:root{
  --black:#000; --dark:#1a1a1a; --gray:#6b6b6b; --light:#e6e6e6; --accent:#c4ff3b;
  --line:rgba(230,230,230,.18);
  --sans:"Neue Haas Grotesk Text","Neue Haas Grotesk Display","Helvetica Neue",Helvetica,Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --pad:clamp(16px,4vw,48px);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:64px}
body{background:var(--black);color:var(--light);font:400 16px/1.55 var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.muted{color:var(--gray)}
.chips,.tabs,.num,.status,dt,footer,small{font-family:var(--mono)}

/* barre */
.bar{position:fixed;inset:0 0 auto 0;z-index:10;height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 var(--pad);background:rgba(0,0,0,.82);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:500;font-size:18px;letter-spacing:-.01em}
nav{display:flex;gap:28px}
nav a{font-family:var(--mono);font-size:13px;text-decoration:none;color:var(--light)}
nav a:hover{color:var(--accent)}
.burger{display:none;width:40px;height:40px;position:relative}
.burger i{position:absolute;left:9px;right:9px;height:2px;background:var(--light);transition:transform .2s}
.burger i:first-child{top:15px}.burger i:last-child{top:23px}
.burger[aria-expanded=true] i:first-child{transform:translateY(4px) rotate(45deg)}
.burger[aria-expanded=true] i:last-child{transform:translateY(-4px) rotate(-45deg)}

/* accueil */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-media{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.88) 0%,rgba(0,0,0,.35) 55%,rgba(0,0,0,.1) 100%)}
.hero-text{position:relative;z-index:1;padding:96px var(--pad) var(--pad);max-width:1100px}
h1{font-weight:500;font-size:clamp(56px,13vw,176px);line-height:.9;letter-spacing:-.05em}
.lead{font-family:var(--mono);font-size:clamp(14px,2vw,20px);margin-top:20px}
.sub{color:#bbb;margin-top:12px;font-size:15px}
.chips{display:flex;flex-wrap:wrap;gap:8px 24px;list-style:none;margin-top:28px;padding-top:16px;border-top:1px solid var(--line);font-size:13px}
.chips li+li::before{content:"/";color:var(--accent);margin-right:24px}

/* blocs */
.block{padding:clamp(56px,9vw,120px) var(--pad);border-bottom:1px solid var(--line);max-width:1280px;margin:0 auto}
.head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:28px}
h2{font-weight:500;font-size:clamp(32px,6vw,72px);letter-spacing:-.04em;line-height:1}
.head .muted{font-family:var(--mono);font-size:13px}

/* onglets */
.tabs{display:flex;gap:4px;overflow-x:auto;border-bottom:1px solid var(--line);margin-bottom:28px;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tabs button{padding:12px 16px;font-size:13px;color:var(--gray);white-space:nowrap;border-bottom:2px solid transparent;margin-bottom:-1px}
.tabs button sup{margin-left:6px;font-size:10px}
.tabs button:hover{color:var(--light)}
.tabs button[aria-selected=true]{color:var(--light);border-color:var(--accent)}

/* catalogue */
.catalog{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(24px,5vw,64px);align-items:start}
.index{list-style:none}
.row{display:grid;grid-template-columns:56px 1fr auto;gap:12px;align-items:center;width:100%;text-align:left;padding:18px 8px;border-bottom:1px solid var(--line)}
.row:hover,.row[aria-current=true]{background:var(--dark)}
.num{font-size:12px;color:var(--gray)}
.name{font-size:clamp(20px,3vw,30px);letter-spacing:-.02em;font-weight:500}
.name small{display:block;font-size:11px;font-weight:400;color:var(--gray);letter-spacing:0;margin-top:2px}
.status{font-size:11px;color:var(--gray)}
.s-beta{color:var(--accent)}.s-alpha{color:#e6e6e6}
.row[aria-current=true] .name::after{content:"";display:inline-block;width:8px;height:8px;background:var(--accent);margin-left:10px}
.empty{padding:24px 8px;color:var(--gray);font-family:var(--mono);font-size:13px}
.fiche{position:sticky;top:76px;border:1px solid var(--line);padding:16px;background:#0a0a0a}
.fiche-img{aspect-ratio:16/10;background:var(--dark);overflow:hidden;margin-bottom:16px}
.fiche-img img{width:100%;height:100%;object-fit:cover;display:block}
.fiche h3{font-size:32px;font-weight:500;letter-spacing:-.03em}
.fiche p{color:#bbb;margin:8px 0 16px;max-width:60ch}
.links{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}
.links a{font-family:var(--mono);font-size:13px;padding:10px 16px;border:1px solid var(--light);text-decoration:none}
.links a:first-child{background:var(--accent);border-color:var(--accent);color:#000}
.links a:hover{background:var(--light);border-color:var(--light);color:#000}

/* fiche technique */
.spec div{display:grid;grid-template-columns:120px 1fr;gap:12px;padding:9px 0;border-top:1px solid var(--line);font-size:14px}
.spec div:last-child{border-bottom:1px solid var(--line)}
dt{font-size:12px;color:var(--gray);padding-top:2px}

/* à propos */
.about{display:grid;grid-template-columns:1.3fr 1fr;gap:clamp(24px,5vw,64px);align-items:start}
.statement{font-size:clamp(20px,2.6vw,30px);line-height:1.3;letter-spacing:-.02em;max-width:34ch}

footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;padding:24px var(--pad);font-size:12px;color:var(--gray)}

/* tablette / mobile */
@media (max-width:860px){
  .catalog,.about{grid-template-columns:1fr}
  .fiche{position:static;scroll-margin-top:72px}
  .burger{display:block}
  nav{position:fixed;top:56px;left:0;right:0;flex-direction:column;gap:0;background:#000;border-bottom:1px solid var(--line);transform:translateY(-120%);transition:transform .25s}
  nav.open{transform:none}
  nav a{padding:18px var(--pad);border-top:1px solid var(--line);font-size:15px}
}
@media (max-width:520px){
  .row{grid-template-columns:40px 1fr auto}
  .spec div{grid-template-columns:90px 1fr}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* contact discret */
.slim{max-width:1280px;margin:0 auto;padding:28px var(--pad) 36px;border-bottom:1px solid var(--line);display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 28px}
.mini{font:400 12px/1 var(--mono);letter-spacing:0;color:var(--gray)}
.contact-line{list-style:none;display:flex;flex-wrap:wrap;gap:8px 22px;font:13px/1.4 var(--mono)}
.contact-line li{display:flex;align-items:baseline;gap:8px}
.contact-line a{text-decoration:none;border-bottom:1px solid var(--line)}
.contact-line a:hover{color:var(--accent);border-color:var(--accent)}
.contact-line button{font:11px var(--mono);color:var(--gray)}
.contact-line button:hover{color:var(--accent)}
.slim .muted{font:12px/1.4 var(--mono);margin-left:auto}
@media (max-width:640px){.slim{flex-direction:column;gap:12px}.slim .muted{margin-left:0}}

/* accueil : vidéo + tagline à propos */
.hero-media{background:#0d0d0d}
.tagline{font-family:var(--mono);font-size:clamp(14px,1.6vw,18px);line-height:1.6;color:var(--accent);margin-bottom:24px}

/* projet multi-devices */
.devices{list-style:none;margin:0 0 20px}
.devices li{display:grid;grid-template-columns:120px 1fr;gap:4px 12px;padding:12px 0;border-top:1px solid var(--line);font-size:14px}
.devices li:last-child{border-bottom:1px solid var(--line)}
.devices b{font-weight:500;font-size:16px}
.devices b small{display:block;font-weight:400;font-size:11px;color:var(--gray);margin-top:2px}
.devices p{margin:0;color:#bbb;font-size:14px}
.tabs button.zero{opacity:.4}
.links .off{font-family:var(--mono);font-size:13px;padding:10px 16px;border:1px dashed var(--line);color:var(--gray);cursor:default}
.links .off small{font-size:10px;margin-left:6px}
@media (max-width:520px){.devices li{grid-template-columns:1fr}}