/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', 'Heiti SC', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    color: #333;
    background-color: #f8f9fa;
    line-height: 1.6;
}

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

/* 顶部导航样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    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 i {
    font-size: 24px;
    color: #1890ff;
    margin-right: 10px;
}

.logo h1 {
    font-size: 20px;
    color: #1890ff;
    font-weight: 600;
}

.nav {
    display: flex;
}

.nav-link {
    color: #666;
    text-decoration: none;
    margin-left: 30px;
    font-size: 16px;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
}

.nav-link i {
    margin-right: 5px;
}

.nav-link:hover, .nav-link.active {
    color: #1890ff;
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, #1890ff 0%, #096dd9 100%);
    color: #fff;
    padding: 150px 0 100px;
    text-align: center;
    margin-top: 70px;
}

.hero h2 {
    font-size: 36px;
    margin-bottom: 20px;
    font-weight: 600;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: #fff;
    color: #1890ff;
    border-radius: 4px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.primary-btn {
    background-color: #fff;
    color: #1890ff;
}

.primary-btn:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 通用区块样式 */
.section-title {
    font-size: 28px;
    color: #333;
    text-align: center;
    margin-bottom: 15px;
    font-weight: 600;
}

.section-desc {
    font-size: 16px;
    color: #666;
    text-align: center;
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 使用指南区域样式 */
.guide-section {
    padding: 100px 0;
    background-color: #fff;
}

.guide-cards {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.guide-card {
    display: flex;
    align-items: center;
    gap: 40px;
}

.guide-card.reverse {
    flex-direction: row-reverse;
}

.guide-img {
    flex: 0 0 460px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.guide-img img {
    width: 100%;
    height: auto;
    display: block;
}

.guide-content {
    flex: 1;
}

.guide-number {
    font-size: 60px;
    color: #1890ff;
    font-weight: 700;
    margin-bottom: 15px;
    opacity: 0.8;
}

.guide-content h3 {
    font-size: 24px;
    color: #333;
    margin-bottom: 20px;
    font-weight: 600;
}

.guide-content p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.guide-steps {
    list-style: none;
}

.guide-steps li {
    font-size: 15px;
    color: #666;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.guide-steps i {
    color: #52c41a;
    margin-right: 10px;
}

/* 常见问题区域样式 */
.faq-section {
    padding: 100px 0;
    background-color: #f8f9fa;
}

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

.faq-item {
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    background-color: #fff;
}

.faq-question {
    padding: 18px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 500;
    color: #333;
    font-size: 16px;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background-color: #f5fafe;
}

.faq-question i {
    color: #1890ff;
    transition: transform 0.3s ease;
}

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    background-color: #fafafa;
}

.faq-answer p {
    padding: 15px 0;
    color: #666;
    font-size: 15px;
}

.faq-answer ul {
    padding-left: 20px;
    margin-bottom: 20px;
}

.faq-answer li {
    color: #666;
    margin-bottom: 8px;
    font-size: 15px;
}

.faq-item.active .faq-answer {
    padding: 15px 25px 25px;
    max-height: 500px;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

/* 联系客服区域样式 */
.contact-section {
    padding: 100px 0;
    background-color: #fff;
}

.contact-container {
    display: flex;
    justify-content: center;
    gap: 80px;
    flex-wrap: wrap;
}

.wechat-support, .app-download {
    text-align: center;
    flex: 1;
    min-width: 300px;
}

.wechat-support h3, .app-download h3 {
    font-size: 22px;
    color: #333;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.wechat-support h3 i, .app-download h3 i {
    color: #1890ff;
    margin-right: 10px;
    font-size: 24px;
}

.wechat-support p, .app-download p {
    color: #666;
    margin-bottom: 30px;
    font-size: 16px;
}

.qrcode-container, .download-qrcode {
    width: 200px;
    height: 200px;
    margin: 0 auto 25px;
    border: 1px solid #eee;
    padding: 10px;
    border-radius: 8px;
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.qrcode {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.wechat-tip {
    font-size: 14px;
    color: #999;
}

.download-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 10px;
}

.download-link {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    background-color: #f5f5f5;
    color: #333;
    border-radius: 4px;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.download-link i {
    margin-right: 8px;
    font-size: 16px;
}

.download-link.android {
    background-color: #e6f7ef;
    color: #52c41a;
}

.download-link.ios {
    background-color: #f0f8fb;
    color: #1890ff;
}

.download-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 页脚样式 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 50px 0 30px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.footer-logo i {
    font-size: 24px;
    color: #1890ff;
    margin-right: 10px;
}

.footer-logo h3 {
    font-size: 18px;
    color: #fff;
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: 30px;
    margin-bottom: 20px;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #1890ff;
}

.copyright {
    font-size: 13px;
    color: #999;
}

/* 回到顶部按钮样式 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: #1890ff;
    color: #fff;
    border: none;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(24, 144, 255, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: #096dd9;
    transform: translateY(-2px);
}

/* 响应式样式 */
@media (max-width: 992px) {
    .guide-card, .guide-card.reverse {
        flex-direction: column;
        text-align: center;
    }
    
    .guide-steps {
        display: inline-block;
        text-align: left;
    }
    
    .guide-number {
        display: inline-block;
    }
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        height: auto;
        padding: 15px 0;
    }
    
    .nav {
        margin-top: 15px;
    }
    
    .nav-link {
        margin: 0 10px;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero h2 {
        font-size: 28px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .guide-section, .faq-section, .contact-section {
        padding: 80px 0;
    }
    
    .contact-container {
        gap: 50px;
    }
}

@media (max-width: 576px) {
    .guide-img {
        flex: 0 0 300px;
    }
    
    .guide-img img {
        width: 300px;
        height: auto;
    }
    
    .faq-question {
        font-size: 15px;
        padding: 15px 20px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}