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13px;border-radius:20px}main{max-width:1400px;margin:auto;padding:40px 5%}.intro{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}small{letter-spacing:2.5px;color:var(--green);font-size:10px;font-weight:600}h1{font-size:36px;margin:8px 0}p{color:var(--muted);font-size:14px;line-height:1.8;margin:7px 0}.primary{background:var(--green);color:white;border-radius:9px;padding:13px 20px;font-size:14px}.workspace{display:grid;grid-template-columns:1.05fr 1fr;gap:28px;align-items:start}.video-panel{position:sticky;top:20px}.screen{aspect-ratio:16/9;background:#273d33;border-radius:14px;overflow:hidden;display:grid;place-items:center;color:white;background-image:radial-gradient(ellipse at 15% 10%,#71876a77,transparent 55%),linear-gradient(140deg,#3f5b4a,#20342c)}.screen iframe{width:100%;height:100%;border:0}.placeholder{text-align:center;padding:20px}.placeholder h2{font-size:22px}.placeholder p{color:#c0cbbd;margin-bottom:20px}.placeholder 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.selected{color:var(--green);border-color:var(--orange);font-weight:600}#sentences{max-height:540px;overflow:auto;scroll-behavior:smooth}.sentence{padding:19px 24px;border-bottom:1px solid #edf0e9;position:relative;cursor:pointer}.sentence.current{background:#fff2cb;border-left:3px solid var(--orange);padding-left:21px}.meta{display:flex;justify-content:space-between;color:#9da69b;font-size:11px;margin-bottom:12px}.current .meta{color:#b68a48}.english{font-size:19px;line-height:1.9;letter-spacing:.1px}.word{padding:0 1px}.word.phrase{color:#2c7959;background:#e4eddc;border-bottom:2px solid #a6c894;border-radius:4px}.word:hover{background:#fce4cf;color:#bd6428}.chinese{font-size:14px;color:#858b7e;margin-top:8px;line-height:1.8}.star{font-size:19px;color:#a4b09e;padding:0 6px}.star.saved{color:var(--orange)}.blank{color:#be7332;border-bottom:2px solid #dcaa73;min-width:65px;display:inline-block;text-align:center;font-size:15px}.transcript-footer{text-align:center;padding:16px;font-size:10px;color:#9aA593}.empty{padding:50px 25px;text-align:center;color:var(--muted)}dialog{border:1px solid #e2e7db;border-radius:18px;padding:28px;width:min(520px,92vw);color:var(--ink);box-shadow:0 20px 90px #0002}dialog::backdrop{background:#20382d77;backdrop-filter:blur(4px)}.modal-head{display:flex;justify-content:space-between;align-items:center}.modal-head h2{font-size:23px}.modal-head button{font-size:20px}label{display:block;font-size:13px;margin:20px 0}input{display:block;width:100%;padding:12px;border:1px solid #dbe2d5;border-radius:8px;margin-top:8px}details{font-size:12px;color:#7c897c}pre{overflow:auto;font-size:11px;background:#f2f5ed;padding:10px}.fine{font-size:11px}#form-error{color:#ba4a31}#word-dialog a{display:inline-block;color:var(--green);margin-top:20px;font-size:14px}@media(max-width:800px){header{height:65px;padding:0 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