:root{--stu-bg-mode:light}html[data-stu-theme=light] .sh-topbar{background:rgba(0,0,0,.1)}html[data-stu-theme=light] .sh-bg-base{background:radial-gradient(1200px 700px at 15% 10%,hsla(0,0%,100%,.25),transparent 55%),radial-gradient(900px 520px at 85% 15%,hsla(0,0%,100%,.18),transparent 58%),linear-gradient(135deg,#1e58fc,#00c2ff)}