.student-shell{--student-ink:#101838;--student-muted:#596780;--student-blue:#3157ff;--student-blue-soft:#eef2ff;--student-mint:#35caa3;--student-paper:#f5f7fb;--student-line:#d9e0ec;background:linear-gradient(rgba(49,87,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(49,87,255,.035) 1px,transparent 1px),var(--student-paper);background-size:32px 32px;color:var(--student-ink);min-height:100vh}.student-shell *,.student-shell :after,.student-shell :before{box-sizing:border-box}.student-shell button,.student-shell input,.student-shell textarea{font:inherit}.student-shell a,.student-shell button{-webkit-tap-highlight-color:transparent}.student-shell [data-student-focus-target]:focus-visible,.student-shell a:focus-visible,.student-shell button:focus-visible,.student-shell input:focus-visible,.student-shell textarea:focus-visible{outline:3px solid color-mix(in srgb,var(--student-blue) 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