body{margin:8px;font-family:system-ui,sans-serif;background:#fff;color:#111}.an,#player.an,#player264.an{display:none}.khoi{margin-bottom:8px}.loi{color:#b00020;font-weight:700}.ghi-chu{color:#666;font-size:12px}#text{line-height:2em;font-weight:700}#man:focus{outline:2px solid #3b82f6}.thanh{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:4px;font-size:13px}body.nhung{margin:0;overflow:hidden}body.nhung #man{display:flex;flex-direction:column;height:100vh}body.nhung #man.an{display:none}body.nhung #man .thanh{padding:4px 6px;margin:0;background:#f3f4f6;border-bottom:1px solid #e5e7eb}body.nhung #player,body.nhung #player264{flex:1 1 auto;min-height:0;width:100%;height:100%;object-fit:contain;border:0;background:#111}body.nhung .khoi:not(#man){padding:16px}body.nhung:not(.debug) #do,body.nhung:not(.debug) #nhat-ky{display:none}#player,#player264{max-width:100%;cursor:default;border:1px solid #ccc;display:block}#do{font:12px monospace;margin:4px 0}#nhat-ky{font:11px monospace;max-height:160px;overflow:auto;background:#f4f4f4}