/* 清除默认样式代码 */
/* 去除常见标签默认的 margin 和 padding */
* {
  margin: 0;
  padding: 0;
}

/*去除所有元素由于加了边框让盒子变大的情况*/
* {
  box-sizing: border-box;
}

/* 设置网页统一的字体大小、行高、字体系列相关属性 */
body {
  font:
    16px/1.5 "Helvetica Neue",
    Helvetica,
    Arial,
    "Microsoft Yahei",
    "Hiragino Sans GB",
    "Heiti SC",
    "WenQuanYi Micro Hei",
    sans-serif;
  color: #333;
}

/* 去除列表默认样式 */
ul,
ol {
  list-style: none;
}
/*让button 按钮 变成小手*/
button {
  cursor: pointer;
}
/* 让所有斜体不倾斜 */
em,
i {
  font-style: normal;
}

/* 去除a标签默认下划线，并设置默认文字颜色 */
a {
  text-decoration: none;
  color: #333;
}

/* 设置img的垂直对齐方式为居中对齐，去除img默认下间隙 */
img {
  vertical-align: middle;
}

/* 去除input默认样式 */
input,
button {
  cursor: pointer;
  border: none;
  outline: none;
  color: #333;
}

/* 左浮动 */
.fl {
  float: left;
}

/* 右浮动 */
.fr {
  float: right;
}

/* 双伪元素清除法 */
.clearfix::before,
.clearfix::after {
  content: "";
  display: table;
}

.clearfix::after {
  clear: both;
}

/* 导航「下载」悬停下拉 */
.wrapper .navbar .download {
  cursor: pointer;
}

.wrapper .navbar .download-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 180px;
  padding: 10px 0;
  background: #fff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  pointer-events: none;
  z-index: 110;
  transition:
    opacity 0.25s ease,
    transform 0.25s ease,
    visibility 0.25s ease;
}

.wrapper .navbar .download:hover .download-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.wrapper .navbar .download-dropdown a {
  display: block;
  line-height: 31px;
  font-size: 16px;
  font-weight: 600;
  color: #212121;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.wrapper .navbar .download-dropdown a:hover {
  color: #0052d9;
}

/* 响应式导航（参照 index copy 折叠菜单） */
.wrapper .navbar .nav-content {
  position: relative;
}

.wrapper .navbar .nav-collapse {
  display: flex;
  flex: 1;
  align-items: center;
  height: 100%;
  min-width: 0;
}

.wrapper .navbar .nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0;
  width: 44px;
  height: 40px;
  padding: 8px 10px;
  margin: 0;
  background-color: #34495e;
  border: 1px solid #2c3e50;
  border-radius: 4px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.wrapper .navbar .nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #ecf0f1;
  border-radius: 1px;
}

.wrapper .navbar .nav-toggle__bar + .nav-toggle__bar {
  margin-top: 4px;
}

@media (max-width: 979px) {
  .wrapper .navbar {
    height: auto;
  }

  .wrapper .navbar .nav-content {
    flex-wrap: wrap;
    align-items: flex-start;
    height: auto;
    min-height: 65px;
    padding-right: 72px;
    box-sizing: border-box;
  }

  .wrapper .navbar .nav-content .logo {
    flex-shrink: 0;
    min-height: 65px;
    display: flex;
    align-items: center;
    height: 34px;
  }

  .wrapper .navbar .nav-toggle {
    display: flex;
    position: absolute;
    right: 24px;
    top: calc((65px - 40px) / 2);
    transform: none;
    z-index: 120;
  }

  .wrapper .navbar .nav-collapse {
    display: none;
    flex: none;
    flex-basis: 100%;
    order: 3;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    height: auto;
    margin: 0 -24px;
    padding: 8px 24px 16px;
    background: #fff;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.06);
  }

  .wrapper .navbar .nav-collapse.is-open {
    display: flex;
  }

  .wrapper .navbar .nav-content .nav-list {
    flex-direction: column;
    align-items: stretch;
    margin-left: 0 !important;
    width: 100%;
    height: auto;
  }

  .wrapper .navbar .nav-content .nav-list li {
    margin-right: 0 !important;
    height: auto;
    width: 100%;
    border-bottom: 1px solid #eee;
  }

  .wrapper .navbar .nav-content .nav-list li a {
    display: block;
    padding: 12px 4px;
    font-size: 16px;
  }

  .wrapper .navbar .nav-content .nav-list .active::after {
    bottom: 0;
    left: 0;
    top: 0;
    width: 3px;
    height: auto;
  }

  .wrapper .navbar .download {
    position: static;
    width: 100%;
    height: auto;
    line-height: 1.5;
    margin-top: 8px;
    padding: 12px 16px;
    text-align: left;
    border-radius: 4px;
    box-sizing: border-box;
  }

  .wrapper .navbar .download:hover .download-dropdown {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .wrapper .navbar .download.is-open .download-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
    min-width: 0;
    margin-top: 8px;
    padding: 4px 0 0;
    box-shadow: none;
    background: transparent;
  }

  .wrapper .navbar .download-dropdown a {
    padding: 8px 0 8px 8px;
    font-size: 15px;
    font-weight: 500;
  }
}

@media (max-width: 576px) {
  .wrapper .navbar .nav-content {
    padding-right: 0;
  }

  .wrapper .navbar .nav-toggle {
    right: 16px;
  }

  .wrapper .navbar .nav-collapse {
    margin-left: -16px;
    margin-right: -16px;
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* 站点页脚 */
.site-footer {
  font-family: "Source Han Sans CN", "Microsoft YaHei", sans-serif;
  background-color: #0a0a0a;
  background-image: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.08) 1px,
    transparent 1px
  );
  background-size: 28px 28px;
  color: rgba(255, 255, 255, 0.85);
}

.site-footer a {
  color: inherit;
  transition: color 0.2s ease;
}

.site-footer a:hover {
  color: #fff;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: 48px 80px;
  padding: 72px 0 40px;
}

.site-footer__nav {
  grid-row: 1 / 3;
  display: flex;
  gap: clamp(48px, 8vw, 120px);
  align-self: start;
}

.site-footer__col {
  min-width: 0;
}

.site-footer__heading {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 20px;
}

.site-footer__links li {
  margin-bottom: 12px;
}

.site-footer__links li:last-child {
  margin-bottom: 0;
}

.site-footer__links a {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.65);
}

.site-footer__links a:hover {
  color: #fff;
}

.site-footer__contact {
  grid-column: 2;
  grid-row: 1;
  text-align: center;
}

.site-footer__contact .site-footer__heading {
  margin-bottom: 16px;
}

.site-footer__qr {
  display: block;
  width: 180px;
  height: auto;
  margin: 0 auto;
}

.site-footer__legal {
  grid-column: 2;
  grid-row: 2;
  align-self: end;
  text-align: center;
  font-size: 12px;
  line-height: 1.8;
  color: #fff;
}

.site-footer__legal p + p {
  margin-top: 4px;
}

.site-footer__beian {
  display: flex;
  align-items: center;
}
.site-footer__beian a + a {
  margin-left: 16px;
}

@media (max-width: 979px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    gap: 40px;
    padding: 56px 0 32px;
  }

  .site-footer__nav {
    grid-row: auto;
    flex-wrap: wrap;
    gap: 32px 48px;
  }

  .site-footer__contact {
    grid-column: auto;
    grid-row: auto;
  }

  .site-footer__legal {
    grid-column: auto;
    grid-row: auto;
    text-align: center;
  }

  .site-footer__beian a {
    display: inline-block;
  }

  .site-footer__beian a + a {
    margin-left: 0;
  }
}

@media (max-width: 576px) {
  .site-footer__nav {
    flex-direction: column;
    gap: 28px;
  }

  .site-footer__qr {
    width: 160px;
  }
}