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ease}.young-quiz__choice:hover{border-color:var(--clr-primary);background:#b43a3a14}.young-quiz__choice:focus-visible{outline:3px solid rgba(180,58,58,.35);outline-offset:2px}.young-quiz__choice.is-correct{border-color:var(--clr-success, #3b873e);background:#3b873e1f;color:var(--clr-success, #3b873e)}.young-quiz__choice.is-incorrect{border-color:var(--clr-primary);background:#b43a3a1f}.young-quiz__choice.is-disabled{opacity:.65;cursor:not-allowed}.young-quiz__choice-item--complete{padding:.75rem 1rem;border:2px dashed var(--clr-border);border-radius:10px;font-style:italic;color:var(--clr-text-muted);background:#fff9}.young-quiz__feedback{min-height:1.2em;font-size:.95rem;font-weight:600;color:var(--clr-text, #2a2a2a)}.young-quiz__actions{display:flex;flex-wrap:wrap;gap:.75rem}.young-quiz__button{padding:.6rem 1.2rem;border-radius:999px;border:2px solid var(--clr-primary);background:var(--clr-primary);color:#fff;font-weight:700;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease}.young-quiz__button:hover{background:var(--clr-primary-light);border-color:var(--clr-primary-light)}.young-quiz__button--secondary{background:#fff;color:var(--clr-primary)}.young-quiz__button--secondary:hover{background:#b43a3a1a}.young-quiz__button--ghost{background:#ffffffa6;color:var(--clr-primary)}.young-quiz__score{font-weight:600}.young-quiz__print-toggle{border:1px solid var(--clr-border);border-radius:8px;background:#fff;padding:.85rem 1rem}.young-quiz__print-toggle>summary{font-weight:600;cursor:pointer}.young-quiz__print{margin-top:1rem;display:grid;gap:1rem}.young-quiz__print-list,.young-quiz__answers{margin:0;padding-left:1.5rem;display:grid;gap:.4rem}.young-quiz__print-number{font-weight:700;margin-right:.35rem}@media print{.young-quiz__print-toggle{border:none;padding:0}.young-quiz__print-toggle>summary{display:none}.young-quiz__print{display:block}}.primary-nav{scrollbar-width:thin}.primary-nav::-webkit-scrollbar{height:6px}.primary-nav::-webkit-scrollbar-thumb{background:#ffffff40;border-radius:999px}.primary-nav::-webkit-scrollbar-track{background:transparent}.back-to-top{position:fixed;right:clamp(1rem,2vw,1.5rem);bottom:clamp(1rem,2vw,1.5rem);z-index:90;width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border:2px solid rgba(212,165,116,.75);border-radius:999px;background:var(--clr-primary);color:var(--clr-bg);box-shadow:0 8px 20px #0f172a33,0 2px 6px #0f172a26;cursor:pointer;opacity:0;pointer-events:none;transform:translateY(8px);transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease,opacity .2s ease,transform .2s ease}.back-to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}.back-to-top:hover,.back-to-top:focus-visible{background:var(--clr-memorial);border-color:var(--clr-accent);box-shadow:0 10px 24px #0f172a3d,0 3px 8px #0f172a2e}.back-to-top:focus-visible{outline:3px solid rgba(212,165,116,.45);outline-offset:3px}.back-to-top__icon{position:relative;width:18px;height:20px}.back-to-top__icon:before{content:"";position:absolute;left:50%;bottom:2px;width:3px;height:16px;border-radius:999px;background:currentColor;transform:translate(-50%)}.back-to-top__icon:after{content:"";position:absolute;top:2px;left:50%;width:12px;height:12px;border-top:3px solid currentColor;border-left:3px solid currentColor;transform:translate(-50%) rotate(45deg)}@media (max-width: 720px){.back-to-top{width:42px;height:42px;right:1rem;bottom:1rem}}@media print{.back-to-top{display:none}}.not-found{display:flex;flex-direction:column;gap:2.5rem;margin:1rem 0 3rem}.not-found__hero{background:linear-gradient(135deg,#1e2935,#462d1f);color:var(--clr-surface);padding:clamp(2rem,4vw,3rem);border-radius:12px;border:3px solid rgba(255,255,255,.12);box-shadow:0 12px 28px #00000038,inset 0 0 0 2px #ffffff0d}.not-found__hero h1{color:#fff;margin-top:.35rem;border:none;text-shadow:0 2px 6px rgba(0,0,0,.28)}.not-found__eyebrow{text-transform:uppercase;letter-spacing:.24em;font-size:.85rem;color:#ffffffc7;margin:0 0 .4rem}.not-found__lead{color:#f3ede2;max-width:60ch;font-size:clamp(1rem,1.1rem,1.15rem)}.not-found__actions{display:flex;gap:.75rem;flex-wrap:wrap;margin:1.5rem 0 .5rem}.not-found__hint{margin:.4rem 0 0;color:#ffffffc7;font-size:.95rem}.not-found__panel{background:var(--clr-surface-alt);border:2px solid var(--clr-border);border-left:6px solid var(--clr-primary);border-radius:10px;padding:clamp(1.5rem,4vw,2rem);box-shadow:0 8px 18px #0000001f}.not-found__panel-header{display:flex;gap:1rem;align-items:center;justify-content:space-between;flex-wrap:wrap}.not-found__panel-header h2{margin:.1rem 0 0}.not-found__support{margin:0;color:var(--clr-text-light);max-width:32ch}.not-found__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem;margin-top:1.25rem}.not-found__card{--tile-bg: var(--clr-surface);--tile-bg-hover: #fffaf0;--tile-border: var(--clr-border);--tile-border-hover: var(--clr-border-dark);--tile-heading-offset: .1rem;--tile-min-height: 170px;position:relative;overflow:visible;padding-top:1.25rem}.not-found__card.is-highlighted{--tile-bg: linear-gradient(135deg, #fffaf0 0%, #f5e9d6 100%);--tile-border: var(--clr-primary);--tile-border-hover: #5f0f0f;box-shadow:0 8px 20px #00000024,inset 0 0 0 1px #fff9}.not-found__card p{margin:.25rem 0 0;color:var(--clr-text-light)}.not-found__badge{position:absolute;top:12px;right:12px;background:var(--clr-accent);color:var(--clr-text);border-radius:999px;padding:.25rem .9rem;font-size:.85rem;letter-spacing:.05em;font-weight:700;box-shadow:0 6px 14px #00000029}.not-found__help{display:grid}.not-found__help-card{padding:clamp(1.5rem,3vw,2rem);background:var(--clr-surface);border:2px dashed var(--clr-border);border-radius:12px;box-shadow:0 6px 16px #00000014}.not-found__help-card h2{margin-top:0}.not-found__help-card p{margin:0 0 1.25rem;color:var(--clr-text-muted)}.not-found__help-actions{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}@media (max-width: 720px){.not-found__hero{padding:1.75rem}.not-found__panel{padding:1.25rem}}