.admin-impersonation-banner[data-v-e17e1436]{background:linear-gradient(90deg,#f59e0b,#f97316);color:#fff;padding:10px 20px;box-shadow:0 2px 8px #00000014}.banner-content[data-v-e17e1436]{display:flex;align-items:center;justify-content:space-between;gap:16px}.banner-actions[data-v-e17e1436]{display:flex;gap:8px}.divider[data-v-e17e1436]{margin:0 8px;opacity:.75}@media (max-width: 768px){.banner-content[data-v-e17e1436]{flex-direction:column;align-items:flex-start}.banner-actions[data-v-e17e1436]{width:100%}}.app-header[data-v-3c41beb3]{background:linear-gradient(90deg,#1e3a8a,#3b82f6);box-shadow:0 2px 8px #0000001a;padding:0 24px}.header-content[data-v-3c41beb3]{height:100%;width:100%}.header-left[data-v-3c41beb3]{display:flex;align-items:center}.brand[data-v-3c41beb3]{display:flex;align-items:center;gap:12px}.brand-title[data-v-3c41beb3]{margin:0;color:#fff;font-size:20px;font-weight:600}.role-badge[data-v-3c41beb3]{padding:4px 12px;border-radius:12px;font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:.5px}.role-badge.teacher[data-v-3c41beb3]{background-color:#f59e0b;color:#fff}.role-badge.admin[data-v-3c41beb3]{background-color:#7c3aed;color:#fff}.role-badge.student[data-v-3c41beb3]{background-color:#10b981;color:#fff}.header-right[data-v-3c41beb3]{display:flex;justify-content:flex-end;align-items:center}.user-section[data-v-3c41beb3]{display:flex;align-items:center}.user-info[data-v-3c41beb3]{display:flex;align-items:center;gap:12px;padding:8px 16px;border-radius:8px;cursor:pointer;transition:background-color .2s}.user-info.teacher[data-v-3c41beb3]{background-color:#ffffff1a}.user-info.teacher[data-v-3c41beb3]:hover{background-color:#fff3}.user-info.student[data-v-3c41beb3]{background-color:#ffffff1a}.user-info.student[data-v-3c41beb3]:hover{background-color:#fff3}.user-avatar[data-v-3c41beb3]{background-color:#3b82f6;color:#fff;font-weight:600}.username[data-v-3c41beb3]{color:#fff;font-weight:500;font-size:14px}.dropdown-icon[data-v-3c41beb3]{color:#fff;font-size:14px}.logout-btn[data-v-3c41beb3]{height:28px;padding:0 12px}@media (max-width: 768px){.brand-title[data-v-3c41beb3]{font-size:16px}.username[data-v-3c41beb3]{display:none}.user-info[data-v-3c41beb3]{padding:8px}}.app-breadcrumb[data-v-0ae493e2]{padding:12px 24px;background-color:#f8fafc;border-bottom:1px solid #e2e8f0;min-height:40px;display:flex;align-items:center}[data-v-0ae493e2] .el-breadcrumb__item{height:auto;line-height:1.5}[data-v-0ae493e2] .el-breadcrumb__inner{color:#64748b;font-weight:500;transition:color .2s}[data-v-0ae493e2] .el-breadcrumb__inner:hover{color:#3b82f6}.is-clickable[data-v-0ae493e2] .el-breadcrumb__inner{cursor:pointer}[data-v-0ae493e2] .el-breadcrumb__item:last-child .el-breadcrumb__inner{color:#1e293b;font-weight:600}@media (max-width: 768px){.app-breadcrumb[data-v-0ae493e2]{display:none}}.app-layout[data-v-6b707c08]{min-height:100vh;display:flex;flex-direction:column;background:linear-gradient(135deg,#f8fbff,#f1f5f9)}.main-content[data-v-6b707c08]{flex:1;padding:20px;width:100%;margin:0 auto;box-sizing:border-box}@media (max-width: 768px){.main-content[data-v-6b707c08]{padding:12px}}.app-container[data-v-809d3c79]{min-height:100vh;background:linear-gradient(135deg,#f8fbff,#f1f5f9)}*,:before,:after{--tw-border-spacing-x: 0;--tw-border-spacing-y: 0;--tw-translate-x: 0;--tw-translate-y: 0;--tw-rotate: 0;--tw-skew-x: 0;--tw-skew-y: 0;--tw-scale-x: 1;--tw-scale-y: 1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness: proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width: 0px;--tw-ring-offset-color: #fff;--tw-ring-color: rgb(59 130 246 / .5);--tw-ring-offset-shadow: 0 0 #0000;--tw-ring-shadow: 0 0 #0000;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }::backdrop{--tw-border-spacing-x: 0;--tw-border-spacing-y: 0;--tw-translate-x: 0;--tw-translate-y: 0;--tw-rotate: 0;--tw-skew-x: 0;--tw-skew-y: 0;--tw-scale-x: 1;--tw-scale-y: 1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness: proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width: 0px;--tw-ring-offset-color: #fff;--tw-ring-color: rgb(59 130 246 / .5);--tw-ring-offset-shadow: 0 0 #0000;--tw-ring-shadow: 0 0 #0000;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }*,:before,:after{box-sizing:border-box;border-width:0;border-style:solid;border-color:#e5e7eb}:before,:after{--tw-content: ""}html,:host{line-height:1.5;-webkit-text-size-adjust:100%;-moz-tab-size:4;-o-tab-size:4;tab-size:4;font-family:Inter,system-ui,sans-serif;font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent}body{margin:0;line-height:inherit}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:Fira Code,JetBrains Mono,monospace;font-feature-settings:normal;font-variation-settings:normal;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}button,input,optgroup,select,textarea{font-family:inherit;font-feature-settings:inherit;font-variation-settings:inherit;font-size:100%;font-weight:inherit;line-height:inherit;letter-spacing:inherit;color:inherit;margin:0;padding:0}button,select{text-transform:none}button,input:where([type=button]),input:where([type=reset]),input:where([type=submit]){-webkit-appearance:button;background-color:transparent;background-image:none}:-moz-focusring{outline:auto}:-moz-ui-invalid{box-shadow:none}progress{vertical-align:baseline}::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}summary{display:list-item}blockquote,dl,dd,h1,h2,h3,h4,h5,h6,hr,figure,p,pre{margin:0}fieldset{margin:0;padding:0}legend{padding:0}ol,ul,menu{list-style:none;margin:0;padding:0}dialog{padding:0}textarea{resize:vertical}input::-moz-placeholder,textarea::-moz-placeholder{opacity:1;color:#9ca3af}input::placeholder,textarea::placeholder{opacity:1;color:#9ca3af}button,[role=button]{cursor:pointer}:disabled{cursor:default}img,svg,video,canvas,audio,iframe,embed,object{display:block;vertical-align:middle}img,video{max-width:100%;height:auto}[hidden]:where(:not([hidden=until-found])){display:none}.\!container{width:100%!important}.container{width:100%}@media (min-width: 640px){.\!container{max-width:640px!important}.container{max-width:640px}}@media (min-width: 768px){.\!container{max-width:768px!important}.container{max-width:768px}}@media (min-width: 1024px){.\!container{max-width:1024px!important}.container{max-width:1024px}}@media (min-width: 1280px){.\!container{max-width:1280px!important}.container{max-width:1280px}}@media (min-width: 1536px){.\!container{max-width:1536px!important}.container{max-width:1536px}}.status-indicator{display:inline-flex;align-items:center;border-radius:9999px;padding:.125rem .625rem;font-size:.75rem;line-height:1rem;font-weight:500}.status-error{--tw-bg-opacity: 1;background-color:rgb(254 226 226 / var(--tw-bg-opacity, 1));--tw-text-opacity: 1;color:rgb(153 27 27 / var(--tw-text-opacity, 1))}.code-block{overflow-x:auto;border-radius:.5rem;--tw-bg-opacity: 1;background-color:rgb(17 24 39 / var(--tw-bg-opacity, 1));padding:1rem;--tw-text-opacity: 1;color:rgb(243 244 246 / var(--tw-text-opacity, 1));font-family:Fira Code,JetBrains Mono,monospace;font-size:.875rem;line-height:1.25rem;line-height:1.625}.dark{color-scheme:dark}.visible{visibility:visible}.collapse{visibility:collapse}.static{position:static}.fixed{position:fixed}.absolute{position:absolute}.relative{position:relative}.sticky{position:sticky}.mb-2{margin-bottom:.5rem}.ml-2{margin-left:.5rem}.mr-1{margin-right:.25rem}.mt-2{margin-top:.5rem}.mt-4{margin-top:1rem}.block{display:block}.inline{display:inline}.flex{display:flex}.table{display:table}.grid{display:grid}.hidden{display:none}.flex-shrink{flex-shrink:1}.border-collapse{border-collapse:collapse}.transform{transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skew(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.resize{resize:both}.flex-wrap{flex-wrap:wrap}.border{border-width:1px}.text-center{text-align:center}.uppercase{text-transform:uppercase}.italic{font-style:italic}.underline{text-decoration-line:underline}.shadow{--tw-shadow: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1);--tw-shadow-colored: 0 1px 3px 0 var(--tw-shadow-color), 0 1px 2px -1px var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow, 0 0 #0000),var(--tw-ring-shadow, 0 0 #0000),var(--tw-shadow)}.outline{outline-style:solid}.blur{--tw-blur: blur(8px);filter:var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}.filter{filter:var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}.backdrop-filter{-webkit-backdrop-filter:var(--tw-backdrop-blur) var(--tw-backdrop-brightness) var(--tw-backdrop-contrast) var(--tw-backdrop-grayscale) var(--tw-backdrop-hue-rotate) var(--tw-backdrop-invert) var(--tw-backdrop-opacity) var(--tw-backdrop-saturate) var(--tw-backdrop-sepia);backdrop-filter:var(--tw-backdrop-blur) var(--tw-backdrop-brightness) var(--tw-backdrop-contrast) var(--tw-backdrop-grayscale) var(--tw-backdrop-hue-rotate) var(--tw-backdrop-invert) var(--tw-backdrop-opacity) var(--tw-backdrop-saturate) var(--tw-backdrop-sepia)}.transition{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,opacity,box-shadow,transform,filter,backdrop-filter;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}body{margin:0;font-family:Inter,PingFang SC,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background-color:#f8fbff;color:#1f2933}a{color:inherit;text-decoration:none}:root{--font-family: var(--user-font-family), "Open Sans", "Seravek", "Segoe UI", "Verdana", "PingFang SC", "Hiragino Sans GB", "Lantinghei SC", "Microsoft Yahei", "WenQuanYi Micro Hei", "sans";--code-font-family: var(--user-code-font-family), "monaco", "Source Code Pro", "Consolas", "Lucida Console", "monospace";--font-size: 16px;--font-size-secondary: 14px;--font-size-small: 13px;--font-size-large: 18px;--font-size-h1: 2em;--font-size-h2: 1.5em;--font-size-h3: 1.25em;--font-size-h4: 1.1em;--font-size-h5: 1em;--font-size-h6: .9em;--line-height-base: 1.75;--line-height-tight: 1.5;--line-height-loose: 2;--primary-color: #5f9fd6;--text-1-color: #555;--text-2-color: #777;--text-3-color: #999;--header-1-color: #3d3d3d;--header-2-color: #4d4d4d;--border-color: #ddd;--page-bg-color: #edf0f2;--content-bg-color: #fff;--code-bg-color: #f8f8f8;--code-border-color: #e5e5e5;--link-color: #4183c4;--link-hover-color: #2d6da3;--blockquote-bg: #f8f9fa;--blockquote-border: #6c757d;--katex-color: #374151;--katex-error-color: #cc0000;--katex-error-bg: #f8f8f8;--katex-error-border: #ddd;--shadow-sm: 0 1px 2px rgba(0,0,0,.05);--shadow: 0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.24);--shadow-lg: 0 10px 40px rgba(0,0,0,.15);--border-radius: 4px;--border-radius-lg: 8px;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 3rem}*{box-sizing:border-box}html{font-size:var(--font-size);line-height:var(--line-height-base);color:var(--text-1-color);font-family:var(--font-family);background-color:var(--page-bg-color)}body{margin:0;padding:0;font-family:var(--font-family);line-height:var(--line-height-base);color:var(--text-1-color);background-color:var(--page-bg-color);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.typo{font-family:var(--font-family);line-height:var(--line-height-base);font-size:var(--font-size);color:var(--text-1-color);word-wrap:break-word}.richmedia{max-width:100%;overflow-x:auto}.markdown-content{font-family:var(--font-family);line-height:var(--line-height-base);color:var(--text-1-color);word-wrap:break-word;padding-top:.27em;padding-bottom:.27em}.markdown-content h1,.markdown-content h2,.markdown-content h3,.markdown-content h4,.markdown-content h5,.markdown-content h6{margin-top:1.5em;margin-bottom:.5em;font-weight:600;color:var(--header-1-color);line-height:var(--line-height-tight)}.markdown-content h1{font-size:var(--font-size-h1);border-bottom:1px solid var(--border-color);padding-bottom:.3em}.markdown-content h2{font-size:var(--font-size-h2);border-bottom:1px solid var(--border-color);padding-bottom:.3em}.markdown-content h3{font-size:var(--font-size-h3)}.markdown-content h4{font-size:var(--font-size-h4)}.markdown-content h5{font-size:var(--font-size-h5)}.markdown-content h6{font-size:var(--font-size-h6)}.markdown-content p{margin-bottom:1em;text-align:justify}.markdown-content a{color:var(--link-color);text-decoration:none;border-bottom:1px solid transparent;transition:border-bottom-color .2s ease-in-out}.markdown-content a:hover{color:var(--link-hover-color);border-bottom-color:var(--link-hover-color)}.markdown-content a:focus{outline:2px solid var(--primary-color);outline-offset:2px}.markdown-content ul,.markdown-content ol{margin-bottom:1em;padding-left:1.5em}.markdown-content li{margin-bottom:.25em}.markdown-content ul ul,.markdown-content ol ol,.markdown-content ul ol,.markdown-content ol ul{margin-bottom:0}.markdown-content blockquote{margin:1em 0;padding:.5em 1em;border-left:4px solid var(--blockquote-border);background-color:var(--blockquote-bg);color:var(--text-2-color);border-radius:var(--border-radius)}.markdown-content blockquote p:last-child{margin-bottom:0}.markdown-content code{font-family:var(--code-font-family);background-color:var(--code-bg-color);padding:.125rem .25rem;border-radius:var(--border-radius);font-size:.875em;border:1px solid var(--code-border-color)}.markdown-content pre{margin:1em 0;padding:12px;background-color:var(--code-bg-color);border:1px solid var(--code-border-color);border-radius:var(--border-radius);overflow-x:auto;font-family:var(--code-font-family);font-size:var(--font-size-small);line-height:var(--line-height-tight)}.markdown-content pre code{background:transparent;padding:0;border:none;font-size:inherit}.markdown-content table{width:100%;border-collapse:collapse;margin:1em 0;font-size:var(--font-size-secondary)}.markdown-content th,.markdown-content td{border:1px solid var(--border-color);padding:.5rem;text-align:left;vertical-align:top}.markdown-content th{background-color:var(--blockquote-bg);font-weight:600;color:var(--header-2-color)}.markdown-content table tr:nth-child(2n){background-color:#fafafa}.markdown-content hr{border:0;height:1px;background-image:linear-gradient(to right,rgba(0,0,0,0),var(--border-color),rgba(0,0,0,0));margin:2em 0}.markdown-content img{max-width:100%;height:auto;display:block;margin:1em auto;border-radius:var(--border-radius);box-shadow:var(--shadow-sm)}.markdown-content img.markdown-image{cursor:pointer;transition:transform .2s ease}.markdown-content img.markdown-image:hover{transform:scale(1.02)}.table-of-contents{background:var(--blockquote-bg);border:1px solid var(--border-color);border-radius:var(--border-radius);padding:1em;margin-bottom:1em}.table-of-contents ul{padding-left:1em;margin:0}.table-of-contents li{margin-bottom:.25em}.table-of-contents a{color:var(--link-color);text-decoration:none}.table-of-contents a:hover{text-decoration:underline}.footnotes{margin-top:2em;padding-top:1em;border-top:1px solid var(--border-color);font-size:var(--font-size-small)}.footnotes ol{padding-left:1.5em;margin:0}.footnotes li{margin-bottom:.5em}.footnote-backref{font-family:var(--code-font-family);font-size:.8em;text-decoration:none;color:var(--text-3-color)}.footnote-backref:hover{color:var(--link-color)}@media (max-width: 768px){:root{--font-size: 14px;--spacing: .75rem;--spacing-lg: 1rem}.markdown-content{padding:0 var(--spacing)}.markdown-content h1{font-size:1.5em}.markdown-content h2{font-size:1.3em}.markdown-content pre{padding:8px;font-size:12px}}@media print{:root{--page-bg-color: #fff;--text-1-color: #000;--border-color: #ccc}.markdown-content a{color:#000;text-decoration:underline}.markdown-content pre,.markdown-content blockquote{border:1px solid var(--border-color);background:#f9f9f9}}.katex{font:1.2em/1.2 var(--font-family);text-indent:0;text-rendering:auto;border-color:currentColor;color:var(--katex-color)}.katex-display{display:block;text-align:center;margin:1em 0;position:relative}.katex-display>.katex{display:inline-block;text-align:center;max-width:100%;overflow-x:auto;overflow-y:hidden;white-space:nowrap}.katex-inline{display:inline-block;margin:0 2px;vertical-align:-.1em;position:relative}.katex-html{color:var(--katex-color)}.katex-mathml{position:absolute;clip:rect(1px,1px,1px,1px);padding:0;border:0;height:1px;width:1px;overflow:hidden}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.44em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.728em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:2.074em}.katex .mathnormal{font-family:KaTeX_Math;font-style:normal}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-weight:700;font-style:italic}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .int{font-family:KaTeX_Size1;text-align:center}.katex .rm{font-size:.85em}.katex .frac-line{display:inline-block;width:100%;border-bottom-style:solid;border-bottom-width:.04em;border-bottom-color:var(--katex-color)}.katex .fontsize-ensurer.reset-size1.size1 .sqrt>.root{margin-left:.27777778em;margin-right:-.55555556em}.katex .sizing.reset-size1.size2 .sqrt>.root{margin-left:.33333333em;margin-right:-.66666667em}.katex .sqrt>.root{margin-left:.27777778em;margin-right:-.55555556em}.katex .arraycolsep{width:.1em}.katex .col-align-c>.vlist-t{text-align:center}.katex .col-align-l>.vlist-t{text-align:left}.katex .col-align-r>.vlist-t{text-align:right}.katex .hline,.katex .hdashline,.katex .hfill,.katex .rule{display:inline-block;height:0;border:solid;border-color:var(--katex-color)}.katex .hdashline{border-bottom-style:dashed}.katex .hline{border-bottom-style:solid;width:100%}.katex .rule{border-style:solid;position:relative}.katex-error{color:var(--katex-error-color)!important;background-color:var(--katex-error-bg)!important;border:1px solid var(--katex-error-border)!important;border-radius:3px!important;padding:.2em .4em!important;font-size:.9em!important;white-space:pre-wrap!important;word-break:break-word!important}.katex-block.katex-error{display:block!important;text-align:center!important;margin:1em 0!important;padding:.5em!important;background-color:var(--katex-error-bg)!important}.math-block{margin:1em 0;text-align:center;overflow-x:auto;overflow-y:hidden;white-space:nowrap}.math-block .katex-display{margin:0}.markdown-content .katex{color:var(--katex-color)}.markdown-content .katex-display{margin:1em 0}.markdown-content .katex-inline{vertical-align:-.1em}@media (max-width: 768px){.katex{font-size:1.1em}.katex-display{font-size:.9em;overflow-x:auto;padding-bottom:2px}.math-block{font-size:.9em}}@media print{.katex{color:#000!important}.katex-error{background-color:#fff!important;border-color:#000!important;color:#000!important}}.katex .highlight{background-color:#ffeb3b;padding:.1em .2em;border-radius:2px}.katex .comment{color:#999;font-style:italic}.katex .align{text-align:left}.katex .align>.vlist{display:inline-block;vertical-align:baseline}.katex .textcolor{color:inherit}.katex .tiny{font-size:.5em}.katex .scriptsize{font-size:.7em}.katex .footnotesize{font-size:.8em}.katex .small{font-size:.9em}.katex .normalsize{font-size:1em}.katex .large{font-size:1.2em}.katex .Large{font-size:1.44em}.katex .LARGE{font-size:1.728em}.katex .huge{font-size:2.074em}.katex .Huge{font-size:2.488em}.markdown-content .math-block{background:transparent;border:none;padding:0;margin:1em 0}.markdown-content table .katex{font-size:.9em}.markdown-content li .katex{font-size:.95em}.markdown-content blockquote .katex{color:var(--katex-color)}.file-proxy-image{max-width:100%;height:auto;border-radius:4px;box-shadow:0 2px 8px #0000001a;margin:8px 0}.file-proxy-pdf{border:1px solid #ddd;border-radius:4px;margin:8px 0;box-shadow:0 2px 8px #0000001a}.file-proxy-video{max-width:100%;border-radius:4px;margin:8px 0;box-shadow:0 2px 8px #0000001a}.file-proxy-audio{width:100%;margin:8px 0;border-radius:4px}.file-proxy-text-container{border:1px solid #ddd;border-radius:4px;margin:8px 0;overflow:hidden;background:#f9f9f9}.file-proxy-header{background:#f0f0f0;padding:8px 12px;border-bottom:1px solid #ddd;display:flex;justify-content:space-between;align-items:center}.file-proxy-text{border:none;background:#fff;width:100%;min-height:200px}.file-proxy-code-container{border:1px solid #ddd;border-radius:4px;margin:8px 0;overflow:hidden;background:#f8f9fa}.file-proxy-code{background:#282c34;color:#abb2bf;padding:16px;margin:0;overflow-x:auto;font-family:Courier New,Monaco,monospace;font-size:14px;line-height:1.5;white-space:pre-wrap;word-wrap:break-word}.file-proxy-archive-container,.file-proxy-office-container,.file-proxy-default-container{border:1px solid #ddd;border-radius:4px;margin:8px 0;padding:16px;background:#f9f9f9;display:flex;align-items:center;gap:12px;transition:all .2s ease}.file-proxy-archive-container:hover,.file-proxy-office-container:hover,.file-proxy-default-container:hover{border-color:#409eff;box-shadow:0 2px 8px #409eff33;background:#f0f8ff}.file-proxy-icon{font-size:32px;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:#fff;border-radius:4px;border:1px solid #ddd}.file-proxy-info{flex:1}.file-proxy-info h4{margin:0 0 4px;color:#333;font-size:16px;font-weight:600}.file-proxy-info p{margin:0 0 8px;color:#666;font-size:14px}.file-proxy-download{display:inline-block;padding:6px 12px;background:#409eff;color:#fff;text-decoration:none;border-radius:4px;font-size:12px;transition:background-color .2s ease}.file-proxy-download:hover{background:#337ecc;color:#fff;text-decoration:none}@media (max-width: 768px){.file-proxy-archive-container,.file-proxy-office-container,.file-proxy-default-container{flex-direction:column;text-align:center}.file-proxy-icon{width:64px;height:64px;font-size:40px}.file-proxy-pdf{height:400px}.file-proxy-video{max-height:300px}}.file-proxy-loading{display:flex;align-items:center;justify-content:center;min-height:200px;background:#f9f9f9;border:1px solid #ddd;border-radius:4px;margin:8px 0;color:#666;font-size:14px}.file-proxy-loading:before{content:"⏳ 加载中..."}.file-proxy-error{display:flex;align-items:center;justify-content:center;min-height:200px;background:#fef2f2;border:1px solid #fecaca;border-radius:4px;margin:8px 0;color:#dc2626;font-size:14px;flex-direction:column;gap:8px}.file-proxy-error:before{content:"❌ 文件加载失败";font-weight:600}.file-proxy-error:after{content:attr(data-error);font-size:12px;color:#991b1b}@keyframes fileProxyFadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.file-proxy-image,.file-proxy-pdf,.file-proxy-video,.file-proxy-audio,.file-proxy-text-container,.file-proxy-code-container,.file-proxy-archive-container,.file-proxy-office-container,.file-proxy-default-container{animation:fileProxyFadeIn .3s ease-out}@media (prefers-color-scheme: dark){.file-proxy-text-container,.file-proxy-code-container,.file-proxy-archive-container,.file-proxy-office-container,.file-proxy-default-container{background:#2d3748;border-color:#4a5568;color:#e2e8f0}.file-proxy-header{background:#4a5568;border-color:#718096}.file-proxy-text{background:#1a202c;color:#e2e8f0}.file-proxy-icon{background:#4a5568;border-color:#718096}.file-proxy-info h4{color:#e2e8f0}.file-proxy-info p{color:#a0aec0}.file-proxy-archive-container:hover,.file-proxy-office-container:hover,.file-proxy-default-container:hover{background:#4a5568;border-color:#63b3ed}.file-proxy-loading{background:#2d3748;border-color:#4a5568;color:#a0aec0}.file-proxy-error{background:#742a2a;border-color:#9b2c2c;color:#fed7d7}}.file-proxy-svg{max-width:100%;height:auto;border:1px solid #ddd;border-radius:4px;padding:8px;background:#fff}.file-proxy-pdf.embedded{border:none;background:transparent;box-shadow:none}.file-proxy-inline{display:inline-block;vertical-align:middle;margin:0 4px}.file-proxy-inline.file-proxy-image{max-height:1.2em;width:auto}.file-proxy-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin:16px 0}.file-proxy-grid .file-proxy-archive-container,.file-proxy-grid .file-proxy-office-container,.file-proxy-grid .file-proxy-default-container{flex-direction:column;text-align:center;padding:24px 16px}
