:root{font-family:Inter,Pretendard,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans KR",sans-serif;color:#253449;background:#f5f7fa;font-size:14px;font-synthesis:none;--ink:#15283c;--muted:#7c8999;--green:#147d69;--line:#e5eaf0;--nav:#13283b}
*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:3px solid #65c4b4;outline-offset:3px}[hidden]{display:none!important}h1,h2,h3,p{margin:0}h1{letter-spacing:-1.2px}h2,h3{letter-spacing:-.5px}small{font-size:12px}button{border:0;background:none;color:inherit}input,select,textarea{color:var(--ink);background:#fff;border:1px solid #dce3eb;border-radius:8px;padding:10px 12px;max-width:100%;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px #147d6910}textarea{resize:vertical;line-height:1.7}label{font-weight:600;display:block;font-size:12px;color:#526176}label>input,label>select,label>textarea{display:block;width:100%;margin-top:7px;font-weight:400}label:has(input[type=checkbox]){display:flex;align-items:center;gap:10px}input[type=checkbox],input[type=radio]{accent-color:var(--green);width:17px;height:17px;flex:none;margin:0}
.app-shell{display:flex;min-height:100vh}.sidebar{width:234px;position:fixed;inset:0 auto 0 0;background:var(--nav);color:#b9c8d5;padding:31px 18px;display:flex;flex-direction:column;z-index:30}.logo{display:flex;align-items:center;gap:10px;color:#fff;padding:0 9px 38px;font-size:17px;font-weight:750;letter-spacing:1px}.logo small{display:block;margin-top:4px;letter-spacing:.5px;color:#96acbc;font-size:10px;font-weight:400}.nav-label{font-size:9px;font-weight:700;letter-spacing:1.8px;color:#6f8799;padding:0 15px;margin:14px 0}.sidebar nav{display:grid;gap:5px;margin-bottom:17px}.sidebar nav button{text-align:left;padding:13px 15px;border-radius:9px;font-weight:500;font-size:13px;display:flex;gap:12px;align-items:center}.sidebar nav button>span{font-size:18px;width:20px;text-align:center;color:#7896ac}.sidebar nav button:hover{background:#ffffff08;color:#fff}.sidebar nav button.active{background:#255444;color:#e5fff6}.sidebar nav button.active>span{color:#9ae2bc}.sidebar-bottom{margin-top:auto;padding:24px 13px 0}.sidebar-bottom a{font-size:12px;display:flex;justify-content:space-between;border-top:1px solid #ffffff13;padding-top:20px}.sidebar-bottom p{font-size:10px;color:#728b9e;line-height:1.9;margin-top:22px}.environment{font-size:10px;display:flex;gap:7px;align-items:center;margin-bottom:18px}.environment i{height:6px;width:6px;border-radius:100%;background:#77d2a8}.workspace{margin-left:234px;width:calc(100% - 234px)}.topbar{height:82px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 38px;gap:15px}.breadcrumb{font-size:11px;color:var(--muted)}.breadcrumb span{margin:0 13px;color:#ccd5df}.breadcrumb b{font-weight:500;color:#526176}.account{display:flex;align-items:center;gap:10px}.account b{display:block;font-size:11px}.account small{display:block;font-size:10px;color:var(--muted);margin-top:3px}.avatar{display:grid;place-items:center;width:33px;height:33px;border-radius:50%;background:#eaf3ee;color:var(--green);font-weight:700}.account .text-button{margin-left:15px;font-size:10px;color:var(--muted)}#menuToggle{display:none}main{max-width:1500px;margin:auto;padding:37px 38px 50px;min-height:calc(100vh - 137px)}.workspace-footer{padding:18px 38px;color:#9aa6b3;font-size:9px;border-top:1px solid var(--line);display:flex;justify-content:space-between;letter-spacing:1px}.workspace-footer span{letter-spacing:0}
.page-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:15px;margin-bottom:28px}.eyebrow{font-size:9px;letter-spacing:2px;color:var(--green);font-weight:750;display:block;margin-bottom:11px}.page-heading h1{font-size:27px;color:var(--ink);line-height:1.5}.page-heading p{font-size:12px;color:var(--muted);margin-top:7px;line-height:1.8}.date{font-size:11px;color:var(--muted);padding-top:20px}.button,.secondary,.danger,.google-button{display:inline-flex;justify-content:center;align-items:center;gap:8px;border-radius:8px;padding:11px 17px;background:var(--green);color:#fff;font-size:12px;font-weight:600;min-height:39px;border:1px solid transparent;white-space:nowrap}.button:hover{background:#106653}.secondary{background:#fff;color:#4a5d70;border-color:#dce3eb}.secondary:hover{background:#f3f6f8}.danger{color:#b94343;background:#fff5f4;border-color:#f2d3d0}.text-button{padding:5px 0;color:var(--green);font-size:12px}.icon-button{width:32px;height:32px;border-radius:6px;font-size:20px}.icon-button:hover{background:#f0f4f7}.actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.muted{color:var(--muted)}.small{font-size:11px}.badge{display:inline-flex;align-items:center;border-radius:5px;padding:4px 7px;background:#f0f3f6;color:#728194;font-size:10px;white-space:nowrap}.badge.green{color:#207e61;background:#e8f5ed}.badge.red{color:#b14c49;background:#fceeed}.badge.blue{color:#417baf;background:#edf4fb}.count{font-variant-numeric:tabular-nums}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:17px;margin-bottom:25px}.metric{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 24px;position:relative}.metric-label{font-size:11px;color:#708197}.metric-number{font-size:32px;font-weight:700;letter-spacing:-1px;line-height:1.4;margin:10px 0 4px;color:var(--ink)}.metric small{color:#9aa7b5;font-size:10px}.metric-symbol{position:absolute;right:20px;top:21px;background:#edf6f1;color:#449d7c;width:30px;height:30px;border-radius:8px;display:grid;place-items:center;font-size:17px}.welcome{border:1px solid #dce8df;background:#ecf4ed;border-radius:12px;display:flex;align-items:center;justify-content:space-between;padding:22px 25px;margin-bottom:25px;gap:20px}.welcome h2{font-size:16px;color:#285440}.welcome p{font-size:11px;color:#6e8879;margin-top:8px;line-height:1.7}.columns{display:grid;grid-template-columns:1.12fr 1fr;gap:24px}.panel{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}.panel-head{padding:22px 24px;border-bottom:1px solid #eef1f5;display:flex;justify-content:space-between;align-items:center;gap:10px}.panel-head h2{font-size:14px}.panel-body{padding:23px 24px}.section-note{font-size:11px;color:var(--muted);line-height:1.8}.activity{display:grid;gap:22px}.activity-row{display:flex;gap:13px}.activity-dot{width:8px;height:8px;border:2px solid #8ac6ae;border-radius:50%;margin-top:5px;flex:none}.activity-row b{font-size:11px;font-weight:600;display:block}.activity-row small{font-size:10px;display:block;color:var(--muted);margin-top:5px;word-break:break-all}.activity-time{margin-left:auto;white-space:nowrap;color:#a2afbd;font-size:9px}.grade-row{display:grid;grid-template-columns:50px 1fr 70px;gap:16px;align-items:center;margin-bottom:20px;font-size:11px}.grade-row:last-child{margin-bottom:0}progress{appearance:none;border:0;background:#f1f4f7;height:7px;width:100%;border-radius:8px;overflow:hidden}progress::-webkit-progress-bar{background:#f1f4f7}progress::-webkit-progress-value{background:#86bca7;border-radius:8px}progress::-moz-progress-bar{background:#86bca7}.grade-row span:last-child{text-align:right;color:var(--muted);font-size:10px}.quick-links{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px}.quick-link{border:1px solid var(--line);border-radius:10px;background:#fff;text-align:left;padding:20px;display:flex;align-items:center;gap:13px}.quick-link>span{font-size:22px;color:#7b9e90}.quick-link b{font-size:11px;display:block}.quick-link small{font-size:10px;color:var(--muted);display:block;margin-top:5px}
.toolbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:19px}.toolbar .search{margin-left:auto;min-width:260px;font-size:12px}.tabs{display:flex;gap:5px;background:#eaf0f4;padding:4px;border-radius:8px}.tabs button{border-radius:6px;padding:8px 15px;font-size:11px;color:#7a899a}.tabs button.active{color:#264e43;background:#fff;box-shadow:0 1px 4px #243d5b10;font-weight:650}.tabs.plain{background:transparent;padding:0;gap:8px}.tabs.plain button{border:1px solid #e0e6ee;background:#fff}.tabs.plain button.active{border-color:#95baa9;background:#edf5ee}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;text-align:left;white-space:nowrap;font-size:12px}thead{background:#fafbfd;color:#8190a2;font-size:10px}th{font-weight:500;padding:14px 20px;border-bottom:1px solid var(--line)}td{padding:17px 20px;border-bottom:1px solid #eff2f5}tbody tr:last-child td{border-bottom:0}tbody tr:hover{background:#fcfdfd}td strong{font-size:11px;font-weight:600}td small{display:block;font-size:10px;color:var(--muted);margin-top:5px}.table-person{display:flex;gap:10px;align-items:center}.table-person .avatar{width:30px;height:30px;font-size:11px;background:#edf1f6;color:#6e879d}.table-action{font-size:11px;color:var(--green);border:1px solid #dce8df;background:#fafffc;border-radius:5px;padding:6px 10px}.pager{display:flex;justify-content:space-between;align-items:center;padding:16px 21px;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}.pager .actions{gap:10px}.pager button{padding:5px 9px;border:1px solid var(--line);border-radius:5px;background:white}.empty{padding:55px 20px;text-align:center;color:var(--muted);font-size:12px;line-height:1.9}.empty b{display:block;font-size:15px;color:#586c81;margin-bottom:7px}.loading{padding:70px 20px;color:var(--muted);text-align:center}
.unit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.unit-card{text-align:left;background:#fff;border:1px solid var(--line);border-radius:12px;padding:21px;transition:border-color .15s,transform .15s}.unit-card:hover{border-color:#84ad9b;transform:translateY(-2px)}.unit-art{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:24px}.unit-art .hex{display:grid;place-items:center;width:48px;height:52px;clip-path:polygon(25% 0,75% 0,100% 50%,75% 100%,25% 100%,0 50%);background:#e9f1e7;color:#7b9e64;font-size:19px;font-weight:700}.unit-card:nth-child(3n+2) .hex{background:#e9f1f5;color:#6d99b3}.unit-card:nth-child(3n) .hex{background:#faf0de;color:#bba26b}.unit-card h2{font-size:16px;margin-bottom:8px}.unit-card p{font-size:10px;color:var(--muted)}.unit-card footer{border-top:1px solid #f0f3f6;padding-top:16px;margin-top:20px;display:flex;justify-content:space-between;font-size:10px;color:#8b9aa9}.unit-card footer b{color:#536b64;font-weight:500}.notice{border:1px solid #d9e8e0;background:#f0f7f3;border-radius:8px;padding:14px 17px;margin-bottom:20px;line-height:1.8;color:#5c7c6c;font-size:11px}.editor-toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px;position:sticky;top:0;background:#f5f7faf2;backdrop-filter:blur(10px);padding:14px 0;margin-bottom:10px;z-index:5}.question{background:#fff;border:1px solid var(--line);border-radius:11px;padding:22px;margin-bottom:16px}.question-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.question-top>b{font-size:11px;letter-spacing:1px;color:var(--green)}.question-top button{font-size:11px;padding:5px 8px;color:#8c9cac}.question-top button.remove{color:#ba726c}.question>label>textarea{min-height:76px}.choices{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:15px 0}.choice{display:flex;align-items:center;gap:10px;padding:9px 12px;border:1px solid #e5eaf0;border-radius:8px}.choice:has(input:checked){border-color:#96c4ad;background:#f3faf5}.choice input[type=text]{border:0;padding:5px;background:transparent;width:100%;font-size:12px;box-shadow:none}.question-meta{display:grid;grid-template-columns:2fr 1fr;gap:14px;margin-top:17px}.question-meta select,.question-meta input{font-size:11px}.question details{margin-top:16px;font-size:11px;color:var(--muted)}.question details textarea{width:100%;margin-top:10px;font-size:12px}.question .correct-hint{font-size:10px;color:#91a194}.preview-question{font-size:19px;line-height:1.8;white-space:pre-wrap;margin:15px 0 25px}.preview-options{display:grid;gap:10px}.preview-options button{padding:15px;text-align:left;border:1px solid var(--line);border-radius:8px;font-size:14px}.preview-options button.correct{border-color:#75af8b;background:#edf8ef}.preview-options button.wrong{border-color:#d98c80;background:#fff0ec}
.assets-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.asset-card{border:1px solid var(--line);background:#fff;border-radius:10px;overflow:hidden;min-width:0}.asset-preview{display:grid;place-items:center;height:148px;width:100%;background-color:#f7f9fb;background-image:linear-gradient(45deg,#edf0f4 25%,transparent 25%),linear-gradient(-45deg,#edf0f4 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#edf0f4 75%),linear-gradient(-45deg,transparent 75%,#edf0f4 75%);background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0;overflow:hidden}.asset-preview img{max-width:90%;max-height:125px;object-fit:contain}.asset-preview>span{font-size:35px;color:#a8b5c2}.asset-info{padding:15px}.asset-info b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:11px}.asset-info small{display:block;font-size:9px;color:var(--muted);margin-top:6px}.asset-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:13px}.asset-actions button{font-size:10px;color:var(--green);border:1px solid #e0e8e3;padding:5px 8px;border-radius:5px}.asset-hero{width:100%;max-height:60vh;object-fit:contain;background:#f4f6f9;border-radius:8px}.asset-path{font-size:11px;line-height:1.8;word-break:break-all;margin-top:15px;color:var(--muted)}
.settings-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:start}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:19px}.form-grid .full{grid-column:1/-1}.form-footer{display:flex;justify-content:flex-end;gap:10px;border-top:1px solid var(--line);padding-top:20px;margin-top:24px}.access-person{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:14px 0;gap:8px}.access-person:first-child{padding-top:0}.access-person b{font-size:11px;word-break:break-all}.access-person small{display:block;font-size:10px;color:var(--muted);margin-top:5px}.access-add{display:flex;gap:8px;margin-top:20px}.access-add input{min-width:0;flex:1;font-size:11px}.form-help{font-size:10px;color:var(--muted);line-height:1.8;margin-top:15px}
dialog{border:0;border-radius:14px;padding:0;width:min(600px,calc(100% - 32px));max-height:88vh;box-shadow:0 20px 90px #102a3c30;color:var(--ink)}dialog::backdrop{background:#13263870;backdrop-filter:blur(3px)}.modal-head{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid var(--line)}.modal-head h2{font-size:17px}#modalBody{padding:25px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:#18392e;color:white;padding:14px 24px;border-radius:9px;box-shadow:0 5px 24px #102a3c25;font-size:12px;z-index:100;max-width:calc(100% - 40px);line-height:1.7}#toast.error{background:#943e39}.login-shell{min-height:100vh;display:grid;grid-template-columns:1fr 1fr;background:white}.login-art{background:#142e3c;color:#fff;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:center;padding:12%;min-height:100vh}.login-art .eyebrow{color:#91ba9f;letter-spacing:3px;margin-bottom:30px}.login-art h1{font-size:clamp(34px,3.2vw,52px);line-height:1.5;z-index:1}.login-art p{margin-top:22px;line-height:2;color:#8fa9b4;font-size:13px;z-index:1}.login-art>small{position:absolute;bottom:45px;font-size:10px;letter-spacing:1px;color:#6f919d}.hex-decoration{position:absolute;right:-35px;bottom:70px;display:grid;grid-template-columns:repeat(3,110px);gap:7px;transform:rotate(-13deg);opacity:.28}.hex-decoration i{height:118px;display:grid;place-items:center;background:#5c987d;clip-path:polygon(25% 0,75% 0,100% 50%,75% 100%,25% 100%,0 50%);font-size:34px;color:#c9e9c6;font-style:normal}.hex-decoration i:nth-child(2n){background:#486f88}.login-panel{display:flex;flex-direction:column;justify-content:center;align-items:flex-start;max-width:460px;padding:65px 30px;margin:auto;width:100%}.login-panel>.eyebrow{margin:28px 0 15px}.login-panel h2{font-size:31px;line-height:1.5;color:var(--ink)}.login-panel>p{font-size:12px;color:var(--muted);line-height:1.9;margin-top:17px}.google-button{background:white;color:#3a4b5c;border:1px solid #d5dfe7;width:100%;margin-top:35px;min-height:48px;font-size:13px}.google-button:hover{background:#fafcfd}.login-panel .login-message{font-size:11px;min-height:40px;color:#8b7564}.subtle-link{font-size:10px;color:var(--muted);margin-top:28px}
@media(min-width:1600px){main{padding-top:46px}.unit-grid{grid-template-columns:repeat(4,1fr)}.assets-grid{grid-template-columns:repeat(5,1fr)}}
@media(max-width:1150px){.metrics{grid-template-columns:repeat(2,1fr)}.columns,.settings-grid{grid-template-columns:1fr}.unit-grid{grid-template-columns:repeat(2,1fr)}.assets-grid{grid-template-columns:repeat(3,1fr)}main{padding:30px 25px}.topbar{padding:0 25px}.sidebar{width:210px}.workspace{margin-left:210px;width:calc(100% - 210px)}}
@media(max-width:760px){.sidebar{transform:translateX(-100%);transition:transform .2s;width:230px;box-shadow:10px 0 40px #0002}.sidebar.open{transform:translateX(0)}.workspace{margin-left:0;width:100%}#menuToggle{display:block}.topbar{height:68px;padding:0 17px}.breadcrumb{margin-right:auto}.breadcrumb>b{font-size:11px}.breadcrumb{font-size:0}.breadcrumb span{margin:0;font-size:0}.account small,.account .text-button{display:none}.account b{font-size:10px}main{padding:25px 18px}.page-heading h1{font-size:23px}.page-heading{margin-bottom:22px}.page-heading p{font-size:11px}.page-heading .date{display:none}.metrics{gap:10px}.metric{padding:18px}.metric-number{font-size:28px}.metric-symbol{right:15px;top:17px;width:25px;height:25px}.metric-label{font-size:10px}.welcome{padding:20px;align-items:flex-start;flex-direction:column;gap:15px}.quick-links{grid-template-columns:1fr;gap:10px}.quick-link{padding:15px}.toolbar .search{min-width:0;width:100%;margin:0}.toolbar{gap:12px}.tabs button{padding:8px 11px}.unit-grid,.assets-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.unit-card{padding:17px}.unit-card h2{font-size:14px}.unit-art{margin-bottom:16px}.asset-preview{height:120px}.asset-preview img{max-height:104px}.question{padding:17px}.choices{grid-template-columns:1fr}.editor-toolbar{align-items:flex-start;flex-direction:column;gap:10px}.question-meta{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}.workspace-footer{padding:18px;font-size:8px}.workspace-footer span{display:none}.login-shell{grid-template-columns:1fr}.login-art{display:none}.login-panel{min-height:100vh;padding:45px 30px}.login-panel h2{font-size:29px}.settings-grid{gap:20px}}
@media(max-width:760px){.account .text-button{display:inline-block;margin-left:3px;font-size:9px}}