:root {
  color-scheme: light;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "PingFang SC", sans-serif;
  background: #ffffff;
  color: #1B1C1F;
  font-size: 14px;
}

.container {
  margin: 0 auto;
}
.header {
  width: 100%;
  height: 70px;
  background: rgba(12,19,24,1);
  display: flex;
  justify-content: center;
  align-items: center;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
}
.header-main {
  width: 1200px;
  height: 70px;
  justify-content: space-between;
  align-items: center;
  display: flex;
}
.header-logo {
  width: 134px;
  height: 28px;
}
.header-tab {
  height: 70px;
  display: flex;
  align-items: center;
  gap: 44px;
}
.header-tab-item {
  font-size: 15px;
  color: #83878F;
  cursor: pointer;
  height: 70px;
  line-height: 70px;
  position: relative;
}

.header-tab-item.active {
  font-weight: 600;
  color: #ffffff;
}

.header-tab-item:hover {
  color: #ffffff;
}

.header-tab-item.active::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 3px;
  background: #6471FF;
  border-radius: 999px;
}

.header-btn {
  width: 100px;
  height: 40px;
  border-radius: 2px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.header-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(100, 113, 255, 0.18);
}

.banner {
  width: 100%;
  height: 778px;
  position: relative;

  .banner-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .banner-mask {
    background: linear-gradient( 270deg, rgba(0,0,0,0) 0%, #000000 100%);
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 710px;
    display: flex;
    justify-content: center;

    .banner-mask-content {
      width: 1200px;
      height: 710px;
      padding-top: 130px;
    }

    .banner-mask-content-title {
      font-size: 56px;
      line-height: 70px;
      color: #ffffff;
    }

    .banner-mask-content-process {
      height: 4px;
      margin: 12px 0 40px 0;
      display: flex;
      align-items: center;

      .process-line {
        width: 580px;
        height: 1px;
        border: 1px solid rgba(255,255,255,0.25);
      }

      .process-active {
        width: 56px;
        height: 4px;
        background: #6471FF;
      }
    }
  }

  .banner-icon {
    width: 8px;
    height: 12px;
    margin-right: 8px;
  }

  .banner-btn {
    width: 144px;
    height: 53px;
    margin-top: 64px;
    font-weight: 600;
    border-radius: 4px;
    font-size: 16px;
    transition: all 0.2s ease;
  }

  .banner-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(100, 113, 255, 0.22);
  }
}

.process {
  width: 100%;
  height: 910px;
  background-image: url('../images/process-bg.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;


  .process-tab {
    width: 1200px;
    margin: 0 auto;
    height: 116px;
    background: #FFFFFF;
    box-shadow: 0px 16px 32px 0px rgba(135,132,139,0.1);
    border-radius: 8px;
    margin-top: -42px;
    position: relative;
    display: grid;
    grid-template-columns: repeat(6, 1fr);

    .process-tab-item {
      display: flex;
      align-items: center;
      padding-left: 24px;

      .process-tab-item-img {
        width: 48px;
        height: 48px;
        margin-right: 12px;
      }

      .process-tab-item-num {
        font-size: 26px;
        line-height: 31px;
        font-weight: 600;
      }
    }
  }

  .procss-main {
    width: 1200px;
    margin: 0 auto;
    text-align: center;

    .process-title {
      font-size: 36px;
      font-weight: 600;
      line-height: 50px;
      margin: 117px 0 10px 0;
    }

    .process-desc {
      font-size: 18px;
      color: #83878F;
      margin-bottom: 44px;
    }

    .process-list {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      height: 142px;

      .process-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        position: relative;
        cursor: pointer;
        .process-item-img {
          width: 72px;
          height: 72px;
        }
        .process-item-title {
          color: #43464D;
          margin-top: 4px;
          text-align: center;
        }

        &.active {
          .process-item-title {
            color: #1B1C1F;
            font-weight: 600;
          }
          &::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: #1B1C1F;
          }
        }
      }
    }

    .process-text {
      flex: 1;
      margin-right: 32px;
      padding-top: 112px;
      font-size: 16px;
      text-align: left;

      .text-title {
        font-size: 24px;

        .title-num {
          color: #6471FF;
          font-size: 26px;
          line-height: 31px;
          margin-right: 8px;
        }
      }

      .text-desc {
        margin: 8px 0 28px 0
      }

      .text-process {
        height: 4px;
        margin: 28px 0 33px 0;
        display: flex;
        align-items: center;
        width: 578px;
        border-bottom: 1px solid #DEE0E3;

        .process-active {
          width: 24px;
          height: 4px;
          background: #1B1C1F;
        }
      }

      .text-tag {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 16px;
        margin-bottom: 30px;
        .tag-icon {
          width: 24px;
          height: 24px;
        }
      }
    }
    .process-tab-bg {
      width: 590px;
      height: 480px;
    }
  }
}


.engine {
  width: 1200px;
  margin: 0 auto;
  height: 680px;
  padding-top: 80px;
  text-align: center;
  .engine-title {
    font-size: 36px;
    line-height: 50px;
    margin-bottom: 10px;
    color: #1B1C1F;
  }
  .engine-desc {
    font-size: 18px;
    color: #83878F;
    line-height: 25px;
    margin-bottom: 48px;
  }
  .engine-main {
    display: flex;
    gap: 20px;

    .engine-box {
      position: relative;
      overflow: hidden;
      cursor: pointer;
      transform-origin: center center;

      .engine-mask {
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        height: 200px;
        background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 1) 100%);
      }

      .engine-box-main {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        padding: 40px 40px 24px 40px;
        color: #ffffff;

        .engine-icon1 {
          width: 28px;
          height: 28px;
          margin-right: 4px;
        }
        .engine-box-desc {
          color: rgba(255,255,255,0.8);
          line-height: 20px;
          text-align: left;
          height: 60px;
          display: flex;
          align-items: flex-end;
          margin: 188px 0 16px 0;
        }
        .engine-box-tag {
          padding: 0 12px;
          margin-right: 8px;
          color: #FAFBFC;
          height: 28px;
          background: rgba(255,255,255,0.1);
          border-radius: 6px;
          border: 1px solid rgba(255,255,255,0.1);
          line-height: 28px;
        }
      }
      .box-other {
        padding-top: 298px;
        font-size: 18px;
        font-weight: 500;
        .other-icon {
          width: 32px;
          height: 32px;
          margin-bottom: 8px;
        }
      }
    }
    .engine-left {
      width: 591px;
      height: 387px;
    }
    .engine-other {
      width: 183px;
      height: 387px;
    }
    .engine-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.28s ease;
      transform-origin: center center;
    }

    .engine-box:hover .engine-img {
      transform: scale(1.08);
    }
  }
}

.technology {
  height: 786px;
  width: 1200px;
  margin: 0 auto;

  .technology-title {
    font-size: 36px;
    line-height: 50px;
    margin-bottom: 36px;
    padding-top: 80px;
    color: #1B1C1F;
  }

  .technology-tab {
    display: flex;
    background: #FAFBFC;
    border-radius: 4px;
    overflow: hidden;

    .technology-tab-item {
      width: 128px;
      height: 42px;
      color: #43464D;
      font-size: 16px;
      text-align: center;
      line-height: 42px;
      cursor: pointer;
      transition: all 0.2s ease;

      &:hover {
        background: rgba(100, 113, 255, 0.06);
      }

      &.active {
        background: rgba(100, 113, 255, 0.11);
        color: #6471FF;
        font-weight: 600;
      }
    }
  }
  .technology-desc {
    margin: 28px 0 48px 0;
    font-size: 16px;
    color: #83878F;
  }

  .technology-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    
    .technology-item {
      height: 400px;
      position: relative;
      color: #ffffff;
      .technology-item-img {
        width: 100%;
        height: 100%;
      }
      .technology-item-mask {
        width: 100%;
        height: 152px;
        background: rgba(84, 87, 92, 0.5);
        border-radius: 0px 0px 4px 4px;
        backdrop-filter: blur(8px);
        position: absolute;
        bottom: 0;
        left: 0;

        .technology-item-icon {
          width: 56px;
          height: 56px;
          margin: -36px 0 8px 24px;
        }
        .technology-item-title {
          font-size: 20px;
          line-height: 28px;
          font-weight: 600;
          padding: 0 24px;
        }
        .technology-item-desc {
          margin-top: 10px;
          line-height: 20px;
          padding: 0 24px;
        }
      }
    }
  }
}

.form {
  width: 100%;
  height: 670px;
  background-image: url('../images/form-bg.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding-top: 77px;
  .form-main {
    width: 1200px;
    margin: 0 auto;
    height: 513px;
    display: flex;
    gap: 20px;

    .form-box {
      flex: 1;
      background: #FFFFFF;
      border-radius: 4px;
      padding: 40px;

      .form-box-title {
        font-size: 36px;
        line-height: 50px;
        color: #1B1C1F;
      }
      .form-box-desc {
        color: #83878F;
        font-size: 16px;
        line-height: 22px;
        margin: 12px 0 203px 0
      }
      .form-line {
        width: 100%;
        height: 1px;
        border: 1px solid;
        border-image: linear-gradient(49deg, rgba(200, 200, 200, 0), rgba(216, 216, 216, 0.5), rgba(151, 151, 151, 0)) 1 1;
      }
      .form-box-chat {
        display: flex;
        height: 74px;
        align-items: center;
        .chat-item {
          flex: 1;
          padding-left: 20px;
          display: flex;
          color: #43464D;
          font-size: 12px;
          line-height: 16px;
          .chat-icon {
            margin-right: 4px;
            width: 14px;
            height: 14px;
          }
          .chat-item-text {
            font-size: 12px;
            font-weight: 600;
            margin-top: 8px;
            line-height: 14px;
          }
        }
        .chat-line {
          width: 1px;
          height: 56px;
          border: 1px solid;
          border-image: linear-gradient(153deg, rgba(200, 200, 200, 0), rgba(216, 216, 216, 0.5), rgba(151, 151, 151, 0)) 1 1;
        }
      }

      .form-group {
        display: flex;
        flex-direction: column;
        gap: 16px;
        margin-bottom: 18px;
      }
      .form-item-group {
        display: flex;
        gap: 16px;
      }
      .form-item {
        flex: 1;
        .form-label {
          font-size: 12px;
          font-weight: 600;
          line-height: 17px;
          margin-bottom: 8px;
        }
        .form-input-box {
          height: 56px;
          background: #F9F9FB;
          border-radius: 4px;
          padding: 0 18px;
          display: flex;
          align-items: center;
          .form-input {
            flex: 1;
            border: 0;
            height: 100%;
            font-size: 16px;
            background: transparent;
            outline: none;
            &::placeholder {
              color: #B5B8BD;
            }
          }
        }
        .form-textarea-box {
          height: 129px;
          padding: 18px;
          .form-textarea {
            font-family: 'PingFang SC', sans-serif;
            resize: none;
            &::placeholder {
              color: #B5B8BD;
            }
          }
        }
      }
    }

    .form-submit-btn {
      width: 100%;
      height: 62px;
      background: #1B1C1F;
      border-radius: 4px;
      font-size: 16px;
      font-weight: 600;
      color: #ffffff;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .form-submit-btn:hover {
      background: #2A2B30;
      transform: translateY(-1px);
      box-shadow: 0 10px 22px rgba(27, 28, 31, 0.18);
    }
  }
}

.contact {
  width: 100%;
  height: 140px;
  background-image: url('../images/contact-bg.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;

  .contact-main {
    width: 1200px;
    height: 140px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #ffffff;
    font-size: 16px;
    line-height: 22px;

    .contact-desc {
      margin-top: 8px;
      font-size: 24px;
      line-height: 33px;
    }

    .contact-btn {
      width: 118px;
      height: 44px;
      background: #FFFFFF;
      border-radius: 2px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 500;
      cursor: pointer;
      color: #000000;
      transition: all 0.2s ease;
      .contact-btn-icon {
        width: 18px;
        height: 18px;
        margin-left: 12px;
        transition: transform 0.2s ease;
      }
      &:hover {
        background: #ffffff;
        transform: translateY(-2px) scale(1.03);
        box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
        .contact-btn-icon {
          transform: translateX(3px);
        }
      }
    }
  }
}

.footer {
  width: 100%;
  height: 349px;
  background: #000000;
  padding-top: 80px;

  .footer-main {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 20px;
    .footer-left {
      width: 792px;
      .footer-logo {
        height: 34px;
      }
      .footer-left-desc {
        line-height: 20px;
        margin: 24px 0;
        color: #ffffff;
        width: 612px;
      }
      .footer-txt {
        color: #B5B8BD;
        margin-top: 3px;
        font-size: 12px;
        line-height: 17px;
      }
    }
    .footer-list {
      width: 184px;
      .list-name {
        font-size: 18px;
        line-height: 25px;
        font-weight: 600;
        color: #ffffff;
        margin-bottom: 24px;
      }
      .list-item {
        margin-bottom: 20px;
        color: #83878F;
        cursor: pointer;
        transition: color 0.2s ease, transform 0.2s ease;
        &:hover {
          color: #ffffff;
          transform: translateX(4px);
        }
      }
    }
  }
}