/* 短視頻yt shot影音限制寬度：確保畫面不會變大，維持直式比例 */
      .shorts-block { 
        max-width: 350px; /* 這裡控制畫面的大小 */
        margin: 0 auto; 
        position: relative; 
      }
      .shorts-aspect-ratio {
        position: relative; 
        width: 100%; 
        padding-bottom: 177.78%; /* 9:16 比例 */
        background: #000; 
        border-radius: 15px; 
        overflow: hidden; 
        box-shadow: 0 10px 25px rgba(0,0,0,0.15);
      }
      .shorts-aspect-ratio iframe { 
        position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; 
      }
      
      /* 導覽按鈕樣式 */
      .custom-nav {
        width: 40px; height: 40px; background: rgba(201, 9, 9, 0.85);
        border-radius: 50%; top: 50%; transform: translateY(-50%); opacity: 1;
        z-index: 10;
      }
      .custom-nav:hover { background: #c90909; }
      /* 按鈕移到影片左右兩側外 */
      .carousel-control-prev { left: -55px; }
      .carousel-control-next { right: -55px; }

      @media (max-width: 576px) {
        .carousel-control-prev { left: 5px; }
        .carousel-control-next { right: 5px; }
        .shorts-block { max-width: 280px; } /* 手機版再縮小一點 */
      }