body {
    font-family: Source Han Sans, Source Han Sans;
    margin: 0;
    padding: 0;
}

/* 导航栏样式 */
.nav_tab {
    width: 100%;
    position: fixed;
    z-index: 999;
    top: 0;
    left: 0;
}
.navbar {
    background-color: white;
    padding: 20px 10%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #4CAF7D;
    display: flex;
    align-items: center;
}

.logo i {
    background-color: #4CAF7D;
    color: white;
    padding: 5px;
    border-radius: 4px;
    margin-right: 8px;
}

.nav-links {
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 14px;
}

.nav-links a.active {
    color: #4CAF7D;
    position: relative; /* 必须，为了 ::after 定位 */
    padding-bottom: 2px;
}

.nav-links a.active::after {
    content: "";
    position: absolute;
    left: 25%; /* 调整边框起点，形成短边框 */
    right: 25%; /* 调整边框终点 */
    bottom: -5px;
    height: 3px;
    background-color: #4CAF7D;
}

.download-btn {
    background-color: #4CAF7D;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.download-btn i {
    margin-left: 8px;
}



/*页底样式*/
.footer {
    background-color: #F7FAF8;;
    padding: 40px 20px;
    border-radius: 12px 12px 0 0;
}

.footer-content {
    margin: 0 auto;
    display: flex;
    gap: 30px;
    justify-content: space-evenly;
    align-items: baseline;
}

.footer-section h3 {
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 500;
    font-size: 22px;
    color: #263238;
    text-align: left;
    margin: 10px 0;
}

.footer-section p {
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 400;
    font-size: 15px;
    color: #263238;
    line-height: 30px;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-top: 16px;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    text-decoration: none;
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 400;
    font-size: 14px;
    line-height: 30px;
    transition: color 0.3s ease;
    color: #263238;
}


.footer-section .contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.footer-section .contact-item span {
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 400;
    font-size: 15px;
    color: #263238;
    line-height: 27px;
    padding-left: 10px;
}

.copyright {
    text-align: center;
    padding: 20px;
    background: #46B97C;
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 400;
    font-size: 18px;
    color: #FFFFFF;
    line-height: 25px;
}


@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .faq-container {
        padding: 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}