@charset "UTF-8";

/* ==========================================================================
   自定义样式表 (style.css)
   项目：华创精工
   ========================================================================== */

/* 全局基础设置 */
:root {
    --primary-color: #0b459c;
    /* 品牌蓝 */
    --text-color: #333333;
    --text-light: #666666;
    --bg-light: #f5f6f8;
}

*+h1,
*+h2,
*+h3,
*+h4,
*+h5,
*+h6 {
    margin-top: 0;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    color: var(--text-color);
    background-color: #ffffff;
    min-width: 100%;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    outline: none;
}

a:focus,
button:focus {
    outline: none;
}

.wrapper {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    padding: 0 20px;
}

/* 公共标题组件 */
.section-title {
    text-align: center;
    padding: 60px 0 40px;
}

.section-title h2 {
    font-size: 32px;
    color: var(--primary-color);
    font-weight: bold;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.section-title .line {
    width: 40px;
    height: 2px;
    background-color: #333;
    margin: 0 auto;
}

.section-title.white-title h2 {
    color: #ffffff;
}

.section-title.white-title .line {
    background-color: #ffffff;
}

/* ==========================================================================
   头部导航 (Header)
   ========================================================================== */
.header {
    width: 100%;
    height: 90px;
    background: var(--primary-color); /* 设置蓝色背景 */
    z-index: 1000;
}

.header-inner {
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 20px;
}

.logo img {
    height: 25px;
}

.header-search {
    display: flex;
    align-items: center;
    margin-left: 40px;
}

.nav {
    flex: 1;
    display: flex;
    justify-content: center;
    /* 居中对齐 */
}

.nav ul {
    display: flex;
    list-style: none;
}

.nav ul li {
    margin: 0 25px;
    /* 调整间距 */
    position: relative;
}

.nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 20px;
    font-weight: 400;
    transition: color 0.3s;
}

.nav ul li.active a,
.nav ul li:hover a {
    color: #fff;
    font-weight: 500;
}

.search-btn {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background-color: transparent; /* 背景透明，适应蓝色头部 */
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s;
}

.search-btn img {
    width: 45px;
}

.search-btn:hover {
    transform: scale(1.1);
}

/* ==========================================================================
   Banner 区域
   ========================================================================== */
.banner {
    position: relative;
    width: 100%;
    height: 700px;
    overflow: hidden;
}

.banner-list {
    position: relative;
    width: 100%;
    height: 100%;
}

.banner-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s;
    z-index: 1;
}

.banner-item.active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
}

.banner-overlay-content {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    height: 100%;
    display: flex;
    justify-content: flex-start;
    align-items: flex-end; /* 整体下移，改为底部对齐 */
    padding-bottom: 150px; /* 距离底部间距 */
    color: #fff;
    pointer-events: none; /* 防止遮挡背景点击（如果需要的话） */
}

.banner-text-box {
    width: 100%;
    pointer-events: auto; /* 恢复文字区域的交互 */
    position: relative;
}

.sub-title-row {
    margin-bottom: 40px;
}

.main-title {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    letter-spacing: 4px;
}

/* main-title 内的图片尺寸控制 */
.main-title img {
    height: 60px;
    width: auto;
    display: block;
}

.sub-title {
    font-size: 64px;
    font-weight: bold;
    letter-spacing: 2px;
}

.banner-en-box {
    margin-top: -20px;
    margin-bottom: 40px;
}

.banner-en-box .line {
    width: 60px;
    height: 3px; /* 进一步加粗到 3px */
    background: #ffffff;
    margin-bottom: 15px;
}

.banner-en-title {
    font-size: 24px;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 1px;
    text-transform: capitalize;
}

.dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: -100px; /* 使用绝对定位脱离文档流，不影响上方内容位置 */
}

.dot {
    width: 12px;
    height: 12px;
    background-color: #ffffff;
    cursor: pointer;
    transition: all 0.3s;
}

.dot.active {
    background-color: #0b459c; /* 激活态蓝色 */
}

.banner-links {
    display: flex;
    gap: 20px;
    justify-content: flex-start;
}

.banner-link-btn {
    width: 320px;
    height: 60px;
    border: 1px solid rgba(255, 255, 255, 0.6); /* 白色边框，参考 products 的 banner-btn */
    border-radius: 8px;
    display: flex;
    justify-content: center;
    gap: 15px;
    align-items: center;
    padding: 0 20px;
    background: rgba(255, 255, 255, 0.1); /* 增加一层极淡背景，更接近参考图效果 */
    color: #fff;
    font-size: 18px;
    text-decoration: none;
    transition: all 0.3s ease; /* 统一过渡曲线 */
    box-sizing: border-box;
}

.banner-link-btn:hover {
    background: #fff; /* hover 反白 */
    border-color: #fff;
    color: #000; /* 文字变黑 */
}

/* 右侧箭头：hover 时右移，参考 products 的 btn-arrow 动画 */
.banner-link-btn .btn-arrow {
    display: inline-block;
    margin-left: 10px;
    font-size: 20px;
    line-height: 1;
    transition: transform 0.3s ease;
}

.banner-link-btn:hover .btn-arrow {
    transform: translateX(5px);
}

/* 响应式断点控制 */
.mobile-break {
    display: none;
}

@media (max-width: 992px) {
    .main-title {
        font-size: 52px;
    }

    .sub-title {
        font-size: 36px;
    }

    .banner {
        height: 80vh;
    }
}

@media (max-width: 768px) {
    .header {
        height: 60px;
    }

    .logo img {
        height: 20px;
    }

    .header-menu-container {
        display: none; /* 默认隐藏菜单，通常需要 JS 切换 */
    }

    .main-title {
        font-size: 24px;
        margin-bottom: 10px;
        line-height: 1.2;
    }

    .main-title img {
        height: 35px; /* 移动端缩小标题图片 */
        margin: 0 auto;
    }

    .sub-title {
        font-size: 22px; /* 移动端缩小副标题 */
        margin-bottom: 15px;
        line-height: 1.3;
    }

    .banner {
        height: 600px; /* 固定高度，或者使用 vh */
        min-height: auto;
        padding: 40px 0;
    }

    /* 修正移动端 Banner 文字位置 */
    .banner-overlay-content {
        justify-content: center;
        text-align: center;
        padding-left: 0;
        padding-bottom: 80px; /* 调整底部距离 */
    }

    .banner-text-box {
        padding: 0 15px;
    }

    .sub-title-row {
        margin-bottom: 20px;
    }

    .banner-en-box {
        margin-top: 0;
        margin-bottom: 30px;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .banner-en-box .line {
        width: 40px;
        height: 2px;
        margin-bottom: 10px;
    }

    .banner-en-title {
        font-size: 14px;
        line-height: 1.4;
    }

    .banner-links {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }

    .banner-link-btn {
        width: 100%;
        max-width: 300px; /* 限制按钮最大宽度 */
        height: 50px;
        font-size: 14px;
        padding: 0 15px;
    }

    .banner-link-btn .btn-arrow {
        font-size: 16px;
    }

    .dots {
        bottom: -50px;
    }

    /* 其他原有样式调整 */
    .mobile-break {
        display: block;
        height: 5px;
    }
}

/* ==========================================================================
   内容区域公共样式
   ========================================================================== */
.section-main-title {
    font-size: 48px;
    color: #333;
    font-weight: bold;
    margin-bottom: 50px;
    text-align: left;
}

.section-main-title.white {
    color: #fff;
}

/* ==========================================================================
   关于我们 & 应用领域 (共用背景包装)
   ========================================================================== */
.about-app-wrapper {
    background: url('../images/img/bg.jpg') no-repeat center center;
    background-size: cover;
    padding: 100px 0; /* 将 padding 移至包装层 */
}

/* ==========================================================================
   关于我们 (About Section)
   ========================================================================== */
.about-section {
    /* 移除背景和 padding */
}

.about-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.about-content {
    flex: 1;
    padding-right: 80px;
}

.about-title {
    font-size: 32px;
    line-height: 1.4;
    color: #333;
    margin-bottom: 30px;
    font-weight: bold;
}

.about-title .highlight {
    color: var(--primary-color);
}

.about-desc {
    font-size: 20px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 40px;
}

.about-btn {
    display: inline-flex;
    align-items: center;
    padding: 10px 25px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    color: #333;
    transition: all 0.3s;
}

.about-btn:hover {
    border-color: #0b459c;
    color: #0b459c;
}

.icon-arrow-right-small {
    margin-left: 10px;
    width: 14px;
    height: 14px;
    position: relative;
}

.icon-arrow-right-small::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 0;
    width: 14px;
    height: 1px;
    background: currentColor;
    transform: translateY(-50%);
}

.icon-arrow-right-small::before {
    content: '';
    position: absolute;
    top: 50%;
    right: 0;
    width: 5px;
    height: 5px;
    border-top: 1px solid currentColor;
    border-right: 1px solid currentColor;
    transform: translateY(-50%) rotate(45deg);
}

.about-image {
    width: 600px;
    border-radius: 20px;
    overflow: hidden;
}

.about-image img {
    width: 100%;
    display: block;
}

/* ==========================================================================
   应用领域 (Application)
   ========================================================================== */
.application-section {
    margin-top: 100px; /* 增加两个区块间的间距 */
}

.application-grid {
    display: flex;
    align-items: stretch;
    gap: 60px;
}

.application-left {
    width: 500px;
    background: #000;
    border-radius: 15px;
    overflow: hidden;
}

.application-left img {
    width: 100%;
    display: block;
    transition: opacity 0.5s ease;
}

.application-right {
    flex: 1;
    display: flex;
}

.app-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between; /* 均匀分布，占满高度 */
}

.app-list li {
    flex: 1; /* 每个项目占满可用空间 */
    display: flex;
    align-items: flex-start; /* 保持顶部对齐 */
    padding: 20px;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 12px;
    background: transparent;
}

.app-list li:hover {
    background-color: #f8faff;
}


.app-list li.active h3 {
    color: var(--primary-color);
    font-weight: bold;
}

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

.app-icon {
    width: 40px; /* 稍微缩小图标 */
    margin-right: 20px;
    margin-top: 10px; /* 增加上边距，使其与 H3 文字居中对齐 */
}

.app-icon img {
    width: 100%;
    filter: grayscale(100%); /* 默认灰色 */
    opacity: 0.6;
    transition: all 0.3s ease;
}

.app-list li.active .app-icon img,
.app-list li:hover .app-icon img {
    filter: grayscale(0);
    opacity: 1;
}

.app-info h3 {
    font-size: 32px;
    color: #333;
    margin-bottom: 0; /* 默认无间距 */
    transition: all 0.3s ease;
}

.app-list li.active .app-info h3 {
    margin-bottom: 10px; /* 激活时展开间距 */
}

.app-info p {
    font-size: 20px;
    color: #666; /* 稍微加深文字颜色提高可读性 */
    line-height: 1.6;
    margin: 0;
    max-height: 0; /* 使用 max-height 实现更平滑的展开动画 */
    overflow: hidden;
    transition: all 0.4s ease;
    opacity: 0;
}

.app-list li.active .app-info p {
    max-height: 100px; /* 足够容纳描述文字的高度 */
    opacity: 1;
}

/* ==========================================================================
   技术实力 (Tech Strength)
   ========================================================================== */
.tech-strength-section {
    padding: 100px 0;
    background: #000;
    color: #fff;
}

.tech-strength-section .wrapper {
    background: url('../images/img/cp5-bg.png') no-repeat center bottom;
    background-size: 120% auto;
    position: relative;
}

.tech-bg-box {
    position: relative;
    text-align: center;
    min-height: 650px;
}

.tech-callouts {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.callout {
    position: absolute;
    width: 280px;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    pointer-events: auto;
    background: rgba(0, 0, 0, 0.45);
    padding: 20px;
    border-radius: 12px;
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-sizing: border-box;
    /* 初始隐藏，等待进入视口触发动画 */
    opacity: 0;
    transform: translateY(30px) scale(0.96);
    transition:
        opacity 0.8s ease,
        transform 0.8s cubic-bezier(0.22, 0.61, 0.36, 1),
        border-color 0.4s ease,
        box-shadow 0.4s ease,
        background 0.4s ease;
    will-change: transform, opacity;
}

/* 进入视口后，移除初始位移与透明度 */
.callout.is-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* 各 callout 错开进入时间，形成依次浮现的效果 */
.callout.is-visible.callout-1 { transition-delay: 0.05s; }
.callout.is-visible.callout-2 { transition-delay: 0.20s; }
.callout.is-visible.callout-3 { transition-delay: 0.35s; }
.callout.is-visible.callout-4 { transition-delay: 0.50s; }
.callout.is-visible.callout-5 { transition-delay: 0.65s; }

/* 鼠标悬停：轻微上浮 + 高亮边框 + 投影 */
.callout:hover {
    transform: translateY(-6px) scale(1.02);
    border-color: rgba(248, 209, 134, 0.5);
    background: rgba(0, 0, 0, 0.6);
    box-shadow: 0 12px 32px rgba(248, 209, 134, 0.15);
}

/* 悬停时分隔线点亮并延展 */
.callout:hover .callout-line {
    background: linear-gradient(90deg, rgba(248, 209, 134, 0.8), rgba(255, 255, 255, 0.1));
}

/* highlight 关键字呼吸光效 */
.callout p .highlight {
    position: relative;
    transition: text-shadow 0.4s ease, color 0.4s ease;
}
.callout:hover p .highlight {
    color: #ffe1a8;
    text-shadow: 0 0 10px rgba(248, 209, 134, 0.6);
}

.callout h3 {
    font-size: clamp(16px, 1.2vw, 20px);
    font-weight: 700;
    margin-bottom: 0;
    color: #fff;
    letter-spacing: 2px;
}

.callout p {
    font-size: clamp(13px, 0.9vw, 15px);
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
}

.callout p .highlight {
    color: #f8d186;
    font-weight: 500;
}

.callout-line {
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
    margin: 15px 0;
    margin-top: auto;
}

.callout-1 { text-align: left; }
.callout-2 { right: 0; text-align: right; }
.callout-3 { bottom: 8%; text-align: left; }
.callout-4 { bottom: 8%; right: 0; text-align: right; }
.callout-5 { display: none; }

/* ==========================================================================
   新闻资讯 (News Grid)
   ========================================================================== */
.news-section {
    padding: 50px 0;
    background: #fff;
}

/* 新闻资讯：标题与"查看更多"按钮 横向排布 */
.news-header {
    display: flex;
    justify-content: space-between; /* 左右两端对齐：标题居左，按钮居右 */
    align-items: center;
    margin-bottom: 50px;
}

/* 与 .news-header 配合时，去除标题自带的下外边距，避免与容器 margin 叠加 */
.news-header .section-main-title {
    margin-bottom: 0;
}

/* "查看更多" 按钮样式，参考 .about-btn 风格 */
.news-more-btn {
    display: inline-flex;
    align-items: center;
    padding: 10px 25px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    color: #333;
    text-decoration: none;
    transition: all 0.3s;
}

.news-more-btn:hover {
    border-color: #0b459c;
    color: #0b459c;
}

.news-grid {
    display: flex;
    gap: 30px;
}

.news-card {
    flex: 1;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.news-card-img {
    height: 200px;
    overflow: hidden;
}

.news-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

/* 鼠标移入新闻卡片时图片放大 */
.news-card:hover .news-card-img img {
    transform: scale(1.08);
}

.news-card-body {
    padding: 20px;
}

.news-card-body h3 {
    font-size: 16px;
    line-height: 1.5;
    color: #333;
    margin-bottom: 20px;
    height: 72px;
    overflow: hidden;
}

.news-date {
    font-size: 16px;
    color: #999;
}

/* ==========================================================================
   联系我们 (Contact)
   ========================================================================== */
.contact-section {
    padding: 50px 0;
    background: #fff;
}

.contact-form {
    max-width: 1200px;
    margin: 0 auto;
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.form-input {
    flex: 1;
    height: 50px;
    border: none;
    border-bottom: 1px solid #eee;
    padding: 0 10px;
    font-size: 14px;
    outline: none;
}

.form-textarea {
    width: 100%;
    height: 120px;
    border: none;
    border-bottom: 1px solid #eee;
    padding: 15px 10px;
    font-size: 14px;
    outline: none;
    resize: none;
}

.form-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
}

.privacy-tip {
    font-size: 12px;
    color: #999;
}

/* 隐私协议勾选项：让 checkbox 与文案左对齐显示 */
.privacy-check {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

.privacy-check input[type="checkbox"] {
    width: 14px;
    height: 14px;
    margin: 0;
    cursor: pointer;
    accent-color: #0b459c;
}

.privacy-tip a {
    color: #0b459c;
}

.submit-btn {
    width: 100px;
    height: 40px;
    background: #000;
    color: #fff;
    border: none;
    font-size: 14px;
    cursor: pointer;
}

/* ==========================================================================
   页脚 (Footer)
   ========================================================================== */
.footer {
    background: #0b459c;
    color: #fff;
    padding-top: 80px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    padding-bottom: 60px;
}

.footer-cols {
    display: flex;
    gap: 100px;
}

.footer-cols dl dt {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 30px;
}

.footer-cols dl dd {
    margin-bottom: 15px;
}

.footer-cols dl a {
    color: rgba(255,255,255,0.7);
    font-size: 13px;
}

.footer-cols dl a:hover {
    color: #fff;
}

.footer-info {
    text-align: right;
}

.footer-info h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.footer-info p {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 20px;
}

.footer-qr img {
    width: 120px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    font-size: 12px;
    color: rgba(255,255,255,0.5);
}

.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
}

.f-contact-info span {
    margin-right: 30px;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   响应式适配 (Responsive)
   ========================================================================== */
/* ==========================================================================
   移动端菜单适配 (Mobile Menu)
   ========================================================================== */
.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    padding: 0;
    width: 30px;
    height: 24px;
    cursor: pointer;
    z-index: 1002;
    position: relative;
    transition: all 0.3s;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: #fff;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    transition: all 0.3s;
}

.menu-toggle::before,
.menu-toggle::after {
    content: '';
    display: block;
    width: 100%;
    height: 2px;
    background-color: #fff;
    position: absolute;
    left: 0;
    transition: all 0.3s;
}

.menu-toggle::before {
    top: 0;
}

.menu-toggle::after {
    bottom: 0;
}

.menu-toggle:hover {
    opacity: 0.8;
}

/* 激活状态：变成X */
.menu-toggle.active span {
    opacity: 0;
}

.menu-toggle.active::before {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
    background-color: #333;
}

.menu-toggle.active::after {
    bottom: 50%;
    transform: translateY(50%) rotate(-45deg);
    background-color: #333;
}

.menu-toggle.active:hover {
    background: transparent;
}

.header-menu-container {
    display: flex;
    flex: 1;
    align-items: center;
    justify-content: flex-end;
}

@media (max-width: 1200px) {
    body {
        min-width: auto;
    }

    .wrapper,
    .header-inner,
    .tech-content,
    .tech-box {
        width: 100% !important;
        padding-left: 20px;
        padding-right: 20px;
        box-sizing: border-box;
    }

    .nav ul li {
        margin-left: 30px;
    }

    .prev-card {
        transform: translateX(-300px);
        width: 400px;
    }

    .next-card {
        transform: translateX(300px);
        width: 400px;
    }

    .active-card {
        width: 80%;
        height: 230px;
    }

    .product-slider {
        height: 250px;
    }

    .footer-links {
        gap: 40px;
    }
}

@media (max-width: 992px) {
    .active-card {
        width: 90%;
        margin: 0 auto;
        left: 0;
        transform: none;
        position: relative;
    }

    .active-card .img-box {
        height: 300px;
    }

    .prev-card,
    .next-card {
        display: none;
    }

    /* 平板以下隐藏侧边卡片 */

    .footer-main {
        flex-direction: column;
        gap: 40px;
        padding: 40px 20px;
    }

    .footer-contact {
        border-left: none;
        padding-left: 0;
        border-top: 1px solid #eee;
        padding-top: 30px;
    }

    .news-item {
        width: calc((100% - 60px) / 3);
    }

    /* 每行显示3个 */
}

@media (max-width: 768px) {

    html,
    body {
        min-width: auto;
        width: 100%;
        max-width: 100vw;
        overflow-x: hidden;
        position: relative;
        margin: 0;
        padding: 0;
    }

    /* 隐藏可能溢出的装饰性元素或调整位置 */
    .tech-arrow {
        display: none !important;
        /* 移动端隐藏悬浮箭头，防止撑开页面 */
    }

    .header {
        height: 60px;
    }

    .header-inner {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        height: 100%;
        padding: 0 15px;
        width: 100% !important;
        /* 确保占满宽度 */
        max-width: 100%;
        /* 防止溢出 */
        box-sizing: border-box;
        /* 包含 padding */
    }

    .menu-toggle {
        display: block;
    }

    /* 移动端全屏菜单样式 */
    .header-menu-container {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        /* 使用100%避免滚动条问题 */
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        z-index: 1001;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transform: translateY(-100%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.4s;
        visibility: hidden;
        padding: 0;
        box-sizing: border-box;
        /* 防止padding溢出 */
    }

    .header-menu-container.active {
        transform: translateY(0);
        visibility: visible;
    }

    .nav {
        margin-top: 0;
        width: 100%;
        flex: initial;
        justify-content: center;
        /* 修复移动端导航内容不居中的问题 */
    }

    .nav ul {
        flex-direction: column;
        justify-content: center;
        gap: 30px;
        text-align: center;
        padding: 0;
    }

    .nav ul li {
        margin-left: 0;
    }

    .nav ul li a {
        color: #333;
        font-size: 18px;
        font-weight: bold;
    }

    /* 覆盖移动端菜单点击/选中时的样式，避免变成白色 */
    .nav ul li:hover a,
    .nav ul li.active a {
        color: #0051a8; /* 使用主色调 */
        opacity: 1;
    }

    .nav ul li:hover a::after,
    .nav ul li.active a::after {
        display: none; /* 移动端不需要下划线 */
    }

    /* 搜索按钮在菜单中 */
    .header-search {
        margin-top: 40px;
        margin-left: 0;
    }

    .header-search .icon path {
        fill: #333;
        /* 修改图标颜色为深色以适应白色背景 */
    }

    .banner {
        margin-top: 60px;
        height: 400px; /* 移动端固定较小的高度 */
        padding: 0;
    }

    .tech-box {
        padding: 40px 20px 20px;
    }

    .tech-tag {
        left: 20px;
        top: -20px;
        padding: 0 20px;
        font-size: 14px;
        height: 30px;
    }

    .news-item {
        width: calc((100% - 30px) / 2);
    }

    /* 每行显示2个 */
    .news-slider-wrap {
        padding: 0 20px;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 30px;
    }

    .footer-links dl {
        width: 45%;
    }

    /* 移动端 callout 改为流式布局 */
    .tech-callouts {
        position: static;
        height: auto;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 20px;
        margin-top: 30px;
        pointer-events: auto;
    }

    .callout {
        position: static;
        width: 100%;
        max-width: 500px;
        text-align: center !important;
        min-height: auto;
    }

    .callout-line {
        margin: 15px auto !important;
    }
}

@media (max-width: 480px) {
    .news-item {
        width: 100%;
    }

    /* 每行显示1个 */
    .active-card .img-box {
        height: 200px;
    }

    .active-card .prod-info {
        padding: 20px;
    }

    .active-card h3 {
        font-size: 16px;
    }

    .active-card p {
        font-size: 16px;
    }

    .section-title {
        padding: 40px 0 20px;
    }

    .section-title h2 {
        font-size: 24px;
    }

    .footer-links {
        gap: 20px;
        /* 减小间距以适应小屏幕 */
    }

    .footer-links dl {
        width: 45%;
        /* 改为两列布局 */
    }

    .scroll-tips {
        flex-wrap: wrap;
        gap: 10px;
    }
}

/* ==========================================================================
   移动端整体适配补充（针对当前页面实际板块）
   ========================================================================== */

/* 平板及以下：768px */
@media (max-width: 768px) {
    /* 公共标题 */
    .section-main-title {
        font-size: 24px;
        margin-bottom: 30px;
        text-align: center;
    }

    /* Banner 文字按钮 */
    .banner-overlay-content {
        padding-bottom: 40px;
        align-items: center;
    }

    .banner-links {
        flex-direction: column;
        gap: 12px;
    }

    .banner-link-btn {
        height: 56px;
        font-size: 14px;
        padding: 0 18px;
    }

    /* 关于我们 + 应用领域 共用容器 */
    .about-app-wrapper {
        padding: 50px 0;
    }

    /* 关于我们 */
    .about-inner {
        flex-direction: column;
        gap: 30px;
    }

    .about-content {
        padding-right: 0;
        text-align: center;
    }

    .about-title {
        font-size: 22px;
        margin-bottom: 18px;
    }

    .about-desc {
        font-size: 14px;
        line-height: 1.7;
        margin-bottom: 25px;
    }

    .about-desc br {
        display: none;
    }

    .about-image {
        width: 100%;
        border-radius: 12px;
    }

    /* 应用领域 */
    .application-section {
        margin-top: 50px;
    }

    .application-grid {
        flex-direction: column;
        gap: 25px;
    }

    .application-left {
        width: 100%;
        border-radius: 12px;
    }

    .app-list li {
        padding: 15px;
        border-radius: 8px;
    }

    .app-icon {
        width: 28px;
        margin-right: 14px;
    }

    .app-info h3 {
        font-size: 16px;
    }

    .app-info p {
        font-size: 13px;
    }

    /* 技术实力区 */
    .tech-strength-section {
        padding: 50px 0;
    }

    .tech-strength-section .wrapper {
        background-size: cover;
    }

    .tech-bg-box {
        min-height: auto;
    }

    .callout {
        padding: 18px;
    }

    .callout h3 {
        font-size: 18px;
        letter-spacing: 1px;
    }

    .callout p {
        font-size: 14px;
        line-height: 1.7;
    }

    /* 新闻资讯 */
    .news-section {
        padding: 40px 0;
    }

    .news-grid {
        flex-direction: column;
        gap: 20px;
    }

    .news-card-img {
        height: 180px;
    }

    .news-card-body {
        padding: 16px;
    }

    .news-card-body h3 {
        font-size: 15px;
        height: auto;
        max-height: 66px;
        margin-bottom: 12px;
    }

    /* 联系我们 表单 */
    .contact-section {
        padding: 40px 0;
    }

    .form-row {
        flex-direction: column;
        gap: 12px;
        margin-bottom: 12px;
    }

    .form-input {
        height: 44px;
        font-size: 14px;
    }

    .form-textarea {
        height: 100px;
    }

    .form-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 18px;
        margin-top: 20px;
    }

    .submit-btn {
        width: 100%;
        height: 44px;
    }

    .privacy-tip {
        font-size: 12px;
        line-height: 1.6;
    }

    /* 页脚 */
    .footer {
        padding-top: 40px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 30px;
        padding-bottom: 30px;
    }

    .footer-cols {
        flex-wrap: wrap;
        gap: 30px 40px;
    }

    .footer-cols dl dt {
        margin-bottom: 15px;
    }

    .footer-cols dl dd {
        margin-bottom: 10px;
    }

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

    .footer-info h3 {
        font-size: 18px;
    }

    .footer-qr img {
        width: 100px;
    }

    .footer-bottom-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        text-align: left;
    }

    .f-contact-info {
        display: flex;
        flex-direction: column;
        gap: 6px;
    }

    .f-contact-info span {
        margin-right: 0;
    }
}

/* 小屏手机：480px */
@media (max-width: 480px) {
    /* 公共标题进一步缩小 */
    .section-main-title {
        font-size: 20px;
        margin-bottom: 24px;
    }

    /* Banner */
    .main-title {
        font-size: 24px;
        letter-spacing: 2px;
    }

    .sub-title {
        font-size: 20px;
        letter-spacing: 1px;
    }

    .banner-link-btn {
        height: 50px;
        font-size: 13px;
        padding: 0 14px;
    }

    /* 关于我们 */
    .about-title {
        font-size: 19px;
    }

    .about-title br {
        display: none;
    }

    .about-desc {
        font-size: 13px;
    }

    /* 技术实力 */
    .callout {
        padding: 14px;
    }

    .callout h3 {
        font-size: 16px;
    }

    .callout p {
        font-size: 13px;
    }

    /* 新闻 */
    .news-card-img {
        height: 160px;
    }

    .news-card-body h3 {
        font-size: 14px;
    }

    /* 页脚两列展示 */
    .footer-cols {
        gap: 20px;
    }

    .footer-cols dl {
        width: calc(50% - 20px);
    }

    .footer-cols dl dt {
        font-size: 15px;
    }

    .footer-cols dl a {
        font-size: 12px;
    }
}



        /* ==========================================================================
           关于我们页面专用样式（内嵌）
           ========================================================================== */

        /* 顶部 Banner（导航为 absolute 定位，浮于 banner 之上，无需 margin-top） */
        .about-banner {
            position: relative;
            height: 580px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .about-banner .banner-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            z-index: 1;
        }

        .about-banner .banner-bg::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.4);
        }

        .about-banner .banner-content {
            position: relative;
            z-index: 2;
            text-align: left;
            color: #fff;
        }

        .about-banner .banner-title-img h1 {
            font-size: 48px;
            color: #fff;
            font-weight: bold;
            letter-spacing: 4px;
            margin: 0;
            position: relative;
            padding-bottom: 20px;
        }

        .about-banner .banner-title-img h1::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background: #fff;
        }

        .about-banner .banner-title-img p {
            margin-top: 20px;
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 2px;
        }

        /* 公司介绍 */
        .company-intro {
            padding: 50px 0;
            background: #fcfcfc;
            position: relative;
            overflow: hidden;
        }

        .intro-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 60px;
            position: relative;
            z-index: 2;
            background: #fff;
            padding: 60px 80px;
            border: 1px solid #f0f0f0;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
            border-radius: 12px;
        }

        .intro-left {
            flex: 1;
        }

        .intro-title h2 {
            font-size: 36px;
            color: #333;
            margin: 0 0 15px;
            font-weight: bold;
        }

        .intro-title .line {
            width: 50px;
            height: 4px;
            background-color: var(--primary-color);
            margin-bottom: 40px;
        }

        .intro-content p {
            font-size: 16px;
            color: #666;
            line-height: 2;
            margin-bottom: 24px;
            text-align: justify;
            text-indent: 2em;
        }

        .intro-right {
            flex: 1;
        }

        .video-trigger {
            position: relative;
            cursor: pointer;
            overflow: hidden;
            border-radius: 8px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }

        .video-trigger:hover .intro-img {
            transform: scale(1.05);
        }

        .intro-img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: 20px;
            transition: transform 0.5s ease;
        }

        .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 80px;
            height: 80px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            z-index: 10;
        }

        .play-btn svg {
            width: 64px;
            height: 64px;
        }

        /* 视频弹窗 */
        .video-modal {
            display: none;
            position: fixed;
            z-index: 2000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.9);
            align-items: center;
            justify-content: center;
        }

        .video-modal.active {
            display: flex;
        }

        .video-modal-content {
            position: relative;
            width: 80%;
            max-width: 1000px;
        }

        .video-modal-content video {
            width: 100%;
            display: block;
            border-radius: 8px;
        }

        .close-video {
            position: absolute;
            top: -40px;
            right: 0;
            color: #fff;
            font-size: 35px;
            font-weight: bold;
            cursor: pointer;
            line-height: 1;
        }

        .close-video:hover {
            color: var(--primary-color);
        }

        /* 董事长致辞 */
        .chairman-speech {
            padding: 100px 0;
            background: #fff;
            border-top: 1px solid #f0f0f0;
        }

        .chairman-container {
            display: flex;
            align-items: flex-start;
            gap: 60px;
        }

        .chairman-left {
            flex: 0 0 45%;
        }

        .chairman-title h2 {
            font-size: 36px;
            color: #333;
            margin: 0 0 15px;
            font-weight: bold;
        }

        .chairman-title .line {
            width: 50px;
            height: 4px;
            background-color: var(--primary-color);
            margin-bottom: 30px;
        }

        .chairman-img-box {
            position: relative;
            display: flex;
            align-items: flex-end;
            background: #f5f6f8;
            border-radius: 8px;
            min-height: 460px;
            justify-content: center;
            overflow: hidden;
        }

        .chairman-photo {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .chairman-right {
            flex: 1;
            padding-top: 80px;
        }

        .speech-wrapper {
            position: relative;
            padding: 30px 40px;
        }

        .quote-mark {
            position: absolute;
            font-family: Georgia, serif;
            font-size: 80px;
            color: var(--primary-color);
            opacity: 0.15;
            line-height: 1;
        }

        .quote-mark.top {
            top: 0;
            left: 0;
        }

        .quote-mark.bottom {
            bottom: -10px;
            right: 0;
        }

        .speech-text p {
            font-size: 16px;
            color: #666;
            line-height: 2;
            margin-bottom: 22px;
            text-align: justify;
        }

        /* 特色板块 */
        .feature-cards {
            padding: 60px 0 100px;
            background: #fff;
        }

        .feature-container {
            display: flex;
            gap: 30px;
        }

        .feature-card {
            flex: 1;
            height: 300px;
            border-radius: 15px;
            overflow: hidden;
            background-size: cover;
            background-position: center;
            background-color: var(--primary-color);
            position: relative;
            cursor: pointer;
            transition: transform 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-10px);
        }

        .card-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(11, 69, 156, 0.55);
            padding: 35px 30px;
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            color: #fff;
            box-sizing: border-box;
        }

        .card-overlay h3 {
            font-size: 26px;
            font-weight: bold;
            margin: 0 0 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .card-overlay h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: #fff;
        }

        .card-overlay p {
            font-size: 15px;
            line-height: 1.6;
            margin: 0 0 8px;
            font-weight: 300;
            opacity: 0.9;
        }

        /* 响应式适配 */
        @media (max-width: 1200px) {
            .about-banner {
                height: 380px;
            }

            .intro-container {
                flex-direction: column;
                padding: 40px 24px;
            }

            .intro-left,
            .intro-right {
                width: 100%;
                flex: none;
            }

            .chairman-container {
                flex-direction: column;
                gap: 40px;
            }

            .chairman-left,
            .chairman-right {
                width: 100%;
                flex: none;
                padding-top: 0;
            }

            .feature-container {
                flex-wrap: wrap;
            }

            .feature-card {
                flex: 1 1 calc(50% - 30px);
            }
        }

        @media (max-width: 768px) {
            .about-banner {
                height: 280px;
            }

            .about-banner .banner-title-img h1 {
                font-size: 30px;
            }

            .company-intro,
            .chairman-speech {
                padding: 60px 0;
            }

            .intro-title h2,
            .chairman-title h2 {
                font-size: 28px;
            }

            .feature-card {
                flex: 1 1 100%;
                height: 240px;
            }
        }