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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #0f172a;
    --text-color: #334155;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-white);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

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

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

/* 头部导航 */
.header {
    background-color: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 45px;
    width: auto;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    gap: 40px;
}

.nav-menu a {
    color: var(--text-color);
    font-size: 16px;
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
}

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

.hero-slides {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

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

.hero-content {
    position: relative;
    z-index: 1;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding: 0 20px;
    background: rgba(0, 0, 0, 0.3);
}

.hero-title {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease 0.2s both;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background-color: #f1f5f9;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

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

/* 轮播控制按钮 */
.hero-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    transform: translateY(-50%);
    padding: 0 20px;
    z-index: 2;
}

.hero-prev,
.hero-next {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.3);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-prev:hover,
.hero-next:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* 轮播指示器 */
.hero-indicators {
    position: absolute;
    bottom: 30px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 15px;
    z-index: 2;
}

.indicator {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* 特性区域 */
.features {
    padding: 80px 0;
    background-color: var(--bg-light);
}

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

.section-title h2 {
    font-size: 36px;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.section-title p {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

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

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: white;
}

.feature-card h3 {
    font-size: 20px;
    color: var(--secondary-color);
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
}

/* 产品与服务区域 */
.products {
    padding: 80px 0;
}

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

.product-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.product-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: white;
}

.product-content {
    padding: 25px;
}

.product-content h3 {
    font-size: 20px;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

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

.product-link {
    color: var(--primary-color);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.product-link:hover {
    gap: 10px;
}

/* 解决方案区域 */
.solutions {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.solution-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    display: flex;
    gap: 30px;
    align-items: flex-start;
    transition: all 0.3s ease;
}

.solution-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.solution-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: white;
    flex-shrink: 0;
}

.solution-content h3 {
    font-size: 22px;
    color: var(--secondary-color);
    margin-bottom: 12px;
}

.solution-content p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.8;
}

/* 客户案例区域 */
.cases {
    padding: 80px 0;
}

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

.case-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.case-image {
    height: 180px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 50px;
    color: white;
}

.case-content {
    padding: 25px;
}

.case-tag {
    display: inline-block;
    padding: 4px 12px;
    background-color: var(--bg-light);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 12px;
}

.case-content h3 {
    font-size: 18px;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.case-content p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
}

/* 关于我们区域 */
.about-preview {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
    color: white;
}

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

.about-content h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.about-content p {
    font-size: 16px;
    opacity: 0.9;
    line-height: 1.8;
    margin-bottom: 30px;
}

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

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

.stat-number {
    font-size: 42px;
    font-weight: bold;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
}

.about-image {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 100px;
}

/* 页脚 */
.footer {
    background-color: var(--secondary-color);
    color: white;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo-img {
    height: 40px;
    margin-bottom: 20px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-contact {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.footer-contact div {
    margin-bottom: 10px;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.footer-links a:hover {
    color: white;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

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

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu a {
        padding: 15px 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-menu a::after {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero {
        height: 500px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .features-grid,
    .products-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .about-preview .container {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .hero-prev,
    .hero-next {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
}

/* 页面特定样式 */
.page-header {
    margin-top: 70px;
    background: linear-gradient(135deg, rgba(30, 58, 95, 0.4) 0%, rgba(37, 99, 235, 0.4) 100%), url('../images/img_05.jpg') center/cover no-repeat;
    padding: 80px 0;
    text-align: center;
    color: white;
}

.page-header h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

.page-content {
    padding: 80px 0;
}

/* 产品详情页面样式 */
.software-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.software-image {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 20px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 120px;
    color: white;
}

.software-info h2 {
    font-size: 32px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.software-info p {
    color: var(--text-light);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-top: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.feature-item::before {
    content: '✓';
    width: 24px;
    height: 24px;
    background: var(--success-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

/* 服务列表样式 */
.services-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.service-item {
    padding: 25px;
    background: var(--bg-light);
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
}

.service-item:hover {
    background: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.service-item h4 {
    color: var(--secondary-color);
    font-size: 16px;
    margin-bottom: 8px;
}

.service-item p {
    color: var(--text-light);
    font-size: 13px;
}

/* 关于我们页面样式 */
.about-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.about-text h2 {
    font-size: 36px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-light);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.value-card {
    text-align: center;
    padding: 30px;
}

.value-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: white;
    margin: 0 auto 20px;
}

.value-card h3 {
    color: var(--secondary-color);
    font-size: 20px;
    margin-bottom: 10px;
}

.value-card p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
}

/* 联系我们表单 */
.contact-section {
    background: var(--bg-light);
    padding: 80px 0;
}

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

.contact-info h3 {
    font-size: 28px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.contact-info p {
    color: var(--text-light);
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--secondary-color);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s ease;
}

.btn-submit:hover {
    background: var(--primary-dark);
}