.course-page{--dp-ink:#151a22;--dp-muted:#5f6776;--dp-muted-light:#8b93a2;--dp-pill:#e9e9f2;--dp-pill-ink:#4a5264;--dp-line:#cdd1d8;--dp-hairline:#e3e5ea;--dp-hover:#f5f5f8;background:var(--background,#fff);flex-direction:column;min-height:100%;padding-bottom:1.5rem;display:flex;position:relative}.course-tabs{background:var(--background,#fff);padding:0 17px;display:flex;position:relative}.course-tabs:after{content:"";background:var(--dp-line);height:1px;position:absolute;bottom:0;left:17px;right:17px}.course-tab-btn{color:var(--dp-muted-light);text-align:center;cursor:pointer;background:0 0;border:none;flex:1;padding:20px 4px 8px;font-family:inherit;font-size:.9rem;font-weight:600;transition:color .15s;position:relative}.course-tab-btn:hover{color:var(--dp-muted)}.course-tab-btn--active{color:var(--dp-ink);font-weight:700}.course-tab-btn--active:after{content:"";background:var(--dp-ink);z-index:1;border-radius:2px;height:3px;position:absolute;bottom:-1px;left:0;right:0}.course-sections-list{flex-direction:column;display:flex}.course-section-item{color:inherit;cursor:pointer;align-items:center;gap:12px;padding:16px 18px;text-decoration:none;transition:background .15s;display:flex}.course-section-item:hover{background:var(--dp-hover)}.course-section-info{text-align:start;flex-direction:column;flex:1;gap:3px;min-width:0;display:flex}.course-section-title{color:var(--dp-ink);margin:0;font-size:.97rem;font-weight:700;line-height:1.45}.course-section-desc{color:var(--dp-muted);margin:0;font-size:.78rem;font-weight:500;line-height:1.5}.course-section-meta{flex:none;align-items:center;gap:12px;display:flex}.course-badge-group{flex-direction:column;align-items:center;gap:4px;display:flex}.course-badge-pill{white-space:nowrap;align-items:center;gap:6px;font-size:.75rem;font-weight:600;line-height:1;display:inline-flex}.course-badge-pill [class^=icon-],.course-badge-pill [class*=\ icon-]{font-size:.95rem;line-height:1}.course-badge-pill--subtle{background:var(--dp-pill);height:25px;color:var(--dp-pill-ink);border-radius:999px;padding:0 11px}.course-badge-pill--subtle [class^=icon-],.course-badge-pill--subtle [class*=\ icon-]{color:#7c8496}.course-badge-pill--stat{color:#6b7280;padding:0 4px}.course-badge-pill--stat [class^=icon-],.course-badge-pill--stat [class*=\ icon-]{color:#8b93a2}.course-badge-pill--highlight{color:#fff;background:linear-gradient(90deg,#0560e8 0%,#19488f 100%);border-radius:999px;height:30px;padding:0 13px;box-shadow:0 6px 14px #0560e847}.course-badge-pill--highlight [class^=icon-],.course-badge-pill--highlight [class*=\ icon-]{color:#fff}.course-section-chevron{color:#344879;flex:none;justify-content:center;align-items:center;font-size:1.15rem;display:inline-flex}.course-empty{text-align:center;color:var(--dp-muted);padding:2.5rem 1rem;font-size:.9rem}.course-reviews{flex-direction:column;gap:1.25rem;padding:1.25rem;display:flex}.course-reviews__text{text-align:center;color:var(--dp-muted);padding:2.5rem 1rem;font-size:.9rem}.course-reviews__item{background:var(--dp-hover);border:1px solid var(--dp-hairline);border-radius:.85rem;flex-direction:column;gap:.5rem;padding:1rem;display:flex}.course-reviews__header{justify-content:space-between;align-items:center;display:flex}.course-reviews__author{color:var(--dp-ink);font-size:.95rem;font-weight:700}.course-reviews__date{color:var(--dp-muted-light);font-size:.8rem}.course-toast{color:#fff;z-index:1000;background:#0f172a;border-radius:2rem;padding:.6rem 1.25rem;font-size:.9rem;font-weight:600;animation:2.5s forwards fadeInOut;position:fixed;top:1.5rem;left:50%;transform:translate(-50%);box-shadow:0 6px 20px #00000040}@keyframes fadeInOut{0%{opacity:0;transform:translate(-50%,-10px)}15%{opacity:1;transform:translate(-50%)}85%{opacity:1;transform:translate(-50%)}to{opacity:0;transform:translate(-50%,-10px)}}.course-audio-handler-bar{bottom:calc(4.75rem + env(safe-area-inset-bottom,0px));max-width:var(--mobile-width,480px);z-index:90;pointer-events:none;margin:0 auto;padding:0 .75rem .25rem;position:fixed;left:0;right:0}.course-audio-handler-bar>*{pointer-events:auto}[data-theme=dark] .course-page,.dark .course-page{--dp-ink:#f8fafc;--dp-muted:#94a3b8;--dp-muted-light:#64748b;--dp-pill:#1e293b;--dp-pill-ink:#cbd5e1;--dp-line:#ffffff1f;--dp-hairline:#ffffff14;--dp-hover:#ffffff0a}[data-theme=dark] .course-tabs,.dark .course-tabs{background:var(--background,#0f172a)}[data-theme=dark] .course-badge-pill--stat,.dark .course-badge-pill--stat{color:#cbd5e1}[data-theme=dark] .course-section-chevron,.dark .course-section-chevron{color:#93c5fd}