@charset "UTF-8";
    /* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

:root {
    --primary: #165DFF;
    --secondary: #36CFC9;
    --accent: #FF7D00;
    --dark: #1D2129;
    --light: #F2F3F5;
    --white: #FFFFFF;
    --gray: #86909C;
}

body {
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

.client-container {
    width: 100%;
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 10px;
}

.section {
    padding: 50px 0;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1rem;
    color: var(--gray);
    text-align: center;
    max-width: 900px;
    margin: 0 auto 30px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background-color: #0E4CD1;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-secondary:hover {
    background-color: var(--light);
    transform: translateY(-2px);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    padding: 20px 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background-color: var(--white);
    padding: 12px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.navbar.scrolled .logo {
    color: var(--primary);
}

.logo-img {
    background-image: url("../images/logo-txt-b.png");
    background-size: cover;
    background-position: center;

    width: 170px;
    height: 50px;
    margin-right: 8px;
}

.navbar.scrolled .logo-img {
    background-image: url("../images/logo-txt.png");
    background-size: cover;
    background-position: center;
    width: 170px;
    height: 50px;
    margin-right: 8px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background-color: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    color: var(--white);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--white);
    font-weight: 500;
    font-size: 18px;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--secondary);
}

.nav-links a.active {
    color: var(--secondary);
}

.navbar.scrolled .nav-links a {
    color: var(--dark);
}

.navbar.scrolled .nav-links a:hover {
     color: var(--primary);
}
/* 选中状态：文字变色 + 底部线条 */
.navbar.scrolled .nav-links a.active {
    color: var(--primary);
}

.navbar.scrolled .nav-links a.active::after {
    content: '';
    position: absolute;
    left: 20px; /* 与a标签的padding-left对齐 */
    bottom: 0;
    width: calc(100% - 40px); /* 宽度 = 总宽度 - 左右padding */
    height: 2px; /* 底部线条高度 */
    color: var(--primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
}

.navbar.scrolled .mobile-menu-btn {
    color: var(--dark);
}

.mobile-menu-logo {
    background-image: url("../images/icon/bars.png");
    width: 22px;
    height: 22px;
    background-size: cover;
    background-position: center;
}

.navbar.scrolled .mobile-menu-logo {
    background-image: url("../images/icon/b-bars.png");
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background-color: var(--white);
    z-index: 1000;
    padding: 30px;
    transition: right 0.3s ease;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
}

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

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    position: absolute;
    top: 30px;
    right: 30px;
}

.mobile-nav-links {
    margin-top: 60px;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.mobile-nav-links a {
    font-size: 1.2rem;
    font-weight: 500;
}

/* 首页轮播 */
.hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
}

.carousel {
    height: 100%;
    position: relative;
}

.carousel-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
}

.carousel-item.active {
    opacity: 1;
}

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

.business-img {
    width: 60px;
    height: 60px;
}

.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.3));
}

.carousel-content {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    padding-left: 5%;
    max-width: 600px;
    color: var(--white);
}

.carousel-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.carousel-desc {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: 30px;
    opacity: 0.9;
}

.carousel-btns {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

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

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-dot.active {
    background-color: var(--white);
    width: 30px;
    border-radius: 6px;
}

/* 业务板块 */
.business {
    background-color: var(--light);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.business-card {
    background-color: var(--white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.business-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.business-icon {
    width: 60px;
    height: 60px;
    display: flex;
    margin-bottom: 20px;
}

.business-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.business-desc {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.6;
}

.business-link {
    color: var(--primary);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

/* 城市布局 */
.cities {
    background-color: var(--white);
}

.cities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.city-card {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.city-card:hover {
    transform: translateY(-5px);
}

.city-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.city-info {
    padding: 25px;
}

.city-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.city-title i {
    color: var(--primary);
}

.city-desc {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.6;
}

.city-contact {
    color: var(--gray);
    font-size: 0.9rem;
}

.city-contact p {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.city-contact i {
    color: var(--primary);
    width: 16px;
}

/* 客户轮播 */
.clients {
    background-color: var(--light);
    overflow: hidden;
}

.clients-container {
    position: relative;
    padding: 20px 0;
}

.client-carousel {
    transition: transform 0.5s ease;
}

.client-row {
    width: 100%;
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 20px 0;
}

.client-logo-container {
    height: 136px;
    width: 136px;
    border-radius: 100%;
    background: #FFFFFF;
    text-align: center;
    overflow: hidden;
    display: inline-block;
}

.client-logo {
    height: 94px;
    width: 94px;
    margin-top: 21px;
    margin-bottom: 21px;
    overflow: hidden;
    text-align: center;
    display: inline-block;
    vertical-align: top;
    line-height: 94px;
    justify-content: center; /* 水平居中 */
    align-items: center;     /* 垂直居中 */
    object-fit: contain; /* 保持图片比例 */
    transition: all 0.3s ease;
}

.client-logo:hover {
    transform: scale(1.05);
}
.lazy-image {
    background: #f0f0f0; /* 占位背景色 */
}
/* 关于我们 */
.about {
    background-color: var(--white);
}

.about-container {
    display: flex;
    flex-wrap: wrap;
    gap: 60px;
    align-items: center;
}

.about-img {
    flex: 1;
    min-width: 300px;
}

.about-img img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.about-content {
    flex: 1;
    min-width: 300px;
}

.about-subtitle {
    font-size: 1.25rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 15px;
}

.about-title {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 700;
    margin-bottom: 25px;
}

.about-desc {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
}

.about-feature i {
    color: var(--primary);
    background-color: rgba(22, 93, 255, 0.1);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 招聘 */
.careers {
    background-color: var(--light);
}

.careers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.career-card {
    background-color: var(--white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.career-card:hover {
    transform: translateY(-5px);
}

.career-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.career-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.career-type {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    background-color: rgba(22, 93, 255, 0.1);
    color: var(--primary);
}

.career-details {
    color: var(--gray);
    margin-bottom: 20px;
}

.career-details p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.career-details i {
    color: var(--primary);
    width: 16px;
}

.career-desc {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.6;
}

/* 联系我们 */
.contact {
    background-color: var(--white);
}

.contact-container {
    display: flex;
    flex-wrap: wrap;
    gap: 60px;
}

.contact-form {
    flex: 1;
    min-width: 300px;
    background-color: var(--light);
    border-radius: 12px;
    padding: 40px;
}

.contact-form h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 10px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border-radius: 8px;
    border: 1px solid #ddd;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.contact-info {
    flex: 1;
    min-width: 300px;
    background-color: var(--light);
    border-radius: 12px;
    padding: 40px;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 25px;
    margin-bottom: 10px;
}

.contact-item-qrcode {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    margin-bottom: 10px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: rgba(22, 93, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary);
    flex-shrink: 0;
}

.qrcode-icon {
    margin-left: 10px;
    width: 150px;
    height: 150px;
    object-fit: contain;
}
.contact-qrcode {
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-details h4 {
    font-weight: 600;
    margin-bottom: 5px;
}

.contact-details p {
    color: var(--gray);
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: rgba(22, 93, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: all 0.3s ease;
}

.bottom-icon {
    width: 40px;
    height: 40px;
}

.bottom-icon:hover {
    transform: scale(1.05);
}

/* 页脚 */
footer {
    background-color: var(--dark);
    color: var(--white);
    padding: 80px 0 40px;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.footer-col h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 25px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--secondary);
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .section {
        padding: 40px 0;
    }

    .carousel-content {
        padding: 0 5%;
    }

    .about-container, .contact-container {
        gap: 30px;
    }

    .contact-form, .contact-info {
        padding: 30px 20px;
    }

    .client-row {
        flex-wrap: wrap;
        gap: 10px;
    }
    .client-logo-container {
        height: 90px;
        width: 90px;
        border-radius: 100%;
        background: #FFFFFF;
        display: inline-block;
    }

    .client-logo {
        height: 56px;
        width: 56px;
        margin-top: 12px;
        margin-bottom: 12px;
        object-fit: contain; /* 保持图片比例 */
        overflow: hidden;
        text-align: center;
        display: inline-block;
        vertical-align: top;
        line-height: 56px;
    }

    .qrcode-icon {
        margin-left: 5px;
        width: 90px;
        height: 90px;
        object-fit: contain;
    }
}

@media (max-width: 480px) {
    .carousel-btns {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .footer-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1500px) {


    .client-row {
        flex-wrap: wrap;
        gap: 10px;
    }
    .client-logo-container {
        height: 110px;
        width: 110px;
        border-radius: 100%;
        background: #FFFFFF;
        display: inline-block;
    }

    .client-logo {
        height: 76px;
        width: 76px;
        margin-top: 17px;
        margin-bottom: 17px;
        object-fit: contain; /* 保持图片比例 */
        overflow: hidden;
        text-align: center;
        display: inline-block;
        vertical-align: top;
        line-height: 76px;
    }

    .qrcode-icon {
        margin-left: 8px;
        width: 120px;
        height: 120px;
        object-fit: contain;
    }
}