/* Base Reset & Variables */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        :root {
            --primary-blue: #0f294a;
            --accent-yellow: #ffc20e;
            --text-dark: #1e293b;
            --text-light: #64748b;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --success-green: #10b981;
            --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
            --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.07), 0 4px 6px -4px rgb(0 0 0 / 0.07);
        }

        body {
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-dark);
            background-color: #F7F7F7;
            line-height: 1.6;
        }

        /* Container Layout */
        .container {
            width: 100%;
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Responsive Navigation Menu */
        .navbar {
            background-color: var(--primary-blue);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
            border-bottom: 2px solid rgba(255, 255, 255, 0.1);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .nav-brand {
            color: var(--bg-white);
            font-size: 1.3rem;
            font-weight: 800;
            text-decoration: none;
            letter-spacing: -0.025em;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .nav-brand span {
            color: var(--accent-yellow);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 25px;
            list-style: none;
        }

        .nav-link {
            color: #cbd5e1;
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 600;
            transition: color 0.2s ease;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--accent-yellow);
        }

        /* Hamburger Toggle Button */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 10px;
        }

        .hamburger {
            display: block;
            width: 24px;
            height: 3px;
            background-color: var(--bg-white);
            position: relative;
            transition: background-color 0.3s ease;
        }

        .hamburger::before, .hamburger::after {
            content: '';
            position: absolute;
            width: 24px;
            height: 3px;
            background-color: var(--bg-white);
            left: 0;
            transition: transform 0.3s ease, top 0.3s ease;
        }

        .hamburger::before { top: -8px; }
        .hamburger::after { top: 8px; }

        /* Navigation Responsive Breakpoints */
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }

            .nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--primary-blue);
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease-in-out;
                border-bottom: 3px solid var(--accent-yellow);
                box-shadow: var(--shadow-md);
            }

            .nav-item {
                width: 100%;
            }

            .nav-link {
                display: block;
                padding: 15px 25px;
                border-top: 1px solid rgba(255, 255, 255, 0.05);
                color: var(--bg-white);
            }

            .nav-link:hover {
                background-color: rgba(255, 255, 255, 0.05);
                padding-left: 30px;
            }

            .nav-menu.open {
                max-height: 300px;
            }

            .nav-toggle.open .hamburger {
                background-color: transparent;
            }

            .nav-toggle.open .hamburger::before {
                transform: rotate(45deg);
                top: 0;
            }

            .nav-toggle.open .hamburger::after {
                transform: rotate(-45deg);
                top: 0;
            }
        }

        /* Header / Hero Section */
        header {
            background: linear-gradient(135deg, var(--primary-blue) 0%, #1e40af 100%);
            color: var(--bg-white);
            padding: 40px 0;
            text-align: center;
            border-bottom: 5px solid var(--accent-yellow);
        }

        h1 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 10px;
            letter-spacing: -0.025em;
            line-height: 1.2;
        }

        header p {
            color: var(--bg-white);
            font-size: 1.05rem;
            opacity: 0.95;
			text-align: center;
        }

        /* Responsive Image Section Rules */
        .responsive-image-container {
            display: flex;
			justify-content: center;
			align-items: center;    
			width: 100%;
            margin: 25px 0;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
        }
		
		.responsive-image {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }

        /* Responsive Table Section Rules */
        .table-container {
            width: 100%;
            margin: 25px 0 35px 0;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
        }

        .responsive-table {
            width: 100%;
            border-collapse: collapse;
            background-color: var(--bg-white);
            text-align: left;
            font-size: 0.95rem;
        }

        .responsive-table th {
            background-color: var(--primary-blue);
            color: var(--bg-white);
            padding: 14px 18px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .responsive-table td {
            padding: 14px 18px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-dark);
        }

        .responsive-table tr:last-child td {
            border-bottom: none;
        }

        .responsive-table tr:nth-child(even) {
            background-color: var(--bg-light);
        }

        /* Mobile Breakpoint Optimization for Table Stacking Layout */
        @media (max-width: 640px) {
            .responsive-table, 
            .responsive-table thead, 
            .responsive-table tbody, 
            .responsive-table th, 
            .responsive-table td, 
            .responsive-table tr {
                display: block;
            }

            .responsive-table thead {
                position: absolute;
                top: -9999px;
                left: -9999px;
            }

            .responsive-table tr {
                border-bottom: 2px solid var(--border-color);
                padding: 10px 0;
                background-color: var(--bg-white) !important;
            }

            .responsive-table tr:last-child {
                border-bottom: none;
            }

            .responsive-table td {
                border-bottom: 1px dashed var(--border-color);
                padding: 10px 15px;
                padding-left: 45%;
                position: relative;
                text-align: right;
                font-size: 0.9rem;
            }

            .responsive-table td:last-child {
                border-bottom: none;
            }

            .responsive-table td::before {
                content: attr(data-label);
                position: absolute;
                left: 15px;
                top: 10px;
                width: 40%;
                white-space: nowrap;
                text-align: left;
                font-weight: 700;
                color: var(--primary-blue);
            }
        }

        /* Main Content Layout */
        main {
            padding: 40px 0;
        }

        /* Typography Elements */
        h2 {
            font-size: 1.6rem;
            color: var(--primary-blue);
            margin-top: 35px;
            margin-bottom: 15px;
            font-weight: 700;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 8px;
        }

        h3 {
            font-size: 1.25rem;
            color: var(--primary-blue);
            margin-top: 25px;
            margin-bottom: 10px;
            font-weight: 600;
        }

        h4 {
            font-size: 1.05rem;
            color: var(--text-dark);
            margin-top: 15px;
            margin-bottom: 5px;
            font-weight: 600;
        }

        p {
            margin-bottom: 16px;
            color: var(--text-light);
            font-size: 1rem;
            text-align: justify;
        }

        strong {
            color: var(--text-dark);
        }

        /* About Page Card Styling */
        .method-card {
            background-color: var(--bg-white);
            padding: 35px;
            border-radius: 12px;
            margin-bottom: 20px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        @media (max-width: 480px) {
            .method-card {
                padding: 20px;
            }
            h1 { font-size: 1.6rem; }
            h2 { font-size: 1.35rem; }
            h3 { font-size: 1.15rem; }
        }

        /* Split Footer Styling */
        footer {
            background-color: var(--primary-blue);
            color: #94a3b8;
            padding: 30px 0;
            font-size: 0.9rem;
            border-top: 4px solid var(--accent-yellow);
            margin-top: 50px;
        }

        .footer-columns-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }

        .footer-column h3 {
            color: var(--accent-yellow);
            font-size: 1.1rem;
            font-weight: 700;
            margin-top: 0;
            margin-bottom: 15px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .footer-column p {
            color: #cbd5e1;
            font-size: 0.85rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        .footer-column ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-column ul li {
            margin-bottom: 8px;
        }

        .footer-column ul li:last-child {
            margin-bottom: 0;
        }

        .footer-column ul a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.85rem;
            transition: color 0.2s ease;
        }

        .footer-column ul a:hover {
            color: var(--accent-yellow);
        }

        .footer-row-divider {
            border: 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 25px;
        }

        .footer-wrap {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .footer-nav {
            display: flex;
            gap: 20px;
            list-style: none;
        }

        .footer-nav a {
            color: #94a3b8;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .footer-nav a:hover {
            color: var(--accent-yellow);
        }

        footer p {
            color: #94a3b8;
            margin-bottom: 0;
        }

        /* Original Scroll Top Button Styling */
        #scrollTopBtn {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background-color: var(--primary-blue);
            color: var(--accent-yellow);
            border: 2px solid var(--accent-yellow);
            width: 46px;
            height: 46px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: var(--shadow-md);
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.2s ease;
        }

        #scrollTopBtn.show {
            opacity: 1;
            visibility: visible;
        }

        #scrollTopBtn:hover {
            background-color: var(--accent-yellow);
            color: var(--primary-blue);
            transform: translateY(-3px);
        }

        /* Original Tablet & Mobile Adjustments */
        @media (max-width: 768px) {
            .footer-wrap {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .footer-nav {
                justify-content: center;
                gap: 25px;
            }
            #scrollTopBtn {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 16px;
            }
            .footer-columns-container {
                grid-template-columns: 1fr;
            }
            .footer-column {
                text-align: left;
            }
        }