.footer {
  margin-bottom: 51px;
  color: #fff;
  background: #333333;
}

.footer .footer-top {
  display: none;
}

.footer .footer-bottom {
  padding: 19px 0;
}

.footer .footer-bottom {
  text-align: center;
}

@media (min-width: 768px) {
  .footer {
    margin-bottom: 0;
  }

  .footer .footer-top {
    display: block;
    padding: 48px 0 40px;
  }

  .footer .footer-top .container {
    display: flex;
    flex-wrap: wrap;
    padding: 0;
    justify-content: space-between;
  }

  .footer .item {
    padding: 0 15px;
    max-width: 330px;
    min-width: 220px;
  }

  .footer .tit {
    font-family: "Roboto-B";
    margin-bottom: 17px;
  }

  .footer .item:nth-child(-n+2) .tit {
    position: relative;
  }

  .footer .item:nth-child(-n+2) .tit::after {
    content: '';
    display: block;
    width: 100%;
    height: 2px;
    margin-top: 10px;
    background: #888;
  }

  .footer .item-list>li:not(:last-child) {
    margin-bottom: 15px;
  }

  .footer .logo {
    width: auto;
    height: 60px;
    margin-bottom: 15px;
  }

  .footer .cont-list li {
    display: flex;
    line-height: 1.8;
  }

  .footer .cont-list li:not(:last-child) {
    margin-bottom: 13px;
  }

  .footer .cont-list li p {
    flex: 1;
  }

  .footer .cont-list li i {
    display: inline-block;
    font-size: 20px;
    line-height: 1;
    margin-top: 4px;
    margin-right: 11px;
  }

  .footer .title-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 10px;
    border-bottom: 2px solid #888;
    margin-bottom: 17px;
  }

  .footer .title-wrap .tit {
    margin-bottom: 0;
  }

  .footer .icon-list {
    display: flex;
    align-items: center;
  }

  .footer .icon-list li {
    line-height: 1;
  }

  .footer .icon-list li:not(:last-child) {
    margin-right: 20px;
  }

  .footer .icon-list li a {
    display: inline-block;
  }

  .footer .icon-list li i {
    font-size: 20px;
  }

  .footer .form-control {
    border-radius: 0;
  }

  .footer input.form-control {
    height: 39px;
  }

  .footer textarea.form-control {
    height: 165px;
  }

  .footer .btn-wrap {
    margin-top: 25px;
  }

  .footer .btn {
    width: 111px;
    color: #fff;
    text-align: center;
    padding: 6px 15px;
    border-radius: 20px;
    background-color: var(--style-color);
  }

  .footer .form-control::-webkit-input-placeholder {
    color: #999;
  }

  .footer .form-control:-moz-placeholder {
    color: #999;
  }

  .footer .form-control::-moz-placeholder {
    color: #999;
  }

  .footer .form-control:-ms-input-placeholder {
    color: #999;
  }

  .footer .footer-bottom {
    padding-top: 0;
  }
}

@media (max-width: 991px) {
  .footer .item:nth-child(3), .footer .item:nth-child(4) {
    flex: 0 0 50%;
    max-width: 50%;
    margin-top: 30px;
  }
}

@media (min-width: 992px) {
  .footer .item {
    max-width: 330px;
  }

  .footer .item:nth-child(3) {
    order: 4;
    flex: 0 0 100%;
    max-width: 100%;
    margin-top: 30px;
  }
}

@media (min-width: 1200px) {
  .footer .footer-top {
    padding-bottom: 0;
  }

  .footer .item {
    max-width: 250px;
  }

  .footer .item:nth-child(3) {
    order: 0;
    max-width: 360px;
    margin-top: 0;
  }

  .footer .icon-list li:not(:last-child) {
    margin-right: 20px;
  }

  .footer .item ul>li a, .footer .btn {
    transition: all .3s;
  }

  .footer .item ul>li a:hover,
  .footer .icon-list li a:hover {
    color: var(--style-color);
  }

  .footer .logo {
    height: 80px;
  }

  .footer .btn:hover {
    color: var(--style-color);
    background-color: #fff;
  }

  .footer .footer-bottom {
    text-align: left;
    padding-bottom: 34px;
  }
}

@media (min-width: 1200px) and (max-width: 1439px) {
  .footer .title-wrap {
    display: block;
  }

  .footer .title-wrap .tit {
    margin-bottom: 17px;
  }

  .footer textarea.form-control {
    height: 120px;
  }
}

@media (min-width: 1440px) {
  .footer .item {
    max-width: 300px;
  }

  .footer .item:nth-child(3), .footer .item:nth-child(4) {
    max-width: 400px;
  }

  .footer .tit {
    margin-bottom: 30px;
  }

  .footer .item:nth-child(-n+2) .tit::after {
    margin-top: 21px;
  }

  .footer .title-wrap {
    padding-bottom: 21px;
    margin-bottom: 30px;
  }

  .footer .form-group {
    margin-bottom: 30px;
  }
}

@media (min-width: 1640px) {
  .footer .item {
    max-width: 315px;
  }

  .footer .item:nth-child(3), .footer .item:nth-child(4) {
    max-width: 450px;
  }

  .footer .tit {
    font-size: 30px;
  }

  .footer .logo {
    height: 110px;
  }

  .footer .item-list>li:not(:last-child) {
    margin-bottom: 25px;
  }

  .footer .cont-list li:not(:last-child) {
    margin-bottom: 24px;
  }
}

@media (min-width: 1840px) {
  .footer .item:nth-child(3), .footer .item:nth-child(4) {
    max-width: 515px;
  }
}


/* 手机端底部 */
.mobile-footer {
  width: 100%;
  color: #666;
  text-align: center;
  border-top: 1px solid #ccc;
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: 99;
}

.mobile-footer ul {
  background: #fff;
  padding: 0 15px;
  flex-wrap: nowrap;
  justify-content: space-around;
  display: flex;
}

.mobile-footer li a i {
  width: 20px;
  height: 20px;
  margin: 5px auto 1px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 768px) {
  .mobile-footer {
    display: none;
  }
}