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

        body {
            font-family: Verdana, Arial, sans-serif;
            font-size: 14px;
            line-height: 1.6;
            color: #333;
            background: #f8f4f8;
            margin: 0;
            padding: 0;
        }

        img {
            border: none;
            max-width: 100%;
            height: auto;
        }

        a {
            color: #444;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: #000;
            text-decoration: underline;
        }

        #container {
            max-width: 1200px;
            margin: 0 auto;
            background: #fff;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
        }

        header {
            background: linear-gradient(to bottom, #e8e4e8 0%, #d0ccd0 100%);
            border-bottom: 3px solid #888088;
            padding: 20px;
        }

        header h1 {
            font-size: 28px;
            color: #444;
            font-weight: bold;
            margin-bottom: 5px;
        }

        #main-content {
            padding: 30px;
            background: #fff;
        }

        article {
            margin-bottom: 40px;
            padding-bottom: 30px;
            border-bottom: 2px solid #e0e0e0;
        }

        article h2 {
            font-size: 24px;
            color: #333;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid #888088;
        }

        article h3 {
            font-size: 20px;
            color: #444;
            margin: 25px 0 12px;
        }

        article h4 {
            font-size: 18px;
            color: #555;
            margin: 20px 0 10px;
        }

        article p {
            margin-bottom: 15px;
            text-align: justify;
        }

        #transition-section {
            background: #f4f4f4;
            padding: 20px;
            margin: 30px 0;
            border-left: 4px solid #888088;
        }

        #transition-section p {
            margin-bottom: 10px;
            line-height: 1.8;
        }

        #links-section {
            background: #fbfbf8;
            padding: 30px;
            border: 1px solid #d0ccd0;
            margin-top: 30px;
        }

        #links-section h3 {
            font-size: 18px;
            color: #333;
            margin: 25px 0 15px;
            padding-left: 20px;
            position: relative;
        }

        #links-section h3:before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 13px;
            height: 13px;
            background: #888088;
            border-radius: 2px;
        }

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

        #links-section ul {
            list-style: none;
            column-count: 2;
            column-gap: 30px;
            margin-bottom: 20px;
        }

        #links-section li {
            margin-bottom: 8px;
            padding-left: 15px;
            position: relative;
            break-inside: avoid;
        }

        #links-section li:before {
            content: '▪';
            position: absolute;
            left: 0;
            color: #888088;
        }

        #links-section a {
            color: #555;
            display: inline-block;
        }

        #links-section a:hover {
            color: #000;
            text-decoration: underline;
        }

        footer {
            background: #e8e4e8;
            padding: 20px;
            text-align: center;
            font-size: 11px;
            color: #666;
            border-top: 1px solid #d0ccd0;
        }

        @media (max-width: 768px) {
            header h1 {
                font-size: 22px;
            }

            #main-content {
                padding: 20px 15px;
            }

            article h2 {
                font-size: 20px;
            }

            article h3 {
                font-size: 18px;
            }

            article h4 {
                font-size: 16px;
            }

            #links-section {
                padding: 20px 15px;
            }

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

            #transition-section {
                padding: 15px;
            }
        }

        @media (max-width: 480px) {
            body {
                font-size: 13px;
            }

            header {
                padding: 15px;
            }

            header h1 {
                font-size: 20px;
            }

            #main-content {
                padding: 15px 10px;
            }

            article h2 {
                font-size: 18px;
            }

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