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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>gj Storage</title> <style> body { font-family: 'Segoe UI', sans-serif; background-color: #f4f7fa; margin: 0; padding: 0; } header { background-color: #2d3e50; color: white; padding: 20px; text-align: center; } main { max-width: 800px; margin: 30px auto; padding: 20px; background: white; box-shadow: 0 0 10px rgba(0,0,0,0.1); border-radius: 10px; } h1 { margin-top: 0; } input[type="file"] { display:...