/* 全局样式 */
:root {
    --primary-color: #3358FF; /* 主色调：蓝色 */
    --secondary-color: #6F42C1; /* 辅助色：紫色 */
    --accent-color: #00C9A7; /* 强调色：青绿色 */
    --dark-color: #1E2A4A; /* 深色背景 */
    --light-color: #F8F9FC; /* 浅色背景 */
    --text-color: #343A40; /* 主文本颜色 */
    --light-text: #6C757D; /* 浅色文本 */
    --white: #FFFFFF;
    --box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --border-radius: 8px;
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: var(--accent-color);
    margin: 15px auto 0;
}

.section-header p {
    color: var(--light-text);
    font-size: 1.1rem;
}

/* 按钮样式 */
.primary-btn, .secondary-btn, .solution-btn, .submit-btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
}

.primary-btn {
    background: var(--gradient);
    color: var(--white);
    border: none;
    box-shadow: 0 4px 15px rgba(51, 88, 255, 0.35);
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(51, 88, 255, 0.5);
}

.secondary-btn {
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.secondary-btn:hover {
    background: rgba(51, 88, 255, 0.1);
}

.solution-btn {
    background: var(--white);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    font-size: 0.9rem;
}

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

.submit-btn {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    width: 100%;
    font-size: 1rem;
}

.submit-btn:hover {
    background: var(--secondary-color);
}

/* 导航栏 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    max-width: 1400px;
    margin: 0 auto;
}

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

.logo-img {
    width: 40px;
    height: 40px;
    margin-right: 10px;
    transition: var(--transition);
}

.logo h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-right: 5px;
}

.logo span {
    color: var(--secondary-color);
    font-size: 1rem;
}

.nav-links {
    display: flex;
}

.nav-links li {
    margin: 0 15px;
}

.nav-links a {
    position: relative;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

.nav-links a:hover:after {
    width: 100%;
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 主页封面 */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 140px 5% 80px;
    background: linear-gradient(135deg, #F8F9FC 0%, #E6ECFF 100%);
    margin: 0 auto;
}

.hero-content {
    flex: 1;
    padding-right: 40px;
}

.hero-content h1 {
    font-size: 3.2rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--light-text);
    margin-bottom: 30px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

/* 数据展示 */
.stats {
    display: flex;
    justify-content: space-around;
    background: var(--white);
    padding: 50px 5%;
    max-width: 1200px;
    margin: -50px auto 50px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    z-index: 10;
    position: relative;
}

.stat-item {
    text-align: center;
}

.stat-item h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-item p {
    color: var(--light-text);
    font-size: 1rem;
}

/* 产品特点 */
.features {
    padding: 80px 5%;
    background: var(--light-color);
}

.features-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(51, 88, 255, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.feature-card p {
    color: var(--light-text);
}

/* 解决方案 */
.solutions {
    padding: 80px 5%;
    background: var(--white);
}

.solutions-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.solution-card {
    background: var(--light-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.solution-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.solution-card h3 {
    margin: 20px 20px 10px;
    font-size: 1.3rem;
}

.solution-card p {
    margin: 0 20px 15px;
    color: var(--light-text);
}

.solution-card ul {
    margin: 0 20px 20px;
}

.solution-card ul li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.solution-card ul li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.solution-card .solution-btn {
    margin: 0 20px 20px;
    display: inline-block;
}

/* 关于我们 */
.about {
    padding: 80px 5%;
    background: linear-gradient(135deg, #F8F9FC 0%, #E6ECFF 100%);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.w1400{
    max-width: 1400px;
    margin: 0 auto;
   display: flex;

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

}

.about-text p {
    margin-bottom: 20px;
    max-width: 600px;
}

.about-values {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}

.value {
    text-align: center;
}

.value i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.value h4 {
    margin-bottom: 5px;
}

.value p {
    color: var(--light-text);
    font-size: 0.9rem;
}

.about-image {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-image img {
    max-width: 100%;
    border-radius: var(--border-radius);
}

/* 合作伙伴 */
.partners {
    padding: 80px 5%;
    background: var(--white);
    overflow: hidden; /* 确保超出部分不可见 */
}

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

.partners-slider {
    position: relative;
    overflow: hidden;
    padding: 20px 0;
}

.slider-track {
    display: flex;
    animation: scroll 40s linear infinite;
    width: calc(220px * 16); /* 每个partner宽度 * 总数量 (8个原始+8个复制) */
}

.partner {
    flex: 0 0 auto;
    width: 180px;
    height: 90px;
    margin: 0 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
    padding: 12px;
    transition: var(--transition);
}

.partner:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(51, 88, 255, 0.15);
}

.partner img {
    max-width: 100%;
    max-height: 60px;
    object-fit: contain;
    filter: grayscale(20%);
    opacity: 0.9;
    transition: var(--transition);
}

.partner:hover img {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.05);
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-220px * 8)); /* 每个partner宽度 * 原始数量 */
    }
}

/* 联系我们 */
.contact {
    padding: 80px 5%;
    background: var(--light-color);
}

.contact-container {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    gap: 50px;
    flex-wrap: wrap;
}

.contact-form {
    flex: 1;
    min-width: 300px;
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.form-group {
    margin-bottom: 20px;
}

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

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.info-item {
    display: flex;
    margin-bottom: 30px;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: 20px;
    margin-top: 5px;
}

.info-item h4 {
    margin-bottom: 5px;
}

.info-item p {
    color: var(--light-text);
}

.social-media {
    display: flex;
    gap: 20px;
    margin-top: 40px;
}

.social-media a {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    color: var(--primary-color);
    border-radius: 50%;
    font-size: 1.5rem;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.social-media a:hover {
    background: var(--primary-color);
    color: var(--white);
}

/* 页脚 */
footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 80px 5% 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto 50px;
}

.footer-logo h2 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.footer-logo-img {
    width: 40px;
    height: 40px;
    margin-bottom: 10px;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    display: flex;
    gap: 60px;
    flex-wrap: wrap;
}

.link-group h4 {
    margin-bottom: 20px;
    position: relative;
}

.link-group h4:after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 30px;
    height: 2px;
    background: var(--accent-color);
}

.link-group ul li {
    margin-bottom: 10px;
}

.link-group a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.link-group a:hover {
    color: var(--white);
    padding-left: 5px;
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    max-width: 1200px;
    margin: 0 auto;
}

/* 语言切换按钮 */
.language-selector {
    display: flex;
    margin-left: 15px;
}

.lang-btn {
    background: none;
    border: 1px solid var(--light-text);
    color: var(--light-text);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    margin: 0 5px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
}

.lang-btn:hover {
    background: rgba(51, 88, 255, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

/* 响应式设计 */
@media screen and (max-width: 1024px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .about-values {
        flex-wrap: wrap;
    }
    
    .value {
        flex-basis: 45%;
    }
}

@media screen and (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .language-selector {
        margin-right: 15px;
    }
    
    .lang-btn {
        width: 30px;
        height: 30px;
        font-size: 0.75rem;
    }
    
    .hero {
        flex-direction: column;
        padding: 120px 5% 60px;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 40px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .stats {
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .stat-item {
        flex-basis: 45%;
    }
    
    .about {
        flex-direction: column;
    }
    
    .about-content {
        margin-bottom: 50px;
    }
    
    .about-text p {
        max-width: 100%;
    }
    
    /* 合作伙伴轮播响应式 */
    .partner {
        width: 150px;
        margin: 0 15px;
    }
    
    .slider-track {
        width: calc(180px * 10); /* 调整宽度 */
    }
    
    @keyframes scroll {
        0% {
            transform: translateX(0);
        }
        100% {
            transform: translateX(calc(-180px * 5)); /* 调整宽度 */
        }
    }
}

@media screen and (max-width: 480px) {
    .section-header h2 {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .stat-item {
        flex-basis: 100%;
    }
    
    .value {
        flex-basis: 100%;
    }
    
    .info-item {
        flex-direction: column;
    }
    
    .info-item i {
        margin-bottom: 10px;
    }
    
    /* 合作伙伴轮播响应式 */
    .partner {
        width: 120px;
        margin: 0 10px;
        height: 80px;
    }
    
    .slider-track {
        width: calc(140px * 10); /* 调整宽度 */
    }
    
    @keyframes scroll {
        0% {
            transform: translateX(0);
        }
        100% {
            transform: translateX(calc(-140px * 5)); /* 调整宽度 */
        }
    }
}