/* 뒤로가기 전용. .btn 과 섞지 않는다. 페이지 CSS보다 나중에 로드된다. */
a.page-back {
    all: unset;
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    align-self: center;
    width: auto;
    height: auto;
    margin: 0;
    padding: 0 1.2rem;
    font: inherit;
    font-size: 1.3rem;
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0;
    white-space: nowrap;
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 0;
    box-shadow: none;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
}
a.page-back:visited {
    color: var(--text-primary);
    text-decoration: none;
}
a.page-back:hover,
a.page-back:focus {
    background: var(--bg-hover);
    border-color: var(--border-tertiary);
    color: var(--text-primary);
    text-decoration: none;
}