.sr-ac{--ac-bg:#0b1220;--ac-card:#111827;--ac-line:#1f2937;--ac-muted:#94a3b8;--ac-accent:#2563eb}.sr-ac-stage{background:linear-gradient(180deg,#0b1220 0,#111827 100%);color:#e2e8f0;padding:1rem 0 1.5rem}.sr-ac-bc{font-size:.8rem;color:#94a3b8;margin-bottom:.75rem;display:flex;flex-wrap:wrap;gap:6px}.sr-ac-bc a{color:#93c5fd;text-decoration:none}.sr-ac-player-wrap{border-radius:16px;overflow:hidden;background:#000;box-shadow:0 20px 50px rgba(0,0,0,.35)}.sr-ac-player__frame{position:relative;aspect-ratio:16/9}.sr-ac-player__frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.sr-ac-player__html5{width:100%;display:block;max-height:70vh;background:#000}.sr-ac-player--empty{padding:3rem 1.5rem;text-align:center;color:#94a3b8}.sr-ac-titlebar{display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:flex-start;margin-top:1.25rem}.sr-ac-title{margin:.35rem 0;font-size:clamp(1.25rem,2.5vw,1.75rem);font-weight:900;color:#fff}.sr-ac-excerpt{margin:0;color:#94a3b8;line-height:1.7;max-width:40em}.sr-ac-tags{display:flex;flex-wrap:wrap;gap:6px}.sr-ac-tag{font-size:.75rem;font-weight:700;padding:4px 10px;border-radius:999px;background:rgba(255,255,255,.08);color:#e2e8f0}.sr-ac-tag--free{background:#0d9488;color:#fff}.sr-ac-titlebar__actions{display:flex;flex-wrap:wrap;gap:8px}.sr-ac-layout{display:grid;grid-template-columns:1fr 320px;gap:1.5rem;padding:2rem 0 3rem}@media(max-width:960px){.sr-ac-layout{grid-template-columns:1fr}}.sr-ac-block{margin-bottom:1.75rem}.sr-ac-block h2{font-size:1.1rem;margin:0 0 .75rem;font-weight:800}.sr-ac-chapters{margin:0;padding-right:1.2rem;line-height:1.9;color:#334155}.sr-ac-resources{list-style:none;margin:0;padding:0}.sr-ac-resources a{color:#2563eb;font-weight:600;text-decoration:none}.sr-ac-playlist{background:#f8fafc;border:1px solid #e2e8f0;border-radius:16px;overflow:hidden;position:sticky;top:calc(var(--header-h,76px) + 12px)}.sr-ac-playlist__title{margin:0;padding:1rem 1.1rem;font-size:.95rem;border-bottom:1px solid #e2e8f0;background:#fff}.sr-ac-playlist__list{list-style:none;margin:0;padding:0;max-height:min(70vh,520px);overflow:auto}.sr-ac-playlist__list a{display:flex;gap:10px;align-items:flex-start;padding:.75rem 1rem;text-decoration:none;color:#0f172a;border-bottom:1px solid #f1f5f9}.sr-ac-playlist__list li.is-current a{background:#eff6ff}.sr-ac-playlist__num{flex-shrink:0;width:28px;height:28px;border-radius:8px;background:#e2e8f0;display:grid;place-items:center;font-size:.75rem;font-weight:800}.sr-ac-playlist__name{display:block;font-weight:700;font-size:.9rem;line-height:1.4}.sr-ac-playlist__meta{font-size:.75rem;color:#64748b}.sr-ac-playlist__now{margin-right:auto;font-size:.7rem;color:#2563eb;font-weight:800;white-space:nowrap}.sr-ac-hero{background:linear-gradient(135deg,#0b1220,#1e3a5f);color:#fff;padding:2.5rem 0 2rem;text-align:center}.sr-ac-hero h1{margin:.35rem 0;font-size:clamp(1.6rem,3vw,2.2rem);font-weight:900}.sr-ac-hero__eye{margin:0;opacity:.75;font-size:.85rem;font-weight:700;letter-spacing:.04em}.sr-ac-hero__desc{margin:.5rem auto 0;max-width:36em;color:#cbd5e1;line-height:1.75}.sr-ac-hero__actions{margin-top:1.25rem}.sr-ac-filters{display:flex;flex-wrap:wrap;gap:8px;margin:1.5rem 0 1rem}.sr-ac-filters a{padding:8px 14px;border-radius:999px;border:1px solid #e2e8f0;text-decoration:none;color:#475569;font-size:.85rem;font-weight:700;background:#fff}.sr-ac-filters a.is-active,.sr-ac-filters a:hover{background:#2563eb;color:#fff;border-color:#2563eb}.sr-ac-toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:1.25rem}.sr-ac-toolbar select{padding:8px 12px;border-radius:10px;border:1px solid #e2e8f0}.sr-ac-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1.15rem;padding-bottom:2rem}.sr-ac-card{background:#fff;border:1px solid #e2e8f0;border-radius:14px;overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}.sr-ac-card:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(15,23,42,.08)}.sr-ac-card__thumb{position:relative;aspect-ratio:16/10;background:#0f172a;display:block;overflow:hidden}.sr-ac-card__thumb img{width:100%;height:100%;object-fit:cover;display:block}.sr-ac-card__ph{position:absolute;inset:0;display:grid;place-items:center;color:#64748b;font-size:2rem}.sr-ac-card__play{position:absolute;inset-inline-start:50%;top:50%;transform:translate(-50%,-50%);width:44px;height:44px;border-radius:50%;background:rgba(37,99,235,.92);color:#fff;display:grid;place-items:center;font-size:.9rem;opacity:0;transition:opacity .2s}.sr-ac-card:hover .sr-ac-card__play{opacity:1}.sr-ac-card__badge{position:absolute;top:10px;inset-inline-start:10px;background:#0d9488;color:#fff;font-size:11px;font-weight:800;padding:3px 8px;border-radius:999px}.sr-ac-card__dur{position:absolute;bottom:10px;inset-inline-end:10px;background:rgba(0,0,0,.7);color:#fff;font-size:11px;font-weight:700;padding:3px 8px;border-radius:6px}.sr-ac-card__body{padding:.85rem 1rem 1rem;flex:1;display:flex;flex-direction:column;gap:.25rem}.sr-ac-card__ep{font-size:.75rem;color:#64748b;font-weight:700}.sr-ac-card__title{margin:0;font-size:.98rem;font-weight:800;line-height:1.4}.sr-ac-card__title a{color:inherit;text-decoration:none}.sr-ac-card__sum{margin:0;font-size:.82rem;color:#64748b;line-height:1.55}.sr-ac-card__meta{display:flex;flex-wrap:wrap;gap:8px;font-size:.75rem;color:#94a3b8;margin-top:auto;padding-top:.35rem}.sr-ac-empty{grid-column:1/-1;text-align:center;padding:3rem 1rem;color:#64748b}.sr-lesson-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1.15rem}.sr-lesson-card{composes:sr-ac-card}