/*! normalize.css v3.0.3 | MIT License | github.com/necolas/normalize.css */
/**
 * 1. Set default font family to sans-serif.
 * 2. Prevent iOS and IE text size adjust after device orientation change,
 *    without disabling user zoom.
 */
html {
  font-family: sans-serif;
  /* 1 */
  -ms-text-size-adjust: 100%;
  /* 2 */
  -webkit-text-size-adjust: 100%;}
/**
 * Remove default margin.
 */
body {
  margin: 0;}
/* HTML5 display definitions
   ========================================================================== */
/**
 * Correct `block` display not defined for any HTML5 element in IE 8/9.
 * Correct `block` display not defined for `details` or `summary` in IE 10/11
 * and Firefox.
 * Correct `block` display not defined for `main` in IE 11.
 */
article, aside, details, figcaption, figure, footer, header, hgroup, main, menu, nav, section, summary {
  display: block;}
/**
 * 1. Correct `inline-block` display not defined in IE 8/9.
 * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
 */
audio, canvas, progress, video {
  display: inline-block;
  /* 1 */
  vertical-align: baseline;}
/**
 * Prevent modern browsers from displaying `audio` without controls.
 * Remove excess height in iOS 5 devices.
 */
audio:not([controls]) {
  display: none;
  height: 0;}
/**
 * Address `[hidden]` styling not present in IE 8/9/10.
 * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
 */
[hidden], template {
  display: none;}
/* Links
   ========================================================================== */
/**
 * Remove the gray background color from active links in IE 10.
 */
a {
  background-color: transparent;}
/**
 * Improve readability of focused elements when they are also in an
 * active/hover state.
 */
a:active, a:hover {
  outline: 0;}
/* Text-level semantics
   ========================================================================== */
/**
 * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
 */
abbr[title] {
  border-bottom: 1px dotted;}
/**
 * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
 */
b, strong {
  font-weight: bold;}
/**
 * Address styling not present in Safari and Chrome.
 */
dfn {
  font-style: italic;}
/**
 * Address variable `h1` font-size and margin within `section` and `article`
 * contexts in Firefox 4+, Safari, and Chrome.
 */
h1 {
  font-size: 2em;
  margin: 0.67em 0;}
/**
 * Address styling not present in IE 8/9.
 */
mark {
  background: #ff0;
  color: #000;}
/**
 * Address inconsistent and variable font size in all browsers.
 */
small {
  font-size: 80%;}
/**
 * Prevent `sub` and `sup` affecting `line-height` in all browsers.
 */
sub, sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;}
sup {
  top: -0.5em;}
sub {
  bottom: -0.25em;}
/* Embedded content
   ========================================================================== */
/**
 * Remove border when inside `a` element in IE 8/9/10.
 */
img {
  border: 0;}
/**
 * Correct overflow not hidden in IE 9/10/11.
 */
svg:not(:root) {
  overflow: hidden;}
/* Grouping content
   ========================================================================== */
/**
 * Address margin not present in IE 8/9 and Safari.
 */
figure {
  margin: 1em 40px;}
/**
 * Address differences between Firefox and other browsers.
 */
hr {
  -webkit-box-sizing: content-box;
          box-sizing: content-box;
  height: 0;}
/**
 * Contain overflow in all browsers.
 */
pre {
  overflow: auto;}
/**
 * Address odd `em`-unit font size rendering in all browsers.
 */
code, kbd, pre, samp {
  font-family: monospace, monospace;
  font-size: 1em;}
/* Forms
   ========================================================================== */
/**
 * Known limitation: by default, Chrome and Safari on OS X allow very limited
 * styling of `select`, unless a `border` property is set.
 */
/**
 * 1. Correct color not being inherited.
 *    Known issue: affects color of disabled elements.
 * 2. Correct font properties not being inherited.
 * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
 */
button, input, optgroup, select, textarea {
  color: inherit;
  /* 1 */
  font: inherit;
  /* 2 */
  margin: 0;}
/**
 * Address `overflow` set to `hidden` in IE 8/9/10/11.
 */
button {
  overflow: visible;}
/**
 * Address inconsistent `text-transform` inheritance for `button` and `select`.
 * All other form control elements do not inherit `text-transform` values.
 * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
 * Correct `select` style inheritance in Firefox.
 */
button, select {
  text-transform: none;}
/**
 * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
 *    and `video` controls.
 * 2. Correct inability to style clickable `input` types in iOS.
 * 3. Improve usability and consistency of cursor style between image-type
 *    `input` and others.
 */
button, html input[type="button"], input[type="reset"], input[type="submit"] {
  -webkit-appearance: button;
  /* 2 */
  cursor: pointer;}
/**
 * Re-set default cursor for disabled elements.
 */
button[disabled], html input[disabled] {
  cursor: default;}
/**
 * Remove inner padding and border in Firefox 4+.
 */
button::-moz-focus-inner, input::-moz-focus-inner {
  border: 0;
  padding: 0;}
/**
 * Address Firefox 4+ setting `line-height` on `input` using `!important` in
 * the UA stylesheet.
 */
input {
  line-height: normal;}
/**
 * It's recommended that you don't attempt to style these elements.
 * Firefox's implementation doesn't respect box-sizing, padding, or width.
 *
 * 1. Address box sizing set to `content-box` in IE 8/9/10.
 * 2. Remove excess padding in IE 8/9/10.
 */
input[type="checkbox"], input[type="radio"] {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  /* 1 */
  padding: 0;}
/**
 * Fix the cursor style for Chrome's increment/decrement buttons. For certain
 * `font-size` values of the `input`, it causes the cursor style of the
 * decrement button to change from `default` to `text`.
 */
input[type="number"]::-webkit-inner-spin-button, input[type="number"]::-webkit-outer-spin-button {
  height: auto;}
/**
 * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
 * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
 */
input[type="search"] {
  -webkit-appearance: textfield;
  /* 1 */
  -webkit-box-sizing: content-box;
          box-sizing: content-box;}
/**
 * Remove inner padding and search cancel button in Safari and Chrome on OS X.
 * Safari (but not Chrome) clips the cancel button when the search input has
 * padding (and `textfield` appearance).
 */
input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;}
/**
 * Define consistent border, margin, and padding.
 */
fieldset {
  border: 1px solid #c0c0c0;
  margin: 0 2px;
  padding: 0.35em 0.625em 0.75em;}
/**
 * 1. Correct `color` not being inherited in IE 8/9/10/11.
 * 2. Remove padding so people aren't caught out if they zero out fieldsets.
 */
legend {
  border: 0;
  /* 1 */
  padding: 0;}
/**
 * Remove default vertical scrollbar in IE 8/9/10/11.
 */
textarea {
  overflow: auto;}
/**
 * Don't inherit the `font-weight` (applied by a rule above).
 * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
 */
optgroup {
  font-weight: bold;}
/* Tables
   ========================================================================== */
/**
 * Remove most spacing between table cells.
 */
table {
  border-collapse: collapse;
  border-spacing: 0;}
td, th {
  padding: 0;}
/*! HTML5 Boilerplate v5.3.0 | MIT License | https://html5boilerplate.com/ */
/*
 * What follows is the result of much research on cross-browser styling.
 * Credit left inline and big thanks to Nicolas Gallagher, Jonathan Neal,
 * Kroc Camen, and the H5BP dev community and team.
 */
/* ==========================================================================
   Base styles: opinionated defaults
   ========================================================================== */
html {
  color: #222;
  font-size: 1em;
  line-height: 1.4;
  width: 100%;
  min-width: 1200px;}
/*
 * Remove text-shadow in selection highlight:
 * https://twitter.com/miketaylr/status/12228805301
 *
 * These selection rule sets have to be separate.
 * Customize the background color to match your design.
 */
::-moz-selection {
  background: #b3d4fc;
  text-shadow: none;}
::selection {
  background: #b3d4fc;
  text-shadow: none;}
/*
 * A better looking default horizontal rule
 */
hr {
  display: block;
  height: 1px;
  border: 0;
  border-top: 1px solid #ccc;
  margin: 1em 0;
  padding: 0;}
/*
 * Remove the gap between audio, canvas, iframes,
 * images, videos and the bottom of their containers:
 * https://github.com/h5bp/html5-boilerplate/issues/440
 */
audio, canvas, iframe, img, svg, video {
  vertical-align: middle;}
/*
 * Remove default fieldset styles.
 */
fieldset {
  border: 0;
  margin: 0;
  padding: 0;}
/*
 * Allow only vertical resizing of textareas.
 */
textarea {
  resize: vertical;}
/* ==========================================================================
   Browser Upgrade Prompt
   ========================================================================== */
.browserupgrade {
  margin: 0.2em 0;
  background: #ccc;
  color: #000;
  padding: 0.2em 0;}
/* ==========================================================================
   Author's custom styles
   ========================================================================== */
/* ==========================================================================
   Helper classes
   ========================================================================== */
/*
 * Hide visually and from screen readers
 */
.hidden {
  display: none !important;}
/*
 * Hide only visually, but have it available for screen readers:
 * http://snook.ca/archives/html_and_css/hiding-content-for-accessibility
 */
.visuallyhidden {
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;}
/*
 * Extends the .visuallyhidden class to allow the element
 * to be focusable when navigated to via the keyboard:
 * https://www.drupal.org/node/897638
 */
.visuallyhidden.focusable:active, .visuallyhidden.focusable:focus {
  clip: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  position: static;
  width: auto;}
/*
 * Hide visually and from screen readers, but maintain layout
 */
.invisible {
  visibility: hidden;}
/*
 * Clearfix: contain floats
 *
 * For modern browsers
 * 1. The space content is one way to avoid an Opera bug when the
 *    `contenteditable` attribute is included anywhere else in the document.
 *    Otherwise it causes space to appear at the top and bottom of elements
 *    that receive the `clearfix` class.
 * 2. The use of `table` rather than `block` is only necessary if using
 *    `:before` to contain the top-margins of child elements.
 */
.clearfix:before, .clearfix:after {
  content: " ";
  /* 1 */
  display: table;}
.clearfix:after {
  clear: both;}
/* ==========================================================================
   EXAMPLE Media Queries for Responsive Design.
   These examples override the primary ('mobile first') styles.
   Modify as content requires.
   ========================================================================== */
@media only screen and (min-width: 35em) {
  /* Style adjustments for viewports that meet the condition */
}
@media print, (-webkit-min-device-pixel-ratio: 1.25), (min-resolution: 1.25dppx), (min-resolution: 120dpi) {
  /* Style adjustments for high resolution devices */
}
/* ==========================================================================
   Print styles.
   Inlined to avoid the additional HTTP request:
   http://www.phpied.com/delay-loading-your-print-css/
   ========================================================================== */
@media print {
  *, *:before, *:after, *:first-letter, *:first-line {
    background: transparent !important;
    color: #000 !important;
    /* black prints faster:
                                   http://www.sanbeiji.com/archives/953 */
    -webkit-box-shadow: none !important;
            box-shadow: none !important;
    text-shadow: none !important;}
  a, a:visited {
    text-decoration: underline;}
  a[href]:after {
    content: " (" attr(href) ")";}
  abbr[title]:after {
    content: " (" attr(title) ")";}
  /*
     * Don't show links that are fragment identifiers,
     * or use the `javascript:` pseudo protocol
     */
  a[href^="#"]:after, a[href^="javascript:"]:after {
    content: "";}
  pre, blockquote {
    border: 1px solid #999;
    page-break-inside: avoid;}
  /*
     * Printing Tables:
     * http://css-discuss.incutio.com/wiki/Printing_Tables
     */
  thead {
    display: table-header-group;}
  tr, img {
    page-break-inside: avoid;}
  img {
    max-width: 100% !important;}
  p, h2, h3 {
    orphans: 3;
    widows: 3;}
  h2, h3 {
    page-break-after: avoid;}
}
input::-webkit-input-placeholder, textarea::-webkit-input-placeholder {
  color: #ffffff;}
input:-moz-placeholder, textarea:-moz-placeholder {
  color: #ffffff;}
input::-moz-placeholder, textarea::-moz-placeholder {
  color: #ffffff;}
input:-ms-input-placeholder, textarea:-ms-input-placeholder {
  color: #ffffff;}
a {
  color: #000;}
a:hover {
  color: #000;}
html {
  background-color: #fff;}
body {
  font-family: "微软雅黑", Microsoft Yahei;
  background-color: #ffffff;}
div, ul, li, p, dl, dt, dd, h1, h2, h3, h4 {
  margin: 0 auto;
  padding: 0;
  list-style-type: none;
  font-weight: normal;}
input {
  margin: 0;
  padding: 0;
  border: 0;}
input:focus {
  outline: none;}
a {
  text-decoration: none;}
a:hover {
  text-decoration: none;}
html, body {
  width: 100%;
  min-width: 1200px;}
.full-width {
  display: block;
  width: 100%;}
.text-right {
  text-align: right;}
body {
  background-color: #fff;
  width: 100%;}
header {
  position: relative;
  margin: 0 auto;
  height: 198px;
  padding-bottom: 40px;
  background: url("https://www.metalnegro.com/__xh__/elsit.swjtu.edu.cn/dfiles/16515/templates/dxsys/images/header.png") no-repeat;
  background-size: auto 198px;}
header .bg-top {
  position: relative;
  background: url("https://www.metalnegro.com/__xh__/elsit.swjtu.edu.cn/dfiles/16515/templates/dxsys/images/logo.png") no-repeat;
  background-position: 0 44px;
  padding-top: 0;
  height: 198px;}
header .language {
  position: absolute;
  right: 10px;
  top: 74px;
  height: 32px;
  background: transparent;
  color: #fff;}
header .language a {
  color: #fff;}
header .language .divider {
  padding-left: 10px;
  padding-right: 10px;}
header .search {
  position: relative;
  float: right;
  width: 214px;
  height: 32px;
  margin: 104px 30px 0 0;
  background: transparent;}
header .search .search-content {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  float: left;
  width: 100%;
  *width: 190px;
  height: 30px;
  padding-left: 20px;
  padding-right: 35px;
  *padding-right: 0;
  *line-height: 30px;
  color: #fff;
  font: 16px SimSun;
  *font-size: 20px;
  border: 1px solid #fff;
  border-radius: 5px;
  vertical-align: bottom;
  background: transparent;}
header .search .search-btn {
  position: absolute;
  right: 0;
  top: 0;
  width: 30px;
  height: 30px;
  border-top-right-radius: 5px;
  border-bottom-right-radius: 5px;
  background: url("https://www.metalnegro.com/__xh__/elsit.swjtu.edu.cn/dfiles/16515/templates/dxsys/images/search_btn.png") no-repeat 50% 50%;
  background-color: #fff;}
header .search span.divider {
  position: absolute;
  color: #bbb;
  right: 35px;
  line-height: 28px;}
header .bg1 {
  width: 100%;
  position: absolute;
  top: 198px;
  height: 40px;
  margin: 0 auto;
  padding: 0;
  background-color: #005284;}
header nav {
  /* header */
  padding: 0;}
header nav > ul {
  width: 1200px;
  height: 40px;
  line-height: 45px;
  list-style: none;
  overflow: hidden;
  margin: 0 auto;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  text-align: center;}
header nav > ul > li {
  float: left;
  width: 14.2%;
  *width: 14.2%;
  text-align: center;
  font-size: 16px;
  padding-left: 10px;
  padding-right: 10px;}
header nav > ul > li:hover {
  background-color: #40a3e0;}
header nav > ul > li:hover a {
  color: #fff;}
header nav > ul li:hover > .second-nav {
  display: block;}
header nav > ul a {
  display: block;
  line-height: 40px;
  color: #fff;
  font-family: "微软雅黑", Microsoft Yahei;}
.box {
  width: 1100px;
  overflow: hidden;
  padding-top: 40px;
  padding-bottom: 20px;
  margin: 0 auto;}
.box .fl-box {
  float: left;
  width: 509px;}
.box .fr-box {
  float: right;
  width: 516px;}
.box .pic-list::after {
  content: '';
  display: block;
  clear: both;}
.box .pic-list .image-link {
  float: left;
  width: 670px;
  height: 308px;}
.box .pic-list .hot-news {
  float: right;
  position: relative;
  width: 350px;
  padding: 24px 40px;
  height: 260px;
  background-color: #005284;
  color: #fff;}
.box .pic-list .hot-news a{
   color: #fff;}
.box .pic-list .hot-news > .more {
  color: #fff;
  font-size: 10px;
  position: absolute;
  right: 24px;
  bottom: 10px;}
.box .pic-list .news-title {
  margin-bottom: 10px;
  font-size: 20px;
  font-weight: bolder;}
.box .pic-list .short-intro {
  font-size: 14px;
  line-height: 24px;
  margin-bottom: 12px;}
.box .pic-list .news-list li {
  padding-top: 10px;
  padding-bottom: 8px;
  border-top: 1px solid #fff;}
.box .pic-list .news-list-date {
  padding: 3px 5px;
  font-size: 14px;
  background-color: #009ad0;}
.box .pic-list .news-list-link {
  color: #fff;
  font-size: 14px;}
.box .icon-links {
  overflow: hidden;
  width: 100%;}
.box .icon-links li {
  float: left;
  width: 25%;
  line-height: 55px;
  text-indent: 8em;
  background-position: 5em center;
  background-repeat: no-repeat;}
.box .icon-links .icon-links-1 {
  background-image: url("https://www.metalnegro.com/__xh__/elsit.swjtu.edu.cn/dfiles/16515/templates/dxsys/images/key.png");
  background-color: #0e8301;}
.box .icon-links .icon-links-2 {
  background-image: url("https://www.metalnegro.com/__xh__/elsit.swjtu.edu.cn/dfiles/16515/templates/dxsys/images/setting.png");
  background-color: #019966;}
.box .icon-links .icon-links-3 {
  background-image: url("https://www.metalnegro.com/__xh__/elsit.swjtu.edu.cn/dfiles/16515/templates/dxsys/images/cooperation.png");
  background-color: #0b81c9;}
.box .icon-links .icon-links-4 {
  background-image: url("https://www.metalnegro.com/__xh__/elsit.swjtu.edu.cn/dfiles/16515/templates/dxsys/images/phone.png");
  background-color: #0099cb;}
.box .icon-links a {
  font-size: 18px;
  color: #fff;}
.aside {
  width: 170px;
  float: left;
  margin-right: 40px;
  margin-left: 20px;}
.aside h3 {
  font-size: 16px;
  font-weight: bolder;
  padding-bottom: 10px;
  color: #003f7f;
  border-bottom: 1px solid #969696;}
.aside h3 a {
  float: right;
  *margin-top: -28px;
  color: #003f7f;
  font-weight: normal;}
.aside ul {
  margin-bottom: 20px;}
.aside li {
  margin-top: 10px;
  margin-bottom: 10px;}
.aside section {
  padding: 12px 7px;
  background-color: #f2f2f2;
  display: table;}
.aside section img {
  float: left;
  width: 57px;
  height: 73px;
  margin-right: 10px;}
.aside section p {
  font-size: 12px;
  display: table-cell;
  vertical-align: middle;
  text-align: center;
  word-break: keep-all;}
.aside section::after {
  content: '';
  display: block;
  clear: both;}
.content {
  float: right;}
.content .notice-infor {
  float: left;
  width: 418px;
  margin-right: 30px;}
.content .notice-infor ul {
  margin-left: 24px;}
.content .notice-infor li {
  padding-top: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid #d9d9d9;}
.content .notice-infor .date {
  color: #fff;
  background-color: #003f7f;
  padding: 5px;
  margin-right: 10px;}
.content .notice-infor a {
  color: #003f7f;}
.content .acad-repo {
  float: right;
  width: 418px;}
.content .acad-repo .table-cell {
  display: table-cell;
  vertical-align: middle;
  height: 60px;}
.content .acad-repo .table-cell a {
  font-size: 18px;
  color: #003a6c;}
.content .acad-repo li::after {
  content: '';
  display: block;
  clear: both;}
.content .acad-repo li {
  margin-top: 18px;
  height: 60px;
  margin-bottom: 18px;}
.content .acad-repo li a {
  display: inline-block;
  vertical-align: middle;}
.content .acad-repo .date {
  float: left;
  text-align: center;
  margin-right: 10px;
  padding: 10px;
  color: #1d7aa7;
  background-color: #d9d9d9;}
.content .acad-repo .day {
  font-size: 18px;}
.content .acad-repo .month {
  font-size: 10px;}
.title {
  height: 50px;
  color: #053776;
  margin-bottom: 22px;
  background-color: #d9d9d9;}
.title h3 {
  text-indent: 0;
  margin-left: 20px;
  font-size: 24px;
  line-height: 50px;
  font-weight: bolder;}
.title h3 a {
  float: right;
  font-weight: normal;
  color: #053776;
  margin-right: 16px;
  font-size: 16px;
  *margin-top: -40px;}
.bg2 {
  background-color: #003263;}
.footer {
  height: 123px;
  padding-bottom: 0;
  padding-top: 55px !important;
  position: relative;
  background: url("https://www.metalnegro.com/__xh__/elsit.swjtu.edu.cn/dfiles/16515/templates/dxsys/images/footer.png") no-repeat left 55px;}
.footer .qr-group {
  position: absolute;
  right: -40px;
  top: 50px;}
.footer .qr-group .qr-item {
  float: left;
  margin-left: 10px;
  text-align: center;}
.footer .qr-group .qr-item:hover {
  cursor: pointer;}
.footer .qr-group .hide {
  visibility: hidden;}
.footer .qr-group .wx:hover ~ .wechatQR, .footer .qr-group .wb:hover ~ .weiboQR {
  visibility: visible;}
.footer .qr-group .wechatQR {
  position: relative;
  left: 14px;}
.footer .qr-group .weiboQR {
  position: relative;
  left: -81px;}
.ul-wrapper {
  border-left: 1px solid #fff;
  border-right: 1px solid #fff;
  width: 306px;
  margin: 0 auto;
  padding-left: 40px;
  padding-right: 40px;
  overflow: hidden;}
.links {
  color: #fff;
  overflow: hidden;}
.links li {
  padding-left: 8px;
  padding-right: 8px;
  float: left;
  margin-top: 5px;
  margin-bottom: 5px;}
.links a {
  color: #fff;
  font-size: 14px;
  line-height: 1;}
footer {
  width: 100%;
  min-width: 1100px;
  background-color: #b50729;
  border-top: 1px solid #aaaaaa;
  color: #fff;}
footer .box {
  margin-top: 0;
  padding-top: 40px;}
footer address {
  height: 38px;
  position: relative;
  font-style: normal;}
footer address p {
  font-size: 11px;
  text-align: center;
  line-height: 38px;}
@media all and (min-width: 1440px) {
  .box .img-wrapper section .desc {
    line-height: 24px;}
}