:root{
  --bg0: #070A12;
  --bg1: #0B1220;
  --card: rgba(255,255,255,0.06);
  --card2: rgba(255,255,255,0.10);
  --text: rgba(255,255,255,0.88);
  --muted: rgba(255,255,255,0.64);
  --muted2: rgba(255,255,255,0.48);
  --line: rgba(255,255,255,0.10);
  --accent: #7C5CFF;
  --accent2: #26D9C5;
  --shadow: 0 10px 35px rgba(0,0,0,0.35);
  --radius: 18px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 600px at 18% 10%, rgba(124,92,255,0.22), transparent 55%),
              radial-gradient(900px 500px at 75% 15%, rgba(38,217,197,0.18), transparent 60%),
              linear-gradient(180deg, var(--bg0), var(--bg1));
  line-height: 1.6;
}

.bg{
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background:
    radial-gradient(900px 480px at 20% 20%, rgba(124,92,255,0.18), transparent 60%),
    radial-gradient(800px 440px at 80% 30%, rgba(38,217,197,0.14), transparent 60%);
  filter: blur(0px);
}

a{ color: inherit; text-decoration: none; }
a:hover{ opacity: 0.92; }

.container{
  width: min(1100px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(7,10,18,0.55);
  border-bottom: 1px solid var(--line);
}

.site-header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 14px 0;
  gap: 16px;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.dot{
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 0 4px rgba(124,92,255,0.12);
}

.nav{
  display:flex;
  align-items:center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a{
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 12px;
}
.nav a:hover{
  background: rgba(255,255,255,0.05);
  color: var(--text);
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.05);
  color: var(--text);
  font-weight: 700;
  font-size: 14px;
  box-shadow: none;
}

.btn.primary{
  border: 1px solid rgba(124,92,255,0.35);
  background: linear-gradient(135deg, rgba(124,92,255,0.95), rgba(38,217,197,0.85));
  color: #0B1220;
}

.btn.ghost{
  background: rgba(255,255,255,0.03);
}

.hero{
  padding: 64px 0 40px;
}

.hero-grid{
  display:grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: start;
}

.kicker{
  display:inline-block;
  margin: 0 0 14px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
  border-radius: 999px;
  color: var(--muted);
  font-weight: 700;
  font-size: 13px;
}

h1{
  margin: 0 0 14px;
  line-height: 1.1;
  font-size: clamp(30px, 4.2vw, 48px);
  letter-spacing: -0.6px;
}

.lead{
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 16px;
  max-width: 62ch;
}

.hero-actions{
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 18px 0 18px;
}

.badges{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
}

.badge{
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  color: var(--muted);
  font-weight: 700;
  font-size: 12px;
}

.section{
  padding: 56px 0;
}

.section.alt{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-title{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 18px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.section-title h2{
  margin: 0;
  font-size: 26px;
  letter-spacing: -0.3px;
}
.section-title p{
  margin: 0;
  color: var(--muted);
  max-width: 70ch;
}

.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.grid-2{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.tile, .panel, .card{
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.tile h3, .panel h3, .card h3{
  margin: 0 0 10px;
  letter-spacing: -0.2px;
}
.tile p, .panel p, .card p{
  margin: 0 0 12px;
  color: var(--muted);
}

.mini{
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.mini li{
  margin: 6px 0;
}

.checklist, .xlist{
  margin: 0;
  padding: 0;
  list-style: none;
  display:flex;
  flex-direction: column;
  gap: 10px;
}
.checklist li, .xlist li{
  position: relative;
  padding-left: 26px;
  color: var(--muted);
}
.checklist li::before{
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: rgba(38,217,197,0.95);
  font-weight: 900;
}
.xlist li::before{
  content: "✕";
  position: absolute;
  left: 0;
  top: 0;
  color: rgba(255,90,90,0.95);
  font-weight: 900;
}

.note{
  margin-top: 14px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(124,92,255,0.20);
  background: rgba(124,92,255,0.08);
  color: var(--muted);
  font-size: 13px;
}

.steps{
  margin: 0;
  padding: 0;
  list-style: none;
  display:flex;
  flex-direction: column;
  gap: 14px;
}
.steps li{
  display:flex;
  gap: 14px;
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
}
.step-n{
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display:grid;
  place-items:center;
  font-weight: 900;
  color: #0B1220;
  background: linear-gradient(135deg, rgba(124,92,255,0.95), rgba(38,217,197,0.85));
  flex: 0 0 auto;
}
.steps h3{
  margin: 0 0 6px;
}
.steps p{
  margin: 0;
  color: var(--muted);
}

.contact{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
  align-items: start;
}
.contact h2{ margin: 0 0 10px; }
.contact p{ margin: 0 0 16px; color: var(--muted); }

.contact-cards{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.contact-card{
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius);
  padding: 14px;
}
.label{
  display:block;
  color: var(--muted2);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.2px;
}
.value{
  display:block;
  margin-top: 6px;
  font-weight: 900;
  font-size: 15px;
}
.hint{
  display:block;
  margin-top: 6px;
  color: var(--muted2);
  font-size: 12px;
}

.footer{
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted2);
  font-size: 13px;
}

@media (max-width: 960px){
  .hero-grid{ grid-template-columns: 1fr; }
  .grid-3{ grid-template-columns: 1fr; }
  .grid-2{ grid-template-columns: 1fr; }
  .contact{ grid-template-columns: 1fr; }
  .contact-cards{ grid-template-columns: 1fr; }
  .nav{ display:none; } /* simple et clean sur mobile */
}