@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Noto+Sans+KR:wght@400;500;600;700;800&display=swap');
:root{--ink:#1b302c;--green:#20785f;--muted:#72807a;--line:#dde3da}*{box-sizing:border-box}body{margin:0;background:#f5f5ed;color:var(--ink);font-family:Inter,'Noto Sans KR',sans-serif;font-size:14px}button,input,select{font:inherit}button,a,input,select,summary{touch-action:manipulation}button{cursor:pointer}header{height:88px;max-width:1240px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:0 32px;border-bottom:1px solid var(--line)}.brand{color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:10px;font-size:25px}.brand span{font-size:9px;letter-spacing:2px;margin-left:12px;color:var(--muted)}nav button{border:1px solid #c9d1c6;border-radius:6px;padding:10px 16px;background:transparent}main{max-width:1176px;margin:auto}.intro{padding:62px 0 42px}.eyebrow,.small{font-size:11px;letter-spacing:1.5px;font-weight:700;color:var(--green)}h1{font-size:46px;line-height:1.3;letter-spacing:-2px;margin:18px 0}p{line-height:1.8}.intro p{font-size:16px;color:var(--muted)}.tags{display:flex;gap:18px;margin-top:24px;font-size:12px;color:#596961}.tags span:before{content:'✓';color:var(--green);margin-right:7px}.workspace{display:grid;grid-template-columns:250px 1fr;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}aside{background:#edf0e6;padding:28px 18px}aside>.small{margin:0 12px 20px}#tools button{width:100%;display:flex;align-items:center;gap:12px;border:0;background:none;text-align:left;padding:18px 14px;border-radius:7px;color:#56665f;margin-bottom:5px;font-weight:600}#tools button.active{background:var(--ink);color:white}.icon{font-size:21px;width:26px}.aside-note{margin:58px 12px 0;border-top:1px solid #d3dbcc;padding-top:22px;font-size:12px}.aside-note>span{display:block;font-size:24px;margin-bottom:12px}.aside-note p{color:var(--muted)}article{padding:32px}.panel-title{display:flex;align-items:center;justify-content:space-between}h2{font-size:25px;margin:9px 0}.badge{font-size:9px;letter-spacing:1px;background:#f3f5ee;padding:8px 10px;border-radius:4px}.muted{color:var(--muted);margin:8px 0 26px}.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}label{display:block;font-size:12px;font-weight:600;margin:0 0 9px}.field{margin-bottom:20px}.input-wrap{position:relative}input,select{width:100%;padding:14px;border:1px solid #d9e0d5;border-radius:6px;color:var(--ink);background:#fff;font-size:17px}input{padding-right:65px}input:focus,select:focus{outline:2px solid #72a98e;outline-offset:1px}.unit{position:absolute;right:14px;top:16px;color:var(--muted);font-size:12px}.hint{font-size:11px;color:var(--muted);margin-top:7px}.result{background:#edf3e9;border:1px solid #dce7d6;border-radius:9px;padding:24px;display:flex;flex-direction:column;min-height:236px}.value{font-size:43px;font-weight:700;letter-spacing:-2px;margin:27px 0 5px;color:#206149}.value span{font-size:17px;letter-spacing:0;margin-left:6px}.result p{font-size:12px;color:#637569;margin:4px 0 18px}.result button{margin-top:auto;background:transparent;border:0;border-top:1px solid #d2dfcc;padding:15px 0 0;text-align:left;color:#24674f;font-size:12px;font-weight:600}details{margin-top:25px;border-top:1px solid var(--line);padding-top:20px}summary{font-weight:600;font-size:12px;cursor:pointer}#formula{font-size:12px;line-height:1.9;color:var(--muted);margin-top:12px}.equation{background:#f5f6f1;padding:12px 16px;color:#355548;border-radius:5px;margin-bottom:9px}.note{font-size:11px;line-height:1.7;color:#7c877e;margin-top:22px;padding-left:12px;border-left:2px solid #c6d1c0}.coming{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:38px 0}.coming h3{font-size:19px;margin:9px 0 0}.coming>span{font-size:12px;color:var(--muted)}footer{display:flex;gap:20px;padding:27px 0 35px;color:var(--muted);font-size:11px}footer span:last-child{margin-left:auto}footer b{color:var(--ink)}@media(max-width:1250px){main{margin:0 32px}}@media(max-width:700px){header{height:72px;padding:0 20px}.brand{font-size:22px}.brand span{display:none}main{margin:0 20px}.intro{padding:36px 0 30px}h1{font-size:32px;letter-spacing:-1.5px}.intro p{font-size:13px}.tags{gap:13px;font-size:10px}.workspace{display:block}aside{padding:14px}.aside-note,aside>.small{display:none}#tools{display:grid;grid-template-columns:1fr 1fr;gap:4px}#tools button{padding:12px 9px;margin:0;font-size:11px;gap:6px}.icon{font-size:17px;width:20px}article{padding:23px 18px}h2{font-size:22px}.badge{display:none}.calc-grid{grid-template-columns:1fr;gap:4px}.result{min-height:210px}.value{margin-top:22px}.coming{display:block;padding:28px 0}.coming>span{display:block;margin-top:15px}footer{flex-wrap:wrap;gap:12px}footer span:last-child{margin-left:0;width:100%}}

nav{display:flex;align-items:center;gap:10px}nav select{width:auto;font-size:12px;padding:10px;background:transparent}.country-label{font-size:10px;margin:0;color:var(--muted)}@media(max-width:700px){header{height:auto;min-height:90px;flex-wrap:wrap;gap:12px;padding:15px 20px}nav{width:100%;justify-content:flex-end;gap:8px}nav select{flex:1}.country-label{font-size:10px}nav button{font-size:12px}.brand span{display:inline;font-size:8px}}

.tool-link{display:flex;gap:12px;padding:18px 14px;border-radius:7px;color:#56665f;text-decoration:none;font-weight:600;font-size:13px}.tool-link.active{background:var(--ink);color:white}.guide{background:white;border:1px solid var(--line);border-radius:14px;margin-top:24px;padding:28px 32px}.guide h2{font-size:21px}.guide h3{font-size:14px;margin-top:24px}.guide p{color:var(--muted)}.related{display:flex;flex-wrap:wrap;gap:8px}.related .tool-link{background:#edf0e6;color:var(--ink);padding:12px}@media(max-width:700px){.tool-link{padding:12px 9px;font-size:11px;gap:6px}.guide{padding:23px 18px}}