@charset "UTF-8";
html,
body {
  background-color: var(--main-color);
}

.tutorial-fab {
  display: block;
}

.fixed-bg {
  background-color: black;
  position: fixed;
  width: 100%;
  height: 100%;
  inset: 0;
}
.fixed-bg .bg-l {
  background-size: 14px 24px;
  position: absolute;
  background-image: linear-gradient(90deg, #4f4f4f2e 1px, transparent 0), linear-gradient(180deg, #8080800a 1px, transparent 0);
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
}
.fixed-bg .bg-c {
  position: absolute;
  top: -10%;
  right: 0;
  left: 0;
  width: 100%;
  height: 1000px;
  border-radius: 9999px;
  background-image: radial-gradient(circle 400px at 50% 300px, #fbfbfb36, #000);
}

.first-banner {
  width: 100%;
  padding-top: 120px;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  text-align: center;
  color: #fff;
}
.first-banner .line {
  width: 90%;
  height: 1px;
  background: -webkit-gradient(linear, left top, right top, from(#00C863), to(#00BBCE));
  background: linear-gradient(to right, #00C863, #00BBCE);
  opacity: 0.2;
  position: absolute;
  left: 50%;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
  -webkit-animation: opa 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  animation: opa 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
@-webkit-keyframes opa {
  0% {
    opacity: 0.2;
    -webkit-transform: translateX(-50%) translateY(-60px);
    transform: translateX(-50%) translateY(-60px);
  }
  100% {
    opacity: 0;
    -webkit-transform: translateX(-50%) translateY(460px);
    transform: translateX(-50%) translateY(460px);
  }
}
@keyframes opa {
  0% {
    opacity: 0.2;
    -webkit-transform: translateX(-50%) translateY(-60px);
    transform: translateX(-50%) translateY(-60px);
  }
  100% {
    opacity: 0;
    -webkit-transform: translateX(-50%) translateY(460px);
    transform: translateX(-50%) translateY(460px);
  }
}
.first-banner .h-title {
  width: -webkit-fit-content;
  width: -moz-fit-content;
  width: fit-content;
  font-size: 63px;
  color: transparent;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  background: -webkit-gradient(linear, left top, right top, from(#00C863), to(#00BBCE));
  background: linear-gradient(to right, #00C863, #00BBCE);
  -webkit-background-clip: text;
  background-clip: text;
  margin: 0 auto 24px;
  position: relative;
  -webkit-transform: translateY(30px);
  transform: translateY(30px);
  opacity: 0;
  -webkit-animation: moveY 0.7s ease-in-out both;
  animation: moveY 0.7s ease-in-out both;
}
.first-banner .h-title .a-plus {
  position: absolute;
  inset: 0;
  background-image: -webkit-gradient(linear, right in oklab, color-stop(0, oklch(72.3% 0.219 149.579)), to(oklch(71.5% 0.143 215.221)));
  background-image: linear-gradient(to right in oklab, oklch(72.3% 0.219 149.579) 0, oklch(71.5% 0.143 215.221) 100%);
  -webkit-filter: blur(40px);
  filter: blur(40px);
  -webkit-animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  opacity: 0.3;
}
@media (max-width: 650px) {
  .first-banner .h-title {
    font-size: 50px;
  }
}
.first-banner .ai-tag {
  border: 1px solid #3F4148;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  padding: 25px;
  width: -webkit-fit-content;
  width: -moz-fit-content;
  width: fit-content;
  margin: 0 auto 60px;
  border-radius: 12px;
  opacity: 0;
  -webkit-animation: moveY 0.7s ease-in-out both;
  animation: moveY 0.7s ease-in-out both;
  -webkit-animation-delay: 0.6s;
  animation-delay: 0.6s;
}
.first-banner .ai-tag .user-info {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  position: relative;
  margin-right: 40px;
}
.first-banner .ai-tag .user-info .live {
  position: absolute;
  right: -30px;
  top: -10px;
  padding: 1px 10px;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  color: #fff;
  background-color: var(--primary-color);
  border-radius: 12px;
  font-size: 13px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  z-index: 10;
}
.first-banner .ai-tag .user-info .live::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #fff;
  margin-right: 5px;
  -webkit-animation: opa2 2.5s linear infinite both;
  animation: opa2 2.5s linear infinite both;
}
@-webkit-keyframes opa2 {
  0% {
    opacity: 1;
  }
  70% {
    opacity: 0.5;
  }
  100% {
    opacity: 1;
  }
}
@keyframes opa2 {
  0% {
    opacity: 1;
  }
  70% {
    opacity: 0.5;
  }
  100% {
    opacity: 1;
  }
}
.first-banner .ai-tag .user-info .img-b {
  width: 56px;
  height: 56px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  border-radius: 50%;
  overflow: hidden;
  margin-left: -12px;
  -webkit-transform-origin: center;
  transform-origin: center;
  -webkit-transition: all 1s ease-in-out;
  transition: all 1s ease-in-out;
}
.first-banner .ai-tag .user-info .img-b:first-child {
  margin-left: 0;
}
.first-banner .ai-tag .user-info .img-b img {
  width: 100%;
}
.first-banner .ai-tag .user-info .img-active {
  -webkit-transform: scale(1.15);
  transform: scale(1.15);
  border-color: var(--primary-color, #00C863);
  z-index: 5;
}
.first-banner .ai-tag .right-desc {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  -webkit-box-align: start;
  -ms-flex-align: start;
  align-items: flex-start;
  color: var(--main-color-2);
}
.first-banner .ai-tag .right-desc .fl-desc {
  background-color: #072F28;
  border-radius: 14px;
  padding: 3px 9px;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  border: 1px solid #055B3B;
  position: relative;
  top: 3.5px;
  left: 5px;
}
.first-banner .ai-tag .right-desc .fl-desc .my-f1 {
  margin-right: 2px;
  opacity: 0.4;
  -webkit-animation: pulse3 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  animation: pulse3 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  color: var(--primary-color);
}
@-webkit-keyframes pulse6 {
  50% {
    opacity: 0.6;
  }
}
@keyframes pulse6 {
  50% {
    opacity: 0.6;
  }
}
.first-banner .ai-tag .right-desc .fl-desc .num {
  font-weight: 550;
  color: var(--primary-color);
}
.first-banner .ai-tag .desc-text {
  font-weight: 550;
  font-size: 16px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: end;
  -ms-flex-align: end;
  align-items: flex-end;
  margin-top: 6px;
}
.first-banner .ai-tag .desc-text .number {
  font-size: 25px;
  margin: 0 4px;
  position: relative;
  top: 3px;
}
.first-banner .ai-tag .desc-text .line-box {
  margin-left: 8px;
  position: relative;
  top: -2px;
}
.first-banner .ai-tag .desc-text .line-box .line-1 {
  width: 51px;
  height: 4px;
  background: -webkit-gradient(linear, left top, right top, from(#00DF71), to(#00D3F1));
  background: linear-gradient(to right, #00DF71, #00D3F1);
  border-radius: 5px;
  -webkit-animation: pulse3 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  animation: pulse3 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  opacity: 0.4;
}
@-webkit-keyframes pulse3 {
  50% {
    opacity: 0.6;
  }
}
@keyframes pulse3 {
  50% {
    opacity: 0.6;
  }
}
.first-banner .ai-tag .desc-text .line-box .line-2 {
  width: 34px;
  height: 4px;
  background: -webkit-gradient(linear, left top, right top, from(#00D3F1), to(#00DF71));
  background: linear-gradient(to right, #00D3F1, #00DF71);
  border-radius: 5px;
  margin-top: 6px;
  -webkit-animation: pulse4 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  animation: pulse4 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  opacity: 0.4;
}
@-webkit-keyframes pulse4 {
  50% {
    opacity: 0.8;
  }
}
@keyframes pulse4 {
  50% {
    opacity: 0.8;
  }
}
.first-banner .ai-tag .btm-text {
  font-size: 13px;
  margin-top: 10px;
}
.first-banner .ai-tag .btm-text .b-t-1 {
  margin-right: 16px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
.first-banner .ai-tag .btm-text .b-t-1::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  margin-right: 5px;
  background-color: #00DF71;
  -webkit-animation: pulse5 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  animation: pulse5 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  opacity: 0.9;
}
@-webkit-keyframes pulse5 {
  50% {
    opacity: 0.5;
  }
}
@keyframes pulse5 {
  50% {
    opacity: 0.5;
  }
}
.first-banner .ai-tag .btm-text .b-t-2 {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
.first-banner .ai-tag .btm-text .b-t-2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  margin-right: 5px;
  background-color: #00D3F1;
  -webkit-animation: pulse5 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  animation: pulse5 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  opacity: 0.9;
}
@-webkit-keyframes pulse5 {
  50% {
    opacity: 0.5;
  }
}
@keyframes pulse5 {
  50% {
    opacity: 0.5;
  }
}
.first-banner .ai-tag .el-rate__icon {
  margin-right: 2px;
  font-size: 26px;
  -webkit-animation: scale2 1.5s linear infinite alternate;
  animation: scale2 1.5s linear infinite alternate;
}
@-webkit-keyframes scale2 {
  from {
    -webkit-transform: scale(1);
    transform: scale(1);
  }
  to {
    -webkit-transform: scale(1.2);
    transform: scale(1.2);
  }
}
@keyframes scale2 {
  from {
    -webkit-transform: scale(1);
    transform: scale(1);
  }
  to {
    -webkit-transform: scale(1.2);
    transform: scale(1.2);
  }
}
.first-banner .wrapper-d {
  -webkit-transform: translateY(30px);
  transform: translateY(30px);
  opacity: 0;
  -webkit-animation: moveY 0.7s ease-in-out both;
  animation: moveY 0.7s ease-in-out both;
  -webkit-animation-delay: 0.3s;
  animation-delay: 0.3s;
}
.first-banner .h-desc {
  color: #99A1AF;
  margin-bottom: 40px;
  font-size: 20px;
}
@media (max-width: 650px) {
  .first-banner .h-desc {
    font-size: 17px;
    margin: 0 12px 40px;
  }
}
.first-banner .go-start-main {
  width: 240px;
  height: 50px;
  border-radius: 24px;
  font-size: 18px;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  background: -webkit-gradient(linear, left top, right top, from(#00C863), to(#00BBCE));
  background: linear-gradient(to right, #00C863, #00BBCE);
  color: var(--main-color-4);
  -webkit-animation: glowPulse 2.5s ease-in-out infinite;
  animation: glowPulse 2.5s ease-in-out infinite;
  -webkit-transition: all 0.3s ease-in-out;
  transition: all 0.3s ease-in-out;
  /* 💫 呼吸发光效果 */
}
.first-banner .go-start-main:hover {
  -webkit-transform: scale(1.08);
  transform: scale(1.08);
}
@-webkit-keyframes glowPulse {
  0%, 100% {
    -webkit-box-shadow: 0 0 12px rgba(0, 200, 99, 0.25), 0 0 25px rgba(0, 187, 206, 0.15);
    box-shadow: 0 0 12px rgba(0, 200, 99, 0.25), 0 0 25px rgba(0, 187, 206, 0.15);
  }
  50% {
    -webkit-box-shadow: 0 0 22px rgba(0, 200, 99, 0.55), 0 0 45px rgba(0, 187, 206, 0.35);
    box-shadow: 0 0 22px rgba(0, 200, 99, 0.55), 0 0 45px rgba(0, 187, 206, 0.35);
  }
}
@keyframes glowPulse {
  0%, 100% {
    -webkit-box-shadow: 0 0 12px rgba(0, 200, 99, 0.25), 0 0 25px rgba(0, 187, 206, 0.15);
    box-shadow: 0 0 12px rgba(0, 200, 99, 0.25), 0 0 25px rgba(0, 187, 206, 0.15);
  }
  50% {
    -webkit-box-shadow: 0 0 22px rgba(0, 200, 99, 0.55), 0 0 45px rgba(0, 187, 206, 0.35);
    box-shadow: 0 0 22px rgba(0, 200, 99, 0.55), 0 0 45px rgba(0, 187, 206, 0.35);
  }
}
.first-banner .cus-swiper {
  width: 100%;
  overflow: hidden;
}
.first-banner .cus-swiper .swiper-slide {
  width: 100%;
}
.first-banner .cus-swiper .swiper-slide .inner {
  width: 100%;
}
.first-banner .cus-swiper .swiper-slide .inner img {
  width: 100%;
}
.first-banner .cus-swiper .swiper-slide .inner .des {
  width: 90%;
  height: 35px;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  background: rgba(0, 0, 0, 0.35);
  /* 半透明层 */
  position: absolute;
  bottom: 25px;
  left: 50%;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  border-radius: 10px;
}
.first-banner .cus-swiper .my-bullet {
  display: inline-block;
  width: 7px;
  height: 7px;
  background-color: #565654;
  border-radius: 50%;
  margin-right: 8px;
  cursor: pointer;
}
.first-banner .cus-swiper .my-bullet:last-child {
  margin-right: 0;
}
.first-banner .cus-swiper .my-bullet-active {
  background: -webkit-gradient(linear, left top, right top, from(#00C863), to(#00BBCE));
  background: linear-gradient(to right, #00C863, #00BBCE);
  width: 25px;
  border-radius: 5px;
}
.first-banner .cus-swiper .swiper-pagination {
  bottom: 3px;
}
.first-banner .sw-box {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  opacity: 0;
  -webkit-animation: moveY 0.7s ease-in-out both;
  animation: moveY 0.7s ease-in-out both;
  -webkit-animation-delay: 0.9s;
  animation-delay: 0.9s;
  margin-top: 60px;
}
.first-banner .sw-box .flex-item {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
}
.first-banner .sw-box .flex-item .tag {
  padding: 5px 12px;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  background-color: #3F4552;
  color: #C9CCD4;
  position: absolute;
  left: 15px;
  top: 15px;
  border-radius: 16px;
  z-index: 10;
}
.first-banner .sw-box .flex-item .tag-2 {
  color: #fff;
  background: -webkit-gradient(linear, left top, right top, from(#00C863), to(#00BBCE));
  background: linear-gradient(to right, #00C863, #00BBCE);
}
.first-banner .sw-box .flex-item .o-img {
  width: 100%;
}

.c-main-item {
  margin-top: 100px;
}
.c-main-item .t-top {
  text-align: center;
}
.c-main-item h2 {
  color: var(--main-color-2);
  font-size: 51px;
  margin-bottom: 12px;
}
@media (max-width: 650px) {
  .c-main-item h2 {
    font-size: 30px;
  }
}
.c-main-item .t-desc {
  font-size: 20px;
  color: #a1a1a1;
  margin-bottom: 32px;
}
@media (max-width: 1200px) {
  .c-main-item .t-desc {
    font-size: 18px;
  }
}
.c-main-item .c-content-box {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 2fr));
  gap: 20px;
}
.c-main-item .c-content-box .u-item {
  padding: 17px;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  border-radius: 10px;
  border: 1px solid #262626;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
}
.c-main-item .c-content-box .u-item .c-top {
  color: #fff;
}
.c-main-item .c-content-box .u-item .c-top .c-avatar {
  width: 48px;
  border-radius: 50%;
}
.c-main-item .c-content-box .u-item .c-top .u-desc-info {
  margin-left: 12px;
}
.c-main-item .c-content-box .u-item .c-top .u-desc-info .u-name {
  font-size: 16px;
}
.c-main-item .c-content-box .u-item .c-top .u-desc-info .origin {
  color: #666;
  font-size: 14px;
}
.c-main-item .c-content-box .u-item .comment {
  color: #fff;
  margin: 10px 0;
}
.c-main-item .c-content-box .u-item .cover {
  width: 335px;
  height: 272px;
  overflow: hidden;
  border-radius: 20px;
  margin-top: 16px;
}
.c-main-item .c-content-box .u-item .cover img {
  width: 100%;
  height: 100%;
}
.c-main-item .use-desc-box {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 50px;
  color: #fff;
  margin-bottom: 100px;
  height: 330px;
}
.c-main-item .use-desc-box .u-desc-item {
  border-radius: 10px;
  border: 1px solid #262626;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  text-align: center;
  padding: 40px 17px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-transition: all 0.35s ease;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}
.c-main-item .use-desc-box .u-desc-item::after {
  content: "";
  width: 100%;
  height: 4px;
  background-color: #FAD340;
  position: absolute;
  bottom: 0;
  left: 0;
  opacity: 0;
  -webkit-transition: all 0.35s ease;
  transition: all 0.35s ease;
}
.c-main-item .use-desc-box .u-desc-item:hover {
  -webkit-transform: scale(1.1);
  transform: scale(1.1);
  background-color: #312E1E;
  border-color: #5D5228;
}
.c-main-item .use-desc-box .u-desc-item:hover::after {
  opacity: 1;
}
.c-main-item .use-desc-box .u-desc-item:hover .step-title {
  color: #FAD340;
}
.c-main-item .use-desc-box .u-desc-item:hover .step {
  border-color: #816F2B;
}
.c-main-item .use-desc-box .u-desc-item:hover .step .number {
  -webkit-transform: scale(0.9) rotate(5deg);
  transform: scale(0.9) rotate(5deg);
  background-color: #4E4319;
}
.c-main-item .use-desc-box .u-desc-item:hover .step .number .num {
  color: #fff;
  -webkit-transform: rotate(-5deg);
  transform: rotate(-5deg);
}
.c-main-item .use-desc-box .u-desc-item .step {
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  border: 2px solid #5D5331;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  padding: 7px 8px;
  width: -webkit-fit-content;
  width: -moz-fit-content;
  width: fit-content;
  border-radius: 10px;
  -webkit-transition: all 0.35s ease;
  transition: all 0.35s ease;
}
.c-main-item .use-desc-box .u-desc-item .step .number {
  width: 85px;
  height: 85px;
  background-color: #3A3214;
  border-radius: 10px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-transition: all 0.35s ease;
  transition: all 0.35s ease;
}
.c-main-item .use-desc-box .u-desc-item .step .number .num {
  font-size: 31px;
  color: #F0CC3F;
  font-weight: bold;
  line-height: 30px;
  -webkit-transition: all 0.35s ease;
  transition: all 0.35s ease;
}
.c-main-item .use-desc-box .u-desc-item .step-title {
  font-size: 21px;
  margin-top: 20px;
}
.c-main-item .use-desc-box .u-desc-item .step-desc {
  color: #9097A2;
  margin-top: 16px;
}
.c-main-item .use-desc-box-1 {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 50px;
  color: #fff;
  margin-bottom: 100px;
}
.c-main-item .use-desc-box-1 .u-desc-item {
  border-radius: 10px;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  text-align: center;
  padding: 40px 15px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-transition: all 0.35s ease;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
  background-color: #090C14;
}
.c-main-item .use-desc-box-1 .u-desc-item .d-img {
  width: 40px;
}
.c-main-item .use-desc-box-1 .u-desc-item:hover {
  background-color: #10151C;
}
.c-main-item .use-desc-box-1 .u-desc-item .step-title {
  font-size: 21px;
  margin-top: 20px;
  color: #fff;
}
.c-main-item .use-desc-box-1 .u-desc-item .step-desc {
  color: #9097A2;
  font-size: 16px;
  margin-top: 16px;
}
.c-main-item .el-collapse {
  border-top: 0;
}
.c-main-item .el-collapse-item {
  border-bottom: 1px solid #1F2937;
}
.c-main-item .el-collapse-item .el-collapse-item__header {
  background: transparent;
  color: #F2F2F2 !important;
  font-size: 20px;
  border-radius: 0;
  border: 0;
}
@media (max-width: 1200px) {
  .c-main-item .el-collapse-item .el-collapse-item__header {
    font-size: 17px;
  }
}
.c-main-item .el-collapse-item__wrap {
  background: transparent;
  border-radius: 0;
  border-bottom: 0;
}
.c-main-item .el-collapse-item__wrap .el-collapse-item__content {
  font-size: 16px;
  color: #D1D5DB;
}

.container-2 {
  max-width: 900px;
  width: 80%;
}