
        /* CSS Variables - Sophisticated Warm Light Theme */
        :root {
            --bg-base: #f4f3ef;
            --bg-card: #ffffff; 
            --bg-card-hover: #faf9f6;
            
            --text-main: #2c2c2a;
            --text-muted: #6b6b66;
            
            --accent: #e35d30;
            --accent-hover: #c44d25;
            
            --border: rgba(44, 44, 42, 0.1);
            
            --font-sans: 'Inter', sans-serif;
            --font-mono: ui-monospace, SFMono-Regular, Menlo, monospace;
            --transition: all 0.3s ease;
        }

        /* Reset & Rock-Solid Structural Constraints */
        * { box-sizing: border-box; margin: 0; padding: 0; }
        
        html, body {
            font-family: var(--font-sans);
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            width: 100%;
        }

        a { text-decoration: none; color: inherit; transition: var(--transition); }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }

        /* Typography Base */
        h1, h2, h3, h4 { font-weight: 600; line-height: 1.15; letter-spacing: -0.02em; }
        .label {
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-muted);
            font-weight: 600;
            margin-bottom: 0.5rem;
            display: block;
        }

        /* Split Screen Layout - WOBBLE FIXED */
        .layout-wrapper { 
            display: flex; 
            flex-direction: column; 
            min-height: 100vh;
            width: 100%; 
        }

        @media (min-width: 1024px) {
            .layout-wrapper { flex-direction: row; }
            
            /* The Fixed Left Pane */
            .pane-left {
                width: 40vw;
                height: 100dvh; /* Modern dynamic viewport height fixes browser UI jumps */
                position: sticky;
                top: 0;
                left: 0;
                display: flex;
                flex-direction: column;
                padding: clamp(2rem, 4dvh, 4rem) clamp(2rem, 4vw, 4rem);
                border-right: 1px solid var(--border);
                overflow: hidden; /* NO scrolling internally, ensures rock solid stability */
            }

            .pane-right {
                width: 60vw;
                min-height: 100vh;
                background-color: var(--bg-base);
            }
        }

        @media (max-width: 1023px) {
            .pane-left { padding: 3rem 1.5rem; border-bottom: 1px solid var(--border); }
            .pane-right { padding-bottom: 6rem; }
        }

        /* --- Left Pane Content --- */
        .brand-header {
            display: flex; align-items: center; gap: 0.5rem;
            font-size: 1.125rem; font-weight: 700; color: var(--text-main);
            margin-bottom: auto; /* Pushes content down slightly */
            flex-shrink: 0;
        }
        .brand-header img { height: 24px; filter: grayscale(100%) contrast(200%); opacity: 0.8;}

        .left-content-wrapper {
            display: flex;
            flex-direction: column;
            justify-content: center;
            margin-top: clamp(1rem, 2dvh, 2rem);
            margin-bottom: clamp(1rem, 2dvh, 2rem);
            flex-shrink: 0;
        }

        /* Professional Intro */
        .personal-intro {
            margin-bottom: clamp(0.75rem, 1.5dvh, 1.25rem);
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
        }
        .personal-intro .label {
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .cert-badge {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .cert-badge svg {
            width: 16px; height: 16px;
            color: var(--accent);
        }

        .main-pitch h1 { 
            font-size: clamp(1.6rem, 3.2vw, 2.75rem); 
            margin-bottom: clamp(0.5rem, 1.5dvh, 1rem); 
            line-height: 1.1;
        }
        .main-pitch p { 
            font-size: clamp(0.9rem, 1.4dvh, 1.125rem); 
            color: var(--text-muted); 
            margin-bottom: clamp(1rem, 3dvh, 2rem); 
            max-width: 480px; 
            line-height: 1.5;
        }

        .services-list { margin-bottom: clamp(1rem, 3dvh, 2.5rem); }
        .service-item { margin-bottom: clamp(0.5rem, 1.5dvh, 1.25rem); }
        .service-item h3 { 
            font-size: clamp(0.9rem, 1.4dvh, 1rem); 
            margin-bottom: 0.15rem; 
            display: flex; align-items: center; gap: 0.5rem; 
        }
        .service-item p { 
            font-size: clamp(0.85rem, 1.2dvh, 0.95rem); 
            color: var(--text-muted); margin: 0; 
            line-height: 1.3;
        }

        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
            padding: clamp(0.75rem, 1.5dvh, 1rem) 2rem; 
            border-radius: 4px; font-weight: 600; font-size: 1rem;
            background-color: var(--accent); color: white;
            transition: var(--transition); cursor: pointer; border: none;
            width: max-content;
        }
        .btn:hover { background-color: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 4px 10px rgba(227, 93, 48, 0.2);}
        
        .btn-outline {
            background-color: transparent;
            color: var(--text-main);
            border: 1px solid var(--border);
            box-shadow: none;
        }
        .btn-outline:hover {
            background-color: transparent;
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(0);
            box-shadow: none;
        }

        .contact-info { margin-top: clamp(1rem, 2.5dvh, 2rem); }
        .contact-link { font-size: clamp(0.95rem, 1.4dvh, 1.125rem); font-weight: 500; border-bottom: 1px solid var(--border); padding-bottom: 0.25rem;}
        .contact-link:hover { color: var(--accent); border-color: var(--accent); }

        /* Elegant Progress Indicator */
        .scroll-progress-container {
            margin-top: auto; /* Pushes rigidly to bottom */
            width: 120px;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            flex-shrink: 0;
        }
        .progress-text {
            font-size: 0.875rem; 
            font-weight: 600; 
            color: var(--accent); 
            font-variant-numeric: tabular-nums;
        }
        .progress-track {
            height: 2px; 
            background-color: var(--border);
            width: 100%; 
            position: relative; 
            overflow: hidden;
        }
        .progress-fill {
            position: absolute; 
            top: 0; left: 0; 
            height: 100%; width: 0%;
            background-color: var(--accent); 
            will-change: width; /* Suorituskykyoptimointi */
        }

        @media (max-width: 1023px) {
            .scroll-progress-container {
                position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
                margin-top: 0; padding-top: 0; background: transparent;
            }
            .progress-text { display: none; }
            .progress-track { height: 4px; }
        }

        /* --- Right Pane Content --- */
        .right-section {
            padding: 4rem;
            border-bottom: 1px solid var(--border);
        }
        @media (max-width: 1023px) { .right-section { padding: 3rem 1.5rem; } }

        /* Portfolio Grid */
        .section-intro { margin-bottom: 3rem; }
        .section-intro h2 { font-size: 2rem; margin-bottom: 0.75rem; }
        .section-intro p { font-size: 1.125rem; color: var(--text-muted); max-width: 600px; }

        .portfolio-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 2.5rem;
        }

        .project-card {
            display: flex; flex-direction: column;
            background-color: var(--bg-card);
            border-radius: 12px;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
        }
        .project-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.06);
            border-color: rgba(44, 44, 42, 0.2);
        }

        .project-visual {
            aspect-ratio: 16/10;
            display: flex; align-items: center; justify-content: center;
            position: relative;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }
        
        .browser-bar {
            position: absolute; top: 0; left: 0; width: 100%;
            padding: 0.5rem 0.75rem;
            display: flex; gap: 4px;
            background: rgba(255, 255, 255, 0.4);
            border-bottom: 1px solid rgba(0,0,0,0.03);
            z-index: 2;
        }
        .bb-dot { width: 8px; height: 8px; border-radius: 50%; }
        .bb-red { background-color: #ff5f56; }
        .bb-yellow { background-color: #ffbd2e; }
        .bb-green { background-color: #27c93f; }

        .project-visual img {
            max-width: 60%; max-height: 70px; object-fit: contain;
            mix-blend-mode: multiply; 
            transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.5s;
            position: relative;
            z-index: 1;
        }
        
        .project-card:hover .project-visual img {
            transform: scale(1.08) translateY(-4px);
            filter: drop-shadow(0 10px 15px rgba(0,0,0,0.15));
        }
        
        .bg-1 { background: linear-gradient(135deg, #fdfbf7 0%, #edeae3 100%); }
        .bg-2 { background: linear-gradient(135deg, #f0f7fb 0%, #dce4eb 100%); }
        .bg-3 { background: linear-gradient(135deg, #fdfaf6 0%, #e6e0d5 100%); }
        .bg-4 { background: linear-gradient(135deg, #f4f5f6 0%, #e0e2e4 100%); }

        .project-details { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
        .project-details .label { margin-bottom: 0.25rem; color: var(--accent); }
        .project-details h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
        .project-details p { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 1.5rem; flex: 1;}
        
        .project-link {
            font-weight: 600; font-size: 0.875rem; color: var(--text-main); display: inline-flex; align-items: center; gap: 0.25rem; margin-top: auto;
        }
        .project-link svg { width: 16px; height: 16px; transition: transform 0.2s; }
        .project-link:hover { color: var(--accent); }
        .project-link:hover svg { transform: translateX(4px); }

        /* Modal Overlay for Demos */
        .modal-overlay {
            position: fixed; top: 0; left: 0; width: 100%; height: 100%;
            background: rgba(0, 0, 0, 0.6); backdrop-filter: blur(4px);
            z-index: 1000; display: flex; justify-content: center; align-items: center;
            opacity: 0; visibility: hidden; transition: all 0.3s ease;
        }
        .modal-overlay.active {
            opacity: 1; visibility: visible;
        }
        .modal-content {
            background: var(--bg-base);
            width: 90%; max-width: 1000px; max-height: 85vh;
            border-radius: 12px; overflow-y: auto;
            padding: 3rem; position: relative;
            transform: translateY(20px); transition: transform 0.3s ease;
            box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
        }
        @media (max-width: 768px) {
            .modal-content { padding: 2rem 1.5rem; width: 95%; }
        }
        .modal-overlay.active .modal-content { transform: translateY(0); }
        
        .modal-close {
            position: absolute; top: 1.5rem; right: 1.5rem;
            background: var(--bg-card); border: 1px solid var(--border);
            cursor: pointer; color: var(--text-main); 
            width: 40px; height: 40px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            transition: var(--transition); z-index: 10;
        }
        .modal-close:hover { background: var(--text-main); color: var(--bg-base); }

        .demo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }
        .demo-card {
            background-color: var(--bg-card); border: 1px solid var(--border);
            border-radius: 8px; padding: 1.5rem; transition: var(--transition);
            display: flex; flex-direction: column; text-decoration: none; color: inherit;
        }
        .demo-card:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: 0 6px 12px rgba(0,0,0,0.04); }
        .demo-card h4 { font-size: 1.1rem; margin-bottom: 0.25rem; color: var(--text-main); }
        .demo-card span { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 1rem; display: block;}
        .demo-link-text {
            margin-top: auto; font-size: 0.85rem; font-weight: 600; color: var(--accent);
            display: inline-flex; align-items: center; gap: 0.25rem;
        }
        .demo-link-text svg { width: 14px; height: 14px; transition: transform 0.2s; }
        .demo-card:hover .demo-link-text svg { transform: translateX(2px) translateY(-2px); }

        /* Feature Section */
        .feature-block { background-color: var(--text-main); color: var(--bg-base); padding: 4rem; border-radius: 8px; }
        @media (max-width: 1023px) { .feature-block { padding: 2.5rem 1.5rem; border-radius: 0; } }
        
        .feature-block h2 { color: var(--bg-base); font-size: 2rem; margin-bottom: 1rem; }
        .feature-block p { color: #a1a1aa; font-size: 1.125rem; margin-bottom: 2.5rem; }
        
        .easy-update-visual {
            background-color: #18181b; border: 1px solid #3f3f46; border-radius: 6px;
            padding: 1.5rem; display: flex; flex-direction: column; gap: 1.5rem;
        }
        .eu-row { display: flex; align-items: center; gap: 1rem; }
        
        .eu-box { 
            flex: 1; background: #27272a; padding: 1rem; border-radius: 4px; 
            border: 1px solid #3f3f46; 
            height: 90px; 
            transition: all 0.3s ease;
            overflow: hidden;
            display: flex; flex-direction: column; justify-content: center;
        }
        .eu-title { font-size: 0.75rem; color: #a1a1aa; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.25rem; }
        .eu-text { color: #fff; font-size: 0.95rem; font-family: var(--font-mono); white-space: nowrap; overflow: hidden; }
        .eu-arrow { color: var(--accent); flex-shrink: 0; }

        .cursor { display: inline-block; width: 2px; height: 1em; background-color: var(--accent); margin-left: 2px; vertical-align: middle; animation: blink 1s step-end infinite; }
        @keyframes blink { 50% { opacity: 0; } }

        .eu-box-target { border-color: #3f3f46; }
        .eu-box-target.flash {
            border-color: var(--accent);
            background: rgba(227, 93, 48, 0.1);
        }

        /* Pricing Section */
        .pricing-section { padding-top: 4rem; padding-bottom: 4rem; }
        
        .slider-container { margin: 2.5rem 0; padding-bottom: 2.5rem; border-bottom: 1px solid var(--border); }
        .slider-labels { display: flex; justify-content: space-between; font-size: 0.875rem; color: var(--text-muted); margin-bottom: 1.5rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em;}
        
        /* Custom Range Slider */
        input[type=range] { -webkit-appearance: none; width: 100%; background: transparent; }
        input[type=range]:focus { outline: none; }
        input[type=range]::-webkit-slider-runnable-track { width: 100%; height: 6px; cursor: pointer; background: var(--border); border-radius: 3px; }
        input[type=range]::-webkit-slider-thumb { 
            height: 24px; width: 24px; border-radius: 50%; background: var(--accent); cursor: pointer; -webkit-appearance: none; margin-top: -9px; 
            box-shadow: 0 4px 6px rgba(0,0,0,0.1); transition: transform 0.1s;
        }
        input[type=range]::-webkit-slider-thumb:hover { transform: scale(1.15); }
        
        .price-card {
            background: var(--bg-card); border-radius: 12px; padding: 3rem; margin-top: 2rem; transition: var(--transition);
            border: 1px solid var(--border); box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }
        .price-val { font-size: 3.5rem; font-weight: 700; line-height: 1; margin-bottom: 0.5rem; display: flex; align-items: flex-start; gap: 0.25rem; color: var(--text-main);}
        .price-val span { font-size: 1.5rem; color: var(--text-muted); margin-top: 0.5rem;}
        
        .feat-list { margin-top: 2rem; border-top: 1px solid var(--border); padding-top: 2rem; display: flex; flex-direction: column; gap: 1rem;}
        .feat-item { display: flex; align-items: flex-start; gap: 1rem; color: var(--text-main); font-size: 0.95rem; transition: var(--transition);}
        .feat-item svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px;}
        
        .feat-disabled { color: var(--text-muted); }
        .feat-disabled svg { color: var(--text-muted); opacity: 0.5; }
        .feat-disabled span { text-decoration: line-through; }
        .feat-enabled { color: var(--text-main); }
        .feat-enabled svg { color: var(--accent); }

        .price-disclaimer {
            background: rgba(227, 93, 48, 0.08);
            border: 1px solid rgba(227, 93, 48, 0.2);
            border-radius: 6px;
            padding: 1rem 1.25rem;
            display: flex; align-items: flex-start; gap: 0.75rem;
            margin-bottom: 2.5rem;
        }
        .price-disclaimer svg { color: var(--accent); width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px;}
        .price-disclaimer p { margin: 0; font-size: 0.875rem; color: var(--text-main); line-height: 1.5;}

        /* Process Section */
        .process-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            margin-top: 2rem;
        }
        @media (min-width: 768px) {
            .process-grid { grid-template-columns: 1fr 1fr; }
        }
        .process-step {
            padding: 2rem;
            background-color: var(--bg-card);
            border-radius: 8px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .process-step:hover {
            box-shadow: 0 4px 10px rgba(0,0,0,0.03);
            border-color: rgba(44, 44, 42, 0.15);
        }
        .step-num {
            font-size: 0.875rem; font-weight: 700; color: var(--accent); margin-bottom: 0.75rem; display: block; letter-spacing: 0.05em;
        }
        .process-step h3 { font-size: 1.125rem; margin-bottom: 0.5rem; }
        .process-step p { font-size: 0.95rem; color: var(--text-muted); margin: 0; }

        /* Footer */
        .site-footer { text-align: center; padding: 4rem; color: var(--text-muted); font-size: 0.875rem; }

        /* Mobile Sticky CTA */
        .mobile-cta-wrapper {
            display: none;
        }
        @media (max-width: 1023px) {
            .mobile-cta-wrapper {
                display: block;
                position: fixed;
                bottom: 0;
                left: 0;
                width: 100%;
                background: var(--bg-card);
                border-top: 1px solid var(--border);
                padding: 1rem 1.5rem;
                z-index: 99;
                box-shadow: 0 -4px 15px rgba(0,0,0,0.03);
            }
            .mobile-cta-wrapper .btn {
                width: 100%;
                padding: 1rem;
            }
        }

        /* Animations */
        .fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .fade-in.visible { opacity: 1; transform: translateY(0); }
