/* 全局重置和基础样式 */
:root {
    /* 主题颜色 */
    --primary-color: #2B50AA;
    --secondary-color: #1A365D;
    --accent-color: #4A90E2;
    --text-color: #333333;
    --light-text: #666666;
    --background-color: #FFFFFF;
    --light-background: #F5F7FA;
    --border-color: #E5E7EB;
    
    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 导航栏样式 */
.navbar {
    background: var(--background-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: transform 0.3s ease-in-out;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo img {
    height: 40px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    transition: color 0.3s;
}

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

.nav-menu a.active {
    color: var(--primary-color);
    font-weight: bold;
    border-bottom: 2px solid var(--primary-color);
    background: rgba(43,80,170,0.08);
}
    
/* 主视觉区域样式 */
.hero {
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.hero h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

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

.btn.secondary {
    background: transparent;
    border: 2px solid white;
    color: white;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* 核心价值主张样式 */
.core-values {
    padding: var(--spacing-xl) 0;
    background: var(--light-background);
}

.core-values .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.value-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease-in-out;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

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

.value-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.value-card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

/* 应用场景样式 */
.use-cases {
    padding: var(--spacing-xl) 0;
}

.use-cases h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.5rem;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.case-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease-in-out;
}

.case-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.case-card h3 {
    padding: 20px;
    margin: 0;
    font-size: 1.3rem;
}

.case-card p {
    padding: 0 20px 20px;
    color: var(--light-text);
}

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

/* 合作伙伴样式 */
.partners {
    padding: var(--spacing-xl) 0;
    background: var(--light-background);
}

.partners h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.5rem;
}

.partner-logos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    align-items: center;
    margin-top: var(--spacing-lg);
}

.partner-logo {
    width: 240px;
    height: 200px;
    /*max-width: 150px;*/
    /*filter: grayscale(1);*/
    /*opacity: 0.7;*/
    transition: all 0.3s ease-in-out;
}

.partner-logo:hover {
    /*filter: grayscale(0);*/
    opacity: 1;
    transform: scale(1.05);
}

/* 页脚样式 */
footer {
    background: var(--secondary-color);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.footer-col h4 {
    margin-bottom: var(--spacing-md);
}

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

.footer-col ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-col a {
    color: white;
    text-decoration: none;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-links a {
    font-size: 1.5rem;
    transition: all 0.3s ease-in-out;
}

.social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.compliance {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-top: var(--spacing-sm);
}

/* 导航栏响应式切换按钮 */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-color);
    transition: all 0.3s ease-in-out;
}

.nav-toggle span.active:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle span.active:nth-child(2) {
    opacity: 0;
}

.nav-toggle span.active:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* 页面标题样式 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 120px 0 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
}

.page-header p {
    font-size: 1.4rem;
    opacity: 0.9;
}

/* 公司简介样式 */
.company-intro {
    padding: 80px 0;
}

.intro-grid {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 50px;
    align-items: center;
}

.intro-content h2 {
    font-size: 2rem;
    margin: 30px 0 20px;
}

.intro-content h2:first-child {
    margin-top: 0;
}

.values-list {
    list-style: none;
    margin-top: 20px;
}

.values-list li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.values-list li strong {
    color: var(--primary-color);
    margin-right: 10px;
}

.intro-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* 核心团队样式 */
.team {
    padding: 80px 0;
    background: var(--light-background);
}

.team h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.team-member {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease-in-out;
}

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

.member-photo {
    width: 360px;
    height: 360px;
    overflow: hidden;
}

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

.team-member h3 {
    margin: 20px 20px 10px;
    font-size: 1.4rem;
}

.team-member .position {
    margin: 0 20px 5px;
    color: var(--primary-color);
    font-weight: 500;
}

.team-member .background {
    margin: 0 20px 20px;
    color: var(--light-text);
    font-size: 0.9rem;
    line-height: 1.4;
}

/* 技术实力样式 */
.technology {
    padding: 80px 0;
}

.technology h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}

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

.tech-card {
    background: white;
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease-in-out;
}

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

.tech-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.tech-card h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.tech-card p {
    margin-bottom: 10px;
    color: var(--light-text);
}

/* 合规监管样式 */
.compliance {
    padding: 80px 0;
    background: var(--light-background);
}

.compliance h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}

.compliance-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.compliance-text h3 {
    font-size: 1.5rem;
    margin: 30px 0 15px;
}

.compliance-text h3:first-child {
    margin-top: 0;
}

.compliance-text p {
    color: var(--light-text);
    margin-bottom: 20px;
}

.compliance-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* 合作伙伴分类样式 */
.partner-categories {
    margin-top: 40px;
}

.partner-category {
    margin-bottom: 40px;
}

.partner-category h3 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: var(--light-text);
}

.partner-category .partner-logos {
    justify-content: center;
    gap: 60px;
}

/* 解決方案概览样式 */
.solutions-overview {
    padding: 80px 0;
}

.overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.overview-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.overview-content p {
    margin-bottom: 30px;
    color: var(--light-text);
    font-size: 1.1rem;
    line-height: 1.6;
}

.overview-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

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

.feature i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.feature span {
    font-weight: 500;
}

.overview-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* 解決方案卡片样式 */
.solution-section {
    padding: 80px 0;
}

.solution-section.bg-light {
    background: var(--light-background);
}

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

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

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

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

.solution-card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease-in-out;
}

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

.solution-icon {
    width: 60px;
    height: 60px;
    background: var(--light-background);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.solution-icon i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.solution-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.solution-card ul {
    list-style: none;
    margin-bottom: 20px;
}

.solution-card ul li {
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
    color: var(--light-text);
}

.solution-card ul li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.learn-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.learn-more i {
    transition: transform 0.3s;
}

.learn-more:hover i {
    transform: translateX(5px);
}

/* 技术优势样式 */
.tech-advantages {
    padding: 80px 0;
}

.tech-advantages h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}

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

.advantage-card {
    text-align: center;
    padding: 30px;
}

.advantage-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

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

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

/* 合作流程样式 */
.cooperation-process {
    padding: 80px 0;
}

.cooperation-process h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
    position: relative;
}

.process-timeline:before {
    content: "";
    position: absolute;
    top: 40px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--border-color);
    z-index: 1;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 2;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 20px;
}

.process-step h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.process-step p {
    color: var(--light-text);
}

.process-cta {
    text-align: center;
}

/* 联系页面样式 */
.contact-section {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
}

/* 联系信息样式 */
.contact-info {
    background: var(--light-background);
    padding: 40px;
    border-radius: 10px;
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 30px;
}

.info-items {
    margin-bottom: 40px;
}

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

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

.item-content h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.item-content p {
    color: var(--light-text);
    margin-bottom: 5px;
}

.social-connect h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.social-icons {
    display: flex;
    gap: 20px;
}

.social-icon {
    display: flex;
    align-items: center;
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s;
}

.social-icon i {
    font-size: 1.5rem;
    margin-right: 10px;
}

.social-icon:hover {
    color: var(--primary-color);
}

/* 联系表单样式 */
.contact-form {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.contact-form h2 {
    font-size: 2rem;
    margin-bottom: 30px;
}

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

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

.form-group .required {
    color: var(--primary-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    transition: all 0.3s ease-in-out;
    border: 2px solid transparent;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(43, 80, 170, 0.1);
}

.form-group input.error,
.form-group textarea.error {
    border-color: #ff4444;
    background-color: rgba(255, 68, 68, 0.05);
}

.form-group button {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
    border: none;
    border-radius: 5px;
    background: var(--primary-color);
    color: white;
    cursor: pointer;
    transition: background-color 0.3s;
}

.form-group button:hover {
    background-color: var(--secondary-color);
}

/* FAQ部分样式 */
.faq-section {
    padding: 80px 0;
    background: var(--light-background);
}

.faq-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}

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

.faq-item {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.faq-item p {
    color: var(--light-text);
    line-height: 1.6;
}

/* 响应式调整 */
@media screen and (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }

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

    .social-icons {
        flex-wrap: wrap;
    }

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

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* 导航栏动画 */
.navbar.scroll-down {
    transform: translateY(-100%);
}

.navbar.scroll-up {
    transform: translateY(0);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease-in-out;
    z-index: 1000;
}

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

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

/* 卡片悬停效果 */
.value-card,
.case-card,
.tech-card,
.team-member {
    transition: all 0.3s ease-in-out;
}

.value-card:hover,
.case-card:hover,
.tech-card:hover,
.team-member:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

/* 表单样式增强 */
.contact-form input,
.contact-form textarea {
    transition: all 0.3s ease-in-out;
    border: 2px solid transparent;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(43, 80, 170, 0.1);
}

.contact-form input.error,
.contact-form textarea.error {
    border-color: #ff4444;
    background-color: rgba(255, 68, 68, 0.05);
}

/* 图片悬停效果 */
.partner-logo {
    transition: all 0.3s ease-in-out;
}

.partner-logo:hover {
    transform: scale(1.05);
}

/* 社交媒体图标悬停效果 */
.social-links a {
    transition: all 0.3s ease-in-out;
}

.social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* 页面切换动画 */
.page-transition {
    animation: fadeIn 0.5s ease-out;
}

/* 加载动画 */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 图片加载效果 */
.lazy-load {
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
}

.lazy-load.loaded {
    opacity: 1;
}

/* 按钮点击效果 */
.btn:active {
    transform: scale(0.98);
}

/* 文本选择效果 */
::selection {
    background: var(--primary-color);
    color: white;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}