.box-title {
  text-align: center;
  font-size: 26px;
  font-weight: normal;
  position: relative;
  letter-spacing: 2px;
}

.box-title:after {
  content: "";
  position: absolute;
  width: 60px;
  height: 2px;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
}

.box-title-black {
  color: #000000;
}

.box-title-black:after {
  background: #0073d3;
}

.box-title-white {
  color: #ffffff;
}

.box-title-white:after {
  background: #4be0ff;
}

.box-title-yellow {
  color: #ffffff;
}

.box-title-yellow:after {
  background: #ffbd4b;
}

.title-line {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 70px;
}

.title-line::before,
.title-line::after {
  content: "";
  flex: 1;
  height: 1px;
  width: 150px;
  background: #d2d2d2;
}

.title-line span {
  margin: 0 30px;
  font-weight: 700;
  font-size: 36px;
  color: #000;
  letter-spacing: 4px;
}

.box1 {
  background: url("../cn_images/energy_manage/box1.png") no-repeat center;
  -webkit-background-size: cover;
  background-size: cover;
  width: 100%;
  height: 350px;
}

.box2 {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.box2-content {
  display: flex;
  justify-content: space-between;
  width: 1200px;
  margin-top: 65px;
}

.box2-content-left,
.box2-content-right {
  -webkit-background-size: cover;
  background-size: cover;
  width: 520px;
  height: 400px;
  padding-top: 70px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.box2-content-left {
  background: url("../cn_images/energy_manage/box2_left.png") no-repeat center;
}

.box2-content-right {
  background: url("../cn_images/energy_manage/box2_right.png") no-repeat center;
}

.box2-content-left p,
.box2-content-right p {
  text-shadow: 0 0 6px rgba(0, 0, 0, 0.16);
  color: #ffffff;
  font-size: 14px;
  line-height: 24px;
  text-align: center;
  margin-bottom: 38px;
}

.box2-content-left h3,
.box2-content-right h3 {
  font-weight: 700;
  font-size: 20px;
  text-align: center;
  color: #fff;
  margin-bottom: 20px;
}

.box2-content-item {
  width: 360px;
  height: 207px;
  border-radius: 5px;
  background: #f8f9ff;
  text-align: center;
  position: relative;
  margin-top: 75px;
}

.box2-content-item img {
  width: 100px;
  height: 112px;
  position: absolute;
  top: -52px;
  left: 50%;
  transform: translateX(-50%);
}

.box2-content-item .text-box {
  width: 100%;
  position: absolute;
  bottom: 0;
  padding: 30px;
  text-align: center;
}

.box2-content-item .text-box .box-title {
  font-size: 18px;
  font-weight: bold;
  color: #333;
  margin: 10px 0;
  text-align: center;
}

.box2-content-item .text-box p {
  font-size: 14px;
  color: #666;
  line-height: 1.5;
  letter-spacing: 2px;
  font-weight: 500;
}
.box2-content-item .text-box .box-content {
  padding: 0 10px;
}


.box3 {
  background: url("../cn_images/energy_manage/box3.png") no-repeat center;
  -webkit-background-size: cover;
  background-size: cover;
  height: 562px;
  margin: 39px 331px 51px 331px;
}

.box4 {
  position: relative;
  width: 100%;
  height: 520px;
  background: #4d8eff;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.box4 .box4-img {
  width: 1100px;
  height: 520px;
  position: absolute;
  right: 91px;
  top: 0;
}

.box4-content {
  width: 1000px;
}

.box4-title {
  font-size: 36px;
  font-weight: 700;
  color: #ffffff;
  padding-top: 100px;
  margin-bottom: 50px;
  letter-spacing: 4px;
}

.box4-content-item {
  display: flex;
  align-items: center;
  margin-bottom: 30px;
}

.box4-content-item img {
  width: 65px;
  height: 65px;
  margin-right: 31px;
}

.text-box {
  text-align: left;
}

.text-box .box-title {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 16px 0;
  color: #ffffff;
  text-align: left;
  letter-spacing: 2px;
}

.text-box p {
  font-size: 14px;
  color: #ffffff;
  font-weight: 300;
  letter-spacing: 1px;
}

.box5 {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.box5-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 1205px;
  height: 329px;
  border-radius: 5px;
  background: transparent;
  border: 1px solid #dde4ef;
  margin-top: 62px;
  margin-bottom: 80px;
}

.box5-content-right {
  -webkit-background-size: cover;
  background-size: cover;
  width: 585px;
  height: 329px;
  border-radius: 5px;
  background: url("../cn_images/energy_manage/box5_img.png") no-repeat center;
}

.box5-content-item {
  display: flex;
  margin-bottom: 40px;
  align-items: center;
}

.box5-content-item:last-child {
  margin-bottom: 0;
}

.box5-content-item .box5-img1 {
  margin-left: 104px;
  width: 42px;
  height: 42px;
  margin-right: 20px;
}

.box5-content-item .box5-img2 {
  margin-left: 94px;
  width: 52px;
  height: 52px;
  margin-right: 20px;
}

.box5-content-item .box5-img3 {
  margin-left: 99px;
  width: 49px;
  height: 49px;
  margin-right: 20px;
}


.box5-content-item .text-box {
  display: flex;
  flex-direction: column;
}

.box5-content-item .text-box .box-title {
  font-weight: 700;
  font-size: 20px;
  text-align: left;
  color: #000;
  margin-bottom: 10px;
}

.box5-content-item .text-box p {
  font-weight: 300;
  font-size: 16px;
  text-align: center;
  color: #000;
}

.box6 {
  background: url("../cn_images/energy_manage/box6.png") no-repeat center;
  -webkit-background-size: cover;
  background-size: cover;
  width: 100%;
  height: 520px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.box6-content {
  width: 1000px;
}

.box6-title {
  font-size: 36px;
  font-weight: 700;
  color: #ffffff;
  padding-top: 100px;
  margin-bottom: 50px;
  letter-spacing: 4px;
}

.box6-content-item {
  display: flex;
  align-items: center;
  margin-bottom: 30px;
  letter-spacing: 1px;
}

.box7 {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.box7-sub-title {
  margin-top: 20px;
  margin-bottom: 63px;
}

.box7-sub-title span {
  font-weight: 300;
  font-size: 16px;
  text-align: left;
  color: #000;
}

.box7-content {
  background: url("../cn_images/energy_manage/box7_img.png") no-repeat center;
  -webkit-background-size: cover;
  background-size: cover;
  width: 1200px;
  height: 336px;
  position: relative;
  margin-bottom: 98px;
}

.box7-content-item {
  padding: 0 20px;
  height: 52px;
  border-radius: 26px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.box7-content-item img {
  width: 40px;
  height: 40px;
}

.box7-content-item p {
  font-weight: 400;
  font-size: 20px;
  color: #000;
}

.box7-content-item-box1 {
  position: absolute;
  left: 491px;
  top: 144px;
}

.box7-content-item-box2 {
  position: absolute;
  left: 670px;
  top: 102px;
}

.box7-content-item-box3 {
  position: absolute;
  left: 907px;
  top: 52px;
}

.box8 {
  background: url("../cn_images/energy_manage/box8.png") no-repeat center;
  -webkit-background-size: cover;
  background-size: cover;
  width: 100%;
  height: 450px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.box8 .box8-title {
  margin-top: 0;
  padding-top: 141px;
}

.box8-sub-title {
  text-align: center;
  padding-top: 59px;
  color: #000000;
  font-size: 36px;
  font-weight: 300;
  letter-spacing: 3.6px;
}

.box8-sub-title span {
  color: #4285fe;
  font-size: 36px;
  font-weight: 700;
}

.bg-bottom {
  background: url("../cn_images/common/bg_bottom.png") no-repeat center;
  -webkit-background-size: cover;
  background-size: cover;
  width: 100%;
  height: 322px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.bg-bottom-title {
  font-weight: 400;
  font-size: 36px;
  letter-spacing: 10px;
  line-height: 60px;
  text-align: center;
  color: #fff;
}

.bg-bottom-sub-title {
  font-weight: 400;
  font-size: 14px;
  letter-spacing: 1px;
  line-height: 34px;
  text-align: center;
  color: #fff;
}

.input-button-group {
  display: flex;
  margin-top: 20px;
}

.input-button-group input {
  border: none;
  outline: none;
  width: 289px;
  height: 60px;
  border-radius: 5px 0 0 5px;
  background: #f2f3f5;
  padding-left: 10px;
}

.input-button-group input::placeholder {
  font-size: 14px;
  line-height: 28px;
  color: #86909e;
}

.input-button-group button {
  color: white;
  cursor: pointer;
  width: 139px;
  height: 60px;
  border-radius: 0 5px 5px 0;
  background: #1664ff;
  border: none;
}