:root{--font-mono: "Inconsolata", monospace;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", sans-serif;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--text-5xl: 3rem;--spacing-xs: .5rem;--spacing-sm: .75rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--spacing-3xl: 4rem;--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--color-background: #FAFAFA;--color-card-bg: #FFFFFF;--color-text-primary: #2C3E50;--color-text-secondary: #7F8C8D;--color-text-muted: #BDC3C7;--color-border: #E8E8E8;--color-positive: #87C55F;--color-negative: #F89C74;--color-pastel-blue: #BAE1FF;--color-pastel-pink: #FFB3BA;--color-pastel-purple: #DDA0DD;--color-pastel-green: #B5EAD7;--color-pastel-yellow: #FFFACD}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--color-background);color:var(--color-text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}#root{width:100%;min-height:100vh}h1,h2,h3,h4,h5,h6{font-family:var(--font-sans);line-height:1.2;font-weight:600}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}input[type=number]{-moz-appearance:textfield;appearance:textfield}.container{max-width:1200px;margin:0 auto;padding:var(--spacing-2xl) var(--spacing-lg);min-height:100vh;display:flex;flex-direction:column}.header{text-align:center;margin-bottom:var(--spacing-3xl)}.title{font-size:var(--text-5xl);font-weight:700;margin-bottom:var(--spacing-md);color:var(--color-text-primary)}.subtitle{font-size:var(--text-xl);color:var(--color-text-secondary);max-width:600px;margin:0 auto}.main{flex:1}.calculators-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:var(--spacing-xl);margin-bottom:var(--spacing-3xl)}.calculator-card{background:var(--color-card-bg);border:3px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--spacing-xl);transition:all .3s ease;display:flex;flex-direction:column;justify-content:space-between;min-height:200px;box-shadow:var(--shadow-sm)}.calculator-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:inherit}.card-content{flex:1}.card-title{font-size:var(--text-2xl);font-weight:600;margin-bottom:var(--spacing-md);color:var(--color-text-primary)}.card-description{font-size:var(--text-base);color:var(--color-text-secondary);line-height:1.6;margin-bottom:var(--spacing-lg)}.card-footer{display:flex;justify-content:flex-end}.card-link{font-family:var(--font-mono);font-size:var(--text-base);font-weight:600;color:var(--color-text-primary);transition:color .2s ease}.calculator-card:hover .card-link{color:var(--color-positive)}.footer{text-align:center;padding:var(--spacing-xl) 0;margin-top:auto}.footer p{font-size:var(--text-sm);color:var(--color-text-muted)}.footer-link{color:var(--color-text-secondary);font-weight:600;transition:color .2s ease}.footer-link:hover{color:var(--color-text-primary)}@media(max-width:768px){.title{font-size:var(--text-4xl)}.subtitle{font-size:var(--text-lg)}.calculators-grid{grid-template-columns:1fr}.container{padding:var(--spacing-xl) var(--spacing-md)}}