:root{color-scheme:light;--bg:#f7f8fa;--ink:#202a35;--muted:#647080;--line:#e3e7ed;--accent:#263b46;--green:#347560}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}button,textarea,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}.shell{max-width:1040px;margin:auto;padding:0 40px;min-height:100vh;display:flex;flex-direction:column}header{height:100px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{display:flex;align-items:center;gap:13px;font-size:20px;font-weight:650}.logo{width:40px;height:40px;border-radius:12px;background:var(--accent);color:white;display:grid;place-items:center;font-size:22px}.brand-note{font-size:14px;font-weight:400;color:var(--muted);margin-left:16px}.home{font-size:14px;color:var(--muted)}main{width:100%;max-width:800px;margin:0 auto;flex:1;padding:48px 0 60px}.eyebrow{font-size:12px;font-weight:600;letter-spacing:2px;color:#526a70}h1{font-size:clamp(28px,4vw,38px);font-weight:650;letter-spacing:-1px;line-height:1.35;margin:14px 0 10px}.heading>p{color:var(--muted);margin:0 0 30px}.workspace,.result{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:0 8px 28px #263b4603}.platform-support{margin:0 0 24px;color:var(--muted);font-size:14px;line-height:1.8}.label-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}label{font-weight:550;font-size:15px}.text-button{border:0;background:transparent;color:#526a70;font-size:14px;padding:6px 8px;border-radius:6px}.text-button:hover{background:#eef3f5}textarea{display:block;width:100%;resize:vertical;min-height:122px;max-height:350px;border:1px solid #dce3e9;border-radius:12px;background:#fcfdfe;padding:15px 17px;color:var(--ink);font-size:16px;line-height:1.7}textarea::placeholder{color:#8a939f}textarea:focus{outline:2px solid #548291;outline-offset:2px}.form-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:20px}.hint{font-size:14px;color:var(--muted)}.primary{display:inline-flex;align-items:center;justify-content:center;background:var(--accent);color:#fff;border:1px solid var(--accent);border-radius:10px;min-height:46px;padding:10px 24px;font-size:15px;font-weight:550;white-space:nowrap}.primary:hover{background:#365463}.primary:disabled{opacity:.5;cursor:wait}.secondary{background:#fff;border:1px solid #c7d3da;border-radius:9px;padding:9px 20px;margin-top:16px;color:var(--ink)}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #5b8799;outline-offset:4px}#notice{background:#fff4ec;border-radius:9px;padding:12px 15px;color:#98562c;font-size:14px;margin:18px 0 0}.result{margin-top:20px}.result-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}h2{font-size:15px;font-weight:600;margin:0}.video-info{display:flex;gap:20px;align-items:center}.cover{flex:none;width:132px;height:84px;border-radius:10px;overflow:hidden;background:#edf2f3;display:grid;place-items:center;color:#81969d}.cover img{width:100%;height:100%;object-fit:cover}.video-copy{min-width:0}.small-label{font-size:12px;color:var(--green)}h3{font-size:17px;line-height:1.5;margin:3px 0 7px;overflow-wrap:anywhere}.video-copy p{font-size:14px;color:var(--muted);margin:0}.download-options{display:flex;gap:14px;align-items:center;margin-top:24px;padding-top:22px;border-top:1px solid var(--line)}select{padding:9px 28px 9px 12px;min-height:44px;border:1px solid #d5dfe5;background:white;border-radius:8px;color:var(--ink);font-size:15px}.download-options .primary{margin-left:auto}#progress-area{margin-top:24px}.progress-label{display:flex;justify-content:space-between;gap:15px;font-size:14px;color:var(--muted);margin-bottom:8px}progress{display:block;appearance:none;width:100%;height:6px;border:0;border-radius:5px;overflow:hidden;background:#edf1f3}progress::-webkit-progress-bar{background:#edf1f3}progress::-webkit-progress-value{background:#4f8575;border-radius:5px}progress::-moz-progress-bar{background:#4f8575}progress:not([value]){opacity:.55}.complete{display:flex;justify-content:space-between;gap:18px;align-items:center;margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}.complete strong{color:var(--green);font-size:15px}.complete p{font-size:14px;color:var(--muted);margin:4px 0 0}.notes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin-top:35px}.step{font-size:12px;color:#778691;letter-spacing:1px}.notes h2{margin:6px 0;font-size:14px}.notes p{margin:0;color:var(--muted);font-size:14px;line-height:1.8}.footnote{font-size:13px;color:#75808d;margin:28px 0 0}footer{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:23px 0 26px;border-top:1px solid var(--line);font-size:12px;color:#75808d}@media(max-width:600px){.shell{padding:0 20px}header{height:78px}.brand-note{display:none}main{padding:32px 0 40px}.workspace,.result{padding:20px;border-radius:17px}.form-bottom{flex-direction:column;align-items:stretch;gap:13px}.hint{font-size:13px}.form-bottom .primary{width:100%}.notes{gap:16px;margin-top:28px}.notes p{font-size:13px}.cover{width:90px;height:70px}.video-info{gap:14px}.download-options{flex-wrap:wrap;gap:10px}.download-options .primary{width:100%;margin-top:5px}.complete{align-items:stretch;flex-direction:column}h3{font-size:16px}}@media(prefers-reduced-motion:no-preference){button,a{transition:background .15s,opacity .15s}.result{animation:appear .2s ease-out}@keyframes appear{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}}
#asset-section{border-top:1px solid var(--line);margin-top:24px;padding-top:18px}.asset-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:16px}.asset-card{border:1px solid var(--line);border-radius:12px;padding:12px;display:flex;flex-direction:column;gap:9px;min-width:0}.asset-card img{width:100%;height:130px;object-fit:contain;background:var(--bg);border-radius:6px}.asset-card label{display:flex;gap:8px;align-items:center}.asset-card p{font-size:13px;color:var(--muted);margin:0;overflow-wrap:anywhere}.asset-card a{margin-top:auto;text-align:center;background:#eef3f5}#gallery-controls{display:flex;align-items:center;gap:12px;flex-wrap:wrap}#gallery-controls .secondary{margin-top:0}#batch-status{width:100%;margin:0}#quality{min-width:0;max-width:100%}.download-options{flex-wrap:wrap}@media(max-width:600px){.asset-list{grid-template-columns:repeat(2,minmax(0,1fr))}.asset-card img{height:110px}}
#slideshow-controls{margin-top:20px;padding:18px;border:1px solid var(--line);border-radius:12px;background:var(--bg)}.slideshow-options{display:flex;gap:14px;align-items:center;flex-wrap:wrap}.slideshow-options .secondary{margin:0}#slideshow-controls .footnote{margin-top:12px}#slideshow-preview{display:block;max-width:100%;max-height:360px;margin:16px 0;border-radius:10px;background:#111}#slideshow-result .primary{margin-top:4px}
.breadcrumb{display:flex;gap:12px;align-items:center;font-size:13px;color:var(--muted);margin:0 0 26px}.breadcrumb a:hover{color:var(--ink);text-decoration:underline}.hub-main{padding-top:64px}.tool-list-heading{display:flex;justify-content:space-between;align-items:center;margin:42px 0 18px}.tool-list-heading>span{font-size:11px;color:var(--muted);letter-spacing:1px}.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.tool-card{display:flex;flex-direction:column;background:white;border:1px solid var(--line);border-radius:20px;padding:28px;transition:border-color .2s,box-shadow .2s}.tool-card:hover{border-color:#b4c3ca;box-shadow:0 14px 30px #263b4609}.tool-card-top{display:flex;justify-content:space-between;align-items:center;gap:12px}.tool-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;background:#eaf4f0;color:#387560}.tool-icon svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.tool-tag{font-size:11px;color:var(--muted);background:var(--bg);padding:5px 10px;border-radius:20px}.tool-card h3{font-size:23px;margin:24px 0 10px}.tool-card p{font-size:14px;line-height:1.85;color:var(--muted);margin:0 0 20px}.tool-platforms{font-size:12px;color:#75808d;margin-bottom:24px}.tool-card-bottom{display:flex;justify-content:space-between;align-items:center;gap:10px;border-top:1px solid var(--line);padding-top:18px;margin-top:auto;font-size:12px}.tool-card-bottom>span{color:var(--muted)}.tool-card-bottom strong{font-weight:600}.hub-closing{font-size:13px;color:var(--muted);margin-top:26px}@media(max-width:600px){.tool-grid{grid-template-columns:1fr}.hub-main{padding-top:36px}.tool-card{padding:24px}.tool-list-heading{margin-top:30px}}
#part-select{flex:1 1 260px;min-width:0;max-width:100%}#load-part{margin-top:0}