html,
body,
body div,
span,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
abbr,
address,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
samp,
small,
strong,
sub,
sup,
var,
b,
i,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
figure,
footer,
header,
menu,
nav,
section,
time,
mark,
audio,
video,
details,
summary {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font-weight: normal;
    vertical-align: baseline;
    background: transparent;
    font-family: sans-serif;
}

main,
article,
aside,
figure,
footer,
header,
nav,
section,
details,
summary {
    display: block;
}

html {
    box-sizing: border-box;
}

*,
*:before,
*:after {
    box-sizing: inherit;
}

img {
    max-width: 100%;
}

ul {
    list-style: none;
}

/* we'll restore bullets as needed for content */

li {
    list-style: none;
}

blockquote,
q {
    quotes: none;
}

    blockquote:before,
    blockquote:after,
    q:before,
    q:after {
        content: "";
        content: none;
    }

a {
    margin: 0;
    padding: 0;
    font-size: 100%;
    vertical-align: baseline;
    background: transparent;
    text-decoration: none; /* 去掉下划线 */
    color: inherit; /* 文字颜色继承父元素，或设为指定颜色 */
    outline: none; /* 去掉聚焦时的默认外框（可选） */
    cursor: pointer;
}

del {
    text-decoration: line-through;
}

abbr[title],
dfn[title] {
    border-bottom: 1px dotted #000;
    cursor: help;
}

table {
    border-collapse: separate;
    border-spacing: 0;
    text-align: left;
}

th {
    font-weight: bold;
    vertical-align: bottom;
}

td {
    font-weight: normal;
    vertical-align: top;
}

    td img {
        vertical-align: top;
    }

hr {
    display: block;
    height: 1px;
    border: 0;
    border-top: 1px solid #999;
    margin: 1rem 0;
    padding: 0;
}

input,
select {
    vertical-align: middle;
}

pre {
    white-space: pre-line;
}

input[type="radio"] {
    vertical-align: text-bottom;
}

input[type="checkbox"] {
    vertical-align: bottom;
}

small {
    font-size: 0.8rem;
}

strong {
    font-weight: bold;
}

sub,
sup {
    font-size: 0.8rem;
    line-height: 0;
    position: relative;
}

sup {
    top: -0.5rem;
}

sub {
    bottom: -0.25rem;
}

pre,
code,
kbd,
samp {
    font-family: monospace, sans-serif;
}

label,
input[type="button"],
input[type="submit"],
input[type="file"],
button {
    cursor: pointer;
    border:none;
}

button,
input,
select,
textarea {
    margin: 0;
}

ins {
    background-color: var(--highlight-color);
    color: #000;
    text-decoration: none;
}

mark {
    background-color: var(--highlight-color);
    color: #000;
    font-style: italic;
    font-weight: bold;
}

blockquote {
    padding: 2rem;
    border-left: 1px solid #333;
}

.clearfix:after {
    content: "";
    display: table;
    clear: both;
}

/* https://css-tricks.com/snippets/css/clear-fix/ */

h1,
h2,
h3,
h4,
h5,
h6 {
    text-wrap: balance;
}

p {
    text-wrap: pretty;
}

@media (prefers-reduced-motion: no-preference) {
    :has(:target) {
        scroll-behavior: smooth;
    }
}

input:-internal-autofill-previewed,
input:-internal-autofill-selected {
    -webkit-text-fill-color: black;
    transition: background-color 1000s ease-out 0.5s;
}