:root{--bg:#f3f5f7;--surface:#fff;--border:#e3e7ec;--text:#1c2430;--muted:#6b7684;--primary:#0f766e;--primary-dark:#0b5d57;--primary-soft:#e6f4f2;--good:#15803d;--bad:#c62828;--warn:#b45309;--radius:10px;--header-h:56px;color:var(--text);background:var(--bg);font-family:system-ui,-apple-system,Segoe UI,Malgun Gothic,Apple SD Gothic Neo,sans-serif;font-size:15px}*{box-sizing:border-box}body{margin:0}h1{margin:0 0 16px;font-size:1.4rem}h2{margin:0 0 12px;font-size:1.05rem}a{color:var(--primary)}.page{max-width:1200px;padding:24px}.status{color:var(--muted)}.good{color:var(--good);font-weight:600}.bad{color:var(--bad);font-weight:600}button{font:inherit;background:var(--primary);color:#fff;cursor:pointer;white-space:nowrap;border:0;border-radius:6px;padding:8px 16px}button:hover:not(:disabled){background:var(--primary-dark)}button:disabled{opacity:.5;cursor:default}button.secondary{color:var(--text);border:1px solid var(--border);background:#fff}button.secondary:hover:not(:disabled){background:#f1f3f5}button.danger{color:var(--bad);background:#fff;border:1px solid #f1c4c4}button.danger:hover:not(:disabled){background:#fdf0f0}button.small{padding:4px 10px;font-size:.85rem}button.link,button.link:hover:not(:disabled){color:var(--primary);background:0 0;padding:4px}label{flex-direction:column;gap:4px;font-size:.88rem;font-weight:500;display:flex}input,select{font:inherit;border:1px solid var(--border);background:#fff;border-radius:6px;min-width:0;padding:8px 10px}input:focus,select:focus{outline:2px solid var(--primary-soft);border-color:var(--primary)}.hint{color:var(--muted);font-size:.85em;font-weight:400}.error{color:var(--bad);margin:0}.notice{background:var(--primary-soft);border-radius:6px;margin:0;padding:10px 12px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;padding:20px}.card.empty{color:var(--muted);text-align:center;padding:48px 20px}.center-page{flex-direction:column;justify-content:center;align-items:center;min-height:100vh;padding:16px;display:flex}.center-brand{color:var(--primary);margin-bottom:16px;font-size:1.5rem;font-weight:800}.form{flex-direction:column;gap:14px;width:100%;max-width:380px;display:flex}.form h1{margin:0 0 4px}.shell{flex-direction:column;min-height:100vh;display:flex}.shell-header{height:var(--header-h);background:var(--surface);border-bottom:1px solid var(--border);z-index:10;align-items:center;gap:24px;padding:0 20px;display:flex;position:sticky;top:0}.brand{color:var(--primary);font-size:1.15rem;font-weight:800;text-decoration:none}.brand-sub{color:var(--muted);margin-left:4px;font-size:.8rem;font-weight:500}.main-menu{flex:1;gap:4px;height:100%;display:flex}.main-menu a{color:var(--text);border-bottom:3px solid #0000;align-items:center;padding:0 14px;font-weight:600;text-decoration:none;display:flex}.main-menu a:hover{color:var(--primary)}.main-menu a.active{color:var(--primary);border-bottom-color:var(--primary)}.header-user{align-items:center;gap:10px;font-size:.9rem;display:flex}.shell-body{flex:1;display:flex}.side-menu{background:var(--surface);border-right:1px solid var(--border);flex-shrink:0;width:200px;padding:20px 12px}.side-menu h2{color:var(--muted);margin-bottom:8px;padding:0 10px;font-size:.8rem}.side-menu nav{flex-direction:column;gap:2px;display:flex}.side-menu a{color:var(--text);border-radius:6px;justify-content:space-between;align-items:center;padding:9px 10px;text-decoration:none;display:flex}.side-menu a:hover{background:#f1f3f5}.side-menu a.active{background:var(--primary-soft);color:var(--primary);font-weight:600}.tag{color:var(--muted);background:#eef0f3;border-radius:4px;padding:1px 6px;font-size:.7rem;font-weight:400}.shell-content{flex:1;min-width:0}@media (width<=768px){.shell-header{flex-wrap:wrap;gap:8px;height:auto;padding:10px 16px 0}.main-menu{flex:0 0 100%;order:3;overflow-x:auto}.main-menu a{white-space:nowrap;padding:10px 12px}.header-user{margin-left:auto}.shell-body{flex-direction:column}.side-menu{border-right:0;border-bottom:1px solid var(--border);width:auto;padding:8px 16px}.side-menu h2{display:none}.side-menu nav{flex-direction:row;overflow-x:auto}.side-menu a{white-space:nowrap;gap:6px}.page{padding:16px}}.topbar{background:var(--surface);border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:12px;padding:10px 16px;display:flex}.topbar-title{color:var(--primary);font-size:1.1rem;font-weight:800}.topbar-nav{flex:1;gap:14px;display:flex}.topbar-nav a{color:var(--text);font-weight:500;text-decoration:none}.topbar-nav a.active{color:var(--primary);font-weight:700}.topbar-nav a{white-space:nowrap}@media (width<=600px){.topbar-nav{flex:0 0 100%;order:3;overflow-x:auto}.topbar-user{margin-left:auto}}.table-wrap{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:.9rem}th,td{text-align:left;white-space:nowrap;border-bottom:1px solid #eef0f3;padding:10px 12px}th{color:var(--muted);background:#f8f9fb;font-size:.82rem;font-weight:600}tbody tr:hover{background:#fafbfc}.row-actions{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.toolbar{flex-wrap:wrap;align-items:end;gap:10px;margin-bottom:12px;display:flex}.temp-password{letter-spacing:1px;font-family:ui-monospace,Consolas,monospace;font-size:1.2rem;font-weight:700}.modal-backdrop{z-index:50;background:#0f172a73;justify-content:center;align-items:flex-start;padding:48px 16px;display:flex;position:fixed;inset:0;overflow-y:auto}.modal{background:var(--surface);border-radius:var(--radius);width:100%;max-width:520px;box-shadow:0 10px 30px #0003}.modal.wide{max-width:760px}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.modal-header h2{margin:0}.modal-body{padding:20px}.modal-footer{border-top:1px solid var(--border);justify-content:flex-end;gap:8px;padding:12px 20px;display:flex}.form-grid{grid-template-columns:1fr 1fr;gap:12px 16px;display:grid}.form-grid .full{grid-column:1/-1}@media (width<=600px){.form-grid{grid-template-columns:1fr}}textarea{font:inherit;border:1px solid var(--border);resize:vertical;border-radius:6px;min-height:70px;padding:8px 10px}label.check{flex-direction:row;align-items:center;gap:8px}.pagination{justify-content:center;align-items:center;gap:12px;margin-top:12px;display:flex}.badge{color:var(--muted);background:#eef0f3;border-radius:999px;padding:2px 8px;font-size:.75rem;font-weight:600;display:inline-block}.badge.ok{background:var(--primary-soft);color:var(--primary)}.badge.off{color:var(--bad);background:#fdecec}.badge.warn{color:var(--warn);background:#fdf3e6}.page-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px;display:flex}.page-header h1{margin:0}.info-list{grid-template-columns:140px 1fr;gap:8px 12px;margin:0;display:grid}.info-list dt{color:var(--muted)}.info-list dd{margin:0}tr.row-error td{background:#fdf0f0}tr.row-warn td{background:#fffaf0}tr.clickable{cursor:pointer}tr.row-muted td{color:var(--muted)}.schedule-row{align-items:center;gap:6px;margin-bottom:6px;display:flex}.schedule-row select{width:auto}.pick-list{border:1px solid var(--border);border-radius:6px;max-height:340px;margin-top:8px;padding:6px 10px;overflow-y:auto}.pick-list label.check{border-bottom:1px solid #f1f3f5;padding:6px 0}.pick-list label.check.disabled{opacity:.55}.lesson-list{margin:0;padding:0;list-style:none}.lesson-list li{border-bottom:1px solid var(--border);align-items:baseline;gap:12px;padding:10px 0;display:flex}.lesson-list li:last-child{border-bottom:0}.lesson-time{color:var(--primary);min-width:96px;font-weight:700}.week-day{border-bottom:1px solid var(--border);padding:8px 0}.week-day.today{background:var(--primary-soft);border-radius:6px;padding:8px}@media (width<=768px){.table-wrap.cards{background:0 0;border:0}.cards table,.cards tbody,.cards tr,.cards td{display:block}.cards thead{display:none}.cards tr{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:10px;padding:8px 4px}.cards td{white-space:normal;border:0;padding:4px 12px}.cards td[data-label]:before{content:attr(data-label);min-width:90px;color:var(--muted);font-size:.85em;display:inline-block}.info-list{grid-template-columns:110px 1fr}}.month-nav{align-items:center;gap:10px;display:flex}.att-list{margin:8px 0 0;padding:0;list-style:none}.att-list li{border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:8px 16px;padding:10px 0;display:flex}.att-name{flex:160px}.status-buttons{gap:4px;display:flex}.status-buttons button{background:var(--surface);color:var(--text);border:1px solid var(--border);min-width:56px;padding:8px 12px}.status-buttons button.on{color:#fff;border-color:#0000}.status-buttons .on.present,.badge.att.present,.session.done{background:var(--good);color:#fff}.status-buttons .on.late,.badge.att.late,.session.partial{background:var(--warn);color:#fff}.status-buttons .on.absent,.badge.att.absent,.session.missing{background:var(--bad);color:#fff}.status-buttons .on.excused,.badge.att.excused{color:#fff;background:#475569}.att-memo{flex:100%}.legend{flex-wrap:wrap;gap:6px;display:flex}.session{white-space:nowrap;text-overflow:ellipsis;border-radius:4px;margin-top:3px;padding:2px 6px;font-size:.78rem;text-decoration:none;display:block;overflow:hidden}.legend .session{margin:0;display:inline-block}.session.closed{color:var(--muted);background:#e5e7eb}.session.extra{background:var(--primary-soft);color:var(--primary)}.session.upcoming{background:var(--surface);color:var(--muted);border:1px dashed var(--border)}.calendar{grid-template-columns:repeat(7,minmax(0,1fr));gap:4px;display:grid}.calendar-head{text-align:center;color:var(--muted);font-size:.85rem}.calendar-cell{background:var(--surface);border:1px solid var(--border);border-radius:6px;min-width:0;min-height:84px;padding:4px}.calendar-cell.empty{background:0 0;border:0}.calendar-cell.today{border-color:var(--primary);box-shadow:inset 0 0 0 1px var(--primary)}.calendar-date{font-size:.85rem;font-weight:700}table.monthly th,table.monthly td{text-align:center;white-space:nowrap;padding:6px 4px}table.monthly td:first-child,table.monthly th:first-child{text-align:left;background:var(--surface);position:sticky;left:0}table.monthly th.extra{color:var(--primary)}table.monthly td.cell.present{color:var(--good);font-weight:700}table.monthly td.cell.late{color:var(--warn);font-weight:700}table.monthly td.cell.absent{color:var(--bad);font-weight:700}table.monthly td.cell.closed,table.monthly th.closed{color:var(--muted);background:#f3f4f6}.kiosk{background:var(--bg);flex-direction:column;min-height:100vh;display:flex}.kiosk-header{background:var(--primary);color:#fff;justify-content:space-between;align-items:center;padding:12px 20px;font-size:1.1rem;display:flex}.kiosk-header .link{color:#fff;opacity:.7}.kiosk-body{flex:1;grid-template-columns:1fr 1fr;gap:20px;padding:20px;display:grid}.kiosk-camera,.kiosk-pad{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);flex-direction:column;justify-content:center;align-items:center;padding:20px;display:flex}.qr-camera{flex-direction:column;align-items:center;gap:12px;width:100%;display:flex}.qr-camera video{background:#000;border-radius:8px;width:100%;max-height:60vh;transform:scaleX(-1)}.photo-button{border:1px solid var(--border);cursor:pointer;border-radius:6px;padding:8px 14px}.kiosk-guide{text-align:center;font-size:1.1rem}.kiosk-display{letter-spacing:.2em;min-height:3.2rem;margin-bottom:12px;font-size:2.4rem;font-weight:700}.keypad{grid-template-columns:repeat(3,1fr);gap:10px;width:100%;max-width:360px;display:grid}.key{min-width:96px;padding:18px 0;font-size:1.6rem}.key.ok{background:var(--good)}.kiosk-message{text-align:center;border-radius:var(--radius);width:100%;padding:24px;font-size:1.2rem}.kiosk-big{font-size:2rem;font-weight:800;line-height:1.4}.good-bg{background:#e8f6ec}.bad-bg{color:var(--bad);background:#fdecec}@media (width<=760px){.kiosk-body{grid-template-columns:1fr}.calendar-cell{min-height:56px}.session{padding:1px 3px;font-size:.68rem}}.my-qr{text-align:center;flex-direction:column;align-items:center;gap:12px;display:flex}.my-qr img{width:min(80vw,320px);height:auto;image-rendering:pixelated;background:#fff;border-radius:8px;padding:12px}.my-qr-no{flex-direction:column;align-items:center;gap:4px;margin:0;display:flex}.my-qr-no strong{font-size:2rem;line-height:1.2}a.button{background:var(--primary);color:#fff;white-space:nowrap;border-radius:6px;padding:8px 14px;font-weight:600;text-decoration:none;display:inline-block}.mini-calendar{text-align:center;grid-template-columns:repeat(7,minmax(0,1fr));gap:3px;font-size:.8rem;display:grid}.mini-calendar .day{background:var(--bg);border-radius:4px;min-height:48px;padding:2px}.mini-calendar .day.empty{background:0 0}.mini-calendar .day .badge{margin-top:2px;padding:1px 2px;font-size:.72rem;display:block}.text-body{white-space:pre-wrap;word-break:break-word;line-height:1.7}.notice-list{margin:0;padding:0;list-style:none}.notice-list li{border-bottom:1px solid var(--border)}.notice-list li:last-child{border-bottom:0}.notice-list a{color:var(--text);align-items:baseline;gap:8px;padding:12px 4px;text-decoration:none;display:flex}.notice-list a:hover{background:var(--bg)}.notice-list .unread{font-weight:700}.dot{background:var(--bad);border-radius:50%;flex-shrink:0;width:8px;height:8px;display:inline-block}.notice-list .meta{white-space:nowrap;color:var(--muted);margin-left:auto;font-size:.85rem}.hw-card{border:1px solid var(--border);background:var(--surface);border-radius:8px;margin-bottom:8px;padding:10px 12px}.hw-card .due{color:var(--primary);font-weight:700}.hw-card .due.soon{color:var(--bad)}.pick-chips{flex-wrap:wrap;gap:6px;display:flex}.pick-chips label.check{border:1px solid var(--border);border-radius:999px;padding:4px 10px}.study-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}@media (width<=600px){.study-grid{grid-template-columns:1fr}}table.bill td{border-bottom:1px solid var(--border);white-space:normal;word-break:keep-all;padding:8px 6px}table.bill{width:100%}@media (width<=600px){table.bill td.hint{font-size:.8rem}}table.bill td.num{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}table.bill tr.total td{border-bottom:0;font-size:1.05rem;font-weight:800}.score-input{flex-direction:row;align-items:center;gap:6px}.score-input input{width:80px}.video-frame{aspect-ratio:16/9;background:#000;border-radius:8px;width:100%;margin-bottom:4px;position:relative;overflow:hidden}.video-frame iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.video-thumb{aspect-ratio:16/9;object-fit:cover;background:#eef0f3;border-radius:6px;flex:none;width:120px}.lecture-row{text-align:left;align-items:flex-start;gap:12px;width:100%;display:flex}.lecture-row .lecture-info{flex:auto;min-width:0}.lecture-row .lecture-info strong{overflow-wrap:anywhere}.unit-title{color:var(--muted);margin:14px 0 6px;font-size:.9rem}.check-list{flex-wrap:wrap;gap:6px 14px;display:flex}.check-list label{flex-direction:row;align-items:center;gap:6px;font-weight:400;display:flex}@media (width<=600px){.video-thumb{width:96px}}a.lecture-row{color:inherit;text-decoration:none}a.lecture-row strong{color:var(--primary)}.stat-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-bottom:16px;display:grid}.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:inherit;min-width:0;padding:12px 14px;text-decoration:none;display:block}a.stat:hover{border-color:var(--primary)}.stat-label{color:var(--muted);font-size:.82rem}.stat-value{overflow-wrap:anywhere;margin:2px 0;font-size:1.35rem;font-weight:700}.today-strip{background:#f3f8f6;border-radius:8px;flex-wrap:wrap;gap:4px 14px;margin-bottom:10px;padding:8px 10px;font-size:.92rem;display:flex}.score-chart{width:100%;max-width:480px;height:auto;margin:4px 0 8px;display:block}@media (width<=600px){.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.stat-value{font-size:1.1rem}}.problem-body{margin:0 0 6px;line-height:1.7}.problem-image{border:1px solid var(--border);background:#fff;border-radius:6px;max-width:100%;height:auto;max-height:420px;margin:6px 0;display:block}.choice-list{gap:4px;margin:6px 0;padding:0;list-style:none;display:grid}.choice-buttons{flex-wrap:wrap;gap:6px;margin:8px 0;display:flex}.choice-buttons button{min-width:48px;font-size:1.1rem}.short-answer{width:100%;max-width:320px;margin:8px 0;font-size:1.05rem}.graded{border:1px solid var(--border);background:var(--surface);border-left-width:4px;border-radius:8px;margin-bottom:10px;padding:10px 12px 10px 44px;position:relative}.graded.right{border-left-color:var(--primary)}.graded.wrong{border-left-color:var(--bad)}.graded-mark{font-size:1.4rem;font-weight:700;position:absolute;top:8px;left:12px}.graded.right .graded-mark{color:var(--primary)}.graded.wrong .graded-mark{color:var(--bad)}.paste-zone{border:2px dashed var(--border);text-align:center;color:var(--muted);cursor:pointer;border-radius:8px;padding:12px}.paste-zone:focus{border-color:var(--primary);color:var(--primary);outline:none}.result-grid td.mark{text-align:center;font-weight:700}