.go-top {
        position: fixed;
        bottom: 30px;
        right: 20px;
        width: 50px;
        height: 50px;
        background: #10B981;
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        transition: all 0.3s ease;
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        font-size: 24px;
        border: none;
        outline: none;
    }
    .go-top:hover {
        background: #059669;
        transform: translateY(-3px);
        box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
    }
    .go-top.show {
        opacity: 1;
        visibility: visible;
    }
    @media (max-width: 768px) {
        .go-top {
            width: 44px;
            height: 44px;
            bottom: 20px;
            right: 15px;
            font-size: 20px;
        }
    }