:root{color-scheme:dark;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#0b1020;color:#f2f5ff}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(circle at top left,rgba(72,96,255,.24),transparent 32rem),#0b1020}button,input{font:inherit}main{max-width:960px;margin:0 auto;padding:32px 20px 64px}.hero{margin-bottom:28px}.eyebrow{margin:0 0 8px;color:#9fb4ff;text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;font-weight:700}h1{margin:0;font-size:clamp(2rem,7vw,4rem);line-height:1}.intro{max-width:680px;color:#c8d2f0;line-height:1.7}.url-form{display:grid;gap:10px;padding:18px;border:1px solid #2c3555;border-radius:16px;background:#121a31e0}.url-form label{font-weight:700}.url-form__controls{display:flex;gap:12px}.url-form input{flex:1;min-width:0;border:1px solid #384367;border-radius:10px;padding:12px 14px;background:#090e1b;color:#fff}.url-form button{border:0;border-radius:10px;padding:0 18px;background:#6b7cff;color:#fff;font-weight:700;cursor:pointer}.url-form button:disabled{cursor:wait;opacity:.7}.error-notice{border:1px solid #f87171;border-radius:12px;padding:12px 14px;background:#7f1d1d66;color:#fecaca}.results{margin-top:24px}.subtitle-card{border:1px solid #2c3555;border-radius:12px;padding:16px;margin-top:16px;background:#121a31}.subtitle-card__time{margin:0 0 10px;color:#92a3d2;font-size:.85rem}.subtitle-card__english{margin:0 0 8px;font-size:1.1rem;line-height:1.6}.subtitle-card__chinese{margin:0;color:#dce6ff;font-size:1.05rem;line-height:1.7}