.floating-share{position:fixed;left:12px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:10px;z-index:9999}.fs-btn{width:44px;height:44px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);cursor:pointer;transition:transform .12s ease,box-shadow .12s ease}.fs-btn:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}@media (max-width:900px){.floating-share{left:8px;gap:8px}.fs-btn{width:40px;height:40px}}.floating-share-hidden{position:fixed;left:12px;top:50%;transform:translateY(-50%);z-index:9999}.fs-show-btn{width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);cursor:pointer}.fs-hide{opacity:.7;font-size:18px;line-height:1}.fs-copy.copied{background:var(--color-success,#1db954);color:white}@media (max-width:640px){.floating-share{left:8px;top:50%;bottom:auto;transform:translateY(-50%);flex-direction:column;gap:8px;padding:4px;background:transparent}.fs-btn{width:36px;height:36px}.floating-share-hidden{left:8px;top:50%;transform:translateY(-50%)}}