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

        body {
            background: #d7d7d7;
            font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
            font-size: 13px;
            line-height: 1.6;
            color: #2b2b2b;
        }

        a {
            color: #116da6;
            text-decoration: none;
        }

        a:hover {
            text-decoration: underline;
        }

        .network-top {
            background: #2b2b2b;
            padding: 8px 0;
            font-size: 11px;
        }

        .network-top .container {
            max-width: 970px;
            margin: 0 auto;
            padding: 0 20px;
            color: #fff;
        }

        .network-top a {
            color: #fff;
            padding: 0 10px;
        }

        .all-wrapper {
            max-width: 970px;
            margin: 30px auto;
            background: #fff;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .main-header {
            background: #fff;
            padding: 25px 20px;
            border-bottom: 3px solid #2b2b2b;
        }

        .logo-area {
            font-size: 28px;
            font-weight: normal;
            color: #2b2b2b;
            margin: 0;
        }

        .sub-navigation {
            background: #f8f8f8;
            border-bottom: 1px solid #ddd;
            padding: 15px 20px;
        }

        .sub-navigation ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }

        .sub-navigation li {
            font-size: 12px;
        }

        .sub-navigation a {
            color: #2b2b2b;
        }

        .main-content {
            padding: 40px 20px;
            max-width: 750px;
        }

        h1 {
            font-size: 32px;
            font-weight: normal;
            line-height: 1.3;
            color: #2b2b2b;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 1px solid #ddd;
        }

        article {
            margin-bottom: 40px;
        }

        article h2 {
            font-size: 24px;
            font-weight: normal;
            margin: 30px 0 15px;
            color: #2b2b2b;
        }

        article h3 {
            font-size: 20px;
            font-weight: normal;
            margin: 25px 0 12px;
            color: #2b2b2b;
        }

        article h4 {
            font-size: 16px;
            font-weight: bold;
            margin: 20px 0 10px;
            color: #2b2b2b;
        }

        article p {
            margin-bottom: 15px;
            line-height: 1.8;
            font-size: 14px;
        }

        article ul, article ol {
            margin: 15px 0 15px 25px;
        }

        article li {
            margin-bottom: 8px;
            line-height: 1.7;
        }

        article blockquote {
            background: #f1f1f1;
            padding: 20px;
            margin: 20px 0;
            border-left: 4px solid #116da6;
            font-style: italic;
        }

        .transition-section {
            margin: 40px 0;
            padding: 25px 0;
            border-top: 1px solid #ddd;
        }

        .transition-section p {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 15px;
        }

        .links-section {
            background: #f8f8f8;
            padding: 30px 20px;
            margin: 40px -20px 0;
        }

        .links-section h2 {
            font-size: 22px;
            font-weight: normal;
            color: #2b2b2b;
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 2px solid #ddd;
        }

        .links-section h3 {
            font-size: 18px;
            font-weight: normal;
            color: #2b2b2b;
            margin: 25px 0 12px;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px 20px;
            margin-bottom: 30px;
        }

        .links-section li {
            font-size: 13px;
            line-height: 1.6;
            padding-left: 15px;
            position: relative;
        }

        .links-section li:before {
            content: "▸";
            position: absolute;
            left: 0;
            color: #116da6;
        }

        .links-section a {
            color: #2b2b2b;
        }

        .links-section a:hover {
            color: #116da6;
        }

        .footer {
            background: #fff;
            padding: 30px 20px;
            border-top: 2px solid #ddd;
            font-size: 11px;
            color: #808080;
            line-height: 1.8;
        }

        .footer p {
            margin-bottom: 8px;
        }

        .footer a {
            color: #116da6;
        }

        @media (max-width: 768px) {
            .all-wrapper {
                margin: 0;
            }

            h1 {
                font-size: 26px;
            }

            article h2 {
                font-size: 20px;
            }

            article h3 {
                font-size: 18px;
            }

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

            .sub-navigation ul {
                gap: 10px;
            }

            .main-content {
                padding: 30px 15px;
            }

            .links-section {
                padding: 20px 15px;
                margin: 30px -15px 0;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 22px;
            }

            article h2 {
                font-size: 18px;
            }

            .network-top {
                font-size: 10px;
            }

            .logo-area {
                font-size: 22px;
            }
        }