#oekaki-shiritori-game{max-width:500px;margin:20px auto;padding:20px;border:3px solid #f0f0f0;border-radius:15px;background:#fff;font-family:"Helvetica Neue",Arial,"Hiragino Kaku Gothic ProN","Hiragino Sans",Meiryo,sans-serif}#oekaki-shiritori-game h3{margin-top:0;color:#333;text-align:center}.canvas-container,.canvas-wrapper{margin:15px 0;text-align:center}#shiritori-canvas{max-width:100%;height:auto;background-color:#fff;box-shadow:0 0 10px rgba(0,0,0,.1)}.input-group,.draw-controls{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:15px;justify-content:center}.draw-controls input[type=text]{min-width:120px}#oekaki-shiritori-game input[type=text]{padding:10px;border:2px solid #ddd;border-radius:5px;flex-grow:1}#oekaki-shiritori-game button{padding:10px 20px;background-color:#4caf50;color:#fff;border:none;border-radius:5px;cursor:pointer;font-weight:700;transition:background .3s}#oekaki-shiritori-game button:hover{background-color:#45a049}#clear-canvas{background-color:#f44336 !important}#clear-canvas:hover{background-color:#da190b !important}#guess-result{text-align:center;font-weight:700;margin-top:10px}#word-hint{text-align:center;font-weight:700;color:#ff5722;font-size:1.1em}.oekaki-history-list{margin-top:40px}.history-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px}.history-item img{border-radius:5px}