.tt-nb-worksheet{background:#ffffff;border:1px solid #f0debb;border-radius:16px;padding:28px 32px 20px;box-shadow:0 1px 2px rgba(0,0,0,.04)}.tt-nb-worksheet+.tt-nb-worksheet{margin-top:20px}.tt-nb-worksheet-header{display:flex;justify-content:space-between;font-size:15px;color:#1e2a4a;margin-bottom:14px}.tt-nb-worksheet-title{font-weight:700;font-size:22px;margin-bottom:6px;color:#1e2a4a}.tt-nb-worksheet-meta{font-size:14px;color:#6b7280;margin-bottom:18px}.tt-nb-worksheet-footer{margin-top:16px;font-size:11px;color:#999;text-align:right}.tt-nb-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:34px 26px}@media (max-width:640px){.tt-nb-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}.tt-nb-problem{break-inside:avoid;page-break-inside:avoid;display:flex;flex-direction:column;align-items:center}.tt-nb-problem-number{align-self:flex-start;font-size:13px;font-weight:600;color:#9ca3af;margin-bottom:4px;font-family:ui-sans-serif,system-ui,sans-serif}.tt-nb-svg{width:100%;max-width:210px;height:auto;display:block}.tt-nb-svg-text{font-family:Fredoka,ui-sans-serif,system-ui,sans-serif;font-weight:700;font-size:26px;fill:#1e2a4a}.tt-nb-svg-answer{fill:#3b5cd8}@media screen{.tt-nb-worksheet{max-width:850px;margin-inline:auto}}