/* Container style isolation */
    #guide-content {
        --primary-blue: #0056b3;       /* Main color: Dark Blue */
        --secondary-blue: #e3f2fd;     /* Background: Light Blue */
        --accent-orange: #ff9800;      /* Accent: Orange */
        --text-dark: #333333;          /* Text: Dark Gray */
        --text-light: #555555;         /* Text: Light Gray */
        --white: #ffffff;
        --border-color: #dee2e6;
        
        /* Font settings */
        font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        font-size: 16px;
        line-height: 1.6;
        color: var(--text-dark);
        background-color: #f9f9f9;
        
        /* Container border and spacing */
        border: 1px solid #eee; 
        border-radius: 8px;
        margin-top: 20px;
        overflow: hidden; /* Prevent border-radius overflow */
    }

    /* Ensure correct box-sizing within container */
    #guide-content * {
        box-sizing: border-box;
    }

    /* Internal Header */
    #guide-content header {
        background-color: var(--primary-blue);
        color: var(--white);
        padding: 35px 20px;
        text-align: center;
    }

    #guide-content header h1 {
        font-size: 28px;
        margin: 0 0 10px 0;
        font-weight: 700;
        color: #fff;
        line-height: 1.2;
    }

    #guide-content header p {
        font-size: 16px;
        color: var(--accent-orange);
        font-weight: 600;
        margin: 0;
        opacity: 1;
    }

    /* Internal Navigation Bar */
    #guide-content nav {
        background-color: #004494;
        padding: 10px 0;
        position: sticky; 
        top: 0;
        z-index: 100;
    }

    #guide-content nav ul {
        list-style: none;
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 15px;
        margin: 0;
        padding: 0;
    }

    #guide-content nav a {
        color: var(--white);
        text-decoration: none;
        font-weight: 500;
        font-size: 14px;
        padding: 6px 12px;
        transition: all 0.3s;
        border-radius: 4px;
    }

    #guide-content nav a:hover {
        background-color: rgba(255, 255, 255, 0.15);
        color: var(--accent-orange);
    }

    /* Main Content Area */
    #guide-content .inner-content {
        padding: 25px;
    }

    /* General Section Styles */
    #guide-content section {
        background: var(--white);
        border-radius: 8px;
        padding: 30px;
        margin-bottom: 30px;
        box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        border-top: 4px solid var(--accent-orange);
        scroll-margin-top: 60px; /* Offset for sticky nav */
    }

    /* H2 Headings - Set to 22px */
    #guide-content h2 {
        color: var(--primary-blue);
        font-size: 22px; 
        font-weight: 700;
        margin-top: 0;
        margin-bottom: 20px;
        border-bottom: 2px solid var(--secondary-blue);
        padding-bottom: 12px;
        line-height: 1.4;
    }

    /* H3 Headings */
    #guide-content h3 {
        color: #003d80;
        font-size: 18px;
        margin-top: 25px;
        margin-bottom: 15px;
        font-weight: 600;
    }

    /* H4 Headings */
    #guide-content h4 {
        color: var(--text-dark);
        font-size: 16px;
        margin-top: 0;
        margin-bottom: 10px;
        font-weight: 700;
    }

    /* Paragraphs */
    #guide-content p {
        margin-bottom: 15px;
        color: var(--text-light);
        text-align: justify;
    }

    /* Lists */
    #guide-content ul, #guide-content ol {
        margin-left: 20px;
        margin-bottom: 20px;
        color: var(--text-light);
    }
    
    #guide-content li {
        margin-bottom: 8px;
    }

    /* Card Grid Layout */
    #guide-content .card-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 25px;
        margin-top: 20px;
    }

    #guide-content .card {
        background: #fff;
        border: 1px solid var(--border-color);
        border-radius: 6px;
        padding: 25px;
        transition: transform 0.2s, box-shadow 0.2s;
    }

    #guide-content .card:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        border-color: var(--accent-orange);
    }

    #guide-content .card h4 {
        color: var(--primary-blue);
        font-size: 18px;
        border-bottom: 1px solid #eee;
        padding-bottom: 10px;
        margin-bottom: 15px;
    }

    /* Warning and Highlight Boxes */
    #guide-content .highlight-box {
        background-color: var(--secondary-blue);
        border-left: 5px solid var(--primary-blue);
        padding: 20px;
        margin: 25px 0;
        border-radius: 4px;
    }

    #guide-content .warning-box {
        background-color: #fff3e0;
        border-left: 5px solid var(--accent-orange);
        padding: 20px;
        margin: 25px 0;
        border-radius: 4px;
    }

    #guide-content .warning-title {
        color: #d35400; /* Darker orange for text */
        font-weight: 700;
        display: block;
        margin-bottom: 10px;
        font-size: 18px;
    }

    /* Mobile Adaptability */
    @media (max-width: 768px) {
        #guide-content nav ul { flex-direction: column; align-items: center; gap: 8px; }
        #guide-content header h1 { font-size: 24px; }
        #guide-content .card-grid { grid-template-columns: 1fr; }
        #guide-content section { padding: 20px; }
    }