html,body{width:100%;height:100%}input::-ms-clear{display:none}input::-ms-reveal{display:none}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%;-ms-overflow-style:scrollbar;-webkit-tap-highlight-color:#0000;font-family:sans-serif;line-height:1.15}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]{cursor:help;border-bottom:0;-webkit-text-decoration:underline dotted;text-decoration:underline dotted}address{font-style:normal;line-height:inherit;margin-bottom:1em}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{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}pre,code,kbd,samp{font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace;font-size:1em}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{text-align:left;caption-side:bottom;padding-top:.75em;padding-bottom:.3em}input,button,select,optgroup,textarea{color:inherit;font-size:inherit;font-family:inherit;line-height:inherit;margin:0}button,input{overflow:visible}button,select{text-transform:none}button,html [type=button],[type=reset],[type=submit]{-webkit-appearance:button}button::-moz-focus-inner{border-style:none;padding:0}[type=button]::-moz-focus-inner{border-style:none;padding:0}[type=reset]::-moz-focus-inner{border-style:none;padding:0}[type=submit]::-moz-focus-inner{border-style:none;padding:0}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{resize:vertical;overflow:auto}fieldset{border:0;min-width:0;margin:0;padding:0}legend{width:100%;max-width:100%;color:inherit;font-size:1.5em;line-height:inherit;white-space:normal;margin-bottom:.5em;padding:0;display:block}progress{vertical-align:baseline}[type=number]::-webkit-inner-spin-button{height:auto}[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:none}[type=search]::-webkit-search-cancel-button{-webkit-appearance:none}[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}
:root{--na-color-bg:#fff;--na-color-surface:#f7f8fa;--na-color-surface-warm:#e6f4ff;--na-color-text:#1f1f1f;--na-color-text-secondary:#4b5563;--na-color-muted:#697386;--na-color-border:#d9dce3;--na-color-border-soft:#eef0f4;--na-color-primary:#1677ff;--na-color-primary-text:#fff;--na-color-success:#22a06b;--na-color-warning:#faad14;--na-color-danger:#cf1322;--na-color-secondary:#8b5cf6;--na-color-primary-hover:color-mix(in oklab, var(--na-color-primary), black 8%);--na-color-primary-active:color-mix(in oklab, var(--na-color-primary), black 14%);--na-color-accent-soft:color-mix(in srgb, var(--na-color-primary) 12%, transparent);--na-tracking-display:-.018em;--na-font-display:"Plus Jakarta Sans", Inter, -apple-system, BlinkMacSystemFont, sans-serif;--na-font-body:"Plus Jakarta Sans", Inter, -apple-system, BlinkMacSystemFont, sans-serif;--na-font-mono:"SF Mono", ui-monospace, Menlo, monospace;--na-text-xs:12px;--na-text-sm:14px;--na-text-base:16px;--na-text-lg:18px;--na-text-xl:22px;--na-text-2xl:32px;--na-leading-body:1.52;--na-leading-tight:1.08;--na-letter-spacing-display:0;--na-space-1:4px;--na-space-2:8px;--na-space-3:12px;--na-space-4:16px;--na-space-5:20px;--na-space-6:24px;--na-space-8:32px;--na-space-12:48px;--na-chat-tools-width:400px;--na-radius-sm:6px;--na-radius-md:10px;--na-radius-lg:16px;--na-radius-pill:9999px;--na-shadow-flat:none;--na-shadow-ring:0 0 0 1px var(--na-color-border);--na-shadow-raised:0 18px 42px #1f1f1f1a;--na-focus-ring:0 0 0 4px #1677ff38;--na-motion-fast:.14s;--na-motion-base:.22s;--na-ease-standard:cubic-bezier(.2, 0, 0, 1);--na-container-max:1200px;--na-content-max:1000px;--na-sidebar-width:240px}
html,body{min-height:100%;margin:0}body{background:var(--na-color-bg);color:var(--na-color-text);font-family:var(--na-font-body);font-size:var(--na-text-base);line-height:var(--na-leading-body)}*{box-sizing:border-box}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}h1,h2,h3,h4,h5,h6,p{margin:0}::selection{background:color-mix(in oklab, var(--na-color-primary) 20%, transparent)}
.na-page-shell{grid-template-columns:var(--na-sidebar-width) minmax(0, 1fr);min-height:100vh;display:grid}.na-main{min-width:0;padding:var(--na-space-8)}.na-main--contained{max-width:var(--na-content-max)}.na-main--wide{max-width:var(--na-container-max)}.na-sidebar{background:var(--na-color-surface);border-right:1px solid var(--na-color-border);height:100vh;padding:var(--na-space-6) 0;flex-direction:column;display:flex;position:sticky;top:0;overflow-y:auto}.na-app-shell{background:var(--na-color-bg);min-height:100vh}.na-app-shell__sider{border-right:1px solid var(--na-color-border);height:100vh;inset-block-start:0;overflow-y:auto;background:var(--na-color-surface)!important;position:sticky!important}.na-app-shell__content{background:var(--na-color-bg);box-sizing:border-box;max-width:var(--na-container-max);min-height:100vh;padding:var(--na-space-8);width:100%;margin-inline:auto}.na-app-shell__content--workspace{max-width:none;margin-inline:0;padding:0}.na-app-shell__topbar{background:var(--na-color-surface);border-bottom:1px solid var(--na-color-border);min-height:56px;padding:0 var(--na-space-6);z-index:2;justify-content:flex-end;align-items:center;display:flex;position:sticky;top:0}.na-app-shell__topbar-spacer{flex:1}.na-shell-sidebar__footer{padding:0 var(--na-space-5);margin-top:auto}.na-shell-sidebar__lang{margin-bottom:var(--na-space-4)}.na-shell-sidebar__footer .na-shell-user{margin-top:0}.na-app-shell__mobile-bar{background:var(--na-color-bg);border-bottom:1px solid var(--na-color-border);align-items:center;gap:var(--na-space-3);padding:var(--na-space-3) var(--na-space-4);display:none}.na-section{margin-bottom:var(--na-space-6)}.na-grid{gap:var(--na-space-4);display:grid}.na-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}.na-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}.na-grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}.na-grid--auto{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.na-two-column{gap:var(--na-space-6);grid-template-columns:minmax(0,1fr) 340px;display:grid}.na-split-workspace{grid-template-columns:minmax(0,1fr) 320px;min-height:100vh;display:grid}@media (max-width:1024px){.na-page-shell,.na-split-workspace{grid-template-columns:1fr}.na-sidebar,.na-app-shell__sider{display:none}.na-app-shell__mobile-bar{display:flex}.na-app-shell__topbar{display:none}.na-app-shell__content{max-width:none;min-height:calc(100vh - 65px);padding:var(--na-space-6) var(--na-space-4)}.na-main{padding:var(--na-space-6) var(--na-space-4)}}@media (max-width:768px){.na-grid--2,.na-grid--3,.na-grid--4,.na-two-column{grid-template-columns:1fr}}
.na-page-header{align-items:flex-start;gap:var(--na-space-4);margin-bottom:var(--na-space-6);justify-content:space-between;display:flex}.na-page-header__eyebrow{color:var(--na-color-muted);font-size:var(--na-text-sm);font-weight:500}.na-page-header__title{color:var(--na-color-text);font-family:var(--na-font-display);font-size:var(--na-text-2xl);letter-spacing:var(--na-letter-spacing-display);font-weight:700;line-height:var(--na-leading-tight)}.na-page-header__subtitle{color:var(--na-color-muted);font-size:var(--na-text-sm);margin-top:var(--na-space-2)}.na-card{background:var(--na-color-surface);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);transition:border-color var(--na-motion-fast) var(--na-ease-standard), box-shadow var(--na-motion-fast) var(--na-ease-standard)}.na-card:hover{border-color:color-mix(in oklab, var(--na-color-primary) 40%, transparent)}.na-action-card{border-radius:var(--na-radius-lg);min-height:148px}.na-action-panel{margin-bottom:var(--na-space-6)}.na-action-panel__header{align-items:center;gap:var(--na-space-3);margin-bottom:var(--na-space-4);justify-content:space-between;display:flex}.na-action-panel__label{color:var(--na-color-muted);font-size:var(--na-text-xs);text-transform:uppercase;font-weight:700}.na-action-panel__title.ant-typography{font-family:var(--na-font-display);font-size:var(--na-text-xl);line-height:var(--na-leading-tight);margin-bottom:var(--na-space-3)}.na-action-panel__meta{color:var(--na-color-muted);font-size:var(--na-text-sm)}.na-action-panel__meta-items span{align-items:center;gap:var(--na-space-1);display:inline-flex}.na-action-panel__progress{gap:var(--na-space-2);margin-top:var(--na-space-4);display:grid}.na-action-panel__actions{margin-top:var(--na-space-5)}.na-shell-sidebar{background:var(--na-color-surface);min-height:100%;padding:var(--na-space-6) 0;flex-direction:column;display:flex}.na-shell-brand{align-items:center;gap:var(--na-space-3);margin-bottom:var(--na-space-5);padding:0 var(--na-space-5);display:flex}.na-shell-brand__mark{background:var(--na-color-primary);border-radius:var(--na-radius-sm);color:var(--na-color-primary-text);font-size:var(--na-text-sm);justify-content:center;align-items:center;width:32px;height:32px;font-weight:700;display:inline-flex}.na-shell-brand__text{color:var(--na-color-text);font-size:var(--na-text-lg);font-weight:700}.na-shell-nav.ant-menu{background:0 0;border-inline-end:0;flex:1}.na-shell-sidebar__main{flex-direction:column;flex:1;min-height:0;display:flex}.na-shell-sidebar__main .na-shell-nav.ant-menu{flex:none}.na-shell-sidebar__extra{min-height:0;padding:0 var(--na-space-4);flex:1;display:flex}.na-shell-sidebar__extra>*{flex:1;min-height:0}.na-shell-sidebar.is-compact{padding-top:var(--na-space-5)}.na-shell-sidebar.is-compact .na-shell-brand{margin-bottom:var(--na-space-4);padding:0 var(--na-space-4)}.na-shell-sidebar.is-compact .na-shell-nav.ant-menu{font-size:13px}.na-shell-sidebar.is-compact .na-shell-nav .ant-menu-item,.na-shell-sidebar.is-compact .na-shell-nav .ant-menu-submenu-title{margin-inline:var(--na-space-3);width:calc(100% - (var(--na-space-3) * 2))}.na-shell-nav__section{color:var(--na-color-muted);text-transform:uppercase;font-size:11px;font-weight:700}.na-shell-nav__item-label{align-items:center;gap:var(--na-space-2);justify-content:space-between;display:flex}.na-shell-nav__future{color:var(--na-color-muted);margin-left:auto;font-size:11px}.na-shell-user{border:none;border-top:1px solid var(--na-color-border);cursor:pointer;align-items:center;gap:var(--na-space-3);margin-top:var(--na-space-4);padding:var(--na-space-4) var(--na-space-5) 0;text-align:left;background:0 0;width:100%;display:flex}.na-shell-user span:last-child{flex-direction:column;min-width:0;display:flex}.na-metric-card__label{color:var(--na-color-muted);font-size:var(--na-text-xs);margin-bottom:var(--na-space-1);font-weight:500}.na-metric-card__value{color:var(--na-color-text);font-family:var(--na-font-mono);font-size:var(--na-text-xl);font-variant-numeric:tabular-nums;font-weight:700;line-height:var(--na-leading-tight)}.na-metric-card__meta{color:var(--na-color-muted);margin-top:2px;font-size:11px}.na-stat-card{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);padding:var(--na-space-4) var(--na-space-5);text-align:center}.na-stat-card .na-metric-card__value.is-accent{color:var(--na-color-primary)}.na-stat-card .na-metric-card__value.is-success{color:var(--na-color-success)}.na-section-header{align-items:center;gap:var(--na-space-4);margin-bottom:var(--na-space-4);justify-content:space-between;display:flex}.na-section-header__title{color:var(--na-color-text);font-size:var(--na-text-lg);font-weight:700}.na-section-header__description{color:var(--na-color-muted);font-size:var(--na-text-sm);margin-top:var(--na-space-1)}.na-token-swatch{border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);min-height:90px;overflow:hidden}.na-token-swatch__color{height:44px}.na-token-swatch__body{background:var(--na-color-bg);padding:var(--na-space-3)}.na-token-swatch__name{color:var(--na-color-text);font-size:var(--na-text-sm);font-weight:600}.na-token-swatch__value{color:var(--na-color-muted);font-family:var(--na-font-mono);font-size:var(--na-text-xs);margin-top:2px}.na-status-dot{border-radius:var(--na-radius-pill);width:8px;height:8px;display:inline-block}.na-status-dot--ready{background:var(--na-color-success)}.na-status-dot--partial{background:var(--na-color-warning)}.na-status-dot--missing{background:var(--na-color-danger)}.na-status-dot--needs-confirmation{background:var(--na-color-secondary)}.na-list-row{background:var(--na-color-surface);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);align-items:center;gap:var(--na-space-4);padding:var(--na-space-4);display:flex}.na-list-row+.na-list-row{margin-top:var(--na-space-3)}.na-list-row__icon{border-radius:var(--na-radius-sm);flex:none;justify-content:center;align-items:center;width:36px;height:36px;display:inline-flex}.na-list-row__icon--primary{background:color-mix(in oklab, var(--na-color-primary) 12%, transparent);color:var(--na-color-primary)}.na-list-row__icon--success{background:color-mix(in oklab, var(--na-color-success) 12%, transparent);color:var(--na-color-success)}.na-list-row__icon--warning{background:color-mix(in oklab, var(--na-color-warning) 12%, transparent);color:color-mix(in oklab, var(--na-color-warning), black 20%)}.na-list-row__body{flex:1;min-width:0}.na-list-row__title{color:var(--na-color-text);font-size:var(--na-text-sm);text-overflow:ellipsis;white-space:nowrap;font-weight:700;overflow:hidden}.na-list-row__description{color:var(--na-color-muted);font-size:var(--na-text-xs);margin-top:2px}.na-list-row__meta{flex:none}.na-list-row__count{color:var(--na-color-text);font-family:var(--na-font-mono);font-size:var(--na-text-sm);font-variant-numeric:tabular-nums;font-weight:700}.na-severity-chip{background:var(--na-color-surface);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);align-items:center;gap:var(--na-space-3);min-height:46px;padding:var(--na-space-3) var(--na-space-4);display:flex}.na-severity-chip__dot{border-radius:var(--na-radius-pill);flex:none;width:8px;height:8px}.na-severity-chip__dot--high{background:var(--na-color-danger)}.na-severity-chip__dot--medium{background:var(--na-color-warning)}.na-severity-chip__dot--low{background:var(--na-color-success)}.na-severity-chip__label{color:var(--na-color-text);font-size:var(--na-text-sm);flex:1;min-width:0}.na-severity-chip__meta{color:var(--na-color-muted);font-family:var(--na-font-mono);font-size:var(--na-text-xs);flex:none}.na-card-list{gap:var(--na-space-3);display:grid}.na-full-width{width:100%}.reset-shell{min-height:100vh;padding:var(--na-space-8);align-items:center;display:flex}.reset-card{width:100%;max-width:760px}.na-tab-badge{margin-inline-start:var(--na-space-1)}.na-topic-list{gap:var(--na-space-3);display:grid}.na-plan-section{border-top:1px solid var(--na-color-border-soft);margin-top:var(--na-space-4);padding-top:var(--na-space-4)}.na-plan-section__label{margin-bottom:var(--na-space-2);display:block}.na-plan-section__list{margin:var(--na-space-2) 0 0;padding-left:var(--na-space-5)}.na-pack-stats{gap:var(--na-space-4);margin:var(--na-space-3) 0;grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.na-shell-nav a{color:inherit;text-decoration:none}.na-topic-select-grid{gap:var(--na-space-3);margin-bottom:var(--na-space-4);grid-template-columns:repeat(auto-fill,minmax(200px,1fr));display:grid}.na-topic-select-item{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);cursor:pointer;padding:var(--na-space-4);text-align:left;transition:border-color var(--na-motion-fast) var(--na-ease-standard), box-shadow var(--na-motion-fast) var(--na-ease-standard), background var(--na-motion-fast) var(--na-ease-standard)}.na-topic-select-item:hover{border-color:color-mix(in oklab, var(--na-color-primary) 50%, transparent)}.na-topic-select-item.is-selected{background:var(--na-color-surface-warm);border-color:var(--na-color-primary);box-shadow:0 0 0 1px color-mix(in oklab, var(--na-color-primary) 16%, transparent)}.na-topic-select-item__name{font-size:var(--na-text-sm);margin-bottom:2px;font-weight:600;display:block}.na-topic-select-item__meta{color:var(--na-color-muted);font-size:11px;display:block}.na-recent-list{background:var(--na-color-surface);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);overflow:hidden}.na-stats-strip{gap:var(--na-space-4);margin-bottom:var(--na-space-6);grid-template-columns:repeat(auto-fit,minmax(200px,1fr));display:grid}.na-notes-block{border-bottom:1px solid var(--na-color-border-soft);gap:var(--na-space-3);margin-bottom:var(--na-space-5);padding-bottom:var(--na-space-5);display:grid}.na-notes-block:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.na-notes-block__heading{align-items:center;gap:var(--na-space-3);display:flex}.na-notes-block__num{background:var(--na-color-surface-warm);border-radius:var(--na-radius-pill);color:var(--na-color-primary);font-family:var(--na-font-mono);font-size:var(--na-text-xs);padding:2px 8px;font-weight:700}.na-notes-block__example{background:var(--na-color-surface-muted);border-radius:var(--na-radius-sm);padding:var(--na-space-3)}.na-notes-block__example-label{font-size:var(--na-text-xs);margin-bottom:var(--na-space-2);display:block}.na-card-list a{color:inherit;text-decoration:none;display:block}.na-login-page{min-height:100vh;padding:var(--na-space-8);justify-content:center;align-items:center;display:flex}.na-login-card{width:100%;max-width:420px}.na-login-card__top{margin-bottom:var(--na-space-5);justify-content:space-between;display:flex}.na-login-card__hint{margin-top:var(--na-space-5)}.na-auth-gate{justify-content:center;align-items:center;min-height:40vh;display:flex}.na-student-step-back{color:var(--na-color-muted);cursor:pointer;font-size:var(--na-text-sm);align-items:center;gap:var(--na-space-2);margin-bottom:var(--na-space-6);padding:var(--na-space-2) var(--na-space-3);background:0 0;border:none;font-weight:500;text-decoration:none;display:inline-flex}.na-student-step-back:hover{background:var(--na-color-surface);color:var(--na-color-text)}.na-subject-pills__item{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-pill);color:var(--na-color-text-secondary);cursor:pointer;font-size:var(--na-text-sm);padding:var(--na-space-2) var(--na-space-4);transition:all var(--na-motion-fast) var(--na-ease-standard);align-items:center;gap:6px;font-weight:500;display:inline-flex}.na-subject-pills__item:hover{border-color:var(--na-color-primary);color:var(--na-color-primary)}.na-subject-pills__item.is-active{background:var(--na-color-primary);border-color:var(--na-color-primary);color:var(--na-color-primary-text)}.na-subject-pills__count{background:var(--na-color-border-soft);border-radius:var(--na-radius-pill);color:var(--na-color-muted);padding:1px 6px;font-size:11px;font-weight:600}.na-subject-pills__item.is-active .na-subject-pills__count{background:color-mix(in srgb, var(--na-color-primary-text) 25%, transparent);color:var(--na-color-primary-text)}.na-student-flow-page__tags,.na-admin-flow-page__tags,.na-teacher-flow-page__tags{gap:var(--na-space-2);margin-bottom:var(--na-space-4);flex-wrap:wrap;justify-content:flex-end;display:flex}
.na-teaching-stepper{align-items:center;gap:var(--na-space-2);margin-bottom:var(--na-space-6);flex-wrap:wrap;display:flex}.na-teaching-stepper__step,.na-teaching-stepper__step.is-link{color:inherit;align-items:center;gap:var(--na-space-2);text-decoration:none;display:inline-flex}.na-teaching-stepper__node{border:1px solid var(--na-color-border);border-radius:var(--na-radius-pill);font-size:var(--na-text-xs);place-items:center;width:28px;height:28px;font-weight:700;display:inline-grid}.na-teaching-stepper__node--completed,.na-teaching-stepper__node--active{background:var(--na-color-primary);border-color:var(--na-color-primary);color:#fff}.na-teaching-stepper__node--disabled,.na-teaching-stepper__step--disabled{color:var(--na-color-muted);opacity:.55}.na-teaching-stepper__connector{background:var(--na-color-border);flex:0 0 24px;height:2px}.na-teaching-stepper__connector.is-done{background:var(--na-color-success)}.na-teaching-stepper__label{font-size:var(--na-text-sm)}.na-chat-message{gap:var(--na-space-3);display:flex}.na-chat-message--teacher{flex-direction:row-reverse}.na-chat-message__bubble{background:var(--na-color-surface);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);max-width:min(720px,85%);padding:var(--na-space-3) var(--na-space-4)}.na-chat-message--teacher .na-chat-message__bubble{background:color-mix(in oklab, var(--na-color-primary) 10%, white);border-color:color-mix(in oklab, var(--na-color-primary) 22%, transparent)}.na-status-badge{border-radius:var(--na-radius-pill);font-size:var(--na-text-xs);padding:var(--na-space-1) var(--na-space-3);white-space:nowrap;align-items:center;gap:4px;font-weight:600;display:inline-flex}.na-status-badge--published{background:color-mix(in oklab, var(--na-color-success) 10%, transparent);color:var(--na-color-success)}.na-status-badge--draft{background:color-mix(in oklab, var(--na-color-warning) 12%, transparent);color:color-mix(in oklab, var(--na-color-warning), black 10%)}.na-tab-nav{border-bottom:1px solid var(--na-color-border);gap:var(--na-space-1);margin-bottom:var(--na-space-6);flex-wrap:wrap;display:flex}.na-tab-nav__item{color:var(--na-color-muted);cursor:pointer;font-family:var(--na-font-body);font-size:var(--na-text-sm);align-items:center;gap:var(--na-space-2);padding:var(--na-space-3) var(--na-space-4);transition:border-color var(--na-motion-fast) var(--na-ease-standard), color var(--na-motion-fast) var(--na-ease-standard);background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-1px;font-weight:500;display:inline-flex}.na-tab-nav__item:hover{color:var(--na-color-text)}.na-tab-nav__item.is-active{border-bottom-color:var(--na-color-primary);color:var(--na-color-primary);font-weight:600}.na-tab-nav__badge{background:var(--na-color-surface);border-radius:var(--na-radius-pill);color:var(--na-color-muted);font-size:var(--na-text-xs);font-variant-numeric:tabular-nums;padding:1px 7px;font-weight:600}.na-tab-nav__item.is-active .na-tab-nav__badge{background:var(--na-color-surface-warm);color:var(--na-color-primary)}.na-rag-status-badge{border-radius:var(--na-radius-pill);font-size:var(--na-text-xs);align-items:center;gap:var(--na-space-1);padding:2px 10px;font-weight:600;display:inline-flex}.na-rag-status-badge:before{content:"";border-radius:50%;flex-shrink:0;width:6px;height:6px}.na-rag-status-badge.is-active{background:color-mix(in srgb, var(--na-color-success) 12%, transparent);color:var(--na-color-success)}.na-rag-status-badge.is-active:before{background:var(--na-color-success)}.na-rag-status-badge.is-processing{background:color-mix(in srgb, var(--na-color-warning) 14%, transparent);color:var(--na-color-warning)}.na-rag-status-badge.is-processing:before{background:var(--na-color-warning)}.na-rag-status-badge.is-queued{background:color-mix(in srgb, var(--na-color-muted) 10%, transparent);color:var(--na-color-muted)}.na-rag-status-badge.is-queued:before{background:var(--na-color-muted)}.na-rag-status-badge.is-inactive{background:color-mix(in srgb, var(--na-color-muted) 12%, transparent);color:var(--na-color-muted)}.na-rag-status-badge.is-inactive:before{background:var(--na-color-muted)}.na-subject-picker-step{min-height:calc(100vh - 64px);padding:var(--na-space-8);justify-content:center;align-items:center;display:flex}.na-subject-picker-step__inner{width:100%;max-width:640px}.na-subject-picker__back{color:var(--na-color-muted);cursor:pointer;font-size:var(--na-text-sm);align-items:center;gap:var(--na-space-2);margin-bottom:var(--na-space-6);padding:var(--na-space-2) var(--na-space-3);background:0 0;border:none;font-weight:500;display:inline-flex}.na-subject-picker__back:hover{background:var(--na-color-surface);color:var(--na-color-text)}.na-subject-picker__heading{font-size:var(--na-text-2xl);letter-spacing:var(--na-tracking-display);font-weight:700;line-height:var(--na-leading-tight);margin-bottom:var(--na-space-2)}.na-subject-picker__sub{color:var(--na-color-muted);font-size:var(--na-text-base);margin-bottom:var(--na-space-8)}.na-subject-picker__grid{gap:var(--na-space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.na-subject-picker__card{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-lg);cursor:pointer;gap:var(--na-space-4);padding:var(--na-space-6);text-align:left;transition:border-color var(--na-motion-fast) var(--na-ease-standard), box-shadow var(--na-motion-fast) var(--na-ease-standard), transform var(--na-motion-fast) var(--na-ease-standard);flex-direction:column;display:flex}.na-subject-picker__card:hover{border-color:var(--na-color-primary);transform:translateY(-1px);box-shadow:0 2px 12px #1677ff1a}.na-subject-picker__icon{border-radius:var(--na-radius-md);font-size:var(--na-text-lg);place-items:center;width:44px;height:44px;font-weight:700;display:grid}.na-subject-picker__icon.is-chinese{color:#cf1322;background:#cf13221a}.na-subject-picker__icon.is-english{background:color-mix(in srgb, var(--na-color-primary) 10%, transparent);color:var(--na-color-primary)}.na-subject-picker__icon.is-math{background:color-mix(in srgb, var(--na-color-success) 10%, transparent);color:var(--na-color-success)}.na-subject-picker__icon.is-liberal{background:color-mix(in srgb, var(--na-color-secondary) 10%, transparent);color:var(--na-color-secondary)}.na-subject-picker__name{font-size:var(--na-text-lg);letter-spacing:var(--na-tracking-display);font-weight:700}.na-subject-picker__meta{color:var(--na-color-muted);font-size:var(--na-text-sm)}.na-subject-picker__topics{gap:var(--na-space-2);flex-direction:column;display:flex}.na-subject-picker__topic{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);cursor:pointer;align-items:center;gap:var(--na-space-3);padding:var(--na-space-4) var(--na-space-5);text-align:left;transition:background var(--na-motion-fast) var(--na-ease-standard), border-color var(--na-motion-fast) var(--na-ease-standard), color var(--na-motion-fast) var(--na-ease-standard);justify-content:space-between;display:flex}.na-subject-picker__topic:hover{background:var(--na-color-surface-warm);border-color:var(--na-color-primary);color:var(--na-color-primary)}.na-subject-picker__topic-title{font-size:var(--na-text-sm);font-weight:600}.na-subject-picker__topic-meta{color:var(--na-color-muted);font-size:var(--na-text-xs);margin-top:2px}.na-subject-picker__topic-arrow{color:var(--na-color-border);font-size:12px}.na-subject-picker__topic:hover .na-subject-picker__topic-arrow{color:var(--na-color-primary)}.na-subject-picker__desc{color:var(--na-color-text-secondary);font-size:var(--na-text-sm);margin-top:var(--na-space-3);line-height:1.55}.na-subject-picker-step__inner--wide{max-width:780px}.na-subject-picker-step__inner--narrow{max-width:680px}.na-subject-picker__grid--wide{gap:var(--na-space-5)}.na-subject-picker__grid--wide .na-subject-picker__card{position:relative}.na-tone-dot{border-radius:50%;flex-shrink:0;width:8px;height:8px}.na-tone-dot.is-chinese{background:var(--na-color-primary)}.na-tone-dot.is-english{background:var(--na-color-success)}.na-tone-dot.is-math{background:var(--na-color-secondary)}.na-tone-dot.is-liberal{background:var(--na-color-warning)}
.na-chat-workspace{flex-direction:column;height:calc(100vh - 57px);min-height:0;display:flex;overflow:hidden}.na-chat-workspace__main{grid-template-columns:minmax(0, 1fr) var(--na-chat-tools-width);flex:1;min-height:0;display:grid;overflow:hidden}.na-chat-workspace__main.is-resizable{grid-template-columns:minmax(0, 1fr) 14px minmax(320px, var(--na-chat-tools-width,360px))}.na-chat-workspace__chat-column{flex-direction:column;min-width:0;min-height:0;display:flex;overflow:hidden}.na-chat-workspace__header{background:var(--na-color-bg);border-bottom:1px solid var(--na-color-border);align-items:center;gap:var(--na-space-4);padding:var(--na-space-4) var(--na-space-6);flex-shrink:0;display:flex}.na-chat-workspace__back{border-radius:var(--na-radius-sm);color:var(--na-color-muted);height:32px;transition:background var(--na-motion-fast) var(--na-ease-standard);place-items:center;width:32px;display:grid}.na-chat-workspace__back:hover{background:var(--na-color-surface);color:var(--na-color-text)}.na-chat-workspace__title{font-size:var(--na-text-lg);letter-spacing:var(--na-tracking-display);flex:1;font-weight:700}.na-chat-workspace__sub{color:var(--na-color-muted);font-size:var(--na-text-xs);margin-top:1px}.na-chat-workspace__switch{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-pill);color:var(--na-color-text-secondary);cursor:pointer;font-size:var(--na-text-sm);align-items:center;gap:var(--na-space-2);padding:var(--na-space-2) var(--na-space-4);display:inline-flex}.na-chat-workspace__switch:hover{border-color:var(--na-color-primary);color:var(--na-color-primary)}.na-chat-workspace__messages{min-height:0;padding:var(--na-space-6);flex:1;overflow-y:auto}.na-chat-workspace .na-tools-panel{height:100%;min-height:0;overflow:hidden}.na-chat-workspace__tools-column{min-height:0;overflow:hidden}.na-chat-workspace__splitter{cursor:col-resize;touch-action:none;min-height:0;position:relative}.na-chat-workspace__splitter:before{background:var(--na-color-border);border-radius:var(--na-radius-pill);content:"";height:84px;transition:background var(--na-motion-fast) var(--na-ease-standard), box-shadow var(--na-motion-fast) var(--na-ease-standard);width:4px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.na-chat-workspace__splitter:hover:before,.na-chat-workspace__splitter:focus-visible:before{background:var(--na-color-primary);box-shadow:0 0 0 4px color-mix(in srgb, var(--na-color-primary) 14%, transparent)}.na-chat-workspace__splitter:focus-visible{outline:none}.na-chat-workspace__composer{background:var(--na-color-bg);border-top:1px solid var(--na-color-border);padding:var(--na-space-4) var(--na-space-6);flex-shrink:0}.na-chat-workspace__composer-wrap{background:var(--na-color-surface);border:1px solid var(--na-color-border);border-radius:var(--na-radius-lg);align-items:center;gap:var(--na-space-3);padding:var(--na-space-3) var(--na-space-4);transition:border-color var(--na-motion-fast) var(--na-ease-standard), box-shadow var(--na-motion-fast) var(--na-ease-standard);display:flex}.na-chat-workspace__composer-wrap:focus-within{background:var(--na-color-bg);border-color:var(--na-color-primary);box-shadow:var(--na-focus-ring)}.na-chat-workspace__input{color:var(--na-color-text);font-family:var(--na-font-body);font-size:var(--na-text-sm);background:0 0;border:none;outline:none;flex:1;line-height:1.5}.na-chat-workspace__input::placeholder{color:var(--na-color-muted)}.na-chat-workspace__send{background:var(--na-color-primary);color:var(--na-color-primary-text);cursor:pointer;height:32px;transition:background var(--na-motion-fast) var(--na-ease-standard);border:none;border-radius:50%;flex-shrink:0;place-items:center;width:32px;display:grid}.na-chat-workspace__send:hover{background:var(--na-color-primary-hover)}.na-chat-workspace__hint{color:var(--na-color-muted);margin-top:var(--na-space-2);text-align:center;font-size:11px}.na-chat-messages{gap:var(--na-space-5);flex-direction:column;display:flex}.na-chat-messages__row{gap:var(--na-space-3);max-width:720px;display:flex}.na-chat-messages__row.is-user{flex-direction:row-reverse;margin-left:auto}.na-chat-messages__avatar{border-radius:50%;flex-shrink:0;place-items:center;width:32px;height:32px;font-size:11px;font-weight:700;display:grid}.na-chat-messages__avatar.is-assistant{background:var(--na-color-surface-warm);color:var(--na-color-primary)}.na-chat-messages__avatar.is-user{background:var(--na-color-border-soft);color:var(--na-color-text-secondary)}.na-chat-messages__bubble{border-radius:var(--na-radius-lg);font-size:var(--na-text-sm);padding:var(--na-space-4) var(--na-space-5);line-height:1.6}.na-chat-messages__row.is-assistant .na-chat-messages__bubble{background:var(--na-color-bg);border:1px solid var(--na-color-border);color:var(--na-color-text);overflow-x:auto}.na-chat-messages__row.is-user .na-chat-messages__bubble{background:var(--na-color-primary);color:var(--na-color-primary-text)}.na-chat-messages__bubble p{margin-bottom:var(--na-space-3)}.na-chat-messages__bubble p:last-child{margin-bottom:0}.learning-resource-renderer{color:var(--na-color-text);font-size:var(--na-text-sm);overflow-wrap:anywhere;min-width:0;max-width:100%;line-height:1.72}.learning-resource-renderer *{max-width:100%}.learning-resource-renderer h1,.learning-resource-renderer h2,.learning-resource-renderer h3{color:var(--na-color-text);margin:var(--na-space-5) 0 var(--na-space-3);line-height:1.3}.learning-resource-renderer h1:first-child,.learning-resource-renderer h2:first-child,.learning-resource-renderer h3:first-child,.learning-resource-renderer p:first-child,.learning-resource-renderer ul:first-child,.learning-resource-renderer ol:first-child,.learning-resource-renderer table:first-child{margin-top:0}.learning-resource-renderer h1{font-size:var(--na-text-xl)}.learning-resource-renderer h2{font-size:var(--na-text-lg)}.learning-resource-renderer h3{font-size:var(--na-text-md)}.learning-resource-renderer p,.learning-resource-renderer ul,.learning-resource-renderer ol,.learning-resource-renderer table,.learning-resource-renderer blockquote{margin:var(--na-space-3) 0;overflow-wrap:anywhere;word-break:break-word}.learning-resource-renderer ul,.learning-resource-renderer ol{padding-left:var(--na-space-6)}.learning-resource-renderer table{border-collapse:collapse;background:var(--na-color-surface);width:100%;display:block;overflow-x:auto}.learning-resource-renderer th,.learning-resource-renderer td{border:1px solid var(--na-color-border);padding:var(--na-space-2) var(--na-space-3);text-align:left;vertical-align:top}.learning-resource-renderer th{background:var(--na-color-surface);font-weight:650}.learning-resource-renderer :not(pre)>code{border-radius:var(--na-radius-sm);background:var(--na-color-surface);color:var(--na-color-danger);padding:2px 5px;font-size:.92em}.learning-resource-renderer pre{border-radius:var(--na-radius-md);border:1px solid var(--na-color-border);background:var(--na-color-surface);padding:var(--na-space-4);overflow:auto}.learning-resource-renderer blockquote{border-left:4px solid var(--na-color-primary);color:var(--na-color-muted);padding:var(--na-space-1) 0 var(--na-space-1) var(--na-space-4)}.learning-resource-renderer a{color:var(--na-color-primary)}.learning-resource-renderer .katex-display{padding:var(--na-space-2) 0;overflow:auto hidden}.learning-resource-renderer__mathgraph{margin:var(--na-space-5) 0;border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);background:var(--na-color-surface);padding:var(--na-space-4)}.learning-resource-renderer__mathgraph figcaption{margin-bottom:var(--na-space-3);color:var(--na-color-text);font-size:var(--na-text-md);font-weight:650}.learning-resource-renderer__mathgraph-scroll{width:100%;overflow-x:auto}.na-chat-messages__actions{gap:var(--na-space-2);margin-top:var(--na-space-3);flex-wrap:wrap;display:flex}.na-chat-messages__action{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-pill);color:var(--na-color-text-secondary);cursor:pointer;padding:var(--na-space-1) var(--na-space-3);transition:border-color var(--na-motion-fast) var(--na-ease-standard), color var(--na-motion-fast) var(--na-ease-standard);font-size:11px;font-weight:500}.na-chat-messages__action:hover{border-color:var(--na-color-primary);color:var(--na-color-primary)}.na-tools-panel{background:var(--na-color-bg);border-left:1px solid var(--na-color-border);flex-direction:column;display:flex;overflow:hidden}.na-tools-panel__tabs{border-bottom:1px solid var(--na-color-border);flex-shrink:0;display:flex}.na-tools-panel__tab{color:var(--na-color-muted);cursor:pointer;font-family:var(--na-font-body);font-size:var(--na-text-xs);padding:var(--na-space-3) var(--na-space-2);text-align:center;transition:border-color var(--na-motion-fast) var(--na-ease-standard), color var(--na-motion-fast) var(--na-ease-standard);background:0 0;border:none;border-bottom:2px solid #0000;flex:1;font-weight:600}.na-tools-panel__tab:hover{color:var(--na-color-text-secondary)}.na-tools-panel__tab.is-active{border-bottom-color:var(--na-color-primary);color:var(--na-color-primary)}.na-tools-panel__body{flex:1;overflow-y:auto}.na-tools-panel__section{padding:var(--na-space-5)}.na-tools-panel__section-title{font-size:var(--na-text-sm);align-items:center;gap:var(--na-space-2);margin-bottom:var(--na-space-4);font-weight:700;display:flex}.na-tools-panel__notes-list{gap:var(--na-space-3);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.na-tools-panel__notes-list li{color:var(--na-color-text-secondary);font-size:var(--na-text-sm);padding-left:var(--na-space-5);line-height:1.55;position:relative}.na-tools-panel__notes-list li:before{background:var(--na-color-primary);content:"";border-radius:50%;width:6px;height:6px;position:absolute;top:8px;left:0}.na-tools-panel__notes-meta{border-top:1px solid var(--na-color-border-soft);color:var(--na-color-muted);margin-top:var(--na-space-5);padding-top:var(--na-space-4);font-size:11px}.na-tools-panel__resource-list{gap:var(--na-space-4);flex-direction:column;display:flex}.na-tools-panel__resource-card{border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);background:var(--na-color-bg);padding:var(--na-space-4)}.na-tools-panel__resource-card h3{font-size:var(--na-text-sm);margin:0 0 var(--na-space-3)}.na-tools-panel__empty{color:var(--na-color-muted);font-size:var(--na-text-sm);line-height:1.55}.na-tools-panel__flashcard-list{gap:var(--na-space-3);flex-direction:column;display:flex}.na-tools-panel__flashcard-deck-list{gap:var(--na-space-4);flex-direction:column;display:flex}.na-tools-panel__flashcard-deck{background:var(--na-color-bg);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);color:inherit;padding:var(--na-space-4);text-decoration:none;display:block}.na-tools-panel__flashcard-deck:hover{border-color:color-mix(in srgb, var(--na-color-primary) 38%, transparent)}.na-tools-panel__flashcard-deck[aria-disabled=true]{cursor:default;opacity:.78}.na-tools-panel__flashcard-deck-head{align-items:flex-start;gap:var(--na-space-3);margin-bottom:var(--na-space-3);justify-content:space-between;display:flex}.na-tools-panel__flashcard{background:var(--na-color-surface);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);padding:var(--na-space-4)}.na-tools-panel__flashcard-term{font-size:var(--na-text-sm);margin-bottom:var(--na-space-1);font-weight:700}.na-tools-panel__flashcard-def{color:var(--na-color-text-secondary);font-size:var(--na-text-xs);line-height:1.5}.na-tools-panel__quiz-banner{background:var(--na-color-surface-warm);border-bottom:1px solid var(--na-color-border-soft);cursor:pointer;align-items:center;gap:var(--na-space-2);padding:var(--na-space-3) var(--na-space-4);display:flex}.na-tools-panel__quiz-banner-dot{background:var(--na-color-primary);border-radius:50%;flex-shrink:0;width:8px;height:8px}.na-tools-panel__quiz-banner-badge{background:var(--na-color-danger);border-radius:var(--na-radius-pill);color:#fff;margin-left:auto;padding:1px 6px;font-size:10px;font-weight:700}.na-tools-panel__quiz-label{color:var(--na-color-muted);letter-spacing:.04em;margin:var(--na-space-4) var(--na-space-5) var(--na-space-2);text-transform:uppercase;font-size:11px;font-weight:600}.na-tools-panel__refresh-row{border-bottom:1px solid var(--na-color-border-soft);color:var(--na-color-muted);font-size:var(--na-text-xs);align-items:center;gap:var(--na-space-2);margin:0 var(--na-space-4) var(--na-space-3);min-height:36px;padding-bottom:var(--na-space-2);justify-content:space-between;display:flex}.na-tools-panel__refresh-row span{overflow-wrap:anywhere;min-width:0}.na-tools-panel__quiz-list{gap:var(--na-space-2);padding:0 var(--na-space-4) var(--na-space-4);flex-direction:column;display:flex}.na-tools-panel__quiz-item{background:var(--na-color-bg);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);align-items:center;gap:var(--na-space-3);padding:var(--na-space-3) var(--na-space-4);display:flex}.na-tools-panel__quiz-title{font-size:var(--na-text-sm);font-weight:600}.na-tools-panel__quiz-meta{color:var(--na-color-muted);margin-top:2px;font-size:11px}.na-tools-panel__quiz-badge{border-radius:var(--na-radius-pill);flex-shrink:0;padding:2px 8px;font-size:10px;font-weight:600}.na-tools-panel__quiz-badge.is-teacher{background:color-mix(in srgb, var(--na-color-primary) 12%, transparent);color:var(--na-color-primary)}.na-tools-panel__quiz-badge.is-self{background:color-mix(in srgb, var(--na-color-secondary) 12%, transparent);color:var(--na-color-secondary)}.na-tools-panel__quiz-status{border-radius:var(--na-radius-sm);flex-shrink:0;padding:2px 8px;font-size:11px;font-weight:600}.na-tools-panel__quiz-status.is-not-started{background:var(--na-color-surface);color:var(--na-color-muted)}.na-tools-panel__quiz-status.is-submitted,.na-tools-panel__quiz-status.is-completed,.na-tools-panel__quiz-status.is-graded{background:color-mix(in srgb, var(--na-color-success) 10%, transparent);color:var(--na-color-success)}.na-tools-panel__footer{border-top:1px solid var(--na-color-border-soft);align-items:center;gap:var(--na-space-3);padding:var(--na-space-4) var(--na-space-5);flex-wrap:wrap;flex-shrink:0;display:flex}.na-tools-panel__gen-btn{background:var(--na-color-primary);border-radius:var(--na-radius-md);color:var(--na-color-primary-text);cursor:pointer;font-family:var(--na-font-body);font-size:var(--na-text-sm);align-items:center;gap:var(--na-space-2);padding:var(--na-space-2) var(--na-space-4);border:none;flex:1;justify-content:center;font-weight:600;display:inline-flex}.na-tools-panel__gen-count{color:var(--na-color-muted);font-size:var(--na-text-xs);font-variant-numeric:tabular-nums}.na-tools-panel__count-field{color:var(--na-color-muted);font-size:var(--na-text-xs);align-items:center;gap:var(--na-space-2);display:inline-flex}.na-chat-workspace .na-chat-workspace__tools-trigger{display:none}.na-recent-item__disabled{color:var(--na-color-muted);font-size:var(--na-text-xs);font-weight:600}.na-tree-split{background:var(--na-color-bg);border-radius:var(--na-radius-md);box-shadow:var(--na-shadow-ring);grid-template-columns:260px minmax(0,1fr);min-height:min(560px,70vh);display:grid;overflow:hidden}.na-tree-split__tree{border-right:1px solid var(--na-color-border);max-height:680px;overflow-y:auto}.na-tree-split__tree-head{border-bottom:1px solid var(--na-color-border-soft);color:var(--na-color-muted);font-size:var(--na-text-xs);letter-spacing:.06em;padding:var(--na-space-4) var(--na-space-5);text-transform:uppercase;justify-content:space-between;align-items:center;font-weight:600;display:flex}.na-tree-split__search{border-bottom:1px solid var(--na-color-border-soft);padding:var(--na-space-3) var(--na-space-4)}.na-tree-split__leaf,.na-tree-split__node-head{color:var(--na-color-text-secondary);cursor:pointer;font-family:var(--na-font-body);font-size:var(--na-text-sm);align-items:center;gap:var(--na-space-2);padding:var(--na-space-2) var(--na-space-4);text-align:left;transition:background var(--na-motion-fast) var(--na-ease-standard), color var(--na-motion-fast) var(--na-ease-standard);background:0 0;border:none;width:100%;display:flex}.na-tree-split__leaf:hover,.na-tree-split__node-head:hover{background:var(--na-color-surface)}.na-tree-split__leaf.is-active{background:var(--na-color-surface-warm);color:var(--na-color-primary);font-weight:600}.na-tree-split__chevron{color:var(--na-color-muted);transition:transform var(--na-motion-fast) var(--na-ease-standard);flex-shrink:0;font-size:10px}.na-tree-split__node.is-expanded .na-tree-split__chevron{transform:rotate(90deg)}.na-tree-split__node-dot,.na-tree-split__leaf-dot{border-radius:50%;flex-shrink:0;width:8px;height:8px}.na-tree-split__leaf-dot{background:var(--na-color-border)}.na-tree-split__leaf.is-active .na-tree-split__leaf-dot{background:var(--na-color-primary)}.na-tree-split__node-label{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.na-tree-split__count{color:var(--na-color-muted);font-family:var(--na-font-mono);flex-shrink:0;font-size:11px}.na-tree-split__children{padding-left:var(--na-space-5)}.na-tree-split__content{flex-direction:column;display:flex}.na-tree-split__toolbar{border-bottom:1px solid var(--na-color-border-soft);align-items:center;gap:var(--na-space-3);padding:var(--na-space-4) var(--na-space-5);flex-wrap:wrap;display:flex}.na-tree-split__breadcrumb{color:var(--na-color-muted);font-size:var(--na-text-sm);align-items:center;gap:var(--na-space-2);flex:1;min-width:0;display:flex}.na-tree-split__breadcrumb strong{color:var(--na-color-text);font-weight:600}.na-tree-split__filter-pill{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-pill);color:var(--na-color-text-secondary);cursor:pointer;font-size:var(--na-text-xs);align-items:center;gap:var(--na-space-1);padding:var(--na-space-1) var(--na-space-3);font-weight:500;display:inline-flex}.na-tree-split__filter-pill:hover{border-color:var(--na-color-primary);color:var(--na-color-primary)}.na-tree-split__body{padding:var(--na-space-5);flex:1;overflow-y:auto}
.na-teacher-home__header{align-items:flex-start;gap:var(--na-space-4);margin-bottom:var(--na-space-6);justify-content:space-between;display:flex}.na-teacher-home__header h1.ant-typography{font-family:var(--na-font-display);font-size:var(--na-text-2xl);line-height:var(--na-leading-tight);margin:var(--na-space-2) 0}.na-marking-queue{background:var(--na-color-surface);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);overflow:hidden}.na-marking-queue .na-list-row{border-bottom:1px solid var(--na-color-border-soft);border-radius:0}.na-marking-queue .na-list-row:last-child{border-bottom:none}.na-teacher-home__grid{gap:var(--na-space-6);grid-template-columns:minmax(0,1fr) minmax(320px,.85fr);display:grid}.na-pack-card__subject{color:var(--na-color-muted);margin-bottom:var(--na-space-2);text-transform:uppercase;font-size:11px;font-weight:700;display:block}.na-pack-card__footer{align-items:center;gap:var(--na-space-3);margin-top:var(--na-space-4);justify-content:space-between;display:flex}.na-severity-grid{gap:var(--na-space-3);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.na-teacher-home__backend-note{align-items:center;gap:var(--na-space-2);margin-top:var(--na-space-2);display:inline-flex}.na-app-shell__content--workspace .na-teacher-flow-page__tags{padding:var(--na-space-3) var(--na-space-6) 0;margin-bottom:0}.na-lesson-topics-list{gap:var(--na-space-3);margin:0;padding:0;list-style:none;display:grid}.na-lesson-topics-list__row{background:var(--na-color-surface);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-sm);align-items:center;gap:var(--na-space-4);padding:var(--na-space-4);flex-wrap:wrap;justify-content:space-between;display:flex}.na-lesson-topics-list__main{gap:var(--na-space-2);display:grid}.na-lesson-topics-list__course{font-size:var(--na-text-sm)}
.na-course-switcher.ant-btn{align-items:center;gap:var(--na-space-3);height:auto;margin:0 var(--na-space-4) var(--na-space-4);padding:var(--na-space-3) var(--na-space-4);text-align:left;width:calc(100% - var(--na-space-8));justify-content:flex-start;display:flex}.na-course-switcher__text,.na-course-menu-item span{flex-direction:column;flex:1;min-width:0;display:flex}.na-course-switcher__name,.na-course-menu-item__name{color:var(--na-color-text);font-size:var(--na-text-sm);text-overflow:ellipsis;white-space:nowrap;font-weight:700;line-height:1.25;overflow:hidden}.na-course-switcher__meta,.na-course-menu-item__meta{color:var(--na-color-muted);font-size:11px}.na-course-switcher__icon{color:var(--na-color-muted);flex:none}.na-course-dot{border-radius:var(--na-radius-pill);flex:none;width:10px;height:10px;display:inline-block}.na-course-dot.is-primary{background:var(--na-color-primary)}.na-course-dot.is-success{background:var(--na-color-success)}.na-course-dot.is-secondary{background:var(--na-color-secondary)}.na-course-dot.is-warning{background:var(--na-color-warning)}.na-course-menu-item{align-items:center;gap:var(--na-space-3);min-width:180px;display:flex}.na-course-card-grid{gap:var(--na-space-4);grid-template-columns:repeat(auto-fit,minmax(200px,1fr));display:grid}.na-course-card{min-height:188px}.na-course-card.is-active{border-color:var(--na-color-primary);box-shadow:0 0 0 1px color-mix(in oklab, var(--na-color-primary) 18%, transparent)}.na-course-card__badge{border-radius:var(--na-radius-pill);padding:2px 8px;font-size:11px;font-weight:600}.na-course-card__badge.is-todo{background:var(--na-color-surface-warm);color:var(--na-color-primary)}.na-course-card__badge.is-done{background:color-mix(in srgb, var(--na-color-success) 12%, transparent);color:var(--na-color-success)}.na-course-card__top{margin-bottom:var(--na-space-3);justify-content:space-between;align-items:center;display:flex}.na-course-card h3.ant-typography,.na-pack-card h3.ant-typography{font-size:var(--na-text-base);margin:0 0 var(--na-space-1);line-height:1.3}.na-course-card__stats{border-bottom:1px solid var(--na-color-border-soft);color:var(--na-color-muted);font-size:var(--na-text-xs);gap:var(--na-space-4);margin:var(--na-space-3) 0;padding-bottom:var(--na-space-3);display:flex}.na-course-card__stats strong{color:var(--na-color-text);font-family:var(--na-font-mono);font-variant-numeric:tabular-nums}.na-course-card__recent{color:var(--na-color-text-secondary);font-size:var(--na-text-xs);text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.na-course-workspace__meta{margin-top:var(--na-space-2)}.na-course-workspace__tabs,.na-course-workspace__tabs .ant-tabs-nav{margin-bottom:var(--na-space-4)}.na-course-workspace__tabs .ant-tabs-tab{font-size:var(--na-text-sm);padding:var(--na-space-3) var(--na-space-4);font-weight:500}.na-course-workspace__tabs .ant-tabs-tab-active .ant-tabs-tab-btn{color:var(--na-color-primary);font-weight:600}.na-course-workspace__note{margin-top:var(--na-space-4);display:block}.na-ai-interview__context{background:var(--na-color-surface);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);align-items:center;gap:var(--na-space-4);margin-bottom:var(--na-space-4);padding:var(--na-space-4);display:flex}.na-ai-interview__progress{align-items:center;gap:var(--na-space-2);margin-bottom:var(--na-space-4);grid-template-columns:auto 1fr auto;display:grid}.na-ai-interview__start{background:var(--na-color-surface);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);align-items:flex-start;gap:var(--na-space-4);margin-bottom:var(--na-space-4);padding:var(--na-space-4);flex-wrap:wrap;justify-content:space-between;display:flex}.na-ai-interview__messages{gap:var(--na-space-4);margin-bottom:var(--na-space-4);display:grid}.na-ai-interview__quick,.na-ai-interview__composer,.na-ai-interview__actions{margin-bottom:var(--na-space-4)}.na-ai-interview__quick{gap:var(--na-space-3);grid-template-columns:repeat(auto-fit,minmax(220px,1fr));display:grid}.na-ai-interview__option{background:var(--na-color-surface);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);cursor:pointer;gap:var(--na-space-1);padding:var(--na-space-3);text-align:left;display:grid}.na-ai-interview__option:hover,.na-ai-interview__option.is-selected{border-color:var(--na-color-primary);box-shadow:var(--na-shadow-sm)}.na-ai-interview__option-label{color:var(--na-color-text);font-weight:700}.na-ai-interview__option-desc{color:var(--na-color-muted);font-size:var(--na-text-sm)}.na-ai-interview__composer{gap:var(--na-space-3);display:flex}.na-ai-interview__actions{gap:var(--na-space-3);flex-wrap:wrap;justify-content:space-between;display:flex}.na-confirm-direction__actions{align-items:center;gap:var(--na-space-4);margin-top:var(--na-space-6);flex-wrap:wrap;justify-content:space-between;display:flex}.na-intent-brief-card__head{margin-bottom:var(--na-space-4);justify-content:space-between;align-items:center;display:flex}.na-intent-form{margin-top:var(--na-space-2)}.na-confirm-direction__persist{margin-top:var(--na-space-4)}.na-intent-brief__label{color:var(--na-color-success);align-items:center;gap:var(--na-space-2);margin-bottom:var(--na-space-3);font-weight:600;display:inline-flex}.na-intent-brief__label.is-empty{color:var(--na-color-text-secondary)}.na-intent-brief__actions{margin-top:var(--na-space-3)}.na-ai-resources__recent-head{margin-bottom:var(--na-space-4);justify-content:space-between;align-items:center;display:flex}.na-ai-resources__recent-title{color:var(--na-color-text);font-size:var(--na-text-lg);margin:0;font-weight:700}.na-recent-item{border-bottom:1px solid var(--na-color-border-soft);color:inherit;align-items:center;gap:var(--na-space-4);padding:var(--na-space-4) var(--na-space-5);transition:background var(--na-motion-fast) var(--na-ease-standard);text-decoration:none;display:flex}.na-recent-item:last-child{border-bottom:none}.na-recent-item:hover{background:var(--na-color-border-soft)}.na-recent-item__icon{border-radius:var(--na-radius-sm);flex-shrink:0;place-items:center;width:36px;height:36px;font-size:18px;display:inline-grid}.na-recent-item__icon--notes{background:color-mix(in oklab, var(--na-color-primary) 10%, transparent);color:var(--na-color-primary)}.na-recent-item__icon--flashcards{background:color-mix(in oklab, var(--na-color-secondary) 10%, transparent);color:var(--na-color-secondary)}.na-recent-item__icon--practice{background:color-mix(in oklab, var(--na-color-success) 10%, transparent);color:var(--na-color-success)}.na-recent-item__content{flex:1;min-width:0}.na-recent-item__title{font-size:var(--na-text-sm);font-weight:600}.na-recent-item__meta{color:var(--na-color-muted);font-size:var(--na-text-xs);margin-top:1px}.na-recent-item__time{color:var(--na-color-muted);font-family:var(--na-font-mono);font-size:var(--na-text-xs);flex-shrink:0}.na-recent-item__arrow{color:var(--na-color-muted);opacity:0;transition:opacity var(--na-motion-fast) var(--na-ease-standard);flex-shrink:0;font-size:12px}.na-recent-item:hover .na-recent-item__arrow{opacity:1}.na-recent-item .na-status-badge{flex-shrink:0}.na-assignment-list{gap:var(--na-space-4);display:grid}.na-assignment-card{background:var(--na-color-surface);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);padding:var(--na-space-5)}.na-assignment-card__top,.na-assignment-card__bottom{gap:var(--na-space-4);flex-wrap:wrap;justify-content:space-between;display:flex}.na-assignment-card__bottom{margin-top:var(--na-space-4);align-items:center}.na-assignment-card__progress{flex:1;min-width:200px}.na-assignments__create{background:var(--na-color-surface);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);margin-bottom:var(--na-space-6);padding:var(--na-space-5)}.na-assignments__create-form{margin-top:var(--na-space-4);max-width:720px}.na-assignments__score{width:160px}.na-assignment-builder{border-top:1px solid var(--na-color-border);gap:var(--na-space-3);margin:var(--na-space-2) 0 var(--na-space-4);padding-top:var(--na-space-4);display:grid}.na-assignment-builder__list{gap:var(--na-space-3);display:grid}.na-assignment-builder__section{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-sm);padding:var(--na-space-4)}.na-assignment-builder__section-top,.na-assignment-builder__option{align-items:center;gap:var(--na-space-2);display:flex}.na-assignment-builder__section-top{margin-bottom:var(--na-space-3);justify-content:space-between}.na-assignment-builder__type{min-width:150px}.na-assignment-builder__options{gap:var(--na-space-2);margin-bottom:var(--na-space-3);display:grid}.na-assignment-builder__option .ant-form-item{flex:1;margin-bottom:0}.na-student-data__heatmap{gap:var(--na-space-3);margin:var(--na-space-4) 0;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));display:grid}.na-simple-list{gap:var(--na-space-3);margin:var(--na-space-3) 0;display:grid}.na-simple-list__item{border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-sm);padding:var(--na-space-3)}.na-simple-list__item>div{gap:var(--na-space-2);display:grid}.na-simple-list__row{justify-content:space-between;align-items:center;display:flex}.na-course-workspace__tab-cta{padding:var(--na-space-4) 0}.na-course-tab-panel{gap:var(--na-space-4);display:grid}.na-course-tab-panel__footer{margin-top:var(--na-space-2)}.na-course-tab-panel__stats{gap:var(--na-space-3);margin-bottom:var(--na-space-4);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.na-course-tab-stat{background:var(--na-color-surface);border:1px solid var(--na-color-border);border-radius:var(--na-radius-sm);gap:var(--na-space-1);padding:var(--na-space-3) var(--na-space-4);display:grid}.na-course-tab-panel__heatmap{margin:var(--na-space-3) 0 var(--na-space-4)}
.na-topic-group{margin-bottom:var(--na-space-6)}.na-topic-group__label{letter-spacing:.06em;margin-bottom:var(--na-space-3);text-transform:uppercase;font-size:11px;font-weight:700;display:block}.na-topic-row.ant-card{cursor:pointer}.na-topic-row .ant-card-body{align-items:center;gap:var(--na-space-4);grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) auto auto;display:grid}.na-topic-row__info{min-width:0}.na-topic-row__name{font-size:var(--na-text-sm);display:block}.na-topic-row__desc{font-size:var(--na-text-xs);margin-top:2px;display:block}.na-topic-row__assets{gap:var(--na-space-2);flex-wrap:wrap;display:flex}.na-asset-pill{background:var(--na-color-border-soft);border-radius:var(--na-radius-pill);color:var(--na-color-text-secondary);align-items:center;gap:4px;padding:2px 8px;font-size:11px;font-weight:500;display:inline-flex}.na-asset-pill.is-draft{background:color-mix(in srgb, var(--na-color-primary) 8%, var(--na-color-bg));color:var(--na-color-primary)}.na-asset-pill.is-done{background:color-mix(in srgb, var(--na-color-success) 12%, transparent);color:var(--na-color-success)}.na-topic-status{border-radius:var(--na-radius-pill);white-space:nowrap;padding:2px 10px;font-size:11px;font-weight:600}.na-topic-status.is-draft{background:color-mix(in srgb, var(--na-color-primary) 12%, transparent);color:var(--na-color-primary)}.na-topic-status.is-ready{background:color-mix(in srgb, var(--na-color-success) 12%, transparent);color:var(--na-color-success)}.na-topic-row__cta{flex:none}.na-ai-resources__note,.na-material-edit__note,.na-teach-mode__note{margin-top:var(--na-space-4);display:block}.na-teach-mode__header{align-items:flex-start;gap:var(--na-space-4);margin-bottom:var(--na-space-4);flex-wrap:wrap;justify-content:space-between;display:flex}.na-teach-mode__header--toolbar{align-items:center}.na-teach-mode__header-main{align-items:center;gap:var(--na-space-3);flex-wrap:wrap;display:flex}.na-teach-mode__topic-select{min-width:220px}.na-teach-mode__sync-badge{margin-inline-end:0}.na-teach-mode-launcher{gap:var(--na-space-5);display:grid}.na-teach-mode-launcher__header{gap:var(--na-space-2);display:grid}.na-teach-mode-launcher__filters{align-items:center;gap:var(--na-space-3);flex-wrap:wrap;display:flex}.na-teach-mode-launcher__course-select{min-width:260px}.na-teach-mode-launcher__search{min-width:200px;max-width:320px}.na-teach-mode-launcher__list{gap:var(--na-space-3);margin:0;padding:0;list-style:none;display:grid}.na-teach-mode-launcher__row{background:var(--na-color-surface);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-sm);align-items:center;gap:var(--na-space-4);padding:var(--na-space-4);flex-wrap:wrap;justify-content:space-between;display:flex}.na-teach-mode-launcher__row-main{gap:var(--na-space-2);display:grid}.na-teach-mode-launcher__row-title{font-size:var(--na-text-md)}.na-teach-mode-launcher__row-meta{align-items:center}.na-teach-flow,.na-teach-cards{gap:var(--na-space-3);display:grid}.na-teach-phase--current{border-color:var(--na-color-primary)}.na-teach-phase__head{align-items:center;gap:var(--na-space-3);margin-bottom:var(--na-space-2);justify-content:space-between;display:flex}.na-teach-phase__list{margin:var(--na-space-2) 0;padding-left:var(--na-space-5)}.na-teach-phase__note{margin-top:var(--na-space-2);display:block}.na-teach-mode__demo-note{margin-bottom:var(--na-space-4)}.na-teach-mode__footer{margin-top:var(--na-space-6)}.na-grading__topbar{border-bottom:1px solid var(--na-color-border);align-items:center;gap:var(--na-space-4);padding:var(--na-space-4) var(--na-space-6);flex-wrap:wrap;justify-content:space-between;display:flex}.na-grading__topbar-meta{font-size:var(--na-text-xs);margin-top:var(--na-space-1)}.na-grading__title{margin:var(--na-space-2) 0 0}.na-grading-layout{grid-template-columns:260px minmax(0,1fr) 320px;min-height:calc(100vh - 120px);display:grid}.na-grading-workspace__list{border-right:1px solid var(--na-color-border);flex-direction:column;min-width:0;min-height:0;display:flex;overflow:hidden}.na-grading-workspace__list-header{border-bottom:1px solid var(--na-color-border);padding:var(--na-space-4) var(--na-space-5)}.na-grading-workspace__list-title{font-size:var(--na-text-sm);font-weight:700}.na-grading-workspace__list-meta{color:var(--na-color-muted);font-size:var(--na-text-xs);gap:var(--na-space-3);margin-top:var(--na-space-2);display:flex}.na-grading-workspace__search{margin:var(--na-space-3) var(--na-space-4);max-width:calc(100% - (var(--na-space-4) * 2))}.na-grading-workspace__search .ant-input-affix-wrapper,.na-grading-workspace__search .ant-input{width:100%;max-width:100%}.na-grading-filter-tabs{border-bottom:1px solid var(--na-color-border-soft);padding:0 var(--na-space-4);flex-wrap:wrap;display:flex;overflow:hidden}.na-grading-filter-tab{color:var(--na-color-muted);cursor:pointer;padding:var(--na-space-2) var(--na-space-3);background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-1px;font-size:11px;font-weight:500}.na-grading-filter-tab:hover{color:var(--na-color-text)}.na-grading-filter-tab.is-active{border-bottom-color:var(--na-color-primary);color:var(--na-color-primary);font-weight:600}.na-grading-workspace__list-items{flex:1;overflow-y:auto}.na-grading-student-row{cursor:pointer;align-items:center;gap:var(--na-space-3);padding:var(--na-space-3) var(--na-space-5);transition:background var(--na-motion-fast);border-left:3px solid #0000;display:flex}.na-grading-student-row:hover{background:var(--na-color-border-soft)}.na-grading-student-row.is-selected{background:var(--na-color-surface-warm);border-left-color:var(--na-color-primary)}.na-grading-student-row__avatar{background:var(--na-color-border);color:var(--na-color-muted);border-radius:50%;flex-shrink:0;place-items:center;width:30px;height:30px;font-size:11px;font-weight:600;display:grid}.na-grading-student-row__info{flex:1;min-width:0}.na-grading-student-row__name{font-size:var(--na-text-sm);font-weight:500}.na-grading-student-row__time{color:var(--na-color-muted);font-family:var(--na-font-mono);font-size:11px}.na-grading-grade-pill{border-radius:var(--na-radius-pill);font-family:var(--na-font-mono);padding:2px 8px;font-size:11px;font-weight:600}.na-grading-grade-pill--scored{background:color-mix(in oklab, var(--na-color-success) 10%, transparent);color:var(--na-color-success)}.na-grading-grade-pill--pending{background:var(--na-color-border-soft);color:var(--na-color-muted)}.na-grading-workspace__submission{max-height:calc(100vh - 120px);padding:var(--na-space-6) var(--na-space-8);overflow-y:auto}.na-grading-workspace__feedback{border-left:1px solid var(--na-color-border);gap:var(--na-space-3);max-height:calc(100vh - 120px);padding:var(--na-space-5) var(--na-space-6);flex-direction:column;display:flex;overflow-y:auto}.na-grading-question{border-bottom:1px solid var(--na-color-border-soft);margin-bottom:var(--na-space-4);padding-bottom:var(--na-space-4)}.na-grading-question__prompt{margin:var(--na-space-2) 0;display:block}.na-grading-question__answer{background:var(--na-color-bg);border-radius:var(--na-radius-sm);padding:var(--na-space-3);white-space:pre-wrap}.na-grading-feedback__field{margin:var(--na-space-4) 0}.na-grading-feedback__note{margin-top:var(--na-space-3)}.na-heatmap-cell{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);gap:var(--na-space-1);padding:var(--na-space-4);flex-direction:column;display:flex}.na-heatmap-cell--weak{border-color:color-mix(in oklab, var(--na-color-danger) 30%, transparent)}.na-heatmap-cell--developing{border-color:color-mix(in oklab, var(--na-color-warning) 30%, transparent)}.na-teach-mode__subtitle{margin-top:var(--na-space-2);display:block}.na-teach-panel{background:var(--na-color-surface);border:1px solid var(--na-color-border);border-radius:var(--na-radius-lg);overflow:hidden}.na-teach-panel__head{border-bottom:1px solid var(--na-color-border-soft);align-items:center;gap:var(--na-space-3);padding:var(--na-space-5) var(--na-space-6);flex-wrap:wrap;justify-content:space-between;display:flex}.na-teach-panel__body{padding:var(--na-space-5) var(--na-space-6)}.na-teach-flow-timeline{padding-left:var(--na-space-8);position:relative}.na-teach-flow-timeline:before{background:var(--na-color-border);content:"";width:2px;position:absolute;top:0;bottom:0;left:13px}.na-teach-flow-phase{padding-bottom:var(--na-space-6);position:relative}.na-teach-flow-phase:last-child{padding-bottom:0}.na-teach-flow-phase__dot{background:var(--na-color-bg);border:2px solid var(--na-color-border);height:16px;left:calc(var(--na-space-8) * -1 + 6px);z-index:1;border-radius:50%;width:16px;position:absolute;top:2px}.na-teach-flow-phase--done .na-teach-flow-phase__dot{background:var(--na-color-success);border-color:var(--na-color-success)}.na-teach-flow-phase--current .na-teach-flow-phase__dot{background:var(--na-color-primary);border-color:var(--na-color-primary)}.na-teach-flow-phase__head{align-items:center;gap:var(--na-space-3);margin-bottom:var(--na-space-2);flex-wrap:wrap;display:flex}.na-teach-flow-phase__name{font-size:var(--na-text-lg)}.na-teach-flow-phase__duration{background:var(--na-color-border-soft);border-radius:var(--na-radius-pill);color:var(--na-color-muted);font-size:var(--na-text-xs);padding:2px var(--na-space-2);font-weight:600}.na-teach-flow-phase__list{color:var(--na-color-text-secondary);font-size:var(--na-text-sm);margin:var(--na-space-2) 0 0;padding-left:var(--na-space-5)}.na-teach-flow-phase__note{background:var(--na-color-surface-warm);border-left:3px solid var(--na-color-primary);border-radius:0 var(--na-radius-sm) var(--na-radius-sm) 0;gap:var(--na-space-1);font-size:var(--na-text-sm);margin-top:var(--na-space-3);padding:var(--na-space-3) var(--na-space-4);display:grid}.na-teach-flashcard-area{flex-direction:column;align-items:center;display:flex}.na-teach-flashcard-area__counter{font-family:var(--na-font-mono);margin-bottom:var(--na-space-5)}.na-teach-flashcard{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-lg);box-shadow:var(--na-elev-raised,0 18px 42px #1f1f1f1a);cursor:pointer;max-width:640px;min-height:300px;padding:var(--na-space-12) var(--na-space-8);text-align:center;flex-direction:column;justify-content:center;align-items:center;width:100%;display:flex;position:relative}.na-teach-flashcard:hover{border-color:color-mix(in oklab, var(--na-color-primary) 40%, transparent)}.na-teach-flashcard__side{color:var(--na-color-muted);left:var(--na-space-5);letter-spacing:.08em;text-transform:uppercase;top:var(--na-space-5);font-size:11px;font-weight:600;position:absolute}.na-teach-flashcard__content{font-size:var(--na-text-2xl);letter-spacing:-.018em;font-weight:600;line-height:1.5}.na-teach-flashcard__hint{bottom:var(--na-space-5);color:var(--na-color-muted);font-size:var(--na-text-xs);position:absolute}.na-teach-flashcard-area__nav{align-items:center;gap:var(--na-space-4);margin-top:var(--na-space-6);display:flex}.na-teach-flashcard-area__nav-btn{width:48px;height:48px}.na-teach-flashcard-area__flip{border-radius:var(--na-radius-pill)}.na-teach-quiz{max-width:760px;margin-inline:auto}.na-teach-quiz__header{margin-bottom:var(--na-space-6);text-align:center}.na-teach-quiz__counter{font-family:var(--na-font-mono);margin-bottom:var(--na-space-3);display:block}.na-teach-quiz__question{margin:0!important}.na-teach-quiz__source{margin-top:var(--na-space-3);display:block}.na-teach-quiz__options{gap:var(--na-space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.na-teach-quiz__option{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);cursor:pointer;font-size:var(--na-text-base);align-items:center;gap:var(--na-space-4);padding:var(--na-space-5) var(--na-space-6);text-align:left;font-weight:500;display:flex}.na-teach-quiz__option:hover{border-color:color-mix(in oklab, var(--na-color-primary) 40%, transparent)}.na-teach-quiz__option.is-selected{background:var(--na-color-surface-warm);border-color:var(--na-color-primary)}.na-teach-quiz__option.is-correct{background:color-mix(in oklab, var(--na-color-success) 8%, var(--na-color-bg));border-color:var(--na-color-success)}.na-teach-quiz__option.is-wrong{background:color-mix(in oklab, var(--na-color-danger) 6%, var(--na-color-bg));border-color:var(--na-color-danger)}.na-teach-quiz__option-letter{border:2px solid var(--na-color-border);color:var(--na-color-muted);font-size:var(--na-text-sm);border-radius:50%;flex-shrink:0;place-items:center;width:36px;height:36px;font-weight:700;display:grid}.na-teach-quiz__option.is-selected .na-teach-quiz__option-letter{border-color:var(--na-color-primary);color:var(--na-color-primary)}.na-teach-quiz__option.is-correct .na-teach-quiz__option-letter{background:var(--na-color-success);border-color:var(--na-color-success);color:#fff}.na-teach-quiz__result{background:color-mix(in oklab, var(--na-color-success) 6%, var(--na-color-bg));border:1px solid color-mix(in oklab, var(--na-color-success) 25%, transparent);border-radius:var(--na-radius-md);gap:var(--na-space-2);margin-top:var(--na-space-5);padding:var(--na-space-5) var(--na-space-6);display:grid}.na-teach-quiz__result-title{color:var(--na-color-success)}.na-teach-quiz__actions{margin-top:var(--na-space-5);justify-content:center;width:100%}.na-teach-discussion{flex-direction:column;align-items:center;display:flex}.na-teach-discussion__prompt-card{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-lg);box-shadow:var(--na-elev-raised,0 18px 42px #1f1f1f1a);max-width:720px;padding:var(--na-space-12) var(--na-space-8);text-align:center;width:100%}.na-teach-discussion__type{color:var(--na-color-warning);font-size:var(--na-text-xs);letter-spacing:.08em;margin-bottom:var(--na-space-4);text-transform:uppercase;font-weight:600}.na-teach-discussion__question{font-size:var(--na-text-xl);letter-spacing:-.018em;max-width:600px;margin:0 auto;font-weight:700;line-height:1.5}.na-teach-discussion__context{color:var(--na-color-muted);font-size:var(--na-text-sm);margin:var(--na-space-5) auto 0;max-width:520px;line-height:1.6}.na-teach-discussion__timer{align-items:center;gap:var(--na-space-2);margin-top:var(--na-space-6);flex-direction:column;display:flex}.na-teach-discussion__countdown{font-family:var(--na-font-mono);font-size:var(--na-text-2xl);font-variant-numeric:tabular-nums;letter-spacing:.05em;font-weight:700}.na-teach-discussion__countdown.is-warning{color:var(--na-color-danger)}.na-teach-discussion__countdown-label{font-size:var(--na-text-xs);letter-spacing:.06em;text-transform:uppercase}.na-teach-discussion__nav{gap:var(--na-space-3);margin-top:var(--na-space-5);flex-wrap:wrap;justify-content:center;display:flex}.na-assignments__note,.na-grading__note,.na-student-data__note,.na-notice__note{margin-top:var(--na-space-4);display:block}
.na-student-ole__compare{gap:var(--na-space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.na-student-ole__compare-col{border-radius:var(--na-radius-sm);padding:var(--na-space-4)}.na-student-ole__compare-col.is-target{background:var(--na-color-surface)}.na-student-ole__compare-col.is-current{background:var(--na-color-surface-warm)}.na-student-ole__compare-col h3{color:var(--na-color-muted);font-size:var(--na-text-sm);letter-spacing:.03em;margin:0 0 var(--na-space-3);text-transform:uppercase;font-weight:600}.na-student-ole__compare-row{border-bottom:1px solid var(--na-color-border-soft);font-size:var(--na-text-sm);padding:var(--na-space-2) 0;justify-content:space-between;display:flex}.na-student-ole__compare-row:last-child{border-bottom:none}.na-student-ole__compare-label{color:var(--na-color-text-secondary)}.na-student-ole__compare-value{font-weight:600}.na-student-ole__compare-value.is-met{color:var(--na-color-success)}.na-student-ole__compare-value.is-unmet{color:var(--na-color-danger)}.na-student-ole__compare-value.is-uncertain{color:var(--na-color-warning)}.na-student-ole__compare-value.is-muted{color:var(--na-color-muted)}.na-student-ole__upload-zone{background:var(--na-color-surface);border:1px dashed var(--na-color-border);border-radius:var(--na-radius-sm);color:var(--na-color-text-secondary);cursor:pointer;align-items:center;gap:var(--na-space-2);min-height:120px;padding:var(--na-space-4);text-align:center;flex-direction:column;justify-content:center;display:flex}.na-student-ole__upload-zone:hover{border-color:var(--na-color-primary);color:var(--na-color-primary)}.na-student-ole__comparison-empty{color:var(--na-color-muted);font-size:var(--na-text-sm);margin:0}.na-student-ole__suggestions{gap:var(--na-space-2);margin:0;padding:0;list-style:none;display:grid}.na-student-ole__suggestion{background:var(--na-color-surface);border-radius:var(--na-radius-sm);align-items:flex-start;gap:var(--na-space-3);padding:var(--na-space-3) var(--na-space-4);display:flex}.na-student-ole__suggestion-num{background:var(--na-color-primary);color:#fff;font-size:var(--na-text-xs);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;font-weight:700;display:flex}.na-student-ole__suggestion-text{color:var(--na-color-text-secondary);font-size:var(--na-text-sm);line-height:1.5}.na-student-home__greeting{margin-bottom:var(--na-space-8)}.na-student-home__greeting h1{font-size:var(--na-text-2xl);letter-spacing:-.018em;margin:0;font-weight:700;line-height:1.08}.na-student-home__greeting p{color:var(--na-color-muted);font-size:var(--na-text-sm);margin:var(--na-space-2) 0 0}.na-student-home__teacher-cta{background:color-mix(in srgb, var(--na-color-accent) 8%, var(--na-color-bg));border:1px solid color-mix(in srgb, var(--na-color-accent) 30%, transparent);border-radius:var(--na-radius-md);color:inherit;align-items:center;gap:var(--na-space-4);margin-bottom:var(--na-space-6);padding:var(--na-space-4) var(--na-space-6);text-decoration:none;display:flex}.na-student-home__teacher-cta-body{flex-direction:column;flex:1;gap:2px;display:flex}.na-student-home__teacher-cta-body strong{color:var(--na-color-accent);font-size:var(--na-text-sm)}.na-student-home__teacher-cta-body span{color:var(--na-color-text-secondary);font-size:var(--na-text-xs)}.na-student-home__teacher-cta-dot{background:var(--na-color-accent);border-radius:50%;flex-shrink:0;width:10px;height:10px;animation:2s ease-in-out infinite na-pulse}.na-student-home__teacher-cta-badge{background:var(--na-color-accent);border-radius:var(--na-radius-pill);color:#fff;padding:3px 8px;font-size:10px;font-weight:700}.na-student-home__quick{gap:var(--na-space-3);margin-bottom:var(--na-space-8);flex-wrap:wrap;display:flex}.na-student-home__quick-pill{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-pill);color:var(--na-color-text-secondary);font-size:var(--na-text-sm);align-items:center;gap:var(--na-space-2);padding:var(--na-space-3) var(--na-space-5);font-weight:500;text-decoration:none;display:inline-flex}.na-student-home__quick-pill:hover{background:color-mix(in srgb, var(--na-color-accent) 8%, var(--na-color-bg));border-color:var(--na-color-accent);color:var(--na-color-accent)}.na-student-home__section{margin-bottom:var(--na-space-8)}.na-student-home__section-head h2{font-size:var(--na-text-lg);margin:0 0 var(--na-space-5);font-weight:700}.na-student-home__notebook-grid{gap:var(--na-space-5);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.na-student-home__today{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-lg);margin-bottom:var(--na-space-8);overflow:hidden}.na-student-home__today-head{border-bottom:1px solid var(--na-color-border-soft);padding:var(--na-space-5) var(--na-space-6);justify-content:space-between;align-items:center;display:flex}.na-student-home__today-head h2{font-size:var(--na-text-base);align-items:center;gap:var(--na-space-2);margin:0;font-weight:700;display:flex}.na-student-home__today-head a{color:var(--na-color-accent);font-size:var(--na-text-sm);font-weight:500}.na-student-home__today-row{align-items:center;gap:var(--na-space-4);padding:var(--na-space-3) var(--na-space-6);display:flex}.na-student-home__today-row:hover{background:var(--na-color-surface)}.na-student-home__today-check{border:2px solid var(--na-color-border);border-radius:50%;flex-shrink:0;width:20px;height:20px}.na-student-home__today-row.is-done .na-student-home__today-check{background:var(--na-color-success,#22a06b);border-color:var(--na-color-success,#22a06b)}.na-student-home__today-title{font-size:var(--na-text-sm);font-weight:500}.na-student-home__today-row.is-done .na-student-home__today-title{color:var(--na-color-muted);text-decoration:line-through}.na-student-home__today-desc{color:var(--na-color-muted);font-size:var(--na-text-xs);margin-top:1px}.na-student-home__today-badge{border-radius:var(--na-radius-pill);flex-shrink:0;padding:2px 8px;font-size:11px;font-weight:600}.na-student-home__today-badge.is-revision{background:color-mix(in srgb, var(--na-color-success,#22a06b) 12%, transparent);color:var(--na-color-success,#22a06b)}.na-student-home__today-badge.is-practice{background:color-mix(in srgb, var(--na-color-accent) 12%, transparent);color:var(--na-color-accent)}.na-student-home__today-badge.is-assignment{color:#cf1322;background:#cf13221f}.na-student-home__activity{background:var(--na-color-bg);border:1px solid var(--na-color-border);border-radius:var(--na-radius-lg);overflow:hidden}.na-student-home__activity>h2{border-bottom:1px solid var(--na-color-border-soft);font-size:var(--na-text-base);padding:var(--na-space-5) var(--na-space-6);margin:0;font-weight:700}.na-student-home__activity-list{padding:var(--na-space-4) var(--na-space-6)}.na-student-home__activity-row{border-bottom:1px solid var(--na-color-border-soft);gap:var(--na-space-3);padding:var(--na-space-3) 0;display:flex}.na-student-home__activity-row:last-child{border-bottom:none}.na-student-home__activity-dot{margin-top:6px}.na-student-home__activity-row p{color:var(--na-color-text-secondary);font-size:var(--na-text-sm);margin:0}.na-student-home__activity-row time{color:var(--na-color-muted);font-family:var(--na-font-mono);margin-top:2px;font-size:11px;display:block}.na-student-ole__header{margin-bottom:28px}.na-student-ole__title{margin:0 0 var(--na-space-3);font-size:26px;font-weight:700}.na-student-ole__disclaimer{border-radius:var(--na-radius-sm);color:#d59311;font-size:var(--na-text-sm);align-items:center;gap:var(--na-space-2);margin-top:var(--na-space-3);padding:var(--na-space-3) var(--na-space-4);background:#faad141a;border:1px solid #faad144d;font-weight:600;display:inline-flex}.na-student-ole__disclaimer-icon{color:#fff;background:#faad14;border-radius:50%;justify-content:center;align-items:center;width:18px;height:18px;font-size:12px;font-weight:700;display:flex}.na-student-ole__target{background:var(--na-color-bg);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);align-items:center;gap:var(--na-space-3);margin-bottom:var(--na-space-6);padding:var(--na-space-4) var(--na-space-5);flex-wrap:wrap;justify-content:space-between;display:flex}.na-student-ole__target-label{color:var(--na-color-muted);margin-bottom:4px;font-size:13px}.na-student-ole__target-value{font-size:var(--na-text-base);font-weight:600}.na-student-ole__card{background:var(--na-color-bg);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);margin-bottom:var(--na-space-6);padding:var(--na-space-6)}.na-student-ole__card-title{font-size:var(--na-text-base);margin:0 0 var(--na-space-4);font-weight:600}.na-student-ole__gap-content{flex:1}.na-student-ole__gap-title{font-size:var(--na-text-sm);font-weight:500}.na-student-ole__gap-detail{color:var(--na-color-muted);margin-top:2px;font-size:13px}.na-student-ole__gaps{margin:0;padding:0;list-style:none}.na-student-ole__gap{border-bottom:1px solid var(--na-color-border-soft);align-items:flex-start;gap:var(--na-space-3);padding:var(--na-space-3) 0;display:flex}.na-student-ole__gap:last-child{border-bottom:none}.na-student-ole__gap-icon{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;font-size:13px;font-weight:700;display:flex}.na-student-ole__gap.is-met .na-student-ole__gap-icon{color:#22a06b;background:#e6f9f0}.na-student-ole__gap.is-unmet .na-student-ole__gap-icon{color:#cf1322;background:#fff1f0}.na-student-ole__gap.is-uncertain .na-student-ole__gap-icon{color:#d48806;background:#fffbe6}.na-student-ole__activity-grid{gap:var(--na-space-3);grid-template-columns:repeat(auto-fit,minmax(140px,1fr));display:grid}.na-student-ole__activity-card{background:var(--na-color-surface);border-radius:var(--na-radius-sm);padding:var(--na-space-4);text-align:center}.na-student-ole__activity-unit{color:var(--na-color-muted);font-size:13px}.na-student-ole__activity-category{color:var(--na-color-text-secondary);margin-top:6px;font-size:13px;font-weight:500}.na-student-ole__activity-hours{color:var(--na-color-accent);font-size:28px;font-weight:700}.na-student-timetable__page-head{margin-bottom:var(--na-space-6)}.na-student-timetable__setup{margin-top:var(--na-space-8)}.na-student-timetable__setup-head{margin-bottom:var(--na-space-8);text-align:center}.na-student-timetable__setup-head h2{font-size:var(--na-text-2xl);letter-spacing:var(--na-tracking-display);font-weight:700;line-height:var(--na-leading-tight);margin-bottom:var(--na-space-2)}.na-student-timetable__setup-head p{color:var(--na-color-muted);font-size:var(--na-text-base)}.na-student-timetable__setup-card{background:var(--na-color-bg);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-lg);padding:var(--na-space-8)}.na-student-timetable__radio-group{gap:var(--na-space-2);flex-wrap:wrap;display:flex}.na-student-timetable__subject-grid{gap:var(--na-space-2);grid-template-columns:repeat(auto-fill,minmax(120px,1fr));width:100%;display:grid}.na-student-timetable__subject-grid .ant-checkbox-wrapper{border:1px solid var(--na-color-border);border-radius:var(--na-radius-md);padding:var(--na-space-3) var(--na-space-4);justify-content:center;align-items:center;margin:0;display:flex}.na-student-timetable__subject-grid .ant-checkbox-wrapper-checked{background:var(--na-color-surface-warm);border-color:var(--na-color-accent);color:var(--na-color-accent);font-weight:600}.na-student-timetable__weak-list{gap:var(--na-space-2);flex-wrap:wrap;display:flex}.na-student-timetable__loading{align-items:center;gap:var(--na-space-6);flex-direction:column;justify-content:center;min-height:400px;display:flex}.na-student-timetable__spinner{border:3px solid var(--na-color-border-soft);border-top-color:var(--na-color-accent);border-radius:50%;width:48px;height:48px;animation:.8s linear infinite na-spin}.na-student-timetable__chips{align-items:center;gap:var(--na-space-3);margin-bottom:var(--na-space-6);flex-wrap:wrap;display:flex}.na-student-timetable__edit-guidance{gap:var(--na-space-3);margin:calc(var(--na-space-6) * -1) 0 var(--na-space-6);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.na-student-timetable__edit-guidance span{background:var(--na-color-surface);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);color:var(--na-color-muted);font-size:var(--na-text-xs);line-height:var(--na-leading-normal);padding:var(--na-space-3) var(--na-space-4)}.na-student-timetable__chip{background:var(--na-color-bg);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-pill);font-size:var(--na-text-xs);align-items:center;gap:var(--na-space-2);padding:var(--na-space-2) var(--na-space-4);display:inline-flex}.na-student-timetable__countdown{background:var(--na-color-bg);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);margin-bottom:var(--na-space-6);padding:var(--na-space-5) var(--na-space-6);justify-content:space-between;align-items:center;display:flex}.na-student-timetable__countdown-num{text-align:center}.na-student-timetable__countdown-num strong{color:var(--na-color-accent);font-size:var(--na-text-2xl);font-weight:700;line-height:var(--na-leading-tight);display:block}.na-student-timetable__countdown-num span{color:var(--na-color-muted);font-size:var(--na-text-xs)}.na-student-timetable__calendar{background:var(--na-color-bg);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);margin-bottom:var(--na-space-6);padding:var(--na-space-5) var(--na-space-6)}.na-student-timetable__calendar-head{margin-bottom:var(--na-space-4);justify-content:space-between;align-items:center;display:flex}.na-student-timetable__calendar-nav{align-items:center;gap:var(--na-space-2);display:flex}.na-student-timetable__calendar-head h3{font-size:var(--na-text-sm);margin:0;font-weight:600}.na-student-timetable__calendar-head span{color:var(--na-color-muted);font-size:var(--na-text-xs)}.na-student-timetable__calendar-grid{gap:var(--na-space-2);grid-template-columns:repeat(7,1fr);display:grid}.na-student-timetable__cal-day{border-radius:var(--na-radius-sm);padding:var(--na-space-3) var(--na-space-1);text-align:center}.na-student-timetable__cal-day.is-today{background:var(--na-color-accent)}.na-student-timetable__cal-day.is-today .na-student-timetable__cal-label,.na-student-timetable__cal-day.is-today .na-student-timetable__cal-num{color:var(--na-color-accent-on)}.na-student-timetable__cal-label{color:var(--na-color-muted);margin-bottom:var(--na-space-1);font-size:11px;font-weight:500;display:block}.na-student-timetable__cal-num{font-size:var(--na-text-sm);margin-bottom:var(--na-space-2);font-weight:600;display:block}.na-student-timetable__cal-blocks{flex-wrap:wrap;justify-content:center;gap:3px;display:flex}.na-student-timetable__cal-block{border-radius:2px;width:8px;height:8px}.na-student-timetable__cal-block.is-chinese{background:#f5222d}.na-student-timetable__cal-block.is-math{background:#1677ff}.na-student-timetable__cal-block.is-english{background:#52c41a}.na-student-timetable__cal-block.is-liberal{background:#722ed1}.na-student-timetable__calendar-note{color:var(--na-color-muted);font-size:var(--na-text-xs);margin:var(--na-space-3) 0 0}.na-student-timetable__today-plan h2{font-size:var(--na-text-base);align-items:center;gap:var(--na-space-2);margin-bottom:var(--na-space-4);font-weight:700;display:flex}.na-student-timetable__badge{background:var(--na-color-surface-warm);border-radius:var(--na-radius-pill);color:var(--na-color-accent);padding:var(--na-space-1) var(--na-space-3);font-size:11px;font-weight:600}.na-student-timetable__task-list{gap:var(--na-space-3);margin-bottom:var(--na-space-6);flex-direction:column;display:flex}.na-student-timetable__task-card{background:var(--na-color-bg);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);align-items:center;gap:var(--na-space-4);padding:var(--na-space-4) var(--na-space-5);display:flex}.na-student-timetable__task-dot{border-radius:50%;flex-shrink:0;width:10px;height:10px}.na-student-timetable__task-dot.is-chinese{background:#f5222d}.na-student-timetable__task-dot.is-math{background:#1677ff}.na-student-timetable__task-dot.is-english{background:#52c41a}.na-student-timetable__task-mins{color:var(--na-color-muted);font-size:var(--na-text-sm);flex-shrink:0;margin-left:auto;font-weight:600}.na-student-timetable__task-reason{color:var(--na-color-muted);font-size:var(--na-text-xs);margin-top:2px}.na-student-timetable__plan-basis{margin-bottom:var(--na-space-6)}.na-student-timetable__evidence-grid{gap:var(--na-space-3);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.na-student-timetable__evidence-card{background:var(--na-color-bg);border:1px solid var(--na-color-border-soft);border-radius:var(--na-radius-md);align-items:flex-start;gap:var(--na-space-3);min-width:0;padding:var(--na-space-4);display:flex}.na-student-timetable__evidence-card>div,.na-student-timetable__evidence-grid .na-student-timetable__task-card{min-width:0}.na-student-timetable__evidence-source,.na-student-timetable__evidence-meta{color:var(--na-color-muted);font-size:var(--na-text-xs);overflow-wrap:anywhere}.na-student-timetable__task-edit-controls{gap:var(--na-space-3);grid-template-columns:repeat(2,minmax(0,1fr));min-width:0;display:grid}.na-student-timetable__task-edit-controls .ant-input,.na-student-timetable__task-edit-controls .ant-picker{width:100%;min-width:0}.na-student-timetable__task-actions{align-items:center;gap:var(--na-space-1);flex-wrap:nowrap;justify-content:flex-start;min-width:0;margin-left:auto;display:flex}.na-student-timetable__task-readonly{color:var(--na-color-muted);font-size:var(--na-text-xs)}.na-student-timetable__readonly-note{color:var(--na-color-muted);font-size:var(--na-text-xs);line-height:var(--na-leading-normal)}.na-student-timetable__task-card.is-readonly,.na-student-timetable__table-row.is-readonly{background:var(--na-color-surface);color:var(--na-color-muted)}.na-student-timetable__table{border:1px solid var(--na-color-border);border-radius:var(--na-radius-lg);margin-top:var(--na-space-5);overflow:hidden}.na-student-timetable__table-head,.na-student-timetable__table-row{align-items:center;gap:var(--na-space-3);padding:var(--na-space-3) var(--na-space-4);grid-template-columns:minmax(96px,.85fr) minmax(108px,.9fr) minmax(220px,2fr) minmax(72px,.65fr) minmax(76px,.65fr) minmax(296px,1.8fr);display:grid}.na-student-timetable__table-head{background:var(--na-color-surface);color:var(--na-color-muted);font-size:var(--na-text-xs);font-weight:700}.na-student-timetable__table-row{border-top:1px solid var(--na-color-border-soft);color:var(--na-color-text-secondary);font-size:var(--na-text-sm)}.na-student-timetable__table-date,.na-student-timetable__table-subject,.na-student-timetable__table-task,.na-student-timetable__table-minutes,.na-student-timetable__status-cell,.na-student-timetable__actions-cell{min-width:0}.na-student-timetable__table-subject,.na-student-timetable__table-task{overflow-wrap:anywhere}.na-student-timetable__table-subject .ant-input,.na-student-timetable__table-task .ant-input{width:100%}.na-student-timetable__table-task .ant-input{min-height:44px}.na-student-timetable__status-cell{align-items:center;gap:var(--na-space-2);display:flex}.na-student-timetable__actions-cell{min-width:0}.na-student-timetable__status-label{color:var(--na-color-text-secondary);font-size:var(--na-text-sm)}.na-student-timetable__status-label.is-done{color:var(--na-color-text);font-weight:700}.na-student-timetable__status-label.is-skipped{color:var(--na-color-muted);font-weight:600}.na-student-timetable__status-action.ant-btn{background:var(--na-color-surface);border-color:var(--na-color-border);color:var(--na-color-text-secondary);height:32px;padding-inline:var(--na-space-2);white-space:nowrap;flex:none;font-size:11px;font-weight:600}.na-student-timetable__status-action.ant-btn:hover,.na-student-timetable__status-action.ant-btn:focus{background:var(--na-color-bg);border-color:var(--na-color-accent);color:var(--na-color-accent)}.na-student-timetable__ai-note{background:var(--na-color-surface);border-radius:var(--na-radius-md);padding:var(--na-space-4) var(--na-space-5)}.na-student-timetable__backend{margin-top:var(--na-space-6);display:block}