:root{--bg: #0e1117;--card: #171b23;--card2: #1e232d;--border: #272d38;--text: #e6e9ef;--muted: #8a93a6;--accent: #5b8cff;--accent2: #8a5bff;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:radial-gradient(1200px 600px at 50% -10%,#1b2130 0%,var(--bg) 60%);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;min-height:100vh}.app{max-width:1080px;margin:0 auto;padding:32px 20px 60px}header h1{margin:0 0 4px;font-size:26px}header .sub{margin:0 0 20px;color:var(--muted);font-size:14px}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px;margin-bottom:18px}.card h2{margin:0 0 14px;font-size:16px}.filepick{display:flex;align-items:center;gap:12px;cursor:pointer}.filepick input{display:none}.filepick span{flex:1;padding:14px 16px;border:1px dashed var(--border);border-radius:10px;color:var(--muted);background:var(--card2)}.status{margin-top:12px;font-size:13px;color:var(--muted)}.bar{margin-top:8px;height:6px;background:var(--card2);border-radius:4px;overflow:hidden}.bar-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));transition:width .2s}.grid{display:grid;grid-template-columns:1.3fr 1fr;gap:18px}@media (max-width: 820px){.grid{grid-template-columns:1fr}}.video-wrap{position:relative;background:#000;border-radius:10px;overflow:hidden}.video-wrap video{width:100%;display:block;max-height:420px}.caption{position:absolute;left:50%;bottom:52px;transform:translate(-50%);max-width:90%;text-align:center;padding:4px 12px;background:#000000b8;border-radius:6px;font-size:18px;line-height:1.4;text-shadow:0 1px 2px #000}.check{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:13px;color:var(--muted)}.slider{margin-bottom:16px}.slider-head{display:flex;justify-content:space-between;font-size:13px;margin-bottom:4px}.slider-head b{color:var(--accent)}.slider input[type=range]{width:100%;accent-color:var(--accent)}.slider small{color:var(--muted);font-size:11px}.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:16px 0}.stats div{background:var(--card2);border-radius:8px;padding:10px 12px;display:flex;justify-content:space-between;font-size:13px}.stats span{color:var(--muted)}.lang{display:flex;align-items:center;gap:10px;margin-bottom:16px;font-size:13px}.lang select{background:var(--card2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 10px}.actions{display:flex;flex-wrap:wrap;gap:10px}button{background:linear-gradient(180deg,var(--accent),#4574e6);color:#fff;border:none;border-radius:10px;padding:11px 16px;font-size:14px;font-weight:600;cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}button.ghost{background:transparent;border:1px solid var(--border);color:var(--text)}.transcript ol{list-style:none;margin:0;padding:0;max-height:380px;overflow-y:auto}.transcript li{display:flex;gap:10px;align-items:flex-start;padding:6px 0;border-bottom:1px solid var(--border)}.transcript .ts{background:var(--card2);color:var(--accent);border:none;border-radius:6px;padding:4px 8px;font-size:12px;font-variant-numeric:tabular-nums;flex-shrink:0}.transcript textarea{flex:1;background:transparent;color:var(--text);border:none;resize:vertical;font:inherit;font-size:14px;padding:4px}.transcript textarea:focus{outline:1px solid var(--border);border-radius:6px}footer{margin-top:24px;text-align:center;color:var(--muted);font-size:12px}