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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 导航栏样式 */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo h1 {
    color: #ff6600;
    font-size: 1.8rem;
    font-weight: 700;
}

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

.nav-links li {
    margin-left: 20px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 8px 12px;
    border-radius: 5px;
}

.nav-links a:hover {
    color: #ff6600;
    background-color: #f5f5f5;
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    color: #333;
    cursor: pointer;
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, #ff6600 0%, #ff9900 100%);
    color: #fff;
    padding: 120px 0 80px;
    text-align: center;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-btn {
    display: inline-block;
    background-color: #fff;
    color: #ff6600;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* 通用区块样式 */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #333;
    font-weight: 700;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: #ff6600;
    border-radius: 2px;
}

/* 关于我们样式 */
.about {
    padding: 100px 0;
    background-color: #fff;
}

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

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #333;
}

.about-text p {
    margin-bottom: 20px;
    color: #666;
    line-height: 1.8;
}

.timeline {
    list-style: none;
    margin-top: 30px;
}

.timeline li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 15px;
    color: #666;
}

.timeline li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 12px;
    height: 12px;
    background-color: #ff6600;
    border-radius: 50%;
}

.timeline li span {
    font-weight: 600;
    color: #333;
}

.about-image {
    flex: 1;
}

.image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
    color: #ff6600;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 产品中心样式 */
.products {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.product-categories {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.category h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: #333;
    border-bottom: 2px solid #ff6600;
    padding-bottom: 10px;
    display: inline-block;
}

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

.product-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.product-image {
    width: 100%;
    height: 150px;
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: #ff6600;
    margin-bottom: 20px;
}

.product-card h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #333;
}

.product-card p {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.price {
    display: inline-block;
    background-color: #ff6600;
    color: #fff;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 1.1rem;
}

/* 服务优势样式 */
.services {
    padding: 100px 0;
    background-color: #fff;
}

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

.service-card {
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.service-card:hover {
    background-color: #fff;
    border-color: #ff6600;
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #ff6600 0%, #ff9900 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: #fff;
    margin: 0 auto 20px;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #333;
}

.service-card p {
    color: #666;
    line-height: 1.6;
}

/* 联系我们样式 */
.contact {
    padding: 100px 0;
    background-color: #f8f9fa;
}

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

.contact-info {
    flex: 1;
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

.info-item i {
    font-size: 1.8rem;
    color: #ff6600;
    margin-top: 5px;
}

.info-item h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: #333;
}

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

.contact-form {
    flex: 1;
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    color: #333;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ff6600;
    box-shadow: 0 0 0 3px rgba(255, 102, 0, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.submit-btn {
    background: linear-gradient(135deg, #ff6600 0%, #ff9900 100%);
    color: #fff;
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px;
    margin-bottom: 30px;
}

.footer-info h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #ff6600;
}

.footer-info p {
    color: #ccc;
    line-height: 1.6;
}

.footer-links h4,
.footer-social h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #fff;
}

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

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

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #ff6600;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #444;
    color: #fff;
    border-radius: 50%;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background-color: #ff6600;
    transform: translateY(-3px);
}

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

/* 响应式设计 */
@media (max-width: 992px) {
    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        flex-direction: column;
        background-color: #fff;
        width: 250px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        padding: 20px;
        gap: 15px;
    }

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

    .hamburger {
        display: block;
    }

    .hero-content h2 {
        font-size: 2.5rem;
    }

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

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

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

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

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

@media (max-width: 768px) {
    .hero {
        padding: 100px 0 60px;
    }

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

    .hero-content p {
        font-size: 1rem;
    }

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

    .about,
    .products,
    .services,
    .contact {
        padding: 80px 0;
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .social-icons {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-content h2 {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .about,
    .products,
    .services,
    .contact {
        padding: 60px 0;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 导航栏滚动效果 */
.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.15);
}