.playvideo-container[data-v-ed1752b0]{min-height:100vh;background-color:#f5f5f5;padding:20px}.content-wrapper[data-v-ed1752b0]{display:flex;max-width:1200px;margin:0 auto;gap:20px}.left-panel[data-v-ed1752b0]{width:300px;background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.1);overflow:hidden}.course-info[data-v-ed1752b0]{padding:20px;border-bottom:1px solid #eee}.course-title[data-v-ed1752b0]{margin:0 0 10px 0;font-size:18px;color:#333}.course-meta[data-v-ed1752b0]{display:flex;flex-direction:column;gap:5px;font-size:14px;color:#666}.section-list[data-v-ed1752b0]{max-height:600px;overflow-y:auto}.section-item[data-v-ed1752b0]{padding:15px 20px;border-bottom:1px solid #f0f0f0;cursor:pointer;transition:background-color .3s}.section-item[data-v-ed1752b0]:hover{background-color:#f8f9fa}.section-item.active[data-v-ed1752b0]{background-color:#e6f7ff;border-left:3px solid #1890ff}.section-number[data-v-ed1752b0]{font-weight:700;color:#1890ff;margin-bottom:5px}.section-title[data-v-ed1752b0]{font-size:14px;color:#333;margin-bottom:5px;line-height:1.4}.section-status[data-v-ed1752b0]{font-size:12px;color:#999}.section-status.completed[data-v-ed1752b0]{color:#52c41a}.right-panel[data-v-ed1752b0]{flex:1;display:flex;flex-direction:column;gap:20px}.video-player[data-v-ed1752b0]{background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.1);overflow:hidden}.player-wrapper[data-v-ed1752b0]{position:relative;background:#000;min-height:400px;display:flex;align-items:center;justify-content:center}.video-element[data-v-ed1752b0]{width:100%;height:100%;max-height:600px}.no-video[data-v-ed1752b0]{color:#fff;text-align:center}.no-video i[data-v-ed1752b0]{font-size:48px;margin-bottom:10px}.video-info[data-v-ed1752b0]{padding:20px}.video-title[data-v-ed1752b0]{margin:0 0 15px 0;font-size:20px;color:#333}.teacher-info[data-v-ed1752b0]{display:flex;align-items:center;margin-bottom:10px}.teacher-avatar[data-v-ed1752b0]{width:32px;height:32px;border-radius:50%;margin-right:10px}.teacher-name[data-v-ed1752b0]{color:#666}.video-meta[data-v-ed1752b0]{color:#999;font-size:14px}.course-detail[data-v-ed1752b0]{background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.1);padding:20px}.course-detail h3[data-v-ed1752b0]{margin:0 0 15px 0;font-size:16px;color:#333;border-bottom:1px solid #eee;padding-bottom:10px}.detail-content[data-v-ed1752b0]{display:flex;flex-direction:column;gap:12px}.detail-item[data-v-ed1752b0]{display:flex}.detail-item label[data-v-ed1752b0]{width:80px;color:#666;font-weight:700}.detail-item span[data-v-ed1752b0]{flex:1;color:#333}@media (max-width:768px){.content-wrapper[data-v-ed1752b0]{flex-direction:column}.left-panel[data-v-ed1752b0]{width:100%}.player-wrapper[data-v-ed1752b0]{min-height:300px}}