:root{--primary: #10b981;--primary-dark: #059669;--secondary: #3b82f6;--bg-body: #f3f4f6;--bg-card: #ffffff;--text-main: #1f2937;--text-muted: #6b7280;--danger: #ef4444;--border-radius: 8px;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06)}*{box-sizing:border-box;margin:0;padding:0;font-family:Segoe UI,Roboto,Helvetica,Arial,sans-serif}body{background-color:var(--bg-body);color:var(--text-main);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}h1,h2,h3{font-weight:700;color:#111827;margin-bottom:.5rem}.gap-2{gap:.5rem}.gap-4{gap:1rem}.mt-4{margin-top:1rem}.mb-4{margin-bottom:1rem}button{cursor:pointer;border:none;padding:.6rem 1.2rem;border-radius:var(--border-radius);font-weight:600;transition:all 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