:root{--vt-c-white: #ffffff;--vt-c-white-soft: #f8f8f8;--vt-c-white-mute: #f2f2f2;--vt-c-black: #181818;--vt-c-black-soft: #222222;--vt-c-black-mute: #282828;--vt-c-indigo: #2c3e50;--vt-c-divider-light-1: rgba(60, 60, 60, .29);--vt-c-divider-light-2: rgba(60, 60, 60, .12);--vt-c-divider-dark-1: rgba(84, 84, 84, .65);--vt-c-divider-dark-2: rgba(84, 84, 84, .48);--vt-c-text-light-1: var(--vt-c-indigo);--vt-c-text-light-2: rgba(60, 60, 60, .66);--vt-c-text-dark-1: var(--vt-c-white);--vt-c-text-dark-2: rgba(235, 235, 235, .64)}:root{--color-background: var(--vt-c-white);--color-background-soft: var(--vt-c-white-soft);--color-background-mute: var(--vt-c-white-mute);--color-border: var(--vt-c-divider-light-2);--color-border-hover: var(--vt-c-divider-light-1);--color-heading: var(--vt-c-text-light-1);--color-text: var(--vt-c-text-light-1);--section-gap: 160px}*,*:before,*:after{box-sizing:border-box;margin:0;font-weight:400}body{min-height:100vh;min-height:100dvh;color:var(--color-text);background:#f5f7fa;line-height:1.6;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;font-size:15px;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{margin:0 auto;padding:2rem;font-weight:400}#app.student-ui-v2-root{width:100%;min-height:100vh;min-height:100dvh;margin:0;padding:0}.student-view{max-width:1200px;margin:0 auto}.teacher-view{max-width:1600px;margin:0 auto}a,.green{text-decoration:none;color:#00bd7e;transition:.4s;padding:3px}@media(hover:hover){a:hover{background-color:#00bd7e33}}.container-responsive{max-width:1200px;margin:0 auto;padding:24px}.teacher-view .el-table{font-size:14px}.teacher-view .el-card{margin-bottom:24px}@media(max-width:768px){.student-view .container-responsive,[data-role=student] .container-responsive{padding:12px}.student-view .el-button,[data-role=student] .el-button{min-height:35px;padding:10px 16px;font-size:12px}.student-view .el-input__inner,[data-role=student] .el-input__inner{min-height:35px}.student-view .el-table,[data-role=student] .el-table{font-size:11px}.student-view .el-card,[data-role=student] .el-card{margin-bottom:10px}.student-view h1,[data-role=student] h1{font-size:16px!important}.student-view h2,[data-role=student] h2{font-size:14px!important}.student-view h3,[data-role=student] h3{font-size:13px!important}.student-view .el-card__body,[data-role=student] .el-card__body{padding:12px}.student-view .el-card__header,[data-role=student] .el-card__header{padding:12px 16px}.student-view .el-descriptions__body .el-descriptions__table .el-descriptions__cell,[data-role=student] .el-descriptions__body .el-descriptions__table .el-descriptions__cell{padding-bottom:6px}}@media(min-width:768px)and (max-width:992px){.container-responsive{padding:20px}}body{overflow-x:hidden}*{box-sizing:border-box}:root{--student-blue-700: #1945b8;--student-blue-600: #2457d6;--student-blue-500: #3f73e5;--student-blue-100: #eaf0ff;--student-blue-50: #f7f9ff;--student-green-700: #177245;--student-green-100: #e9f7ef;--student-amber-800: #8a5700;--student-amber-100: #fff4d6;--student-red-700: #b92d3d;--student-red-800: #9f2534;--student-red-100: #ffedf0;--student-violet-700: #6941c6;--student-violet-100: #f1ebff;--student-slate-950: #172033;--student-slate-800: #344054;--student-slate-700: #475467;--student-slate-600: #667085;--student-slate-500: #8a94a6;--student-slate-400: #98a2b3;--student-slate-200: #dfe5ec;--student-slate-100: #e8edf4;--student-slate-75: #eef1f5;--student-slate-50: #f3f6fb;--student-white: #ffffff;--student-primary: var(--student-blue-600);--student-primary-strong: var(--student-blue-700);--student-primary-soft: var(--student-blue-100);--student-success: var(--student-green-700);--student-success-soft: var(--student-green-100);--student-warning: var(--student-amber-800);--student-warning-soft: var(--student-amber-100);--student-danger: var(--student-red-700);--student-danger-strong: var(--student-red-800);--student-danger-soft: var(--student-red-100);--student-ink: var(--student-slate-950);--student-text: var(--student-slate-800);--student-text-subtle: var(--student-slate-700);--student-muted: var(--student-slate-600);--student-text-disabled: var(--student-slate-400);--student-border: var(--student-slate-200);--student-border-strong: #c7d2e3;--student-background: var(--student-slate-50);--student-surface: var(--student-white);--student-surface-soft: #f6f8fc;--student-surface-hover: #f8faff;--student-surface-pressed: #e5e9f0;--student-primary-border: #cbd8fb;--student-media-background: #111827;--student-gradient-primary: linear-gradient(135deg, #183eaa 0%, #2f68e6 64%, #4b7ce8 100%);--student-gradient-video: linear-gradient(135deg, #1254cf 0%, #1978eb 62%, #42a5f5 100%);--student-overlay: rgba(23, 32, 51, .42);--student-space-1: 4px;--student-space-2: 8px;--student-space-3: 12px;--student-space-4: 16px;--student-space-5: 20px;--student-space-6: 24px;--student-space-7: 28px;--student-space-8: 32px;--student-font-xs: 11px;--student-font-sm: 12px;--student-font-md: 13px;--student-font-body: 14px;--student-font-label: 15px;--student-font-title-sm: 19px;--student-font-title-md: 23px;--student-font-title-lg: 30px;--student-leading-tight: 1.25;--student-leading-body: 1.55;--student-radius-sm: 10px;--student-radius-md: 14px;--student-radius-lg: 20px;--student-radius-xl: 28px;--student-radius-pill: 999px;--student-control-height-sm: 44px;--student-control-height-md: 48px;--student-control-height-lg: 54px;--student-shadow: 0 12px 32px rgba(28, 46, 78, .08);--student-shadow-soft: 0 5px 18px rgba(28, 46, 78, .06);--student-shadow-sm: var(--student-shadow-soft);--student-shadow-md: var(--student-shadow);--student-shadow-dialog: 0 24px 70px rgba(23, 32, 51, .24);--student-focus-ring: 0 0 0 3px rgba(36, 87, 214, .25);--student-duration-fast: .16s;--student-duration-normal: .22s;--student-ease-standard: ease;--student-z-sticky: 40;--student-z-navigation: 100}.student-ui-v2,.student-logout-overlay,.student-feedback-overlay{--el-color-primary: var(--student-primary);--el-color-success: var(--student-success);--el-color-warning: var(--student-warning);--el-color-danger: var(--student-danger);--el-text-color-primary: var(--student-ink);--el-text-color-regular: var(--student-text);--el-text-color-secondary: var(--student-muted);--el-border-color: var(--student-border);--el-border-color-light: var(--student-border);--el-fill-color-light: var(--student-surface-soft);--el-bg-color: var(--student-surface);--el-border-radius-base: var(--student-radius-md)}.student-ui-v2 .student-app-main{min-width:0;padding:0!important;background:radial-gradient(circle at 10% -10%,rgba(36,87,214,.1),transparent 32%),var(--student-background)!important;color:var(--student-text);font-family:-apple-system,BlinkMacSystemFont,Apple SD Gothic Neo,Noto Sans KR,Segoe UI,sans-serif}.student-ui-v2 .student-app-main.has-student-nav{padding-bottom:calc(72px + env(safe-area-inset-bottom))!important}.student-ui-v2 .student-view,.student-ui-v2 .student-page{box-sizing:border-box;width:100%;max-width:760px!important;min-width:0;grid-template-columns:minmax(0,1fr);margin:0 auto!important;padding:20px 16px 32px!important}.student-ui-v2 .student-page--wide{max-width:960px!important}.student-ui-v2 .student-page__header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:20px}.student-ui-v2 .student-page__header>*,.student-ui-v2 .student-section-heading>*,.student-ui-v2 .student-section__header>*{min-width:0}.student-ui-v2 .student-page__eyebrow{margin:0 0 5px;color:var(--student-primary);font-size:var(--student-font-sm);font-weight:700;letter-spacing:.08em;text-transform:uppercase}.student-ui-v2 .student-page__title{margin:0;color:var(--student-ink);font-size:clamp(24px,7vw,var(--student-font-title-lg));font-weight:800;line-height:1.22;letter-spacing:-.035em}.student-ui-v2 .student-page__subtitle{margin:7px 0 0;color:var(--student-muted);font-size:var(--student-font-body);font-weight:500;line-height:var(--student-leading-body)}.student-ui-v2 .student-icon-button{display:grid!important;place-items:center;width:48px!important;min-width:48px!important;height:48px!important;padding:0!important;border:1px solid var(--student-border)!important;border-radius:15px!important;background:#ffffffe0!important;color:var(--student-ink)!important;box-shadow:var(--student-shadow-soft);font:inherit;cursor:pointer;transition:transform var(--student-duration-fast) var(--student-ease-standard),border-color var(--student-duration-fast) var(--student-ease-standard),background-color var(--student-duration-fast) var(--student-ease-standard),color var(--student-duration-fast) var(--student-ease-standard)}.student-ui-v2 .student-icon-button:hover{border-color:var(--student-primary)!important;background:var(--student-surface-hover)!important;color:var(--student-primary)!important}.student-ui-v2 .student-icon-button:active{transform:scale(.94)}.student-ui-v2 .student-hero{position:relative;overflow:hidden;padding:24px;border-radius:var(--student-radius-xl);background:var(--student-gradient-primary);color:#fff;box-shadow:0 18px 36px #2457d638}.student-ui-v2 .student-hero:after{position:absolute;width:150px;height:150px;right:-48px;top:-58px;border:24px solid rgba(255,255,255,.1);border-radius:50%;content:""}.student-ui-v2 .student-hero__label,.student-ui-v2 .student-hero__meta{position:relative;z-index:1;margin:0;color:#fffc;font-size:13px;font-weight:600}.student-ui-v2 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.student-stat-card__value{align-self:end;margin-top:7px;color:var(--student-ink);font-size:27px;font-weight:850;line-height:1.1}.student-ui-v2 .student-stat-card__hint{margin-top:7px;color:var(--student-muted);font-size:11px;font-weight:600}.student-ui-v2 .student-section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:13px}.student-ui-v2 .student-section-heading__eyebrow{margin:0 0 3px;color:var(--student-primary);font-size:11px;font-weight:750;letter-spacing:.06em}.student-ui-v2 .student-section-heading__title{margin:0;color:var(--student-ink);font-size:19px;font-weight:850;letter-spacing:-.02em}.student-ui-v2 .student-stat{min-width:0;padding:17px;border:1px solid rgba(223,229,236,.9);border-radius:var(--student-radius-lg);background:#ffffffeb;box-shadow:var(--student-shadow-soft)}.student-ui-v2 .student-stat__label{color:var(--student-muted);font-size:13px;font-weight:600}.student-ui-v2 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.student-list-row{display:flex;align-items:center;gap:14px;min-height:72px;padding:15px 17px;border:0;border-bottom:1px solid var(--student-border);background:transparent;color:inherit;font:inherit;text-align:left}.student-ui-v2 .student-icon-button:focus-visible,.student-ui-v2 .student-list-row:focus-visible,.student-ui-v2 .student-stat-card:focus-visible{outline:0;box-shadow:var(--student-focus-ring);outline-offset:2px}.student-ui-v2 button.student-list-row{width:100%;cursor:pointer;transition:background-color var(--student-duration-fast) var(--student-ease-standard),box-shadow var(--student-duration-fast) var(--student-ease-standard)}.student-ui-v2 button.student-list-row:hover{background:var(--student-surface-hover);box-shadow:inset 3px 0 var(--student-primary)}.student-ui-v2 button.student-list-row:active{background:var(--student-primary-soft)}.student-ui-v2 .student-list-row:last-child{border-bottom:0}.student-ui-v2 .student-list-row__icon{display:grid;flex:0 0 44px;width:44px;height:44px;place-items:center;border-radius:14px;background:var(--student-primary-soft);color:var(--student-primary)}.student-ui-v2 .student-list-row__icon.is-complete{color:var(--student-success);background:var(--student-success-soft)}.student-ui-v2 .student-list-row__content{min-width:0;flex:1}.student-ui-v2 .student-list-row__content>strong{display:block;overflow:hidden;color:var(--student-ink);font-size:15px;font-weight:750;line-height:1.4;text-overflow:ellipsis;white-space:nowrap}.student-ui-v2 .student-list-row__content>small{display:block;overflow:hidden;margin-top:3px;color:var(--student-muted);font-size:12px;font-weight:550;line-height:1.4;text-overflow:ellipsis;white-space:nowrap}.student-ui-v2 .student-list-row__title{overflow:hidden;color:var(--student-ink);font-size:15px;font-weight:750;line-height:1.4;text-overflow:ellipsis}.student-ui-v2 .student-list-row__meta{margin-top:3px;color:var(--student-muted);font-size:13px;font-weight:500;line-height:1.4}.student-ui-v2 .student-list-row__trailing{display:flex;align-items:center;gap:7px;flex:0 0 auto;color:var(--student-muted);font-size:13px;font-weight:700;text-align:right}.student-ui-v2 .student-empty-state{display:grid;min-height:230px;justify-items:center;align-content:center;padding:30px 20px;border:1px dashed var(--student-border-strong);border-radius:var(--student-radius-lg);color:var(--student-muted);background:#ffffff9e;text-align:center}.student-ui-v2 .student-empty-state--compact{min-height:140px}.student-ui-v2 .student-empty-state__icon{display:grid;width:58px;height:58px;margin-bottom:12px;place-items:center;border-radius:19px;color:var(--student-primary);background:var(--student-primary-soft);font-size:25px}.student-ui-v2 .student-empty-state h3{margin:0;color:var(--student-ink);font-size:17px;font-weight:800}.student-ui-v2 .student-empty-state 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student-class-spinner-9b516a8c{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.student-class-switcher__choice[data-v-9b516a8c],.student-class-switcher__spinner[data-v-9b516a8c]{transition:none;animation-duration:1.5s}}.el-menu-item.is-active[data-v-41f8846d]{background-color:#ecf5ff!important;color:#409eff!important}.el-header[data-v-41f8846d]{box-shadow:0 1px 4px #00152914}[data-v-41f8846d] .el-menu{border-right:none}[data-v-41f8846d] .el-drawer__header{margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid #dcdfe6}[data-v-41f8846d] .el-drawer__body{padding:0}