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

body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(102, 126, 234, 0.3);
}

/* 导航栏样式 */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.navbar .logo h1 {
    font-size: 24px;
    font-weight: 700;
}

.navbar .nav-menu {
    list-style: none;
    display: flex;
    gap: 30px;
}

.navbar .nav-menu a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar .nav-menu a:hover {
    color: #f0f0f0;
}

/* 首屏Banner区 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 120px 0 80px;
    text-align: center;
}

.hero .hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.95;
}

/* 软件介绍区 */
.about {
    padding: 40px 0;
    background-color: #fff;
}

.about h2 {
    font-size: 32px;
    margin-bottom: 20px;
    text-align: center;
    color: #333;
}

.about p {
    font-size: 17px;
    margin-bottom: 15px;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: #666;
}

.about .certificate {
    text-align: center;
    margin-top: 30px;
}

.about .certificate img {
    max-width: 600px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 软件截图展示区 */
.screenshots {
    padding: 40px 0;
    background-color: #f5f7fa;
}

.screenshots h2 {
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.screenshots .screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.screenshots .screenshot-item {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.screenshots .screenshot-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.screenshots .screenshot-item h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #333;
}

.screenshots .screenshot-item img {
    max-width: 100%;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 核心功能区 */
.features {
    padding: 40px 0;
    background-color: #f5f7fa;
}

.features h2 {
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.features .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.features .feature-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.features .feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.features .feature-item .icon {
    font-size: 24px;
    margin-bottom: 15px;
}

.features .feature-item p {
    font-size: 16px;
    color: #666;
}

/* 适用场景区 */
.scenarios {
    padding: 40px 0;
    background-color: #fff;
}

.scenarios h2 {
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.scenarios .scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.scenarios .scenario-item {
    background-color: #f5f7fa;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.scenarios .scenario-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.scenarios .scenario-item .icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.scenarios .scenario-item h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #333;
}

.scenarios .scenario-item p {
    font-size: 16px;
    color: #666;
}

/* 下载中心区 */
.download {
    padding: 40px 0;
    background-color: #f5f7fa;
}

.download h2 {
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.download .download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.download .download-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.download .download-item h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

.download .download-item p {
    font-size: 16px;
    margin-bottom: 15px;
    color: #666;
}

.download .download-note {
    text-align: center;
    font-size: 16px;
    color: #666;
    font-weight: 500;
}

/* 版本与授权说明区 */
.license {
    padding: 40px 0;
    background-color: #fff;
}

.license h2 {
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.license .license-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.license .license-item {
    background-color: #f5f7fa;
    padding: 30px;
    border-radius: 8px;
}

.license .license-item h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

.license .license-item p {
    font-size: 16px;
    margin-bottom: 15px;
    color: #666;
}

/* 购买流程区 */
.purchase {
    padding: 40px 0;
    background-color: #f5f7fa;
}

.purchase h2 {
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.purchase .purchase-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.purchase .step {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.purchase .step .step-number {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 50%;
    font-size: 20px;
    font-weight: 700;
    line-height: 40px;
    margin-bottom: 20px;
}

.purchase .step p {
    font-size: 16px;
    color: #666;
}

/* 联系方式区 */
.contact {
    padding: 40px 0;
    background-color: #fff;
}

.contact h2 {
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.contact .contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.contact .contact-item {
    background-color: #f5f7fa;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
}

.contact .contact-item .icon {
    font-size: 36px;
    margin-bottom: 20px;
}

.contact .contact-item p {
    font-size: 16px;
    color: #666;
}

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

.contact .wechat-qr img {
    max-width: 200px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 使用说明区 */
.usage {
    padding: 40px 0;
    background-color: #f5f7fa;
}

.usage h2 {
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.usage .usage-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.usage .step {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.usage .step .step-number {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 50%;
    font-size: 20px;
    font-weight: 700;
    line-height: 40px;
    margin-bottom: 20px;
}

.usage .step p {
    font-size: 16px;
    color: #666;
}

/* 用户评价区 */
.testimonials {
    padding: 40px 0;
    background-color: #fff;
}

.testimonials h2 {
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.testimonials .testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.testimonials .testimonial-item {
    background-color: #f5f7fa;
    padding: 30px;
    border-radius: 8px;
}

.testimonials .testimonial-item p {
    font-size: 16px;
    margin-bottom: 15px;
    color: #666;
    font-style: italic;
}

.testimonials .testimonial-item .author {
    font-size: 14px;
    color: #999;
    font-weight: 600;
}

/* 常见问题区 */
.faq {
    padding: 40px 0;
    background-color: #f5f7fa;
}

.faq h2 {
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.faq .faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq .faq-item {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.faq .faq-item h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #333;
}

.faq .faq-item p {
    font-size: 16px;
    color: #666;
}

/* 页脚版权区 */
.footer {
    background: linear-gradient(135deg, #4CAF50 0%, #8BC34A 100%);
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

.footer p {
    font-size: 14px;
    margin-bottom: 10px;
    opacity: 0.95;
}

/* 响应式布局 */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 20px;
    }

    .navbar .nav-menu {
        gap: 20px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 18px;
    }

    .about .certificate img {
        max-width: 100%;
    }

    .features .features-grid,
    .scenarios .scenarios-grid,
    .download .download-grid,
    .license .license-grid,
    .purchase .purchase-steps,
    .contact .contact-info,
    .usage .usage-steps,
    .testimonials .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 28px;
    }

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

    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
}