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0}.chat-mode-tab:not(:first-child){border-left:none}.chat-mode-tab.active{background:#3b82f6;color:#fff;border-color:#3b82f6;box-shadow:0 0 12px #3b82f666}.chat-mode-tab[data-mode=grade].active{background:#10b981;border-color:#10b981;box-shadow:0 0 12px #10b98166}.chat-mode-tab#chat-preview-btn.active{background:#06b6d4;color:#fff;border-color:#06b6d4;box-shadow:0 0 12px #06b6d466}.chat-mode-tab#chat-review-btn.active{background:#8b5cf6;color:#fff;border-color:#8b5cf6;box-shadow:0 0 12px #8b5cf666}.chat-mode-tab#chat-exam-btn.active{background:#f59e0b;color:#fff;border-color:#f59e0b;box-shadow:0 0 12px #f59e0b66}.chat-mode-tab:not(.active):hover{background:#ffffff14;color:var(--text-primary);border-color:var(--text-secondary)}.chat-mode-tab#chat-listen-btn:not(.active){background:#f43f5e1a;color:#be123c;border-color:#f43f5e73}.chat-mode-tab#chat-listen-btn:not(.active):hover{background:#f43f5e33;color:#be123c;border-color:#f43f5ea6}.chat-mode-tab#chat-preview-btn:not(.active){background:#06b6d41a;color:#0e7490;border-color:#06b6d473}.chat-mode-tab[data-mode=grade]:not(.active){background:#10b9811a;color:#047857;border-color:#10b98173}.chat-mode-tab[data-mode=diagnosis]:not(.active){background:#3b82f61a;color:#1d4ed8;border-color:#3b82f673}.chat-mode-tab#chat-review-btn:not(.active){background:#8b5cf61a;color:#6d28d9;border-color:#8b5cf673}.chat-mode-tab#chat-exam-btn:not(.active){background:#f59e0b1f;color:#b45309;border-color:#f59e0b80}.chat-mode-tab#chat-preview-btn:not(.active):hover{background:#06b6d433;color:#0e7490;border-color:#06b6d4a6}.chat-mode-tab[data-mode=grade]:not(.active):hover{background:#10b98133;color:#047857;border-color:#10b981a6}.chat-mode-tab[data-mode=diagnosis]:not(.active):hover{background:#3b82f633;color:#1d4ed8;border-color:#3b82f6a6}.chat-mode-tab#chat-review-btn:not(.active):hover{background:#8b5cf633;color:#6d28d9;border-color:#8b5cf6a6}.chat-mode-tab#chat-exam-btn:not(.active):hover{background:#f59e0b38;color:#b45309;border-color:#f59e0bb3}[data-theme=dark] .chat-mode-tab#chat-preview-btn:not(.active){background:#06b6d429;color:#67e8f9}[data-theme=dark] .chat-mode-tab[data-mode=grade]:not(.active){background:#10b98129;color:#6ee7b7}[data-theme=dark] .chat-mode-tab[data-mode=diagnosis]:not(.active){background:#3b82f629;color:#93c5fd}[data-theme=dark] .chat-mode-tab#chat-review-btn:not(.active){background:#8b5cf629;color:#c4b5fd}[data-theme=dark] .chat-mode-tab#chat-exam-btn:not(.active){background:#f59e0b29;color:#fcd34d}[data-theme=dark] .chat-mode-tab#chat-listen-btn:not(.active){background:#f43f5e29;color:#fda4af}[data-theme=dark] .mistake-delete-btn{background:#ffffff14;color:var(--text-secondary)}[data-theme=dark] .mistake-delete-btn:hover{background:#ffffff24;color:var(--text-primary)}.grade-badge{display:inline-block;background:#10b981;color:#fff;font-size:11px;font-weight:600;padding:1px 6px;border-radius:4px;margin-right:4px;vertical-align:middle}.grade-mark-correct{color:#10b981;font-weight:700;font-size:1.1em}.grade-mark-wrong{color:#ef4444;font-weight:700;font-size:1.1em}.grade-no-option{background:#faf5ff;border-left:3px solid #8b5cf6}[data-theme=dark] .grade-no-option{background:#8b5cf61a}.grade-mark-no-option{color:#8b5cf6;font-weight:700;font-size:1.1em}.stat-no-option{color:#8b5cf6;font-weight:600}.grade-thinking{color:#6b7280;font-size:13px;font-style:italic}.grade-summary-header{margin-bottom:8px;padding:8px 12px;border-radius:8px;background:var(--chat-ai-bg, #f0fdf4);color:var(--text-primary, #1f2937);font-weight:600}.vg-summary-card{margin:8px 0 12px;padding:16px;border-radius:12px;background:linear-gradient(135deg,#6366f10f,#10b9810f);border:1px solid rgba(99,102,241,.15)}.vg-summary-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.vg-summary-score{display:flex;align-items:baseline;gap:4px}.vg-summary-score-num{font-size:32px;font-weight:700;line-height:1;color:var(--text-primary, #1f2937)}.vg-summary-score-total{font-size:18px;font-weight:500;color:#9ca3af}.vg-summary-pct{font-size:14px;font-weight:600;padding:2px 8px;border-radius:6px}.vg-summary-pct.high{background:#10b9811f;color:#059669}.vg-summary-pct.mid{background:#f59e0b1f;color:#d97706}.vg-summary-pct.low{background:#ef44441f;color:#dc2626}[data-theme=dark] .vg-summary-pct.high{color:#34d399}[data-theme=dark] .vg-summary-pct.mid{color:#fbbf24}[data-theme=dark] .vg-summary-pct.low{color:#f87171}.vg-summary-stats{display:flex;gap:12px}.vg-stat{display:flex;align-items:center;gap:4px;font-size:13px;font-weight:600}.vg-stat-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.vg-stat-dot.correct{background:#10b981}.vg-stat-dot.wrong{background:#ef4444}.vg-stat-dot.warning{background:#f59e0b}.vg-stat-dot.failed{background:#6b7280}.vg-stat-dot.no-option{background:#8b5cf6}.vg-stat-dot.skipped{background:#9ca3af}.vg-stat-count{color:var(--text-primary, #1f2937)}.vg-stat-label{color:var(--text-secondary, #6b7280);font-weight:400}.grade-q-text{margin:4px 0;font-size:13px;line-height:1.5;color:var(--text-secondary, #6b7280);min-width:0;max-width:100%;overflow-wrap:break-word;word-break:break-word}.grade-question-image,.grade-answer-image{cursor:zoom-in}.grade-image-lightbox{position:fixed;inset:0;z-index:100000;background:#000000db;display:flex;align-items:center;justify-content:center}.grade-image-lightbox .glb-scrim{position:absolute;inset:0;cursor:zoom-out}.grade-image-lightbox .glb-body{position:relative;max-width:94vw;max-height:94vh;display:flex;flex-direction:column;align-items:center;gap:8px;padding:10px}.grade-image-lightbox .glb-body img{max-width:94vw;max-height:88vh;-o-object-fit:contain;object-fit:contain;border-radius:6px;background:#fff}.grade-image-lightbox .glb-page{color:#ffffffd9;font-size:12px}.grade-image-lightbox .glb-close{position:fixed;top:16px;right:20px;width:38px;height:38px;border-radius:50%;border:none;background:#ffffff29;color:#fff;font-size:17px;cursor:pointer;z-index:2}.grade-image-lightbox .glb-toolbar{position:fixed;bottom:18px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:8px;z-index:3;background:#ffffff24;border-radius:999px;padding:6px 10px}.grade-image-lightbox .glb-tool{width:34px;height:34px;border-radius:50%;border:none;cursor:pointer;background:#fff3;color:#fff;font-size:17px;line-height:1}.grade-image-lightbox .glb-tool:hover{background:#ffffff57}.grade-image-lightbox .glb-zoom{color:#fff;font-size:13px;min-width:56px;text-align:center;font-variant-numeric:tabular-nums}.grade-image-lightbox .glb-scrim{z-index:1}.grade-image-lightbox .glb-scrim.glb-pan-active{cursor:grab}.grade-image-lightbox .glb-scrim.glb-pan-grabbing{cursor:grabbing}.grade-image-lightbox .glb-body img{transition:transform .12s ease;cursor:zoom-in;-webkit-user-select:none;-moz-user-select:none;user-select:none;-webkit-user-drag:none;transform-origin:center center;touch-action:none;will-change:transform}.grade-image-lightbox .glb-body img.glb-zoomed{cursor:grab}.grade-image-lightbox .glb-body img.glb-zooming{transition:none}.grade-question-images{display:flex;flex-direction:column;gap:8px;margin:8px 0}.grade-question-image{border:1px solid var(--border-primary, #e5e7eb);border-radius:8px;overflow:hidden;background:var(--bg-secondary, #f9fafb)}.grade-question-image img{display:block;width:100%;height:auto;max-height:420px;-o-object-fit:contain;object-fit:contain}.grade-question-images{align-items:center}.grade-question-image,.grade-answer-image{max-width:640px;margin-left:auto;margin-right:auto}.grade-question-image-label,.grade-image-page{padding:4px 8px;font-size:11px;color:var(--text-tertiary, #9ca3af);background:var(--bg-tertiary, #f3f4f6);text-align:center}.grade-answer-images{display:flex;flex-direction:column;gap:8px;margin:6px 0}.grade-answer-image{border:1px solid var(--border-primary, #e5e7eb);border-radius:8px;overflow:hidden;background:var(--bg-secondary, #f9fafb)}.grade-answer-image img{display:block;width:100%;height:auto;max-height:420px;-o-object-fit:contain;object-fit:contain}.grade-wrong-subject{display:inline-block;font-size:11px;padding:1px 6px;border-radius:4px;background:var(--badge-bg, #e5e7eb);color:var(--badge-text, #4b5563);margin-left:6px}.grade-options{margin:6px 0 8px;padding:8px 12px;background:var(--bg-secondary, #f9fafb);border-radius:6px;font-size:13px;line-height:1.6;color:var(--text-primary, #1f2937)}.grade-option{margin:2px 0;padding:2px 0}.grade-option.correct{color:#059669;font-weight:500}.grade-option.wrong{color:#dc2626;font-weight:500}.vg-group-header{display:flex;align-items:center;gap:6px;margin:12px 0 6px;padding:0 2px;font-size:13px;font-weight:600;color:var(--text-secondary, #6b7280)}.vg-group-header.wrong{color:#ef4444}.vg-group-header.warning{color:#f59e0b}.vg-group-header.correct{color:#10b981}.vg-group-header.failed{color:#6b7280}.vg-group-header.no-option{color:#8b5cf6}[data-theme=dark] .vg-group-header.wrong{color:#f87171}[data-theme=dark] .vg-group-header.warning{color:#fbbf24}[data-theme=dark] .vg-group-header.correct{color:#34d399}[data-theme=dark] .vg-group-header.failed{color:#9ca3af}[data-theme=dark] .vg-group-header.no-option{color:#a78bfa}.vg-group-count{font-size:11px;font-weight:500;padding:1px 6px;border-radius:10px;background:#6b72801a;color:var(--text-secondary, #6b7280)}.vg-group-header.wrong .vg-group-count{background:#ef44441a;color:#ef4444}.vg-group-header.warning .vg-group-count{background:#f59e0b1a;color:#f59e0b}.vg-group-header.correct .vg-group-count{background:#10b9811a;color:#10b981}.vg-group-header.failed .vg-group-count{background:#6b72801a;color:#6b7280}.vg-group-header.no-option .vg-group-count{background:#8b5cf61a;color:#8b5cf6}[data-theme=dark] .vg-group-header.wrong .vg-group-count{color:#f87171}[data-theme=dark] .vg-group-header.warning .vg-group-count{color:#fbbf24}[data-theme=dark] .vg-group-header.correct .vg-group-count{color:#34d399}[data-theme=dark] .vg-group-header.failed .vg-group-count{color:#9ca3af}[data-theme=dark] .vg-group-header.no-option .vg-group-count{color:#a78bfa}.grade-line-item{position:relative;margin:6px 0;padding:10px 12px 10px 16px;border-radius:10px;background:var(--chat-user-bg, #f9fafb);color:var(--text-primary, #1f2937);border-left:4px solid transparent;transition:box-shadow .2s ease;min-width:0;overflow-wrap:break-word;word-break:break-word}.grade-line-item+.grade-line-item{margin-top:34px;position:relative}.grade-line-item+.grade-line-item:before{content:"〰 ⸬ 〰";position:absolute;top:-27px;left:50%;transform:translate(-50%);font-size:13px;letter-spacing:9px;color:#505a6eb8;background:var(--bg-primary, #ffffff);padding:2px 12px;border-radius:20px;border:1px solid rgba(120,130,150,.28);box-shadow:0 1px 3px #0000000d;line-height:1;white-space:nowrap;z-index:1}.grade-line-item+.grade-line-item:after{content:"";position:absolute;top:-16px;left:12px;right:12px;height:3px;border-radius:3px;background:repeating-linear-gradient(to right,rgba(120,130,150,.4) 0,rgba(120,130,150,.4) 6px,transparent 6px,transparent 12px)}.grade-line-item .grade-q-text,.grade-line-item .grade-line-answer,.grade-line-item .grade-line-student-answer,.grade-line-item .grade-solution .solution-content,.grade-line-item .grade-question-images,.grade-line-item .grade-question-crop{min-width:0;overflow-wrap:break-word;word-break:break-word}.grade-line-item:hover{box-shadow:0 2px 8px #0000000f}.grade-line-item .vg-line-warmtip{font-size:13px;line-height:1.4;margin:2px 0 6px;padding:7px 11px;border-radius:8px;background:linear-gradient(135deg,#ffedd5bf,#fef3c7b3);border:1px solid rgba(251,146,60,.25);border-left:3px solid #fb923c;color:#9a3412;box-shadow:0 1px 2px #fb923c14}.grade-line-item.correct{border-left-color:#10b981;background:#10b9810a}.grade-line-item.wrong{border-left-color:#ef4444;background:#ef44440a}.grade-line-item.warning{border-left-color:#f59e0b;background:#f59e0b0a}.grade-line-item.failed{border-left-color:#6b7280;background:#6b72800a}.grade-line-item.no-option{border-left-color:#8b5cf6;background:#8b5cf60a}.grade-line-item.failed .vg-line-header{opacity:.7}[data-theme=dark] .grade-line-item{background:#ffffff0a}[data-theme=dark] .grade-line-item.correct{border-left-color:#34d399;background:#10b9810f}[data-theme=dark] .grade-line-item.wrong{border-left-color:#f87171;background:#ef44440f}[data-theme=dark] .grade-line-item.warning{border-left-color:#fbbf24;background:#f59e0b0f}[data-theme=dark] .grade-line-item.no-option{border-left-color:#a78bfa;background:#8b5cf614}[data-theme=dark] .grade-line-item.failed{border-left-color:#9ca3af;background:#6b728014}.grade-line-item .vg-submarks{margin:2px 0 8px;padding:8px 10px 6px;border-radius:10px;border:1px solid var(--border-color, rgba(15, 23, 42, .08));background:var(--bg-secondary, rgba(15, 23, 42, .02))}.grade-line-item .vg-submarks-title{font-size:12px;font-weight:600;color:var(--text-muted, #64748b);margin-bottom:6px;letter-spacing:.02em}.grade-line-item .vg-submark-row{display:block;padding:8px 0;font-size:13px;line-height:1.55}.grade-line-item .vg-submark-row+.vg-submark-row{border-top:1px dashed var(--border-color, rgba(15, 23, 42, .08))}.grade-line-item .vg-submark-head{display:flex;align-items:center;gap:8px;margin-bottom:4px}.grade-line-item .vg-submark-icon{flex:0 0 auto;width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;font-size:11px;font-weight:700}.grade-line-item .vg-submark-label{flex:0 0 auto;font-weight:600;color:var(--text-primary, #0f172a)}.grade-line-item .vg-submark-body{padding-left:26px}.grade-line-item .vg-sub-question{color:var(--text-primary, #0f172a);word-break:break-word}.grade-line-item .vg-sub-answer{margin-top:4px;padding:6px 8px;border-radius:8px;background:var(--bg-tertiary, rgba(15, 23, 42, .03));border:1px solid var(--border-color, rgba(15, 23, 42, .07));color:var(--text-secondary, #334155);word-break:break-word}.grade-line-item .vg-sub-answer-tag{display:inline-block;font-size:11px;font-weight:600;color:var(--text-muted, #94a3b8);margin-right:6px}.grade-line-item .vg-sub-no-answer{color:var(--text-muted, #94a3b8);font-style:italic}.grade-line-item .vg-sub-comment{margin-top:5px;color:var(--text-secondary, #334155);word-break:break-word}.grade-line-item .vg-sub-solution{margin-top:6px;border:1px solid var(--border-color, rgba(15, 23, 42, .09));border-left:3px solid var(--accent, #6366f1);border-radius:8px;background:var(--bg-tertiary, rgba(15, 23, 42, .03));overflow:hidden}.grade-line-item .vg-sub-solution>summary{cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;padding:6px 10px;font-size:12px;font-weight:600;color:var(--accent, #6366f1)}.grade-line-item .vg-sub-solution>summary:hover{background:var(--bg-secondary, rgba(15, 23, 42, .04))}.grade-line-item .vg-sub-solution-body{padding:6px 10px 8px;border-top:1px dashed var(--border-color, rgba(15, 23, 42, .08));color:var(--text-secondary, #334155);font-size:13px;word-break:break-word}.grade-line-item .vg-sub-solutions{display:flex;flex-direction:column;gap:8px}.grade-line-item .vg-sub-solutions-title{font-size:12px;font-weight:700;color:var(--text-secondary, #334155);margin-bottom:2px}.grade-line-item .solution-sub-solutions{display:flex;flex-direction:column;gap:10px;margin-bottom:10px}.grade-line-item .solution-full{border-top:1px dashed var(--border-color, rgba(15, 23, 42, .1));padding-top:10px}.grade-line-item .sub-ok .vg-submark-icon{background:#10b98124;color:#059669}.grade-line-item .sub-wrong .vg-submark-icon{background:#ef444424;color:#dc2626}.grade-line-item .sub-partial .vg-submark-icon{background:#f59e0b29;color:#d97706}[data-theme=dark] .grade-line-item .sub-ok .vg-submark-icon{color:#34d399}[data-theme=dark] .grade-line-item .sub-wrong .vg-submark-icon{color:#f87171}[data-theme=dark] .grade-line-item .sub-partial .vg-submark-icon{color:#fbbf24}[data-theme=dark] .grade-line-item .vg-sub-answer{background:#ffffff0a;border-color:#ffffff14}#streaming-grade-container,.streaming-grade-container{padding:8px 0}.streaming-grade-fullscreen{position:fixed;inset:0;z-index:99995;display:none;background:var(--bg-primary, #fff);overflow-y:auto;padding:10px 14px 72px;box-sizing:border-box}.streaming-grade-fullscreen.streaming-grade-fullscreen-show{display:block}.streaming-grade-fullscreen .streaming-grade-header{padding:4px 2px;background:var(--bg-primary, #fff);display:flex;align-items:center;gap:8px}.streaming-grade-fullscreen .streaming-fs-progress{position:fixed;top:45%;left:50%;transform:translate(-50%,-50%);z-index:4;width:min(430px,90vw);margin:0;padding:18px 20px;border-radius:var(--mkt-card-radius, 20px);background:linear-gradient(160deg,#1e2d4a,#0d1117 72%);border:1px solid rgba(79,70,229,.5);box-shadow:0 0 0 1px #fbbf241a,0 20px 50px #0d111747}.streaming-fs-progress-row{display:flex;align-items:center;justify-content:space-between;gap:8px}.streaming-fs-progress-title{font-size:18px;font-weight:800;color:#facc15;font-family:"Noto Serif 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h2{font-size:1.1rem}}@media(max-width:640px){.chat-panel{width:100%!important;height:100vh!important;height:100dvh!important;max-width:100%!important;overflow:hidden;display:flex;flex-direction:column}.chat-header{padding:6px 8px;gap:4px;flex-shrink:0;overflow:hidden}.chat-header-row{gap:2px!important;flex-wrap:nowrap;overflow:hidden;min-width:0}.chat-header-row>*{flex-shrink:0}.chat-tab-switcher{gap:1px}.chat-tab-btn{padding:3px 6px;font-size:11px}.chat-header-action-btn{padding:2px;width:28px;height:28px}.chat-header-action-btn svg{width:16px;height:16px}.chat-service-btn{padding:2px;width:28px;height:28px}.login-text{display:none}.wechat-login-header-btn{padding:3px 6px;min-width:auto;font-size:11px}#share-reward-btn{font-size:10px!important;padding:2px 5px!important}.buy-package-header-btn{font-size:13px;padding:2px 4px}.chat-title-text{font-size:13px;max-width:80px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.daily-quota-bar{padding:3px 8px;font-size:10px;flex-shrink:0;overflow:hidden}.subject-selector{padding:4px 0 2px;gap:2px}.subject-selector-label{font-size:10px}.subject-select-btn{padding:2px 5px;font-size:9px;border-radius:8px}.chat-messages{flex:1 1 0%;min-height:0;padding:6px 8px;overflow-y:auto;overflow-x:hidden}.chat-bubble{font-size:13px;line-height:1.6;padding:8px 10px;word-break:break-word;overflow-wrap:break-word}.chat-bubble-user{max-width:80%}.chat-bubble-ai{max-width:85%}.chat-bubble img,.chat-bubble pre,.chat-bubble code{max-width:100%;overflow-x:auto;word-break:break-all}.chat-input-area{flex-shrink:0;padding:4px 8px 6px}.chat-input-wrap{gap:4px;padding:3px 3px 3px 8px;border-radius:10px}.chat-input{font-size:14px;padding:4px 0;min-width:0}.chat-send-btn{width:34px;height:34px;border-radius:8px}.dashboard-overview{padding:10px 8px;gap:8px}.dashboard-metric{padding:8px;min-width:80px}.dashboard-metric-value{font-size:18px}.dashboard-metric-label{font-size:10px}.dashboard-subject-bar-wrap{padding:8px}.history-item{padding:10px}.history-item-preview{font-size:12px}.new-chat-confirm-dialog{padding:20px;margin:0 16px}.payment-modal-content,.share-reward-modal-content,.invite-parent-modal-content{max-width:100%;margin:0 8px;max-height:90vh;overflow-y:auto}.dark-card{padding:14px}}@media(max-width:374px){.subject-selector-label{display:none}.subject-select-btn{padding:2px 5px;font-size:9px}.chat-tab-btn{padding:3px 6px;font-size:10px}.dashboard-metric{min-width:65px;padding:6px}.dashboard-metric-value{font-size:16px}.chat-service-btn{display:none}}.chat-image-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;border:none;background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;cursor:pointer;transition:all .2s;flex-shrink:0;box-shadow:0 1px 4px #d9770640}.chat-image-btn:hover{background:linear-gradient(135deg,#fbbf24,#f59e0b);transform:translateY(-1px)}.chat-image-btn.grade-image-btn-highlight{width:100%;height:48px;border-radius:12px;background:linear-gradient(135deg,#10b981,#059669);color:#fff;font-size:16px;font-weight:600;gap:8px;border:2px dashed rgba(255,255,255,.3);margin:0}.chat-image-btn.grade-image-btn-highlight:hover{background:linear-gradient(135deg,#059669,#047857);border-color:#ffffff80}.chat-image-btn.grade-image-btn-highlight:before{content:"📷 上传试卷图片进行批改";font-size:15px;letter-spacing:.5px}.chat-image-btn.grade-image-btn-highlight .img-btn-caption{display:none}.dark .chat-image-btn.grade-image-btn-highlight{background:linear-gradient(135deg,#10b981,#059669);border-color:#fff3}.grade-quota-tip{display:flex;align-items:center;justify-content:center;padding:8px 12px;background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:8px;margin:4px 12px}.ocr-privacy-notice{display:flex;justify-content:center;padding:12px 0}.ocr-privacy-content{background:#1e1b4b;border:1px solid rgba(99,102,241,.3);border-radius:12px;padding:16px;max-width:280px;width:100%}.ocr-privacy-title{font-size:14px;font-weight:600;color:#e0e7ff;margin-bottom:8px}.ocr-privacy-text{font-size:12px;color:#a5b4fc;line-height:1.6;margin-bottom:12px}.ocr-privacy-actions{display:flex;gap:8px;justify-content:flex-end}.ocr-privacy-btn{padding:6px 14px;border-radius:8px;border:none;font-size:12px;cursor:pointer;transition:all .2s}.ocr-privacy-cancel{background:#ffffff1a;color:#a5b4fc}.ocr-privacy-cancel:hover{background:#ffffff26}.ocr-privacy-confirm{background:linear-gradient(135deg,#6366f1,#4f46e5);color:#fff}.ocr-privacy-confirm:hover{background:linear-gradient(135deg,#818cf8,#6366f1)}.ocr-preview-card{margin:8px 0;background:var(--bg-primary, #fff);border:1px solid var(--border-color, #e5e7eb);border-radius:12px;overflow:visible;max-width:min(95vw,740px);box-shadow:0 1px 3px #0000000f}.ocr-preview-card-split,.ocr-preview-card-direct{max-width:min(98vw,1180px)}.ocr-preview-header{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;font-size:13px;font-weight:500;color:var(--text-secondary, #6b7280);border-bottom:1px solid var(--border-color, #e5e7eb);border-radius:12px 12px 0 0;background:var(--bg-secondary, #f9fafb)}.ocr-preview-close{background:transparent;border:1px solid var(--border-color, #e5e7eb);color:var(--text-secondary, #6b7280);font-size:16px;font-weight:600;cursor:pointer;padding:2px 8px;border-radius:8px;line-height:1;transition:all .2s}.ocr-preview-close:hover{background:#ef444414;color:#ef4444;border-color:#ef44444d}.ocr-images-container{display:flex;gap:10px;overflow-x:auto;padding:12px 14px;scroll-behavior:smooth;-webkit-overflow-scrolling:touch}.ocr-images-container::-webkit-scrollbar{height:4px}.ocr-images-container::-webkit-scrollbar-track{background:transparent}.ocr-images-container::-webkit-scrollbar-thumb{background:var(--border-color, #d1d5db);border-radius:2px}.ocr-images-container.ocr-images-direct{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;width:100%}.ocr-images-container.ocr-images-direct .ocr-image-wrapper{width:100%;border-radius:14px}.ocr-images-container.ocr-images-direct .ocr-preview-img{width:100%;max-height:340px;-o-object-fit:contain;object-fit:contain}.ocr-preview-img{width:100%;max-height:180px;-o-object-fit:contain;object-fit:contain;background:var(--bg-tertiary, #f3f4f6);border-radius:6px}.ocr-compress-info{position:absolute;bottom:6px;right:6px;background:#0000008c;color:var(--success-color, #86efac);font-size:10px;padding:2px 6px;border-radius:4px;pointer-events:none;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.ocr-landscape-hint{position:absolute;bottom:6px;left:6px;max-width:calc(100% - 12px);background:#1e40afb8;color:#fff;font-size:10px;line-height:1.35;padding:3px 6px;border-radius:4px;pointer-events:none;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.ocr-image-wrapper{position:relative;flex-shrink:0;width:140px;border-radius:12px;overflow:hidden;border:1px solid var(--border-color, #e5e7eb);background:var(--bg-tertiary, #f3f4f6);transition:border-color .2s,box-shadow .2s}.ocr-image-wrapper:hover{border-color:var(--primary-color, #4f46e5);box-shadow:0 2px 8px #4f46e51f}.pgm-group-bar{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:10px 12px;background:#0f172a0f;border-radius:10px;margin:8px 12px 4px}.pgm-gb-label{font-size:12px;color:#64748b;font-weight:600}.pgm-gb-chip{font-size:12px;line-height:1;padding:6px 10px;border-radius:999px;border:1px solid #e2e8f0;background:#fff;color:#475569;cursor:pointer;transition:all .15s}.pgm-gb-chip.active{color:#fff;border-color:transparent}.pgm-gb-chip[data-g=blank_exam].active{background:#4f6ef7}.pgm-gb-chip[data-g=answer_card].active{background:#10b981}.pgm-gb-chip[data-g=direct_answer].active{background:#8b5cf6}.pgm-gb-chip:hover:not(.active){border-color:#a5b4fc;color:#3730a3}.pgm-gb-add{margin-left:auto;font-size:12px;font-weight:600;padding:6px 12px;border:none;border-radius:8px;color:#fff;background:linear-gradient(135deg,#3b82f6,#6366f1);cursor:pointer;transition:opacity .15s}.pgm-gb-add:hover{opacity:.9}.ocr-page-group-tag{position:absolute;top:6px;left:6px;z-index:3;font-size:11px;line-height:1;padding:3px 7px;border-radius:999px;color:#fff;font-weight:600;box-shadow:0 1px 4px #00000040;pointer-events:none}.ocr-image-wrapper[data-page-type=blank_exam] .ocr-page-group-tag{background:#4f6ef7}.ocr-image-wrapper[data-page-type=answer_card] .ocr-page-group-tag{background:#10b981}.ocr-image-wrapper[data-page-type=direct_answer] .ocr-page-group-tag{background:#8b5cf6}.ocr-image-wrapper[data-page-type=blank_exam]{border-color:#4f6ef7}.ocr-image-wrapper[data-page-type=answer_card]{border-color:#10b981}.ocr-image-wrapper[data-page-type=direct_answer]{border-color:#8b5cf6}.ocr-pg-zones{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(280px,100%),1fr));gap:16px;padding:14px 16px 12px}.ocr-pg-zone{min-width:0;display:flex;flex-direction:column;border:1px solid var(--border-color, #e5e7eb);border-radius:14px;background:var(--bg-secondary, #fafafa);overflow:hidden}.ocr-pg-zone[data-pg-zone=blank_exam]{border-color:#4f6ef766}.ocr-pg-zone[data-pg-zone=answer_card]{border-color:#10b98166}.ocr-pg-zone-head{display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--border-color, #eef2f7)}.ocr-pg-zone[data-pg-zone=blank_exam] .ocr-pg-zone-head{background:#eaf0ff}.ocr-pg-zone[data-pg-zone=answer_card] .ocr-pg-zone-head{background:#e6f9f0}.ocr-pg-zone-label{font-size:13px;font-weight:700;color:#1e293b}.ocr-pg-zone-count{min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:#1e293b;color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1}.ocr-pg-zone-body{display:flex;flex-wrap:wrap;gap:12px;padding:14px;align-content:flex-start;min-height:132px}.ocr-pg-zone-foot{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 14px;border-top:1px solid var(--border-color, #eef2f7);background:#fff}.ocr-pg-zone[data-pg-zone=blank_exam] .ocr-pg-zone-foot{border-top-color:#4f6ef740}.ocr-pg-zone[data-pg-zone=answer_card] .ocr-pg-zone-foot{border-top-color:#10b98140}.ocr-pg-zone-foot-label{font-size:12px;font-weight:700;color:#1e293b}.ocr-pg-zone[data-pg-zone=blank_exam] .ocr-pg-zone-foot-label{color:#3b4fd8}.ocr-pg-zone[data-pg-zone=answer_card] .ocr-pg-zone-foot-label{color:#0f9d6e}.ocr-pg-zone-add{font-size:12px;line-height:1;padding:7px 12px;border-radius:999px;border:none;color:#fff;font-weight:600;cursor:pointer;transition:opacity .15s}.ocr-pg-zone-add:hover{opacity:.9}.ocr-pg-zone[data-pg-zone=blank_exam] .ocr-pg-zone-add{background:#4f6ef7}.ocr-pg-zone[data-pg-zone=answer_card] .ocr-pg-zone-add{background:#10b981}.ocr-pg-zone-empty{flex:1 1 100%;display:flex;align-items:center;justify-content:center;min-height:96px;border:1.5px dashed var(--border-color, #cbd5e1);border-radius:10px;color:#94a3b8;font-size:12px;text-align:center;padding:10px}.ocr-pg-zone-body .ocr-image-wrapper{width:132px}.ocr-image-wrapper.ocr-dragging{opacity:.4;border-style:dashed;border-color:var(--primary-color, #4f46e5)}@media(max-width:700px){.ocr-pg-zones{grid-template-columns:1fr}}.ocr-img-index{position:absolute;top:6px;left:6px;min-width:22px;height:22px;padding:0 6px;background:#4f46e5d9;color:#fff;border-radius:11px;font-size:11px;font-weight:600;display:flex;align-items:center;justify-content:center;z-index:2;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.ocr-image-actions{position:absolute;top:6px;right:6px;display:flex;gap:4px;z-index:10}.ocr-img-action-btn{width:28px;height:28px;border-radius:8px;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:13px;transition:all .2s;background:#00000080;color:#fff;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.ocr-img-action-btn:hover{background:#000000b3;transform:scale(1.08)}.ocr-img-action-btn.delete-btn:hover{background:#ef4444cc}.ocr-img-action-btn.flip-btn{font-size:12px;font-weight:600}.ocr-image-wrapper.removing{opacity:0;transform:scale(.85);transition:all .25s ease-out}.ocr-enlarge-modal{position:fixed;inset:0;z-index:9999;background:#000000d9;display:flex;align-items:center;justify-content:center;cursor:pointer}.ocr-enlarge-modal img{max-width:95vw;max-height:90vh;-o-object-fit:contain;object-fit:contain;border-radius:8px;box-shadow:0 8px 32px #00000080}.ocr-image-wrapper.flipping img{transition:transform .3s ease}.ocr-preview-result{padding:10px 12px;max-height:9999px;opacity:1;overflow:visible;border-radius:0 0 12px 12px;background:#1e1b4b}.ocr-preview-result.ocr-result-hidden{max-height:0;opacity:0;padding:0 12px;pointer-events:none}.ocr-add-more-hidden{max-height:0;opacity:0;overflow:hidden;padding:0!important;margin:0!important;border:none!important;transition:max-height .2s ease,opacity .2s ease}.ocr-result-label{font-size:11px;color:var(--text-secondary, #818cf8);margin-bottom:6px}.ocr-result-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:8px;padding-bottom:4px;border-radius:0 0 12px 12px;background:var(--bg-secondary, #1e1b4b)}.ocr-result-btn{padding:6px 12px;border-radius:8px;border:none;font-size:12px;cursor:pointer;transition:all .2s}.ocr-result-cancel{background:#ffffff1a;color:#a5b4fc}.ocr-result-cancel:hover{background:#ffffff26}.ac-sel-row{display:flex;align-items:center;gap:10px;padding:6px 12px;border-bottom:1px solid rgba(255,255,255,.06)}.ac-sel-q{min-width:56px;font-size:13px;font-weight:500;color:var(--text-primary, #f0f0f0)}.ac-sel-opts{display:flex;gap:6px}.ac-sel-btn{width:36px;height:30px;border-radius:6px;border:1px solid rgba(255,255,255,.15);background:#ffffff0d;color:var(--text-secondary, #aaa);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s}.ac-sel-btn:hover{background:#ffffff1f}.ac-sel-btn.ac-sel-active{background:var(--accent-color, #6366f1);border-color:var(--accent-color, #6366f1);color:#fff}.grade-correction-row{display:flex;align-items:center;gap:6px;margin-top:4px;flex-wrap:wrap}.grade-correction-input{width:120px;padding:4px 8px;border-radius:6px;border:1px solid rgba(255,255,255,.2);background:#ffffff0f;color:var(--text-primary, #f0f0f0);font-size:13px;outline:none;transition:border-color .2s}.grade-correction-input:focus{border-color:var(--accent-color, #6366f1)}.grade-correction-apply{padding:3px 10px;border-radius:6px;border:none;background:var(--accent-color, #6366f1);color:#fff;font-size:12px;cursor:pointer;transition:opacity .2s}.grade-correction-apply:hover{opacity:.85}.ocr-result-send{background:linear-gradient(135deg,#fb7185,#e11d48);color:#fff;box-shadow:0 4px 12px #e11d4859}.ocr-result-send:hover{background:linear-gradient(135deg,#f43f5e,#be123c);box-shadow:0 6px 16px #e11d4873;transform:translateY(-1px)}.ocr-cards-container{max-height:200px;overflow-y:auto;display:flex;flex-direction:column;gap:8px;margin:8px 0}.ocr-card-item{display:flex;align-items:center;gap:8px;padding:6px 10px;background:#1e1b4b;border:1px solid rgba(99,102,241,.2);border-radius:8px;font-size:12px;color:#a5b4fc}.ocr-card-item img{width:40px;height:40px;-o-object-fit:cover;object-fit:cover;border-radius:4px;flex-shrink:0}.ocr-card-text{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ocr-card-status{flex-shrink:0}.ocr-card-remove{background:none;border:none;color:#6b7280;font-size:16px;cursor:pointer;padding:0 2px;line-height:1;flex-shrink:0}.ocr-card-remove:hover{color:#ef4444}.ocr-quota-overlay{position:fixed;inset:0;background:#0009;z-index:9999;display:flex;align-items:center;justify-content:center;animation:fadeIn .15s ease}.ocr-quota-dialog{background:#1e1b4b;border:1px solid rgba(99,102,241,.3);border-radius:16px;padding:24px;max-width:340px;width:90%;color:#e0e7ff}.ocr-quota-dialog h3{margin:0 0 16px;font-size:16px;text-align:center;color:#c7d2fe}.ocr-quota-info{background:#6366f11a;border-radius:10px;padding:14px;margin-bottom:16px;font-size:13px;line-height:2}.ocr-quota-info .quota-row{display:flex;justify-content:space-between;align-items:center}.ocr-quota-info .quota-label{color:#a5b4fc}.ocr-quota-info .quota-value{font-weight:600;color:#e0e7ff}.ocr-quota-info .quota-highlight{color:#f59e0b;font-weight:700;font-size:15px}.ocr-quota-info .quota-warning{color:#ef4444;font-weight:700;font-size:15px}.ocr-quota-btns{display:flex;gap:10px}.ocr-quota-btns button{flex:1;padding:10px 0;border-radius:10px;border:none;font-size:14px;cursor:pointer;transition:all .2s}.ocr-quota-cancel{background:#ffffff1a;color:#a5b4fc}.ocr-quota-cancel:hover{background:#ffffff26}.ocr-quota-confirm{background:linear-gradient(135deg,#6366f1,#4f46e5);color:#fff;font-weight:600}.ocr-quota-confirm:hover{background:linear-gradient(135deg,#818cf8,#6366f1)}.ocr-quota-confirm:disabled{opacity:.5;cursor:not-allowed}.grade-quota-confirm-overlay{position:fixed;inset:0;z-index:10000;display:flex;align-items:center;justify-content:center;background:#00000080;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}[data-theme=dark] .grade-quota-confirm-modal{background:var(--bg-secondary, #fff);border-radius:16px;padding:24px;max-width:340px;width:90%;box-shadow:0 8px 32px #0003;animation:scaleIn .2s ease}.grade-quota-confirm-title{font-size:17px;font-weight:700;text-align:center;margin-bottom:16px;color:var(--text-primary, #1f2937)}.grade-quota-confirm-row{display:flex;justify-content:space-between;align-items:center;padding:6px 0;font-size:14px;gap:12px}.grade-quota-confirm-label{color:var(--text-tertiary, #6b7280);white-space:nowrap}.grade-quota-confirm-value{color:var(--text-primary, #1f2937);text-align:right;font-weight:500}.grade-quota-insufficient .grade-quota-confirm-value{color:#ef4444;font-weight:700}.grade-quota-sufficient .grade-quota-confirm-value{color:#10b981;font-weight:700}.grade-quota-confirm-warn{background:#fef2f2;border:1px solid #fecaca;border-radius:8px;padding:10px 12px;margin-top:12px;font-size:13px;color:#dc2626;text-align:center;line-height:1.5}.grade-quota-confirm-actions{display:flex;gap:12px;margin-top:18px}.grade-quota-confirm-btn{flex:1;padding:10px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:all .15s}.grade-quota-confirm-cancel{background:var(--bg-hover, #f3f4f6);color:var(--text-secondary, #6b7280)}.grade-quota-confirm-ok{background:#10b981;color:#fff}.grade-quota-confirm-ok:hover{background:#059669}.grade-quota-confirm-overlay.cross-page-confirm-overlay{overflow-y:auto!important;align-items:flex-start!important;padding:40px 16px!important}.grade-quota-confirm-overlay:has(.cross-page-confirm-modal){overflow-y:auto;align-items:flex-start;padding:40px 16px}.cross-page-confirm-modal{max-height:none!important;width:92%!important;max-width:520px!important;padding:0!important;display:flex;flex-direction:column;position:relative;overflow:visible!important}.cross-page-confirm-modal .grade-quota-confirm-title{padding:18px 20px 12px;margin-bottom:0;border-bottom:1px solid var(--border-color, #e5e7eb);position:relative}.cross-page-close-btn{position:absolute;top:14px;right:14px;width:28px;height:28px;border:none;background:var(--bg-hover, #f3f4f6);border-radius:50%;cursor:pointer;font-size:16px;line-height:1;color:var(--text-secondary, 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strong{color:#94a3b8}.waiting-bar-progress-bar{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:600}.waiting-bar-progress-track{width:80px;height:6px;background:#ffffff40;border-radius:3px;overflow:hidden}.waiting-bar-progress-fill{height:100%;background:#fff;border-radius:3px;transition:width .4s ease}#waiting-progress-fill{position:relative;overflow:hidden}#waiting-progress-fill:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.45),transparent);transform:translate(-100%);animation:gradeWaitingFlow 1.6s linear infinite}@keyframes gradeWaitingFlow{to{transform:translate(100%)}}.grade-waiting-progress-stage{flex-shrink:0;transition:color .3s ease,background-color .3s ease}.grade-waiting-top-overlay .grade-waiting-tips{margin-top:10px;padding:0 16px 8px}.grade-waiting-top-overlay .grade-waiting-tip{font-size:13px;color:#11693a}.answer-card-confirm-modal{background:var(--bg-secondary, 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12px;border-radius:10px;font-size:13px;font-weight:500;cursor:pointer;border:1px solid var(--border-color, #d1d5db);transition:all .15s;background:transparent;color:var(--text-tertiary, #6b7280)}.answer-card-confirm-all-correct:hover{background:var(--bg-hover, #f3f4f6)}.answer-card-confirm-skip{padding:10px 12px;border-radius:10px;font-size:13px;font-weight:400;cursor:pointer;border:1px solid var(--border-color, #d1d5db);transition:all .15s;background:transparent;color:var(--text-tertiary, #9ca3af)}.answer-card-confirm-skip:hover{background:var(--bg-hover, #f3f4f6);color:var(--text-secondary, #6b7280)}.grouping-confirm-modal{background:var(--bg-primary, #fff);border-radius:16px;padding:20px;max-width:520px;width:92vw;max-height:85vh;overflow-y:auto;box-shadow:0 25px 50px -12px #00000040;position:relative}.grouping-confirm-body{display:flex;flex-direction:column;gap:10px;margin:12px 0 0;max-height:55vh;overflow-y:auto;padding-right:4px}.grouping-confirm-card{border:1px solid var(--border-color, #e5e7eb);border-radius:10px;padding:10px 12px;background:var(--bg-secondary, #f9fafb);transition:border-color .2s,box-shadow .2s}.grouping-confirm-card:hover{box-shadow:0 2px 8px #0000000f}.grouping-card-uncertain{border-color:#f97316;background:#fff7ed}.grouping-card-uncertain:hover{box-shadow:0 2px 8px #f9731626}.grouping-card-header{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.grouping-card-index{font-weight:700;font-size:13px;color:var(--text-primary, #111);min-width:32px}.grouping-card-type-select{padding:4px 8px;border-radius:6px;border-width:2px;border-style:solid;font-size:12px;font-weight:600;background:var(--bg-primary, #fff);cursor:pointer;outline:none;max-width:140px}.grouping-card-type-select:focus{box-shadow:0 0 0 2px #6366f14d}.grouping-card-subject{font-size:11px;font-weight:600;padding:2px 8px;border-radius:4px;background:#eff6ff;color:#1e40af}.grouping-card-details{display:flex;align-items:center;gap:6px;margin-top:6px;font-size:12px;color:var(--text-secondary, #6b7280)}.grouping-card-range{font-weight:600;color:var(--text-primary, #374151)}.grouping-card-count{margin-left:2px}.grouping-card-continuation-badge{font-size:10px;font-weight:600;padding:1px 6px;border-radius:3px;background:#fef3c7;color:#92400e}.grouping-card-continuation{display:flex;align-items:center;gap:6px;margin-top:6px}.grouping-continuation-label{font-size:12px;color:var(--text-secondary, #6b7280);white-space:nowrap}.grouping-continuation-select{flex:1;padding:4px 8px;border-radius:6px;border:1px solid var(--border-color, #d1d5db);font-size:12px;background:var(--bg-primary, #fff);color:var(--text-primary, #111);cursor:pointer;outline:none}.grouping-continuation-select:focus{border-color:#6366f1;box-shadow:0 0 0 2px #6366f133}.grouping-confirm-auto{padding:10px 14px;border-radius:10px;font-size:13px;font-weight:400;cursor:pointer;border:1px solid var(--border-color, #d1d5db);transition:all .15s;background:transparent;color:var(--text-tertiary, #6b7280)}.grouping-confirm-auto:hover{background:var(--bg-hover, #f3f4f6);color:var(--text-secondary, #374151)}.chat-voice-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;border:none;background:linear-gradient(135deg,#6366f1,#4f46e5);color:#fff;cursor:pointer;transition:all .2s;flex-shrink:0;box-shadow:0 1px 4px #4f46e540}.chat-voice-btn:hover{background:linear-gradient(135deg,#818cf8,#6366f1);transform:translateY(-1px)}.chat-formula-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;border:none;background:linear-gradient(135deg,#ec4899,#db2777);color:#fff;cursor:pointer;transition:all .2s;flex-shrink:0;box-shadow:0 1px 4px #db277740}.chat-formula-btn:hover{background:linear-gradient(135deg,#f472b6,#ec4899);transform:translateY(-1px)}.chat-formula-glyph{font-size:24px;font-weight:800;font-family:Segoe UI Symbol,Times New Roman,Georgia,serif;line-height:1;color:#fff;text-shadow:0 1px 2px rgba(120,20,70,.35)}.chat-tab-switcher{display:flex;align-items:center;background:var(--bg-tertiary);border-radius:8px;padding:2px;gap:2px}.chat-tab-btn{padding:4px 14px;border-radius:8px;border:none;background:transparent;color:var(--text-primary);font-size:12.5px;font-weight:700;cursor:pointer;transition:all .2s;white-space:nowrap;letter-spacing:.3px}.chat-tab-btn.active{color:#fff;box-shadow:0 1px 4px #0000001f}.chat-tab-btn[data-chat-tab=dialog].active{background:linear-gradient(135deg,#3b82f6,#2563eb)}.chat-tab-btn[data-chat-tab=history].active{background:linear-gradient(135deg,#8b5cf6,#7c3aed)}.chat-tab-btn[data-chat-tab=mistakes].active{background:linear-gradient(135deg,#22c55e,#16a34a)}.chat-tab-btn:hover:not(.active){background:#3b82f614;color:var(--text-primary)}.chat-tab-content{display:none!important}.chat-tab-content.active{display:flex!important}.chat-messages.chat-tab-content.active{display:block!important}.mistakes-panel{flex-direction:column;flex:1;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;min-height:0}.mistakes-header-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px 8px;flex-shrink:0}.mistakes-title{font-size:15px;font-weight:700;color:var(--accent)}.mistakes-clear-btn{padding:4px 10px;border-radius:6px;border:1px solid var(--border-color);background:transparent;color:var(--text-muted);font-size:11px;cursor:pointer;transition:all .2s}.mistakes-clear-btn:hover{border-color:#ef4444;color:#ef4444}.mistakes-list{display:flex;flex-direction:column;gap:14px;padding:8px 16px 16px;flex-shrink:0}.history-panel{flex-direction:column;flex:1;overflow:hidden}.history-header-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px 8px;flex-shrink:0}.history-title{font-size:15px;font-weight:700;color:#60a5fa}.history-list{display:flex;flex-direction:column;gap:10px;padding:8px 16px 16px;overflow-y:auto;flex:1}.history-item{background:var(--bg-tertiary);border-radius:10px;padding:12px 14px;cursor:pointer;transition:all .2s;border:1px solid transparent}.history-item:hover{border-color:#3b82f6;transform:translateY(-1px)}.history-item-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}.history-item-date{font-size:12px;color:var(--text-secondary);font-weight:500}.history-item-preview{font-size:13px;color:#cbd5e1;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.history-item-meta{font-size:11px;color:var(--text-muted);margin-top:4px}.history-detail-date{font-size:11px;color:var(--text-muted)}.history-msg-user{background:var(--chat-user-bg);border-radius:12px 12px 4px;padding:10px 14px;margin:8px 0 8px auto;max-width:85%;color:var(--text-primary);font-size:13px;line-height:1.6;width:-moz-fit-content;width:fit-content}.history-msg-assistant{background:var(--bg-tertiary);border-radius:12px 12px 12px 4px;padding:10px 14px;margin:8px 0;max-width:95%;color:#cbd5e1;font-size:13px;line-height:1.6}.grade-summary-card{background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:12px;padding:12px 16px;margin-bottom:12px}.mistakes-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;padding:40px 16px}.mistakes-empty-icon{font-size:48px;margin-bottom:12px}.mistakes-empty-text{font-size:15px;color:var(--text-muted);font-weight:600;margin-bottom:4px}.mistakes-empty-sub{font-size:12px;color:var(--text-muted)}.mistake-card{background:var(--mistake-card-bg, var(--bg-tertiary));border:2px solid color-mix(in srgb,#f59e0b 62%,var(--border-color));border-left:6px solid #f59e0b;border-radius:14px;padding:16px 18px;margin:22px 0 26px;position:relative;box-shadow:0 4px 14px #f59e0b2e,0 2px 5px #0000001f;transition:border-color .2s,box-shadow .2s,transform .15s}.mistake-card:before{content:"〰 ⸬ 〰";position:absolute;top:-28px;left:50%;transform:translate(-50%);font-size:13px;letter-spacing:9px;color:#505a6eb8;background:var(--bg-primary, #ffffff);padding:2px 12px;border-radius:20px;border:1px solid rgba(120,130,150,.28);box-shadow:0 1px 3px #0000000d;line-height:1;white-space:nowrap;z-index:1;pointer-events:none}.mistake-card:not(:first-child):after{content:"";position:absolute;top:-17px;left:12px;right:12px;height:3px;border-radius:3px;background:repeating-linear-gradient(to right,rgba(120,130,150,.4) 0,rgba(120,130,150,.4) 6px,transparent 6px,transparent 12px);z-index:0;pointer-events:none}#mistakes-list>.mistake-card:first-child:before,.mistake-chapter-group-header+.mistake-card:before{display:none}.mistake-card:hover{border-color:#f59e0b;border-left-color:#ea580c;box-shadow:0 6px 18px #f59e0b38,0 2px 6px #0000001f;transform:translateY(-1px)}.mistake-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}.mistake-card-date{font-size:12px;color:var(--text-secondary);font-weight:500;display:inline-block}.mistake-card-date-row{margin-top:2px;margin-bottom:4px}.mistake-status{font-size:11px;font-weight:600;padding:2px 8px;border-radius:10px;cursor:default;transition:all .2s}.mistake-status-unmastered{background:#ef444426;color:#f87171}.mistake-status-unmastered:hover{background:#ef444440}.mistake-status-mastered{background:#22c55e26;color:#4ade80}.mistake-status-mastered:hover{background:#22c55e40}.mistake-status-self{font-size:11px;font-weight:600;padding:2px 8px;border-radius:10px;cursor:pointer;transition:all .2s;display:inline-flex;align-items:center;gap:2px}.mistake-status-self.mistake-self-mastered{background:#22c55e2e;color:#16a34a;border:1px solid rgba(34,197,94,.4)}.mistake-status-self.mistake-self-mastered:hover{background:#22c55e47}.mistake-status-self.mistake-self-unmastered{background:#6b728024;color:#6b7280;border:1px solid rgba(107,114,128,.3)}.mistake-status-self.mistake-self-unmastered:hover{background:#6b72803d}.mistake-card-topic{font-size:14px;color:var(--text-primary);font-weight:400;line-height:1.5;margin-bottom:4px;white-space:pre-wrap;word-break:break-word}.mistake-passage{margin:6px 0 2px;border:1px solid var(--border-strong, #e5e7eb);border-left:3px solid #f59e0b;border-radius:8px;background:var(--bg-secondary, #fffdf6);overflow:hidden}.mistake-passage summary{cursor:pointer;font-size:12px;font-weight:600;color:#92400e;padding:6px 10px;-webkit-user-select:none;-moz-user-select:none;user-select:none;list-style:none}.mistake-passage summary:before{content:"▸ "}.mistake-passage[open] summary:before{content:"▾ "}.mistake-passage-body{padding:6px 10px 8px;font-size:13px;line-height:1.65;color:var(--text-primary, #1f2937);white-space:pre-wrap;word-break:break-word;border-top:1px dashed var(--border-strong, #e5e7eb)}[data-theme=dark] .mistake-passage{background:#2a2922;border-color:#3a382e;border-left-color:#f59e0b}[data-theme=dark] .mistake-passage summary{color:#fbbf24}[data-theme=dark] .mistake-passage-body{color:#e2e8f0}.mistake-ref-answer{margin-top:6px;font-size:13px;line-height:1.6;color:#8e8e93;padding:6px 8px;border-left:3px solid #d0d0d0;background:#7878780d;border-radius:0 6px 6px 0}.dark .mistake-ref-answer{color:#9a9aa5;border-left-color:#4a4a55;background:#ffffff08}.mistake-ref-sub-answers{display:flex;flex-direction:column;gap:2px;border-left-color:#10b981;background:#10b9810a}.mistake-ref-sub-answers .mistake-sub-item{margin-bottom:0;font-size:12.5px}.mistake-ref-sub-answers .mistake-sub-label{color:var(--text-primary, #0f172a);font-weight:600}.mistake-ref-sub-answers .mistake-sub-item.mistake-sub-ref{padding:2px 8px}.mistake-ref-label{font-weight:500;color:#6b6b73;margin-right:4px}.dark .mistake-ref-label{color:#a5a5b0}.mistake-sub-answers{margin-top:8px;padding:8px 10px;border:1px solid var(--border-strong, #e5e7eb);border-left:3px solid #e67e22;border-radius:8px;background:var(--bg-secondary, #fffdf6)}.mistake-sub-head{font-size:12px;font-weight:600;color:#b45309;margin-bottom:4px}.mistake-sub-question{font-size:12.5px;font-weight:500;color:#6b7280;line-height:1.5;margin-bottom:2px;padding-left:2px}.dark .mistake-sub-question{color:#9aa3af}.mistake-sub-answers .mistake-sub-item{display:block;padding:3px 8px 5px}.mistake-sub-answers .mistake-sub-answer-line{display:flex;align-items:baseline;gap:6px}.mistake-sub-item{display:flex;align-items:baseline;gap:6px;font-size:13px;line-height:1.5;margin-bottom:4px;padding:3px 8px;border-radius:6px;color:var(--text-primary, #1f2937)}.mistake-sub-unwell{background:#f59e0b14}.mistake-sub-icon{flex:0 0 auto;font-weight:700;width:16px;text-align:center}.mistake-sub-item .mistake-sub-icon{color:#dc2626}.mistake-sub-label{font-weight:600;color:var(--text-primary, #0f172a);white-space:nowrap}.mistake-sub-mark{font-weight:700;color:#dc2626}.mistake-sub-ans{flex:1;white-space:pre-wrap;word-break:break-word}.mistake-sub-empty{color:var(--text-secondary, #9ca3af);font-style:italic}.mistake-sub-answer{margin-top:6px;padding-top:6px;border-top:1px dashed var(--border-strong, #e5e7eb);font-size:13px;line-height:1.5;color:#16a34a;white-space:pre-wrap;word-break:break-word}.mistake-sub-answer-label{font-weight:600;color:#15803d}.mistake-sub-details{width:100%}.mistake-sub-summary{display:flex;align-items:baseline;gap:6px;cursor:pointer;list-style:none;font-size:13px;line-height:1.5;color:var(--text-primary, #1f2937)}.mistake-sub-summary::-webkit-details-marker{display:none}.mistake-sub-summary:hover{opacity:.85}.mistake-sub-body{margin-top:4px;padding:4px 6px 2px 10px;border-left:2px solid rgba(230,126,34,.35)}.mistake-sub-mark{font-weight:700;flex:0 0 auto}.mistake-sub-mark-sub-right{color:#059669}.mistake-sub-mark-sub-wrong{color:#dc2626}.mistake-sub-mark-sub-partial{color:#d97706}.mistake-sub-item-ok{background:#16a34a0d}.mistake-sub-fold-hint{font-size:11px;color:var(--text-secondary, #9ca3af);margin-left:auto;white-space:nowrap}.mistake-sub-item.mistake-sub-ref .mistake-sub-mark{font-size:12px}.mistake-ref-sub-answers .mistake-sub-body{border-left-color:#10b98166}[data-theme=dark] .mistake-sub-mark-sub-right{color:#34d399}[data-theme=dark] .mistake-sub-mark-sub-wrong{color:#f87171}[data-theme=dark] .mistake-sub-mark-sub-partial{color:#fbbf24}[data-theme=dark] .mistake-sub-item-ok{background:#4ade800f}[data-theme=dark] .mistake-sub-fold-hint{color:#8a8f9a}[data-theme=dark] .mistake-sub-answers .mistake-sub-answer-line{color:#fde68a}[data-theme=dark] .mistake-sub-answers{background:#26221a;border-color:#3a382e;border-left-color:#f59e0b}[data-theme=dark] .mistake-sub-head{color:#fbbf24}[data-theme=dark] .mistake-sub-mark:not(.mistake-sub-mark-sub-right):not(.mistake-sub-mark-sub-wrong):not(.mistake-sub-mark-sub-partial){color:#f87171}[data-theme=dark] .mistake-sub-answer{color:#4ade80;border-color:#3a382e}[data-theme=dark] .mistake-sub-answer-label{color:#86efac}.mistake-card-diagnosis{font-size:12px;color:var(--text-muted);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.mistake-charts{margin-top:8px}.mistake-charts-label{font-size:12px;color:var(--text-muted);margin-bottom:6px}.mistake-charts-thumbs{display:flex;flex-wrap:wrap;gap:8px}.mistake-chart-thumb{width:88px;height:116px;-o-object-fit:cover;object-fit:cover;border-radius:8px;border:1px solid rgba(0,0,0,.08);cursor:zoom-in;background:#f8fafc;transition:transform .15s ease,box-shadow .15s ease}.mistake-chart-thumb:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001f}.history-msg-images{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.history-msg-thumb{width:88px;height:116px;-o-object-fit:cover;object-fit:cover;border-radius:8px;border:1px solid rgba(0,0,0,.08);cursor:zoom-in;background:#f8fafc;transition:transform .15s ease,box-shadow .15s ease}.history-msg-thumb:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001f}.mistake-note{margin-top:10px;padding:8px 10px;background:#fbbf2414;border:1px solid rgba(251,191,36,.25);border-radius:8px}.mistake-note-label{font-size:12px;font-weight:600;color:#b45309;margin-bottom:6px}.mistake-note-input{width:100%;resize:vertical;font-family:inherit;font-size:13px;line-height:1.6;color:#1e293b;background:#fff;border:1px solid rgba(180,83,9,.2);border-radius:6px;padding:8px 10px;outline:none;transition:border-color .15s ease,box-shadow .15s ease}.mistake-note-input::-moz-placeholder{color:#94a3b8}.mistake-note-input::placeholder{color:#94a3b8}.mistake-note-input:focus{border-color:#f59e0b;box-shadow:0 0 0 3px #f59e0b26}.mistake-note-hit{background:#fff3bf;border-color:#ffe374;box-shadow:0 0 0 2px #ffe37480}.mistake-note-hit .mistake-note-input{background:#fffdf2;border-color:#f5c518}.mistake-note-hit-flag{margin-left:6px;padding:1px 6px;font-size:11px;font-weight:700;color:#7a4a00;background:#ffe374;border-radius:8px}[data-theme=dark] .mistake-note-hit{background:#8a6d1a47;border-color:#8a6d1a;box-shadow:0 0 0 2px #8a6d1a73}[data-theme=dark] .mistake-note-hit .mistake-note-input{background:#2a2410;border-color:#8a6d1a}[data-theme=dark] .mistake-note-hit-flag{color:#ffe9a8;background:#8a6d1a}.mistake-card-actions{display:flex;gap:8px;margin-top:8px}.variant-tier-progress{margin-top:10px;padding:10px 12px;border-radius:10px;background:var(--bg-tertiary, #f6f8fb);border:1px solid var(--border-color, 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10px;color:var(--text-primary);font-size:12px;outline:none;box-sizing:border-box;resize:vertical;min-height:48px;margin-top:4px}.diag-feedback-detail:focus{border-color:#f59e0b}.diag-feedback-tag-actions{display:flex;gap:8px;margin-top:4px}.diag-feedback-tag-submit{background:linear-gradient(135deg,#f59e0b,#d97706);color:var(--bg-primary);border:none;border-radius:8px;padding:5px 14px;font-size:12px;font-weight:600;cursor:pointer}.diag-feedback-tag-cancel{background:var(--bg-tertiary);color:var(--text-muted);border:1px solid var(--border-color);border-radius:8px;padding:5px 14px;font-size:12px;cursor:pointer}.feedback-other-input{margin-top:4px}.feedback-other-text{width:100%;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;padding:6px 10px;color:var(--text-primary);font-size:12px;outline:none;box-sizing:border-box}.feedback-other-text:focus{border-color:#f59e0b}.feedback-reason-actions{display:flex;gap:8px;margin-top:4px}.feedback-reason-submit{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border:none;border-radius:10px;padding:8px 20px;font-size:14px;font-weight:600;cursor:pointer;box-shadow:0 2px 8px #3b82f640;transition:all .2s}.feedback-reason-submit:hover{box-shadow:0 4px 16px #3b82f659;transform:translateY(-1px)}.feedback-reason-submit:active{transform:translateY(0)}.feedback-reason-cancel{background:var(--bg-tertiary);color:var(--text-muted);border:1px solid var(--border-color);border-radius:8px;padding:5px 14px;font-size:12px;cursor:pointer}.diag-card{margin:10px 0;border-radius:10px;overflow:hidden;border:1px solid rgba(255,255,255,.08)}.diag-card-conclusion{border-color:#f59e0b4d;background:#f59e0b0d}.diag-card-variant{border-color:#3b82f64d;background:#3b82f60d}.diag-card-answer{border-color:#22c55e4d;background:#22c55e0d}.diag-card-header{display:flex;align-items:center;gap:6px;padding:8px 12px;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;transition:background .15s}.diag-card-header:hover{background:#ffffff08}.diag-card-icon{font-size:14px}.diag-card-title{font-size:13px;font-weight:700;color:var(--text-primary);flex:1}.diag-card-toggle{font-size:10px;color:var(--text-muted);padding:2px 8px;background:var(--bg-tertiary);border-radius:10px}.diag-card-body{padding:8px 12px 12px;font-size:13px;line-height:1.7;color:#cbd5e1}.diag-card-collapsed 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li{margin-bottom:2px}.privacy-actions{margin-top:20px;text-align:center;display:flex;gap:12px;justify-content:center}.privacy-reject-btn{background:transparent;color:#9ca3af;border:1px solid #374151;border-radius:12px;padding:10px 24px;font-size:14px;font-weight:500;cursor:pointer;transition:all .15s}.privacy-reject-btn:hover{border-color:#6b7280;color:#d1d5db}.privacy-accept-btn{background:linear-gradient(135deg,#f59e0b,#d97706);color:var(--bg-primary);border:none;border-radius:12px;padding:10px 32px;font-size:14px;font-weight:700;cursor:pointer;transition:all .15s}.privacy-accept-btn:hover{filter:brightness(1.1);transform:scale(1.02)}.announcement-bar{position:fixed;top:0;left:0;right:0;z-index:60;background:linear-gradient(90deg,#1e3a5f,#1e40af);color:#fff;font-size:13px;padding:0;height:36px;display:flex;align-items:center;overflow:hidden}.announcement-inner{max-width:80rem;margin:0 auto;width:100%;display:flex;align-items:center;padding:0 40px 0 16px;position:relative;height:100%}.announcement-content{flex:1;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:opacity .3s}.announcement-content.announcement-fade{opacity:0}.announcement-link{color:#93c5fd;text-decoration:underline;text-underline-offset:2px}.announcement-link:hover{color:#bfdbfe}.announcement-close{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:#fffc;font-size:16px;font-weight:700;cursor:pointer;padding:2px 8px;border-radius:8px;line-height:1;transition:all .2s}.announcement-close:hover{background:#fff3;color:#fff;transform:translateY(-50%) scale(1.1)}.navbar{top:36px;transition:top .3s}#user-profile-modal button[id$=-btn],#user-profile-modal button[id$=-btn]:hover{transition:all .2s}#user-profile-modal button[id=open-faq-btn],#user-profile-modal button[id=my-details-btn],#user-profile-modal button[id=my-feedback-btn]{box-shadow:0 2px 8px #3b82f61a;transform:translateY(0)}#user-profile-modal button[id=open-faq-btn]:hover,#user-profile-modal button[id=my-details-btn]:hover,#user-profile-modal button[id=my-feedback-btn]:hover{box-shadow:0 4px 16px #3b82f633;transform:translateY(-1px)}#user-profile-modal button[id=open-faq-btn]:active,#user-profile-modal button[id=my-details-btn]:active,#user-profile-modal button[id=my-feedback-btn]:active{transform:translateY(0);box-shadow:0 1px 4px #3b82f61a}#details-content.details-deep>div,#details-content.details-deep .detail-section{background:#0f172a8c!important;border-color:#3b82f624!important;color:#e2e8f0!important}#details-content.details-deep div[style*="color:#6b7280"],#details-content.details-deep div[style*="color:#9ca3af"]{color:#94a3b8!important}#details-content.details-deep div[style*="color:#374151"],#details-content.details-deep div[style*="color:#1f2937"]{color:#e2e8f0!important}#details-content.details-deep div[style*="color:#4a90d9"]{color:#60a5fa!important}#details-content.details-deep [style*="background:#e5e7eb"]{background:#3b82f62e!important}#details-content.details-deep [style*="border:1px solid #e5e7eb"],#details-content.details-deep [style*="border:1px solid #f1f5f9"]{border-color:#3b82f624!important}#details-content.details-deep .detail-tab{color:#94a3b8!important}.chat-service-btn{background:linear-gradient(135deg,#facc15,#eab308);border:none;color:#1e2d4a;cursor:pointer;padding:4px;border-radius:8px;transition:all .2s;display:flex;align-items:center;justify-content:center;font-size:16px;width:34px;height:34px;box-shadow:0 2px 8px #eab30866}.chat-service-btn:hover{color:#1e2d4a;background:linear-gradient(135deg,#fde047,#facc15);transform:scale(1.08);box-shadow:0 4px 12px #eab30880}.service-panel{display:none;flex-direction:column;flex:1;overflow:hidden}.service-panel.active{display:flex}.service-panel-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border-color)}.service-messages{flex:1;overflow-y:auto;padding:16px}.service-welcome{text-align:center;padding:24px 16px}.service-welcome-icon{font-size:32px;margin-bottom:8px}.service-welcome-text{color:#eab308;font-weight:800;font-size:15px;margin-bottom:4px}.service-welcome-sub{color:var(--text-muted);font-size:13px}.service-faq{margin-top:16px}.service-faq-title{color:var(--text-muted);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px;padding:0 4px}.service-faq-item{display:block;width:100%;text-align:left;background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-primary);padding:10px 14px;border-radius:10px;font-size:13px;cursor:pointer;margin-bottom:8px;transition:all .15s}.service-faq-item:hover{background:var(--border-color);border-color:var(--border-color)}.service-msg{max-width:85%;padding:10px 14px;border-radius:14px;font-size:13px;line-height:1.6;margin-bottom:10px;word-break:break-word}.service-msg-user{background:#3b82f6;color:#fff;margin-left:auto;border-bottom-right-radius:4px}.service-msg-service{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color);margin-right:auto;border-bottom-left-radius:4px;white-space:pre-wrap;word-break:break-word;line-height:1.6}.service-faq-item-wrap{margin-bottom:4px}.service-faq-answer{display:none;margin-top:4px;padding:10px 12px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:8px;color:var(--text-primary);line-height:1.6;white-space:pre-wrap;word-break:break-word;font-size:13px}.service-faq-content{margin-bottom:8px}.service-faq-actions{display:flex;align-items:center;gap:12px;margin-top:8px;padding-top:8px;border-top:1px solid var(--border-color)}.service-faq-collapse{background:none;border:1px solid var(--border-color);color:var(--text-muted);padding:2px 10px;border-radius:4px;font-size:12px;cursor:pointer}.service-faq-collapse:hover{color:var(--text-primary);border-color:var(--primary-light)}.service-faq-unresolved{font-size:12px;color:var(--text-muted);margin-left:auto}.service-faq-unresolved a{color:#60a5fa;text-decoration:underline;cursor:pointer}.service-faq-loading{color:var(--text-muted)}.service-faq-error{color:#f87171}.service-faq-item.faq-expanded{background:var(--accent-light)!important;border-color:var(--accent)!important}.service-chat-area{display:none;border-top:1px solid var(--border-color);margin-top:8px;padding-top:8px}.service-chat-title{font-size:13px;color:var(--text-muted, #64748b);margin-bottom:8px;padding:0 4px}#service-chat-messages{padding:4px 0}.service-msg-unresolved{margin-top:6px;padding-top:6px;border-top:1px dashed var(--border-color);font-size:12px;color:var(--text-muted)}.service-msg-unresolved a{color:#60a5fa;text-decoration:underline;cursor:pointer}.service-bottom-bar{flex-shrink:0;border-top:1px solid rgba(255,255,255,.08);background:var(--bg-secondary)}.service-input-area{padding:8px 16px}#service-contact-wechat-btn{flex-shrink:0;padding:0 10px;height:38px;border-radius:8px;background:linear-gradient(135deg,#3b82f6,#6366f1);color:#fff;font-size:16px;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px #3b82f64d;transition:all .2s}#service-contact-wechat-btn:hover{transform:scale(1.05);box-shadow:0 4px 12px #3b82f673}#service-contact-wechat-btn:active{transform:scale(.98);box-shadow:0 1px 4px #3b82f640}.service-msg-streaming:after{content:"▌";animation:support-blink .8s infinite;color:#60a5fa}@keyframes support-blink{0%,to{opacity:1}50%{opacity:0}}[data-theme=dark] body{background:var(--bg-primary);color:var(--text-primary)}[data-theme=dark] ::-webkit-scrollbar-thumb{background:var(--border-color)}[data-theme=dark] nav{background:#0f172af2;border-color:var(--border-color)}[data-theme=dark] footer{background:#020617;border-color:var(--border-color)}[data-theme=dark] .chat-panel,[data-theme=dark] .chat-header{background:var(--bg-secondary);border-color:var(--border-color)}[data-theme=dark] .chat-messages-area{background:var(--bg-primary)}[data-theme=dark] .chat-input-area{background:var(--bg-secondary);border-color:var(--border-color)}[data-theme=dark] .chat-input{background:var(--bg-input);color:var(--text-primary);border-color:var(--border-color)}[data-theme=dark] .chat-input::-moz-placeholder{color:var(--text-muted)}[data-theme=dark] .chat-input::placeholder{color:var(--text-muted)}[data-theme=dark] .chat-send-btn{background:linear-gradient(135deg,#3b82f6,#1d4ed8)}[data-theme=dark] .chat-send-btn:hover{background:linear-gradient(135deg,#60a5fa,#2563eb)}[data-theme=dark] .message-user{background:var(--chat-user-bg);border-color:var(--chat-bubble-user-border)}[data-theme=dark] .message-ai{background:var(--chat-ai-bg);border-color:var(--chat-bubble-ai-border)}[data-theme=dark] .message-ai .ai-content{color:var(--text-primary)}[data-theme=dark] .chat-tab-btn{color:var(--text-secondary);border-color:transparent}[data-theme=dark] .chat-tab-btn.active{color:#fff;border-color:transparent}[data-theme=dark] .chat-tab-btn:hover{color:var(--text-primary)}[data-theme=dark] .daily-quota-bar{background:#3b82f614;border-color:#3b82f61f}[data-theme=dark] .daily-quota-bar.quota-low{background:#fbbf2414}[data-theme=dark] .daily-quota-bar.quota-exhausted{background:#ef444414}[data-theme=dark] .wechat-login-header-btn{background:#07c1601a;border-color:#07c16040}[data-theme=dark] .buy-package-header-btn{background:linear-gradient(135deg,#4f46e5,#7c3aed)!important}[data-theme=dark] .subject-select-btn{background:var(--bg-tertiary);color:var(--text-secondary);border-color:var(--border-color)}[data-theme=dark] .subject-select-btn.active{background:#2563eb;color:#fff;border-color:#2563eb}[data-theme=dark] .grade-select-btn{background:var(--bg-tertiary);color:var(--text-secondary);border-color:var(--border-color)}[data-theme=dark] .grade-select-btn.active{background:#7c3aed;color:#fff;border-color:#7c3aed}[data-theme=dark] .mistake-card{background:var(--mistake-card-bg);border-color:var(--border-color);border-left-color:#f59e0b}[data-theme=dark] .mistake-card h4{color:var(--text-primary)}[data-theme=dark] .mistake-detail{background:var(--bg-tertiary)}[data-theme=dark] .mistake-note{background:#fbbf241f;border-color:#fbbf244d}[data-theme=dark] .mistake-note-label{color:#fbbf24}[data-theme=dark] .mistake-note-input{background:#1e293b;color:#e2e8f0;border-color:#fbbf2440}[data-theme=dark] .mistake-note-input::-moz-placeholder{color:#64748b}[data-theme=dark] .mistake-note-input::placeholder{color:#64748b}[data-theme=dark] .history-card{background:var(--history-card-bg);border-color:var(--border-color)}[data-theme=dark] .history-detail{background:var(--bg-primary)}[data-theme=dark] .search-input{background:var(--search-bg);color:var(--text-primary);border-color:var(--border-color)}[data-theme=dark] .search-input::-moz-placeholder{color:var(--text-muted)}[data-theme=dark] .search-input::placeholder{color:var(--text-muted)}[data-theme=dark] .dashboard-stats{border-color:var(--border-color)}[data-theme=dark] .stat-value{color:var(--text-primary)}[data-theme=dark] .chat-welcome{background:var(--bg-primary)}[data-theme=dark] .quick-start-item{background:var(--bg-secondary);border-color:var(--border-color)}[data-theme=dark] .quick-start-item span{color:var(--text-secondary)}[data-theme=dark] .image-preview-overlay{background:#000000e6}[data-theme=dark] .ocr-preview-card,[data-theme=dark] .new-chat-confirm{background:var(--bg-secondary);border-color:var(--border-color)}[data-theme=dark] .new-chat-confirm p{color:var(--text-secondary)}[data-theme=dark] .new-chat-confirm-btn.cancel{background:var(--bg-tertiary);color:var(--text-secondary);border-color:var(--border-color)}[data-theme=dark] .announcement-bar{background:#1e1b4b;border-color:#312e81}[data-theme=dark] .review-reminder{background:linear-gradient(135deg,#422006,#451a03);border-color:#92400e;color:var(--accent)}[data-theme=dark] .review-reminder-count{color:#f87171}[data-theme=dark] .review-reminder-action{color:var(--accent)}[data-theme=dark] .kp-tag{background:#1e3a5f;color:#93c5fd;border-color:#2563eb}.theme-toggle{background:none;border:1px solid var(--border-color);border-radius:8px;padding:4px 8px;cursor:pointer;font-size:14px;color:var(--text-secondary);transition:all .2s;display:flex;align-items:center;gap:4px}.theme-toggle:hover{background:var(--bg-tertiary);color:var(--text-primary)}.variant-selftest{margin-top:4px;padding-top:4px;border-top:1px dashed var(--border-color, #e5e7eb)}.diag-card-variant{padding:4px 10px 4px 14px;margin:2px 0}.diag-card-variant .diag-result-title{margin-bottom:2px;line-height:1.3}.diag-card-variant .diag-result-content{line-height:1.32;margin:1px 0}.diag-card-variant .diag-result-content p{margin:1px 0}.diag-card-variant .diag-result-content p:last-child{margin-bottom:0}.diag-card-variant .diag-result-content .katex-display{margin:.15em 0!important}.diag-card-variant .variant-content{line-height:1.32;margin:1px 0}.diag-card-variant .variant-selftest{margin-top:2px;padding-top:2px}.diag-card-variant .diag-feedback-widget{margin:2px 0 1px;padding:3px 8px}.diag-card-variant .variant-practice-btn{margin-top:2px}.variant-practice-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;border:none;border-radius:8px;font-size:14px;cursor:pointer;transition:all .2s}.variant-practice-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #6366f14d}.variant-answer-input{width:100%;padding:6px 10px;border:1px solid var(--border-color, #e5e7eb);border-radius:8px;font-size:14px;line-height:1.5;resize:vertical;background:var(--bg-primary, #fff);color:var(--text-primary, #111827);transition:border-color .2s;box-sizing:border-box}.variant-answer-input:focus{outline:none;border-color:#6366f1}.variant-input-error{border-color:#ef4444!important;animation:shake .4s ease}@keyframes shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-4px)}40%,80%{transform:translate(4px)}}.variant-practice-actions{display:flex;gap:8px;margin-top:2px}.variant-submit-btn{padding:4px 16px;background:#6366f1;color:#fff;border:none;border-radius:8px;font-size:14px;cursor:pointer;transition:background .2s}.variant-submit-btn:hover{background:#4f46e5}.variant-submit-btn:disabled{background:#9ca3af;cursor:not-allowed}.variant-channels{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 4px}.variant-ch{display:inline-flex;align-items:center;gap:6px;min-height:40px;padding:6px 12px;background:var(--bg-card, #fff);color:var(--text-primary, #0f172a);border:1px solid var(--border-color, #e5e7eb);border-radius:10px;font-size:13px;line-height:1;cursor:pointer;transition:border-color .15s ease,background .15s ease,transform .08s ease}.variant-ch svg{flex:none}.variant-ch span{line-height:1.2}.variant-ch:hover{border-color:#6366f1;background:#eef2ff}.variant-ch:active{transform:scale(.98)}.variant-ch:focus-visible{outline:2px solid rgba(59,130,246,.65);outline-offset:2px}@media(prefers-reduced-motion:reduce){.variant-ch{transition:none}}.variant-cancel-btn{padding:8px 20px;background:var(--bg-tertiary, #f3f4f6);color:var(--text-secondary, #6b7280);border:none;border-radius:8px;font-size:14px;cursor:pointer}.variant-cancel-btn:hover{background:var(--border-color, #e5e7eb)}.variant-feedback{margin-top:6px;padding:6px 10px;border-radius:8px;font-size:13px;line-height:1.35}.variant-feedback-success{background:#f0fdf4;border-left:4px solid #22c55e;color:#166534}.variant-feedback-error{background:#fef2f2;border-left:4px solid #ef4444;color:#991b1b}.variant-feedback-partial,.variant-feedback-warning{background:#fffbeb;border-left:4px solid #f59e0b;color:#92400e}.variant-retry-btn{margin-top:8px;padding:6px 14px;background:var(--bg-tertiary, #f3f4f6);color:var(--text-secondary, #6b7280);border:1px solid var(--border-color, #e5e7eb);border-radius:6px;font-size:13px;cursor:pointer;transition:all .2s}.variant-retry-btn:hover{background:var(--border-color, #e5e7eb);color:var(--text-primary, #111827)}[data-theme=dark] .variant-answer-input{background:var(--bg-tertiary);border-color:var(--border-color);color:var(--text-primary)}[data-theme=dark] .variant-answer-input:focus{border-color:#818cf8}[data-theme=dark] .variant-cancel-btn,[data-theme=dark] .variant-retry-btn{background:var(--border-color);color:var(--text-muted)}[data-theme=dark] .variant-feedback-success{background:#052e16;border-left-color:#22c55e;color:#86efac}[data-theme=dark] .variant-feedback-error{background:#450a0a;border-left-color:#ef4444;color:#fca5a5}[data-theme=dark] .variant-feedback-partial,[data-theme=dark] .variant-feedback-warning{background:#451a03;border-left-color:#f59e0b;color:#fcd34d}.backup-modal{position:fixed;inset:0;background:#00000080;display:none;align-items:center;justify-content:center;z-index:10000}.backup-modal-content{background:var(--bg-primary, #fff);border-radius:16px;padding:24px;width:90%;max-width:420px;max-height:85vh;overflow-y:auto;box-shadow:0 20px 60px 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.btn-label{display:none!important}.msg-bubble{max-width:90%!important;font-size:14px!important}.msg-bubble img{max-width:100%!important}.modal-content{margin:8px!important;max-width:calc(100% - 16px)!important;border-radius:12px!important}.modal-header h2{font-size:1.1rem!important}.share-reward-modal .poster-canvas{width:280px!important;height:448px!important}.payment-qr{width:160px!important;height:160px!important}.share-fab{width:44px!important;height:44px!important;font-size:18px!important}.share-fab-label{display:none!important}}@media(max-width:374px){.chat-panel .toolbar-btn{padding:2px 4px!important;font-size:9px!important}.chat-input-area textarea{font-size:13px!important}.modal-content{padding:12px!important}}.diag-feedback-widget{margin:1px 0 0;padding:2px 6px;background:var(--bg-secondary, #f9fafb);border-radius:8px;border:1px solid var(--border-color, #e5e7eb);text-align:center}.diag-feedback-question{font-size:12px;line-height:1.15;color:var(--text-secondary, #6b7280);margin-bottom:1px}.diag-feedback-buttons{display:flex;gap:5px;justify-content:center}.diag-feedback-btn{padding:1px 11px;border:1px solid var(--border-color, #e5e7eb);border-radius:14px;background:var(--bg-primary, #fff);color:var(--text-primary, #1f2937);font-size:12px;line-height:1.25;cursor:pointer;transition:all .15s ease}.diag-feedback-btn:hover{background:var(--bg-tertiary, #f3f4f6);border-color:var(--brand-blue, #4a90d9)}.diag-feedback-btn:disabled{opacity:.5;cursor:default}.diag-feedback-selected-helpful{background:#f0fdf4!important;border-color:#22c55e!important;color:#166534!important}.diag-feedback-selected-unhelpful{background:#fef2f2!important;border-color:#ef4444!important;color:#991b1b!important}.diag-feedback-thanks{font-size:13px;color:var(--brand-blue, #4a90d9)}[data-theme=dark] .diag-feedback-widget{background:#ffffff0d;border-color:#ffffff1a}[data-theme=dark] .diag-feedback-selected-helpful{background:#22c55e26!important}[data-theme=dark] .diag-feedback-selected-unhelpful{background:#ef444426!important}.diag-disclaimer{margin-top:1px;padding:1px 6px;font-size:10px;color:#888;text-align:center;line-height:1.2}[data-theme=dark] .diag-disclaimer{color:#666}.self-harm-bypass-btn{display:block;margin-top:12px;padding:8px 16px;background:var(--brand-blue, #4a90d9);color:#fff;border:none;border-radius:6px;font-size:14px;cursor:pointer;transition:opacity .15s}.self-harm-bypass-btn:hover{opacity:.85}[data-theme=dark] .self-harm-bypass-btn{background:#7cb3f0;color:#1a1a2e}.onboarding-quick-buttons{margin:8px 0 12px;padding:12px;background:var(--card-bg, #f8fafc);border-radius:10px;border:1px solid var(--border-color, #e2e8f0)}.onboarding-quick-label{font-size:12px;color:var(--text-muted, #94a3b8);margin-bottom:8px}.onboarding-quick-list{display:flex;flex-direction:column;gap:6px}.onboarding-quick-btn{display:block;width:100%;padding:10px 12px;border-radius:8px;border:1px solid var(--border-color, #e2e8f0);background:var(--bg-primary, #fff);color:var(--text-primary, #1e293b);font-size:13px;text-align:left;cursor:pointer;transition:all .15s ease;line-height:1.4}.onboarding-quick-btn:hover{border-color:#4a90d9;background:#dbe9fb;color:#123a66;font-weight:600}[data-theme=dark] .onboarding-quick-btn:hover{background:#1e3a5f;border-color:#5a7ba8;color:#e8f1fc}.onboarding-completion-card{margin:8px 0 12px;padding:16px;background:var(--card-bg, #f8fafc);border-radius:10px;border:1px solid var(--border-color, #e2e8f0);text-align:center}.onboarding-completion-icon{font-size:28px;margin-bottom:6px}.onboarding-completion-title{font-size:15px;font-weight:600;color:var(--text-primary, #1e293b);margin-bottom:4px}.onboarding-completion-desc{font-size:13px;color:var(--text-secondary, #64748b);margin-bottom:12px}.onboarding-completion-btn{display:inline-block;padding:8px 20px;border-radius:8px;border:none;background:linear-gradient(135deg,#4a90d9,#1a1a2e);color:#fff;font-size:14px;font-weight:500;cursor:pointer;transition:transform .12s ease}.onboarding-completion-btn:active{transform:scale(.96)}.stream-interrupted-hint{display:flex;align-items:center;gap:8px;padding:8px 12px;margin:4px 0;background:var(--bg-secondary, #fef3c7);border-radius:8px;font-size:13px;color:var(--text-secondary, #92400e)}.stream-interrupted-hint button{padding:4px 12px;background:var(--accent, #f0a030);color:#fff;border:none;border-radius:4px;font-size:12px;cursor:pointer}.stream-interrupted-hint button:hover{opacity:.9}.llm-refused-notice{display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px 20px;margin:8px 0;background:var(--bg-secondary, #fef3c7);border:1px solid var(--border-color, #fcd34d);border-radius:12px;text-align:center}.llm-refused-notice .refused-icon{font-size:24px}.llm-refused-notice .refused-text{font-size:14px;color:var(--text-secondary, #92400e);line-height:1.6}.llm-refused-notice .retry-refused-btn{margin-top:4px;padding:8px 20px;background:var(--accent, #f0a030);color:#fff;border:none;border-radius:8px;font-size:14px;cursor:pointer;transition:opacity .2s}.llm-refused-notice .retry-refused-btn:hover{opacity:.9}.thinking-indicator{display:flex;align-items:center;gap:6px;padding:8px 12px;font-size:13px;color:var(--text-secondary, #6b7280)}.thinking-indicator:before{content:"";width:16px;height:16px;border:2px solid var(--border, #d1d5db);border-top-color:var(--accent, #4a90d9);border-radius:50%;animation:thinking-spin .8s linear infinite}@keyframes thinking-spin{to{transform:rotate(360deg)}}.feedback-checkbox-item{display:flex;align-items:center;gap:6px;padding:6px 0;font-size:14px;color:var(--text-primary, #1f2937);cursor:pointer}.feedback-checkbox-item input[type=checkbox]{width:16px;height:16px;accent-color:#4a90d9;cursor:pointer}#deep-feedback-modal .wechat-modal-body{padding:16px}#deep-feedback-modal .feedback-checkbox-item{color:#e2e8f0}#deep-feedback-modal .feedback-checkbox-item input[type=checkbox]{accent-color:#3b82f6}#deep-feedback-modal textarea::-moz-placeholder{color:#7c8aa0}#deep-feedback-modal textarea::placeholder{color:#7c8aa0}.feedback-status-badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:11px;font-weight:500;line-height:1.4}.feedback-status-pending{background:#fef3c7;color:#92400e}.feedback-status-processing{background:#dbeafe;color:#1e40af}.feedback-status-resolved{background:#d1fae5;color:#065f46}.feedback-status-rejected{background:#fee2e2;color:#991b1b}.feedback-status-closed{background:#f3f4f6;color:#6b7280}.my-feedback-item{padding:8px 0;border-bottom:1px solid var(--border-color, #e5e7eb);font-size:13px}.my-feedback-item:last-child{border-bottom:none}.my-feedback-types{color:var(--text-primary, #1f2937);font-weight:500}.my-feedback-time{font-size:11px;color:var(--text-muted, #9ca3af);margin-top:2px}.my-feedback-note{margin-top:4px;padding:4px 8px;background:var(--card-bg, #f0f9ff);border-radius:4px;font-size:12px;color:var(--text-secondary, #6b7280)}[data-theme=dark] .feedback-status-pending{background:#78350f;color:#fde68a}[data-theme=dark] .feedback-status-processing{background:#1e3a5f;color:#93c5fd}[data-theme=dark] .feedback-status-resolved{background:#064e3b;color:#6ee7b7}[data-theme=dark] .feedback-status-rejected{background:#7f1d1d;color:#fca5a5}[data-theme=dark] .my-feedback-note{background:var(--bg-tertiary);color:var(--text-muted)}.faq-item{margin-bottom:12px;border:1px solid #e5e7eb;border-radius:8px;overflow:hidden}.faq-question{padding:12px 16px;font-size:14px;font-weight:600;color:#1a1a2e;cursor:pointer;display:flex;align-items:center;gap:8px;background:#f9fafb;transition:background .15s}.faq-question:hover{background:#f3f4f6}.faq-question:before{content:"▸";font-size:12px;transition:transform .2s}.faq-question.open:before{transform:rotate(90deg)}.faq-answer{padding:0 16px;max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease;font-size:13px;color:#4b5563;line-height:1.6}.faq-answer.open{max-height:200px;padding:12px 16px}[data-theme=dark] .faq-item{border-color:#374151}[data-theme=dark] .faq-question{background:var(--bg-tertiary);color:#e5e7eb}[data-theme=dark] .faq-question:hover{background:#263244}[data-theme=dark] .faq-answer{color:#9ca3af}body.has-announcement{padding-top:50px}#hero{padding-top:6rem}body.has-announcement #hero{padding-top:3.5rem}[data-theme=dark] #version-announcement-banner{background:linear-gradient(135deg,#1e293b,#6b8dd6)}.my-details-content{background:#fff;border-radius:12px;width:90%;max-width:420px;max-height:80vh;display:flex;flex-direction:column;overflow:hidden}.my-details-header{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid #e5e7eb}.my-details-header h3{font-size:16px;font-weight:600;color:#1f2937;margin:0}.my-details-tabs{display:flex;border-bottom:1px solid #e5e7eb;padding:0 8px}.detail-tab{padding:10px 12px;font-size:13px;color:#9ca3af;cursor:pointer;border-bottom:2px solid transparent;background:none;border-top:none;border-left:none;border-right:none;transition:all .2s;white-space:nowrap}.detail-tab:hover{color:#4a90d9}#details-content{padding:12px 16px;overflow-y:auto;flex:1}[data-theme=dark] .my-details-content{background:#1f2937}[data-theme=dark] .my-details-header h3{color:#e5e7eb}[data-theme=dark] .my-details-header,[data-theme=dark] .my-details-tabs{border-bottom-color:#374151}[data-theme=dark] #details-content div[style*="border:1px solid #e5e7eb"]{border-color:#374151!important}#my-tickets-modal .modal-box,#create-ticket-modal .modal-box{background:#fff;border-radius:12px;width:90%;max-width:440px;max-height:80vh;overflow-y:auto;padding:20px;box-shadow:0 8px 32px #00000026}[data-theme=dark] #my-tickets-modal .modal-box,[data-theme=dark] #create-ticket-modal .modal-box{background:#1f2937}.graduation-card{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:10000;padding:16px}.graduation-card-inner{background:var(--bg-primary, #fff);border-radius:12px;padding:24px;max-width:380px;width:100%;box-shadow:0 8px 32px #00000026;text-align:center}.graduation-card-inner h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--text-primary, #1a1a2e)}.graduation-card-inner p{font-size:14px;color:var(--text-secondary, #555);line-height:1.6}.graduation-card-actions{margin-top:16px;display:flex;flex-direction:column;gap:8px}.graduation-btn-primary{background:#4a90d9;color:#fff;border:none;border-radius:8px;padding:10px 16px;font-size:14px;cursor:pointer;font-weight:600}.graduation-btn-primary:hover{background:#3a7bc8}.graduation-btn-secondary{background:transparent;color:#4a90d9;border:1px solid #4a90d9;border-radius:8px;padding:10px 16px;font-size:14px;cursor:pointer}.graduation-btn-secondary:hover{background:#4a90d914}.graduation-btn-close{background:none;border:none;color:var(--text-tertiary, #999);font-size:13px;cursor:pointer;padding:6px}.graduation-btn-close:hover{color:var(--text-secondary, #666)}[data-theme=dark] .graduation-card-inner{background:var(--bg-tertiary)}[data-theme=dark] .graduation-card-inner h3{color:#e5e7eb}[data-theme=dark] .graduation-card-inner p{color:#9ca3af}.subject-radar-wrap{width:100%;max-width:280px;margin:0 auto;padding:8px 0}.subject-radar-wrap canvas{width:100%!important;height:auto!important}.learning-dashboard-modal{position:fixed;inset:0;z-index:10001;display:none;align-items:center;justify-content:center;background:#00000073}.learning-dashboard-content{background:var(--card-bg, #fff);border-radius:12px;width:94%;max-width:500px;max-height:85vh;overflow-y:auto;padding:20px;position:relative}.learning-dashboard-content h3{font-size:17px;font-weight:600;margin-bottom:16px;color:var(--text-primary, #1a1a2e)}.dashboard-close{position:absolute;top:12px;right:14px;background:none;border:none;font-size:20px;color:var(--text-secondary, #666);cursor:pointer}.dashboard-chart-section{margin-bottom:20px}.dashboard-chart-section h4{font-size:14px;font-weight:600;margin-bottom:8px;color:var(--text-primary, #1a1a2e)}.dashboard-chart-wrap{width:100%;max-height:200px;position:relative}.dashboard-chart-wrap canvas{width:100%!important;height:180px!important}.dashboard-empty{text-align:center;color:var(--text-secondary, #999);font-size:13px;padding:24px 0}[data-theme=dark] .learning-dashboard-content{background:var(--bg-tertiary)}[data-theme=dark] .learning-dashboard-content h3,[data-theme=dark] .dashboard-chart-section h4{color:#e5e7eb}.parent-encourage-card{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--card, #fff);border-radius:16px;padding:24px;box-shadow:0 8px 32px #00000026;z-index:10001;max-width:320px;width:90%;text-align:center;animation:cardPopIn .3s ease-out}.parent-encourage-icon{font-size:40px;margin-bottom:12px}.parent-encourage-label{font-size:12px;color:var(--text-secondary, #999);margin-bottom:8px}.parent-encourage-text{font-size:16px;font-weight:600;color:var(--text, #333);line-height:1.5;margin-bottom:16px}.parent-encourage-close{background:var(--accent, #4a90d9);color:#fff;border:none;border-radius:8px;padding:8px 24px;font-size:14px;cursor:pointer}.parent-encourage-close:active{transform:scale(.96)}.encourage-item{display:flex;align-items:center;gap:8px;padding:10px 12px;border:1px solid var(--border, #e5e7eb);border-radius:8px;cursor:pointer;margin-bottom:8px;transition:background .15s}.encourage-item:hover{background:var(--bg-secondary, #f5f5f5)}.encourage-item:active{transform:scale(.98)}.encourage-emoji{font-size:20px}.encourage-text{font-size:14px;color:var(--text, #333)}.encourage-sent-item{padding:10px 0;border-bottom:1px solid var(--border, #e5e7eb)}.encourage-sent-item:last-child{border-bottom:none}.encourage-sent-text{font-size:14px;color:var(--text, #333);margin-bottom:4px}.encourage-sent-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--text-secondary, #999)}.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.security-grid .card{padding:16px}.sensitive-word-list{max-height:300px;overflow-y:auto}.sensitive-word-item{display:flex;justify-content:space-between;align-items:center;padding:6px 0;border-bottom:1px solid #e5e7eb}.sensitive-word-item:last-child{border-bottom:none}.sensitive-word-tag{font-size:11px;padding:2px 6px;border-radius:4px;background:#fee2e2;color:#991b1b}.security-event-item{padding:8px 0;border-bottom:1px solid #e5e7eb;font-size:13px}.security-event-item:last-child{border-bottom:none}.theme-section{margin-top:10px;padding-top:10px;border-top:1px solid var(--border-color)}.theme-section-label{font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:8px}.theme-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.theme-card{display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 4px;border-radius:10px;border:2px solid var(--border-color);background:var(--bg-secondary);cursor:pointer;transition:all .2s;position:relative}.theme-card:hover{border-color:var(--text-muted);transform:translateY(-1px)}.theme-card.active{border-color:var(--accent, #4a90d9);box-shadow:0 0 0 1px var(--accent, #4a90d9)}.theme-card .theme-preview{width:36px;height:36px;border-radius:50%;border:2px solid rgba(0,0,0,.08);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}.theme-card .theme-name{font-size:11px;color:var(--text-secondary);white-space:nowrap}.theme-card.active .theme-name{color:var(--text-primary);font-weight:600}.theme-card .theme-check{position:absolute;top:2px;right:4px;font-size:10px;color:var(--accent, #4a90d9);display:none}.theme-card.active .theme-check{display:block}.theme-preview-classic{background:linear-gradient(135deg,#f5f0e8 50%,#5b7a9d 50%)}.theme-preview-sakura{background:linear-gradient(135deg,#fdf2f4 50%,#d4607a 50%)}.theme-preview-ocean{background:linear-gradient(135deg,#eaf4fa 50%,#2580b0 50%)}.theme-preview-forest{background:linear-gradient(135deg,#eef3e8 50%,#3a7828 50%)}.theme-preview-minimal{background:linear-gradient(135deg,#f0f0f0 50%,#404040 50%)}@media(max-width:640px){.theme-grid{grid-template-columns:repeat(3,1fr);gap:6px}.theme-card{padding:6px 2px}.theme-card .theme-preview{width:30px;height:30px}.theme-card .theme-name{font-size:10px}}@media(max-width:374px){.theme-grid{grid-template-columns:repeat(2,1fr)}}.image-crop-modal{position:fixed;inset:0;z-index:10000;display:flex;align-items:center;justify-content:center;background:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.image-crop-modal-content{position:relative;max-width:90vw;max-height:80vh;border-radius:12px;overflow:hidden;box-shadow:0 20px 60px #0006}.image-crop-modal-content img{display:block;max-width:90vw;max-height:80vh;-o-object-fit:contain;object-fit:contain}.image-crop-close{position:absolute;top:8px;right:8px;width:32px;height:32px;border-radius:50%;background:#0009;color:#fff;border:none;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:1}.image-crop-close:hover{background:#000c}.image-crop-hint{position:absolute;bottom:0;left:0;right:0;padding:8px 12px;background:#0009;color:#e0e0e0;font-size:12px;text-align:center}.v2-correction-modal{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:10000}.v2-correction-card{background:var(--bg-primary, #fff);border-radius:16px;padding:24px;max-width:520px;width:90vw;max-height:80vh;overflow-y:auto;box-shadow:0 8px 32px #0000004d}.v2-correction-card h3{margin:0 0 16px;font-size:18px;font-weight:600}.v2-correction-section{margin-bottom:16px}.v2-correction-section .label{font-size:12px;font-weight:600;color:var(--text-secondary, #666);margin-bottom:4px;text-transform:uppercase;letter-spacing:.5px}.v2-correction-section .value{font-size:15px;padding:8px 12px;border-radius:8px;background:var(--bg-secondary, #f5f5f5);line-height:1.5}.v2-correction-section .value.standard{border-left:3px solid #22c55e}.v2-correction-section .value.solution{border-left:3px solid #3b82f6;white-space:pre-wrap;font-size:14px}.v2-correction-input{width:100%;padding:10px 14px;border:2px solid var(--border, #ddd);border-radius:8px;font-size:15px;outline:none;transition:border-color .2s}.v2-correction-input:focus{border-color:var(--accent, #4f46e5)}.v2-correction-actions{display:flex;gap:12px;margin-top:20px}.v2-correction-actions button{flex:1;padding:10px 16px;border-radius:8px;font-size:15px;font-weight:500;cursor:pointer;border:none;transition:opacity .2s}.v2-correction-actions button:hover{opacity:.9}.v2-correction-actions .btn-primary{background:var(--accent, #4f46e5);color:#fff}.v2-correction-actions .btn-secondary{background:var(--bg-secondary, #f0f0f0);color:var(--text-primary, #333)}.v2-auto-feedback-note{margin-top:12px;padding:8px 12px;border-radius:8px;background:#fef3c7;color:#92400e;font-size:13px;line-height:1.4}.view-original-crop-btn,.view-crop-btn{display:inline-flex;align-items:center;gap:2px;font-size:11px;padding:1px 6px;border-radius:4px;background:#3b82f61a;color:#3b82f6;border:none;cursor:pointer;margin-left:4px;vertical-align:middle}.view-crop-btn:hover{background:#3b82f633}.dark .view-crop-btn{background:#60a5fa26;color:#60a5fa}.view-crop-btn svg{width:12px;height:12px;flex-shrink:0}.mistake-chapter-tag{display:inline-flex;align-items:center;gap:4px;font-size:11px;line-height:1;padding:3px 8px;border-radius:999px;background:var(--accent-light, rgba(91,122,157,.12));color:var(--accent, #5b7a9d);border:1px dashed var(--accent, #5b7a9d);cursor:pointer;transition:all .18s ease}.mistake-chapter-tag:hover{background:var(--accent, #5b7a9d);color:#fff}.mistake-chapter-tag .tag-pending{font-size:9px;padding:1px 4px;border-radius:999px;background:#f97316;color:#fff}.mistake-chapter-tag 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ease-in-out infinite}.mkt-wn-orb span{font-size:34px;color:#fde68a;text-shadow:0 0 14px rgba(253,230,138,.9),0 0 30px rgba(245,158,11,.7);animation:mktWnPulse 2.4s ease-in-out infinite}.mkt-wn-orb:after{content:"";position:absolute;inset:-10px;border-radius:50%;border:1px dashed rgba(147,197,253,.45);animation:mktWnSpin 14s linear infinite}@keyframes mktWnFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@keyframes mktWnPulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.12);opacity:.85}}@keyframes mktWnSpin{to{transform:rotate(360deg)}}.mkt-wn-wish{margin:0 0 14px;font-size:13px;line-height:1.6;color:#fbbf24}.mkt-wn-tagline{font-size:15.5px;line-height:1.9;color:#dbe6f7;margin-bottom:26px}.mkt-wn-tagline b{display:inline-block;margin-top:6px;font-size:19px;letter-spacing:2px;background:linear-gradient(135deg,#fde68a,#f59e0b 60%,#fbbf24);-webkit-background-clip:text;background-clip:text;color:transparent}.mkt-welcome-new .mkt-welcome-cta{max-width:300px;background:linear-gradient(135deg,#2563eb,#4f46e5 55%,#7c3aed);font-size:17px;padding:15px 22px;animation:mktWnCtaGlow 2.6s ease-in-out infinite}@keyframes mktWnCtaGlow{0%,to{box-shadow:0 10px 28px #4f46e559}50%{box-shadow:0 12px 36px #60a5fa99}}@media(prefers-reduced-motion:reduce){.mkt-wn-orb,.mkt-wn-orb span,.mkt-wn-orb:after,.mkt-welcome-new .mkt-welcome-cta{animation:none}}.hover\:-translate-y-0\.5:hover{--tw-translate-y: -.125rem;transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skew(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.hover\:bg-slate-50:hover{--tw-bg-opacity: 1;background-color:rgb(248 250 252 / var(--tw-bg-opacity, 1))}.hover\:text-blue-300:hover{--tw-text-opacity: 1;color:rgb(147 197 253 / var(--tw-text-opacity, 1))}.hover\:text-white:hover{--tw-text-opacity: 1;color:rgb(255 255 255 / var(--tw-text-opacity, 1))}.hover\:shadow-lg:hover{--tw-shadow: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--tw-shadow-colored: 0 10px 15px -3px var(--tw-shadow-color), 0 4px 6px -4px var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow, 0 0 #0000),var(--tw-ring-shadow, 0 0 #0000),var(--tw-shadow)}@media(min-width:640px){.sm\:mb-12{margin-bottom:3rem}.sm\:mb-6{margin-bottom:1.5rem}.sm\:mt-5{margin-top:1.25rem}.sm\:mt-8{margin-top:2rem}.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.sm\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.sm\:flex-row{flex-direction:row}.sm\:p-6{padding:1.5rem}.sm\:p-7{padding:1.75rem}.sm\:px-4{padding-left:1rem;padding-right:1rem}.sm\:px-6{padding-left:1.5rem;padding-right:1.5rem}.sm\:py-16{padding-top:4rem;padding-bottom:4rem}.sm\:py-2{padding-top:.5rem;padding-bottom:.5rem}.sm\:py-24{padding-top:6rem;padding-bottom:6rem}.sm\:text-3xl{font-size:1.875rem;line-height:2.25rem}.sm\:text-lg{font-size:1.125rem;line-height:1.75rem}.sm\:text-sm{font-size:.875rem;line-height:1.25rem}}@media(min-width:768px){.md\:flex{display:flex}.md\:hidden{display:none}.md\:max-w-none{max-width:none}.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.md\:flex-row{flex-direction:row}.md\:gap-5{gap:1.25rem}.md\:gap-6{gap:1.5rem}.md\:gap-8{gap:2rem}.md\:whitespace-nowrap{white-space:nowrap}.md\:p-8{padding:2rem}.md\:py-20{padding-top:5rem;padding-bottom:5rem}.md\:py-24{padding-top:6rem;padding-bottom:6rem}.md\:text-4xl{font-size:2.25rem;line-height:2.5rem}.md\:text-5xl{font-size:3rem;line-height:1}}@media(min-width:1024px){.lg\:mx-0{margin-left:0;margin-right:0}.lg\:block{display:block}.lg\:max-w-xl{max-width:36rem}.lg\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.lg\:grid-cols-7{grid-template-columns:repeat(7,minmax(0,1fr))}.lg\:flex-row{flex-direction:row}.lg\:gap-16{gap:4rem}.lg\:py-32{padding-top:8rem;padding-bottom:8rem}.lg\:pt-40{padding-top:10rem}.lg\:text-left{text-align:left}}