.pq{--pq-green: #1f8f4e;--pq-green-ink: #17703c;--pq-green-wash: #eef8f2;--pq-red: #d4351c;--pq-red-ink: #b42318;--pq-red-wash: #fdf0ee;position:relative;max-width:1000px;margin:0 auto;color:var(--ga-text)}.pq.is-protected{overflow:hidden;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}.pq-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--ga-space-6);padding-block-end:var(--ga-space-5);margin-block-end:var(--ga-space-5);border-bottom:1px solid var(--ga-border)}.pq-head-text{min-width:0}.pq-title{margin:0;font-size:var(--ga-text-3xl);line-height:1.2;font-weight:700;letter-spacing:-.015em}.pq-sub{margin:6px 0 0;font-size:var(--ga-text-md);color:var(--ga-fg2, var(--ga-muted))}.pq-note{margin:2px 0 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var(--ga-border);border-radius:var(--ga-r-full);background:var(--ga-surface);color:var(--ga-text);font:inherit;font-size:var(--ga-text-sm);font-weight:500;white-space:nowrap;cursor:pointer;transition:background-color .15s ease,border-color .15s ease,color .15s ease}.pq-chip:hover{background:var(--ga-hover)}.pq-chip:focus-visible{outline:2px solid var(--ga-text);outline-offset:2px}.pq-chip[aria-pressed=true]{background:var(--ga-text);border-color:var(--ga-text);color:var(--ga-bg)}.pq-chip-n{opacity:.55;font-variant-numeric:tabular-nums}.pq-filter-rule{width:1px;height:18px;margin:0 4px;background:var(--ga-border)}.pq-sec+.pq-sec{margin-block-start:var(--ga-space-8)}.pq-sec-title{margin:0 0 var(--ga-space-3);font-size:var(--ga-text-sm);font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ga-muted)}.pq-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}.pq-q{display:grid;grid-template-columns:minmax(0,1fr) 168px;grid-template-areas:"main keys" "x    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8%,var(--ga-surface))}.pq-tag.is-level,.pq-chip.is-level{flex:none}.pq-tag.is-easy{color:#17703c;background:#e8f5ee}.pq-tag.is-medium{color:#8a5300;background:#fdf1dc}.pq-tag.is-hard{color:#b42318;background:#fdecea}.pq-from{margin:-4px 0 10px;font-size:14px;line-height:1.3;color:var(--ga-muted)}.pq-stem{min-width:0;font-size:15px;line-height:1.6}.pq-stem-p{margin:0 0 6px}.pq-stem-p:last-child{margin-block-end:0}.pq-opts{display:grid;gap:var(--ga-space-2);margin-block-start:14px}.pq-opt{appearance:none;display:flex;align-items:center;gap:var(--ga-space-3);width:100%;min-height:48px;padding:10px 14px;border:1px solid var(--ga-border);border-radius:var(--ga-r-lg);background:var(--ga-surface);color:var(--ga-text);font:inherit;font-size:15px;line-height:1.45;text-align:left;cursor:pointer;-webkit-tap-highlight-color:transparent;transition:border-color .15s ease,background-color .15s ease}.pq-opt:hover:not(:disabled){border-color:color-mix(in srgb,var(--ga-text) 32%,transparent);background:var(--ga-hover)}.pq-opt:focus-visible{outline:2px solid var(--ga-text);outline-offset:2px}.pq-opt:disabled{cursor:default;color:var(--ga-text)}.pq-opt-l{flex:none;display:inline-grid;place-items:center;width:28px;height:28px;border:1px solid var(--ga-border);border-radius:var(--ga-r-full);font-size:14px;font-weight:600;color:var(--ga-muted)}.pq-opt-t{flex:1;min-width:0;overflow-wrap:anywhere}.pq-opt-tag{flex:none;font-size:14px;font-weight:600}.pq-opt.is-right,.pq-opt.is-key{border-color:var(--pq-green);background:var(--pq-green-wash)}.pq-opt.is-right .pq-opt-l,.pq-opt.is-key .pq-opt-l{border-color:var(--pq-green);background:var(--pq-green);color:#fff}.pq-opt.is-right .pq-opt-tag,.pq-opt.is-key .pq-opt-tag{color:var(--pq-green-ink)}.pq-opt.is-wrong{border-color:var(--pq-red);background:var(--pq-red-wash)}.pq-opt.is-wrong .pq-opt-l{border-color:var(--pq-red);background:var(--pq-red);color:#fff}.pq-opt.is-wrong .pq-opt-tag{color:var(--pq-red-ink)}.pq-q.is-right .pq-opt:not(.is-right):not(.is-key),.pq-q.is-wrong .pq-opt:not(.is-wrong):not(.is-key){color:var(--ga-fg2, var(--ga-muted))}.pq-keys{grid-area:keys;align-self:start;display:flex;flex-direction:column;gap:var(--ga-space-2)}.pq-key{--key-fs: 14px;width:100%;justify-content:center}.pq-key[aria-pressed=true]{--key-label: var(--pq-green-ink)}.pq-caret{transition:transform .2s ease}.pq-key.is-open .pq-caret{transform:rotate(180deg)}.pq-x{grid-area:x;display:grid;grid-template-rows:0fr;transition:grid-template-rows .25s ease}.pq-x.is-open{grid-template-rows:1fr}.pq-x-in{min-height:0;overflow:hidden}.pq-x-body{min-width:0;margin-block-start:18px;padding-block-start:18px;border-top:1px solid var(--ga-border)}.pq-x-key{display:flex;align-items:center;flex-wrap:wrap;gap:6px;margin:0 0 10px;font-size:15px;font-weight:600;color:var(--pq-green-ink)}.pq-x-tick{color:var(--pq-green)}.pq-x-dot{color:var(--ga-muted)}.pq-x-line{margin:0 0 6px;font-size:15px;line-height:1.65}.pq-fast{margin-block-start:var(--ga-space-4);padding:14px 16px;border:1px solid color-mix(in srgb,var(--pq-green) 24%,transparent);border-radius:var(--ga-r-lg);background:var(--pq-green-wash)}.pq-fast-h{margin:0 0 6px;font-size:14px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--pq-green-ink)}.pq-fast .pq-x-line:last-child{margin-block-end:0}.pq .katex-display{overflow-x:auto;overflow-y:hidden}.pq-empty{margin:var(--ga-space-6) 0;color:var(--ga-muted);font-size:var(--ga-text-md)}.pq.is-locked{min-height:620px;overflow:hidden}.pq-ghost{display:grid;gap:14px;filter:blur(1.5px)}.pq-ghost-card{display:grid;gap:10px;padding:22px 24px;border:1px solid var(--ga-border);border-radius:var(--ga-r-xl);background:var(--ga-surface)}.pq-ghost-line{display:block;height:10px;width:72%;border-radius:4px;background:#e6e6e6}.pq-ghost-line.is-long{width:94%}.pq-ghost-line.is-short{width:44%}.pq-ghost-line.is-opt{height:34px;width:100%;border-radius:var(--ga-r-lg);background:#f2f2f2}@media(prefers-reduced-motion:reduce){.pq-x,.pq-caret,.pq-opt,.pq-chip{transition:none}}@media print{.pq{display:none!important}}@media(max-width:640px){.pq-head{display:block;padding-block-end:var(--ga-space-4);margin-block-end:var(--ga-space-4)}.pq-title{font-size:22px}.pq-score,.pq-filter{display:none}.pq-sec+.pq-sec{margin-block-start:var(--ga-space-6)}.pq-list{gap:var(--ga-space-3)}.pq-q{grid-template-columns:minmax(0,1fr);grid-template-areas:"main" "keys" "x";padding:16px;border-radius:var(--ga-r-lg)}.pq-q-head{flex-wrap:nowrap}.pq-tag.is-topic{flex:0 1 auto;min-width:0}.pq-opt{padding:10px 12px;gap:10px}.pq-keys{flex-direction:row;margin-block-start:14px}.pq-key{--key-h: 44px;flex:1 1 0;min-width:0}.pq-x-body{margin-block-start:16px;padding-block-start:16px}.pq-fast{padding:12px 14px}.pq .katex-inline{white-space:normal}.pq-ghost-card{padding:16px;border-radius:var(--ga-r-lg)}}.pq-q.is-held{grid-template-columns:minmax(0,1fr);grid-template-areas:"main"}.pq-held{margin:0;font-size:14px;line-height:1.55;color:var(--ga-fg2)}.pq-held a{color:var(--ga-accent);white-space:nowrap}