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

body {
    font-family: 'Microsoft YaHei', 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* 包装容器 */
#targetDiv {
    width: 100%;
    min-height: 100vh;
}

/* 头部导航 */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: #3498db;
    text-decoration: none;
}

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

.nav-links li {
    margin-left: 2rem;
}

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

.nav-links a:hover {
    color: #3498db;
}

/* 主要内容区域 */
main {
    padding-top: 80px;
}

/* 首屏区域 */
.hero {
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: #e74c3c;
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* 下载按钮特殊样式 */
.downlbtnvmmn {
    background-color: #27ae60;
    font-size: 1.1rem;
    padding: 1.2rem 2.5rem;
}

.downlbtnvmmn:hover {
    background-color: #229954;
}

/* 通用板块样式 */
.section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

/* 产品分类板块 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
    border-color: rgba(52, 152, 219, 0.2);
}

.product-card h3 {
    font-size: 1.6rem;
    margin-bottom: 1.2rem;
    color: #3498db;
    font-weight: 600;
}

.product-card p {
    font-size: 1rem;
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.7;
    min-height: 60px;
}

/* 功能介绍板块 */
.features {
    background-color: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.feature-icon {
    width: 50px;
    height: 50px;
    background-color: #3498db;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.feature-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

/* 优势介绍板块 */
.advantages {
    background-color: #f8f9fa;
}

.advantages-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.advantage-item {
    background-color: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.advantage-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #3498db;
}

/* 产品介绍板块 */
.product-intro {
    background-color: white;
}

.product-intro-content {
    display: flex;
    flex-wrap: wrap;
    gap: 4rem;
    align-items: center;
    justify-content: space-between;
}

.product-intro-text {
    flex: 1 1 500px;
}

.product-intro-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #3498db;
}

.product-intro-text p {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.product-intro-image {
    flex: 1 1 400px;
    text-align: center;
}

.intro-image {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}

.intro-image:hover {
    transform: scale(1.02);
}

/* 会员套餐板块 */
.membership {
    background-color: #f8f9fa;
}

.membership-plans {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.plan-card {
    background-color: white;
    padding: 2.5rem 2rem;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
}

.plan-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.plan-card.premium {
    border: 2px solid #3498db;
    transform: scale(1.05);
}

.plan-card.premium:hover {
    transform: translateY(-8px) scale(1.05);
}

.plan-badge {
    position: absolute;
    top: -10px;
    right: 50%;
    transform: translateX(50%);
    background-color: #f39c12;
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
}

.plan-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.plan-price {
    margin-bottom: 2rem;
}

.plan-price .price {
    font-size: 3rem;
    font-weight: bold;
    color: #3498db;
}

.plan-price .period {
    font-size: 1.2rem;
    color: #777;
    margin-left: 0.5rem;
}

.plan-features {
    list-style: none;
    margin-bottom: 2.5rem;
    text-align: left;
}

.plan-features li {
    padding: 0.8rem 0;
    color: #555;
    font-size: 1rem;
    border-bottom: 1px solid #eee;
}

.plan-features li:last-child {
    border-bottom: none;
}

.plan-card.basic .btn {
    background-color: #3498db;
}

.plan-card.basic .btn:hover {
    background-color: #2980b9;
}

.plan-card.premium .btn {
    background-color: #e74c3c;
}

.plan-card.premium .btn:hover {
    background-color: #c0392b;
}

.plan-card.ultimate .btn {
    background-color: #27ae60;
}

.plan-card.ultimate .btn:hover {
    background-color: #229954;
}

/* 常见问题板块 */
.faq {
    background-color: #f8f9fa;
    padding: 4rem 2rem;
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background-color: white;
    margin-bottom: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    padding: 2rem;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.faq-item:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
    border-color: rgba(52, 152, 219, 0.2);
    transform: translateY(-2px);
}

.faq-question {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #3498db;
    position: relative;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: '▼';
    font-size: 0.9rem;
    color: #777;
    transition: transform 0.3s ease;
}

.faq-item:hover .faq-question::after {
    color: #3498db;
    transform: rotate(90deg);
}

.faq-item p {
    font-size: 1.05rem;
    color: #555;
    line-height: 1.7;
    margin: 0;
    padding-left: 1rem;
    border-left: 3px solid #ecf0f1;
}

/* 底部版权板块 */
footer {
    background-color: #2c3e50;
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    list-style: none;
    margin-bottom: 1rem;
}

.footer-links li {
    margin: 0 1rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #3498db;
}

/* 下载页面样式 */
.download-section {
    text-align: center;
    padding: 4rem 2rem;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 3rem auto;
}

.download-option {
    background-color: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.download-option h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #3498db;
}

/* 使用攻略页面样式 */
.guide-steps {
    max-width: 800px;
    margin: 0 auto;
}

.guide-step {
    background-color: white;
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.guide-step h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #3498db;
}

.guide-step ol {
    padding-left: 1.5rem;
}

.guide-step li {
    margin-bottom: 0.5rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        padding: 1rem;
    }
    
    .nav-links {
        margin-top: 1rem;
    }
    
    .nav-links li {
        margin-left: 1rem;
        margin-right: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid,
    .products-grid,
    .advantages-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 4rem 1rem;
    }
    
    .section {
        padding: 2rem 1rem;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
    }
}