:root{--primary-color: #FF548B;--primary-hover: #E63E75;--primary-light: #FFE8EF;--secondary-color: #01E884;--green-dark: #00A960;--text-color: #111827;--text-muted: #6B7280;--text-light: #9CA3AF;--bg-primary: #FFFFFF;--bg-secondary: #F9FAFB;--bg-tertiary: #F3F4F6;--bg-sidebar: #FAFBFC;--bg-hover: #FFF5F8;--border-color: #E5E7EB;--border-light: #F3F4F6;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-premium: 0 20px 40px -15px rgba(255, 84, 139, .15);--font-sans: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "Fira Code", "Monaco", "Consolas", monospace;--sidebar-width: 280px;--header-height: 64px;--content-max-width: 800px;--transition-fast: .15s ease;--transition-normal: .2s ease;--transition-slow: .3s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);color:var(--text-color);background-color:var(--bg-primary);line-height:1.6;overflow-x:hidden}::selection{background-color:var(--primary-color);color:#fff}.app-layout{display:flex;min-height:100vh}.sidebar{position:fixed;left:0;top:0;width:var(--sidebar-width);height:100vh;background:var(--bg-sidebar);border-right:1px solid var(--border-color);display:flex;flex-direction:column;z-index:100;transition:transform var(--transition-normal)}.sidebar-header{padding:1.25rem 1.5rem;border-bottom:1px solid var(--border-color);display:flex;align-items:center;gap:.75rem}.sidebar-logo{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--text-color)}.sidebar-logo img{height:28px;width:auto}.sidebar-logo-text{font-family:var(--font-sans);font-size:1.125rem;font-weight:700;color:var(--text-color)}.sidebar-logo-badge{font-size:.65rem;font-weight:600;color:var(--primary-color);background:var(--primary-light);padding:.15rem .5rem;border-radius:20px;text-transform:uppercase;letter-spacing:.5px}.sidebar-search{padding:1rem 1.25rem;border-bottom:1px solid var(--border-color)}.search-input{width:100%;padding:.625rem 1rem .625rem 2.5rem;font-size:.875rem;font-family:var(--font-body);border:1px solid var(--border-color);border-radius:8px;background:var(--bg-primary);color:var(--text-color);outline:none;transition:all var(--transition-fast)}.search-input:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #ff548b1a}.search-input::placeholder{color:var(--text-light)}.search-wrapper{position:relative}.search-icon{position:absolute;left:.875rem;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--text-light)}.sidebar-nav{flex:1;overflow-y:auto;padding:1rem 0}.nav-section{margin-bottom:.5rem}.nav-section-title{padding:.5rem 1.5rem;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-light)}.nav-item{display:flex;align-items:center;gap:.5rem;padding:.5rem 1.5rem;font-size:.875rem;color:var(--text-muted);text-decoration:none;border-left:3px solid transparent;transition:all var(--transition-fast);cursor:pointer}.nav-item:hover{background:var(--bg-hover);color:var(--text-color)}.nav-item.active{background:var(--bg-hover);color:var(--primary-color);border-left-color:var(--primary-color);font-weight:500}.nav-item-icon{width:18px;height:18px;flex-shrink:0;opacity:.7}.nav-group{margin-bottom:.25rem}.nav-group-header{display:flex;align-items:center;gap:.625rem;padding:.625rem 1.5rem;font-size:.875rem;font-weight:500;color:var(--text-color);cursor:pointer;transition:all var(--transition-fast)}.nav-group-header:hover{background:var(--bg-hover)}.nav-group-title{display:flex;align-items:center;justify-content:center;width:18px;height:18px;flex-shrink:0}.nav-group-title svg{width:16px;height:16px;color:var(--text-muted)}.nav-group.open .nav-group-title svg,.nav-group-header:hover .nav-group-title svg{color:var(--primary-color)}.nav-group-text{flex:1}.nav-group-icon{width:6px;height:6px;border-right:1.5px solid var(--text-muted);border-bottom:1.5px solid var(--text-muted);transform:rotate(-45deg);transition:transform var(--transition-fast);margin-left:auto}.nav-group.open .nav-group-icon{transform:rotate(45deg)}.nav-group-items{max-height:0;overflow:hidden;transition:max-height var(--transition-slow)}.nav-group.open .nav-group-items{max-height:1000px}.nav-subitem{display:flex;align-items:center;gap:.5rem;padding:.5rem 1.5rem;font-size:.8125rem;color:var(--text-muted);text-decoration:none;border-left:3px solid transparent;transition:all var(--transition-fast)}.nav-subitem-icon{display:flex;align-items:center;justify-content:center;width:18px;height:18px;flex-shrink:0;opacity:.6}.nav-subitem-icon svg{width:14px;height:14px}.nav-subitem:hover .nav-subitem-icon{opacity:1}.nav-subitem.active .nav-subitem-icon{opacity:1;color:var(--primary-color)}.nav-subitem-text{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nav-subitem:hover{background:var(--bg-hover);color:var(--text-color)}.nav-subitem.active{background:var(--bg-hover);color:var(--primary-color);border-left-color:var(--primary-color)}.main-content{flex:1;margin-left:var(--sidebar-width);min-height:100vh;display:flex;flex-direction:column}.content-header{position:sticky;top:0;height:var(--header-height);background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 2rem;z-index:50}.breadcrumb{display:flex;align-items:center;gap:.5rem;font-size:.875rem;color:var(--text-muted)}.breadcrumb a{color:var(--text-muted);text-decoration:none;transition:color var(--transition-fast)}.breadcrumb a:hover{color:var(--primary-color)}.breadcrumb-separator{color:var(--text-light)}.header-actions{display:flex;align-items:center;gap:.75rem}.header-btn{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;font-size:.8125rem;font-weight:500;color:var(--text-muted);background:transparent;border:1px solid var(--border-color);border-radius:6px;cursor:pointer;transition:all var(--transition-fast)}.header-btn:hover{border-color:var(--primary-color);color:var(--primary-color)}.article-wrapper{flex:1;display:flex;justify-content:center;padding:2.5rem 3rem}.article-content{width:100%;max-width:var(--content-max-width)}.markdown-body{font-family:var(--font-body);color:var(--text-color);line-height:1.75}.markdown-body h1{font-family:var(--font-sans);font-size:2.25rem;font-weight:700;margin-bottom:1.5rem;padding-bottom:.75rem;border-bottom:1px solid var(--border-color);color:var(--text-color)}.markdown-body h2{font-family:var(--font-sans);font-size:1.5rem;font-weight:600;margin-top:2.5rem;margin-bottom:1rem;color:var(--text-color)}.markdown-body h3{font-family:var(--font-sans);font-size:1.25rem;font-weight:600;margin-top:2rem;margin-bottom:.75rem;color:var(--text-color)}.markdown-body h4{font-family:var(--font-sans);font-size:1.125rem;font-weight:600;margin-top:1.5rem;margin-bottom:.5rem;color:var(--text-color)}.markdown-body p{margin-bottom:1.25rem}.markdown-body strong{font-weight:600;color:var(--text-color)}.markdown-body a{color:var(--primary-color);text-decoration:none;border-bottom:1px solid transparent;transition:border-color var(--transition-fast)}.markdown-body a:hover{border-bottom-color:var(--primary-color)}.markdown-body ul,.markdown-body ol{margin-bottom:1.25rem;padding-left:1.5rem}.markdown-body li{margin-bottom:.5rem}.markdown-body li::marker{color:var(--primary-color)}.markdown-body code{font-family:var(--font-mono);font-size:.875em;background:var(--bg-tertiary);padding:.15rem .4rem;border-radius:4px;color:var(--primary-hover)}.markdown-body pre{background:#1a1a2e;color:#e8e8e8;padding:1.25rem;border-radius:8px;overflow-x:auto;margin-bottom:1.5rem}.markdown-body pre code{background:transparent;padding:0;color:inherit}.markdown-body blockquote{border-left:4px solid var(--primary-color);background:var(--bg-hover);padding:1rem 1.25rem;margin:1.5rem 0;border-radius:0 8px 8px 0}.markdown-body blockquote p{margin-bottom:0}.markdown-body hr{border:none;border-top:1px solid var(--border-color);margin:2.5rem 0}.markdown-body table{width:100%;border-collapse:collapse;margin-bottom:1.5rem}.markdown-body th,.markdown-body td{padding:.75rem 1rem;border:1px solid var(--border-color);text-align:left}.markdown-body th{background:var(--bg-secondary);font-weight:600}.markdown-body img{max-width:100%;height:auto;border-radius:8px;margin:1rem 0}.callout{padding:1rem 1.25rem;border-radius:8px;margin:1.5rem 0;display:flex;gap:.75rem}.callout-info{background:#eff6ff;border:1px solid #BFDBFE}.callout-warning{background:#fffbeb;border:1px solid #FDE68A}.callout-tip{background:#ecfdf5;border:1px solid #A7F3D0}.article-nav{display:flex;justify-content:space-between;gap:1rem;margin-top:3rem;padding-top:2rem;border-top:1px solid var(--border-color)}.article-nav-link{flex:1;display:flex;flex-direction:column;padding:1rem 1.25rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;text-decoration:none;transition:all var(--transition-fast)}.article-nav-link:hover{border-color:var(--primary-color);background:var(--bg-hover)}.article-nav-link.next{text-align:right}.article-nav-label{font-size:.75rem;font-weight:500;text-transform:uppercase;letter-spacing:.05em;color:var(--text-light);margin-bottom:.25rem}.article-nav-title{font-size:.9375rem;font-weight:500;color:var(--text-color)}.content-footer{padding:1.5rem 2rem;border-top:1px solid var(--border-color);text-align:center;font-size:.8125rem;color:var(--text-light)}.content-footer a{color:var(--primary-color);text-decoration:none}.mobile-menu-btn{display:none;position:fixed;bottom:1.5rem;right:1.5rem;width:56px;height:56px;background:var(--primary-color);color:#fff;border:none;border-radius:50%;cursor:pointer;box-shadow:var(--shadow-lg),var(--shadow-premium);z-index:200;transition:all var(--transition-fast)}.mobile-menu-btn:hover{background:var(--primary-hover);transform:scale(1.05)}.mobile-menu-btn svg{width:24px;height:24px}.sidebar-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:90;opacity:0;transition:opacity var(--transition-normal)}.sidebar-overlay.active{opacity:1}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-light)}.home-hero{text-align:center;padding:3rem 0 2rem}.home-hero h1{font-family:var(--font-sans);font-size:2.5rem;font-weight:700;margin-bottom:.75rem;background:linear-gradient(135deg,var(--text-color) 0%,var(--text-muted) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.home-hero p{font-size:1.125rem;color:var(--text-muted);max-width:600px;margin:0 auto}.home-search{max-width:500px;margin:2rem auto}.home-search .search-input{padding:1rem 1.25rem 1rem 3rem;font-size:1rem;border-radius:12px;box-shadow:var(--shadow-md)}.home-search .search-icon{left:1rem;width:20px;height:20px}.home-categories{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.25rem;margin-top:3rem}.category-card{display:flex;flex-direction:column;padding:1.5rem;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:12px;text-decoration:none;transition:all var(--transition-normal)}.category-card:hover{border-color:var(--primary-color);box-shadow:var(--shadow-premium);transform:translateY(-2px)}.category-icon{width:48px;height:48px;background:var(--primary-light);border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:1rem}.category-icon svg{width:24px;height:24px;color:var(--primary-color)}.category-card h3{font-family:var(--font-sans);font-size:1.125rem;font-weight:600;color:var(--text-color);margin-bottom:.5rem}.category-card p{font-size:.875rem;color:var(--text-muted);line-height:1.5}.category-articles{margin-top:auto;padding-top:1rem;font-size:.8125rem;color:var(--text-light)}.search-results{margin-top:1rem}.search-result-item{display:block;padding:1rem 1.25rem;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:8px;text-decoration:none;margin-bottom:.5rem;transition:all var(--transition-fast)}.search-result-item:hover{border-color:var(--primary-color);background:var(--bg-hover)}.search-result-title{font-weight:500;color:var(--text-color);margin-bottom:.25rem}.search-result-excerpt{font-size:.875rem;color:var(--text-muted)}.search-result-category{font-size:.75rem;color:var(--primary-color);margin-top:.5rem}.empty-state{text-align:center;padding:4rem 2rem}.empty-state-icon{width:80px;height:80px;margin:0 auto 1.5rem;opacity:.4}.empty-state h3{font-family:var(--font-sans);font-size:1.25rem;font-weight:600;color:var(--text-color);margin-bottom:.5rem}.empty-state p{color:var(--text-muted)}.loading{display:flex;align-items:center;justify-content:center;padding:4rem}.loading-spinner{width:40px;height:40px;border:3px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 1024px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-overlay{display:block}.main-content{margin-left:0}.mobile-menu-btn{display:flex;align-items:center;justify-content:center}.article-wrapper{padding:1.5rem}.content-header{padding:0 1.5rem}}@media (max-width: 640px){.markdown-body h1{font-size:1.75rem}.markdown-body h2{font-size:1.25rem}.home-hero h1{font-size:1.75rem}.home-hero p{font-size:1rem}.home-categories{grid-template-columns:1fr}.article-nav{flex-direction:column}.article-nav-link.next{text-align:left}.breadcrumb{font-size:.8125rem}.header-actions{display:none}}