/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a56db;
    --secondary-color: #7e3af2;
    --accent-color: #0694a2;
    --text-color: #374151;
    --light-text: #6b7280;
    --bg-color: #ffffff;
    --light-bg: #f9fafb;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 16px;
}

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

.btn-primary:hover {
    background-color: #1e40af;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background-color: #6d28d9;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

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

/* 导航栏 */
.navbar {
    background-color: var(--bg-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo {
    text-decoration: none;
    color: var(--text-color);
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

.logo span {
    font-size: 12px;
    color: var(--light-text);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: var(--transition);
}

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

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.nav-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
}

/* 英雄区域 */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

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

.hero-content {
    flex: 1;
}

.hero-content h2 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-color);
}

.hero-content p {
    font-size: 18px;
    color: var(--light-text);
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    flex: 1;
}

.tech-illustration {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.tech-illustration i {
    font-size: 60px;
    color: var(--primary-color);
    background: white;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.tech-illustration i:hover {
    transform: translateY(-10px);
    color: var(--secondary-color);
}

/* 公司简介 */
.intro {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-color);
}

.section-header p {
    font-size: 18px;
    color: var(--light-text);
    max-width: 600px;
    margin: 0 auto;
}

.intro-content {
    display: flex;
    gap: 60px;
    align-items: center;
}

.intro-text {
    flex: 1;
}

.intro-text h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-color);
}

.intro-text p {
    margin-bottom: 20px;
    color: var(--light-text);
    line-height: 1.8;
}

.intro-stats {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background-color: var(--light-bg);
    border-radius: var(--radius);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.stat-item h4 {
    font-size: 40px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-item p {
    color: var(--light-text);
    font-size: 16px;
}

/* 核心业务 */
.services {
    padding: 80px 0;
    background-color: var(--light-bg);
}

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

.service-card {
    background-color: var(--bg-color);
    padding: 40px 30px;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.service-icon i {
    font-size: 32px;
    color: white;
}

.service-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-color);
}

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

/* 最新动态 */
.news-preview {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.news-preview .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.view-all {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.view-all:hover {
    color: var(--secondary-color);
}

.view-all i {
    margin-left: 5px;
    transition: var(--transition);
}

.view-all:hover i {
    transform: translateX(5px);
}

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

.news-card {
    background-color: var(--light-bg);
    padding: 30px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.news-date {
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 15px;
}

.news-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-color);
}

.news-card p {
    color: var(--light-text);
    margin-bottom: 20px;
    line-height: 1.6;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.read-more:hover {
    color: var(--secondary-color);
    gap: 10px;
}

/* 页脚 */
.footer {
    background-color: #1f2937;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-info p {
    margin-bottom: 10px;
    color: #d1d5db;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-info i {
    width: 20px;
}

.footer-links h4,
.footer-social h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #d1d5db;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #374151;
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #374151;
    color: #9ca3af;
    font-size: 14px;
}

.footer-bottom p {
    margin-bottom: 10px;
}

.footer-bottom a {
    color: #9ca3af;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: white;
    text-decoration: underline;
}

/* 关于我们页面样式 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 80px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.company-intro {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.company-intro .intro-content {
    display: flex;
    gap: 60px;
    align-items: center;
}

.company-intro .intro-text {
    flex: 1;
}

.company-intro .intro-text h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--text-color);
}

.company-intro .intro-text p {
    margin-bottom: 20px;
    color: var(--light-text);
    line-height: 1.8;
}

.company-intro .intro-image {
    flex: 1;
}

.image-placeholder {
    background-color: var(--light-bg);
    border-radius: var(--radius);
    padding: 60px 40px;
    text-align: center;
    border: 2px dashed var(--border-color);
}

.image-placeholder i {
    font-size: 80px;
    color: var(--light-text);
    margin-bottom: 20px;
}

.image-placeholder p {
    color: var(--light-text);
    font-size: 16px;
}

/* 时间线 */
.timeline-section {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 80px;
}

.timeline-year {
    position: absolute;
    left: 0;
    top: 0;
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    z-index: 1;
}

.timeline-content {
    background-color: var(--bg-color);
    padding: 25px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.timeline-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-color);
}

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

/* 企业文化 */
.culture-section {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.culture-card {
    text-align: center;
    padding: 40px 30px;
    background-color: var(--light-bg);
    border-radius: var(--radius);
    transition: var(--transition);
}

.culture-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.culture-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.culture-icon i {
    font-size: 32px;
    color: white;
}

.culture-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-color);
}

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

/* 团队介绍 */
.team-section {
    padding: 80px 0;
    background-color: var(--light-bg);
}

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

.team-card {
    text-align: center;
    padding: 30px;
    background-color: var(--bg-color);
    border-radius: var(--radius);
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.team-avatar {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.team-avatar i {
    font-size: 48px;
    color: white;
}

.team-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-color);
}

.team-position {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 15px;
    font-size: 16px;
}

.team-desc {
    color: var(--light-text);
    line-height: 1.6;
    font-size: 14px;
}

/* 产品页面样式 */
.products-categories {
    padding: 80px 0;
    background-color: var(--bg-color);
}

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

.category-card {
    text-align: center;
    padding: 40px 30px;
    background-color: var(--light-bg);
    border-radius: var(--radius);
    transition: var(--transition);
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.category-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.category-icon i {
    font-size: 32px;
    color: white;
}

.category-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-color);
}

.category-card p {
    color: var(--light-text);
    margin-bottom: 25px;
    line-height: 1.6;
}

/* 产品详情 */
.product-detail {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.product-detail.alt {
    background-color: var(--light-bg);
}

.product-header {
    text-align: center;
    margin-bottom: 60px;
}

.product-header h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-color);
}

.product-header p {
    font-size: 18px;
    color: var(--light-text);
    max-width: 600px;
    margin: 0 auto;
}

.product-content {
    display: flex;
    gap: 60px;
    align-items: center;
}

.product-features {
    flex: 1;
}

.feature-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: flex-start;
}

.feature-item i {
    font-size: 24px;
    color: var(--primary-color);
    background-color: var(--light-bg);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-color);
}

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

.product-image {
    flex: 1;
}

/* 服务流程 */
.service-process {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.step {
    text-align: center;
    padding: 30px 20px;
    background-color: var(--light-bg);
    border-radius: var(--radius);
    transition: var(--transition);
    position: relative;
}

.step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-color);
}

.step p {
    color: var(--light-text);
    line-height: 1.6;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content h2 {
        font-size: 36px;
    }
    
    .intro-content {
        flex-direction: column;
    }
    
    .tech-illustration {
        justify-content: center;
    }
    
    .company-intro .intro-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: var(--bg-color);
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .services-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .intro-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-content h2 {
        font-size: 28px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .tech-illustration i {
        width: 80px;
        height: 80px;
        font-size: 40px;
    }
}