*{box-sizing:border-box;margin:0;padding:0}:root{--primary: #2563eb;--primary-dark: #1d4ed8;--success: #16a34a;--danger: #dc2626;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-400: #9ca3af;--gray-500: #6b7280;--gray-600: #4b5563;--gray-700: #374151;--gray-800: #1f2937;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--gray-100);color:var(--gray-800);min-height:100vh;-webkit-tap-highlight-color:transparent}#root{min-height:100vh;display:flex;flex-direction:column}.app{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1;padding:16px 16px 80px;max-width:600px;margin:0 auto;width:100%}.bottom-nav{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--gray-200);display:flex;justify-content:space-around;padding:8px 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