:root{
  /* Palette claire inspirée de ton ACCUEIL_VITRINE */
  --bg-1:#f7faff;
  --bg-2:#edf4ff;
  --card:#ffffff;
  --text:#0f172a;       /* slate-900 */
  --muted:#64748b;      /* slate-500 */
  --border:#e5e7eb;     /* gray-200 */
  --shadow:0 8px 28px rgba(15,23,42,.08);
  --radius:16px;

  --primary:#10b981;    /* vert d'action */
  --secondary:#3b82f6;  /* bleu accent */
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background:
    radial-gradient(100% 100% at 0% 0%, var(--bg-2) 0%, transparent 50%),
    radial-gradient(90% 100% at 100% 0%, #eef6ff 0%, transparent 55%),
    linear-gradient(180deg, var(--bg-1), #f5f9ff 60%, #f6f8ff);
  color:var(--text);
  min-height:100dvh;
}

/* Top small bar (retour) */
.topbar{position:sticky;top:0;z-index:50;display:flex;justify-content:flex-start;padding:10px 18px}
.btn-ghost-sm{
  text-decoration:none;border:1px solid #dbe3f3;border-radius:10px;padding:6px 10px;background:#ffffffa6;
  color:#0f172a;font-size:13px;backdrop-filter:blur(6px);box-shadow:0 2px 8px rgba(15,23,42,.08)
}
.btn-ghost-sm:hover{border-color:#c9d6ee}

/* Containers */
.container{max-width:1180px;margin:0 auto;padding:24px}
.section{margin:28px 0}

/* Header + Nav */
.header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 0 14px;border-bottom:1px solid rgba(2,6,23,.06)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:#0f172a}
.brand-badge{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#60a5fa,#a78bfa); color:white; font-weight:900; box-shadow:0 4px 10px rgba(59,130,246,.25)}
.nav{display:flex;gap:18px}
.nav a{
  color:#475569;text-decoration:none;padding:8px 14px;border-radius:999px;border:1px solid transparent;
}
.nav a:hover{color:#0f172a;background:#fff;border-color:#e5e7eb;box-shadow:0 6px 18px rgba(15,23,42,.06)}
.nav a[aria-current="page"]{color:#0f172a;background:#ffffff;border-color:#e5e7eb;box-shadow:0 6px 18px rgba(15,23,42,.06)}

/* Hero */
.hero{
  background:linear-gradient(135deg,#3b82f6 0%, #6366f1 60%, #8b5cf6 100%);
  color:#fff;border-radius:18px;padding:24px;box-shadow:0 12px 28px rgba(59,130,246,.25);
  margin-top:18px;
}
.hero .title{color:#fff;margin:0 0 8px}
.hero .subtitle{color:#eaf2ff;margin-bottom:16px}
.hero .btn{box-shadow:none;border-color:transparent}
.hero .btn.btn-accent{background:#10b981;color:#fff}
.hero .btn{background:#f1f5f9;color:#0f172a}

/* Titles */
.title{font-size:36px;line-height:1.15;margin:8px 0 12px}
.subtitle{color:var(--muted);margin:0 0 10px;font-size:16px}

/* Grid + Cards */
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:18px;
  box-shadow:var(--shadow);
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover{transform:translateY(-2px);border-color:#d6d9e3;box-shadow:0 12px 28px rgba(15,23,42,.10)}
.card a{color:inherit;text-decoration:none;display:block}
.card h3{margin:6px 0 8px;font-size:18px}
.card p{margin:0;color:#5b687f;font-size:14px;line-height:1.5}

/* Buttons */
.btn{
  appearance:none;border:1px solid #e5e7eb;border-radius:999px;
  padding:10px 16px;background:#ffffff;color:#0f172a;
  text-decoration:none;display:inline-flex;align-items:center;gap:8px;
  box-shadow:0 4px 10px rgba(15,23,42,.06);
}
.btn:hover{border-color:#cfd7e6;box-shadow:0 0 0 3px rgba(59,130,246,.08)}
.btn-accent{background:var(--primary);color:#fff;border-color:transparent}
.btn-ghost{background:transparent}

/* Footer */
.footer{border-top:1px solid rgba(2,6,23,.06);padding:18px 0;color:#55637c;font-size:14px;margin-top:24px}