ボトムシート

<div class="d11-03-04-phone">
          <div class="d11-03-04-screen">
            <div class="d11-03-04-content">コンテンツ</div>
            <button class="d11-03-04-open" id="d11-03-04-open">開く</button>
            <div class="d11-03-04-overlay" id="d11-03-04-ov"></div>
            <div class="d11-03-04-sheet" id="d11-03-04-sheet">
              <div class="d11-03-04-handle" id="d11-03-04-handle"></div>
              <h4 class="d11-03-04-title">オプション</h4>
              <button class="d11-03-04-act">共有する</button>
              <button class="d11-03-04-act">お気に入り</button>
              <button class="d11-03-04-close" id="d11-03-04-close">閉じる</button>
            </div>
          </div>
        </div>

.d11-03-04-phone{width:190px;height:240px;border-radius:24px;border:6px solid #1f2937;background:#fff;position:relative;overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.15)}
        .d11-03-04-screen{position:absolute;inset:0;background:#f1f5f9}
        .d11-03-04-content{position:absolute;top:20px;left:0;right:0;text-align:center;color:#94a3b8;font-size:13px}
        .d11-03-04-open{position:absolute;left:50%;top:80px;transform:translateX(-50%);border:0;background:#4f46e5;color:#fff;padding:8px 18px;border-radius:20px;font-size:12px;cursor:pointer}
        .d11-03-04-overlay{position:absolute;inset:0;background:rgba(15,23,42,.4);opacity:0;pointer-events:none;transition:opacity .3s}
        .d11-03-04-overlay.d11-03-04-on{opacity:1;pointer-events:auto}
        .d11-03-04-sheet{position:absolute;left:0;right:0;bottom:0;background:#fff;border-radius:18px 18px 0 0;padding:8px 14px 16px;transform:translateY(100%);transition:transform .35s cubic-bezier(.2,.8,.2,1);box-shadow:0 -6px 20px rgba(0,0,0,.15)}
        .d11-03-04-sheet.d11-03-04-up{transform:translateY(0)}
        .d11-03-04-handle{width:40px;height:4px;background:#cbd5e1;border-radius:2px;margin:4px auto 10px;cursor:grab;touch-action:none}
        .d11-03-04-title{margin:0 0 8px;font-size:13px;color:#1e293b}
        .d11-03-04-act{display:block;width:100%;text-align:left;border:0;background:#f1f5f9;border-radius:8px;padding:8px 10px;margin-bottom:6px;font-size:12px;color:#334155;cursor:pointer}
        .d11-03-04-close{display:block;width:100%;border:0;background:none;color:#94a3b8;font-size:11px;padding:4px;cursor:pointer}

(function(){
        var root=document.getElementById('item-11-03-04');if(!root)return;
        var open=root.querySelector('#d11-03-04-open'),ov=root.querySelector('#d11-03-04-ov'),sheet=root.querySelector('#d11-03-04-sheet'),
            close=root.querySelector('#d11-03-04-close'),handle=root.querySelector('#d11-03-04-handle');
        function show(){sheet.classList.add('d11-03-04-up');ov.classList.add('d11-03-04-on');}
        function hide(){sheet.classList.remove('d11-03-04-up');ov.classList.remove('d11-03-04-on');sheet.style.transform='';}
        open.addEventListener('click',show);close.addEventListener('click',hide);ov.addEventListener('click',hide);
        var sy=0,dy=0,drag=false;
        handle.addEventListener('pointerdown',function(e){drag=true;sy=e.clientY;handle.setPointerCapture(e.pointerId);sheet.style.transition='none';});
        handle.addEventListener('pointermove',function(e){if(!drag)return;dy=Math.max(0,e.clientY-sy);sheet.style.transform='translateY('+dy+'px)';});
        handle.addEventListener('pointerup',function(){if(!drag)return;drag=false;sheet.style.transition='';if(dy>50)hide();else{sheet.style.transform='';}dy=0;});
      })();