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

        body {
            background: #e3e7d9;
            font-family: Arial, Helvetica, sans-serif;
            font-size: 14px;
            line-height: 1.6;
            color: #4e4e4e;
        }

        .container {
            max-width: 1004px;
            margin: 0 auto;
            background: #fefefe;
            box-shadow: 0 0 20px rgba(0,0,0,0.1);
        }

        header {
            background: linear-gradient(to bottom, #5a6a7a 0%, #4a5a6a 100%);
            padding: 0;
        }

        .top-bar {
            background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAeCAYAAADtlXTHAAAAF0lEQVQIW2P8//8/AyMjIwMDAwMDEwAHmQMCs/St4QAAAABJRU5ErkJggg==) repeat-x;
            padding: 0 32px;
            height: 30px;
        }

        nav {
            float: left;
        }

        nav ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        nav li {
            display: inline-block;
            margin: 0;
        }

        nav a {
            display: block;
            padding: 5px 11px;
            color: #7d8992;
            text-decoration: none;
            font-weight: bold;
            font-size: 13px;
            border-right: 1px solid #8a95a0;
            line-height: 20px;
        }

        nav a:hover {
            color: #000;
        }

        nav .active a {
            background: #4ec1d6;
            color: #fff;
        }

        nav .green-btn a {
            background: #79a009;
            color: #fff;
            border-right: none;
        }

        .logo-area {
            padding: 20px 32px;
            background: #fefefe;
        }

        .logo {
            font-size: 28px;
            font-weight: bold;
            color: #4ec1d6;
            text-decoration: none;
        }

        .logo span {
            color: #79a009;
        }

        main {
            padding: 20px 32px 40px;
            background: #fefefe;
        }

        h1 {
            color: #4e4e4e;
            font-size: 28px;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 3px solid #4ec1d6;
        }

        article {
            background: #fff;
            padding: 25px;
            margin-bottom: 30px;
            border-radius: 4px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }

        article h2 {
            color: #4ec1d6;
            font-size: 20px;
            margin: 25px 0 15px;
        }

        article h3 {
            color: #4e4e4e;
            font-size: 18px;
            margin: 20px 0 12px;
        }

        article h4 {
            color: #4e4e4e;
            font-size: 16px;
            margin: 18px 0 10px;
        }

        article p {
            margin-bottom: 15px;
            line-height: 1.7;
        }

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

        article li {
            margin-bottom: 8px;
            line-height: 1.6;
        }

        article strong {
            color: #4ec1d6;
            font-weight: bold;
        }

        .transition-section {
            background: #f6f9fb;
            padding: 25px;
            margin-bottom: 30px;
            border-left: 4px solid #4ec1d6;
            border-radius: 4px;
        }

        .transition-section p {
            margin-bottom: 12px;
            line-height: 1.7;
        }

        .links-section {
            background: #fff;
            padding: 30px;
            border-radius: 4px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            margin-bottom: 30px;
        }

        .links-section h3 {
            color: #4e4e4e;
            font-size: 18px;
            margin: 25px 0 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e3e7d9;
        }

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

        .links-section ul {
            list-style: none;
            margin: 0;
            padding: 0;
            column-count: 2;
            column-gap: 30px;
        }

        .links-section li {
            margin-bottom: 10px;
            break-inside: avoid;
            padding-left: 18px;
            position: relative;
        }

        .links-section li:before {
            content: "▸";
            color: #4ec1d6;
            position: absolute;
            left: 0;
            font-size: 14px;
        }

        .links-section a {
            color: #4ec1d6;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .links-section a:hover {
            color: #79a009;
            text-decoration: underline;
        }

        footer {
            background: #edf0f2;
            padding: 25px 32px;
            font-size: 11px;
            color: #6e6e6e;
            border-top: 1px solid #d0d5d8;
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-left {
            flex: 1;
            min-width: 250px;
        }

        .footer-right {
            flex: 1;
            min-width: 250px;
            text-align: right;
        }

        .footer-menu {
            list-style: none;
            margin: 8px 0;
        }

        .footer-menu li {
            display: inline;
            margin-left: 15px;
            padding-left: 15px;
            border-left: 1px solid #8a8a8a;
        }

        .footer-menu li:first-child {
            border-left: none;
            margin-left: 0;
            padding-left: 0;
        }

        .footer-menu a {
            color: #4ec1d6;
            text-decoration: none;
        }

        .footer-menu a:hover {
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            .top-bar {
                padding: 0 15px;
            }

            nav {
                float: none;
                width: 100%;
            }

            nav ul {
                display: flex;
                flex-wrap: wrap;
                justify-content: center;
            }

            nav li {
                flex: 0 0 auto;
            }

            nav a {
                padding: 5px 8px;
                font-size: 11px;
            }

            .logo-area {
                padding: 15px;
                text-align: center;
            }

            main {
                padding: 15px;
            }

            h1 {
                font-size: 24px;
            }

            article {
                padding: 20px;
            }

            .transition-section {
                padding: 20px;
            }

            .links-section {
                padding: 20px;
            }

            .links-section ul {
                column-count: 1;
            }

            footer {
                padding: 20px 15px;
            }

            .footer-content {
                flex-direction: column;
            }

            .footer-right {
                text-align: left;
            }

            .footer-menu {
                margin: 15px 0 8px;
            }

            .footer-menu li {
                display: block;
                margin: 5px 0;
                padding: 0;
                border: none;
            }
        }

        @media (max-width: 480px) {
            nav a {
                padding: 5px 6px;
                font-size: 10px;
            }

            h1 {
                font-size: 20px;
            }

            article h2 {
                font-size: 18px;
            }

            article h3 {
                font-size: 16px;
            }

            .links-section h3 {
                font-size: 16px;
            }
        }