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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-white);
}

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

/* 导航栏 */
.navbar {
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 3px 0;
    transition: 0.3s;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero-text p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-illustration {
    text-align: center;
    animation: fadeInRight 1s ease 0.3s both;
}

.hero-illustration i {
    font-size: 15rem;
    opacity: 0.2;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

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

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

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

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

.btn-light:hover {
    background-color: var(--bg-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

/* 服务区域 */
.services-section {
    padding: 5rem 0;
    background-color: var(--bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    text-align: center;
}

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

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.service-icon i {
    font-size: 2rem;
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.service-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 优势区域 */
.advantages-section {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.advantages-grid {
    display: grid;
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.advantage-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2rem;
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(10px);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.advantage-icon i {
    font-size: 1.5rem;
    color: white;
}

.advantage-right h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.advantage-right p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 统计区域 */
.stats-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.125rem;
    opacity: 0.9;
}

/* CTA区域 */
.cta-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* 页脚 */
.footer {
    background-color: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-section h4 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.footer-section p {
    color: #9ca3af;
    line-height: 1.8;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-section ul li i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* 产品页面 */
.products-section {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--bg-white);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
}

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

.product-card.featured {
    grid-column: span 2;
    border: 3px solid var(--primary-color);
}

.product-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-weight: 600;
    font-size: 0.875rem;
}

.product-image {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    padding: 3rem;
    text-align: center;
}

.product-image i {
    font-size: 5rem;
    color: white;
    opacity: 0.9;
}

.product-content {
    padding: 2rem;
}

.product-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.product-description {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.product-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.product-features li {
    padding: 0.5rem 0;
    color: var(--text-light);
}

.product-features li i {
    color: var(--success-color);
    margin-right: 0.5rem;
}

.product-footer {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.product-footer .btn {
    flex: 1;
    min-width: 150px;
    text-align: center;
}

/* 服务详情页面 */
.services-detail-section {
    padding: 5rem 0;
}

.service-detail {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
    align-items: start;
}

.service-detail.reverse {
    direction: rtl;
}

.service-detail.reverse > * {
    direction: ltr;
}

.service-detail-icon {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.service-detail-icon i {
    font-size: 3rem;
    color: white;
}

.service-detail-right h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.service-intro {
    color: var(--text-light);
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.feature-item {
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
}

.feature-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-item h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

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

/* 服务流程 */
.process-section {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.process-step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    padding: 2rem;
    background: var(--bg-white);
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.process-step:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.process-step h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

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

.process-arrow {
    font-size: 2rem;
    color: var(--primary-color);
}

/* 关于我们页面 */
.about-intro {
    padding: 5rem 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.about-text p {
    color: var(--text-light);
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.about-illustration {
    text-align: center;
}

.about-illustration i {
    font-size: 15rem;
    color: var(--primary-color);
    opacity: 0.1;
}

/* 企业文化 */
.culture-section {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.culture-item {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.culture-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.culture-icon i {
    font-size: 2rem;
    color: white;
}

.culture-item h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

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

/* 发展历程 */
.timeline-section {
    padding: 5rem 0;
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--border-color);
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    align-items: center;
}

.timeline-item:nth-child(even) .timeline-content {
    text-align: right;
}

.timeline-date {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    padding: 1rem;
    background: var(--bg-white);
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.timeline-content {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

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

/* 团队部分 */
.team-section {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.team-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.team-stat {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.stat-icon i {
    font-size: 1.5rem;
    color: white;
}

/* 联系页面 */
.contact-section {
    padding: 5rem 0;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.contact-info > p {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.25rem;
    color: white;
}

.contact-details h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

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

.social-links {
    margin-top: 2rem;
}

.social-links h3 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

/* 联系表单 */
.contact-form-wrapper h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.contact-form-wrapper > p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.contact-form {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

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

.form-group textarea {
    resize: vertical;
}

/* 地图区域 */
.map-section {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.map-container {
    margin-top: 2rem;
}

.map-placeholder {
    background: var(--bg-white);
    height: 400px;
    border-radius: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    box-shadow: var(--shadow-md);
}

.map-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    opacity: 0.3;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 响应式设计 */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero-content,
    .about-content {
        grid-template-columns: 1fr;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

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

    .product-card.featured {
        grid-column: span 1;
    }

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

    .service-detail {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .service-detail-icon {
        margin: 0 auto;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .process-steps {
        flex-direction: column;
    }

    .process-arrow {
        transform: rotate(90deg);
    }

    .timeline::before {
        left: 0;
    }

    .timeline-item {
        grid-template-columns: auto 1fr;
    }

    .timeline-item:nth-child(even) .timeline-content {
        text-align: left;
    }
}

@media (max-width: 768px) {
    .page-header h1 {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .hero-illustration i {
        font-size: 8rem;
    }

    .about-illustration i {
        font-size: 8rem;
    }
}