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#0f172a33;transform:translateY(-1px)}.cancel-subscription-button:hover{background:#dc2626;border-color:#dc2626}.plan-upgrade{background:linear-gradient(135deg,#f8fafc,#e0f2fe);border:1px solid #e0f2fe;border-radius:12px;padding:20px;margin-top:16px;text-align:center}.upgrade-content{margin-bottom:16px}.upgrade-content h4{font-size:var(--settings-text-subheading);font-weight:var(--settings-weight-bold);color:#1d1d1f;margin:0 0 8px;letter-spacing:0}.upgrade-content p{margin:0 0 12px;color:#6b7280;font-size:var(--settings-text-body);line-height:1.5}.upgrade-features{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px}.upgrade-features li{font-size:var(--settings-text-action);color:#059669;font-weight:var(--settings-weight-medium);text-align:left;padding-left:4px}.plan-upgrade p{margin:0 0 12px;color:#6b7280;font-size:var(--settings-text-body)}.settings-upgrade-button{background:#111827;color:#fff;border:1px solid #111827;padding:10px 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.plan-value,html[data-theme=dark] .plan-value.active{color:#f5f5f5}html[data-theme=dark] .plan-value.canceled,html[data-theme=dark] .plan-value.free{color:#a1a1aa}html[data-theme=dark] .plan-value.unlimited:before{color:#f5f5f5}html[data-theme=dark] .renew-subscription-button{background:#141414;color:#e5e5e5;border-color:#2a2a2a}html[data-theme=dark] .renew-subscription-button:hover{background:#181818;color:#fff;border-color:#343437;box-shadow:none}html[data-theme=dark] .cancel-subscription-button{background:#ef4444;border-color:#ef4444;color:#fff}html[data-theme=dark] .plan-upgrade{background:linear-gradient(135deg,#1b1b1b,#141414);border-color:#262626}html[data-theme=dark] .upgrade-content h4{color:#f5f5f5}html[data-theme=dark] .upgrade-content p,html[data-theme=dark] .plan-upgrade p{color:#9ca3af}html[data-theme=dark] .upgrade-features li{color:#d4d4d8}html[data-theme=dark] 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2.35rem;position:relative;min-height:40px;display:flex;align-items:center;justify-content:center}.course-detail-header__meta{display:flex;flex-direction:column;align-items:center;text-align:center;max-width:min(100%,820px)}.course-detail-header__title{margin:0}.course-detail-header__back-btn{position:absolute;left:0;top:50%;transform:translateY(-50%);width:40px;height:40px;border-radius:12px;border:1px solid #e5e7eb;background:#fff;color:#6b7280;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:none;transition:background-color .18s ease,border-color .18s ease,color .18s ease}.course-detail-header__back-btn:hover{background:#f9fafb;border-color:#d1d5db;color:#374151}.course-detail-header__back-btn:focus-visible{outline:none;box-shadow:0 0 0 3px #0f172a26}.course-detail-header__back-icon{width:18px;height:18px}.course-detail-header__subtitle{margin:8px 0 0;font-size:13px;line-height:1.25;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:#6b7280}html[data-theme=dark] .course-detail-header__back-btn{border-color:#2d2d33;background:#151517;color:#f4f4f5}html[data-theme=dark] .course-detail-header__back-btn:hover{border-color:#3a3a42;background:#1b1b1f}html[data-theme=dark] .course-detail-header__back-btn:focus-visible{box-shadow:0 0 0 3px #ffffff24}html[data-theme=dark] .course-detail-header__subtitle{color:#a1a1aa}@media (max-width: 640px){.course-detail-header{margin-bottom:1.7rem}}.course-detail-layout{width:100%}:is(.course-welcome-wrap,.course-cta-wrap,.course-description-wrap,.course-chapters-wrap,.cta-footer-wrap){width:100%;max-width:1200px;margin-left:auto;margin-right:auto}body.course-detail-page{--course-detail-surface: #fdfdfd}html[data-theme=dark] body.course-detail-page{--course-detail-surface: #1d1d1d}body.course-detail-page,body.course-detail-page #root,body.course-detail-page .app,body.course-detail-page 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0;padding:0;padding-top:.78rem;list-style:none;border-top:1px solid #dbe3ee;display:grid;gap:.56rem}.course-refund-card__item{margin:0;display:grid;grid-template-columns:auto minmax(0,1fr);gap:.5rem;align-items:start;color:#3f4754;font-size:.92rem;line-height:1.56;text-align:justify;text-align-last:center;text-justify:inter-word;-webkit-hyphens:auto;hyphens:auto}.course-refund-card__item:before{content:"";width:7px;height:7px;border-radius:50%;margin-top:.42rem;border:1px solid #9ba7b7;background:linear-gradient(150deg,#d5dde9,#8d99ab)}@keyframes courseWelcomeReveal{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}html[data-theme=dark] .welcome-thumb,html[data-theme=dark] .welcome-video-player{border-color:#2f2f34;background:#161618}html[data-theme=dark] .video-frame{border-color:#3a3a40;background:#09090a}html[data-theme=dark] .welcome-thumb__placeholder,html[data-theme=dark] .video-placeholder{color:#a1a1aa;background:#1d1d20}html[data-theme=dark] 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