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summary{font-weight:500;color:var(--sl-color-white)}.common-mistakes details[open] summary{margin-bottom:var(--space-sm)}.common-mistakes p{margin:0;color:var(--sl-color-gray-3);font-size:.875rem}.completion-badge.completed:after{content:"✓";color:var(--color-success);margin-left:var(--space-xs);font-weight:600}.path-nav{display:flex;justify-content:space-between;gap:var(--space-md);padding:var(--space-lg) 0;margin-top:var(--space-xl);border-top:1px solid var(--sl-color-hairline)}a.nav-link.nav-link{padding:var(--space-md);border:1px solid var(--sl-color-hairline);border-radius:0;text-decoration:none;color:var(--sl-color-accent);transition:border-color var(--transition-fast),color var(--transition-fast),background-color var(--transition-fast),transform var(--transition-fast);flex:1;text-align:center;background:var(--sl-color-bg-card);box-shadow:none}a.nav-link.nav-link:hover{border-color:var(--sl-color-accent);background-color:var(--sl-color-bg-aside);box-shadow:none;transform:translateY(-1px)}.nav-link.next{margin-left:auto}.pagination{display:flex;justify-content:space-between;gap:var(--space-md);padding:var(--space-lg) 0;border-top:1px solid var(--sl-color-hairline);margin-top:var(--space-xl)}a.pagination-link.pagination-link{display:flex;flex-direction:column;gap:var(--space-xs);padding:var(--space-md);border:1px solid var(--sl-color-hairline);border-radius:0;text-decoration:none;transition:border-color var(--transition-fast),background-color var(--transition-fast),transform var(--transition-fast);flex:1;background:var(--sl-color-bg-card);box-shadow:none}a.pagination-link.pagination-link:hover{border-color:var(--sl-color-accent);background-color:var(--sl-color-bg-aside);box-shadow:none;transform:translateY(-1px)}.pagination-label{font-size:.75rem;color:var(--sl-color-gray-3)}.pagination-title{font-weight:500;color:var(--sl-color-accent)}.pagination-link.next{text-align:right;margin-left:auto}.recent-views.recent-views{padding:var(--space-md);border:1px solid var(--sl-color-hairline);border-radius:0;background:var(--sl-color-bg-card);box-shadow:none}.recent-views.recent-views h3{font-size:.875rem;font-weight:600;margin-bottom:var(--space-sm);color:var(--sl-color-gray-2)}.recent-views.recent-views ul{list-style:none;padding:0;margin:0}.recent-views.recent-views a{color:var(--sl-color-accent);text-decoration:none;font-size:.875rem}.recent-views.recent-views a:hover{text-decoration:underline}.difficulty-filter{display:flex;gap:var(--space-sm);margin-bottom:var(--space-md)}.difficulty-btn{padding:var(--space-xs) var(--space-sm);border:1px solid var(--sl-color-hairline);border-radius:0;background:var(--sl-color-bg);color:var(--sl-color-gray-1);cursor:pointer;transition:border-color var(--transition-fast),color var(--transition-fast),background-color var(--transition-fast);font-size:.875rem}.difficulty-btn:hover,.difficulty-btn.active{border-color:var(--sl-color-accent);color:var(--sl-color-accent);background:var(--sl-color-accent-low)}.tag-filter{display:flex;flex-wrap:wrap;gap:var(--space-xs);margin-bottom:var(--space-md)}.tag-btn{padding:var(--space-xs) var(--space-sm);border:1px solid var(--sl-color-hairline);border-radius:0;background:var(--sl-color-bg);color:var(--sl-color-gray-1);cursor:pointer;transition:border-color var(--transition-fast),color var(--transition-fast),background-color var(--transition-fast);font-size:.75rem}.tag-btn:hover,.tag-btn.active{border-color:var(--sl-color-accent);color:var(--sl-color-accent);background:var(--sl-color-accent-low)}.search-box{position:relative}.search-input{width:100%;padding:var(--space-sm) var(--space-md);padding-left:2.5rem;border:1px solid var(--sl-color-hairline);border-radius:0;background:var(--sl-color-bg);color:var(--sl-color-gray-1);font-size:.875rem;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.search-input:focus{outline:none;border-color:var(--sl-color-accent);box-shadow:0 0 0 2px var(--sl-color-accent-low)}.search-input::placeholder{color:var(--sl-color-gray-3)}.search-icon{position:absolute;left:var(--space-sm);top:50%;transform:translateY(-50%);color:var(--sl-color-gray-3);pointer-events:none}.term-popup{display:none;position:absolute;background:var(--sl-color-bg-card);border:1px solid var(--sl-color-hairline);border-radius:0;padding:var(--space-md);max-width:300px;box-shadow:none;z-index:100}.term-tooltip:hover .term-popup,.term-tooltip.active .term-popup{display:block}.term-definition{margin:0 0 var(--space-sm);font-size:.875rem;line-height:1.5;color:var(--sl-color-gray-1)}.term-link{font-size:.75rem;color:var(--sl-color-accent);text-decoration:none}.term-link:hover{text-decoration:underline}[data-theme=dark] .btn{background-color:var(--sl-color-bg-card);border-color:var(--sl-color-hairline);color:var(--sl-color-gray-1)}[data-theme=dark] .btn:hover{background-color:var(--sl-color-bg-inline-code);border-color:var(--sl-color-accent)}[data-theme=dark] .btn-primary{background-color:var(--sl-color-accent);color:var(--sl-color-white)}[data-theme=dark] .search-input{background:var(--sl-color-bg-card);border-color:var(--sl-color-hairline);color:var(--sl-color-gray-1)}[data-theme=dark] .search-input:focus{border-color:var(--sl-color-accent);box-shadow:0 0 0 3px var(--sl-color-accent-low)}[data-theme=dark] .term-popup{background:var(--sl-color-bg-card);border-color:var(--sl-color-hairline)}[data-theme=dark] a.nav-link.nav-link,[data-theme=dark] a.pagination-link.pagination-link{border-color:var(--sl-color-hairline)}[data-theme=dark] a.nav-link.nav-link:hover,[data-theme=dark] a.pagination-link.pagination-link:hover{border-color:var(--sl-color-accent);background:var(--sl-color-bg-card)}[data-theme=dark] .recent-views.recent-views,[data-theme=dark] button.share-btn.share-btn{border-color:var(--sl-color-hairline)}[data-theme=dark] button.share-btn.share-btn:hover{border-color:var(--sl-color-accent);color:var(--sl-color-accent)}[data-theme=dark] .difficulty-btn,[data-theme=dark] .tag-btn{border-color:var(--sl-color-hairline);color:var(--sl-color-gray-3)}[data-theme=dark] .difficulty-btn:hover,[data-theme=dark] .difficulty-btn.active,[data-theme=dark] .tag-btn:hover,[data-theme=dark] .tag-btn.active{border-color:var(--sl-color-accent);color:var(--sl-color-accent);background:var(--sl-color-accent-low)}starlight-tabs{border-bottom:1px solid var(--sl-color-hairline)}starlight-tabs [role=tablist]{display:flex;gap:var(--space-sm);border-bottom:none}starlight-tabs [role=tab]{padding:var(--space-sm) var(--space-md);border:none;border-bottom:2px solid transparent;background:transparent;color:var(--sl-color-gray-3);cursor:pointer;transition:all var(--transition-fast);font-size:.875rem;font-weight:500}starlight-tabs [role=tab]:hover{color:var(--sl-color-white)}starlight-tabs [role=tab][aria-selected=true]{color:var(--sl-color-accent);border-bottom-color:var(--sl-color-accent)}starlight-tabs [role=tabpanel]{padding-top:var(--space-md)}[data-theme=dark] starlight-tabs [role=tab]{color:#e0e2e652}[data-theme=dark] starlight-tabs [role=tab]:hover{color:#e0e2e6d1}[data-theme=dark] starlight-tabs [role=tab][aria-selected=true]{color:#5488e8;border-bottom-color:#5488e8}