:root{--bg:#F4F5F7;--card:#FFFFFF;--text:#161A23;--sub:#4F5662;--line:#E1E4E9;--line2:#C9CED6;--dash:#8A919C;--blue:#1E4FCF;--blue-weak:#E7EDFB;--blue-dark:#153A9C;--orange:#A9520C;--orange-weak:#FCEEDF;--fig:#FAFBFC}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.55 "Noto Sans KR","Malgun Gothic","Apple SD Gothic Neo",system-ui,sans-serif}
a{color:var(--blue)}a:hover{color:var(--blue-dark)}
button{font:inherit;color:inherit;cursor:pointer}
button:disabled{cursor:default}
.btn:disabled{opacity:.5;cursor:not-allowed}
h1{margin:0;font-size:28px;font-weight:700}
h2{margin:0;font-size:17px}
.btn{white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:10px;border:0;background:var(--blue);color:#fff;font-weight:700;text-decoration:none}
.btn:hover{background:var(--blue-dark);color:#fff}
.btn.ghost{background:var(--card);color:var(--text);border:1px solid var(--line2);font-weight:500}
.btn.ghost:hover{border-color:var(--blue);background:var(--card);color:var(--text)}
.btn.sm{min-height:40px;padding:0 14px;font-size:14px}
.btn.big{min-height:52px;padding:0 28px;font-size:17px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px}
.sub{color:var(--sub)}
.small{font-size:13px}
.chip{display:inline-block;padding:3px 8px;border-radius:6px;font-size:13px;background:var(--card);border:1px dashed var(--dash);color:var(--sub)}
.chip.pass{background:var(--blue-weak);color:var(--blue);border:1px solid var(--blue-weak)}
.chip.fail{background:var(--orange-weak);color:var(--orange);border:1px solid var(--orange-weak);font-weight:500}
.chip.fast{border-style:solid;border-color:#E3B341;box-shadow:inset 3px 0 0 #E3B341}
.fastnote{border:1px solid #E3B341;background:#FFF8E6;border-radius:10px;padding:12px 16px;display:flex;flex-direction:column;gap:6px}
.lesson.tl{font-size:17px;line-height:1.75;margin-top:0;flex-wrap:nowrap;align-items:stretch;flex-direction:column}
.tl h2{font-size:22px}
.tl .lcore{margin:0;font-size:19px}
.tl .lbox{border-radius:10px;padding:14px 18px}
.tl .lside{align-self:center}
.lcmp{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.lcmp>div{border-radius:10px;padding:12px 16px;background:var(--bg2)}
.lcmp>div.f{background:#FFF8E6;border:1px solid #E3B341}
@media(max-width:640px){.lcmp{grid-template-columns:1fr}}
.badge{align-self:flex-start;padding:4px 10px;border-radius:6px;font-size:13px;font-weight:700;background:var(--bg);color:var(--sub);border:1px dashed var(--dash)}
.badge.pass{background:var(--blue-weak);color:var(--blue);border:0}
.badge.fail{background:var(--orange-weak);color:var(--orange);border:0}
/* dashboards */
.dash{display:flex;flex-wrap:wrap;min-height:100vh}
.side{flex:1 1 240px;max-width:100%;background:var(--card);border-right:1px solid var(--line);padding:28px 20px;display:flex;flex-direction:column;gap:24px}
.side .nav{display:flex;flex-direction:column;gap:4px}
.side .nav a{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;border-radius:10px;color:var(--text);text-decoration:none;font-size:15px}
.side .nav a.on{background:var(--blue-weak);color:var(--blue);font-weight:700}
.side .nav a .st{font-size:12px;color:var(--sub)}
.side .nav a.on .st{color:var(--blue)}
.side .save{margin-top:auto;display:flex;flex-direction:column;gap:10px;padding:14px;border-radius:10px;background:var(--bg);font-size:13px;color:var(--sub);line-height:1.5}
.side .save button{min-height:36px;padding:0 12px;border:1px solid var(--line2);border-radius:8px;background:var(--card)}
.dmain{flex:999 1 560px;min-width:0;padding:36px 48px 90px;display:flex;flex-direction:column;gap:22px}
.todaybox{border:2px solid var(--blue);padding:28px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px}
.counts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.counts a{padding:18px 20px;display:flex;flex-direction:column;gap:4px;text-decoration:none;color:var(--text)}
.counts b{font-size:28px}
.cal{min-width:720px;display:grid;grid-template-columns:80px repeat(5,minmax(0,1fr));gap:8px;font-size:14px}
.cal .c{min-height:56px;padding:8px 10px;border-radius:8px;display:flex;flex-direction:column;justify-content:center;gap:2px;background:var(--card);border:1px solid var(--line)}
.cal .c.done{background:var(--bg)}
.cal .c.today{background:var(--blue-weak);border:2px solid var(--blue)}
.cal .c.pre{background:transparent;border-style:dashed}
.cal .c.off{background:transparent;border-color:transparent}
.btn.ghost.on{border:2px solid var(--blue);color:var(--blue)}
.cal .c.exam{background:#FFF8E6;border:2px solid #E3B341;font-weight:700}
.cal .c span:last-child{font-size:12px;color:var(--sub)}
.cal .wk{display:flex;align-items:center;font-weight:700}
.cal.sess{min-width:600px;grid-template-columns:80px repeat(4,minmax(0,1fr))}
.sessctl{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;padding:10px 14px;border-radius:12px;background:var(--blue-weak)}
.sessctl>span{flex:1 1 240px}
.schedpick{display:flex;flex-wrap:wrap;gap:8px 10px;align-items:center}
.schedpick>b{margin-right:4px}
.schedpick .pick{flex:0 1 auto;min-width:150px}
.cell{width:26px;height:26px;padding:0;border-radius:5px;cursor:pointer;background:var(--card);border:1px dashed var(--dash)}
.cell.pass{background:var(--blue);border:1px solid var(--blue)}
.cell.fail{background:var(--orange-weak);border:2px solid var(--orange)}
.cell.picked{outline:3px solid var(--text);outline-offset:2px}
.legend{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:8px;background:var(--card);border:1px solid var(--line);font-size:14px}
.legend .cell{width:14px;height:14px;border-radius:3px;cursor:default}
table{width:100%;border-collapse:collapse;font-size:15px}
td,th{padding:13px 10px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-size:13px;font-weight:500;color:var(--sub)}
tr:last-child td{border-bottom:0}
.tog{min-height:40px;padding:0 14px;border:1px solid var(--line2);border-radius:20px;background:var(--card);font-size:14px}
.tog[aria-pressed=true]{border:2px solid var(--blue);background:var(--blue-weak);color:var(--blue);font-weight:500}
/* pages */
.page{min-height:100vh;display:flex;flex-direction:column}
header.top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:16px 40px;background:var(--card);border-bottom:1px solid var(--line)}
header.top .brand{font-size:17px;font-weight:700;color:var(--text);text-decoration:none}
header.top .left{display:flex;align-items:center;gap:14px}
a.logo{display:inline-flex;align-items:center;gap:8px;font-size:19px;font-weight:800;color:var(--text);text-decoration:none;min-height:36px}
a.logo:hover{color:var(--blue-dark)}
a.logo svg{width:28px;height:28px;flex:none}
header.top .left .bar{width:1px;height:20px;background:var(--line2)}
header.top .meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:14px}
header.top .meta .cur{font-weight:700;color:var(--blue)}
.wrap{flex:1 1 auto;width:100%;max-width:1280px;margin:0 auto;padding:28px 40px 90px;display:flex;flex-wrap:wrap;gap:24px;align-items:flex-start}
.qcard{flex:999 1 640px;min-width:0;padding:28px;display:flex;flex-direction:column;gap:18px}
.qtext{margin:0;font-size:19px;line-height:1.75;white-space:pre-line}
.fig{display:flex;justify-content:center;padding:12px;background:var(--fig);border-radius:10px}
.fig svg{display:block;width:100%;height:auto;max-height:460px}
.rgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.rcard{display:flex;flex-direction:column;gap:8px;padding:22px;text-align:left;font:inherit;color:inherit;cursor:pointer}
.rcard:hover{border-color:var(--blue)}
.rcard.on{border:2px solid var(--blue);padding:21px}
@media (max-width:760px){.rgrid{grid-template-columns:minmax(0,1fr)}}
.prior-tag{display:inline-block;padding:2px 8px;border-radius:6px;background:var(--bg);border:1px solid var(--line2);font-size:12px;color:var(--sub)}
.qgrid{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:24px;align-items:start}
.qgrid .fig{padding:8px}
.ftable-wrap{display:block;padding:0;background:none}
.ftable{width:100%;border-collapse:collapse;font-size:18px;background:#fff}
.ftable th,.ftable td{border:1px solid #222;padding:8px 10px;text-align:center;white-space:nowrap}
.ftable th{background:#eef1f6;font-weight:500;white-space:normal;word-break:keep-all;font-size:17px;color:var(--text)}
.ftable tr.sum td{font-weight:700}
.tnote{margin-top:6px;text-align:right;font-size:16px;color:var(--text)}
.ftable tr:last-child td{border-bottom:1px solid #222}
.ftable.tight th,.ftable.tight td{padding:8px 5px}
@media (max-width:900px){.qgrid{grid-template-columns:minmax(0,1fr)}.qgrid .fig svg{max-width:520px;margin:0 auto}}
.fig img{max-width:100%;height:auto;border-radius:6px;background:#fff}
.opts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.opts.five{grid-template-columns:repeat(5,minmax(0,1fr))}
.opt{min-height:52px;text-align:left;padding:10px 16px;border:1px solid var(--line2);border-radius:10px;background:var(--card);font-size:16px;line-height:1.45}
.opts.five .opt{text-align:center;font-size:17px}
.opt.sel,.opt.right{border:2px solid var(--blue);background:var(--blue-weak);padding:9px 15px}
.opt.wrong{border:2px solid var(--orange);background:var(--orange-weak);padding:9px 15px}
.fb{border-radius:10px;padding:14px 16px;font-size:15px;line-height:1.6}
/* 답 직접 쓰기: the choices stay hidden until grading */
.typed{display:flex;flex-direction:column;gap:12px;border:1px solid var(--line2);border-radius:12px;padding:16px;background:var(--card)}
.tline{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:22px;font-weight:700}
.tval{min-width:180px;min-height:52px;padding:6px 14px;border:2px solid var(--blue);border-radius:10px;background:var(--blue-weak);display:flex;align-items:center;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.tval:empty::before{content:"답";color:var(--sub);font-weight:400}
.keypad{display:grid;grid-template-columns:repeat(5,minmax(0,68px));gap:8px}
.keypad button{min-height:52px;border:1px solid var(--line2);border-radius:10px;background:var(--fig);font-size:20px}
.keypad button.fn{font-size:15px}
.typed.done{flex-direction:row;flex-wrap:wrap;align-items:baseline;gap:10px;padding:12px 16px}
.typed.done b{font-size:20px}
.fb.ok{background:var(--blue-weak)}
.fb.ok strong{color:var(--blue)}
.fb.no{background:var(--orange-weak)}
.fb.no strong{color:var(--orange)}
.changes{padding:14px 16px;border:1px solid var(--line);border-radius:10px;display:flex;flex-direction:column;gap:8px;font-size:14px}
.steps{margin:0;padding-left:1.3em;line-height:1.9}
.stepbox{padding:12px;border:1px solid var(--line);border-radius:10px;display:flex;flex-direction:column;gap:6px}
.stepbox.stuck{border:2px solid var(--orange);padding:11px}
.stepbox .t{font-size:14px;font-weight:500}
.stepbox .h{font-size:13px;color:var(--sub);line-height:1.6}
.stepbox button{align-self:flex-start;min-height:36px;padding:0 12px;border:1px solid var(--line2);border-radius:8px;background:var(--card);font-size:13px}
.grid25{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}
.grid25 button{min-height:44px;border-radius:8px;border:1px solid var(--line2);background:var(--card);font-size:14px}
.grid25 button.ans{border-color:var(--blue);background:var(--blue);color:#fff}
.grid25 button.cur{border:2px solid var(--blue);background:var(--blue-weak);color:var(--text);font-weight:700}
.grid25 button.ans.cur{background:var(--blue);color:#fff}
.timer{font-size:36px;font-weight:700;font-variant-numeric:tabular-nums}
.li{display:flex;justify-content:space-between;gap:8px;padding:9px 10px;border-radius:8px;font-size:14px;border:0;background:none;text-align:left;width:100%}
.li span:last-child{white-space:nowrap}
.li.on{background:var(--blue-weak);font-weight:700}
details.concept{padding:18px 22px}
details.concept summary{font-size:15px;font-weight:700;cursor:pointer}
.lesson{display:flex;flex-wrap:wrap;gap:20px;margin-top:14px;align-items:flex-start}
.lesson .ltext{flex:1 1 340px;min-width:0;display:flex;flex-direction:column;gap:12px;font-size:16px;line-height:1.75}
.lesson .lcore{margin:0}
.lesson .lbox{border-radius:10px;padding:12px 16px}
.lesson .lbox>strong{display:block;font-size:14px;margin-bottom:4px}
.lesson .lrule{background:var(--blue-weak)}.lesson .lrule>strong{color:var(--blue)}
.lesson .lrule ul{margin:0;padding-left:1.2em}
.lesson .lex{border:1px solid var(--line)}
.lesson .lex ol{margin:6px 0 0;padding-left:1.3em}
.lesson .lex .lans{margin-top:6px;font-weight:700;color:var(--blue)}
.lesson .lex details summary{cursor:pointer;color:var(--blue);font-size:15px;margin-top:6px}
.lesson .ltrap{background:var(--orange-weak)}.lesson .ltrap>strong{color:var(--orange)}
.lesson .lside{flex:0 1 auto;max-width:100%;display:flex;flex-direction:column;gap:8px;align-items:center}
.lesson .lfig{padding:12px;background:var(--fig);border-radius:10px;max-width:100%}
.lesson .lfig svg{display:block;max-width:100%;height:auto}
.lesson .lcap{font-size:14px;color:var(--sub);text-align:center;max-width:380px;line-height:1.5}
.lesson .ftable{width:auto}
.startcard{padding:28px;display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.review-badge{display:inline-block;padding:2px 8px;border-radius:6px;background:var(--orange-weak);color:var(--orange);font-size:12px;font-weight:700}
.clock{display:inline-flex;align-items:baseline;gap:8px;flex-wrap:wrap;padding:6px 12px;border-radius:8px;background:var(--blue-weak)}
.clock #clock{font-size:22px;font-weight:700;color:var(--blue);font-variant-numeric:tabular-nums}
.clock .goal{font-size:14px;color:var(--sub)}
.clock.over{background:var(--orange-weak)}
.clock.over #clock{color:var(--orange)}
.flow{display:flex;flex-wrap:wrap;gap:6px;font-size:13px;font-weight:700;color:var(--sub)}
.flow span{padding:4px 10px;border-radius:14px;border:1px solid var(--line2);background:var(--card)}
.flow span.now{border-color:var(--blue);background:var(--blue);color:#fff}.flow span.done{border-color:var(--blue);color:var(--blue)}
.stage{border:1px solid var(--line2);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:12px}
.stage.now{border:2px solid var(--blue);padding:15px}
.stage>h3{margin:0;font-size:16px}
.cmp{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}
.cmp>div{min-width:0;display:flex;flex-direction:column;gap:8px}
.cmp img{width:100%;height:auto;border:1px solid var(--line);border-radius:8px;background:#fff}
.nextbtn{align-self:flex-start;min-height:48px}
.banner{display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding:16px 18px;border-radius:10px}
.banner.ok{background:var(--blue-weak)}.banner.no{background:var(--orange-weak)}
.banner .big{font-size:30px;font-weight:700;font-variant-numeric:tabular-nums}
.banner.ok .big{color:var(--blue)}.banner.no .big{color:var(--orange)}
.banner>div{flex:1 1 300px;display:flex;flex-direction:column;gap:2px}
fieldset.iv{border:0;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
fieldset.iv legend{font-size:16px;font-weight:700;margin-bottom:10px;padding:0}
.reason{min-height:48px;text-align:left;padding:0 16px;border:1px solid var(--line2);border-radius:10px;background:var(--card);font-size:15px}
.reason.on{border:2px solid var(--blue);background:var(--blue-weak);padding:0 15px;font-weight:500}
.reason .ai{margin-left:10px;padding:2px 8px;border-radius:6px;background:var(--blue);color:#fff;font-size:12px;font-weight:700;vertical-align:1px}
.sheet{border:1px solid var(--line2);border-radius:10px;background:var(--card);overflow:hidden}
.sheet .shead{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:4px 12px;padding:10px 14px;border-bottom:1px solid var(--line);font-size:14px}
.srows{border-left:1px solid var(--line2);margin-left:40px}
.srow{position:relative;height:64px;border-bottom:1px dashed var(--line2)}
.srow:last-child{border-bottom:0}
.srow>.n{position:absolute;left:-40px;width:40px;top:20px;text-align:center;font-size:14px;font-weight:700;color:var(--sub)}
.srow.ln{background:rgba(30,79,207,.06)}.srow.hot{background:var(--orange-weak)}
.srow[data-t]::after{content:attr(data-t);position:absolute;right:10px;top:4px;font-size:12px;font-weight:700;color:var(--blue)}
.srow.hot::after{color:var(--orange)}
.anslbl{font-size:14px;font-weight:700;margin-bottom:-8px}
.follow{padding:24px;display:flex;flex-direction:column;gap:14px}
.follow .fq{font-size:15px;line-height:1.7;color:var(--sub);margin:0}
.fline{display:flex;flex-direction:column;gap:4px}
.fwant{display:flex;gap:10px;align-items:baseline;font-size:20px;letter-spacing:.03em}
.fwant .n{font-size:14px;font-weight:700;color:var(--sub);min-width:18px}
.fwant .blank{color:var(--blue);letter-spacing:0}
.frow{height:64px;border:1px solid var(--line2);border-radius:10px;background:var(--card);touch-action:none}
.fres.ok{color:var(--blue)}.fres.no{color:var(--orange)}
.inkread{margin:0;padding-left:0;list-style:none;display:flex;flex-direction:column;gap:4px;font-size:15px;line-height:1.6}
.inkread li.ok b{color:var(--blue)}.inkread li.hot{color:var(--orange)}.inkread .sub{font-size:13px}
.inkread li{display:flex;flex-wrap:wrap;gap:4px 10px;align-items:baseline}
.inkread .rd{font-size:17px;font-variant-numeric:tabular-nums}.inkread .lt{font-size:14px;color:var(--sub)}
.inkread li.ok .lt{color:var(--blue)}.inkread li.hot{background:var(--orange-weak);border-radius:8px;padding:2px 8px;margin:0 -8px}.inkread li.hot .lt{color:var(--orange);font-weight:700}
.inkread .uns{text-decoration:underline dashed var(--dash);text-underline-offset:4px}.inkread li.uns .lt{color:var(--orange)}
.crows{display:flex;flex-direction:column;gap:10px}.crow{display:flex;flex-direction:column;gap:2px;padding:10px 14px;border-radius:10px;border:1px solid var(--line)}
.crow b{font-size:22px;font-variant-numeric:tabular-nums}.crow.bad{background:var(--orange-weak);border-color:var(--orange-weak)}.crow.bad b{color:var(--orange)}.crow.want{border-color:var(--blue);background:var(--blue-weak)}.crow.want b{color:var(--blue-dark)}
.coachg span:not(.aitag){font-size:16px;line-height:1.6}.tipbox{display:flex;flex-direction:column;gap:4px;padding:12px 14px;border-radius:10px;background:var(--bg)}
.coachev summary{cursor:pointer;color:var(--sub);font-size:14px;min-height:36px;display:flex;align-items:center}
.clines{display:flex;flex-direction:column;gap:8px}.clines .ctext{flex:0 1 46%;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-variant-numeric:tabular-nums}.clines .tbar.hot{color:var(--orange);font-weight:700}
.aitag.sm{display:inline-block;padding:1px 6px;border-radius:5px;background:var(--blue);color:#fff;font-size:11px;font-weight:700;vertical-align:1px}
.iask{display:flex;flex-direction:column;gap:8px;padding:12px 14px;border:1px solid var(--blue);border-radius:12px;background:var(--blue-weak)}
.iopts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.iopts .opt{background:var(--card);font-variant-numeric:tabular-nums}
.tipbox .aitag{align-self:flex-start;padding:2px 8px;border-radius:6px;background:var(--blue);color:#fff;font-size:12px;font-weight:700}
.tipline{overflow-x:auto;color:var(--text);padding:6px 0}.tipline svg{max-width:100%;height:auto}
.solmap .mine{color:var(--blue);font-size:13px;font-weight:700;white-space:nowrap}
.tcmp .ans2{display:grid;grid-template-columns:1fr 1fr auto;gap:10px;align-items:end}.tcmp .ans2>div{display:flex;flex-direction:column}.tcmp .ans2 b{font-size:20px}
.aibox{border:1px solid var(--line2);border-radius:10px;padding:14px 16px;display:flex;flex-direction:column;gap:6px;background:var(--card)}
.aibox .aitag{align-self:flex-start;padding:2px 8px;border-radius:6px;background:var(--blue);color:#fff;font-size:12px;font-weight:700}
.aibox b{font-size:17px}
.itl{position:relative;display:flex;height:24px;margin:6px 0 16px;border:1px solid var(--line);border-radius:5px}
.itl i{display:block;height:100%;font-style:normal;font-size:11px;line-height:22px;text-align:center;overflow:hidden;white-space:nowrap;color:var(--sub)}
.itl .s{background:repeating-linear-gradient(45deg,var(--line) 0 4px,transparent 4px 8px)}
.itl .l{background:rgba(30,79,207,.10);border-right:1px solid var(--card)}
.itl .h{background:var(--orange-weak);color:var(--orange);font-weight:700}
.itl .e{background:var(--line)}
.itl .goal{position:absolute;top:-4px;bottom:-16px;border-left:2px dashed var(--orange)}
.itl .goal span{position:absolute;left:4px;bottom:0;font-size:11px;color:var(--orange);white-space:nowrap}
.elpick{min-height:44px;padding:0 14px;border:1px solid var(--line2);border-radius:22px;background:var(--card);font-size:14px}
.elpick.on{border:2px solid var(--blue);background:var(--blue-weak);padding:0 13px;font-weight:500}
.tbar{display:flex;align-items:center;gap:10px;font-size:14px}
.tbar .track{flex:1 1 auto;height:10px;border-radius:5px;background:var(--line)}
.tbar .track i{display:block;height:10px;border-radius:5px;background:var(--blue)}
.tbar .track i.o{background:var(--orange)}
.tbar .tv{width:44px;text-align:right;font-variant-numeric:tabular-nums}
.self{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.self>div{display:flex;flex-direction:column;gap:8px}
@media (max-width:900px){.self{grid-template-columns:1fr}}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--text);color:#fff;padding:10px 16px;border-radius:10px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:9}
.toast.show{opacity:1}
#datebox{position:fixed;right:16px;bottom:16px;z-index:7;background:var(--card);border:1px dashed var(--dash);border-radius:10px;padding:8px 10px;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--sub);box-shadow:0 2px 8px rgba(0,0,0,.08)}
#datebox input{font:inherit;font-size:13px;padding:4px 6px;border:1px solid var(--line2);border-radius:6px}
#datebox button{min-height:30px;padding:0 10px;border:1px solid var(--line2);border-radius:6px;background:var(--card);font-size:12px}
@media (max-width:1000px){.dmain{padding:28px 20px 90px}.wrap{padding:24px 16px 90px}header.top{padding:14px 16px}.opts.five{grid-template-columns:repeat(5,minmax(0,1fr))}}
@media (max-width:640px){.counts{grid-template-columns:1fr}.opts{grid-template-columns:1fr}}
/* 필기 (Apple Pencil, pen, mouse) */
#inkCanvas{position:absolute;left:0;top:0;pointer-events:none;z-index:6}
/* 태블릿 + 펜슬: 위 60 · 아래 72 막대, 가운데는 장 한 장 (세로 스크롤 없음, 옆으로 넘기기) */
.tip{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;padding:12px 16px;border-radius:12px;background:#FFF8E6;border:1px solid #E3B341;font-size:15px;line-height:1.55;flex-basis:100%}
.tip>span{flex:1 1 260px}
.ivbox{display:flex;flex-direction:column;gap:10px;padding:14px 16px;border-radius:12px;border:2px solid var(--blue);background:var(--blue-weak)}
.ivbox.done{border-width:1px;background:var(--card)}
.ivbox .ivdone li{color:var(--sub)}
.ivq{display:flex;flex-direction:column;gap:8px}
.ivopts{display:flex;flex-direction:column;gap:8px}
.ivopt{text-align:left;padding:12px 14px;min-height:48px;border-radius:10px;border:1px solid var(--line2);background:var(--card);font:inherit;font-size:15px;line-height:1.5;color:inherit;cursor:pointer}
.ivopt.no{border-color:var(--orange);color:var(--orange);text-decoration:line-through;opacity:.7}
.hints{display:flex;flex-direction:column;gap:8px}
.hints .stepbox.open{border-color:var(--blue)}
.fx{position:fixed;inset:0;z-index:90;pointer-events:none;display:flex;align-items:center;justify-content:center}
.fx .fxstamp{display:flex;align-items:center;gap:12px;padding:16px 28px;border-radius:999px;background:#fff;border:4px solid var(--blue);color:var(--blue);font-size:30px;font-weight:800;box-shadow:0 12px 40px rgba(20,30,60,.22);animation:fxpop 1.2s ease-out forwards}
.fx .fxstamp b{font-size:40px;line-height:1}
.fx.ok .fxstamp{border-color:#E3B341;color:#9A6B00}
.fx.wrong .fxstamp{border-color:var(--orange);color:var(--orange)}
.fx i{position:absolute;left:50%;top:50%;width:10px;height:16px;border-radius:2px;opacity:0;animation:fxbit 1.1s cubic-bezier(.2,.7,.3,1) forwards}
.fx.still .fxstamp{animation:fxfade .9s linear forwards}
@keyframes fxpop{0%{transform:scale(.4);opacity:0}14%{transform:scale(1.12);opacity:1}24%{transform:scale(1)}78%{opacity:1}100%{transform:scale(1);opacity:0}}
@keyframes fxbit{0%{transform:translate(-50%,-50%) rotate(0);opacity:1}100%{transform:translate(calc(-50% + var(--x)),calc(-50% + var(--y) + 120px)) rotate(var(--r));opacity:0}}
@keyframes fxfade{0%,70%{opacity:1}100%{opacity:0}}
.fxshake{animation:fxshake .42s ease-in-out}
@keyframes fxshake{0%,100%{transform:translateX(0)}20%{transform:translateX(-10px)}40%{transform:translateX(9px)}60%{transform:translateX(-6px)}80%{transform:translateX(4px)}}
.rtline{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;padding:10px 14px;border-radius:12px;background:var(--orange-weak);border:1px solid #F0C49A;font-size:14px;line-height:1.5}
.rtline>span{flex:1 1 260px}
a.tog{text-decoration:none;display:inline-flex;align-items:center;color:inherit}
.trapnote{display:flex;flex-direction:column;gap:4px;padding:10px 14px;border-radius:12px;background:#FFF6E0;border:1px solid #F0D58A;font-size:14px;line-height:1.55}
.hardtag{display:inline-block;padding:1px 8px;border-radius:999px;background:#2B2F3A;color:#fff;font-size:12px;font-weight:700;vertical-align:middle}
.slipmap{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;justify-content:space-between;padding:10px 12px;border:1px dashed var(--line2);border-radius:12px;font-size:14px}
.dq{font-size:40px;font-weight:700;letter-spacing:.5px;display:flex;flex-wrap:wrap;align-items:baseline;gap:8px;font-variant-numeric:tabular-nums}
.dq.flash{animation:dflash .5s}
@keyframes dflash{0%{color:var(--blue)}100%{color:inherit}}
.dval{display:inline-block;min-width:3.2ch;padding:0 8px;border-bottom:3px solid var(--blue);text-align:center}
.dval.no{color:var(--orange);border-color:var(--orange)}
.dprog{display:flex;flex-direction:column;gap:6px}
.dbar{display:flex;gap:4px}.dbar i{flex:1;height:10px;border-radius:5px;background:var(--bg);border:1px solid var(--line2)}.dbar i.on{background:var(--blue);border-color:var(--blue)}
.dkeys{grid-template-columns:repeat(3,minmax(0,84px))}
.drillwrap{align-items:flex-start;gap:20px}
@media (prefers-reduced-motion:reduce){.dq.flash{animation:none}}
.rmap{display:flex;flex-direction:column;gap:8px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--card)}
.rtiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:6px}
.rtile{display:flex;flex-direction:column;gap:1px;padding:6px 9px;border-radius:9px;border:1px dashed var(--dash);background:var(--bg);font-size:12px;color:var(--sub);min-width:0}
.rtile b{font-weight:500;color:var(--text);font-size:12.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rtile.pass{background:var(--blue-weak);border:1px solid var(--blue);color:var(--blue-dark)}
.rtile.fail{background:var(--orange-weak);border:1px solid var(--orange);color:var(--orange)}
.rtile.mine{border-width:2px}
.rtile.mine b{font-weight:700}
.rtile.hot{animation:rpaint .5s ease-out 1 both}
@keyframes rpaint{from{background:var(--bg);border-color:var(--dash);transform:scale(.94)}60%{transform:scale(1.05)}to{transform:none}}
@media (prefers-reduced-motion:reduce){.rtile.hot{animation:none}}
.rmap .legend{padding:0;border:0;background:none;font-size:12px;gap:4px}
.rstat{display:flex;flex-direction:column;gap:6px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.pips{display:inline-flex;gap:5px}.pips i{width:14px;height:14px;border-radius:50%;border:2px solid #8FA8E8;box-sizing:border-box}.pips i.on{background:var(--blue);border-color:var(--blue)}
.pick .rec.later{color:var(--orange);border-color:var(--orange)}
.ecol{flex:1;padding:24px;display:flex;flex-direction:column;gap:14px;min-width:0}
.tslide .ecol{padding:20px}
.estats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.estat{display:flex;flex-direction:column;gap:2px;padding:12px 14px;border-radius:12px;background:var(--bg)}
.estat b{font-size:26px;font-variant-numeric:tabular-nums}
.echanges{display:flex;flex-direction:column;gap:6px}
.echg{display:flex;justify-content:space-between;gap:10px;padding:8px 12px;border-radius:10px;font-size:14px;border:1px solid var(--line)}
.echg.pass{background:var(--blue-weak);border-color:var(--blue)}.echg.pass b{color:var(--blue-dark)}
.echg.fail{background:var(--orange-weak);border-color:var(--orange)}.echg.fail b{color:var(--orange)}
.echg b{white-space:nowrap;font-size:13px}
.tdash .ttop{gap:14px}
.tdash .ttop .logo{flex:none}
.ttabs{display:flex;gap:4px;background:var(--bg);border-radius:12px;padding:4px;margin:0 auto}
.ttab{display:flex;align-items:center;gap:6px;min-height:44px;padding:0 16px;border-radius:9px;color:var(--sub);text-decoration:none;font-size:15px;white-space:nowrap}
.ttab span{font-size:12px}
.ttab.on{background:var(--card);color:var(--text);font-weight:700;box-shadow:0 1px 3px rgba(0,0,0,.12)}
.tmenu{position:relative;flex:none}
.tmenu summary{list-style:none;cursor:pointer;min-height:44px;display:flex;align-items:center;padding:0 14px;border:1px solid var(--line2);border-radius:10px;font-size:15px}
.tmenu summary::-webkit-details-marker{display:none}
.tmenu-in{position:absolute;right:0;top:52px;z-index:12;width:360px;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,.14);padding:16px;display:flex;flex-direction:column;gap:10px}
.tdslide{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.todaybox.tt{border:2px solid var(--blue);justify-content:flex-start;align-items:stretch;flex-wrap:nowrap}
.todaybox.tt h1{font-size:28px}
.tdslide .cal{min-width:0;grid-template-columns:52px repeat(5,minmax(0,1fr));gap:4px;font-size:12px}
.tdslide .cal .c{min-height:44px;padding:4px 6px}
.tdslide .cal.sess{grid-template-columns:52px repeat(4,minmax(0,1fr))}
.tdslide .cal .c span:last-child{font-size:11px}
.tcounts{flex:1;display:flex;gap:24px;justify-content:center;font-size:15px}
.tcounts a{color:var(--text);text-decoration:none}.tcounts b{font-size:20px;margin-right:2px}
.rtiles.big{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.rtiles.big .rtile{min-height:58px;padding:8px 10px;font-size:13px;text-align:left;cursor:pointer;font:inherit}
.rtiles.big .rtile b{font-size:14px;white-space:normal}
.rtile.picked{outline:3px solid var(--blue);outline-offset:1px}
.tcombos{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.tcombo{display:grid;grid-template-columns:auto 1fr auto;grid-template-rows:auto auto;gap:2px 12px;align-items:center;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--text);text-decoration:none;min-height:64px}
.tcombo .rk{grid-row:1 / 3;font-size:18px;color:var(--blue)}
.tcombo .nm{font-size:14.5px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tcombo .stt{grid-column:3;grid-row:1 / 3;font-size:13px;font-weight:700;color:var(--sub)}
.tcombo.on .stt{color:var(--orange)}.tcombo.done .stt{color:var(--blue)}
.tcombo.done{background:var(--blue-weak);border-color:var(--blue)}
html.tdash #datebox{display:flex;bottom:84px}
.picks{display:flex;flex-direction:column;gap:8px;margin-top:6px}
.pick{display:flex;align-items:center;gap:12px;min-height:60px;padding:10px 14px;border-radius:12px;border:1px solid var(--line);background:var(--bg);text-align:left;font-size:15px;color:inherit;cursor:pointer}
.pick.on{border:2px solid var(--blue);background:var(--blue-weak)}
.pick .radio{flex:none;width:22px;height:22px;border-radius:50%;border:2px solid var(--sub);box-sizing:border-box;background:var(--card)}
.pick.on .radio{border:7px solid var(--blue)}
.pick .rec{margin-left:auto;font-size:12px;font-weight:700;color:var(--blue);background:var(--card);border:1px solid var(--blue);border-radius:6px;padding:1px 7px;white-space:nowrap}
.cover{display:flex;flex-direction:column;gap:14px;padding:22px 24px;border:1px dashed var(--line2);border-radius:14px;background:var(--bg)}
.cover.one{flex-direction:row;flex-wrap:wrap;align-items:center;gap:12px;padding:14px 18px}
.cover .ctag{font-size:14px;font-weight:700;color:var(--blue)}
.cover h2{font-size:22px}
.cover .rules{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:8px;font-size:17px;line-height:1.5}
.linkbtn{border:0;background:none;padding:0 2px;color:var(--blue);text-decoration:underline;font-size:inherit}
.linkbtn.on{color:var(--text);font-weight:700;text-decoration:none}
html.tshown,html.tshown body{overflow:hidden;height:100%}
.tshell{position:fixed;inset:0;display:flex;flex-direction:column;background:var(--bg);-webkit-user-select:none;user-select:none}
.ttop{height:60px;flex:none;display:flex;align-items:center;gap:12px;padding:0 14px;background:var(--card);border-bottom:1px solid var(--line)}
.tback{width:44px;height:44px;flex:none;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:26px;text-decoration:none;color:var(--text)}
.ttitle{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.ttitle b{font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tsteps{flex:1;display:flex;justify-content:center;gap:5px;flex-wrap:nowrap}
.tsteps span{padding:5px 11px;border-radius:999px;font-size:13px;color:var(--sub);background:var(--bg);white-space:nowrap}
.tsteps span.now{color:#fff;background:var(--blue);font-weight:700}
.tsteps span.done{color:var(--blue);background:var(--blue-weak)}
.tsteps span.skip{background:transparent;text-decoration:line-through}
.ttop .clock{padding:4px 12px;min-height:0;flex:none}
.ttop .clock span#clock{font-size:22px}
.tview{flex:1;min-height:0;overflow:hidden;touch-action:pan-y}
.ttrack{display:flex;height:100%;transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.tslide{flex:none;width:100%;height:100%;overflow-y:auto;padding:16px 20px;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:16px;align-content:start}
.tslide.s0{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr)}
.tslide:empty{display:block}
.tcol{padding:18px 20px;display:flex;flex-direction:column;gap:14px;min-width:0}
.tcol.tone{grid-column:1 / -1}
.tcol .qtext{font-size:20px}
/* fit 풀기 on one slide: shorter sheet lines, smaller keys */
.tslide.s0 .srow{height:48px}.tslide.s0 .srow>.n{top:13px}
.tslide.s0 .tcol{gap:10px}
.tslide.s0 .typed{gap:6px;padding:10px 14px}
.tslide.s0 .keypad{gap:6px}.tslide.s0 .keypad button{min-height:42px;font-size:18px}
.tslide.s0 .tval{min-height:44px}.tslide.s0 .typed>div:first-child{font-size:14px!important}
.thints summary{cursor:pointer;color:var(--sub);font-size:14px;min-height:44px;display:flex;align-items:center}
.tnums{height:60px;flex:none;display:flex;align-items:center;justify-content:center;gap:6px;padding:0 16px;background:var(--card);border-bottom:1px solid var(--line)}
.tnums button{flex:1 1 0;min-width:0;max-width:48px;height:44px;border-radius:10px;border:1px solid var(--line2);background:var(--card);font-size:15px;padding:0;color:var(--text)}
.tnums button.a{background:var(--blue-weak);border-color:var(--blue-weak);color:var(--blue-dark);font-weight:700}
.tnums button.x{background:var(--orange-weak);border-color:var(--orange-weak);color:var(--orange);font-weight:700}
.tnums button.on{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:700}
.tnums .lbl{flex:none;font-size:13px;color:var(--sub);margin-right:6px}
.ttime{padding:6px 14px;border-radius:12px;background:var(--blue-weak);color:var(--blue-dark);display:flex;gap:6px;align-items:baseline;flex:none}
.ttime .timer{font-size:22px}
.tslide.tm{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-content:stretch}
.tpad{flex:1;min-height:120px;border-radius:12px;border:1px solid var(--line);background-color:var(--card);background-image:radial-gradient(var(--line) 1px,transparent 1px);background-size:22px 22px;padding:8px 14px;font-size:13px;color:var(--sub)}
.tslide.tm .opts{grid-template-columns:repeat(2,minmax(0,1fr))}
.tfoot{height:72px;flex:none;display:flex;align-items:center;gap:12px;padding:0 16px;background:var(--card);border-top:1px solid var(--line)}
.tdots{flex:1;display:flex;justify-content:center;gap:8px}
.tdots button{width:12px;height:12px;border-radius:50%;border:0;padding:0;background:#8FA8E8}
.tdots button.on{background:var(--blue);width:30px;border-radius:6px}
.tdots button:disabled{background:var(--line)}
.trotate{display:none}
@media (orientation:portrait){html.tshown .trotate{display:flex;position:fixed;inset:0;z-index:20;background:var(--bg);align-items:center;justify-content:center;font-size:22px;font-weight:700}}
html.tshown #inkbar{bottom:84px}
html.tshown #datebox{display:none}   /* demo date box stays on the other pages */
html.tshown .toast{bottom:150px}
#inkbar{position:fixed;left:16px;bottom:16px;z-index:8;display:flex;flex-wrap:wrap;align-items:center;gap:6px;max-width:calc(100vw - 32px);background:var(--card);border:1px solid var(--line2);border-radius:12px;padding:6px;box-shadow:0 2px 10px rgba(0,0,0,.12);touch-action:manipulation;-webkit-user-select:none;user-select:none}
#inkbar[hidden]{display:none}
#inkbar button{min-height:44px;min-width:44px;padding:0 12px;border:1px solid var(--line2);border-radius:8px;background:var(--card);font-size:14px;display:inline-flex;align-items:center;justify-content:center}
#inkbar button[data-ink=toggle]{font-weight:700}
#inkbar.on button[data-ink=toggle]{background:var(--blue);color:#fff;border-color:var(--blue)}
#inkbar button[aria-pressed=true]:not([data-ink=toggle]){border:2px solid var(--blue);background:var(--blue-weak)}
#inkbar i{display:block;width:18px;height:18px;border-radius:50%}
html.inking body{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
body:has(#inkbar:not([hidden])) .toast{bottom:88px}
.mhead{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;flex-wrap:wrap}
.mhead h2{font-size:20px}
.mtog{display:flex;gap:2px;padding:3px;border:1px solid var(--line2);border-radius:10px;background:var(--bg);flex:none}
.mtog button{font:inherit;font-size:14px;border:0;background:none;color:var(--sub);padding:6px 14px;border-radius:7px;cursor:pointer;min-height:36px}
.mtog button[aria-pressed="true"]{background:var(--card);color:var(--text);font-weight:700;box-shadow:0 1px 2px rgba(0,0,0,.12)}
.mchart{min-height:0;display:flex}
.mchart.pc{aspect-ratio:16/10}
.tdslide:has(#unitCard .mchart){grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);grid-template-rows:minmax(0,1fr);align-content:stretch}
.tdslide:has(#unitCard .mchart) #picked{align-self:start}
#unitCard .mchart:not(.pc){flex:1}
.msvg{width:100%;height:100%;display:block}
.mseg{cursor:pointer}
.mseg:focus{outline:none}.mseg:focus-visible rect,.mseg:focus-visible path{stroke:var(--blue);stroke-width:2.5}
.mlab{fill:var(--text);paint-order:stroke;stroke:#fff;stroke-width:3px;stroke-linejoin:round;pointer-events:none;font-family:inherit}
.mlab.sub{fill:var(--sub)}.mlab.inv{fill:#fff;stroke:none}.mlab.unit{font-weight:700}.mlab.on{font-weight:700}.mlab.ring{fill:var(--sub);stroke-width:2.5px}
.mlegend{display:flex;flex-wrap:wrap;gap:4px 12px}
.mlegend span{display:flex;align-items:center;gap:5px}
.mlegend i{width:12px;height:12px;border-radius:3px;display:inline-block;border:1px solid var(--line2)}
.mlegend i.f{background:repeating-linear-gradient(-45deg,var(--orange) 0 2px,var(--orange-weak) 2px 5px);border-color:var(--orange)}
.mlegend i.n{background:#fff;border:1px dashed var(--dash)}
.mcrumbs{display:flex;flex-wrap:wrap;gap:6px}
.dsteps{display:flex;gap:3px}
.dsteps span{flex:1;text-align:center;font-size:12px;padding:5px 2px;border-radius:6px;background:var(--bg);color:var(--sub);white-space:nowrap}
.dsteps span.on{background:var(--blue);color:#fff;font-weight:600}
.dsteps span.bad{background:var(--orange-weak);color:var(--orange);font-weight:600}