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var(--os-border,#e0e0e0);-webkit-overflow-scrolling:touch;gap:2px;margin-bottom:16px;padding-bottom:0;display:flex;overflow-x:auto}.finder__tab{font-size:12px;font-family:var(--os-font-mono,"SF Mono","Menlo",monospace);color:var(--os-text-secondary,#666);white-space:nowrap;border-bottom:2px solid #0000;padding:6px 12px;text-decoration:none;transition:color .1s,border-color .1s}.finder__tab i{margin-right:4px;font-size:11px}.finder__tab:hover{color:var(--os-text-primary,#333)}.finder__tab:focus-visible{outline:2px solid var(--os-accent,#007aff);outline-offset:-2px}.finder__tab.active{color:var(--os-accent,#007aff);border-bottom-color:var(--os-accent,#007aff)}.finder__grid--files{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px;margin-bottom:16px}.finder__file{color:var(--os-text-primary,#333);text-align:center;cursor:pointer;font:inherit;background:0 0;border:none;border-radius:8px;flex-direction:column;align-items:center;gap:6px;padding:8px 4px;text-decoration:none;transition:background-color .1s;display:flex}.finder__file:hover{background:var(--os-hover-bg,#0000000a);color:var(--os-text-primary,#333)}.finder__file:focus-visible{outline:2px solid var(--os-accent,#007aff);outline-offset:-2px;border-radius:8px}.finder__file-thumb{background:var(--os-hover-bg,#f0f0f0);border-radius:4px;width:80px;height:110px;overflow:hidden;box-shadow:0 1px 3px #0000001f}.finder__file-thumb img{object-fit:cover;width:100%;height:100%;display:block}.finder__file-icon{background:var(--os-hover-bg,#f0f0f0);border-radius:8px;justify-content:center;align-items:center;width:80px;height:80px;display:flex}.finder__file-icon i{color:var(--os-accent,#007aff);font-size:28px}.finder__file-name{overflow-wrap:break-word;word-break:break-word;max-width:100%;font-size:11px;line-height:1.3;font-family:var(--os-font-mono,"SF 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i{font-size:18px}.finder__grid--list .finder__file-thumb{border-radius:2px;flex-shrink:0;width:32px;height:44px}.finder__grid--list .finder__file-name{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.finder__grid--list .finder__file-meta{flex-shrink:0}.finder__grid--list .finder__folder-name{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.finder__empty{height:100%;min-height:300px;color:var(--os-text-tertiary,#6b6b6b);text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex}.finder__empty i{opacity:.4;margin-bottom:12px;font-size:48px}.finder__empty p{margin-bottom:8px;font-size:14px}.finder__empty a{color:var(--os-accent,#007aff);font-size:13px;text-decoration:none}.finder__empty a:hover{text-decoration:underline}.finder__folder-count{font-size:10px;font-family:var(--os-font-mono,"SF Mono","Menlo",monospace);color:var(--os-text-tertiary,#6b6b6b)}.finder__file-icon--ppt{background:linear-gradient(135deg,#fff0e6 0%,#ffe0cc 100%);border:1px solid #f0c8a0}.finder__file-icon--ppt i{color:#d35230;font-size:32px}.finder__file.is-active{background:var(--os-accent-light,#007aff14);outline:2px solid var(--os-accent,#007aff);outline-offset:-2px;border-radius:8px}.finder__grid--courses{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}.finder__preview{border:1px solid var(--os-border,#e0e0e0);background:var(--os-sidebar-bg,#f5f5f7);text-align:center;border-radius:10px;flex-direction:column;align-items:center;gap:8px;margin-top:16px;padding:20px;display:flex}.finder__preview-icon{width:64px;height:64px;color:var(--os-text-primary,#333);justify-content:center;align-items:center;margin-bottom:4px;display:flex}.finder__preview-title{font-size:16px;font-weight:600;font-family:var(--os-font-mono,"SF Mono","Menlo",monospace);color:var(--os-text-primary,#333);margin:0}.finder__preview-badge{text-transform:uppercase;letter-spacing:.04em;color:#2e7d32;background:#e8f5e9;border-radius:4px;padding:2px 8px;font-size:10px;font-weight:600;display:inline-block}.finder__preview-desc{color:var(--os-text-secondary,#666);max-width:480px;margin:4px 0 8px;font-size:13px;line-height:1.5}.finder__preview-btn{background:var(--os-accent,#007aff);color:#fff;font-size:13px;font-weight:600;font-family:var(--os-font-mono,"SF Mono","Menlo",monospace);border-radius:6px;align-items:center;gap:6px;padding:8px 20px;text-decoration:none;transition:background-color .15s;display:inline-flex}.finder__preview-btn:hover{color:#fff;background:#005ecb}.finder__preview-btn:focus-visible{outline:2px solid var(--os-accent,#007aff);outline-offset:2px}.finder__preview-btn i{font-size:11px}.ql-overlay{z-index:200;opacity:0;pointer-events:none;justify-content:center;align-items:center;transition:opacity .2s;display:flex;position:fixed;inset:0}.ql-overlay.is-open{opacity:1;pointer-events:auto}.ql-overlay__backdrop{background:#0009;position:absolute;inset:0}.ql-overlay__panel{background:var(--os-sidebar-bg,#f5f5f7);border:1px solid var(--os-border,#d1d1d6);text-align:center;border-radius:12px;flex-direction:column;align-items:center;gap:8px;width:min(400px,90vw);max-height:85vh;padding:2rem 2rem 1.5rem;display:flex;position:relative;overflow-y:auto;box-shadow:0 20px 60px #0000004d}.ql-overlay__close{color:var(--os-text-secondary,#888);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:4px 8px;font-size:16px;position:absolute;top:10px;right:12px}.ql-overlay__close:hover{color:var(--os-text-primary,#333);background:#0000000f}.ql-overlay__close:focus-visible{outline:2px solid var(--os-accent,#007aff);outline-offset:2px}.ql-overlay__icon{width:64px;height:64px;color:var(--os-text-primary,#333);justify-content:center;align-items:center;margin-bottom:4px;display:flex}.ql-overlay__title{font-size:18px;font-weight:700;font-family:var(--os-font-mono,"SF Mono","Menlo",monospace);color:var(--os-text-primary,#333);margin:0}.ql-overlay__badge{text-transform:uppercase;letter-spacing:.04em;color:#2e7d32;background:#e8f5e9;border-radius:4px;padding:2px 8px;font-size:10px;font-weight:600;display:inline-block}.ql-overlay__desc{color:var(--os-text-secondary,#666);max-width:340px;margin:4px 0 8px;font-size:13px;line-height:1.5}.ql-overlay__actions{gap:8px;margin-top:4px;display:flex}.ql-overlay__btn{font-size:13px;font-weight:600;font-family:var(--os-font-mono,"SF Mono","Menlo",monospace);cursor:pointer;border:none;border-radius:6px;align-items:center;gap:6px;padding:8px 20px;text-decoration:none;transition:background-color .15s;display:inline-flex}.ql-overlay__btn--start{background:var(--os-accent,#007aff);color:#fff}.ql-overlay__btn--start:hover{color:#fff;background:#005ecb}.ql-overlay__btn--close{color:var(--os-text-primary,#333);background:#0000000f}.ql-overlay__btn--close:hover{background:#0000001a}.ql-overlay__btn:focus-visible{outline:2px solid var(--os-accent,#007aff);outline-offset:2px}.ql-overlay__btn i{font-size:11px}@media (prefers-reduced-motion:reduce){.ql-overlay{transition:none}}.finder__course-descriptions{border-top:1px solid var(--os-border,#d1d1d6);margin-top:16px;padding:20px 16px 8px}.finder__course-descriptions-heading{font:600 13px var(--os-font-mono,"SF Mono","Menlo",monospace);color:var(--os-text-secondary,#666);text-transform:uppercase;letter-spacing:.04em;margin:0 0 12px}.finder__course-card{background:var(--os-sidebar-bg,#f5f5f7);border:1px solid var(--os-border,#d1d1d6);border-radius:8px;margin-bottom:10px;padding:12px 16px}.finder__course-card:last-child{margin-bottom:0}.finder__course-card-title{font:600 14px var(--os-font-mono,"SF Mono","Menlo",monospace);color:var(--os-text-primary,#333);margin:0 0 6px}.finder__course-card-title i{color:var(--os-accent,#007aff);margin-right:6px;font-size:13px}.finder__course-card-desc{color:var(--os-text-secondary,#666);margin:0 0 6px;font-size:13px;line-height:1.5}.finder__course-card-duration{color:var(--os-text-secondary,#888);margin:0;font-size:12px}.finder__course-card-duration i{margin-right:4px;font-size:11px}.finder__section{margin-bottom:8px}.finder__section-header{font:600 12px var(--os-font-mono,"SF Mono","Menlo",monospace);color:var(--os-text-primary,#333);cursor:pointer;text-align:left;background:0 0;border:none;align-items:center;gap:6px;width:100%;padding:8px 0;display:flex}.finder__section-header:after{content:"";background:var(--os-border,#e0e0e0);flex:1;height:1px;margin-left:8px}.finder__section-header>i{flex-shrink:0;font-size:10px;transition:transform .2s}.finder__section-header[aria-expanded=false]>i{transform:rotate(-90deg)}.finder__section-header[aria-expanded=false]+.finder__section-body{display:none}.finder__section-header:focus-visible{outline:2px solid var(--os-accent,#007aff);outline-offset:2px}.finder__section-count{color:var(--os-text-tertiary,#6b6b6b);font-weight:400}.finder__section-body{padding:8px 0 16px}.finder__sidebar-desc{color:var(--os-text-secondary,#666);padding:4px 12px 8px;font-size:11px;line-height:1.5}.finder__file-icon--courses{background:linear-gradient(135deg,#e3f2fd,#bbdefb)}.finder__file-icon--courses i{color:#1565c0}.finder__file-icon--counting{background:linear-gradient(135deg,#e8f5e9,#c8e6c9)}.finder__file-icon--counting i{color:#2e7d32}.finder__file-icon--time{background:linear-gradient(135deg,#fff8e1,#ffecb3)}.finder__file-icon--time i{color:#f57f17}.finder__file-icon--alphabet{background:linear-gradient(135deg,#fce4ec,#f8bbd0)}.finder__file-icon--alphabet i{color:#c62828}.finder__file-icon--game{background:linear-gradient(135deg,#f3e5f5,#e1bee7);position:relative}.finder__file-icon--premium{background:linear-gradient(135deg,#fff3e0,#ffe0b2);position:relative}.finder__file-icon--premium i{color:#e65100}.finder__file-badge{text-transform:uppercase;color:#fff;font-size:8px;font-weight:700;font-family:var(--os-font-mono,"SF Mono","Menlo",monospace);letter-spacing:.02em;z-index:1;background:#ff9800;border-radius:3px;padding:1px 5px;position:absolute;top:-4px;right:-4px}.finder__file-badge--beginner{color:#fff;background:#4caf50}.finder__file-badge--intermediate{color:#fff;background:#2196f3}.finder__file-badge--hard{color:#fff;background:#e53935}.finder__postit{background:#fef3c7;border:1px solid #d9af4240;border-radius:4px;max-width:480px;padding:20px;box-shadow:0 2px 8px #0000000f}.finder__postit-title{font-family:var(--os-font-mono,"SF Mono","Menlo",monospace);text-transform:uppercase;letter-spacing:.08em;color:#92400e;margin-bottom:8px;font-size:9px;font-weight:700}.finder__postit-title i{margin-right:4px}.finder__postit-date{font-family:var(--os-font-mono,"SF Mono","Menlo",monospace);color:#b45309;margin-bottom:4px;font-size:10px}.finder__postit-word{font-family:var(--lx-font-heading,Georgia,serif);color:#78350f;margin-bottom:4px;font-size:1.5rem;font-weight:700;line-height:1.2}.finder__postit-meaning{color:#92400e;margin-bottom:10px;font-size:.85rem;line-height:1.4}.finder__postit-cta{font-family:var(--os-font-mono,"SF Mono","Menlo",monospace);color:var(--os-accent,#007aff);margin-bottom:12px;font-size:11px;font-weight:600;text-decoration:none;display:inline-block}.finder__postit-cta:hover{text-decoration:underline}.finder__postit-cta:focus-visible{outline:2px solid var(--os-accent,#007aff);outline-offset:2px}.finder__postit-form{margin-top:8px}.finder__postit-form-row{flex-wrap:wrap;gap:6px;display:flex}.finder__postit-input{min-width:120px;font-size:12px;font-family:var(--os-font-mono,"SF Mono","Menlo",monospace);color:#78350f;background:#fffbeb;border:1px solid #d4a94a;border-radius:4px;flex:1;padding:5px 8px}.finder__postit-input::placeholder{color:#b8860b;opacity:.6}.finder__postit-input:focus{outline:2px solid var(--os-accent,#007aff);outline-offset:-1px;border-color:var(--os-accent,#007aff)}.finder__postit-btn{background:var(--lx-primary,#c14850);color:#fff;font-size:12px;font-weight:600;font-family:var(--os-font-mono,"SF Mono","Menlo",monospace);cursor:pointer;white-space:nowrap;border:none;border-radius:4px;align-items:center;gap:5px;padding:5px 12px;transition:background-color .15s;display:inline-flex}.finder__postit-btn:hover{background:#a03c43}.finder__postit-btn:focus-visible{outline:2px solid var(--os-accent,#007aff);outline-offset:2px}.finder__postit-btn:disabled{opacity:.6;cursor:not-allowed}.finder__postit-btn i{font-size:11px}.finder__postit-privacy{color:#92400e;opacity:.7;margin:6px 0 0;font-size:9px}.finder__postit-privacy i{margin-right:3px;font-size:8px}@media (max-width:991.98px){.finder__sidebar{width:160px;min-width:160px}}@media (max-width:767.98px){.finder__view-toggle,.finder__sidebar{display:none}.finder__grid{grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:4px}.finder__folder i{font-size:32px}.finder__grid--files{grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:8px}.finder__file-thumb{width:64px;height:88px}.finder__file-icon{width:64px;height:64px}.finder__file-icon i{font-size:24px}.finder__grid--courses{grid-template-columns:repeat(auto-fill,minmax(110px,1fr))}.ql-overlay__panel{padding:1.5rem 1rem 1rem}.finder__main{padding:12px}.finder__postit-form-row{flex-direction:column}.finder__postit-btn{justify-content:center;width:100%}}