/* CSS Reset - 所有标签初始化 */

/* 通用重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
    display: block;
}

/* 基础元素重置 */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}

/* 列表重置 */
ol, ul {
    list-style: none;
}

/* 引用重置 */
blockquote, q {
    quotes: none;
}

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

/* 表格重置 */
table {
    border-collapse: collapse;
    border-spacing: 0;
}

/* 链接重置 */
a {
    text-decoration: none;
    color: inherit;
}

/* 按钮重置 */
button {
    border: none;
    background: none;
    cursor: pointer;
    font: inherit;
}

/* 输入框重置 */
input, textarea, select {
    border: none;
    outline: none;
    font: inherit;
    background: none;
}

/* 图片重置 */
img {
    max-width: 100%;
    height: auto;
    vertical-align: top;
}

/* 字体重置 */
body {
    line-height: 1;
    font-family: Arial, sans-serif;
}

/* 清除浮动 */
.clearfix::after {
    content: "";
    display: table;
    clear: both;
}

/* 隐藏元素 */
.hidden {
    display: none;
}

/* 可视化隐藏（保持在DOM中但不可见，用于屏幕阅读器） */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}