/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    color: #333;
    line-height: 1.6;
}

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

ul {
    list-style: none;
}

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: #2196f3;
    color: #fff;
}

.btn-primary:hover {
    background: #1976d2;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #fff;
    color: #2196f3;
    border: 2px solid #2196f3;
}

.btn-secondary:hover {
    background: #e3f2fd;
}

/* 头部导航 */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #2196f3, #1976d2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
    font-weight: bold;
}

.logo-text h1 {
    font-size: 20px;
    color: #2196f3;
    margin-bottom: 2px;
}

.logo-text span {
    font-size: 12px;
    color: #999;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav-item {
    font-size: 15px;
    color: #666;
    padding: 8px 0;
    position: relative;
    transition: color 0.3s;
}

.nav-item:hover,
.nav-item.active {
    color: #2196f3;
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: #2196f3;
}

.header-btn {
    padding: 10px 25px;
    background: #2196f3;
    color: #fff;
    border-radius: 6px;
    font-size: 14px;
    transition: background 0.3s;
}

.header-btn:hover {
    background: #1976d2;
}

/* 横幅区域 */
.banner {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    padding: 60px 0;
    overflow: hidden;
}

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

.banner-text h2 {
    font-size: 36px;
    color: #1976d2;
    margin-bottom: 20px;
    line-height: 1.4;
}

.banner-text p {
    font-size: 16px;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.8;
}

.banner-btns {
    display: flex;
    gap: 15px;
}

.banner-image {
    display: flex;
    justify-content: center;
}

.phone-mockup {
    width: 280px;
    height: 500px;
    background: #333;
    border-radius: 30px;
    padding: 10px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #fff;
    border-radius: 22px;
    overflow: hidden;
}

.app-header {
    background: #2196f3;
    padding: 15px;
    text-align: center;
}

.app-logo {
    color: #fff;
    font-size: 16px;
    font-weight: bold;
}

.app-content {
    padding: 15px;
}

.app-item {
    height: 80px;
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    border-radius: 10px;
    margin-bottom: 12px;
}

/* 区域标题 */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 32px;
    color: #333;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 16px;
    color: #666;
}

/* 核心优势 */
.features {
    padding: 80px 0;
    background: #fff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-item {
    padding: 30px;
    background: #f9f9f9;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 10px;
}

.feature-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 产品预览 */
.products-preview {
    padding: 80px 0;
    background: #f5f5f5;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.product-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.product-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.product-card h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 15px;
}

.product-card ul {
    font-size: 14px;
    color: #666;
}

.product-card li {
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
}

.product-card li:last-child {
    border-bottom: none;
}

/* 数据展示 */
.stats {
    background: linear-gradient(135deg, #1976d2, #2196f3);
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    color: #fff;
}

.stat-number {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    opacity: 0.9;
}

/* 客户案例 */
.cases {
    padding: 80px 0;
    background: #fff;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.case-item {
    padding: 25px;
    background: #f9f9f9;
    border-radius: 12px;
    text-align: center;
}

.case-logo {
    font-size: 18px;
    font-weight: bold;
    color: #2196f3;
    margin-bottom: 15px;
}

.case-item p {
    font-size: 14px;
    color: #666;
}

/* 行动召唤 */
.cta {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    padding: 80px 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 32px;
    color: #333;
    margin-bottom: 15px;
}

.cta-content p {
    font-size: 16px;
    color: #666;
    margin-bottom: 30px;
}

/* 页脚 */
.footer {
    background: #333;
    color: #fff;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo .logo-icon {
    background: #2196f3;
}

.footer-logo .logo-text h3 {
    font-size: 18px;
    color: #fff;
}

.footer-logo .logo-text span {
    font-size: 12px;
    color: #999;
}

.footer-desc {
    font-size: 14px;
    color: #999;
    line-height: 1.8;
}

.footer-col h4 {
    font-size: 16px;
    margin-bottom: 20px;
}

.footer-col ul {
    font-size: 14px;
    color: #999;
}

.footer-col li {
    padding: 8px 0;
}

.footer-col a {
    color: #999;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: #2196f3;
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 20px;
    text-align: center;
    font-size: 13px;
    color: #999;
}

.footer-bottom p {
    margin-bottom: 5px;
}

/* 在线客服 */
.online-service {
    position: fixed;
    right: 30px;
    bottom: 30px;
    z-index: 999;
}

.service-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 15px 25px;
    background: #2196f3;
    color: #fff;
    border-radius: 30px;
    font-size: 15px;
    cursor: pointer;
    box-shadow: 0 5px 20px rgba(33, 150, 243, 0.4);
    transition: all 0.3s;
}

.service-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(33, 150, 243, 0.5);
}

/* 产品页样式 */
.page-header {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    padding: 50px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 36px;
    color: #333;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 16px;
    color: #666;
}

.products-section {
    padding: 60px 0;
}

.products-detail {
    margin-bottom: 60px;
}

.products-detail:nth-child(even) {
    background: #f9f9f9;
    padding: 60px 0;
    margin: 0 -20px 60px;
    padding-left: 20px;
    padding-right: 20px;
}

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

.product-detail-content h3 {
    font-size: 28px;
    color: #333;
    margin-bottom: 20px;
}

.product-detail-content p {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.product-detail-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.product-detail-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    color: #333;
}

.product-detail-item::before {
    content: '✓';
    color: #2196f3;
    font-weight: bold;
}

.product-detail-image {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    border-radius: 16px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.product-detail-image span {
    font-size: 80px;
}

/* 价格页样式 */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    padding: 60px 0;
}

.pricing-card {
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    border: 2px solid #e0e0e0;
    transition: all 0.3s;
}

.pricing-card:hover,
.pricing-card.featured {
    border-color: #2196f3;
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(33, 150, 243, 0.2);
}

.pricing-card.featured {
    background: linear-gradient(135deg, #1976d2, #2196f3);
    color: #fff;
}

.pricing-card.featured .pricing-price,
.pricing-card.featured .pricing-period,
.pricing-card.featured .pricing-features li {
    color: #fff;
}

.pricing-title {
    font-size: 22px;
    margin-bottom: 20px;
}

.pricing-price {
    font-size: 48px;
    font-weight: bold;
    color: #2196f3;
}

.pricing-period {
    font-size: 14px;
    color: #666;
    margin-bottom: 30px;
}

.pricing-features {
    margin-bottom: 30px;
    text-align: left;
}

.pricing-features li {
    padding: 12px 0;
    font-size: 15px;
    color: #666;
    border-bottom: 1px solid #f0f0f0;
}

.pricing-features li::before {
    content: '✓';
    color: #2196f3;
    margin-right: 10px;
}

.pricing-btn {
    width: 100%;
    padding: 15px;
    background: #2196f3;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
}

.pricing-card.featured .pricing-btn {
    background: #fff;
    color: #2196f3;
}

.pricing-btn:hover {
    opacity: 0.9;
}

/* 关于页样式 */
.about-intro {
    padding: 80px 0;
}

.about-intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-intro-content h2 {
    font-size: 32px;
    color: #333;
    margin-bottom: 25px;
}

.about-intro-content p {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-image {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    border-radius: 16px;
    padding: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 350px;
}

.about-image span {
    font-size: 100px;
}

.team-section {
    padding: 60px 0;
    background: #f9f9f9;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.team-member {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
}

.team-avatar {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
}

.team-name {
    font-size: 18px;
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.team-position {
    font-size: 14px;
    color: #2196f3;
    margin-bottom: 15px;
}

.team-desc {
    font-size: 14px;
    color: #666;
}

/* 联系方式页样式 */
.contact-section {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 24px;
    color: #333;
    margin-bottom: 30px;
}

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

.contact-icon {
    width: 50px;
    height: 50px;
    background: #e3f2fd;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 5px;
}

.contact-text p {
    font-size: 14px;
    color: #666;
}

.contact-form {
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

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

.form-group label {
    display: block;
    font-size: 14px;
    color: #333;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
}

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

.form-submit {
    width: 100%;
    padding: 15px;
    background: #2196f3;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
}

.form-submit:hover {
    background: #1976d2;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .header-content {
        flex-wrap: wrap;
    }

    .nav {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: 15px;
        gap: 20px;
    }

    .banner-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .banner-btns {
        justify-content: center;
    }

    .features-grid,
    .products-grid,
    .cases-grid,
    .stats-grid,
    .pricing-grid,
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-intro-grid,
    .contact-grid,
    .product-detail-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .features-grid,
    .products-grid,
    .cases-grid,
    .stats-grid,
    .pricing-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

    .banner-text h2 {
        font-size: 28px;
    }

    .section-header h2 {
        font-size: 26px;
    }

    .product-detail-list {
        grid-template-columns: 1fr;
    }

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

    .footer-logo {
        justify-content: center;
    }
}