/* 全局样式 */
:root {
    --primary-color: #4a90e2;
    --secondary-color: #50c8c6;
    --accent-color: #ff6b6b;
    --dark-color: #333333;
    --light-color: #f8f9fa;
    --text-color: #333333;
    --text-light: #666666;
    --text-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #ffffff;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
}

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

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

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

.section-header p {
    font-size: 1.2rem;
    color: var(--text-light);
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-white);
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--primary-color);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-white);
    border: 2px solid var(--text-white);
    margin-left: 15px;
}

.btn-outline:hover {
    background-color: var(--text-white);
    color: var(--primary-color);
}

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

/* 导航栏样式 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

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

.logo h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin: 0;
}

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

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

nav ul li a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    bottom: -5px;
    left: 0;
    transition: var(--transition);
}

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

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--dark-color);
    cursor: pointer;
}

/* 首页横幅样式 */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-white);
    padding: 150px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/pattern.png');
    opacity: 0.1;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.hero-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    font-weight: 500;
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-image {
    flex: 1;
    text-align: center;
    max-width: 500px;
}

.hero-image img {
    max-height: 500px;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.2));
}

/* 产品介绍样式 */
.product {
    background-color: var(--light-color);
}

.product-showcase {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
}

.product-info {
    flex: 1;
}

.product-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.product-info p {
    font-size: 1.1rem;
    margin-bottom: 25px;
    color: var(--text-light);
}

.product-highlights {
    list-style: none;
}

.product-highlights li {
    margin-bottom: 15px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
}

.product-highlights li i {
    color: var(--primary-color);
    margin-right: 10px;
    font-size: 1.2rem;
}

.product-image {
    flex: 1;
    text-align: center;
}

.product-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

/* 功能特点样式 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background-color: #ffffff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 2rem;
    color: var(--text-white);
}

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

.feature-card p {
    color: var(--text-light);
    font-size: 1rem;
}

/* 应用场景样式 */
.cases {
    background-color: var(--light-color);
}

.cases-slider {
    display: flex;
    gap: 30px;
    overflow-x: auto;
    padding-bottom: 20px;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--light-color);
}

.cases-slider::-webkit-scrollbar {
    height: 8px;
}

.cases-slider::-webkit-scrollbar-track {
    background: var(--light-color);
}

.cases-slider::-webkit-scrollbar-thumb {
    background-color: var(--primary-color);
    border-radius: 10px;
}

.case-item {
    min-width: 350px;
    background-color: #ffffff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    flex: 1;
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

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

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

.case-item:hover .case-image img {
    transform: scale(1.05);
}

.case-content {
    padding: 20px;
}

.case-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.case-content p {
    color: var(--text-light);
    font-size: 1rem;
}

/* 关于我们样式 */
.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.about-info {
    flex: 1;
}

.about-info p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text-light);
}

.company-values {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.value-item {
    text-align: center;
    flex: 1;
    padding: 20px;
    background-color: var(--light-color);
    border-radius: 10px;
    margin: 0 10px;
}

.value-item h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.value-item p {
    font-size: 1rem;
    margin-bottom: 0;
}

/* 联系我们样式 */
.contact {
    background-color: var(--light-color);
}

.contact-content {
    display: flex;
    gap: 50px;
}

.contact-info {
    flex: 1;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: 15px;
    margin-top: 5px;
}

.contact-item h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.contact-item p {
    color: var(--text-light);
    font-size: 1rem;
}

.qrcode {
    width: 120px;
    margin-top: 10px;
    border: 1px solid var(--border-color);
}

.contact-form {
    flex: 1;
    background-color: #ffffff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.contact-form h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    color: var(--text-color);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.2);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-logo h2 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.footer-logo p {
    font-size: 1rem;
    opacity: 0.8;
}

.footer-links {
    display: flex;
    gap: 50px;
}

.footer-links-column h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--text-white);
    position: relative;
}

.footer-links-column h3::after {
    content: '';
    position: absolute;
    width: 30px;
    height: 2px;
    background-color: var(--primary-color);
    bottom: -8px;
    left: 0;
}

.footer-links-column ul {
    list-style: none;
}

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

.footer-links-column ul li a {
    color: var(--text-white);
    opacity: 0.7;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links-column ul li a:hover {
    opacity: 1;
    color: var(--primary-color);
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--text-white);
    font-size: 1.2rem;
    transition: var(--transition);
}

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

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

.footer-bottom p {
    font-size: 0.9rem;
    opacity: 0.7;
}

/* 响应式设计 */
@media screen and (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        margin-bottom: 40px;
    }

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

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

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

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

    .footer-content {
        flex-direction: column;
        gap: 30px;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 30px;
    }
}

@media screen and (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    nav ul {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: #ffffff;
        flex-direction: column;
        align-items: center;
        padding: 50px 0;
        transition: var(--transition);
    }

    nav ul.active {
        left: 0;
    }

    nav ul li {
        margin: 15px 0;
    }

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

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

    .value-item {
        margin: 0;
    }
}