:root{--ink:#22352f;--muted:#7b8780;--line:#e5e9e3;--green:#285749;--soft:#e9f1eb;--paper:#f6f7f2;--orange:#b47837;--danger:#ae5346;--radius:17px;font-family:'Noto Sans KR',-apple-system,BlinkMacSystemFont,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
[hidden]{display:none!important}
.stat-value.money{font-size:25px;white-space:nowrap;letter-spacing:-.8px}.stat-value.money span{font-size:11px}
*{box-sizing:border-box}body{margin:0;font-size:14px}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible{outline:3px solid #92b99b;outline-offset:3px}a{color:inherit;text-decoration:none}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}button svg{width:17px;height:17px}button{border:0;background:none;color:inherit}h1,h2,h3,p{margin:0}h1{font-size:29px;letter-spacing:-1.3px;font-weight:700}h2{font-size:17px;letter-spacing:-.5px}h3{font-size:15px}small,.muted{color:var(--muted)}small{font-size:12px}.mono{font-variant-numeric:tabular-nums}strong{font-weight:650}
#sidebar{position:fixed;width:226px;inset:0 auto 0 0;background:#fbfcf9;border-right:1px solid var(--line);padding:37px 20px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;gap:11px;align-items:center;padding:0 10px}.brand-mark{background:var(--green);color:#fff;width:38px;height:38px;display:grid;place-items:center;border-radius:12px}.brand-name{font-size:22px;letter-spacing:-1px;font-weight:750}.brand-sub{font-size:10px;letter-spacing:1.6px;color:var(--muted);margin-top:2px}.nav-label{font-size:10px;letter-spacing:1.7px;color:#98a098;margin:49px 14px 12px}.nav-item{display:flex;gap:13px;align-items:center;padding:14px 15px;border-radius:10px;margin:4px 0;color:#7d8981;font-size:13px;font-weight:500}.nav-item.active{color:var(--green);background:var(--soft);font-weight:700}.nav-item:hover{background:#eef1eb}.nav-badge{margin-left:auto;background:#dce8df;border-radius:6px;font-size:11px;padding:1px 6px}.sidebar-bottom{margin-top:auto;padding:18px 12px;border-top:1px solid var(--line);font-size:12px;line-height:1.9}.avatar{width:32px;height:32px;border-radius:50%;background:#e4ebe1;display:grid;place-items:center;color:var(--green);font-size:12px}.teacher{display:flex;gap:10px;align-items:center;margin-top:16px}.workspace{margin-left:226px}.demo-banner{height:37px;padding:9px 42px;background:#edf0e6;border-bottom:1px solid #e3e7dc;color:#7a846d;font-size:11px;display:flex;align-items:center;gap:7px}.demo-dot{width:5px;height:5px;border-radius:50%;background:#94a56f}main{max-width:1500px;margin:0 auto;padding:38px 42px 28px}footer{font-size:10px;color:#9ba39b;padding:16px 42px 28px}#mobile-nav{display:none}.page-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:29px}.eyebrow{font-size:11px;color:#839079;margin-bottom:8px;letter-spacing:1.5px}.subtitle{font-size:12px;color:var(--muted);margin-top:9px}.actions{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.btn{display:inline-flex;gap:7px;align-items:center;justify-content:center;padding:11px 15px;border-radius:9px;font-size:12px;font-weight:600;white-space:nowrap;background:white;border:1px solid var(--line);min-height:40px}.btn:hover{border-color:#a9bcad}.btn.primary{background:var(--green);border-color:var(--green);color:white}.btn.primary:hover{background:#1b4337}.btn.soft{background:var(--soft);color:var(--green);border-color:transparent}.btn.danger{color:var(--danger);border-color:#e7d8d2}.btn.small{min-height:32px;padding:6px 10px;font-size:11px}.btn.icon{width:37px;padding:8px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin-bottom:29px}.stat{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;position:relative}.stat-label{font-size:12px;color:var(--muted)}.stat-value{font-size:31px;letter-spacing:-1.2px;line-height:1.4;font-weight:600;margin:8px 0 3px}.stat-value span{font-size:13px;font-weight:400;margin-left:5px;letter-spacing:0;color:var(--muted)}.stat-foot{font-size:10px;color:#929b91}.stat-icon{position:absolute;right:20px;top:19px;color:#91a18f}.stat-icon svg{width:17px;height:17px}.stat.attention{background:#f6f0e5;border-color:#ece3d3}.stat.attention .stat-value{color:#9a6c2c}.columns{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:22px;align-items:start}.panel{background:white;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:20px}.panel-head{padding:21px 23px;display:flex;justify-content:space-between;gap:12px;align-items:center;border-bottom:1px solid var(--line)}.panel-body{padding:21px 23px}.tag{display:inline-flex;align-items:center;font-size:10px;line-height:1.6;border-radius:5px;padding:3px 7px;background:#f0f2ec;color:#72806e;white-space:nowrap}.tag.green{background:#e7f1e9;color:#437357}.tag.orange{background:#f7eddc;color:#a07733}.tag.red{background:#f7e9e5;color:#ae6656}.tag.blue{background:#e8eef4;color:#647f9d}.lesson{display:grid;grid-template-columns:72px minmax(0,1fr);gap:17px;padding:23px;border-bottom:1px solid var(--line)}.lesson:last-child{border:0}.lesson-time{font-size:18px;font-weight:600;letter-spacing:-.5px;padding-top:3px}.lesson-time small{display:block;font-size:11px;font-weight:400;letter-spacing:0;margin-top:5px}.lesson-title{display:flex;align-items:center;gap:9px;margin-bottom:12px}.lesson-title 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#e5e7d6;background:#f6f6ec;border-radius:9px;font-size:11px;color:#8a825c;line-height:1.8;margin:15px 0}.notice.success{color:#487055;background:#edf4ed;border-color:#dce8dc}.notice.error{color:#9f5143;background:#fbefeb;border-color:#eed8d0}.data-table{width:100%;border-collapse:collapse;text-align:left;font-size:12px}.table-wrap{overflow:auto}.data-table th{font-size:10px;color:var(--muted);font-weight:500;white-space:nowrap;background:#fafbf7;padding:13px 19px;border-bottom:1px solid var(--line)}.data-table td{padding:16px 19px;border-bottom:1px solid #edf0e9;white-space:nowrap}.data-table tr:last-child td{border:0}.data-table tbody tr:hover{background:#fafcf7}.progress{width:76px;height:4px;background:#e9ede5;border-radius:5px;margin-top:7px;overflow:hidden}.progress i{display:block;background:#8daa8a;height:100%}.progress.warning i{background:#c8a272}.empty{text-align:center;padding:49px 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4px,#eef0e9 5px)}.cal-event{position:absolute;left:5px;right:5px;background:#eaf1e8;border:1px solid #dfe9dc;border-left:3px solid #91ac92;border-radius:7px;padding:8px;overflow:auto;font-size:10px;cursor:pointer}.cal-event.high{background:#f5eee3;border-color:#eee3d0;border-left-color:#c8a272}.cal-event.third{background:#eaf0f5;border-color:#dce5ed;border-left-color:#8b9fb7}.cal-event small{font-size:9px;color:#84907b}.cal-event strong{font-size:11px;display:block;margin:4px 0 6px}.cal-name{font-size:10px;margin:4px 0;display:flex;justify-content:space-between;gap:3px}.month{display:grid;grid-template-columns:repeat(7,minmax(0,1fr))}.month .day-label{padding:12px;text-align:center;font-size:10px;color:var(--muted);border-bottom:1px solid var(--line)}.month-day{min-height:125px;border-right:1px solid #edf0e9;border-bottom:1px solid #edf0e9;padding:9px;cursor:pointer}.month-day:hover{background:#f5f8f0}.month-day.outside{background:#fafbf7;color:#bac1b4}.month-day .num{font-size:11px;margin-bottom:9px}.month-day.today .num span{background:var(--green);color:#fff;border-radius:50%;padding:4px 6px}.month-lesson{font-size:9px;background:#edf3e9;border-radius:4px;padding:3px 5px;margin:3px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.settings-grid .panel-body{padding:24px}.policy-list{display:flex;flex-direction:column;gap:14px}.policy-row{display:flex;justify-content:space-between;gap:12px;font-size:12px;border-bottom:1px solid #edf0e9;padding-bottom:13px}.policy-row:last-child{border:0;padding:0}.policy-row span{color:var(--muted)}.method-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:24px}.method-box{border:1px solid var(--line);border-radius:12px;background:white;padding:17px}.method-box strong{font-size:17px;display:block;margin:10px 0 5px;letter-spacing:-.5px}.method-box small{font-size:10px}dialog{border:1px solid var(--line);border-radius:19px;padding:0;width:min(650px,calc(100% - 28px));max-height:90dvh;color:var(--ink);box-shadow:0 24px 90px #152a2530}dialog::backdrop{background:#20372c65;backdrop-filter:blur(3px)}.dialog-head{display:flex;justify-content:space-between;align-items:center;padding:23px 25px;border-bottom:1px solid var(--line)}.dialog-head h2{font-size:19px}.dialog-body{padding:2px 25px 24px}.dialog-footer{display:flex;gap:9px;justify-content:flex-end;border-top:1px solid var(--line);padding:17px 25px;position:sticky;bottom:0;background:white}.dialog-footer .left{margin-right:auto}.dialog-body .panel{margin-top:20px}.detail-hero{display:flex;gap:17px;align-items:center;margin:22px 0}.detail-hero .avatar{width:50px;height:50px;font-size:19px}.detail-hero h2{font-size:21px}.detail-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:17px}.detail-stats div{background:#f3f6ee;border-radius:10px;padding:15px}.detail-stats strong{display:block;font-size:22px;margin-bottom:4px}.detail-stats small{font-size:10px}.history{padding:11px 0;border-bottom:1px solid #edf0e9;display:flex;gap:12px;align-items:center;font-size:11px}.history:last-child{border:0}.history .muted{margin-left:auto;font-size:10px}.slot-results{display:grid;grid-template-columns:1fr 1fr;gap:8px;max-height:235px;overflow:auto;margin:13px 0}.slot-choice{text-align:left;border:1px solid var(--line);border-radius:8px;padding:11px}.slot-choice:hover,.slot-choice.selected{border-color:#6d9474;background:#eef5eb}.slot-choice strong{font-size:12px;display:block}.slot-choice small{font-size:9px;display:block;margin-top:5px}.refund-amount{text-align:center;background:#f3f6ed;border-radius:12px;padding:22px;margin-top:22px}.refund-amount strong{font-size:29px;display:block;margin:9px}.error-message{font-size:12px;color:var(--danger);line-height:1.8;margin-top:14px}#toast{position:fixed;bottom:28px;left:calc(50% + 90px);transform:translate(-50%,15px);background:#254d40;color:white;border-radius:11px;padding:13px 20px;font-size:12px;box-shadow:0 8px 30px #1c3a2525;z-index:100;opacity:0;pointer-events:none;transition:.2s;max-width:90vw}#toast.show{opacity:1;transform:translate(-50%,0)}.audit-row{padding:13px 0;border-bottom:1px solid #edf0e9;font-size:11px;line-height:1.8}.audit-row small{display:block;font-size:9px}
@media(min-width:1500px){main{padding-top:45px}.lesson{padding:27px}.student-row{padding:12px}}
@media(max-width:1150px){#sidebar{width:195px;padding:32px 14px}.workspace{margin-left:195px}main{padding:28px 25px}.demo-banner{padding-left:25px}.columns{grid-template-columns:minmax(0,1fr) 250px;gap:17px}.stat{padding:18px}.student-row{gap:7px}.quick-actions button{padding:6px}.student-school{max-width:145px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}
@media(max-width:940px){.columns{grid-template-columns:1fr}.side-panels{display:grid;grid-template-columns:1fr 1fr;gap:18px}.side-panels .note-card{display:none}.settings-grid{grid-template-columns:1fr}.stat-value{font-size:26px}.stat-icon{display:none}}
@media(max-width:700px){body{font-size:13px}#sidebar{display:none}.workspace{margin-left:0}.demo-banner{font-size:10px;padding:8px 17px;height:33px;white-space:nowrap;overflow:hidden}.desktop-only{display:none}main{padding:26px 17px 90px}footer{display:none}h1{font-size:25px}.page-head{gap:12px;align-items:flex-start;margin-bottom:23px}.eyebrow{font-size:9px;margin-bottom:6px}.subtitle{font-size:10px;line-height:1.8}.page-head>.actions{justify-content:flex-end}.btn{font-size:11px;padding:10px 12px}.stats{grid-template-columns:1fr 1fr;gap:10px;margin-bottom:21px}.stat{padding:16px 17px;border-radius:13px}.stat-value{font-size:28px;margin-top:6px}.stat-label{font-size:11px}.stat-foot{font-size:9px}.panel{border-radius:13px}.panel-head{padding:17px}.panel-head h2{font-size:15px}.panel-body{padding:17px}.lesson{padding:17px;grid-template-columns:53px minmax(0,1fr);gap:9px}.lesson-time{font-size:16px}.lesson-time small{font-size:10px}.lesson-title{gap:6px}.lesson-title h3{font-size:12px}.student-row{padding:10px 9px;gap:8px;flex-wrap:wrap}.student-info{min-width:90px}.student-name{font-size:12px}.student-school{font-size:9px}.quick-actions{margin-left:auto}.quick-actions button{padding:7px 9px;min-height:32px}.circle{width:25px;height:25px;font-size:11px}.student-row>.tag{font-size:9px}.side-panels{grid-template-columns:1fr;gap:0}.side-panels .panel:nth-child(2){display:none}#mobile-nav{position:fixed;bottom:0;left:0;right:0;background:#fbfcf9f5;border-top:1px solid #e0e7dc;backdrop-filter:blur(10px);display:flex;z-index:30;padding:7px 7px max(9px,env(safe-area-inset-bottom))}#mobile-nav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;color:#8c998a;padding:5px;font-size:9px}#mobile-nav a.active{color:var(--green);font-weight:700}#mobile-nav a.active svg{stroke-width:2.2}#toast{bottom:92px;left:50%;width:max-content;font-size:11px}.method-summary{grid-template-columns:1fr 1fr;gap:10px}.method-box{padding:14px}.method-box strong{font-size:16px}.data-table th,.data-table td{padding:13px 14px}.toolbar{gap:13px}.date-nav{gap:5px}.date-nav input{width:137px;font-size:11px}.segmented button{padding:7px 11px}.month-day{min-height:100px;padding:5px}.month-lesson{font-size:8px;padding:3px}.month-day .num{font-size:10px}.month .day-label{padding:10px 4px}.month{min-width:550px}.month-wrap{overflow:auto}.filters{gap:7px}.filters select{max-width:145px}.form-grid{gap:14px 10px}.dialog-head{padding:20px}.dialog-body{padding:0 20px 22px}.dialog-footer{padding:15px 20px}.dialog-head h2{font-size:17px}dialog{max-height:92dvh}.slot-results{grid-template-columns:1fr}.settings-grid{gap:0}.detail-stats div{padding:12px}.detail-stats strong{font-size:20px}.actions .btn.hide-small{display:none}}
@media(max-width:700px){.stat-value.money{font-size:21px;letter-spacing:-.6px}.stat-value.money span{font-size:10px;margin-left:3px}.panel-head{flex-wrap:wrap}.panel-head h2{white-space:nowrap}.panel-head .date-nav{width:100%;justify-content:space-between}.panel-head .date-nav input{flex:1;width:auto;max-width:220px}}
@media(max-width:700px){#main[data-page="today"] .stats .stat:nth-child(2),#main[data-page="today"] .stats .stat:nth-child(4){display:none}#main[data-page="today"] .page-head .subtitle{display:none}.eyebrow{display:none}}
.logout-form{margin-left:auto}.logout-form button{font-size:11px;color:#526e56}.login-page{min-height:100dvh;display:grid;place-items:center}.login-card{width:min(420px,calc(100% - 32px));margin:40px auto;padding:36px!important;background:white;border:1px solid var(--line);border-radius:20px}.login-card h1{font-size:24px;margin-top:32px}.login-card .btn{width:100%}.login-card>.help{margin-top:22px}.unpaid-note{color:#a85e3b;font-size:10px}.connection-banner{background:#f6e9dc;color:#8c5d39;padding:12px 17px;font-size:11px}