#pwa-install-btn {
      display: none; /* mostrato via JS */
      align-items: center;
      gap: 8px;
      padding: 10px 18px;
      background-color: #008099;
      color: #fff;
      border: none;
      border-radius: 8px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      box-shadow: 0 2px 6px rgba(0,0,0,0.2);
      transition: background 0.2s;
    }
    #pwa-install-btn:hover { background-color: #006677; }
    #pwa-install-btn svg { flex-shrink: 0; }

    /* ── BANNER IOS ── */
    #ios-install-banner {
      display: none;
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      width: calc(100% - 40px);
      max-width: 380px;
      background: #fff;
      border: 1px solid #ddd;
      border-radius: 14px;
      padding: 16px;
      box-shadow: 0 4px 20px rgba(0,0,0,0.15);
      z-index: 9999;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }
    #ios-install-banner .ios-banner-header {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 10px;
    }
    #ios-install-banner img {
      width: 44px;
      height: 44px;
      border-radius: 10px;
    }
    #ios-install-banner strong {
      font-size: 15px;
      color: #111;
    }
    #ios-install-banner p {
      font-size: 13px;
      color: #444;
      margin: 0 0 4px;
      line-height: 1.5;
    }
    #ios-install-banner .ios-step {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      color: #333;
      margin-top: 6px;
    }
    #ios-install-banner .ios-step svg { flex-shrink: 0; }
    #ios-close-btn {
      position: absolute;
      top: 10px;
      right: 12px;
      background: none;
      border: none;
      font-size: 20px;
      color: #888;
      cursor: pointer;
      line-height: 1;
    }