:root{--color-bg: #ffffff;--color-surface: #f8fafc;--color-border: #e2e8f0;--color-text: #1e293b;--color-text-muted: #64748b;--color-primary: #16a34a;--color-primary-dark: #15803d;--color-primary-light: #dcfce7;--color-warning-bg: #fefce8;--color-warning-border: #fde047;--color-info-bg: #eff6ff;--color-info-border: #93c5fd;--font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-heading: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-6: 1.5rem;--space-8: 2rem;--space-12: 3rem;--space-16: 4rem;--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--container-max: 72rem;--content-max: 48rem}:root[data-theme=dark]{--color-bg: #0f172a;--color-surface: #1e293b;--color-border: #334155;--color-text: #e2e8f0;--color-text-muted: #94a3b8;--color-primary: #22c55e;--color-primary-dark: #bbf7d0;--color-primary-light: #14532d;--color-warning-bg: #422006;--color-warning-border: #a16207;--color-info-bg: #172554;--color-info-border: #1d4ed8;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .4);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .5), 0 2px 4px -2px rgb(0 0 0 / .5)}:root[data-theme=sepia]{--color-bg: #f4ecd8;--color-surface: #ece0c8;--color-border: #ddceac;--color-text: #433422;--color-text-muted: #7a6a52;--color-primary: #4d7c0f;--color-primary-dark: #3f6212;--color-primary-light: #e5e0c8;--color-warning-bg: #f0e6c8;--color-warning-border: #cbb26a;--color-info-bg: #e6e3d1;--color-info-border: #a9b08c}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:var(--font-body);background:var(--color-bg);color:var(--color-text);line-height:1.6;-webkit-font-smoothing:antialiased}img,video{max-width:100%;height:auto;display:block}a{color:var(--color-primary)}