* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft Yahei", "PingFang SC", sans-serif;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }

        /* ========== 1. 头部 Logo + 导航 ========== */
        header {
            height: 72px;
            background: #ffffff;
            color: #1f2937;
            line-height: 72px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 99;
        }

        .header-wrap {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 22px;
            font-weight: 700;
            color: #111827;
        }

        .nav-list {
            display: flex;
            gap: 32px;
        }

        .nav-list li a {
            font-size: 15px;
            color: #374151;
            transition: color 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .nav-list li a:hover {
            color: #f59e0b;
        }

        /* ========== 2. Hero 产品展示区 ========== */
        .hero {
            padding: 72px 0;
            background: #f8fafc;
        }

        .hero-wrap {
            display: flex;
            align-items: center;
            gap: 56px;
        }

        .hero-left {
            flex: 1;
        }

        .hero-title {
            font-size: 40px;
            line-height: 1.35;
            margin-bottom: 20px;
            color: #111827;
            font-weight: 700;
        }

        .hero-desc {
            font-size: 16px;
            color: #4b5563;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .btn {
            padding: 13px 26px;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            font-size: 15px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.25s ease;
            border: 1px solid transparent;
        }

        .btn-buy {
            background: #d97706;
            color: #ffffff;
        }

        .btn-buy:hover {
            background: #b45309;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(217, 119, 6, 0.35);
        }

        .btn-download {
            background: #16a34a;
            color: #ffffff;
        }

        .btn-download:hover {
            background: #15803d;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(22, 163, 74, 0.35);
        }

        .btn-refund {
            background: #f3f4f6;
            color: #374151;
            border: 1px solid #e5e7eb;
        }

        .btn-refund:hover {
            background: #e5e7eb;
        }

        .hero-right {
            flex: 1;
        }

        .hero-img {
            width: 100%;
            border-radius: 14px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
        }

        /* ========== 3. 卡片式产品介绍 ========== */
        .product-card-section {
            padding: 72px 0;
            background: #ffffff;
        }

        .section-title {
            text-align: center;
            font-size: 30px;
            margin-bottom: 48px;
            color: #111827;
            font-weight: 700;
        }

        .card-wrap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .product-card {
            background: #ffffff;
            padding: 36px 28px;
            border-radius: 14px;
            border: 1px solid #eef2f7;
            transition: all 0.3s ease;
        }

        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.08);
            border-color: #d97706;
        }

        .product-card h3 {
            font-size: 20px;
            margin-bottom: 14px;
            color: #111827;
        }

        .product-card p {
            color: #4b5563;
            line-height: 1.75;
            font-size: 15px;
        }

        /* ========== 4. 产品图片说明板块 ========== */
        .img-desc-section {
            padding: 72px 0;
            background: #f8fafc;
        }

        .img-desc-wrap {
            display: flex;
            align-items: center;
            gap: 56px;
        }

        .desc-img-box {
            flex: 1;
        }

        .desc-img-box img {
            width: 100%;
            border-radius: 14px;
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.1);
        }

        .desc-text-box {
            flex: 1;
        }

        .desc-text-box h3 {
            font-size: 28px;
            margin-bottom: 20px;
            color: #111827;
        }

        .desc-text-box p {
            color: #4b5563;
            line-height: 1.8;
            margin-bottom: 28px;
            font-size: 15px;
        }

        .btn-more {
            background: #111827;
            color: #fff;
            padding: 13px 28px;
            border-radius: 8px;
            display: inline-block;
            font-weight: 500;
            transition: all 0.25s ease;
        }

        .btn-more:hover {
            background: #374151;
            transform: translateY(-2px);
        }

        /* ========== 5. 公司说明 + 数据 ========== */
        .company-section {
            padding: 72px 0;
            background: #ffffff;
        }

        .company-wrap {
            display: flex;
            gap: 56px;
            align-items: center;
        }

        .company-left {
            flex: 1;
        }

        .company-left h3 {
            font-size: 28px;
            margin-bottom: 20px;
            color: #111827;
        }

        .company-left p {
            color: #4b5563;
            line-height: 1.85;
            font-size: 15px;
        }

        .company-right {
            flex: 1;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .data-item {
            text-align: center;
            padding: 32px 20px;
            background: #ffffff;
            border: 1px solid #eef2f7;
            border-radius: 14px;
            transition: all 0.3s ease;
        }

        .data-item:hover {
            border-color: #d97706;
            box-shadow: 0 14px 30px rgba(217, 119, 6, 0.12);
            transform: translateY(-4px);
        }

        .data-num {
            font-size: 34px;
            color: #111827;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .data-name {
            color: #4b5563;
            font-size: 14px;
        }

        /* ========== 6. 新闻资讯三栏 ========== */
        .news-section {
            padding: 72px 0;
            background: #f8fafc;
        }

        .news-wrap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-block {
            background: #ffffff;
            padding: 32px 28px;
            border-radius: 14px;
            border: 1px solid #eef2f7;
            transition: all 0.3s ease;
        }

        .news-block:hover {
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.08);
        }

        .news-block h3 {
            font-size: 20px;
            padding-bottom: 16px;
            border-bottom: 1px solid #eef2f7;
            margin-bottom: 20px;
            color: #111827;
        }

        .news-list li {
            padding: 12px 0;
            border-bottom: 1px dashed #e5e7eb;
        }

        .news-list li:last-child {
            border-bottom: none;
        }

        .news-list a {
            color: #374151;
            font-size: 14.5px;
            transition: color 0.25s ease;
        }

        .news-list a:hover {
            color: #d97706;
        }

        /* ========== 7. 友情链接 ========== */
        .link-section {
            padding: 56px 0;
            background: #ffffff;
        }

        .link-wrap h3 {
            font-size: 24px;
            margin-bottom: 24px;
            color: #111827;
        }

        .link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .link-list a {
            color: #374151;
            padding: 10px 18px;
            background: #f3f4f6;
            border-radius: 8px;
            font-size: 14px;
            transition: all 0.25s ease;
        }

        .link-list a:hover {
            background: #111827;
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* ========== 8. 底部版权 ========== */
        footer {
            background: #111827;
            color: #9ca3af;
            text-align: center;
            padding: 36px 0;
            font-size: 14px;
        }

        footer .footer-top {
            margin-bottom: 14px;
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
        }

        footer .footer-top a {
            color: #d1d5db;
            transition: color 0.25s ease;
        }

        footer .footer-top a:hover {
            color: #ffffff;
        }

        /* ========== 移动端自适应 ========== */
        @media (max-width: 992px) {
            .card-wrap,
            .news-wrap {
                grid-template-columns: repeat(2, 1fr);
            }

            .company-right {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            header {
                height: auto;
                padding: 16px 0;
                line-height: 1.6;
            }

            .header-wrap {
                flex-direction: column;
                gap: 14px;
            }

            .nav-list {
                gap: 18px;
                flex-wrap: wrap;
                justify-content: center;
            }

            .hero-wrap,
            .img-desc-wrap,
            .company-wrap {
                flex-direction: column;
            }

            .hero-title {
                font-size: 30px;
            }

            .card-wrap,
            .news-wrap {
                grid-template-columns: 1fr;
            }

            .company-right {
                grid-template-columns: repeat(3, 1fr);
            }

            .btn-group {
                justify-content: flex-start;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 26px;
            }

            .section-title {
                font-size: 24px;
            }

            .company-right {
                grid-template-columns: 1fr;
            }

            .btn-group {
                justify-content: center;
            }
        }