@charset "UTF-8";
:root{--ink:#163c47;--muted:#52656d;--paper:#fffdf9;--line:#dce4e6;--accent:#f7ba57;--soft:#eef5f5;--white:#fff;--danger:#a12c27;--radius:18px}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Pretendard","Malgun Gothic",sans-serif;font-size:17px;line-height:1.65}a{color:inherit;text-underline-offset:4px}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button,.button{border:1px solid var(--ink);background:var(--ink);color:white;min-height:50px;border-radius:10px;padding:12px 24px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;gap:8px}button:hover,.button:hover{filter:brightness(1.09)}button:disabled{cursor:wait;opacity:.6}.secondary{background:white;color:var(--ink);border-color:#acbbc0}.ghost{background:transparent;color:var(--ink);border-color:var(--line)}.danger{color:var(--danger);background:white;border-color:#d8a49f}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #d38b17;outline-offset:4px}[hidden]{display:none!important}.skip{position:fixed;top:-100px}.skip:focus{top:0;background:white;padding:14px;z-index:100}header{max-width:1240px;margin:auto;padding:22px 36px;display:flex;align-items:center;gap:25px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-size:24px;font-weight:800}.brand img{border-radius:9px;object-fit:cover}.brand small{font-size:10px;display:block;letter-spacing:2px;line-height:1.1}nav{margin-left:auto;display:flex;align-items:center;gap:26px}nav a{text-decoration:none;font-weight:700;font-size:16px}.nav-academy{border:1px solid #b8c8cb;border-radius:9px;padding:10px 17px}#logout{font-size:14px;padding:8px 14px;min-height:44px;background:white;color:var(--ink)}main{max-width:1168px;margin:auto;padding:42px 32px 80px;min-height:65vh}h1,h2,h3,p{margin-top:0}h1{font-size:38px;letter-spacing:-1.2px;line-height:1.35;margin-bottom:18px}h2{font-size:25px;line-height:1.4}h3{font-size:20px;line-height:1.4}p{margin-bottom:16px}.muted{color:var(--muted)}.eyebrow{font-size:14px;font-weight:800;letter-spacing:1px;color:#806029}.hero{display:grid;grid-template-columns:1.45fr 1fr;align-items:center;gap:40px;padding:30px 0 45px;min-height:450px}.hero h1{font-size:52px;line-height:1.28;letter-spacing:-2px}.hero p{font-size:19px;max-width:520px}.hero .actions{margin-top:34px}.hero-art{background:#f4ead3;border-radius:45% 45% 22px 22px;padding:18px;min-height:350px;display:flex;align-items:center;justify-content:center}.hero-art img{width:100%;max-height:360px;object-fit:contain}.actions{display:flex;gap:12px;flex-wrap:wrap}.actions>*{flex:0 1 auto}.hero .button{padding:16px 30px;font-size:19px}.welcome-note{padding:24px 0;border-top:1px solid var(--line);display:flex;gap:40px}.welcome-note div{flex:1}.welcome-note p{font-size:15px;margin:8px 0 0}.back{display:inline-block;margin-bottom:24px;font-size:15px;color:var(--muted)}.section-head{margin-bottom:32px}.filters,.tabs{display:flex;gap:10px;flex-wrap:wrap;margin:26px 0}.filters button,.tabs button{background:white;color:var(--ink);border:1px solid #b6c8cc;padding:9px 20px;min-height:46px}.filters .selected,.tabs .selected{background:var(--ink);color:white}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{border:1px solid var(--line);border-radius:var(--radius);background:white;padding:25px}.book-card{display:flex;flex-direction:column;text-decoration:none;transition:transform .15s}.book-card:hover{transform:translateY(-3px);border-color:#718e96}.book-number{height:130px;display:flex;align-items:center;justify-content:space-between;background:#eaf2f3;border-radius:12px;padding:20px;margin-bottom:22px}.book-number strong{font-size:67px;color:#34636e;line-height:1}.book-number span{max-width:130px;font-size:16px;font-weight:700}.reading .book-number{background:#fff0d2}.reading .book-number strong{color:#a7752f}.book-card h2{font-size:21px;margin-bottom:6px}.book-card p{font-size:16px;color:var(--muted)}.book-card .more{margin-top:auto;font-weight:700;font-size:15px}.tag{display:inline-block;font-size:13px;background:var(--soft);padding:4px 9px;border-radius:5px;margin-bottom:12px}.book-summary{display:grid;grid-template-columns:180px 1fr;gap:32px;align-items:center;margin:10px 0 36px}.book-summary .book-number{height:180px;margin:0;display:block}.book-summary .book-number strong{display:block;margin-bottom:10px}.book-summary h1{font-size:33px}.panel{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:30px;margin:22px 0}.sample{display:block;width:100%;border:1px solid var(--line);border-radius:12px}.notice{border-left:4px solid #d79c3e;background:#fff4dd;padding:17px 20px;font-size:16px}.empty{padding:34px;background:var(--soft);border-radius:14px}.empty h3{margin-bottom:9px}.empty p{color:var(--muted);margin-bottom:0}.resource-list{display:flex;flex-direction:column;gap:14px}.resource-row{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px;border:1px solid var(--line);border-radius:12px}.resource-row h3{margin:0 0 4px}.resource-row small{color:var(--muted)}.login{max-width:510px;margin:30px auto}.login .panel{padding:34px}.login h1{font-size:30px}.login button{width:100%}.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}.field label,legend{font-size:16px;font-weight:700}input,select,textarea{width:100%;border:1px solid #9eb3b8;border-radius:9px;min-height:50px;padding:11px 13px;color:var(--ink);background:white}textarea{min-height:100px}.code-input{font-family:monospace;letter-spacing:1px;font-size:18px}.hint{font-size:14px;color:var(--muted)}.error{color:var(--danger);font-size:15px;min-height:24px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}fieldset{border:1px solid var(--line);border-radius:10px;margin:15px 0;padding:16px}fieldset label{display:inline-flex;align-items:center;gap:8px;font-size:15px;margin:5px 16px 5px 0}input[type=checkbox]{width:21px;height:21px;min-height:21px;accent-color:var(--ink)}details{border-bottom:1px solid var(--line);padding:17px 0}summary{cursor:pointer;font-weight:700}.admin-nav{display:flex;gap:12px;flex-wrap:wrap}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:15px}th,td{text-align:left;padding:15px 12px;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--soft);white-space:nowrap}td button{min-height:42px;padding:8px 13px;font-size:14px}.code-box{overflow-wrap:anywhere;background:#e7f3e8;padding:25px;border-radius:14px;margin:22px 0}.code-box code{display:block;font-size:20px;margin:15px 0}.media{width:100%;max-height:65vh;margin-top:20px}.quiz{max-width:720px;margin:20px auto}.question-word{font-size:44px;font-weight:800;text-align:center;margin:25px 0}.choice-list{display:grid;gap:12px}.choice-list button{background:white;color:var(--ink);font-size:22px}.choice-list .selected{background:var(--ink);color:white}.score{font-size:45px;font-weight:800}.about{max-width:800px;margin:auto}.about img{max-width:100%;border-radius:14px}footer{max-width:1168px;margin:auto;padding:35px 32px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:20px 50px;font-size:14px;color:var(--muted)}footer p{margin:5px 0}footer strong{color:var(--ink)}.footer-links{margin-left:auto;display:flex;gap:22px;align-items:flex-start}.address{width:100%;font-size:13px}#toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;border-radius:10px;padding:0;z-index:100;max-width:90vw}#toast:not(:empty){padding:14px 22px}.loading{padding:70px;text-align:center}dialog{border:1px solid var(--line);border-radius:18px;max-width:520px;padding:30px}dialog::backdrop{background:#102e4280}
@media(max-width:760px){header{padding:16px;gap:12px}.brand{font-size:20px}.brand img{width:34px;height:34px}nav{gap:12px}nav a{font-size:14px}.nav-academy{padding:8px 10px}#logout{padding:5px 9px;font-size:12px}main{padding:28px 20px 55px}h1{font-size:30px}.hero{grid-template-columns:1fr;gap:20px;padding-top:22px}.hero h1{font-size:39px;letter-spacing:-1.5px}.hero p{font-size:17px}.hero-art{min-height:190px;max-height:230px;border-radius:20px}.hero-art img{max-height:220px}.hero .actions{margin-top:25px}.hero .button{flex:1;padding:14px 12px;font-size:17px}.grid{grid-template-columns:repeat(2,1fr);gap:14px}.card{padding:17px}.book-number{height:110px;padding:14px}.book-number strong{font-size:52px}.book-number span{font-size:13px}.book-card h2{font-size:18px}.book-card p{font-size:14px}.book-summary{grid-template-columns:100px 1fr;gap:18px}.book-summary .book-number{height:135px;padding:12px}.book-summary h1{font-size:25px}.book-summary .book-number strong{font-size:48px}.panel{padding:21px}.welcome-note{gap:20px}.welcome-note strong{font-size:15px}.welcome-note p{font-size:14px}.resource-row{align-items:flex-start;flex-direction:column}.resource-row .button{width:100%}.form-row{grid-template-columns:1fr;gap:0}.login .panel{padding:24px}.footer-links{margin-left:0}.tabs button{padding:9px 14px;font-size:15px}.actions>*{flex:1}footer{padding:25px 20px}.code-box code{font-size:16px}}
@media(max-width:380px){.grid{grid-template-columns:1fr}.brand small{display:none}nav{gap:8px}header{flex-wrap:wrap}.hero h1{font-size:34px}}
@media print{header,footer,nav,.actions,.tabs,button{display:none!important}main{padding:0}body{background:white}.panel{border:0}}

.page-reader{max-width:740px;margin:20px auto}.reader-controls{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}.reader-controls label{display:flex;align-items:center;gap:8px;font-size:15px}.reader-controls select{width:auto;min-width:95px}.reader-controls button:disabled{cursor:default}.reader-track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;overscroll-behavior-x:contain;scrollbar-width:thin;border:1px solid var(--line);background:#eef2f2;box-shadow:0 6px 18px #163c4714;outline-offset:4px}.reader-page{flex:0 0 100%;min-width:0;margin:0;scroll-snap-align:start;scroll-snap-stop:always}.reader-page img{display:block;width:100%;height:auto;user-select:none}.reader-footer{display:flex;justify-content:space-between;gap:12px;margin-top:12px;font-size:14px}.reader-track:focus-visible{outline:3px solid #d38b17}@media(max-width:760px){.reader-controls button{padding:10px 12px;font-size:15px}.reader-controls label{font-size:0}.reader-controls select{font-size:16px}.reader-footer{font-size:13px}}@media print{.reader-track{display:block;overflow:visible}.reader-page{break-after:page}.reader-controls,.reader-footer{display:none}}