@charset "UTF-8";
:root{--blue:#2158ef;--blue-light:#edf3ff;--ink:#17243f;--muted:#738099;--line:#e8edf5;--bg:#f6f8fc;--green:#168b68;--orange:#b97517;--radius:16px;font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);font-synthesis:none;font-size:16px}
*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.6}a{color:inherit;text-decoration:none}button{border:0}button:focus-visible,a:focus-visible{outline:3px solid #93b4ff;outline-offset:4px}input:focus,select:focus,textarea:focus{outline:2px solid #a8c0ff;border-color:var(--blue)}.skip{position:fixed;top:-60px;left:20px;padding:12px;background:white;z-index:100}.skip:focus{top:12px}.sidebar{width:250px;position:fixed;inset:0 auto 0 0;background:white;border-right:1px solid var(--line);padding:32px 20px 18px;z-index:20;display:flex;flex-direction:column;overflow-y:auto}.brand{display:flex;align-items:center;gap:12px;padding:0 10px;font-size:23px;font-weight:750;letter-spacing:-.8px}.brand small{display:block;font-size:12px;font-weight:400;color:var(--muted);letter-spacing:1.6px;margin-top:6px}.brand-mark{width:39px;height:42px;border-radius:11px;background:var(--blue);color:white;font-size:32px;font-weight:800;line-height:46px;text-align:center;position:relative}.brand-mark span{position:absolute;width:8px;height:8px;background:#a8c4ff;top:9px;right:7px;border-radius:2px}.workspace{display:flex;gap:10px;align-items:center;background:#f7f9fc;padding:14px 10px;border:1px solid var(--line);border-radius:10px;margin:32px 0 28px;font-size:14px;font-weight:600}.workspace small{display:block;font-weight:400;font-size:11px;color:var(--muted);margin-top:5px}.workspace-icon{width:31px;height:33px;background:#e8eef9;color:#526b99;display:grid;place-items:center;border-radius:8px}.nav-label{font-size:12px;color:#929db0;margin:0 14px 12px;letter-spacing:1.5px}nav{display:grid;gap:7px}.nav-link{display:flex;align-items:center;gap:13px;padding:13px 15px;color:#66738a;font-size:14px;border-radius:9px;transition:background .2s}.nav-link:hover{background:#f5f7fc}.nav-link.active{background:var(--blue-light);color:var(--blue);font-weight:650}.nav-link.active:before{content:"";height:20px;width:3px;background:var(--blue);position:absolute;left:0;border-radius:0 3px 3px 0}.nav-link .count{margin-left:auto;font-size:12px;background:#dce7ff;padding:2px 7px;border-radius:5px}.nav-link svg,.icon svg{width:20px;height:20px;stroke:currentColor;stroke-width:1.7;fill:none;stroke-linecap:round;stroke-linejoin:round}.sidebar-bottom{margin-top:auto;padding-top:36px}.ai-card{background:linear-gradient(135deg,#eef3ff,#f7faff);border:1px solid #e0e9ff;border-radius:12px;padding:17px}.ai-spark{display:block;color:var(--blue);font-size:27px;margin-bottom:8px}.ai-card strong{font-size:14px}.ai-card p{font-size:12px;color:var(--muted);line-height:1.9;margin:9px 0 15px}.soon{display:inline-block;background:white;border:1px solid #dde7fe;color:#7b8fb4;border-radius:5px;padding:4px 8px;font-size:11px}.quiet{background:none;color:var(--muted);padding:8px;font-size:13px}.reset{margin:17px 0 8px;width:100%;text-align:left}.sidebar-foot{display:flex;align-items:center;gap:7px;color:#98a3b3;font-size:11px;padding:12px 8px 0;border-top:1px solid var(--line)}.sidebar-foot>span:last-child{margin-left:auto}.status-dot{width:6px;height:6px;border-radius:50%;background:#51b995}.app-shell{margin-left:250px;min-height:100vh}.topbar{height:82px;padding:0 42px;background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:20px}.breadcrumb{display:flex;gap:16px;align-items:center;font-size:13px;color:var(--muted)}.breadcrumb strong{font-weight:500;color:#3d4d68}.slash{color:#cad0dc}.top-actions{display:flex;gap:20px;align-items:center}.demo-badge{border:1px solid #e4e9f2;color:#7d89a0;font-size:11px;padding:5px 9px;border-radius:5px}.role-switch{color:#51647f;background:none;font-size:13px}.profile{display:flex;align-items:center;gap:10px;background:none;color:var(--ink);font-size:13px;border-left:1px solid var(--line);padding-left:20px}.avatar{width:34px;height:34px;display:inline-grid;place-items:center;border-radius:50%;background:#e6eefe;color:#3762b3;font-weight:600}.avatar.student{background:#e4f4ec;color:#287258}.chevron{color:#7b879b;margin-left:8px}main{max-width:1570px;margin:auto;padding:35px 42px 24px;min-height:calc(100vh - 145px);outline:none}.page-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:27px;gap:20px}.eyebrow{font-size:11px;font-weight:650;letter-spacing:2px;color:#8c9ab0;margin-bottom:9px}h1{font-size:27px;margin:0 0 10px;letter-spacing:-.8px;font-weight:650}.page-heading p{font-size:13px;color:var(--muted);margin:0}.heading-actions{display:flex;gap:10px;align-items:center}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:8px;padding:11px 16px;font-size:14px;font-weight:550;white-space:nowrap;transition:.18s;background:white;border:1px solid #dfe5ef;color:#4d5e79}.button:hover{background:#f3f6fc;transform:translateY(-1px)}.button.primary{background:var(--blue);color:white;border-color:var(--blue);box-shadow:0 4px 9px #2158ef17}.button.primary:hover{background:#1749d4}.button.small{padding:8px 12px;font-size:12px}.button svg{width:16px;height:16px}.date-chip{display:flex;gap:8px;align-items:center;font-size:12px;color:#8190a5}.welcome{background:#eaf1ff;border:1px solid #dce7ff;border-radius:14px;padding:23px 27px;display:flex;justify-content:space-between;align-items:center;margin-bottom:25px;gap:20px;overflow:hidden;position:relative}.welcome-copy{z-index:1}.welcome h2{font-size:19px;letter-spacing:.1px;margin:0 0 8px;font-weight:600;color:#25447c}.welcome p{font-size:13px;color:#7488ab;margin:0;line-height:1.8}.welcome-art{width:178px;position:relative;display:flex;gap:7px;align-items:flex-end;justify-content:center;transform:rotate(-10deg);flex-shrink:0}.book{width:36px;height:61px;border-radius:5px 9px 9px 5px;background:#4073f2;border-bottom:5px solid #a8c6ff;position:relative;box-shadow:8px 8px 0 #c7d8ff66}.book:before{content:"";position:absolute;left:7px;right:7px;top:10px;height:2px;background:#ffffff88}.book:nth-child(2){height:79px;background:#a7c4ff;transform:rotate(9deg)}.book:nth-child(3){height:51px;background:#264da0;transform:rotate(22deg)}.welcome-art:before{content:"✦";position:absolute;left:5px;top:4px;color:#81a4f4;font-size:21px}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-bottom:26px}.stat{padding:20px;background:white;border:1px solid var(--line);border-radius:var(--radius);position:relative}.stat-top{display:flex;align-items:center;justify-content:space-between;color:#718099;font-size:13px}.stat-icon{width:34px;height:34px;background:#f0f4ff;border-radius:10px;display:grid;place-items:center;color:#5a80e0}.stat:nth-child(2) .stat-icon{color:#8b6fd1;background:#f4f0ff}.stat:nth-child(3) .stat-icon{color:#d09648;background:#fff7eb}.stat:nth-child(4) .stat-icon{color:#36a48e;background:#eaf8f3}.stat-value{font-size:31px;font-weight:650;margin:12px 0 8px;letter-spacing:-1px}.stat-value small{font-size:13px;color:#9ba4b4;font-weight:400;letter-spacing:0;margin-left:5px}.stat-note{font-size:11px;color:#97a2b4}.stat-note b{font-weight:500;color:#459b87;margin-right:6px}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:23px}.main-column,.side-column{display:grid;gap:23px;align-content:start}.panel{background:white;border:1px solid var(--line);border-radius:var(--radius);min-width:0;overflow:hidden}.panel-heading{padding:22px 23px 17px;display:flex;align-items:center;justify-content:space-between;gap:12px}.panel-heading h2{font-size:16px;font-weight:600;margin:0}.panel-heading h2 small{font-size:11px;font-weight:400;color:#94a0b4;margin-left:8px}.text-link{background:none;color:#8b98ad;font-size:12px;display:flex;align-items:center;gap:8px}.text-link:hover{color:var(--blue)}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 23px 15px;flex-wrap:wrap}.tabs{display:flex;gap:18px;align-items:center}.tab{font-size:12px;color:#8895aa;background:none;padding:9px 0;border-bottom:2px solid transparent}.tab.active{color:var(--blue);border-bottom-color:var(--blue);font-weight:600}.search{display:flex;align-items:center;gap:8px;background:#f7f9fc;border:1px solid var(--line);padding:9px 12px;border-radius:8px;color:#a0aabc;max-width:270px}.search input{width:100%;border:0;background:transparent;outline:none;font-size:12px;color:var(--ink);min-width:0}.search:focus-within{border-color:#91b0ff}.search .icon svg{width:15px;height:15px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:13px;text-align:left}th{font-weight:400;font-size:11px;color:#99a4b6;background:#fafbfd;padding:12px 20px;white-space:nowrap;border-top:1px solid #f1f4f9;border-bottom:1px solid #f1f4f9}td{padding:19px 20px;border-bottom:1px solid #f1f4f9;vertical-align:middle}tbody tr:last-child td{border:0}tbody tr:hover{background:#fcfdff}.assignment-name{display:flex;gap:12px;align-items:center;min-width:170px}.subject-icon{width:36px;height:39px;border-radius:8px;display:grid;place-items:center;background:#edf3ff;color:#5f88e9;flex-shrink:0}.subject-icon.purple{background:#f3efff;color:#9674d3}.subject-icon.green{background:#eaf6f2;color:#4da68d}.subject-icon.orange{background:#fff3e7;color:#cb985e}.assignment-name strong{display:block;font-size:13px;font-weight:550;color:#34445f;line-height:1.5}.assignment-name small{display:block;color:#9ba5b6;font-size:11px;margin-top:4px}.muted{color:#8b98ac}.badge{display:inline-block;border-radius:5px;padding:4px 7px;font-size:11px;white-space:nowrap;background:#eef3ff;color:#5e85df}.badge.orange{background:#fff5e5;color:#c09349}.badge.green{background:#eaf8f1;color:#52a37e}.badge.gray{background:#f0f3f8;color:#8c9aae}.badge.purple{background:#f3efff;color:#9170c9}.progress-number{font-size:12px;color:#586a87}.progress-number span{color:#a9b1bf}.progress-track{height:4px;background:#eff3fa;width:65px;border-radius:3px;margin-top:7px;overflow:hidden}.progress-track i{display:block;background:#81a3f7;height:100%;border-radius:3px}.row-action{color:var(--blue);background:none;font-size:12px;white-space:nowrap}.panel-foot{padding:13px 23px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:#9aa6b8;font-size:11px}.calendar{padding:0 20px 20px}.calendar-title{display:flex;justify-content:space-between;align-items:center;margin:4px 0 15px;font-size:13px}.calendar-controls{display:flex;gap:12px}.calendar-controls button{background:none;color:#94a0b2;font-size:18px}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);text-align:center;gap:6px 2px}.weekday{font-size:10px;color:#a4aec0;padding-bottom:7px}.calendar-day{font-size:11px;padding:7px 0;position:relative;border-radius:7px;color:#6e7d94}.calendar-day.outside{color:#cbd1dc}.calendar-day.today{background:var(--blue);color:white;box-shadow:0 3px 8px #2158ef33}.calendar-day.has-event:after{content:"";position:absolute;width:3px;height:3px;border-radius:50%;background:#6a92f5;bottom:2px;left:calc(50% - 1.5px)}.calendar-day.today:after{background:white}.schedule{border-top:1px solid var(--line);padding:18px 23px}.schedule-title{font-size:12px;color:#8c99af;margin-bottom:14px}.schedule-item{border-left:2px solid #739bfa;padding-left:12px;margin-bottom:15px}.schedule-item:last-child{margin-bottom:0;border-color:#b0a0e1}.schedule-item strong{display:block;font-size:12px;font-weight:500;line-height:1.7}.schedule-item small{font-size:11px;color:#9ba7b8}.log-list{padding:0 23px 6px}.log-item{display:flex;gap:12px;border-bottom:1px solid #f0f3f8;padding:17px 0}.log-item:last-child{border:0}.log-avatar{background:#ebf2fc;color:#6381ac;width:33px;height:33px;font-size:12px;border-radius:50%;display:grid;place-items:center;flex-shrink:0}.log-item:nth-child(2n) .log-avatar{background:#f2edf9;color:#a08bc0}.log-content{flex:1;min-width:0}.log-header{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px}.log-header strong{font-weight:550}.log-header span{font-size:11px;color:#a1acbd}.log-content p{font-size:12px;color:#75849c;line-height:1.9;margin:7px 0;overflow-wrap:anywhere}.tag{font-size:10px;padding:3px 6px;background:#f4f6fa;border-radius:4px;color:#8e9bb0;margin-right:6px}.duration{font-size:11px;color:#8ea0b7;margin-left:6px}.course-list{padding:0 22px 12px}.course-item{display:flex;align-items:center;gap:12px;padding:13px 0;border-bottom:1px solid #f2f4f8}.course-item:last-child{border:0}.course-item strong{display:block;font-size:12px;font-weight:500}.course-item small{display:block;margin-top:5px;font-size:11px;color:#95a1b3}.course-item .course-count{margin-left:auto;font-size:11px;color:#a2afc1}.footer{display:flex;justify-content:space-between;gap:18px;font-size:11px;color:#a1adbf;max-width:1570px;margin:auto;padding:18px 42px 25px}.footer>span:first-child{white-space:nowrap}.empty{padding:50px 24px;text-align:center;color:#8f9bb0;font-size:14px;line-height:2}.empty strong{display:block;color:#50627f;font-weight:500}.cards-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.course-card{padding:24px}.course-card h2{font-size:18px;margin:20px 0 8px}.course-card p{font-size:13px;color:#8c99ad;line-height:1.8}.course-meta{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:17px;margin-top:20px;font-size:12px;color:#7e8da4}.full-logs{max-width:900px}.full-logs .log-list{padding:8px 28px}.full-logs .log-content p{font-size:14px}.future-panel{padding:60px 24px;text-align:center;max-width:760px;margin:30px auto}.future-panel .ai-spark{font-size:58px}.future-panel h2{font-size:24px}.future-panel p{line-height:2;font-size:14px;color:#8796ad}.future-steps{display:flex;gap:15px;justify-content:center;margin:30px 0;font-size:13px;color:#7085a9}.future-steps span{border:1px solid var(--line);padding:12px;border-radius:8px;background:#f9fbff}.mobile-menu{display:none}.icon-button{width:34px;height:34px;border-radius:8px;background:transparent;color:#8491a7;font-size:21px}.icon-button:hover{background:#f1f4fa}dialog{border:1px solid var(--line);border-radius:18px;padding:0;width:min(590px,calc(100vw - 32px));max-height:90vh;color:var(--ink);box-shadow:0 25px 90px #182e6533}dialog::backdrop{background:#14213d66;backdrop-filter:blur(3px)}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:22px 26px;border-bottom:1px solid var(--line)}.modal-header h2{font-size:19px;margin:0}.modal-body{padding:23px 26px}.modal-footer{display:flex;justify-content:flex-end;gap:10px;padding:17px 26px;border-top:1px solid var(--line);background:#fafbfd}.field{display:block;margin-bottom:17px;font-size:13px;font-weight:500;color:#5b6d88}.field input,.field textarea,.field select{display:block;width:100%;padding:11px 12px;border:1px solid #dfe6f0;border-radius:8px;margin-top:8px;background:white;color:#354761;font-size:14px}.field textarea{resize:vertical;min-height:110px;line-height:1.8}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}.form-note{font-size:12px;color:#8b99ae;line-height:1.9;background:#f3f6fc;padding:12px;border-radius:8px}.detail-text{white-space:pre-wrap;font-size:14px;color:#6d7d95;line-height:1.9;margin:20px 0;overflow-wrap:anywhere}.detail-meta{display:flex;gap:12px;flex-wrap:wrap;font-size:12px;color:#8a99ae}.toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,20px);background:#233655;color:white;border-radius:10px;padding:13px 21px;font-size:14px;z-index:60;max-width:90vw;box-shadow:0 8px 30px #182e6533;opacity:0;pointer-events:none;transition:.2s}.toast.show{opacity:1;transform:translate(-50%,0)}.noscript{position:fixed;inset:0;background:white;padding:50px;z-index:200}.text-block{overflow-wrap:anywhere}.view-enter{animation:enter .22s ease}@keyframes enter{from{opacity:.4;transform:translateY(5px)}to{opacity:1;transform:none}}@media(min-width:1600px){.dashboard-grid{grid-template-columns:minmax(0,1fr) 320px}.stat{padding:24px}.panel-heading{padding-top:25px}td{padding-top:23px;padding-bottom:23px}}
@media(max-width:1250px){.sidebar{width:220px;padding-left:15px;padding-right:15px}.app-shell{margin-left:220px}.brand{font-size:21px}.topbar{padding:0 26px}main{padding:28px 26px}.dashboard-grid{grid-template-columns:minmax(0,1fr) 255px;gap:18px}.stats{gap:12px}.stat{padding:16px}.stat-top{font-size:12px}td,th{padding-left:14px;padding-right:14px}.footer{padding-left:26px;padding-right:26px}.top-actions{gap:12px}.date-chip{display:none}.cards-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.assignment-name{min-width:155px}}
@media(max-width:1050px){.dashboard-grid{grid-template-columns:minmax(0,1fr)}.side-column{grid-template-columns:1fr 1fr}.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.demo-badge{display:none}.stat-value{margin:4px 0 8px}.sidebar{width:205px}.app-shell{margin-left:205px}.workspace small{font-size:10px}.brand{font-size:20px;gap:8px}.brand small{font-size:10px}.profile{padding-left:10px}.breadcrumb{gap:9px}.breadcrumb>span:first-of-type{display:none}}
@media(max-width:720px){.sidebar{transform:translateX(-100%);width:240px;box-shadow:15px 0 40px #17243f20;transition:transform .2s}.sidebar.open{transform:translateX(0)}.app-shell{margin-left:0}.mobile-menu{display:block}.topbar{height:67px;padding:0 16px}.top-actions{gap:8px}.profile{padding-left:8px}.profile #profile-name,.chevron{display:none}.role-switch{font-size:12px}.breadcrumb{gap:8px}.slash{display:none}main{padding:25px 16px 16px}h1{font-size:23px}.page-heading{align-items:flex-start;margin-bottom:20px}.heading-actions .button{font-size:12px;padding:10px 12px}.eyebrow{font-size:10px}.page-heading p{font-size:12px;line-height:1.7}.welcome{padding:20px;margin-bottom:18px}.welcome h2{font-size:17px}.welcome p{font-size:12px}.welcome-art{width:85px;transform:scale(.8) rotate(-10deg)}.book{min-width:27px}.stats{gap:10px;margin-bottom:18px}.stat{padding:16px}.stat-top{font-size:12px}.stat-value{font-size:27px}.stat-note{font-size:10px}.dashboard-grid,.main-column,.side-column{gap:18px}.side-column{grid-template-columns:1fr}.panel-heading{padding:20px 18px 14px}.toolbar{padding-left:18px;padding-right:18px}.search{max-width:100%;flex:1;min-width:110px}.tabs{gap:14px}.panel-heading h2 small{display:none}.table-wrap table{min-width:575px}.footer{padding:16px;flex-direction:column;gap:7px;line-height:1.8}.cards-grid{grid-template-columns:1fr}.field-row{grid-template-columns:1fr;gap:0}.modal-body{padding:20px}.modal-header,.modal-footer{padding:18px 20px}.future-steps{flex-direction:column}.log-header{align-items:flex-start}.log-header span{font-size:10px}.heading-actions .secondary-mobile{display:none}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}