/* 
 * 所有页面公共样式，html文件引入
*/
/*! normalize.css v7.0.0 | MIT License | github.com/necolas/normalize.css */
/* Document
   ========================================================================== */
/**
 * 1. Correct the line height in all browsers.
 * 2. Prevent adjustments of font size after orientation changes in
 *    IE on Windows Phone and in iOS.
 */
 html {
    line-height: 1.15;
    /* 1 */
    -ms-text-size-adjust: 100%;
    /* 2 */
    -webkit-text-size-adjust: 100%;
    /* 2 */
  }
  /* Sections
     ========================================================================== */
  /**
   * Remove the margin in all browsers (opinionated).
   */
  body {
    margin: 0;
  }
  /**
   * Add the correct display in IE 9-.
   */
  article,
  aside,
  footer,
  header,
  nav,
  section {
    display: block;
  }
  /**
   * Correct the font size and margin on `h1` elements within `section` and
   * `article` contexts in Chrome, Firefox, and Safari.
   */
  h1 {
    font-size: 2em;
    margin: 0.67em 0;
  }
  /* Grouping content
     ========================================================================== */
  /**
   * Add the correct display in IE 9-.
   * 1. Add the correct display in IE.
   */
  figcaption,
  figure,
  main {
    /* 1 */
    display: block;
  }
  /**
   * Add the correct margin in IE 8.
   */
  figure {
    margin: 1em 40px;
  }
  /**
   * 1. Add the correct box sizing in Firefox.
   * 2. Show the overflow in Edge and IE.
   */
  hr {
    -webkit-box-sizing: content-box;
    -moz-box-sizing: content-box;
    box-sizing: content-box;
    /* 1 */
    height: 0;
    /* 1 */
    overflow: visible;
    /* 2 */
  }
  /**
   * 1. Correct the inheritance and scaling of font size in all browsers.
   * 2. Correct the odd `em` font sizing in all browsers.
   */
  pre {
    font-family: monospace, monospace;
    /* 1 */
    font-size: 1em;
    /* 2 */
  }
  /* Text-level semantics
     ========================================================================== */
  /**
   * 1. Remove the gray background on active links in IE 10.
   * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
   */
  a {
    background-color: transparent;
    /* 1 */
    -webkit-text-decoration-skip: objects;
    /* 2 */
  }
  /**
   * 1. Remove the bottom border in Chrome 57- and Firefox 39-.
   * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
   */
  abbr[title] {
    border-bottom: none;
    /* 1 */
    text-decoration: underline;
    /* 2 */
    -webkit-text-decoration: underline dotted;
    -moz-text-decoration: underline dotted;
    text-decoration: underline dotted;
    /* 2 */
  }
  /**
   * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
   */
  b,
  strong {
    font-weight: inherit;
  }
  /**
   * Add the correct font weight in Chrome, Edge, and Safari.
   */
  b,
  strong {
    font-weight: bolder;
  }
  /**
   * 1. Correct the inheritance and scaling of font size in all browsers.
   * 2. Correct the odd `em` font sizing in all browsers.
   */
  code,
  kbd,
  samp {
    font-family: monospace, monospace;
    /* 1 */
    font-size: 1em;
    /* 2 */
  }
  /**
   * Add the correct font style in Android 4.3-.
   */
  dfn {
    font-style: italic;
  }
  /**
   * Add the correct background and color in IE 9-.
   */
  mark {
    background-color: #ff0;
    color: #000;
  }
  /**
   * Add the correct font size in all browsers.
   */
  small {
    font-size: 80%;
  }
  /**
   * Prevent `sub` and `sup` elements from affecting the line height in
   * all browsers.
   */
  sub,
  sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
  }
  sub {
    bottom: -0.25em;
  }
  sup {
    top: -0.5em;
  }
  /* Embedded content
     ========================================================================== */
  /**
   * Add the correct display in IE 9-.
   */
  audio,
  video {
    display: inline-block;
  }
  /**
   * Add the correct display in iOS 4-7.
   */
  audio:not([controls]) {
    display: none;
    height: 0;
  }
  /**
   * Remove the border on images inside links in IE 10-.
   */
  img {
    border-style: none;
  }
  /**
   * Hide the overflow in IE.
   */
  svg:not(:root) {
    overflow: hidden;
  }
  /* Forms
     ========================================================================== */
  /**
   * 1. Change the font styles in all browsers (opinionated).
   * 2. Remove the margin in Firefox and Safari.
   */
  button,
  input,
  optgroup,
  select,
  textarea {
    font-family: sans-serif;
    /* 1 */
    font-size: 100%;
    /* 1 */
    line-height: 1.15;
    /* 1 */
    margin: 0;
    /* 2 */
  }
  /**
   * Show the overflow in IE.
   * 1. Show the overflow in Edge.
   */
  button,
  input {
    /* 1 */
    overflow: visible;
  }
  /**
   * Remove the inheritance of text transform in Edge, Firefox, and IE.
   * 1. Remove the inheritance of text transform in Firefox.
   */
  button,
  select {
    /* 1 */
    text-transform: none;
  }
  /**
   * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
   *    controls in Android 4.
   * 2. Correct the inability to style clickable types in iOS and Safari.
   */
  button,
  html [type="button"],
  [type="reset"],
  [type="submit"] {
    -webkit-appearance: button;
    /* 2 */
  }
  /**
   * Remove the inner border and padding in Firefox.
   */
  button::-moz-focus-inner,
  [type="button"]::-moz-focus-inner,
  [type="reset"]::-moz-focus-inner,
  [type="submit"]::-moz-focus-inner {
    border-style: none;
    padding: 0;
  }
  /**
   * Restore the focus styles unset by the previous rule.
   */
  button:-moz-focusring,
  [type="button"]:-moz-focusring,
  [type="reset"]:-moz-focusring,
  [type="submit"]:-moz-focusring {
    outline: 1px dotted ButtonText;
  }
  /**
   * Correct the padding in Firefox.
   */
  fieldset {
    padding: 0.35em 0.75em 0.625em;
  }
  /**
   * 1. Correct the text wrapping in Edge and IE.
   * 2. Correct the color inheritance from `fieldset` elements in IE.
   * 3. Remove the padding so developers are not caught out when they zero out
   *    `fieldset` elements in all browsers.
   */
  legend {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    /* 1 */
    color: inherit;
    /* 2 */
    display: table;
    /* 1 */
    max-width: 100%;
    /* 1 */
    padding: 0;
    /* 3 */
    white-space: normal;
    /* 1 */
  }
  /**
   * 1. Add the correct display in IE 9-.
   * 2. Add the correct vertical alignment in Chrome, Firefox, and Opera.
   */
  progress {
    display: inline-block;
    /* 1 */
    vertical-align: baseline;
    /* 2 */
  }
  /**
   * Remove the default vertical scrollbar in IE.
   */
  textarea {
    overflow: auto;
  }
  /**
   * 1. Add the correct box sizing in IE 10-.
   * 2. Remove the padding in IE 10-.
   */
  [type="checkbox"],
  [type="radio"] {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    /* 1 */
    padding: 0;
    /* 2 */
  }
  /**
   * Correct the cursor style of increment and decrement buttons in Chrome.
   */
  [type="number"]::-webkit-inner-spin-button,
  [type="number"]::-webkit-outer-spin-button {
    height: auto;
  }
  /**
   * 1. Correct the odd appearance in Chrome and Safari.
   * 2. Correct the outline style in Safari.
   */
  [type="search"] {
    -webkit-appearance: textfield;
    /* 1 */
    outline-offset: -2px;
    /* 2 */
  }
  /**
   * Remove the inner padding and cancel buttons in Chrome and Safari on macOS.
   */
  [type="search"]::-webkit-search-cancel-button,
  [type="search"]::-webkit-search-decoration {
    -webkit-appearance: none;
  }
  /**
   * 1. Correct the inability to style clickable types in iOS and Safari.
   * 2. Change font properties to `inherit` in Safari.
   */
  ::-webkit-file-upload-button {
    -webkit-appearance: button;
    /* 1 */
    font: inherit;
    /* 2 */
  }
  /* Interactive
     ========================================================================== */
  /*
   * Add the correct display in IE 9-.
   * 1. Add the correct display in Edge, IE, and Firefox.
   */
  details,
  menu {
    display: block;
  }
  /*
   * Add the correct display in all browsers.
   */
  summary {
    display: list-item;
  }
  /* Scripting
     ========================================================================== */
  /**
   * Add the correct display in IE 9-.
   */
  canvas {
    display: inline-block;
  }
  /**
   * Add the correct display in IE.
   */
  template {
    display: none;
  }
  /* Hidden
     ========================================================================== */
  /**
   * Add the correct display in IE 10-.
   */
  [hidden] {
    display: none;
  }
  /* grid布局 
   * 使用: 
   * 1. 在本文件最后加入相应的样式 格式见最后
   * 2. html写法
   * <div class="container">
   *  <div class="grid squ-grid-4"></div>
   *  <div class="grid squ-grid-4"></div>
   *  <div class="grid squ-grid-4"></div>
   * </div>
  */
  /* -----------------------------------------
   * 上面代码均为函数，不会生成对应的样式
   * -----------------------------------------
  */
  .container {
    overflow: hidden;
    width: 100%;
    font-size: 0;
  }
  .container .grid:first-child {
    margin-left: 0;
  }
  .container .grid:last-child {
    margin-right: 0;
  }
  .grid-3 {
    display: inline-block;
    width: 17.5%;
    margin: 0 5%;
  }
  .grid-4 {
    display: inline-block;
    width: 32.4%;
    margin: 0 0.7%;
  }
  .grid-6 {
    display: inline-block;
    width: 48%;
    margin: 0 2%;
  }
  .grid-2-no-mar {
    display: inline-block;
    width: 16.66666667%;
    margin: 0 0;
  }
  .grid-3-no-mar {
    display: inline-block;
    width: 25%;
    margin: 0 0;
  }
  .grid-6-no-mar {
    display: inline-block;
    width: 50%;
    margin: 0 0;
  }
  .grid-10-no-mar {
    display: inline-block;
    width: 83.33333333%;
    margin: 0 0;
  }
  .squ-grid-3 {
    height: 0;
    padding-bottom: 33.33333333%;
    display: inline-block;
    width: 33.33333333%;
    margin: 0 0;
  }
  .squ-grid-6 {
    height: 0;
    padding-bottom: 50%;
    display: inline-block;
    width: 50%;
    margin: 0 0;
  }
  #header {
    position: fixed;
    z-index: 1000;
    top: 0;
    right: 0;
    left: 0;
  }
  @media screen and (max-width: 767px) {
    #header {
      height: 51px;
      padding: 0;
      background: #000;
    }
    #header .section-wrap {
      overflow: visible;
    }
    #header .menu {
      overflow: hidden;
      width: 100%;
      height: 0;
      -webkit-transition: 0.2s all 0.2s ease-out;
      -o-transition: 0.2s all 0.2s ease-out;
      transition: 0.2s all 0.2s ease-out;
      background: #000;
    }
    #header .menu.close {
      height: 210px;
    }
    #header li {
      height: 45px;
      text-align: right;
      line-height: 45px;
    }
    #header li.active a {
      color: #fff;
    }
    #header li a {
      padding-right: 5%;
      color: #858585;
      color: rgba(255, 255, 255, 0.65);
      font-family: CircularStdBook;
      font-size: 17px;
    }
  }
  @media screen and (min-width: 768px) {
    #header {
      height: 56px;
      padding: 0 3.4%;
    }
    #header .menu {
      float: right;
      margin-right: -1px;
    }
    #header ul {
      position: relative;
    }
    #header li {
      display: inline-block;
      margin-right: 20px;
      margin-left: 38px;
    }
    #header li a {
      display: inline-block;
      height: 35px;
      padding-top: 19px;
      -webkit-transition: all .8s;
      -o-transition: all .8s;
      transition: all .8s;
      letter-spacing: .6px;
      color: #fff;
      font-family: CircularStdBook, Helvetica;
      font-size: 16px;
    }
    #header li.active .line {
      width: 100%;
    }
    #header li:hover .line {
      width: 100%;
    }
    #header .line {
      display: block;
      width: 0;
      height: 2px;
      margin-top: 2px;
      -webkit-transition: all 0.3s;
      -o-transition: all 0.3s;
      transition: all 0.3s;
      background: #fff;
    }
  }
  #header .logo {
    height: 29px;
    margin-top: 15px;
  }
  @media screen and (max-width: 767px) {
    #header .logo {
      height: 26px;
      margin-top: 12px;
      margin-bottom: 9px;
      margin-left: 12px;
    }
  }
  @media screen and (min-width: 768px) {
    .mobile-toggle-btn {
      display: none;
    }
  }
  @media screen and (max-width: 767px) {
    .mobile-toggle-btn {
      float: right;
      width: 48px;
      height: 48px;
      margin-bottom: 3px;
      cursor: pointer;
    }
    .mobile-toggle-btn .wrap {
      height: 100%;
      -webkit-transition: -webkit-transform 0.25s 0.2s;
      transition: -webkit-transform 0.25s 0.2s;
      -o-transition: -o-transform 0.25s 0.2s;
      transition: transform 0.25s 0.2s;
      transition: transform 0.25s 0.2s, -webkit-transform 0.25s 0.2s, -o-transform 0.25s 0.2s;
      -webkit-transform: rotate(0);
      -ms-transform: rotate(0);
      -o-transform: rotate(0);
      transform: rotate(0);
    }
    .mobile-toggle-btn .wrap span {
      position: absolute;
      left: 16px;
      display: block;
      width: 17px;
      height: 1px;
      background: #fff;
    }
    .mobile-toggle-btn .top-line {
      top: 23px;
      -webkit-transition: 0.2s -webkit-transform  0.2s;
      transition: 0.2s -webkit-transform  0.2s;
      -o-transition: 0.2s -o-transform  0.2s;
      transition: 0.2s transform  0.2s;
      transition: 0.2s transform  0.2s, 0.2s -webkit-transform  0.2s, 0.2s -o-transform  0.2s;
      -webkit-transform: translateY(-3px);
      -ms-transform: translateY(-3px);
      -o-transform: translateY(-3px);
      transform: translateY(-3px);
    }
    .mobile-toggle-btn .bottom-line {
      bottom: 23px;
      -webkit-transition: 0.2s -webkit-transform  0.2s;
      transition: 0.2s -webkit-transform  0.2s;
      -o-transition: 0.2s -o-transform  0.2s;
      transition: 0.2s transform  0.2s;
      transition: 0.2s transform  0.2s, 0.2s -webkit-transform  0.2s, 0.2s -o-transform  0.2s;
      -webkit-transform: translateY(3px);
      -ms-transform: translateY(3px);
      -o-transform: translateY(3px);
      transform: translateY(3px);
    }
    .mobile-toggle-btn .wrap-bottom {
      margin-top: -100%;
    }
  }
  .mobile-toggle-btn.close .wrap-top {
    -webkit-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    -o-transform: rotate(45deg);
    transform: rotate(45deg);
  }
  .mobile-toggle-btn.close .wrap-bottom {
    -webkit-transform: rotate(-45deg);
    -ms-transform: rotate(-45deg);
    -o-transform: rotate(-45deg);
    transform: rotate(-45deg);
  }
  .mobile-toggle-btn.close .top-line,
  .mobile-toggle-btn.close .bottom-line {
    -webkit-transform: translateY(0);
    -ms-transform: translateY(0);
    -o-transform: translateY(0);
    transform: translateY(0);
  }
  @media screen and (min-width: 768px) {
    .header-clone {
      position: fixed;
      z-index: 1;
      top: 0;
      left: 0;
      width: 100%;
      height: 56px;
      background: #000000;
      background: rgba(0, 0, 0, 0.7);
    }
  }
  #footer ul {
    margin: 8.7% 0 0;
    text-align: center;
    font-size: 0;
  }
  @media screen and (max-width: 639px) {
    #footer ul {
      margin-top: 4%;
    }
  }
  #footer li {
    display: inline-block;
    margin: 0 5%;
  }
  @media screen and (max-width: 639px) {
    #footer li {
      display: block;
      padding: 2.5% 4%;
      text-align: left;
    }
  }
  @media screen and (max-width: 767px) {
    #footer li {
      margin: 0 3%;
    }
  }
  #footer a {
    color: #221815;
    font-weight: 600;
    font-size: 16px;
  }
  @media screen and (max-width: 639px) {
    #footer a {
      margin-top: 6.7%;
      font-size: 13px;
    }
  }
  #footer .copyright {
    margin: 4%;
    text-align: center;
    opacity: 0.5;
    font-size: 12px;
  }
  @media screen and (max-width: 639px) {
    #footer .copyright {
      margin: 12% 10% 0;
      text-align: left;
      font-size: 10px;
    }
  }
  /*
   * 定义公共变量
  */
  * {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
  }
  html,
  body {
    height: 100%;
    color: #221815;
  }
  ul,
  li {
    margin: 0;
    padding: 0;
    list-style: none;
  }
  a {
    cursor: pointer;
    text-decoration: none;
  }
  .section-wrap {
    position: relative;
    overflow: hidden;
    width: 100%;
    height: 100%;
    margin: 0 auto;
  }
  @media screen and (min-width: 768px) and (max-width: 1023px) {
    .section-wrap {
      width: 100%;
      max-width: 768px;
    }
  }
  @media screen and (min-width: 1024px) and (max-width: 1279px) {
    .section-wrap {
      width: 100%;
      max-width: 1024px;
    }
  }
  @media screen and (min-width: 1280px) {
    .section-wrap {
      width: 100%;
      max-width: 1281px;
    }
  }
  #banner {
    position: relative;
    z-index: 2;
    overflow: hidden;
    width: 100%;
    height: 350px;
    background: url() center center no-repeat;
    -webkit-background-size: cover;
    background-size: cover;
  }
  @media screen and (max-width: 639px) {
    #banner {
      height: 300px;
    }
  }
  #banner h1 {
    position: absolute;
    top: 40%;
    left: 50%;
    width: 100%;
    margin-right: auto;
    margin-left: auto;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -o-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    text-align: center;
    letter-spacing: 1.6px;
  }
  @media screen and (max-width: 639px) {
    #banner h1 {
      top: 57%;
      width: 76%;
      margin: 0 auto;
      letter-spacing: 0;
      font-size: 36px;
      line-height: 51px;
    }
  }
  @media screen and (min-width: 640px) and (max-width: 767px) {
    #banner h1 {
      top: 57%;
      width: 66%;
      margin: 0 auto;
      letter-spacing: 1px;
      font-size: 50px;
      line-height: 60px;
    }
  }
  h1 {
    letter-spacing: 6px;
    color: #fff;
    font-family: CircularStdBold;
    font-size: 70px;
    line-height: 80px;
  }
  h3 {
    margin-bottom: 1.77%;
    text-align: center;
    font-family: CircularStdBold;
  }
  @media screen and (max-width: 639px) {
    h3 {
      margin-top: 18%;
      letter-spacing: 1px;
      font-size: 37px;
    }
  }
  @media screen and (min-width: 640px) {
    h3 {
      margin-top: 14.8%;
      letter-spacing: 4px;
      font-size: 45px;
    }
  }
  @media screen and (min-width: 768px) {
    h3 {
      font-size: 50px;
    }
  }
  p {
    opacity: 0.7;
    font-weight: 600;
    font-size: 16px;
    line-height: 24px;
  }
  p.sub-title {
    padding: 0 15%;
    text-align: center;
    opacity: 0.8;
    font-weight: 600;
  }
  @media screen and (max-width: 639px) {
    p.sub-title {
      padding: 0 4%;
    }
  }
  @media screen and (max-width: 767px) {
    p {
      letter-spacing: 0.1px;
      font-size: 14px;
      line-height: 21px;
    }
  }
  .btn {
    display: block;
    width: 180px;
    height: 42px;
    text-align: center;
    letter-spacing: 0.5px;
    border: 1px solid #fff;
    font-weight: 600;
    font-size: 14px;
    font-size: 12px;
    line-height: 42px;
  }
  @media screen and (max-width: 639px) {
    .btn {
      width: 146px;
      height: 48px;
      line-height: 48px;
    }
  }
  .btn-dark {
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
    opacity: 0.5;
    color: #000;
    border: 2px solid #000;
  }
  .btn-dark:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.2);
  }
  .btn-light {
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
    color: #fff;
    border: 2px solid #fff;
  }
  .btn-light:hover {
    background: rgba(255, 255, 255, 0.3);
  }
  
.env-change {
  color: #fff!important;
}
.env-change > .active {
  color: #fff;
}
.env-change > .no-active {
  color: #858585;
}
.env-change > .no-active:hover {
  color: #fff;
}