body{margin:0;font-family:Arial,sans-serif;background:#111827;color:#f9fafb}.leaderboard{max-width:900px;margin:40px auto;padding:24px;background:#1f2937;border-radius:16px}table{width:100%;border-collapse:collapse}th,td{padding:12px;border-bottom:1px solid #374151;text-align:left}.security-note{color:#d1d5db}