.page-epc .header {
  background: #fff;
  color: var(--t1);
}

.page-epc .logo__face--light {
  opacity: 0;
}

.page-epc .logo__face--dark {
  opacity: 1;
}

.page-epc .header:not(.is-solid):not(.is-drop) {
  background: transparent;
  color: #fff;
}

.page-epc .header:not(.is-solid):not(.is-drop) .logo__face--light {
  opacity: 1;
}

.page-epc .header:not(.is-solid):not(.is-drop) .logo__face--dark {
  opacity: 0;
}

/* 顶部横幅（与案例中心保持一致） */
.epc-banner {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.epc-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(0, 0, 0, 0.45);
}

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

.epc-banner__copy {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
}

.epc-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);
}

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

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

.epc-banner__crumb {
  position: absolute;
  left: var(--pad-x);
  bottom: 0.48rem;
  z-index: 2;
  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);
}

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

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

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

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

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

.epc-sys {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.3rem;
  padding: 0.4rem var(--pad-x) 0;
}

.epc-sys .btn {
  width: 100%;
}

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

.epc-block h2 {
  font-size: var(--fs-50);
  font-weight: 600;
  line-height: var(--lh-133);
  text-align: center;
}

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

.epc-copy {
  margin-top: 0.48rem;
}

.epc-copy p {
  font-size: var(--fs-20);
  font-weight: 400;
  line-height: var(--lh-2);
  color: var(--t2);
}

.epc-copy p + p {
  margin-top: 0.2rem;
}

.epc-gallery {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.2rem;
  margin-top: 1rem;
}

.epc-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 0.48rem;
  height: 0.48rem;
  border-radius: var(--r-card);
  color: var(--t1);
  transition: color var(--dur-3);
}

.epc-arrow:hover {
  color: var(--vi);
}

.epc-arrow.swiper-button-disabled {
  opacity: 1;
  pointer-events: none;
}

.epc-mode,
.epc-cases {
  width: 100%;
  overflow: hidden;
}

.epc-mode .swiper-slide {
  width: 5.4rem;
}

.epc-shot {
  height: 2.6rem;
  overflow: hidden;
  border-radius: var(--r-card);
  background: #E9ECEF;
}

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

.epc-shot:hover img {
  transform: scale(1.04);
}

.epc-step__grid,
.epc-fold__grid {
  display: grid;
  gap: 0.3rem;
  margin-top: 1rem;
}

.epc-step__grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.epc-step__pic {
  height: 3.6rem;
  overflow: hidden;
  border-radius: var(--r-card);
  background: #E9ECEF;
}

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

.epc-step:hover .epc-step__pic img {
  transform: scale(1.04);
}

.epc-step h3,
.epc-fold h3,
.epc-case h3 {
  font-size: var(--fs-24);
  font-weight: 600;
  line-height: var(--lh-133);
}

.epc-step h3 {
  margin-top: 0.2rem;
}

.epc-points {
  margin-top: 0.2rem;
}

.epc-points li {
  font-size: var(--fs-18);
  font-weight: 400;
  line-height: var(--lh-18);
  color: var(--t2);
}

.epc-points li + li {
  margin-top: 0.2rem;
}

.epc-points li::before {
  content: "·";
  margin-right: 0.08rem;
}

.epc-fold__grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.epc-fold {
  position: relative;
  height: 5.2rem;
  overflow: hidden;
  border-radius: var(--r-card);
  box-shadow: none;
  font-size: var(--fs-18);
  transition: box-shadow var(--dur-3);
}

.epc-fold:hover {
  box-shadow: var(--sh-card);
}

.epc-fold__bg,
.epc-fold__bg .ph {
  position: absolute;
  inset: 0;
}

.epc-fold__bg img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-3);
}

.epc-fold__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.66) 0%, rgba(0, 0, 0, 0.16) 54%, rgba(0, 0, 0, 0.62) 100%);
}

.epc-fold:hover .epc-fold__bg img {
  transform: scale(1.04);
}

.epc-fold__bg .ph {
  align-items: flex-end;
  padding-bottom: 0.24rem;
}

.epc-fold__rest {
  position: relative;
  z-index: 1;
  padding: 0.28rem 0.24rem 0;
  color: #fff;
  transition: opacity var(--dur-3);
}

.epc-fold__rest h3 {
  color: #fff;
}

.epc-fold__rest .epc-fold__sum {
  color: rgba(255, 255, 255, 0.82);
}

.epc-fold__rest .epc-fold__more {
  color: #fff;
}

.epc-fold__rest .epc-fold__more:hover {
  color: var(--vi);
}

.epc-fold.is-open .epc-fold__rest {
  opacity: 0;
  pointer-events: none;
}

.epc-fold__sum {
  margin-top: 0.2rem;
  font-size: var(--fs-18);
  font-weight: 400;
  line-height: var(--lh-18);
  color: var(--t2);
}

.epc-fold__more {
  display: block;
  width: fit-content;
  margin-top: 0.2rem;
  padding: 0;
}

.epc-fold__glass {
  position: absolute;
  z-index: 2;
  left: 0.16rem;
  right: 0.16rem;
  bottom: 0.16rem;
  padding: 0.24rem 0.24rem 0.28rem;
  border-radius: var(--r-glass);
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  transform: translateY(calc(100% + 0.16rem));
  transition: transform var(--dur-5) ease;
  pointer-events: none;
}

.epc-fold.is-open .epc-fold__glass {
  transform: translateY(0);
  pointer-events: auto;
}

.epc-fold__glass h3 + .epc-points {
  margin-top: 0.2rem;
}

.epc-fold__glass .epc-points li {
  color: var(--t1);
}

.epc-cases {
  margin-top: 1rem;
}

.epc-cases .swiper-slide {
  width: 5.4rem;
}

.epc-case__pic {
  height: 3.2rem;
  overflow: hidden;
  border-radius: var(--r-card);
}

.epc-case__link {
  display: block;
  color: inherit;
}

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

.epc-case:hover .epc-case__pic img {
  transform: scale(1.05);
}

.epc-case:hover h3 {
  color: var(--vi);
}

.epc-case h3 {
  margin-top: 0.2rem;
  line-height: var(--lh-15);
  transition: color var(--dur-3);
}

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

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

  .epc-sys,
  .epc-step__grid,
  .epc-fold__grid {
    grid-template-columns: 1fr;
  }

  .epc-mode .swiper-slide,
  .epc-cases .swiper-slide {
    width: calc(100% - 40px);
  }

  .epc-shot,
  .epc-step__pic,
  .epc-case__pic {
    height: 160px;
  }

  .epc-fold {
    height: 420px;
  }
}