.about-banner {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.about-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

.about-banner__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.about-banner__copy {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
}

.about-banner__copy h1 {
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
  font-weight: 600;
  line-height: var(--lh-133);
  text-shadow: 4px 4px 8px rgba(0, 0, 0, 0.25);
}

.about-banner__eyebrow {
  font-size: var(--fs-36);
  font-weight: 400;
}

.about-banner__title {
  font-size: var(--fs-52);
  font-weight: 600;
}

.about-banner__crumb {
  position: absolute;
  left: var(--pad-x);
  bottom: 0.48rem;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.12rem;
  padding: 0.12rem 0.28rem;
  border-radius: var(--r-pill);
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(10px);
  font-size: var(--fs-16);
  line-height: var(--lh-15);
  color: #fff;
  transition: background-color var(--dur-1);
}

.about-banner__crumb:hover {
  background: rgba(0, 0, 0, 0.22);
}

.about-banner__crumb a {
  color: var(--w70);
  transition: color var(--dur-2);
}

.about-banner__crumb a:hover {
  color: var(--vi);
}

.about-banner__arrow {
  width: 1em;
  height: 1em;
  color: var(--w40);
  transition: transform var(--dur-1);
}

.about-banner__crumb a:hover + .about-banner__arrow {
  transform: translateX(2px);
}

.about-sec {
  padding: var(--sec-top) var(--pad-x) 0;
}

.about-sec h2 {
  font-size: var(--fs-50);
  font-weight: 600;
  line-height: var(--lh-133);
}

.about-sec--center h2,
.about-lead {
  text-align: center;
}

.about-body {
  margin-top: 0.48rem;
  font-size: var(--fs-20);
  font-weight: 400;
  line-height: var(--lh-2);
  color: var(--t1);
}

.about-body a {
  color: var(--t1);
  text-decoration: underline;
  text-underline-offset: 0.04rem;
  transition: color var(--dur-3);
}

.about-body a:hover {
  color: var(--vi);
}

.about-intro__text .about-body + .about-body {
  margin-top: 0.2rem;
}

.about-lead {
  margin-top: 0.48rem;
  font-size: var(--fs-18);
  font-weight: 400;
  line-height: var(--lh-18);
  color: var(--t2);
}

.about-intro__row,
.about-split {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.about-intro__row {
  align-items: stretch;
  margin-top: 0.48rem;
}

.about-intro__video,
.about-intro__text {
  flex: 0 0 calc((100% - 0.3rem) * 0.5);
  max-width: calc((100% - 0.3rem) * 0.5);
  min-width: 0;
}

.about-intro__text .about-body:first-child {
  margin-top: 0;
}

.about-video {
  height: 100%;
  border-radius: var(--r-card);
  overflow: hidden;
}

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

.about-split__pic,
.about-split__text {
  min-width: 0;
}

.about-split--img-text .about-split__pic {
  flex: 0 0 calc((100% - 0.3rem) * 0.583333);
  max-width: calc((100% - 0.3rem) * 0.583333);
}

.about-split--img-text .about-split__text {
  flex: 0 0 calc((100% - 0.3rem) * 0.416667);
  max-width: calc((100% - 0.3rem) * 0.416667);
}

.about-split--text-img .about-split__text {
  flex: 0 0 calc((100% - 0.3rem) * 0.416667);
  max-width: calc((100% - 0.3rem) * 0.416667);
}

.about-split--text-img .about-split__pic {
  flex: 0 0 calc((100% - 0.3rem) * 0.583333);
  max-width: calc((100% - 0.3rem) * 0.583333);
}

.about-split__pic {
  height: 4.2rem;
  border-radius: var(--r-card);
  overflow: hidden;
}

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

.about-stat__icon {
  display: block;
  width: 0.48rem;
  height: 0.48rem;
  margin-bottom: 0.2rem;
  color: var(--t1);
}

.about-stat__icon .icon {
  width: 100%;
  height: 100%;
}

.about-bases {
  margin-top: 1rem;
  overflow: hidden;
}

.about-bases__pic {
  position: relative;
  height: 3.6rem;
  border-radius: var(--r-card);
  overflow: hidden;
}

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

.about-bases__pic::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, 0.62) 100%);
  pointer-events: none;
}

.about-bases__name {
  position: absolute;
  left: 0.24rem;
  bottom: 0.2rem;
  z-index: 1;
  color: #fff;
  font-size: var(--fs-24);
  font-weight: 600;
  line-height: var(--lh-15);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.45);
  pointer-events: none;
}

.about-bases__pic .ph,
.about-video .ph,
.about-split__pic .ph,
.about-make__pic .ph,
.about-certs__pic .ph {
  height: 100%;
}

.about-bases__dots {
  position: static;
  display: none;
  justify-content: center;
  gap: 0.08rem;
  margin-top: 0.2rem;
}

.about-bases__dots .swiper-pagination-bullet {
  width: 0.4rem;
  height: 0.06rem;
  margin: 0;
  border-radius: var(--r-btn);
  background: var(--ln1);
  opacity: 1;
}

.about-bases__dots .swiper-pagination-bullet-active {
  background: var(--vi);
}

.about-make__grid,
.about-certs__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: var(--gutter);
  row-gap: 0.4rem;
  margin-top: 1rem;
}

.about-make__pic,
.about-certs__pic {
  border-radius: var(--r-card);
  overflow: hidden;
}

.about-make__pic {
  height: 3.6rem;
}

.about-certs__pic {
  aspect-ratio: 556 / 788;
  background: #fff;
}

.about-make__pic img,
.about-certs__pic img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 1025px) {
  .about-certs__grid {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
  }
}

.about-patents__grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.20rem;
  margin-top: 0.8rem;
}

.about-patents__pic {
  aspect-ratio: 556 / 788;
  border-radius: var(--r-card);
  overflow: hidden;
  background: #fff;
}

.about-patents__pic img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-3);
}

.about-patents__pic:hover img {
  transform: scale(1.05);
}

.about-honors__grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.20rem;
  margin-top: 0.4rem;
}

.about-honors__pic {
  aspect-ratio: 3 / 2;
  border-radius: var(--r-card);
  overflow: hidden;
  background: #fff;
}

.about-honors__pic img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-3);
}

.about-honors__pic:hover img {
  transform: scale(1.05);
}

.about-mosaic {
  display: grid;
  grid-template-columns: 3fr 6fr 3fr;
  gap: 0.3rem;
  min-height: 5.8rem;
  margin-top: 1rem;
}

.about-mosaic__side,
.about-mosaic__mid {
  display: grid;
  gap: 0.2rem;
  min-width: 0;
  min-height: 0;
}

.about-mosaic__side {
  grid-template-rows: 1fr 1fr;
}

.about-mosaic__mid {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
}

.about-mosaic__cell {
  position: relative;
  min-height: 1.4rem;
  border-radius: var(--r-card);
  overflow: hidden;
}

.about-mosaic__cell--wide {
  grid-column: 1 / -1;
}

.about-mosaic__cell .ph,
.about-mosaic__cell img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-video img,
.about-bases__pic img,
.about-bases__pic .ph,
.about-split__pic img,
.about-split__pic .ph,
.about-make__pic img,
.about-make__pic .ph,
.about-mosaic__cell img,
.about-mosaic__cell .ph,
.about-certs__pic img,
.about-certs__pic .ph {
  transition: transform var(--dur-3);
}

.about-video:hover img,
.about-bases__pic:hover img,
.about-bases__pic:hover .ph,
.about-split__pic:hover img,
.about-split__pic:hover .ph,
.about-make__pic:hover img,
.about-make__pic:hover .ph,
.about-mosaic__cell:hover img,
.about-mosaic__cell:hover .ph,
.about-certs__pic:hover img,
.about-certs__pic:hover .ph {
  transform: scale(1.05);
}

.about-form {
  padding: var(--sec-top) var(--pad-x) var(--sec-bottom);
  background: var(--bg2);
}

@media (max-width: 1024px) and (min-width: 769px) {
  .about-honors__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }
}

@media (max-width: 768px) {
  .about-banner__crumb {
    left: 16px;
    bottom: 68px;
  }

  .about-intro__row,
  .about-split {
    flex-direction: column;
  }

  .about-intro__video,
  .about-intro__text,
  .about-split__pic,
  .about-split__text,
  .about-split--img-text .about-split__pic,
  .about-split--img-text .about-split__text,
  .about-split--text-img .about-split__pic,
  .about-split--text-img .about-split__text {
    flex: none;
    width: 100%;
    max-width: none;
  }

  .about-video,
  .about-split__pic {
    height: 220px;
  }

  .about-bases__dots {
    display: flex;
  }

  .about-bases__name {
    font-size: 18px;
  }

  .about-make__grid {
    grid-template-columns: 1fr;
  }

  .about-certs__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-top: 24px;
  }

  .about-patents__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-top: 24px;
  }

  .about-honors__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-top: 16px;
  }

  .about-mosaic {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .about-mosaic__side,
  .about-mosaic__mid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: none;
  }

  .about-mosaic__cell {
    height: 160px;
    min-height: 0;
  }

  .about-mosaic__cell--wide {
    height: 190px;
  }
}

/* 360° 实景看厂 */
.about-pano__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gutter);
  margin-top: 1rem;
}

.about-pano__item {
  min-width: 0;
}

.about-pano__card {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  padding: 0;
  border: 0;
  border-radius: var(--r-card);
  overflow: hidden;
  background: #111;
  color: #fff;
  text-align: left;
  cursor: pointer;
  transition: transform var(--dur-3) var(--ease), box-shadow var(--dur-3) var(--ease);
}

.about-pano__card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-3) var(--ease);
}

.about-pano__card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, 0.62) 100%);
  pointer-events: none;
}

.about-pano__card:hover {
  transform: translateY(-0.04rem);
  box-shadow: var(--sh-card);
}

.about-pano__card:hover img {
  transform: scale(1.05);
}

.about-pano__card:focus-visible {
  outline: 2px solid var(--vi);
  outline-offset: 3px;
}

.about-pano__badge {
  position: absolute;
  top: 0.16rem;
  left: 0.16rem;
  z-index: 2;
  padding: 0.04rem 0.12rem;
  border-radius: var(--r-pill);
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(10px);
  font-size: var(--fs-14);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.about-pano__meta {
  position: absolute;
  left: 0.24rem;
  right: 0.24rem;
  bottom: 0.2rem;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.12rem;
  pointer-events: none;
}

.about-pano__name {
  font-size: var(--fs-24);
  font-weight: 600;
  line-height: var(--lh-15);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.45);
}

.about-pano__view {
  display: flex;
  align-items: center;
  gap: 0.06rem;
  flex: none;
  font-size: var(--fs-16);
  line-height: var(--lh-15);
  color: var(--w70);
  white-space: nowrap;
  transition: color var(--dur-2);
}

.about-pano__view .icon {
  width: 0.16rem;
  height: 0.16rem;
  transition: transform var(--dur-2);
}

.about-pano__card:hover .about-pano__view {
  color: #fff;
}

.about-pano__card:hover .about-pano__view .icon {
  transform: translateX(0.04rem);
}

/* 全景弹层 */
.pano-modal {
  position: fixed;
  inset: 0;
  z-index: 1300;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--dur-2) var(--ease), visibility var(--dur-2) var(--ease);
}

.pano-modal.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.pano-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(10px);
}

.pano-modal__panel {
  position: relative;
  width: 90vw;
  height: 88vh;
  border-radius: var(--r-card);
  overflow: hidden;
  background: #0b0b0b;
  box-shadow: 0 0.3rem 1.2rem rgba(0, 0, 0, 0.45);
  transform: scale(0.97);
  transition: transform var(--dur-3) var(--ease);
}

.pano-modal.is-open .pano-modal__panel {
  transform: scale(1);
}

.pano-modal__viewer {
  position: absolute;
  inset: 0;
}

.pano-modal .pnlm-container {
  background-color: #0b0b0b;
}

.pano-modal .pnlm-load-box {
  display: none;
}

.pano-modal__title {
  position: absolute;
  top: 0.2rem;
  left: 0.24rem;
  z-index: 3;
  margin: 0;
  color: #fff;
  font-size: var(--fs-20);
  font-weight: 600;
  line-height: var(--lh-15);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
  pointer-events: none;
}

.pano-modal__close {
  position: absolute;
  top: 0.18rem;
  right: 0.18rem;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 0.5rem;
  height: 0.5rem;
  border: 1px solid var(--w30);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  color: #fff;
  cursor: pointer;
  transition: background-color var(--dur-2), border-color var(--dur-2), transform var(--dur-2);
}

.pano-modal__close:hover {
  background: var(--vi);
  border-color: var(--vi);
  transform: rotate(90deg);
}

.pano-modal__close .icon {
  width: 0.22rem;
  height: 0.22rem;
}

.pano-modal__hint {
  position: absolute;
  left: 50%;
  bottom: 0.18rem;
  z-index: 3;
  transform: translateX(-50%);
  margin: 0;
  padding: 0.06rem 0.16rem;
  border-radius: var(--r-pill);
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  color: var(--w70);
  font-size: var(--fs-14);
  line-height: 1.4;
  white-space: nowrap;
  pointer-events: none;
}

.pano-modal__loading {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.14rem;
  background: #0b0b0b;
  color: var(--w70);
  font-size: var(--fs-16);
  transition: opacity var(--dur-2), visibility var(--dur-2);
}

.pano-modal__loading.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.pano-spinner {
  width: 0.34rem;
  height: 0.34rem;
  border: 2px solid var(--w20);
  border-top-color: var(--vi);
  border-radius: 50%;
  animation: pano-spin 0.8s linear infinite;
}

@keyframes pano-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  .about-pano__grid {
    grid-template-columns: 1fr;
  }

  .about-pano__name {
    font-size: 18px;
  }

  .about-pano__view {
    font-size: 14px;
  }

  .pano-modal__panel {
    width: calc(100vw - 24px);
    height: calc(100vh - 100px);
  }

  .pano-modal__title {
    top: 14px;
    left: 16px;
    font-size: 16px;
  }

  .pano-modal__close {
    top: 10px;
    right: 10px;
    width: 40px;
    height: 40px;
  }

  .pano-modal__close .icon {
    width: 20px;
    height: 20px;
  }

  .pano-modal__hint {
    bottom: 12px;
    font-size: 12px;
  }

  .pano-modal__loading {
    font-size: 14px;
  }

  .pano-spinner {
    width: 30px;
    height: 30px;
  }
}