:root{color-scheme:dark;font-family:Inter,"Pretendard",system-ui,sans-serif;background:#09070e;color:#f8f4ff}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 80% 0,#241231 0,#09070e 38%)}header{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:24px;padding:18px 28px;background:#100b18e8;border-bottom:1px solid #39294a;backdrop-filter:blur(16px)}header a{color:#d8b8ff;text-decoration:none}header div{display:grid;gap:3px}header b{font-size:20px}header small,.help{color:#a99db5}main{width:min(1120px,calc(100% - 32px));margin:26px auto 80px;display:grid;grid-template-columns:1fr 1fr;gap:18px}section{padding:22px;border:1px solid #39294a;border-radius:18px;background:#120d1acc;box-shadow:0 18px 50px #0005}h2{margin:0 0 16px;font-size:18px}h3{font-size:14px;color:#cfc1dd}.cards,.buttons{display:flex;flex-wrap:wrap;gap:10px;max-height:330px;overflow:auto}.cards button{width:168px;padding:8px;background:#0c0911;border:1px solid #3c3046;border-radius:12px;color:#fff;text-align:left}.cards video{width:100%;height:96px;object-fit:cover;border-radius:8px}.cards b{display:block;margin-top:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.buttons button{padding:10px 14px;border:1px solid #554064;border-radius:999px;background:#171020;color:#eee}.buttons button.active,.cards button.active{border-color:#bd75ff;background:linear-gradient(135deg,#7035d9,#c8579b)}.stage{position:relative;min-height:280px;display:grid;place-items:center;background:#050408;border:1px dashed #604778;border-radius:14px;overflow:hidden}.stage video{display:block;width:100%;max-height:430px;object-fit:contain}.marker{position:absolute;width:28px;height:28px;border:3px solid #ffcf55;border-radius:50%;transform:translate(-50%,-50%);box-shadow:0 0 0 6px #0007,0 0 20px #ffb52b}.stage p{color:#82758d}output{display:block;margin-top:10px;color:#f7c96f}textarea{width:100%;min-height:100px;padding:14px;border:1px solid #554064;border-radius:12px;background:#09070d;color:white;font:inherit;resize:vertical}#start{width:100%;margin-top:14px;padding:15px;border:0;border-radius:12px;background:linear-gradient(90deg,#7838ed,#ff7449);color:#fff;font-weight:800;font-size:16px}#start:disabled{filter:grayscale(1);opacity:.45}.progress{height:9px;background:#251b2d;border-radius:99px;overflow:hidden}.progress i{display:block;width:0;height:100%;background:linear-gradient(90deg,#7135ed,#ff7450);transition:width .3s}#result video{width:100%;margin-top:12px;border-radius:12px}#status{min-height:44px;color:#d8cce3}@media(max-width:800px){main{grid-template-columns:1fr}.cards button{width:calc(50% - 5px)}}