:root {
            --primary-blue: #007CC7;
            --dark-blue: #12232E;
            --purple: #3C1874;
            --light-bg: #F3F3F3;
            --success: #7EBC59;
            --warning: #FFD66C;
            --white: #fff;
            --text-dark: #202020;
            --text-gray: #555;
        }

        header h1 {
            font-size: 1.5rem;
            color: var(--white);
            font-weight: 700;
        }
        /* Hero Banner */
        .hero-banner {
            background: linear-gradient(135deg, var(--dark-blue) 0%, var(--purple) 100%);
            display: flex;
            align-items: center;
            padding: 4rem 0;
        }

        .hero-banner .container {
            text-align: center;
        }

        .hero-banner h1 {
            color: var(--white);
            margin-bottom: 1rem;
            font-weight: 700;
        }

        .hero-banner p {
            color: rgba(255,255,255,0.9);
            margin-bottom: 2.5rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Search Form */
        .search-form {
            max-width: 700px;
            margin: 0 auto 2rem;
            position: relative;
        }

        .search-form input {
            width: 100%;
            padding: 1.2rem 9rem 1.2rem 1.5rem;
            font-size: 1.1rem;
            border: none;
            border-radius: 50px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.3);
        }

        .search-form button {
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary-blue);
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            color: var(--white);
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
        }

        .search-form button:hover,
        .search-form button:focus {
            background: #005fa3;
            outline: 2px solid var(--white);
        }
/* H2 text */
        /* CTA Links */
        .cta-links {
            display: flex;
            gap: 1.5rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 3rem;
        }


        .btn-secondary {
            background: linear-gradient(135deg, #7B2CBF 0%, #5A189A 100%);
            color: var(--white);
        }

        .btn-secondary:hover,
        .btn-secondary:focus {
            transform: translateY(-2px);
            box-shadow: 0 5px 20px rgba(123, 44, 191, 0.4);
        }

        /* Trust Indicators */
        .trust-indicators {
            display: flex;
            justify-content: center;
            gap: 3rem;
            flex-wrap: wrap;
            font-size: 0.95rem;
            color: rgba(255,255,255,0.9);
        }

        .trust-indicators span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        /* Content Blocks */
        .content-block {
            padding: 5rem 0;
        }

        .content-block h2 {
            text-align: center;
            margin-bottom: 3rem;
            color: var(--dark-blue);
        }

        .bg-gradient {
            background: linear-gradient(to bottom, var(--white) 0%, #EEFBFB 100%);
        }

        .bg-warning {
            background: #FFF9E6;
            border-top: 3px solid var(--warning);
            border-bottom: 3px solid var(--warning);
        }

        /* Hubs Grid */
        .hubs-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        article.hub-card {
            background: var(--white);
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
            text-align: center;
            transition: transform 0.3s;
        }

        article.hub-card:hover {
            transform: translateY(-8px);
        }

        article.hub-card h3 {
            font-size: 1.75rem;
            margin: 1.5rem 0 0.5rem;
            color: var(--dark-blue);
        }

        .hub-count {
            color: var(--primary-blue);
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .categories {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            justify-content: center;
            margin-bottom: 1.5rem;
        }

        .category-tag {
            background: var(--light-bg);
            padding: 0.4rem 1rem;
            border-radius: 20px;
            font-size: 0.9rem;
            color: var(--text-gray);
        }

        /* Methods Grid */
        .methods-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        .method-card {
            background: var(--white);
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 3px 15px rgba(0,0,0,0.06);
        }

        .method-card h3 {
            font-size: 1.25rem;
            margin-bottom: 0.75rem;
            color: var(--dark-blue);
        }

        .badge {
            display: inline-block;
            background: var(--success);
            color: var(--white);
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.8rem;
            margin-bottom: 1rem;
        }

        .method-card p {
            font-size: 0.95rem;
            color: var(--text-gray);
            margin-bottom: 1rem;
        }

        .method-card a {
            color: var(--primary-blue);
            text-decoration: none;
            font-weight: 600;
        }

        /* Guides Grid */
        .guides-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        article.guide-card {
            background: var(--white);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 3px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s;
        }

        article.guide-card:hover {
            transform: translateY(-5px);
        }

        .guide-image {
            width: 100%;
            height: 200px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
        }

        .guide-content {
            padding: 1.5rem;
        }

        .guide-category {
            background: var(--primary-blue);
            color: var(--white);
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.8rem;
            display: inline-block;
            margin-bottom: 0.75rem;
        }

        article.guide-card h3 {
            font-size: 1.25rem;
            margin-bottom: 0.75rem;
            color: var(--dark-blue);
        }

        .guide-excerpt {
            font-size: 0.95rem;
            color: #666;
            margin-bottom: 1rem;
        }

        time {
            font-size: 0.85rem;
            color: #999;
        }

        /* Use Cases Grid */
        .use-cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .use-case {
            text-align: center;
            padding: 1.5rem;
        }

        .use-case h3 {
            font-size: 1.25rem;
            margin: 1rem 0 0.75rem;
            color: var(--dark-blue);
        }

        .use-case p {
            font-size: 0.95rem;
            color: var(--text-gray);
        }

        .trust-badges {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .trust-badge {
            background: var(--white);
            padding: 0.75rem 1.5rem;
            border-radius: 25px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.08);
            font-size: 0.95rem;
        }

        /* Security Grid */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .security-column h3 {
            font-size: 1.25rem;
            margin-bottom: 1rem;
            color: var(--dark-blue);
        }

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

        .security-column li {
            padding: 0.5rem 0 0.5rem 1.5rem;
            position: relative;
            font-size: 0.95rem;
            color: var(--text-gray);
        }

        .security-column li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--success);
            font-weight: bold;
        }

        .security-links {
            text-align: center;
            margin-top: 2rem;
        }

        .security-links a {
            color: var(--primary-blue);
            text-decoration: none;
            margin: 0 1rem;
            font-weight: 600;
        }
        /* Accessibility */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            border: 0;
        }

        /* Mobile */
        @media (max-width: 768px) {
            nav ul {
                display: none;
            }

            .content-block {
                padding: 3rem 0;
            }
        }
/* Trang installation.css */
  /* Reset and Base Styles with highest priority */
        .ipa-installation-hub {
            max-width: 1200px !important;
            margin: 0 auto !important;
            padding: 2rem 1.5rem !important;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif !important;
            background-color: #f8f9fa !important;
            box-sizing: border-box !important;
        }

        .ipa-installation-hub *,
        .ipa-installation-hub *::before,
        .ipa-installation-hub *::after {
            box-sizing: border-box !important;
        }

        /* Hub Header */
        .ipa-hub-header {
            text-align: center !important;
            margin-bottom: 2rem !important;
            width: 100% !important;
        }

        .ipa-hub-title {
            font-size: 2rem !important;
            font-weight: 700 !important;
            color: #1a1a1a !important;
            margin: 0 0 0.5rem 0 !important;
            padding: 0 !important;
        }

        .ipa-hub-subtitle {
            font-size: 1rem !important;
            color: #6c757d !important;
            font-weight: 400 !important;
            margin: 0 !important;
            padding: 0 !important;
        }