/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", Arial, sans-serif;
}

/* 全局样式 */
body {
    color: #333;
    line-height: 1.6;
    background-color: #f8f9fa;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.btn {
    display: inline-block;
    background-color: #007bff;
    color: #fff;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn:hover {
    background-color: #0056b3;
}

.section-title {
    text-align: center;
    font-size: 28px;
    margin-bottom: 40px;
    color: #2d3436;
    position: relative;
}

.section-title::after {
    content: "";
    display: block;
    width: 80px;
    height: 3px;
    background-color: #007bff;
    margin: 10px auto 0;
}

/* 导航栏样式 */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 999;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    gap: 20px;
}

.logo {
    font-size: 24px;
    color: #007bff;
    font-weight: bold;
    flex: 1;
}

.menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #333;
    cursor: pointer;
}

/* 语言选择组件样式 */
.language-selector {
    position: relative;
    margin-right: 10px;
    z-index: 1000;
}

.lang-trigger {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 12px;
    cursor: pointer;
    color: #333;
    font-size: 16px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.lang-trigger:hover {
    background-color: #f8f9fa;
}

.lang-list {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border-radius: 4px;
    width: 150px;
    padding: 8px 0;
    margin-top: 5px;
    display: none;
}

.lang-list.show {
    display: block;
}

.lang-item {
    padding: 8px 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-size: 15px;
}

.lang-item:hover {
    background-color: #f8f9fa;
    color: #007bff;
}

.nav-menu {
    display: flex;
    gap: 25px;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    transition: color 0.3s ease;
}

.nav-menu a.active,
.nav-menu a:hover {
    color: #007bff;
}

/* 横幅样式 */
.banner {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

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

.banner p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}

/* 常见问题样式 */
.faq-section {
    padding: 80px 0;
    background-color: #fff;
}

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

.faq-item {
    margin-bottom: 15px;
    border: 1px solid #e9ecef;
    border-radius: 4px;
    overflow: hidden;
}

.faq-question {
    padding: 15px 20px;
    background-color: #f8f9fa;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 500;
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.show {
    padding: 20px;
    max-height: 500px;
}

/* 联系我们样式 */
.contact-section {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    justify-content: center;
    align-items: center;
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.contact-info p {
    font-size: 16px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-info i {
    color: #007bff;
    font-size: 18px;
}

.contact-form {
    flex: 1;
    min-width: 300px;
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #e9ecef;
    border-radius: 4px;
    font-size: 16px;
}

.contact-form textarea {
    resize: none;
}

/* 应用下载样式 */
.download-section {
    padding: 80px 0;
    background-color: #fff;
    text-align: center;
}

.download-content p {
    font-size: 18px;
    margin-bottom: 30px;
}

.qrcode {
    margin-bottom: 20px;
}

.qrcode img {
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.download-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.ios-btn {
    background-color: #333;
}

.ios-btn:hover {
    background-color: #000;
}

.android-btn {
    background-color: #3ddc84;
    color: #fff;
}

.android-btn:hover {
    background-color: #2bcb7e;
}

/* 页脚样式 */
.footer {
    background-color: #2d3436;
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

.footer p {
    margin-bottom: 15px;
    opacity: 0.8;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

/* 响应式样式（移动端适配） */
@media (max-width: 768px) {
    .menu-btn {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: #fff;
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
        z-index: 998;
    }

    .nav-menu.show {
        transform: translateY(0);
    }

    .language-selector {
        margin-right: 0;
    }

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

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

    .section-title {
        font-size: 24px;
    }
}