:root{color-scheme:dark;--bg: #0b0d10;--panel: rgba(18, 20, 26, .82);--border: rgba(255, 255, 255, .1);--text: #e7eaf0;--muted: #9aa3b2;--accent: #4da3ff}*{box-sizing:border-box}[hidden]{display:none!important}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Roboto,Arial,sans-serif;overflow:hidden}#viewerContainer{position:absolute;inset:0;touch-action:none;background:#050607}#viewerContainer canvas{display:block;width:100%;height:100%;outline:none}.overlay{position:fixed;z-index:10;user-select:none}.overlay.top-left{top:12px;left:12px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.overlay.bottom-left{left:12px;bottom:12px;max-width:calc(100vw - 24px)}.overlay.center{top:50%;left:50%;transform:translate(-50%,-50%);text-align:center}.overlay.full{position:absolute;inset:0;z-index:20;display:flex;align-items:center;justify-content:center}.brand{font-size:14px;font-weight:600;letter-spacing:.5px;color:var(--text);padding:6px 10px;background:var(--panel);border:1px solid var(--border);border-radius:8px}button{appearance:none;border:1px solid var(--border);background:var(--panel);color:var(--text);border-radius:8px;padding:6px 12px;font-size:13px;cursor:pointer;backdrop-filter:blur(6px);transition:background .15s,border-color .15s}button:hover{background:#4da3ff2e;border-color:#4da3ff80}button:active{transform:translateY(1px)}.stats{font-size:12px;line-height:1.6;color:var(--muted);background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:8px 12px;backdrop-filter:blur(6px);font-variant-numeric:tabular-nums;word-break:break-all}.stats b{color:var(--text);font-weight:600}.spinner{width:34px;height:34px;margin:0 auto 14px;border-radius:50%;border:3px solid rgba(255,255,255,.15);border-top-color:var(--accent);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#loadingText{color:var(--muted);font-size:14px}.card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:26px 30px;max-width:min(560px,calc(100vw - 32px));backdrop-filter:blur(10px)}.card h2{margin:0 0 12px;font-size:18px}.card p{margin:10px 0;font-size:14px;line-height:1.7;color:var(--muted)}.card code,.card .mono{font-family:Consolas,Menlo,Courier New,monospace;background:#ffffff0f;border-radius:5px;padding:2px 6px;color:#9fcbff;word-break:break-all}.card strong{color:var(--text)}.card .hint{margin-top:16px;font-size:12px;color:#6d7686}.actions{margin-top:6px}#dropOverlay{pointer-events:none}.drop-box{pointer-events:none;border:2px dashed rgba(77,163,255,.7);background:#0d1118bf;color:var(--accent);font-size:16px;border-radius:14px;padding:26px 40px;backdrop-filter:blur(4px)}@media (max-width: 600px){.brand{display:none}.card{padding:18px 20px}}