/* ========================================
 * 企业官网 - 主样式文件
 * 项目: FastAdmin + ThinkPHP 5
 * 设计: 参考 leanneed.com 专业科学仪器风格
 * ======================================== */

/* --- CSS变量 --- */
:root {
    /* 主色调 - 参考 leanneed 的专业蓝 */
    --primary:        #0271BD;
    --primary-dark:   #015A9A;
    --primary-light:  #3399D9;
    --primary-bg:     #EDF5FC;
    --primary-bg2:    #F2F8FD;

    /* 辅助色 */
    --accent:         #E8750A;
    --accent-dark:    #C56008;
    --accent-light:   #FFF0E0;
    --success:        #2E7D32;
    --warning:        #F9A825;

    /* 科技点缀 */
    --tech-cyan:      #0097A7;
    --tech-indigo:    #3949AB;
    --tech-glow:      rgba(2, 113, 189, 0.2);

    /* 中性色 */
    --text-primary:   #171717;
    --text-secondary: #555555;
    --text-light:     #999999;
    --text-muted:     #BBBBBB;
    --border-color:   #E8E8E8;
    --border-light:   #F0F0F0;
    --bg-white:       #FFFFFF;
    --bg-light:       #F9FAFC;
    --bg-gray:        #F3F4F6;
    --bg-dark:        #1C2838;
    --bg-darker:      #131C2B;
    --footer-text:    #8899AA;

    /* 间距 - 更大气 */
    --space-xs:  8px;
    --space-sm:  16px;
    --space-md:  24px;
    --space-lg:  48px;
    --space-xl:  90px;
    --space-xxl: 120px;
}

/* --- 基础重置 --- */
body {
    font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
                 STHeiti, "Microsoft Sans Serif", "WenQuanYi Micro Hei",
                 "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-primary);
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 容器扩宽 - 大气的基础 */
.container {
    max-width: 1400px;
}
@media (min-width: 1600px) {
    .container {
        max-width: 1520px;
    }
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.5s ease;
}
a:hover, a:focus {
    color: var(--primary-dark);
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* --- 字体层级 --- */
h1, .h1 { font-size: 38px; font-weight: 700; line-height: 1.3; color: var(--text-primary); }
h2, .h2 { font-size: 30px; font-weight: 700; line-height: 1.35; color: var(--text-primary); }
h3, .h3 { font-size: 20px; font-weight: 600; line-height: 1.4; color: var(--text-primary); }
h4, .h4 { font-size: 17px; font-weight: 600; line-height: 1.5; color: var(--text-primary); }
h5, .h5 { font-size: 15px; font-weight: 600; line-height: 1.6; color: var(--text-primary); }

/* --- 区块通用 --- */
.section {
    padding: var(--space-xl) 0;
}
.section--light {
    background-color: var(--bg-light);
}
.section--white {
    background: var(--bg-white);
}

/* 区块标题 - 大气居中 */
.section-title {
    text-align: center;
    margin-bottom: 56px;
}
.section-title h2 {
    position: relative;
    display: inline-block;
    margin-bottom: 12px;
    font-size: 34px;
    font-weight: 700;
    color: var(--text-primary);
    padding-bottom: 18px;
}
.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 56px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}
.section-title p {
    font-size: 16px;
    color: var(--text-light);
    max-width: 620px;
    margin: 12px auto 0;
    line-height: 1.7;
}
.section-title .title-line {
    display: none;
}

/* ========================================
 * 导航栏 - 固定白底，不随滚动变化
 * ======================================== */
.ent-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 72px;
    background: rgba(255, 255, 255, 0.97);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    box-shadow: 0 1px 6px rgba(0,0,0,0.04);
}

.ent-nav__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}
@media (min-width: 1600px) {
    .ent-nav__inner {
        max-width: 1520px;
    }
}

.ent-nav__logo {
    display: flex;
    align-items: center;
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    transition: color 0.5s ease;
}
.ent-nav__logo img {
    height: 44px;
    margin-right: 12px;
}

.ent-nav__menu {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.ent-nav__item {
    margin-left: 6px;
}
.ent-nav__link {
    display: block;
    padding: 8px 18px;
    font-size: 16px;
    color: var(--text-primary);
    position: relative;
    transition: color 0.5s ease;
    white-space: nowrap;
}
.ent-nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.5s ease;
    transform: translateX(-50%);
}
.ent-nav__link:hover,
.ent-nav__link.active {
    color: var(--primary);
}
.ent-nav__link:hover::after,
.ent-nav__link.active::after {
    width: 60%;
}

/* 导航右侧电话 */
.ent-nav__phone {
    font-size: 14px;
    color: var(--primary);
    white-space: nowrap;
}
.ent-nav__phone i {
    margin-right: 4px;
}

/* 下拉箭头 */
.ent-nav__arrow {
    font-size: 13px;
    margin-left: 4px;
    transition: transform 0.5s ease;
}

/* --- 下拉菜单系统 --- */
.ent-nav__item--has-dropdown {
    position: relative;
}

/* 通用下拉菜单容器 */
.ent-nav__dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    background: var(--bg-white);
    border-radius: 8px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    -webkit-box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    padding: 12px 0;
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(10px);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
    border-top: 3px solid var(--primary);
}

/* hover时显示下拉菜单 */
.ent-nav__item--has-dropdown:hover > .ent-nav__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* hover时箭头旋转 */
.ent-nav__item--has-dropdown:hover > .ent-nav__link .ent-nav__arrow {
    transform: rotate(180deg);
}

/* 通用下拉菜单项 */
.ent-nav__dropdown-item {
    display: block;
    padding: 10px 24px;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.5s ease;
    white-space: nowrap;
    position: relative;
}
.ent-nav__dropdown-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary);
    opacity: 0;
    transition: opacity 0.5s ease;
}
.ent-nav__dropdown-item:hover {
    color: var(--primary);
    background: var(--primary-bg);
    padding-left: 30px;
}
.ent-nav__dropdown-item:hover::before {
    opacity: 1;
}

/* --- 产品中心 Mega Menu --- */
.ent-nav__mega {
    width: 720px;
    left: 50%;
    display: flex;
    padding: 20px 0;
    border-top: 3px solid var(--primary);
}

/* 左侧分类列表 */
.ent-nav__mega-left {
    flex: 0 0 180px;
    border-right: 1px solid var(--border-color);
    padding-right: 8px;
}
.ent-nav__mega-cate {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.5s ease;
    border-radius: 4px;
    margin: 0 8px 0 12px;
}
.ent-nav__mega-cate:hover {
    color: var(--primary);
    background: var(--primary-bg);
    padding-left: 26px;
}

/* 右侧产品图标网格 */
.ent-nav__mega-right {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    padding: 4px 16px 4px 20px;
}
.ent-nav__mega-product {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 8px;
    border-radius: 8px;
    transition: all 0.5s ease;
    text-decoration: none;
}
.ent-nav__mega-product:hover {
    background: var(--primary-bg);
}
.ent-nav__mega-product i {
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 8px;
    transition: transform 0.5s ease;
}
.ent-nav__mega-product:hover i {
    transform: scale(1.15);
}
.ent-nav__mega-product span {
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
}
.ent-nav__mega-product:hover span {
    color: var(--primary);
}

/* 汉堡菜单按钮 - 桌面端隐藏 */
.ent-hamburger {
    display: none;
    position: relative;
    float: right;
    padding: 9px 10px;
    margin-top: 8px;
    margin-right: 15px;
    margin-bottom: 8px;
    background-color: transparent;
    background-image: none;
    border: 1px solid transparent;
    border-radius: 4px;
    cursor: pointer;
}
.ent-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    border-radius: 1px;
    background: var(--text-primary);
    transition: background 0.3s ease;
}
.ent-hamburger span + span {
    margin-top: 4px;
}

/* 移动端侧滑遮罩 */
.nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
}
.nav-overlay.show {
    display: block !important;
}

/* 移动端菜单打开时锁定body */
body.menu-open {
    overflow: hidden !important;
    position: fixed;
    width: 100%;
}

/* ========================================
 * Banner轮播区
 * ======================================== */
.ent-banner {
    position: relative;
    width: 100%;
    min-height: 680px;
    overflow: hidden;
    margin-top: 72px;
}
.ent-banner .swiper-slide {
    position: relative;
    height: 680px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
.ent-banner .swiper-slide::before {
    /* 蒙层暂时去掉
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 1;
    background: linear-gradient(180deg,
        rgba(10,30,55,0.65) 0%,
        rgba(18,60,110,0.4) 50%,
        rgba(30,50,70,0.6) 100%);
    */
}
.ent-banner__content {
    position: relative;
    z-index: 2;
    color: #fff;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding-top: 220px;
}
.ent-banner__title {
    font-size: 46px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
    color: #fff;
    letter-spacing: 3px;
    text-shadow: 0 2px 16px rgba(0,0,0,0.3);
}
.ent-banner__subtitle {
    font-size: 18px;
    line-height: 1.9;
    margin-bottom: 42px;
    opacity: 0.85;
    font-weight: 300;
    letter-spacing: 1px;
}
.ent-banner__btn {
    display: inline-block;
    padding: 13px 48px;
    background: var(--accent);
    color: #fff;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.5s ease;
    letter-spacing: 1px;
}
.ent-banner__btn:hover {
    background: var(--accent-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(232,117,10,0.35);
}

/* Swiper分页 */
.ent-banner .swiper-pagination-bullet {
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.45);
    opacity: 1;
    transition: all 0.5s ease;
}
.ent-banner .swiper-pagination-bullet-active {
    background: #fff;
    width: 26px;
    border-radius: 5px;
}

/* Banner底部分类入口 - 卡片上浮式 */
.ent-banner-cates {
    position: relative;
    z-index: 10;
    margin-top: -56px;
    padding: 0 20px;
}
.ent-banner-cates__inner {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
@media (min-width: 1600px) {
    .ent-banner-cates__inner {
        max-width: 1520px;
    }
}
.ent-banner-cate {
    background: #fff;
    border-radius: 6px;
    padding: 32px 24px 26px;
    text-align: center;
    box-shadow: 0 2px 18px rgba(0,0,0,0.06);
    transition: all 0.5s ease;
    cursor: pointer;
}
.ent-banner-cate:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}
.ent-banner-cate__icon {
    width: 62px;
    height: 62px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-bg);
    border-radius: 50%;
    color: var(--primary);
    font-size: 26px;
    transition: all 0.5s ease;
}
.ent-banner-cate:hover .ent-banner-cate__icon {
    background: var(--primary);
    color: #fff;
    transform: scale(1.1);
}
.ent-banner-cate__name {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
}

/* ========================================
 * 产品中心区块
 * ======================================== */
/* 分类图标网格 */
.ent-products-cates {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 52px;
}
.ent-products-cate {
    text-align: center;
    padding: 28px 12px;
    border-radius: 6px;
    transition: all 0.5s ease;
    cursor: pointer;
    border: 1px solid transparent;
}
.ent-products-cate:hover {
    background: #fff;
    border-color: var(--border-color);
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
    transform: translateY(-3px);
}
.ent-products-cate__icon {
    width: 76px;
    height: 76px;
    margin: 0 auto 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--primary-bg);
    color: var(--primary);
    font-size: 30px;
    transition: all 0.5s ease;
}
.ent-products-cate:hover .ent-products-cate__icon {
    background: var(--primary);
    color: #fff;
}
.ent-products-cate__name {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.5s ease;
}
.ent-products-cate:hover .ent-products-cate__name {
    color: var(--primary);
}

/* 产品卡片 */
.ent-product-card {
    display: block;
    background: var(--bg-white);
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: all 0.5s ease;
    position: relative;
}
.ent-product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 36px rgba(2,113,189,0.12);
    border-color: transparent;
}
.ent-product-card__img {
    position: relative;
    width: 100%;
    height: 240px;
    overflow: hidden;
    background: var(--bg-light);
}
.ent-product-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.ent-product-card:hover .ent-product-card__img img {
    transform: scale(1.1);
}
.ent-product-card__hot {
    position: absolute;
    top: 0;
    left: 0;
    background: var(--accent);
    color: #fff;
    padding: 4px 16px;
    font-size: 12px;
    font-weight: 500;
}
.ent-product-card__info {
    padding: 20px 16px;
    text-align: center;
    background: #fff;
}
.ent-product-card__name {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color 0.5s ease;
}
.ent-product-card:hover .ent-product-card__name {
    color: var(--primary);
}
.ent-product-card__subtitle {
    font-size: 13px;
    color: var(--text-light);
}

/* 产品列表 flex 对齐 */
.ent-product-list {
    display: flex;
    flex-wrap: wrap;
}
.ent-product-list > [class*="col-"] {
    display: flex;
    margin-bottom: 24px;
}
.ent-product-list .ent-product-card {
    width: 100%;
    display: flex;
    flex-direction: column;
}
.ent-product-list .ent-product-card__info {
    flex: 1;
}

/* ========================================
 * 关于我们区块
 * ======================================== */
.ent-about-home {
    display: flex;
    align-items: center;
    gap: 80px;
}
.ent-about-home__img {
    flex: 0 0 520px;
    position: relative;
    border-radius: 4px;
    overflow: visible;
}
.ent-about-home__img img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    border-radius: 4px;
}
.ent-about-home__img::after {
    content: '';
    position: absolute;
    bottom: -14px;
    right: -14px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--primary-bg);
    border-radius: 4px;
    z-index: -1;
}
.ent-about-home__text h3 {
    font-size: 26px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}
.ent-about-home__text p {
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.7;
    font-size: 15px;
}
.ent-about-home__btn {
    display: inline-block;
    /*margin-top: 15px;*/
    /*padding: 11px 32px;*/
    border: 1px solid var(--primary);
    color: var(--primary);
    border-radius: 5px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.5s ease;
}
.ent-about-home__btn:hover {
    background: var(--primary);
    color: #fff;
}

/* ========================================
 * 解决方案区块
 * ======================================== */
.ent-solution-card {
    display: block;
    background: var(--bg-white);
    border-radius: 6px;
    padding: 36px 28px;
    text-align: center;
    border: 1px solid var(--border-light);
    transition: all 0.5s ease;
    position: relative;
}
.ent-solution-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 36px rgba(2,113,189,0.12);
    border-color: transparent;
}
.ent-solution-card__icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-bg);
    border-radius: 50%;
    color: var(--primary);
    font-size: 28px;
    transition: all 0.5s ease;
}
.ent-solution-card:hover .ent-solution-card__icon {
    background: var(--primary);
    color: #fff;
}
.ent-solution-card__title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
    transition: color 0.5s ease;
}
.ent-solution-card:hover .ent-solution-card__title {
    color: var(--primary);
}
.ent-solution-card__desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ========================================
 * 新闻资讯区块
 * ======================================== */
.ent-news-tab {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 36px;
    border-bottom: 1px solid var(--border-light);
}
.ent-news-tab__item {
    font-size: 16px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 12px 28px;
    position: relative;
    transition: color 0.5s ease;
    font-weight: 500;
}
.ent-news-tab__item::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transition: transform 0.5s ease;
}
.ent-news-tab__item:hover,
.ent-news-tab__item.active {
    color: var(--primary);
}
.ent-news-tab__item:hover::after,
.ent-news-tab__item.active::after {
    transform: scaleX(1);
}

/* 新闻头条 */
.ent-news-featured {
    display: block;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
    height: 100%;
    min-height: 320px;
}
.ent-news-featured img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 320px;
    transition: transform 0.6s ease;
}
.ent-news-featured:hover img {
    transform: scale(1.08);
}
.ent-news-featured__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 32px 24px 24px;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    color: #fff;
}
.ent-news-featured__title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.5;
}
.ent-news-featured__date {
    font-size: 13px;
    opacity: 0.75;
}

/* 新闻列表项 */
.ent-news-item {
    display: flex;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px dashed var(--border-light);
    transition: all 0.5s ease;
}
.ent-news-item:last-child {
    border-bottom: none;
}
.ent-news-item:hover {
    padding-left: 12px;
}
.ent-news-item:hover .ent-news-item__title {
    color: var(--primary);
}
.ent-news-item__date {
    flex: 0 0 60px;
    font-size: 14px;
    color: var(--text-muted);
    text-align: center;
    line-height: 1.3;
}
.ent-news-item__title {
    font-size: 15px;
    color: var(--text-primary);
    transition: color 0.5s ease;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ========================================
 * 客户案例区块
 * ======================================== */
.ent-case-card {
    display: block;
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.5s ease;
}
.ent-case-card img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.ent-case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 36px rgba(0,0,0,0.14);
}
.ent-case-card:hover img {
    transform: scale(1.1);
}
.ent-case-card__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
    color: #fff;
    z-index: 2;
}
.ent-case-card__title {
    font-size: 15px;
    font-weight: 500;
}

/* 去掉重复的 .ent-case-card__overlay */
.ent-case-card__overlay + .ent-case-card__overlay {
    display: none;
}

/* ========================================
 * 页脚 Footer
 * ======================================== */
.ent-footer {
    background: #1C2838;
    color: var(--footer-text);
    padding: 64px 0 0;
}
.ent-footer__main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
}
.ent-footer__title {
    font-size: 16px;
    font-weight: 600;
    color: #DDE4ED;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.ent-footer__about p {
    font-size: 14px;
    line-height: 1.9;
    margin-bottom: 20px;
}
.ent-footer__contact-item {
    font-size: 14px;
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.ent-footer__contact-item i {
    margin-top: 4px;
    color: var(--primary-light);
}
.ent-footer__link-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.ent-footer__link-item {
    margin-bottom: 12px;
}
.ent-footer__link-item a {
    font-size: 14px;
    color: var(--footer-text);
    transition: color 0.5s ease;
}
.ent-footer__link-item a:hover {
    color: #fff;
}
.ent-footer__qr {
    text-align: center;
}
.ent-footer__qr img {
    width: 110px;
    height: 110px;
    border-radius: 4px;
    background: #fff;
    padding: 4px;
}
.ent-footer__qr p {
    font-size: 13px;
    margin-top: 10px;
}

/* 页脚底部 */
.ent-footer__bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: var(--footer-text);
}
.ent-footer__bottom a {
    color: var(--footer-text);
}
.ent-footer__bottom a:hover {
    color: #fff;
}

/* ========================================
 * 通用按钮 - 精致的矩形风格
 * ======================================== */
.btn-primary-ent {
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 5px;
    padding: 10px 30px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.5s ease;
}
.btn-primary-ent:hover {
    background: var(--primary-dark);
    color: #fff;
}
.btn-outline-ent {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: 5px;
    padding: 10px 30px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.5s ease;
}
.btn-outline-ent:hover {
    background: var(--primary);
    color: #fff;
}
.btn-accent-ent {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 5px;
    padding: 11px 32px;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.5s ease;
}
.btn-accent-ent:hover {
    background: var(--accent-dark);
    color: #fff;
}

/* ========================================
 * 面包屑
 * ======================================== */
.ent-breadcrumb {
    padding: 18px 0;
    background: var(--bg-light);
    margin-top: 72px;
    font-size: 14px;
}
.ent-breadcrumb a {
    color: var(--text-secondary);
}
.ent-breadcrumb a:hover {
    color: var(--primary);
}
.ent-breadcrumb .separator {
    margin: 0 10px;
    color: var(--text-light);
}
.ent-breadcrumb .current {
    color: var(--primary);
}

/* ========================================
 * 页面标题横幅 (内页)
 * ======================================== */
.ent-page-banner {
    margin-top: 72px;
    padding: 64px 0;
    background: linear-gradient(135deg, #015A9A, #0271BD);
    color: #fff;
    text-align: center;
}
.ent-page-banner h1 {
    color: #fff;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: 2px;
}
.ent-page-banner p {
    font-size: 16px;
    opacity: 0.85;
}

/* ========================================
 * 侧边栏 (子页面通用)
 * ======================================== */
.ent-sidebar {
    margin-bottom: 24px;
}
.ent-sidebar__title {
    font-size: 20px;
    font-weight: 700;
    color: var(--bg-white);
    background: var(--primary);
    padding: 16px 24px;
    border-radius: 5px 5px 0 0;
}
.ent-sidebar__list {
    list-style: none;
    padding: 0;
    margin: 0;
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 5px 5px;
}
.ent-sidebar__item a {
    display: block;
    padding: 14px 24px;
    font-size: 15px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.5s ease;
}
.ent-sidebar__item:last-child a {
    border-bottom: none;
}
.ent-sidebar__item a:hover,
.ent-sidebar__item a.active {
    color: var(--primary);
    background: var(--primary-bg);
    padding-left: 30px;
}

/* ========================================
 * 分页
 * ======================================== */
.ent-pagination {
    text-align: center;
    padding: 40px 0;
}
.ent-pagination a,
.ent-pagination span {
    display: inline-block;
    min-width: 40px;
    height: 40px;
    line-height: 40px;
    padding: 0 12px;
    margin: 0 5px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 15px;
    color: var(--text-secondary);
    transition: all 0.5s ease;
}
.ent-pagination a:hover {
    color: var(--primary);
    border-color: var(--primary);
}
.ent-pagination .active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ========================================
 * 联系表单
 * ======================================== */
.ent-contact-form .form-group {
    margin-bottom: 24px;
}
.ent-contact-form .form-control {
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 12px 16px;
    font-size: 15px;
    height: auto;
    transition: border-color 0.5s ease;
}
.ent-contact-form .form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(2, 113, 189, 0.1);
}
.ent-contact-form textarea.form-control {
    min-height: 140px;
    resize: vertical;
}

/* ========================================
 * 返回顶部
 * ======================================== */
.ent-back-top {
    position: fixed;
    right: 24px;
    bottom: 90px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 999;
    box-shadow: 0 2px 12px rgba(2, 113, 189, 0.3);
    -webkit-box-shadow: 0 2px 12px rgba(2, 113, 189, 0.3);
    transition: all 0.5s ease;
    opacity: 0;
}
.ent-back-top.show {
    display: flex;
    opacity: 1;
}
.ent-back-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* ========================================
 * 移动端底部操作栏
 * ======================================== */
.ent-mobile-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    -webkit-box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 999;
    padding: 6px 0;
    padding-bottom: calc(6px + env(safe-area-inset-bottom));
}
.ent-mobile-bar__inner {
    display: flex;
    align-items: center;
    justify-content: space-around;
}
.ent-mobile-bar__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 10px;
    color: var(--text-secondary);
    padding: 4px 12px;
    min-height: 44px;
    justify-content: center;
}
.ent-mobile-bar__item i {
    font-size: 20px;
    margin-bottom: 2px;
}
.ent-mobile-bar__item--phone {
    background: var(--primary);
    color: #fff !important;
    border-radius: 20px;
    padding: 6px 24px;
    flex-direction: row;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
}
.ent-mobile-bar__item--phone i {
    font-size: 16px;
    margin-bottom: 0;
}

/* ========================================
 * 产品详情页
 * ======================================== */
.ent-product-detail__gallery {
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 16px;
}
.ent-product-detail__gallery img {
    width: 100%;
    height: auto;
}
.ent-product-detail__thumbs {
    display: flex;
    gap: 10px;
}
.ent-product-detail__thumbs img {
    width: 80px;
    height: auto;
    border-radius: 5px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color 0.5s ease;
}
.ent-product-detail__thumbs img:hover,
.ent-product-detail__thumbs img.active {
    border-color: var(--primary);
}
.ent-product-detail__info h1 {
    font-size: 28px;
    margin-bottom: 10px;
}
.ent-product-detail__info .subtitle {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 28px;
}
.ent-product-detail__params {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 28px;
}
.ent-product-detail__params th,
.ent-product-detail__params td {
    padding: 12px 18px;
    border: 1px solid var(--border-color);
    font-size: 15px;
    text-align: left;
}
.ent-product-detail__params th {
    background: var(--bg-light);
    color: var(--text-secondary);
    width: 150px;
    font-weight: 500;
}
.ent-product-detail__content {
    line-height: 2;
    color: var(--text-secondary);
    font-size: 15px;
}
.ent-product-detail__content img {
    max-width: 100%;
    border-radius: 5px;
    margin: 14px 0;
}

/* ========================================
 * 新闻详情页
 * ======================================== */
.ent-news-detail__title {
    font-size: 28px;
    margin-bottom: 18px;
}
.ent-news-detail__meta {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 28px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border-color);
}
.ent-news-detail__content {
    line-height: 2;
    color: var(--text-secondary);
    font-size: 15px;
}
.ent-news-detail__content img {
    max-width: 100%;
    border-radius: 5px;
    margin: 14px 0;
}

/* ========================================
 * 内容区间距(内页)
 * ======================================== */
.page-content {
    padding: 56px 0;
}
.page-content .content-area {
    min-height: 400px;
}
.page-content .content-area img {
    max-width: 100%;
    border-radius: 5px;
}

/* ========================================
 * 友情链接
 * ======================================== */
.ent-friend-links {
    padding: 24px 0;
    background: var(--bg-gray);
    text-align: center;
    border-top: 1px solid var(--border-light);
}
.ent-friend-links__title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 12px;
}
.ent-friend-links__list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}
.ent-friend-links__list a {
    font-size: 13px;
    color: var(--text-muted);
}
.ent-friend-links__list a:hover {
    color: var(--primary);
}

/* ========================================
 * 留言成功提示
 * ======================================== */
.ent-alert {
    padding: 14px 22px;
    border-radius: 5px;
    margin-bottom: 24px;
    font-size: 15px;
}
.ent-alert--success {
    background: #E8F5E9;
    color: var(--success);
    border: 1px solid #C8E6C9;
}
.ent-alert--error {
    background: #FFEBEE;
    color: #C62828;
    border: 1px solid #FFCDD2;
}