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

/* 移动端优化 */
@media (hover: none) and (pointer: coarse) {
    /* 触摸设备优化 */
    .btn,
    .category-btn,
    .lang-btn,
    .read-more,
    .nav ul li a {
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }
    
    /* 增大触摸区域 */
    .btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .category-btn {
        min-height: 40px;
    }
    
    .lang-btn {
        min-height: 36px;
    }
}

body {
    font-family: 'Noto Sans', 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden; /* 防止横向滚动 */
}

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

/* 顶部导航 */
.header {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    gap: 20px;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #2c3e50;
    font-size: 24px;
    font-weight: 700;
}

.logo i {
    color: #e74c3c;
    margin-right: 10px;
    font-size: 28px;
}

.logo-img {
    height: 36px;
    width: auto;
    margin-right: 10px;
    border-radius: 4px;
}

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

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

.nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav ul li a:hover {
    color: #e74c3c;
}

.contact-info span {
    display: flex;
    align-items: center;
    color: #e74c3c;
    font-weight: 500;
}

.contact-info i {
    margin-right: 5px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.language-switch {
    display: flex;
    background: #f5f5f5;
    border-radius: 20px;
    padding: 3px;
}

.lang-btn {
    padding: 8px 15px;
    border: none;
    background: transparent;
    border-radius: 15px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: #666;
    transition: all 0.3s;
}

.lang-btn:hover {
    color: #e74c3c;
}

.lang-btn.active {
    background: #e74c3c;
    color: #fff;
}

/* 首页轮播 */
.hero {
    margin-top: 70px;
    position: relative;
    height: 600px;
    overflow: hidden;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.slide.active {
    opacity: 1;
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 10%;
    transform: translateY(-50%);
    z-index: 2;
}

.slide-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.slide-logo {
    height: 40px;
    width: auto;
    border-radius: 4px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.slide-brand-name {
    font-size: 28px;
    font-weight: 700;
    color: #2c3e50;
    letter-spacing: 4px;
    text-transform: uppercase;
}

.slide-content h1 {
    font-size: 48px;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 700;
}

.slide-content p {
    font-size: 20px;
    color: #666;
    margin-bottom: 30px;
}

.slide-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* 图片响应式优化 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

.slide-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    z-index: 3;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid #fff;
}

.indicator:hover,
.indicator.active {
    background: #e74c3c;
    transform: scale(1.2);
}

/* 移动端轮播指示器优化 */
@media (max-width: 768px) {
    .slide-indicators {
        bottom: 20px;
    }
    
    .indicator {
        width: 10px;
        height: 10px;
    }
}

@media (max-width: 480px) {
    .slide-indicators {
        bottom: 15px;
        gap: 10px;
    }
    
    .indicator {
        width: 8px;
        height: 8px;
    }
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: #e74c3c;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.4);
}

/* 通用区块样式 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    color: #2c3e50;
    margin-bottom: 15px;
    position: relative;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #e74c3c;
}

.section-header p {
    font-size: 16px;
    color: #666;
}

/* 关于我们 */
.about {
    padding: 100px 0;
    background: #f8f9fa;
}

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

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.about-text h3 {
    font-size: 28px;
    color: #2c3e50;
    margin-bottom: 20px;
}

.about-text p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.stats {
    display: flex;
    gap: 40px;
    margin-top: 30px;
}

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

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: #e74c3c;
}

.stat-label {
    display: block;
    font-size: 14px;
    color: #666;
}

/* 产品中心 */
.products {
    padding: 100px 0;
}

.product-categories {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.category-btn {
    padding: 10px 25px;
    border: 2px solid #ddd;
    background: #fff;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

.category-btn:hover,
.category-btn.active {
    background: #e74c3c;
    border-color: #e74c3c;
    color: #fff;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

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

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

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

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

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

.product-info {
    padding: 20px;
}

.product-info h3 {
    font-size: 18px;
    color: #2c3e50;
    margin-bottom: 8px;
}

.product-info p {
    font-size: 14px;
    color: #999;
    margin-bottom: 10px;
}

.product-info .price {
    font-size: 20px;
    font-weight: 700;
    color: #e74c3c;
}

/* 新闻动态 */
.news {
    padding: 100px 0;
    background: #f8f9fa;
}

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

.news-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.news-card:hover {
    transform: translateY(-3px);
}

.news-image {
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-content {
    padding: 20px;
}

.news-date {
    display: inline-block;
    font-size: 14px;
    color: #e74c3c;
    margin-bottom: 10px;
}

.news-content h3 {
    font-size: 18px;
    color: #2c3e50;
    margin-bottom: 10px;
}

.news-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
}

.read-more {
    display: inline-block;
    color: #e74c3c;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.read-more:hover {
    color: #c0392b;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.info-item i {
    font-size: 24px;
    color: #e74c3c;
    flex-shrink: 0;
}

.info-item h4 {
    font-size: 16px;
    color: #2c3e50;
    margin-bottom: 5px;
}

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

.contact-form {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 10px;
}

.contact-form h3 {
    font-size: 24px;
    color: #2c3e50;
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    color: #333;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #e74c3c;
}

.form-group textarea {
    resize: vertical;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    padding: 60px 0 30px;
    color: #fff;
}

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

.footer-section h3 {
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-section p {
    font-size: 14px;
    color: #bdc3c7;
    line-height: 1.6;
}

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

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

.footer-section ul li a {
    text-decoration: none;
    color: #bdc3c7;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #e74c3c;
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: #fff;
    transition: all 0.3s;
}

.social-links a:hover {
    background: #e74c3c;
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-bottom p {
    font-size: 14px;
    color: #bdc3c7;
}

.footer-bottom a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-bottom a:hover {
    color: #e74c3c;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: #e74c3c;
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: #c0392b;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        height: auto;
        padding: 15px;
        gap: 10px;
    }

    .logo {
        width: 100%;
        justify-content: center;
    }

    .nav {
        width: 100%;
        order: 3;
    }

    .nav ul {
        flex-wrap: wrap;
        justify-content: center;
        margin: 10px 0;
        gap: 5px;
    }

    .nav ul li {
        margin-left: 0;
        margin: 5px 10px;
    }

    .nav ul li a {
        font-size: 14px;
    }

    .header-right {
        width: 100%;
        justify-content: center;
        order: 2;
        flex-direction: column;
        gap: 10px;
    }

    .contact-info {
        order: 2;
    }

    .language-switch {
        order: 1;
    }

    .lang-btn {
        padding: 6px 12px;
        font-size: 13px;
    }

    .hero {
        margin-top: 140px;
        height: 400px;
    }

    .slide-content {
        left: 5%;
        right: 5%;
        width: 90%;
    }

    .slide-content h1 {
        font-size: 28px;
        line-height: 1.3;
    }

    .slide-content p {
        font-size: 14px;
        margin-bottom: 20px;
    }

    .btn {
        padding: 10px 25px;
        font-size: 14px;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .section-header h2 {
        font-size: 28px;
    }

    .about {
        padding: 60px 0;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .about-image {
        order: 2;
    }

    .about-text {
        order: 1;
    }

    .about-text h3 {
        font-size: 22px;
    }

    .about-text p {
        font-size: 14px;
    }

    .stats {
        flex-direction: column;
        gap: 20px;
    }

    .stat-number {
        font-size: 28px;
    }

    .products {
        padding: 60px 0;
    }

    .product-categories {
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 30px;
    }

    .category-btn {
        padding: 8px 20px;
        font-size: 13px;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }

    .product-image {
        height: 200px;
    }

    .product-info h3 {
        font-size: 16px;
    }

    .product-info p {
        font-size: 13px;
    }

    .news {
        padding: 60px 0;
    }

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

    .news-image {
        height: 180px;
    }

    .news-content h3 {
        font-size: 16px;
    }

    .contact {
        padding: 60px 0;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .contact-info {
        gap: 20px;
    }

    .info-item {
        gap: 15px;
    }

    .info-item i {
        font-size: 20px;
    }

    .contact-form {
        padding: 25px;
    }

    .contact-form h3 {
        font-size: 20px;
        margin-bottom: 20px;
    }

    .footer {
        padding: 40px 0 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-section h3 {
        font-size: 16px;
        margin-bottom: 15px;
    }

    .footer-section p {
        font-size: 13px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .header .container {
        padding: 10px;
    }

    .logo a {
        font-size: 20px;
    }

    .logo i {
        font-size: 24px;
    }

    .nav ul li {
        margin: 5px 8px;
    }

    .nav ul li a {
        font-size: 13px;
    }

    .hero {
        margin-top: 120px;
        height: 350px;
    }

    .slide-content h1 {
        font-size: 24px;
    }

    .slide-content p {
        font-size: 13px;
    }

    .btn {
        padding: 8px 20px;
        font-size: 13px;
    }

    .section-header h2 {
        font-size: 24px;
    }

    .section-header p {
        font-size: 14px;
    }

    .about-text h3 {
        font-size: 20px;
    }

    .stat-number {
        font-size: 24px;
    }

    .stat-label {
        font-size: 13px;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }

    .product-image {
        height: 180px;
    }

    .news-image {
        height: 160px;
    }

    .contact-form {
        padding: 20px;
    }

    .form-group input,
    .form-group textarea {
        padding: 10px 12px;
        font-size: 13px;
    }

    .social-links a {
        width: 35px;
        height: 35px;
    }

    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 15px;
        right: 15px;
    }
}

/* 发展历程 */
.history {
    padding: 100px 0;
    background: #f8f9fa;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: #e74c3c;
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 80px;
    background: #e74c3c;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    z-index: 2;
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.4);
}

.timeline-content {
    width: 45%;
    background: #fff;
    padding: 25px 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.timeline-content h3 {
    font-size: 20px;
    color: #2c3e50;
    margin-bottom: 10px;
}

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

/* 合作品牌 */
.brands {
    padding: 100px 0;
    background: #fff;
}

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

.brand-card {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.brand-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.brand-hush:hover {
    border-color: #0033A0;
}

.brand-deichmann:hover {
    border-color: #E2001A;
}

.brand-rieker:hover {
    border-color: #0055A4;
}

.brand-name {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.brand-hush .brand-name {
    color: #0033A0;
}

.brand-deichmann .brand-name {
    color: #E2001A;
}

.brand-rieker .brand-name {
    color: #0055A4;
}

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

/* 产品标签 */
.product-tag {
    display: inline-block;
    padding: 5px 15px;
    background: #e74c3c;
    color: #fff;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 500;
}

/* 发展历程响应式 */
@media (max-width: 768px) {
    .history {
        padding: 60px 0;
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        flex-direction: row !important;
        padding-left: 80px;
    }

    .timeline-year {
        left: 30px;
        width: 60px;
        height: 60px;
        font-size: 14px;
    }

    .timeline-content {
        width: 100%;
        padding: 20px;
    }

    .timeline-content h3 {
        font-size: 18px;
    }

    .brands {
        padding: 60px 0;
    }

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

    .brand-card {
        padding: 30px 20px;
    }

    .brand-name {
        font-size: 24px;
    }
}