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var(--ui-color-border);border-radius:var(--ui-radius-button);font-size:var(--ui-font-caption);color:var(--ui-color-text-secondary);cursor:pointer;transition:all var(--ui-transition-fast);display:flex;align-items:center;gap:4px}.tech-input-ghost-btn:hover:not(:disabled){background:rgba(0,0,0,.03);border-color:rgba(0,0,0,.1);color:var(--ui-color-primary)}.tech-input-ghost-btn:disabled{opacity:.5;cursor:not-allowed}.tech-input-send-btn{padding:8px 20px;background:var(--ui-color-primary);border:none;border-radius:var(--ui-radius-button);font-size:var(--ui-font-body);font-weight:var(--ui-weight-semibold);color:#fff;cursor:pointer;transition:opacity var(--ui-transition-fast)}.tech-input-send-btn:hover:not(:disabled){opacity:.9}.tech-input-send-btn:disabled{opacity:.6;cursor:not-allowed}.tech-progress-panel{padding:var(--ui-spacing-lg)}.tech-progress-stage{display:flex;align-items:center;gap:var(--ui-spacing-md);padding:10px 0}.tech-progress-stage-icon{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:var(--ui-font-body)}.tech-progress-stage-icon.done{background:var(--ui-color-primary-light);color:var(--ui-color-success)}.tech-progress-stage-icon.active{background:rgba(0,0,0,.05);color:var(--ui-color-primary)}.tech-progress-stage-icon.pending{background:var(--ui-color-bg);color:var(--ui-color-text-muted)}.tech-progress-stage-text{flex:1}.tech-progress-stage-label{font-size:var(--ui-font-caption);font-weight:var(--ui-weight-medium);color:var(--ui-color-text)}.tech-progress-stage-desc{font-size:var(--ui-font-tag);color:var(--ui-color-text-muted)}@media (max-width:1024px){.teacher-content-card{margin:var(--ui-spacing-md);padding:var(--ui-spacing-lg)}}@media (max-width:768px){.teacher-header{padding:10px var(--ui-spacing-lg)}.teacher-content-card{margin:var(--ui-spacing-sm);padding:var(--ui-spacing-md)}.tech-mode-cards{grid-template-columns:1fr}.tech-mode-card{flex-direction:row;justify-content:flex-start;padding:var(--ui-spacing-md)}.tech-mode-card-icon{width:40px;height:40px;font-size:18px}.tech-chat-welcome{padding:32px var(--ui-spacing-lg)}.tech-chat-message{max-width:95%}.tech-chat-message-image{max-width:240px}.tech-input-box-footer{flex-direction:column;gap:8px;align-items:flex-start}.tech-input-box-actions{width:100%;justify-content:space-between}.tech-stat-card{padding:var(--ui-spacing-md)}.tech-stat-card .ant-statistic-title{font-size:var(--ui-font-tag)}.tech-stat-card .ant-statistic-content{font-size:18px}.tech-content-card .ant-form-item-label{padding-bottom:4px}.tech-content-card .ant-form-item-label>label{font-size:var(--ui-font-caption)}.tech-filter-card{padding:var(--ui-spacing-md)}.mobile-action-buttons{display:flex;gap:8px;width:100%}.mobile-action-buttons .ant-btn{flex:1;font-size:var(--ui-font-caption)}.grading-student-list{max-height:40vh}.grading-main-content{padding:var(--ui-spacing-md)}.grading-score-section{display:flex;flex-direction:column;gap:var(--ui-spacing-md)}.grading-score-section .ant-input-number{width:100%}.paper-selector-mobile .ant-modal-content{margin:8px;max-height:80vh}.paper-selector-mobile .ant-modal-body{max-height:60vh;overflow-y:auto}.tech-stat-grid{grid-template-columns:repeat(2,1fr);gap:8px}.tech-stat-grid>.tech-stat-card{margin-bottom:0}.assignment-list-item{margin-bottom:var(--ui-spacing-md)}.assignment-list-item .ant-card-body{padding:var(--ui-spacing-md)}.assignment-list-item .ant-card-meta-title{font-size:var(--ui-font-body)}.assignment-list-item .ant-card-meta-description{font-size:var(--ui-font-tag)}.assignment-list-item .ant-card-actions li{margin:8px 0}.assignment-list-item .ant-card-actions .ant-btn{padding:0 8px;font-size:var(--ui-font-tag)}.tech-empty-state{padding:32px var(--ui-spacing-lg)}.tech-empty-state .ant-empty-description{font-size:var(--ui-font-body)}.grading-image-preview{max-height:300px;-o-object-fit:contain;object-fit:contain}.grading-image-container{padding:8px;border-radius:var(--ui-radius-button)}.mobile-progress-compact .ant-progress-text{font-size:var(--ui-font-tag)}}@supports (padding-bottom:env(safe-area-inset-bottom)){.teacher-bottom-nav{padding-bottom:env(safe-area-inset-bottom)}}@media (max-width:576px){.mobile-form-compact .ant-form-item{margin-bottom:var(--ui-spacing-lg)}.mobile-form-compact .ant-form-item-label{padding-bottom:2px}.mobile-form-compact .ant-input,.mobile-form-compact .ant-picker,.mobile-form-compact .ant-select-selector{font-size:var(--ui-font-section-title)}.mobile-fixed-footer{position:fixed;bottom:60px;left:0;right:0;background:hsla(0,0%,100%,.98);backdrop-filter:blur(12px);padding:var(--ui-spacing-md) var(--ui-spacing-lg);padding-bottom:calc(12px + env(safe-area-inset-bottom, 0));border-top:1px solid var(--ui-color-border);z-index:50;display:flex;gap:8px;box-shadow:0 -4px 20px rgba(0,0,0,.04)}.mobile-fixed-footer .ant-btn{flex:1;height:44px;font-size:15px;font-weight:var(--ui-weight-semibold);border-radius:var(--ui-radius-button)}}@media (hover:none) and (pointer:coarse){.tech-card-hover:active{transform:scale(.98)}.teacher-bottom-item{min-width:64px;min-height:48px}.ant-btn,.ant-input,.ant-select-selector{min-height:44px}}@media (max-width:768px) and (orientation:landscape){.tech-stat-grid{grid-template-columns:repeat(4,1fr)}.grading-student-list{max-height:50vh}}