/* --- CSS VARIABLES (MATCHING BRAND IDENTITY) --- */
        :root {
            --primary: #0033A1;
            /* Deep Corporate Blue */
            --secondary: #0076FF;
            /* Tech Bright Blue */
            --accent: #1A1A1A;
            /* Strong Dark */
            --bg-light: #FFFFFF;
            --bg-off: #F5F7FA;
            /* Light Grey for sections */
            --text-main: #1A1A1A;
            --text-sub: #555555;
            --border: #E0E0E0;
            --success: #10B981;
        }

        html.dark-mode {
            --primary: #3B82F6;
            --secondary: #60A5FA;
            --accent: #FFFFFF;
            --bg-light: #0F1419;
            --bg-off: #161B22;
            --text-main: #F3F4F6;
            --text-sub: #9CA3AF;
            --border: #2F3336;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--bg-light);
            color: var(--text-main);
            line-height: 1.6;
            transition: background-color 0.3s ease, color 0.3s ease;
        }

        h1,
        h2,
        h3,
        h4 {
            font-family: 'Space Grotesk', sans-serif;
            color: var(--text-main);
            line-height: 1.2;
        }

        /* --- NAVIGATION --- */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 5%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            height: 70px;
        }

        html.dark-mode nav {
            background: rgba(15, 20, 25, 0.9);
        }

        .logo {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            cursor: pointer;
            letter-spacing: -0.5px;
        }

        .logo span {
            color: var(--secondary);
        }

        .nav-links {
            display: flex;
            gap: 2.5rem;
            list-style: none;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.2s;
        }

        .nav-links a:hover {
            color: var(--secondary);
        }

        .nav-actions {
            display: flex;
            gap: 1rem;
            align-items: center;
        }

        .theme-toggle {
            background: none;
            border: 1px solid var(--border);
            color: var(--text-main);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            cursor: pointer;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .cta-btn {
            background: var(--primary);
            color: white;
            padding: 0.6rem 1.5rem;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }

        .cta-btn:hover {
            background: var(--secondary);
            transform: translateY(-1px);
        }

        /* --- HERO SECTION --- */
        .hero {
            margin-top: 70px;
            padding: 5rem 5%;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: radial-gradient(circle at top right, rgba(0, 118, 255, 0.1), transparent 40%);
        }

        .hero-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .hero-text h1 {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            letter-spacing: -1px;
        }

        .hero-text h1 span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--text-sub);
            margin-bottom: 2rem;
            max-width: 90%;
        }

        .location-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(0, 118, 255, 0.1);
            color: var(--primary);
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
        }

        .hero-actions {
            display: flex;
            gap: 1rem;
        }

        .btn-outline {
            border: 2px solid var(--border);
            color: var(--text-main);
            padding: 0.8rem 2rem;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .hero-img {
            width: 100%;
            max-width: 550px;
            height: auto;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0, 118, 255, 0.15);
            transition: transform 0.3s ease;
            object-fit: cover;
        }

        .hero-img:hover {
            transform: translateY(-5px);
        }

        /* --- SECTIONS COMMON --- */
        section {
            padding: 5rem 5%;
        }

        .section-header {
            text-align: center;
            margin-bottom: 4rem;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-header h2 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        .section-header p {
            color: var(--text-sub);
            font-size: 1.1rem;
        }

        /* --- WHY US (GRID) --- */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        .feature-card {
            background: var(--bg-off);
            padding: 2rem;
            border-radius: 12px;
            border: 1px solid var(--border);
            transition: transform 0.3s;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            border-color: var(--secondary);
        }

        .feature-icon {
            font-size: 2rem;
            margin-bottom: 1rem;
            display: block;
        }

        .feature-card h3 {
            font-size: 1.25rem;
            margin-bottom: 0.5rem;
        }

        .feature-card p {
            color: var(--text-sub);
            font-size: 0.95rem;
        }

        /* --- COURSES (PRICING STYLE) --- */
        .courses-section {
            background: var(--bg-off);
        }

        .courses-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            max-width: 1300px;
            margin: 0 auto;
        }

        .course-card {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 2rem;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
            transition: all 0.3s;
        }

        .course-card:hover {
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
            transform: translateY(-5px);
        }

        .course-card.highlight {
            border: 2px solid var(--secondary);
            background: linear-gradient(to bottom, var(--bg-light), rgba(0, 118, 255, 0.03));
        }

        .badge {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: var(--primary);
            color: white;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            text-transform: uppercase;
        }

        .course-title {
            font-size: 1.4rem;
            margin-bottom: 0.5rem;
            font-weight: 700;
        }

        .course-price {
            font-size: 2rem;
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 1rem;
            font-family: 'Space Grotesk';
        }

        .course-desc {
            color: var(--text-sub);
            margin-bottom: 1.5rem;
            font-size: 0.9rem;
            min-height: 45px;
        }

        .course-features {
            list-style: none;
            margin-bottom: 2rem;
            flex-grow: 1;
        }

        .course-features li {
            padding-left: 1.5rem;
            position: relative;
            margin-bottom: 0.8rem;
            color: var(--text-sub);
            font-size: 0.9rem;
        }

        .course-features li::before {
            content: "✓";
            color: var(--success);
            position: absolute;
            left: 0;
            font-weight: bold;
        }

        .course-btn {
            width: 100%;
            padding: 0.8rem;
            border-radius: 8px;
            border: none;
            background: var(--primary);
            color: white;
            font-weight: 600;
            cursor: pointer;
            transition: 0.3s;
            margin-top: auto;
        }

        .course-btn:hover {
            background: var(--secondary);
        }

        .course-btn.outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }

        .course-btn.outline:hover {
            background: var(--primary);
            color: white;
        }

        /* --- SERVICES (LIST STYLE) --- */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 1.5rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        .service-item {
            display: flex;
            gap: 1rem;
            padding: 1.5rem;
            background: var(--bg-off);
            border-radius: 12px;
            border: 1px solid var(--border);
            align-items: flex-start;
        }

        .service-icon {
            background: var(--bg-light);
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            font-size: 1.5rem;
            flex-shrink: 0;
            border: 1px solid var(--border);
        }

        /* --- TARGET AUDIENCE (PILLS) --- */
        .audience-section {
            background: var(--accent);
            color: white;
            text-align: center;
        }

        .audience-section h2 {
            color: white;
        }

        .audience-section p {
            color: rgba(255, 255, 255, 0.7);
        }

        .audience-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
            max-width: 900px;
            margin: 2rem auto 0;
        }

        .tag {
            background: rgba(255, 255, 255, 0.1);
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        /* --- FOOTER --- */
        footer {
            background: var(--bg-off);
            padding: 4rem 5% 2rem;
            border-top: 1px solid var(--border);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-col h3 {
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            color: var(--primary);
        }

        .footer-col p {
            color: var(--text-sub);
            margin-bottom: 1rem;
            font-size: 0.95rem;
        }

        .footer-links li {
            list-style: none;
            margin-bottom: 0.5rem;
        }

        .footer-links a {
            text-decoration: none;
            color: var(--text-sub);
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .seo-keywords {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border);
            font-size: 0.8rem;
            color: var(--text-sub);
            text-align: center;
            opacity: 0.7;
        }

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

            .hero-content {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .hero-text h1 {
                font-size: 2.5rem;
            }

            .location-tag {
                margin: 0 auto 1.5rem;
            }

            .hero-actions {
                justify-content: center;
            }

            .hero-img {
                width: 90%;
                margin-top: 2rem;
            }
        }