.question-card[data-astro-cid-rkssh4ps]{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;margin-bottom:28px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}.question-card[data-astro-cid-rkssh4ps]:hover{border-color:var(--indigo-light);box-shadow:0 8px 28px #3742d01a}.q-header[data-astro-cid-rkssh4ps]{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:20px}.q-number[data-astro-cid-rkssh4ps]{font-family:Outfit,sans-serif;font-weight:700;font-size:1.5rem;color:var(--indigo)}.chip[data-astro-cid-rkssh4ps]{font-size:.75rem;font-weight:700;color:#fff;padding:.35rem .8rem;border-radius:999px;background:var(--indigo)}.chip[data-astro-cid-rkssh4ps].t-math{background:var(--math)}.chip[data-astro-cid-rkssh4ps].t-think{background:var(--think)}.chip[data-astro-cid-rkssh4ps].t-reading{background:var(--reading)}.chip[data-astro-cid-rkssh4ps].t-abstract{background:var(--purple)}.difficulty-badge[data-astro-cid-rkssh4ps]{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;padding:.25rem .65rem;border-radius:999px;background:var(--diff-bg);color:var(--diff-text)}.q-stem[data-astro-cid-rkssh4ps]{white-space:pre-line;font-size:1.05rem;line-height:1.7;margin:0 0 24px;color:var(--text)}.opts[data-astro-cid-rkssh4ps]{list-style:none;padding:0;margin:0 0 20px;display:grid;gap:10px}.opt[data-astro-cid-rkssh4ps]{display:flex;align-items:flex-start;gap:14px;background:var(--surface-2);color:var(--text);border:1.5px solid var(--border);border-radius:var(--radius);padding:14px 16px;font:inherit;font-size:.98rem;line-height:1.5;cursor:pointer;transition:all .15s ease}.opt[data-astro-cid-rkssh4ps]:hover:not(:disabled){border-color:var(--indigo-light);background:color-mix(in srgb,var(--indigo) 4%,var(--surface-2))}.opt-letter[data-astro-cid-rkssh4ps]{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--surface);border:1.5px solid var(--border);font-size:.85rem;font-weight:700;color:var(--text-2)}.opt[data-astro-cid-rkssh4ps].is-right{border-color:var(--reading);background:color-mix(in srgb,var(--reading) 12%,var(--surface))}.opt[data-astro-cid-rkssh4ps].is-wrong{border-color:#e0566a;background:color-mix(in srgb,#E0566A 10%,var(--surface))}.opt[data-astro-cid-rkssh4ps].is-right:after,.opt[data-astro-cid-rkssh4ps].is-wrong:after{margin-left:auto;align-self:center;font-weight:700;font-size:1.1rem}.opt[data-astro-cid-rkssh4ps].is-right:after{content:"✓";color:var(--reading)}.opt[data-astro-cid-rkssh4ps].is-wrong:after{content:"✗";color:#e0566a}.opt[data-astro-cid-rkssh4ps]:disabled{cursor:default;opacity:1}.explanation[data-astro-cid-rkssh4ps]{margin-top:20px;padding:18px 20px;background:var(--surface-2);border-radius:var(--radius);border-left:4px solid var(--indigo);animation:slideDown .3s cubic-bezier(.16,1,.3,1)}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.explanation-title[data-astro-cid-rkssh4ps]{display:flex;align-items:center;gap:8px;margin:0 0 10px;font-weight:700;color:var(--text)}.explanation-title[data-astro-cid-rkssh4ps] svg[data-astro-cid-rkssh4ps]{width:20px;height:20px;fill:var(--indigo)}.explanation-body[data-astro-cid-rkssh4ps]{margin:0;font-size:.95rem;line-height:1.65;color:var(--text-2)}@media print{.question-card[data-astro-cid-rkssh4ps]{box-shadow:none;border-color:#ccc}.opt[data-astro-cid-rkssh4ps]{border-color:#ccc}.explanation[data-astro-cid-rkssh4ps]{display:none!important}}.answer-key[data-astro-cid-bm2vh4fy]{display:none}@media print{.answer-key[data-astro-cid-bm2vh4fy]{display:block;break-before:page;page-break-before:always}.answer-key-title[data-astro-cid-bm2vh4fy]{font-size:1.5rem;margin:0 0 6px;color:#3742d0!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}.answer-key-note[data-astro-cid-bm2vh4fy]{margin:0 0 18px;font-size:10pt;color:#444;padding-bottom:12px;border-bottom:2px solid #3742D0}.answer-key-list[data-astro-cid-bm2vh4fy]{margin:0;padding-left:1.9em}.answer-key-item[data-astro-cid-bm2vh4fy]{margin-bottom:12px;padding-bottom:12px;border-bottom:1px solid #ddd;break-inside:avoid;page-break-inside:avoid}.answer-key-answer[data-astro-cid-bm2vh4fy]{margin:0 0 4px;font-size:10.5pt}.answer-key-answer[data-astro-cid-bm2vh4fy] strong[data-astro-cid-bm2vh4fy]{color:#3742d0!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}.answer-key-topic[data-astro-cid-bm2vh4fy]{float:right;font-size:8.5pt;color:#666}.answer-key-why[data-astro-cid-bm2vh4fy]{margin:0;font-size:9.5pt;line-height:1.45;color:#333}}