html {
  font-size: 100%;
}

body {
  background: transparent;
}

h1 {
  font-size: 3rem;
  font-weight: 400;
  line-height: 1;
}

h3,
h4,
h5 {
  font-weight: 400;
}

header,
main {
  letter-spacing: .1rem;
}

.btn-lg {
  scale: 1;
}

.btn-success {
  background: #8cbd3e;
}

.btn-primary {
  background: #019aee;
}

.bg-secondary {
  background: #f6f6f2 !important;
}

.header {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
}

.slogan {
  margin-top: 4rem;
  padding: 4rem;
  position: relative;
}

.slogan .icon {
  position: relative;
  margin: auto;
  width: 80px;
  /* 原110px，窄屏缩小 */
  height: 80px;
}

.slogan .icon i {
  position: absolute;
  top: 15px;
  /* 原25px，适配缩小后的容器 */
  left: 0;
  width: 80px;
  color: rgba(0, 0, 0, .6);
  font-size: 42px;
  /* 原62px，窄屏缩小 */
}

/* 媒体查询：大屏恢复原尺寸 */
@media (min-width: 576px) {
  .slogan .icon {
    width: 110px;
    height: 110px;
  }

  .slogan .icon i {
    top: 25px;
    width: 110px;
    font-size: 62px;
  }
}

.tns-outer {
  position: relative;
}

.tns-controls {
  position: absolute;
  top: 50%;
  z-index: 1;
  width: 100%;
}

.tns-controls>button[data-controls="prev"] {
  width: 3rem;
  height: 3rem;
  position: absolute;
  left: -3rem;
  margin-top: -1.5rem;
  background-color: #999;
  color: transparent;
  -webkit-mask: url(data:image/svg+xml;charset=utf8,%3Csvg%20id=%22i-chevron-left%22%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%2032%2032%22%20width=%2232%22%20height=%2232%22%20fill=%22none%22%20stroke=%22currentcolor%22%20stroke-linecap=%22round%22%20stroke-linejoin=%22round%22%20stroke-width=%221%22%3E%0A%20%20%20%20%3Cpath%20d=%22M20%2030%20L8%2016%2020%202%22%20/%3E%0A%3C/svg%3E) no-repeat 50% 50%;
  -webkit-mask-size: cover;
  mask: url(data:image/svg+xml;charset=utf8,%3Csvg%20id=%22i-chevron-left%22%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%2032%2032%22%20width=%2232%22%20height=%2232%22%20fill=%22none%22%20stroke=%22currentcolor%22%20stroke-linecap=%22round%22%20stroke-linejoin=%22round%22%20stroke-width=%221%22%3E%0A%20%20%20%20%3Cpath%20d=%22M20%2030%20L8%2016%2020%202%22%20/%3E%0A%3C/svg%3E) no-repeat 50% 50%;
  mask-size: cover;
}

.tns-controls>button[data-controls="next"] {
  width: 3rem;
  height: 3rem;
  position: absolute;
  margin-top: -1.5rem;
  background-color: #999;
  color: transparent;
  right: -3rem;
  -webkit-mask: url(data:image/svg+xml;charset=utf8,%3Csvg%20id=%22i-chevron-right%22%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%2032%2032%22%20width=%2232%22%20height=%2232%22%20fill=%22none%22%20stroke=%22currentcolor%22%20stroke-linecap=%22round%22%20stroke-linejoin=%22round%22%20stroke-width=%221%22%3E%0A%20%20%20%20%3Cpath%20d=%22M12%2030%20L24%2016%2012%202%22%20/%3E%0A%3C/svg%3E) no-repeat 50% 50%;
  -webkit-mask-size: cover;
  mask: url(data:image/svg+xml;charset=utf8,%3Csvg%20id=%22i-chevron-right%22%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%2032%2032%22%20width=%2232%22%20height=%2232%22%20fill=%22none%22%20stroke=%22currentcolor%22%20stroke-linecap=%22round%22%20stroke-linejoin=%22round%22%20stroke-width=%221%22%3E%0A%20%20%20%20%3Cpath%20d=%22M12%2030%20L24%2016%2012%202%22%20/%3E%0A%3C/svg%3E) no-repeat 50% 50%;
  mask-size: cover;
}

.tns-outer [aria-controls],
.tns-outer [data-action] {
  display: none;
}

.parter img {
  width: 85px;
  height: 85px;
  margin-right: 25px;
}

.qrcode img {
  width: 200px;
  height: 200px;
  margin: auto;
}