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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 54, 93, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: #ffd700;
    font-weight: 700;
    font-size: 1.8rem;
}

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

.nav-menu > li {
    position: relative;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-menu a:hover {
    color: #ffd700;
}

.nav-menu > li > a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ffd700;
    transition: width 0.3s ease;
}

.nav-menu > li > a:hover::after {
    width: 100%;
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(26, 54, 93, 0.98);
    min-width: 200px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    list-style: none;
    padding: 10px 0;
    margin: 5px 0 0 0;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 12px 20px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 4px;
    margin: 0 8px;
}

.dropdown-menu a:hover {
    background: rgba(255, 215, 0, 0.1);
    color: #ffd700;
    transform: translateX(5px);
}

.dropdown-toggle i {
    font-size: 0.8em;
    transition: transform 0.3s ease;
}

.dropdown:hover .dropdown-toggle i {
    transform: rotate(180deg);
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* 英雄区域 */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.color-flow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #1a365d, #2d5aa0, #4299e1, #63b3ed);
    background-size: 400% 400%;
    animation: colorFlow 8s ease-in-out infinite;
}

@keyframes colorFlow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.textile-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255, 215, 0, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    animation: patternMove 12s linear infinite;
}

@keyframes patternMove {
    0% { transform: translateX(0) translateY(0); }
    100% { transform: translateX(-50px) translateY(-50px); }
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.title-line {
    display: block;
    opacity: 0;
    transform: translateY(50px);
    animation: titleSlideUp 1s ease-out forwards;
}

.title-line:nth-child(2) {
    animation-delay: 0.3s;
}

@keyframes titleSlideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.6s forwards;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.9s forwards;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffd700;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.cta-button {
    background: linear-gradient(45deg, #ff6b35, #ffd700);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0;
    animation: fadeInUp 1s ease-out 1.2s forwards;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    animation: fadeInUp 1s ease-out 1.5s forwards;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border: 2px solid white;
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) rotate(45deg); }
    40% { transform: translateY(-10px) rotate(45deg); }
    60% { transform: translateY(-5px) rotate(45deg); }
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 通用区域样式 */
section {
    padding: 100px 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a365d;
    margin-bottom: 1rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(45deg, #ff6b35, #ffd700);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们 */
.about {
    background: #f8fafc;
}

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

.about-text h3 {
    font-size: 1.5rem;
    color: #1a365d;
    margin-bottom: 1rem;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: #555;
    line-height: 1.8;
}

.business-list {
    list-style: none;
    margin-bottom: 2rem;
}

.business-list li {
    padding: 0.5rem 0;
    color: #555;
}

.business-list i {
    color: #ff6b35;
    margin-right: 10px;
}

.company-info {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.info-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.info-item i {
    color: #ff6b35;
    font-size: 1.2rem;
    margin-right: 15px;
    width: 20px;
}

.image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.about-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

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

.image-grid .about-img:first-child {
    grid-column: 1 / -1;
    height: 250px;
}

/* 业务范围 */
.services {
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.service-header i {
    font-size: 2rem;
    color: #ff6b35;
    margin-right: 15px;
}

.service-header h3 {
    font-size: 1.3rem;
    color: #1a365d;
    font-weight: 600;
}

.service-images {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 20px;
}

.service-images img {
    width: 100%;
    height: 80px;
    object-fit: cover;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.service-images img:hover {
    transform: scale(1.1);
}

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

/* 工艺流程 */
.process {
    background: linear-gradient(135deg, #1a365d 0%, #2d5aa0 100%);
    color: white;
}

.process .section-title {
    color: white;
}

.process .section-title::after {
    background: #ffd700;
}

.process .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.process-timeline {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #ffd700, #ff6b35);
    z-index: 1;
}

.process-step {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 2;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, #ff6b35, #ffd700);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0 auto 20px;
    color: white;
}

.step-content h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #ffd700;
}

.step-content p {
    margin-bottom: 15px;
    opacity: 0.9;
}

.step-content img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

/* 产品展示 */
.products {
    background: #f8fafc;
}

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

.product-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    height: 250px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.product-item:hover {
    transform: scale(1.05);
}

.product-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.product-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(26, 54, 93, 0.9));
    color: white;
    padding: 30px 20px 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.product-item:hover .product-overlay {
    transform: translateY(0);
}

.product-overlay h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: #ffd700;
}

/* 联系我们 */
.contact {
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateX(10px);
}

.contact-item i {
    font-size: 1.5rem;
    color: #ff6b35;
    margin-right: 20px;
    margin-top: 5px;
}

.contact-item h3 {
    color: #1a365d;
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.contact-item p {
    color: #666;
    margin: 0;
}

.contact-form {
    background: #f8fafc;
    padding: 40px;
    border-radius: 20px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ff6b35;
}

.submit-btn {
    background: linear-gradient(45deg, #ff6b35, #ffd700);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
}

/* 页脚 */
.footer {
    background: #1a365d;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    color: #ffd700;
    margin-bottom: 20px;
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.6;
}

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

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

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #ffd700;
}

.footer-section i {
    color: #ff6b35;
    margin-right: 10px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    opacity: 0.6;
}

/* 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: rgba(26, 54, 93, 0.95);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 20px 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .process-timeline {
        flex-direction: column;
        gap: 40px;
    }
    
    .process-timeline::before {
        display: none;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .step-content img {
        height: 150px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .service-images {
        grid-template-columns: 1fr;
    }
    
    .service-images img {
        height: 120px;
    }
    
    .products-gallery {
        grid-template-columns: 1fr;
    }
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(45deg, #ff6b35, #ffd700);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(45deg, #e55a2b, #e6c200);
}