:root{--bg-color: #f0f8ff;--text-color: #333;--primary-color: #ff7f50;--secondary-color: #87ceeb}*{box-sizing:border-box;user-select:none;-webkit-user-select:none;touch-action:pan-y}body{margin:0;padding:0;background-color:var(--bg-color);color:var(--text-color);font-family:Hiragino Maru Gothic ProN,Yu Rounded,sans-serif;height:100dvh;overflow:hidden;display:flex;flex-direction:column}.screen{display:none;flex-direction:column;align-items:center;justify-content:center;width:100%;height:100%;padding:20px;position:absolute;top:0;left:0}.screen.active{display:flex}#game-screen.active{padding:0;justify-content:flex-start}h1{font-size:42px;text-align:center;margin-bottom:40px;color:tomato;text-shadow:2px 2px 0 #fff,4px 4px 0 #ffdab9;line-height:1.2}h2{font-size:28px;margin-bottom:20px}.btn{background-color:var(--primary-color);color:#fff;border:none;border-radius:20px;padding:15px 30px;font-size:24px;font-weight:700;margin:10px;box-shadow:0 6px #cd5b45;cursor:pointer;transition:transform .1s,box-shadow .1s;width:80%;max-width:300px;text-align:center}.btn:active{transform:translateY(6px);box-shadow:0 0 #cd5b45}.btn.blue{background-color:#4682b4;box-shadow:0 6px #2f4f4f}.btn.blue:active{box-shadow:0 0 #2f4f4f}.btn.gray{background-color:#a9a9a9;box-shadow:0 6px #696969}.btn.gray:active{box-shadow:0 0 #696969}.btn.small-btn{padding:8px 16px;font-size:16px;border-radius:12px;box-shadow:0 4px #696969;width:auto;margin:0}.btn.small-btn:active{transform:translateY(4px);box-shadow:0 0 #696969}.btn:disabled{opacity:.5;cursor:not-allowed}#audio-controls{position:absolute;top:10px;right:10px;z-index:100;display:flex;gap:10px}#audio-controls button{background:#fffc;border:2px solid #ccc;border-radius:10px;padding:5px 10px;font-size:14px;font-weight:700;cursor:pointer}#stage-list{display:flex;flex-direction:column;width:100%;align-items:center;overflow-y:auto;max-height:60vh}#game-header{width:100%;height:60px;background-color:#fff;display:flex;align-items:center;padding:0 10px;box-shadow:0 2px 4px #0000001a;z-index:10}#stage-title{flex:1;text-align:center;font-size:20px;font-weight:700}#canvas-container{flex:1;width:100%;position:relative;overflow:hidden;background-color:#000}#game-canvas{width:100%;height:100%;object-fit:contain;display:block}#hud{width:100%;height:120px;background-color:#fff;border-top:4px solid #ccc;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:10px;z-index:10}#targets-container{display:flex;gap:15px;justify-content:center;width:100%}.target-item{display:flex;flex-direction:column;align-items:center;opacity:1;transition:opacity .3s}.target-item.found{opacity:.3}.target-icon{width:60px;height:60px;border-radius:10px;border:2px solid #ddd;background-color:#f9f9f9}.target-name{margin-top:5px;font-size:14px;font-weight:700}.overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#ffffffe6;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:50}.overlay.hidden{display:none}#zukan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;width:90%;max-width:400px;overflow-y:auto;max-height:60vh;padding-bottom:20px}.zukan-item{display:flex;flex-direction:column;align-items:center;background:#fff;border:2px solid #ddd;border-radius:12px;padding:10px}.zukan-item.locked{filter:grayscale(100%) brightness(.5)}.zukan-icon{width:60px;height:60px}