255 / 35%);background:rgb(255 255 255 / 6%);backdrop-filter:blur(6px)}
.btn.ghost:hover{border-color:#fff;background:rgb(255 255 255 / 12%)}
.btn.dark{background:var(--navy);color:#fff}
.btn.dark:hover{background:var(--navy-2);transform:translateY(-2px)}

/* En-tête */
.topbar{position:fixed;inset:0 0 auto;z-index:50;transition:background .4s,box-shadow .4s,backdrop-filter .4s}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:78px}
.topbar .logo{height:40px;width:auto}
.topbar nav{display:flex;align-items:center;gap:30px}
.topbar nav a{color:#fff;text-decoration:none;font-size:14px;font-weight:600;opacity:.82;transition:opacity .2s}
.topbar nav a:hover{opacity:1}
.topbar .btn{min-height:42px;padding:0 20px;font-size:14px}
.topbar.scrolled{background:rgb(8 33 53 / 82%);backdrop-filter:blur(14px) saturate(140%);box-shadow:0 1px 0 rgb(255 255 255 / 8%)}

/* Héros vidéo */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;color:#fff;background:var(--navy);overflow:hidden;isolation:isolate}
.hero video,.hero .poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-3}
.hero::before{content:'';position:absolute;inset:0;z-index:-2;background:
  linear-gradient(180deg,rgb(8 33 53 / 70%) 0%,rgb(8 33 53 / 25%) 30%,rgb(8 33 53 / 55%) 62%,rgb(4 18 31 / 96%) 100%),
  linear-gradient(90deg,rgb(8 33 53 / 85%) 0%,rgb(8 33 53 / 10%) 70%)}
.hero::after{content:'';position:absolute;inset:0;z-index:-1;opacity:.18;mix-blend-mode:overlay;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.hero-ring{position:absolute;z-index:-1;right:-14vmin;top:12vh;width:min(72vmin,720px);aspect-ratio:1;border-radius:50%;
  border:clamp(10px,1.6vmin,18px) solid var(--ring);opacity:.9;
  -webkit-mask:conic-gradient(from 210deg,#000 0 300deg,transparent 300deg);mask:conic-gradient(from 210deg,#000 0 300deg,transparent 300deg);
  animation:spin 40s linear infinite;filter:drop-shadow(0 0 40px rgb(235 194 64 / 35%))}
.hero-ring::after{content:'';position:absolute;inset:18%;border-radius:50%;border:2px solid rgb(235 194 64 / 45%)}
@keyframes spin{to{transform:rotate(360deg)}}
.hero-content{padding-top:130px;padding-bottom:40px}
.hero h1{color:#fff;font-size:clamp(42px,7.2vw,100px);letter-spacing:-.045em;line-height:.95;max-width:11.5ch;margin:22px 0 26px}
.hero h1 em{color:transparent;background:linear-gradient(100deg,var(--accent-light),var(--accent) 60%,#ff8a3d);-webkit-background-clip:text;background-clip:text}
.hero .lede{font-size:clamp(17px,1.6vw,20px);line-height:1.6;max-width:600px;color:#dbe4ec}
.hero .lede b{color:#fff}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);margin-top:clamp(36px,6vh,72px);border-top:1px solid rgb(255 255 255 / 16%)}
.hero-stats div{padding:22px 24px 6px 0}
.hero-stats div+div{padding-left:24px;border-left:1px solid rgb(255 255 255 / 16%)}
.hero-stats b{display:block;font-size:clamp(28px,3.4vw,44px);font-weight:800;letter-spacing:-.03em;line-height:1;color:#fff}
.hero-stats b small{font-size:.5em;font-weight:700;color:var(--ring);margin-left:4px}
.hero-stats span{display:block;margin-top:8px;font-size:13px;color:var(--fog)}
.scroll-cue{position:absolute;right:var(--gutter);bottom:34px;display:flex;align-items:center;gap:10px;font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--fog);writing-mode:vertical-rl}
.scroll-cue::after{content:'';width:1px;height:56px;background:linear-gradient(var(--fog),transparent);animation:cue 2.2s var(--ease) infinite}
@keyframes cue{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* Bandeau défilant */
.ticker{background:var(--accent);color:#fff;overflow:hidden;white-space:nowrap;padding:16px 0;font-weight:700;font-size:15px;letter-spacing:.02em}
.ticker-track{display:inline-flex;animation:ticker 38s linear infinite}
.ticker span{display:inline-flex;align-items:center;gap:28px;padding-right:28px}
.ticker span::after{content:'';width:9px;height:9px;border-radius:50%;border:2px solid var(--ring)}
@keyframes ticker{to{transform:translateX(-50%)}}

/* Sections */
section{position:relative}
.section{padding:clamp(80px,12vw,150px) 0}
.section h2{font-size:clamp(34px,5.2vw,68px);letter-spacing:-.035em;margin:18px 0 22px}
.section h2 em{color:var(--accent)}
.section .intro{font-size:clamp(17px,1.5vw,19px);max-width:620px}
.on-dark{background:var(--navy);color:var(--fog)}
.on-dark h2,.on-dark h3{color:#fff}
.on-dark h2 em{color:var(--accent-light)}

/* Problème : les portes */
.doors{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(36px,6vw,90px);align-items:center}
.media-card{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--navy);aspect-ratio:4/5;box-shadow:0 40px 80px -40px rgb(8 33 53 / 55%)}
.media-card video,.media-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.media-card::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgb(8 33 53 / 80%))}
.media-card .tag{position:absolute;z-index:1;left:22px;bottom:20px;right:22px;color:#fff;font-size:13px;font-weight:600;display:flex;align-items:center;gap:10px}
.media-card .tag::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 6px rgb(229 20 112 / 25%);animation:pulse 2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 10px rgb(229 20 112 / 0%)}}
.measure{position:absolute;z-index:1;top:22px;left:22px;right:22px;display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:14px}
.measure i{flex:1;height:2px;background:repeating-linear-gradient(90deg,#fff 0 6px,transparent 6px 12px);opacity:.75}
.measure i:first-child::before,.measure i:last-child::after{content:''}
.bignum{display:flex;align-items:flex-end;gap:18px;margin:34px 0 12px}
.bignum b{font-size:clamp(90px,13vw,170px);font-weight:900;letter-spacing:-.06em;line-height:.8;color:var(--navy)}
.bignum b sup{font-size:.5em;vertical-align:top;color:var(--accent);margin-right:.06em;position:relative;top:.12em;line-height:1}
.bignum>span{font-size:15px;font-weight:600;color:var(--slate);max-width:180px;line-height:1.4;padding-bottom:10px}
.doors p+p{margin-top:16px}

/* La roue */
.wheel-section{background:var(--paper);overflow:hidden}
.wheel-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,6vw,90px);align-items:center}
.wheel-stage{position:relative;display:grid;place-items:center}
.wheel-stage::before{content:'';position:absolute;inset:6%;border-radius:50%;background:radial-gradient(circle,rgb(67 121 160 / 14%),transparent 68%)}
.wheel{width:min(100%,520px);height:auto;overflow:visible;cursor:pointer;-webkit-tap-highlight-color:transparent}
.wheel .spin{transform-origin:200px 200px;animation:spin 26s linear infinite}
.wheel.exploded .spin,.wheel:hover .spin,.wheel.hors-champ .spin{animation-play-state:paused}
/* Le produit fini, plastique noir imprimé en 3D. Démontage du moyeu vers l'extérieur :
   les trois V d'abord, les six sections de jante ensuite, le pneu en dernier. */
.wheel .v,.wheel .seg,.wheel .pneu{transform-origin:200px 200px;transition:transform .8s var(--ease)}
.wheel .v{transition-delay:calc(var(--i) * 40ms)}
.wheel .seg{transition-delay:calc(90ms + var(--i) * 30ms)}
.wheel .pneu{transition:transform .8s var(--ease) .2s,opacity .5s .2s}
.wheel.exploded .v{transform:translate(calc(var(--dx) * 12px),calc(var(--dy) * 12px))}
.wheel.exploded .seg{transform:translate(calc(var(--dx) * 26px),calc(var(--dy) * 26px))}
.wheel.exploded .pneu{transform:scale(1.19);opacity:.9}
.pneu-corps{fill:url(#roue-pneu)}
.pneu-lisere{fill:none;stroke:#c3cad3;stroke-width:1.1;opacity:.85}
.v-corps{fill:#1d2025;stroke:rgb(255 255 255 / 13%);stroke-width:.7;stroke-linejoin:round}
.v-cuvette{fill:#16181c;stroke:rgb(255 255 255 / 8%);stroke-width:.5}
.seg path{stroke:rgb(255 255 255 / 12%);stroke-width:.6;stroke-linejoin:round}
.seg .bord{fill:#202328}
.seg .courante{fill:url(#roue-courante)}
.seg .anneau{fill:#1a1c21}
.moyeu-plaque{fill:#1f2226;stroke:rgb(255 255 255 / 13%);stroke-width:.7;stroke-linejoin:round}
.moyeu-fut{fill:#22252a;stroke:rgb(255 255 255 / 16%);stroke-width:.7}
.moyeu-calotte{fill:#272b31;stroke:#0d0e10;stroke-width:1.4}
.moyeu-roulement{fill:#050607}
.wheel .reflet{pointer-events:none;transition:opacity .5s}
.wheel.exploded .reflet{opacity:0}
.wheel-legend{position:absolute;bottom:-30px;left:50%;transform:translateX(-50%);margin:0;white-space:nowrap;font-size:13px;font-weight:600;color:var(--slate)}
.wheel-legend b{color:var(--navy)}
.wheel-toggle{white-space:nowrap;position:absolute;bottom:2%;left:50%;transform:translateX(-50%);display:inline-flex;align-items:center;gap:8px;border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:9px 18px;font:700 13px var(--font);color:var(--navy);cursor:pointer;box-shadow:0 10px 30px -14px rgb(8 33 53 / 40%);transition:border-color .2s}
.wheel-toggle:hover{border-color:var(--accent)}
.wheel-toggle b{color:var(--accent)}
.specs{list-style:none;padding:0;margin:34px 0 0;display:grid;gap:4px}
.specs li{display:grid;grid-template-columns:52px 1fr;gap:16px;padding:20px 0;border-top:1px solid var(--line)}
.specs li:last-child{border-bottom:1px solid var(--line)}
.specs .n{font-size:13px;font-weight:800;color:var(--accent);padding-top:3px}
.specs h3{font-size:19px;letter-spacing:-.01em;margin-bottom:5px}
.specs p{font-size:15px}

/* Cartes d'usage */
.uses{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:56px}
.use{position:relative;border-radius:var(--radius);padding:34px 30px 32px;background:linear-gradient(160deg,rgb(255 255 255 / 7%),rgb(255 255 255 / 2%));border:1px solid rgb(255 255 255 / 10%);overflow:hidden;transition:transform .5s var(--ease),border-color .3s}
.use:hover{transform:translateY(-6px);border-color:rgb(255 95 162 / 45%)}
.use::after{content:'';position:absolute;width:220px;height:220px;right:-90px;top:-90px;border-radius:50%;background:radial-gradient(circle,rgb(229 20 112 / 28%),transparent 70%);opacity:0;transition:opacity .5s}
.use:hover::after{opacity:1}
.use .ico{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:rgb(235 194 64 / 12%);color:var(--ring);margin-bottom:26px}
.use .ico svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.use h3{font-size:21px;margin-bottom:10px}
.use p{font-size:15px;color:var(--fog)}

/* Matériaux : vidéo plein cadre */
.materials{position:relative;color:#fff;overflow:hidden;isolation:isolate;background:var(--abyss)}
.materials>video,.materials>.poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;transform:scale(1.08)}
.materials::before{content:'';position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgb(4 18 31 / 96%) 0%,rgb(4 18 31 / 82%) 45%,rgb(4 18 31 / 35%) 100%)}
.materials-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(30px,6vw,90px);align-items:end}
.materials h2{color:#fff}
.materials h2 em{color:transparent;background:linear-gradient(100deg,#ffb347,var(--ring) 45%,#ff6a3d);-webkit-background-clip:text;background-clip:text}
.materials .intro{color:#dbe4ec}
.temp{display:flex;gap:clamp(18px,4vw,48px);margin-top:42px;flex-wrap:wrap}
.temp div{min-width:140px}
.temp b{display:block;font-size:clamp(30px,3.6vw,46px);font-weight:800;letter-spacing:-.03em;color:#fff;line-height:1}
.temp span{display:block;font-size:13px;color:var(--mist);margin-top:8px}
.lab-card{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;border:1px solid rgb(255 255 255 / 14%);box-shadow:0 40px 80px -30px #000}
.lab-card video,.lab-card img{width:100%;height:100%;object-fit:cover}
.lab-card figcaption{position:absolute;left:0;right:0;bottom:0;padding:44px 22px 18px;background:linear-gradient(transparent,rgb(4 18 31 / 92%));font-size:13px;font-weight:600;color:#fff}

/* Modèle sans usine */
.model-head{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,6vw,90px);align-items:end}
.model-video{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:16/7;margin-top:56px;background:var(--navy)}
.model-video video,.model-video img{width:100%;height:100%;object-fit:cover}
.model-video::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgb(8 33 53 / 55%),transparent 60%)}
.model-video p{position:absolute;z-index:1;left:clamp(20px,4vw,48px);top:50%;transform:translateY(-50%);max-width:380px;color:#fff;font-size:clamp(20px,2.4vw,30px);font-weight:800;letter-spacing:-.02em;line-height:1.15}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:48px;counter-reset:s}
.step{position:relative;padding:30px 26px 10px 0}
.step+.step{padding-left:26px;border-left:1px solid var(--line)}
.step::before{counter-increment:s;content:'0' counter(s);display:block;font-size:13px;font-weight:800;color:var(--accent);margin-bottom:16px}
.step h3{font-size:19px;margin-bottom:8px}
.step p{font-size:15px}
.steps .bar{grid-column:1/-1;height:3px;background:var(--line);border-radius:3px;overflow:hidden}
.steps .bar i{display:block;height:100%;width:100%;background:linear-gradient(90deg,var(--accent),var(--ring));transform:scaleX(0);transform-origin:left;transition:transform 1.6s var(--ease)}
.steps.in .bar i{transform:scaleX(1)}

/* Repères */
.proofs{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.proof{border-radius:var(--radius);padding:30px;background:var(--paper);border:1px solid var(--line);display:flex;gap:18px;align-items:flex-start;transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.proof:hover{transform:translateY(-4px);box-shadow:0 30px 60px -36px rgb(8 33 53 / 45%)}
.proof .ico{flex:none;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--navy);color:var(--ring)}
.proof .ico svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.proof h3{font-size:18px;margin-bottom:6px}
.proof p{font-size:14.5px}

/* Contact */
.contact{padding:0 0 clamp(80px,10vw,120px)}
.contact-card{position:relative;border-radius:calc(var(--radius) + 10px);overflow:hidden;padding:clamp(40px,7vw,90px);color:#fff;background:radial-gradient(120% 140% at 100% 0%,#ff5fa2 0%,var(--accent) 34%,#8a0b48 70%,var(--navy) 100%);isolation:isolate}
.contact-card::before{content:'';position:absolute;z-index:-1;width:min(60vw,560px);aspect-ratio:1;right:-10%;bottom:-45%;border-radius:50%;border:16px solid var(--ring);opacity:.55;-webkit-mask:conic-gradient(from 210deg,#000 0 300deg,transparent 300deg);mask:conic-gradient(from 210deg,#000 0 300deg,transparent 300deg);animation:spin 50s linear infinite reverse}
.contact-card h2{color:#fff;font-size:clamp(32px,4.8vw,62px);letter-spacing:-.035em;max-width:16ch;margin:16px 0 20px}
.contact-card .eyebrow{color:#ffe1ee}
.contact-card p{max-width:560px;font-size:18px;color:#ffe9f2}
.contact-card .hero-actions{margin-top:36px}
.contact-card .btn.light{background:#fff;color:var(--navy)}
.contact-card .btn.light:hover{transform:translateY(-2px);box-shadow:0 18px 36px -16px rgb(0 0 0 / 50%)}
.contact-card address{font-style:normal;margin-top:40px;font-size:14px;color:#ffd3e6}

/* Pied de page */
footer{background:var(--abyss);color:var(--mist);padding:64px 0 40px;font-size:13.5px}
.foot{display:grid;grid-template-columns:1fr 1.4fr;gap:48px}
footer .logo{height:46px;width:auto}
footer .legal{margin-top:20px;line-height:1.7}
footer h3{color:#fff;font-size:13px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px}
.credits{list-style:none;padding:0;margin:0;display:grid;gap:9px;font-size:12.5px;line-height:1.5}
.credits a{color:var(--fog);text-decoration:underline;text-decoration-color:rgb(201 212 224 / 35%);text-underline-offset:3px}
.credits a:hover{text-decoration-color:var(--accent-light)}
.credits b{color:#fff;font-weight:600}
.foot-bottom{margin-top:48px;padding-top:24px;border-top:1px solid rgb(255 255 255 / 8%);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px}

/* Apparitions au défilement (actives seulement si le JavaScript tourne) */
.js .reveal{opacity:0;transform:translateY(34px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.js .reveal.in{opacity:1;transform:none}
.js .reveal.d1{transition-delay:.08s}.js .reveal.d2{transition-delay:.16s}.js .reveal.d3{transition-delay:.24s}
.js .hero .reveal{transition-duration:1.3s}

/* Tablette */
@media (max-width:980px){
  .topbar nav a:not(.btn){display:none}
  .doors,.wheel-grid,.materials-grid,.model-head,.foot{grid-template-columns:1fr}
  .media-card{aspect-ratio:16/11}
  .uses,.proofs{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .step:nth-of-type(3){padding-left:0;border-left:0}
  .wheel-stage{order:-1;max-width:460px;margin:0 auto}
  .model-video{aspect-ratio:16/9}
}
/* Téléphone */
@media (max-width:600px){
  .topbar .wrap{height:66px}
  .topbar .logo{height:32px}
  .topbar .btn{min-height:38px;padding:0 14px;font-size:13px}
  .hero-content{padding-top:110px;padding-bottom:28px}
  .hero-stats{grid-template-columns:1fr 1fr 1fr}
  .hero-stats div{padding:16px 10px 0 0}
  .hero-stats div+div{padding-left:12px}
  .hero-stats span{font-size:11.5px}
  .hero-ring{width:92vmin;right:-40vmin;top:8vh;opacity:.6}
  .scroll-cue{display:none}
  .hero::before{background:linear-gradient(180deg,rgb(8 33 53 / 82%) 0%,rgb(8 33 53 / 70%) 45%,rgb(4 18 31 / 97%) 100%)}
  .hero-actions .btn{flex:1 1 100%}
  .steps{grid-template-columns:1fr}
  .step,.step+.step{padding:24px 0 6px;border-left:0;border-top:1px solid var(--line)}
  .model-video p{font-size:19px;max-width:240px}
  .bignum{gap:12px}
  .foot-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .js .reveal{opacity:1;transform:none}
}