@import url('https://fonts.googleapis.com/css2?family=Gowun+Batang:wght@400;700&family=Inter:wght@500;600;700&display=swap');
:root{--ink:#18211d;--muted:#66716b;--paper:#f4f1e8;--card:#fffdf7;--green:#285b43;--line:#d9d6ca}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"Noto Sans KR",sans-serif}.shell{width:min(1040px,calc(100% - 36px));margin:auto;padding:70px 0 38px}header{display:grid;grid-template-columns:1fr 1fr;align-items:end;margin-bottom:44px}.eyebrow{grid-column:1/-1;color:var(--green);font-size:12px;font-weight:700;letter-spacing:.18em;margin-bottom:20px}h1{font:700 clamp(42px,7vw,76px)/1.05 "Gowun Batang",serif;letter-spacing:-.055em;margin:0}h1 em{color:var(--green);font-style:normal}header p{color:var(--muted);font:400 18px/1.7 "Gowun Batang",serif;max-width:390px;margin:0 0 8px auto}.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:0 18px 60px rgba(34,45,38,.07)}label{display:block;font-size:13px;font-weight:700;margin-bottom:10px}.isbn-row,.setting{display:flex;gap:10px}.isbn-row input{font:700 clamp(23px,4vw,36px)/1 Inter,sans-serif;letter-spacing:.06em;min-width:0;flex:1}input,select{width:100%;border:1px solid var(--line);border-radius:12px;background:#fff;padding:15px;color:var(--ink);outline:none}input:focus,select:focus{border-color:var(--green);box-shadow:0 0 0 3px #285b4320}button{border:0;border-radius:12px;background:var(--green);color:white;font-weight:700;padding:0 24px;cursor:pointer}button:disabled{opacity:.5}.options{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:22px}.options label{margin:0}select{display:block;margin-top:10px}details{border-top:1px solid var(--line);margin-top:24px;padding-top:18px}summary{cursor:pointer;color:var(--muted);font-size:13px}.setting{margin-top:12px}.setting input{flex:1}.setting button{padding:0 18px}small{color:var(--muted);display:block;margin-top:8px}#status{min-height:22px;margin-top:18px;color:var(--green);font-size:14px}.loading:before{content:"";display:inline-block;width:10px;height:10px;border:2px solid #9ab3a5;border-top-color:var(--green);border-radius:50%;margin-right:8px;animation:spin .7s linear infinite}.error{color:#a23c2d!important}@keyframes spin{to{transform:rotate(360deg)}}.result{display:grid;grid-template-columns:300px 1fr;gap:24px;margin-top:24px}.book,article{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px}.book img{width:120px;max-height:175px;object-fit:cover;border-radius:5px;box-shadow:0 8px 24px #0002;margin-bottom:20px}.book span{color:var(--muted);font-size:11px}.book h2{font:700 25px/1.3 "Gowun Batang",serif;margin:8px 0}.book p{color:var(--muted);font-size:13px;line-height:1.6}.book a{color:var(--green);font-size:13px;font-weight:700}.article-head{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:16px}.article-head span{font-weight:700}.article-head button{background:transparent;color:var(--green);padding:8px}#content{white-space:pre-wrap;font:400 17px/1.9 "Gowun Batang",serif;padding-top:20px}footer{text-align:center;color:var(--muted);font-size:12px;margin-top:40px}@media(max-width:720px){.shell{padding-top:38px}header{display:block}header p{margin:24px 0 0}.isbn-row{display:block}.isbn-row button{width:100%;padding:16px;margin-top:10px}.options,.result{grid-template-columns:1fr}.book{display:flex;gap:18px}.book img{width:82px;height:120px;margin:0}.card{padding:20px}}