.problem-container[data-astro-cid-c3gmgvjm]{max-width:900px;margin:0 auto}.problem-header-section[data-astro-cid-c3gmgvjm]{border-bottom:1.5px solid var(--border);padding-bottom:2rem;margin-bottom:2.5rem}.problem-title-row[data-astro-cid-c3gmgvjm]{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;margin-bottom:1.5rem}.problem-title[data-astro-cid-c3gmgvjm]{font-family:"DM Serif Display",serif;font-size:38px;font-weight:400;line-height:1.2;margin:0;color:var(--text)}.problem-badges[data-astro-cid-c3gmgvjm]{display:flex;gap:8px;align-items:center}.difficulty-badge[data-astro-cid-c3gmgvjm]{font-size:12px;font-weight:700;text-transform:uppercase;padding:4px 12px;border-radius:6px;letter-spacing:.05em}.difficulty-badge[data-astro-cid-c3gmgvjm].easy{background:#e6fbf3;color:#0d9488}.dark .difficulty-badge[data-astro-cid-c3gmgvjm].easy{background:#064e3b;color:#34d399}.difficulty-badge[data-astro-cid-c3gmgvjm].medium{background:#fef3c7;color:#d97706}.dark .difficulty-badge[data-astro-cid-c3gmgvjm].medium{background:#78350f;color:#fbbf24}.difficulty-badge[data-astro-cid-c3gmgvjm].hard{background:#fee2e2;color:#dc2626}.dark .difficulty-badge[data-astro-cid-c3gmgvjm].hard{background:#7f1d1d;color:#f87171}.curated-badge[data-astro-cid-c3gmgvjm]{font-size:11px;font-weight:700;padding:4px 10px;border-radius:6px;text-transform:uppercase}.curated-badge[data-astro-cid-c3gmgvjm].blind75{background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe}.dark .curated-badge[data-astro-cid-c3gmgvjm].blind75{background:#1e3a8a;color:#93c5fd;border:1px solid #1e40af}.curated-badge[data-astro-cid-c3gmgvjm].top250{background:#f5f3ff;color:#6d28d9;border:1px solid #ddd6fe}.dark .curated-badge[data-astro-cid-c3gmgvjm].top250{background:#3b0764;color:#c084fc;border:1px solid #581c87}.problem-meta-grid[data-astro-cid-c3gmgvjm]{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}.meta-item[data-astro-cid-c3gmgvjm]{display:flex;flex-direction:column;gap:6px}.meta-label[data-astro-cid-c3gmgvjm]{font-size:11px;font-weight:700;text-transform:uppercase;color:var(--muted);letter-spacing:.05em}.meta-pills[data-astro-cid-c3gmgvjm]{display:flex;flex-wrap:wrap;gap:6px}.pattern-pill[data-astro-cid-c3gmgvjm]{font-size:12px;font-weight:600;background:var(--card-bg);border:1px solid var(--border);color:var(--muted);padding:3px 10px;border-radius:6px;text-decoration:none;transition:all .2s ease}.pattern-pill[data-astro-cid-c3gmgvjm]:hover{color:var(--accent);border-color:var(--accent)}.company-tag[data-astro-cid-c3gmgvjm]{font-size:11px;font-weight:600;background:#00000008;border:1px dashed var(--border);color:var(--muted);padding:2px 8px;border-radius:4px}.dark .company-tag[data-astro-cid-c3gmgvjm]{background:#ffffff08}.lc-external-link[data-astro-cid-c3gmgvjm]{font-size:13px;font-weight:700;color:var(--accent);text-decoration:none;display:inline-flex;align-items:center;gap:4px;margin-top:4px}.lc-external-link[data-astro-cid-c3gmgvjm]:hover{text-decoration:underline}.external-icon[data-astro-cid-c3gmgvjm]{flex-shrink:0}.prose-content[data-astro-cid-c3gmgvjm]{margin-bottom:4rem}.prose-content[data-astro-cid-c3gmgvjm] p{margin-bottom:1.25rem;line-height:1.7}.prose-content[data-astro-cid-c3gmgvjm] ul{margin-bottom:1.5rem;padding-left:20px}.prose-content[data-astro-cid-c3gmgvjm] li{margin-bottom:.5rem}.prose-content[data-astro-cid-c3gmgvjm] code:not(pre code){background:#0000000d;color:var(--accent);font-family:Courier New,Courier,monospace;font-weight:600;padding:2px 6px;border-radius:4px;font-size:15px}.dark .prose-content[data-astro-cid-c3gmgvjm] code:not(pre code){background:#ffffff0d;color:var(--accent)}.problem-prev-next-nav[data-astro-cid-c3gmgvjm]{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;padding-top:2rem;margin-bottom:2rem}.prose-content[data-astro-cid-c3gmgvjm] h2 a[href="/dsa"]{text-decoration:none!important;color:#1d4ed8!important}.prose-content[data-astro-cid-c3gmgvjm] h2 a[href="/dsa"]:hover{text-decoration:none!important;color:#1e40af!important}.dark .prose-content[data-astro-cid-c3gmgvjm] h2 a[href="/dsa"]{color:#60a5fa!important}.dark .prose-content[data-astro-cid-c3gmgvjm] h2 a[href="/dsa"]:hover{color:#93c5fd!important}.nav-btn[data-astro-cid-c3gmgvjm]{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;padding:1.25rem;display:flex;flex-direction:column;text-decoration:none;transition:all .2s cubic-bezier(.16,1,.3,1)}.nav-btn[data-astro-cid-c3gmgvjm]:hover{border-color:var(--accent);box-shadow:0 4px 16px var(--shadow)}.nav-btn[data-astro-cid-c3gmgvjm].prev{align-items:flex-start;text-align:left}.nav-btn[data-astro-cid-c3gmgvjm].next{align-items:flex-end;text-align:right}.nav-btn[data-astro-cid-c3gmgvjm] .direction[data-astro-cid-c3gmgvjm]{font-size:12px;font-weight:700;text-transform:uppercase;color:var(--muted);margin-bottom:4px}.nav-btn[data-astro-cid-c3gmgvjm] .title[data-astro-cid-c3gmgvjm]{font-size:16px;font-weight:700;color:var(--text)}.nav-btn[data-astro-cid-c3gmgvjm]:hover .title[data-astro-cid-c3gmgvjm]{color:var(--accent)}.nav-btn-placeholder[data-astro-cid-c3gmgvjm]{visibility:hidden}@media(max-width:640px){.problem-prev-next-nav[data-astro-cid-c3gmgvjm]{grid-template-columns:1fr;gap:12px}.nav-btn-placeholder[data-astro-cid-c3gmgvjm]{display:none}}