body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            line-height: 1.6;
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            color: #2c3e4f;
            background: #fefefe;
        }
        h1, h2, h3 {
            color: #1a2a36;
        }
        h1 {
            border-bottom: 3px solid #4c9f70;
            padding-bottom: 10px;
        }
        h2 {
            margin-top: 40px;
            border-left: 5px solid #4c9f70;
            padding-left: 15px;
            background: #f5f9f0;
            line-height: 1.3;
        }
        .toc {
            background: #eef4ec;
            padding: 15px 25px;
            border-radius: 16px;
            margin: 30px 0;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        .toc h3 {
            margin-top: 0;
            font-size: 1.4rem;
        }
        .toc ul {
            list-style: none;
            padding-left: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .toc li {
            background: white;
            border-radius: 40px;
            padding: 6px 18px;
            transition: 0.2s;
        }
        .toc a {
            text-decoration: none;
            color: #2a6e3a;
            font-weight: 500;
        }
        .toc a:hover {
            text-decoration: underline;
            color: #1c4d2a;
        }
        .highlight-product {
            background: #fff7e8;
            border-left: 6px solid #d4a373;
            padding: 12px 20px;
            margin: 20px 0;
            border-radius: 14px;
            font-style: normal;
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
        }
        .product-badge {
            background: #4c9f70;
            color: white;
            font-size: 0.85rem;
            padding: 4px 12px;
            border-radius: 30px;
            display: inline-block;
            margin-bottom: 10px;
        }
        footer {
            margin-top: 60px;
            border-top: 1px solid #ddd;
            padding-top: 20px;
            font-size: 0.85rem;
            color: #6c7a89;
            text-align: center;
        }
        @media (max-width: 700px) {
            body {
                padding: 15px;
            }
            .toc ul {
                flex-direction: column;
                gap: 8px;
            }
            .toc li {
                width: fit-content;
            }
        }