/* Modern Reset and Root Profiles */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        }

        :root {
            --primary: #3498db;
            --primary-hover: #2980b9;
            --success: #2ecc71;
            --success-hover: #27ae60;
            --dark: #2c3e50;
            --light-bg: #f8fafc;
            --card-border: #e2e8f0;
            --text-main: #334155;
            --text-muted: #64748b;
        }

        body {
            background-color: var(--light-bg);
            color: var(--text-main);
            line-height: 1.6;
            scroll-behavior: smooth;
        }

        /* Container Limit Wrapper */
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* --- NAVIGATION SECTION --- */
        header {
            background: #ffffff;
            border-bottom: 1px solid var(--card-border);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: var(--dark);
            font-weight: 700;
            font-size: 24px;
        }

        .brand img {
            width: 48px;
            height: 48px;
            object-fit: contain;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.2s ease-in-out;
            cursor: pointer;
            border: none;
            width: 100%;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
        }

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

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

        .btn-outline:hover {
            background-color: var(--primary);
            color: #ffffff;
        }

        .btn-success {
            background-color: var(--success);
            color: #ffffff;
            box-shadow: 0 4px 12px rgba(46, 204, 113, 0.2);
        }

        .btn-success:hover {
            background-color: var(--success-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(46, 204, 113, 0.3);
        }

        /* --- HERO SPLIT MATRIX SECTION --- */
        .hero {
            background: #ffffff;
            padding: 60px 0 80px 0;
            border-bottom: 1px solid var(--card-border);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        @media (max-width: 768px) {
            .hero-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
        }

        .hero-text h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.2;
            margin-bottom: 18px;
        }

        .hero-text h1 span {
            color: var(--primary);
        }

        .hero-text p {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 30px;
        }

        .hero-text .btn {
            width: auto;
            font-size: 18px;
            padding: 16px 36px;
        }

        /* Simulated Application Mockup Interface Layout Frame */
        .hero-mockup {
            background: #1e293b;
            border-radius: 12px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.15);
            padding: 16px;
            border: 1px solid #334155;
        }

        .mockup-header {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 14px;
        }

        .mockup-dot {
            width: 11px;
            height: 11px;
            border-radius: 50%;
        }

        .mockup-body {
            background: #0f172a;
            border-radius: 6px;
            padding: 24px;
            color: #94a3b8;
            font-family: 'Courier New', Courier, monospace;
            font-size: 14px;
        }

        .mockup-line {
            margin-bottom: 8px;
        }

        .mockup-accent {
            color: var(--success);
        }

        /* --- UTILITY BEHAVIOR FEATURES GRID --- */
        .features {
            padding: 80px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-title h2 {
            font-size: 32px;
            color: var(--dark);
            font-weight: 700;
            margin-bottom: 12px;
        }

        .section-title p {
            color: var(--text-muted);
            font-size: 16px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: #ffffff;
            border: 1px solid var(--card-border);
            padding: 30px;
            border-radius: 10px;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .feature-icon {
            font-size: 32px;
            margin-bottom: 16px;
        }

        .feature-card h3 {
            font-size: 20px;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* --- THREE-TIERED PRICING MATRIX SECTION --- */
        .pricing-section {
            padding: 60px 0 100px 0;
            background-color: #ffffff;
            border-top: 1px solid var(--card-border);
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            align-items: stretch;
            margin-top: 40px;
        }

        .pricing-card {
            background: var(--light-bg);
            border: 1px solid var(--card-border);
            border-radius: 14px;
            padding: 40px 30px;
            display: flex;
            flex-direction: column;
            position: relative;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .pricing-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.05);
        }

        /* Visual Anchor Pop-Out Layer for Pro Tier */
        .pricing-card.popular {
            background: #ffffff;
            border: 2px solid var(--primary);
            box-shadow: 0 15px 35px rgba(52, 152, 219, 0.1);
            transform: scale(1.03);
        }
        
        .pricing-card.popular:hover {
            transform: scale(1.03) translateY(-4px);
            box-shadow: 0 20px 40px rgba(52, 152, 219, 0.15);
        }

        .badge {
            position: absolute;
            top: 16px;
            right: 20px;
            background: var(--primary);
            color: #ffffff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .tier-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }

        .pricing-card.popular .tier-name {
            color: var(--primary);
        }

        .tier-price {
            font-size: 48px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 6px;
            display: flex;
            align-items: baseline;
        }

        .tier-price span {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
            margin-left: 4px;
        }

        .tier-description {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
            min-height: 44px;
        }

        .feature-list {
            list-style: none;
            margin-bottom: 36px;
            flex-grow: 1;
        }

        .feature-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .feature-item::before {
            content: "✓";
            color: var(--success);
            font-weight: 700;
            font-size: 16px;
        }

        .feature-item.disabled {
            color: var(--text-muted);
            opacity: 0.6;
        }

        .feature-item.disabled::before {
            content: "✕";
            color: #ef4444;
        }

        .pricing-footer-note {
            text-align: center;
            margin-top: 40px;
            font-size: 14px;
            color: var(--text-muted);
        }

        footer {
            text-align: center;
            padding: 40px 0;
            border-top: 1px solid var(--card-border);
            background: var(--light-bg);
            font-size: 14px;
            color: var(--text-muted);
        }