.activity-combobox{width:100%;position:relative}.activity-combobox__input-wrapper{align-items:center;display:flex;position:relative}.activity-combobox__input{background-color:#fff;border:1px solid #ddd;border-radius:4px;width:100%;padding:8px 32px 8px 12px;font-size:14px;line-height:1.4;transition:border-color .2s,box-shadow .2s}.activity-combobox__input:focus{border-color:#007bff;outline:none;box-shadow:0 0 0 2px rgba(0,123,255,.25)}.activity-combobox__input::placeholder{color:#999}.activity-combobox__toggle{cursor:pointer;color:#666;background:0 0;border:none;justify-content:center;align-items:center;padding:4px;transition:color .2s;display:flex;position:absolute;top:50%;right:8px;transform:translateY(-50%)}.activity-combobox__toggle:hover{color:#333}.activity-combobox__toggle:focus{color:#007bff;outline:none}.activity-combobox__arrow{font-size:12px;transition:transform .2s}.activity-combobox__arrow--up{transform:rotate(180deg)}.activity-combobox__dropdown{z-index:1000;background:#fff;border:1px solid #ddd;border-top:none;border-radius:0 0 4px 4px;max-height:200px;position:absolute;top:100%;left:0;right:0;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.1)}.activity-combobox__list{max-height:200px;margin:0;padding:0;list-style:none;overflow-y:auto}.activity-combobox__option{cursor:pointer;color:#333;border-bottom:1px solid #f0f0f0;padding:8px 12px;font-size:14px;line-height:1.4;transition:background-color .15s}.activity-combobox__option:last-child{border-bottom:none}.activity-combobox__option:hover,.activity-combobox__option--highlighted{background-color:#f8f9fa}.activity-combobox__option--highlighted{background-color:#e3f2fd}.activity-combobox__option[aria-selected=true]{color:#fff;background-color:#007bff}.activity-combobox__no-options{color:#999;text-align:center;padding:8px 12px;font-size:14px;font-style:italic}.activity-combobox--open .activity-combobox__input{border-bottom-color:#ddd;border-bottom-right-radius:0;border-bottom-left-radius:0}.activity-combobox__list{scrollbar-width:thin;scrollbar-color:#ccc transparent}.activity-combobox__list::-webkit-scrollbar{width:6px}.activity-combobox__list::-webkit-scrollbar-track{background:0 0}.activity-combobox__list::-webkit-scrollbar-thumb{background-color:#ccc;border-radius:3px}.activity-combobox__list::-webkit-scrollbar-thumb:hover{background-color:#999}@media (prefers-color-scheme:dark){.activity-combobox__input{color:#fff;background-color:#2d2d2d;border-color:#555}.activity-combobox__input:focus{border-color:#0d6efd}.activity-combobox__input::placeholder{color:#aaa}.activity-combobox__dropdown{background:#2d2d2d;border-color:#555}.activity-combobox__option{color:#fff;border-bottom-color:#444}.activity-combobox__option:hover,.activity-combobox__option--highlighted{background-color:#3d3d3d}.activity-combobox__option--highlighted{background-color:#1e3a5f}.activity-combobox__no-options,.activity-combobox__toggle{color:#aaa}.activity-combobox__toggle:hover{color:#fff}}.chat-header-container{background-color:#fff;border-bottom:1px solid #f2f2f2}.chat-header{background-color:#fff;justify-content:space-between;align-items:center;padding:14px 16px;display:flex;position:relative}.chat-header__left,.chat-header__right{flex:none;align-items:center;gap:8px;display:flex}.chat-header__left{justify-content:flex-start}.chat-header__center{flex:auto;justify-content:center;align-items:center;display:flex}.chat-header__right{justify-content:flex-end}.chat-header__button{cursor:pointer;background:0 0;border:none;border-radius:4px;justify-content:center;align-items:center;padding:8px;transition:background-color .2s;display:flex}.chat-header__button:hover{cursor:pointer}.chat-header__badge{background-color:var(--color-tangerine-ai,#bc3ebc);color:#fff;border-radius:10px;justify-content:center;align-items:center;min-width:20px;height:20px;margin-left:8px;padding:0 6px;font-size:12px;font-weight:700;display:flex}.chat-header__divider{background-color:#f2f2f2;width:1px;height:30px;margin:0 8px}.chat-mermaid-card{cursor:pointer;background:#fff;border:1px solid #e0e0e0;border-radius:8px;margin:8px 0;transition:all .2s}.chat-mermaid-card:hover{transform:translateY(-1px);box-shadow:0 4px 8px rgba(0,0,0,.1)}.chat-mermaid-card--error{color:#e04949;box-shadow:none;cursor:default;background:#fef0ef;border-color:#e04949;padding:8px}.chat-mermaid-card--error:hover{box-shadow:none;border-color:#e04949;transform:none}.chat-mermaid-card__preview{padding:8px;overflow:hidden}.chat-mermaid-card__preview .diagram-mermaid,.chat-mermaid-card__preview .diagram-mermaid *{pointer-events:none;-webkit-user-select:none;user-select:none}.chat-mermaid-card__footer{background-color:#f2f2f2;border-top:1px solid #e0e0e0;border-radius:0 0 8px 8px;padding:16px}.chat-mermaid-card__footer__content{justify-content:space-between;align-items:center;gap:8px;display:flex}.chat-mermaid-card__footer__title{color:#333;align-items:center;gap:4px;font-size:16px;font-weight:600;display:flex}.chat-mermaid-card__footer svg path{fill:#333}.chat-dropdown{background-color:#fff;border:1px solid #e0e0e0;border-radius:8px;flex-direction:column;animation:.2s ease-out slideDown;display:flex;box-shadow:0 5px 20px rgba(169,155,144,.2)}.chat-dropdown__header{border-bottom:1px solid #e0e0e0;justify-content:space-between;align-items:flex-start;padding:8px 16px;display:flex}.chat-dropdown__header-content{flex:1}.chat-dropdown__title{color:#333;font-size:18px;font-weight:600;line-height:28px;font-family:var(--font-first);letter-spacing:normal;margin:0}.chat-dropdown__subtitle{color:#767676;font-size:18px;font-weight:500;line-height:24px;font-family:var(--font-second);letter-spacing:normal;margin:0}.chat-dropdown__content{flex:1;min-height:60px;max-height:60vh;padding:0 8px;overflow-x:hidden;overflow-y:auto}.chat-dropdown__footer{border-top:1px solid #e0e0e0;padding:12px 16px}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.ai-revision-loading{z-index:2147483647;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:fixed;top:0;left:0}.ai-revision-loading__backdrop{background:var(--color-background);width:100%;height:100%;position:absolute;top:0;left:0}.ai-revision-loading__content{flex-direction:column;justify-content:center;align-items:center;gap:16px;padding:24px;display:flex;position:relative}.ai-revision-loading__bot-container{justify-content:center;align-items:center;display:flex;position:relative}.ai-revision-loading__bot{width:120px;height:auto;animation:2s ease-in-out infinite ai-revision-loading-bounce}.ai-revision-loading__stars{pointer-events:none;width:100%;height:100%;position:absolute}.ai-revision-loading__star{color:var(--color-first);font-size:28px;animation:1.5s ease-in-out infinite ai-revision-loading-sparkle;position:absolute}.ai-revision-loading__star--1{animation-delay:0s;top:-10px;right:-15px}.ai-revision-loading__star--2{animation-delay:.75s;bottom:10px;left:-20px}.ai-revision-loading__text{font-family:var(--font-first);color:#4e4e4e;text-align:center;max-width:300px;font-size:22px;animation:.3s ease-in-out ai-revision-loading-fade}@keyframes ai-revision-loading-bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes ai-revision-loading-sparkle{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}@keyframes ai-revision-loading-fade{0%{opacity:0}to{opacity:1}}.student-xray-drawer__header{border-bottom:1px solid #f2f2f2;justify-content:space-between;align-items:center;padding:8px;display:flex}.student-xray-drawer__student-info{align-items:center;gap:8px;display:flex}.student-xray-drawer__student-text{flex-direction:column;display:flex}.student-xray-drawer__student-name{font-family:var(--font-first-semi);color:#333;font-size:16px;font-weight:600;line-height:26px}.student-xray-drawer__student-class{font-family:var(--font-second);color:#767676;font-size:14px;font-weight:500;line-height:20px}.student-xray-drawer__close-btn{cursor:pointer;color:#767676;background:0 0;border:none;justify-content:center;align-items:center;width:24px;height:24px;padding:0;display:flex}.student-xray-drawer__close-btn:hover{color:#333}.student-xray-drawer__body{flex-direction:column;gap:24px;padding:8px 16px;display:flex;overflow-y:auto}.student-xray-drawer__stats{gap:8px;display:flex}.student-xray-drawer__stat-card{border:1px solid #e0e0e0;border-radius:8px;flex:1;padding:8px 16px}.student-xray-drawer__stat-label{font-family:var(--font-second);color:#4e4e4e;font-size:14px;font-weight:500;line-height:20px}.student-xray-drawer__stat-value-row{align-items:baseline;gap:4px;display:flex}.student-xray-drawer__stat-value{font-family:var(--font-second);color:#333;font-size:18px;font-weight:700;line-height:26px}.student-xray-drawer__stat-unit{font-family:var(--font-second);color:#767676;font-size:14px;font-weight:500;line-height:20px}.student-xray-drawer__quality-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.student-xray-drawer__quality-label{font-family:var(--font-second);color:#333;font-size:16px;font-weight:500;line-height:24px}.student-xray-drawer__quality-percentage{font-family:var(--font-second);color:#6b0a6b;font-size:14px;font-weight:700;line-height:17px}.student-xray-drawer__quality-bar{background-color:#f2f2f2;border-radius:4px;height:8px;margin-bottom:8px;overflow:hidden}.student-xray-drawer__quality-bar-fill{background-color:#e047e0;border-radius:4px;height:100%}.student-xray-drawer__quality-description{font-family:var(--font-second);color:#4e4e4e;font-size:14px;font-weight:500;line-height:20px}.student-xray-drawer__intent-section-title{font-family:var(--font-second);color:#333;margin-bottom:8px;font-size:16px;font-weight:500;line-height:24px}.student-xray-drawer__intent-list{flex-direction:column;gap:16px;display:flex}.student-xray-drawer__intent-row{flex-direction:column;gap:8px;display:flex}.student-xray-drawer__intent-header{justify-content:space-between;align-items:center;display:flex}.student-xray-drawer__intent-label{font-family:var(--font-second);color:#4e4e4e;font-size:14px;font-weight:500;line-height:20px}.student-xray-drawer__intent-percentage{font-family:var(--font-second);font-size:14px;font-weight:700;line-height:17px}.student-xray-drawer__intent-bar{background-color:#f2f2f2;border-radius:4px;height:8px;overflow:hidden}.student-xray-drawer__intent-bar-fill{border-radius:4px;height:100%}.student-xray-drawer__intent-row--color-1 .student-xray-drawer__intent-percentage{color:#6b0a6b}.student-xray-drawer__intent-row--color-1 .student-xray-drawer__intent-bar-fill{background-color:#e047e0}.student-xray-drawer__intent-row--color-2 .student-xray-drawer__intent-percentage{color:#70022e}.student-xray-drawer__intent-row--color-2 .student-xray-drawer__intent-bar-fill{background-color:#e3366f}.student-xray-drawer__intent-row--color-3 .student-xray-drawer__intent-percentage{color:#662014}.student-xray-drawer__intent-row--color-3 .student-xray-drawer__intent-bar-fill{background-color:#ff7450}.student-xray-drawer__intent-row--color-4 .student-xray-drawer__intent-percentage{color:#664306}.student-xray-drawer__intent-row--color-4 .student-xray-drawer__intent-bar-fill{background-color:#ffb233}.student-xray-drawer__intent-row--color-5 .student-xray-drawer__intent-percentage{color:#305001}.student-xray-drawer__intent-row--color-5 .student-xray-drawer__intent-bar-fill{background-color:#91d432}.student-xray-drawer__intent-row--color-6 .student-xray-drawer__intent-percentage{color:#05490b}.student-xray-drawer__intent-row--color-6 .student-xray-drawer__intent-bar-fill{background-color:#36c03c}.student-xray-drawer__intent-row--color-7 .student-xray-drawer__intent-percentage{color:#014d5c}.student-xray-drawer__intent-row--color-7 .student-xray-drawer__intent-bar-fill{background-color:#3ce4f1}.student-xray-drawer__intent-row--color-8 .student-xray-drawer__intent-percentage{color:#0a3366}.student-xray-drawer__intent-row--color-8 .student-xray-drawer__intent-bar-fill{background-color:#4eabff}.stat-card{--stat-card-icon-size:36px;--stat-card-toggle-size:24px;border:1px solid #e0e0e0;border-radius:8px;align-items:center;gap:8px;padding:8px 16px;display:flex}.stat-card--expandable{flex-direction:column;align-items:stretch}.stat-card__row{align-items:center;gap:16px;width:100%;display:flex}.stat-card__row--clickable{font:inherit;color:inherit;text-align:left;cursor:pointer;background:0 0;border:none;border-radius:8px;margin:0;padding:0}.stat-card__row--clickable:hover .stat-card__toggle{color:#333}.stat-card__row--clickable:focus-visible{outline:2px solid var(--color-first);outline-offset:2px}.stat-card__icon{width:var(--stat-card-icon-size);height:var(--stat-card-icon-size);border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.stat-card__icon--success{color:#28a773;background-color:#e6fbfc}.stat-card__icon--success .icon--color-default.icon--lib-skin path{fill:#02788a}.stat-card__icon--rollback{color:#e04949;background-color:#ffeaed}.stat-card__icon--rollback .icon--color-default.icon--lib-skin path{fill:#97033a}.stat-card__icon--timeline{color:#8e0d8e;background-color:#fff1ff}.stat-card__icon--timeline .icon--color-default.icon--lib-core path{fill:#8e0d8e}.stat-card__icon--time{color:#0a6910;background-color:#d7fedb}.stat-card__icon--time .icon--color-default.icon--lib-skin g,.stat-card__icon--time .icon--color-default.icon--lib-skin path{fill:#0a6910}.stat-card__icon--group{background-color:#fffad6}.stat-card__icon--group .icon--color-default.icon--lib-skin path,.stat-card__icon--group .icon--color-default.icon--lib-core path{fill:#996008}.stat-card__icon--mastery{color:#8e0d8e;background-color:#fff1ff}.stat-card__icon--mastery .icon--color-default.icon--lib-skin path,.stat-card__icon--mastery .icon--color-default.icon--lib-core path{fill:#8e0d8e}.stat-card__description{font-family:var(--font-second);color:#4e4e4e;background-color:#f9f9f9;border-radius:8px;margin:0;padding:8px;font-size:14px;line-height:20px}.stat-card__info{flex:1;gap:8px;min-width:0;display:flex}.stat-card--layout-inline .stat-card__info{flex-direction:row-reverse;justify-content:flex-end;align-items:baseline}.stat-card--layout-spread{gap:0}.stat-card--layout-spread .stat-card__info{flex-direction:row;justify-content:space-between}.stat-card--layout-stacked .stat-card__info{flex-direction:column;align-items:flex-start;gap:2px}.stat-card__value{font-family:var(--font-second);color:#333;flex-shrink:0;font-weight:700}.stat-card--layout-inline .stat-card__value,.stat-card--layout-spread .stat-card__value{font-size:18px;line-height:26px}.stat-card__label{font-family:var(--font-second);color:#4e4e4e;font-size:14px;line-height:20px}.stat-card__toggle{width:var(--stat-card-toggle-size);height:var(--stat-card-toggle-size);cursor:pointer;color:#767676;background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;padding:0;transition:transform .4s;display:flex}.stat-card__toggle svg{width:var(--stat-card-toggle-size);height:var(--stat-card-toggle-size)}.stat-card__toggle--expanded{transform:rotate(180deg)}.prerequisite-list{flex-direction:column;gap:8px;display:flex}.prerequisite-list__description{font-family:var(--font-second);color:#4e4e4e;background-color:#f9f9f9;border-radius:8px;margin:0;padding:8px;font-size:14px;line-height:20px}.prerequisite-list__description strong{font-family:var(--font-second-bold)}.prerequisite-list__items{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.prerequisite-list__item{flex-direction:column;gap:4px;display:flex}.prerequisite-list__item:not(:last-child){border-bottom:1px solid #e0e0e0;padding-bottom:8px}.vertical-kc-timeline{--timeline-marker-width:16px;--timeline-dot-size:12px;--timeline-line-width:1px;background-color:#f9f9f9;border-radius:8px;flex-direction:column;gap:16px;margin:0;padding:8px;list-style:none;display:flex}.vertical-kc-timeline__item{grid-template-columns:auto var(--timeline-marker-width)1fr;min-height:var(--timeline-dot-size);align-items:center;gap:8px;display:grid;position:relative}.vertical-kc-timeline__date{text-align:right;font-family:var(--font-second);color:#4e4e4e;flex-direction:column;align-items:flex-end;min-width:111px;font-size:12px;line-height:18px;display:flex}.vertical-kc-timeline__item--last .vertical-kc-timeline__date{font-family:var(--font-second-bold)}.vertical-kc-timeline__marker{width:var(--timeline-marker-width);justify-content:center;align-self:stretch;align-items:center;height:100%;display:flex;position:relative}.vertical-kc-timeline__marker:after{content:"";width:var(--timeline-line-width);background-color:#8e0d8e;height:50%;position:absolute;top:50%;left:50%;transform:translate(-50%)}.vertical-kc-timeline__item:not(.vertical-kc-timeline__item--last) .vertical-kc-timeline__marker:after{height:calc(100% + 16px)}.vertical-kc-timeline__item:first-child .vertical-kc-timeline__marker:before{content:"";width:var(--timeline-line-width);background-color:#8e0d8e;height:50%;position:absolute;top:0;left:50%;transform:translate(-50%)}.vertical-kc-timeline__dot{width:var(--timeline-dot-size);height:var(--timeline-dot-size);z-index:1;background-color:#e875e6;border-radius:50%}.vertical-kc-timeline__item--last .vertical-kc-timeline__dot{background-color:#b00fb0;box-shadow:0 0 0 3px rgba(209,22,218,.15)}.vertical-kc-timeline__status-label{font-family:var(--font-second);color:#333;font-size:16px;line-height:24px}.vertical-kc-timeline__item--last .vertical-kc-timeline__status-label{font-family:var(--font-second-bold)}