:root{color-scheme:light}body{background:#f7f7ff;color:#20264a}.topbar{background:#f7f7ff}.brand{color:#20264a}.brand b{color:#6a54e8}.brand-mark{background:#ff6e81;box-shadow:3px 3px 0 #e6dfff}.top-note{color:#797d9a}.hero{background:#252b79}.lesson-art{background:#353ca0}.art-grid{background-image:linear-gradient(#fff2 1px,transparent 1px),linear-gradient(90deg,#fff2 1px,transparent 1px)}.eyebrow{color:#d7d3ff}.dot{background:#ffdc6b}.intro h1 em{color:#ffdc6b}.intro p{color:#e1e4ff}.hero-cta{background:#ffda70;color:#252a68;box-shadow:5px 5px 0 #191d5c}.art-caption{color:#e4e3ff}.art-star{color:#ffce78}.note{color:#283059;box-shadow:14px 16px 0 #14195b80}.note-math{background:#ffe584}.note-chem{background:#ffa0b4}.note-literature{background:#bde7e4}.workspace{background:#fff;border-color:#e7e5fb;box-shadow:0 18px 40px #3d31991a}.step{color:#6954e5}.badge{background:#efedff;color:#6252c6}.subject-strip{border-color:#ecebfa}.subject-strip>span{color:#747994}.subject-strip button{background:#f0eeff;border-color:#ddd8ff;color:#5d50b5}.subject-strip button:hover,.subject-strip button.active{background:#ddd6ff;border-color:#a99af4}select,textarea{background:#fcfcff;border-color:#dedff1;color:#283058}select:focus,textarea:focus{border-color:#7867ec;box-shadow:0 0 0 3px #7867ec25}button#submit{background:#6a55e8;color:#fff}button#submit:hover{background:#5541c9}.form-foot{color:#8b8eaa}.status{color:#bf5273}.result{border-color:#e7e5fb}.answer{color:#354067}.footnote{color:#8488a3}.footnote span{color:#ff7189}footer{border-color:#e5e4f3;color:#9193ab}