body{margin:0;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.custom-scrollbar::-webkit-scrollbar{width:6px}.custom-scrollbar::-webkit-scrollbar-track{background:transparent}.custom-scrollbar::-webkit-scrollbar-thumb{background:#e2e8f0;border-radius:10px}.dark .custom-scrollbar::-webkit-scrollbar-thumb{background:#1e293b}.custom-scrollbar::-webkit-scrollbar-thumb:hover{background:#cbd5e1}.iq-test-session.iq-assessment-ui{--iq-bg: #e4e4e7;--iq-surface: #f4f4f5;--iq-paper: #ffffff;--iq-border: #d4d4d8;--iq-border-strong: #a1a1aa;--iq-ink: #18181b;--iq-muted: #52525b;--iq-faint: #71717a;--iq-progress-track: #d4d4d8;--iq-progress-fill: #27272a;min-height:100vh;background-color:var(--iq-bg);font-family:IBM Plex Sans,Inter,system-ui,sans-serif;letter-spacing:-.015em}.dark .iq-test-session.iq-assessment-ui{--iq-bg: #09090b;--iq-surface: #0c0c0e;--iq-paper: #18181b;--iq-border: #3f3f46;--iq-border-strong: #52525b;--iq-ink: #fafafa;--iq-muted: #a1a1aa;--iq-faint: #71717a;--iq-progress-track: #3f3f46;--iq-progress-fill: #e4e4e7}.iq-test-session .iq-matrix-frame{margin-left:auto;margin-right:auto;max-width:min(100%,30rem);padding:1.25rem 1.5rem 1.5rem;background:var(--iq-paper);border:1px solid var(--iq-border-strong);border-radius:2px;box-shadow:inset 0 1px #ffffffd9}.dark .iq-test-session .iq-matrix-frame{box-shadow:inset 0 1px #ffffff0a}.iq-test-session .iq-matrix-svg{display:block;width:100%;height:auto;margin:0 auto;filter:none}.dark .iq-test-session .iq-matrix-svg{filter:none}.iq-test-session .iq-stimulus-panel{background:var(--iq-surface);border:none;box-shadow:none}.iq-test-session .iq-assessment-topbar{border-bottom:1px solid var(--iq-border);background:var(--iq-paper)}.iq-test-session .iq-assessment-sheet{background:var(--iq-paper);border:1px solid var(--iq-border);border-radius:2px;box-shadow:0 1px 2px #0000000a,0 4px 24px #0000000f}.dark .iq-test-session .iq-assessment-sheet{box-shadow:0 4px 28px #00000073}.iq-test-session .iq-answers-panel{background:var(--iq-surface);border-top:1px solid var(--iq-border)}.iq-test-session .iq-option-btn{min-height:6.25rem;border-width:1px;border-style:solid;border-color:var(--iq-border);border-radius:2px;background:var(--iq-paper);color:var(--iq-ink);box-shadow:none;transition:border-color .15s ease,background-color .15s ease,box-shadow .15s ease}.iq-test-session .iq-option-btn:hover{border-color:var(--iq-border-strong);background:var(--iq-surface);box-shadow:0 0 0 1px var(--iq-border-strong)}.iq-test-session .iq-option-btn:focus-visible{outline:none;box-shadow:0 0 0 2px var(--iq-paper),0 0 0 4px var(--iq-ink)}.iq-test-session .iq-option-letter{font-family:IBM Plex Sans,ui-monospace,monospace;font-weight:600;font-size:.75rem;letter-spacing:.08em;color:var(--iq-muted);border:1px solid var(--iq-border);background:var(--iq-surface);border-radius:2px}.iq-test-session .iq-option-btn:hover .iq-option-letter{color:var(--iq-ink);border-color:var(--iq-border-strong)}.iq-test-session .iq-option-btn .iq-option-svg-host{width:100%;max-width:8rem;height:8rem;margin-left:auto;margin-right:auto}.iq-test-session .iq-option-svg-host svg.iq-cell-svg{width:100%;height:100%;display:block}.iq-test-session .iq-timer-box{font-family:ui-monospace,Cascadia Code,IBM Plex Mono,monospace;font-variant-numeric:tabular-nums;letter-spacing:.02em}