:root{--bleu:#0057b8;--cyan:#00a6d6;--jaune:#ffd23f;--nuit:#0b2a55;--fond:#f3f8fc;--vig:#f4c20d;--ale:#ff6b00;--dan:#d7191c;--ok:#1db954}
*{box-sizing:border-box}
body{margin:0;font-family:Poppins,system-ui,sans-serif;color:var(--nuit);background:var(--fond);line-height:1.55}
a{color:inherit}
.hero{background:linear-gradient(135deg,#0057b8 0%,#00a6d6 60%,#ffd23f 140%);color:#fff;padding-bottom:36px}
.nav{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;padding:14px 20px;max-width:1100px;margin:auto}
.logo{font-weight:800;font-size:20px;text-decoration:none}
.links a{margin-left:16px;text-decoration:none;font-size:14px;opacity:.9}.links a:hover{opacity:1;text-decoration:underline}
.wrap{max-width:1100px;margin:auto;padding:16px 20px 0}
.tag{display:inline-block;background:var(--jaune);color:var(--nuit);font-weight:800;padding:4px 14px;border-radius:99px;font-size:13px}
h1{font-size:56px;margin:10px 0 4px;font-weight:800;letter-spacing:1px}
.sub{margin:0 0 22px;font-size:17px;opacity:.96}.sub small{opacity:.9}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.card{background:#fff;color:var(--nuit);border-radius:16px;padding:16px 18px;box-shadow:0 8px 24px #0b2a5526}
.card .k{font-size:13px;opacity:.8}.card .big{font-size:28px;font-weight:800;line-height:1.2;margin:4px 0}.card .s{font-size:12px;opacity:.75}
.card.lvl{background:var(--ok);color:#fff}.card.lvl.vigilance{background:var(--vig);color:var(--nuit)}.card.lvl.alerte{background:var(--ale)}.card.lvl.danger{background:var(--dan)}
.maj{font-size:12px;opacity:.9;margin:12px 0 0}
.sec{max-width:1100px;margin:auto;padding:44px 20px}
.sec.alt{max-width:none;background:#fff}.sec.alt>*{max-width:1060px;margin-left:auto;margin-right:auto}
h2{font-size:30px;margin:0 0 6px;font-weight:800;color:var(--bleu)}
h3{margin:0 0 8px;font-size:17px}
.lead{margin:0 0 18px;max-width:800px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.panel{background:#fff;border-radius:16px;padding:16px;box-shadow:0 4px 18px #0b2a5514}
.sec.alt .panel{background:var(--fond)}
.panel.txt p,.panel.txt li{font-size:14px}.panel.txt ul{padding-left:18px;margin:0}
.legend{font-size:13px;margin:0 0 12px;display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px}
.d{display:inline-block;width:14px;height:14px;border-radius:4px;margin-right:-8px;vertical-align:middle}
.d.v{background:var(--vig)}.d.a{background:var(--ale)}.d.r{background:var(--dan)}
.note{font-size:13px;opacity:.8;margin:14px 0 0}
#map{height:480px;border-radius:16px;box-shadow:0 4px 18px #0b2a5526;margin-bottom:12px}
.map-leg{margin-top:4px}
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}
.fact{background:linear-gradient(160deg,#0057b8,#00a6d6);color:#fff;border-radius:16px;padding:16px;font-size:14px}
.fact b{display:block;font-size:18px;margin-bottom:6px;color:var(--jaune)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.step{border-radius:16px;padding:16px;font-size:14px;color:#fff}.step b{display:block;font-size:18px;margin-bottom:6px}
.step.n{background:var(--ok)}.step.v{background:var(--vig);color:var(--nuit)}.step.a{background:var(--ale)}.step.r{background:var(--dan)}
.foot{background:var(--nuit);color:#fff;padding:24px 20px;font-size:13px;text-align:center;display:grid;gap:6px}
.foot a{color:var(--jaune)}
@media(max-width:900px){.cards,.facts,.steps{grid-template-columns:1fr 1fr}.grid2{grid-template-columns:1fr}}
@media(max-width:560px){h1{font-size:40px}.cards,.facts,.steps{grid-template-columns:1fr}.links{display:none}.card .big{font-size:24px}#map{height:380px}.sec{padding:32px 16px}.wrap,.nav{padding-left:16px;padding-right:16px}}
.btn3d{display:inline-block;background:var(--jaune);color:var(--nuit);font-weight:800;text-decoration:none;padding:10px 18px;border-radius:99px;margin:0 0 14px;box-shadow:0 4px 14px #0b2a5533}