/* IO Performance : feuille de style */
/* Layout: dark workshop. Slanted shapes lifted from the logo (parallelogram buttons, tapered rules).
   One loud moment: the 10 s tachometer intro. The page itself stays quiet and technical. */
:root{
  color-scheme: dark;
  --bg:#040607;
  --bg-2:#081012;
  --panel:#0c1618;
  --line:#172a2d;
  --fg:#edf5f5;
  --mute:#8aa0a2;
  --teal:#0fa3a3;
  --teal-hi:#35ddd4;
  --red:#ff4b45;
  --f-display:'Barlow Condensed','Arial Narrow',Arial,sans-serif;
  --f-body:'Barlow',system-ui,-apple-system,'Segoe UI',sans-serif;
  --slant:polygon(5% 0,100% 0,95% 100%,0 100%);
}
/* base (navigateur) */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0}
img{max-width:100%;height:auto}
[hidden]{display:none!important}
.info a{color:inherit;text-decoration-color:var(--teal);text-underline-offset:3px}
.info a:hover{color:var(--teal-hi)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
html.intro-on,html.intro-on body{overflow:hidden}
body{background:var(--bg);color:var(--fg);font:400 17px/1.6 var(--f-body);-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);background:var(--bg);z-index:30}
a{color:inherit}
:focus-visible{outline:2px solid var(--teal-hi);outline-offset:3px}
.wrap{width:100%;max-width:1240px;margin-inline:auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.disp{font-family:var(--f-display);font-style:italic;font-weight:800;text-transform:uppercase;line-height:.92;letter-spacing:.005em;text-wrap:balance}
h1,h2,h3,p{margin:0}
.h2{font-family:var(--f-display);font-style:italic;font-weight:800;text-transform:uppercase;line-height:.95;font-size:clamp(2.5rem,6.2vw,4.6rem);text-wrap:balance}
.lead{color:var(--mute);max-width:60ch;font-size:1.08rem}
.tag{display:inline-flex;align-items:center;gap:14px;font:italic 700 .95rem/1 var(--f-display);letter-spacing:.22em;text-transform:uppercase;color:var(--fg)}
.tag::before,.tag::after{content:"";width:42px;height:3px;background:linear-gradient(90deg,transparent,var(--teal))}
.tag::after{background:linear-gradient(90deg,var(--teal),transparent)}
.tag.left::before{display:none}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:0 34px;border:0;cursor:pointer;font:italic 700 1.08rem/1 var(--f-display);letter-spacing:.14em;text-transform:uppercase;text-decoration:none;color:#031010;background:var(--teal-hi);clip-path:var(--slant);transition:background .2s,transform .2s}
.btn:hover{background:#7ff3ec;transform:translateX(3px)}
.btn.ghost{background:transparent;color:var(--fg);position:relative;clip-path:none;border:0;padding:0 30px}
.btn.ghost::before{content:"";position:absolute;inset:0;background:var(--line);clip-path:var(--slant)}
.btn.ghost::after{content:"";position:absolute;inset:2px;background:var(--bg);clip-path:var(--slant);transition:background .2s}
.btn.ghost span{position:relative;z-index:1}
.btn.ghost:hover{transform:none}
.btn.ghost:hover::after{background:var(--panel)}
.btn.sm{min-height:42px;padding:0 24px;font-size:.95rem}

/* ---------- header ---------- */
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:rgba(4,6,7,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:28px;height:68px}
.top .brand img{display:block;height:34px;width:auto}
.top nav{margin-left:auto;display:flex;align-items:center;gap:30px}
.top nav a{font:italic 600 1.02rem/1 var(--f-display);letter-spacing:.14em;text-transform:uppercase;text-decoration:none;color:var(--mute);transition:color .2s}
.top nav a:hover{color:var(--fg)}
.top nav a.btn{color:#031010}
.burger{display:none;margin-left:auto;width:44px;height:44px;border:0;background:transparent;cursor:pointer;color:var(--fg)}
.burger i{display:block;width:24px;height:2px;background:currentColor;margin:6px auto;transition:transform .25s,opacity .25s}
.top.open .burger i:nth-child(1){transform:translateY(8px) rotate(-18deg)}
.top.open .burger i:nth-child(2){opacity:0}
.top.open .burger i:nth-child(3){transform:translateY(-8px) rotate(18deg)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:
  radial-gradient(60% 80% at 85% 20%,rgba(15,163,163,.20),transparent 70%),
  repeating-linear-gradient(-72deg,transparent 0 46px,rgba(53,221,212,.035) 46px 47px),var(--bg)}
.hero-gauge{position:absolute;right:-6%;top:50%;width:min(78vw,760px);aspect-ratio:1;transform:translateY(-50%);opacity:.4;pointer-events:none;-webkit-mask-image:linear-gradient(90deg,transparent 15%,#000 60%);mask-image:linear-gradient(90deg,transparent 15%,#000 60%)}
.hero-gauge svg{width:100%;height:100%;display:block}
.hero .wrap{position:relative;padding-block:clamp(56px,9vw,128px) clamp(48px,7vw,96px)}
.hero h1{font-family:var(--f-display);font-style:italic;font-weight:800;text-transform:uppercase;line-height:.88;font-size:clamp(3.4rem,11.5vw,9.6rem);letter-spacing:-.005em;margin-top:26px}
.hero h1 .ln{display:block}
.hero h1 .out{color:transparent;-webkit-text-stroke:2px var(--teal-hi)}
.hero p.lead{margin-top:28px;font-size:1.2rem;color:#b5c6c7}
.hero .cta{display:flex;flex-wrap:wrap;gap:18px;margin-top:38px}
.go .hero h1 .ln{animation:rise .9s cubic-bezier(.2,.7,.2,1) both}
.go .hero h1 .ln:nth-child(2){animation-delay:.12s}
.go .hero h1 .ln:nth-child(3){animation-delay:.24s}
.go .hero .lead,.go .hero .cta,.go .hero .tag{animation:rise .9s .4s cubic-bezier(.2,.7,.2,1) both}
@keyframes rise{from{opacity:0;transform:translateY(34px) skewX(-6deg)}to{opacity:1;transform:none}}

.brands{border-top:1px solid var(--line);overflow:hidden;background:var(--bg)}
.brands .track{display:flex;width:max-content;animation:slide 48s linear infinite}
.brands span{display:flex;align-items:center;gap:30px;padding:20px 15px 20px 0;font:italic 700 1.5rem/1 var(--f-display);letter-spacing:.12em;text-transform:uppercase;color:#4d6466;white-space:nowrap}
.brands span::after{content:"";width:8px;height:22px;background:var(--teal);transform:skewX(-20deg);opacity:.7}
@keyframes slide{to{transform:translateX(-50%)}}

/* ---------- sections ---------- */
section.s{padding-block:clamp(72px,10vw,132px)}
section.alt{background:var(--bg-2);border-block:1px solid var(--line)}
.head{display:grid;gap:22px;margin-bottom:clamp(40px,6vw,72px)}

/* services */
.svc{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:clamp(32px,6vw,96px)}
.svc article{position:relative;padding:34px 0 38px;border-top:1px solid var(--line);display:grid;grid-template-columns:auto minmax(0,1fr);gap:0 22px}
.svc article::before{content:"";position:absolute;top:-1px;left:0;height:3px;width:0;background:var(--teal-hi);transition:width .45s cubic-bezier(.2,.7,.2,1)}
.svc article:hover::before{width:100%}
.svc .ico{width:46px;height:46px;color:var(--teal-hi);margin-top:4px}
.svc h3{font:italic 800 clamp(1.7rem,3vw,2.2rem)/1 var(--f-display);text-transform:uppercase;letter-spacing:.01em}
.svc p{color:var(--mute);margin-top:12px;max-width:46ch}
.svc ul{list-style:none;padding:0;margin:16px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.svc li{font:600 .78rem/1 var(--f-body);letter-spacing:.04em;color:#a6bcbd;padding:7px 12px;background:var(--panel);border:1px solid var(--line);clip-path:var(--slant)}

/* dyno */
.dyno{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:clamp(24px,4vw,56px);align-items:start}
.reads{display:grid;gap:14px;margin-top:22px}
.read{padding:18px 20px;border-left:3px solid var(--teal-hi);background:var(--panel)}
.read span.k{display:block;color:var(--mute);font-size:.88rem}
.read .v{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px;margin-top:4px;font-family:var(--f-display);font-style:italic;font-weight:800;text-transform:uppercase;font-variant-numeric:tabular-nums}
.read .a{font-size:1.5rem;color:var(--mute)}
.read .b{font-size:2.6rem;line-height:1;color:var(--fg)}
.read .d{font-size:1.5rem;color:var(--teal-hi)}
.chart{background:var(--panel);border:1px solid var(--line);padding:clamp(14px,2.4vw,26px)}
.chart svg{display:block;width:100%;height:auto;touch-action:pan-y}
.legend{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:14px;font-size:.88rem;color:var(--mute)}
.legend i{display:inline-block;width:30px;height:0;border-top:3px solid;vertical-align:middle;margin-right:8px}
.legend i.d{border-top-style:dashed}
.cursor{min-height:1.6em;margin-top:8px;font-size:.92rem;color:#b5c6c7;font-variant-numeric:tabular-nums}
.note{margin-top:16px;color:var(--mute);font-size:.86rem;max-width:80ch}

.finder{display:grid;gap:16px;margin-bottom:clamp(28px,4vw,44px);position:relative;z-index:2}
.search{position:relative}
.search input{font-size:1.1rem;padding:16px 18px 16px 50px;background:var(--panel) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238aa0a2' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-3.5-3.5'/%3E%3C/svg%3E") no-repeat 16px 50%/20px 20px}
#qres{position:absolute;left:0;right:0;top:100%;margin:6px 0 0;z-index:15;list-style:none;padding:6px;background:#0a1416;border:1px solid #25484c;max-height:min(420px,60vh);overflow:auto;box-shadow:0 18px 40px rgba(0,0,0,.55)}
#qres li{display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:16px;align-items:center;padding:11px 12px;cursor:pointer;border-bottom:1px solid var(--line)}
#qres li:last-child{border-bottom:0}
#qres li[aria-selected="true"],#qres li:hover{background:rgba(53,221,212,.1)}
#qres .t{grid-column:1;font:italic 700 1.12rem/1.15 var(--f-display);text-transform:uppercase;min-width:0}
#qres .s{grid-column:1;color:var(--mute);font-size:.86rem;min-width:0}
#qres .g{grid-column:2;grid-row:1/3;font:italic 800 1.15rem/1 var(--f-display);color:var(--teal-hi);white-space:nowrap}
#qres .empty{display:block;color:var(--mute);cursor:default}
.selects{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr) minmax(0,1.3fr);gap:14px}
.veh{margin-bottom:18px}
.veh h3{font:italic 800 clamp(1.8rem,3.4vw,2.5rem)/1 var(--f-display);text-transform:uppercase;text-wrap:balance}
.veh p{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.chip{display:inline-block;padding:6px 14px;font:600 .78rem/1 var(--f-body);letter-spacing:.03em;color:#b5c6c7;background:var(--panel);border:1px solid var(--line);clip-path:var(--slant)}
.chip.d{color:#ffd07a}.chip.e{color:var(--teal-hi)}.chip.a{color:#e6eef0}
.read .arr{font-size:1.4rem;color:var(--mute)}
.read .p{font:600 .95rem/1 var(--f-body);color:var(--mute)}
.res .btn{margin-top:22px}
.read .v{text-transform:none}
.read .d{white-space:nowrap}

/* process */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;counter-reset:s;position:relative}
.steps li{position:relative;padding:0 22px 0 0}
.steps li::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:58px;height:44px;margin-bottom:22px;background:var(--teal);color:#031010;font:italic 800 1.7rem/1 var(--f-display);clip-path:var(--slant);position:relative;z-index:1}
.steps li::after{content:"";position:absolute;top:21px;left:58px;right:0;height:2px;background:linear-gradient(90deg,var(--teal),var(--line))}
.steps li:last-child::after{display:none}
.steps h3{font:italic 800 1.5rem/1.05 var(--f-display);text-transform:uppercase}
.steps p{margin-top:10px;color:var(--mute);font-size:.98rem}
.pledge{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(24px,4vw,56px);margin-top:clamp(56px,8vw,96px);padding-top:40px;border-top:1px solid var(--line)}
.pledge h3{font:italic 800 1.7rem/1 var(--f-display);text-transform:uppercase}
.pledge p{margin-top:10px;color:var(--mute)}

/* faq */
.faqwrap{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,6vw,96px)}
details{border-top:1px solid var(--line)}
details:last-child{border-bottom:1px solid var(--line)}
summary{list-style:none;cursor:pointer;padding:24px 0;display:flex;align-items:center;justify-content:space-between;gap:20px;font:italic 700 1.55rem/1.1 var(--f-display);text-transform:uppercase}
summary::-webkit-details-marker{display:none}
summary::after{content:"";flex:none;width:14px;height:24px;background:var(--teal-hi);transform:skewX(-20deg) scaleY(.4);transition:transform .25s}
details[open] summary::after{transform:skewX(-20deg) scaleY(1)}
details p{padding:0 0 26px;color:var(--mute);max-width:62ch}

/* contact */
.contact{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,6vw,96px)}
.info{margin-top:30px;display:grid;gap:14px}
.info div{display:grid;gap:2px}
.info dt{font:italic 700 .9rem/1 var(--f-display);letter-spacing:.2em;text-transform:uppercase;color:var(--teal-hi)}
.info dd{margin:0;font-size:1.15rem;user-select:all}
form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.f{display:grid;gap:8px;min-width:0}
.f.full{grid-column:1/-1}
label{font:italic 700 .95rem/1 var(--f-display);letter-spacing:.16em;text-transform:uppercase;color:#a6bcbd}
input,select,textarea{width:100%;min-width:0;background:var(--panel);border:1px solid var(--line);color:var(--fg);font:inherit;font-size:1rem;padding:14px 16px;border-radius:0;transition:border-color .2s}
textarea{min-height:130px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--teal-hi);box-shadow:0 0 0 3px rgba(53,221,212,.15)}
::placeholder{color:#516466}
.sent{grid-column:1/-1;padding:22px;background:var(--panel);border-left:3px solid var(--teal-hi)}
.sent pre{margin:14px 0;white-space:pre-wrap;font:inherit;color:#b5c6c7;overflow-wrap:anywhere}
.sent .row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* footer */
footer{border-top:1px solid var(--line);background:#020303;padding-block:48px}
footer .wrap{display:flex;flex-wrap:wrap;gap:28px 48px;align-items:center;justify-content:space-between}
footer img{height:40px;width:auto;display:block}
footer nav{display:flex;flex-wrap:wrap;gap:12px 28px}
footer a,footer button.lnk{font:italic 600 .98rem/1 var(--f-display);letter-spacing:.14em;text-transform:uppercase;color:var(--mute);text-decoration:none;background:none;border:0;cursor:pointer;padding:0}
footer a:hover,footer button.lnk:hover{color:var(--fg)}
footer small{display:block;width:100%;color:#516466;font-size:.85rem}

/* ---------- intro ---------- */
#intro{display:none;position:fixed;inset:0;z-index:100;background:radial-gradient(circle at 50% 50%,#08181a 0,#020405 62%,#000 100%);transition:opacity .55s ease}
.intro-on #intro{display:block}
#intro.fade{opacity:0;pointer-events:none}
#introGlow{position:absolute;inset:0;pointer-events:none;opacity:0;background:radial-gradient(circle at 50% 50%,rgba(15,163,163,.34),rgba(15,163,163,.10) 40%,transparent 62%)}
#introGlow.hot{background:radial-gradient(circle at 50% 50%,rgba(255,75,69,.30),rgba(15,163,163,.12) 42%,transparent 64%)}
#intro.gauge-out #introGlow{opacity:0!important;transition:opacity .8s}
#gauge{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);transition:transform 1s cubic-bezier(.6,0,.2,1),opacity .8s ease}
#intro.gauge-out #gauge{transform:translate(-50%,-50%) scale(1.4);opacity:0}
#intro .flash{position:absolute;inset:0;opacity:0;pointer-events:none;background:radial-gradient(circle at 50% 50%,rgba(120,255,245,.75),rgba(15,163,163,.25) 40%,transparent 70%)}
#intro.go-flash .flash{animation:flash 1s ease-out}
@keyframes flash{0%{opacity:0}12%{opacity:1}100%{opacity:0}}
#intro .name{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:.14em;font:italic 800 clamp(5.6rem,25vw,17rem)/.85 var(--f-display);text-transform:uppercase;opacity:0;transition:opacity .5s,transform .7s,filter .7s}
#intro .name .io{color:#fff}
#intro .name .box{display:flex;background:var(--teal);color:#fff;padding:.04em .1em .0;clip-path:var(--slant)}
#intro .name .l{display:inline-block;opacity:0}
#intro.show-name .name{opacity:1}
#intro.show-name .name .l{animation:slam .6s cubic-bezier(.2,.8,.2,1) both;animation-delay:calc(var(--i)*80ms)}
@keyframes slam{from{opacity:0;transform:translateX(-90px) skewX(-18deg) scale(1.25);filter:blur(14px)}to{opacity:1;transform:none;filter:blur(0)}}
#intro.show-logo .name{opacity:0;transform:scale(.88);filter:blur(8px)}
#intro .rlogo{position:absolute;left:50%;top:50%;width:min(80vw,680px);height:auto;opacity:0;transform:translate(-50%,-50%) scale(.9);transition:opacity .7s ease,transform 1s cubic-bezier(.2,.7,.2,1);filter:drop-shadow(0 0 28px rgba(15,163,163,.55))}
#intro.show-logo .rlogo{opacity:1;transform:translate(-50%,-50%) scale(1)}
#intro .bar{position:absolute;left:0;right:0;bottom:0;height:3px;background:rgba(255,255,255,.06)}
#intro .bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--teal),var(--teal-hi))}
#skip,#snd{position:absolute;right:max(20px,env(safe-area-inset-right,0px));bottom:calc(22px + env(safe-area-inset-bottom,0px));min-height:44px;padding:0 22px;background:transparent;border:1px solid #284347;color:#9db3b4;font:italic 600 .95rem/1 var(--f-display);letter-spacing:.16em;text-transform:uppercase;cursor:pointer;transition:color .2s,border-color .2s}
#snd{left:max(20px,env(safe-area-inset-left,0px));right:auto}
#snd[aria-pressed="true"]{color:var(--teal-hi);border-color:var(--teal-hi)}
#skip:hover,#snd:hover{color:#fff;border-color:var(--teal-hi)}

#gl{position:absolute;inset:0;width:100%;height:100%;display:none;touch-action:none}
#intro[data-mode="3d"] #gl{display:block}
#intro[data-mode="3d"] #gauge,#intro[data-mode="3d"] #introGlow,#intro[data-mode="3d"] .flash,#intro[data-mode="3d"] .name,#intro[data-mode="3d"] .rlogo{display:none}
#introLoad{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:grid;justify-items:center;gap:16px;font:italic 700 .85rem/1 var(--f-display);letter-spacing:.32em;text-transform:uppercase;color:#5f7a7d;white-space:nowrap}
#introLoad[hidden]{display:none}
#introLoad i{display:block;width:150px;height:2px;background:linear-gradient(90deg,transparent,var(--teal-hi),transparent) no-repeat;background-size:40% 100%;animation:ld 1.1s linear infinite}
@keyframes ld{from{background-position:-60% 0}to{background-position:160% 0}}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .steps{grid-template-columns:1fr;gap:34px}
  .steps li{padding:0 0 0 78px;min-height:48px}
  .steps li::before{position:absolute;left:0;top:0;margin:0}
  .steps li::after{top:52px;bottom:-34px;left:28px;right:auto;width:2px;height:auto;background:linear-gradient(180deg,var(--teal),var(--line))}
  .dyno{grid-template-columns:1fr}
  }
@media (max-width:860px){
  .burger{display:block}
  .top nav{position:absolute;left:0;right:0;top:100%;margin:0;flex-direction:column;align-items:stretch;gap:0;background:rgba(4,6,7,.97);border-bottom:1px solid var(--line);padding:8px max(16px,env(safe-area-inset-left,0px)) 20px;display:none}
  .top.open nav{display:flex}
  .top nav a{padding:16px 0;border-bottom:1px solid var(--line)}
  .top nav a.btn{margin-top:16px;border:0;text-align:center;padding:0 34px}
  .svc,.faqwrap,.contact,.pledge,.selects{grid-template-columns:1fr}
  .svc article{grid-template-columns:auto minmax(0,1fr)}
  .hero-gauge{opacity:.3;right:-30%}
}
@media (max-width:560px){
  body{font-size:16px}
    form{grid-template-columns:1fr}
  .tag::before,.tag::after{width:24px}
  .hero h1 .out{-webkit-text-stroke-width:1.5px}
  #intro .name{flex-direction:column;gap:.05em}
  #skip,#snd{padding:0 14px;font-size:.8rem;letter-spacing:.1em}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .brands .track{animation:none}
  .go .hero h1 .ln,.go .hero .lead,.go .hero .cta,.go .hero .tag{animation:none}
}