:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}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:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}#root{width:100%;max-width:none;margin:0;padding:0}.logo{height:6em;padding:1.5em;will-change:filter;transition:filter .3s}.logo:hover{filter:drop-shadow(0 0 2em #646cffaa)}.logo.react:hover{filter:drop-shadow(0 0 2em #61dafbaa)}@keyframes logo-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media(prefers-reduced-motion:no-preference){a:nth-of-type(2) .logo{animation:logo-spin infinite 20s linear}}.card{padding:2em}.read-the-docs{color:#888}.app{width:min(100%,1440px);margin:0 auto;padding:32px;box-sizing:border-box}.app-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:24px}.app-title{margin:0;font-size:clamp(2rem,4vw,3.5rem);line-height:1.1}.lang-button{flex:0 0 auto;white-space:nowrap}.section{margin-bottom:40px}.section-title{margin:0 0 16px;font-size:clamp(1.25rem,2vw,2rem)}.controls-grid{display:grid;grid-template-columns:repeat(4,minmax(180px,1fr));gap:16px;align-items:start;margin-bottom:24px}.control-group{min-width:0}.control-group label{display:block;margin-bottom:8px;font-weight:700}.control-group select,.control-group button,.control-group input{width:100%;box-sizing:border-box}.chart-shell{width:100%}.chart-shell--2d{height:620px}.chart-shell--3d{height:720px}.intro-section{margin-bottom:32px}.intro-heading{margin:0 0 16px;font-size:clamp(1.1rem,2vw,1.5rem);line-height:1.25}.intro-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.mobile-legend-toggle{display:none}.intro-card{margin:0;padding:14px 16px;border:1px solid rgba(255,255,255,.12);border-radius:12px;background:#ffffff0a;font-size:.95rem;line-height:1.5;font-weight:500}@media(max-width:1280px){.app{padding:24px}.controls-grid{grid-template-columns:repeat(3,minmax(180px,1fr))}.chart-shell--2d{height:560px}.chart-shell--3d{height:640px}}@media(max-width:768px){.app{padding:20px}.app-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:24px}.app-title{margin:0;font-size:clamp(2rem,4vw,3.5rem);line-height:1.1}.lang-button{flex:0 0 auto;white-space:nowrap}.controls-grid{grid-template-columns:repeat(2,minmax(160px,1fr));gap:12px}.chart-shell--2d{height:460px}.chart-shell--3d{height:520px}.intro-section{margin-bottom:24px}.intro-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.intro-card{padding:12px 14px;font-size:.92rem;line-height:1.45}}@media(max-width:420px){.app{padding:12px}.app-header{flex-direction:row;align-items:center;justify-content:space-between;gap:8px}.app-title{font-size:2.2rem}.lang-button{padding:8px 12px;font-size:.95rem}.controls-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.control-group{min-width:0}.control-group select,.control-group button,.control-group input{font-size:.9rem;padding:6px 8px}.control-group--full{grid-column:1 / -1}.chart-shell--2d{height:340px}.chart-shell--3d{height:420px}.section{margin-bottom:28px}.intro-grid{grid-template-columns:1fr}.intro-heading{font-size:1.05rem;margin-bottom:12px}.intro-card{padding:10px 12px;font-size:.88rem;line-height:1.4;border-radius:10px}.mobile-legend-toggle{display:inline-flex;align-items:center;justify-content:center;margin-bottom:12px;padding:6px 10px;font-size:.9rem}}