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

        body {
            font-family: Helvetica, Arial, sans-serif;
            font-size: 14px;
            line-height: 1.7em;
            color: #474747;
            background: #e4e8ed;
        }

        .container {
            max-width: 960px;
            margin: 0 auto;
            padding: 0 20px;
        }

        header {
            background: #767676;
            color: #ffffff;
            padding: 20px 0;
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .logo {
            font-size: 24px;
            font-weight: bold;
        }

        .tagline {
            font-style: italic;
            color: #d2ffd2;
        }

        .header-links {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }

        .header-links a {
            color: #87cefd;
            text-decoration: none;
            font-size: 12px;
        }

        nav {
            background: #666;
            padding: 0;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-menu li {
            position: relative;
        }

        .nav-menu a {
            display: block;
            color: #ffffff;
            text-decoration: none;
            padding: 15px 20px;
            font-weight: bold;
            text-transform: uppercase;
            transition: background-color 0.3s;
        }

        .nav-menu a:hover,
        .nav-menu .active a {
            background: #444;
        }

        .showcase {
            background: #ffffff;
            padding: 40px 0;
            margin: 20px 0;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        main {
            background: #ffffff;
            padding: 30px 0;
            margin: 20px 0;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .main-content {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
        }

        .content-area {
            padding-right: 20px;
        }

        .sidebar {
            background: #f5f5f5;
            padding: 20px;
            border-radius: 8px;
        }

        h1 {
            font-size: 260%;
            color: #000;
            margin-bottom: 20px;
            letter-spacing: -1px;
            background: #ffffff;
            padding: 15px 25px;
            border-radius: 5px;
            box-shadow: 0 1px 5px rgba(0,0,0,0.1);
        }

        h2 {
            font-size: 200%;
            color: #000;
            margin: 20px 0 15px 0;
            letter-spacing: -1px;
        }

        h3 {
            font-size: 175%;
            color: #000;
            margin: 15px 0 10px 0;
            letter-spacing: -1px;
        }

        p {
            margin: 0 0 15px 0;
        }

        a {
            color: #0f630f;
            text-decoration: none;
        }

        a:hover {
            color: #0f630f;
            text-decoration: underline;
        }

        article {
            background: #ffffff;
            padding: 25px;
            margin-bottom: 20px;
            border-radius: 5px;
            box-shadow: 0 1px 5px rgba(0,0,0,0.1);
        }

        .transition-section {
            background: #ffffff;
            padding: 25px;
            margin: 20px 0;
            border-radius: 5px;
            box-shadow: 0 1px 5px rgba(0,0,0,0.1);
        }

        .links-section {
            background: #ffffff;
            padding: 25px;
            margin: 20px 0;
            border-radius: 5px;
            box-shadow: 0 1px 5px rgba(0,0,0,0.1);
        }

        .links-section h3 {
            background: #f0f0f0;
            padding: 10px 15px;
            margin: 0 0 15px 0;
            border-left: 4px solid #0f630f;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px 20px;
            margin-bottom: 25px;
        }

        .links-section li {
            padding: 8px 0;
            border-bottom: 1px dotted #ddd;
        }

        .links-section li:last-child {
            border-bottom: none;
        }

        .sidebar-module {
            background: #ffffff;
            margin-bottom: 20px;
            border-radius: 5px;
            box-shadow: 0 1px 5px rgba(0,0,0,0.1);
        }

        .sidebar-module h3 {
            background: #f0f0f0;
            padding: 10px 15px;
            margin: 0;
            font-size: 140%;
            border-radius: 5px 5px 0 0;
            border-left: 4px solid #0f630f;
        }

        .sidebar-module-content {
            padding: 15px;
        }

        .sidebar-module ul {
            list-style: none;
        }

        .sidebar-module li {
            padding: 5px 0;
            border-bottom: 1px dotted #ddd;
        }

        .sidebar-module li:last-child {
            border-bottom: none;
        }

        footer {
            background: #e0e0e0;
            color: #474747;
            padding: 30px 0 20px 0;
            margin-top: 40px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 20px;
        }

        .footer-section h4 {
            color: #000;
            margin-bottom: 15px;
            font-size: 120%;
        }

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

        .footer-section li {
            padding: 3px 0;
        }

        .footer-bottom {
            border-top: 1px solid #ccc;
            padding-top: 20px;
            text-align: center;
        }

        .footer-nav {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

        .footer-nav a {
            color: #474747;
            font-weight: bold;
        }

        .copyright {
            font-size: 90%;
            color: #666;
        }

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

            .header-content {
                flex-direction: column;
                gap: 15px;
                text-align: center;
            }

            .nav-menu {
                flex-direction: column;
            }

            .nav-menu a {
                padding: 12px 15px;
            }

            .main-content {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .content-area {
                padding-right: 0;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 5px;
            }

            .footer-content {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

            h1 {
                font-size: 200%;
                padding: 10px 15px;
            }

            h2 {
                font-size: 160%;
            }

            h3 {
                font-size: 140%;
            }
        }

        @media (max-width: 480px) {
            .showcase,
            main,
            article,
            .transition-section,
            .links-section,
            .sidebar-module {
                margin-left: -15px;
                margin-right: -15px;
                border-radius: 0;
            }

            h1 {
                font-size: 180%;
            }
        }