/* 全局样式 */
:root {
    --primary-color: #d65745;
    --primary-dark: #c04836;
    --primary-light: #e76854;
    --secondary-color: #34495e;
    --text-color: #333333;
    --light-text: #666666;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --border-color: #eef0f2;
    --transition: all 0.3s ease;
    --border-radius: 8px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    margin: 0;
    padding: 0;
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    padding: 15px 0;
}

.logo h1 {
    font-size: 24px;
    color: var(--primary-color);
    margin: 0;
    font-weight: bold;
}

.logo p {
    font-size: 14px;
    color: var(--light-text);
    margin: 5px 0 0 0;
}

/* 主菜单样式 */
nav {
    margin: 0 20px;
}

.main-menu {
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    list-style: none;
}

.main-menu > li {
    position: relative;
    margin: 0 15px;
}

.main-menu > li > a {
    display: flex;
    align-items: center;
    padding: 30px 0;
    font-size: 16px;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

/* 下划线效果 */
.main-menu > li > a::before {
    content: '';
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.main-menu > li:hover > a::before,
.main-menu > li.active > a::before {
    width: 100%;
}

/* 添加箭头指示器 */
.main-menu > li.has-submenu > a::after {
    content: '▾';
    margin-left: 5px;
    font-size: 12px;
    transition: transform 0.3s ease;
}

.main-menu > li.has-submenu:hover > a::after {
    transform: rotate(180deg);
}

.main-menu > li:hover > a,
.main-menu > li.active > a {
    color: var(--primary-color);
}

/* 下拉菜单样式 */
.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--white);
    min-width: 200px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;
    padding: 0;
    margin: 0;
    list-style: none;
}

.main-menu > li:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu li {
    border-bottom: 1px solid var(--border-color);
}

.submenu li:last-child {
    border-bottom: none;
}

.submenu a {
    display: block;
    padding: 12px 20px;
    color: var(--text-color);
    font-size: 14px;
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

.submenu a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0;
    background-color: var(--primary-color);
    opacity: 0.1;
    transition: width 0.3s ease;
}

.submenu a:hover::before {
    width: 100%;
}

.submenu a:hover {
    color: var(--primary-color);
}

/* 首页横幅 */
.hero {
    height: 600px;
    margin-top: 80px;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../images/hero-bg.jpg') no-repeat center center;
    background-size: cover;
}

.hero .container {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--white);
}

.hero h2 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 24px;
    font-weight: normal;
    margin-bottom: 30px;
}

.hero p {
    font-size: 16px;
    max-width: 800px;
    margin-bottom: 40px;
}

/* 内容区域通用样式 */
.section {
    padding: 80px 0;
    background: var(--white);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    padding-bottom: 15px;
    color: var(--primary-color);
    font-weight: bold;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
}

/* 内容卡片样式 */
.content-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin: 0 auto;
    max-width: 1200px;
}

.content-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.content-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.content-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.content-card h3 {
    font-size: 18px;
    margin: 20px;
    font-weight: normal;
}

.content-card p {
    font-size: 14px;
    color: var(--light-text);
    margin: 0 20px 20px;
    line-height: 1.8;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 40px;
    background-color: var(--primary-color);
    color: var(--white);
    font-size: 16px;
    text-align: center;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    border-radius: var(--border-radius);
}

.btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(214, 87, 69, 0.2);
}

/* 语言切换按钮 */
.language-switcher {
    display: flex;
    gap: 10px;
}

.lang-btn {
    padding: 6px 15px;
    font-size: 14px;
    border: 1px solid var(--border-color);
    background: var(--white);
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
    border-radius: var(--border-radius);
}

.lang-btn.active {
    background-color: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .header-content {
        height: 60px;
    }

    .main-menu > li > a {
        padding: 20px 0;
        font-size: 14px;
    }

    .main-menu > li > a::before {
        bottom: 15px;
    }

    .submenu {
        min-width: 180px;
    }

    .content-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero h2 {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .hero {
        height: 400px;
    }
    
    .hero h2 {
        font-size: 28px;
    }
    
    .section {
        padding: 50px 0;
    }
}

/* 联系我们样式 */
.contact-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

.contact-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    padding: 40px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

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

.contact-item i {
    font-size: 24px;
    color: var(--primary-color);
    width: 40px;
    height: 40px;
    background: var(--light-gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info h3 {
    font-size: 18px;
    color: var(--text-color);
    margin: 0 0 8px 0;
    font-weight: 500;
}

.contact-info p {
    font-size: 16px;
    color: var(--light-text);
    margin: 0;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .contact-card {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 30px;
    }

    .contact-item {
        gap: 15px;
    }

    .contact-item i {
        font-size: 20px;
        width: 35px;
        height: 35px;
    }

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

    .contact-info p {
        font-size: 14px;
    }
}

/* 页脚样式 */
footer {
    background-color: #1a1a1a;
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    margin-bottom: 30px;
    text-align: center;
}

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

.footer-section h3 {
    color: var(--white);
    font-size: 18px;
    margin: 0 0 20px;
    font-weight: 500;
}

.footer-info {
    margin-bottom: 20px;
}

.footer-info h2 {
    font-size: 24px;
    color: var(--primary-color);
    margin: 0 0 10px;
    font-weight: bold;
}

.footer-info p {
    font-size: 16px;
    color: #999;
    margin: 0;
}

.footer-description p {
    color: #999;
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-links a {
    color: #999;
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-contact li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    color: #999;
    font-size: 14px;
}

.footer-contact i {
    color: var(--primary-color);
    margin-right: 10px;
    font-size: 16px;
}

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

.social-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(214, 87, 69, 0.2);
}

.social-link i {
    font-size: 18px;
}

.footer-subscribe {
    color: #999;
    font-size: 14px;
    margin: 0;
}

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

.copyright p {
    font-size: 14px;
    color: #666;
    margin: 0;
}

@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

@media (max-width: 768px) {
    footer {
        padding: 40px 0 15px;
    }

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

    .footer-section {
        text-align: center;
    }

    .footer-contact li {
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }

    .footer-info h2 {
        font-size: 20px;
    }

    .footer-info p {
        font-size: 14px;
    }

    .copyright p {
        font-size: 12px;
    }
}

/* 页面过渡效果 */
.page-transition {
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

/* 导航菜单样式 */
.main-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-menu li {
    margin: 0 15px;
    position: relative;
}

.main-menu a {
    color: #333;
    text-decoration: none;
    padding: 10px 0;
    display: block;
    transition: color 0.3s ease;
}

.main-menu a:hover {
    color: #007bff;
}

.main-menu .active a {
    color: #007bff;
    font-weight: bold;
}

/* 移动端菜单样式 */
@media (max-width: 992px) {
    .header-content {
        height: 60px;
        padding: 0 15px;
    }

    .mobile-menu-toggle {
        display: block;
        position: relative;
        z-index: 1001;
    }

    nav {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background: var(--white);
        transition: var(--transition);
        overflow-y: auto;
        z-index: 999;
        padding: 0;
    }

    nav.active {
        left: 0;
    }

    .main-menu {
        flex-direction: column;
        padding: 20px;
        margin: 0;
    }

    .main-menu > li {
        margin: 0;
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .main-menu > li:last-child {
        border-bottom: none;
    }

    .main-menu > li > a {
        padding: 15px 0;
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .submenu {
        position: static;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 20px;
        display: none;
        background: var(--light-gray);
    }

    .main-menu > li.active .submenu {
        display: block;
    }

    .main-menu > li.active > a::after {
        transform: rotate(180deg);
    }

    /* 移动端菜单按钮动画 */
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    /* 禁止body滚动当菜单打开时 */
    body.menu-open {
        overflow: hidden;
    }
}

/* 移动端内容适配 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        height: auto;
        padding: 60px 0;
        margin-top: 60px;
    }

    .hero h1 {
        font-size: 24px;
        line-height: 1.3;
    }

    .hero h2 {
        font-size: 20px;
    }

    .hero p {
        font-size: 16px;
        padding: 0 20px;
    }

    .section {
        padding: 40px 0;
    }

    .section-title {
        font-size: 24px;
        margin-bottom: 30px;
    }

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

    .content-card {
        margin-bottom: 20px;
    }

    .content-card img {
        height: 180px;
    }

    .content-card h3 {
        font-size: 18px;
        margin: 15px;
    }

    .content-card p {
        font-size: 14px;
        margin: 0 15px 15px;
    }

    /* 优化按钮在移动端的显示 */
    .btn {
        padding: 10px 20px;
        font-size: 14px;
        width: 100%;
        text-align: center;
    }

    /* 优化语言切换器在移动端的显示 */
    .language-switcher {
        position: fixed;
        bottom: 20px;
        right: 20px;
        background: var(--white);
        padding: 10px;
        border-radius: var(--border-radius);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }

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

/* 产品规格模态框样式 */
.spec-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.spec-modal-content {
    position: relative;
    background-color: #fff;
    margin: 5% auto;
    padding: 20px;
    width: 80%;
    max-width: 1000px;
    max-height: 80vh;
    overflow-y: auto;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.close-btn {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 24px;
    cursor: pointer;
    color: #666;
    transition: color 0.3s;
}

.close-btn:hover {
    color: #000;
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    display: none;
}

.spec-table th,
.spec-table td {
    padding: 12px;
    border: 1px solid #ddd;
    text-align: left;
}

.spec-table th {
    background-color: #f5f5f5;
    font-weight: 600;
}

.spec-table tr:nth-child(even) {
    background-color: #fafafa;
}

.spec-table tr:hover {
    background-color: #f0f0f0;
}

@media (max-width: 768px) {
    .spec-modal-content {
        width: 95%;
        margin: 10% auto;
        padding: 15px;
    }
    
    .spec-table th,
    .spec-table td {
        padding: 8px;
        font-size: 14px;
    }
}/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: 10px;
    cursor: pointer;
    position: relative;
    z-index: 1000;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-color);
    margin: 5px 0;
    transition: var(--transition);
}

/* 移动端样式 */
@media (max-width: 992px) {
    .mobile-menu-toggle {
        display: block;
    }

    .header-content {
        height: 60px;
        padding: 0 15px;
    }

    nav {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background: var(--white);
        transition: var(--transition);
        overflow-y: auto;
        z-index: 999;
    }

    nav.active {
        left: 0;
    }

    .main-menu {
        flex-direction: column;
        padding: 20px;
        margin: 0;
    }

    .main-menu > li {
        margin: 0;
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .main-menu > li:last-child {
        border-bottom: none;
    }

    .main-menu > li > a {
        padding: 15px 0;
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .submenu {
        position: static;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 20px;
        display: none;
        background: var(--light-gray);
    }

    .main-menu > li.active .submenu {
        display: block;
    }

    .main-menu > li.active > a::after {
        transform: rotate(180deg);
    }

    /* 移动端语言切换器 */
    .language-switcher {
        position: fixed;
        bottom: 20px;
        right: 20px;
        background: var(--white);
        padding: 10px;
        border-radius: var(--border-radius);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }

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

    /* 移动端菜单按钮动画 */
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    /* 禁止body滚动当菜单打开时 */
    body.menu-open {
        overflow: hidden;
    }
}

/* 移动端内容适配 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        height: auto;
        padding: 60px 0;
        margin-top: 60px;
    }

    .hero h1 {
        font-size: 24px;
        line-height: 1.3;
    }

    .hero h2 {
        font-size: 20px;
    }

    .hero p {
        font-size: 16px;
        padding: 0 20px;
    }

    .section {
        padding: 40px 0;
    }

    .section-title {
        font-size: 24px;
        margin-bottom: 30px;
    }

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

    .about-content {
        flex-direction: column;
    }

    .about-text,
    .awards {
        width: 100%;
        margin: 0;
        margin-bottom: 30px;
    }

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

    .product-categories {
        flex-direction: column;
        gap: 10px;
    }

    .category-btn {
        width: 100%;
    }

    .product-card {
        flex-direction: column;
    }

    .product-image,
    .product-info {
        width: 100%;
    }

    .product-image img {
        height: 200px;
    }
}