*,: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: }.static{position:static}.fixed{position:fixed}.sticky{position:sticky}.bottom-4{bottom:1rem}.left-4{left:1rem}.right-4{right:1rem}.top-4{top:1rem}.z-10{z-index:10}.mx-4{margin-left:1rem;margin-right:1rem}.mx-auto{margin-left:auto;margin-right:auto}.mb-0{margin-bottom:0}.mb-1{margin-bottom:.25rem}.mb-2{margin-bottom:.5rem}.ml-1{margin-left:.25rem}.ml-2{margin-left:.5rem}.mr-2{margin-right:.5rem}.mt-1{margin-top:.25rem}.mt-2{margin-top:.5rem}.mt-3{margin-top:.75rem}.mt-4{margin-top:1rem}.mt-6{margin-top:1.5rem}.block{display:block}.inline-block{display:inline-block}.inline{display:inline}.inline-flex{display:inline-flex}.grid{display:grid}.hidden{display:none}.h-16{height:4rem}.h-64{height:16rem}.min-h-screen{min-height:100vh}.w-16{width:4rem}.max-w-6xl{max-width:72rem}.max-w-full{max-width:100%}.max-w-md{max-width:28rem}.grid-cols-5{grid-template-columns:repeat(5,minmax(0,1fr))}.flex-wrap{flex-wrap:wrap}.gap-2{gap:.5rem}.space-x-2>:not([hidden])~:not([hidden]){--tw-space-x-reverse: 0;margin-right:calc(.5rem * var(--tw-space-x-reverse));margin-left:calc(.5rem * calc(1 - var(--tw-space-x-reverse)))}.space-x-3>:not([hidden])~:not([hidden]){--tw-space-x-reverse: 0;margin-right:calc(.75rem * var(--tw-space-x-reverse));margin-left:calc(.75rem * calc(1 - var(--tw-space-x-reverse)))}.space-x-4>:not([hidden])~:not([hidden]){--tw-space-x-reverse: 0;margin-right:calc(1rem * var(--tw-space-x-reverse));margin-left:calc(1rem * calc(1 - var(--tw-space-x-reverse)))}.space-y-1>:not([hidden])~:not([hidden]){--tw-space-y-reverse: 0;margin-top:calc(.25rem * calc(1 - var(--tw-space-y-reverse)));margin-bottom:calc(.25rem * var(--tw-space-y-reverse))}.space-y-2>:not([hidden])~:not([hidden]){--tw-space-y-reverse: 0;margin-top:calc(.5rem * calc(1 - var(--tw-space-y-reverse)));margin-bottom:calc(.5rem * var(--tw-space-y-reverse))}.space-y-3>:not([hidden])~:not([hidden]){--tw-space-y-reverse: 0;margin-top:calc(.75rem * calc(1 - var(--tw-space-y-reverse)));margin-bottom:calc(.75rem * var(--tw-space-y-reverse))}.space-y-4>:not([hidden])~:not([hidden]){--tw-space-y-reverse: 0;margin-top:calc(1rem * calc(1 - var(--tw-space-y-reverse)));margin-bottom:calc(1rem * var(--tw-space-y-reverse))}.rounded{border-radius:.25rem}.rounded-full{border-radius:9999px}.border{border-width:1px}.border-t{border-top-width:1px}.border-blue-200{--tw-border-opacity: 1;border-color:rgb(191 219 254 / var(--tw-border-opacity, 1))}.border-blue-500{--tw-border-opacity: 1;border-color:rgb(59 130 246 / var(--tw-border-opacity, 1))}.border-gray-200{--tw-border-opacity: 1;border-color:rgb(229 231 235 / var(--tw-border-opacity, 1))}.border-green-200{--tw-border-opacity: 1;border-color:rgb(187 247 208 / var(--tw-border-opacity, 1))}.border-green-300{--tw-border-opacity: 1;border-color:rgb(134 239 172 / var(--tw-border-opacity, 1))}.border-green-500{--tw-border-opacity: 1;border-color:rgb(34 197 94 / var(--tw-border-opacity, 1))}.border-red-200{--tw-border-opacity: 1;border-color:rgb(254 202 202 / var(--tw-border-opacity, 1))}.border-red-300{--tw-border-opacity: 1;border-color:rgb(252 165 165 / var(--tw-border-opacity, 1))}.bg-blue-50{--tw-bg-opacity: 1;background-color:rgb(239 246 255 / var(--tw-bg-opacity, 1))}.bg-gray-50{--tw-bg-opacity: 1;background-color:rgb(249 250 251 / var(--tw-bg-opacity, 1))}.bg-green-100{--tw-bg-opacity: 1;background-color:rgb(220 252 231 / var(--tw-bg-opacity, 1))}.bg-green-50{--tw-bg-opacity: 1;background-color:rgb(240 253 244 / var(--tw-bg-opacity, 1))}.bg-primary-500{--tw-bg-opacity: 1;background-color:rgb(24 144 255 / var(--tw-bg-opacity, 1))}.bg-red-50{--tw-bg-opacity: 1;background-color:rgb(254 242 242 / var(--tw-bg-opacity, 1))}.bg-gradient-to-br{background-image:linear-gradient(to bottom right,var(--tw-gradient-stops))}.from-blue-50{--tw-gradient-from: #eff6ff var(--tw-gradient-from-position);--tw-gradient-to: rgb(239 246 255 / 0) var(--tw-gradient-to-position);--tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to)}.from-indigo-50{--tw-gradient-from: #eef2ff var(--tw-gradient-from-position);--tw-gradient-to: rgb(238 242 255 / 0) var(--tw-gradient-to-position);--tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to)}.to-blue-50{--tw-gradient-to: #eff6ff var(--tw-gradient-to-position)}.to-indigo-100{--tw-gradient-to: #e0e7ff var(--tw-gradient-to-position)}.p-2{padding:.5rem}.p-3{padding:.75rem}.p-6{padding:1.5rem}.px-0{padding-left:0;padding-right:0}.py-12{padding-top:3rem;padding-bottom:3rem}.py-8{padding-top:2rem;padding-bottom:2rem}.pr-4{padding-right:1rem}.pt-3{padding-top:.75rem}.pt-4{padding-top:1rem}.text-2xl{font-size:1.5rem;line-height:2rem}.text-6xl{font-size:3.75rem;line-height:1}.font-bold{font-weight:700}.font-medium{font-weight:500}.font-semibold{font-weight:600}.italic{font-style:italic}.text-gray-400{--tw-text-opacity: 1;color:rgb(156 163 175 / var(--tw-text-opacity, 1))}.text-gray-500{--tw-text-opacity: 1;color:rgb(107 114 128 / var(--tw-text-opacity, 1))}.text-gray-700{--tw-text-opacity: 1;color:rgb(55 65 81 / var(--tw-text-opacity, 1))}.text-green-500{--tw-text-opacity: 1;color:rgb(34 197 94 / var(--tw-text-opacity, 1))}.text-green-600{--tw-text-opacity: 1;color:rgb(22 163 74 / var(--tw-text-opacity, 1))}.text-red-500{--tw-text-opacity: 1;color:rgb(239 68 68 / var(--tw-text-opacity, 1))}.text-white{--tw-text-opacity: 1;color:rgb(255 255 255 / var(--tw-text-opacity, 1))}.opacity-0{opacity:0}.opacity-10{opacity:.1}.shadow-lg{--tw-shadow: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--tw-shadow-colored: 0 10px 15px -3px var(--tw-shadow-color), 0 4px 6px -4px var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow, 0 0 #0000),var(--tw-ring-shadow, 0 0 #0000),var(--tw-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)}.transition{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,opacity,box-shadow,transform,filter,-webkit-backdrop-filter;transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,opacity,box-shadow,transform,filter,backdrop-filter;transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,opacity,box-shadow,transform,filter,backdrop-filter,-webkit-backdrop-filter;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.transition-all{transition-property:all;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.duration-300{transition-duration:.3s}:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;min-width:320px;min-height:100vh;background-color:#f5f5f5}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.exam-container{margin-left:auto;margin-right:auto;max-width:80rem;padding-left:1rem;padding-right:1rem}@media (min-width: 640px){.exam-container{padding-left:1.5rem;padding-right:1.5rem}}@media (min-width: 1024px){.exam-container{padding-left:2rem;padding-right:2rem}}.question-card{margin-bottom:1rem;border-radius:.5rem;border-width:1px;--tw-border-opacity: 1;border-color:rgb(229 231 235 / var(--tw-border-opacity, 1));--tw-bg-opacity: 1;background-color:rgb(255 255 255 / var(--tw-bg-opacity, 1));padding:1.5rem;--tw-shadow: 0 1px 2px 0 rgb(0 0 0 / .05);--tw-shadow-colored: 0 1px 2px 0 var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow, 0 0 #0000),var(--tw-ring-shadow, 0 0 #0000),var(--tw-shadow)}.timer-display{border-radius:.5rem;border-width:1px;--tw-border-opacity: 1;border-color:rgb(254 202 202 / var(--tw-border-opacity, 1));--tw-bg-opacity: 1;background-color:rgb(254 242 242 / var(--tw-bg-opacity, 1));padding:.5rem 1rem;font-weight:600;--tw-text-opacity: 1;color:rgb(220 38 38 / var(--tw-text-opacity, 1))}.code-editor{border:1px solid #d9d9d9;border-radius:6px}.programming-badge{display:inline-flex;align-items:center;border-radius:9999px;padding:.125rem .625rem;font-size:.75rem;line-height:1rem;font-weight:500}.programming-badge.scratch{--tw-bg-opacity: 1;background-color:rgb(255 237 213 / var(--tw-bg-opacity, 1));--tw-text-opacity: 1;color:rgb(154 52 18 / var(--tw-text-opacity, 1))}.programming-badge.python{--tw-bg-opacity: 1;background-color:rgb(219 234 254 / var(--tw-bg-opacity, 1));--tw-text-opacity: 1;color:rgb(30 64 175 / var(--tw-text-opacity, 1))}.programming-badge.cpp{--tw-bg-opacity: 1;background-color:rgb(220 252 231 / var(--tw-bg-opacity, 1));--tw-text-opacity: 1;color:rgb(22 101 52 / var(--tw-text-opacity, 1))}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.hover\:bg-gray-50:hover{--tw-bg-opacity: 1;background-color:rgb(249 250 251 / var(--tw-bg-opacity, 1))}.user-profile-page{padding:24px;background:#f5f5f5;min-height:100vh}.page-header{margin-bottom:24px}.page-header h1{margin:0;font-size:24px;font-weight:600;color:#262626}.page-header p{margin:8px 0 0;color:#8c8c8c;font-size:14px}.stats-card .ant-card-head-title{font-weight:600;font-size:16px}.stats-card .ant-statistic-title{font-size:14px;color:#8c8c8c;margin-bottom:8px}.stats-card .ant-statistic-content{font-size:20px;font-weight:600}.stats-card .ant-statistic-content-prefix{margin-right:8px;color:#1890ff}.ant-table-tbody>tr>td{padding:12px 16px}.ant-table-thead>tr>th{background:#fafafa;font-weight:600}.ant-pagination{margin-top:24px}.ant-tag{border-radius:4px;font-size:12px;padding:2px 8px}.ant-btn-sm{height:24px;padding:0 8px;font-size:12px;border-radius:4px}.ant-tabs-tab{font-weight:500}.ant-tabs-tab-active .ant-tabs-tab-btn{color:#1890ff;font-weight:600}.ant-select{border-radius:4px}@media (max-width: 768px){.user-profile-page{padding:16px}.stats-card .ant-row{flex-direction:column}.stats-card .ant-col{margin-bottom:16px}.ant-table{font-size:12px}.ant-table-tbody>tr>td{padding:8px 12px}}.ant-empty{margin:40px 0}.ant-spin-container{min-height:200px}.success-text{color:#52c41a}.error-text{color:#ff4d4f}.warning-text{color:#faad14}.ant-card{box-shadow:0 2px 8px #0000000f;border-radius:8px}.ant-statistic-content-value{background:linear-gradient(90deg,#1890ff,#36cfc9);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.python-debugger-page{padding:24px;max-width:1600px;margin:0 auto}.header-card{margin-bottom:16px}.header-content{display:flex;justify-content:space-between;align-items:center}.quota-info{text-align:right}.debugger-container{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}.editor-card,.output-card{height:600px}.output-content{font-family:Consolas,Monaco,Courier New,monospace;font-size:14px;line-height:1.6;padding:16px;background-color:#1e1e1e;color:#d4d4d4;border-radius:4px;min-height:500px;overflow-y:auto;white-space:pre-wrap;word-wrap:break-word}@media (max-width: 1200px){.debugger-container{grid-template-columns:1fr}.header-content{flex-direction:column;align-items:flex-start;gap:16px}.quota-info{text-align:left}}#root{width:100%;min-height:100vh;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif}.App{width:100%;min-height:100vh}.bg-gradient-to-r{background-image:linear-gradient(to right,var(--tw-gradient-stops))}.from-blue-50{--tw-gradient-from: #eff6ff;--tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, rgba(239, 246, 255, 0))}.to-indigo-100{--tw-gradient-to: #e0e7ff}.from-indigo-50{--tw-gradient-from: #eef2ff;--tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, rgba(238, 242, 255, 0))}.to-blue-50{--tw-gradient-to: #eff6ff}.space-y-6>*+*{margin-top:1.5rem}.space-y-4>*+*{margin-top:1rem}.space-y-3>*+*{margin-top:.75rem}.space-y-2>*+*{margin-top:.5rem}.space-x-2>*+*{margin-left:.5rem}.space-x-3>*+*{margin-left:.75rem}.text-center{text-align:center}.text-left{text-align:left}.text-lg{font-size:1.125rem;line-height:1.75rem}.text-xl{font-size:1.25rem;line-height:1.75rem}.text-sm{font-size:.875rem;line-height:1.25rem}.text-gray-600{color:#6b7280}.flex{display:flex}.flex-1{flex:1 1 0%}.items-center{align-items:center}.items-start{align-items:flex-start}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.h-full{height:100%}.h-auto{height:auto}.w-full{width:100%}.min-h-full{min-height:100%}.mb-8{margin-bottom:2rem}.mb-6{margin-bottom:1.5rem}.mb-4{margin-bottom:1rem}.mr-3{margin-right:.75rem}.p-4{padding:1rem}.p-8{padding:2rem}.py-4{padding-top:1rem;padding-bottom:1rem}.rounded-lg{border-radius:.5rem}.rounded-2xl{border-radius:1rem}.cursor-pointer{cursor:pointer}.relative{position:relative}.absolute{position:absolute}.overflow-hidden{overflow:hidden}.ant-card{border-radius:12px!important;box-shadow:0 1px 3px #0000001a,0 1px 2px #0000000f!important;transition:all .3s ease!important;border:1px solid #f0f0f0!important}.ant-card:hover{box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f!important;transform:translateY(-2px)}.ant-card-head{border-bottom:1px solid #f0f0f0!important;border-radius:12px 12px 0 0!important}.ant-statistic .ant-statistic-title{font-weight:500!important;color:#6b7280!important;margin-bottom:8px!important}.ant-statistic .ant-statistic-content{font-weight:600!important}.ant-statistic .ant-statistic-content-value{display:flex!important;align-items:center!important}.ant-btn{border-radius:8px!important;font-weight:500!important;transition:all .3s ease!important;border:1px solid #d9d9d9!important}.ant-btn-primary{background:linear-gradient(135deg,#1890ff,#096dd9)!important;border:none!important;box-shadow:0 2px 4px #1890ff4d!important}.ant-btn-primary:hover,.ant-btn-primary:focus{background:linear-gradient(135deg,#40a9ff,#1890ff)!important;transform:translateY(-1px);box-shadow:0 4px 8px #1890ff66!important}.ant-btn:hover,.ant-btn:focus{border-color:#40a9ff!important;color:#40a9ff!important}.ant-menu-dark .ant-menu-item{border-radius:8px!important;margin:4px 8px!important;width:calc(100% - 16px)!important;transition:all .3s ease!important}.ant-menu-dark .ant-menu-item:hover{background:#1890ff26!important;transform:translate(4px)}.ant-menu-dark .ant-menu-item-selected{background:linear-gradient(135deg,#1890ff33,#722ed133)!important;border-right:3px solid #1890ff!important}.ant-avatar{transition:all .3s ease!important}.ant-avatar:hover{transform:scale(1.05);box-shadow:0 4px 8px #1890ff4d!important}.text-blue-500{color:#3b82f6!important}.text-green-500{color:#10b981!important}.text-purple-500{color:#8b5cf6!important}.text-red-500{color:#ef4444!important}.text-yellow-500{color:#f59e0b!important}.hover\:bg-gray-50:hover{background-color:#f9fafb!important}.transition-all{transition:all .3s ease!important}.duration-300{transition-duration:.3s!important}@media (max-width: 768px){.space-y-6>*+*{margin-top:1rem}.ant-card{margin-bottom:1rem}.p-8{padding:1.5rem}.text-xl{font-size:1.125rem}}@media (max-width: 576px){.ant-layout-content{margin:16px!important;padding:24px!important}.space-x-3>*+*{margin-left:.5rem}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-in-up{animation:fadeInUp .6s ease-out}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}.animate-pulse{animation:pulse 2s cubic-bezier(.4,0,.6,1) infinite}.loading-container{display:flex;justify-content:center;align-items:center;height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-size:1.125rem}.ant-badge .ant-badge-count{background:linear-gradient(135deg,#ff4d4f,#ff7875)!important;border:1px solid #fff!important;box-shadow:0 2px 4px #ff4d4f4d!important}.ant-dropdown{border-radius:8px!important;box-shadow:0 4px 12px #00000026!important}.ant-dropdown .ant-dropdown-menu{border-radius:8px!important;padding:8px!important}.ant-dropdown .ant-dropdown-menu-item{border-radius:6px!important;transition:all .3s ease!important}.ant-dropdown .ant-dropdown-menu-item:hover{background:#1890ff1a!important}.logo{height:6em;padding:1.5em;will-change:filter;transition:filter .3s}.logo:hover{filter:drop-shadow(0 0 2em #646cffaa)}.logo.react:hover{filter:drop-shadow(0 0 2em #61dafbaa)}@keyframes logo-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (prefers-reduced-motion: no-preference){a:nth-of-type(2) .logo{animation:logo-spin infinite 20s linear}}.card{padding:2em}.read-the-docs{color:#888}