.section {
  box-shadow: 0 1.125rem 3rem rgba(15, 23, 42, 0.08);
}

/* ---------------------------顶部图片----------------------------- */
.smart_vessel-hero {
  height: 100vh;
  min-height: 56.25vw;
}

.smart_vessel-hero-container {
  width: 100%;
  height: 100%;
  /* background: url("/assets/images/solution/marine_power_system-hero.png")
      no-repeat center center; */
  background: url("/assets/images/solution/smart_vessel_system-hero.webp");
  overflow: hidden;
  background-repeat: no-repeat;
  background-position: top;
  background-size: cover;
}

.hero-title-box {
  position: absolute;
  top: 10%;
  left: 7.5rem;
  color: #fff;
}

.hero-title-box-title {
  font-size: 3.5rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  margin: 0;
  text-shadow: 0.125rem 0.125rem 0.25rem rgba(0, 0, 0, 0.5);
}

.hero-title-box-subtitle {
  font-size: 1.5rem;
  margin-top: 0.625rem;
  letter-spacing: 0.12em;
  text-shadow: 0.125rem 0.125rem 0.25rem rgba(0, 0, 0, 0.5);
}

.system-list-box {
  position: absolute;
  top: 35%;
  /* transform: translate(0, -50%); */
  left: 3.125rem;
}

.system-list-box-b {
  display: flex;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.system-list-box-b-item {
  width: 25rem;
  /* 宽高比16/9 */
  aspect-ratio: 16 / 9;
  background-image: var(--img);
  background-size: cover;
  background-repeat: no-repeat;
  border-radius: 0.3125rem;
  overflow: hidden;

  /* 左上角斜切 */
  clip-path: polygon(1.5rem 0, 100% 0, 100% 100%, 0 100%, 0 1.5rem);
}

.system-item-bg {
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 1), rgba(0, 0, 0, 0));
}

.system-item-t {
  color: #fff;
  font-size: 1.5rem;
  text-align: center;
  padding: 1.25rem 1.5625rem;
  letter-spacing: 0.12em;
  text-shadow: 0.125rem 0.125rem 0.25rem rgba(0, 0, 0, 0.5);
}

.system-but-a {
  display: inline-flex;
  position: absolute;
  right: 10%;
  top: 50%;
  transform: translate(0, -50%);
}

.system-but-a-item {
  position: relative;
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  text-decoration: none;
  background-color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

/* hover 状态 */
.system-but-a-item:hover {
  transform: scale(1.03);
}

/* ===============================
   产品页移动端适配
================================ */
@media (max-width: 768px) {
  .hero-title-box {
    width: 80%;
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translate(-50%, 0);
    text-align: center;
    color: #fff;
  }
  .hero-title-box-title {
    font-size: 3rem;
  }
  .system-list-box {
    display: none;
  }
  .system-but-a {
    right: 50%;
    transform: translate(50%, -50%);
    top: 70%;
  }
}