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

:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #e94560;
    --text-color: #333;
    --text-light: #666;
    --text-white: #fff;
    --bg-light: #f8f9fa;
    --bg-dark: #0f0f23;
    --border-color: #e0e0e0;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

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

ul {
    list-style: none;
}

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

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

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

.header-top {
    background: var(--primary-color);
    color: var(--text-white);
    padding: 8px 0;
    font-size: 13px;
}

.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-contact span {
    margin-right: 25px;
}

.header-contact i {
    margin-right: 5px;
    color: var(--accent-color);
}

.header-links a {
    margin-left: 20px;
    color: var(--text-white);
    opacity: 0.8;
}

.header-links a:hover {
    opacity: 1;
    color: var(--accent-color);
}

/* 主导航 */
.navbar {
    padding: 15px 0;
    background: #fff;
}

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

.logo-text {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -1px;
}

.logo-highlight {
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-menu li {
    position: relative;
    margin: 0 5px;
}

.nav-menu li a {
    display: block;
    padding: 10px 18px;
    color: var(--text-color);
    font-weight: 500;
    font-size: 15px;
    border-radius: 4px;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: var(--accent-color);
}

.nav-menu .dropdown>a i {
    font-size: 12px;
    margin-left: 5px;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    min-width: 220px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    padding: 10px 0;
}

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

.dropdown-menu li a {
    padding: 12px 20px;
    font-size: 14px;
    border-radius: 0;
}

.dropdown-menu li a:hover {
    background: var(--bg-light);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-actions a {
    font-size: 18px;
    color: var(--text-color);
    padding: 8px;
}

.nav-actions a:hover {
    color: var(--accent-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-color);
    transition: var(--transition);
}

/* Banner轮播 */
.banner {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    margin-top: 110px;
}

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

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    align-items: center;
}

.banner-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.9) 0%, rgba(22, 33, 62, 0.7) 100%);
}

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

.banner-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 0 20px;
    margin-left: 10%;
    color: var(--text-white);
}

.banner-content h1 {
    font-size: 52px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    animation: fadeInUp 0.8s ease;
}

.banner-content p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 30px;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.btn-primary {
    display: inline-block;
    padding: 14px 35px;
    background: var(--accent-color);
    color: var(--text-white);
    font-weight: 600;
    border-radius: 4px;
    transition: var(--transition);
    animation: fadeInUp 0.8s ease 0.4s both;
}

.btn-primary:hover {
    background: #d63d56;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(233, 69, 96, 0.3);
}

.banner-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--accent-color);
    transform: scale(1.2);
}

.banner-arrows {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
    z-index: 10;
    pointer-events: none;
}

.arrow {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition);
    pointer-events: auto;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.arrow:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

/* 统计数据 */
.stats {
    padding: 80px 0;
    background: var(--bg-light);
}

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

.stat-item {
    text-align: center;
    padding: 30px;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 15px;
    color: var(--text-light);
}

/* 产品分类 */
.products-section {
    padding: 100px 0;
}

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

.section-header h2 {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-header p {
    font-size: 16px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.section-header.light h2,
.section-header.light p {
    color: var(--text-white);
}

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

.product-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.product-image {
    height: 220px;
    overflow: hidden;
}

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

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

.product-info {
    padding: 25px;
}

.product-info h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.product-info p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.6;
}

.btn-link {
    display: inline-flex;
    align-items: center;
    color: var(--accent-color);
    font-weight: 600;
    font-size: 14px;
}

.btn-link i {
    margin-left: 8px;
    transition: var(--transition);
}

.btn-link:hover i {
    transform: translateX(5px);
}

.btn-link.light {
    color: var(--text-white);
    border-bottom: 1px solid transparent;
}

.btn-link.light:hover {
    border-bottom-color: var(--text-white);
}

/* 解决方案 */
.solutions {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--text-white);
}

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

.solution-item {
    text-align: center;
    padding: 40px 30px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.solution-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.solution-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 25px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.solution-item h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.solution-item p {
    font-size: 15px;
    opacity: 0.8;
    margin-bottom: 20px;
    line-height: 1.7;
}

/* OEM定制 */
.oem-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.oem-content {
    text-align: center;
}

.oem-text {
    margin-bottom: 50px;
}

.oem-text h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.oem-text p {
    font-size: 16px;
    color: var(--text-light);
}

.oem-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.oem-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.oem-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.oem-image {
    height: 280px;
    overflow: hidden;
}

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

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

.oem-info {
    padding: 30px;
}

.oem-info h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.oem-info p {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 15px;
}

/* 新闻动态 */
.news-section {
    padding: 100px 0;
}

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

.news-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    position: relative;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.news-date {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--accent-color);
    color: var(--text-white);
    padding: 10px 15px;
    border-radius: 4px;
    text-align: center;
    z-index: 2;
}

.news-date .day {
    display: block;
    font-size: 24px;
    font-weight: 700;
    line-height: 1;
}

.news-date .month {
    display: block;
    font-size: 12px;
    margin-top: 3px;
}

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

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

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

.news-content {
    padding: 25px;
}

.news-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary-color);
    line-height: 1.4;
}

.news-content p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.6;
}

/* 页脚 */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
}

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

.footer-logo .logo-text {
    color: var(--text-white);
}

.footer-col p {
    font-size: 14px;
    line-height: 1.8;
    opacity: 0.8;
    margin-bottom: 25px;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

.footer-col h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 25px;
    color: var(--text-white);
}

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

.footer-col ul li a {
    font-size: 14px;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    opacity: 1;
    color: var(--accent-color);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    opacity: 0.8;
}

.footer-contact i {
    color: var(--accent-color);
    margin-top: 3px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    opacity: 0.6;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

/* 响应式设计 */
@media (max-width: 1024px) {

    .products-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-top {
        display: none;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: #fff;
        flex-direction: column;
        padding: 30px;
        transition: var(--transition);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 5px 0;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        display: none;
    }

    .dropdown.active .dropdown-menu {
        display: block;
    }

    .hamburger {
        display: flex;
    }

    .banner {
        margin-top: 70px;
        height: 70vh;
        min-height: 500px;
    }

    .banner-content h1 {
        font-size: 32px;
    }

    .banner-content p {
        font-size: 16px;
    }

    .products-grid,
    .solutions-grid,
    .news-grid,
    .oem-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    background: #d63d56;
    transform: translateY(-3px);
}

/* 搜索覆盖层 */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 15px;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
}

.search-box input {
    flex: 1;
    padding: 15px 20px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
}

.search-box button {
    padding: 15px 25px;
    background: var(--accent-color);
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.close-search {
    font-size: 24px;
    cursor: pointer;
    color: var(--text-light);
}

/* 页面加载动画 */
body.loaded {
    opacity: 1;
}

body {
    opacity: 1;
}

/* 滚动后导航栏效果 */
.header.scrolled {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.header.scrolled .header-top {
    display: none;
}

.header.scrolled .navbar {
    padding: 10px 0;
}