:root{--color-black: #0B0C10;--color-black-gray: #1F2833;--color-gray: #C5C6C7;--color-text: #66FCF1;--color-blue-dark: #45A29E;--font: "Montserrat", sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0}body{font-family:var(--font);text-rendering:optimizeLegibility;background-color:transparent}.app-background{position:fixed;top:0;left:0;width:100%;height:100vh;z-index:-1;overflow:hidden}.app-background video{width:100%;height:100%;object-fit:cover}.app-background:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;z-index:0}.back-to-top-btn[data-v-bc9321e3]{position:fixed;bottom:30px;right:30px;background-color:var(--color-gray);color:#fff;border:none;border-radius:50%;width:50px;height:50px;font-size:24px;line-height:50px;text-align:center;cursor:pointer;box-shadow:0 4px 8px #0000004d;z-index:1000;transition:background-color .3s ease;display:flex;align-items:center;justify-content:center}.back-to-top-btn img[data-v-bc9321e3]{width:25px;height:25px}.back-to-top-btn[data-v-bc9321e3]:hover{background-color:var(--color-text)}.fade-enter-active[data-v-bc9321e3],.fade-leave-active[data-v-bc9321e3]{transition:opacity .5s ease}.fade-enter-from[data-v-bc9321e3],.fade-leave-to[data-v-bc9321e3]{opacity:0}