:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;--bg: #ffffff;--bg-gradient: linear-gradient(to bottom right, #f8fafc, #eef2ff);--text: #111827;--muted-text: #6b7280;--surface: #ffffff;--surface-2: #f5f7ff;--border: #e0e7ff;--accent: #4338ca;--accent-contrast: #ffffff;--accent-soft: #e0e7ff;--header-bg: #4338ca;--header-text: #ffffff;--header-subtle: #e0e7ff;--footer-bg: #312e81;--footer-text: #ffffff;--select-bg: #eef2ff;--select-border: #d1d5db;--formula-bg: #ffffff;--chart-grid: #e0e7ff;--chart-axis: #4338ca;--tooltip-bg: rgba(255, 255, 255, .9);--tooltip-border: #4338ca;--success: #10b981;--info: #0ea5e9;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme: dark){:root{--bg: #0b1220;--bg-gradient: linear-gradient(to bottom right, #0b1220, #111827);--text: #e5e7eb;--muted-text: #9ca3af;--surface: #0f172a;--surface-2: #0f172a;--border: #334155;--accent: #a5b4fc;--accent-contrast: #0b1220;--accent-soft: #1f2937;--header-bg: #1e1b4b;--header-text: #e5e7eb;--header-subtle: #c7d2fe;--footer-bg: #0b0a2b;--footer-text: #e5e7eb;--select-bg: #111827;--select-border: #334155;--formula-bg: #0b1220;--chart-grid: #334155;--chart-axis: #a5b4fc;--tooltip-bg: rgba(17, 24, 39, .95);--tooltip-border: #a5b4fc;--success: #059669;--info: #0284c7}}body{margin:0;display:block;min-width:320px;min-height:100vh;color:var(--text);background:var(--bg)}a{font-weight:500;color:var(--accent);text-decoration:inherit}a:hover{color:color-mix(in oklab,var(--accent),white 15%)}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:var(--surface);color:var(--text);cursor:pointer;transition:border-color .25s,background-color .2s}button:hover{border-color:var(--accent)}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}