/* 确保页面最小高度为100vh，使footer能固定在底部 */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1 0 auto;
}

.pagebottom {
    flex-shrink: 0;
    width: 100%;
    background-color: #592d9e;
    padding: 48px 20px 20px;
    margin-top: auto;
}

.top{
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(240px, 1fr) fit-content(300px) minmax(360px, 1.35fr);
    gap: 36px;
    align-items: start;
}

.top_item{
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.footer-brand-logo{
    width: 240px;
    height: auto;
    margin-bottom: 20px;
}

.footer-nav{
    padding-top: 4px;
    width: auto;
    justify-self: center;
}

.top_item p{
    font-size: 16px;
    color: #fff;
    line-height: 1.8;
    margin: 0;
}

.footer-nav-list{
    display: grid;
    grid-template-columns: repeat(2, minmax(92px, max-content));
    gap: 8px 24px;
    width: auto;
    max-width: 100%;
    justify-items: start;
}

.footer-nav-list a{
    display: inline-flex;
    align-items: center;
    width: fit-content;
    max-width: 100%;
    min-height: auto;
    padding: 4px 0;
    font-size: 15px;
    color: rgba(255, 255, 255, 0.88);
    margin: 0;
    transition: color 0.2s ease, transform 0.2s ease;
}

.footer-nav-list a::before {
    content: "";
    width: 5px;
    height: 5px;
    margin-right: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.45);
    flex-shrink: 0;
}

.footer-nav-list a:hover {
    color: #fff;
    transform: translateX(3px);
}

.footer-contact-layout{
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 24px;
    align-items: start;
}

.footer-contact-info{
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* 版权信息 */
.copyright{
    width: 100%;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.copyright a {
    color: rgba(255, 255, 255, 0.7) !important;
    text-decoration: none;
}

/* 二维码样式 */
.qrcode-container {
    display: flex;
    gap: 16px;
    margin-top: 0;
    justify-content: flex-end;
    width: auto;
    flex-wrap: nowrap;
}

.qrcode-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    padding: 14px 12px 12px;
    border-radius: 12px;
    min-width: 128px;
}

.qrcode-item img {
    width: 120px;
    height: 120px;
    margin-bottom: 10px;
    background: #fff;
    padding: 5px;
    border-radius: 4px;
}

.qrcode-text {
    color: #fff;
    font-size: 13px;
    text-align: center;
    margin: 0 !important;
}

@media (max-width: 1080px) {
    .top{
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .footer-contact-item{
        grid-column: 1 / -1;
    }
}

/* 移动端适配 */
@media (max-width: 767px) {
    .top{
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .top_item{
        width: 100% !important;
        margin-bottom: 20px;
        align-items: center;
        text-align: center;
    }

    .footer-nav{
        padding-top: 0;
    }

    .footer-contact-item{
        text-align: center;
        margin-bottom: 0;
        grid-column: auto;
    }

    .footer-nav-list{
        width: 100%;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .footer-nav-list a {
        justify-content: center;
        padding: 4px 0;
    }

    .footer-contact-layout{
        grid-template-columns: 1fr;
        gap: 18px;
        width: 100%;
    }

    .footer-contact-info{
        align-items: center;
    }

    .qrcode-container {
        justify-content: center;
        gap: 20px;
        flex-wrap: wrap;
        width: 100%;
    }

    .qrcode-item {
        padding: 12px;
    }
}

/* 小屏幕额外调整 */
@media (max-width: 480px) {
    .pagebottom{
        padding: 30px 15px;
    }

    .top{
        gap: 25px;
    }

    .top_item p{
        font-size: 14px;
    }

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

    .footer-nav-list a{
        font-size: 14px;
        justify-content: flex-start;
    }

    .top_item:first-child{
        display: none;
    }

    .qrcode-container {
        gap: 15px;
    }

    .qrcode-item {
        padding: 10px;
    }

    .qrcode-item img {
        width: 100px;
        height: 100px;
        padding: 4px;
    }

    .qrcode-text {
        font-size: 12px;
    }
}