:root{--ink:#121b20;--paper:#fbfaf6;--muted:#627178;--line:#d9dedb;--signal:#dc6c38;--sea:#007a78;--pale:#e8f2ef;--max:1200px}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.5 ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.site-head,main,footer{max-width:var(--max);margin:auto}.site-head{display:flex;justify-content:space-between;align-items:center;padding:22px 24px;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}.brand{color:var(--ink);font-weight:800;text-decoration:none;font-size:19px}.brand span{font-weight:600}.intro{padding:76px 24px 42px;max-width:850px}.eyebrow{letter-spacing:.11em;font-size:12px;font-weight:800;color:var(--sea);margin:0 0 7px}h1{font-size:clamp(2.55rem,6vw,5.3rem);letter-spacing:-.055em;line-height:.96;margin:0 0 22px;max-width:850px}h2{font-size:clamp(1.35rem,3vw,2rem);letter-spacing:-.035em;line-height:1.1;margin:0 0 18px}.lede{font-size:1.18rem;max-width:690px;color:#37464b}.lede.small{font-size:.98rem;margin:0 0 18px}.callout{border-left:4px solid var(--signal);background:#f7ece6;padding:13px 15px;margin-top:28px;font-size:.93rem}.layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(330px,.88fr);gap:28px;padding:0 24px 70px}.panel,.results{border:1px solid var(--line);border-radius:8px;background:#fff;padding:28px}.panel-heading,.result-head{display:flex;justify-content:space-between;gap:18px;align-items:start}.text-button{border:0;background:transparent;color:var(--sea);font:inherit;font-weight:700;padding:0;cursor:pointer;text-decoration:underline;text-underline-offset:3px}.grid{display:grid;gap:15px;margin-top:22px}.grid.two{grid-template-columns:repeat(2,1fr)}.grid.three{grid-template-columns:repeat(3,1fr)}label{display:flex;flex-direction:column;font-size:.84rem;font-weight:700;gap:5px}.unit{font-weight:500;color:var(--muted)}input,select{width:100%;border:1px solid #b7c2bf;background:#fff;border-radius:4px;padding:10px;color:var(--ink);font:inherit}.hint,.notice{font-size:.82rem;color:var(--muted)}details{margin-top:24px;border-top:1px solid var(--line);padding-top:15px}summary{cursor:pointer;font-weight:800}.details-grid{margin-top:16px}.results{background:var(--ink);color:white;align-self:start;position:sticky;top:18px}.results .eyebrow,.results .text-button{color:#8ed3c5}.results .lede{color:#d6dfdc}.range{height:14px;border-radius:10px;background:#364247;display:grid;grid-template-columns:1fr 1fr 1fr;overflow:hidden;margin:24px 0}.range div:nth-child(1){background:#99cac1}.range div:nth-child(2){background:#e58250}.range div:nth-child(3){background:#efc289}.scenario-cards{display:grid;gap:10px}.scenario{border:1px solid #4b595c;border-radius:6px;padding:14px;display:grid;grid-template-columns:1fr auto;gap:10px}.scenario.base{border-color:var(--signal);background:#202d31}.scenario small,.scenario .label{color:#aec0bc}.scenario .cost{font-size:1.45rem;font-weight:800;align-self:center}.scenario dl{display:grid;grid-template-columns:1fr 1fr;margin:0;gap:5px 18px;font-size:.81rem}.scenario dt{color:#aec0bc}.scenario dd{margin:0;text-align:right}.assumptions{margin-top:20px}.assumptions ul{padding-left:18px;color:#d6dfdc;font-size:.85rem}.notice{color:#aec0bc;margin:20px 0 0}.evidence,.sources{max-width:var(--max);margin:auto;border-top:1px solid var(--line);padding:50px 24px}.evidence>p:not(.eyebrow),.sources li{max-width:820px}.model-table{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:26px 0}.model-card{border:1px solid var(--line);padding:17px;border-radius:7px;background:#fff}.model-card h3{margin:0 0 8px;font-size:1.05rem}.model-card p{font-size:.85rem;margin:7px 0;color:#435159}.model-card strong{font-size:1.2rem;color:var(--sea)}.sources ul{padding-left:20px}.sources a{color:var(--sea)}footer{padding:28px 24px;color:var(--muted);font-size:.8rem;border-top:1px solid var(--line)}@media(max-width:800px){.site-head{align-items:flex-start;flex-direction:column;gap:7px}.intro{padding-top:54px}.layout{grid-template-columns:1fr;padding-bottom:46px}.results{position:static}.grid.three{grid-template-columns:1fr}.model-table{grid-template-columns:1fr}.scenario dl{grid-column:span 2}.scenario .cost{grid-column:2;grid-row:1}.subscription-field{display:none}}@media(max-width:470px){.panel,.results{padding:21px}.grid.two{grid-template-columns:1fr}h1{font-size:2.7rem}}