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900px;--nav-height: 80px;--font-serif: "Crimson Pro", "Noto Serif SC", serif;--font-sans: "Inter", "Noto Sans SC", sans-serif;--transition-speed: .3s}[data-theme=dark]{--bg-color: #121212;--section-bg: #1e1e1e;--text-color: #e9ecef;--secondary-color: #adb5bd;--accent-color: #4ade80;--border-color: #2d2d2d;--card-shadow: 0 4px 6px -1px rgba(0, 0, 0, .3), 0 2px 4px -1px rgba(0, 0, 0, .2);--navbar-bg: rgba(18, 18, 18, .85)}*{box-sizing:border-box;margin:0;padding:0;transition:background-color var(--transition-speed),color var(--transition-speed),border-color var(--transition-speed)}body{font-family:var(--font-sans);background-color:var(--bg-color);color:var(--text-color);line-height:1.7;-webkit-font-smoothing:antialiased}a{color:var(--accent-color);text-decoration:none;transition:opacity .2s ease}a:hover{opacity:.8}.container{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}section{padding:8rem 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