:root{--primary-color: #2563eb;--primary-dark: #1d4ed8;--primary-light: #3b82f6;--secondary-color: #059669;--secondary-dark: #047857;--accent-color: #dc2626;--warning-color: #f59e0b;--text-primary: #111827;--text-secondary: #6b7280;--text-muted: #9ca3af;--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--surface: #ffffff;--border-color: #e5e7eb;--border-light: #f3f4f6;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);--radius-sm: 0.375rem;--radius-md: 0.5rem;--radius-lg: 0.75rem;--max-width: 1200px;--transition-fast: 0.15s ease-out;--transition-normal: 0.25s ease-out}body{font-family:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;line-height:1.7;color:var(--text-primary);background-color:var(--bg-secondary);font-feature-settings:'kern' 1;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;margin-bottom:1rem;color:var(--text-primary);letter-spacing:-0.025em}h1{font-size:clamp(2rem, 4vw, 2.5rem);background:linear-gradient(135deg, var(--primary-color), var(--secondary-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:1.5rem;font-weight:800}h2{font-size:clamp(1.5rem, 3vw, 1.875rem);color:var(--primary-color);border-bottom:2px solid var(--border-light);padding-bottom:0.5rem;margin-top:2rem;position:relative}h2::after{content:'';position:absolute;bottom:-2px;left:0;width:60px;height:2px;background:linear-gradient(90deg, var(--primary-color), var(--secondary-color));border-radius:1px}h3{font-size:clamp(1.25rem, 2.5vw, 1.5rem);color:var(--text-primary);margin:1.5rem 0 1rem 0;font-weight:600}.wrapper{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}.page-content{background:var(--bg-primary);margin:1rem;padding:2rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}@media (max-width: 768px){.page-content{margin:0.5rem;padding:1.5rem;border-radius:var(--radius-md)}}.btn{display:inline-block;padding:0.75rem 1.5rem;font-weight:600;font-size:0.875rem;text-decoration:none;border-radius:var(--radius-md);border:none;cursor:pointer;transition:var(--transition-normal);text-align:center;line-height:1.5;margin:0.25rem}.btn-primary{background:linear-gradient(135deg, var(--primary-color), var(--primary-light));color:white;box-shadow:var(--shadow-md)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);color:white;text-decoration:none;background:linear-gradient(135deg, var(--primary-dark), var(--primary-color))}.btn-outline{background:var(--surface);color:var(--primary-color);border:2px solid var(--primary-color)}.btn-outline:hover{background:var(--primary-color);color:white;text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn.fs-5{font-size:1.125rem;padding:1rem 2rem}.code-example{background:var(--surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:2rem;margin:2rem 0;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}.code-example::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg, var(--primary-color), var(--secondary-color))}@media (max-width: 768px){.code-example{padding:1.5rem;margin:1rem 0}}.emergency-section{background:linear-gradient(135deg, #fef2f2, #fdf2f8);border:2px solid #fca5a5;border-radius:var(--radius-lg);padding:2rem;margin:2rem 0;position:relative;box-shadow:var(--shadow-md)}.emergency-section::before{content:'🚨';position:absolute;top:-12px;left:1.5rem;background:white;padding:0 0.75rem;font-size:1.5rem;border-radius:var(--radius-sm);box-shadow:var(--shadow-sm)}.emergency-section h2{color:var(--accent-color);margin-top:0.5rem;border:none}.emergency-section h2::after{display:none}@media (max-width: 768px){.emergency-section{padding:1.5rem}.emergency-section::before{top:-10px;left:1rem;font-size:1.25rem}}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit, minmax(200px, 1fr));gap:1.5rem;margin:2rem 0}@media (max-width: 768px){.stats-grid{grid-template-columns:repeat(2, 1fr);gap:1rem}}@media (max-width: 480px){.stats-grid{grid-template-columns:1fr}}.stat-card{background:var(--surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:1.5rem;text-align:center;transition:var(--transition-normal);box-shadow:var(--shadow-sm)}.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-color)}.stat-number{display:block;font-size:2rem;font-weight:800;color:var(--primary-color);line-height:1;margin-bottom:0.5rem}.stat-label{color:var(--text-secondary);font-size:0.875rem;font-weight:500;text-transform:uppercase;letter-spacing:0.05em}.breadcrumb-nav{background:var(--bg-tertiary);border-bottom:1px solid var(--border-color);padding:0.75rem 0;font-size:0.875rem}.breadcrumb{display:flex;align-items:center;gap:0.5rem;margin:0;padding:0;list-style:none;flex-wrap:wrap}.breadcrumb-item{display:flex;align-items:center}.breadcrumb-item:not(:last-child)::after{content:'›';margin-left:0.5rem;color:var(--text-muted);font-weight:600}.breadcrumb-item a{color:var(--text-secondary);text-decoration:none;transition:var(--transition-fast)}.breadcrumb-item a:hover{color:var(--primary-color);text-decoration:none}.breadcrumb-item.active{color:var(--text-primary);font-weight:500}.toc-nav{position:fixed;top:50%;right:2rem;transform:translateY(-50%);width:280px;max-height:70vh;background:var(--surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);z-index:100;overflow:hidden}@media (max-width: 1200px){.toc-nav{position:relative;top:auto;right:auto;transform:none;width:100%;max-height:none;margin:2rem 0}}.toc-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.5rem;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.toc-header h3{margin:0;font-size:1rem;font-weight:600;color:var(--text-primary)}.toc-toggle{background:none;border:none;cursor:pointer;padding:0.25rem;border-radius:var(--radius-sm);transition:var(--transition-fast)}.toc-toggle:hover{background:var(--border-light)}.toc-toggle .toc-icon{font-size:0.875rem;color:var(--text-secondary)}.toc-content{max-height:400px;overflow-y:auto;padding:1rem 0}.toc-content.toc-collapsed{display:none}.toc-list{list-style:none;margin:0;padding:0}.toc-item{margin:0}.toc-item.toc-h3{margin-left:1rem}.toc-link{display:block;padding:0.5rem 1.5rem;color:var(--text-secondary);text-decoration:none;font-size:0.875rem;line-height:1.4;transition:var(--transition-fast);border-left:3px solid transparent}.toc-link:hover{color:var(--primary-color);background:var(--bg-tertiary);border-left-color:var(--primary-color);text-decoration:none}.feedback-section{margin:3rem 0;padding:2rem;background:linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));border:1px solid var(--border-color);border-radius:var(--radius-lg);text-align:center}.feedback-content{max-width:600px;margin:0 auto}.feedback-content h3{margin-bottom:1rem;color:var(--text-primary)}.feedback-content p{margin-bottom:2rem;color:var(--text-secondary);line-height:1.6}.feedback-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}@media (max-width: 480px){.feedback-buttons{flex-direction:column;align-items:center}}.feedback-thanks{background:var(--secondary-color);color:white;padding:1rem 2rem;border-radius:var(--radius-lg);margin-top:1rem;font-weight:500}.feedback-thanks p{margin:0;color:white}.back-to-top{position:fixed;bottom:2rem;right:2rem;width:50px;height:50px;background:var(--primary-color);color:white;border:none;border-radius:50%;cursor:pointer;display:none;align-items:center;justify-content:center;font-size:1.25rem;font-weight:600;box-shadow:var(--shadow-lg);transition:var(--transition-normal);z-index:1000}.back-to-top:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-lg)}@media (max-width: 768px){.back-to-top{bottom:1rem;right:1rem;width:45px;height:45px;font-size:1.125rem}}#reading-progress{position:fixed;top:0;left:0;width:0%;height:3px;background:linear-gradient(90deg, var(--primary-color), var(--secondary-color));z-index:9999;transition:width 0.3s ease}a{color:var(--primary-color);text-decoration:none;transition:var(--transition-fast)}a:hover{color:var(--primary-dark);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}.fs-6.fw-300{font-size:1.25rem;font-weight:400;color:var(--text-secondary);margin-bottom:2rem;line-height:1.6}@media (max-width: 768px){.fs-6.fw-300{font-size:1.125rem}}ul,ol{margin-bottom:1.5rem;padding-left:1.5rem}li{margin-bottom:0.5rem;line-height:1.6}ul li{position:relative}ul li::marker{color:var(--primary-color)}blockquote{border-left:4px solid var(--primary-color);background:var(--bg-tertiary);padding:1rem 1.5rem;margin:1.5rem 0;border-radius:0 var(--radius-md) var(--radius-md) 0;font-style:italic;color:var(--text-secondary)}code{background:var(--bg-tertiary);padding:0.125rem 0.375rem;border-radius:var(--radius-sm);font-family:'SF Mono', Monaco, 'Cascadia Code', 'Consolas', monospace;font-size:0.875em;color:var(--primary-color)}pre{background:var(--text-primary);color:white;padding:1.5rem;border-radius:var(--radius-md);overflow-x:auto;margin:1.5rem 0}pre code{background:transparent;color:inherit;padding:0}@media (max-width: 768px){.btn{display:block;width:100%;margin:0.25rem 0}.btn+.btn{margin-left:0;margin-top:0.5rem}.site-header .wrapper{padding:0 1rem}.breadcrumb{font-size:0.8125rem}}@media (max-width: 480px){html{font-size:14px}.page-content{margin:0.25rem;padding:1rem}.code-example{padding:1rem}.emergency-section{padding:1rem}}@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.code-example,.stat-card{animation:fadeInUp 0.6s ease-out}.emergency-section{animation:fadeInUp 0.7s ease-out}@media (prefers-color-scheme: dark){:root{--text-primary: #f9fafb;--text-secondary: #d1d5db;--text-muted: #9ca3af;--bg-primary: #1f2937;--bg-secondary: #111827;--bg-tertiary: #374151;--surface: #1f2937;--border-color: #374151;--border-light: #4b5563}.site-header{background:rgba(31,41,55,0.95);border-bottom-color:var(--border-color)}.emergency-section{background:linear-gradient(135deg, #451a03, #7c2d12);border-color:#dc2626}}@media print{.btn,.emergency-section::before,.back-to-top,.toc-nav,#reading-progress{display:none !important}body{background:white !important;color:black !important;font-size:12pt;line-height:1.4}.page-content{box-shadow:none !important;border:none !important;padding:0 !important;margin:0 !important}h1,h2,h3{color:black !important;page-break-after:avoid}.code-example{border:1px solid #ccc !important;box-shadow:none !important;page-break-inside:avoid}a{color:black !important;text-decoration:underline !important}}.page-navigation{margin:3rem 0;padding:2rem;background:var(--bg-tertiary);border-radius:var(--radius-lg);border:1px solid var(--border-color)}.nav-links{display:grid;grid-template-columns:1fr 1fr;gap:2rem}@media (max-width: 768px){.nav-links{grid-template-columns:1fr;gap:1rem}}.nav-previous{text-align:left}.nav-next{text-align:right}@media (max-width: 768px){.nav-next{text-align:left}}.nav-link{display:block;padding:1rem;background:var(--surface);border:1px solid var(--border-color);border-radius:var(--radius-md);text-decoration:none;transition:var(--transition-normal)}.nav-link:hover{border-color:var(--primary-color);box-shadow:var(--shadow-md);text-decoration:none}.nav-direction{display:block;font-size:0.875rem;color:var(--text-secondary);margin-bottom:0.25rem}.nav-title{display:block;font-weight:600;color:var(--text-primary)}.notification{position:fixed;top:1rem;right:1rem;background:var(--surface);color:var(--text-primary);padding:1rem 1.5rem;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);border-left:4px solid var(--secondary-color);transform:translateX(100%);transition:transform 0.3s ease;z-index:9999;max-width:300px}.notification.notification-success{border-left-color:var(--secondary-color)}.notification.notification-error{border-left-color:var(--accent-color)}.notification.notification-warning{border-left-color:var(--warning-color)}.notification.show{transform:translateX(0)}.lazy{opacity:0;transition:opacity 0.3s ease}.lazy.loaded{opacity:1}.loading-skeleton{background:linear-gradient(90deg, var(--border-light), var(--border-color), var(--border-light));background-size:200% 100%;animation:skeleton-loading 1.5s infinite}@keyframes skeleton-loading{0%{background-position:200% 0}100%{background-position:-200% 0}}.toc-link.active{color:var(--primary-color);background:var(--bg-tertiary);border-left-color:var(--primary-color);font-weight:600}.site-header.scrolled{box-shadow:var(--shadow-md)}.fab-container{position:fixed;bottom:2rem;right:2rem;display:flex;flex-direction:column;gap:1rem;z-index:1000}@media (max-width: 768px){.fab-container{bottom:1rem;right:1rem}}.fab{width:56px;height:56px;border-radius:50%;border:none;background:var(--primary-color);color:white;font-size:1.5rem;cursor:pointer;box-shadow:var(--shadow-lg);transition:var(--transition-normal);display:flex;align-items:center;justify-content:center}.fab:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 20px rgba(37,99,235,0.3)}.fab.fab-secondary{background:var(--secondary-color);width:48px;height:48px;font-size:1.25rem}.fab.fab-secondary:hover{background:var(--secondary-dark)}.search-container{position:relative;max-width:500px;margin:0 auto}.search-input{width:100%;padding:1rem 1rem 1rem 3rem;border:2px solid var(--border-color);border-radius:var(--radius-lg);background:var(--surface);font-size:1rem;transition:var(--transition-normal)}.search-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(37,99,235,0.1)}.search-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--text-secondary);font-size:1.25rem}.search-results{position:absolute;top:100%;left:0;right:0;background:var(--surface);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);max-height:400px;overflow-y:auto;z-index:1000;display:none}.search-result-item{padding:1rem;border-bottom:1px solid var(--border-light);cursor:pointer;transition:var(--transition-fast)}.search-result-item:hover{background:var(--bg-tertiary)}.search-result-item:last-child{border-bottom:none}.text-center{text-align:center !important}.text-left{text-align:left !important}.text-right{text-align:right !important}.mt-0{margin-top:0 !important}.mt-1{margin-top:0.5rem !important}.mt-2{margin-top:1rem !important}.mt-3{margin-top:1.5rem !important}.mt-4{margin-top:2rem !important}.mb-0{margin-bottom:0 !important}.mb-1{margin-bottom:0.5rem !important}.mb-2{margin-bottom:1rem !important}.mb-3{margin-bottom:1.5rem !important}.mb-4{margin-bottom:2rem !important}.hidden{display:none !important}.visible{display:block !important}.sr-only{position:absolute !important;width:1px !important;height:1px !important;padding:0 !important;margin:-1px !important;overflow:hidden !important;clip:rect(0, 0, 0, 0) !important;white-space:nowrap !important;border:0 !important}.hero-section{background:linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);border-radius:var(--radius-lg);padding:3rem 2rem;margin-bottom:2rem;text-align:center;position:relative;overflow:hidden}.hero-section::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%230f172a' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 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2rem;font-weight:700;font-size:1.1rem;text-decoration:none;border-radius:var(--radius-md);transition:all var(--transition-normal);min-width:200px;text-align:center;position:relative;overflow:hidden}.btn-hero::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);transition:left 0.6s}.btn-hero:hover::before{left:100%}.btn-hero.primary{background:linear-gradient(135deg, var(--primary-color), var(--primary-dark));color:white;box-shadow:var(--shadow-md)}.btn-hero.primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);background:linear-gradient(135deg, var(--primary-dark), var(--primary-color))}.btn-hero.secondary{background:linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));color:white;box-shadow:var(--shadow-md)}.btn-hero.secondary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);background:linear-gradient(135deg, var(--secondary-dark), var(--secondary-color))}@media (max-width: 768px){.btn-hero{width:100%;max-width:300px}}a{color:var(--primary-color);text-decoration:none;transition:all var(--transition-fast);border-bottom:1px solid transparent}a:hover{color:var(--primary-dark);border-bottom-color:var(--primary-color)}h3 a{font-weight:700;padding:0.25rem 0.5rem;border-radius:var(--radius-sm);background:linear-gradient(135deg, rgba(37,99,235,0.1), rgba(5,150,105,0.1));border-bottom:none}h3 a:hover{background:linear-gradient(135deg, rgba(37,99,235,0.15), rgba(5,150,105,0.15));transform:translateX(2px)}.content-section{margin:2rem 0;padding:1.5rem;background:var(--bg-primary);border-radius:var(--radius-md);border-left:4px solid var(--primary-color);box-shadow:var(--shadow-sm)}.content-list{display:grid;gap:1rem;margin:1rem 0}.content-list li{padding:0.75rem;background:var(--bg-secondary);border-radius:var(--radius-sm);border-left:3px solid var(--secondary-color);transition:all var(--transition-fast)}.content-list li:hover{background:rgba(37,99,235,0.05);border-left-color:var(--primary-color);transform:translateX(4px)}table{width:100%;border-collapse:collapse;margin:1.5rem 0;background:var(--bg-primary);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-md)}table td{padding:1rem;text-align:center;border:none}table td:first-child{background:linear-gradient(135deg, rgba(37,99,235,0.1), rgba(5,150,105,0.1));border-right:1px solid var(--border-color)}table td a{font-weight:700;font-size:1.1rem;display:inline-block;padding:0.5rem 1rem;border-radius:var(--radius-sm);transition:all var(--transition-normal)}table td a:hover{background:var(--primary-color);color:white;transform:scale(1.05);border-bottom:none}@media (max-width: 768px){.wrapper{padding:0 1rem}.page-content{margin:0.25rem;padding:1rem}table{display:block;overflow-x:auto;white-space:nowrap}h2{font-size:1.5rem}h3{font-size:1.25rem}}@media (max-width: 1024px){.hero-section{padding:2.5rem 1.5rem}.nav-rapida{gap:0.75rem}.btn-hero{min-width:180px;padding:0.875rem 1.5rem}.content-section{padding:1.25rem}}@media (max-width: 768px){.hero-section{padding:2rem 1rem;margin-bottom:1.5rem}.hero-section::before{opacity:0.2}.hero-title{font-size:clamp(2rem, 6vw, 2.75rem) !important;margin-bottom:1rem !important}.hero-description{font-size:1.1rem;margin-bottom:1.5rem}.nav-rapida{flex-direction:column;align-items:center;gap:1rem}.btn-hero{width:100%;max-width:320px;padding:1rem 1.5rem;font-size:1rem}.content-section{margin:1.5rem 0;padding:1rem;border-radius:var(--radius-sm)}.content-list li{padding:1rem;font-size:0.95rem;line-height:1.6}table{font-size:0.9rem}table td{padding:0.75rem 0.5rem;vertical-align:top}table td a{font-size:1rem;padding:0.5rem 0.75rem}h2{font-size:1.5rem;margin-top:1.5rem}h3{font-size:1.25rem;margin:1.25rem 0 0.75rem 0}}@media (max-width: 480px){.wrapper{padding:0 0.75rem}.page-content{margin:0.25rem;padding:0.75rem}.hero-section{padding:1.5rem 0.75rem;margin-bottom:1rem}.hero-title{font-size:clamp(1.75rem, 7vw, 2.25rem) !important}.hero-description{font-size:1rem}.btn-hero{max-width:280px;padding:0.875rem 1.25rem;font-size:0.95rem}.content-section{margin:1rem 0;padding:0.75rem}.content-list li{padding:0.75rem;font-size:0.9rem}ul li{margin-bottom:0.5rem;line-height:1.5}}.btn-hero:focus,a:focus{outline:2px solid var(--primary-color);outline-offset:2px;border-radius:var(--radius-sm)}a:visited{color:var(--primary-dark)}a:focus,a:hover{color:var(--primary-dark);text-decoration:underline}@media (prefers-contrast: high){:root{--text-primary: #000000;--text-secondary: #333333;--border-color: #666666}.btn-hero{border:2px solid currentColor}.hero-title{-webkit-text-fill-color:var(--text-primary);background:none}}@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important}.btn-hero::before{display:none}}.hero-section{will-change:transform}.btn-hero{will-change:transform, box-shadow}.content-loading{background:linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-tertiary) 50%, var(--bg-secondary) 75%);background-size:200% 100%;animation:loading 1.5s infinite;border-radius:var(--radius-sm);height:1rem}@keyframes loading{0%{background-position:200% 0}100%{background-position:-200% 0}}@media print{.hero-section{background:none !important;box-shadow:none !important}.hero-section::before{display:none !important}.btn-hero{background:none !important;color:var(--text-primary) !important;border:1px solid var(--text-primary) !important;box-shadow:none !important}.content-section{box-shadow:none !important;border:1px solid var(--border-color) !important}a{text-decoration:underline !important;color:var(--text-primary) !important}a[href^="http"]:after{content:" (" attr(href) ")";font-size:0.8em;color:var(--text-secondary)}}.collapsible-section{border:1px solid var(--border-color);border-radius:var(--radius-md);margin:1rem 0;overflow:hidden;transition:all var(--transition-normal)}.collapsible-section:hover{box-shadow:var(--shadow-md)}.collapsible-header{background:linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));padding:1rem 1.5rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:all var(--transition-fast);user-select:none}.collapsible-header:hover{background:linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary))}.collapsible-header h3{margin:0;font-size:1.25rem;font-weight:600}.collapsible-header .toggle-icon{font-size:1.5rem;color:var(--primary-color);transition:transform var(--transition-normal)}.collapsible-header .toggle-icon.expanded{transform:rotate(180deg)}.collapsible-content{max-height:0;overflow:hidden;transition:max-height 0.3s ease-out, padding 0.3s ease-out;padding:0 1.5rem}.collapsible-content.expanded{max-height:1000px;padding:1rem 1.5rem}.collapsible-section.expanded{border-color:var(--primary-color);box-shadow:var(--shadow-lg)}.floating-toc{position:fixed;top:50%;right:2rem;transform:translateY(-50%);background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:1rem;box-shadow:var(--shadow-lg);max-width:250px;z-index:100;opacity:0;visibility:hidden;transition:all var(--transition-normal)}.floating-toc.visible{opacity:1;visibility:visible}@media (max-width: 1200px){.floating-toc{display:none}}.floating-toc h4{margin:0 0 0.75rem 0;font-size:0.875rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.05em}.floating-toc ul{list-style:none;padding:0;margin:0}.floating-toc ul li{margin:0.25rem 0}.floating-toc ul li a{display:block;padding:0.25rem 0.5rem;color:var(--text-secondary);font-size:0.875rem;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.floating-toc ul li a:hover,.floating-toc ul li a.active{background:var(--primary-color);color:white;text-decoration:none}html{scroll-behavior:smooth}.section-animate{opacity:0;transform:translateY(20px);transition:all 0.6s ease-out}.section-animate.visible{opacity:1;transform:translateY(0)}.content-list li{opacity:0;transform:translateX(-20px);animation:slideInLeft 0.6s ease-out forwards}.content-list li:nth-child(1){animation-delay:.1s}.content-list li:nth-child(2){animation-delay:.2s}.content-list li:nth-child(3){animation-delay:.3s}.content-list li:nth-child(4){animation-delay:.4s}.content-list li:nth-child(5){animation-delay:.5s}.content-list li:nth-child(6){animation-delay:.6s}.content-list li:nth-child(7){animation-delay:.7s}.content-list li:nth-child(8){animation-delay:.8s}.content-list li:nth-child(9){animation-delay:.9s}.content-list li:nth-child(10){animation-delay:1s}@keyframes slideInLeft{to{opacity:1;transform:translateX(0)}}.section-loading .content-list li{background:var(--bg-tertiary);border-radius:var(--radius-sm);height:3rem;margin:0.5rem 0;display:flex;align-items:center;padding:0 1rem}.section-loading .content-list li::before{content:'';width:100%;height:1rem;background:linear-gradient(90deg, transparent 25%, rgba(255,255,255,0.5) 50%, transparent 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-sm)}@keyframes shimmer{0%{background-position:-200% 0}100%{background-position:200% 0}}[data-tooltip]{position:relative}[data-tooltip]::before{content:attr(data-tooltip);position:absolute;bottom:100%;left:50%;transform:translateX(-50%);background:var(--text-primary);color:var(--bg-primary);padding:0.5rem 0.75rem;border-radius:var(--radius-sm);font-size:0.875rem;white-space:nowrap;opacity:0;visibility:hidden;transition:all var(--transition-fast);z-index:200;margin-bottom:0.5rem}[data-tooltip]::after{content:'';position:absolute;bottom:100%;left:50%;transform:translateX(-50%);border:5px solid transparent;border-top-color:var(--text-primary);opacity:0;visibility:hidden;transition:all var(--transition-fast);z-index:200}[data-tooltip]:hover::before,[data-tooltip]:hover::after{opacity:1;visibility:visible}.search-bar{position:relative;margin:1.5rem 0;max-width:400px}.search-bar input{width:100%;padding:0.75rem 1rem 0.75rem 2.5rem;border:2px solid var(--border-color);border-radius:var(--radius-md);font-size:1rem;transition:all var(--transition-fast);background:var(--bg-primary)}.search-bar input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(37,99,235,0.1)}.search-bar input::placeholder{color:var(--text-muted)}.search-bar .search-icon{position:absolute;left:0.75rem;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:1.25rem}.search-results .no-results{text-align:center;padding:2rem;color:var(--text-secondary);font-style:italic}.search-results .highlight{background:linear-gradient(135deg, rgba(245,158,11,0.2), rgba(245,158,11,0.3));padding:0.125rem 0.25rem;border-radius:var(--radius-sm);font-weight:600}