.main-gradient[data-v-72ffddfe]{background:radial-gradient(50% 50% at 50% 50%,#fff 0,#fff0)}.foreword-top-bottom-gradient[data-v-72ffddfe]{background:linear-gradient(90deg,#fff -12.51%,#ffffff7d -1.19%,#fff0 84.91%)}.appendix-2-gradient[data-v-72ffddfe],.chapter-1-gradient[data-v-72ffddfe],.chapter-2-gradient[data-v-72ffddfe],.chapter-3-gradient[data-v-72ffddfe],.foreword-center-gradient[data-v-72ffddfe]{background:radial-gradient(50% 50% at 50% 50%,#71c8e5 0,#71c8e500)}.liquid-glass[data-v-72ffddfe]{background:none;border:none;box-shadow:0 6px 24px #0003;cursor:pointer;isolation:isolate;position:relative;text-decoration:none}.liquid-glass[data-v-72ffddfe]:focus{outline:none}.liquid-glass[data-v-72ffddfe]:before{background-color:#e6f7ff00;box-shadow:inset 0 0 0 -20px #000;z-index:0}.liquid-glass[data-v-72ffddfe]:after,.liquid-glass[data-v-72ffddfe]:before{border-radius:20px;content:"";top:0;right:0;bottom:0;left:0;position:absolute}.liquid-glass[data-v-72ffddfe]:after{backdrop-filter:blur(9px);-webkit-backdrop-filter:blur(9px);filter:url(#glass-distortion);-webkit-filter:url(#glass-distortion);z-index:-1}.gradient[data-v-23687b1d]{background:radial-gradient(50% 50% at 50% 50%,#fff 0,#fff0)}.gradient-appendix2[data-v-a91f7354],.gradient-chapter1[data-v-a91f7354]{background:radial-gradient(50% 50% at 50% 50%,#71c8e5 0,#71c8e500)}