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

body {
    font-family: 'Noto Sans SC', 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 */
.header {
    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;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

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

.logo-image {
    height: 50px;
    width: auto;
    transition: all 0.3s ease;
}

.logo-image:hover {
    transform: scale(1.05);
}

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

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-menu a i {
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.nav-menu a:hover {
    color: #8B0000;
}

.nav-menu a:hover i {
    color: #8B0000;
    transform: scale(1.1);
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: #8B0000;
    cursor: pointer;
    transition: all 0.3s ease;
}

.menu-toggle:hover {
    color: #6B0000;
    transform: scale(1.1);
}

.contact-info .phone {
    color: #8B0000;
    font-weight: 500;
    font-size: 1.1rem;
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('assets/images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    margin-top: 70px;
}

.hero-content h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: #8B0000;
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    border-radius: 50px;
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.cta-btn:hover {
    background-color: #6B0000;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(139, 0, 0, 0.3);
}

/* 通用章节样式 */
section {
    padding: 5rem 0;
}

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

.section-title h3 {
    font-size: 2rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1rem;
}

.divider {
    width: 80px;
    height: 3px;
    background-color: #8B0000;
    margin: 0 auto;
}

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

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

.about-text h4 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1.5rem;
}

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

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-box {
    width: 400px;
    height: 300px;
    background: linear-gradient(135deg, #8B0000, #A52A2A);
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

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

.product-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    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: 200px;
    background: linear-gradient(135deg, #f0f0f0, #e0e0e0);
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.product-card h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1rem;
}

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

/* 服务保障样式 */
.services {
    background-color: #fff;
}

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

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

.service-card:hover {
    background-color: #e9ecef;
    transform: translateY(-3px);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.service-card h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1rem;
}

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

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

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

.contact-info h4,
.contact-form h4 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 2rem;
}

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

.contact-info strong {
    color: #333;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #8B0000;
    box-shadow: 0 0 0 3px rgba(139, 0, 0, 0.1);
}

.submit-btn {
    background-color: #8B0000;
    color: #fff;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background-color: #6B0000;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(139, 0, 0, 0.3);
}

/* 页脚样式 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 3rem 0 1.5rem;
}

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

.footer-logo h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-logo p {
    color: #ccc;
}

.footer-bottom a {
    color: #ccc;
    text-decoration: none;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

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

.footer-links li {
    margin-bottom: 1rem;
}

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

.footer-links a:hover {
    color: #8B0000;
}

.footer-contact p {
    margin-bottom: 1rem;
    color: #ccc;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    color: #ccc;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 1rem;
        padding: 1rem;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: #fff;
        flex-direction: column;
        gap: 0.8rem;
        text-align: center;
        width: 100%;
        padding: 0 1rem;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        max-height: 0;
        overflow: hidden;
        transition: all 0.3s ease;
        border-radius: 0 0 10px 10px;
    }
    
    .nav-menu.active {
        max-height: 500px;
        padding: 1rem;
        margin-top: 0.5rem;
    }
    
    .nav-menu a {
        justify-content: center;
        padding: 0.8rem;
        border-radius: 8px;
    }
    
    .contact-info {
        display: none;
    }
    
    .hero-content h2 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1.2rem;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .image-box {
        width: 100%;
        max-width: 400px;
        height: 250px;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .service-grid {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: 3rem 0;
    }
    
    .contact-info {
        margin-top: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .section-title h3 {
        font-size: 1.5rem;
    }
    
    .about-text h4,
    .contact-info h4,
    .contact-form h4 {
        font-size: 1.3rem;
    }
    
    .image-box {
        height: 200px;
    }
    
    .nav-menu {
        gap: 0.6rem;
    }
    
    .logo-image {
        height: 40px;
    }
}