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

        body {
            font-family: 'Open Sans', Arial, sans-serif;
            line-height: 1.6;
            color: #505050;
            background: #fff;
        }

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

        /* Header */
        #header {
            background: #fff;
            box-shadow: 0 3px 3px -3px rgba(0, 0, 0, 0.2);
            position: relative;
            z-index: 1001;
            padding: 20px 0;
        }

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

        #logo h1 {
            font-size: 24px;
            font-weight: 600;
            color: #505050;
        }

        #logo a {
            text-decoration: none;
            color: inherit;
        }

        /* Navigation */
        .menu ul {
            list-style: none;
            display: flex;
            margin: 0;
            padding: 0;
        }

        .menu ul li {
            position: relative;
        }

        .menu ul li a {
            display: block;
            color: #888;
            text-decoration: none;
            padding: 15px 18px;
            font-weight: 400;
            font-size: 14px;
            border-bottom: 3px solid transparent;
            transition: all 0.3s ease;
        }

        .menu ul li a:hover,
        .menu ul li.current-menu-item a {
            color: #73b819;
            border-bottom-color: #73b819;
            background-color: #fbfbfb;
        }

        .menu ul ul {
            position: absolute;
            top: 100%;
            left: 0;
            background: #fff;
            box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.1);
            border: 1px solid #e4e4e4;
            border-top: 3px solid #73b819;
            border-radius: 0 0 3px 3px;
            min-width: 200px;
            display: none;
            flex-direction: column;
        }

        .menu ul li:hover ul {
            display: flex;
        }

        .menu ul ul li a {
            padding: 10px 15px;
            border-bottom: 1px solid #e8e8e8;
            background: transparent;
        }

        .menu ul ul li:last-child a {
            border-bottom: none;
        }

        /* Main Content */
        main {
            padding: 40px 0;
            min-height: 60vh;
        }

        h1 {
            font-size: 32px;
            color: #505050;
            margin-bottom: 30px;
            font-weight: 500;
        }

        article {
            margin-bottom: 40px;
        }

        article p {
            margin-bottom: 20px;
            line-height: 1.8;
            color: #666;
        }

        article h2,
        article h3,
        article h4 {
            color: #505050;
            margin: 30px 0 15px 0;
            font-weight: 500;
        }

        article h2 {
            font-size: 24px;
        }

        article h3 {
            font-size: 20px;
        }

        article h4 {
            font-size: 18px;
        }

        /* Transition Section */
        .transition-section {
            background: #f8f8f8;
            padding: 30px 0;
            margin: 40px 0;
            border-radius: 3px;
        }

        .transition-section p {
            color: #666;
            line-height: 1.8;
            margin: 0;
        }

        /* Links Section */
        .links-section {
            background: #fff;
            padding: 40px 0;
            border-top: 1px solid #f0f0f0;
        }

        .links-section h3 {
            color: #505050;
            font-size: 20px;
            margin-bottom: 20px;
            font-weight: 500;
            border-bottom: 2px solid #73b819;
            padding-bottom: 10px;
        }

        .links-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .links-section ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .links-section li {
            margin-bottom: 8px;
        }

        .links-section li a {
            color: #888;
            text-decoration: none;
            padding: 5px 0;
            display: block;
            transition: color 0.3s ease;
            position: relative;
            padding-left: 15px;
        }

        .links-section li a:before {
            content: "▶";
            position: absolute;
            left: 0;
            color: #73b819;
            font-size: 10px;
            top: 50%;
            transform: translateY(-50%);
        }

        .links-section li a:hover {
            color: #73b819;
        }

        /* Footer */
        #footer {
            background: #f8f8f8;
            padding: 35px 0 20px 0;
            margin-top: 60px;
        }

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

        #footer h3 {
            color: #505050;
            font-size: 18px;
            margin-bottom: 15px;
            font-weight: 500;
        }

        #footer p,
        #footer ul li {
            color: #888;
            line-height: 1.6;
        }

        #footer ul {
            list-style: none;
        }

        #footer ul li {
            margin-bottom: 5px;
        }

        #footer ul li a {
            color: #888;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        #footer ul li a:hover {
            color: #73b819;
        }

        #footer-bottom {
            background: #73b819;
            color: #fff;
            text-align: center;
            padding: 15px 0;
        }

        /* Mobile Navigation */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: #888;
            cursor: pointer;
            padding: 10px;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }

            .menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            }

            .menu.active {
                display: block;
            }

            .menu ul {
                flex-direction: column;
            }

            .menu ul ul {
                position: static;
                display: block;
                box-shadow: none;
                border: none;
                padding-left: 20px;
                background: #f8f8f8;
            }

            #header .container {
                flex-wrap: wrap;
                position: relative;
            }

            h1 {
                font-size: 28px;
            }

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

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

            .container {
                padding: 0 15px;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 24px;
            }

            .menu ul li a {
                padding: 12px 15px;
            }

            main {
                padding: 20px 0;
            }

            .transition-section {
                padding: 20px 0;
                margin: 20px 0;
            }

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