:root{font-family:Arial,Helvetica,sans-serif;color:#162536;background:#eff3f7;font-synthesis:none;--cyan:#159ec2}
*{box-sizing:border-box}body{margin:0;font-size:16px;line-height:1.5}
.masthead{background:#162536;color:#fff;border-bottom:3px solid #39bfdf;padding:28px max(24px,calc((100vw - 1040px)/2))}
.brand{display:flex;align-items:center;gap:14px;font-size:20px;font-weight:600}.brand svg{width:34px;height:34px;color:#56cbe6;flex:none}
main{max-width:1088px;margin:0 auto;padding:64px 24px 48px}h1{font-size:clamp(28px,3.6vw,40px);line-height:1.2;font-weight:500;letter-spacing:-.025em;margin:0 0 32px}
.calculators{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.calculator{display:flex;flex-direction:column;min-height:300px;gap:0;padding:32px;background:#fff;border:1px solid #d9e1e9;border-top:4px solid var(--cyan);border-radius:8px;text-decoration:none;color:inherit;transition:border-color .15s,box-shadow .15s}
.calculator:hover{border-color:#159ec2;box-shadow:0 8px 24px #16253612}.calculator:focus-visible{outline:3px solid #159ec2;outline-offset:5px}.category{font-size:14px;color:#617087}.calculator h2{font-size:32px;line-height:1.2;font-weight:500;letter-spacing:-.02em;margin:18px 0 14px}.calculator p{color:#617087;margin:0 0 28px;max-width:360px}.open{display:block;align-self:flex-start;margin-top:auto;background:#166581;color:#fff;padding:11px 16px;border-radius:5px;font-size:16px;font-weight:500}
@media(max-width:640px){.masthead{padding:20px}.brand{font-size:18px}main{padding:36px 20px}.calculators{grid-template-columns:1fr;gap:20px}.calculator{min-height:260px;padding:26px}.calculator h2{font-size:30px}}
@media(prefers-reduced-motion:reduce){.calculator{transition:none}}