:root{--bg-color:#ffffff;--text-primary:#111111;--text-secondary:#555555;--border-color:#e5e5e5;--skeleton-bg:#f0f0f0;--error-bg:#ffeeee;--error-text:#330000;--button-hover:#f5f5f5;--icon-color:#111111}[data-theme=dark]{--bg-color:#111111;--text-primary:#f0f0f0;--text-secondary:#a0a0a0;--border-color:#333333;--skeleton-bg:#222222;--error-bg:#331111;--error-text:#ffcccc;--button-hover:#222222;--icon-color:#f0f0f0;--accent-color:#dc2626;--accent-color-hover:#ef4444;--desscription-color:#238636}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);line-height:1.6;-webkit-font-smoothing:antialiased;transition:background-color .3s ease,color .3s ease}body,h1,h2,h3,h4{color:var(--text-primary)}h1,h2,h3,h4{font-weight:600;line-height:1.2;letter-spacing:-.02em;margin-bottom:1rem}h1{font-size:2.5rem}h2{font-size:1.5rem;border-bottom:1px solid 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