/* --- DESIGN SYSTEM: SWISS MINIMAL --- */
        :root {
            /* Palette */
            --bg-body: #ffffff;
            --bg-secondary: #f9fafb;
            --bg-dark: #0f172a; /* Deep Navy for Contrast Sections */
            --text-primary: #111827;
            --text-secondary: #4b5563;
            --text-light: #94a3b8; /* For dark backgrounds */
            --accent-color: #000000;
            --accent-highlight: #d4af37; /* Metallic Gold */
            --border-light: #e2e8f0;
            
            /* Spacing & Layout */
            --container-width: 1100px;
            --spacing-unit: 100px;
            
            /* Typography */
            --font-display: 'Plus Jakarta Sans', sans-serif;
            --font-body: 'Inter', sans-serif;
        }

        /* --- RESET & BASE --- */
        * { margin: 0; padding: 0; box-sizing: border-box; }
        
        body {
            background-color: var(--bg-body);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        h1, h2, h3, h4, h5 {
            font-family: var(--font-display);
            color: var(--text-primary);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        h1 { font-size: clamp(3rem, 5vw, 4.5rem); }
        h2 { font-size: clamp(2rem, 3vw, 2.5rem); margin-bottom: 1.5rem; }
        h3 { font-size: 1.25rem; margin-bottom: 0.75rem; }
        
        p { color: var(--text-secondary); margin-bottom: 1.5rem; max-width: 700px; }
        
        a { text-decoration: none; color: inherit; transition: all 0.2s; }
        ul { list-style: none; }

        /* --- LAYOUT UTILITIES --- */
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section { padding: var(--spacing-unit) 0; border-bottom: 1px solid var(--border-light); }
        .section-alt { background-color: var(--bg-secondary); }
        
        /* Dark Section Styling */
        .section-dark { background-color: var(--bg-dark); color: #fff; }
        .section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }
        .section-dark p { color: var(--text-light); }
        
        .grid { display: grid; gap: 40px; }
        .grid-2 { grid-template-columns: 1fr 1fr; }
        .grid-3 { grid-template-columns: repeat(3, 1fr); }
        
        .flex-between { display: flex; align-items: center; justify-content: space-between; }

        /* --- COMPONENTS --- */
        .btn {
            display: inline-block;
            padding: 14px 28px;
            font-family: var(--font-display);
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: 4px;
            cursor: pointer;
            text-align: center;
            transition: all 0.2s ease;
        }
        
        .btn-primary { background-color: var(--accent-color); color: #fff; border: 1px solid var(--accent-color); }
        .btn-primary:hover { background-color: #333; border-color: #333; transform: translateY(-1px); }
        
        .btn-secondary { background-color: transparent; color: var(--text-primary); border: 1px solid var(--border-light); }
        .btn-secondary:hover { border-color: var(--text-primary); background: #fff; }

        .btn-outline-white { background-color: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.3); }
        .btn-outline-white:hover { border-color: #fff; background: rgba(255,255,255,0.05); }

        /* Badge Styling */
        .badge {
            display: inline-block; padding: 6px 12px; background: #f1f5f9; color: var(--text-primary);
            font-size: 0.75rem; font-weight: 600; text-transform: uppercase; border-radius: 100px;
            margin-bottom: 1.5rem; letter-spacing: 0.05em;
        }

        /* Nav */
        nav {
            padding: 20px 0; position: sticky; top: 0; background: rgba(255,255,255,0.95);
            backdrop-filter: blur(10px); z-index: 100; border-bottom: 1px solid var(--border-light);
        }
        .nav-logo { font-weight: 700; font-family: var(--font-display); font-size: 1.2rem; }
        .nav-links a { margin-left: 32px; font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); }
        .nav-links a:hover { color: var(--accent-color); }

        /* Cards & Logic */
        .feature-card {
            background: #fff; padding: 35px; border: 1px solid var(--border-light);
            transition: transform 0.3s ease; height: 100%;
        }
        .feature-card:hover { transform: translateY(-5px); border-color: var(--accent-highlight); }
        
        .logic-step { border-left: 2px solid var(--border-light); padding-left: 25px; position: relative; }
        .logic-step.active { border-color: var(--accent-highlight); }
        .logic-step::before {
            content: ''; position: absolute; left: -6px; top: 0; width: 10px; height: 10px;
            border-radius: 50%; background: #fff; border: 2px solid var(--border-light);
        }
        .logic-step.active::before { border-color: var(--accent-highlight); background: var(--accent-highlight); }

        /* Table & FAQ */
        .table-wrap { overflow-x: auto; border: 1px solid var(--border-light); border-radius: 8px; }
        table { width: 100%; border-collapse: collapse; min-width: 600px; }
        th, td { padding: 20px 24px; text-align: left; border-bottom: 1px solid var(--border-light); }
        th { font-size: 0.8rem; text-transform: uppercase; color: var(--text-secondary); font-weight: 600; background: #f8fafc; }
        
        .accordion-item { border-bottom: 1px solid var(--border-light); }
        .accordion-header {
            width: 100%; text-align: left; padding: 24px 0; background: none; border: none;
            font-family: var(--font-display); font-size: 1.1rem; font-weight: 600;
            cursor: pointer; display: flex; justify-content: space-between; color: var(--text-primary);
        }
        .accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; color: var(--text-secondary); }

        /* --- MODAL --- */
        .modal-overlay {
            display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
            background: rgba(0, 0, 0, 0.7); backdrop-filter: blur(5px); z-index: 1000;
            align-items: center; justify-content: center; opacity: 0; transition: opacity 0.3s ease;
        }
        .modal-container {
            background: #fff; width: 90%; max-width: 550px; border-radius: 12px;
            padding: 40px; position: relative; transform: translateY(20px); transition: transform 0.3s ease;
        }
        .modal-close { position: absolute; top: 20px; right: 20px; cursor: pointer; font-size: 1.2rem; color: #999; }
        .modal-step { display: none; animation: fadeIn 0.4s ease; }
        .modal-step.active { display: block; }
        
        .screenshot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 20px 0; }
        .mock-screenshot {
            background: #f1f5f9; height: 80px; border: 1px dashed #cbd5e1; border-radius: 4px;
            display: flex; flex-direction: column; align-items: center; justify-content: center;
            font-size: 0.7rem; color: var(--text-secondary); text-align: center;
        }

        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

        /* Responsive */
        @media (max-width: 768px) {
            .grid-2, .grid-3, .hero-stats { grid-template-columns: 1fr; gap: 30px; }
            h1 { font-size: 2.5rem; }
            .nav-links { display: none; }
            .section { padding: 60px 0; }
        }