.section[data-astro-cid-fbykqhpd]{border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;margin-bottom:var(--spacing-sm)}.section-header[data-astro-cid-fbykqhpd]{width:100%;display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md);background:var(--bg-secondary);border:none;cursor:pointer;font-family:inherit;text-align:left;transition:background-color .2s ease}.section-header[data-astro-cid-fbykqhpd]:hover{background:var(--bg-tertiary)}.section-title[data-astro-cid-fbykqhpd]{font-size:1rem;font-weight:600;color:var(--text-primary)}.section-meta[data-astro-cid-fbykqhpd]{display:flex;align-items:center;gap:var(--spacing-sm)}.problem-count[data-astro-cid-fbykqhpd]{font-size:.75rem;color:var(--text-tertiary);background:var(--bg-tertiary);padding:.25rem .5rem;border-radius:var(--radius-sm)}.chevron[data-astro-cid-fbykqhpd]{color:var(--text-tertiary);transition:transform .2s ease}.section[data-astro-cid-fbykqhpd][data-expanded=true] .chevron[data-astro-cid-fbykqhpd]{transform:rotate(180deg)}.section-content[data-astro-cid-fbykqhpd]{display:none;padding:var(--spacing-md);border-top:1px solid var(--border);background:var(--bg-primary)}.section[data-astro-cid-fbykqhpd][data-expanded=true] .section-content[data-astro-cid-fbykqhpd]{display:block}.problem-card[data-astro-cid-y7czws4t]{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-secondary);transition:all .2s ease;text-decoration:none}.problem-card[data-astro-cid-y7czws4t]:hover{border-color:var(--border-hover);background:var(--bg-tertiary);transform:translate(4px)}.problem-info[data-astro-cid-y7czws4t]{display:flex;align-items:center;gap:var(--spacing-xs)}.problem-number[data-astro-cid-y7czws4t]{font-size:.875rem;color:var(--text-tertiary);font-weight:500}.problem-title[data-astro-cid-y7czws4t]{font-size:.9rem;color:var(--text-primary);font-weight:500}.difficulty[data-astro-cid-y7czws4t]{font-size:.75rem;font-weight:600;padding:.25rem .75rem;border-radius:9999px;color:var(--difficulty-color);background:color-mix(in srgb,var(--difficulty-color) 15%,transparent)}.leetcode-page[data-astro-cid-qu626iqm]{padding:var(--spacing-lg) 0}.page-header[data-astro-cid-qu626iqm]{margin-bottom:var(--spacing-xl)}.page-header[data-astro-cid-qu626iqm] h1[data-astro-cid-qu626iqm]{font-size:2rem;margin-bottom:var(--spacing-sm);background:linear-gradient(135deg,#f59e0b,#ef4444);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.subtitle[data-astro-cid-qu626iqm]{color:var(--text-secondary);font-size:1rem;max-width:600px;line-height:1.7}.handbook-banner[data-astro-cid-qu626iqm]{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md) var(--spacing-lg);background:linear-gradient(135deg,#f59e0b1a,#ef44441a);border:1px solid rgba(245,158,11,.3);border-radius:var(--radius-lg);margin-bottom:var(--spacing-xl);transition:all .2s ease}.handbook-banner[data-astro-cid-qu626iqm]:hover{border-color:#f59e0b80;transform:translateY(-2px)}.handbook-content[data-astro-cid-qu626iqm]{display:flex;align-items:center;gap:var(--spacing-md)}.handbook-icon[data-astro-cid-qu626iqm]{font-size:1.5rem}.handbook-text[data-astro-cid-qu626iqm]{display:flex;flex-direction:column;gap:.125rem}.handbook-text[data-astro-cid-qu626iqm] strong[data-astro-cid-qu626iqm]{color:var(--text-primary);font-size:1rem}.handbook-text[data-astro-cid-qu626iqm] span[data-astro-cid-qu626iqm]{color:var(--text-secondary);font-size:.875rem}.handbook-banner[data-astro-cid-qu626iqm] svg[data-astro-cid-qu626iqm]{color:var(--text-tertiary);transition:transform .2s ease}.handbook-banner[data-astro-cid-qu626iqm]:hover svg[data-astro-cid-qu626iqm]{transform:translate(4px);color:#f59e0b}.sections-container[data-astro-cid-qu626iqm]{display:flex;flex-direction:column}.problems-list[data-astro-cid-qu626iqm]{display:flex;flex-direction:column;gap:var(--spacing-xs)}.empty-message[data-astro-cid-qu626iqm]{color:var(--text-tertiary);font-size:.875rem;font-style:italic;margin:0}@media(max-width:768px){.page-header[data-astro-cid-qu626iqm] h1[data-astro-cid-qu626iqm]{font-size:1.5rem}.subtitle[data-astro-cid-qu626iqm]{font-size:.9rem}}