*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #646ef6;--primary-hover: #3b47ef;--secondary-color: #757575;--accent-color: #ff9800;--background-color: #fafafa;--surface-color: #ffffff;--text-primary: #212121;--text-secondary: #757575;--border-color: #e0e0e0;--border-radius: 8px;--shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px 0 rgba(0, 0, 0, .06);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--transition: all .2s ease-in-out}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-weight:400;line-height:1.5;color:var(--text-primary);background:#fff;min-height:100vh;padding:.5rem}.container{max-width:1200px;margin:0 auto;width:100%}.main-layout{display:grid;grid-template-columns:400px 1fr;gap:1.5rem;align-items:start}h1{font-weight:700;font-size:2rem;text-align:center;margin-bottom:.25rem;background:var(--primary-color);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}h2{font-weight:600;font-size:1.25rem;color:var(--text-primary);margin-bottom:1rem}header{text-align:center;margin-bottom:1.5rem;padding:1rem 0}header p{font-size:1rem;color:var(--text-secondary);max-width:600px;margin:0 auto}section{margin-bottom:1rem}button{background:var(--primary-color);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:var(--border-radius);font-weight:500;font-size:.95rem;cursor:pointer;transition:var(--transition);box-shadow:var(--shadow-sm);text-transform:none;font-family:inherit}button:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}button:active{transform:translateY(0);box-shadow:var(--shadow-sm)}@media(max-width:1024px){.main-layout{grid-template-columns:1fr;gap:1rem}}@media(max-width:768px){body{padding:.5rem}h1{font-size:2rem}header{margin-bottom:2rem;padding:1rem 0}header p{font-size:1rem;padding:0 1rem}}.arrow-container{position:relative;display:flex;align-items:center;justify-content:space-between;margin:20px 0;height:50px}.double-arrow{position:absolute;top:50%;left:0;transform:translateY(-50%);height:2px;background-color:#000}.double-arrow:before,.double-arrow:after{content:"";position:absolute;top:50%;transform:translateY(-50%);width:0;height:0;border-style:solid}.double-arrow:before{left:-10px;border-width:5px 10px 5px 0;border-color:transparent black transparent transparent}.double-arrow:after{right:-10px;border-width:5px 0 5px 10px;border-color:transparent transparent transparent black}.label{font-family:Montserrat,sans-serif;font-size:14px}.label.left{position:absolute;left:0;top:50%;transform:translateY(-50%)}.label.right{position:absolute;right:0;top:50%;transform:translateY(-50%)}.range-label{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-family:Montserrat,sans-serif;font-size:12px;background-color:#fff;padding:2px 5px;border:1px solid black;border-radius:3px;pointer-events:none}