*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,PingFang SC,sans-serif;background:linear-gradient(135deg,#0d1117,#161b22);min-height:100vh;padding:20px;color:#c9d1d9}header{text-align:center;margin-bottom:30px;padding:20px;background:#161b22e6;border-radius:12px;border:1px solid rgba(240,246,252,.1);box-shadow:0 4px 12px #0003}.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:1400px;margin:0 auto}.video-card{cursor:pointer;animation:fadeInUp .5s ease-out forwards;animation-delay:calc(var(--card-index, 0) * .08s);background:#161b22cc;border-radius:10px;overflow:hidden;box-shadow:0 5px 15px #00000040;transition:all .25s ease;border:1px solid rgba(240,246,252,.08)}.video-card:hover{transform:translateY(-4px);box-shadow:0 10px 20px #0000004d;border-color:#f0f6fc26}.video-wrapper{position:relative;aspect-ratio:16/9;background:#000}.video-wrapper video{width:100%;height:100%;display:block;object-fit:cover}.play-button{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:48px;height:48px;background:#f0f6fc26;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#c9d1d9;cursor:pointer;font-size:20px;transition:all .2s ease;border:1px solid rgba(240,246,252,.1)}.play-button:hover{background:#f0f6fc33;transform:translate(-50%,-50%) scale(1.05)}.video-info{padding:15px}.video-info h3{font-size:.9em;margin-bottom:8px;color:#f0f6fc;font-weight:500}.video-desc{color:#8b949e;font-size:.85em;margin-bottom:12px;line-height:1.4}.video-meta{display:flex;justify-content:space-between;align-items:center;font-size:.75em;color:#6e7681;padding-top:12px;border-top:1px solid rgba(240,246,252,.08)}.duration{background:#58a6ff14;color:#79c0ff;padding:3px 10px;border-radius:10px;font-weight:400;border:1px solid rgba(88,166,255,.1)}.file-name{background:#161b2280;padding:3px 8px;border-radius:5px;font-family:SF Mono,Monaco,monospace;color:#a5d6ff;max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border:1px solid rgba(240,246,252,.05);font-size:.75em}footer{text-align:center;margin-top:50px;padding:25px 20px;background:#0d1117e6;border-radius:12px;border:1px solid rgba(240,246,252,.08);box-shadow:0 4px 12px #0003}footer p{margin-bottom:10px;color:#c9d1d9;font-size:.95em;font-weight:300;line-height:1.5}footer a{color:#79c0ff;text-decoration:none}footer a:hover{color:#a5d6ff}@keyframes fadeInUp{0%{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}.video-modal{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000e6;display:flex;justify-content:center;align-items:center;z-index:1000;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);animation:fadeIn .3s ease-out}.modal-content{background:#161b22;border-radius:12px;width:90%;max-width:900px;overflow:hidden;box-shadow:0 10px 40px #00000080;border:1px solid rgba(240,246,252,.15);animation:scaleIn .3s ease-out}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;background:#0d1117;color:#f0f6fc;border-bottom:1px solid rgba(240,246,252,.1)}.modal-header h3{margin:0;font-size:1.1em;font-weight:500}.close-btn{background:none;border:none;color:#c9d1d9;font-size:28px;cursor:pointer;padding:0 10px;transition:all .2s ease;border-radius:4px}.close-btn:hover{color:#f0f6fc;background:#f0f6fc1a}.modal-content video{width:100%;height:auto;max-height:70vh;background:#000;display:block}.modal-footer{padding:15px 20px;background:#0d1117;color:#8b949e;border-top:1px solid rgba(240,246,252,.1)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@media (max-width: 1200px){.gallery{grid-template-columns:repeat(3,1fr);gap:18px}}@media (max-width: 900px){.gallery{grid-template-columns:repeat(2,1fr);gap:16px}.modal-content{width:95%;max-width:95%}}@media (max-width: 600px){body{padding:15px}.gallery{grid-template-columns:1fr;gap:14px}footer{padding:20px 15px}.modal-header{padding:12px 15px}.modal-header h3{font-size:1em}.close-btn{font-size:24px}.modal-footer{padding:12px 15px}}