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16px;overflow-x:hidden}.mobile-nav-toggle{display:flex}.app:not(.fullbleed) .sidebar{display:flex!important;position:fixed;top:0;left:0;bottom:0;width:280px;z-index:100;transform:translateX(-100%);transition:transform .25s cubic-bezier(.2,.8,.2,1);padding:24px 22px!important;align-items:stretch!important;background:var(--surface);box-shadow:0 8px 32px rgba(0,0,0,.12)}.app:not(.fullbleed).mobile-nav-open .sidebar{transform:translateX(0)}.app:not(.fullbleed).mobile-nav-open .mobile-nav-backdrop{display:block;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:95;animation:fade-in .2s}.app:not(.fullbleed) .sidebar:not(.collapsed) .logo span:last-child,.app:not(.fullbleed) .sidebar:not(.collapsed) .nav,.app:not(.fullbleed) .sidebar:not(.collapsed) .sidebar-foot{display:flex!important}.sidebar-toggle{display:none!important}.top-header{flex-direction:column;align-items:stretch;gap:14px}.top-header h1{font-size:28px}.top-header .row.gap-3{flex-wrap:wrap;gap:8px}.metrics-grid{grid-template-columns:repeat(2,1fr)!important}.metric .value{font-size:32px}.metric .value .sub{font-size:16px}.tiles-grid{grid-template-columns:1fr!important}.cke-header{padding:10px 14px;flex-wrap:wrap;gap:8px}.cke-header-source{font-size:10px}.prob-body{font-size:17px}.mathkb{gap:4px;padding:8px}.mathkb button{font-size:15px;padding:10px 0;min-width:0}.mathkb button.mathkb-big{font-size:19px}.mathkb button.mathkb-tex{font-size:13px;padding:8px 0}.mathkb button.mathkb-tex .katex{font-size:.95em}.opt-list{grid-template-columns:1fr!important}.answer-input-row{flex-wrap:wrap}.onb-side{padding:24px 20px}.onb-side h1{font-size:26px}.onb-main{padding:24px 20px 48px}.onb-main h2{font-size:22px}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@media (max-width:400px){.mathkb{gap:3px;padding:6px}.mathkb button{font-size:13px;padding:8px 0}.mathkb button.mathkb-big{font-size:17px}.mathkb button.mathkb-tex{font-size:11px;padding:6px 0}}