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

/* 基础样式设置 */
html {
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    background-color: #F5F5F5;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    /*padding: 0 1.25rem;*/
}
.container-alt {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.875rem;
    background-color: #DFECFF;
    border-radius: 2.5rem;
}
/* 渐变背景 */
.gradient-bg {
    background: linear-gradient(to bottom, #87B6FA 0%, #F5F5F5 60%, #F5F5F5 100%);
    /*background: linear-gradient(135deg, #87B6FA 0%, #F5F5F5 100%);*/
    min-height: 43.75rem;
    position: relative;
}
.main{
    position:absolute;
    left:0px; top:0px;
    z-index: 10;
    width:100%;

}
/* 头部样式 */
header {
    /*padding: 1.875rem 0;*/
    margin-top: 1.875rem;
    position: relative;
    /*z-index: 10;*/
    /*position:absolute;*/
    /*left:30px; top:30px;*/
    /*width:100%;height: 6.875rem;*/
}

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

/* Logo样式 */
.logo {
    display: flex;
    align-items: center;
    /*gap: 0.625rem;*/
}

.logo-text {
    font-size: 1.5rem;
    /*font-weight: 700;*/
    /*color: #1a56db;*/
}

.app-icon {
    width: 1.625rem;
    height: 1.625rem;
    margin-top: 3px;
    margin-right: 5px;
    /*background-color: #1a56db;*/
    /*border-radius: 0.3125rem;*/
    /*display: flex;*/
    /*align-items: center;*/
    /*justify-content: center;*/
    /*color: white;*/
    /*font-size: 1.25rem;*/
    /*font-weight: 700;*/
}

/* 菜单样式 */
.menu {
    display: flex;
    justify-content: space-between;
    gap: 2.5rem;
    background-color: white;
    padding: 0.625rem 1.875rem;
    border-radius: 1.25rem;
    box-shadow: 0 0.25rem 0.625rem rgba(0, 0, 0, 0.08);
    min-width: 50rem;
}
.menu a {
    text-decoration: none;
    /*color: black;*/
}
.menu-item {
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.3s;
    color: black;
}

.menu-item.active {
    color: #1a56db;
}

.menu-item:hover {
    color: #1a56db;
}

/* 英雄区样式 */
.hero {
    /*padding: 3.75rem 0 5rem;*/
    margin-top: 3.125rem;
    /*text-align: center;*/
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 1.875rem;
    line-height: 1.3;
    text-align: center;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #666;
    margin-bottom: 2.5rem;
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.875rem;
    margin-bottom: 3.75rem;
    max-width: 56.25rem;
    /*margin-left: auto;*/
    /*margin-right: auto;*/
}

.problem-item {
    display: flex;
    /*flex-direction: column;*/
    align-items: center;
    gap: 0.9375rem;
    /*padding: 1.25rem;*/
    /*background-color: white;*/
    /*border-radius: 0.625rem;*/
    /*box-shadow: 0 0.25rem 0.625rem rgba(0, 0, 0, 0.05);*/
}

.problem-icon {
    width: 3.4375rem;
    height: 3.4375rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.problem-text {
    font-size: 1.125rem;
    color: #333;
    font-weight: 500;
}

.promo-image {
    width: 32.5rem;
    height: auto;
}

/* 下载按钮样式 */
.download-btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 0.625rem;
    background-color: #FAA22D;
    color: white;
    padding: 0.9375rem 2.5rem;
    border-radius: 1.25rem;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    box-shadow: 0 0.25rem 0.625rem rgba(26, 86, 219, 0.3);
    width: 21.875rem;height: 3.125rem;

}

.download-btn:hover {
    background-color: #1548b8;
    transform: translateY(-2px);
    box-shadow: 0 0.375rem 0.9375rem rgba(26, 86, 219, 0.4);
}

.download-icon {
    width: 1.25rem;
    height: 1.25rem;
}

/* 功能特点部分 */
.features {
    /*padding: 5rem 0;*/
    margin-top: 3.125rem;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 3.75rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 3.125rem;
    height: 0.3125rem;
    background-color: #1a56db;
    margin: 0.9375rem auto 0;
    border-radius: 0.15625rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3.125rem;
    max-width: 75rem;
    margin: 0 auto;
}

.feature-card {
    background-color:  rgba(255, 255, 255, 0.5);;
    /*background-color: white;*/
    padding: 2.5rem;
    border-radius: 1.25rem;
    box-shadow: 0 0.25rem 0.625rem rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s;
    /*width: 25rem;*/
    /*margin: auto;*/
}

.feature-card:hover {
    transform: translateY(-0.625rem);
}

.feature-icon {
    width: 4.375rem;
    height: 4.375rem;
    margin: 0 auto 1.5625rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-title {
    font-size: 1.375rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.9375rem;
}

.feature-desc {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
}

/* 软件下载部分 */
.software-download {
    margin-top: 3.125rem;
    /*padding: 5rem 0;*/
    /*background-color: #f9f9f9;*/
}

.downloads-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3.125rem;
    max-width: 56.25rem;
    margin: 0 auto;
}

.download-card {
    background-color: white;
    padding: 2.5rem;
    border-radius: 1.25rem;
    box-shadow: 0 0.25rem 0.625rem rgba(0, 0, 0, 0.05);
    text-align: center;
}

.download-card h3 {
    font-size: 1.75rem;
    /*color: #1a56db;*/
    margin-bottom: 0.625rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-platform {
    font-size: 1rem;
    color: #666;
    margin-bottom: 1.5625rem;
}

.platform-icon {
    width: 5rem;
    height: 5rem;
    margin: 0 auto 1.5625rem;
}

.coming-soon-btn {
    background-color: #B7B4B4;
    cursor: not-allowed;
}

.coming-soon-btn:hover {
    background-color: #666;
    transform: none;
    box-shadow: 0 0.25rem 0.625rem rgba(0, 0, 0, 0.3);
}

/* 支持部分 */
.support {
    /*padding: 5rem 0;*/
    margin-top: 3.125rem;
    /*text-align: center;*/
}

.support-desc {
    font-size: 1.125rem;
    color: #666;
    /*max-width: 43.75rem;*/
    /*margin: 0 auto 2.5rem;*/
    text-align: center;
}

.support-contact {
    display: flex;
    /*flex-direction: column;*/
    justify-content: space-around;
    /*align-items: center;*/
    gap: 1.25rem;
    /*margin-bottom: 3.125rem;*/
    padding-top: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.3125rem;
    font-size: 1.125rem;
    color: #666;
    margin-top: 20px;
}

.contact-icon {
    width: 2.1875rem;
    height: 1.5625rem;
    text-align: center;
}
.contact-icon img{
    height: 1.5625rem;
    width: auto;
}
/* 页脚样式 */
footer {
    background: linear-gradient(to top, #87B6FA 0%, #F5F5F5 100%);
    /*background-color: #333;*/
    padding: 2.5rem 0;
    color: black;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

.footer-links {
    display: flex;
    gap: 1.875rem;
    font-size: 0.875rem;
}

.footer-links a {
    text-decoration: none;
    color: black;
}

.footer-links a:hover {
    text-decoration: underline;
}

.footer-copyright {
    font-size: 0.875rem;
    /*color: #ccc;*/
}

.footer-beian {
    display: flex;
    align-items: center;
    /*gap: 1.875rem;*/
    font-size: 0.75rem;
    color: #565656;
    margin-top: 0.625rem;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .header-content {
        /*flex-direction: column;*/
        gap: 1.875rem;
    }

    .menu {
        /*flex-wrap: wrap;*/
        /*justify-content: center;*/
        /*gap: 1.25rem;*/
        /*padding: 0.9375rem 1.25rem;*/
        min-width: 500px;
    }
    .container {
        max-width: 768px;
        /*margin: 0 auto;*/
    }
    .container-alt {
        max-width: 768px;
        margin: 0 auto;
        padding: 1.875rem;
        background-color: #DFECFF;
        border-radius: 2.5rem;
    }
    .hero-subtitle,.problems-grid{
        margin-bottom: 1rem;
    }
    .problem-icon {
        width: 30px;
        height: 30px;
    }
    .hero-title {
        font-size: 2rem;
    }
    .promo-image {
        width: 420px;
        height: auto;
    }
    .problems-grid{
        column-gap: 0.5rem;
    }
    /*.problems-grid,*/
    /*.features-grid,*/
    /*.downloads-grid {*/
    /*    grid-template-columns: 1fr;*/
    /*}*/
    .download-btn{
        width: 250px;
    }
    /*.footer-links,*/
    /*.footer-beian {*/
    /*    flex-direction: column;*/
    /*    gap: 0.625rem;*/
    /*    text-align: center;*/
    /*}*/
}
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1.875rem;
    }

    .menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1.25rem;
        padding: 0.9375rem 1.25rem;
        min-width: 500px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .problems-grid,
    .features-grid,
    .downloads-grid {
        grid-template-columns: 1fr;
    }

    .footer-links,
    .footer-beian {
        flex-direction: column;
        gap: 0.625rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .container {
        padding: 0 1rem;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .feature-card,
    .download-card {
        padding: 1.875rem;
    }
}