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

:root {
    --primary-color: #1a56db;
    --primary-dark: #1e429f;
    --secondary-color: #f97316;
    --secondary-light: #fdba74;
    --text-color: #333333;
    --light-text: #64748b;
    --bg-color: #ffffff;
    --light-bg: #f8fafc;
    --gray-bg: #e2e8f0;
    --border-color: #cbd5e1;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

/* 容器样式 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    display: inline-block;
    padding: 12px 24px;
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

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

/* 部分标题样式 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--primary-dark);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--light-text);
    max-width: 600px;
    margin: 0 auto;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 10px 0;
    background-color: rgba(255, 255, 255, 0.98);
}

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

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.logo i {
    margin-right: 10px;
    color: var(--secondary-color);
}

.nav-menu ul {
    display: flex;
    list-style: none;
}

.nav-menu li {
    margin-left: 30px;
}

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

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

.hamburger {
    display: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
}

/* 英雄区域样式 */
.hero {
    padding: 150px 0 100px;
    background-color: var(--light-bg);
    overflow: hidden;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hero-content {
    flex: 1;
    max-width: 500px;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--primary-dark);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: var(--light-text);
}

.cta-buttons {
    margin-bottom: 30px;
}

.cta-buttons .btn-primary {
    margin-right: 15px;
}

.social-links {
    display: flex;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--gray-bg);
    color: var(--text-color);
    border-radius: 50%;
    margin-right: 15px;
    transition: var(--transition);
}

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

.hero-image {
    flex: 1;
    max-width: 500px;
    margin-left: 50px;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.hero-image img:hover {
    transform: scale(1.03);
}

/* 产品特性样式 */
.features {
    padding: 100px 0;
}

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

.feature-card {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background-color: var(--light-bg);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

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

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

/* 产品展示样式 */
.products {
    padding: 100px 0;
    background-color: var(--light-bg);
}

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

.product-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.product-image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--secondary-color);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

.product-card h3 {
    font-size: 1.3rem;
    margin: 20px;
    color: var(--primary-dark);
}

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

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0 20px 20px;
}

.product-card .btn-primary {
    margin: 0 20px 20px;
    width: calc(100% - 40px);
    text-align: center;
}

/* 使用场景样式 */
.use-cases {
    padding: 100px 0;
}

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

.use-case-card {
    position: relative;
    height: 300px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.use-case-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.use-case-card:hover img {
    transform: scale(1.05);
}

.use-case-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: white;
}

.use-case-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

/* 技术规格样式 */
.specs {
    padding: 100px 0;
    background-color: var(--light-bg);
}

.specs-tabs {
    max-width: 800px;
    margin: 0 auto;
}

.tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.tab-btn {
    padding: 12px 24px;
    background-color: white;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:first-child {
    border-top-left-radius: 4px;
    border-bottom-left-radius: 4px;
}

.tab-btn:last-child {
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
}

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

.tab-content {
    display: none;
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.tab-content.active {
    display: block;
}

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

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.spec-label {
    font-weight: 500;
    color: var(--light-text);
}

.spec-value {
    font-weight: 600;
}

/* 客户评价样式 */
.testimonials {
    padding: 100px 0;
}

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

.testimonial-slide {
    display: none;
    background-color: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.testimonial-slide.active {
    display: block;
}

.rating {
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.testimonial-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 30px;
    color: var(--light-text);
}

.user-info {
    display: flex;
    align-items: center;
}

.user-info img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 15px;
}

.user-info h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.user-info p {
    font-size: 0.9rem;
    margin: 0;
    color: var(--light-text);
}

.slider-controls {
    display: flex;
    justify-content: center;
    margin-top: 30px;
}

.prev-slide, .next-slide {
    width: 40px;
    height: 40px;
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.prev-slide {
    margin-right: 15px;
}

.prev-slide:hover, .next-slide:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 常见问题样式 */
.faq {
    padding: 100px 0;
    background-color: var(--light-bg);
}

.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 15px;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: #f1f5f9;
}

.faq-question h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.faq-answer {
    padding: 0 20px 20px;
    display: none;
}

.faq-answer p {
    color: var(--light-text);
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

/* 联系我们样式 */
.contact {
    padding: 100px 0;
}

.contact-content {
    display: flex;
    justify-content: space-between;
    gap: 50px;
}

.contact-info {
    flex: 1;
}

.contact-item {
    display: flex;
    margin-bottom: 30px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: var(--light-bg);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-right: 20px;
    font-size: 1.2rem;
}

.contact-text h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--primary-dark);
}

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

.contact-form {
    flex: 1;
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
}

/* 页脚样式 */
.footer {
    background-color: var(--primary-dark);
    color: white;
    padding: 80px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.footer-logo {
    flex: 0 0 100%;
    margin-bottom: 30px;
}

.footer-logo a {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
    margin-bottom: 10px;
}

.footer-logo a i {
    margin-right: 10px;
    color: var(--secondary-color);
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    flex: 0 0 100%;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.footer-link-group {
    flex: 0 0 calc(33.33% - 20px);
    margin-bottom: 20px;
}

.footer-link-group h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-link-group h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--secondary-color);
}

.footer-link-group ul {
    list-style: none;
}

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

.footer-link-group a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link-group a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.footer-social {
    flex: 0 0 100%;
}

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

.footer-social .social-links {
    display: flex;
}

.footer-social .social-links a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    margin-right: 15px;
    transition: var(--transition);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 10px;
}

.footer-bottom-links {
    display: flex;
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-left: 20px;
    transition: var(--transition);
}

.footer-bottom-links a:hover {
    color: var(--secondary-color);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
}

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

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

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
        margin-bottom: 50px;
    }

    .hero-image {
        max-width: 100%;
        margin-left: 0;
    }

    .hero-content h1 {
        font-size: 2.8rem;
    }

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

    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .contact-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: white;
        transition: var(--transition);
        z-index: 999;
    }

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

    .nav-menu ul {
        flex-direction: column;
        align-items: center;
        padding: 50px 0;
    }

    .nav-menu li {
        margin: 15px 0;
    }

    .hamburger {
        display: block;
    }

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

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

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .footer-link-group {
        flex: 0 0 calc(50% - 20px);
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }

    .footer-link-group {
        flex: 0 0 100%;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-bottom-links a {
        margin: 10px 10px 0;
    }
}

/* 友情链接横向排列样式 */
.footer-friend-links {
    margin-top: 20px;
    text-align: center;
}

.footer-friend-links h3 {
    display: inline-block;
    margin-right: 15px;
    font-size: 16px;
    color: #666;
}

.footer-friend-links ul {
    display: inline-block;
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-friend-links ul li {
    display: inline-block;
    margin: 0 10px;
}

.footer-friend-links ul li a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-friend-links ul li a:hover {
    color: #1a56db;
}