.lectures-main { position: relative; z-index: 1; max-width: 1200px; margin: auto; padding: 140px 24px 48px; }
.lectures-page .site-header .cta-btn { color: #171512; }
.lectures-page .nav-link[aria-current="page"] { color: var(--gold); }
.lectures-intro { max-width: 760px; margin-bottom: 64px; }
.eyebrow { color: var(--gold-light); font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; }
.lectures-intro h1 { font-size: clamp(2.5rem, 6vw, 4rem); margin: 14px 0; }
.lectures-intro > p:last-of-type, .section-description { color: var(--text-secondary); line-height: 1.7; }
.lecture-tabs { display: inline-flex; gap: 6px; max-width: 100%; padding: 6px; margin-top: 28px; border: 1px solid var(--border-default); border-radius: 12px; background: var(--bg-secondary); }
.lecture-tabs button { padding: 12px 20px; min-height: 44px; border: 0; border-radius: 8px; background: transparent; color: var(--text-secondary); font: inherit; font-weight: 600; cursor: pointer; }
.lecture-tabs button[aria-selected="true"] { background: var(--gold-light); color: #171512; }
.lectures-footer a { padding: 12px 18px; border: 1px solid var(--border-default); border-radius: 8px; color: var(--text-primary); text-decoration: none; }
.lectures-main section[hidden] { display: none; }
.lectures-main section { margin-bottom: 72px; scroll-margin-top: 110px; }
.lectures-main h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 12px; }
.lecture-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 24px; margin-top: 24px; }
.lecture-card { display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--border-default); border-radius: 16px; background: var(--bg-card); color: var(--text-primary); text-align: left; text-decoration: none; font: inherit; cursor: pointer; transition: transform .2s, border-color .2s; }
.lecture-card:hover { transform: translateY(-3px); border-color: var(--gold); }
.lecture-card-media { position: relative; aspect-ratio: 16/9; display: grid; place-items: center; background: var(--bg-elevated); overflow: hidden; }
.lecture-card-media img { width: 100%; height: 100%; object-fit: cover; }
.lecture-card-media > span { position: absolute; bottom: 12px; left: 12px; background: #171512; color: #fff; padding: 6px 10px; border-radius: 6px; font-size: .75rem; }
.lecture-card-copy { padding: 22px; }
.lecture-card h3 { font-size: 1.05rem; line-height: 1.5; margin: 0 0 10px; overflow-wrap: anywhere; }
.lecture-card p { color: var(--text-secondary); font-size: .88rem; line-height: 1.6; margin: 0 0 12px; }
.lecture-card small { color: var(--text-secondary); }
.lecture-search { display: block; max-width: 480px; margin-top: 24px; color: var(--text-secondary); font-size: .9rem; }
.lecture-search input { width: 100%; margin-top: 8px; padding: 13px 16px; border-radius: 8px; border: 1px solid var(--border-default); background: var(--bg-secondary); color: var(--text-primary); font: inherit; }
[role="status"] { color: var(--text-secondary); margin-top: 20px; }
[role="status"] button { padding: 10px 14px; border: 1px solid var(--border-default); border-radius: 8px; background: var(--bg-elevated); color: var(--text-primary); font: inherit; cursor: pointer; }
.lectures-footer { display: flex; gap: 16px; flex-wrap: wrap; padding-top: 24px; border-top: 1px solid var(--border-default); }
.sample-player { width: min(1100px, 94vw); max-height: 94dvh; margin: auto; padding: 0; border: 1px solid var(--border-default); border-radius: 16px; color: var(--text-primary); background: var(--bg-card); }
.sample-player::backdrop { background: rgba(0,0,0,.8); }
.player-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px; }
.player-heading h2 { font-size: 1.15rem; }
.player-heading button { width: 44px; height: 44px; flex: none; border: 1px solid var(--border-default); border-radius: 8px; background: var(--bg-elevated); color: var(--text-primary); font-size: 26px; cursor: pointer; }
#player-stage { aspect-ratio: 16/9; background: #000; }
#player-stage iframe { width: 100%; height: 100%; border: 0; }
body:has(.sample-player[open]) { overflow: hidden; }
.subscribe-preview { width: min(780px, calc(100vw - 32px)); max-height: calc(100dvh - 48px); overflow: auto; scrollbar-width: thin; scrollbar-color: var(--border-default) var(--bg-card); }
.subscribe-preview[open] { display: grid; grid-template-columns: .9fr 1.1fr; }
.subscribe-preview > .player-heading { grid-column: 1 / -1; padding: 18px 24px; border-bottom: 1px solid var(--border-default); }
.subscribe-preview .player-heading h2 { font-size: 1.1rem; }
.subscribe-preview-media { position: relative; align-self: start; aspect-ratio: 16/9; overflow: hidden; margin: 24px 0 24px 24px; border-radius: 10px; background: var(--bg-elevated); border: 1px solid var(--border-default); }
.subscribe-preview-media img { display: block; width: 100%; height: 100%; object-fit: contain; }
.subscribe-preview-media img[hidden] { display: none; }
.subscribe-preview-lock { position: absolute; bottom: 10px; left: 10px; display: flex; align-items: center; gap: 7px; padding: 6px 9px; border-radius: 6px; color: #fff; background: rgba(0,0,0,.82); font-size: .7rem; font-weight: 600; }
.subscribe-preview-lock i { font-size: 11px; }
.subscribe-preview-copy { min-width: 0; padding: 24px; }
.subscribe-preview-copy .eyebrow { font-size: .68rem; letter-spacing: .1em; }
.subscribe-preview-copy h3 { margin: 10px 0; font-size: 1.2rem; line-height: 1.4; overflow-wrap: anywhere; }
.subscribe-preview-copy p:not(.eyebrow) { margin-bottom: 14px; color: var(--text-secondary); font-size: .85rem; line-height: 1.55; }
.subscribe-preview-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.subscribe-preview-actions a, .subscribe-preview-actions button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 11px 14px; border: 1px solid var(--border-default); border-radius: 8px; color: var(--text-primary); background: var(--bg-elevated); text-decoration: none; font: inherit; font-size: .8rem; cursor: pointer; }
.subscribe-preview-actions a { color: #171512; background: var(--gold-light); border-color: var(--gold-light); font-weight: 600; }
@media (max-width: 560px) {
  .subscribe-preview[open] { grid-template-columns: 1fr; }
  .subscribe-preview > .player-heading { padding: 14px 18px; }
  .subscribe-preview-media { margin: 18px 18px 0; max-height: 150px; aspect-ratio: auto; height: 150px; }
  .subscribe-preview-copy { padding: 18px; }
  .subscribe-preview-actions > * { flex: 1; }
}
.lectures-page :is(a,button,input):focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; }
/* Shared viewer finish and viewport-bounded free player. */
.sample-player { border-radius: 20px; border-color: color-mix(in srgb, var(--gold) 32%, var(--border-default)); background: linear-gradient(145deg, color-mix(in srgb, var(--bg-card) 96%, var(--gold) 4%), var(--bg-card)); box-shadow: 0 32px 100px rgba(0,0,0,.5); }
.sample-player::backdrop { background: rgba(0,0,0,.78); backdrop-filter: blur(10px); }
#sample-player { width: min(1180px, calc(100vw - 32px), calc((100dvh - 160px) * 16 / 9)); max-height: calc(100dvh - 24px); overflow: hidden; }
.sample-player .player-heading { padding: 18px 22px; border-bottom: 1px solid var(--border-default); }
.viewer-heading { display: flex; align-items: center; gap: 14px; min-width: 0; }
.viewer-mark { width: 40px; height: 40px; flex: none; display: grid; place-items: center; border: 1px solid color-mix(in srgb,var(--gold) 40%,transparent); border-radius: 12px; color: var(--gold); background: color-mix(in srgb,var(--gold) 10%,transparent); font-size: 14px; }
.viewer-heading-text { min-width: 0; }
.viewer-eyebrow { margin: 0 0 5px; color: var(--gold); font-size: .6rem; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.sample-player .player-heading h2 { font-size: 1.05rem; line-height: 1.4; font-weight: 650; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; }
.sample-player .player-heading button { width: 36px; height: 36px; border-radius: 50%; font-size: 22px; background: transparent; color: var(--text-secondary); }
.sample-player .player-heading button:hover { color: var(--text-primary); background: var(--bg-elevated); border-color: var(--gold); }
.viewer-stage-frame { padding: 12px 14px 0; }
#player-stage { border-radius: 10px; overflow: hidden; }
#player-stage iframe { display: block; }
.viewer-footer { min-height: 42px; padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--text-secondary); font-size: .65rem; }
.viewer-footer i { color: var(--gold); margin-right: 6px; }
.viewer-footer > span:last-child { color: var(--gold); white-space: nowrap; }
.subscribe-preview { width: min(840px, calc(100vw - 32px)); }
.subscribe-preview[open] { grid-template-columns: 1fr 1fr; }
.subscribe-preview-media { margin: 30px 0 30px 28px; border-radius: 14px; box-shadow: 0 12px 28px rgba(0,0,0,.18); }
.subscribe-preview-copy { padding: 30px 28px; }
.subscribe-preview-copy h3 { font-size: 1.4rem; margin: 12px 0; letter-spacing: -.02em; }
.subscribe-preview-copy p:not(.eyebrow) { font-size: .85rem; }
.subscribe-preview-actions { padding-top: 20px; border-top: 1px solid var(--border-default); }
.subscribe-preview-actions a { background: linear-gradient(135deg, #c9a55c, #e2c17c); box-shadow: 0 5px 18px rgba(201,165,92,.12); }
.subscribe-preview-actions button { background: transparent; }
.subscribe-preview-actions a.download-app-action { color: var(--text-primary); background: transparent; border-color: var(--border-default); box-shadow: none; font-weight: 500; }
.subscribe-preview-actions a.download-app-action:hover { background: var(--bg-elevated); border-color: var(--gold); }
.subscribe-preview-actions a.download-app-action { color: var(--text-primary); background: transparent; border-color: var(--border-default); box-shadow: none; font-weight: 500; }
.subscribe-preview-actions a.download-app-action:hover { background: var(--bg-elevated); border-color: var(--gold); }
@media (max-width: 560px) {
  .subscribe-preview[open] { grid-template-columns: 1fr; }
  .subscribe-preview-media { margin: 18px 18px 0; height: 140px; }
  .subscribe-preview-copy { padding: 20px; }
  .sample-player .player-heading { padding: 14px 16px; }
  .viewer-heading { gap: 10px; }
  .viewer-mark { width: 32px; height: 32px; border-radius: 9px; }
  .viewer-footer { font-size: .6rem; padding-inline: 14px; }
}
@media (max-height: 480px) {
  #sample-player { width: min(1180px, calc(100vw - 24px), calc((100dvh - 100px) * 16 / 9)); }
  #sample-player .player-heading { padding: 8px 12px; }
  #sample-player .viewer-eyebrow, #sample-player .viewer-mark, #sample-player .viewer-footer { display: none; }
  #sample-player .viewer-stage-frame { padding: 8px; }
}
@media (max-width: 1000px) { .lecture-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } }
@media (max-width: 600px) { .lecture-grid { grid-template-columns: 1fr; gap: 18px; } .lectures-main { padding: 104px 16px 32px; } .lectures-intro { margin-bottom: 44px; } }
@media (prefers-color-scheme: light) {
  .lectures-page { --bg-primary:#f8f7f4; --bg-secondary:#fff; --bg-card:#fff; --bg-elevated:#f1eee7; --text-primary:#171512; --text-secondary:#58534c; --border-default:#d9d3c9; --border-subtle:#e6e0d6; --gold:#806326; --gold-light:#e2c17c; background-color:var(--bg-primary); color:var(--text-primary); }
  .lectures-page .site-header { background:rgba(248,247,244,.95); }
  .lectures-page .site-header .logo { filter: brightness(0); }
  .lectures-page .eyebrow { color:#806326; }
}
@media (prefers-reduced-motion: reduce) { .lecture-card { transition:none; } }