:root{--ink:#0b2545;--text2:#4a5d78;--caption:#5f7189;--aqua:#007a96;--link:#00667e;--glint:#34d1e8;--mist:#f3f7fa;--tile:#e0f4f8;--line:#e3eaf0;--field:#c5d2dd;--ok-bg:#ddf3e4;--ok-text:#14693a;--warn-bg:#fdf0dc;--warn-text:#8a3f05;--shadow:0 1px 2px #0b25450d, 0 10px 28px #0b254512;--rounded:ui-rounded, "SF Pro Rounded", Nunito, -apple-system, system-ui, sans-serif;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--ink);background:var(--mist);-webkit-font-smoothing:antialiased;margin:0;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Inter,system-ui,sans-serif;font-size:17px;line-height:1.55}h1,h2,h3{letter-spacing:-.02em;line-height:1.12}h1{letter-spacing:-.03em;margin:.3em 0 .25em;font-size:clamp(34px,4vw,52px);font-weight:800}h2{margin:1.6em 0 .5em;font-size:clamp(26px,2.6vw,36px);font-weight:800}h3{margin:1.2em 0 .3em;font-size:20px;font-weight:700}a{color:var(--aqua)}a:hover{color:var(--link)}.shell{max-width:1200px;margin:0 auto;padding:0 32px}@media (width<=600px){.shell{padding:0 20px}}.page{padding-top:24px;padding-bottom:72px}.skip{position:absolute;left:-999px}.skip:focus{z-index:10;background:#fff;border-radius:8px;padding:8px 12px;top:12px;left:12px}.top{border-bottom:1px solid var(--line);background:#fff}.top-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:4px 24px;min-height:72px;padding-top:12px;padding-bottom:12px;display:flex}.brand{color:var(--ink);letter-spacing:-.2px;align-items:center;gap:10px;font-size:19px;font-weight:700;text-decoration:none;display:inline-flex}.brand img{border-radius:8px}.top nav,.foot nav{flex-wrap:wrap;align-items:center;gap:0 26px;font-size:15px;font-weight:600;display:flex}.top nav a,.foot nav a{color:var(--ink);padding:11px 0;text-decoration:none}.top nav a[aria-current=page]{box-shadow:inset 0 -2px 0 var(--aqua)}.top nav a:hover,.foot nav a:hover{color:var(--aqua)}.top nav a.pill{background:var(--aqua);color:#fff;border-radius:22px;align-items:center;height:44px;padding:0 20px;display:inline-flex}.top nav a.pill:hover{background:var(--link);color:#fff}@media (width<=760px){.top nav{gap:0 16px;font-size:14px}.top nav a.pill{display:none}}.foot{border-top:1px solid var(--line);background:#fff;padding:40px 0}.foot-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px 32px;display:flex}.foot nav a.mail{color:var(--aqua)}.legal{border-top:1px solid var(--line);color:var(--caption);margin:22px 0 0;padding-top:20px;font-size:14px;line-height:22px}.eyebrow{letter-spacing:.8px;color:var(--link);text-transform:uppercase;font-size:13px;font-weight:700;line-height:18px;display:block}.lead{color:var(--text2);max-width:680px;font-size:19px;line-height:29px}.card{box-shadow:var(--shadow);background:#fff;border-radius:24px;padding:28px}.btn{background:var(--aqua);color:#fff;height:56px;font:inherit;cursor:pointer;border:0;border-radius:28px;justify-content:center;align-items:center;gap:8px;padding:0 26px;font-size:17px;font-weight:600;text-decoration:none;display:inline-flex;box-shadow:0 10px 24px #007a964d}.btn:hover{background:var(--link);color:#fff}.btn.ghost{color:var(--ink);box-shadow:var(--shadow);background:#fff}.hint{color:var(--caption);font-size:15px}.crumbs{color:var(--caption);font-size:14px}.crumbs a{color:var(--caption);text-decoration:none}.crumbs a:hover{color:var(--aqua)}label{color:var(--ink);margin:16px 0 8px;font-size:15px;font-weight:600;display:block}input,select{width:100%;height:52px;font:inherit;border:1.5px solid var(--field);color:var(--ink);background:#fff;border-radius:14px;padding:0 16px}input::placeholder{color:#9aabbd}input:focus,select:focus,.btn:focus-visible,a:focus-visible,.seg button:focus-visible{outline:3px solid var(--glint);outline-offset:2px}.row{grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:0 16px;display:grid}.seg-source{opacity:0;pointer-events:none;width:1px;height:1px;position:absolute}.seg{background:var(--mist);border:1px solid var(--line);border-radius:16px;gap:4px;padding:4px;display:flex}.seg.grid2{grid-template-columns:1fr 1fr;display:grid}.row>div:has(.grid2){grid-column:1/-1}.seg button{min-width:0;min-height:44px;color:var(--text2);font:inherit;cursor:pointer;hyphens:none;overflow-wrap:normal;background:0 0;border:0;border-radius:12px;flex:1 1 0;padding:6px 8px;font-size:15px;font-weight:600;line-height:1.2}.seg button[aria-checked=true]{color:var(--ink);background:#fff;box-shadow:0 1px 2px #0b254514,0 4px 10px #0b254514}.error{color:var(--warn-text);background:var(--warn-bg);border-radius:14px;margin-top:16px;padding:12px 16px;font-weight:500}form.calc{box-shadow:none;background:0 0;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);align-items:start;gap:0 24px;margin-top:28px;padding:0;display:grid}form.calc>:not(.result):not(.warnbox){grid-column:1}form.calc>.fields{box-shadow:var(--shadow);background:#fff;border-radius:24px;padding:8px 28px 28px}form.calc>.result,form.calc:after{grid-area:1/2/span 20;position:sticky;top:24px}form.calc:has(>.result[hidden]):after{content:"Fill in the numbers on the left. Your answer shows up here.";background:var(--ink);color:#b4c4d8;border-radius:28px;padding:32px;font-size:17px;line-height:26px;display:block}@media (width<=860px){form.calc{grid-template-columns:1fr}form.calc>.result,form.calc:after{grid-area:auto/1;margin-top:16px;position:static}}.result{background:var(--ink);color:#fff;border-radius:28px;padding:32px;box-shadow:0 2px 4px #0b25451a,0 30px 60px #0b25453d}.result .big{font-family:var(--rounded);letter-spacing:-.02em;font-size:clamp(36px,4vw,52px);font-weight:800;line-height:1.05}.result .sub{color:#b4c4d8;margin-top:10px;font-size:17px;line-height:26px}.result .error,.result .warn{color:#ffc46b;background:#4a3413}.next{margin-top:28px}.next h2{margin-top:0;font-size:26px}.next ol{counter-reset:n;gap:14px;margin:0;padding:0;list-style:none;display:grid}.next li{counter-increment:n;color:var(--text2);align-items:flex-start;gap:14px;font-size:17px;line-height:26px;display:flex}.next li:before{content:counter(n);background:var(--tile);height:32px;color:var(--link);font-family:var(--rounded);border-radius:16px;flex:0 0 32px;justify-content:center;align-items:center;font-size:16px;font-weight:800;display:flex}.prose{max-width:760px}.prose h2{font-size:24px}.prose p,.prose li{color:var(--text2);font-size:17px;line-height:27px}