html,body{width:100%;height:100%}input::-ms-clear,input::-ms-reveal{display:none}*,*:before,*:after{box-sizing:border-box}html{font-family:sans-serif;line-height:1.15;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%;-ms-overflow-style:scrollbar;-webkit-tap-highlight-color:rgba(0,0,0,0)}@-ms-viewport{width:device-width}body{margin:0}[tabindex="-1"]:focus{outline:none}hr{box-sizing:content-box;height:0;overflow:visible}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5em;font-weight:500}p{margin-top:0;margin-bottom:1em}abbr[title],abbr[data-original-title]{-webkit-text-decoration:underline dotted;text-decoration:underline;text-decoration:underline dotted;border-bottom:0;cursor:help}address{margin-bottom:1em;font-style:normal;line-height:inherit}input[type=text],input[type=password],input[type=number],textarea{-webkit-appearance:none}ol,ul,dl{margin-top:0;margin-bottom:1em}ol ol,ul ul,ol ul,ul ol{margin-bottom:0}dt{font-weight:500}dd{margin-bottom:.5em;margin-left:0}blockquote{margin:0 0 1em}dfn{font-style:italic}b,strong{font-weight:bolder}small{font-size:80%}sub,sup{position:relative;font-size:75%;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}pre,code,kbd,samp{font-size:1em;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace}pre{margin-top:0;margin-bottom:1em;overflow:auto}figure{margin:0 0 1em}img{vertical-align:middle;border-style:none}a,area,button,[role=button],input:not([type=range]),label,select,summary,textarea{touch-action:manipulation}table{border-collapse:collapse}caption{padding-top:.75em;padding-bottom:.3em;text-align:left;caption-side:bottom}input,button,select,optgroup,textarea{margin:0;color:inherit;font-size:inherit;font-family:inherit;line-height:inherit}button,input{overflow:visible}button,select{text-transform:none}button,html [type=button],[type=reset],[type=submit]{-webkit-appearance:button}button::-moz-focus-inner,[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner{padding:0;border-style:none}input[type=radio],input[type=checkbox]{box-sizing:border-box;padding:0}input[type=date],input[type=time],input[type=datetime-local],input[type=month]{-webkit-appearance:listbox}textarea{overflow:auto;resize:vertical}fieldset{min-width:0;margin:0;padding:0;border:0}legend{display:block;width:100%;max-width:100%;margin-bottom:.5em;padding:0;color:inherit;font-size:1.5em;line-height:inherit;white-space:normal}progress{vertical-align:baseline}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:none}[type=search]::-webkit-search-cancel-button,[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}summary{display:list-item}template{display:none}[hidden]{display:none!important}mark{padding:.2em;background-color:#feffe6}.admin-search{width:300px}.admin-select{width:160px}.admin-grid{display:grid;grid-template-columns:minmax(320px,.9fr) minmax(0,1.1fr);gap:18px}.admin-role-section{grid-template-columns:minmax(620px,1fr) minmax(280px,360px);align-items:start}.admin-panel-pad{padding:18px}.admin-role-list-panel{min-width:0;overflow:auto}.admin-role-list-panel .ant-table-wrapper{width:100%;max-width:none;margin:0}.admin-permission-panel{max-height:560px;min-width:0}.admin-permission-tree{max-height:460px;overflow:auto}.admin-panel-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.admin-panel-title strong{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.admin-runtime-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.admin-runtime-card{display:grid;gap:8px;min-height:132px;padding:22px}.admin-runtime-card span{color:var(--muted);font-size:13px}.admin-runtime-card strong{font-size:30px;font-weight:600}.admin-runtime-card small{color:var(--muted)}.selected{background:var(--surface-soft)}.admin-stack{max-height:380px;margin-top:18px;overflow:auto;padding:14px;white-space:pre-wrap;background:var(--surface-soft);border:1px solid var(--hairline);border-radius:8px}.admin-file-manager{display:grid;width:100%;gap:12px}.admin-file-manager .ant-table-wrapper,.admin-file-table{width:100%;max-width:100%;margin:0}.admin-file-nav{display:flex;align-items:center;width:100%;gap:16px;padding:10px 14px}.admin-file-name{display:inline-flex;align-items:center;gap:8px;padding:0;color:var(--primary);background:transparent;border:0;cursor:pointer}.admin-file-name.plain{color:var(--body);cursor:default}@media(max-width:1100px){.admin-role-section{grid-template-columns:1fr}.admin-permission-panel{max-height:none}.admin-permission-tree{max-height:360px}}@media(max-width:900px){.admin-grid,.admin-runtime-grid{grid-template-columns:1fr}.admin-search,.admin-select{width:100%}.admin-file-nav{align-items:flex-start;flex-direction:column}}.course-workbench,.course-overview,.course-detail,.summary-grid,.detail-tabs,.catalog-list,.catalog-group{min-width:0;width:100%;max-width:100%;box-sizing:border-box}.catalog-group .ant-table-wrapper{max-width:100%}.courseware-toolbar{justify-content:flex-start}.courseware-type-filter{width:140px}.courseware-search{width:320px;margin-left:auto}.courseware-name-cell{display:flex;align-items:center;gap:12px}.courseware-name-cell strong,.courseware-name-cell small{display:block}.courseware-name-cell small{max-width:250px;margin-top:4px;overflow:hidden;color:var(--muted);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.courseware-type-icon{display:grid;flex:0 0 40px;place-items:center;width:40px;height:40px;color:var(--primary);font-size:18px;background:var(--surface-strong);border-radius:8px}.courseware-section-title{margin:22px 0 12px;font-size:16px;font-weight:600}.courseware-info-bar{display:flex;align-items:center;gap:12px;padding:12px 0;flex-wrap:wrap}.courseware-info-text{color:var(--muted);font-size:13px}.courseware-info-desc{width:100%;color:var(--muted);font-size:13px;margin-top:4px}.attachment-section-header{display:flex;align-items:center;justify-content:space-between;margin-top:16px}.attachment-section-header .courseware-section-title{margin:0}.attachment-card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;margin-top:12px}.attachment-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--hairline);border-radius:8px;overflow:hidden;transition:box-shadow .2s}.attachment-card:hover{box-shadow:0 2px 8px #00000014}.attachment-preview{display:grid;place-items:center;width:100%;height:120px;background:var(--surface-soft);cursor:pointer;overflow:hidden}.attachment-thumbnail{width:100%;height:100%;object-fit:cover}.attachment-icon-wrapper{display:grid;place-items:center;width:100%;height:100%}.attachment-icon{font-size:40px}.attachment-icon.pdf{color:#e74c3c}.attachment-icon.word{color:#2980b9}.attachment-icon.excel{color:#27ae60}.attachment-icon.txt{color:#7f8c8d}.attachment-icon.zip{color:#e67e22}.attachment-icon.generic{color:#95a5a6}.attachment-card-body{padding:10px;flex:1;min-width:0}.attachment-name{font-size:13px;font-weight:500;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attachment-meta{display:flex;align-items:center;gap:8px;margin-top:6px;font-size:11px;color:var(--muted)}.attachment-type-tag{padding:1px 5px;background:var(--surface-strong);border-radius:3px;font-weight:500;font-size:10px;text-transform:uppercase}.attachment-time{margin-left:auto}.attachment-card-actions{display:flex;align-items:center;justify-content:flex-end;gap:2px;padding:0 4px 6px}.attachment-card-actions .ant-btn-sm{font-size:14px}.sticky-action{display:flex;align-items:center;gap:4px}@media(max-width:760px){.courseware-search,.courseware-type-filter{width:100%}.courseware-search{margin-left:0}.attachment-card-grid{grid-template-columns:1fr}}:root{color:var(--ink);background:var(--canvas);font-family:SF Pro Text,Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-synthesis:none;color-scheme:light;--primary: #0066cc;--primary-focus: #0071e3;--primary-on-dark: #2997ff;--canvas: #f5f5f7;--surface: #ffffff;--surface-soft: #fafafc;--surface-strong: #f0f0f2;--ink: #1d1d1f;--body: #333336;--muted: #7a7a80;--hairline: rgba(0, 0, 0, .08);--control-border: rgba(0, 0, 0, .12);--nav-surface: rgba(255, 255, 255, .78);--nav-active: #1d1d1f;--nav-active-ink: #ffffff;--dark-tile: #272729;--dark-tile-2: #2a2a2c;--on-dark: #ffffff;--on-dark-muted: #cccccc;--success: #52c41a;--warning: #faad14;--danger: #ff4d4f;--info: #1677ff;--success-bg: #f6ffed;--warning-bg: #fffbe6;--danger-bg: #fff2f0;--info-bg: #f0f5ff;--success-border: #b7eb8f;--warning-border: #ffe58f;--danger-border: #ffccc7;--info-border: #91caff;--success-deep: #389e0d;--warning-deep: #d46b08;--danger-deep: #cf1322;--info-deep: #0958d9;--text-muted: #999;--text-tertiary: #8c8c8c;--text-secondary: #595959;--border-light: #f0f0f0;--border-base: #d9d9d9;--bg-hover: #fafafa;--bg-disabled: #f5f5f5;--bg-elevated: #f9f9f9;--card-radius: 18px;--control-radius: 999px;--compact-radius: 12px;--title-weight: 600;--title-tracking: -.035em;--content-max: 1320px;--content-padding: 32px 36px 64px;--topbar-height: 52px;--topbar-surface: color-mix(in srgb, var(--canvas) 82%, transparent);--nav-blur: saturate(180%) blur(20px);--brand-height: 68px;--brand-mark: var(--ink);--brand-mark-ink: #ffffff;--brand-radius: 10px;--menu-height: 42px;--menu-radius: 10px}*{box-sizing:border-box}html{background:var(--canvas)}body{margin:0;min-width:320px;min-height:100vh;color:var(--ink);background:var(--canvas)}button,input,textarea,select{font:inherit}button{-webkit-tap-highlight-color:transparent}button:active,.ant-btn:active{transform:scale(.95)}#app,.app-shell{min-height:100vh;background:var(--canvas)}.main-layout,.content-wrap{background:var(--canvas)}.content-wrap{min-height:calc(100vh - var(--topbar-height));padding:var(--content-padding);overflow:auto}.page-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:var(--content-max);margin:0 auto 18px}.page-heading h1{margin-bottom:6px;color:var(--ink);font-family:var(--display-font, "SF Pro Display", inherit);font-size:clamp(24px,2.2vw,30px);font-weight:var(--title-weight);line-height:1.08;letter-spacing:var(--title-tracking)}.page-heading p{margin:0;color:var(--muted);font-size:17px;line-height:1.47;letter-spacing:-.012em}.content-section{max-width:var(--content-max);margin:0 auto 48px}.section-header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.section-title{margin:0;color:var(--ink);font-family:var(--display-font, "SF Pro Display", inherit);font-size:26px;font-weight:var(--title-weight);line-height:1.15;letter-spacing:var(--title-tracking)}.section-note,.muted{color:var(--muted);font-size:14px}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:var(--content-max);margin:0 auto 20px;padding:16px 18px;background:var(--surface);border:1px solid var(--hairline);border-radius:var(--card-radius)}.surface-panel{overflow:hidden;background:var(--surface);border:1px solid var(--hairline);border-radius:var(--card-radius)}.ant-btn{box-shadow:none!important;transition:transform .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease}.ant-btn-primary{background:var(--primary);border-color:var(--primary)}.ant-btn-primary:not(:disabled):hover{background:var(--primary-focus);border-color:var(--primary-focus)}.ant-btn-round,.ant-btn-primary{border-radius:var(--control-radius)}.ant-btn-link{color:var(--primary)}.ant-btn-default{color:var(--ink);background:var(--surface);border-color:var(--control-border)}.ant-btn-default:not(:disabled):hover{color:var(--primary);background:var(--surface-soft);border-color:var(--primary)}.ant-input,.ant-input-affix-wrapper,.ant-select-selector,.ant-input-number,textarea.ant-input{color:var(--ink)!important;background:var(--surface)!important;border-color:var(--control-border)!important;border-radius:var(--control-radius)!important;box-shadow:none!important}textarea.ant-input{border-radius:var(--compact-radius)!important}.ant-input:focus,.ant-input-affix-wrapper-focused,.ant-select-focused .ant-select-selector{border-color:var(--primary-focus)!important;box-shadow:0 0 0 3px #0071e329!important}.ant-input-search .ant-input-group{display:flex!important;align-items:stretch}.ant-input-search .ant-input-group .ant-input-affix-wrapper,.ant-input-search .ant-input-group .ant-input{border-right:0!important;border-radius:var(--control-radius) 0 0 var(--control-radius)!important}.ant-input-search .ant-input-group .ant-input{padding:0 5px}.ant-input-search .ant-input-group-addon{width:46px!important;padding:0!important;background:transparent!important;border:0!important}.ant-input-search .ant-input-search-button{width:46px!important;color:var(--muted)!important;background:var(--surface)!important;border-color:var(--control-border)!important;border-left:1px solid var(--control-border)!important;border-radius:0 var(--control-radius) var(--control-radius) 0!important}.ant-input-search .ant-input-search-button:hover{color:var(--primary)!important;background:var(--surface-soft)!important;border-color:var(--primary)!important}.ant-input-search .ant-input-affix-wrapper-focused+.ant-input-group-addon .ant-input-search-button,.ant-input-search .ant-input:focus+.ant-input-group-addon .ant-input-search-button{border-color:var(--primary-focus)!important}.ant-form-item-label>label,.ant-checkbox-wrapper,.ant-radio-wrapper{color:var(--body)}.ant-table-wrapper{width:100%;max-width:var(--content-max);margin:0 auto}.ant-table{color:var(--ink);background:transparent!important}.ant-table-container{overflow:hidden;background:var(--surface);border:1px solid var(--hairline);border-radius:var(--card-radius)}.ant-table-content,.ant-table-body{overflow-x:auto!important;scrollbar-width:thin}.ant-table-thead>tr>th{color:var(--muted)!important;font-size:12px;font-weight:600!important;background:var(--surface-soft)!important;border-bottom-color:var(--hairline)!important}.ant-table-tbody>tr>td{color:var(--body);background:var(--surface)!important;border-bottom-color:var(--hairline)!important}.ant-table-tbody>tr.ant-table-row:hover>td{background:var(--surface-soft)!important}.app-data-table .ant-table{min-width:100%}.app-data-table .ant-table-cell{padding:14px 16px!important}.app-data-table .ant-table-small .ant-table-cell{padding:10px 12px!important}.app-data-table .ant-table-tbody>tr:last-child>td{border-bottom:0!important}.app-data-table .ant-table-placeholder .ant-table-cell{white-space:normal}.ant-pagination{margin-right:8px!important}.ant-pagination-item,.ant-pagination-prev button,.ant-pagination-next button{background:var(--surface)!important;border-color:var(--control-border)!important}.ant-tag{border-radius:var(--control-radius)}.ant-progress-inner{background:var(--surface-strong)!important}.ant-drawer-content,.ant-modal-content{color:var(--ink);background:var(--surface)!important;border-radius:var(--card-radius)!important}.ant-drawer-header,.ant-modal-header{background:var(--surface)!important;border-bottom-color:var(--hairline)!important}.ant-drawer-title,.ant-modal-title,.ant-descriptions-item-label,.ant-descriptions-item-content{color:var(--ink)!important}.ant-list-item{border-block-end-color:var(--hairline)!important}.ant-dropdown-menu,.ant-select-dropdown{padding:6px!important;background:var(--surface)!important;border:1px solid var(--hairline);border-radius:var(--compact-radius)!important;box-shadow:none!important}.ant-dropdown-menu-item,.ant-select-item{color:var(--body)!important;border-radius:calc(var(--compact-radius) - 4px)!important}.ant-dropdown-menu-item:hover,.ant-select-item-option-active:not(.ant-select-item-option-disabled){background:var(--surface-strong)!important}.ant-tabs-nav:before{border-bottom-color:var(--hairline)!important}.theme-linear{color-scheme:dark;--primary: #8a8cf5;--primary-focus: #a1a3ff;--primary-on-dark: #a1a3ff;--canvas: #0f1014;--surface: #17181d;--surface-soft: #1b1c22;--surface-strong: #23242b;--ink: #f1f1f3;--body: #c8c8cf;--muted: #85858f;--hairline: rgba(255, 255, 255, .075);--control-border: rgba(255, 255, 255, .11);--nav-surface: #121318;--nav-active: #282936;--nav-active-ink: #ffffff;--dark-tile: #15161b;--dark-tile-2: #1b1c22;--success: #4cb782;--warning: #d2994a;--danger: #ff7875;--info: #8a8cf5;--success-bg: rgba(76, 183, 130, .12);--warning-bg: rgba(210, 153, 74, .12);--danger-bg: rgba(255, 120, 117, .12);--info-bg: rgba(138, 140, 245, .12);--success-border: rgba(76, 183, 130, .3);--warning-border: rgba(210, 153, 74, .3);--danger-border: rgba(255, 120, 117, .3);--info-border: rgba(138, 140, 245, .3);--success-deep: #4cb782;--warning-deep: #d2994a;--danger-deep: #ff7875;--info-deep: #8a8cf5;--text-muted: #6a6a72;--text-tertiary: #85858f;--text-secondary: #a0a0a8;--border-light: rgba(255, 255, 255, .08);--border-base: rgba(255, 255, 255, .11);--bg-hover: rgba(255, 255, 255, .04);--bg-disabled: rgba(255, 255, 255, .06);--bg-elevated: rgba(255, 255, 255, .04);--card-radius: 8px;--control-radius: 6px;--compact-radius: 6px;--title-weight: 600;--title-tracking: -.02em;--content-max: 1400px;--content-padding: 32px 36px 64px;--topbar-height: 48px;--topbar-surface: rgba(15, 16, 20, .92);--nav-blur: none;--brand-height: 58px;--brand-mark: #8a8cf5;--brand-mark-ink: #ffffff;--brand-radius: 6px;--menu-height: 36px;--menu-radius: 6px;--display-font: "Inter", system-ui, sans-serif}.theme-linear .content-wrap,.theme-linear .content-wrap h1,.theme-linear .content-wrap h2,.theme-linear .content-wrap h3,.theme-linear .content-wrap h4,.theme-linear .content-wrap strong{color:var(--ink)}.theme-linear .content-wrap p{color:var(--muted)}.theme-linear .ant-tag:not(.ant-tag-has-color){color:var(--body);background:var(--surface-soft);border-color:var(--control-border)}.theme-linear .ant-btn-text{color:var(--body)}.theme-linear .ant-btn-text:not(:disabled):hover{color:var(--ink);background:var(--surface-strong)}.theme-linear .ant-empty-description,.theme-linear .ant-pagination-item a,.theme-linear .ant-pagination-item-link{color:var(--muted)}.theme-linear .ant-modal-mask,.theme-linear .ant-drawer-mask{background:#000000ad}.theme-linear .ant-modal-close,.theme-linear .ant-drawer-close{color:var(--muted)}.theme-linear .ant-descriptions-bordered .ant-descriptions-view,.theme-linear .ant-descriptions-bordered .ant-descriptions-row,.theme-linear .ant-descriptions-bordered .ant-descriptions-item-label,.theme-linear .ant-descriptions-bordered .ant-descriptions-item-content{border-color:var(--hairline)!important}.theme-linear .ant-descriptions-bordered .ant-descriptions-item-label{background:var(--surface-soft)!important}.theme-linear .page-heading{margin-bottom:28px}.theme-linear .page-heading h1{font-size:clamp(32px,3vw,40px)}.theme-linear .metric-strip{gap:12px;margin-bottom:32px}.theme-linear .metric-strip div,.theme-linear .home-grid .content-section,.theme-linear .dashboard-grid .content-section,.theme-linear .quick-panel,.theme-linear .recommendation,.theme-linear .week-timeline,.theme-linear .detail-main,.theme-linear .detail-side,.theme-linear .upload-zone,.theme-linear .preview,.theme-linear .canvas-area,.theme-linear .review-panel,.theme-linear .attachment-card,.theme-linear .detail-hero{border-radius:8px!important}.theme-linear .metric-strip div{min-height:126px;padding:20px}.theme-linear .metric-strip strong{font-size:34px}@media(max-width:833px){.content-wrap{padding:40px 20px 64px}.page-heading{align-items:flex-start;margin-bottom:32px}.page-heading h1{font-size:34px}.toolbar,.section-header{align-items:stretch;flex-direction:column}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}