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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

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

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #667eea;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

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

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

.bar {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding-top: 70px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    display: inline-block;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #667eea;
    border-color: #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-outline:hover {
    background: white;
    color: #667eea;
}

/* AI插图 */
.ai-illustration {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

.floating-element {
    position: absolute;
    font-size: 3rem;
    animation: float 6s ease-in-out infinite;
    opacity: 0.8;
}

.element-1 {
    top: 10%;
    left: 20%;
    animation-delay: 0s;
}

.element-2 {
    top: 20%;
    right: 15%;
    animation-delay: 1.5s;
}

.element-3 {
    bottom: 30%;
    left: 10%;
    animation-delay: 3s;
}

.element-4 {
    bottom: 15%;
    right: 20%;
    animation-delay: 4.5s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* 公司简介 */
.company-intro {
    padding: 5rem 0;
    background: white;
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.section-header p {
    font-size: 1.1rem;
    color: #666;
}

.intro-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.intro-text h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #667eea;
}

.intro-text p {
    margin-bottom: 1.5rem;
    color: #666;
    line-height: 1.8;
}

.intro-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 15px;
}

.stat-item h4 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #666;
    font-weight: 500;
}

/* 特色产品 - 使用和产品页面相同的布局 */
.featured-product {
    padding: 5rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.featured-product .product-hero-header {
    text-align: center;
    margin-bottom: 4rem;
}

.featured-product .product-hero-header h2 {
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: white;
}

.featured-product .product-hero-header .product-tagline {
    font-size: 1.2rem;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
    opacity: 0.9;
}

.featured-product .product-hero-header .product-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

/* 手机模型 */
.phone-mockup {
    width: 300px;
    height: 600px;
    background: #333;
    border-radius: 30px;
    padding: 20px;
    margin: 0 auto;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 20px;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.app-interface {
    text-align: center;
}

.ai-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 2rem;
    border-radius: 25px;
    font-weight: 600;
    margin-bottom: 2rem;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.task-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.task-item {
    background: white;
    padding: 1rem;
    border-radius: 10px;
    text-align: left;
    color: #333;
    font-size: 0.9rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 优势区域 */
.advantages {
    padding: 5rem 0;
    background: #f8f9fa;
}

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

.advantage-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.advantage-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #333;
}

.advantage-item p {
    color: #666;
    line-height: 1.6;
}

/* 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: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #ecf0f1;
}

.footer-section p {
    color: #bdc3c7;
    margin-bottom: 0.5rem;
}

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

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

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #3498db;
}

.social-links span {
    color: #bdc3c7;
    font-size: 0.9rem;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 1rem;
    text-align: center;
    color: #95a5a6;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .intro-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .intro-stats {
        flex-direction: row;
        justify-content: space-between;
    }

    .stat-item {
        flex: 1;
        margin: 0 0.5rem;
    }

    .featured-product .product-demo-section {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .featured-product .feature-sidebar {
        width: 100%;
    }
    
    .featured-product .feature-icon-list {
        flex-direction: row;
        justify-content: center;
        padding: 1.5rem 2rem;
    }
    
    .featured-product .demo-content-area {
        min-width: auto;
        max-width: none;
    }
    
    .featured-product .product-demo {
        width: 100%;
        max-width: 350px;
        margin: 0 auto;
    }

    .phone-mockup {
        width: 250px;
        height: 500px;
    }

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

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }

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

    .product-info h2 {
        font-size: 2rem;
    }

    .cta-content h2 {
        font-size: 2rem;
    }
}

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 8rem 0 4rem;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 公司概述 */
.company-overview {
    padding: 5rem 0;
    background: white;
}

.overview-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.overview-text h2 {
    font-size: 2.2rem;
    margin-bottom: 2rem;
    color: #333;
}

.overview-text p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: #666;
    font-size: 1.1rem;
}

.company-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 300px;
    margin: 0 auto;
}

.visual-element {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    font-size: 3rem;
    transition: transform 0.3s ease;
}

.visual-element:hover {
    transform: scale(1.1);
}

/* 企业文化 */
.company-culture {
    padding: 5rem 0;
    background: #f8f9fa;
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.culture-item {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
}

.culture-item:hover {
    transform: translateY(-5px);
}

.culture-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.culture-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.culture-item p {
    color: #666;
    line-height: 1.7;
}

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

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-date {
    flex: 0 0 120px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    text-align: center;
    font-weight: 600;
    margin: 0 2rem;
    position: relative;
    z-index: 2;
}

.timeline-content {
    flex: 1;
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    position: relative;
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.timeline-content p {
    color: #666;
    line-height: 1.6;
}

/* 团队部分 */
.team-section {
    padding: 5rem 0;
    background: #f8f9fa;
}

.team-intro p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 3rem;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.strength-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.strength-item h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: #333;
}

.strength-item p {
    color: #666;
    line-height: 1.6;
}

/* 公司资质 */
.company-qualifications {
    padding: 5rem 0;
    background: white;
}

.qualifications-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.qualification-item {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 20px;
}

.qualification-item h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: #333;
}

.info-grid {
    display: grid;
    gap: 1rem;
}

.info-item {
    display: flex;
    align-items: center;
    padding: 0.8rem 0;
    border-bottom: 1px solid #e9ecef;
}

.info-item:last-child {
    border-bottom: none;
}

.label {
    font-weight: 600;
    color: #495057;
    min-width: 100px;
}

.value {
    color: #666;
    flex: 1;
}

.capability-list {
    list-style: none;
    padding: 0;
}

.capability-list li {
    padding: 0.8rem 0;
    color: #666;
    border-bottom: 1px solid #e9ecef;
    position: relative;
    padding-left: 1.5rem;
}

.capability-list li:last-child {
    border-bottom: none;
}

.capability-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: 600;
}

/* 联系CTA */
.contact-cta {
    padding: 4rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.contact-cta .cta-content h2 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
}

.contact-cta .cta-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

@media (max-width: 768px) {
    .page-header h1 {
        font-size: 2.5rem;
    }

    .overview-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: column !important;
        align-items: flex-start;
        padding-left: 50px;
    }

    .timeline-date {
        margin: 0 0 1rem 0;
        flex: none;
    }

    .timeline-content {
        margin: 0;
    }

    .qualifications-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .team-strengths {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .phone-mockup {
        width: 200px;
        height: 400px;
    }

    .ai-illustration {
        width: 300px;
        height: 300px;
    }

    .floating-element {
        font-size: 2rem;
    }
    
    .featured-product .product-hero-header h2 {
        font-size: 2.2rem;
    }
    
    .featured-product .product-hero-header .product-tagline {
        font-size: 1rem;
        padding: 0 1rem;
    }
    
    .featured-product .feature-icon-list {
        gap: 1rem;
    }
    
    .featured-product .feature-icon-item {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .featured-product .demo-description {
        padding: 2rem;
    }

    .page-header {
        padding: 6rem 0 3rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    .overview-text h2 {
        font-size: 1.8rem;
    }

    .culture-icon {
        font-size: 2.5rem;
    }

    .contact-cta .cta-content h2 {
        font-size: 1.8rem;
    }
}

/* 产品页面样式 */
.product-hero {
    padding: 5rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.product-hero-header {
    text-align: center;
    margin-bottom: 4rem;
}

.product-hero-header h2 {
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: white;
}

.product-hero-header .product-tagline {
    font-size: 1.2rem;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
    opacity: 0.9;
}

.product-demo-section {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 3rem;
    align-items: start;
    max-width: 1400px;
    margin: 0 auto;
}

/* 功能图标侧边栏 */
.feature-sidebar {
    width: 80px;
}

.feature-icon-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem 1rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.feature-icon-item {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.feature-icon-item:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.feature-icon-item.active {
    background: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.feature-icon-item::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 80px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.feature-icon-item:hover::after {
    opacity: 1;
}

/* 演示内容区域 */
.demo-content-area {
    min-width: 400px;
    max-width: 500px;
}

.demo-description {
    background: rgba(255, 255, 255, 0.1);
    padding: 2.5rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.demo-text-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: white;
}

.feature-list {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.feature-list li {
    padding: 0.8rem 0;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    line-height: 1.6;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-list li:last-child {
    border-bottom: none;
}

.btn-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.8rem 2rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 25px;
    display: inline-block;
    transition: all 0.3s ease;
}

.btn-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.product-hero-header .product-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

/* 产品演示 */
.product-demo {
    width: 350px;
}

.demo-container {
    perspective: 1000px;
}

.demo-phone {
    width: 320px;
    height: 640px;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    border-radius: 35px;
    padding: 25px;
    margin: 0 auto;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    transform: rotateY(-10deg) rotateX(5deg);
    transition: transform 0.3s ease;
}

.demo-phone:hover {
    transform: rotateY(-5deg) rotateX(2deg);
}

.demo-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 25px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.demo-header {
    text-align: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #dee2e6;
}

.demo-header h4 {
    color: #333;
    font-size: 1.1rem;
    font-weight: 600;
}

.ai-button-demo {
    text-align: center;
    margin-bottom: 2rem;
}

.ai-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
    transition: transform 0.2s ease;
}

.ai-btn:hover {
    transform: translateY(-2px);
}

.demo-tasks {
    flex: 1;
    overflow-y: auto;
}

.task-category {
    margin-bottom: 1.5rem;
}

.task-category h5 {
    color: #495057;
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.task {
    background: white;
    padding: 0.8rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
    color: #666;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* 产品功能 */
.product-features {
    padding: 5rem 0;
    background: #f8f9fa;
}

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

.feature-item {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.feature-item h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: #333;
    text-align: center;
}

.feature-item > p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    text-align: center;
}

.feature-details {
    list-style: none;
    padding: 0;
}

.feature-details li {
    padding: 0.5rem 0;
    color: #666;
    font-size: 0.95rem;
    position: relative;
    padding-left: 1.5rem;
}

.feature-details li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: 600;
}

/* 技术优势 */
.tech-advantages {
    padding: 5rem 0;
    background: white;
}

.tech-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.tech-item {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 15px;
}

.tech-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: #333;
}

.tech-item p {
    color: #666;
    line-height: 1.6;
}

.tech-diagram {
    text-align: center;
    padding: 2rem;
}

.tech-layer {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1rem 0;
    flex-wrap: wrap;
}

.tech-layer span {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.8rem 1.2rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.tech-arrow {
    font-size: 2rem;
    color: #667eea;
    margin: 0.5rem 0;
}

/* 使用场景 */
.use-cases {
    padding: 5rem 0;
    background: #f8f9fa;
}

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

.case-item {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
}

.case-item:hover {
    transform: translateY(-5px);
}

.case-image {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.case-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #333;
}

.case-item p {
    color: #666;
    line-height: 1.6;
}

/* 产品路线图 */
.product-roadmap {
    padding: 5rem 0;
    background: white;
}

.roadmap-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.roadmap-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.roadmap-item {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.roadmap-item:nth-child(odd) {
    flex-direction: row;
}

.roadmap-item:nth-child(even) {
    flex-direction: row-reverse;
}

.roadmap-phase {
    flex: 0 0 100px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem;
    border-radius: 50px;
    text-align: center;
    font-weight: 600;
    margin: 0 2rem;
    position: relative;
    z-index: 2;
}

.roadmap-content {
    flex: 1;
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    position: relative;
}

.roadmap-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.roadmap-content p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.roadmap-date {
    color: #667eea;
    font-weight: 500;
    font-size: 0.9rem;
}

/* 产品CTA */
.product-cta {
    padding: 4rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.product-cta .cta-content h2 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
}

.product-cta .cta-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* 产品页面响应式 */
@media (max-width: 1200px) {
    .product-demo-section {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .feature-sidebar {
        width: 100%;
    }
    
    .feature-icon-list {
        flex-direction: row;
        justify-content: center;
        padding: 1.5rem 2rem;
    }
    
    .demo-content-area {
        min-width: auto;
        max-width: none;
    }
    
    .product-demo {
        width: 100%;
        max-width: 350px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .product-hero {
        padding: 3rem 0;
    }
    
    .product-hero-header h2 {
        font-size: 2.2rem;
    }
    
    .product-hero-header .product-tagline {
        font-size: 1rem;
        padding: 0 1rem;
    }
    
    .product-demo-section {
        gap: 1.5rem;
    }

    .demo-phone {
        width: 280px;
        height: 560px;
        transform: none;
    }
    
    .demo-phone:hover {
        transform: none;
    }

    .tech-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .tech-layer {
        flex-direction: column;
        align-items: center;
    }

    .roadmap-timeline::before {
        left: 20px;
    }

    .roadmap-item {
        flex-direction: column !important;
        align-items: flex-start;
        padding-left: 50px;
    }

    .roadmap-phase {
        margin: 0 0 1rem 0;
        flex: none;
    }

    .roadmap-content {
        margin: 0;
    }

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

    .cases-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .feature-icon-list {
        gap: 1rem;
    }
    
    .feature-icon-item {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .feature-icon-item::after {
        display: none;
    }
    
    .demo-description {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .demo-phone {
        width: 240px;
        height: 480px;
        padding: 20px;
    }

    .product-info h2 {
        font-size: 1.8rem;
    }

    .product-tagline {
        font-size: 1.1rem;
    }

    .case-image {
        font-size: 3rem;
    }

    .tech-layer span {
        font-size: 0.8rem;
        padding: 0.6rem 1rem;
    }

    .product-cta .cta-content h2 {
        font-size: 1.8rem;
    }
}

/* 联系页面样式 */
.contact-main {
    padding: 5rem 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h2 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    color: #333;
}

.contact-intro {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 3rem;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.contact-method:hover {
    transform: translateY(-2px);
}

.method-icon {
    font-size: 2.5rem;
    margin-top: 0.5rem;
}

.method-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.method-info p {
    font-size: 1.1rem;
    color: #667eea;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.method-note {
    font-size: 0.9rem;
    color: #666;
}

/* 联系表单 */
.contact-form {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 20px;
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.contact-form > p {
    color: #666;
    margin-bottom: 2rem;
}

.contact-form-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

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

.form-group label {
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.8rem 1rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

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

.form-submit {
    margin-top: 1rem;
    align-self: flex-start;
}

/* 公司详细信息 */
.company-details {
    padding: 5rem 0;
    background: #f8f9fa;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.detail-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.detail-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: #333;
}

.detail-item {
    display: flex;
    align-items: center;
    padding: 0.8rem 0;
    border-bottom: 1px solid #f1f3f4;
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-item .label {
    font-weight: 600;
    color: #495057;
    min-width: 100px;
    font-size: 0.95rem;
}

.detail-item .value {
    color: #666;
    flex: 1;
}

.business-scope {
    list-style: none;
    padding: 0;
}

.business-scope li {
    padding: 0.8rem 0;
    color: #666;
    border-bottom: 1px solid #f1f3f4;
    position: relative;
    padding-left: 1.5rem;
}

.business-scope li:last-child {
    border-bottom: none;
}

.business-scope li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: 600;
}

.address-info {
    margin-bottom: 1.5rem;
}

.address-info:last-child {
    margin-bottom: 0;
}

.address-info p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 0.3rem;
}

.contact-detail p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

/* 地图区域 */
.map-section {
    padding: 5rem 0;
    background: white;
}

.map-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.map-placeholder {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 4rem 2rem;
    border-radius: 20px;
    text-align: center;
    border: 2px dashed #dee2e6;
}

.map-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.map-placeholder h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.map-placeholder p {
    color: #666;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.location-tips {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
}

.location-tips h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: #333;
}

.location-tips ul {
    list-style: none;
    padding: 0;
}

.location-tips li {
    padding: 0.8rem 0;
    color: #666;
    line-height: 1.6;
    border-bottom: 1px solid #e9ecef;
}

.location-tips li:last-child {
    border-bottom: none;
}

.location-tips strong {
    color: #495057;
}

/* 常见问题 */
.faq-section {
    padding: 5rem 0;
    background: #f8f9fa;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.faq-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.faq-item h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: #333;
}

.faq-item p {
    color: #666;
    line-height: 1.7;
}

/* 联系页面响应式 */
@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

    .contact-form {
        padding: 2rem;
    }

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

    .map-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .contact-info h2 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .contact-method {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .method-icon {
        margin-top: 0;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .detail-card {
        padding: 1.5rem;
    }

    .map-placeholder {
        padding: 3rem 1.5rem;
    }

    .location-tips {
        padding: 1.5rem;
    }
}