/* Shared surfaces match the course progress card; checkout handlers stay unchanged. */
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar){--cs-surface:#1b1032;--cs-inset:#24163e;--cs-text:#faf6ff;--cs-muted:#c6bbd8;--cs-accent:#ffd000;--cs-ink:#241630;--cs-border:#493b5c}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase,
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-information{background:var(--cs-surface);border:1px solid var(--cs-border);border-radius:20px;padding:22px;margin-bottom:20px;color:var(--cs-text);min-width:0}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-sidebar-heading{display:block;margin:0 0 20px;padding:0 0 16px;border:0;border-bottom:1px solid var(--cs-border);color:var(--cs-text);font-size:16px;font-weight:800;line-height:1.9;text-align:start}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .price-box{display:flex;flex-direction:column;align-items:flex-start;gap:14px;background:var(--cs-inset);border:1px solid var(--cs-border);border-radius:14px;padding:18px;margin:0 0 18px;line-height:1.8;color:var(--cs-muted)}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .price-box::before,
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .price-box::after{display:none}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .price-box>label{width:auto;max-width:none;border:0;padding:0;margin:0;color:var(--cs-muted);font-size:12px}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .discount-percent{display:inline-block;background:var(--cs-accent);color:var(--cs-ink);border-radius:8px;padding:5px 10px;margin:0;font-size:12px;font-weight:700;line-height:1.8}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .price{display:flex;flex-direction:column;gap:6px;text-align:start;width:100%;margin:0}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .sale-price{position:static;color:var(--cs-muted);font-size:14px;text-decoration:line-through;text-decoration-thickness:1px}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .sale-price::after{display:none}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .sale-price-with-discount{position:static;display:flex;align-items:baseline;flex-wrap:wrap;gap:6px;color:var(--cs-accent);font-size:28px;font-weight:900;line-height:1.6;overflow-wrap:anywhere}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .currency{float:none;margin:0;color:var(--cs-muted);font-size:12px;font-weight:500}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .buy-state{color:var(--cs-accent);text-align:start;font-weight:800;font-size:24px}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .go-pay{display:flex;align-items:center;justify-content:center;gap:10px;position:relative;z-index:auto;width:100%;height:auto;min-height:52px;padding:12px 16px;border:1px solid var(--cs-accent);border-radius:12px;background:var(--cs-accent);color:var(--cs-ink);font-size:16px;font-weight:800;line-height:1.8;text-decoration:none;transition:filter .2s ease}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .go-pay::before{position:static;flex-shrink:0;width:auto;height:auto;line-height:inherit}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .go-pay:hover{filter:brightness(1.08)}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .go-pay:focus-visible{outline:3px solid var(--cs-text);outline-offset:4px}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .main-rate{width:100%;margin:22px 0 0;border-top:1px solid var(--cs-border);padding-top:16px;display:flex;flex-direction:column;align-items:center;gap:8px}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .rate-label{color:var(--cs-muted);font-size:12px;line-height:2;margin:0;font-weight:400}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-information>span{display:flex;align-items:center;gap:12px;padding:13px 0;border:0;border-bottom:1px solid var(--cs-border);color:var(--cs-muted);font-size:13px;line-height:1.9;overflow-wrap:anywhere}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-information>span:last-child{border-bottom:0;padding-bottom:0}
:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-information>span>i{display:flex;align-items:center;justify-content:center;flex:0 0 32px;width:32px;height:32px;margin:0;border-radius:10px;background:var(--cs-inset);color:var(--cs-accent);font-size:15px;text-align:center}
@media(max-width:400px){:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase,:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-information{padding:18px}:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .sale-price-with-discount{font-size:25px}}
@media(prefers-reduced-motion:reduce){:is(#academy-course-detail, #academy-chapter-detail) :is(#course-sidebar, #chapter-sidebar) .academy-course-purchase .go-pay{transition:none}}