.scroll-buttons {
    position: fixed;
    bottom: 10px;
    right: 10px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 1000;
}

.scroll-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    color: white;
    font-weight: bold;
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    border: none;
    position: relative;
    overflow: hidden;
    opacity: 0.92;
}

.scroll-btn:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.15), transparent);
    border-radius: 50%;
}

.scroll-btn:hover {
    transform: translateX(-5px) scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
    opacity: 1;

}

.scroll-btn:active {
    transform: translateY(2px) scale(0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);

}

#top-btn {
    background: linear-gradient(135deg, #efbe74, #e28b01);
}
#top-btn:hover {
    background: linear-gradient(135deg, #8cda7a, #608c52);
}

#center-btn {
    background: linear-gradient(135deg, #efbe74, #e28b01);
}
#center-btn:hover {
    background: linear-gradient(135deg, #8cda7a, #608c52);
}

/*#bottom-btn {*/
/*    background: linear-gradient(135deg, #2ecc71, #106534);*/
/*}*/

/* 平板端（≤1024px）：微调尺寸 */
@media (max-width: 1024px) {
    .scroll-btn { width: 55px; height: 55px; font-size: 12px; }
}

/* 手机端（≤768px）：缩小按钮 */
@media (max-width: 768px) {
    .scroll-buttons {
        bottom: 15px;
        right: 15px;
        gap: 10px; /* 减少按钮间距 */
    }
    .scroll-btn {
        width: 45px;
        height: 45px;
        font-size: 9px;
    }
}

/* 超小手机端（≤480px）：最小化按钮 */
@media (max-width: 480px) {
    .scroll-btn {
        width: 40px;
        height: 40px;
        font-size: 8px;
    }
    /* 隐藏"中部"按钮，只保留"顶部"（节省空间） */
    #center-btn { display: none; }
}