@media (max-width: 1023px) {
    body {
        flex-direction: column;
        overflow: unset;
    }

    .pc-nav {
        display: none !important;
    }

    .scroll-container {
        margin-left: 0 !important;
        width: 100% !important;
        height: auto;
        overflow-y: unset;
    }

    .fullscreen-slide {
        padding: 120px 24px 60px 24px;
        height: calc(100vh - 60px);
    }

    /* 移动端顶部状态梁 - 已将硬编码色彩替换为全局主题变量 */
    .mobile-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        background-color: var(--nav-bg);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--nav-border);
        padding: 18px 24px;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 200;
        transition: background-color 0.4s ease, border-color 0.4s ease;
    }

    .mobile-header .logo {
        font-size: 1rem;
        font-weight: 900;
        color: var(--text-title);
        letter-spacing: 2px;
        transition: color 0.4s ease;
    }

   /* 修复：彻底在移动端隐藏原有的右上角汉堡菜单 */
   .menu-btn {
       display: none !important;
   }
   /* 新增：在移动端激活并显示左下角的浮动汉堡菜单 */
   .fixed-menu-toggle {
       display: flex !important;
   }

    /* 侧拉菜单抽屉 - 已激活全局变量映射与硬件加速过渡 */
    .mobile-drawer {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        bottom: 0;
        right: -100%;
        width: 280px;
        background-color: var(--nav-bg);
        backdrop-filter: blur(20px);
        border-left: 1px solid var(--nav-border);
        z-index: 300;
        padding: 32px;
        transition: right 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), background-color 0.4s ease, border-color 0.4s ease;
    }

    .mobile-drawer.active {
        right: 0;
    }

    .drawer-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 50px;
    }

    .close-btn {
        background: none;
        border: none;
        color: var(--text-title);
        font-size: 1.4rem;
        cursor: pointer;
        transition: color 0.4s ease;
    }

    /* 移动端语言切换器布局对齐 */
    .lang-switcher-mob {
        margin-top: auto;
        font-size: 0.85rem;
        color: #444;
        padding-top: 24px;
        border-top: 1px solid var(--nav-border);
        transition: border-color 0.4s ease;
    }

    .lang-switcher-mob span {
        color: var(--text-main);
        cursor: pointer;
        transition: color 0.2s ease;
        padding: 0 4px;
    }

    .lang-switcher-mob span:hover {
        color: #FF6B00;
    }

    /* 移动端页脚堆叠重构 */
    .site-footer {
        flex-direction: column;
        gap: 16px;
        padding: 20px 24px;
        text-align: center;
    }

    .footer-left {
        flex-direction: column;
        gap: 8px;
    }

    .footer-right {
        gap: 16px;
        flex-wrap: wrap;
        justify-content: center;
    }

    /* 垫高移动端最后一屏的底部内边距，防止表单被页脚遮挡 */
    .slide-contact {
        padding-bottom: 120px !important;
    }
}

/* ==========================================================================
   MOBILE OVERRIDES FOR CONTACT FORM
   ========================================================================== */
@media screen and (max-width: 768px) {
    /* 1. 标题文字改小到现在的一半 (原 1.8rem -> 0.9rem) */
    .contact-box h2 {
        font-size: 0.9rem;
        margin-bottom: 24px;
    }

    /* 2. 表单内显示的文字缩小到现在的70% */
    .form-group label {
        font-size: 0.665rem; 
    }
    .form-group input:focus ~ label,
    .form-group input:not(:placeholder-shown) ~ label,
    .form-group textarea:focus ~ label,
    .form-group textarea:not(:placeholder-shown) ~ label {
        font-size: 0.525rem;
        top: -8px;
    }
    
    /* 同步缩小输入框基础字号与内边距以适配缩小后的标签 */
    .form-group input, 
    .form-group textarea {
        font-size: 0.7rem; 
        padding: 10px 12px;
    }

    /* 3. 姓名和联系人分行显示 */
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    /* [参数化配置] 在此处的 margin-bottom 调整每个文字输入框上下的间隔 */
    .form-group {
        margin-bottom: 25px; 
    }

    /* 4. 强制压缩人机验证码，避免溢出 */
    .turnstile-container {
        transform: scale(0.75);
        transform-origin: left center;
        margin-bottom: 16px;
    }

    /* 5. 整体表单上拉 80 像素，避免被页脚遮挡 */
    .contact-box {
        transform: translateY(-80px);
        padding: 32px 24px; /* 适当收缩移动端水平内边距 */
        max-width: 90%;
    }
}