@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;
}

html {
    scroll-behavior: smooth; /* 平滑滚动 */
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    color: var(--text-color);
    background-color: #ffffff;
    margin: 0;
    padding: 0;
    overflow-x: hidden; /* 防止内容微溢出导致横向滚动 */
}

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

.wrapper {
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
    position: relative;
}

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

.section-title h2 {
    margin: 0;
}

.section-title .en-title {
    font-size: 1.75rem; /* 28px 转换为 rem */
    color: #666;
    font-weight: 300;
    letter-spacing: 2px;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.section-title .cn-title {
    font-size: 3.25rem; /* 使用 rem 替代原来的 32px/36px */
    color: var(--primary-color);
    font-weight: bold;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.section-title .line {
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 0 auto;
}

.section-title.white-title .en-title,
.section-title.white-title .cn-title {
    color: #ffffff;
}

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

/* ==========================================================================
   头部导航 (Header)
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background-color: var(--primary-color);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-inner {
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo img {
    max-height: 45px;
    height: auto;
}

.header-search {
    display: flex;
    align-items: center;
    margin-left: 60px;
}

.search-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s;
}

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

.nav {
    flex: 1;
    display: flex;
    justify-content: center; /* 将导航内容居中显示 */
}

.nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 70px; /* 增加导航项之间的间距使其更稀疏 */
    align-items: center;
}

.nav ul li {
    position: relative;
}

.nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    position: relative;
    padding: 10px 0;
    transition: color 0.3s;
}

.nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: #fff;
    transition: width 0.3s;
}

.nav ul li:hover a,
.nav ul li.active a {
    color: #fff;
    opacity: 0.8;
}

.nav ul li:hover a::after,
.nav ul li.active a::after {
    width: 20px;
}

.header-right {
    display: none;
    /* 已经移除了右侧区域容器，这个样式可以不用了，或者删掉 */
}

/* 如果后面不需要.header-right，上面的可以直接删掉，这里直接移除原来的header-search相关旧样式即可 */

.search-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s;
}

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

/* ==========================================================================
   Banner 区域 (Static Background)
   ========================================================================== */
.banner {
    position: relative;
    width: 100%;
    height: 850px; /* 增加高度 */
    overflow: hidden;
    margin-top: 80px; /* 导航栏高度 */
}

.banner-list {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.5s ease-in-out;
}

.banner-item {
    flex-shrink: 0;
    width: 100%;
    height: 100%;
    position: relative;
}

.banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover; /* 改回 cover 以铺满全屏，并在媒体查询中针对手机调整 */
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
}

/* 添加半透明遮罩增强文字可读性 */
.banner-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 2;
}

.banner-overlay-content {
    position: relative;
    z-index: 3;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
    max-width: 1600px;
    margin: 0 auto;
}

.banner-text-box {
    max-width: 1000px;
    padding: 0 20px;
    margin-top: -80px; /* 整体向上移动 */
    animation: fadeInUp 1s ease;
}

.main-title {
    font-size: clamp(30px, 6vw, 64px); /* 放大字号，原为 clamp(24px, 5vw, 50px) */
    font-weight: bold;
    margin-bottom: 20px;
    letter-spacing: 2px;
    line-height: 1.2;
    white-space: nowrap;
}

.sub-title {
    font-size: clamp(16px, 3vw, 28px); /* 进一步缩小手机端最小字号，确保不折行 */
    font-weight: 300;
    margin-bottom: 30px;
    letter-spacing: 1px; /* 减小字间距防止折行 */
    line-height: 1.2;
    color: #eee;
    white-space: nowrap; /* 强制不折行 */
}

.banner-btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 40px;
    background-color: rgba(255, 255, 255, 0.2); /* 调整为偏灰半透明背景以更贴近设计图 */
    border: none;
    color: #fff;
    font-size: 15px;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
    letter-spacing: 1px;
}

.banner-btn .btn-arrow {
    margin-left: 10px;
    transition: transform 0.3s ease;
}

.banner-btn:hover {
    background-color: rgba(255, 255, 255, 0.4);
}

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

/* 轮播图控制按钮 */
.arrow-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    cursor: pointer;
}

.arrow-btn img {
    height: 45px;
    /* transition: all 0.3s ease; 移除 transition 避免切换时的视觉干扰 */
}

.arrow-btn:hover {
    /* opacity: 1; 移除 opacity 变化 */
}

.left-arrow {
    left: 50px;
}

.right-arrow {
    right: 50px;
}

.dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s;
}

.dot.active {
    background-color: #ffffff;
    width: 30px;
    border-radius: 5px;
}

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

@media (max-width: 992px) {
    .main-title {
        font-size: 56px; /* 放大字号，原为 52px */
    }

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

    .banner {
        height: 80vh;
    }
}

@media (max-width: 768px) {
    .main-title {
        font-size: 28px;
        margin-bottom: 5px;
        line-height: 1.2;
    }

    .sub-title {
        font-size: 28px;
        margin-bottom: 10px;
        line-height: 1.2;
    }

    .desc-text {
        font-size: 13px;
        line-height: 1.6;
        margin-bottom: 20px;
    }

    .desc-text .divider {
        margin: 0 3px;
    }

    .mobile-break {
        display: block;
        height: 5px;
    }

    .pc-divider {
        display: none;
    }

    .banner {
        height: auto;
        min-height: 420px;
        padding: 60px 0;
    }

    .banner-btn {
        padding: 8px 25px;
        font-size: 14px;
    }

    /* 修正移动端 Banner 文字位置 */
    .banner-overlay-content {
        justify-content: center;
        text-align: center;
        padding-left: 0;
    }

    .banner-text-box {
        margin-top: 0; /* 移动端取消上移，使其垂直居中 */
        padding: 0 10px;
    }

    .main-title {
        font-size: clamp(22px, 5vw, 32px); /* 放大字号，原为 clamp(18px, 4vw, 30px) */
        margin-bottom: 10px;
    }

    .sub-title {
        font-size: clamp(12px, 2.5vw, 20px); /* 进一步缩小 */
        margin-bottom: 15px;
    }
    
    .banner-btn {
        padding: 8px 20px;
        font-size: 12px;
    }

    .dots {
        bottom: 8px;
    }

    /* 移动端箭头调整 */
    .arrow-btn img {
        height: 30px;
        /* 缩小箭头 */
    }

    .arrow-btn.left-arrow {
        left: 5px;
    }

    .arrow-btn.right-arrow {
        right: 5px;
    }
}

/* ==========================================================================
   核心产品 (Core Products)
   ========================================================================== */
.core-products {
    background-color: #ffffff;
}

.product-slider {
    position: relative;
    width: 100%;
    height: 550px;
    margin: 0 auto 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.prod-card {
    position: absolute;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: none;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    background: #777; /* 侧边卡片的灰色背景 */
    cursor: pointer;
    display: flex;
}

.prod-card .img-box {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.prod-card .img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6; /* 增加侧边图片的透明度，让其更可见但仍弱于主卡片 */
    transition: all 0.5s ease;
}

.prod-card .info-box-left {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    padding: 50px 40px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* 改为靠上对齐 */
    color: #fff;
    background: transparent;
}

.prod-card .info-box-left p {
    font-size: 18px;
    margin-bottom: 15px;
    font-weight: 300;
}

.prod-card .info-box-left h3 {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 30px;
    line-height: 1.4;
}

.btn-blue {
    display: inline-block;
    background-color: #4a7dff; /* 更明亮的蓝色，匹配设计图 */
    color: #ffffff;
    padding: 10px 30px;
    font-size: 14px;
    border-radius: 4px;
    align-self: flex-start;
    transition: background 0.3s;
    border: none;
    cursor: pointer;
}

.btn-blue:hover {
    background-color: #2762d1;
}

/* 侧边卡片 */
.prev-card {
    width: 600px;
    height: 380px;
    z-index: 2;
    transform: translateX(-650px);
    opacity: 0.8;
}

.next-card {
    width: 600px;
    height: 380px;
    z-index: 2;
    transform: translateX(650px);
    opacity: 0.8;
}

.hidden-card {
    width: 600px;
    height: 380px;
    z-index: 1;
    transform: translateX(0) scale(0.5);
    opacity: 0;
    pointer-events: none;
}

.prev-card .info-box-left,
.next-card .info-box-left {
    display: flex; /* 改为显示，原本是none */
    opacity: 1;
}

.prev-card .info-box-left h3,
.next-card .info-box-left h3 {
    font-size: 18px; /* 侧边标题字号稍微小一点 */
    margin-bottom: 20px;
}

.prev-card .info-box-left p,
.next-card .info-box-left p {
    font-size: 14px; /* 侧边副标题字号小一点 */
    margin-bottom: 10px;
}

.prev-card .btn-blue,
.next-card .btn-blue {
    display: inline-block; /* 侧边也显示按钮 */
    padding: 8px 20px;
    font-size: 12px;
}

/* 中间高亮卡片 */
.active-card {
    width: 900px;
    height: 500px;
    z-index: 3;
    transform: translateX(0);
    opacity: 1;
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
    background: #fff; /* 主卡片背景 */
}

.active-card .img-box img {
    opacity: 1;
}

/* 取消斜边，使其为正常矩形块，如果设计图是正常矩形 */
.active-card .info-box-left {
    background: transparent;
    width: 100%;
}

/* 滚动提示 */
.scroll-tips {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    margin-top: 20px;
}

.scroll-tips>img {
    height: 18px;
    /* 调小箭头图片 */
    cursor: pointer;
    /* 移除这里的 transition 和 transform: scale(1.2)，避免它和 JS 替换图片的行为冲突或造成误解 */
}

/* 移除悬停放大效果，因为现在已经通过 JS 替换图片来表现了 */
/* .scroll-tips > img:hover {
    transform: scale(1.2);
} */

.mouse-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: #999;
    font-size: 12px;
}

.mouse-icon img {
    height: 24px;
}

/* ==========================================================================
   发展历程 (Development History) - 视频背景与多图层合成版
   ========================================================================== */
.dev-history {
    position: relative;
    width: 100%;
    min-height: 800px;
    padding: 0;
    margin: 0;
    /* overflow: hidden; 移除此属性，允许 h 造型底部超出 */
    background-color: #1a1a1a;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* 视频背景容器 (用于限制视频不溢出区块) */
.video-bg-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

/* 视频背景层 */
.bg-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translateX(-50%) translateY(-50%);
    object-fit: cover;
    z-index: 1; /* 明确层级 */
}

/* 视频上层底纹 (ly2-top1.png) */
.video-pattern-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/ly2-top2.png'); /* 使用背景图铺满 */
    background-repeat: repeat; /* 根据需要可以选择 no-repeat 或 repeat */
    background-size: cover; /* 覆盖整个区域 */
    z-index: 2; /* 放在视频上面，遮罩下面 */
    pointer-events: none;
}

/* 半透明遮罩层 (让前景文字更清晰) */
.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4); /* 根据需要调整透明度 */
    z-index: 3; /* 放在底纹上面 */
    pointer-events: none;
}

/* 前景内容容器 */
.history-content-wrapper {
    position: relative;
    width: 100%; /* 从 1200px 改为 100%，让连线从屏幕边缘开始 */
    max-width: 1920px; /* 限制最大宽度，避免超宽屏幕变形过大 */
    height: 600px; /* 根据实际底纹高度调整 */
    margin-top: -60px; /* 调整负边距，让整个时间轴向上移动 */
    z-index: 5;
}

/* 曲线与播放按钮底纹 */
.timeline-curve {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: auto;
    z-index: 6;
}

/* 巨大的半透明 'h' 造型 */
.h-shape {
    position: absolute;
    top: 0; /* 顶部与背景区块顶部对齐 */
    left: 1%; /* 调整左侧位置，使其更贴合设计图 */
    width: auto; 
    height: 108%; /* 高度设置大于100%，使其下边超出区块一点 */
    opacity: 0.4; /* 提高透明度，使其更明显 */
    z-index: 4; /* 层级放到曲线和点下面 */
    pointer-events: none; /* 防止遮挡点击 */
}

/* 时间轴 SVG 平滑连线 */
.timeline-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 6; /* 放在 h 造型之上，节点之下 */
    pointer-events: none; /* 不阻挡节点点击 */
}

/* 播放按钮图片样式 */
.play-btn-icon {
    position: absolute;
    top: 5%; /* 根据设计图调整垂直位置，往上提 */
    left: 50%; /* 水平居中 */
    transform: translateX(-50%);
    width: 60px; /* 调整播放按钮大小 */
    height: auto;
    z-index: 8; /* 放在较高层级 */
    cursor: pointer; /* 增加点击手势 */
    transition: transform 0.3s ease;
    animation: pulsePlayBtn 2.5s infinite; /* 为播放按钮也添加发光缩放动态效果 */
}

/* 播放按钮呼吸缩放动画 */
@keyframes pulsePlayBtn {
    0% {
        transform: translateX(-50%) scale(1);
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4);
        border-radius: 50%;
    }
    50% {
        transform: translateX(-50%) scale(1.05);
        box-shadow: 0 0 20px 10px rgba(255, 255, 255, 0);
        border-radius: 50%;
    }
    100% {
        transform: translateX(-50%) scale(1);
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
        border-radius: 50%;
    }
}

.play-btn-icon:hover {
    animation: none; /* 悬停时停止动画 */
    transform: translateX(-50%) scale(1.15); /* 鼠标悬停放大更多 */
}

/* 时间轴节点容器 */
.timeline-points {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 8;
}

/* 单个节点 */
.point-item {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    transform: translate(-50%, -35px); /* 使 y=35px 处对齐白线 */
    animation: floatUpDown 3s ease-in-out infinite; /* 添加上下浮动动画 */
    z-index: 10; /* 明确 z-index */
    cursor: pointer;
    pointer-events: auto;
}

.point-item * {
    pointer-events: none; /* 让子元素不干扰点击事件 */
}

/* 为不同节点设置不同的动画延迟，使其错落有致 */
.point-item:nth-child(1) { animation-delay: 0s; }
.point-item:nth-child(2) { animation-delay: 0.6s; }
.point-item:nth-child(3) { animation-delay: 1.2s; }
.point-item:nth-child(4) { animation-delay: 1.8s; }
.point-item:nth-child(5) { animation-delay: 2.4s; }

/* 定义上下浮动动画关键帧 */
@keyframes floatUpDown {
    0%, 100% {
        transform: translate(-50%, -35px);
    }
    50% {
        transform: translate(-50%, -45px); /* 向上浮动 10px */
    }
}

/* 坐标点图标 */
.point-icon {
    width: 30px;
    height: 30px;
    margin-bottom: 15px;
    position: relative;
    z-index: 2;
    cursor: pointer;
    transition: transform 0.3s;
}

/* 节点上的小圆点 */
.point-dot {
    position: absolute;
    top: 28px;
    left: 50%;
    transform: translateX(-50%);
    width: 14px;
    height: auto;
    z-index: 1;
    animation: pulseGlow 2s infinite; /* 为小圆点添加呼吸发光效果 */
}

/* 小圆点呼吸发光动画 */
@keyframes pulseGlow {
    0% {
        transform: translateX(-50%) scale(1);
        opacity: 0.8;
    }
    50% {
        transform: translateX(-50%) scale(1.3);
        opacity: 1;
        filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.8));
    }
    100% {
        transform: translateX(-50%) scale(1);
        opacity: 0.8;
    }
}

.point-icon:hover {
    transform: scale(1.2);
}

/* 节点文字 */
.point-text {
    text-align: center;
    color: #fff;
    white-space: nowrap;
}

.point-text h4 {
    font-size: 16px;
    font-weight: 400;
    margin-bottom: 5px;
    color: #ddd;
}

.point-text p {
    font-size: 14px;
    color: #aaa;
}

/* ==========================================================================
   留言区 (Message Section)
   ========================================================================== */
.message-section {
    background-color: #f9f9f9;
    padding: 60px 0 80px;
}

.message-section .section-title .en-title {
    font-size: 32px;
    color: var(--primary-color);
    font-weight: bold;
    letter-spacing: 5px;
    margin: 0;
    text-transform: none;
}

.message-form-container {
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
}

.message-form .form-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    gap: 30px;
}

.message-form .form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.message-form .form-group label {
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
}

.message-form input[type="text"],
.message-form input[type="email"] {
    width: 100%;
    border: none;
    border-bottom: 1px solid #ccc;
    background: transparent;
    padding: 10px 0;
    font-size: 16px;
    color: #333;
    outline: none;
    transition: border-color 0.3s;
}

.message-form input:focus {
    border-bottom-color: var(--primary-color);
}

.message-form .form-row-full {
    display: flex;
    align-items: center;
    border-bottom: 1px solid #ccc;
    padding-bottom: 10px;
}

.message-form .message-input {
    flex: 1;
    border: none !important;
}

.submit-btn {
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    padding: 10px 40px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background-color: #083a7a;
}

.form-checkbox {
    justify-content: flex-start !important;
    align-items: center;
}

.form-checkbox label {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.form-checkbox input {
    margin-right: 10px;
}

.checkbox-text {
    font-size: 14px;
    color: #999;
}

.blue-link {
    color: var(--primary-color);
    text-decoration: none;
}

.blue-link:hover {
    text-decoration: underline;
}

/* ==========================================================================
   新闻动态 (News)
   ========================================================================== */
.news-section {
    padding-bottom: 60px;
    overflow: hidden;
    /* 隐藏超出屏幕的部分 */
}

.news-slider-wrap {
    width: 100%;
    overflow: hidden;
    margin-bottom: 40px;
    padding: 0 40px;
    /* 左右增加边距 */
    box-sizing: border-box;
}

.news-list {
    display: flex;
    gap: 30px;
    /* 卡片之间的间距 */
    transition: transform 0.5s ease-in-out;
    padding: 20px 0;
    /* 给上下阴影留出空间 */
    /* 初始居中偏移会在 JS 中计算 */
}

.news-item {
    background: #ffffff;
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
    /* 假设屏幕足够宽，我们动态计算宽度：calc((100% - 4个gap) / 5) */
    width: calc((100% - 120px) / 5);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.news-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.news-img {
    height: 180px; /* 移动端保持适中高度 */
    overflow: hidden;
}

@media (min-width: 1200px) {
    .news-img {
        height: 220px; /* PC端增加图片高度，解决高分辨率下过矮的问题 */
    }
}

@media (min-width: 1920px) {
    .news-img {
        height: 260px; /* 在超大屏幕下进一步提升高度，确保视觉比例协调 */
    }
}

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

.news-item:hover .news-img img {
    transform: scale(1.1);
}

.news-info {
    padding: 20px;
}

.news-info h3 {
    font-size: 15px;
    color: #333;
    line-height: 1.5;
    height: 45px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    margin-bottom: 20px;
}

.news-bot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #999;
    font-size: 13px;
    border-top: 1px solid #eee;
    padding-top: 15px;
}

/* ==========================================================================
   页脚 (Footer)
   ========================================================================== */
.footer {
    background-color: var(--primary-color);
    color: #fff;
    padding-top: 60px;
    overflow: visible; /* 确保内容不被裁剪 */
}

.footer-main {
    display: flex;
    justify-content: space-between;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-links {
    display: flex;
    gap: 80px;
}

.footer-links dl {
    margin: 0;
}

.footer-links dt {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 20px;
}

.footer-links dd {
    margin: 0 0 15px 0;
}

.footer-links dd a {
    color: #b0c4de;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-links dd a:hover {
    color: #fff;
}

.footer-contact {
    text-align: right;
    max-width: 300px;
}

.f-company {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
}

.f-desc {
    font-size: 14px;
    color: #b0c4de;
    line-height: 1.8;
    margin-bottom: 20px;
}

.f-qr-container {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
}

.f-qr {
    width: 100px;
    height: 100px;
    background: #fff;
    padding: 5px;
    cursor: pointer;
    transition: transform 0.3s;
}

.f-qr:hover {
    transform: scale(1.05);
}

.f-qr img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.footer-bottom-info {
    display: flex;
    align-items: center;
    padding: 25px 0;
    gap: 50px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.f-item {
    display: flex;
    align-items: center;
    font-size: 15px;
    color: #fff;
    opacity: 0.8;
}

.f-item img {
    width: 18px;
    height: 18px;
    margin-right: 12px;
}

.beian-info {
    margin-left: auto;
    font-size: 13px;
    opacity: 0.6;
}

.beian-info a {
    color: #fff;
}

.beian-info .divider {
    margin: 0 10px;
}

.beian-info a {
    color: #b0c4de;
    text-decoration: none;
    transition: color 0.3s;
}

.beian-info a:hover {
    color: #fff;
}

.beian-info .divider {
    margin: 0 15px;
    color: rgba(255, 255, 255, 0.3);
}

/* ==========================================================================
   二维码放大弹窗 (QR Modal) - 局部放大
   ========================================================================== */
.qr-modal {
    display: none; /* 默认隐藏 */
    position: fixed;
    z-index: 9999;
    /* 去除全屏背景和遮罩 */
    background-color: transparent;
    backdrop-filter: none;
    align-items: center;
    justify-content: center;
}

.qr-modal .modal-content {
    /* 限制放大的尺寸为一个合适的大小 */
    width: 250px;
    height: 250px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    border: 5px solid #fff;
    border-radius: 8px;
    animation: zoomIn 0.2s ease-out;
}

@keyframes zoomIn {
    from { transform: scale(0.5); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

/* 隐藏全屏的关闭按钮，改用点击外部关闭 */
.close-modal {
    display: none;
}

.footer-copy {
    display: none;
}

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

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

/* ==========================================================================
   响应式设计 (Responsive Design)
   ========================================================================== */
/* ==========================================================================
   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;
}

@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) {
    .product-slider {
        height: 55vw; /* 高度根据屏幕宽度自适应，保持卡片比例 */
        min-height: 200px;
    }

    .prod-card {
        width: 95%;
        height: 100% !important; /* 强制覆盖桌面端高度设置 */
        margin: 0 auto;
        position: relative;
        left: 0;
        transform: none;
        display: flex; /* 使用 flex 布局 */
        flex-direction: column;
        box-shadow: none; /* 手机版中去掉阴影 */
    }

    .active-card {
        box-shadow: none !important; /* 强制去除 active-card 上的阴影 */
    }

    /* 只显示 active-card，其余隐藏 */
    .prod-card:not(.active-card) {
        display: none;
    }

    .prod-card .info-box-left {
        padding: 6vw 4vw; /* 内边距根据屏幕大小自适应 */
        justify-content: flex-start; /* 文本靠上对齐，避免遮挡底部图片重点 */
        z-index: 2; /* 确保文字在图片之上 */
    }

    .prod-card .info-box-left h3 {
        font-size: clamp(16px, 5vw, 24px); /* 标题字号根据屏幕自适应 */
        margin-bottom: 2vw;
    }

    .prod-card .info-box-left p {
        font-size: clamp(12px, 3.5vw, 16px); /* 副标题字号根据屏幕自适应 */
        margin-bottom: 2vw;
    }

    .btn-blue {
        padding: 1.5vw 4vw;
        font-size: clamp(10px, 3vw, 14px);
    }

    .prod-card .img-box {
        position: absolute; /* 图片绝对定位铺满 */
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 1;
    }
    
    .prod-card .img-box img {
        width: 100%;
        height: 100%;
        object-fit: cover; /* 确保图片完整覆盖容器且不拉伸变形 */
    }

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

    /* 发展历程手机端 */
    .history-section {
        height: auto; /* 取消固定高度 */
        min-height: 80vh;
        padding: 40px 0;
    }

    .history-content-wrapper {
        height: auto; /* 取消固定高度 */
        margin-top: 20px; /* 调整边距 */
        display: flex;
        justify-content: center;
    }

    .timeline-points {
        position: relative; /* 改为相对定位 */
        height: auto;
        display: flex;
        flex-direction: column;
        align-items: flex-start; /* 靠左对齐 */
        padding-left: 0; /* 移除原来的百分比，使用固定距离方便对齐 */
        padding-right: 5%; /* 右侧留出空间防止文字贴边 */
        gap: 40px; /* 节点间距拉大 */
    }

    .timeline-svg {
        display: none; /* 隐藏原本的横向 SVG 连线 */
    }

    /* 手机端竖向连线 */
    .timeline-points::before {
        content: '';
        position: absolute;
        top: 20px;
        bottom: 20px;
        left: 40px; /* 将线固定在距离左边缘 40px 处 */
        transform: translateX(-50%); /* 让线的中心点对准 40px 的位置 */
        width: 2px;
        background: rgba(255, 255, 255, 0.5); /* 半透明白线 */
        z-index: 1;
    }

    .point-item {
        position: relative; /* 改为相对定位 */
        transform: none !important; /* 清除所有变换和浮动动画 */
        left: 0 !important;
        top: 0 !important;
        flex-direction: row; /* 横向排列图标和文字 */
        align-items: flex-start;
        width: 100%;
        animation: none !important; /* 取消浮动动画 */
        padding-left: 80px; /* 文字留出空间: 线在 40px 处，文字从 80px 开始 */
    }

    .point-icon-wrapper {
        position: absolute;
        left: 40px; /* 将图标包裹器的中心也固定在 40px 处，保证与连线绝对对齐 */
        transform: translateX(-50%);
        top: 0;
        z-index: 2;
    }

    .point-icon {
        margin-bottom: 0;
        margin-right: 0;
        position: relative; /* 改为相对定位，由 wrapper 控制位置 */
        left: 0;
        transform: none;
    }

    .point-dot {
        position: relative; /* 改为相对定位，由 wrapper 控制位置 */
        top: 0;
        left: 0;
        transform: none;
        margin-top: 5px; /* 让小圆点稍微往下靠一点，留出间隙 */
        display: block !important; /* 恢复显示发光小圆点 */
        z-index: 3; /* 确保小圆点在最上层 */
        width: 14px; /* 确保小圆点大小正确 */
        height: auto;
        animation: pulseGlowMobile 2s infinite !important; /* 覆盖原来的动画，去掉 translateX */
    }

    @keyframes pulseGlowMobile {
        0% {
            transform: scale(1);
            opacity: 0.8;
        }
        50% {
            transform: scale(1.3);
            opacity: 1;
            filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.8));
        }
        100% {
            transform: scale(1);
            opacity: 0.8;
        }
    }

    .point-text {
        text-align: left; /* 文字左对齐 */
        white-space: normal; /* 允许折行 */
        padding-left: 0; /* padding 移至 point-item */
    }

    .point-text h4 {
        font-size: 16px;
        margin-bottom: 5px;
    }

    .point-text p {
        font-size: 13px;
    }

    .play-btn-icon {
        top: 10%; /* 调整播放按钮位置 */
        width: 40px; /* 缩小播放按钮 */
    }

    .h-shape {
        display: none; /* 手机端隐藏巨大的 h 造型，避免杂乱 */
    }

    .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);
    }
}

/* ==========================================================================
   政策方针弹窗样式 (Policy Modal)
   ========================================================================== */
.policy-modal {
    display: none;
    position: fixed;
    z-index: 9999; /* 提高层级 */
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    justify-content: center;
    align-items: center;
    animation: modalFadeInBg 0.4s ease;
}

.policy-modal-content {
    background-color: #fff;
    padding: 50px 60px;
    border-radius: 16px;
    width: 90%;
    max-width: 850px;
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    animation: modalContentSlideIn 0.5s cubic-bezier(0.18, 0.89, 0.32, 1.28);
    max-height: 85vh;
    overflow-y: auto;
}

@keyframes modalFadeInBg {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

@keyframes modalContentSlideIn {
    0% { opacity: 0; transform: translateY(50px) scale(0.9); }
    100% { opacity: 1; transform: translateY(0) scale(1); }
}

.policy-modal-close {
    color: #999;
    position: absolute;
    right: 30px;
    top: 25px;
    font-size: 32px;
    font-weight: 300;
    cursor: pointer;
    transition: all 0.3s;
    line-height: 1;
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
}

.policy-modal-close:hover {
    color: var(--primary-color);
    background-color: #f0f4ff;
    transform: rotate(90deg);
}

.policy-modal-body h3 {
    color: var(--primary-color);
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #eee;
    line-height: 1.4;
    position: relative;
}

.policy-modal-body h3::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 80px;
    height: 2px;
    background-color: var(--primary-color);
}

.policy-modal-body p {
    font-size: 17px;
    line-height: 1.9;
    color: #444;
    margin-bottom: 25px;
    text-align: justify;
}

.policy-modal-body p:last-child {
    margin-bottom: 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .policy-modal-content {
        padding: 40px 25px;
        width: 92%;
    }
    .policy-modal-body h3 {
        font-size: 22px;
        margin-bottom: 20px;
    }
    .policy-modal-body p {
        font-size: 15px;
        line-height: 1.7;
    }
}

    /* 每行显示3个 */
}

@media (max-width: 768px) {
    .section-title {
        margin-bottom: 30px;
    }

    .section-title .en-title {
        font-size: 1.125rem; /* 手机端 18px 转换为 rem */
    }

    .section-title .cn-title {
        font-size: 2.0rem; /* 手机端改为 2.0rem */
    }

    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: 50vw; /* 改为根据视口宽度自适应高度，保持图片比例 */
        min-height: 250px; /* 设置一个最小高度 */
        max-height: 400px;
        padding: 0;
    }

    .banner-bg {
        background-size: cover; /* 手机端恢复为 cover 配合动态高度 */
        background-position: center; 
    }

    .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: 20px 5%; /* 调整间距，确保能放下三列 */
        justify-content: flex-start; /* 靠左对齐 */
    }

    .footer-links dl {
        width: 30%; /* 改为三列布局 */
        text-align: left; /* 文本居左对齐 */
    }

    .footer-contact {
        align-items: flex-start; /* 改为靠左对齐 */
        text-align: left; /* 文字靠左对齐 */
        max-width: 100%; /* 宽度撑满 */
        width: 100%;
    }

    .f-qr-container {
        justify-content: flex-start; /* 二维码靠左排列 */
        width: 100%;
    }

    .footer-bottom-info {
        flex-direction: row; /* 改为横向排列 */
        flex-wrap: wrap; /* 允许换行 */
        justify-content: center; /* 居中对齐 */
        gap: 15px;
        padding-bottom: 20px; /* 增加底部内边距，防止备案信息被裁切 */
    }

    .f-item {
        margin-bottom: 0; /* 移除可能存在的底部边距 */
    }

    .beian-info {
        display: flex !important;
        flex-direction: column;
        align-items: center;
        gap: 5px;
        width: 100% !important; /* 强制占据整行 */
        margin-top: 10px !important;
        margin-left: 0 !important; /* 强制覆盖自动左外边距 */
        opacity: 1 !important;
        visibility: visible !important;
        padding-bottom: 20px;
    }

    .beian-info .divider {
        display: none;
    }

    /* 留言区手机端适配 */
    .message-section {
        padding: 40px 0;
    }
    
    .footer {
        padding-bottom: 20px;
    }

    .message-form-container {
        width: 100%;
        padding: 0 5%;
        box-sizing: border-box;
    }

    .message-form .form-row {
        flex-direction: column; /* 手机端输入框垂直排列 */
        gap: 20px;
        margin-bottom: 20px;
    }

    .message-form .form-row-full {
        flex-direction: column;
        align-items: stretch;
        border-bottom: none; /* 移除原来的底部边框，因为要垂直排列了 */
        padding-bottom: 0;
    }

    .message-form .message-input {
        width: 100%;
        border-bottom: 1px solid #ccc !important; /* 给留言框重新加上底部边框 */
        margin-bottom: 20px;
        padding-bottom: 10px;
    }

    .submit-btn {
        width: 100%; /* 按钮占满宽度 */
        margin-top: 10px;
    }

    .form-checkbox {
        margin-top: 10px;
        margin-bottom: 0;
    }

    .form-checkbox label {
        align-items: flex-start;
    }

    .form-checkbox input[type="checkbox"] {
        margin-top: 4px; /* 让复选框与多行文字的第一行对齐 */
        margin-right: 10px;
    }
}

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

    .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 2%; /* 减小间距以适应小屏幕三列 */
        justify-content: flex-start; /* 靠左排列 */
    }

    .footer-links dl {
        width: 30%; /* 改为三列布局 */
        text-align: left; /* 文字居左 */
    }

    .footer-contact {
        max-width: 100%; /* 取消最大宽度限制 */
        width: 100%;
        text-align: left; /* 文字居左对齐 */
        align-items: flex-start; /* 交叉轴靠左对齐 */
        margin-top: 20px;
    }

    .f-qr-container {
        justify-content: flex-start; /* 二维码靠左对齐 */
        width: 100%;
    }

    .footer-bottom-info {
        flex-direction: row; /* 改为横向排列 */
        flex-wrap: wrap; /* 允许换行 */
        justify-content: center; /* 居中对齐 */
        gap: 15px;
        padding-bottom: 20px; /* 增加底部内边距 */
    }

    .footer-bottom-info .beian-info {
        display: flex !important;
        flex-direction: column;
        align-items: center;
        gap: 5px;
        width: 100% !important; /* 强制占据整行 */
        margin-top: 10px !important;
        margin-left: 0 !important; /* 强制覆盖自动左外边距 */
        opacity: 1 !important; /* 防止被意外透明 */
        visibility: visible !important; /* 防止被隐藏 */
        color: #fff !important; /* 强制白色，防止看不清 */
        padding-bottom: 30px; /* 增加底部空间 */
    }
}

/* ==========================================================================
   新闻列表页面样式
   ========================================================================== */

/* 新闻 Banner */
.news-banner {
    position: relative;
    width: 100%;
    height: 450px;
    overflow: hidden;
    margin-top: 80px;
}

.news-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;
}

.news-banner-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 2;
}

.news-banner-content {
    position: relative;
    z-index: 3;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    text-align: left;
    color: #fff;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.news-banner-title {
    font-size: clamp(24px, 5vw, 50px);
    font-weight: bold;
    margin-bottom: 30px;
    letter-spacing: 2px;
    line-height: 1.2;
    color: #ffffff;
    animation: fadeInUp 1s ease;
}

.news-banner-btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 40px;
    background-color: rgba(255, 255, 255, 0.2);
    border: none;
    color: #fff;
    font-size: 15px;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
    letter-spacing: 1px;
    animation: fadeInUp 1s ease 0.2s both;
}

.news-banner-btn .btn-arrow {
    margin-left: 10px;
    transition: transform 0.3s ease;
}

.news-banner-btn:hover {
    background-color: rgba(255, 255, 255, 0.4);
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 新闻列表区域 */
.news-list-section {
    padding: 40px 0 80px;
    background-color: #ffffff;
}

/* 栏目标题 */
.news-category-bar {
    background-color: #f5f5f5;
    padding: 40px 0;
}

.news-category-inner {
    max-width: 1600px;
    margin: 0 auto;
}

.category-name {
    font-size: 3rem;
    font-weight: bold;
    color: #0b459c;
    margin: 0;
    letter-spacing: 1px;
}

.news-list-container {
    max-width: 1600px;
    margin: 0 auto;
}

.news-list-item {
    display: flex;
    align-items: center;
    padding: 25px 0;
    border-bottom: 1px solid #e5e5e5;
    transition: all 0.3s ease;
}

.news-list-item:hover {
    background-color: #f9f9f9;
    margin: 0 -20px;
    padding: 25px 20px;
}

.news-list-img {
    flex-shrink: 0;
    width: 200px;
    height: 130px;
    margin-right: 25px;
    overflow: hidden;
    border-radius: 4px;
}

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

.news-list-item:hover .news-list-img img {
    transform: scale(1.1);
}

.news-list-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-list-date {
    font-size: 0.875rem;
    color: #888;
    margin-bottom: 8px;
    font-weight: 400;
}

.news-list-title {
    font-size: 1.9rem;
    color: #333;
    margin: 0 0 10px 0;
    font-weight: bold;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.news-list-item:hover .news-list-title {
    color: var(--primary-color);
}

.news-list-line {
    width: 30px;
    height: 2px;
    background-color: var(--primary-color);
    margin-top: 8px;
}

/* 无图新闻项 */
.news-list-item:not(:has(.news-list-img)) .news-list-content {
    justify-content: flex-start;
}

/* 分页 */
.news-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 60px;
}

.page-btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-width: 40px;
    height: 40px;
    padding: 0 15px;
    border: 1px solid #ddd;
    background-color: #fff;
    color: #666;
    font-size: 0.9375rem;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.page-btn:hover,
.page-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.page-btn.more {
    min-width: 80px;
}

/* 新闻列表页响应式 */
@media (max-width: 768px) {
    .news-banner {
        height: 40vh;
        min-height: 250px;
        margin-top: 60px;
    }

    .news-banner-title {
        font-size: clamp(20px, 4vw, 36px);
        margin-bottom: 20px;
    }

    .news-banner-btn {
        padding: 10px 30px;
        font-size: 14px;
    }

    .news-list-section {
        padding: 0 0 40px 0;
    }

    .news-category-bar {
        padding: 30px 0;
    }

    .category-name {
        font-size: 1.75rem;
    }

    .news-list-item {
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 0;
    }

    .news-list-item:hover {
        margin: 0;
        padding: 20px 0;
    }

    .news-list-img {
        width: 100%;
        height: 180px;
        margin-right: 0;
        margin-bottom: 15px;
    }

    .news-list-title {
        font-size: 1.125rem;
    }

    .news-pagination {
        flex-wrap: wrap;
        gap: 8px;
        margin-top: 40px;
    }

    .page-btn {
        min-width: 36px;
        height: 36px;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .news-banner {
        height: 35vh;
        min-height: 200px;
    }

    .news-banner-title {
        font-size: clamp(18px, 5vw, 28px);
    }

    .news-banner-btn {
        padding: 8px 25px;
        font-size: 13px;
    }

    .category-name {
        font-size: 1.9rem;
    }

    .news-list-title {
        font-size: 1.5rem;
    }

    .news-list-date {
        font-size: 0.75rem;
    }
}

/* ==========================================================
   新闻详情页样式
   ========================================================== */
.detail-category-nav {
    margin-bottom: 30px;
}
.detail-category-nav .breadcrumb-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}
.detail-category-nav .breadcrumb-list li {
    font-size: 1.4rem;
    color: #666;
    display: flex;
    align-items: center;
}
.detail-category-nav .breadcrumb-list li + li::before {
    content: ">";
    margin: 0 8px;
    color: #ccc;
    font-size: 0.8rem;
}
.detail-category-nav .breadcrumb-list a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s;
}
.detail-category-nav .breadcrumb-list a:hover {
    color: var(--primary-color, #0051a8);
}
.detail-category-nav .breadcrumb-list .current {
    color: #333;
}

.news-detail-page {
    padding: 120px 0 80px;
    max-width: 1600px;
    margin: 0 auto;
}
.detail-header {
    text-align: left;
    border-bottom: 1px solid #eee;
    padding-bottom: 30px;
    margin-bottom: 40px;
}
.detail-title {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 20px;
    line-height: 1.4;
    font-weight: bold;
    text-align: left;
}
.detail-meta {
    font-size: 1rem;
    color: #999;
    display: flex;
    justify-content: flex-start;
    gap: 30px;
}
.detail-content {
    font-size: 1.25rem;
    color: #444;
    line-height: 2;
}
.detail-content p {
    margin-bottom: 20px;
    text-indent: 2em;
}
.detail-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 30px auto;
    border-radius: 8px;
}

@media (max-width: 768px) {
    .news-detail-page {
        padding: 100px 15px 40px;
    }
    .detail-title {
        font-size: 1.8rem;
    }
    .detail-content {
        font-size: 1.1rem;
    }
    .detail-meta {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }
    .detail-content p {
        text-indent: 0; /* 手机端取消首行缩进，通常阅读体验更好 */
    }
}

/* ==========================================================================
   大屏幕适配 (Large Screen Adaptation)
   ========================================================================== */
@media (min-width: 1921px) {
    .wrapper,
    .header-inner,
    .banner-overlay-content,
    .message-form-container,
    .news-category-inner,
    .news-list-container,
    .news-detail-page,
    .history-content-wrapper {
        max-width: 1800px;
    }

    .prev-card {
        transform: translateX(-750px);
    }

    .next-card {
        transform: translateX(750px);
    }

    .active-card {
        width: 1000px;
    }

    .nav ul {
        gap: 100px;
    }
}

@media (min-width: 2560px) {
    .wrapper,
    .header-inner,
    .banner-overlay-content,
    .message-form-container,
    .news-category-inner,
    .news-list-container,
    .news-detail-page,
    .history-content-wrapper {
        max-width: 2200px;
    }

    .prev-card {
        transform: translateX(-950px);
        width: 700px;
        height: 440px;
    }

    .next-card {
        transform: translateX(950px);
        width: 700px;
        height: 440px;
    }

    .active-card {
        width: 1200px;
        height: 600px;
    }

    .product-slider {
        height: 650px;
    }

    .nav ul {
        gap: 130px;
    }
}