:root{--ink:#14221b;--muted:#5f7067;--line:#dbe4de;--green:#176b47;--bg:#f4f7f5}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Pretendard,Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}header{background:#102b20;color:#fff;padding:18px max(22px,calc((100% - 980px)/2))}header a{color:#fff;text-decoration:none;font-weight:850;font-size:19px;letter-spacing:-.05em}header i{color:#abe3c4;font-style:normal}main{max-width:900px;margin:auto;padding:48px 22px 70px}.crumb{font-size:13px;color:#557363;text-decoration:none}h1{font-size:clamp(34px,6vw,52px);letter-spacing:-.07em;line-height:1.05;margin:15px 0}h2{font-size:25px;letter-spacing:-.045em;margin:42px 0 12px}.lead{font-size:17px;color:var(--muted);margin:0 0 28px}.tool{background:#fff;border:1px solid var(--line);border-radius:17px;padding:25px;box-shadow:0 1px 2px #102b200a}.fields{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}label{display:block;font-size:13px;font-weight:750;color:#415b4d}input{width:100%;height:43px;border:1px solid #cfdad3;border-radius:8px;margin-top:5px;padding:0 10px;font:inherit;outline:0}input:focus{border-color:var(--green);box-shadow:0 0 0 3px #dcefe4}.calculate{border:0;border-radius:8px;background:var(--green);color:#fff;padding:11px 18px;margin-top:18px;font:inherit;font-weight:800;cursor:pointer}.result{margin-top:17px;background:#edf8f1;border-radius:10px;padding:16px}.result small{display:block;color:#547362}.result strong{display:block;font-size:27px;letter-spacing:-.05em}.result span{font-size:13px;color:#547362}article{background:#fff;border:1px solid var(--line);border-radius:14px;padding:23px;margin-top:16px}li{margin:7px 0}.notice{font-size:13px;color:#6f5520;background:#fff7e5;border:1px solid #efd49e;border-radius:10px;padding:13px 15px;margin-top:26px}footer{max-width:900px;margin:auto;padding:0 22px 35px;color:#708077;font-size:12px}@media(max-width:560px){.fields{grid-template-columns:1fr}main{padding-top:34px}.tool{padding:19px}}