diff --git a/public/themes/website/1/zh/demo/download.html b/public/themes/website/1/zh/demo/download.html
index dd57ec3..cbdf407 100644
--- a/public/themes/website/1/zh/demo/download.html
+++ b/public/themes/website/1/zh/demo/download.html
@@ -105,7 +105,7 @@
       </div>
       <div class="d-list">
         {hcTaglib:contentPage mainField="*" subField="*"  name="hc_content" limit="12" item="vo"}
-        <a class="d-item" href="{$vo.url ?? ''}" download="{$vo.title}">
+        <a class="d-item" href="{$vo.thumbnail.url ?? ''}" download="{$vo.title}">
           <div class="d-item__main">
             <img class="d-item__pdf" src="data:image/svg+xml,%3csvg%20viewBox='0%200%2032%2032'%20xmlns='http://www.w3.org/2000/svg'%20xmlns:xlink='http://www.w3.org/1999/xlink'%20width='32.000000'%20height='32.000000'%20fill='none'%3e%3crect%20id='PDF%201'%20width='32.000000'%20height='32.000000'%20x='0.000000'%20y='0.000000'%20/%3e%3cpath%20id='矢量%20508'%20d='M28.1766%2028.9602C28.1766%2029.3602%2028.0164%2029.7441%2027.7285%2030.032C27.4402%2030.3199%2027.0566%2030.4801%2026.6562%2030.4801L5.32852%2030.4801C4.92852%2030.4801%204.52852%2030.3199%204.25664%2030.032C3.96875%2029.7437%203.80859%2029.3602%203.80859%2028.9602L3.80859%201.51992C3.80859%201.11992%203.96836%200.719922%204.25664%200.448047C4.52852%200.160156%204.92891%200%205.32852%200L18.4168%200C18.8168%200%2019.2168%200.160156%2019.5047%200.448047L27.7445%208.68828C28.0324%208.97617%2028.1926%209.36016%2028.1926%209.77617L28.1926%2028.9602L28.1766%2028.9602Z'%20fill='rgb(235,236,240)'%20fill-rule='nonzero'%20/%3e%3cpath%20id='矢量%20509'%20d='M28.1766%2028.96L28.1766%2030.4799C28.1766%2030.8799%2028.0164%2031.2799%2027.7285%2031.5518C27.4402%2031.84%2027.0566%2031.9998%2026.6562%2031.9998L5.32852%2031.9998C4.48047%2031.9998%203.80859%2031.3119%203.80859%2030.4799L3.80859%2028.96C3.80859%2029.36%203.96836%2029.7439%204.25664%2030.0318C4.54453%2030.3197%204.92852%2030.4799%205.32852%2030.4799L26.6566%2030.4799C27.5047%2030.4799%2028.1766%2029.792%2028.1766%2028.96L28.1766%2028.96Z'%20fill='rgb(193,199,208)'%20fill-rule='nonzero'%20/%3e%3cpath%20id='矢量%20510'%20d='M3.80781%2016.7682L3.80781%2013.7119L0.751953%2016.7682L3.80781%2016.7682ZM28.1758%2016.7682L28.2078%2013.7119L31.2477%2016.7682L28.1758%2016.7682L28.1758%2016.7682Z'%20fill='rgb(211,0,0)'%20fill-rule='nonzero'%20/%3e%3cpath%20id='矢量%20511'%20d='M28.1762%209.77617L28.1762%209.98398L19.9359%209.98398C19.0879%209.98398%2018.416%209.29609%2018.416%208.46406L18.416%200C18.816%200%2019.216%200.160156%2019.5039%200.448047L27.7602%208.68828C28.032%208.97617%2028.1922%209.36016%2028.1762%209.77617Z'%20fill='rgb(193,199,208)'%20fill-rule='nonzero'%20/%3e%3cpath%20id='矢量%20512'%20d='M15.7164%2019.0972L14.4629%2019.0972L14.4629%2023.5655L15.6941%2023.5655C17.0926%2023.5655%2017.8484%2022.7776%2017.8484%2021.2577C17.8484%2019.9351%2017.157%2019.1147%2015.7164%2019.0972ZM8.59219%2019.0995L6.79883%2019.0995L6.79883%2020.9983L8.59219%2020.9983C9.32695%2020.9983%209.79141%2020.7464%209.79141%2020.0362C9.79141%2019.4573%209.43555%2019.0995%208.59219%2019.0995L8.59219%2019.0995Z'%20fill='rgb(255,29,29)'%20fill-rule='nonzero'%20/%3e%3cpath%20id='矢量%20513'%20d='M0.767578%2016.7681L0.767578%2024.3681C0.767578%2024.7841%200.927344%2025.1681%201.21562%2025.456C1.4875%2025.7442%201.8875%2025.904%202.2875%2025.904L29.7117%2025.904C30.5438%2025.904%2031.2316%2025.2321%2031.2316%2024.3841L31.2316%2016.7681L0.767578%2016.7681ZM8.72617%2022.3454L6.79844%2022.3454L6.79844%2024.9103L5.05469%2024.9103L5.05469%2017.7618L8.75352%2017.7618C10.4156%2017.7618%2011.5207%2018.6021%2011.5207%2020.0087C11.5207%2021.4153%2010.4797%2022.3454%208.72617%2022.3454L8.72617%2022.3454ZM15.9223%2024.9103L12.7277%2024.9103L12.7277%2017.7618L15.959%2017.7618C18.3676%2017.7618%2019.6855%2019.3251%2019.6855%2021.211C19.6855%2023.4993%2018.0027%2024.9103%2015.9223%2024.9103ZM26.9953%2019.1419L22.8473%2019.1419L22.8473%2020.7677L26.7164%2020.7677L26.7164%2022.1579L22.8473%2022.1579L22.8473%2024.9099L21.1125%2024.9099L21.1125%2017.7614L26.9953%2017.7614L26.9953%2019.1415L26.9953%2019.1419Z'%20fill='rgb(239,67,53)'%20fill-rule='nonzero'%20/%3e%3cpath%20id='矢量%20514'%20d='M8.75313%2017.7617L5.05469%2017.7617L5.05469%2024.9102L6.79844%2024.9102L6.79844%2022.3453L8.72617%2022.3453C10.4797%2022.3453%2011.5207%2021.4703%2011.5207%2020.0086C11.5207%2018.5469%2010.4156%2017.7617%208.75352%2017.7617L8.75313%2017.7617ZM8.59141%2020.9984L6.79805%2020.9984L6.79805%2019.0996L8.59141%2019.0996C9.43477%2019.0996%209.79063%2019.4574%209.79063%2020.0363C9.79063%2020.7461%209.32578%2020.9984%208.59141%2020.9984L8.59141%2020.9984ZM15.959%2017.7617L12.7277%2017.7617L12.7277%2024.9102L15.9223%2024.9102C18.0027%2024.9102%2019.6855%2023.4992%2019.6855%2021.2109C19.6855%2019.325%2018.368%2017.7617%2015.959%2017.7617ZM15.6934%2023.5656L14.4621%2023.5656L14.4621%2019.0973L15.7156%2019.0973C17.1559%2019.1152%2017.8477%2019.9355%2017.8477%2021.2578C17.8477%2022.7777%2017.0918%2023.5656%2015.6934%2023.5656ZM21.1125%2024.9102L22.8473%2024.9102L22.8473%2022.1582L26.7164%2022.1582L26.7164%2020.768L22.8473%2020.768L22.8473%2019.1422L26.9953%2019.1422L26.9953%2017.7617L21.1125%2017.7617L21.1125%2024.9102Z'%20fill='rgb(255,255,255)'%20fill-rule='nonzero'%20/%3e%3c/svg%3e" alt="" width="32" height="32" />
             <span class="d-item__name">{$vo.title}</span>