@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--color-primary: #3B82F6;--color-primary-hover: #2563EB;--color-background: #F3F4F6;--color-surface: #FFFFFF;--color-text: #1F2937;--color-text-secondary: #6B7280;--color-border: #E5E7EB;--color-correct: #22C55E;--color-present: #EAB308;--color-absent: #9CA3AF;--color-key-bg: #D1D5DB;--color-key-text: #1F2937;--font-family: "Inter", sans-serif;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-full: 9999px;--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)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--color-background);color:var(--color-text);line-height:1.5;-webkit-font-smoothing:antialiased}button{cursor:pointer;border:none;background:none;font-family:inherit}a{text-decoration:none;color:inherit}.container{max-width:600px;margin:0 auto;padding:0 var(--spacing-md);width:100%}.full-height{min-height:100vh;display:flex;flex-direction:column}.flex-center{display:flex;align-items:center;justify-content:center}.grid-center{display:grid;place-items:center}.hidden{display:none}