:root {
            --color-background-dark: #121212; /* Угольный */
            --color-background-medium: #1e1e1e; /* Мокрый асфальт */
            --color-accent-blue: #00bfff; /* Неоново-синий */
            --color-text-primary: #ffffff;
            --color-text-secondary: #a9a9a9;
            --color-border: #333333;

            --font-header: 'Rockwell', 'Georgia', serif;
            --font-body: 'Arial', 'Helvetica Neue', sans-serif;
        }

        /* --- Base & Reset --- */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--color-background-dark);
            color: var(--color-text-primary);
            font-family: var(--font-body);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        
        /* --- Typography --- */
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-header);
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-text-primary);
            margin-bottom: 0.75em;
        }

        h1 {
            font-size: clamp(2.5rem, 6vw, 4rem);
            letter-spacing: -1px;
        }
        
        h2 {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--color-border);
            margin-bottom: 1.5rem;
        }

        h3 {
            font-size: clamp(1.4rem, 3vw, 1.8rem);
        }

        p {
            margin-bottom: 1.5em;
            color: var(--color-text-secondary);
        }

        a {
            color: var(--color-accent-blue);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover, a:focus {
            color: var(--color-text-primary);
        }

        /* --- Layout & Containers --- */
        .flux-container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .data-stream-section {
            padding: 80px 0;
            border-bottom: 1px solid var(--color-border);
            overflow: hidden;
        }
        
        .data-stream-section:last-of-type {
            border-bottom: none;
        }

        /* --- Animations --- */
        .fade-in-element {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease-out, transform 0.8s ease-out;
        }

        .fade-in-element.is-visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* --- Header --- */
        .apex-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 15px 0;
            background-color: rgba(18, 18, 18, 0.85);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            justify-content: center;
            align-items: center;
        }
        
        .header-grid {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .apex-logo {
            font-family: var(--font-header);
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--color-text-primary);
        }

        .apex-logo .accent-dot {
            color: var(--color-accent-blue);
        }
        
        .apex-nav ul {
            list-style: none;
            display: flex;
            gap: 30px;
        }
        
        .apex-nav a {
            font-family: var(--font-body);
            font-weight: 600;
            font-size: 1rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            position: relative;
            padding-bottom: 5px;
        }
        
        .apex-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--color-accent-blue);
            transform: scaleX(0);
            transform-origin: right;
            transition: transform 0.4s cubic-bezier(0.19, 1, 0.22, 1);
        }

        .apex-nav a:hover::after {
            transform: scaleX(1);
            transform-origin: left;
        }

        /* --- Hero Section --- */
        .hero-matrix {
            padding: 200px 0 120px;
            text-align: center;
            min-height: 80vh;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
        }
        
        .hero-matrix h1 {
            color: transparent;
            background: linear-gradient(90deg, var(--color-text-primary) 70%, var(--color-accent-blue) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-sub-text {
            font-size: 1.25rem;
            max-width: 750px;
            margin: 30px auto 40px;
            color: var(--color-text-secondary);
        }
        
        .cta-prime {
            display: inline-block;
            font-family: var(--font-body);
            font-size: 1.1rem;
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--color-background-dark);
            background-color: var(--color-accent-blue);
            padding: 18px 40px;
            border: 2px solid var(--color-accent-blue);
            transition: background-color 0.3s ease, color 0.3s ease;
        }

        .cta-prime:hover {
            background-color: transparent;
            color: var(--color-accent-blue);
        }
        

        /* --- Benefits List --- */
        .benefits-list {
            list-style: none;
        }

        .benefit-item {
            display: grid;
            grid-template-columns: 50px 1fr;
            gap: 30px;
            align-items: start;
            padding: 30px 0;
            border-bottom: 1px solid var(--color-border);
        }
        
        .benefit-item:first-child {
            padding-top: 0;
        }
        
        .benefit-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .benefit-icon {
            width: 40px;
            height: 40px;
            stroke: var(--color-accent-blue);
            stroke-width: 1.5;
        }
        
        .benefit-item h3 {
            margin-bottom: 0.25em;
        }
        
        /* --- Content Block --- */
        #what-you-get .content-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        
        .content-list {
            list-style: none;
        }
        
        .content-list li {
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--color-border);
        }
        
        .content-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
        }
        
        .content-list svg {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            color: var(--color-accent-blue);
        }
        
        .visual-placeholder {
            background-color: var(--color-background-medium);
            height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--color-border);
            font-family: var(--font-header);
            font-size: 2rem;
            color: var(--color-text-secondary);
        }

        /* --- Steps Grid --- */
        .steps-grid-layout {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
        }

        .step-node {
            background-color: var(--color-background-medium);
            padding: 30px;
            border: 1px solid var(--color-border);
            position: relative;
            counter-increment: step-counter;
        }
        
        .step-node::before {
            content: '0' counter(step-counter);
            position: absolute;
            top: 20px;
            right: 20px;
            font-family: var(--font-header);
            font-size: 3rem;
            font-weight: bold;
            color: var(--color-border);
            z-index: 0;
            line-height: 1;
        }
        
        .step-node h3 {
            position: relative;
            z-index: 1;
        }
        
        .step-node p {
            position: relative;
            z-index: 1;
            margin-bottom: 0;
        }
        

        /* --- FAQ Accordion --- */
        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }
        
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            font-size: 1.25rem;
            color: var(--color-text-primary);
            text-align: left;
            padding: 25px 0;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            font-family: var(--font-header);
        }
        
        .faq-question:hover {
            color: var(--color-accent-blue);
        }
        
        .faq-icon {
            font-size: 2rem;
            font-weight: bold;
            color: var(--color-accent-blue);
            transition: transform 0.4s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease-out;
        }
        
        .faq-answer-content {
            padding-bottom: 25px;
        }
        
        .faq-answer-content p {
            margin-bottom: 1em;
        }
        .faq-answer-content p:last-child {
            margin-bottom: 0;
        }

        /* --- Testimonials --- */
        .testimonial-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
        }
        
        .testimonial-card {
            background-color: var(--color-background-medium);
            padding: 30px;
            border-left: 4px solid var(--color-accent-blue);
        }
        
        .testimonial-quote {
            font-size: 1.1rem;
            font-style: italic;
            margin-bottom: 20px;
        }
        
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .testimonial-author img {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            border: 2px solid var(--color-border);
        }
        
        .author-name {
            font-weight: bold;
            color: var(--color-text-primary);
        }
        
        .author-result {
            font-size: 0.9rem;
            color: var(--color-accent-blue);
        }
        
        /* --- Article Block --- */
        #article-section .section-title {
            text-align: center;
            font-family: var(--font-body);
            font-size: 1rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--color-text-secondary);
            margin-bottom: 10px;
        }
        
        #article-section .section-subtitle {
            text-align: center;
            font-size: clamp(2rem, 5vw, 3rem);
            font-family: var(--font-header);
            margin-bottom: 60px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.2;
        }
        
        #article-section h2 {
            font-size: 2rem;
            color: var(--color-accent-blue);
            border-bottom-color: var(--color-border);
            padding-bottom: 0.5rem;
            margin-top: 2.5em;
            margin-bottom: 1.5em;
        }
        
        #article-section p {
            color: var(--color-text-secondary);
            font-size: 1.1rem;
            line-height: 1.8;
            margin-bottom: 1.5em;
        }
        
        #article-section ul, #article-section ol {
            padding-left: 25px;
            margin-bottom: 1.5em;
            color: var(--color-text-secondary);
            font-size: 1.1rem;
        }
        
        #article-section li {
            margin-bottom: 0.75em;
        }
        
        #article-section img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 2em 0;
            border: 1px solid var(--color-border);
        }
        
        #article-section table {
            width: 100%;
            border-collapse: collapse;
            margin: 2em 0;
            font-size: 1rem;
        }
        
        #article-section th, #article-section td {
            text-align: left;
            padding: 15px;
            border: 1px solid var(--color-border);
        }
        
        #article-section thead {
            background-color: var(--color-background-medium);
        }
        
        #article-section th {
            font-family: var(--font-body);
            font-weight: bold;
            color: var(--color-text-primary);
        }
        
        #article-section tbody tr:nth-child(even) {
            background-color: rgba(30, 30, 30, 0.5);
        }
        
        #article-section strong, #article-section b {
            color: var(--color-text-primary);
            font-weight: 600;
        }
        

        /* --- Footer --- */
        .apex-footer {
            background-color: var(--color-background-medium);
            padding: 60px 0;
            font-size: 0.9rem;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
        }

        .footer-about .footer-logo {
            font-family: var(--font-header);
            font-size: 2rem;
            font-weight: bold;
            color: var(--color-text-primary);
            margin-bottom: 20px;
        }
        
        .footer-about .footer-logo .accent-dot {
            color: var(--color-accent-blue);
        }

        .footer-about p {
            max-width: 350px;
            color: var(--color-text-secondary);
            margin-bottom: 0;
        }

        .footer-links h4 {
            font-family: var(--font-body);
            font-size: 1rem;
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--color-text-primary);
            margin-bottom: 20px;
        }

        .footer-links ul {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: var(--color-text-secondary);
        }

        .footer-links a:hover {
            color: var(--color-accent-blue);
        }
        
        .footer-bottom {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid var(--color-border);
            text-align: center;
            color: var(--color-text-secondary);
        }

        /* --- Responsive --- */
        @media (max-width: 992px) {
            .steps-grid-layout {
                grid-template-columns: repeat(2, 1fr);
            }
            #what-you-get .content-grid {
                grid-template-columns: 1fr;
            }
            .visual-placeholder {
                margin-top: 40px;
                height: 300px;
            }
        }

        @media (max-width: 768px) {
            .apex-header {
                padding: 10px 0;
            }
            .header-grid {
                flex-direction: column;
                gap: 15px;
            }
            .hero-matrix {
                padding-top: 150px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .footer-about p {
                margin: 0 auto;
            }
            .steps-grid-layout {
                grid-template-columns: 1fr;
            }
        }