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

/* 全局样式 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* 确保所有页面背景色满屏 */
#targetDiv {
    min-height: 100vh;
    background-color: #f5f5f5;
}

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

/* 头部导航样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo h1 {
    color: #007bff;
    font-size: 24px;
    font-weight: 700;
}

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

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

.nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav ul li a:hover {
    color: #007bff;
}

/* 首屏样式 */
.hero {
    background-color: #007bff;
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

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

.hero p {
    font-size: 18px;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 下载按钮样式 */
.downlbtnvmmn {
    display: inline-block;
    background-color: #fff;
    color: #007bff;
    padding: 12px 30px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 30px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.downlbtnvmmn:hover {
    background-color: #f8f9fa;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

/* 通用区块样式 */
section {
    padding: 80px 0;
}

section h3 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 50px;
    color: #333;
}

/* 产品分类版块样式 */
.product-categories {
    background-color: #fff;
}

.categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    text-align: center;
}

.category {
    padding: 30px;
    background-color: #f8f9fa;
    border-radius: 10px;
    transition: all 0.3s ease;
}

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

.category h4 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #007bff;
}

/* 会员套餐板块样式 */
.membership-plans {
    background-color: #f5f5f5;
}

.plans {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.plan {
    background-color: #fff;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    position: relative;
}

.plan:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.plan.featured {
    transform: scale(1.05);
    border: 2px solid #007bff;
}

.plan-header {
    text-align: center;
    margin-bottom: 30px;
    position: relative;
}

.plan-header h4 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #333;
}

.price {
    margin-bottom: 10px;
}

.amount {
    font-size: 36px;
    font-weight: 700;
    color: #007bff;
}

.period {
    font-size: 18px;
    color: #666;
    margin-left: 5px;
}

.featured-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background-color: #ffc107;
    color: #333;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.plan-features {
    margin-bottom: 30px;
}

.plan-features ul {
    list-style: none;
}

.plan-features li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    color: #555;
}

.plan-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: 600;
}

.plan-footer {
    text-align: center;
}

.buy-btn {
    display: inline-block;
    background-color: #007bff;
    color: #fff;
    padding: 12px 30px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 30px;
    transition: all 0.3s ease;
    width: 100%;
}

.buy-btn:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.plan.featured .buy-btn {
    background-color: #28a745;
}

.plan.featured .buy-btn:hover {
    background-color: #218838;
}

/* 功能介绍板块样式 */
.features {
    background-color: #f5f5f5;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature {
    padding: 30px;
    background-color: #fff;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
}

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

.feature h4 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #007bff;
}

/* 优势介绍样式 */
.advantages {
    background-color: #fff;
}

.advantage-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.advantage {
    padding: 30px;
    background-color: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #007bff;
}

.advantage h4 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #007bff;
}

/* 产品介绍板块样式 */
.product-intro {
    background-color: #f5f5f5;
}

.intro-content {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    align-items: center;
}

.intro-text {
    flex: 1;
    min-width: 300px;
}

.intro-text h4 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #007bff;
}

.intro-text p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.intro-image {
    flex: 1;
    min-width: 300px;
}

.more-info {
    display: inline-block;
    background-color: #007bff;
    color: #fff;
    padding: 10px 25px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 30px;
    transition: all 0.3s ease;
    margin-top: 15px;
}

.more-info:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

/* 常见问题板块样式 */
.faq {
    background-color: #f5f5f5;
}

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

.faq-item {
    margin-bottom: 20px;
    padding: 20px;
    background-color: #fff;
    border-radius: 10px;
}

.faq-item h4 {
    color: #007bff;
    margin-bottom: 10px;
}

.more-faq {
    display: block;
    text-align: center;
    margin-top: 30px;
    color: #007bff;
    text-decoration: none;
    font-weight: 600;
}

.more-faq:hover {
    text-decoration: underline;
}

/* 下载页面样式 */
.download-section {
    background-color: #fff;
    text-align: center;
}

.download-section h2 {
    font-size: 32px;
    margin-bottom: 20px;
}

.download-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 0;
}

.download-item {
    padding: 40px 20px;
    background-color: #f8f9fa;
    border-radius: 10px;
    transition: all 0.3s ease;
}

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

.download-item h3 {
    font-size: 22px;
    margin-bottom: 10px;
    color: #007bff;
}

.download-item p {
    margin-bottom: 20px;
}

/* FAQ页面样式 */
.faq-section {
    background-color: #fff;
}

.faq-section h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
}

/* 功能介绍页面样式 */
.features-section {
    background-color: #fff;
}

.features-section h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
}

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

.feature-detail {
    margin-bottom: 40px;
    padding: 30px;
    background-color: #f8f9fa;
    border-radius: 10px;
}

.feature-detail h3 {
    text-align: left;
    margin-bottom: 15px;
    color: #007bff;
}

.cta-section {
    text-align: center;
    margin-top: 60px;
}

.cta-section h3 {
    margin-bottom: 30px;
}

/* 教程页面样式 */
.tutorial-section {
    background-color: #fff;
}

.tutorial-section h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 20px;
}

.tutorial-section > p {
    text-align: center;
    margin-bottom: 60px;
    font-size: 18px;
}

.tutorial-step {
    margin-bottom: 60px;
}

.tutorial-step h3 {
    text-align: left;
    margin-bottom: 30px;
    color: #007bff;
}

.platform-steps, .use-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.platform-step, .use-step {
    padding: 25px;
    background-color: #f8f9fa;
    border-radius: 10px;
}

.platform-step h4, .use-step h4 {
    color: #007bff;
    margin-bottom: 15px;
}

.platform-step p, .use-step p {
    line-height: 1.8;
}

.tutorial-notes {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    border-left: 4px solid #007bff;
}

.tutorial-notes h3 {
    text-align: left;
    margin-bottom: 20px;
    color: #007bff;
}

.tutorial-notes ul {
    list-style: disc;
    margin-left: 20px;
}

.tutorial-notes ul li {
    margin-bottom: 10px;
}

/* 底部版权板块样式 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-info h3 {
    color: #fff;
    margin-bottom: 15px;
    text-align: left;
}

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

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

.footer-links ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: #fff;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
    }

    .nav ul {
        margin-top: 20px;
    }

    .nav ul li {
        margin-left: 15px;
        margin-right: 15px;
    }

    .hero h2 {
        font-size: 28px;
    }

    section {
        padding: 60px 0;
    }

    .advantage-list {
        grid-template-columns: 1fr;
    }

    .feature-detail-list {
        padding: 0 20px;
    }

    /* 产品介绍板块响应式 */
    .intro-content {
        flex-direction: column;
        text-align: center;
    }

    .intro-text {
        order: 2;
    }

    .intro-image {
        order: 1;
    }

    /* 会员套餐板块响应式 */
    .plans {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .plan.featured {
        transform: none;
    }
}

@media (max-width: 480px) {
    .nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero h2 {
        font-size: 24px;
    }

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