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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #000;
            color: #fff;
            line-height: 1.6;
            overflow-x: hidden;
        }

        header {
            background-color: rgba(0, 0, 0, 0.9);
            padding: 20px 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid #333;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 30px;
        }

        nav ul li a {
            color: #fff;
            text-decoration: none;
            font-size: 16px;
            transition: color 0.3s ease;
            position: relative;
        }

        nav ul li a:hover {
            color: #ccc;
        }

        nav ul li a::before,
        nav ul li a::after {
            content: "|";
            opacity: 0;
            transition: opacity 0.3s ease, transform 0.3s ease;
            display: inline-block;
        }

        nav ul li a::before {
            margin-right: 10px;
            transform: translateX(20px);
        }

        nav ul li a::after {
            margin-left: 10px;
            transform: translateX(-20px);
        }

        nav ul li a:hover::before,
        nav ul li a:hover::after {
            opacity: 1;
            transform: translateX(0);
        }

        main {
            margin-top: 80px;
            padding: 40px 0;
            min-height: calc(100vh - 160px);
        }

        h1 {
            font-size: 48px;
            margin-bottom: 30px;
            text-align: center;
            font-weight: bold;
            letter-spacing: 1px;
            padding: 20px 0;
        }

        article {
            background-color: rgba(0, 0, 0, 0.8);
            padding: 40px;
            margin-bottom: 40px;
            border-left: 3px solid #fff;
        }

        article h2 {
            font-size: 36px;
            margin-bottom: 20px;
            margin-top: 30px;
        }

        article h3 {
            font-size: 28px;
            margin-bottom: 15px;
            margin-top: 25px;
        }

        article h4 {
            font-size: 24px;
            margin-bottom: 12px;
            margin-top: 20px;
        }

        article p {
            font-size: 16px;
            color: #c7c7c7;
            margin-bottom: 20px;
            word-spacing: 0.2em;
        }

        article ul,
        article ol {
            margin-left: 30px;
            margin-bottom: 20px;
            color: #c7c7c7;
        }

        article li {
            margin-bottom: 10px;
            font-size: 16px;
        }

        article hr {
            border: none;
            height: 1px;
            background-color: #333;
            margin: 30px 0;
        }

        .transition-section {
            background-color: rgba(0, 0, 0, 0.6);
            padding: 30px 40px;
            margin-bottom: 40px;
        }

        .transition-section p {
            font-size: 16px;
            color: #c7c7c7;
            margin-bottom: 15px;
        }

        .links-section {
            background-color: rgba(0, 0, 0, 0.8);
            padding: 40px;
            border-left: 3px solid #fff;
        }

        .links-section h3 {
            font-size: 28px;
            margin-bottom: 20px;
            margin-top: 30px;
            color: #fff;
        }

        .links-section h3:first-child {
            margin-top: 0;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px 30px;
            margin-bottom: 30px;
        }

        .links-section ul li {
            padding-left: 20px;
            position: relative;
        }

        .links-section ul li::before {
            content: "→";
            position: absolute;
            left: 0;
            color: #fff;
        }

        .links-section ul li a {
            color: #c7c7c7;
            text-decoration: none;
            transition: color 0.3s ease;
            font-size: 15px;
        }

        .links-section ul li a:hover {
            color: #fff;
        }

        footer {
            background-color: rgba(0, 0, 0, 0.9);
            color: #fff;
            text-align: center;
            padding: 20px;
            font-size: 13px;
            border-top: 1px solid #333;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 36px;
            }

            article {
                padding: 25px;
            }

            article h2 {
                font-size: 28px;
            }

            article h3 {
                font-size: 24px;
            }

            article h4 {
                font-size: 20px;
            }

            .links-section {
                padding: 25px;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            nav ul {
                gap: 15px;
            }

            nav ul li a {
                font-size: 14px;
            }

            .transition-section {
                padding: 20px 25px;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 28px;
            }

            article {
                padding: 20px;
            }

            article h2 {
                font-size: 24px;
            }

            article h3 {
                font-size: 20px;
            }

            article p,
            article li {
                font-size: 14px;
            }

            .links-section {
                padding: 20px;
            }

            .links-section h3 {
                font-size: 22px;
            }

            nav ul {
                flex-direction: column;
                gap: 10px;
            }
        }