:root{--ink:#152b2b;--muted:#617575;--line:#dbe5e0;--paper:#f4f7f3;--accent:#087e71;--blue:#496dc5;--gold:#aa863e}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}header{display:flex;align-items:center;gap:42px;padding:17px 32px;background:#132e2c;color:white}a{color:inherit;text-decoration:none}.brand{font-weight:700;font-size:18px}nav{display:flex;gap:24px}nav a{color:#b4cbc5;padding:4px 0}nav a[aria-current]{color:white;border-bottom:2px solid #78d7b5}.pill{margin-left:auto;color:#c8e6d9;font-size:12px;border:1px solid #48615c;border-radius:20px;padding:4px 10px}main{max-width:1510px;margin:auto;padding:32px}.heading{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:24px}.eyebrow{color:var(--accent);font-weight:700;letter-spacing:2px;font-size:11px;margin:0 0 8px}h1{font-size:clamp(25px,3vw,36px);letter-spacing:-1px;line-height:1.2;margin:0 0 12px}h2{font-size:17px;line-height:1.35;margin:0 0 12px}p{margin:0 0 12px}.subtitle{color:var(--muted);font-size:15px;margin:0}.data-range{font-size:12px;color:var(--muted);text-align:right;max-width:250px}.card{background:white;border:1px solid var(--line);border-radius:12px;padding:21px;margin-bottom:18px}.strategy{background:#ebf2ed}.strategy summary,.assumptions summary{font-weight:650;cursor:pointer}.rules{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:18px}.rules strong{display:block;font-size:18px;margin-top:4px}.rules span{font-size:12px;color:var(--muted)}.note{font-size:12px;color:var(--muted);line-height:1.6;margin:8px 0 0}.layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:24px;align-items:start}.results{min-width:0}.controls{padding:20px;position:sticky;top:16px;max-height:calc(100vh - 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