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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        line-height: 1.6;
        color: #333;
        background-color: #f9f9f9;
    }

    /* Navigation */
    .bpxvn-navbar {
        background: #fff;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        position: sticky;
        top: 0;
        z-index: 100;
    }

    .bpxvn-navbar-content {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        height: 70px;
    }

    .bpxvn-logo {
        display: flex;
        align-items: center;
    }

    .bpxvn-logo img {
        height: 40px;
        width: auto;
    }

    .bpxvn-nav-links {
        display: flex;
        list-style: none;
        gap: 30px;
    }

    .bpxvn-nav-links a {
        text-decoration: none;
        color: #333;
        font-size: 16px;
        transition: color 0.3s;
        position: relative;
    }

    .bpxvn-nav-links a:hover {
        color: #0066cc;
    }

    .bpxvn-nav-links a.active {
        color: #0066cc;
        font-weight: 600;
    }

    .bpxvn-nav-links a.active::after {
        content: '';
        position: absolute;
        bottom: -8px;
        left: 0;
        right: 0;
        height: 3px;
        background: #0066cc;
        border-radius: 2px;
    }

    .bpxvn-nav-buttons {
        display: flex;
        gap: 15px;
    }

    .bpxvn-btn-primary {
        background: linear-gradient(135deg, #0066cc 0%, #0052a3 100%);
        color: #fff;
        border: none;
        padding: 10px 25px;
        border-radius: 6px;
        cursor: pointer;
        font-size: 14px;
        font-weight: 600;
        transition: all 0.3s;
    }

    .bpxvn-btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 16px rgba(0, 102, 204, 0.3);
    }

    .bpxvn-btn-secondary {
        background: transparent;
        color: #333;
        border: 2px solid #e0e0e0;
        padding: 8px 20px;
        border-radius: 6px;
        cursor: pointer;
        font-size: 14px;
        font-weight: 600;
        transition: all 0.3s;
    }

    .bpxvn-btn-secondary:hover {
        border-color: #0066cc;
        color: #0066cc;
    }

    /* Page Header */
    .bpxvn-page-header {
        background: linear-gradient(135deg, #f5f7fa 0%, #fff 100%);
        padding: 40px 20px;
        border-bottom: 1px solid #e0e0e0;
    }

    .bpxvn-page-header-content {
        max-width: 1200px;
        margin: 0 auto;
    }

    .bpxvn-breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 20px;
        font-size: 14px;
        color: #666;
    }

    .bpxvn-breadcrumb a {
        color: #0066cc;
        text-decoration: none;
        transition: color 0.3s;
    }

    .bpxvn-breadcrumb a:hover {
        color: #0052a3;
    }

    .bpxvn-page-header h1 {
        font-size: 42px;
        font-weight: 700;
        color: #000;
        margin-bottom: 15px;
        line-height: 1.2;
    }

    .bpxvn-page-header p {
        font-size: 18px;
        color: #666;
        max-width: 600px;
    }

    /* Main Content */
    .bpxvn-main {
        max-width: 1200px;
        margin: 0 auto;
        padding: 60px 20px;
    }

    /* Features Grid */
    .bpxvn-features-intro {
        margin-bottom: 80px;
        text-align: center;
    }

    .bpxvn-section-title {
        font-size: 36px;
        font-weight: 700;
        color: #000;
        margin-bottom: 20px;
    }

    .bpxvn-section-desc {
        font-size: 16px;
        color: #666;
        max-width: 600px;
        margin: 0 auto 40px;
    }

    .bpxvn-features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 30px;
        margin-bottom: 60px;
    }

    .bpxvn-feature-card {
        background: #fff;
        border-radius: 12px;
        padding: 40px 30px;
        transition: all 0.3s;
        border: 1px solid #f0f0f0;
        text-align: center;
    }

    .bpxvn-feature-card:hover {
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
        transform: translateY(-8px);
        border-color: #0066cc;
    }

    .bpxvn-feature-icon {
        font-size: 48px;
        margin-bottom: 20px;
        display: inline-block;
        background: linear-gradient(135deg, #e6f0ff 0%, #f0e6ff 100%);
        width: 80px;
        height: 80px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .bpxvn-feature-title {
        font-size: 20px;
        font-weight: 700;
        color: #000;
        margin-bottom: 12px;
    }

    .bpxvn-feature-desc {
        font-size: 14px;
        color: #666;
        line-height: 1.8;
    }

    /* Comparison Table */
    .bpxvn-comparison-section {
        margin-bottom: 80px;
    }

    .bpxvn-comparison-intro {
        text-align: center;
        margin-bottom: 40px;
    }

    .bpxvn-table-wrapper {
        overflow-x: auto;
        background: #fff;
        border-radius: 12px;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    }

    .bpxvn-comparison-table {
        width: 100%;
        border-collapse: collapse;
    }

    .bpxvn-comparison-table th {
        background: linear-gradient(135deg, #0066cc 0%, #0052a3 100%);
        color: #fff;
        padding: 20px;
        text-align: left;
        font-weight: 600;
        font-size: 16px;
    }

    .bpxvn-comparison-table td {
        padding: 20px;
        border-bottom: 1px solid #f0f0f0;
        font-size: 14px;
    }

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

    .bpxvn-comparison-table tr:nth-child(even) {
        background: #f9f9f9;
    }

    .bpxvn-comparison-table .bpxvn-check {
        color: #00cc00;
        font-weight: 700;
        font-size: 18px;
    }

    .bpxvn-comparison-table .bpxvn-cross {
        color: #cc0000;
        font-weight: 700;
        font-size: 18px;
    }

    /* Image Section */
    .bpxvn-image-section {
        margin-bottom: 80px;
    }

    .bpxvn-image-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
    }

    .bpxvn-image-item {
        background: #fff;
        border-radius: 12px;
        overflow: hidden;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
        transition: all 0.3s;
    }

    .bpxvn-image-item:hover {
        transform: translateY(-8px);
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
    }

    .bpxvn-image-item img {
        width: 100%;
        height: 250px;
        object-fit: cover;
        display: block;
    }

    .bpxvn-image-item-content {
        padding: 25px;
    }

    .bpxvn-image-item-title {
        font-size: 18px;
        font-weight: 700;
        color: #000;
        margin-bottom: 10px;
    }

    .bpxvn-image-item-desc {
        font-size: 14px;
        color: #666;
        line-height: 1.6;
    }

    /* Technology Section */
    .bpxvn-tech-section {
        background: #fff;
        border-radius: 12px;
        padding: 60px 40px;
        margin-bottom: 80px;
    }

    .bpxvn-tech-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 40px;
        margin-top: 40px;
    }

    .bpxvn-tech-item {
        padding: 30px;
        border-left: 4px solid #0066cc;
        background: #f9f9f9;
        border-radius: 8px;
        transition: all 0.3s;
    }

    .bpxvn-tech-item:hover {
        background: #fff;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    }

    .bpxvn-tech-item-title {
        font-size: 18px;
        font-weight: 700;
        color: #000;
        margin-bottom: 12px;
    }

    .bpxvn-tech-item-desc {
        font-size: 14px;
        color: #666;
        line-height: 1.8;
    }

    /* Stats Section */
    .bpxvn-stats-section {
        background: linear-gradient(135deg, #0066cc 0%, #0052a3 100%);
        border-radius: 12px;
        padding: 60px 40px;
        margin-bottom: 80px;
        color: #fff;
    }

    .bpxvn-stats-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 40px;
        margin-top: 30px;
    }

    .bpxvn-stat-item {
        text-align: center;
    }

    .bpxvn-stat-number {
        font-size: 48px;
        font-weight: 700;
        margin-bottom: 10px;
    }

    .bpxvn-stat-label {
        font-size: 14px;
        opacity: 0.9;
        line-height: 1.6;
    }

    /* Scenarios Section */
    .bpxvn-scenarios-section {
        margin-bottom: 80px;
    }

    .bpxvn-scenarios-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
        margin-top: 40px;
    }

    .bpxvn-scenario-card {
        background: #fff;
        border-radius: 12px;
        padding: 35px 30px;
        border: 2px solid #f0f0f0;
        transition: all 0.3s;
    }

    .bpxvn-scenario-card:hover {
        border-color: #0066cc;
        box-shadow: 0 12px 32px rgba(0, 102, 204, 0.15);
    }

    .bpxvn-scenario-icon {
        font-size: 40px;
        margin-bottom: 15px;
    }

    .bpxvn-scenario-title {
        font-size: 18px;
        font-weight: 700;
        color: #000;
        margin-bottom: 12px;
    }

    .bpxvn-scenario-desc {
        font-size: 14px;
        color: #666;
        line-height: 1.7;
    }

    /* CTA Section */
    .bpxvn-cta-section {
        background: linear-gradient(135deg, #f5f7fa 0%, #fff 100%);
        border-radius: 12px;
        padding: 60px 40px;
        text-align: center;
        margin-bottom: 80px;
        border: 2px solid #e0e0e0;
    }

    .bpxvn-cta-title {
        font-size: 32px;
        font-weight: 700;
        color: #000;
        margin-bottom: 15px;
    }

    .bpxvn-cta-desc {
        font-size: 16px;
        color: #666;
        margin-bottom: 30px;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .bpxvn-cta-buttons {
        display: flex;
        gap: 15px;
        justify-content: center;
        flex-wrap: wrap;
    }

    /* Footer */
    .bpxvn-footer {
        background: #2c3e50;
        color: #fff;
        padding: 60px 20px 40px;
        margin-top: 0;
    }

    .bpxvn-footer-content {
        max-width: 1200px;
        margin: 0 auto;
    }

    .bpxvn-footer-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 40px;
        margin-bottom: 40px;
    }

    .bpxvn-footer-section h4 {
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 20px;
    }

    .bpxvn-footer-section ul {
        list-style: none;
    }

    .bpxvn-footer-section ul li {
        margin-bottom: 12px;
    }

    .bpxvn-footer-section ul li a {
        color: #bbb;
        text-decoration: none;
        transition: color 0.3s;
    }

    .bpxvn-footer-section ul li a:hover {
        color: #fff;
    }

    .bpxvn-footer-bottom {
        border-top: 1px solid #444;
        padding-top: 30px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 20px;
    }

    .bpxvn-footer-brand {
        font-size: 16px;
        font-weight: 600;
    }

    .bpxvn-footer-links {
        display: flex;
        gap: 20px;
        flex-wrap: wrap;
    }

    .bpxvn-footer-links a {
        color: #bbb;
        text-decoration: none;
        font-size: 14px;
        transition: color 0.3s;
    }

    .bpxvn-footer-links a:hover {
        color: #fff;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
        .bpxvn-navbar-content {
            padding: 0 15px;
        }

        .bpxvn-nav-links {
            gap: 15px;
            font-size: 14px;
        }

        .bpxvn-page-header h1 {
            font-size: 28px;
        }

        .bpxvn-page-header p {
            font-size: 16px;
        }

        .bpxvn-section-title {
            font-size: 28px;
        }

        .bpxvn-features-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .bpxvn-feature-card {
            padding: 30px 20px;
        }

        .bpxvn-tech-section {
            padding: 40px 20px;
        }

        .bpxvn-tech-grid {
            gap: 20px;
        }

        .bpxvn-tech-item {
            padding: 20px;
        }

        .bpxvn-stats-section {
            padding: 40px 20px;
        }

        .bpxvn-stats-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .bpxvn-stat-number {
            font-size: 32px;
        }

        .bpxvn-scenarios-grid {
            grid-template-columns: 1fr;
            gap: 15px;
        }

        .bpxvn-cta-section {
            padding: 40px 20px;
        }

        .bpxvn-cta-title {
            font-size: 24px;
        }

        .bpxvn-cta-buttons {
            flex-direction: column;
        }

        .bpxvn-cta-buttons button {
            width: 100%;
        }

        .bpxvn-footer-bottom {
            flex-direction: column;
            text-align: center;
        }

        .bpxvn-footer-links {
            justify-content: center;
        }

        .bpxvn-main {
            padding: 40px 15px;
        }
    }

    @media (max-width: 480px) {
        .bpxvn-navbar-content {
            height: 60px;
            gap: 10px;
        }

        .bpxvn-logo img {
            height: 32px;
        }

        .bpxvn-nav-links {
            display: none;
        }

        .bpxvn-page-header {
            padding: 30px 15px;
        }

        .bpxvn-page-header h1 {
            font-size: 24px;
        }

        .bpxvn-main {
            padding: 30px 15px;
        }

        .bpxvn-section-title {
            font-size: 22px;
        }

        .bpxvn-comparison-table th,
        .bpxvn-comparison-table td {
            padding: 12px;
            font-size: 12px;
        }

        .bpxvn-image-item img {
            height: 200px;
        }

        .bpxvn-stats-grid {
            grid-template-columns: 1fr;
        }

        .bpxvn-stat-number {
            font-size: 28px;
        }
    }

    /* Smooth Transitions */
    a, button {
        transition: all 0.3s ease;
    }

    /* Utility Classes */
    .bpxvn-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .bpxvn-mt-large {
        margin-top: 60px;
    }

    .bpxvn-mb-large {
        margin-bottom: 60px;
    }