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

        body {
            background: #fff;
            font-family: 'Open Sans', Arial, sans-serif;
            color: #333;
            line-height: 1.7;
        }

        /* 主容器 */
        .dizik-about-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px 20px 40px;
        }

        /* 公用按钮基础样式 */
        .btn-primary {
            display: inline-block;
            background: #2e967f;
            color: #fff;
            padding: 12px 28px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: bold;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-primary:hover {
            background: #26856A;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
        }
        .btn-outline-light {
            display: inline-block;
            background: #fff;
            color: #2e967f;
            padding: 12px 28px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: bold;
            transition: all 0.3s ease;
        }
        .btn-outline-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
        }
        /* 导航小按钮样式 */
        .nav-tag {
            display: inline-block;
            background: #2e967f;
            color: #fff;
            padding: 8px 16px;
            border-radius: 4px;
            text-decoration: none;
            font-size: 14px;
            font-weight: 400;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }
        .nav-tag:hover,
        .nav-tag.active {
            background: #26856A;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
            font-weight: bold;
            color: #fff;
        }

        /* 卡片通用悬停效果 */
        .hover-card {
            transition: all 0.3s ease;
        }
        .hover-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
        }
        .product-card {
            background: #f5f8f7;
            padding: 18px;
            border-radius: 6px;
            transition: all 0.3s ease;
        }
        .product-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        }

        /* 标题下划线 */
        .section-title {
            font-size: 26px;
            color: #222;
            border-bottom: 2px solid #2e967f;
            padding-bottom: 10px;
            margin-bottom: 25px;
            font-weight: 600;
        }

        /* 双图网格自适应 */
        .img-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 25px;
        }
        .img-grid img {
            width: 100%;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            object-fit: cover;
        }

        /* 内容板块默认隐藏，选中显示 */
        .about-section {
            display: none;
            margin-bottom: 60px !important;
        }
        .about-section.show {
            display: block !important;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .img-grid {
                grid-template-columns: 1fr;
                gap: 15px;
            }
            .section-title {
                font-size: 22px;
            }
            .btn-primary, .btn-outline-light {
                padding: 10px 20px;
                font-size: 14px;
            }
        }
        @media (max-width: 480px) {
            .dizik-about-container {
                padding: 15px;
            }
            .nav-tag {
                padding: 6px 12px;
                font-size: 12px;
            }
        }

        /* 品牌logo区域 */
        .brand-logos {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 30px;
            flex-wrap: wrap;
            align-items: center;
        }
        .brand-logos img {
            height: 60px;
            width: auto;
            max-width: 140px;
            object-fit: contain;
        }

        /* 三列网格 */
        .grid-3cols {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }
        .grid-4cols {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 15px;
        }
        .why-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 15px;
        }

        /* 内联文字微调 */
        .text-accent {
            color: #2e967f;
            font-weight: bold;
        }
        .back-to-top {
            text-align: right;
            margin-top: 20px;
        }
        .back-to-top a {
            color: #2e967f;
            text-decoration: none;
            font-weight: bold;
            transition: all 0.3s ease;
        }
        .back-to-top a:hover {
            color: #26856A;
            transform: translateY(-2px);
            display: inline-block;
        }
        .brand-card {
            background: #f9f9f9;
            padding: 25px;
            border-radius: 8px;
            border-top: 4px solid #2e967f;
            transition: all 0.3s ease;
        }
        .brand-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
        }
        .brand-card h3 {
            margin: 0 0 10px 0;
            font-size: 18px;
            color: #222;
            font-weight: 600;
        }
        .brand-card p {
            margin: 0;
            font-size: 14px;
            color: #555;
            font-weight: 400;
        }
        .brand-card a {
            color: #2e967f;
            font-size: 13px;
            margin-top: 10px;
            display: inline-block;
            text-decoration: none;
            font-weight: 600;
        }
        .brand-card a:hover {
            text-decoration: underline;
        }