*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-family-body);font-size:var(--font-size-base);line-height:1.6;color:var(--color-text-primary);background-color:var(--color-bg-primary);transition:background-color var(--transition-normal),color var(--transition-normal);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-hover)}button{font-family:inherit;cursor:pointer;border:none;background:none}input,textarea,select{font-family:inherit;font-size:inherit}img{max-width:100%;display:block}::selection{background-color:var(--color-accent);color:#fff}:root{--color-bg-primary: #fafafa;--color-bg-secondary: #ffffff;--color-bg-tertiary: #f0f0f0;--color-text-primary: #1a1a1a;--color-text-secondary: #666666;--color-text-muted: #999999;--color-accent: #e74c3c;--color-accent-hover: #c0392b;--color-accent-soft: rgba(231, 76, 60, .1);--color-border: #e0e0e0;--color-success: #27ae60;--color-error: #e74c3c;--color-warning: #f39c12;--font-family-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;--font-family-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", "Courier New", monospace;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-size-4xl: 2.5rem;--font-size-hero: 3.5rem;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .1)}body.dark{--color-bg-primary: #0d0d0d;--color-bg-secondary: #1a1a1a;--color-bg-tertiary: #2a2a2a;--color-text-primary: #e0e0e0;--color-text-secondary: #a0a0a0;--color-text-muted: #666666;--color-accent: #e74c3c;--color-accent-hover: #ff6b5a;--color-accent-soft: rgba(231, 76, 60, .15);--color-border: #333333;--color-success: #2ecc71;--color-error: #e74c3c;--color-warning: #f39c12;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .5)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-primary)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}