h1 {
    font-family: x-locale-heading-primary, x-locale-heading-secondary,'Source Han Serif SC', STZhongsong, "Source Han Sans CN", 'PingFang SC', 'Myriad Pro', 'Hiragino Sans GB';
}
h3 {
    font-family: system-ui;
    border-left: solid #2a80eb;
    padding-left: .5em;
    margin-top: 1.25em;
}
h5 {
    margin-bottom: 0;
    font-size: 87.5%;
}
hr {
    margin: 1em 0;
}
/* by zhangxinxu(.com) 2021-05-29 */
.hr-solid {
    border: 0;
    border-top: 1px solid #d0d0d5;
}
.hr-dotted {
    border: 0;
    border-top: 1px dotted #a2a9b6;
}
.hr-dotted2 {
    border: 0;
    border-top: 2px dotted #a2a9b6;
}
.hr-dashed {
    border: 0;
    border-top: 1px dashed #a2a9b6;
}
.hr-dashed2 {
    border: 0;
    border-top: 2px dashed #a2a9b6;
}
.hr-double {
    border: 0;
    border-top: 3px double #d0d0d5;
}
.hr-dashed-fixed {
    border: 0;
    padding-top: 1px;
    /* for IE浏览器 */
    background: repeating-linear-gradient(to right, #a2a9b6 0px, #a2a9b6 4px, transparent 0px, transparent 10px);
    /* for 现代浏览器 */
    background: repeating-linear-gradient(to right, #a2a9b6 0 var(--dashed-filled, 4px), transparent 0 calc(var(--dashed-filled, 4px) + var(--dashed-open, 6px)));
}
.hr-edge-weak {
    border: 0;
    padding-top: 1px;
    background: linear-gradient(to right, transparent, #d0d0d5, transparent);
}
.hr-twill {
    border: 0;
    padding: 3px;
    background: repeating-linear-gradient(135deg, #a2a9b6 0px, #a2a9b6 1px, transparent 1px, transparent 6px);
}
/* 现代浏览器only */
.hr-twill-colorful {
    border: 0;
    padding: 3px;
    background: linear-gradient(135deg, red, orange,green, blue, purple);
    --mask-image: repeating-linear-gradient(135deg, #000 0px, #000 1px, transparent 1px, transparent 6px);
    -webkit-mask-image: var(--mask-image);
    mask-image: var(--mask-image);
}
.hr-wavy {
    border: 0;
    color: #d0d0d5;
    height: .5em;
    white-space: nowrap;
    letter-spacing: 100vw;
    padding-top: .5em;
}
.hr-wavy::before {
    content: "\2000\2000";
    /* IE浏览器实线代替 */
    text-decoration: overline;
    /* 现代浏览器 */
    text-decoration: overline wavy;
}

.hr-shadow {
    border: 0;
    padding-top: 10px;
    color: #d0d0d5;
    border-top: 1px solid rgba(0,0,0,.1);
    box-shadow: inset 0 10px 10px -10px;
}

.hr-mid-circle,
.hr-mid-square {
    border: 0;
    color: #d0d0d5;
    background: linear-gradient(currentColor, currentColor) no-repeat center;
    background-size: 100% 1px;
}
.hr-mid-circle::before {
    content: '';
    display: block;
    width: .75em; height: .75em;
    border-radius: 50%;
    background-color: currentColor;
    margin: auto;
}
.hr-mid-square::before {
    content: '';
    display: block;
    width: .75em; height: .75em;
    transform: rotate(45deg);
    background-color: currentColor;
    margin: 3px auto;
}
.hr-mid-circle[multiline]::before {
    box-shadow: 1.5em 0, -1.5em 0;
}
.hr-mid-square[multiline]::before {
    box-shadow: 1.25em -1.25em, -1.25em 1.25em;;
}

.hr-space-square {
    border: 0;
    color: #d0d0d5;
    background: linear-gradient(currentColor, currentColor) no-repeat center;
    background-size: calc(100% - 1.5em - 6px) 1px;
    display: flex;
    justify-content: space-between;
}
.hr-space-square::before,
.hr-space-square::after {
    content: '';
    display: block;
    width: .75em; height: .75em;
    transform: rotate(45deg);
    box-sizing: border-box;
    border: 1px solid;
    margin: 3px;
}

.hr-double-arrow {
    color: #d0d0d5;
    border: double;
    border-width: 3px 5px;
    border-color: #d0d0d5 transparent;
    height: 1px;
    overflow: visible;
    margin-left: 20px;
    margin-right: 20px;
    position: relative;
}
.hr-double-arrow:before, 
.hr-double-arrow:after {
    content: '';
    position: absolute;
    width: 5px; height: 5px;
    border-width: 0 3px 3px 0;
    border-style: double;
    top: -3px;
    background: radial-gradient(2px at 1px 1px, currentColor 2px, transparent 0) no-repeat;
}
.hr-double-arrow:before {
    transform: rotate(-45deg);
    left: -20px;
}
.hr-double-arrow:after {
    transform: rotate(135deg);
    right: -20px;
}

.hr-solid-content,
.hr-dashed-content,
.hr-fade-content,
.hr-mid-border-content {
    color: #a2a9b6;
    border: 0;
    font-size: 12px;
    padding: 1em 0;
    position: relative;
}
.hr-solid-content::before,
.hr-dashed-content::before,
.hr-fade-content::before,
.hr-mid-border-content::before {
    content: attr(data-content);
    position: absolute;
    padding: 0 1ch;
    line-height: 1px;
    border: solid #d0d0d5;
    border-width: 0 99vw;
    width: fit-content;
    /* for IE浏览器 */
    white-space: nowrap;
    left: 50%;
    transform: translateX(-50%);
}
.hr-dashed-content::before {
    border-image: repeating-linear-gradient(90deg, #d0d0d5, #d0d0d5 1px, transparent 1px, transparent 2px) 0 85% / / 0 repeat;
}
.hr-fade-content {
    -webkit-mask-image: linear-gradient(to right, transparent, black, transparent);
    mask-image: linear-gradient(to right, transparent, black, transparent);
}

.hr-mid-border-content::after{
    content: attr(data-content);
    position: absolute;
    padding: 4px 1ch;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    color: transparent;
    border: 1px solid #d0d0d5;
}