:root{--bg: #f9fafb;--fg: #111827;--muted: #6b7280;--primary: #1d4ed8;--primary-light: #3b82f6;--card: #ffffff;--border: #e5e7eb;--border-light: #f3f4f6;--shadow: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px 0 rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04)}*{box-sizing:border-box}html,body,#app{height:100%;margin:0}body{background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif;line-height:1.6}header{background:#fff;box-shadow:var(--shadow);padding:24px 0}header h1{margin:0;font-size:30px;font-weight:700;color:var(--primary);letter-spacing:-.025em}header p{margin:8px 0 0;color:var(--muted);font-size:16px}.container{max-width:1600px;margin:0 auto;padding:0 16px}@media (min-width: 768px){.container{padding:0 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