:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#213547;background-color:#f8fafc;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--primary: #3b82f6;--primary-hover: #2563eb;--secondary: #64748b;--bg-card: #ffffff;--border: #e2e8f0;--text-main: #1e293b;--text-muted: #64748b;--shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1)}@media (prefers-color-scheme: dark){:root{color:#f8fafc;background-color:#0f172a;--bg-card: #1e293b;--border: #334155;--text-main: #f8fafc;--text-muted: #94a3b8}}body{margin:0;display:flex;min-width:320px;min-height:100vh}#root{width:100%;max-width:1200px;margin:0 auto;padding:2rem}h1{font-size:2.5rem;font-weight:800;margin-bottom:.5rem;background:linear-gradient(to right,#3b82f6,#8b5cf6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.subtitle{color:var(--text-muted);font-size:1.1rem;margin-bottom:2rem}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:1rem;padding:1.5rem;box-shadow:var(--shadow);margin-bottom:1.5rem}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem}.input-group{margin-bottom:1rem}label{display:block;font-size:.875rem;font-weight:500;margin-bottom:.5rem;color:var(--text-main)}input{width:100%;padding:.5rem .75rem;border-radius:.5rem;border:1px solid var(--border);background:var(--bg-card);color:var(--text-main);font-size:1rem;box-sizing:border-box}input:focus{outline:2px solid var(--primary);border-color:transparent}.btn{background:var(--primary);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:.5rem;font-weight:600;cursor:pointer;transition:background .2s}.btn:hover{background:var(--primary-hover)}.result-item{display:flex;justify-content:space-between;padding:.75rem 0;border-bottom:1px solid var(--border)}.result-item:last-child{border-bottom:none}.result-label{color:var(--text-muted);font-weight:500}.result-value{font-weight:700;font-variant-numeric:tabular-nums}.intuition li{margin-bottom:.5rem;list-style:none;position:relative;padding-left:1.5rem}.intuition li:before{content:"→";position:absolute;left:0;color:var(--primary)}.lang-switch{position:absolute;top:1rem;right:1rem;font-size:.875rem;cursor:pointer;background:none;border:1px solid var(--border);padding:.25rem .75rem;border-radius:9999px;color:var(--text-muted);transition:all .2s}.lang-switch:hover{border-color:var(--primary);color:var(--primary)}.text-primary{color:var(--primary)}.text-muted{color:var(--text-muted)}.input-field{margin-bottom:1.25rem}.container{width:100%}@media (max-width: 768px){#root{padding:1rem}h1{font-size:1.75rem}.grid{grid-template-columns:1fr}.chart-container{height:300px}.step-btn{width:40px;height:40px}}.slider-container{position:relative;width:100%;height:48px;display:flex;align-items:center;padding:0 10px;box-sizing:border-box}.slider-track-bg{position:relative;width:100%;height:6px;background:var(--border);border-radius:3px;z-index:0;overflow:hidden}.slider-track-fill{position:absolute;height:100%;z-index:1}.slider-native{position:absolute;left:0;width:100%;background:transparent!important;-moz-appearance:none;appearance:none;-webkit-appearance:none;z-index:2;margin:0;cursor:pointer}.slider-native::-webkit-slider-thumb{-webkit-appearance:none;height:20px;width:20px;border-radius:50%;background:var(--primary);cursor:pointer;border:3px solid white;box-shadow:0 2px 4px #0003}.slider-zero-mark{position:absolute;left:50%;width:2px;height:12px;background:var(--secondary);z-index:1;transform:translate(-50%)}.step-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);background:var(--bg-card);color:var(--text-main);border-radius:6px;cursor:pointer;transition:all .2s}.step-btn:hover{border-color:var(--primary);color:var(--primary);background:#3b82f60d}.delta-input{width:80px!important;text-align:center;font-weight:700;font-size:1rem}.broken-bar{position:relative;overflow:hidden}.broken-bar:after{content:"";position:absolute;top:35%;left:-20%;width:140%;height:16px;background:var(--bg-card);transform:rotate(-10deg);border-top:3px solid rgba(255,255,255,.8);border-bottom:3px solid rgba(255,255,255,.8);z-index:2;box-shadow:0 0 10px #0000001a}@media (prefers-color-scheme: dark){.broken-bar:after{background:#1e293b;border-top:3px solid #1e293b;border-bottom:3px solid #1e293b}}.zigzag{position:absolute;top:35%;left:0;width:100%;height:14px;z-index:3;background-image:linear-gradient(135deg,transparent 25%,var(--border) 25%,var(--border) 50%,transparent 50%,transparent 75%,var(--border) 75%,var(--border) 100%);background-size:6px 6px;opacity:.6}