/* Sticky-footer 布局：撑满视口并把页脚顶到底部 */

html, body {
    height: 100%;
}

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

main.site-main {
    flex: 1 0 auto;
}

footer {
    flex-shrink: 0;
}