* {
  margin: 0;
  padding: 0;
  list-style: none;
  box-sizing: border-box;
}
body {
  font-family: Montserrat, Montserrat;
  font-weight: 400;
  padding-top: 100px;
  display: flex;
  flex-direction: column;
}
a,
span {
  display: inline-block;
}

/* header */
header {
  width: 100%;
  height: 100px;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9999999;
  display: flex;
  align-items: center;
  background-color: #fff;
}

header nav {
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 9999999;
}
header nav .logo {
  height: 60px;
}
header nav .logo a {
  width: 100%;
  height: 100%;
  font-size: 32px;
  color: #000000;
  display: flex;
  align-items: center;
  text-decoration: none;
  font-weight: 600;
}
header nav .logo a img {
  width: 60px;
  height: 60px;
  margin-right: 20px;
}
header nav .nav-links {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
header nav .nav-links li {
  margin-right: 40px;
}
header nav .nav-links li a {
  font-weight: 400;
  font-size: 16px;
  color: #222222;
  text-decoration: auto;
}
header nav .nav-links li a:hover {
  color: #1c48f5;
  transition: 0.5s;
}
header nav .nav-links a.active {
  font-weight: 500;
  /* font-size: 20px; */
  color: #1c48f5;
  position: relative;
}
/* header nav .nav-links a.active::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 6px;
  background-color: #1c48f5;
  bottom: -10px;
  left: 0;
  border-radius: 5px;
} */
#Home {
  width: 100%;
  height: 600px;
  display: flex;

  display: flex;
  flex-direction: column;
  background-image: url("../images/DIV@1x (5).png");
  background-repeat: no-repeat;
  background-size: 100% 600px;
}
#Home .container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-top: 80px;
}
#Home .container .box {
  width: 50%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
#Home .container .p1 {
  font-size: 48px;
  font-weight: bold;
  line-height: 48px;
  letter-spacing: 0px;
  font-feature-settings: "kern" on;
  color: #ffffff;
  margin-bottom: 24px;
}
#Home .container .p2 {
  font-size: 18px;
  font-weight: normal;
  line-height: 28px;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #ffffff;
  margin-bottom: 32px;
}
#Home .container .down {
  display: flex;
  align-items: center;
}
#Home .container .down img {
  width: 138px;
  height: 48px;
  margin-right: 16px;
  cursor: pointer;
}
#Home .container .down img:hover {
  transform: scale(1.05);
  transition: all 0.3s ease-in-out;
}
#Advantages {
  width: 100%;
  display: flex;
  padding: 80px;
  background-color: #f9fafb;
}
#Advantages .container {
  display: flex;
  align-items: center;
}
#Advantages .container .list {
  display: flex;
  align-items: center;
  justify-content: space-around;
}
#Advantages .container .list .item {
  width: 30%;
  height: 232px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  box-sizing: border-box;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.001), rgba(0, 0, 0, 0.001)),
    #ffffff;

  box-shadow: 0px 2px 4px -2px rgba(0, 0, 0, 0.1),
    0px 4px 6px -1px rgba(0, 0, 0, 0.1);
  border-radius: 12px;
  cursor: pointer;
}
#Advantages .container .list .item:hover {
  /* 放大 */
  transform: scale(1.01);
  transition: all 0.3s ease-in-out;
  box-shadow: 0px 4px 6px -1px rgba(0, 0, 0, 0.1);
  background-color: #ffffff;
}

#Advantages .container .list .item img {
  width: 64px;
  height: 64px;
  margin-bottom: 12px;
}
#Advantages .container .list .item p {
  font-family: Roboto;
  font-size: 20px;
  font-weight: 600;
  line-height: 28px;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #000000;
  margin-bottom: 12px;
}
#Advantages .container .list .item span {
  font-family: Roboto;
  font-size: 16px;
  font-weight: normal;
  line-height: 24px;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #4b5563;
}

#Products {
  width: 100%;
  display: flex;
  padding: 80px;
  background-color: #efefef;
}
#Products .container {
  display: flex;
  align-items: center;
  flex-direction: column;
}
#Products .container .title {
  font-family: Roboto;
  font-size: 30px;
  font-weight: bold;
  line-height: 36px;
  text-align: center;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #000000;
  margin-bottom: 48px;
  background: rgba(0, 0, 0, 0);
}
#Products .container .list {
  display: flex;
  align-items: center;
  justify-content: space-around;
}
#Products .container .list .item {
  width: 30%;

  display: flex;
  flex-direction: column;
  align-items: flex-start;
  box-sizing: border-box;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.001), rgba(0, 0, 0, 0.001)),
    #ffffff;

  box-shadow: 0px 2px 4px -2px rgba(0, 0, 0, 0.1),
    0px 4px 6px -1px rgba(0, 0, 0, 0.1);
  border-radius: 12px;
  cursor: pointer;
}
#Products .container .list .item:hover {
  transform: scale(1.01);
  transition: all 0.3s ease-in-out;
  box-shadow: 0px 4px 6px -1px rgba(0, 0, 0, 0.1);
  background-color: #ffffff;
}
#Products .container .list .item .box {
  width: 100%;
  padding: 30px;
  box-sizing: border-box;
}
#Products .container .list .item img {
  width: 100%;
  height: auto;
  margin-bottom: 12px;
}
#Products .container .list .item p {
  font-family: Roboto;
  font-size: 20px;
  font-weight: 600;
  line-height: 28px;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #000000;
  margin-bottom: 12px;
}
#Products .container .list .item span {
  font-family: Roboto;
  font-size: 16px;
  font-weight: normal;
  line-height: 24px;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #4b5563;
}
#AboutUs {
  width: 100%;
  display: flex;
  padding: 80px 0;
  background-color: #efefef;
}
#AboutUs .container {
  display: flex;
  align-items: center;
  justify-content: space-around;
}
#AboutUs .container .left {
  width: 50%;
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  padding: 32px;
}
#AboutUs .container .left .p1 {
  font-family: Roboto;
  font-size: 30px;
  font-weight: bold;
  line-height: 36px;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #000000;
  margin-bottom: 24px;
}
#AboutUs .container .left .p2 {
  font-family: Roboto;
  font-size: 16px;
  font-weight: normal;
  line-height: 24px;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #4b5563;
  margin-bottom: 16px;
}
#AboutUs .container .left .list {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#AboutUs .container .left .list .item {
  display: flex;
  flex-direction: column;
  align-items: center;
}
#AboutUs .container .left .list .item span {
  font-family: Roboto;
  font-size: 30px;
  font-weight: bold;
  line-height: 36px;
  text-align: center;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #003b7e;
  margin-bottom: 8px;
}
#AboutUs .container .left .list .item p {
  font-family: Roboto;
  font-size: 16px;
  font-weight: normal;
  line-height: 24px;
  text-align: center;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #4b5563;
}
#AboutUs .container .right {
  width: 584px;
  height: 400px;
}
#ContactUs {
  width: 100%;
  display: flex;
  align-items: center;
  background: #003b7e;
  padding: 80px 0;
}
#ContactUs .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#ContactUs .container .left {
  width: 50%;
  display: flex;
  flex-direction: column;
}
#ContactUs .container .left .p1 {
  font-family: Roboto;
  font-size: 30px;
  font-weight: bold;
  line-height: 36px;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #ffffff;
  margin-bottom: 24px;
}
#ContactUs .container .left .p2 {
  font-family: Roboto;
  font-size: 16px;
  font-weight: normal;
  line-height: 24px;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #ffffff;
}
#ContactUs .container .right {
  width: 100%;
  display: flex;
  flex-direction: column;
  padding: 32px;
  flex-wrap: wrap;
  align-content: flex-start;

  background: #ffffff;
  border-radius: 12px;
}
#ContactUs .container .right .item {
  width: 100%;

  opacity: 1;

  display: flex;
  flex-direction: column;
  margin-bottom: 16px;
  align-items: flex-start;
  background: #ffffff;
  box-sizing: border-box;
  box-sizing: border-box;
}
#ContactUs .container .right .item input {
  width: 100%;
  height: 40px;
  border: none;
  border: 1px solid #d1d5db;

  padding: 12px 16px;
  border-radius: 4px;
}
.error {
  color: red;
  margin-top: 5px;
  display: none;
}
.success {
  color: green;
  margin-top: 10px;
  display: none;
}
#ContactUs .container .right .item input:focus {
  outline: none;
}
#ContactUs .container .right .btn {
  width: 100%;
  height: 48px;
  border-radius: 4px;
  opacity: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  gap: 0px 10px;
  flex-wrap: wrap;
  align-content: flex-start;
  font-size: 16px;
  color: #fff;
  background: #003b7e;
  cursor: pointer;
}
#ContactUs .container .right .btn:hover {
  background: #002c5c;
  transition: all 0.3s ease-in-out;
}
#Footer {
  width: 100%;
  padding: 48px;
  display: flex;
  background-color: #000000;
}
#Footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}
#Footer .container .top {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 32px;
}
#Footer .container .top .left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
#Footer .container .top .left .title {
  font-family: Roboto;
  font-size: 16px;
  font-weight: 600;
  line-height: 24px;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #ffffff;
  margin-bottom: 16px;
}
#Footer .container .top .left p {
  font-family: Roboto;
  font-size: 16px;
  font-weight: normal;
  line-height: 24px;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #9ca3af;
}
#Footer .container .top .right {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
#Footer .container .top .right .title {
  font-family: Roboto;
  font-size: 16px;
  font-weight: 600;
  line-height: 24px;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #ffffff;
  margin-bottom: 16px;
}
#Footer .container .top .right img {
  width: 280px;
  height: 42px;
  margin-bottom: 8px;
  cursor: pointer;
}
#Footer .container .top .right img:hover {
  border: #000000 solid 1px;
}
#Footer .container .bottom {
  width: 100%;
  text-align: center;
  font-family: Roboto;
  font-size: 16px;
  font-weight: normal;
  line-height: 24px;
  text-align: center;
  letter-spacing: 0px;

  font-feature-settings: "kern" on;
  color: #9ca3af;
  padding-top: 33px;
  border-top: 1px solid #1f2937;
}
#backTop {
  width: 32px;
  height: 32px;
  position: fixed;
  bottom: 80px;
  right: 80px;
  z-index: 999;
  cursor: pointer;
  opacity: 0.6;
}
#backTop:hover {
  opacity: 1;
}
#backTop img {
  width: 100%;
  height: 100%;
}