:root{
  --bg:#000000;
  --bg-2:#0a0a0a;
  --surface:#111111;
  --surface-2:#161616;
  --border:#1f1f1f;
  --border-hi:#2a2a2a;
  --text:#ededed;
  --text-dim:#a1a1a1;
  --text-mute:#666666;
  --accent:#0070f3;
  --accent-hover:#3291ff;
  --success:#50e3c2;
  --f-sans:"Geist","Inter",system-ui,-apple-system,sans-serif;
  --f-mono:"Geist Mono","JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--f-sans);
  font-size:15px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  font-feature-settings:"ss01","cv11";
}
.wrap{max-width:1100px;margin:0 auto;padding-inline:24px}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-weight:600;letter-spacing:-.025em;line-height:1.15;margin:0;text-wrap:balance}
p{margin:0}

/* Nav */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(0,0,0,.65);
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--border);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:14px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:1.05rem;letter-spacing:-.01em;color:var(--text)}
.brand svg{width:26px;height:26px;flex-shrink:0}
.brand .b{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{font-size:.88rem;font-weight:500;color:var(--text-dim);padding:7px 12px;border-radius:6px;transition:color .15s}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--text)}
.nav-cta{
  font-size:.86rem;font-weight:500;
  padding:7px 14px;border-radius:7px;
  background:var(--text);color:var(--bg)!important;
  transition:opacity .15s;
}
.nav-cta:hover{opacity:.88;color:var(--bg)!important}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;gap:7px;
  font-family:var(--f-sans);font-weight:500;font-size:.92rem;
  padding:10px 18px;border-radius:8px;
  border:1px solid var(--border);
  background:var(--surface);color:var(--text);
  text-decoration:none;cursor:pointer;
  transition:background .15s,border-color .15s;
}
.btn:hover{background:var(--surface-2);border-color:var(--border-hi)}
.btn.pri{background:var(--text);color:var(--bg);border-color:var(--text)}
.btn.pri:hover{background:var(--text-dim);border-color:var(--text-dim);color:var(--bg)}
.btn.acc{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn.acc:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:#fff}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* Hero */
.hero{padding-block:100px 70px;text-align:center}
.tag{
  display:inline-block;
  font-family:var(--f-mono);font-size:.76rem;font-weight:400;
  letter-spacing:.08em;color:var(--text-dim);
  padding:5px 12px;border:1px solid var(--border);border-radius:999px;
  margin-bottom:28px;background:var(--bg-2);
}
.hero h1{
  font-size:clamp(2.4rem,5.5vw,4rem);
  font-weight:600;letter-spacing:-.04em;line-height:1.05;
  max-width:880px;margin:0 auto 24px;
}
.hero h1 .acc{color:var(--accent)}
.hero .lede{
  color:var(--text-dim);font-size:1.12rem;
  max-width:620px;margin:0 auto 36px;
}
.cta-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.hero-meta{
  display:flex;gap:28px;justify-content:center;flex-wrap:wrap;
  margin-top:48px;font-family:var(--f-mono);font-size:.78rem;color:var(--text-mute);
}
.hero-meta span:first-child{color:var(--success)}

/* Section base */
section{padding-block:80px}
.sec-head{margin-bottom:48px;max-width:720px}
.sec-head.center{margin-inline:auto;text-align:center}
.sec-head .kicker{
  font-family:var(--f-mono);font-size:.76rem;font-weight:400;
  letter-spacing:.06em;color:var(--text-mute);
  margin-bottom:12px;
}
.sec-head h2{
  font-size:clamp(1.9rem,3.4vw,2.6rem);
  font-weight:600;letter-spacing:-.03em;margin-bottom:12px;
}
.sec-head p{color:var(--text-dim);font-size:1rem;max-width:60ch}

/* Features grid */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.feat{background:var(--bg-2);padding:28px;transition:background .2s}
.feat:hover{background:var(--surface)}
.feat-ico{
  width:36px;height:36px;border-radius:8px;
  background:var(--surface);border:1px solid var(--border);
  display:grid;place-items:center;color:var(--text);
  margin-bottom:16px;
}
.feat-ico svg{width:18px;height:18px}
.feat h3{font-size:1.05rem;font-weight:600;margin:0 0 6px;color:var(--text)}
.feat p{color:var(--text-dim);font-size:.9rem;margin:0}

/* Steps */
.steps{
  list-style:none;padding:0;margin:0;
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:s;
}
.step{
  background:var(--bg-2);border:1px solid var(--border);
  border-radius:12px;padding:24px;
  transition:border-color .2s;
}
.step:hover{border-color:var(--border-hi)}
.step-n{
  display:inline-block;
  font-family:var(--f-mono);font-size:.75rem;font-weight:500;
  letter-spacing:.06em;color:var(--accent);
  margin-bottom:14px;
}
.step h3{font-size:1rem;font-weight:600;margin:0 0 6px}
.step p{color:var(--text-dim);font-size:.88rem;margin:0}

/* Why */
.why-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.why-item{
  background:var(--bg-2);border:1px solid var(--border);
  border-radius:12px;padding:28px;
}
.why-item h4{font-size:1.1rem;font-weight:600;margin:0 0 8px;color:var(--text)}
.why-item p{color:var(--text-dim);font-size:.94rem;margin:0}

/* Download CTA card */
.download-card{
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  background:
    radial-gradient(60% 100% at 100% 50%, rgba(0,112,243,.1), transparent 70%),
    var(--bg-2);
  border:1px solid var(--border);border-radius:14px;
  padding:40px 44px;flex-wrap:wrap;
}
.download-card .kicker{
  font-family:var(--f-mono);font-size:.76rem;font-weight:400;
  letter-spacing:.06em;color:var(--text-mute);margin-bottom:8px;
}
.download-card h2{font-size:1.9rem;font-weight:600;letter-spacing:-.025em;margin:0 0 10px}
.download-sub{color:var(--text-dim);font-size:.98rem;margin:0;max-width:52ch}
.download-actions{display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.download-note{font-size:.78rem;color:var(--text-mute);margin:0}

/* About */
.about{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:start}
.about p{color:var(--text-dim);font-size:1rem;margin:0 0 14px;max-width:58ch}
.about p:last-child{margin-bottom:0}
.about strong{color:var(--text);font-weight:500}
.inline-link{color:var(--accent);text-decoration:none;border-bottom:1px solid rgba(0,112,243,.3);transition:border-color .15s}
.inline-link:hover{border-bottom-color:var(--accent)}
.spec{
  background:var(--bg-2);border:1px solid var(--border);
  border-radius:10px;padding:20px;
  font-family:var(--f-mono);font-size:.82rem;
}
.spec .row{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px solid var(--border)}
.spec .row:last-child{border-bottom:0}
.spec .k{color:var(--text-mute)}
.spec .v{color:var(--text)}

/* Projects grid (page projets) */
.projects{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{
  display:flex;flex-direction:column;
  background:var(--bg-2);border:1px solid var(--border);
  border-radius:12px;padding:24px;
  transition:border-color .2s,background .2s;
}
.card:hover{border-color:var(--border-hi);background:var(--surface)}
.card-head{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:18px}
.card-ico{width:36px;height:36px;border-radius:8px;background:var(--surface);border:1px solid var(--border);display:grid;place-items:center;color:var(--text)}
.card-ico svg{width:18px;height:18px}
.card-tag{font-family:var(--f-mono);font-size:.7rem;color:var(--text-mute);padding:3px 8px;background:var(--bg);border:1px solid var(--border);border-radius:999px}
.card h3{font-size:1.2rem;font-weight:600;letter-spacing:-.02em;margin:0 0 4px}
.card .slug{font-family:var(--f-mono);color:var(--text-mute);font-size:.78rem;margin:0 0 14px}
.card .desc{color:var(--text-dim);font-size:.9rem;margin:0 0 20px;flex-grow:1}
.card-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.88rem;font-weight:500;color:var(--text);
  margin-top:auto;
}
.card-link svg{width:13px;height:13px;transition:transform .15s}
.card:hover .card-link svg{transform:translate(2px,-2px)}

/* Back link (page projets) */
.back-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.86rem;color:var(--text-dim);
  margin-bottom:24px;transition:color .15s;
}
.back-link:hover{color:var(--text)}

/* Footer */
footer{
  border-top:1px solid var(--border);
  margin-top:40px;padding-block:32px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  color:var(--text-mute);font-size:.84rem;
}
.foot-brand{display:flex;align-items:center;gap:8px;color:var(--text-dim);font-weight:500}
.foot-brand svg{width:20px;height:20px}
.foot-links{display:flex;gap:20px}
.foot-links a{color:var(--text-mute);transition:color .15s}
.foot-links a:hover{color:var(--text)}

/* Reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.show{opacity:1;transform:none}

@media (max-width:900px){
  .features,.steps{grid-template-columns:1fr 1fr}
  .why-grid{grid-template-columns:1fr}
  .projects{grid-template-columns:1fr}
  .about{grid-template-columns:1fr}
  .download-card{flex-direction:column;align-items:flex-start;padding:32px}
  .download-actions{align-items:flex-start}
  .nav-links a:not(.nav-cta){display:none}
  .hero{padding-block:70px 50px}
  .hero-meta{gap:16px 20px;font-size:.72rem}
}
@media (max-width:560px){
  .features,.steps{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}