/* Same markup, proportions and visitor badge as the homepage footer. */
    footer.site-footer {
      position: relative; z-index: 2; padding: 1.35rem 5% 1.55rem;
      color: #9eabc2; font-size: .76rem;
      background: transparent;
    }
    footer.site-footer .footer-inner {
      width: min(1200px, 100%); margin: 0 auto;
      display: grid; grid-template-columns: minmax(220px, 1fr) auto minmax(220px, 1fr); align-items: center; gap: 1.5rem;
    }
    footer.site-footer .footer-brand { justify-self: start; display: inline-flex; align-items: center; gap: .65rem; color: #f8fafc; text-decoration: none; }
    footer.site-footer .footer-mark { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid rgba(94,234,212,.4); border-radius: 50%; font-family: 'Fira Code', monospace; font-size: .7rem; font-weight: 800; color: #5eead4; box-shadow: inset 0 0 18px rgba(94,234,212,.1); }
    footer.site-footer .footer-brand-copy { display: grid; gap: .08rem; }
    footer.site-footer .footer-brand-copy strong { font-size: .82rem; }
    footer.site-footer .footer-brand-copy span { color: #8795af; font-size: .65rem; }
    footer.site-footer .footer-copy { text-align: center; line-height: 1.6; }
    footer.site-footer .footer-copy p { margin: 0; }
    footer.site-footer .footer-space-credit { display: inline-block; margin-top: .15rem; color: #77859f; font-family: 'Fira Code', monospace; font-size: .58rem; text-decoration: none; }
    footer.site-footer .footer-space-credit:hover { color: #fbbf24; }
    footer.site-footer .footer-signal { justify-self: end; }
    footer.site-footer a { color: #5eead4; text-underline-offset: 2px; }
    html[data-theme="light"] footer.site-footer { color: #e8fbff; background: transparent; text-shadow: 0 1px 9px rgba(3,25,34,.68); }
    html[data-theme="light"] footer.site-footer .footer-brand { color: #f8fdff; }
    html[data-theme="light"] footer.site-footer .footer-brand-copy span, html[data-theme="light"] footer.site-footer .footer-space-credit { color: #d4edf1; }
    html[data-theme="light"] footer.site-footer .footer-mark { background: rgba(4,32,40,.42); border-color: rgba(94,234,212,.7); }
    html[data-theme="light"] footer.site-footer .footer-copy { padding: .25rem .65rem; border-radius: 6px; background: rgba(4,32,40,.24); }

    /* ═══ VISITOR COUNTER ═══ */
    footer.site-footer .visitor-counter {
      position: relative; isolation: isolate;
      display: inline-flex; align-items: center; gap: .58rem; flex-shrink: 0;
      background:
        radial-gradient(circle at 8% 15%, rgba(94,234,212,.14), transparent 38%),
        linear-gradient(135deg, rgba(12,22,34,.82), rgba(14,14,31,.9));
      border: 1px solid rgba(94,234,212,.22);
      padding: .38rem .58rem .38rem .46rem;
      border-radius: 8px;
      font-family: 'Fira Code', monospace;
      font-size: .72rem;
      color: var(--muted);
      transition: border-color .3s, box-shadow .3s;
      box-shadow: inset 0 1px 0 rgba(255,255,255,.045), 0 8px 24px rgba(0,0,0,.14);
    }
    footer.site-footer .visitor-counter::before {
      content: ''; position: absolute; z-index: -1; inset: 0 auto 0 0; width: 2px;
      background: linear-gradient(180deg, transparent, var(--teal), transparent);
    }
    footer.site-footer .visitor-counter:hover { border-color: rgba(94,234,212,.5); box-shadow: 0 8px 26px rgba(0,229,184,.1); }
    footer.site-footer .vc-planet {
      position: relative; width: 29px; height: 29px; flex: 0 0 29px;
      display: grid; place-items: center;
    }
    footer.site-footer .vc-planet::before {
      content: ''; width: 16px; height: 16px; border-radius: 50%;
      background: radial-gradient(circle at 30% 25%, #d8fff8 0 8%, var(--teal) 22%, #2787a6 60%, #5143a8 100%);
      box-shadow: 0 0 13px rgba(94,234,212,.34);
    }
    footer.site-footer .vc-planet::after {
      content: ''; position: absolute; width: 26px; height: 9px; border-radius: 50%;
      border: 1.5px solid rgba(251,191,36,.82); transform: rotate(-17deg);
      box-shadow: 0 0 7px rgba(251,191,36,.14);
    }
    footer.site-footer .vc-label { color: var(--text); font-size: .66rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
    footer.site-footer .vc-count {
      position: relative; display: grid; place-items: center;
      width: 48px; height: 22px; overflow: hidden; border-radius: 6px;
      background: linear-gradient(135deg, #0fd6b1, #38bdf8);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.32), 0 0 12px rgba(0,229,184,.12);
    }
    footer.site-footer .vc-count::before {
      content: '···'; position: absolute; inset: 0; display: grid; place-items: center;
      color: #042b31; font-size: .7rem; font-weight: 900; letter-spacing: .06em;
    }
    footer.site-footer .vc-badge-img { position: relative; z-index: 1; width: auto; height: 22px; display: block; transform: translateX(-14px); }
    html[data-theme="light"] footer.site-footer .visitor-counter {
      background: linear-gradient(135deg, rgba(255,255,255,.78), rgba(223,246,242,.9));
      border-color: rgba(13,148,136,.24); box-shadow: inset 0 1px 0 rgba(255,255,255,.8), 0 8px 24px rgba(13,148,136,.09);
    }


body.lecture-home footer.site-footer{margin-top:72px;border:0;isolation:isolate;backdrop-filter:none;-webkit-backdrop-filter:none}
footer.site-footer .site-footer-art{position:absolute;inset:auto 0 0;height:340px;z-index:-1;pointer-events:none;overflow:hidden;opacity:.7;mask-image:linear-gradient(0deg,#000,transparent 95%)}
footer.site-footer .site-footer-art img{position:absolute;bottom:-8px;left:50%;transform:translateX(-50%) rotate(-11deg);width:160vw;max-width:none;height:auto;mix-blend-mode:screen}
html[data-theme=light] footer.site-footer .site-footer-art{opacity:1;mask-image:linear-gradient(0deg,#000,transparent 98%);background:linear-gradient(0deg,#0b2635,transparent)}
html[data-theme=light] footer.site-footer .site-footer-art img{opacity:.66;mix-blend-mode:screen}
@media(max-width:700px){
 footer.site-footer .footer-inner{grid-template-columns:1fr;justify-items:center;gap:.85rem;text-align:center}
 footer.site-footer .footer-brand,footer.site-footer .footer-signal{justify-self:center}
 footer.site-footer .site-footer-art img{width:270vw;bottom:10px}
}
@media(prefers-reduced-motion:reduce){footer.site-footer .visitor-counter{transition:none}}
body.lecture-home footer.site-footer{text-align:start}
footer.site-footer{--text:#f0f4ff;--muted:#94a3b8;--teal:#00e5b8}
html[data-theme=light] footer.site-footer{--text:#0d292e;--muted:#3d6065;--teal:#087d72}
footer.site-footer .site-footer-art::after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,#0b1420bf,transparent 45%)}
html[data-theme=light] footer.site-footer .site-footer-art::after{background:linear-gradient(0deg,#092a3cb3,transparent 45%)}