:root{
  --bg:#f6f7f9; --card:#ffffff; --ink:#1f2328; --sub:#6b7280; --line:#e3e6ea; --line2:#c9cfd6;
  --blue:#2f6fb0; --on-blue:#ffffff; --blue-ink:#1d5fa8; --blue-bg:#e3eefb;
  --green:#2e7d4f; --green-bg:#e6f4ec; --red:#b3261e; --red-bg:#fdecea;
  --amber:#8a5a00; --amber-bg:#fff4dc; --gray-bg:#eef0f3; --gray:#4b5563;
  --a:#1d5fa8; --b:#a1381e; --pop:#1f2328; --on-pop:#ffffff;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --bg:#15181c; --card:#1e2227; --ink:#e7e9ec; --sub:#9aa3ad; --line:#30363d; --line2:#46505b;
  --blue:#7fb2ea; --on-blue:#10202f; --blue-ink:#8cbcf2; --blue-bg:#1c2b3d;
  --green:#7cc79b; --green-bg:#18291f; --red:#f08a80; --red-bg:#3a1f1d;
  --amber:#e8c070; --amber-bg:#352b16; --gray-bg:#2a2f36; --gray:#c3cad2;
  --a:#8cbcf2; --b:#f0a48e; --pop:#e7e9ec; --on-pop:#15181c;
}}
:root[data-theme="dark"]{
  --bg:#15181c; --card:#1e2227; --ink:#e7e9ec; --sub:#9aa3ad; --line:#30363d; --line2:#46505b;
  --blue:#7fb2ea; --on-blue:#10202f; --blue-ink:#8cbcf2; --blue-bg:#1c2b3d;
  --green:#7cc79b; --green-bg:#18291f; --red:#f08a80; --red-bg:#3a1f1d;
  --amber:#e8c070; --amber-bg:#352b16; --gray-bg:#2a2f36; --gray:#c3cad2;
  --a:#8cbcf2; --b:#f0a48e; --pop:#e7e9ec; --on-pop:#15181c;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"맑은 고딕","Malgun Gothic","Apple SD Gothic Neo","Noto Sans KR",sans-serif;font-size:16px;line-height:1.6}
a{color:var(--blue-ink)}
button,input,textarea{font:inherit;color:inherit}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

header.top{background:var(--card);border-bottom:1px solid var(--line)}
.bar{max-width:1400px;margin:0 auto;padding:12px 24px;display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px}
.brand{font-weight:700;font-size:18px;color:var(--ink);text-decoration:none}
.crumb{display:flex;flex-wrap:wrap;gap:6px;font-size:14px;color:var(--sub);flex:1 1 300px;min-width:0}
.crumb a{color:var(--sub);text-decoration:none}
.crumb b{color:var(--ink);font-weight:500}
.spacer{flex:1}
.ghost{border:1px solid var(--line);background:none;color:var(--sub);border-radius:8px;padding:6px 12px;font-size:13px;min-height:36px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center}
.tabs{max-width:1400px;margin:0 auto;padding:0 24px;display:flex;gap:4px;overflow-x:auto}
.tabs a{padding:12px 16px;font-weight:700;color:var(--sub);border-bottom:3px solid transparent;text-decoration:none;white-space:nowrap}
.tabs a[aria-current]{color:var(--blue);border-bottom-color:var(--blue)}
.banner{background:var(--red-bg);color:var(--red);padding:10px 24px;text-align:center;font-weight:700}
.banner a{color:inherit}

.wrap{max-width:1040px;margin:0 auto;padding:28px 24px;display:flex;flex-direction:column;gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}
.btn{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:10px;padding:0 16px;min-height:44px;font-weight:700;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}
.btn.primary{background:var(--blue);border-color:var(--blue);color:var(--on-blue)}
.muted{color:var(--sub);font-size:14px}
h1{margin:0;font-size:26px}
.badge{font-size:13px;font-weight:700;border-radius:999px;padding:3px 12px;white-space:nowrap}
.st-queued{color:var(--gray);background:var(--gray-bg)}
.st-busy{color:var(--blue-ink);background:var(--blue-bg)}
.st-done{color:var(--green);background:var(--green-bg)}
.st-review,.st-failed,.st-auth{color:var(--red);background:var(--red-bg)}
.st-limited{color:var(--amber);background:var(--amber-bg)}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.subj{display:flex;flex-direction:column;gap:6px;min-height:140px;text-decoration:none;color:var(--ink)}
.subj .t{font-weight:700;font-size:18px}
.addsubj{border:2px dashed var(--line2);border-radius:12px;padding:20px;display:flex;flex-direction:column;gap:10px;justify-content:center}
.addsubj input{border:1px solid var(--line);border-radius:10px;padding:0 12px;height:44px;background:var(--card)}
.resume{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;text-decoration:none;color:var(--ink)}

.drop{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px 16px;border:2px dashed var(--line2);border-radius:12px;background:var(--card);padding:28px 20px;text-align:center;cursor:pointer}
.drop.over{border-color:var(--blue);background:var(--blue-bg)}
.list{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.row{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;padding:16px 20px;border-bottom:1px solid var(--line);color:var(--ink);text-decoration:none}
.row:last-child{border-bottom:0}
.row .main{flex:1 1 320px;min-width:0}
.row .t{font-weight:700}
.row .d{font-size:13px;color:var(--sub);white-space:pre-line}
.stages{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:4px;margin-top:8px;max-width:360px}
.stages i{height:6px;border-radius:3px;background:var(--line)}
.stages i.on{background:var(--blue)}
.row form{margin:0}

.lec{max-width:1400px;margin:0 auto;padding:24px;display:flex;flex-wrap:wrap;gap:24px;align-items:flex-start}
.toc{flex:1 1 200px;max-width:240px;font-size:14px;display:flex;flex-direction:column;gap:2px;position:sticky;top:12px}
.toc .h{font-size:12px;font-weight:700;color:var(--sub);padding:0 10px 6px}
.toc a{padding:6px 10px;border-radius:6px;color:var(--sub);text-decoration:none}
.toc a.l2{padding-left:20px}
.toc a:hover{background:var(--blue-bg);color:var(--blue-ink)}
.content{flex:999 1 560px;min-width:0}
.note{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:28px 36px;position:relative}
.note h2{font-size:24px;margin:28px 0 6px}.note h2:first-child{margin-top:0}
.note h3{font-size:19px;margin:22px 0 6px}
.note h4{font-size:16px;margin:16px 0 4px}
.note h5{font-size:15px;margin:12px 0 4px}
.note .pages{font-size:13px;color:var(--sub);margin:0 0 10px}
.note ul{padding-left:22px;margin:6px 0}
.box{border-radius:10px;padding:10px 16px;margin:10px 0;border-left:4px solid}
.box p{margin:2px 0}
.box.blue{background:var(--blue-bg);border-color:var(--blue)}
.box.green{background:var(--green-bg);border-color:var(--green)}
.box.red{background:var(--amber-bg);border-color:var(--amber)}
.tbl{overflow-x:auto;margin:10px 0}
.note table{border-collapse:collapse;width:100%;font-size:15px;font-variant-numeric:tabular-nums}
.note th,.note td{border:1px solid var(--line);padding:6px 10px;text-align:left;vertical-align:top}
.note th{background:var(--bg)}
.note figure{margin:12px 0}.note img{max-width:100%;border:1px solid var(--line);border-radius:8px}
.note figcaption{font-size:13px;color:var(--sub)}
.chk{color:var(--red);font-weight:700}.star{color:var(--amber)}
.empty{padding:40px;text-align:center;color:var(--sub)}
.pop{position:absolute;display:flex;gap:4px;background:var(--pop);border-radius:8px;padding:4px;box-shadow:0 4px 16px rgba(0,0,0,.18);z-index:10}
.pop button{border:0;background:none;color:var(--on-pop);font-size:13px;font-weight:700;padding:6px 10px;border-radius:6px;min-height:32px;cursor:pointer}
.practice{width:100%;height:calc(100vh - 150px);min-height:620px;border:1px solid var(--line);border-radius:12px;background:var(--card)}
.wrongbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;background:var(--red-bg);color:var(--red);border-radius:10px;padding:10px 14px;margin-bottom:10px}

.panel{flex:1 1 360px;max-width:440px;min-width:300px;background:var(--card);border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;height:calc(100vh - 150px);min-height:560px;position:sticky;top:12px}
.panel .hd{display:flex;align-items:center;gap:8px;padding:14px 16px;border-bottom:1px solid var(--line)}
.panel .hd .t{flex:1}
.msgs{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:14px}
.msg.user{align-self:flex-end;max-width:88%;background:var(--blue-bg);border-radius:12px;padding:10px 12px;white-space:pre-line}
.msg.ai{max-width:94%}
.msg.ai p{margin:0 0 8px}
.outside{display:inline-block;font-size:12px;font-weight:700;color:var(--amber);background:var(--amber-bg);border-radius:6px;padding:2px 8px;margin-bottom:6px}
.general{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin:0 0 8px}
.general .h{font-size:12px;font-weight:700;color:var(--sub);margin-bottom:4px}
.cites{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:12px;color:var(--sub)}
.cite{border:1px solid var(--line);background:var(--bg);color:var(--blue-ink);border-radius:999px;padding:2px 10px;font-size:12px;font-weight:700;min-height:28px;cursor:pointer}
.slideprev{border-top:1px solid var(--line);padding:10px 16px}
.slideprev img{max-width:100%;border:1px solid var(--line);border-radius:6px}
.composer{border-top:1px solid var(--line);padding:12px;display:flex;flex-direction:column;gap:8px}
.quote{font-size:12px;color:var(--blue-ink);border-left:2px solid var(--blue-ink);padding-left:8px;display:flex;gap:8px}
.quote span{flex:1;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.quote button{border:0;background:none;color:var(--sub);cursor:pointer}
.composer .in{display:flex;gap:8px;align-items:flex-end}
.composer textarea{flex:1;resize:none;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:15px;background:var(--card)}
.typing{color:var(--sub);font-size:14px}
.fab{display:none}

@media (max-width:1100px){
  .toc{display:none}
  .panel{position:fixed;left:0;right:0;bottom:0;top:auto;max-width:none;height:62vh;min-height:0;border-radius:20px 20px 0 0;z-index:20;box-shadow:0 -4px 24px rgba(0,0,0,.18);display:none}
  .panel.open{display:flex}
  .fab{display:inline-flex;position:fixed;right:20px;bottom:20px;z-index:15;border-radius:999px;box-shadow:0 4px 16px rgba(0,0,0,.18)}
  .note{padding:22px 20px}
  body{font-size:17px}
}
@media (min-width:1101px){ .panel.closed{display:none} .fab.show{display:inline-flex;position:fixed;right:24px;bottom:24px;border-radius:999px} }

.login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.login form{width:100%;max-width:380px;display:flex;flex-direction:column;gap:16px;padding:32px 28px;border-radius:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:14px;font-weight:700}
.field input{border:1px solid var(--line);border-radius:10px;padding:0 14px;height:48px;background:var(--card)}
.err{color:var(--red);font-size:14px;margin:0}
dl.kv{margin:0;display:grid;grid-template-columns:max-content minmax(0,1fr);gap:6px 20px;font-size:15px}
dl.kv dt{color:var(--sub)}dl.kv dd{margin:0}
/* 노트 고치기 · 포스트잇 */
.notebar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:0 0 10px}
.notebar .btn{min-height:36px;padding:0 12px;font-size:14px}
.notebar .btn[aria-pressed="true"]{background:var(--blue-bg);border-color:var(--blue)}
.memolist{display:flex;flex-direction:column;gap:4px;margin:0 0 10px;padding:12px}
.memolist .row{display:flex;flex-wrap:wrap;gap:8px;text-align:left;border:0;background:none;color:var(--ink);padding:6px 4px;cursor:pointer;border-bottom:1px solid var(--line)}
.memo{float:right;clear:right;width:240px;margin:2px -16px 10px 16px;background:#fff6b0;color:#3b3200;border-radius:4px 4px 10px 4px;padding:10px 12px;box-shadow:0 3px 10px rgba(0,0,0,.15);transform:rotate(.6deg);font-size:14px;list-style:none}
.memo .q{font-size:12px;opacity:.75;border-left:3px solid #d8c24a;padding-left:6px;margin-bottom:6px;max-height:3.6em;overflow:hidden}
.memo .t{white-space:pre-wrap;word-break:break-word}
.memo textarea{width:100%;box-sizing:border-box;border:1px solid #d8c24a;border-radius:6px;background:#fffbe0;color:#3b3200;font:inherit;padding:6px}
.memo .acts{display:flex;gap:2px;margin-top:6px}
.memo .acts button{border:0;background:none;color:#6b5a00;font-size:12px;font-weight:700;padding:4px 6px;min-height:28px;cursor:pointer;border-radius:4px}
.memo .acts button:hover{background:rgba(0,0,0,.06)}
.memo.folded{width:auto;padding:4px 10px}.memo.folded .q,.memo.folded .t{display:none}
.memo.folded .acts{margin:0}.memo.folded .acts button:not([data-a="fold"]){display:none}
.memo.folded .acts button[data-a="fold"]::before{content:"메모 "}
.note.editing [data-b]{cursor:pointer;border-radius:6px;outline:1px dashed transparent;outline-offset:3px}
.note.editing [data-b]:hover{outline-color:var(--blue);background:var(--blue-bg)}
.note .beingEdited{opacity:.4}
.blockedit{margin:8px 0 14px;display:flex;flex-direction:column;gap:8px}
.blockedit textarea{width:100%;box-sizing:border-box;font:15px/1.6 ui-monospace,Menlo,monospace;border:1px solid var(--blue);border-radius:8px;padding:10px;background:var(--card);color:var(--ink)}
.blockedit .acts{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.blockedit .btn{min-height:36px}
@media (max-width:700px){ .memo{float:none;width:auto;margin:8px 0;transform:none} }
.notes{position:relative}
.note.editing [data-b],.notes.editing [data-b]{cursor:pointer;border-radius:6px;outline:1px dashed transparent;outline-offset:3px}
.note.editing [data-b]:hover,.notes.editing [data-b]:hover{outline-color:var(--blue);background:var(--blue-bg)}
.addend{margin-top:12px;min-height:36px;font-size:14px;border-style:dashed}
.subjtools{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:8px}
form.inline{display:inline-flex;gap:6px;align-items:center;margin:0}
.subjtools select,.foldertools input{min-height:36px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink);padding:0 8px;font:inherit}
.ghost.danger{color:var(--red)}
details.folder{border:1px solid var(--line);border-radius:12px;padding:12px 16px;background:var(--card);margin-bottom:12px}
details.folder summary{cursor:pointer;display:flex;gap:10px;align-items:baseline;font-weight:700;list-style:none}
details.folder summary::-webkit-details-marker{display:none}
details.folder .grid{margin-top:12px}
.foldertools{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;justify-content:flex-end}