.index-page{width:100vw;height:100vh;min-width:100vw;min-height:100vh;overflow:auto;scroll-behavior:smooth;scrollbar-width:none;scroll-snap-type:y mandatory}.index-page::-webkit-scrollbar{display:none}.index-sub-page{width:100vw;height:100vh;min-width:100vw;min-height:100vh;scroll-snap-align:start;scroll-snap-stop:always;display:flex;flex-direction:column}.index-sub-page-arrow{flex:0 0 10em;height:10em;display:flex;align-items:center;justify-content:center;position:relative}.index-sub-page-up-arrow{position:absolute;bottom:0;left:50%;transform:translate(-50%) scale(1.2);opacity:1;animation:arrow-up 3s infinite}@keyframes arrow-up{to{opacity:0;bottom:80%}}.index-sub-page-down-arrow{position:absolute;top:0;left:50%;transform:translate(-50%) scale(1.2);opacity:1;animation:arrow-down 3s infinite}@keyframes arrow-down{to{opacity:0;top:80%}}.index-sub-page-content{flex:1 1 auto;display:flex;align-items:center;justify-content:center}:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{overflow-x:hidden}