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

        :root {
            --primary: #0F6FFF;
            --primary-dark: #0052CC;
            --primary-light: #E6F0FF;
            --secondary: #00C9A7;
            --accent: #FF6B35;
            --dark: #1A202C;
            --dark-alt: #2D3748;
            --light: #F7FAFC;
            --border: #E2E8F0;
            --success: #10B981;
            --warning: #F59E0B;
            --error: #EF4444;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', sans-serif;
            color: var(--dark);
            background-color: var(--light);
            line-height: 1.6;
        }

        /* Typography */
        h1 {
            font-size: 2.5rem;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 0.5rem;
            color: var(--dark);
        }

        h2 {
            font-size: 1.875rem;
            font-weight: 700;
            line-height: 1.2;
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--dark);
            border-bottom: 3px solid var(--primary);
            padding-bottom: 0.5rem;
        }

        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
            color: var(--dark);
        }

        h4 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-top: 1rem;
            margin-bottom: 0.5rem;
            color: var(--dark-alt);
        }

        p {
            margin-bottom: 1rem;
            color: #4A5568;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        strong {
            font-weight: 600;
            color: var(--dark);
        }

        /* Layout */
        .header {
            background: linear-gradient(135deg, #0F6FFF 0%, #00C9A7 100%);
            color: white;
            padding: 3rem 2rem;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .header-content {
            max-width: 1400px;
            margin: 0 auto;
        }

        .header h1 {
            color: white;
            margin-bottom: 0.5rem;
        }

        .header-meta {
            font-size: 0.95rem;
            opacity: 0.95;
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
        }

        .sidebar {
            position: fixed;
            left: 0;
            top: 120px;
            width: 280px;
            max-height: calc(100vh - 120px);
            overflow-y: auto;
            background: white;
            border-right: 1px solid var(--border);
            padding: 2rem 1.5rem;
            display: none;
        }

        .sidebar.active {
            display: block;
        }

        .main-content {
            flex: 1;
            padding: 3rem 2rem;
        }

        @media (min-width: 1024px) {
            .container {
                grid-template-columns: 280px 1fr;
            }

            .sidebar {
                display: block;
            }

            .main-content {
                padding: 3rem;
            }
        }

        /* Table of Contents / Sidebar Navigation */
        .toc-section {
            margin-bottom: 2rem;
        }

        .toc-section h4 {
            font-size: 0.875rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--primary);
            margin-bottom: 0.75rem;
            margin-top: 0;
        }

        .toc-links {
            list-style: none;
        }

        .toc-links li {
            margin-bottom: 0.5rem;
        }

        .toc-links a {
            font-size: 0.9rem;
            color: var(--dark-alt);
            display: block;
            padding: 0.5rem 1rem;
            border-radius: 0.375rem;
            transition: all 0.2s ease;
        }

        .toc-links a:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            text-decoration: none;
        }

        /* Sections */
        section {
            margin-bottom: 4rem;
        }

        section > h2 {
            scroll-margin-top: 150px;
        }

        /* Tables */
        table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 1.5rem;
            background: white;
            border-radius: 0.5rem;
            overflow: hidden;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
        }

        thead {
            background: linear-gradient(135deg, #0F6FFF 0%, #0052CC 100%);
            color: white;
        }

        th {
            padding: 1.25rem 1rem;
            text-align: left;
            font-weight: 600;
            font-size: 0.95rem;
        }

        td {
            padding: 1rem;
            border-bottom: 1px solid var(--border);
            font-size: 0.95rem;
        }

        tbody tr:last-child td {
            border-bottom: none;
        }

        tbody tr:nth-child(even) {
            background-color: #F9FAFB;
        }

        tbody tr:hover {
            background-color: var(--primary-light);
        }

        /* Code Blocks */
        pre {
            background: var(--dark);
            color: #E2E8F0;
            padding: 1.5rem;
            border-radius: 0.5rem;
            overflow-x: auto;
            margin-bottom: 1.5rem;
            font-family: 'Source Code Pro', monospace;
            font-size: 0.875rem;
            line-height: 1.5;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }

        code {
            font-family: 'Source Code Pro', monospace;
        }

        pre code {
            background: none;
            color: inherit;
            padding: 0;
            font-size: inherit;
        }

        /* Inline code */
        p code, li code {
            background: var(--light);
            color: var(--accent);
            padding: 0.25rem 0.5rem;
            border-radius: 0.25rem;
            font-size: 0.9em;
        }

        /* Lists */
        ul, ol {
            margin-left: 1.5rem;
            margin-bottom: 1rem;
        }

        li {
            margin-bottom: 0.5rem;
            color: #4A5568;
        }

        /* Cards & Boxes */
        .card {
            background: white;
            border-radius: 0.5rem;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            border-left: 4px solid var(--primary);
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .card:hover {
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        .card.accent {
            border-left-color: var(--secondary);
            background: linear-gradient(135deg, rgba(0, 201, 167, 0.05) 0%, rgba(15, 111, 255, 0.05) 100%);
        }

        .card.warning {
            border-left-color: var(--warning);
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.05) 0%, rgba(245, 158, 11, 0.02) 100%);
        }

        .email-template {
            background: white;
            border: 1px solid var(--border);
            border-radius: 0.5rem;
            padding: 0;
            margin-bottom: 2rem;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .email-header {
            background: linear-gradient(135deg, #0F6FFF 0%, #00C9A7 100%);
            color: white;
            padding: 1.5rem;
            font-weight: 600;
            font-size: 1.1rem;
        }

        .email-subject {
            font-size: 0.9rem;
            opacity: 0.9;
            margin-top: 0.5rem;
            font-weight: 400;
        }

        .email-content {
            padding: 2rem;
            font-size: 0.95rem;
            line-height: 1.6;
            color: #4A5568;
        }

        .email-content p {
            margin-bottom: 1rem;
        }

        .social-post {
            background: white;
            border: 1px solid var(--border);
            border-radius: 0.5rem;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            max-width: 500px;
        }

        .social-post.twitter {
            border-top: 3px solid #1DA1F2;
        }

        .social-post.linkedin {
            border-top: 3px solid #0A66C2;
        }

        .social-post-platform {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .social-post-content {
            font-size: 0.95rem;
            line-height: 1.6;
            color: var(--dark);
            margin-bottom: 1rem;
            white-space: pre-wrap;
        }

        .social-post-stats {
            display: flex;
            gap: 1.5rem;
            font-size: 0.85rem;
            color: #718096;
            padding-top: 1rem;
            border-top: 1px solid var(--border);
        }

        /* Messaging Pillars */
        .pillar-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .pillar-card {
            background: white;
            border-radius: 0.5rem;
            padding: 2rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            border-top: 4px solid var(--primary);
            transition: all 0.3s ease;
        }

        .pillar-card:hover {
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
            transform: translateY(-4px);
        }

        .pillar-card.pillar-2 {
            border-top-color: var(--secondary);
        }

        .pillar-card.pillar-3 {
            border-top-color: var(--accent);
        }

        .pillar-card.pillar-4 {
            border-top-color: #8B5CF6;
        }

        .pillar-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--dark);
        }

        .pillar-message {
            font-size: 0.95rem;
            color: #4A5568;
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid var(--border);
        }

        .pillar-label {
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 0.25rem;
        }

        /* Pricing Table */
        .pricing-table {
            margin: 2rem 0;
        }

        .pricing-table table {
            margin-top: 1.5rem;
        }

        /* Brand Guidelines Section */
        .brand-element {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .color-swatch {
            border-radius: 0.5rem;
            padding: 2rem;
            color: white;
            text-align: center;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .color-swatch.primary {
            background: var(--primary);
        }

        .color-swatch.secondary {
            background: var(--secondary);
        }

        .color-swatch.accent {
            background: var(--accent);
        }

        .color-swatch.dark {
            background: var(--dark);
        }

        .color-code {
            font-size: 0.85rem;
            opacity: 0.9;
            margin-top: 0.5rem;
            font-family: 'Source Code Pro', monospace;
        }

        /* Campaign Sections */
        .campaign-section {
            background: white;
            border-radius: 0.5rem;
            padding: 2rem;
            margin-bottom: 2rem;
            border-left: 5px solid var(--primary);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .campaign-section h3 {
            color: var(--dark);
            margin-top: 0;
            margin-bottom: 1.5rem;
        }

        /* Objection Handling */
        .objection {
            background: linear-gradient(135deg, #F0F9FF 0%, #F0FDF4 100%);
            border-radius: 0.5rem;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            border-left: 4px solid var(--warning);
        }

        .objection-label {
            font-weight: 700;
            color: var(--primary);
            display: block;
            margin-bottom: 0.5rem;
        }

        .objection-text {
            color: #4A5568;
            font-style: italic;
            margin-bottom: 1rem;
        }

        .response-label {
            font-weight: 600;
            color: var(--success);
            display: block;
            margin-bottom: 0.5rem;
            margin-top: 1rem;
        }

        .response-text {
            color: #4A5568;
        }

        /* Highlights */
        .highlight-stat {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 0.25rem;
            font-weight: 700;
            margin: 0.25rem;
        }

        .highlight-number {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
        }

        /* Document Header */
        .doc-header {
            background: white;
            border-bottom: 2px solid var(--border);
            padding: 2rem;
            margin-bottom: 2rem;
            border-radius: 0.5rem;
        }

        .doc-version {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
            font-size: 0.95rem;
            color: #718096;
        }

        .doc-version-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .doc-version-label {
            font-weight: 600;
            color: var(--dark);
        }

        /* Responsive */
        @media (max-width: 768px) {
            h1 {
                font-size: 1.875rem;
            }

            h2 {
                font-size: 1.5rem;
            }

            h3 {
                font-size: 1.25rem;
            }

            .header {
                padding: 2rem 1rem;
            }

            .main-content {
                padding: 1.5rem;
            }

            .header-meta {
                flex-direction: column;
                gap: 0.5rem;
                font-size: 0.85rem;
            }

            table {
                font-size: 0.85rem;
            }

            th, td {
                padding: 0.75rem 0.5rem;
            }

            pre {
                padding: 1rem;
                font-size: 0.75rem;
            }

            .pillar-grid {
                grid-template-columns: 1fr;
            }

            .social-post {
                max-width: 100%;
            }

            .brand-element {
                grid-template-columns: 1fr;
            }
        }

        /* Print Styles */
        @media print {
            .header {
                background: var(--primary);
                color: white;
                position: relative;
                top: 0;
            }

            .sidebar {
                display: none;
            }

            .container {
                grid-template-columns: 1fr;
            }

            .main-content {
                padding: 0;
            }

            section {
                page-break-inside: avoid;
                margin-bottom: 2rem;
            }

            h2 {
                page-break-after: avoid;
                page-break-before: always;
            }

            .card, .email-template, .social-post, .campaign-section {
                page-break-inside: avoid;
                box-shadow: none;
                border: 1px solid var(--border);
            }

            a {
                color: var(--primary);
            }

            table {
                page-break-inside: avoid;
            }

            body {
                background: white;
            }

            .color-swatch {
                box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            }
        }

        /* Utility Classes */
        .text-muted {
            color: #718096;
        }

        .mt-2 {
            margin-top: 1rem;
        }

        .mb-2 {
            margin-bottom: 1rem;
        }

        .mt-4 {
            margin-top: 2rem;
        }

        .mb-4 {
            margin-bottom: 2rem;
        }

        .divider {
            height: 2px;
            background: linear-gradient(90deg, var(--border) 0%, transparent 100%);
            margin: 2rem 0;
        }

        /* Mobile Menu Toggle */
        .menu-toggle {
            display: none;
            background: var(--primary);
            color: white;
            border: none;
            padding: 0.75rem 1rem;
            border-radius: 0.375rem;
            cursor: pointer;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        @media (max-width: 1023px) {
            .menu-toggle {
                display: block;
            }

            .sidebar {
                position: relative;
                width: 100%;
                max-height: none;
                border-right: none;
                border-bottom: 1px solid var(--border);
                top: 0;
                padding: 1.5rem;
                margin-bottom: 2rem;
                display: none;
            }

            .sidebar.active {
                display: block;
            }
        }

        /* Accessibility */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border-width: 0;
        }

        /* Animations */
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        section {
            animation: fadeIn 0.3s ease-out;
        }

        /* Back to Top Button */
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: var(--primary);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            z-index: 50;
            border: none;
            font-size: 1.5rem;
        }

        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }

        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .back-to-top {
                width: 45px;
                height: 45px;
                bottom: 1rem;
                right: 1rem;
            }
        }