:root{color-scheme:light;--blue:#1764db;--ink:#182b43;--muted:#64758b;--line:#dae3ef;--paper:#fff;--bg:#f0f5fb;--green:#17836b}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;font-size:15px;line-height:1.7}.shell{max-width:1080px;margin:auto;padding:0 48px}header{height:104px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}a{color:inherit}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-size:19px;font-weight:700;letter-spacing:-.4px}.brand-icon{display:grid;place-items:center;width:35px;height:35px;border-radius:10px;color:white;background:var(--blue);font-size:29px;line-height:1;padding-bottom:3px}.brand-light{font-size:15px;font-weight:450;color:var(--muted);letter-spacing:0}.header-label{font-size:12px;color:var(--muted)}main{padding:56px 0 48px}.intro{position:relative;padding:0 0 29px}.eyebrow{display:flex;align-items:center;gap:8px;color:var(--blue);font-size:12px;font-weight:600;letter-spacing:1px}.dot{background:var(--blue);width:6px;height:6px;border-radius:100%}h1{font-size:clamp(38px,5.5vw,56px);line-height:1.25;letter-spacing:-2px;margin:17px 0 16px;font-weight:750}h1 br{display:none}h1 span{color:var(--blue)}.intro>p{margin:0;color:var(--muted);font-size:15px}.mobile-break{display:none}.workspace{background:var(--paper);border:1px solid #d7e2f1;border-radius:18px;box-shadow:0 12px 48px #254c7e09;overflow:hidden}form{padding:27px 30px 23px}.field-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:13px;gap:10px}label{font-size:14px;font-weight:650}.text-button{padding:3px 0;background:transparent;border:none;display:inline-flex;align-items:center;gap:5px;color:var(--blue);font:inherit;font-size:12px;cursor:pointer}.text-button 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9px}.spec{font-family:ui-monospace,Consolas,monospace;font-size:11px;color:var(--muted)}.result-body{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:27px;align-items:center}.player-wrap{background:#142338;border-radius:10px;overflow:hidden;display:flex;align-items:center;justify-content:center;min-height:180px}video{display:block;width:100%;max-height:350px}.author{font-size:12px;color:var(--blue);margin:0 0 8px}.video-info h2{font-size:17px;line-height:1.65;margin:0 0 8px;overflow-wrap:anywhere;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}.duration{font-size:12px;color:var(--muted);margin:8px 0 18px}.download{width:100%;gap:18px}.download svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6}.download-hint{font-size:11px;color:var(--muted);margin:6px 0 0;text-align:center}.expiry{font-size:11px;color:#7b8a9e;text-align:center;border-top:1px solid #edf1f6;padding:13px 0;margin:23px 0 0}.details{display:flex;justify-content:space-around;gap:12px;padding:24px 10px;color:var(--muted);font-size:12px}.details>div{display:flex;gap:8px;align-items:center}.detail-icon{font-size:20px;line-height:1;color:#567fae}.help{padding:20px 0 0;border-top:1px solid var(--line);max-width:100%}.help h2{font-size:13px;font-weight:650;margin:0 0 8px}.help p{font-size:12px;color:#718097;margin:6px 0;line-height:1.9}footer{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:21px 0 30px;color:#8994a5;font-size:11px}[hidden]{display:none!important}@media(max-width:600px){.shell{padding:0 21px}header{height:78px}.brand{font-size:17px;gap:9px}.brand-light{font-size:12px}.brand-icon{width:30px;height:30px;font-size:26px}.header-label{font-size:11px}main{padding:36px 0 35px}h1{font-size:42px;line-height:1.25;letter-spacing:-1px}h1 br,.mobile-break{display:block}.intro{padding-bottom:26px}.intro>p{font-size:13px;line-height:1.9}.eyebrow{font-size:11px}form{padding:20px}.field-heading .text-button{font-size:11px}textarea{padding:13px;min-height:150px;font-size:13px}.form-bottom{gap:12px}.shortcut{display:none}.primary{margin-left:auto;padding:10px 20px}.status{padding:13px 20px}.details{padding:22px 0;gap:7px;justify-content:space-between;align-items:flex-start;font-size:10px}.details>div{gap:4px;flex-direction:column;align-items:center;text-align:center}.detail-icon{font-size:18px}.result{padding:20px 20px 0}.result-body{grid-template-columns:1fr;gap:20px}.video-info h2{font-size:16px}.download{margin:0}.player-wrap{min-height:170px}.help{padding-top:19px}.help p{font-size:11px}.header-label{display:none}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
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