:root {
            --primary-color: #2ECC71;
            /* M-Pesa Green or High-Converting Green */
            --secondary-color: #34495E;
            /* Dark Blue/Grey for text */
            --background-color: #F8F9FA;
            --white-color: #ffffff;
            --dark-color: #2C3E50;
            --shadow-light: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 16px rgba(0, 0, 0, 0.15);
        }

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

        body {
            font-family: 'Inter', sans-serif;
            color: var(--secondary-color);
            line-height: 1.6;
            background-color: var(--background-color);
        }

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

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 700;
            text-decoration: none;
            transition: background-color 0.3s, transform 0.3s;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: var(--white-color);
            box-shadow: var(--shadow-light);
        }

        .btn-primary:hover {
            background-color: #27AE60;
            /* Darker Green */
            transform: translateY(-2px);
        }

        .btn-secondary {
            background-color: var(--white-color);
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
        }

        .btn-secondary:hover {
            background-color: #ECF0F1;
            /* Light Grey */
            transform: translateY(-2px);
        }

        .section-title {
            text-align: center;
            font-size: 2.5em;
            margin-bottom: 50px;
            color: var(--dark-color);
            font-weight: 900;
        }

        /* 1️⃣ Hero Section */
        #hero {
            background: linear-gradient(rgba(44, 62, 80, 0.8), rgba(44, 62, 80, 0.8)), url('placeholder-tech-developer-bg.jpg') center/cover;
            color: var(--white-color);
            padding: 100px 0;
            text-align: center;
            min-height: 60vh;
            display: flex;
            align-items: center;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-content h1 {
            font-size: 2.2em;
            margin-bottom: 20px;
            font-weight: 900;
            line-height: 1.1;
        }

        .hero-content p {
            font-size: 1.3em;
            margin-bottom: 40px;
            font-weight: 400;
            opacity: 0.9;
        }

        .hero-buttons .btn {
            margin: 10px 10px;
        }

        /* Trust Badges (Placeholder) */
        .trust-badges {
            margin-top: 50px;
            display: flex;
            justify-content: center;
            gap: 30px;
            opacity: 0.8;
        }

        .badge-item {
            font-size: 0.9em;
            font-weight: 600;
        }

        .badge-item i {
            color: var(--primary-color);
            margin-right: 5px;
        }

        /* 2️⃣ How It Works Section */
        #how-it-works {
            padding: 80px 0;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            text-align: center;
        }

        .step-card {
            background-color: var(--white-color);
            padding: 30px;
            border-radius: 12px;
            box-shadow: var(--shadow-light);
            transition: transform 0.3s;
        }

        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .step-icon {
            color: var(--primary-color);
            font-size: 3em;
            margin-bottom: 15px;
        }

        .step-card h3 {
            font-size: 1.4em;
            margin-bottom: 10px;
            color: var(--dark-color);
        }

        /* 3️⃣ Features Section */
        #features {
            padding: 80px 0;
            background-color: var(--white-color);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .feature-item {
            font-size: 1.1em;
            padding: 10px 0;
            display: flex;
            align-items: center;
        }

        .feature-item i {
            color: var(--primary-color);
            font-size: 1.2em;
            margin-right: 10px;
        }

        /* 4️⃣ Pricing Plans Section */
        #pricing {
            padding: 80px 0;
            background-color: var(--background-color);
        }

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

        .plan-card {
            background-color: var(--white-color);
            border-radius: 12px;
            padding: 40px;
            text-align: center;
            box-shadow: var(--shadow-light);
            transition: border 0.3s;
            border: 2px solid transparent;
        }

        .plan-card.highlight {
            border-color: var(--primary-color);
            transform: scale(1.05);
            box-shadow: 0 10px 20px rgba(46, 204, 113, 0.3);
        }

        .plan-card h3 {
            font-size: 1.8em;
            color: var(--dark-color);
            margin-bottom: 15px;
        }

        .price {
            font-size: 2.5em;
            font-weight: 900;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .price small {
            font-size: 0.5em;
            color: var(--secondary-color);
            font-weight: 600;
        }

        .plan-card ul {
            list-style: none;
            text-align: left;
            margin-bottom: 30px;
        }

        .plan-card ul li {
            padding: 8px 0;
            border-bottom: 1px dashed #eee;
        }

        /* 5️⃣ API Documentation Section */
        #api-docs {
            padding: 80px 0;
            background-color: var(--dark-color);
            color: var(--white-color);
        }

        #api-docs .section-title {
            color: var(--primary-color);
        }

        .api-content {
            display: flex;
            gap: 40px;
        }

        .api-details {
            flex: 1;
        }

        .code-snippet {
            flex: 1;
            background-color: #3b506b;
            /* Slightly lighter dark */
            border-radius: 8px;
            padding: 20px;
            overflow-x: auto;
        }

        .api-details h4 {
            font-size: 1.4em;
            margin-top: 20px;
            margin-bottom: 10px;
            color: var(--primary-color);
        }

        .api-details ul {
            list-style: disc;
            margin-left: 20px;
            opacity: 0.9;
        }

        .code-snippet pre {
            white-space: pre-wrap;
            word-wrap: break-word;
            font-family: 'Courier New', monospace;
            font-size: 0.9em;
            line-height: 1.4;
        }

        /* 6️⃣ Testimonials Section */
        #testimonials {
            padding: 80px 0;
        }

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

        .testimonial-card {
            background-color: var(--white-color);
            padding: 30px;
            border-radius: 12px;
            box-shadow: var(--shadow-light);
            border-left: 4px solid var(--primary-color);
        }

        .quote {
            font-style: italic;
            margin-bottom: 15px;
            font-size: 1.1em;
        }

        .author {
            font-weight: 700;
            color: var(--dark-color);
        }

        /* 7️⃣ FAQ Section */
        #faq {
            padding: 80px 0;
            background-color: var(--white-color);
        }

        .faq-item {
            margin-bottom: 15px;
            border-bottom: 1px solid #ddd;
            padding-bottom: 15px;
        }

        .faq-question {
            font-weight: 700;
            font-size: 1.1em;
            color: var(--dark-color);
            cursor: pointer;
        }

        .faq-answer {
            padding-top: 10px;
            display: none;
            /* Initially hidden */
            color: var(--secondary-color);
            font-size: 0.95em;
        }

        /* 8️⃣ CTA Footer */
        #cta-footer {
            background-color: var(--primary-color);
            padding: 60px 0;
            text-align: center;
            color: var(--white-color);
        }

        #cta-footer h2 {
            font-size: 2.5em;
            margin-bottom: 30px;
            font-weight: 900;
        }

        #cta-footer .btn-cta {
            background-color: var(--white-color);
            color: var(--primary-color);
            font-size: 1.2em;
            padding: 15px 40px;
            font-weight: 900;
        }

        #cta-footer .btn-cta:hover {
            background-color: #eee;
        }

        /* 9️⃣ Contact / Support Section */
        #contact {
            padding: 50px 0;
            background-color: #EAF2F8;
            text-align: center;
        }

        .contact-info {
            display: block;
            justify-content: center;
            gap: 40px;
            margin-top: 20px;
        }

        .contact-item {
            display: block;
            align-items: center;
            font-size: 1.1em;
        }

        .contact-item i {
            color: var(--dark-color);
            margin-right: 10px;
            font-size: 1.5em;
        }

        #demo-mockup {
            padding: 80px 0;
        }

        .demo-mockup-content {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .mockup-visual {
            flex: 1;
            padding: 20px;
            background-color: #ddd;
            min-height: 300px;
            border-radius: 12px;
            display: flex;
            justify-content: center;
            align-items: center;
            font-weight: 700;
        }

        .code-integration {
            padding: 40px;
            background-color: var(--dark-color);
            color: var(--white-color);
            border-radius: 8px;
            margin: 40px 0;
        }

        .code-integration h4 {
            color: var(--primary-color);
            margin-bottom: 15px;
            font-size: 1.5em;
        }

        .code-integration pre {
            background-color: #3b506b;
            padding: 15px;
            border-radius: 6px;
            overflow-x: auto;
            font-family: 'Courier New', monospace;
            font-size: 0.9em;
        }

        .copy-btn {
            float: right;
            background-color: var(--primary-color);
            color: var(--white-color);
            padding: 5px 10px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            margin-bottom: 5px;
        }

        .copy-btn:hover {
            background-color: #27AE60;
        }