:root{
  --primary:#002756;
  --accent:#D4E8FF;
  --accent-32: rgba(212,232,255,.32);
  --bg:#0B1020;
  --text:#0F172A;
  --muted:#475569;
  --ring: rgba(0,39,86,.2);
  --radius:18px;
  --shadow: 0 10px 30px rgba(0,0,0,.15);
  --shadow-soft: 0 6px 20px rgba(0,0,0,.08);
  --container: 1140px;
}

/* Base */
*{box-sizing:border-box}
html,body{margin:0}
html{scroll-behavior:smooth}
body{
  font-family:'Work Sans', system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color:var(--text);
  line-height:1.6;
  background:#fff;
}
a{color:var(--primary);text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--container);margin-inline:auto;padding-inline:clamp(14px,3vw,24px)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.6rem;font-weight:600;padding:.9rem 1.2rem;border-radius:calc(var(--radius) - 6px);border:1px solid transparent;transition:.25s ease;cursor:pointer}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 20px rgba(0,39,86,.35)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 28px rgba(0,39,86,.45)}
.btn-outline{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--accent);border-color:var(--primary)}

/* Header */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.75);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid rgba(2,6,23,.06)}
header .bar{display:flex;align-items:center;justify-content:space-between;padding:12px 0;gap:10px}
.logo{display:flex;align-items:center;gap:.6rem;font-weight:800;color:var(--primary)}
.logo-mark{width:28px;height:28px;display:grid;place-items:center;border-radius:10px;background:linear-gradient(135deg,var(--primary),#0A66C2);color:#fff;box-shadow:0 6px 16px rgba(10,102,194,.35)}

/* Navigation */
.nav{display:flex;align-items:center;gap:6px}
nav a{padding:.6rem .8rem;border-radius:10px;color:#0f172a;font-weight:600}
nav a:hover{background:rgba(212,232,255,.6)}
.nav-toggle{display:none;border:1px solid rgba(2,6,23,.12);background:#fff;border-radius:12px;padding:.6rem .7rem}

/* Hero */
.hero{background:radial-gradient(1200px 500px at 40% 0%, var(--accent-32), transparent 60%), var(--bg);color:#E6F0FF}
.hero .container{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding:clamp(48px,6vw,96px) 0}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;padding:.35rem .7rem;border-radius:999px;background:rgba(212,232,255,.16);color:#CFE6FF;font-weight:600;font-size:clamp(.85rem,1.2vw,.95rem);border:1px solid rgba(212,232,255,.24)}
h1{font-size:clamp(1.9rem, 3.2vw + .8rem, 3.2rem);line-height:1.15;margin:16px 0 14px;font-weight:800;color:#fff}
.lead{font-size:clamp(1rem,1.2vw + .6rem,1.2rem);color:#C9D7EE}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.hero-card{background:rgba(255,255,255,.06);border:1px solid rgba(212,232,255,.22);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-soft)}
.window-stack{position:relative;aspect-ratio:16/11;border-radius:14px;background:linear-gradient(180deg,#0f1b36,#0c162b);border:1px solid rgba(212,232,255,.18);overflow:hidden}
.win{position:absolute;inset:auto;box-shadow:0 16px 40px rgba(3,8,25,.6);border-radius:12px;background:#0F172A;border:1px solid rgba(212,232,255,.22)}
.win:nth-child(1){top:12%;left:6%;width:66%;height:50%}
.win:nth-child(2){bottom:8%;right:8%;width:56%;height:48%}
.win .bar{height:36px;background:#0B1329;border-bottom:1px solid rgba(212,232,255,.1);display:flex;align-items:center;gap:8px;padding:0 10px}
.dot{width:10px;height:10px;border-radius:50%;background:#334155}
.code{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-size:.9rem;color:#CFE1FF;padding:12px}

/* Sections */
section{padding:clamp(54px,7vw,84px) 0}
.section-title{font-size:clamp(1.5rem, 2.2vw + .6rem, 2.4rem);line-height:1.2;margin:0 0 14px;color:var(--text)}
.muted{color:var(--muted)}
.grid{display:grid;gap:clamp(16px,3vw,26px)}
.grid-2{grid-template-columns: repeat(2, minmax(0,1fr))}
.card{background:#fff;border:1px solid rgba(2,6,23,.08);border-radius:var(--radius);box-shadow:var(--shadow-soft);padding:clamp(16px,2.6vw,22px)}

/* Story/About */
.story p{margin:.4rem 0}
.about{background:linear-gradient(0deg, #F8FBFF, #fff)}
.bio{display:grid;grid-template-columns:64px 1fr;gap:12px;align-items:start;border:1px solid rgba(2,6,23,.08);border-radius:16px;padding:14px;background:#fff}
.avatar{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;font-weight:800;color:#fff;background:var(--primary);box-shadow:0 10px 24px rgba(0,39,86,.25)}

/* Bloc 3 illustration */
.workspace{position:relative;background:linear-gradient(180deg,#F5F9FF,#fff);border:1px dashed rgba(2,6,23,.15);border-radius:16px;padding:12px}
.workspace svg{width:100%;height:auto;display:block}

/* Steps */
.steps{counter-reset: step}
.step{display:flex;gap:14px;align-items:flex-start}
.step .n{counter-increment: step; width:36px;height:36px;border-radius:10px;background:var(--accent);color:var(--primary);font-weight:800;display:grid;place-items:center;box-shadow:0 6px 16px rgba(212,232,255,.8);border:1px solid rgba(2,6,23,.06)}

/* Benefits */
.list-check{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.list-check li{display:flex;gap:10px}
.check{width:22px;height:22px;border-radius:6px;background:var(--primary);flex:0 0 auto;display:grid;place-items:center}
.check svg{width:14px;height:14px;fill:#fff}

/* Beta */
.beta{background:linear-gradient(180deg, #F1F7FF, #FFFFFF)}
.badge{display:inline-flex;align-items:center;gap:.5rem;font-weight:700;color:var(--primary);background:var(--accent);border:1px solid rgba(2,6,23,.08);padding:.4rem .7rem;border-radius:999px}
.beta-points{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:18px 0}
.point{background:#fff;border:1px solid rgba(2,6,23,.08);border-radius:16px;padding:16px;box-shadow:var(--shadow-soft)}

/* FAQ */
.faq{max-width:900px}
details{border:1px solid rgba(2,6,23,.1);border-radius:14px;padding:14px 16px;background:#fff;box-shadow:var(--shadow-soft)}
details+details{margin-top:10px}
summary{cursor:pointer;font-weight:700}
summary::-webkit-details-marker{display:none}
details[open]{border-color:var(--primary)}

/* Footer */
footer{padding:40px 0;border-top:1px solid rgba(2,6,23,.08);color:#334155}

/* Utilities */
.pill{padding:.2rem .6rem;border-radius:999px;border:1px solid rgba(2,6,23,.12);background:#fff;color:#0f172a;font-weight:600}
.center{text-align:center}
.spaced{display:flex;gap:10px;flex-wrap:wrap}

/* Motion accessibility */
@media (prefers-reduced-motion: reduce){
  *{scroll-behavior:auto !important; animation:none !important; transition:none !important}
}

/* Responsive breakpoints */
@media (max-width: 1100px){
  .hero .container{grid-template-columns:1fr .95fr;gap:28px}
}
@media (max-width: 960px){
  .grid-2{grid-template-columns:1fr}
  .hero .container{grid-template-columns:1fr;gap:20px}
  nav{display:none}
  .nav-toggle{display:inline-flex}
}
@media (max-width: 640px){
  .win:nth-child(1){top:8%;left:4%;width:76%;height:48%}
  .win:nth-child(2){bottom:6%;right:6%;width:66%;height:46%}
  .step{gap:10px}
}