*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{width:100vw;height:100vh;overflow:hidden}.sidebar[data-v-54b6cd2d]{width:280px;height:100vh;background:linear-gradient(180deg,#fff,#f8f9fa);border-right:1px solid #e8e8e8;display:flex;flex-direction:column;box-shadow:2px 0 8px #00000008}.sidebar-header[data-v-54b6cd2d]{padding:32px 20px 24px;background:linear-gradient(135deg,#000,#2478ff);border-radius:0 0 20px;box-shadow:0 4px 12px #667eea26;margin-bottom:16px}.sidebar-header h2[data-v-54b6cd2d]{margin:0;color:#fff;font-size:24px;font-weight:700;letter-spacing:.5px;text-shadow:0 2px 4px rgba(0,0,0,.1)}[data-v-54b6cd2d] .n-menu{background:transparent;color:#333;padding:8px 12px}[data-v-54b6cd2d] .n-menu-item{color:#555;border-radius:12px;margin-bottom:4px;font-weight:500;transition:all .3s cubic-bezier(.4,0,.2,1)}[data-v-54b6cd2d] .n-menu-item:hover{color:#667eea;background:linear-gradient(90deg,#667eea14,#764ba214);transform:translate(4px)}[data-v-54b6cd2d] .n-menu-item.n-menu-item--selected{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-weight:600;box-shadow:0 4px 12px #667eea40}[data-v-54b6cd2d] .n-menu-item-content__icon{font-size:18px}.topbar[data-v-63905144]{height:72px;background:#fff;border-bottom:1px solid #e8e8e8;padding:0 32px;display:flex;align-items:center;justify-content:space-between;box-shadow:0 1px 4px #0000000a}.topbar-left h3[data-v-63905144]{margin:0;font-size:20px;font-weight:600;color:#333}.topbar-right[data-v-63905144]{display:flex;align-items:center;gap:16px}[data-v-63905144] .n-button{font-weight:500;color:#555;transition:all .3s ease}[data-v-63905144] .n-button:hover{color:#667eea}.admin-layout[data-v-c101356f]{display:flex;width:100vw;height:100vh;overflow:hidden}.main-content[data-v-c101356f]{flex:1;display:flex;flex-direction:column;overflow:hidden}.content-area[data-v-c101356f]{flex:1;overflow-y:auto;background:#fafbfc;padding:32px}.login-page[data-v-f76cb313]{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#fff,#62dfea)}.login-card[data-v-f76cb313]{width:100%;max-width:400px;padding:40px;background:#fff;border-radius:8px;box-shadow:0 10px 40px #0000001a}.login-header[data-v-f76cb313]{text-align:center;margin-bottom:32px}.login-header h1[data-v-f76cb313]{margin:0 0 8px;font-size:28px;color:#333}.login-header p[data-v-f76cb313]{margin:0;color:#666;font-size:14px}.google-signin-btn[data-v-f76cb313]{width:100%;display:flex;align-items:center;justify-content:center;gap:12px;padding:14px 24px;font-size:16px;font-weight:500;color:#333;background:#fff;border:2px solid #ddd;border-radius:8px;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 4px #0000001a}.google-signin-btn[data-v-f76cb313]:hover:not(:disabled){background:#f8f9fa;border-color:#667eea;box-shadow:0 4px 12px #667eea26;transform:translateY(-1px)}.google-signin-btn[data-v-f76cb313]:active:not(:disabled){transform:translateY(0);box-shadow:0 2px 4px #0000001a}.google-signin-btn[data-v-f76cb313]:disabled{opacity:.6;cursor:not-allowed}.google-signin-btn svg[data-v-f76cb313]{flex-shrink:0}.dashboard[data-v-0db5c349]{max-width:1400px}.dashboard-header[data-v-0db5c349]{margin-bottom:32px}.dashboard-header h1[data-v-0db5c349]{margin:0 0 8px;font-size:32px;font-weight:700;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.dashboard-header p[data-v-0db5c349]{margin:0;font-size:16px;color:#666}.stat-card[data-v-0db5c349]{border-radius:16px;border:none;box-shadow:0 4px 12px #0000000d;transition:all .3s cubic-bezier(.4,0,.2,1);overflow:hidden}.stat-card[data-v-0db5c349]:hover{transform:translateY(-4px);box-shadow:0 8px 24px #0000001a}.stat-content[data-v-0db5c349]{display:flex;align-items:center;gap:20px}.stat-icon[data-v-0db5c349]{width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;flex-shrink:0}.stat-card-purple .stat-icon[data-v-0db5c349]{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.stat-card-blue .stat-icon[data-v-0db5c349]{background:linear-gradient(135deg,#4facfe,#00f2fe);color:#fff}.stat-card-green .stat-icon[data-v-0db5c349]{background:linear-gradient(135deg,#43e97b,#38f9d7);color:#fff}.stat-card-orange .stat-icon[data-v-0db5c349]{background:linear-gradient(135deg,#fa709a,#fee140);color:#fff}.stat-info[data-v-0db5c349]{flex:1}.stat-value[data-v-0db5c349]{font-size:32px;font-weight:700;color:#333;line-height:1.2;margin-bottom:4px}.stat-label[data-v-0db5c349]{font-size:14px;color:#666;font-weight:500}.action-card[data-v-0db5c349],.activity-card[data-v-0db5c349]{border-radius:16px;border:none;box-shadow:0 4px 12px #0000000d}[data-v-0db5c349] .action-card .n-card-header,[data-v-0db5c349] .activity-card .n-card-header{font-weight:600;font-size:18px;color:#333}.action-btn[data-v-0db5c349]{background:linear-gradient(135deg,#667eea,#764ba2);border:none;font-weight:600;transition:all .3s ease}.action-btn[data-v-0db5c349]:hover{transform:translateY(-2px);box-shadow:0 6px 20px #667eea4d}.action-btn-secondary[data-v-0db5c349]{border:2px solid #e8e8e8;background:#fff;font-weight:600;transition:all .3s ease}.action-btn-secondary[data-v-0db5c349]:hover{border-color:#667eea;color:#667eea;transform:translateY(-2px)}.activity-item[data-v-0db5c349]{width:100%}.activity-content[data-v-0db5c349]{display:flex;flex-direction:column;gap:4px}.activity-message[data-v-0db5c349]{font-size:14px;color:#333;font-weight:500}.activity-meta[data-v-0db5c349]{display:flex;align-items:center;gap:8px;font-size:12px;color:#999}.activity-user[data-v-0db5c349]{color:#667eea;font-weight:500}.activity-dot[data-v-0db5c349]{color:#ddd}.activity-time[data-v-0db5c349]{color:#999}.media-url-input[data-v-60891ee2]{width:100%}.preview-container[data-v-60891ee2]{margin-top:12px;border-radius:8px;overflow:hidden;background:#f5f5f5}.image-preview img[data-v-60891ee2]{width:100%;max-height:200px;object-fit:contain;display:block}.video-preview video[data-v-60891ee2]{width:100%;max-height:300px;display:block}.lesson-editor[data-v-7c0b0fcc]{max-width:900px}.step-card[data-v-7c0b0fcc]{margin-bottom:24px}.word-char[data-v-7c0b0fcc]{font-size:48px;font-weight:700;line-height:1;margin-right:16px}.search-results[data-v-7c0b0fcc]{margin-top:16px}.selected-word[data-v-7c0b0fcc]{background-color:#f0f9ff;border-left:4px solid #1890ff}[data-v-e2a983c5] .n-drawer-body-content-wrapper{padding:0}.lesson-list[data-v-e2a983c5]{display:flex;flex-direction:column;gap:8px}.lesson-item[data-v-e2a983c5]{display:flex;align-items:center;gap:12px;padding:12px;background:#fff;border-radius:8px;border:2px solid #e0e0e0;transition:all .2s;cursor:pointer}.lesson-item[data-v-e2a983c5]:hover{background:#fafafa;box-shadow:0 2px 8px #0000001a;border-color:#1890ff}.lesson-item:hover .drag-handle[data-v-e2a983c5]{color:#1890ff}.drag-handle[data-v-e2a983c5]{cursor:grab;color:#bbb;font-size:20px;transition:color .2s}.drag-handle[data-v-e2a983c5]:active{cursor:grabbing;color:#1890ff}.lesson-number[data-v-e2a983c5]{width:32px;height:32px;background:#1890ff;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px}.lesson-char[data-v-e2a983c5]{font-size:32px;font-weight:700;color:#333;font-family:KaiTi,楷体,serif}.lesson-info[data-v-e2a983c5]{flex:1;min-width:0}.lesson-meta[data-v-e2a983c5]{display:flex;align-items:center;gap:8px}.lesson-english[data-v-e2a983c5]{color:#666;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.preview-header[data-v-e2a983c5]{padding:24px;border-radius:12px;display:flex;align-items:center;gap:16px;color:#fff}.preview-icon[data-v-e2a983c5]{font-size:48px}.preview-info h2[data-v-e2a983c5]{margin:0;font-size:24px}.preview-info p[data-v-e2a983c5]{margin:4px 0 0;opacity:.9}.lesson-preview-grid[data-v-e2a983c5]{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:12px;margin-top:16px}.lesson-preview-card[data-v-e2a983c5]{background:#f5f5f5;border-radius:8px;padding:12px;text-align:center}.preview-num[data-v-e2a983c5]{font-size:10px;color:#999;margin-bottom:4px}.preview-char[data-v-e2a983c5]{font-size:28px;font-weight:700;font-family:KaiTi,楷体,serif}.preview-pinyin[data-v-e2a983c5]{font-size:11px;color:#666;margin-top:4px}.lesson-preview-more[data-v-e2a983c5]{background:#e0e0e0;border-radius:8px;padding:12px;display:flex;align-items:center;justify-content:center;color:#666;font-weight:600}@media (max-width: 768px){.lesson-preview-grid[data-v-e2a983c5]{grid-template-columns:repeat(auto-fill,minmax(60px,1fr));gap:8px}.lesson-char[data-v-e2a983c5]{font-size:24px}}.levels-view[data-v-013c46b2]{max-width:1400px}.level-list[data-v-83b43401]{display:flex;flex-direction:column;gap:8px}.level-item[data-v-83b43401]{display:flex;align-items:center;gap:12px;padding:12px;background:#f5f5f5;border-radius:8px;border:1px solid #e0e0e0}.drag-handle[data-v-83b43401]{cursor:grab;color:#999;font-size:18px}.drag-handle[data-v-83b43401]:active{cursor:grabbing}.level-icon[data-v-83b43401]{font-size:24px}.level-info[data-v-83b43401]{flex:1;min-width:0}.level-name[data-v-83b43401]{font-weight:600;margin-bottom:4px}.series-preview[data-v-83b43401]{padding:32px;border-radius:12px;display:flex;align-items:center;gap:16px;color:#fff;min-height:150px}.preview-icon[data-v-83b43401]{font-size:64px}.preview-info h2[data-v-83b43401]{margin:0;font-size:28px;text-shadow:0 2px 4px rgba(0,0,0,.2)}.preview-info p[data-v-83b43401]{margin:8px 0;opacity:.95;text-shadow:0 1px 2px rgba(0,0,0,.2)}.level-selector-grid[data-v-83b43401]{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;max-height:500px;overflow-y:auto;padding:4px}.level-selector-card[data-v-83b43401]{background:#f5f5f5;border:2px solid transparent;border-radius:8px;padding:16px;text-align:center;cursor:pointer;position:relative;transition:all .2s}.level-selector-card[data-v-83b43401]:hover{background:#e8e8e8;transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}.level-selector-card.selected[data-v-83b43401]{background:#e6f7ff;border-color:#1890ff}.selector-icon[data-v-83b43401]{font-size:40px;margin-bottom:8px}.selector-name[data-v-83b43401]{font-weight:600;margin-bottom:8px;font-size:14px}.selection-check[data-v-83b43401]{position:absolute;top:8px;right:8px;width:24px;height:24px;background:#1890ff;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px}.series-view[data-v-72b4b671]{padding:24px}.header[data-v-72b4b671]{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px}.header h1[data-v-72b4b671]{font-size:32px;margin:0}.empty-state[data-v-72b4b671]{display:flex;align-items:center;justify-content:center;min-height:400px}.series-grid[data-v-72b4b671]{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.series-card[data-v-72b4b671]{border-radius:16px;overflow:hidden;box-shadow:0 4px 12px #0000001a;transition:transform .2s,box-shadow .2s;position:relative}.series-card[data-v-72b4b671]:hover{transform:translateY(-4px);box-shadow:0 8px 24px #00000026}.series-content[data-v-72b4b671]{padding:24px;color:#fff;min-height:160px;display:flex;flex-direction:column;gap:12px}.series-icon[data-v-72b4b671]{font-size:48px}.series-info h2[data-v-72b4b671]{margin:0;font-size:22px;text-shadow:0 2px 4px rgba(0,0,0,.2)}.series-info p[data-v-72b4b671]{margin:8px 0;opacity:.95;text-shadow:0 1px 2px rgba(0,0,0,.2)}.series-meta[data-v-72b4b671]{display:flex;gap:8px;margin-top:12px}.series-actions[data-v-72b4b671]{padding:12px;background:#fffffff2;display:flex;gap:8px;justify-content:flex-end}.series-detail[data-v-72b4b671]{max-height:70vh;overflow-y:auto}.detail-header[data-v-72b4b671]{padding:32px;border-radius:12px;display:flex;align-items:center;gap:20px;color:#fff;margin-bottom:24px}.detail-icon[data-v-72b4b671]{font-size:72px}.detail-info h2[data-v-72b4b671]{margin:0;font-size:32px;text-shadow:0 2px 4px rgba(0,0,0,.2)}.detail-info p[data-v-72b4b671]{margin:8px 0;opacity:.95;text-shadow:0 1px 2px rgba(0,0,0,.2)}.levels-section h3[data-v-72b4b671]{margin:0 0 16px;font-size:20px}.levels-grid[data-v-72b4b671]{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}.level-detail-card[data-v-72b4b671]{background:#f5f5f5;border-radius:12px;padding:16px;border:2px solid #e0e0e0;transition:all .2s;position:relative}.level-detail-card[data-v-72b4b671]:hover{border-color:#1890ff;box-shadow:0 4px 12px #1890ff1a}.level-number[data-v-72b4b671]{position:absolute;top:12px;right:12px;width:28px;height:28px;background:#1890ff;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:12px}.level-header[data-v-72b4b671]{display:flex;align-items:center;gap:12px;margin-bottom:12px}.level-icon[data-v-72b4b671]{font-size:32px}.level-info h4[data-v-72b4b671]{margin:0;font-size:16px}.level-info p[data-v-72b4b671]{margin:4px 0 0;font-size:12px;color:#666}.level-meta[data-v-72b4b671]{display:flex;gap:8px}.lessons-preview[data-v-72b4b671]{margin-top:8px}.lessons-header[data-v-72b4b671]{font-size:13px;font-weight:600;color:#666;margin-bottom:8px}.lessons-list[data-v-72b4b671]{display:flex;flex-direction:column;gap:6px}.lesson-preview-item[data-v-72b4b671]{display:flex;align-items:center;gap:12px;padding:6px 8px;background:#fff;border-radius:6px;font-size:13px}.lesson-char[data-v-72b4b671]{font-size:20px;font-weight:700;font-family:KaiTi,楷体,serif}.lesson-name[data-v-72b4b671]{color:#1890ff;font-weight:500}.more-lessons[data-v-72b4b671]{padding:6px 8px;text-align:center;color:#666;font-size:12px;font-style:italic}.empty-message[data-v-72b4b671]{padding:40px;text-align:center}@media (max-width: 768px){.series-grid[data-v-72b4b671]{grid-template-columns:1fr}.header[data-v-72b4b671]{flex-direction:column;gap:16px;align-items:flex-start}}.user-stats[data-v-8bfebce6]{max-width:100%}[data-v-52fc29a3] .n-drawer-body-content-wrapper{padding:0}.users-view[data-v-3b52ea44]{max-width:1400px}.word-lookup-view[data-v-b45fe58d]{padding:20px}.loading-state[data-v-b45fe58d]{display:flex;flex-direction:column;align-items:center;gap:12px;padding:40px;color:#666}.detail-content[data-v-b45fe58d]{padding:20px 0}.detail-header[data-v-b45fe58d]{display:flex;align-items:flex-start;gap:30px}.detail-char[data-v-b45fe58d]{font-size:100px;font-weight:700;font-family:KaiTi,楷体,serif;line-height:1}
