:root{--primary: 220 70% 50%;--primary-dark: 220 70% 40%;--primary-light: 220 70% 95%;--secondary: 160 60% 45%;--secondary-dark: 160 60% 35%;--secondary-light: 160 60% 95%;--accent: 280 60% 60%;--background: 210 20% 98%;--surface: 0 0% 100%;--surface-hover: 210 20% 96%;--text-main: 220 20% 20%;--text-muted: 220 10% 50%;--text-light: 220 10% 95%;--border: 220 15% 90%;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--font-sans: "Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:hsl(var(--background));color:hsl(var(--text-main));line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}.card{background-color:hsl(var(--surface));border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:2rem;border:1px solid hsl(var(--border));transition:transform .2s ease,box-shadow .2s ease}.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-weight:600;transition:all .2s ease;border:none}.btn-primary{background-color:hsl(var(--primary));color:#fff}.btn-primary:hover{background-color:hsl(var(--primary-dark))}.btn-secondary{background-color:hsl(var(--secondary));color:#fff}.btn-secondary:hover{background-color:hsl(var(--secondary-dark))}.input-group{margin-bottom:1.5rem}.input-label{display:block;font-size:.875rem;font-weight:500;color:hsl(var(--text-main));margin-bottom:.5rem}.input-field{width:100%;padding:.75rem;border-radius:var(--radius-md);border:1px solid hsl(var(--border));background-color:hsl(var(--surface));font-size:1rem;transition:border-color .2s}.input-field:focus{outline:none;border-color:hsl(var(--primary));box-shadow:0 0 0 3px hsl(var(--primary) / .1)}.slider-container{margin-top:.5rem}.slider{width:100%;height:6px;background:hsl(var(--border));border-radius:3px;outline:none;-webkit-appearance:none}.slider::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:hsl(var(--primary));cursor:pointer;border:2px solid white;box-shadow:var(--shadow-sm);transition:transform .1s}.slider::-webkit-slider-thumb:hover{transform:scale(1.1)}.page-header{text-align:center;margin-bottom:3rem}.page-title{font-size:2.5rem;font-weight:800;color:hsl(var(--primary-dark));margin-bottom:1rem;letter-spacing:-.025em}.page-subtitle{font-size:1.125rem;color:hsl(var(--text-muted));max-width:600px;margin:0 auto}.grid-2{display:grid;grid-template-columns:1fr;gap:2rem}@media(min-width:768px){.grid-2{grid-template-columns:1fr 1fr}}.result-value{font-size:2rem;font-weight:700;color:hsl(var(--secondary))}