#mmgScrollDownBtn{
    /* 15.08.2026: chat baloncuğu da right:20px;bottom:20px'te — birebir üst üste biniyordu.
       Kaydırma düğmesi 78px'e alındı (44px baloncuk + 14px boşluk). ⛔ 20px'e geri alma. */
    position:fixed; right:78px; bottom:20px; z-index:500;
    width:44px; height:44px; border-radius:50%; border:1px solid var(--hairline,#2A3448);
    background:var(--surface-2,#1B2536); color:var(--brass,#C6A15B);
    font-size:20px; line-height:1; cursor:pointer; display:flex; align-items:center; justify-content:center;
    box-shadow:0 8px 20px rgba(0,0,0,0.35); transition:opacity .2s ease, transform .2s ease;
    opacity:0; pointer-events:none;
  }
  #mmgScrollDownBtn.show{ opacity:1; pointer-events:auto; }
  #mmgScrollDownBtn:hover{ transform:translateY(2px); }