:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.5;font-weight:400;color:var(--text, #1f2937);background-color:var(--bg, #f5f5f7);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box;margin:0;padding:0}body{margin:0;min-width:320px;min-height:100vh}#root{max-width:600px;margin:0 auto;padding:0}:root{--bg: #f5f5f7;--text: #1f2937;--text-heading: #111827;--text-secondary: #374151;--card-bg: #fff;--card-border: rgba(0, 0, 0, .08);--muted: #9ca3af;--muted-light: #6b7280;--border: #e5e7eb;--border-hover: #d1d5db;--surface: #f9fafb;--surface-hover: #f3f4f6;--accent: #2563eb;--accent-light: #93c5fd;--accent-bg: #dbeafe;--accent-dark: #1d4ed8;--accent-bg-subtle: #eff6ff;--success: #16a34a;--danger: #dc2626;--orange: #ea580c;--yellow: #ca8a04;--purple: #9333ea;--purple-bg: #f3e8ff;--purple-text: #7c3aed}[data-theme=dark]{--bg: 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