* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Helvetica Neue", Helvetica, Arial, "微软雅黑", sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: #333;
    background-color: #fff;
}

section {
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: #fff;
    padding: 0;
    margin: 0;
}

.welcome-bar {
    background-color: #e8e8e8;
    padding: 8px 0;
    border-bottom: 1px solid #d0d0d0;
}

.welcome-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.welcome-text {
    color: #666;
    font-size: 12px;
}

.welcome-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.welcome-email {
    color: #666;
    text-decoration: none;
    font-size: 12px;
}

.welcome-email:hover {
    color: #007bff;
}

.welcome-divider {
    color: #999;
    font-size: 12px;
}

.welcome-right a:not(.welcome-email) {
    color: #666;
    text-decoration: none;
    font-size: 12px;
}

.welcome-right a:not(.welcome-email):hover {
    color: #007bff;
}

.header-main {
    display: flex;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    height: 60px;
}

.logo-text h1 {
    font-size: 24px;
    color: #333;
    margin-bottom: 5px;
}

.logo-text p {
    font-size: 14px;
    color: #666;
}

nav {
    background-color: #2eb2ed;
    margin-top: 0;
    margin-bottom: 0;
    padding-bottom: 0;
}

nav .container {
    display: flex;
    justify-content: center;
}

nav .container a {
    position: relative;
    text-decoration: none;
    color: #fff;
    font-size: 16px;
    font-weight: 400;
    padding: 0 33px;
    line-height: 50px;
    display: block;
    text-align: center;
    transition: background-color 0.3s;
}

nav .container a:hover {
    background-color: #ff5500;
}

.category-phone {
    margin: 0;
    padding: 0;
    line-height: 0;
}

.category-phone img {
    width: 100%;
    height: auto;
    display: block;
}

.banner {
    position: relative;
    height: 550px;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

.banner .swiper-container {
    width: 100%;
    height: 100%;
}

.banner .swiper-slide {
    width: 100%;
    height: 100%;
}

.banner .swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner .swiper-pagination {
    bottom: 20px !important;
}

.banner .swiper-pagination-bullet {
    background: rgba(255, 255, 255, 0.5);
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.banner .swiper-pagination-bullet-active {
    background: #fff;
}

.banner .swiper-button-next,
.banner .swiper-button-prev {
    color: #fff;
}

.news-section {
    padding: 0;
    background-color: #f8f9fa;
    margin: 0;
}

.news-section .container {
    display: flex;
    align-items: center;
    gap: 20px;
}

.news-label {
    font-size: 16px;
    font-weight: 600;
    color: #2eb2ed;
    padding-right: 20px;
    border-right: 1px solid #ddd;
    white-space: nowrap;
}

.news-content {
    flex: 1;
    overflow: hidden;
}

.news-content #news-list {
    height: 42px;
    overflow: hidden;
}

.news-content .news-ticker {
    transition: transform 0.5s ease;
}

.news-content .news-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px dashed #ddd;
    height: 42px;
    box-sizing: border-box;
}

.news-content .news-item a {
    color: #333;
    text-decoration: none;
    font-size: 16px;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.news-content .news-item a:hover {
    color: #007bff;
}

.news-content .news-item .date {
    color: #999;
    font-size: 14px;
    margin-left: 20px;
}

.product-section {
    padding: 0;
    margin: 0;
}

.product-grid {
    display: grid;
    grid-template-columns: 265px 1fr;
    gap: 30px;
}

.product-categories {
    border-right: 1px solid #eee;
    padding-right: 0;
    position: relative;
    background: #fdfdfd;
}

.product-categories::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 7px;
    height: 100%;
    background: #ededed;
}

.product-categories h4 {
    font-size: 26px;
    color: #fff;
    margin: 0;
    padding: 20px 40px;
    background-color: #2eb2ed;
    font-weight: 700;
    font-family: "Microsoft YaHei";
    line-height: 1;
}

.product-categories h4::after {
    content: "PRODUCTS CENTER";
    display: block;
    font-size: 14px;
    font-family: Arial;
    margin-top: 10px;
    font-weight: normal;
    opacity: 0.9;
}

.product-categories ul {
    list-style: none;
    margin: 0;
    padding: 25px 0;
}

.product-categories li {
    position: relative;
    margin-bottom: 0;
}

.product-categories li a {
    display: flex;
    align-items: center;
    width: 100%;
    padding-left: 35px;
    line-height: 44px;
    font-size: 14px;
    color: #4e4e4e;
    font-weight: 400;
    text-decoration: none;
    transition: all 0.3s;
    border-left: 7px solid #ededed;
    padding-right: 15px;
}

.product-categories li a span {
    width: 100%;
    border-bottom: 1px solid #eee;
}

.product-categories li a:hover {
    color: #2eb2ed;
    border-left-color: #2eb2ed;
}

.product-main {padding:25px 0;
    display: flex;
    flex-direction: column;
}

.product-list-title {
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 2px solid #2eb2ed;
}

.product-list-title h3 {
    font-size: 20px;
    color: #333;
    font-weight: 600;
}

.product-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.product-item {
    text-align: center;
    padding: 15px;
    border: 1px solid #eee;
    transition: box-shadow 0.3s;
}

.product-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.product-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    margin-bottom: 15px;
}

.product-item h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
}

.product-item a {
    text-decoration: none;
    color: #333;
}

.product-item a:hover {
    color: #007bff;
}

footer {
    background-color: #1b1b1b;
    color: #fff;
    padding: 0;
}

footer > .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-top {
    display: flex;
    align-items: flex-start;
    padding: 40px 0;
}

.footer-logo {
    flex: 0 0 200px;
    margin-right: 30px;
    padding-top: 20px;
}

.footer-logo img {
    width: 100%;
    max-width: 180px;
    height: auto;
    display: block;
}

.footer-content {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    justify-items: stretch;
}

.footer-section {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-section h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: #fff;
    font-weight: 600;
    width: 100%;
    text-align: left;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
    line-height: 1.8;
}

.footer-section ul li a {
    color: #a9a9a9;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #fff;
}

.footer-contact-wrap {
    flex: 0 0 320px;
    margin-left: 30px;
    padding-left: 30px;
    border-left: 1px solid #333;
}

.footer-contact-wrap h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: #fff;
    font-weight: 600;
}

.footer-contact {
    color: #f2f2f2;
    font-size: 14px;
    line-height: 2.2;
}

.footer-contact a {
    color: #f2f2f2;
    text-decoration: none;
}

.footer-contact a:hover {
    color: #2eb2ed;
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid #333;
    background-color: #1b1b1b;
}

.footer-bottom p {
    color: #888;
    font-size: 13px;
    margin: 0;
}

.footer-bottom a {
    color: #888;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: #2eb2ed;
}

@media (max-width: 768px) {
    .header-main {
        flex-direction: column;
        gap: 20px;
    }

    nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }

    .banner {
        height: 250px;
    }

    .news-section .container {
        flex-direction: column;
        text-align: center;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }

    .product-categories {
        border-right: none;
        border-bottom: 1px solid #eee;
        padding-bottom: 20px;
        padding-right: 0;
    }

    .product-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-top {
        flex-direction: column;
    }

    .footer-logo {
        flex: none;
        margin: 0 0 20px 0;
        text-align: center;
        width: 100%;
    }

    .footer-contact-wrap {
        flex: none;
        width: 100%;
        margin: 20px 0 0 0;
        padding-left: 0;
        border-left: none;
        border-top: 1px solid #333;
        padding-top: 20px;
    }
}