:root{
  --nuit:#1a3a5c;
  --nuit2:#2a5a8c;
  --accent:#e67e22;
  --texte:#1a1a1a;
  --gris:#5b6470;
  --bg:#ffffff;
  --bgalt:#f0f4f8;
  --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--texte);
  background:var(--bg);
  line-height:1.65;
  font-size:17px;
}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
a{color:var(--nuit2)}
img{max-width:100%;height:auto;display:block}

/* Header */
.site-header{
  position:sticky;top:0;z-index:10;
  background:var(--nuit);color:#fff;
  box-shadow:0 2px 8px rgba(0,0,0,.15);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;padding-top:12px;padding-bottom:12px}
.brand{font-size:1.5rem;font-weight:700;color:#fff;text-decoration:none;letter-spacing:.5px}
.brand span{color:var(--accent)}
.site-header nav{display:flex;gap:18px;flex-wrap:wrap}
.site-header nav a{color:#dce6f2;text-decoration:none;font-size:.95rem}
.site-header nav a:hover{color:#fff;text-decoration:underline}

/* Hero */
.hero-figure{margin:0;position:relative}
.hero-figure img{width:100%;max-height:70vh;object-fit:cover}
.hero-figure figcaption{
  font-size:.85rem;color:var(--gris);font-style:italic;
  text-align:center;padding:8px 16px;background:var(--bgalt);margin:0;
}
.hero-text{padding:34px 20px 8px}
h1{font-size:2.2rem;line-height:1.2;color:var(--nuit);margin:.2em 0 .4em}
.lead{font-size:1.15rem;color:#33414f}

/* Content */
.content{padding:10px 20px 40px}
article{padding:22px 0;border-top:1px solid #e3e9f0}
article:first-child{border-top:none}
h2{font-size:1.6rem;color:var(--nuit);margin:.2em 0 .5em}
p{margin:.6em 0}
strong{color:#11233a}

.facts{list-style:none;padding:0;margin:16px 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:8px}
.facts li{background:var(--bgalt);padding:10px 14px;border-radius:6px;font-size:.95rem}

/* Footer */
.site-footer{background:var(--nuit);color:#dce6f2;padding:26px 0;margin-top:30px}
.site-footer p{margin:.3em 0}
.site-footer a{color:#fff}
.small{font-size:.85rem;color:#9fb2c8}

@media (max-width:640px){
  body{font-size:16px}
  h1{font-size:1.7rem}
  h2{font-size:1.35rem}
  .site-header .wrap{flex-direction:column;align-items:flex-start}
}