:root{
  --bg:#f4f8ff;--card:#fff;--ink:#0d1b2a;--muted:#667085;--line:#dbe5f2;
  --blue:#2563eb;--blue2:#0ea5e9;--soft:#eaf2ff;--ok:#0f9f6e;--shadow:0 18px 50px rgba(21,52,93,.10)
}
*{box-sizing:border-box}
html{background:var(--bg)}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:
  radial-gradient(circle at 10% 0%,rgba(125,211,252,.24),transparent 34rem),
  radial-gradient(circle at 95% 10%,rgba(147,197,253,.22),transparent 30rem),var(--bg)}
button,input,select{font:inherit}
button{cursor:pointer}
.topbar{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1180px)/2));border-bottom:1px solid rgba(219,229,242,.8);background:rgba(255,255,255,.72);backdrop-filter:blur(16px);position:sticky;top:0;z-index:10}
.brand{display:flex;gap:10px;align-items:center;color:var(--ink);font-weight:800;text-decoration:none}
.brand img{width:38px;height:38px;object-fit:contain}
.mp3-link{color:var(--blue);text-decoration:none;font-weight:700;font-size:14px}
.shell{width:min(1180px,calc(100% - 32px));margin:0 auto}
.hero{text-align:center;padding:82px 0 40px}
.eyebrow,.kicker{font-size:12px;letter-spacing:.14em;font-weight:900;color:var(--blue)}
.hero h1{font-size:clamp(42px,6vw,76px);line-height:.98;letter-spacing:-.055em;margin:14px 0 24px}
.hero h1 span{background:linear-gradient(100deg,var(--blue),var(--blue2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero>p{max-width:720px;margin:0 auto;color:var(--muted);font-size:18px;line-height:1.65}
.url-card{max-width:900px;margin:42px auto 0;background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:24px;padding:18px;box-shadow:var(--shadow);text-align:left}
.url-card label{font-size:13px;font-weight:800;display:block;margin:0 0 9px 4px}
.url-row{display:grid;grid-template-columns:1fr auto;gap:10px}
.url-row input{width:100%;border:1px solid #cfdbe9;border-radius:15px;padding:16px 17px;outline:none;background:#fbfdff}
.url-row input:focus{border-color:#7aa7f7;box-shadow:0 0 0 4px rgba(37,99,235,.10)}
.url-row button,.primary-btn{border:0;border-radius:15px;background:linear-gradient(135deg,var(--blue),#1d4ed8);color:white;font-weight:850;padding:0 24px;min-height:52px;box-shadow:0 8px 20px rgba(37,99,235,.22)}
.url-row button:disabled,.primary-btn:disabled{opacity:.55;cursor:not-allowed}
.support-line{display:flex;gap:8px;flex-wrap:wrap;color:#8894a4;font-size:12px;margin:11px 4px 0}
.status{max-width:900px;margin:0 auto 22px;padding:14px 16px;border-radius:14px;background:#fff7e6;border:1px solid #f5d59a;color:#805b12}
.status.error{background:#fff0f0;border-color:#f0b8b8;color:#982626}
.status.ok{background:#ecfdf5;border-color:#a7e7cf;color:#087352}
.hidden{display:none!important}
.result{padding:12px 0 70px}
.video-card{display:grid;grid-template-columns:260px 1fr;gap:22px;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:16px;box-shadow:0 10px 32px rgba(21,52,93,.07)}
.thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:15px;background:#e8eef7}
.video-meta{min-width:0;padding:6px 6px 4px 0}
.meta-top{display:flex;align-items:center;gap:10px}
.pill{display:inline-flex;border-radius:999px;background:var(--soft);color:var(--blue);font-size:11px;font-weight:900;padding:7px 9px;text-transform:uppercase}
.muted{color:var(--muted)}
.video-meta h2{font-size:24px;line-height:1.25;margin:10px 0 6px}
.video-meta p{margin:0 0 12px}
.subtitle-summary{display:flex;gap:7px;flex-wrap:wrap}
.track-chip{font-size:11px;border:1px solid var(--line);background:#fbfdff;border-radius:999px;padding:6px 9px;color:#4b5b70}
.workspace{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(290px,.75fr);gap:18px;margin-top:18px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 10px 32px rgba(21,52,93,.06)}
.panel-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.kicker{margin:0 0 4px}
.panel h3{font-size:22px;margin:0}
.zero-ai{border-radius:999px;padding:7px 10px;background:#e8faf3;color:var(--ok);font-size:12px;font-weight:900}
.language-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:22px 0 14px}
.language-grid label{font-size:12px;font-weight:800;color:#445266}
.language-grid select{display:block;width:100%;margin-top:7px;border:1px solid var(--line);border-radius:12px;padding:12px;background:#fbfdff}
.action-row{display:flex;gap:9px}
.primary-btn{padding:12px 18px;min-height:44px}
.soft-btn{border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 16px;font-weight:800;color:#435167}
.soft-btn:disabled{opacity:.45;cursor:not-allowed}
.empty-state{border:1px dashed #cfd9e7;border-radius:15px;padding:34px 18px;text-align:center;color:#8a97a8;margin-top:18px;background:#fbfdff}
.transcript-box{max-height:520px;overflow:auto;margin-top:18px;border:1px solid var(--line);border-radius:15px;background:#fbfdff;padding:8px}
.cue{padding:12px 12px 13px;border-bottom:1px solid #e8eef6}
.cue:last-child{border-bottom:0}
.cue-time{font-size:11px;color:#8a97a8;margin-bottom:5px;font-variant-numeric:tabular-nums}
.cue-primary{font-size:15px;line-height:1.55}
.cue-secondary{font-size:14px;line-height:1.5;color:#59697d;margin-top:4px}
.download-strip{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:14px;font-size:12px;color:#68778b}
.download-strip button{border:1px solid var(--line);border-radius:9px;background:#fff;padding:7px 10px;font-weight:800;color:#334155}
.permission{display:flex;gap:10px;align-items:flex-start;padding:14px 0 16px;color:#617084;font-size:13px;line-height:1.45}
.permission input{margin-top:3px}
.media-btn{width:100%;display:flex;flex-direction:column;align-items:flex-start;gap:4px;border:1px solid var(--line);border-radius:15px;background:#fbfdff;padding:15px 16px;margin-bottom:10px;color:#233248}
.media-btn span{font-size:12px;color:#718096}
.media-btn strong{font-size:15px}
.media-btn:not(:disabled):hover{border-color:#9cbcf3;background:#f5f9ff}
.media-btn:disabled{opacity:.48;cursor:not-allowed}
.learning-card{margin-top:18px;padding:17px;border-radius:16px;background:linear-gradient(150deg,#eef5ff,#f7fbff);border:1px solid #d7e5fb}
.learning-card .soon{font-size:10px;font-weight:900;color:var(--blue);letter-spacing:.12em}
.learning-card strong{display:block;margin:7px 0 5px}
.learning-card p{margin:0;color:#68778b;font-size:13px;line-height:1.5}
.legal-note{text-align:center;color:#8a97a8;font-size:12px;margin-top:18px}
footer{width:min(1180px,calc(100% - 32px));margin:0 auto;padding:26px 0 38px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:#8794a5;font-size:12px}
@media(max-width:820px){
  .hero{padding-top:55px}.video-card{grid-template-columns:1fr}.thumb{max-height:270px}.workspace{grid-template-columns:1fr}.language-grid{grid-template-columns:1fr}.topbar{padding:0 16px}.mp3-link{font-size:12px}
}
@media(max-width:560px){
  .shell{width:min(100% - 20px,1180px)}.hero h1{font-size:42px}.hero>p{font-size:15px}.url-card{padding:12px;border-radius:18px}.url-row{grid-template-columns:1fr}.url-row button{min-height:49px}.dot{display:none}.video-card,.panel{border-radius:18px}.video-card{padding:11px}.panel{padding:17px}.action-row{flex-wrap:wrap}footer{flex-direction:column;gap:6px}
}