:root {
            --primary-color: #0052cc;
            --primary-hover: #0041a3;
            --text-main: #25282b;
            --text-muted: #5e6c84;
            --bg-light: #f4f5f7;
            --bg-white: #ffffff;
            --border-color: #dfe1e6;
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            color: var(--text-main);
            line-height: 1.6;
            background-color: var(--bg-white);
            overflow-x: hidden;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        h1, h2, h3 {
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
        }

        h2 {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 1rem;
        }

        p {
            color: var(--text-muted);
            margin-bottom: 1rem;
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto 3rem auto;
        }

        section {
            padding: 80px 0;
        }

        /* Image Tag Styling */
        .img-container {
            width: 100%;
            text-align: center;
            margin: 20px 0;
        }

        .img-container img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        /* SECTION 1: Hero Banner */
        .hero-banner {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #ffffff;
            padding: 80px 0 60px 0;
            text-align: center;
        }

        .hero-banner h1 {
            color: #ffffff;
            font-size: 2.8rem;
            max-width: 900px;
            margin: 0 auto 1.5rem auto;
        }

        .hero-banner .subtitle {
            color: #94a3b8;
            font-size: 1.25rem;
            max-width: 700px;
            margin: 0 auto 2rem auto;
        }

        .selling-points-list {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
            list-style: none;
            margin-bottom: 30px;
        }

        .selling-points-list li {
            background: rgba(255, 255, 255, 0.1);
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.95rem;
            color: #e2e8f0;
        }

        /* SECTION 2: Overview */
        .overview {
            background-color: var(--bg-light);
        }

        .overview-content {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }

        .overview-content p {
            font-size: 1.15rem;
            margin-bottom: 1.5rem;
        }

        /* SECTION 3: Auto Brightness */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 30px;
            margin-bottom: 40px;
        }

        .comparison-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
        }

        .comparison-card.highlight {
            background: #eef2ff;
            border-color: #c7d2fe;
        }

        .comparison-card h3 {
            margin-bottom: 15px;
            font-size: 1.3rem;
        }

        .features-icons-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
            margin-top: 40px;
        }

        .icon-box {
            background: var(--bg-light);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .icon-box span {
            font-size: 2rem;
            display: block;
            margin-bottom: 10px;
        }

        .icon-box h4 {
            font-size: 1rem;
            color: var(--text-main);
        }

        /* Workflow Section */
        .workflow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .workflow-card {
            background: var(--bg-light);
            padding: 25px 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary-color);
        }

        .workflow-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--primary-color);
        }

        .workflow-note {
            background: #f8fafc;
            border-left: 4px solid #64748b;
            padding: 20px;
            margin-top: 30px;
            border-radius: 0 8px 8px 0;
            font-style: italic;
        }

        /* Applications Grid (Section 8) */
        .app-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            margin-top: 40px;
        }

        .app-item {
            background: var(--bg-light);
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: var(--transition);
        }

        .app-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .app-content {
            padding: 20px;
        }

        .app-item h3 {
            font-size: 1.1rem;
            color: var(--text-main);
            margin-bottom: 5px;
        }

        /* Specifications (Section 9) */
        .specs-table {
            max-width: 800px;
            margin: 0 auto;
            background: var(--bg-light);
            border-radius: 10px;
            border: 1px solid var(--border-color);
            overflow: hidden;
        }

        .spec-row {
            display: grid;
            grid-template-columns: 200px 1fr;
            border-bottom: 1px solid var(--border-color);
        }

        .spec-row:last-child {
            border-bottom: none;
        }

        .spec-label {
            padding: 15px 20px;
            font-weight: 600;
            background: #e9ecef;
            color: var(--text-main);
        }

        .spec-value {
            padding: 15px 20px;
            color: var(--text-muted);
        }

        /* OEM & ODM (Section 10) */
        .oem-content {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }

        .tags-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-top: 30px;
        }

        .tag {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.95rem;
            font-weight: 500;
        }

        /* FAQ (Section 11) */
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 15px;
        }

        .faq-item h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .faq-item p {
            margin-bottom: 0;
        }

        /* CTA Bottom Section */
        .bottom-cta {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #ffffff;
            text-align: center;
            padding: 80px 0;
        }

        .bottom-cta h2 {
            color: #ffffff;
        }

        .bottom-cta p {
            color: #94a3b8;
            max-width: 700px;
            margin: 0 auto 30px auto;
        }

        /* Responsive Media Queries */
        @media screen and (max-width: 992px) {
            .features-icons-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .workflow-grid, .app-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media screen and (max-width: 768px) {
            h2 {
                font-size: 1.8rem;
            }
            .hero-banner h1 {
                font-size: 2.1rem;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .workflow-grid, .app-grid {
                grid-template-columns: 1fr;
            }
            .spec-row {
                grid-template-columns: 1fr;
            }
            .spec-label {
                background: #e9ecef;
                padding-bottom: 5px;
            }
            .spec-value {
                padding-top: 5px;
            }
            section {
                padding: 50px 0;
            }
        }