@import url(https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@400;600&family=Jost:wght@300;400;500;600&display=swap);#lecture-app{--la-bg:#f5f4f0;--la-surface:#ffffff;--la-border:#e2ded8;--la-border-hover:#c8c3bb;--la-ink:#1c2128;--la-ink-soft:#4a5568;--la-ink-muted:#8a929d;--la-accent:#2a6049;--la-accent-light:#d6ede5;--la-accent-pale:#ebf6f1;--la-radius:10px;--la-radius-sm:6px;--la-shadow-sm:0 1px 3px rgba(0, 0, 0, 0.06),0 1px 2px rgba(0, 0, 0, 0.04);--la-shadow:0 4px 12px rgba(0, 0, 0, 0.07),0 1px 3px rgba(0, 0, 0, 0.05);--la-font-display:'Shippori Mincho','Hiragino Mincho ProN',serif;--la-font-ui:'Jost','Hiragino Kaku Gothic ProN',sans-serif;font-family:var(--la-font-ui);color:var(--la-ink);background:var(--la-bg);-webkit-font-smoothing:antialiased}*,::after,::before{box-sizing:border-box;margin:0;padding:0}button{cursor:pointer;font-family:inherit}select{font-family:inherit}ul{list-style:none}.la-container{max-width:900px;margin:0 auto;padding:0 16px 96px}.la-header{background:var(--la-bg);padding:16px 0 12px;border-bottom:1px solid var(--la-border);margin-bottom:20px}.la-search-wrap{position:relative}.la-filters .la-search-wrap{margin-bottom:0}.la-search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--la-ink-muted);pointer-events:none}.la-search-input{width:100%;height:46px;padding:0 16px 0 44px;border:1.5px solid var(--la-border);border-radius:var(--la-radius);background:var(--la-surface);font-size:15px;color:var(--la-ink);outline:0;transition:border-color .18s,box-shadow .18s}.la-search-input::placeholder{color:var(--la-ink-muted)}.la-search-input:focus{border-color:var(--la-accent);box-shadow:0 0 0 3px rgba(42,96,73,.12)}.la-filter-accordion{margin-top:4px;background:var(--la-surface);border:1.5px solid var(--la-border);border-radius:var(--la-radius);box-shadow:var(--la-shadow-sm)}.la-accordion-toggle{display:flex;align-items:center;gap:6px;width:100%;padding:10px 14px;background:0 0;border:none;cursor:pointer;font-size:13px;font-weight:600;color:var(--la-ink-soft);text-align:left;border-radius:var(--la-radius);transition:background .15s}.la-accordion-toggle:hover{background:var(--la-accent-pale)}.la-accordion-chevron{width:16px;height:16px;flex-shrink:0;color:var(--la-ink-muted);transition:transform .22s ease}.la-accordion-toggle[aria-expanded=false] .la-accordion-chevron{transform:rotate(-90deg)}.la-accordion-label{flex-shrink:0}.la-accordion-summary{display:flex;flex-wrap:wrap;gap:4px;margin-left:4px;min-width:0}.la-accordion-chip{display:inline-flex;align-items:center;padding:2px 8px;border-radius:20px;background:var(--la-accent-light);color:var(--la-accent);font-size:11px;font-weight:500;white-space:nowrap;max-width:120px;overflow:hidden;text-overflow:ellipsis}.la-filters{display:flex;flex-direction:column;gap:10px;padding:12px 14px 14px;border-top:1.5px solid var(--la-border);overflow:hidden;max-height:800px;transition:max-height .28s ease,padding .28s ease,border-color .28s ease}.la-filters--collapsed{max-height:0;padding:0;border-color:transparent}.la-filter-group{display:grid;grid-template-columns:80px 1fr;align-items:center;gap:8px}.la-filter-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--la-ink-muted)}.la-chip-group{display:flex;flex-wrap:wrap;gap:6px}.la-filter-chip{display:inline-flex;align-items:center;padding:5px 12px;border:1.5px solid var(--la-border);border-radius:20px;font-size:13px;color:var(--la-ink-soft);cursor:pointer;user-select:none;transition:border-color .15s,background .15s,color .15s;line-height:1}.la-filter-chip:hover{border-color:var(--la-border-hover);color:var(--la-ink)}.la-filter-chip input[type=checkbox]{position:absolute;opacity:0;width:0;height:0;pointer-events:none}.la-filter-chip:has(input:checked){background:var(--la-accent);border-color:var(--la-accent);color:#fff}.la-tag-selector{display:flex;flex-direction:column;gap:8px}.la-tag-input-wrap{position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:6px;min-height:38px;padding:5px 10px;border:1.5px solid var(--la-border);border-radius:var(--la-radius-sm);background:var(--la-surface);transition:border-color .15s,box-shadow .15s;cursor:text}.la-tag-input-wrap:focus-within{border-color:var(--la-accent);box-shadow:0 0 0 3px rgba(42,96,73,.12)}.la-tag-selected-chips{display:contents}.la-tag-selected-chip{display:inline-flex;align-items:center;gap:4px;padding:3px 4px 3px 10px;background:var(--la-accent);color:#fff;border-radius:16px;font-size:12px;line-height:1.4}.la-tag-selected-chip-remove{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px;border:none;background:rgba(255,255,255,.15);color:#fff;border-radius:50%;font-size:12px;line-height:1;padding:0;transition:background .15s}.la-tag-selected-chip-remove:hover{background:rgba(0,0,0,.25)}.la-tag-search-input{flex:1;min-width:120px;border:none;outline:0;background:0 0;font-size:13px;font-family:inherit;color:var(--la-ink);padding:3px 0}.la-tag-search-input::placeholder{color:var(--la-ink-muted)}.la-tag-suggestions{position:absolute;top:calc(100% + 4px);left:0;right:0;z-index:50;max-height:260px;overflow-y:auto;background:var(--la-surface);border:1.5px solid var(--la-border);border-radius:var(--la-radius-sm);box-shadow:var(--la-shadow)}.la-tag-suggestion{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;font-size:13px;color:var(--la-ink);cursor:pointer;transition:background .1s}.la-tag-suggestion--active,.la-tag-suggestion:hover{background:var(--la-accent-pale)}.la-tag-suggestion-count{color:var(--la-ink-muted);font-size:11px;margin-left:12px}.la-tag-suggestion-empty{padding:12px;text-align:center;color:var(--la-ink-muted);font-size:13px}.la-tag-popular{display:flex;flex-wrap:wrap;align-items:center;gap:6px}.la-tag-popular-label{font-size:11px;color:var(--la-ink-muted);margin-right:2px}.la-tag-popular-chip{display:inline-flex;align-items:center;padding:4px 11px;border:1px solid var(--la-border);border-radius:20px;font-size:12px;color:var(--la-ink-soft);background:0 0;cursor:pointer;line-height:1.4;transition:border-color .15s,color .15s,background .15s}.la-tag-popular-chip:hover{border-color:var(--la-border-hover);color:var(--la-ink)}.la-tag-popular-chip--selected{background:var(--la-accent-pale);border-color:var(--la-accent);color:var(--la-accent)}.la-tag-more{border:none;background:0 0;color:var(--la-accent);font-size:12px;cursor:pointer;padding:4px 6px}.la-tag-more:hover{text-decoration:underline}.la-select{height:38px;padding:0 30px 0 12px;border:1.5px solid var(--la-border);border-radius:var(--la-radius-sm);background:var(--la-surface);font-size:14px;color:var(--la-ink);appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238A929D' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;outline:0;transition:border-color .15s;cursor:pointer}.la-select:focus{border-color:var(--la-accent);box-shadow:0 0 0 3px rgba(42,96,73,.12)}.la-filter-reset{height:38px;padding:0 14px;border:1.5px solid var(--la-border);border-radius:var(--la-radius-sm);background:0 0;font-size:13px;color:var(--la-ink-muted);transition:color .15s,border-color .15s;align-self:flex-end}.la-filter-reset:hover{color:var(--la-ink);border-color:var(--la-border-hover)}.la-status-bar{font-size:13px;color:var(--la-ink-muted);margin-bottom:16px;min-height:20px}.la-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:60px 20px;text-align:center;color:var(--la-ink-soft)}.la-state svg{width:40px;height:40px;opacity:.4}.la-state p{font-size:15px}.la-state[hidden]{display:none}.la-spinner{display:flex;gap:6px}.la-spinner span{width:8px;height:8px;border-radius:50%;background:var(--la-accent);animation:la-bounce .8s ease-in-out infinite}.la-spinner span:nth-child(2){animation-delay:.15s}.la-spinner span:nth-child(3){animation-delay:.3s}@keyframes la-bounce{0%,100%,80%{transform:scale(.6);opacity:.4}40%{transform:scale(1);opacity:1}}.la-card-list{display:flex;flex-direction:column;gap:12px}.la-card-list[hidden]{display:none}.la-card{position:relative;background:var(--la-surface);border:1.5px solid var(--la-border);border-radius:var(--la-radius);padding:18px 18px 16px 20px;box-shadow:var(--la-shadow-sm);transition:border-color .18s,box-shadow .18s,background .18s;cursor:pointer;display:grid;grid-template-columns:24px 1fr;gap:0 14px}.la-card:hover{border-color:var(--la-border-hover);box-shadow:var(--la-shadow)}.la-card:focus-within{outline:2px solid var(--la-accent);outline-offset:2px}.la-card--selected{background:var(--la-accent-pale);border-color:var(--la-accent)}.la-card-checkbox-wrap{padding-top:2px}.la-card-checkbox{width:18px;height:18px;border:2px solid var(--la-border-hover);border-radius:4px;background:var(--la-surface);appearance:none;cursor:pointer;transition:background .15s,border-color .15s;position:relative}.la-card-checkbox::after{content:'';position:absolute;top:2px;left:3px;width:10px;height:7px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg);opacity:0;transition:opacity .12s}.la-card-checkbox:checked{background:var(--la-accent);border-color:var(--la-accent)}.la-card-checkbox:checked::after{opacity:1}.la-card-checkbox:disabled{opacity:.4;cursor:default}.la-card-body{min-width:0}.la-card-top{display:flex;align-items:flex-start;gap:8px;margin-bottom:6px;flex-wrap:wrap}.la-card-title{font-family:var(--la-font-display);font-size:17px;font-weight:600;color:var(--la-ink);line-height:1.4;flex:1;min-width:0;cursor:pointer}.la-badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:600;letter-spacing:.04em;white-space:nowrap;flex-shrink:0}.la-badge--format-single{background:#ebf6f1;color:#2a6049}.la-badge--format-other{background:#fef0ee;color:#c0392b}.la-card-meta{display:flex;flex-wrap:wrap;gap:4px 16px;font-size:13px;color:var(--la-ink-muted);margin-bottom:8px}.la-card-meta-item{display:flex;align-items:center;gap:4px}.la-card-desc{font-size:14px;color:var(--la-ink-soft);line-height:1.6;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.la-card-footer{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}.la-detail-link{font-size:13px;color:var(--la-accent);text-decoration:none;font-weight:500;display:inline-flex;align-items:center;gap:4px;transition:opacity .15s}.la-detail-link:hover{opacity:.75}.la-selection-bar{position:fixed;bottom:0;left:0;right:0;z-index:200;background:var(--la-surface);border-top:1.5px solid var(--la-border);box-shadow:0 -4px 20px rgba(0,0,0,.08);padding:12px 16px;transform:translateY(100%);transition:transform .25s cubic-bezier(.34, 1.56, .64, 1)}.la-selection-bar--visible{transform:translateY(0)}.la-selection-inner{max-width:900px;margin:0 auto;display:flex;align-items:center;gap:12px}.la-selection-info{font-size:14px;color:var(--la-ink-soft);white-space:nowrap}.la-selection-info strong{color:var(--la-accent);font-size:16px}.la-selection-chips{display:flex;gap:6px;flex-wrap:nowrap;overflow:hidden;flex:1}.la-chip{display:flex;align-items:center;padding:4px 10px;background:var(--la-accent-light);border-radius:20px;font-size:12px;color:var(--la-accent);font-weight:500;white-space:nowrap;max-width:160px;overflow:hidden;text-overflow:ellipsis}.la-btn{display:inline-flex;align-items:center;gap:6px;padding:0 20px;height:42px;border-radius:var(--la-radius-sm);font-size:14px;font-weight:600;border:none;transition:background .15s,opacity .15s,transform .1s;white-space:nowrap}.la-btn:active{transform:scale(.98)}.la-btn-primary{background:var(--la-accent);color:#fff}.la-btn-primary:hover:not(:disabled){background:#235240}.la-btn-primary:disabled{background:var(--la-border);color:var(--la-ink-muted);cursor:not-allowed}.la-btn-outline{background:0 0;border:1.5px solid var(--la-border-hover);color:var(--la-ink-soft)}.la-btn-outline:hover{border-color:var(--la-ink-soft)}@media (max-width:640px){.la-filters{gap:10px}.la-filter-reset{width:100%;text-align:center}.la-card-title{font-size:15px}.la-selection-chips{display:none}}