:root {
            --primary-dark: #1a1a1a;
            --secondary-dark: #2d2d2d;
            --accent-color: #c5a028;
            --accent-hover: #e0b63a;
            --text-primary: #f0f0f0;
            --text-secondary: #b0b0b0;
            --border-color: #444;
            --success-color: #4CAF50;
            --error-color: #f44336;
            --card-bg: rgba(40, 40, 40, 0.8);
            --section-padding: clamp(2rem, 5vw, 4rem);
            --content-width: min(1200px, 90vw);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--primary-dark);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            color: var(--accent-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--accent-hover);
        }
        .container {
            width: var(--content-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: rgba(26, 26, 26, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 0;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Orbitron', sans-serif;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-color);
            text-transform: uppercase;
            letter-spacing: 1px;
            background: linear-gradient(45deg, #c5a028, #e0b63a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            background: linear-gradient(45deg, #e0b63a, #f5c842);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-color);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: var(--secondary-dark);
            padding: 1rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: var(--text-secondary);
        }
        .hero {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://via.placeholder.com/1200x400/2d2d2d/444?text=EFT+Login+Mastery+Guide');
            background-size: cover;
            background-position: center;
            padding: var(--section-padding) 0;
            text-align: center;
            margin-bottom: 3rem;
            border-radius: 0 0 20px 20px;
        }
        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            color: var(--text-secondary);
        }
        .search-box {
            max-width: 600px;
            margin: 2rem auto;
            background: var(--card-bg);
            padding: 2rem;
            border-radius: 10px;
            border: 1px solid var(--border-color);
        }
        .search-box h2 {
            margin-bottom: 1rem;
            color: var(--accent-color);
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem 1rem;
            background-color: var(--secondary-dark);
            border: 1px solid var(--border-color);
            border-radius: 5px;
            color: var(--text-primary);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--accent-color);
            color: var(--primary-dark);
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 5px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }
        .search-form button:hover {
            background-color: var(--accent-hover);
        }
        main {
            padding-bottom: var(--section-padding);
        }
        .content-section {
            margin-bottom: 3rem;
            padding: 2rem;
            background-color: var(--card-bg);
            border-radius: 10px;
            border: 1px solid var(--border-color);
        }
        .content-section h2 {
            color: var(--accent-color);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
            font-size: 2rem;
        }
        .content-section h3 {
            color: var(--text-primary);
            margin: 1.5rem 0 1rem;
            font-size: 1.5rem;
        }
        .content-section h4 {
            color: var(--text-secondary);
            margin: 1rem 0 0.5rem;
            font-size: 1.2rem;
        }
        .content-section p {
            margin-bottom: 1rem;
            text-align: justify;
            hyphens: auto;
        }
        .content-section ul, .content-section ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        .content-section li {
            margin-bottom: 0.5rem;
        }
        .highlight {
            background-color: rgba(197, 160, 40, 0.1);
            border-left: 4px solid var(--accent-color);
            padding: 1rem;
            margin: 1.5rem 0;
            border-radius: 0 5px 5px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background-color: var(--secondary-dark);
            padding: 1.5rem;
            border-radius: 8px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: transform 0.3s ease;
        }
        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent-color);
        }
        .stat-card i {
            font-size: 2rem;
            color: var(--accent-color);
            margin-bottom: 1rem;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--accent-color);
            display: block;
            margin: 0.5rem 0;
        }
        .content-image {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 1.5rem auto;
            display: block;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 8px rgba(0,0,0,0.3);
            transition: transform 0.3s ease;
        }
        .content-image:hover {
            transform: scale(1.02);
        }
        .image-caption {
            text-align: center;
            color: var(--text-secondary);
            font-style: italic;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .interactive-box {
            background-color: var(--secondary-dark);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 2rem;
            margin: 2rem 0;
        }
        .tab-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1rem;
        }
        .tab {
            background-color: var(--primary-dark);
            padding: 1rem;
            border-radius: 5px;
            cursor: pointer;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        .tab:hover, .tab.active {
            background-color: var(--accent-color);
            color: var(--primary-dark);
            border-color: var(--accent-color);
        }
        .tab-content {
            display: none;
            padding: 1rem;
            background-color: var(--primary-dark);
            border-radius: 0 0 5px 5px;
            margin-top: -1px;
        }
        .tab-content.active {
            display: block;
        }
        .user-feedback {
            margin-top: 3rem;
            padding: 2rem;
            background-color: var(--card-bg);
            border-radius: 10px;
            border: 1px solid var(--border-color);
        }
        .rating-system {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
        }
        .star {
            font-size: 1.5rem;
            color: var(--border-color);
            cursor: pointer;
            transition: color 0.2s ease;
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .comment-form {
            display: grid;
            gap: 1rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 0.5rem;
            font-weight: 500;
        }
        .form-group input,
        .form-group textarea {
            padding: 0.8rem;
            background-color: var(--secondary-dark);
            border: 1px solid var(--border-color);
            border-radius: 5px;
            color: var(--text-primary);
            font-size: 1rem;
            resize: vertical;
        }
        .form-actions {
            display: flex;
            gap: 1rem;
            justify-content: flex-end;
        }
        .btn {
            padding: 0.8rem 1.5rem;
            border-radius: 5px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
        }
        .btn-primary {
            background-color: var(--accent-color);
            color: var(--primary-dark);
        }
        .btn-primary:hover {
            background-color: var(--accent-hover);
        }
        .btn-secondary {
            background-color: var(--secondary-dark);
            color: var(--text-primary);
            border: 1px solid var(--border-color);
        }
        .btn-secondary:hover {
            background-color: var(--border-color);
        }
        footer {
            background-color: var(--secondary-dark);
            padding: var(--section-padding) 0;
            border-top: 1px solid var(--border-color);
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--accent-color);
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        friend-link {
            display: block;
            background-color: var(--primary-dark);
            padding: 0.8rem 1rem;
            border-radius: 5px;
            margin-bottom: 0.5rem;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        friend-link:hover {
            border-color: var(--accent-color);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .last-updated {
            background-color: var(--primary-dark);
            padding: 0.5rem 1rem;
            border-radius: 5px;
            display: inline-block;
            margin: 1rem 0;
            font-size: 0.9rem;
            border: 1px solid var(--border-color);
        }
        @media (max-width: 1024px) {
            .container {
                width: 95%;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                background-color: var(--primary-dark);
                padding: 1rem;
                transition: left 0.3s ease;
                border-top: 1px solid var(--border-color);
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            .hamburger {
                display: block;
            }
            .header-content {
                flex-wrap: wrap;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .form-actions {
                flex-direction: column;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 2rem;
            }
            .content-section {
                padding: 1.5rem;
            }
            .content-section h2 {
                font-size: 1.8rem;
            }
            .tab-container {
                grid-template-columns: 1fr;
            }
        }
        @media print {
            .main-nav,
            .search-box,
            .user-feedback,
            footer {
                display: none;
            }
            body {
                background-color: white;
                color: black;
            }
            .container {
                width: 100%;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }