:root{--page: #f4f4f3;--surface: #ffffff;--text: #111111;--muted: #5c5c5a;--faint: #949492;--border: rgba(17, 17, 17, .08);--border-strong: rgba(17, 17, 17, .16);--hairline: #e4e4e2;--accent: #1a1a1a;--accent-hover: #000000;--accent-soft: rgba(17, 17, 17, .06);--bad: #3a3a3a;--bad-soft: rgba(17, 17, 17, .05);--shadow-sm: 0 1px 2px rgba(17, 17, 17, .05);--shadow-md: 0 8px 28px -12px rgba(17, 17, 17, .22);--radius: 5px;--radius-sm: 4px}*{box-sizing:border-box}html{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}body{margin:0;font-family:Helvetica Neue,Helvetica,Arial,Segoe UI,system-ui,sans-serif;color:var(--text);background:var(--page);line-height:1.5}.page{max-width:1080px;margin:0 auto;padding:56px 24px 80px}header{margin-bottom:36px}header h1{margin:0 0 8px;font-size:34px;font-weight:700;letter-spacing:-.028em;line-height:1.08}.subtitle{margin:0;color:var(--muted);font-size:16px;max-width:46ch}.layout{display:grid;grid-template-columns:360px 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ease,border-color .15s ease,transform .05s ease,box-shadow .15s ease}button:active{transform:translateY(1px)}button.primary{background:var(--accent);color:#fff;border:none;padding:13px;font-weight:600;font-size:15px;letter-spacing:-.006em;box-shadow:var(--shadow-sm)}button.primary:hover:not(:disabled){background:var(--accent-hover)}button.primary:disabled{opacity:.55;cursor:default}button.secondary{background:var(--surface);border:1px solid var(--border-strong);padding:10px 16px;font-weight:600;color:var(--text)}button.secondary:hover:not(:disabled){background:var(--page);border-color:var(--faint)}button.secondary:disabled{opacity:.55;cursor:default}button.remove{background:transparent;border:1px solid var(--border-strong);color:var(--faint);font-size:18px;line-height:1;padding:0 12px}button.remove:hover{border-color:var(--bad);color:var(--bad);background:var(--bad-soft)}.results{display:flex;flex-direction:column;gap:24px}.headline{text-align:center;padding:40px 24px;background:radial-gradient(120% 120% at 50% 0%,var(--accent-soft) 0%,transparent 60%),var(--surface)}.big-number{font-size:68px;font-weight:800;color:var(--accent);line-height:1;letter-spacing:-.03em}.big-label{font-size:16px;color:var(--muted);margin-top:10px;letter-spacing:-.006em}.worst-case{margin:18px 0 0;font-size:14px;color:var(--text)}.chart-card h2,.sensitivity-card h2{margin:0 0 4px;font-size:18px;font-weight:700;letter-spacing:-.014em}.hint{color:var(--faint);font-size:13px;margin:4px 0}.error{border-color:var(--border-strong);border-left:3px solid var(--text);background:var(--bad-soft);color:var(--text);font-size:14px}.placeholder{color:var(--faint);text-align:center;padding:64px 24px;font-size:15px;border-style:dashed;border-color:var(--border-strong);box-shadow:none}.sensitivity-card .secondary{margin-top:10px}.sensitivity-list{list-style:none;margin:22px 0 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