/* 全局样式 */
:root {
    --primary-color: #0066cc;
    --secondary-color: #ff6600;
    --accent-color: #00cc99;
    --dark-color: #333333;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
    --light-gray: #e9ecef;
    --white-color: #ffffff;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--white-color);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--dark-color);
    position: relative;
    display: inline-block;
}

.section-header h2:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background-color: var(--secondary-color);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-color);
    max-width: 700px;
    margin: 0 auto;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: #0055aa;
    color: var(--white-color);
    transform: translateY(-3px);
    box-shadow: var(--box-shadow);
}

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

.btn-secondary:hover {
    background-color: #e55500;
    color: var(--white-color);
    transform: translateY(-3px);
    box-shadow: var(--box-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: var(--white-color);
    transform: translateY(-3px);
    box-shadow: var(--box-shadow);
}

/* 导航栏 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

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

.logo img {
    height: 40px;
}

nav ul {
    display: flex;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: var(--dark-color);
    font-weight: 500;
    padding: 5px 0;
    position: relative;
}

nav ul li a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

nav ul li a:hover:after,
nav ul li a.active:after {
    width: 100%;
}

.nav-buttons {
    display: flex;
    gap: 10px;
}

.nav-buttons .btn {
    padding: 8px 20px;
}

/* 英雄区域 */
.hero {
    padding: 150px 0 100px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
    overflow: hidden;
}

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

.hero-content {
    flex: 1;
    padding-right: 50px;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--dark-color);
    line-height: 1.2;
}

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

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

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    animation: float 6s ease-in-out infinite;
}

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

/* 产品系列 */
.products {
    padding: 100px 0;
    background-color: var(--white-color);
}

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

.category {
    background-color: var(--light-color);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.category:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.category-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-color);
    font-size: 2rem;
}

.category h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.category p {
    margin-bottom: 20px;
    color: var(--gray-color);
}

/* 特色产品 */
.featured-products {
    padding: 100px 0;
    background-color: var(--light-color);
}

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

.product-card {
    background-color: var(--white-color);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.product-image {
    height: 200px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-color);
}

.product-image img {
    max-height: 100%;
    transition: var(--transition);
}

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

.product-info {
    padding: 20px;
}

.product-info h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.product-info p {
    margin-bottom: 15px;
    color: var(--gray-color);
    font-size: 0.9rem;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* 技术创新 */
.technology {
    padding: 100px 0;
    background-color: var(--white-color);
}

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

.tech-feature {
    text-align: center;
    padding: 30px;
    border-radius: 10px;
    transition: var(--transition);
    background-color: var(--light-color);
    box-shadow: var(--box-shadow);
}

.tech-feature:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.tech-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-color);
    font-size: 1.8rem;
}

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

.tech-feature p {
    color: var(--gray-color);
}

/* 教学培训 */
.training {
    padding: 100px 0;
    background-color: var(--light-color);
}

.training-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.training-image {
    flex: 1;
    text-align: center;
}

.training-info {
    flex: 1;
}

.training-info h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.training-info p {
    margin-bottom: 20px;
    color: var(--gray-color);
}

.training-features {
    margin-bottom: 30px;
}

.training-features li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.training-features li i {
    color: var(--accent-color);
    margin-right: 10px;
}

/* 关于我们 */
.about {
    padding: 100px 0;
    background-color: var(--white-color);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-info {
    flex: 1;
}

.about-info p {
    margin-bottom: 20px;
    color: var(--gray-color);
}

.about-stats {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-label {
    color: var(--gray-color);
    font-size: 1rem;
}

.about-image {
    flex: 1;
    text-align: center;
}

/* 客户评价 */
.testimonials {
    padding: 100px 0;
    background-color: var(--light-color);
}

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

.testimonial {
    background-color: var(--white-color);
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.testimonial:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.testimonial-content {
    margin-bottom: 20px;
}

.testimonial-content p {
    font-style: italic;
    color: var(--gray-color);
    position: relative;
}

.testimonial-content p:before,
.testimonial-content p:after {
    content: '"';
    font-size: 1.5rem;
    color: var(--primary-color);
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-right: 15px;
    object-fit: cover;
}

.author-info h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.author-info p {
    font-size: 0.9rem;
    color: var(--gray-color);
}

/* 技术支持 */
.support {
    padding: 100px 0;
    background-color: var(--white-color);
}

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

.support-option {
    text-align: center;
    padding: 30px;
    border-radius: 10px;
    background-color: var(--light-color);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.support-option:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.support-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background-color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-color);
    font-size: 1.8rem;
}

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

.support-option p {
    margin-bottom: 20px;
    color: var(--gray-color);
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background-color: var(--light-color);
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

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

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

.contact-text h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--dark-color);
}

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

.social-media {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-icon {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-color);
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-icon:hover {
    background-color: var(--secondary-color);
    transform: translateY(-5px);
}

.contact-form form {
    background-color: var(--white-color);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--box-shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--dark-color);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--light-gray);
    border-radius: 5px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.2);
}

/* 页脚 */
footer {
    background-color: var(--dark-color);
    color: var(--white-color);
    padding: 80px 0 30px;
}

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

.footer-logo img {
    height: 40px;
    margin-bottom: 20px;
}

.footer-logo p {
    color: var(--light-gray);
    max-width: 300px;
}

.footer-links {
    display: flex;
    gap: 50px;
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--white-color);
    position: relative;
}

.footer-column h3:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--secondary-color);
}

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

.footer-column ul li a {
    color: var(--light-gray);
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright p {
    color: var(--light-gray);
}

.footer-nav {
    display: flex;
    gap: 20px;
}

.footer-nav a {
    color: var(--light-gray);
    transition: var(--transition);
}

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

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .training-content,
    .about-content {
        flex-direction: column;
    }
    
    .training-image,
    .about-image {
        margin-bottom: 30px;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-logo {
        margin-bottom: 30px;
    }
    
    .footer-links {
        flex-wrap: wrap;
    }
    
    .footer-column {
        flex: 1 0 calc(50% - 25px);
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }
    
    .logo {
        margin-bottom: 15px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        margin-bottom: 15px;
    }
    
    .hero .container {
        flex-direction: column;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 50px;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .copyright {
        margin-bottom: 15px;
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .footer-column {
        flex: 1 0 100%;
    }
    
    .footer-links {
        gap: 0;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 20px;
    }
}