:root{--primary: #2563eb;--primary-dark: #1d4ed8;--accent: #f97316;--text-main: #0f172a;--text-soft: #6b7280;--bg-page: #f3f4f6;--bg-section: #ffffff;--bg-alt: #f9fafb;--border-soft: #e5e7eb}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,SF Pro Text,Segoe UI,sans-serif;line-height:1.6;color:var(--text-main);background:radial-gradient(circle at 0% 0%,#e0f2fe 0,transparent 50%),radial-gradient(circle at 100% 0%,#fee2e2 0,transparent 50%),#f3f4f6}.app{min-height:100vh}.container{max-width:1120px;margin:0 auto;padding:0 20px}.header{position:sticky;top:0;z-index:40;background:#fffffff0;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid 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