*{box-sizing:border-box}html,body{margin:0;height:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#1a1a1a;background:#f0f0f0}#stage{position:relative;width:100vw;height:100vh;overflow:hidden}#viewer,#viewer canvas{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;display:block}#dropzone{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;pointer-events:none;z-index:5}#dropzone.hidden{display:none}.dropzone-inner{pointer-events:auto;text-align:center;padding:3rem 4rem;border:2px dashed #b7b0a8;border-radius:16px;background:#ffffffbf;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.dropzone-inner h1{margin:0 0 .5rem;font-size:1.4rem;font-weight:650}.dropzone-inner p{margin:.35rem 0;color:#555}.dropzone-inner .hint{font-size:.8rem;color:#999}code{background:#e7e2db;padding:.05em .35em;border-radius:4px;font-size:.9em}.pick-btn{display:inline-block;margin-top:1rem;padding:.5rem 1.1rem;background:#1a1a1a;color:#fff;border-radius:8px;cursor:pointer;font-size:.9rem}#stage.dragging:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;z-index:10;border:3px dashed #4a90d9;background:#4a90d914;pointer-events:none}#logo{display:block;width:181px;height:40px;margin:0 auto .3rem;pointer-events:none}#panel{position:absolute;top:16px;right:16px;z-index:6;width:230px;display:flex;flex-direction:column;gap:.7rem;padding:1rem;background:#ffffffe6;border:1px solid #ddd;border-radius:12px;box-shadow:0 4px 18px #0000001a;font-size:.82rem}.control{display:flex;flex-direction:column;gap:.25rem}.control>span{color:#666;font-weight:550}.control input[type=range]{width:100%}.control input[type=color]{width:100%;height:28px;padding:0;border:1px solid #ccc;border-radius:6px;background:none}.control select{padding:.35rem;border-radius:6px;border:1px solid #ccc;background:#fff}#panel button{margin-top:.3rem;padding:.5rem;border:none;border-radius:8px;background:#1a1a1a;color:#fff;cursor:pointer;font-size:.82rem}#panel button:hover{background:#333}#status{position:absolute;bottom:16px;left:16px;z-index:6;padding:.4rem .8rem;border-radius:8px;background:#000000b8;color:#fff;font-size:.8rem;max-width:60vw}#status:empty{display:none}#status{display:flex;align-items:center;gap:.5rem}#status.error{background:#b23b3b}.spinner{width:13px;height:13px;flex:none;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}