.semin-video-section{margin:48px 0;padding:28px;border:1px solid #334461;border-radius:22px;background:#111b30}.semin-video-intro h2{margin:0 0 10px}.semin-video-intro p{color:#c7d3e5;margin:0 0 22px}.semin-video-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.semin-video-card{background:#172239;border:1px solid #34445f;border-radius:16px;padding:16px;min-width:0}.semin-video-card video{display:block;width:100%;max-height:420px;aspect-ratio:16/9;object-fit:contain;background:#030712;border-radius:10px}.semin-video-card h3{margin:16px 0 6px}.semin-video-card p{color:#c7d3e5;margin:0 0 8px}@media(max-width:720px){.semin-video-grid{grid-template-columns:1fr}.semin-video-section{padding:16px;margin:24px 0}}