/* 全局样式 */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #e74c3c;
    --accent-color: #3498db;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --text-color: #333;
    --text-light: #6c757d;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

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

ul {
    list-style: none;
}

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

.btn-primary {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
    text-align: center;
}

.btn-primary:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--secondary-color);
    padding: 12px 28px;
    border: 2px solid var(--secondary-color);
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-secondary:hover {
    background: rgba(231, 76, 60, 0.1);
    transform: translateY(-2px);
}

.section-title {
    font-size: 2.2rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--primary-color);
    position: relative;
}

.section-title:after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--secondary-color);
    margin: 10px auto;
    border-radius: 2px;
}

/* 面包屑导航 */
.breadcrumb {
    background: #f1f5f9;
    padding: 12px 0;
    font-size: 0.9rem;
}

.breadcrumb ol {
    display: flex;
    align-items: center;
}

.breadcrumb li:not(:last-child):after {
    content: '/';
    margin: 0 8px;
    color: var(--text-light);
}

.breadcrumb a {
    color: var(--accent-color);
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* 顶部导航栏 */
.header {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

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

.logo-icon {
    width: 50px;
    height: 50px;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin: 0 0 0 10px;
    font-weight: 700;
}

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

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

.main-nav ul li a {
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

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

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

.mobile-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    width: 30px;
    height: 25px;
    justify-content: space-between;
}

.mobile-toggle span {
    display: block;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Hero区域 */
.hero {
    background: linear-gradient(rgba(44, 62, 80, 0.85), rgba(44, 62, 80, 0.9)), url('/assets/hero-bg.jpg') center/cover no-repeat;
    color: white;
    padding: 100px 0;
    text-align: center;
    position: relative;
}

.hero:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.1) 0%, rgba(231, 76, 60, 0.1) 100%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.4rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

/* 轮播图区域 */
.carousel-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.carousel-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.carousel {
    display: flex;
    transition: transform 0.5s ease;
}

.carousel-slide {
    min-width: 100%;
    display: none;
    position: relative;
}

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

.carousel-slide img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    display: block;
}

.slide-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 30px;
    backdrop-filter: blur(5px);
}

.slide-content h3 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.carousel-controls {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    transform: translateY(-50%);
    z-index: 10;
    padding: 0 20px;
}

.carousel-controls button {
    background: rgba(231, 76, 60, 0.9);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    font-size: 24px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.carousel-controls button:hover {
    background: var(--secondary-color);
    transform: scale(1.1);
}

.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 10px;
    z-index: 10;
}

.indicator {
    display: inline-block;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition);
}

.indicator.active {
    background: var(--secondary-color);
    transform: scale(1.2);
}

/* 产品区域 */
.products, .solutions, .contact {
    padding: 80px 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

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

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

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

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

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

.product-content {
    padding: 25px;
}

.product-content h3 {
    font-size: 1.6rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.product-link {
    display: inline-block;
    color: var(--accent-color);
    font-weight: 600;
    margin-top: 15px;
    position: relative;
}

.product-link:after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-color);
    transition: var(--transition);
}

.product-link:hover:after {
    width: 100%;
}

/* 解决方案区域 */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.solution-card {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    border-radius: var(--radius);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.solution-card:before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.1) 0%, transparent 70%);
    z-index: -1;
}

.solution-card:hover {
    transform: scale(1.05);
    background: linear-gradient(135deg, #34495e 0%, #2c3e50 100%);
}

.solution-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.solution-card h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

/* 联系区域 */
.contact-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px;
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.contact-info p {
    margin-bottom: 25px;
    font-size: 1.1rem;
    line-height: 1.8;
}

.contact-info ul {
    margin: 25px 0;
}

.contact-info li {
    margin-bottom: 12px;
    font-size: 1.1rem;
    padding-left: 30px;
    position: relative;
}

.contact-info li:before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

.certifications {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    justify-content: center;
}

.certifications img {
    height: 60px;
    filter: grayscale(100%) opacity(0.7);
    transition: var(--transition);
}

.certifications img:hover {
    filter: grayscale(0%) opacity(1);
    transform: scale(1.05);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    border-color: var(--accent-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.contact-form button {
    width: 100%;
    margin-top: 10px;
    font-size: 1.1rem;
    padding: 15px;
}

/* 关于页面样式 */
.hero-about {
    background: linear-gradient(rgba(44, 62, 80, 0.9), rgba(44, 62, 80, 0.95)), url('/assets/about-bg.jpg') center/cover no-repeat;
    padding: 80px 0;
}

.about-section {
    padding: 80px 0;
}

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

.about-image img {
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    width: 100%;
    border: 5px solid white;
}

.milestones {
    margin-top: 40px;
    position: relative;
    padding-left: 30px;
}

.milestones:before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    bottom: 10px;
    width: 3px;
    background: var(--accent-color);
}

.milestone {
    display: flex;
    margin-bottom: 30px;
    position: relative;
    padding-left: 25px;
}

.milestone:before {
    content: '';
    position: absolute;
    left: -7px;
    top: 5px;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--secondary-color);
    border: 3px solid white;
    box-shadow: 0 0 0 2px var(--accent-color);
}

.year {
    font-weight: 700;
    color: var(--secondary-color);
    font-size: 1.4rem;
    min-width: 70px;
}

.mission-section {
    background: #f1f5f9;
    padding: 80px 0;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.mission-card {
    background: white;
    border-radius: var(--radius);
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--accent-color);
}

.mission-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.mission-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.team-section {
    padding: 80px 0;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.team-member {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.member-photo {
    height: 300px;
    overflow: hidden;
}

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

.team-member:hover .member-photo img {
    transform: scale(1.05);
}

.team-member h3 {
    font-size: 1.5rem;
    margin: 15px 0 5px;
    color: var(--primary-color);
}

.role {
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 15px;
}

.certifications-section {
    background: #f8f9fa;
    padding: 80px 0;
    text-align: center;
}

.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.cert-item {
    background: white;
    border-radius: var(--radius);
    padding: 30px 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.cert-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.cert-item img {
    height: 80px;
    margin-bottom: 20px;
    filter: grayscale(100%);
    transition: var(--transition);
}

.cert-item:hover img {
    filter: grayscale(0%);
    transform: scale(1.1);
}

.cert-item h3 {
    font-size: 1.6rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

/* 页脚 */
.footer {
    background: var(--primary-color);
    color: rgba(255, 255, 255, 0.85);
    padding: 70px 0 40px;
    position: relative;
    overflow: hidden;
}

.footer:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h2,
.footer-col h3 {
    color: white;
    margin-bottom: 20px;
    font-size: 1.5rem;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--secondary-color);
}

.footer-col p {
    margin-bottom: 15px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.8);
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
    position: relative;
    padding-left: 15px;
}

.footer-col ul li a:before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    opacity: 0;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: white;
    padding-left: 20px;
}

.footer-col ul li a:hover:before {
    opacity: 1;
}

.contact-links li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 10px;
    line-height: 1.6;
}

.contact-links li i {
    position: absolute;
    left: 0;
    top: 3px;
    color: var(--accent-color);
    font-size: 1.2rem;
}

.social-links {
    display: flex;
    gap: 15px;
    margin: 20px 0;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1.3rem;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.social-links a:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.newsletter {
    display: flex;
    margin-top: 15px;
}

.newsletter input {
    flex: 1;
    padding: 12px 15px;
    border: none;
    border-radius: 4px 0 0 4px;
    font-size: 0.95rem;
}

.newsletter button {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 0 15px;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

.newsletter button:hover {
    background: #c0392b;
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
}

.sitemap-link {
    color: var(--accent-color);
    margin-left: 8px;
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .section-title {
        font-size: 1.9rem;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 85%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        padding: 40px 30px;
        box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        z-index: 999;
        overflow-y: auto;
    }
    
    .main-nav.active {
        left: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
    }
    
    .main-nav ul li {
        margin: 0 0 25px 0;
    }
    
    .main-nav ul li a {
        font-size: 1.4rem;
        font-weight: 600;
    }
    
    .hero h1 {
        font-size: 2.3rem;
    }
    
    .hero p {
        font-size: 1.15rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-secondary {
        margin-left: 0;
        margin-top: 15px;
    }
    
    .carousel-slide img {
        height: 350px;
    }
    
    .slide-content {
        padding: 20px;
    }
    
    .slide-content h3 {
        font-size: 1.6rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 0;
    }
    
    .hero h1 {
        font-size: 1.9rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .carousel-slide img {
        height: 280px;
    }
    
    .product-card, .solution-card {
        max-width: 100%;
    }
    
    .contact-form input,
    .contact-form select,
    .contact-form textarea {
        padding: 12px;
    }
    
    .copyright p {
        font-size: 0.85rem;
        line-height: 1.5;
    }
    
    .copyright br {
        display: none;
    }
}