.my-sticky-column-table thead tr:last-child th:last-child{background-color:#fff}.my-sticky-column-table td:last-child{background-color:#f1f5f9;opacity:.85}.my-sticky-column-table td:last-child:hover{opacity:1}.my-sticky-column-table th:last-child,.my-sticky-column-table td:last-child{position:sticky;right:0;z-index:1}.dropzone[data-v-06aa8cf2]{display:flex;flex-direction:column;align-items:center;gap:2px;padding:14px;border:2px dashed #b0bec5;border-radius:8px;cursor:pointer;transition:background .15s,border-color .15s;text-align:center}.dropzone[data-v-06aa8cf2]:hover,.dropzone--active[data-v-06aa8cf2]{background:#e3f2fd;border-color:#1976d2}.dropzone--disabled[data-v-06aa8cf2]{opacity:.5;cursor:default}.course-header[data-v-9e40dff2]{background:linear-gradient(135deg,#1565c0,#42a5f5);color:#fff;border-radius:8px}.section-title[data-v-9e40dff2]{background:#f5f7fa;font-weight:600}.student-text[data-v-9e40dff2]{white-space:pre-wrap}.quiz-card[data-v-9e40dff2]{display:flex;align-items:center;padding:10px 12px;border:1px solid #e0e0e0;border-radius:6px}[data-v-9e40dff2] .video-frame{width:100%;aspect-ratio:16 / 9;border:0;border-radius:6px}[data-v-9e40dff2] .video-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;aspect-ratio:16 / 9;background:#263238;color:#cfd8dc;border-radius:6px;text-align:center;padding:12px}.preview-text[data-v-a50b0c4f]{white-space:pre-wrap}.gift-example[data-v-19ce9c25]{white-space:pre-wrap;font-size:12px;background:#f5f5f5;padding:10px;border-radius:4px;max-height:420px;overflow:auto}.stages[data-v-caf5d8ac]{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.stage[data-v-caf5d8ac]{display:flex;align-items:center;gap:6px;color:#78909c}.stage.current[data-v-caf5d8ac]{color:#263238;font-weight:600}.stage.done[data-v-caf5d8ac]{color:#2e7d32}.dot[data-v-caf5d8ac]{width:22px;height:22px;border-radius:50%;background:#cfd8dc;color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center}.stage.done .dot[data-v-caf5d8ac]{background:#2e7d32}.line[data-v-caf5d8ac]{flex:1;min-width:16px;height:2px;background:#cfd8dc}.line.done[data-v-caf5d8ac]{background:#2e7d32}.label[data-v-caf5d8ac]{font-size:13px}.hint[data-v-caf5d8ac]{margin-top:8px;padding:6px 10px;border-left:4px solid #1976d2;background:#f5f7fa;font-size:13px}.sidebar[data-v-28d30f5b]{width:260px;min-width:260px;border-right:1px solid #e0e0e0;background:#fafafa;overflow-y:auto}.step-active[data-v-28d30f5b]{background:#e3f2fd;font-weight:600}.step-body[data-v-28d30f5b]{display:flex;flex-direction:column;gap:12px}.apexcharts-legend-text{max-width:100px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.rankings{display:flex;justify-content:space-around;align-items:center;margin-top:20px;width:100%}.ranking-card{border:1px solid #ddd;border-radius:4px;padding:20px;background-color:#f9f9f9;text-align:center;flex:1;margin:0 10px}.ranking-title{font-size:18px;font-weight:700}.ranking-value{font-size:36px;color:#008ffb}.chart-container{width:100%;margin-top:20px;display:flex;justify-content:center}#chart{width:100%}