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

        body {
            font-family: Verdana, Arial, Helvetica, sans-serif;
            font-size: 13px;
            line-height: 1.6;
            color: #525252;
            background: #f3f3f3;
        }

        .wrapper {
            max-width: 980px;
            margin: 0 auto;
            background: #fff;
        }

        header {
            background: #f3f3f3;
            padding: 20px;
            border-bottom: 1px solid #d5d5d5;
        }

        .header-content {
            max-width: 980px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .logo-area {
            flex: 0 0 auto;
        }

        .site-title {
            color: #1b87d1;
            font-size: 18px;
            font-weight: normal;
            letter-spacing: -1px;
            margin: 0;
        }

        nav {
            background: linear-gradient(to bottom, #2a6ba8 0%, #1b5a9a 100%);
            border-bottom: 3px solid #164e89;
        }

        .nav-content {
            max-width: 980px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-content a {
            color: #fff;
            text-decoration: none;
            padding: 12px 20px;
            display: block;
            text-transform: uppercase;
            font-size: 11px;
            font-weight: bold;
            border-right: 1px solid rgba(255, 255, 255, 0.2);
            transition: background 0.3s;
        }

        .nav-content a:hover {
            background: rgba(0, 0, 0, 0.2);
        }

        .nav-content a:last-child {
            border-right: none;
        }

        main {
            max-width: 980px;
            margin: 0 auto;
            padding: 30px 20px;
        }

        h1 {
            color: #1b87d1;
            font-size: 24px;
            font-weight: normal;
            letter-spacing: -1px;
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 3px solid #d6e2ef;
            text-transform: uppercase;
        }

        article {
            margin-bottom: 40px;
        }

        article h2 {
            color: #1b87d1;
            font-size: 18px;
            font-weight: normal;
            letter-spacing: -1px;
            margin: 25px 0 15px;
        }

        article h3 {
            color: #1b87d1;
            font-size: 16px;
            font-weight: normal;
            letter-spacing: -1px;
            margin: 20px 0 12px;
        }

        article p {
            margin-bottom: 15px;
            text-align: justify;
            line-height: 1.8;
        }

        article ul, article ol {
            margin: 15px 0 15px 30px;
        }

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

        .transition-section {
            background: #f8f8f8;
            padding: 20px;
            margin: 30px 0;
            border-left: 4px solid #1b87d1;
        }

        .transition-section p {
            margin-bottom: 10px;
            text-align: justify;
        }

        .links-section {
            background: #f8f8f8;
            padding: 30px 20px;
            margin-top: 40px;
            border-top: 3px solid #d6e2ef;
        }

        .links-section h2 {
            color: #1b87d1;
            font-size: 20px;
            font-weight: normal;
            letter-spacing: -1px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .links-section h3 {
            color: #194f8d;
            font-size: 16px;
            font-weight: bold;
            margin: 25px 0 12px;
            padding-bottom: 5px;
            border-bottom: 2px solid #d6e2ef;
        }

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

        .links-section li {
            break-inside: avoid;
            margin-bottom: 10px;
            padding-left: 20px;
            position: relative;
        }

        .links-section li:before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            width: 8px;
            height: 8px;
            background: #1b87d1;
            border-radius: 50%;
        }

        .links-section a {
            color: #06c;
            text-decoration: none;
            transition: color 0.3s;
        }

        .links-section a:hover {
            color: #1b87d1;
            text-decoration: underline;
        }

        footer {
            background: #f8f8f8;
            border-top: 1px solid #d5d5d5;
            padding: 20px;
            margin-top: 40px;
        }

        .footer-content {
            max-width: 980px;
            margin: 0 auto;
            text-align: center;
            font-size: 11px;
            color: #999;
        }

        .footer-content p {
            margin-bottom: 5px;
        }

        .footer-content a {
            color: #999;
            text-decoration: none;
            margin: 0 8px;
        }

        .footer-content a:hover {
            color: #06c;
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: flex-start;
            }

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

            .nav-content a {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.2);
            }

            h1 {
                font-size: 20px;
            }

            article h2 {
                font-size: 16px;
            }

            article h3 {
                font-size: 14px;
            }

            .links-section ul {
                columns: 1;
            }

            main {
                padding: 20px 15px;
            }
        }

        @media (max-width: 480px) {
            body {
                font-size: 12px;
            }

            h1 {
                font-size: 18px;
            }

            .site-title {
                font-size: 16px;
            }

            .nav-content a {
                padding: 10px 15px;
                font-size: 10px;
            }
        }