:root {
            --primary: #1d1d1f;
            --secondary: #86868b;
            --accent: #0071e3;
            --background: #ffffff;
            --card-bg: #f5f5f7;
            --section-padding: 6rem 1.5rem;
            --nav-height: 70px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            color: var(--primary);
            background-color: var(--background);
            line-height: 1.5;
            overflow-x: hidden;
        }

        /* Header & Navigation */
        header {
            position: sticky;
            top: 0;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(7px);
            z-index: 100;
            border-bottom: 1px solid rgba(0, 0, 0, 0.08);
            padding: 0 2rem;
            height: var(--nav-height);
        }

        .navbar {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 100%;
        }

        .logo {
            font-weight: 600;
            font-size: 1.5rem;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo i {
            color: var(--accent);
        }

        /* Desktop Navigation */
        .nav-container {
            display: flex;
            height: 100%;
        }

        .nav-links {
            display: flex;
            gap: 0;
            height: 100%;
        }

        .nav-item {
            position: relative;
            height: 100%;
        }

        .nav-link {
            text-decoration: none;
            color: var(--secondary);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0 1.5rem;
            height: 100%;
            display: flex;
            align-items: center;
            transition: all 0.3s;
        }

        .nav-item:hover .nav-link {
            color: var(--primary);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 18px;
            left: 15%;
            width: 0;
            height: 2px;
            background-color: var(--accent);
            transition: width 0.3s;
        }

        .nav-item:hover .nav-link::after {
            width: 70%;
        }

        /* Desktop Dropdown */
        .dropdown {
            position: absolute;
            top: var(--nav-height);
            left: 0;
            width: 220px;
            background: white;
            border-radius: 0 0 12px 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            padding: 1rem 0;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s ease;
            z-index: 100;
        }

        .nav-item:hover .dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .dropdown-link {
            display: block;
            padding: 0.7rem 1.5rem;
            text-decoration: none;
            color: var(--secondary);
            font-size: 0.9rem;
            transition: all 0.2s;
        }

        .dropdown-link:hover {
            color: var(--accent);
            background: rgba(0, 113, 227, 0.05);
        }

        /* Mobile Navigation */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--primary);
            z-index: 200;
        }

            .mobile-menu-btn i {
            z-index: 199;
        }

        .mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            height: 100%;
            background: white;
            z-index: 150;
            transition: all 0.4s ease;
            padding: var(--nav-height) 2rem 2rem;
            overflow-y: auto;
        }

        .mobile-menu.active {
            right: 0;
        }

        .mobile-menu-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.08);
            margin-bottom: 1rem;
        }

        .mobile-menu-title {
            font-size: 1.5rem;
            font-weight: 600;
        }

        .mobile-close-btn {
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--primary);
        }

        .mobile-nav-links {
            list-style: none;
        }

        .mobile-nav-item {
            border-bottom: 1px solid rgba(0, 0, 0, 0.08);
        }

        .mobile-nav-link {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.2rem 0;
            text-decoration: none;
            color: var(--primary);
            font-size: 1.1rem;
            font-weight: 500;
        }

        .mobile-submenu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            list-style: none;
            padding-left: 1.5rem;
        }

        .mobile-submenu.active {
            max-height: 500px;
        }

        .mobile-submenu-link {
            display: block;
            padding: 1rem 0;
            text-decoration: none;
            color: var(--secondary);
            font-size: 1rem;
        }

        .mobile-submenu-link:hover {
            color: var(--accent);
        }

        /* Hero Section */
        .hero {
            max-width: 1200px;
            margin: 0 auto;
            padding: var(--section-padding);
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-height: 80vh;
        }

        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 700;
            line-height: 1.1;
            margin-bottom: 1.5rem;
            max-width: 900px;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--secondary);
            max-width: 700px;
            margin-bottom: 3rem;
        }

        .cta-button {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 0.8rem 2.5rem;
            font-size: 1rem;
            font-weight: 500;
            border-radius: 30px;
            cursor: pointer;
            transition: all 0.3s;
            text-decoration: none;
            display: inline-block;
        }

        .cta-button:hover {
            background-color: #0077ed;
            box-shadow: 0 10px 20px rgba(0, 113, 227, 0.2);
        }

        /* Categories Section */
        .categories {
            padding: var(--section-padding);
            background-color: var(--card-bg);
        }

        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-header h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .section-header p {
            color: var(--secondary);
            max-width: 700px;
            margin: 0 auto;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        .category-card {
            background: white;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: all 0.3s;
        }

        .category-card:hover {
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }

        .card-icon {
            height: 180px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #f0f7ff, #e6f0ff);
            color: var(--accent);
            font-size: 3.5rem;
        }

        .card-content {
            padding: 2rem;
        }

        .card-content h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }

        .card-content p {
            color: var(--secondary);
            margin-bottom: 1.5rem;
        }

        .card-link {
            color: var(--accent);
            text-decoration: none;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: gap 0.3s;
        }

        .card-link:hover {
            gap: 0.8rem;
        }

        /* Footer */
        footer {
            background-color: var(--primary);
            color: white;
            padding: 4rem 2rem 2rem;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }

        .footer-column h3 {
            font-size: 1.25rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.75rem;
        }

        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background-color: var(--accent);
        }

        .footer-column ul {
            list-style: none;
        }

        .footer-column ul li {
            margin-bottom: 0.8rem;
        }

        .footer-column a {
            color: #a1a1a6;
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-column a:hover {
            color: white;
        }

        .copyright {
            max-width: 1200px;
            margin: 3rem auto 0;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            color: #86868b;
            font-size: 0.9rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .hero {
                padding: 4rem 1.5rem;
            }
            
            .section-header h2 {
                font-size: 2rem;
            }
        }

/* Page Wrapper */
.wrapper.page {
  max-width: 900px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

/* Typography */
.pageContent {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: #1d1d1f;
  line-height: 1.7;
  font-size: 1.1rem;
}

.pageContent h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 3rem 0 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

h2 {
  font-size: 2rem;
  font-weight: 600;
  margin: 2.5rem 0 1.2rem;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 2rem 0 1rem;
}

.pageContent p {
  margin: 1.5rem 0;
  text-align: justify;
}

/* Links */
.pageContent a, .link {
  color: #0071e3;
  text-decoration: none;
  transition: all 0.3s;
  position: relative;
}

.pageContent a:hover, .link:hover {
  color: #0056b3;
}

.pageContent a::after, .link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: #0071e3;
  transition: width 0.3s;
}

.pageContent a:hover::after, .link:hover::after {
  width: 100%;
}

/* Buttons */
.pageContent button {
  background-color: #0071e3;
  color: white;
  border: none;
  padding: 0.8rem 1.8rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-block;
  margin: 0.5rem 0;
}

.pageContent button:hover {
  background-color: #0056b3;
  box-shadow: 0 5px 15px rgba(0, 113, 227, 0.2);
}

/* Images */
.pageContent img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 2rem 0;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

/* Lists */
.pageContent ul, 
.pageContent ol {
  margin: 1.5rem 0;
  padding-left: 1.5rem;
}

.pageContent li {
  margin: 0.8rem 0;
  padding-left: 0.5rem;
}

.pageContent ul li::marker {
  color: #0071e3;
}

/* Blockquotes */
.pageContent blockquote {
  border-left: 4px solid #0071e3;
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background-color: #f5f5f7;
  border-radius: 0 8px 8px 0;
  font-style: italic;
}

.pageContent blockquote p {
  margin: 0;
  color: #555;
}

/* Code blocks */
.pageContent pre {
  background-color: #f5f5f7;
  padding: 1.5rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 2rem 0;
  font-size: 0.95rem;
  line-height: 1.5;
  border: 1px solid #e0e0e0;
}

.pageContent code {
  font-family: 'SF Mono', Menlo, monospace;
  background-color: #f5f5f7;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.95rem;
}

/* Tables */
.pageContent table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.pageContent th {
  background-color: #0071e3;
  color: white;
  text-align: left;
  padding: 0.8rem 1rem;
  font-weight: 600;
}

.pageContent td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid #e0e0e0;
}

.pageContent tr:nth-child(even) {
  background-color: #f9f9f9;
}

/* Callout boxes */
.pageContent .callout {
  padding: 1.5rem;
  border-radius: 8px;
  margin: 2rem 0;
  position: relative;
  overflow: hidden;
}

.pageContent .callout::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

.pageContent .callout.info {
  background-color: #e6f2ff;
}

.pageContent .callout.info::before {
  background-color: #0071e3;
}

.pageContent .callout.warning {
  background-color: #fff4e6;
}

.pageContent .callout.warning::before {
  background-color: #ff9500;
}

.pageContent .callout.tip {
  background-color: #e6f7ee;
}

.pageContent .callout.tip::before {
  background-color: #34c758;
}

.pageContent .callout-title {
  font-weight: 600;
  margin-top: 0;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .wrapper.page {
    padding: 2rem 1.5rem;
  }
  
  .page h1 {
    font-size: 2rem;
  }
  
  .page h2 {
    font-size: 1.7rem;
  }
  
  .page h3 {
    font-size: 1.3rem;
  }
  
  .page pre {
    padding: 1rem;
    font-size: 0.85rem;
  }
}