body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f5f5f5;
            margin: 0;
            padding: 0;
        }
        main {
            padding-top: 80px;
            padding-bottom: 40px;
        }
        .container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 20px;
            background-color: #fff;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        h1 {
            color: #1e2c3a;
            font-size: 2.2em;
            text-align: center;
            padding-top: 20px;
            margin-bottom: 30px;
            border-bottom: 2px solid #ff6700;
            padding-bottom: 15px;
        }
        h2 {
            color: #ff6700;
            font-size: 1.5em;
            margin-top: 30px;
            padding-bottom: 8px;
            border-bottom: 1px solid #eee;
        }
        p {
            margin-bottom: 15px;
        }
        .section {
            padding: 15px 0;
        }
        .date {
            text-align: center;
            font-style: italic;
            margin-bottom: 30px;
        }
        ul {
            padding-left: 20px;
        }
        li {
            margin-bottom: 8px;
        }
        .nav-section {
            background-color: #f8f8f8;
            padding: 15px;
            border-radius: 5px;
            margin-bottom: 30px;
        }
        .nav-section a {
            display: inline-block;
            margin-right: 15px;
            color: #ff6700;
            text-decoration: none;
            font-weight: 500;
        }
        .nav-section a:hover {
            text-decoration: underline;
        }