/* 全局样式 */
:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --text-color: #333;
    --light-text: #fff;
    --bg-color: #f9f9f9;
    --card-bg: #fff;
    --border-color: #e0e0e0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

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

ul {
    list-style: none;
}

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

/* 头部导航样式 */
.header {
    background-color: #fff;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

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

.logo {
    margin-right: 30px;
}

.logo-img {
    height: 40px;
    max-width: 200px;
    width: auto;
    object-fit: contain;
}

.nav-list {
    display: flex;
}

.nav-list li {
    margin-right: 20px;
}

.nav-list a {
    font-weight: 500;
    padding: 5px 0;
    position: relative;
}

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

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav-list a:hover::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 5px 0;
    transition: var(--transition);
}

/* 侧边导航样式 */
.side-nav {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100%;
    background-color: var(--card-bg);
    z-index: 1000;
    transition: var(--transition);
    box-shadow: -2px 0 5px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
}

.side-nav.active {
    right: 0;
}

.side-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.side-nav-logo img {
    height: 30px;
}

.side-nav-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
}

.side-nav-content {
    padding: 20px;
}

.side-nav-menu li {
    margin-bottom: 15px;
}

.side-nav-menu a {
    display: block;
    padding: 10px 0;
    font-weight: 500;
}

.side-nav-menu a:hover {
    color: var(--primary-color);
}

.side-nav-actions {
    margin-top: 30px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.side-nav-contact,
.side-nav-social {
    margin-bottom: 20px;
}

.side-nav-contact h4,
.side-nav-social h4 {
    margin-bottom: 10px;
    font-size: 16px;
}

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

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #f0f0f0;
    transition: var(--transition);
}

.social-icon:hover {
    background-color: var(--primary-color);
}

.social-icon-img {
    width: 20px;
    height: 20px;
}

.side-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    display: none;
    transition: var(--transition);
}

.side-nav-overlay.active {
    display: block;
}

/* 轮播横幅样式 */
.hero-banner {
    position: relative;
    height: 600px;
    overflow: hidden;
}

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

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

.slide.active {
    opacity: 1;
    z-index: 1;
}

.slide-content {
    position: relative;
    z-index: 2;
    width: 100%;
}

.banner-text {
    max-width: 600px;
    color: var(--light-text);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.banner-text h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.banner-text p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.banner-buttons {
    display: flex;
    gap: 15px;
}

.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
}

.file-bg {
    background-color: #3498db;
}

.doc-bg {
    background-color: #2ecc71;
}

.image-bg {
    background-color: #9b59b6;
}

.video-bg {
    background-color: #e74c3c;
}

.bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.4) 100%);
}

.bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;utf8,<svg width="20" height="20" xmlns="http://www.w3.org/2000/svg"><rect width="20" height="20" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></svg>');
    opacity: 0.3;
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.floating-icon {
    position: absolute;
    font-size: 3rem;
    opacity: 0.3;
    animation: float 10s infinite ease-in-out;
}

.floating-icon:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-icon:nth-child(2) {
    top: 60%;
    left: 75%;
    animation-delay: 2s;
}

.floating-icon:nth-child(3) {
    top: 30%;
    left: 85%;
    animation-delay: 4s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(10deg);
    }
}

.banner-controls {
    position: absolute;
    top: 50%;
    width: 100%;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
    transform: translateY(-50%);
}

.prev-btn,
.next-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 24px;
    color: white;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.prev-btn:hover,
.next-btn:hover {
    background: rgba(255, 255, 255, 0.4);
}

.banner-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 10px;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition);
}

.indicator.active {
    background-color: white;
    transform: scale(1.2);
}

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

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
}

.section-header p {
    font-size: 1.1rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

@media (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

.product-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    padding: 30px;
    text-align: center;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.product-icon {
    margin-bottom: 20px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.product-card p {
    color: #666;
    margin-bottom: 20px;
    min-height: 80px;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.product-features span {
    background-color: #f0f0f0;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: #555;
}

.product-link {
    display: inline-block;
    padding: 10px 30px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 5px;
    font-weight: 500;
    transition: var(--transition);
}

.product-link:hover {
    background-color: var(--secondary-color);
}

/* 页脚样式 */
.footer {
    background-color: #222;
    color: #fff;
    padding: 60px 0 20px;
}

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

.footer-section p {
    margin-bottom: 20px;
    color: #aaa;
}

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

.footer-logo img {
    height: 40px;
}

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

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

.social-link:hover {
    background-color: var(--primary-color);
}

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

.copyright {
    color: #aaa;
    font-size: 0.9rem;
}

.beian-icon {
    height: 14px;
    vertical-align: middle;
    margin-right: 5px;
}

/* 微信二维码弹窗样式 */
.wechat-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1100;
    display: none;
    align-items: center;
    justify-content: center;
}

.wechat-modal-content {
    background-color: white;
    border-radius: 10px;
    width: 90%;
    max-width: 400px;
    overflow: hidden;
}

.wechat-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
}

.wechat-modal-header h3 {
    font-size: 1.2rem;
    margin: 0;
}

.wechat-modal-close {
    font-size: 24px;
    cursor: pointer;
    color: #666;
}

.wechat-modal-body {
    padding: 30px 20px;
}

.wechat-qr-container {
    text-align: center;
}

.wechat-qr-img {
    width: 200px;
    height: 200px;
    margin-bottom: 15px;
}

.wechat-qr-container p {
    margin-bottom: 20px;
    color: #666;
}

.wechat-info {
    text-align: left;
    max-width: 250px;
    margin: 0 auto;
    border-top: 1px dashed var(--border-color);
    padding-top: 15px;
}

.wechat-info p {
    margin-bottom: 10px;
}

/* 响应式样式 */
@media (max-width: 992px) {
    .nav {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero-banner {
        height: 500px;
    }

    .banner-text h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .hero-banner {
        height: 400px;
    }

    .banner-text h1 {
        font-size: 2rem;
    }

    .banner-text p {
        font-size: 1rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }

    .logo-img {
        height: 35px;
        max-width: 180px;
        width: auto;
        object-fit: contain;
    }
}

@media (max-width: 576px) {
    .hero-banner {
        height: 350px;
    }

    .banner-text h1 {
        font-size: 1.8rem;
    }

    .prev-btn,
    .next-btn {
        width: 40px;
        height: 40px;
    }

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

    .logo-img {
        height: 30px;
        max-width: 150px;
        width: auto;
        object-fit: contain;
    }
}