Create an impactful year-end sale banner with a luxurious, festive theme. Use large, metallic gold typography for 'YEAR-END SALE' with bold red accents. The background should be dark and sleek, featuring subtle confetti or glitter effects to evoke a celebratory mood. Add dynamic diagonal lines or swooshes to give a sense of movement and excitement. Below, highlight 'Up to 60% Off' in a vibrant red or white font. Include light flares or glowing effects to make the design feel modern and eye-catching, perfect for a high-end, festive sale. --s 750  --style raw