.anbo_about_cert {
  position: relative;
  overflow: hidden;
  padding: 100px 0;
}

.anbo_about_cert_bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.anbo_about_cert_bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.anbo_about_cert .container {
  position: relative;
  z-index: 2;
}

.anbo_about_cert_head {
  text-align: center;
}

.anbo_about_cert_title {
  font-size: 60px;
  font-weight: 700;
  color: #0c0700;
  line-height: 1.2;
}

.anbo_about_cert_desc {
  margin-top: 20px;
  color: #222;
  font-size: 20px;
  font-weight: 400;
  line-height: 1.5;
}

.anbo_about_cert_carousel {
  margin-top: 40px;
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 63px;
}

.anbo_about_cert_arrow {
  flex-shrink: 0;
  width: 52px;
  aspect-ratio: 1 / 1;

  display: flex;
  align-items: center;
  justify-content: center;

  border-radius: 50%;
  background: var(--color-primary);
  transition: background-color 0.3s ease;
  cursor: pointer;
}

.anbo_about_cert_arrow:hover {
  background-color: #B0935B;
}

/* 头部与容器响应式 */
@media screen and (max-width: 1499px) {
  .anbo_about_cert {
    padding: 80px 0;
  }

  .anbo_about_cert_title {
    font-size: 52px;
  }

  .anbo_about_cert_desc {
    margin-top: 18px;
    font-size: 18px;
  }

  .anbo_about_cert_carousel {
    margin-top: 32px;
    gap: 40px;
  }

  .anbo_about_cert_arrow {
    width: 48px;
  }
}

@media screen and (max-width: 1279px) {
  .anbo_about_cert {
    padding: 72px 0;
  }

  .anbo_about_cert_title {
    font-size: 48px;
  }

  .anbo_about_cert_carousel {
    gap: 32px;
  }

  .anbo_about_cert_arrow {
    width: 44px;
  }
}

@media screen and (max-width: 1199px) {
  .anbo_about_cert {
    padding: 64px 0;
  }

  .anbo_about_cert_title {
    font-size: 44px;
  }

  .anbo_about_cert_desc {
    margin-top: 16px;
    font-size: 16px;
  }

  .anbo_about_cert_carousel {
    margin-top: 28px;
    gap: 24px;
  }

  .anbo_about_cert_arrow {
    width: 40px;
  }
}

@media screen and (max-width: 991px) {
  .anbo_about_cert {
    padding: 56px 0;
  }

  .anbo_about_cert_title {
    font-size: 40px;
  }

  .anbo_about_cert_carousel {
    margin-top: 24px;
    gap: 18px;
  }

  .anbo_about_cert_arrow {
    width: 36px;
  }
}

@media screen and (max-width: 767px) {
  .anbo_about_cert {
    padding: 48px 0;
  }

  .anbo_about_cert_title {
    font-size: 34px;
  }

  .anbo_about_cert_desc {
    margin-top: 14px;
    font-size: 15px;
  }

  .anbo_about_cert_carousel {
    margin-top: 20px;
    gap: 12px;
  }

  .anbo_about_cert_arrow {
    width: 32px;
  }
}

@media screen and (max-width: 575px) {
  .anbo_about_cert {
    padding: 40px 0;
  }

  .anbo_about_cert_title {
    font-size: 28px;
  }

  .anbo_about_cert_desc {
    margin-top: 12px;
    font-size: 12px;
  }

  .anbo_about_cert_carousel {
    margin-top: 16px;
    gap: 8px;
  }
}

/* 轮播部分 */
.anbo_about_cert_stage {
  position: relative;
  width: 100%;
  aspect-ratio: 1210 / 444;
  margin: 0 auto;
  perspective: 1800px;
  transform-style: preserve-3d;
  visibility: hidden;
  flex: 1;
}

.anbo_about_cert_stage.is-ready {
  visibility: visible;
}

.anbo_about_cert_item {
  position: absolute;
  left: 50%;
  top: 50%;
  display: block;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: transparent;
  box-shadow: none;
  cursor: pointer;
  opacity: 0;
  transform: translate3d(-50%, -50%, 0) rotateY(0deg);
  transform-origin: center center;
  transform-style: preserve-3d;
  transition: left 0.45s ease, top 0.45s ease, opacity 0.25s ease, transform 0.45s ease, filter 0.18s ease;
  will-change: left, top, opacity, transform, filter;
}

.anbo_about_cert_item img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: inherit;
  backface-visibility: hidden;
  transform: scale(1);
  transform-origin: center center;
  transition: transform 0.35s ease;
  will-change: transform;
}

.anbo_about_cert_item:focus-visible {
  outline: 2px solid #B77C44;
  outline-offset: 6px;
}

.anbo_about_cert_item.is-far-left {
  left: 0%;
  top: 27.4%;
  z-index: 1;
  width: 15.1%;
  opacity: 1;
  transform: rotateY(64deg);
}

.anbo_about_cert_item.is-left {
  left: 9.9%;
  top: 22.1%;
  z-index: 2;
  width: 17.7%;
  opacity: 1;
  transform: rotateY(48deg);
}

.anbo_about_cert_item.is-near-left {
  left: 19.7%;
  top: 11.2%;
  z-index: 3;
  width: 21%;
  opacity: 1;
  transform: rotateY(32deg);
}

.anbo_about_cert_item.is-center {
  left: 36.2%;
  top: 0%;
  z-index: 4;
  width: 27.7%;
  opacity: 1;
  transform: rotateY(0deg);
}

.anbo_about_cert_item.is-near-right {
  left: 58.7%;
  top: 11.2%;
  z-index: 3;
  width: 21%;
  opacity: 1;
  transform: rotateY(-32deg);
}

.anbo_about_cert_item.is-right {
  left: 73.3%;
  top: 18.7%;
  z-index: 2;
  width: 16.6%;
  opacity: 1;
  transform: rotateY(-48deg);
}

.anbo_about_cert_item.is-far-right {
  left: 84.9%;
  top: 24%;
  z-index: 1;
  width: 15.1%;
  opacity: 1;
  transform: rotateY(-64deg);
}

.anbo_about_cert_item.is-hidden {
  pointer-events: none;
}

.anbo_about_cert_item.is-hidden.is-before {
  left: 0%;
  top: 27.4%;
  width: 15.1%;
  transform: rotateY(64deg);
}

.anbo_about_cert_item.is-hidden.is-after {
  left: 84.9%;
  top: 24%;
  width: 15.1%;
  transform: rotateY(-64deg);
}

@media (hover: hover) and (pointer: fine) {
  .anbo_about_cert_item:not(.is-hidden):hover {
    filter: brightness(1.03);
  }

  .anbo_about_cert_item:not(.is-hidden):hover img {
    transform: scale(1.03);
  }
}

@media (max-width: 1200px) {
  .anbo_about_cert_stage {
    width: min(100%, 760px);
  }
}

@media (max-width: 768px) {

  .anbo_about_cert_stage {
    width: min(100%, 360px);
    aspect-ratio: 4 / 5;
    overflow: hidden;
  }

  .anbo_about_cert_item,
  .anbo_about_cert_item.is-far-left,
  .anbo_about_cert_item.is-left,
  .anbo_about_cert_item.is-near-left,
  .anbo_about_cert_item.is-center,
  .anbo_about_cert_item.is-near-right,
  .anbo_about_cert_item.is-right,
  .anbo_about_cert_item.is-far-right,
  .anbo_about_cert_item.is-hidden,
  .anbo_about_cert_item.is-hidden.is-before,
  .anbo_about_cert_item.is-hidden.is-after {
    left: 50%;
    top: 50%;
    width: 78%;
    opacity: 0;
    pointer-events: none;
    transform: translate3d(-50%, -50%, 0) rotateY(0deg);
  }

  .anbo_about_cert_item.is-center {
    opacity: 1;
    pointer-events: auto;
    transform: translate3d(-50%, -50%, 0) rotateY(0deg);
  }
}

/* logos：独立于证书轮播布局 */
.anbo_about_cert-logos-box {
  position: relative;
  margin-top: 53px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.anbo_about_cert-logo {
  flex-shrink: 0;
  transition: transform 0.2s ease-out;
}

.anbo_about_cert-logo img {
  display: block;
  width: auto;
  height: 45px;
  object-fit: contain;
  transform-origin: center bottom;
  transition: transform 0.2s ease-out;
}

.anbo_about_cert-logos-box.is-scrollable {
  justify-content: flex-start;
  overflow: hidden;
}

.anbo_about_cert-logos-track {
  display: flex;
  flex-shrink: 0;
  width: max-content;
  animation: anbo_about_cert_logos_scroll 30s linear infinite;
}

.anbo_about_cert-logos-group {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

@media (hover: hover) {
  .anbo_about_cert-logos-box.is-scrollable:hover .anbo_about_cert-logos-track {
    animation-play-state: paused;
  }
}

@keyframes anbo_about_cert_logos_scroll {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

.anbo_about_cert-logos-box.is-scrollable .anbo_about_cert-logo,
.anbo_about_cert-logos-box.is-scrollable .anbo_about_cert-logo img {
  transition: none;
}

@media screen and (max-width: 1279px) {
  .anbo_about_cert-logos-box {
    margin-top: 32px;
  }

  .anbo_about_cert-logo img {
    height: 40px;
  }
}

@media screen and (max-width: 1199px) {
  .anbo_about_cert-logos-box {
    gap: 10px;
    margin-top: 24px;
  }

  .anbo_about_cert-logo img {
    height: 30px;
  }
}