/* Concrete course page: hero card + left section menu + one content card. */
.course-reference-page { padding-top: 28px; background: #f7f7f7; }
.course-reference-hero { position: relative; display: grid; grid-template-columns: minmax(0, .96fr) minmax(380px, 1.04fr); min-height: 424px; overflow: hidden; border-radius: 34px; background: var(--surface, #fff); }
.course-reference-hero-copy { display: flex; flex-direction: column; align-items: flex-start; padding: 40px 40px 38px; }
.course-reference-discount { display: inline-flex; align-items: center; min-height: 31px; padding: 7px 13px; border-radius: 999px; background: #ff6840; color: #fff; font-size: .72rem; font-weight: 800; }
.course-reference-hero h1 { max-width: 580px; margin: 21px 0 10px; font-family: Inter, ui-sans-serif, system-ui, sans-serif; font-size: clamp(2rem, 3.5vw, 3.35rem); font-weight: 750; letter-spacing: -.045em; line-height: .98; }
.course-reference-lead { max-width: 585px; margin: 0; color: var(--ink); font-size: .96rem; line-height: 1.6; }
.course-reference-metrics { display: flex; align-items: end; justify-content: space-between; gap: 25px; width: min(100%, 590px); margin-top: auto; padding-top: 24px; }
.course-reference-metrics > div { display: grid; gap: 3px; }
.course-reference-metrics > div > span { color: var(--ink); font-size: .76rem; }
.course-reference-metrics strong { font-size: 1.36rem; line-height: 1; }
.course-reference-metrics del { margin-left: 6px; color: var(--muted); font-size: .74rem; }
.course-reference-rating { justify-items: end; }
.course-reference-rating > strong { display: inline; margin-right: 4px; }
.course-reference-stars { display: inline-flex; gap: 1px; color: var(--line); font-size: 1rem; }
.course-reference-stars .review-star { position: relative; font-style: normal; color: var(--line); }
.course-reference-stars .review-star.is-full { color: var(--rose); }
.course-reference-stars .review-star.is-half::before { content: '★'; position: absolute; inset: 0 auto 0 0; width: 50%; overflow: hidden; color: var(--rose); }
.course-reference-buy { margin: 18px 0 0; }
.course-reference-buy .button { min-width: 292px; min-height: 60px; border-radius: 14px; }
.course-reference-hero-media { min-height: 424px; background: linear-gradient(120deg, #f4f3f2, #dedbd8); }
.course-reference-hero-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
.course-reference-hero-media > span { display: grid; place-items: center; height: 100%; color: var(--rose-dark); font-size: 1.2rem; font-weight: 800; letter-spacing: .15em; }
.course-reference-favorite { position: absolute; z-index: 1; left: calc(50% - 25px); top: 40px; }
.course-reference-favorite .pn-favorite-detail { margin: 0; }
.course-reference-favorite .pn-favorite-detail button { display: grid; place-items: center; width: 50px; min-width: 50px; height: 50px; min-height: 50px; padding: 0; border: 0; border-radius: 50%; background: color-mix(in srgb, var(--paper) 88%, transparent); }
.course-reference-favorite .pn-favorite-detail button span { display: none; }
.course-reference-favorite .pn-favorite-detail .pn-icon { width: 23px; height: 23px; }
.course-reference-layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 20px; align-items: start; margin-top: 40px; }
.course-reference-sidebar { position: sticky; top: 96px; display: grid; gap: 5px; padding: 20px; border-radius: 28px; background: var(--surface, #fff); }
.course-reference-sidebar a { display: flex; align-items: center; gap: 15px; min-height: 58px; color: var(--ink); font-size: .95rem; font-weight: 700; }
.course-reference-sidebar a > span { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--soft); color: var(--ink); font-size: .7rem; font-weight: 800; }
.course-reference-sidebar a:hover { color: var(--rose-dark); }
.course-reference-sidebar a:hover > span { background: var(--rose); color: #fff; }
.course-reference-content { min-width: 0; padding: 39px 40px; border-radius: 30px; background: var(--surface, #fff); }
.course-reference-section { padding: 0 0 64px; margin: 0 0 59px; border-bottom: 1px solid var(--line); scroll-margin-top: 100px; }
.course-reference-section h2 { margin: 0 0 27px; font-family: Inter, ui-sans-serif, system-ui, sans-serif; font-size: clamp(2rem, 3.4vw, 3.25rem); font-weight: 750; letter-spacing: -.045em; line-height: 1; }
.course-reference-section .safe-rich-text { max-width: 960px; color: var(--ink); font-size: 1rem; line-height: 1.62; }
.course-reference-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 17px; margin-top: 36px; }
.course-reference-facts article { display: flex; align-items: center; gap: 16px; min-height: 112px; padding: 18px; border-radius: 18px; background: var(--soft); }
.course-reference-facts article > span { display: grid; place-items: center; flex: 0 0 50px; width: 50px; height: 50px; border-radius: 50%; background: var(--surface, #fff); color: var(--rose-dark); font-family: Georgia, serif; font-size: 1.15rem; font-weight: 700; }
.course-reference-facts h3 { margin: 0 0 6px; font-size: 1rem; }
.course-reference-facts p { margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.45; }
.course-reference-topics { display: grid; gap: 0; }
.course-reference-topics article { padding: 23px 0; border-top: 1px solid var(--line); }
.course-reference-topics article:last-child { border-bottom: 1px solid var(--line); }
.course-reference-topics article > span { color: var(--rose-dark); font-size: .78rem; font-weight: 800; text-transform: uppercase; }
.course-reference-topics h3 { margin: 7px 0; font-size: 1.18rem; line-height: 1.3; }
.course-reference-topics p { margin: 0; color: var(--muted); line-height: 1.57; white-space: pre-line; }
.course-reference-empty { margin: 0; padding: 23px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); color: var(--muted); }
.course-reference-related-list { display: grid; grid-template-columns: repeat(4, minmax(220px, 1fr)); gap: 16px; overflow-x: auto; padding-bottom: 8px; }
.course-reference-related-list .product-card { min-width: 220px; border-radius: 18px; }
.course-reference-related-list .product-card-body { padding: 18px; }
.course-reference-related-list .product-card h2 { font-size: 1.3rem; }
.course-reference-related-list .product-card-footer { align-items: flex-start; flex-direction: column; }
.course-reference-promo .protected-video { max-width: 900px; margin: 0; border-radius: 18px; }
.course-reference-experts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 17px; }
.course-reference-experts article { overflow: hidden; border-radius: 18px; background: var(--soft); }
.course-reference-experts img { display: block; width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.course-reference-experts article > div { padding: 18px; }
.course-reference-experts h3 { margin: 0 0 6px; font-size: 1.07rem; }
.course-reference-experts p { margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.45; }
.course-reference-final-buy { display: flex; justify-content: center; padding-top: 3px; }
.course-reference-final-buy .button { min-width: 260px; }
.theme-dark-premium .course-reference-hero-media { background: linear-gradient(130deg, #2b1f23, #5c3341); }
.theme-dark-premium .course-reference-page { background: var(--paper); }

@media (max-width: 900px) {
    .course-reference-hero { grid-template-columns: 1fr; }
    .course-reference-hero-media { min-height: 330px; order: -1; }
    .course-reference-hero-copy { padding: 30px; }
    .course-reference-favorite { left: auto; right: 20px; top: 20px; }
    .course-reference-layout { grid-template-columns: 1fr; }
    .course-reference-sidebar { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); border-radius: 22px; }
}

@media (max-width: 620px) {
    .course-reference-page { padding-top: 20px; }
    .course-reference-hero { border-radius: 22px; }
    .course-reference-hero-copy { padding: 25px 21px; }
    .course-reference-hero h1 { font-size: 2.25rem; }
    .course-reference-metrics { align-items: start; flex-direction: column; gap: 13px; }
    .course-reference-rating { justify-items: start; }
    .course-reference-buy, .course-reference-buy .button { width: 100%; }
    .course-reference-sidebar { grid-template-columns: 1fr; padding: 14px; }
    .course-reference-content { padding: 29px 22px; border-radius: 22px; }
    .course-reference-section { padding-bottom: 43px; margin-bottom: 39px; }
    .course-reference-facts, .course-reference-experts { grid-template-columns: 1fr; }
    .course-reference-related-list { grid-template-columns: repeat(4, minmax(245px, 76vw)); }
}