/* operateur-ia.fr — système terminal */
:root{
  --bg:#07090a; --bg2:#0b0f11; --bg3:#10161a;
  --fg:#e9f1ec; --muted:#8ea49a; --dim:#5f746b;
  --accent:#37f5a1; --cyan:#3ec9f0;
  --line:#1b2723; --line2:#243430;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:"Inter",system-ui,-apple-system,sans-serif;
  --display:"Rajdhani",var(--sans);
  --sp:clamp(16px,2vw,24px);
  --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--fg);
  font-family:var(--sans);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:80px 80px;background-position:center;
}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:1;
  background:radial-gradient(ellipse at 50% 0%,rgba(55,245,161,.07),transparent 55%);}
img{max-width:100%}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--sp);position:relative;z-index:2}

/* header */
header.site{position:sticky;top:0;z-index:50;background:rgba(7,9,10,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:24px;height:64px}
.brand{font-family:var(--mono);font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg);display:flex;align-items:center;gap:10px}
.brand .dot{width:8px;height:8px;background:var(--accent);box-shadow:0 0 12px var(--accent);border-radius:50%}
nav.main{margin-left:auto;display:flex;gap:22px;font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:.08em}
nav.main a{color:var(--muted)}
nav.main a:hover{color:var(--fg);text-decoration:none}
nav.main a[aria-current="page"]{color:var(--accent)}
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:13px;letter-spacing:.04em;
  padding:12px 18px;border:1px solid var(--accent);color:#04120b;background:var(--accent);border-radius:2px;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease;text-transform:uppercase}
.btn:hover{text-decoration:none;transform:translateY(-2px);box-shadow:0 8px 24px rgba(55,245,161,.22)}
.btn:active{transform:scale(.98)}
.btn.ghost{background:transparent;color:var(--accent)}
.btn.ghost:hover{background:rgba(55,245,161,.08)}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line2);color:var(--fg);padding:8px 12px;font-family:var(--mono);font-size:12px}

/* hero */
.hero{padding:clamp(48px,7vw,96px) 0 clamp(32px,5vw,56px)}
.kicker{font-family:var(--mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);display:flex;align-items:center;gap:12px;margin:0 0 22px}
.kicker::before{content:"";width:28px;height:1px;background:var(--accent)}
h1{font-family:var(--display);font-weight:700;font-size:clamp(44px,8vw,88px);line-height:.98;letter-spacing:-.02em;margin:0 0 20px;text-transform:uppercase}
.hero .lead{font-size:clamp(18px,2.2vw,22px);color:var(--fg);max-width:38ch;margin:0 0 30px}
.hero .lead strong{color:var(--accent);font-weight:600}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.mini{font-family:var(--mono);font-size:12px;color:var(--dim)}

/* terminal card */
.term{margin-top:clamp(36px,5vw,64px);border:1px solid #2c413a;background:#0e1512;border-radius:3px;overflow:hidden;box-shadow:0 24px 60px rgba(0,0,0,.45)}
.term-bar{display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--bg3)}
.term-bar i{width:9px;height:9px;border-radius:50%;background:#2c3a35;display:block}
.term-bar span{margin-left:8px;font-family:var(--mono);font-size:11px;color:var(--dim);letter-spacing:.08em}
.term-body{padding:18px;font-family:var(--mono);font-size:13px;line-height:2;color:#a9c0b5;min-height:190px}
.term-body .ok{color:var(--accent)}
.term-body .warn{color:#f0c05a}
.term-body .cmd{color:var(--fg)}
.caret{display:inline-block;width:8px;height:14px;background:var(--accent);vertical-align:-2px;animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}

/* sections */
section{padding:clamp(40px,6vw,80px) 0;position:relative}
section + section{border-top:1px solid var(--line)}
h2{font-family:var(--display);font-weight:700;font-size:clamp(28px,4vw,44px);line-height:1.05;margin:0 0 18px;text-transform:uppercase;letter-spacing:-.01em}
h3{font-family:var(--display);font-size:20px;margin:0 0 8px;letter-spacing:.01em}
.idx{font-family:var(--mono);font-size:12px;color:var(--dim);letter-spacing:.2em;margin-bottom:10px;display:block}
p{margin:0 0 16px;color:var(--muted)}
p strong{color:var(--fg);font-weight:600}
.two{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(24px,4vw,56px);align-items:start}
ul.ticks{list-style:none;padding:0;margin:18px 0 0}
ul.ticks li{position:relative;padding-left:26px;margin-bottom:12px;color:var(--muted)}
ul.ticks li::before{content:"";position:absolute;left:0;top:9px;width:10px;height:1px;background:var(--accent)}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin-top:28px}
.card{background:var(--bg2);padding:26px;transition:background .2s ease}
.card:hover{background:var(--bg3)}
.card .num{font-family:var(--mono);font-size:11px;color:var(--accent);letter-spacing:.16em;display:block;margin-bottom:12px}

/* proof strip */
.strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin-top:28px}
.strip div{background:var(--bg2);padding:20px}
.strip .n{font-family:var(--display);font-size:30px;color:var(--accent);line-height:1}
.strip .l{font-family:var(--mono);font-size:11px;color:var(--dim);letter-spacing:.1em;text-transform:uppercase;margin-top:6px}

/* faq */
details{border:1px solid var(--line);background:var(--bg2);padding:18px 20px;margin-bottom:10px}
details[open]{border-color:var(--line2)}
summary{cursor:pointer;font-family:var(--display);font-size:19px;color:var(--fg);list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-family:var(--mono);color:var(--accent)}
details[open] summary::after{content:"–"}
details p{margin:14px 0 0}

/* CTA band */
.band{border-top:1px solid var(--line2);border-bottom:1px solid var(--line2);background:linear-gradient(180deg,rgba(55,245,161,.06),transparent)}
.band .inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;padding:clamp(32px,5vw,56px) 0}
.band h2{margin:0;font-size:clamp(24px,3.4vw,36px)}
.band p{margin:6px 0 0;color:var(--muted);font-size:15px}

/* footer */
footer.site{border-top:1px solid var(--line);padding:48px 0 40px;font-size:14px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
footer.site a{color:var(--muted)}
footer.site a:hover{color:var(--fg)}
footer .col h4{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);margin:0 0 12px}
footer .col a{display:block;margin-bottom:8px}
.copy{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);font-family:var(--mono);font-size:11px;color:var(--dim);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* page header */
.phead{padding:clamp(48px,7vw,88px) 0 clamp(24px,4vw,40px);border-bottom:1px solid var(--line)}
.phead h1{font-size:clamp(36px,6vw,68px);margin-bottom:16px}
.phead .lead{font-size:clamp(17px,2vw,20px);max-width:60ch;color:var(--muted);margin:0}

/* article body */
.article{padding:clamp(32px,5vw,64px) 0}
.article .body{max-width:72ch}
.article h2{margin-top:clamp(32px,4vw,52px)}
.article h2:first-child{margin-top:0}
.article ul.ticks{margin-bottom:24px}

/* reveal */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:860px){
  nav.main{display:none;position:absolute;top:64px;left:0;right:0;background:var(--bg2);border-bottom:1px solid var(--line);flex-direction:column;padding:16px var(--sp);gap:14px}
  nav.main.open{display:flex}
  .burger{display:block}
  header .btn{display:none}
  .two{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr}
  h1{font-size:clamp(38px,11vw,56px)}
  body{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* ============ v2 : centrage + mouvement ============ */
.hero{text-align:center}
.hero .kicker{justify-content:center}
.hero .lead{margin-left:auto;margin-right:auto}
.cta-row{justify-content:center}
.hero-inner{position:relative}
#nodes{position:absolute;inset:-15% -10% 0;width:120%;height:115%;opacity:.55;pointer-events:none;z-index:0}
.hero .wrap{position:relative;z-index:2}
h1.glitch:hover{animation:glitch .45s steps(2,end) 1}
@keyframes glitch{0%{transform:translate(0)}20%{transform:translate(-3px,1px)}40%{transform:translate(3px,-1px)}60%{transform:translate(-2px,-1px)}80%{transform:translate(2px,1px)}100%{transform:translate(0)}}

.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg2);padding:13px 0;position:relative;z-index:3}
.marquee .track{display:flex;gap:44px;white-space:nowrap;width:max-content;animation:slide 34s linear infinite;font-family:var(--mono);font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--dim)}
.marquee .track b{color:var(--accent);font-weight:400}
@keyframes slide{to{transform:translateX(-50%)}}

.chapter-head{text-align:center;max-width:860px;margin:0 auto 34px}
.chapter-head .idx{text-align:center}
.chapter-head p{text-align:left}
.two-center{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);align-items:center;margin-top:32px}
.shot{position:relative;overflow:hidden;border:1px solid var(--line2);background:var(--bg2);margin:0}
.shot img{display:block;width:100%;height:auto;filter:saturate(.85) contrast(1.06) brightness(.92);transition:transform .8s ease}
.shot:hover img{transform:scale(1.04)}
.shot figcaption{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);padding:10px 14px;border-top:1px solid var(--line);text-align:left}
.strip .n{transition:color .3s}
.cards .card{will-change:transform}
@media (max-width:860px){.two-center{grid-template-columns:1fr}}
.hero .shot img{aspect-ratio:21/9;object-fit:cover;max-height:440px}
.nav-cta{display:none}
@media (max-width:860px){.nav-cta{display:inline-flex;justify-content:center;margin-top:6px}}
.mini,.shot figcaption{color:var(--muted);font-size:11.5px}
.marquee .track{font-size:14px;color:var(--muted)}
.marquee:hover .track{animation-play-state:paused}
h1.glitch{animation:glitch .45s steps(2,end) 1 .7s}
#progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--accent);z-index:80;transition:width .1s linear}
.shot{position:relative}
.shot img{filter:grayscale(.85) contrast(1.12) brightness(.85)}
.shot::after{content:"";position:absolute;inset:0;background:var(--accent);mix-blend-mode:multiply;opacity:.16;pointer-events:none}
.shot:hover::after{opacity:.06;transition:opacity .5s}
ul.ticks li::before{transition:width .25s ease}
ul.ticks li:hover::before{width:18px}