* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', sans-serif;
        }

        body {
            background-color: #F7F7F7;
            /* 全局左右预留安全边距，杜绝手机贴边 */
            padding: 50px 20px;
        }

        .whatsapp-section {
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
            /* 区块内部额外上下间距，彻底防贴边 */
            padding: 20px 0;
        }

        .whatsapp-section h1 {
            font-size: 42px;
            font-weight: 700;
            color: #000000;
            margin-bottom: 20px;
        }

        .whatsapp-section .intro-text {
            font-size: 18px;
            color: #333333;
            line-height: 1.6;
            margin-bottom: 40px;
        }

        .content-wrapper {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 60px;
            flex-wrap: wrap;
        }

        .qrcode-wrapper img {
            width: 260px;
            height: auto;
        }

        .info-wrapper {
            text-align: left;
        }

        .info-wrapper h2 {
            font-size: 28px;
            font-weight: 600;
            color: #000000;
            margin-bottom: 20px;
        }

        .info-wrapper .desc-text {
            font-size: 18px;
            color: #333333;
            margin-bottom: 20px;
        }

        /* 列表：统一对勾+文字对齐 */
        .info-wrapper ul {
            list-style: none;
            padding-left: 0;
            margin-bottom: 40px;
        }

        .info-wrapper ul li {
            font-size: 18px;
            color: #333333;
            margin-bottom: 10px;
            /* 统一左侧留白，文字整体对齐 */
            padding-left: 32px;
            position: relative;
            line-height: 1.5;
        }

        .info-wrapper ul li::before {
            content: "✓";
            color: #FFCC00;
            font-weight: bold;
            position: absolute;
            left: 0;
            top: 0;
            /* 垂直居中，和文字对齐 */
            transform: translateY(0);
        }

        /* 按钮样式 */
        .whatsapp-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 15px 30px;
            background-color: #FFCC00;
            border: 2px solid #FFCC00;
            color: #ffffff;
            font-size: 18px;
            font-weight: 500;
            text-decoration: none;
            border-radius: 6px;
            transition: all 0.3s ease;
        }

        .whatsapp-btn:hover {
            background-color: #ffffff;
            border-color: #FFCC00;
            color: #FFCC00;
        }

        .whatsapp-btn svg {
            width: 20px;
            height: 20px;
            fill: #ffffff;
            transition: fill 0.3s ease;
        }

        .whatsapp-btn:hover svg {
            fill: #FFCC00;
        }

        /* 移动端适配（768px 以下手机） */
        @media (max-width: 768px) {
            body {
                padding: 40px 20px;
            }

            .whatsapp-section h1 {
                font-size: 32px;
            }

            .content-wrapper {
                flex-direction: column;
                gap: 30px;
            }

            .info-wrapper {
                text-align: center;
            }

            .info-wrapper ul {
                display: inline-block;
                text-align: left;
            }
        }