:root{--bg: #fafaf9;--text: #1e293b;--text-muted: #64748b;--user-a: #6366f1;--user-b: #f59e0b;--max-width: 900px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}.app{max-width:var(--max-width);margin:0 auto;padding:0 20px}.scene{min-height:100vh;display:flex;flex-direction:column;justify-content:center;padding:80px 0;opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}.scene--visible{opacity:1;transform:translateY(0)}.scene__text{max-width:640px;margin:0 auto 48px;text-align:center}.scene__title{font-size:28px;font-weight:700;margin-bottom:16px;letter-spacing:-.02em}.scene__title--hero{font-size:56px;letter-spacing:-.03em}.scene__prose{font-size:18px;color:var(--text-muted);line-height:1.7}.scene__prose p{margin-bottom:12px}.scene__chart{width:100%;display:flex;justify-content:center}.scene__chart svg{overflow:visible}.legend{display:flex;gap:24px;justify-content:center;margin-top:16px;font-size:14px;color:var(--text-muted)}.legend__item{display:flex;align-items:center;gap:6px}.legend__swatch{width:12px;height:12px;border-radius:2px}.legend__toggle{background:none;border:1px solid #e2e8f0;border-radius:4px;padding:2px 10px;font-size:13px;color:var(--text-muted);cursor:pointer;transition:all .2s ease}.legend__toggle:hover{border-color:var(--text-muted)}.legend__toggle--active{background:var(--text);color:var(--bg);border-color:var(--text)}@media(max-width:900px){.app:before{content:"Best viewed on desktop";display:block;text-align:center;padding:12px;background:#fef3c7;color:#92400e;font-size:14px;position:sticky;top:0;z-index:200}}