.aitw-fv-app{max-width:1180px;margin:40px auto;padding:28px;border:1px solid rgba(255,255,255,.1);border-radius:24px;background:linear-gradient(145deg,#080b15,#10172c);color:#fff;box-shadow:0 25px 80px rgba(0,0,0,.25)}.aitw-fv-app header{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:26px}.brand{display:flex;gap:18px;align-items:center}.brand small{font-size:11px;letter-spacing:.18em;color:#8fb8ff;font-weight:700}.brand h1{font-size:36px;margin:7px 0}.brand p{margin:0;color:#aeb9ce}.badge{padding:8px 12px;border-radius:999px;background:rgba(100,120,255,.1);border:1px solid rgba(150,170,255,.25);color:#cbd5ff;font-size:12px}.aitw-fv-logo{position:relative;width:64px;height:64px;flex:0 0 64px;border-radius:18px;background:radial-gradient(circle,rgba(92,122,255,.28),rgba(23,32,65,.85));border:1px solid rgba(130,165,255,.3);box-shadow:0 0 30px rgba(83,105,255,.22);overflow:hidden}.o{position:absolute;left:50%;top:50%;border:1px solid rgba(120,190,255,.75);border-radius:50%}.o.a{width:35px;height:35px;margin:-18px;animation:spin 6s linear infinite}.o.b{width:50px;height:24px;margin:-12px -25px;border-color:rgba(168,120,255,.65);animation:spinr 5s linear infinite}.n{position:absolute;width:6px;height:6px;border-radius:50%;background:#72d8ff;box-shadow:0 0 12px #72d8ff}.n1{left:11px;top:19px}.n2{right:10px;top:39px;background:#ad8cff}.core{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-size:19px;text-shadow:0 0 13px #8ab8ff;animation:pulse 2.4s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes spinr{to{transform:rotate(-360deg)}}@keyframes pulse{50%{transform:translate(-50%,-50%) scale(1.25)}}.grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.card{padding:24px;border-radius:20px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.035)}.card label{display:block;font-size:13px;font-weight:700;margin-bottom:8px;color:#dce5f7}.card textarea,.card select{width:100%;box-sizing:border-box;background:#070a12;color:#fff;border:1px solid rgba(255,255,255,.12);border-radius:11px;padding:12px;font:inherit}.card textarea{min-height:200px;resize:vertical;margin-bottom:14px}.opts{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}.card button{width:100%;padding:14px;border:0;border-radius:13px;background:linear-gradient(90deg,#527cff,#875cff);color:#fff;font-weight:800;cursor:pointer}.card button:disabled{opacity:.55}.hint,.usage,.notice{color:#9eacc3;font-size:12px;line-height:1.6}.preview{min-height:390px}.preview>div{height:100%;min-height:390px;border:1px dashed rgba(255,255,255,.15);border-radius:16px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:10px;color:#9eacc3;text-align:center}.preview video{max-width:100%;max-height:390px;border-radius:14px}.download{margin-top:12px;color:#b9c8ff}.notice{margin-top:18px;padding:13px;border:1px solid rgba(120,120,255,.25);border-radius:14px}.usage{margin-top:18px}.aitw-fv-login{max-width:650px;margin:60px auto;padding:35px;border-radius:20px;background:#10162a;color:#fff;text-align:center}@media(max-width:800px){.aitw-fv-app{margin:20px 12px;padding:18px}.aitw-fv-app header{flex-direction:column}.grid{grid-template-columns:1fr}.opts{grid-template-columns:1fr}.brand h1{font-size:30px}}