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

:root {
    --primary-color: #0066cc;
    --secondary-color: #ff6600;
    --dark-color: #1a1a1a;
    --light-color: #f5f5f5;
    --text-color: #333;
    --border-color: #ddd;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo h1 {
    font-size: 28px;
    font-weight: bold;
    margin: 0;
    letter-spacing: 2px;
}

.logo-subtitle {
    font-size: 12px;
    letter-spacing: 3px;
    opacity: 0.9;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 5px;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    padding: 12px 20px;
    display: block;
    transition: all 0.3s;
    border-radius: 5px;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    background: white;
    min-width: 200px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    border-radius: 5px;
    top: 100%;
    left: 0;
    z-index: 1001;
}

.dropdown-content a {
    color: var(--text-color);
    padding: 12px 20px;
    text-decoration: none;
    display: block;
    transition: all 0.3s;
}

.dropdown-content a:hover {
    background: var(--light-color);
    color: var(--primary-color);
    transform: translateX(5px);
}

.dropdown:hover .dropdown-content {
    display: block;
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 英雄区域 */
.hero {
    position: relative;
    height: 600px;
    overflow: hidden;
}

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

.hero-slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    z-index: 2;
    width: 80%;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 1;
}

.hero-title {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    animation: slideInDown 1s;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 30px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
    animation: slideInUp 1s;
}

@keyframes slideInDown {
    from { opacity: 0; transform: translateY(-50px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInUp {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}

.btn-primary {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: bold;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(255,102,0,0.3);
}

.btn-primary:hover {
    background: #ff8533;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255,102,0,0.4);
}

.slider-controls {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    transform: translateY(-50%);
    z-index: 3;
}

.slider-btn {
    background: rgba(255,255,255,0.3);
    border: none;
    color: white;
    font-size: 40px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
}

.slider-btn:hover {
    background: rgba(255,255,255,0.5);
    transform: scale(1.1);
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s;
}

.dot.active,
.dot:hover {
    background: white;
    transform: scale(1.2);
}

/* 公司简介 */
.intro {
    padding: 80px 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 42px;
    color: var(--dark-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--secondary-color);
}

.section-subtitle {
    font-size: 18px;
    color: #666;
    margin-top: 20px;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-text h3 {
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.intro-text p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
    text-align: justify;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: var(--light-color);
    border-radius: 10px;
    transition: all 0.3s;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.stat-item h4 {
    font-size: 36px;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.stat-item p {
    font-size: 14px;
    color: #666;
}

.intro-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    transition: all 0.3s;
}

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

/* 产品展示 */
.products {
    padding: 80px 0;
    background: var(--light-color);
}

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

.product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

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

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.5s;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,102,204,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s;
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.btn-secondary {
    display: inline-block;
    background: white;
    color: var(--primary-color);
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: var(--secondary-color);
    color: white;
    transform: scale(1.1);
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    font-size: 22px;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.product-info p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 技术优势 */
.advantages {
    padding: 80px 0;
    background: white;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.advantage-item {
    text-align: center;
    padding: 40px 30px;
    background: var(--light-color);
    border-radius: 15px;
    transition: all 0.3s;
}

.advantage-item:hover {
    background: white;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transform: translateY(-10px);
}

.advantage-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.advantage-item h3 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.advantage-item p {
    font-size: 15px;
    color: #666;
    line-height: 1.6;
}

/* 生产车间展示 */
.workshop {
    padding: 80px 0;
    background: var(--light-color);
}

.workshop-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.gallery-item {
    position: relative;
    height: 300px;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.5s;
}

.gallery-item:hover img {
    transform: scale(1.2) rotate(2deg);
}

/* 团队展示 */
.team {
    padding: 80px 0;
    background: white;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.team-card {
    text-align: center;
    background: var(--light-color);
    border-radius: 15px;
    padding: 30px;
    transition: all 0.3s;
}

.team-card:hover {
    background: white;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transform: translateY(-10px);
}

.team-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 20px;
}

.team-card h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.team-card p {
    font-size: 15px;
    color: #666;
}

/* 联系CTA */
.contact-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    text-align: center;
}

.contact-cta h2 {
    font-size: 42px;
    margin-bottom: 20px;
}

.contact-cta p {
    font-size: 20px;
    margin-bottom: 40px;
}

/* 页脚 */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 24px;
    margin-bottom: 20px;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.footer-section p {
    font-size: 14px;
    line-height: 1.8;
    color: #ccc;
}

.footer-year {
    color: var(--secondary-color);
    font-weight: bold;
    margin-top: 10px;
}

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

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

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: all 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #333;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantage-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .intro-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 0;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .product-grid,
    .advantage-grid,
    .team-grid,
    .workshop-gallery {
        grid-template-columns: 1fr;
    }
    
    .intro-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* 页面特定样式 */
.page-header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 100px 0 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.page-header p {
    font-size: 20px;
    opacity: 0.9;
}

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

.image-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.image-grid img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.image-grid img:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.feature-item {
    background: var(--light-color);
    padding: 30px;
    border-radius: 10px;
    border-left: 4px solid var(--secondary-color);
}

.feature-item h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 20px;
}

.feature-item p {
    color: #666;
    line-height: 1.8;
}

.contact-info {
    background: var(--light-color);
    padding: 40px;
    border-radius: 15px;
    margin-top: 40px;
}

.contact-info h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 24px;
}

.contact-info p {
    font-size: 16px;
    line-height: 2;
    color: var(--text-color);
}

.contact-info strong {
    color: var(--secondary-color);
    display: inline-block;
    width: 100px;
}