/* CSS Reset & Base */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f7f8fa;
    color: #EDEFF2;
    line-height: 1.5;
}
ul { list-style: none; }
a { text-decoration: none; color: inherit; }

/* 移动端容器约束 */
.app-container {
    max-width: 480px;
    margin: 0 auto;
    background-color: #EDEFF2;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* 顶部导航 */
.header {
    display: flex;
    align-items: center;
    height:72px;
    line-height: 72px;
    background: #fff;
    padding: 0 16px;
    font-weight: bold;
    font-size: 16px;
}
.header-logo {
    width: 36px;
    height: 36px;
    margin-right:12px;
    margin-top: 30px;
    object-fit: contain;
}
.header-title{
    font-weight: 600;
    font-size: 16px;
    color: #000000;
}

/* ===================== download-section ===================== */
.download-section {
    background: url('assets/BANNER_download_bg.png') center top no-repeat;
    background-size: cover;
    text-align: center;
    height: 580px;
    overflow: hidden;
}
.phone-mockup {
    flex: 1;
    text-align: center;
    position: relative;
}
.phone-mockup__inner {
    position: absolute;
    left: 0;
    right: 0;
    bottom: -443px;
    z-index: 2;
}
.phone-mockup img {
    display: block;
    margin: auto;
    width: 180px;
}
.download-section h2 {
    margin-bottom: 8px;
    line-height: 36px;
    margin-top: 48px;
    font-size: 24px;
    color: #0C3D18;
}
.download-section p {
    font-size: 14px;
    line-height: 24px;
    margin-bottom: 25px;
    color: #0C3D18;
}
.download-btns {
    display: flex;
    justify-content: center;
    gap: 17px;
    margin-bottom: 49px;
}
.btn-store {
    border-radius: 8px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.btn-store img, .btn-apk img {
    width: 129px;
    display: block;
}

/* ===================== footer ===================== */
.footer {
    padding: 60px 16px 0;
    text-align: left;
}
.footer-slogan {
    font-size: 24px;
    color: #000000;
    line-height: 36px;
    font-weight: bold;
    margin-bottom: 24px;
    text-align: center;
}
.social-links {
    display: flex;
    gap: 24px;
    margin-bottom: 14px;
}
.social-icon {
    width: 32px;
    height: auto;
    border-radius:50%;
}
.social-links a:nth-of-type(2) img {
    width: 36px;
    height: auto;
    margin-top: -1px;
}
.footer-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    font-size: 13px;
    color: #666;
    margin-bottom: 32px;
}
.footer-nav h5 {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 16px;
    color: #000000;
}
.footer-nav li {
    margin-bottom: 16px;
    font-weight: 400;
    font-size: 14px;
    color: rgba(0,0,0,0.5);
}
.copyright {
    text-align: center;
    font-weight: 400;
    display: flex;
    align-items: center;
    font-size: 12px;
    color: rgba(0, 0, 0, 0.5);
    height: 56px;
    background: #FFFFFF;
    width: calc(100% + 32px);
    flex-direction: row;
    flex-wrap: wrap;
    align-content: space-around;
    margin-left: -16px;
    padding: 0 67px;
}
.copyright span,.copyright a {
   flex:1;
}