.static-math-directory{box-sizing:border-box;max-width:1120px;margin:32px auto;padding:24px;background:#fffdf6;border:1px solid #d9e5df;border-radius:16px;color:#24484b;line-height:1.7}.static-math-directory h2{font-size:1.3rem;margin:0 0 12px}.static-math-directory h2:not(:first-child){margin-top:24px}.static-math-directory a{color:#176c60;text-decoration:underline;text-underline-offset:3px}.static-grade-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:20px 0}.static-grade-grid details{padding:12px;border:1px solid #d9e5df;border-radius:8px;align-self:start}.static-grade-grid summary{cursor:pointer;font-weight:700}.static-grade-grid ul{padding-left:20px}.static-grade-grid li{margin:6px 0}@media(max-width:640px){.static-math-directory{margin:16px 10px;padding:18px}.static-grade-grid{grid-template-columns:1fr}}@media print{.static-math-directory{display:none!important}}