/* Custom volontairement limité au hero */
  #presentation-concept .hero-gradient {
    background:
      radial-gradient(circle at 12% 0%, rgba(198, 246, 77, .38), transparent 16rem),
      radial-gradient(circle at 95% 5%, rgba(255, 122, 50, .16), transparent 18rem),
      linear-gradient(135deg, #f7fff9 0%, #ffffff 58%, #f4fbf6 100%);
  }

  [data-bs-theme="dark"] #presentation-concept .hero-gradient {
    background:
      radial-gradient(circle at 12% 0%, rgba(198, 246, 77, .18), transparent 16rem),
      radial-gradient(circle at 95% 5%, rgba(255, 122, 50, .12), transparent 18rem),
      linear-gradient(135deg, #102018 0%, #121a15 58%, #0f1d16 100%);
  }

  #presentation-concept .hero-title {
    font-size: clamp(2.45rem, 12vw, 4.4rem);
    letter-spacing: -.055em;
  }
/*
 * PWA / smartphones avec zones système
 */

/* Header : encoche / Dynamic Island */
.app-header {
    padding-top: env(safe-area-inset-top, 0px);
}

/* Menu inférieur : barre Home iPhone */
.app-bottom-nav {
    padding-bottom: env(safe-area-inset-bottom, 0px);
}