:root{--bg-primary: #0a0a0b;--bg-secondary: #111113;--bg-tertiary: #18181b;--bg-hover: #1f1f23;--bg-active: #27272a;--text-primary: #fafafa;--text-secondary: #a1a1aa;--text-tertiary: #71717a;--accent-primary: #6366f1;--accent-secondary: #818cf8;--accent-glow: rgba(99, 102, 241, .15);--border-color: #27272a;--border-subtle: #1f1f23;--success: #22c55e;--warning: #f59e0b;--error: #ef4444;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px var(--accent-glow);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;font-size:14px;line-height:1.5;background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--bg-active);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}.container{max-width:1200px;margin:0 auto;padding:0 24px}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.gap-1{gap:4px}.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}.gap-6{gap:24px}.gap-8{gap:32px}.p-2{padding:8px}.p-3{padding:12px}.p-4{padding:16px}.p-6{padding:24px}.p-8{padding:32px}.text-sm{font-size:12px}.text-base{font-size:14px}.text-lg{font-size:16px}.text-xl{font-size:18px}.text-2xl{font-size:24px}.text-3xl{font-size:32px}.font-medium{font-weight:500}.font-semibold{font-weight:600}.font-bold{font-weight:700}.text-secondary{color:var(--text-secondary)}.text-tertiary{color:var(--text-tertiary)}.text-accent{color:var(--accent-primary)}.demo-box{width:80px;height:80px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;box-shadow:var(--shadow-glow)}.demo-area{min-height:300px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-xl);display:flex;align-items:center;justify-content:center;padding:32px;position:relative;overflow:hidden}.demo-card{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:20px;transition:border-color var(--transition-fast)}.demo-card:hover{border-color:var(--accent-primary)}.code-block{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:16px;font-family:SF Mono,Fira Code,monospace;font-size:13px;overflow-x:auto;color:var(--text-secondary)}.code-block .keyword{color:#c678dd}.code-block .string{color:#98c379}.code-block .function{color:#61afef}.code-block .number{color:#d19a66}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;border-radius:var(--radius-md);font-weight:500;transition:all var(--transition-fast)}.btn-primary{background:var(--accent-primary);color:#fff}.btn-primary:hover{background:var(--accent-secondary);box-shadow:var(--shadow-glow)}.btn-secondary{background:var(--bg-tertiary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--text-tertiary)}.btn-ghost{background:transparent}.btn-ghost:hover{background:var(--bg-hover)}