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

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

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

/* 导航栏样式 */
.navbar {
    background: white;
    padding: 0.8rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
    border-bottom: 1px solid #f0f0f0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.logo-image {
    width: 40px;
    height: 40px;
    border-radius: 6px;
    object-fit: cover;
}

.nav-logo h2 {
    color: #d32f2f;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

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

.nav-link {
    color: #2d3748;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-size: 0.95rem;
}

.nav-link:hover {
    color: #d32f2f;
    background-color: rgba(211, 47, 47, 0.08);
    transform: translateY(-1px);
}

.nav-link.active {
    color: #d32f2f;
    background-color: rgba(211, 47, 47, 0.12);
    font-weight: 600;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
}

.bar {
    width: 22px;
    height: 2px;
    background-color: #2d3748;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.hamburger:hover .bar {
    background-color: #d32f2f;
}

/* 轮播图样式 */
.hero-slider {
    margin-top: 70px;
    position: relative;
    height: 600px;
    overflow: hidden;
}

.slider-container {
    height: 100%;
    position: relative;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide.active {
    opacity: 1;
}

.slide-content {
    position: relative;
    z-index: 3;
    color: white;
    text-align: center;
    max-width: 800px;
    padding: 2rem;
}

.slide-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.7);
    font-weight: bold;
}

.slide-content p {
    font-size: 1.4rem;
    margin-bottom: 2.5rem;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.7);
    line-height: 1.6;
}

.slide-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: 1;
}

.slide-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(211, 47, 47, 0.8) 0%, rgba(183, 28, 28, 0.9) 100%);
    z-index: 2;
}

.cta-button {
    display: inline-block;
    background: white;
    color: #d32f2f;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 25px;
    font-weight: bold;
    transition: all 0.3s ease;
    border: 2px solid white;
}

.cta-button:hover {
    background: transparent;
    color: white;
}

.slider-controls {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    transform: translateY(-50%);
    z-index: 10;
}

.prev-btn, .next-btn {
    background: rgba(255,255,255,0.8);
    border: none;
    padding: 1rem;
    cursor: pointer;
    font-size: 1.5rem;
    color: #d32f2f;
    transition: background 0.3s ease;
}

.prev-btn:hover, .next-btn:hover {
    background: white;
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

/* 服务特色样式 */
.features {
    padding: 4rem 0;
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: #d32f2f;
    margin-bottom: 3rem;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: #d32f2f;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* 关于我们样式 */
.about {
    padding: 4rem 0;
    background: linear-gradient(135deg, #d32f2f 0%, #b71c1c 100%);
    color: white;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.about-content p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

/* 公司图片样式 - 横向排版 */
.company-images {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 3rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.company-image {
    text-align: center;
    max-width: 400px;
    position: relative;
    flex: 1;
    min-width: 300px;
}

.about-image {
    width: auto;
    max-width: 400px;
    max-height: 320px;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.25);
    transition: all 0.4s ease;
    border: 3px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.05);
}

.about-image:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.3);
    border-color: rgba(255,255,255,0.3);
}

.company-image::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    border-radius: 20px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.company-image:hover::before {
    opacity: 1;
}

.company-image p {
    margin-top: 1.2rem;
    color: rgba(255,255,255,0.95);
    font-weight: 600;
    font-size: 1.2rem;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
}

.company-image:hover p {
    color: #ffffff;
}


/* 页脚样式 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h3,
.footer-section h4 {
    color: #d32f2f;
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ecf0f1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #d32f2f;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.1);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-slider {
        height: 400px;
    }
    
    .slide-content h1 {
        font-size: 2rem;
    }
    
    .slide-content p {
        font-size: 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .company-images {
        gap: 2rem;
        margin-top: 2rem;
        flex-direction: row;
        justify-content: center;
    }
    
    .company-image {
        max-width: 45%;
        min-width: 200px;
        flex: 1;
    }
    
    .about-image {
        max-width: 100%;
        max-height: 260px;
        height: auto;
        border-radius: 10px;
    }
    
    .company-image p {
        font-size: 1.1rem;
        margin-top: 1rem;
    }
    
}

@media (max-width: 480px) {
    .hero-slider {
        height: 300px;
    }
    
    .slide-content h1 {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 15px;
    }
}