:root{--bg: #020617;--surface: #0f172a;--surface-raised: #1e293b;--border: #334155;--border-strong: #475569;--text: #f1f5f9;--text-muted: #94a3b8;--accent: #6eb4f0;--accent-soft: rgba(110, 180, 240, .14);--accent-glow: rgba(110, 180, 240, .35);--canvas-bg: #020617;--shadow-md: 0 12px 40px rgb(0 0 0 / .35);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--font-sans: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;--font-mono: "IBM Plex Mono", ui-monospace, "Cascadia Code", monospace}*,*:before,*:after{box-sizing:border-box}body{background:var(--bg);background-image:radial-gradient(ellipse 80% 42% at 50% 0%,rgba(110,180,240,.09),transparent 72%);color:var(--text);font-family:var(--font-sans);line-height:1.5;margin:0;min-height:100vh}button{font:inherit}