:root{color-scheme:light;--bg:#f7f8f6;--panel:#fff;--panel-muted:#eef3f2;--text:#17201d;--muted:#5a6964;--border:#d7dfdc;--accent:#0f766e;--accent-strong:#0b4f4a;--amber:#b7791f;--rose:#b83258;--blue:#2563eb;--shadow:0 18px 45px rgba(30,42,38,.08)}*{box-sizing:border-box}html{min-width:320px}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;letter-spacing:0}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.site-header{align-items:center;background:hsla(90,12%,97%,.96);border-bottom:1px solid var(--border);display:flex;gap:24px;justify-content:space-between;min-height:72px;padding:14px clamp(18px,5vw,64px);position:-webkit-sticky;position:sticky;top:0;z-index:10}.brand{gap:12px;min-width:190px}.brand,.brand-mark{align-items:center;display:inline-flex}.brand-mark{background:var(--accent);border-radius:8px;color:#fff;font-size:13px;font-weight:800;height:38px;justify-content:center;width:38px}.brand small,.brand strong{display:block}.brand small{color:var(--muted);font-size:12px;margin-top:2px}.top-nav{align-items:center;display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}.top-nav a{border:1px solid transparent;border-radius:8px;color:var(--muted);font-size:14px;padding:8px 10px}.top-nav a:hover{background:var(--panel-muted);border-color:var(--border);color:var(--text)}.main-shell{margin:0 auto;max-width:1180px;padding:34px clamp(18px,5vw,64px) 56px}.tool-header{display:grid;grid-gap:24px;gap:24px;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);margin-bottom:28px}.eyebrow{color:var(--accent-strong);font-size:13px;font-weight:800;letter-spacing:.08em;margin:0 0 10px;text-transform:uppercase}h1{font-size:clamp(36px,5vw,64px);letter-spacing:0;line-height:1;margin:0;max-width:820px}.lede{color:var(--muted);font-size:18px;line-height:1.6;margin:18px 0 0;max-width:720px}.metric-strip{align-self:end;background:var(--panel);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow);display:grid;grid-gap:1px;gap:1px;overflow:hidden}.metric-strip div{background:#fff;display:grid;grid-gap:4px;gap:4px;padding:16px}.metric-strip span{color:var(--muted);font-size:12px;text-transform:uppercase}.metric-strip strong{font-size:22px}.workspace{display:grid;grid-gap:18px;gap:18px;grid-template-columns:minmax(280px,420px) minmax(0,1fr);align-items:start}.data-table,.method-box,.panel,.result-panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow)}.panel{padding:20px}.result-panel{min-height:420px;padding:20px}.panel h2,.result-panel h2,.section-title{font-size:20px;line-height:1.2;margin:0 0 16px}.control-grid{display:grid;grid-gap:14px;gap:14px}.field{display:grid;grid-gap:6px;gap:6px}.field label{color:var(--muted);font-size:13px;font-weight:700}.field input,.field select{background:#fff;border:1px solid var(--border);border-radius:8px;color:var(--text);min-height:44px;padding:0 12px;width:100%}.field input:focus,.field select:focus{border-color:var(--accent);outline:3px solid rgba(15,118,110,.14)}.segmented{display:grid;grid-gap:8px;gap:8px;grid-template-columns:repeat(auto-fit,minmax(72px,1fr))}.segmented button{background:#fff;border:1px solid var(--border);border-radius:8px;cursor:pointer;min-height:40px}.segmented button[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:#fff}.primary-button{background:var(--accent);border:0;border-radius:8px;color:#fff;cursor:pointer;font-weight:800;min-height:48px;padding:0 16px;width:100%}.primary-button:hover{background:var(--accent-strong)}.result-grid{display:grid;grid-gap:12px;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr))}.result-card{background:var(--panel-muted);border:1px solid var(--border);border-radius:8px;min-height:112px;padding:14px}.result-card span{color:var(--muted);display:block;font-size:12px;font-weight:800;text-transform:uppercase}.result-card strong{display:block;font-size:clamp(24px,4vw,34px);line-height:1.15;margin-top:10px;overflow-wrap:anywhere}.cost-bars{display:grid;grid-gap:12px;gap:12px;margin-top:18px}.bar-row{display:grid;grid-gap:8px;gap:8px}.bar-label{color:var(--muted);display:flex;font-size:13px;justify-content:space-between}.bar-track{background:#dde7e4;border-radius:999px;height:12px;overflow:hidden}.bar-fill{background:var(--accent);height:100%}.bar-fill.amber{background:var(--amber)}.bar-fill.rose{background:var(--rose)}.bar-fill.blue{background:var(--blue)}.assumptions{color:var(--muted);font-size:13px;line-height:1.6;margin:16px 0 0}.content-band{margin-top:34px}.quick-links{display:grid;grid-gap:12px;gap:12px;grid-template-columns:repeat(4,minmax(0,1fr))}.tool-list{display:grid;grid-gap:10px;gap:10px}.tool-list-item{align-items:center;background:var(--panel-muted);border:1px solid var(--border);border-radius:8px;display:flex;gap:16px;justify-content:space-between;padding:14px}.tool-list-item 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