.nu-road{--sky:#d6e8ee;--ink:#1c1917;--deep:#1c4a2a;--muted:#6b645e;--line:#e7e5e4;--edge:#d6d1ca;--paper:#f5f5f4;--leaf:#3fa750;--leaf-deep:#2f8040;--leaf-edge:#256b36;--leaf-soft:#e6f4e8;--gold:#f5a524;--gold-deep:#c47f0e;--gold-edge:#9a6208;--gold-soft:#fff3cf;--wrong:#b91c1c;--wrong-bg:#fee2e2;--warn:#a16207;z-index:3;background:var(--sky);color:var(--ink);font-variant-numeric:tabular-nums;-webkit-tap-highlight-color:transparent;flex-direction:column;font-family:system-ui,Segoe UI,Roboto,sans-serif;display:flex;position:fixed;inset:0;overflow:hidden}.nu-road *,.nu-road :before,.nu-road :after{box-sizing:border-box}body:has(.nu-road)>.lang-toggle{display:none}.nu-road-top{width:calc(100% - 16px);max-width:640px;padding:max(12px, env(safe-area-inset-top)) 12px 6px;flex:none;align-items:center;gap:10px;margin:0 auto;display:flex}.nu-road .nu-x{width:44px;height:44px;box-shadow:0 3px 0 var(--edge);color:var(--muted);cursor:pointer;background:#fff;border:0;border-radius:12px;flex:none;justify-content:center;align-items:center;padding:0;display:flex}.nu-road .nu-x:active{box-shadow:0 1px 0 var(--edge);transform:translateY(2px)}.nu-road .nu-quest{min-width:0;box-shadow:0 3px 0 var(--edge);background:#fff;border-radius:12px;flex:1;align-items:center;gap:3px;padding:7px 6px 7px 8px;display:flex}.nu-road .nu-quest i{background:var(--line);border-radius:3px;flex:1;min-width:3px;height:16px;box-shadow:inset 0 -4px #d6d3d1}.nu-road .nu-quest i.first{background:var(--leaf);box-shadow:inset 0 -4px 0 var(--leaf-edge)}.nu-road .nu-quest i.retry{box-shadow:inset 0 -4px 0 var(--warn);background:#fde68a}.nu-road .nu-quest i.cur{box-shadow:inset 0 0 0 3px var(--leaf);background:#fff;animation:1s steps(2,end) infinite nu-road-blink}.nu-road .nu-quest-flag{flex:none;margin-left:2px;display:inline-flex}.nu-road .nu-q-count{text-align:right;flex:none;min-width:52px;font-size:17px;font-weight:900}@keyframes nu-road-blink{50%{opacity:.35}}.nu-road-chiprow{flex:none;align-items:center;gap:8px;width:calc(100% - 16px);max-width:640px;min-height:44px;margin:0 auto;padding:2px 14px 6px;display:flex}.nu-road .nu-q-chip{background:var(--leaf-soft);color:var(--leaf-deep);border-radius:9px;flex:none;align-items:center;gap:7px;padding:5px 10px;font-size:13px;font-weight:800;display:inline-flex}.nu-road .nu-q-chip-dot{background:var(--leaf);width:10px;height:10px;box-shadow:inset 0 -3px 0 var(--leaf-edge);border-radius:2px}.nu-road-tools{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:6px 8px;min-width:0;margin-left:auto;display:flex}.nu-road-chiprow{flex-wrap:wrap;row-gap:4px}.nu-road .nu-test-skips{flex:none;gap:6px;display:inline-flex}@media (width<=479px){.nu-road .nu-road-tools:has(>.nu-test-skips){display:contents}.nu-road .nu-road-chiprow:has(.nu-test-skips) .nu-q-chip{margin-right:auto}.nu-road .nu-test-skips{order:9;margin-left:auto}}.nu-road-body{width:calc(100% - 16px);max-width:640px;min-height:0;box-shadow:0 -2px 0 var(--edge);background:#fff;border-radius:20px 20px 0 0;flex:1;margin:0 auto;position:relative;overflow-y:auto}.nu-road .screen{min-height:100%;position:relative}.nu-road .practice-header,.nu-road .progress-bar-track,.nu-road .practice-counter,.nu-road .phase-progress,.nu-road .phase-progress-count{display:none}.nu-road .session-speak-button,.nu-road .session-video-button{width:44px;height:44px;color:var(--leaf-deep);box-shadow:0 3px 0 var(--edge);cursor:pointer;background:#fff;border:0;border-radius:12px;place-items:center;display:grid}.nu-road .session-speak-button:active,.nu-road .session-video-button:active{box-shadow:0 1px 0 var(--edge);transform:translateY(2px)}.nu-road .session-speak-button.voice-missing{color:var(--muted);box-shadow:none;background:#fff9}.nu-road .lang-toggle{z-index:auto;box-shadow:0 3px 0 var(--edge);background:#fff;border:0;border-radius:12px;margin:0;padding:2px;position:static}.nu-road .lang-toggle-button{min-height:38px;padding:3px 7px}.nu-road .lang-toggle-label{display:none}.nu-road .road-session-clock{box-shadow:0 3px 0 var(--edge);color:var(--ink);background:#fff;border-radius:12px;margin:0;padding:8px 12px;font-size:17px;font-weight:900}.nu-road .road-clock-low{background:var(--wrong-bg);color:var(--wrong)}.nu-road .road-session-finish{background:var(--gold);color:#3b2503;box-shadow:0 3px 0 var(--gold-edge);cursor:pointer;border:0;border-radius:12px;padding:9px 12px;font-size:14px;font-weight:900}.nu-road .diagnostic-skip-topic{color:var(--muted);opacity:.6;cursor:pointer;background:0 0;border:1px dashed #b9b2a8;border-radius:8px;padding:4px 6px;font-size:11px;font-weight:700}.nu-road .number-pad:before{content:none;display:none}.nu-road .number-pad{background:#fff;border-top:0;grid-template-columns:repeat(3,1fr);justify-content:stretch;gap:7px;width:100%;max-width:360px;margin:0 auto;padding:3px 12px 10px}.nu-road .number-pad button{border:2px solid var(--edge);min-height:46px;box-shadow:0 4px 0 var(--edge);color:var(--ink);background:#fff;border-radius:12px;font-size:24px;font-weight:900;transition:transform 60ms,box-shadow 60ms}.nu-road .number-pad button:active:not(:disabled){box-shadow:0 1px 0 var(--edge);background:#fff;transform:translateY(4px)}.nu-road .number-pad .submit-key{background:var(--leaf);border-color:var(--leaf-deep);box-shadow:0 5px 0 var(--leaf-edge);color:#fff}.nu-road .number-pad .submit-key:active:not(:disabled){box-shadow:0 1px 0 var(--leaf-edge);background:var(--leaf)}.nu-road .number-pad .submit-key:disabled{color:#fff;background:#cfd8cf;border-color:#b9c4b9;box-shadow:0 5px #b9c4b9}.nu-road .number-pad{gap:4px 6px;max-width:360px;padding:2px 10px 5px}.nu-road .number-pad button{min-height:44px;box-shadow:0 3px 0 var(--edge);border-radius:11px;font-size:22px}.nu-road .number-pad .submit-key{box-shadow:0 3px 0 var(--leaf-edge)}.nu-road .number-pad .submit-key:disabled{box-shadow:0 3px #b9c4b9}.nu-road .number-pad:has(>[aria-label=decimal\ point]){grid-template-columns:repeat(3,minmax(0,1fr)) minmax(56px,.85fr)}.nu-road .number-pad:has(>[aria-label=decimal\ point]) .submit-key{grid-area:1/4/span 4;font-size:28px}.nu-road .answer-confirm-backdrop{z-index:80;background:#1c191780}.nu-road .answer-confirm-dialog{border:2px solid var(--edge);max-width:360px;box-shadow:0 6px 0 var(--edge), 0 18px 40px #00000040;background:#fff;border-radius:22px;padding:22px 20px 20px}.nu-road .answer-confirm-question{color:var(--muted);font-weight:700}.nu-road .answer-confirm-answer,.nu-road .div-confirm-rem{color:var(--deep);font-weight:900}.nu-road .answer-confirm-body{color:var(--ink);font-weight:800}.nu-road .answer-confirm-actions{gap:12px}.nu-road .answer-confirm-actions button{cursor:pointer;border-radius:14px;min-height:58px;padding:10px 12px;font-size:19px;font-weight:900;transition:transform 60ms,box-shadow 60ms}.nu-road .answer-confirm-actions .answer-confirm-yes{background:var(--leaf);color:#fff;border:2px solid var(--leaf-deep);box-shadow:0 5px 0 var(--leaf-edge)}.nu-road .answer-confirm-actions .answer-confirm-change{background:var(--gold);color:#3b2503;border:2px solid var(--gold-deep);box-shadow:0 5px 0 var(--gold-edge)}.nu-road .answer-confirm-actions .answer-confirm-yes:active{box-shadow:0 1px 0 var(--leaf-edge);transform:translateY(4px)}.nu-road .answer-confirm-actions .answer-confirm-change:active{box-shadow:0 1px 0 var(--gold-edge);transform:translateY(4px)}.nu-road .wrong-sheet-scrim{z-index:80;background:#1c191773}.nu-road .wrong-sheet{border-radius:24px 24px 0 0;box-shadow:0 -5px #f5b5b5,0 -14px 30px #00000029}.nu-road .wrong-sheet-title{color:var(--wrong);font-weight:900}.nu-road .wrong-sheet-x{background:var(--wrong);color:#fff;border-radius:9px;box-shadow:0 3px #7f1414}.nu-road .wrong-sheet-you{background:var(--wrong-bg);color:var(--wrong);border:2px solid #f5b5b5;border-radius:16px;box-shadow:0 4px #f5b5b5}.nu-road .wrong-sheet-next{border:2px solid var(--leaf-deep);background:var(--leaf);color:#fff;box-shadow:0 5px 0 var(--leaf-edge);cursor:pointer;border-radius:16px;font-weight:900}.nu-road .wrong-sheet-next:active{box-shadow:0 1px 0 var(--leaf-edge);border-bottom-width:2px;transform:translateY(4px)}.nu-road .stuck-card{border:2px solid var(--edge);box-shadow:0 5px 0 var(--edge), 0 14px 32px #0003;z-index:70;border-radius:20px}.nu-road .stuck-card-actions button{border-radius:14px;min-height:54px;font-weight:900}.nu-road .stuck-card-actions .stuck-card-keep{background:var(--leaf);color:#fff;border:2px solid var(--leaf-deep);box-shadow:0 4px 0 var(--leaf-edge)}.nu-road .stuck-card-actions .stuck-card-next{background:var(--gold);color:#3b2503;box-shadow:0 4px 0 var(--gold-edge);border:2px solid var(--gold-deep)!important}@media (height<=640px){.nu-road-top{padding-top:6px}}.nu-root .nu-q-real-body .answer-confirm-backdrop{z-index:80;background:#1c191780}.nu-root .nu-q-real-body .answer-confirm-dialog{border:2px solid var(--edge);max-width:360px;box-shadow:0 6px 0 var(--edge), 0 18px 40px #00000040;background:#fff;border-radius:22px;padding:22px 20px 20px}.nu-root .nu-q-real-body .answer-confirm-answer,.nu-root .nu-q-real-body .div-confirm-rem{color:var(--deep);font-weight:900}.nu-root .nu-q-real-body .answer-confirm-actions button{cursor:pointer;border-radius:14px;min-height:58px;padding:10px 12px;font-size:19px;font-weight:900;transition:transform 60ms,box-shadow 60ms}.nu-root .nu-q-real-body .answer-confirm-actions .answer-confirm-yes{background:var(--leaf);color:#fff;border:2px solid var(--leaf-deep);box-shadow:0 5px 0 var(--leaf-edge)}.nu-root .nu-q-real-body .answer-confirm-actions .answer-confirm-change{background:var(--gold);color:#3b2503;border:2px solid var(--gold-deep);box-shadow:0 5px 0 var(--gold-edge)}.nu-root .nu-q-real-body .answer-confirm-actions .answer-confirm-yes:active{box-shadow:0 1px 0 var(--leaf-edge);transform:translateY(4px)}.nu-root .nu-q-real-body .answer-confirm-actions .answer-confirm-change:active{box-shadow:0 1px 0 var(--gold-edge);transform:translateY(4px)}.nu-root .nu-q-real-body .wrong-sheet-scrim{z-index:80}.nu-root .nu-q-real-body .wrong-sheet{border-radius:24px 24px 0 0;box-shadow:0 -5px #f5b5b5,0 -14px 30px #00000029}.nu-root .nu-q-real-body .wrong-sheet-you{border:2px solid #f5b5b5;box-shadow:0 4px #f5b5b5}.nu-root .nu-q-real-body .wrong-sheet-next{border:2px solid var(--leaf-deep);box-shadow:0 5px 0 var(--leaf-edge);cursor:pointer;border-radius:16px;font-weight:900}.nu-root .nu-q-real-body .wrong-sheet-next:active{box-shadow:0 1px 0 var(--leaf-edge);border-bottom-width:2px;transform:translateY(4px)}.nu-road-done{z-index:3}.nu-root .nu-done-body.has-details{justify-content:flex-start}.nu-root .nu-done-secondary{justify-content:center;gap:12px;margin-top:12px;display:flex}.nu-root .nu-done-secondary button{box-shadow:0 3px 0 var(--edge);color:var(--muted);cursor:pointer;background:#fff;border-radius:12px;padding:10px 18px;font-size:15px;font-weight:800}.nu-root .nu-done-secondary button:active{box-shadow:0 1px 0 var(--edge);transform:translateY(2px)}.nu-root .nu-done-details{flex-direction:column;align-items:center;gap:8px;width:100%;display:flex}.nu-root .nu-done-details-toggle{box-shadow:0 3px 0 var(--edge);color:var(--muted);cursor:pointer;background:#fff;border-radius:12px;padding:8px 16px;font-size:14px;font-weight:800}.nu-root .nu-stat-tap{font:inherit;cursor:pointer;border:none}.nu-root .nu-stat-tap[aria-expanded=true]{box-shadow:0 2px 0 var(--edge);transform:translateY(2px)}.nu-root .nu-stat-tap:focus-visible{outline:3px solid var(--leaf);outline-offset:2px}.nu-root .nu-done-details-body{width:100%;max-width:440px;box-shadow:0 4px 0 var(--edge);text-align:left;color:var(--ink);background:#fff;border-radius:16px;padding:12px}.nu-root .nu-done-details-body .round-summary-again{max-width:none;margin-top:0}.nu-road.nu-road-embedded{z-index:60}.nu-road-body.nu-road-body-tall{margin-top:8px}.nu-road-tools{gap:10px;padding-right:4px}.nu-road-body{padding-inline:6px}@media (width>=760px){.nu-road-top,.nu-road-chiprow,.nu-road-body{max-width:600px}.nu-road-chiprow{padding:4px 18px 8px}.nu-road-tools{gap:12px;padding-right:6px}.nu-road-body{padding-inline:14px}}