button{border:0;background:transparent;color:inherit}svg{display:inline-block;vertical-align:middle;flex-shrink:0}:root{--background:#f7f8fb;--foreground:#1c2c43;--card:#fff;--primary:#255bd8;--primary-foreground:#fff;--muted:#edf1f7;--muted-foreground:#64748b;--border:#e0e6ef;--input:#cbd5e1;--ring:#255bd8;--radius:.65rem;--popover:#fff;--popover-foreground:#1c2c43;--accent:#eaf0ff;--accent-foreground:#255bd8}*{box-sizing:border-box}body{margin:0;background:var(--background);color:var(--foreground);font-family:Inter,-apple-system,BlinkMacSystemFont,Microsoft YaHei,PingFang SC,sans-serif;font-size:15px;line-height:1.75}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}button,a{touch-action:manipulation}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #91b4ff;outline-offset:3px}input,textarea,select{border:1px solid #ccd6e5;border-radius:7px;background:#fff;color:#1c2c43;padding:10px 12px;max-width:100%}input:focus,textarea:focus,select:focus{outline:2px solid #a2beff;outline-offset:1px}h1,h2,h3,h4,p{margin:0}h1{font-size:36px;line-height:1.45;letter-spacing:-.04em;font-weight:750}h2{font-size:27px;line-height:1.5;letter-spacing:-.035em;font-weight:700}h3{font-size:20px;line-height:1.5;font-weight:650;margin-bottom:12px}h4{font-size:16px;font-weight:650;margin-bottom:8px}p{margin:8px 0}ul,ol{padding-left:22px;margin:10px 0}li{margin:7px 0}.muted{color:#65758c}.small{font-size:13px}.fineprint{font-size:12px;color:#708096;line-height:1.8;margin-top:15px}.eyebrow{font-size:11px;font-weight:700;letter-spacing:.12em;color:#5d7caa;display:inline-block;margin-bottom:10px}.top{height:80px;border-bottom:1px solid var(--border);background:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 32px;position:relative;z-index:10}.brand{display:flex;align-items:center;gap:12px;font-size:24px;font-weight:750;letter-spacing:-.05em}.brand-mark{width:37px;height:37px;display:grid;place-items:center;background:#255bd8;color:#fff;border-radius:10px;font-size:24px;font-weight:650}.brand small{display:inline-block;margin-left:14px;letter-spacing:.04em;font-size:13px;font-weight:500;color:#73839a}.account{display:flex;align-items:center;gap:15px;font-size:12px;color:#68798e}.account-role{display:flex;gap:5px;align-items:center;background:#f1f5fa;border:1px solid #e4eaf2;padding:5px 10px;border-radius:6px}.account-name{max-width:190px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.site-shell{max-width:1600px;margin:auto;display:grid;grid-template-columns:235px minmax(0,1fr);min-height:calc(100vh - 80px)}.sidebar{border-right:1px solid var(--border);padding:32px 18px 20px;background:#fcfdff;display:flex;flex-direction:column;gap:18px}.nav-label{font-size:11px;color:#8a98ac;letter-spacing:.1em;margin:0 14px 2px}.sidebar nav{display:flex;flex-direction:column;gap:6px}.nav-item{border:0;display:flex;align-items:center;gap:12px;width:100%;text-align:left;padding:12px 14px;border-radius:8px;color:#5e6e84;font-size:14px;background:transparent}.nav-item>svg:last-child{margin-left:auto;opacity:0}.nav-item.active{background:#eaf0ff;color:#255bd8;font-weight:650}.nav-item.active>svg:last-child{opacity:1}.nav-item:hover{background:#f0f4fb}.sidebar-note{margin:35px 12px;padding-top:22px;border-top:1px solid #e2e9f1}.sidebar-note p{font-size:15px;line-height:1.9;color:#536981}.sidebar-footer{font-size:11px;color:#93a0b2;margin:20px 12px 0}.main-content{padding:26px 40px 24px;min-width:0;max-width:1260px;width:100%}.breadcrumb{font-size:11px;color:#8190a3;display:flex;gap:10px;margin-bottom:23px}.breadcrumb span{color:#b4bdc9}.hero{display:flex;justify-content:space-between;align-items:center;gap:30px;padding:24px 0 32px;border-bottom:1px solid #dde5ef;margin-bottom:32px}.hero p{color:#6b7e97;margin-top:14px}.hero-metrics{display:flex;gap:28px}.hero-metrics div{display:flex;flex-direction:column;min-width:60px}.hero-metrics strong{font-size:30px;line-height:1.3;font-weight:600;letter-spacing:-.05em;color:#2d5a9f}.hero-metrics span{font-size:11px;color:#7a8ca3;margin-top:8px}.section-intro{max-width:850px;margin:8px 0 27px}.section-intro p{color:#677a92;font-size:14px;line-height:1.9;margin:12px 0}.section{margin-top:32px;padding-top:27px;border-top:1px solid var(--border)}.section-title{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:16px}.section-title h3{margin-bottom:0}.section-title p{font-size:13px;line-height:1.7}.count{font-size:12px;white-space:nowrap;color:#71829a}.task-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.task-item{background:#fff;border:1px solid var(--border);border-radius:10px;padding:20px}.step-number{font-size:12px;font-weight:700;color:#3b68b8;display:inline-flex;background:#edf3ff;padding:2px 8px;border-radius:4px;margin-bottom:12px}.task-item p{font-size:13px;line-height:1.9;color:#718097}.two-columns{display:grid;grid-template-columns:1fr 1fr;gap:30px}.three-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.three-columns p{font-size:13px;color:#6b7a90}.two-columns h3{display:flex;gap:8px;align-items:center}.definition-list{margin:0}.definition-list>div{padding:12px 0;border-bottom:1px solid #e4eaf3}.definition-list>div:last-child{border-bottom:0}.definition-list dt{font-size:13px;font-weight:650}.definition-list dd{font-size:13px;margin:4px 0 0;color:#718198}.folder-list{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:18px 0}.folder-list span{background:#eef2f8;border:1px solid #e0e6ef;font-size:12px;padding:8px 12px;border-radius:5px}.two-columns>div>p{font-size:13px;color:#667b93}.text-link{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:#255bd8;border:0;background:none;padding:0}.text-link:hover{text-decoration:underline}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:#255bd8;color:#fff;border:1px solid #255bd8;border-radius:7px;padding:10px 16px;font-size:13px;font-weight:600;line-height:1.5}.btn:hover{filter:brightness(.96)}.btn.secondary{background:#eef3fc;color:#2e5d9c;border-color:#dce6f7}.learning{display:grid;grid-template-columns:235px minmax(0,1fr);gap:20px}.week-rail{display:flex;flex-direction:column;gap:6px}.week{display:flex;gap:10px;align-items:center;text-align:left;padding:12px;border:1px solid var(--border);border-radius:7px;background:#fff;font-size:12px;color:#60728c}.week span{font-size:10px;font-weight:750;color:#8395ad}.week.active{border-color:#7599df;color:#255bd8;background:#edf3ff}.week.active span{color:#255bd8}.panel{padding:25px;border:1px solid var(--border);background:#fff;border-radius:10px;min-width:0}.lesson-summary>.muted{font-size:13px}.lesson-summary .two-columns{gap:22px;margin-top:23px}.lesson-summary li{font-size:13px;color:#61748d}.assignment{margin:23px 0;padding:18px 0;border-top:1px solid #e5eaf1;border-bottom:1px solid #e5eaf1}.assignment p{font-size:13px;color:#596f8b}.filterbar{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.chip{font-size:12px;padding:8px 13px;border:1px solid #dfe5ee;background:#fff;border-radius:7px;color:#6b7b90}.chip.selected{background:#255bd8;color:#fff;border-color:#255bd8}.chip span{margin-left:9px;opacity:.7}.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.download{display:flex;gap:14px;align-items:center;background:#fff;padding:18px;border:1px solid var(--border);border-radius:9px;transition:border-color .15s,box-shadow .15s}.download:hover{border-color:#7fa5e9;box-shadow:0 3px 15px #29415c08}.download>svg{color:#8495ac;flex-shrink:0}.download-copy{flex:1;min-width:0}.download strong{font-size:13px;font-weight:600;display:block}.download small{font-size:11px;color:#7b8ba1;display:block;margin-top:4px}.file-icon{font-size:9px;font-weight:750;color:#3a6cb9;display:grid;place-items:center;width:43px;height:51px;border-radius:5px;background:#edf3ff;flex-shrink:0}.file-icon.pdf{color:#b96a50;background:#fff0e8}.file-icon.pptx{color:#bd7848;background:#fff1e5}.report-column{padding:5px 0}.report-column li{font-size:14px;line-height:1.9;color:#5f7188}.report-column .muted{font-size:13px}.table-scroll{overflow:auto;border:1px solid var(--border);border-radius:8px;margin-top:18px}table{border-collapse:collapse;width:100%;font-size:13px;background:#fff;min-width:590px}th,td{text-align:left;padding:13px 17px;border-bottom:1px solid #e4eaf2;vertical-align:top}th{font-weight:600;background:#edf2f9;color:#536b8e}td{color:#697d95}tr:last-child td{border-bottom:0}.check-list{padding:0;list-style:none}.check-list li{display:flex;align-items:flex-start;gap:8px;color:#63768f;font-size:13px}.check-list svg{margin-top:4px;flex-shrink:0;color:#3d8c78}.field-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.field-tab{padding:17px;text-align:left;background:#fff;border:1px solid #dce4ee;border-radius:9px;display:grid;grid-template-columns:1fr auto;row-gap:6px}.field-tab>span{font-size:10px;color:#8b9bb0;grid-column:1/-1}.field-tab strong{font-size:13px;font-weight:600;color:#566c87}.field-tab small{font-size:10px;color:#8a99ad}.field-tab.active{background:#edf3ff;border-color:#7295d8}.field-tab.active strong{color:#2458aa}.catalog-header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:21px 0}.catalog-header p{font-size:12px}.search-input{font-size:12px;min-width:210px}.course-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.course-card{border:1px solid var(--border);border-radius:10px;background:#fff;padding:23px;display:flex;flex-direction:column;min-width:0}.course-card .section-title{margin-bottom:14px}.course-code{font-size:11px;font-weight:750;letter-spacing:.08em;color:#58759b}.course-card h3{font-size:17px;margin-bottom:8px}.course-card>p{font-size:13px;color:#7b8ba0;line-height:1.85;flex:1}.badge{font-size:10px;padding:3px 8px;background:#f2f4f8;color:#8896a9;border-radius:5px;white-space:nowrap;display:inline-flex;gap:5px;align-items:center}.badge.success{background:#eaf6ef;color:#3a7e60}.course-bottom{display:flex;gap:12px;justify-content:space-between;align-items:center;margin-top:22px;padding-top:15px;border-top:1px solid #eef1f5}.course-bottom>span{display:inline-flex;align-items:center;gap:5px;font-size:11px}.course-bottom .text-link{font-size:12px}.course-card.reserved{background:#f3f5f8;border-style:dashed}.back-button{display:flex;align-items:center;gap:8px;border:0;background:transparent;font-size:13px;color:#597397;padding:0;margin:20px 0}.detail-panel h3{font-size:22px}.preserve{white-space:pre-wrap;overflow-wrap:anywhere}.lesson-body{font-size:14px;line-height:2;margin:25px 0}.access-gate{padding:28px;margin-top:25px;border:1px dashed #cdd9ea;border-radius:9px;background:#f7f9fd}.access-gate>svg{color:#7394c5;margin-bottom:13px}.access-gate p{font-size:13px;color:#6b7e97}.request-form{max-width:550px}.review-note{border-left:2px solid #8ba7d1;padding-left:12px;margin:15px 0!important}.form label{display:block;font-size:13px;font-weight:600;margin:18px 0 7px}.form textarea,.form input:not([type=checkbox]){width:100%;display:block;margin-top:8px;font-weight:400;font-size:13px}.form input[type=file]{padding:12px;background:#f8fafc;border:1px dashed #c5d1e2}.form .checkbox-row{display:flex;align-items:center;gap:9px;font-weight:400;margin:18px 0}.checkbox-row input{accent-color:#255bd8;width:16px;height:16px}.upload-form{border-top:1px solid #e2e9f1;margin-top:24px;padding-top:7px}.approval-panel{background:#fff;border:1px solid var(--border);border-radius:9px;padding:19px 23px;margin:22px 0}.approval-panel>summary{display:flex;align-items:center;justify-content:space-between;cursor:pointer;font-size:14px;font-weight:600;list-style:none;gap:15px}.approval-panel>summary>span{display:flex;gap:8px;align-items:center}.approval-panel>summary:after{content:"\ff0b";color:#6480a9;font-size:17px}.approval-panel[open]>summary:after{content:"\2212"}.approval-panel>summary .badge{margin-left:auto}.approval-panel>p{font-size:13px}.request-row{padding:22px 0;border-bottom:1px solid #e2e8f1;font-size:13px}.review-form{display:flex;gap:12px;align-items:flex-end;margin:15px 0}.review-form label{display:flex;flex-direction:column;gap:5px;font-size:12px;flex:1}.review-form input,.review-form select{font-size:12px}.review-form label:nth-child(2){flex:0 0 130px}.attachment-row{display:flex;gap:11px;align-items:center;padding:13px 0;border-bottom:1px solid #e5ebf3;flex-wrap:wrap}.attachment-row .text-link{overflow-wrap:anywhere;max-width:90%}.attachment-row .quiet-button{margin-left:auto}.quiet-button{border:0;background:transparent;font-size:12px;padding:4px}.danger{color:#ae4848}.alert{font-size:13px;padding:13px 17px;border-radius:7px;margin:18px 0;display:flex;gap:14px;flex-wrap:wrap}.alert.error{background:#fff0ed;color:#a34838}.alert.success{background:#eaf6ee;color:#397451}.loading{font-size:13px;color:#7289a6;padding:15px 0}.empty-state{border:1px dashed #d3dce9;background:#f3f6fb;border-radius:10px;text-align:center;padding:50px 22px;color:#7e90a7}.empty-state svg{margin:0 auto 15px;color:#91a7c6}.empty-state h4{font-size:16px;color:#607692}.empty-state p{font-size:13px}.empty-inline{font-size:13px;color:#7d8ea4;padding:15px 0}.filename{overflow-wrap:anywhere}.page-footer{border-top:1px solid var(--border);margin-top:48px;padding-top:20px;display:flex;justify-content:space-between;gap:15px;color:#9aa6b5;font-size:10px;letter-spacing:.02em}@media(min-width:1500px){.main-content{padding-left:55px;padding-right:55px}}@media(max-width:1150px){.site-shell{grid-template-columns:205px minmax(0,1fr)}.sidebar{padding-left:12px;padding-right:12px}.main-content{padding:25px}.hero-metrics{gap:16px}.hero-metrics strong{font-size:25px}.task-grid{grid-template-columns:repeat(2,1fr)}.learning{grid-template-columns:190px minmax(0,1fr)}.lesson-summary .two-columns{grid-template-columns:1fr;gap:8px}.field-tab{grid-template-columns:1fr}.field-tab>span{grid-column:auto}}@media(max-width:850px){.site-shell{grid-template-columns:1fr}.sidebar{border:0;padding:12px 20px;position:sticky;top:0;z-index:20;border-bottom:1px solid var(--border)}.nav-label,.sidebar-note,.sidebar-footer{display:none}.sidebar nav{flex-direction:row;overflow:auto;gap:6px;scrollbar-width:thin}.nav-item{width:auto;white-space:nowrap;font-size:12px;padding:9px 12px;gap:6px}.nav-item>svg:last-child{display:none}.nav-item>svg{width:15px}.main-content{max-width:100%;padding:24px}.top{padding:0 24px;height:70px}.brand small{font-size:11px}.account-name{display:none}.two-columns{gap:22px}.hero{padding-top:8px}.hero h1{font-size:31px}.hero-metrics{gap:16px}.learning{grid-template-columns:1fr}.week-rail{display:grid;grid-template-columns:repeat(3,1fr)}.lesson-summary .two-columns{grid-template-columns:1fr 1fr}.field-tab{padding:13px}.field-tab strong{font-size:12px}.catalog-header{align-items:flex-start;flex-direction:column;gap:8px}.search-input{width:100%}}@media(max-width:580px){.brand small{display:none}.top{padding:0 18px;height:66px}.account-role{font-size:10px}.main-content{padding:22px 18px}.sidebar{padding:10px 12px}.nav-item{font-size:11px;padding:8px 10px}.hero{display:block}.hero h1{font-size:29px}.hero-metrics{margin-top:24px;gap:33px}.hero-metrics strong{font-size:25px}.hero-metrics span{font-size:10px}.hero p{font-size:12px}h2{font-size:23px}h3{font-size:18px}.task-grid,.two-columns,.three-columns,.download-grid,.course-grid{grid-template-columns:1fr}.task-item{padding:18px;display:grid;grid-template-columns:30px 1fr;gap:0 12px}.task-item .step-number{grid-row:1/3;align-self:start;padding:3px 4px;justify-content:center}.task-item h4{margin-bottom:0}.task-item p{grid-column:2;margin-bottom:0}.week-rail{grid-template-columns:repeat(2,1fr)}.lesson-summary .two-columns{grid-template-columns:1fr}.panel{padding:20px}.field-tabs{grid-template-columns:1fr;gap:8px}.field-tab{grid-template-columns:24px 1fr auto;align-items:center;gap:8px}.field-tab>span{margin:0}.field-tab strong{font-size:13px}.field-tab small{font-size:10px}.course-card{padding:21px}.section-title{align-items:flex-start}.section-title>.small{display:none}.review-form{flex-wrap:wrap}.review-form label{flex-basis:100%}.review-form label:nth-child(2){flex:1}.approval-panel{padding:17px}.access-gate{padding:20px}.page-footer{font-size:9px}.case-filters .chip{font-size:11px;padding:7px 9px}}.auth-card{max-width:480px;margin:9vh auto;padding:36px;background:#fff;border:1px solid var(--border);border-radius:16px}.auth-card .form{margin-top:22px}.form label{display:flex;flex-direction:column;gap:5px}.account-page{max-width:1000px;margin:40px auto;padding:20px}.account-page>.panel{max-width:580px}.account-list{display:grid;gap:16px;margin-top:24px}.account-page .form{gap:14px}.checkbox-row{flex-direction:row!important}.account-page summary{cursor:pointer;color:var(--primary)}@media(max-width:600px){.auth-card{margin:24px 16px;padding:24px}.account{gap:8px;font-size:12px}.account-role{display:none}.account-page>.section-title{flex-wrap:wrap}.account-page h1{font-size:26px}}