.lecture-subnav{background:#070d19;color:#cbd5e1;border-bottom:1px solid #ffffff20}.lecture-subnav>div{max-width:1180px;margin:auto;display:flex;align-items:center;gap:28px;padding:16px 24px;flex-wrap:wrap}.lecture-subnav a{font-size:14px;font-weight:700;text-decoration:none;padding:6px 0;border-bottom:2px solid transparent}.lecture-subnav a[aria-current=page]{color:#d9ff43;border-bottom-color:#d9ff43}.lecture-subnav a:hover{color:#d9ff43}.lecture-subnav a:focus-visible{outline:2px solid #d9ff43;outline-offset:4px}@media(max-width:600px){.lecture-subnav>div{gap:10px 20px;padding:14px 20px}.lecture-subnav a{font-size:13px}}