.preview-overlay{position:fixed;inset:0;background:#00000073;display:flex;align-items:flex-end;justify-content:center;z-index:1100}.preview-panel{width:min(820px,100%);background:var(--surface, #fff);border-radius:16px 16px 0 0;box-shadow:0 -6px 24px #0000002e;padding:16px;animation:slideUp .15s ease-out}@keyframes slideUp{0%{transform:translateY(12px);opacity:0}to{transform:translateY(0);opacity:1}}.preview-header{display:grid;grid-template-columns:64px 1fr auto;gap:12px;align-items:center}.preview-artwork{width:64px;height:64px;object-fit:cover;border-radius:8px;box-shadow:var(--shadow-sm, 0 1px 2px rgba(0,0,0,.08))}.preview-overline{font-size:12px;letter-spacing:.08em;color:var(--text-color-muted);text-transform:uppercase}.preview-title{font-weight:700;line-height:1.2}.preview-subtitle{font-size:.95rem;color:var(--text-color-secondary)}.preview-close{appearance:none;border:0;background:transparent;font-size:18px;line-height:1;padding:8px;cursor:pointer;color:var(--text-color)}.preview-text{margin:12px 0 6px;padding:12px;border:1px solid var(--border-color);border-radius:10px;background:var(--surface, #fff);max-height:140px;overflow:auto}.preview-error{margin:12px 0 6px;padding:10px;border-radius:8px;border:1px solid #d92d20;background:#fff6f6;color:#b42318}.preview-controls{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:center;margin-top:8px}.preview-play{appearance:none;border:0;border-radius:12px;padding:10px 16px;background:var(--accent-color);color:#fff;font-weight:700;cursor:pointer}.preview-play:disabled{opacity:.6;cursor:not-allowed}.preview-timeline{display:grid;grid-template-columns:auto 1fr auto;gap:8px;align-items:center}.preview-timeline input[type=range]{width:100%}.preview-time{font-variant-numeric:tabular-nums;color:var(--text-color-secondary);min-width:40px;text-align:center}.preview-footnote{margin-top:8px;font-size:.85rem;color:var(--text-color-muted)}:root{--header-background-color: #ffffff;--header-link-color: #12203b;--logo-background-color: #12203b;--main-background-color: #ffffff;--primary-color: #1e3a8a;--accent-color: #3b82f6;--text-color: #111827;--text-color-secondary: #697484;--text-color-muted: #6b7280;--text-color-tertiary: #a8a8a8;--background-color: #ffffff;--background-color-secondary: #f9fafb;--border-color: #cdcdcd;--focus-ring-color: #2563eb;--container-max-width: 1120px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .06);--shadow-md: 0 4px 20px rgba(0, 0, 0, .08);--shadow-lg: 0 12px 40px rgba(0, 0, 0, .15);--default-font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--rainbow-gradient: linear-gradient(60deg, rgba(110, 65, 170, .7), rgba(210, 63, 167, .7), rgba(255, 95, 100, .7), rgba(239, 167, 48, .7), rgba(183, 223, 57, .7), rgba(62, 232, 111, .7), rgba(27, 199, 194, .7), rgba(66, 125, 224, .7))}html,body,#root{height:100%;margin:0}*,*:before,*:after{box-sizing:border-box}img{max-width:100%;height:auto;display:block}button{font:inherit;border:none;background:none;cursor:pointer}a{color:inherit;text-decoration:none}:focus-visible{outline:2px solid var(--focus-ring-color);outline-offset:2px}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}body{font-family:var(--default-font-family);color:var(--text-color);background-color:var(--main-background-color)}#root{display:flex;flex-direction:column;min-height:100vh}.skip-link{position:absolute;left:-9999px;top:0}.skip-link:focus{left:16px;top:12px;background:#fff;border:1px solid var(--border-color);padding:8px 12px;border-radius:8px;z-index:2000}header,.header{background-color:var(--header-background-color);color:var(--header-link-color);height:60px;flex-shrink:0;position:sticky;top:0;left:0;right:0;z-index:1001;padding:0 20px;border-bottom:1px solid var(--border-color);-webkit-backdrop-filter:saturate(120%);backdrop-filter:saturate(120%);transition:box-shadow .18s ease,background-color .18s ease,border-color .18s ease}.header--elevated{box-shadow:0 6px 16px #0000000f;background-color:#ffffffd9;-webkit-backdrop-filter:blur(6px) saturate(120%);backdrop-filter:blur(6px) saturate(120%)}header .container{max-width:var(--container-max-width);height:100%;display:flex;align-items:center;justify-content:space-between;margin:0 auto}main{background-color:var(--main-background-color);padding:20px;flex:1 0 auto}.container{margin:0 auto;width:100%;box-sizing:border-box}main .container{max-width:var(--container-max-width)}footer{padding:10px;text-align:center;flex-shrink:0;border-top:1px solid var(--border-color);color:var(--text-color-secondary)}.btn{appearance:none;border:1px solid transparent;border-radius:12px;padding:.55rem .9rem;font-weight:700;line-height:1;transition:transform .12s ease,box-shadow .12s ease,background-color .12s ease,border-color .12s ease;display:inline-flex;align-items:center;gap:8px}.btn:disabled,.btn[aria-disabled=true]{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--accent-color);color:#fff;box-shadow:0 6px 18px #0000001f}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 10px 24px #00000024}.btn-secondary{background:var(--background-color-secondary);color:var(--text-color);border-color:var(--border-color)}.btn-secondary:hover{transform:translateY(-1px)}.loading-container,.error-container{display:grid;gap:12px;justify-items:center;padding:24px 0;color:var(--text-color-secondary)}.loading-spinner{width:28px;height:28px;border-radius:50%;border:3px solid #e5e7eb;border-top-color:var(--accent-color);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.notice{border:1px dashed var(--border-color);border-radius:var(--radius-md);padding:1rem;background:var(--background-color-secondary)}.breadcrumbs{display:flex;align-items:center;gap:8px;font-size:.95rem;color:var(--text-color-secondary);margin-bottom:12px}.breadcrumbs a{color:var(--header-link-color)}.breadcrumbs-sep{opacity:.5}.home-hero{display:grid;gap:12px;padding:24px 0 8px}.home-hero-title{font-size:clamp(1.8rem,1.4rem + 1.8vw,2.6rem);font-weight:800;letter-spacing:-.01em;margin:0}.home-hero-sub{color:var(--text-color-secondary);margin:0}.home-hero-actions{display:flex;gap:10px;flex-wrap:wrap}.skeleton{position:relative;background:#ececec;border-radius:8px;overflow:hidden}.skeleton:after{content:"";position:absolute;inset:0;transform:translate(-100%);background:linear-gradient(90deg,#fff0,#fff9,#fff0);animation:shimmer 1.2s infinite}@keyframes shimmer{to{transform:translate(100%)}}.nav-logo{display:inline-flex;align-items:center;gap:.75rem;white-space:nowrap}.nav-logo-link{display:inline-flex;align-items:center;gap:.75rem}.header-title{font-size:20px;margin:0}.logo{background:var(--logo-background-color);border-radius:50%;height:32px;width:32px}.nav-menu{display:flex;align-items:center}.nav-list{display:flex;list-style:none;margin:0;padding:0;gap:1.5rem}.nav-link{color:var(--header-link-color);text-decoration:none;transition:opacity .2s ease,background-color .2s ease;padding:6px 10px;border-radius:10px}.nav-link:hover{background:#1118270f}.nav-link--active{background:#3b82f61f;color:var(--primary-color);font-weight:700}.menu{display:none;flex-direction:column;background:none;border:none;cursor:pointer;padding:5px;gap:4px}.menu-line{width:25px;height:3px;background-color:var(--header-link-color);transition:all .3s ease;border-radius:2px}@media (max-width: 768px){.menu{display:flex}.nav-menu{position:absolute;top:60px;left:0;right:0;background-color:var(--header-background-color);display:flex;flex-direction:column;align-items:stretch;opacity:0;visibility:hidden;transition:all .3s ease;box-shadow:0 4px 6px #0000001a;z-index:1002;max-height:0;overflow:hidden;border-bottom:1px solid var(--border-color)}.nav-menu--open{opacity:1;visibility:visible;max-height:220px}.nav-list{flex-direction:column;gap:0;padding:.5rem 0;margin:0}.nav-list li{border-bottom:1px solid var(--border-color)}.nav-list li:last-child{border-bottom:none}.nav-link{display:block;padding:1rem 1.25rem;font-size:1.05rem;border-radius:0}.menu--open .menu-line:nth-child(1){transform:rotate(45deg) translate(6px,6px)}.menu--open .menu-line:nth-child(2){opacity:0}.menu--open .menu-line:nth-child(3){transform:rotate(-45deg) translate(6px,-6px)}}.topic-hero{display:flex;flex-direction:column;margin-bottom:1.75rem}.topic-hero-image{position:relative;width:100%;aspect-ratio:16 / 9;overflow:hidden;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);isolation:isolate}.topic-hero-image:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#0000 35%,#0000002e 85%);pointer-events:none}.topic-hero-image .hero-image{width:100%;height:100%;object-fit:cover}.hero-play-button{position:absolute;right:16px;bottom:16px;width:56px;height:56px;border:0;border-radius:50%;background:var(--accent-color);color:#fff;display:inline-flex;align-items:center;justify-content:center;box-shadow:0 6px 18px #0003;cursor:pointer}.hero-play-button:disabled{opacity:.6;cursor:not-allowed}.hero-play-button .icon{width:22px;height:22px}.topic-hero-content{padding-top:1rem}.topic-hero-title{font-size:2rem;font-weight:800;letter-spacing:-.01em;margin:0 0 .35rem}.topic-hero-description{margin:0 0 .65rem;color:var(--text-color-secondary);line-height:1.6}.topic-hero-actions{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap}.topic-duration-pill{background:var(--background-color-secondary);color:var(--text-color);border:1px solid var(--border-color);padding:.35rem .8rem;border-radius:999px;font-weight:600;font-size:.95rem}.btn-icon{display:inline-flex;align-items:center;gap:8px}.btn-icon .icon{width:16px;height:16px}.section-card{background:var(--background-color);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);padding:1rem;margin-bottom:1.25rem;border:1px solid var(--border-color)}.section-header{margin-bottom:.75rem}.section-title{font-size:1.35rem;font-weight:700;margin:.25rem 0 0}.section-description{font-size:.95rem;color:var(--text-color-secondary)}.narrative-paragraph{margin:.5rem 0 0;line-height:1.6;color:var(--text-color)}.entity-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1rem}.entity-card{background:var(--background-color);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);padding:.9rem;border:1px solid var(--border-color)}.entity-title{font-size:1.05rem;font-weight:700;margin:.25rem 0}.entity-description{font-size:.9rem;color:var(--text-color-secondary);margin:.35rem 0 .5rem;line-height:1.5}.entity-footer{color:var(--text-color-tertiary)}.playlist-section{margin-top:1.75rem}.playlist-heading{font-size:1.3rem;font-weight:700;margin-bottom:1rem}.playlist-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1rem}.playlist-card{background:var(--background-color-secondary);padding:.75rem;border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.topic-category-section{margin-top:2rem}.topic-category-heading{font-size:1.3rem;font-weight:700;margin-bottom:1rem}.topic-category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:.75rem}.topic-category-card{display:block;background:var(--background-color-secondary);padding:.5rem .75rem;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);text-decoration:none;color:var(--text-color);font-weight:500;transition:transform .15s ease,box-shadow .15s ease}.topic-category-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.topic-category-title{font-size:.95rem}.category-list-container{max-width:1200px;margin:0 auto;padding:2rem 0}.category-list-header{text-align:center;margin-bottom:2.25rem}.category-list-header--left{text-align:left}.category-list-title{font-size:2.25rem;font-weight:800;margin:0 0 .25rem;color:var(--text-color);letter-spacing:-.01em}.category-list-subtitle{color:var(--text-color-secondary);margin:.25rem 0 .5rem;font-size:1.05rem}.category-list-count{color:var(--text-color-muted);font-size:.95rem;margin:.25rem 0 0}.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.75rem;margin-top:1.5rem}.category-card{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;border:1px solid var(--border-color);position:relative}.category-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.category-card-image{height:200px;overflow:hidden;position:relative;background:linear-gradient(135deg,#f3f4f6,#e5e7eb)}.category-image{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.category-card:hover .category-image{transform:scale(1.04)}.category-card-content{padding:1.25rem 1.25rem 1rem}.category-card .category-title{margin:0 0 .5rem;font-size:1.2rem;font-weight:700;line-height:1.4}.category-description{color:#6b7280;font-size:.95rem;line-height:1.5;margin:0 0 .85rem;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}.category-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto}.topic-count{background:var(--background-color-secondary);color:var(--text-color);padding:.4rem .75rem;border-radius:999px;font-size:.85rem;font-weight:600;border:1px solid var(--border-color)}.category-card-link{text-decoration:none;color:inherit;display:block}.category-hero{margin-bottom:2rem}.category-hero-image{width:100%;height:220px;overflow:hidden;box-shadow:var(--shadow-md);border-radius:var(--radius-lg)}.category-hero-image .hero-image{width:100%;height:100%;object-fit:cover}.category-hero-content{padding-top:1rem}.category-title{font-size:2rem;font-weight:700;margin-bottom:.5rem}.category-topic-count{font-size:.9rem;color:var(--text-color-muted)}.topic-list-container{margin-top:2rem}.topic-list-header{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin-bottom:1rem}.topic-list-title{margin:0;font-size:1.35rem;font-weight:800;letter-spacing:-.01em}.topic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.5rem}.topic-card-link{display:block;text-decoration:none;color:inherit}.topic-card{background:var(--background-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border-color);overflow:hidden;height:100%;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease}.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}.topic-card-image{height:190px;background:linear-gradient(135deg,#f3f4f6,#e5e7eb);overflow:hidden}.topic-image{width:100%;height:100%;object-fit:cover}.topic-card-content{display:flex;flex-direction:column;padding:1rem 1.1rem;gap:.5rem;flex:1}.topic-title{margin:0;font-size:1.15rem;font-weight:700;line-height:1.35}.topic-description{margin:.1rem 0 .35rem;color:var(--text-color-secondary);font-size:.95rem;line-height:1.5;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}.topic-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;gap:.75rem}.topic-duration{background:var(--background-color-secondary);border:1px solid var(--border-color);border-radius:999px;padding:.35rem .6rem;font-size:.85rem;font-weight:700}.topic-origin{color:var(--text-color-muted);font-size:.9rem}.no-topics{border:1px dashed var(--border-color);border-radius:var(--radius-md);padding:1.25rem;text-align:center;color:var(--text-color-secondary);background:var(--background-color-secondary)}.no-topics h2{margin:0 0 .25rem;font-size:1.1rem}.no-topics p{margin:0;font-size:.95rem;color:var(--text-color-muted)}@media (max-width: 768px){.category-list-container{padding:1rem 0}.category-list-title{font-size:1.9rem}.category-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.25rem}.category-card-content{padding:1rem 1rem .85rem}.category-card .category-title{font-size:1.1rem}.topic-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.1rem}.topic-card-image{height:160px}}@media (max-width: 480px){.category-grid,.topic-grid{grid-template-columns:1fr;gap:1rem}.category-list-title{font-size:1.7rem}.category-card-image{height:160px}}