.lecture-video-card{margin:0 0 54px;border:1px solid #d9d8d1;background:#fff;border-radius:20px;overflow:hidden;scroll-margin-top:90px}.video-heading{padding:30px 32px 18px}.video-heading>p:first-child{font-size:12px;letter-spacing:.14em;color:#49798a;font-weight:700}.video-heading h2{font-size:clamp(26px,4vw,42px);line-height:1.15;margin:10px 0}.video-heading p{max-width:800px;color:#506169;line-height:1.65}#lecture-video-player{display:block;width:100%;aspect-ratio:16/9;background:#101215}.video-help,.video-credit,#video-status{margin:18px 32px;line-height:1.6}.video-help{font-weight:600}.video-credit{font-size:12px;color:#69777c}#video-chapters{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:0 32px}#video-chapters button{text-align:left;background:#f4f5f2;border:1px solid #dae1dc;border-radius:9px;padding:13px;cursor:pointer;color:#243840;font:inherit;font-size:14px}#video-chapters button[aria-current=true]{border-color:#327c96;background:#eaf4f7}#video-chapters small{display:block;color:#65787e;margin-bottom:5px;font-variant-numeric:tabular-nums}.video-downloads{display:flex;gap:12px 22px;flex-wrap:wrap;margin:22px 32px}.video-downloads a{color:#246b83;font-size:14px}@media(max-width:650px){.video-heading{padding:20px}#video-chapters{grid-template-columns:repeat(2,1fr);padding:0 18px}.video-help,.video-credit,#video-status,.video-downloads{margin-left:18px;margin-right:18px}}
.lecture-video-card{width:calc(100% - 40px);max-width:1280px;margin:0 auto 54px;color:#20292d}.lecture-video-card .video-heading{display:block;max-width:none;margin:0;align-items:initial;justify-content:initial}.lecture-video-card .video-heading h2{color:#20313a;letter-spacing:-.025em}.lecture-video-card .video-heading p{font-size:16px;font-weight:400;letter-spacing:normal}.lecture-video-card .video-heading>p:first-child{font-size:12px;font-weight:700;letter-spacing:.14em}.lecture-video-card .video-help{color:#34464e}@media(max-width:650px){.lecture-video-card{width:calc(100% - 20px)}}