/* Japan Business — Hero 背景与 Home 一致；内容区、移动端协调（Design Spec + UX 44px） */

/* ----- Hero：与 home .hero 一致的处理（jp.webp 铺满、底部对齐） ----- */
.japan-hero {
  position: relative;
  overflow: hidden;
  padding: 12vw 0 10vw;
  min-height: 100vh;
  background-image: url('../img/jp.webp');
  background-size: cover;
  background-position: center bottom;
  background-repeat: no-repeat;
}

.japan-hero__overlay {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 140%;
  background: radial-gradient(ellipse, rgba(245, 166, 35, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.japan-hero__inner {
  position: relative;
  padding-top: 2rem;
}

.japan-hero__title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  letter-spacing: 0.05em;
  color: var(--text-on-light);
}

.japan-hero__title--cn { font-family: var(--font-cn); }
.japan-hero__title--jp { font-family: var(--font-jp); }
.japan-hero__title--en { font-family: var(--font-display); }

.japan-hero__intro {
  max-width: 36rem;
  margin-top: 1rem;
  margin-bottom: 0;
  font-family: var(--font-cn);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-on-light);
  opacity: 0.92;
}

.japan-hero__inner .japan-explore-cta__btn {
  margin-top: 2rem;
}

/* ----- 内容区：留白与结构线（Ma） ----- */
.japan-content {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.japan-engines.grid-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.grid-section__item {
  border-left: 1px solid var(--hairline);
  padding-left: 1.5rem;
}

.grid-section__heading {
  font-family: var(--font-display);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.grid-section__heading-jp {
  font-family: var(--font-jp);
  font-weight: 400;
}

.grid-section__body {
  max-width: 28rem;
  font-family: var(--font-cn);
  font-size: 1rem;
  line-height: 1.8;
}

/* ----- 探索 CTA 按钮（位于 hero 内，hover 一圈阴影） ----- */
.japan-explore-cta__btn {
  display: inline-block;
  padding: 1rem 1.75rem;
  border: 1px solid var(--brand-gold);
  background: var(--brand-gold);
  color: var(--text-on-light);
  font-family: var(--font-display);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  cursor: pointer;
  box-shadow: none;
  transition: background-color var(--transition-fast) var(--ease-out),
              border-color var(--transition-fast) var(--ease-out),
              color var(--transition-fast) var(--ease-out),
              box-shadow var(--transition-fast) var(--ease-out);
}

.japan-explore-cta__btn:hover {
  background: #ddc05a;
  border-color: #ddc05a;
  color: var(--text-on-light);
  box-shadow: 0 0 0 2px rgba(201, 168, 76, 0.4), 0 0 28px rgba(201, 168, 76, 0.35);
}

.japan-explore-cta__btn:focus-visible {
  outline: 2px solid var(--brand-gold);
  outline-offset: 2px;
}

/* ----- 移动端（375/768 断点，正文字号 ≥16px，触摸 44px，无横向滚动） ----- */
@media (max-width: 767px) {
  .japan-hero {
    min-height: 72vh;
    padding: 22vw 0 24vw;
    display: flex;
    align-items: center;
  }

  .japan-hero__inner {
    padding-top: 0;
    width: 100%;
  }

  .japan-hero__title {
    font-size: clamp(1.375rem, 5vw, 1.75rem);
  }

  .japan-hero__intro {
    font-size: 1rem;
    line-height: 1.75;
  }

  .japan-content {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }

  .japan-engines.grid-section {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-bottom: 3rem;
  }

  .grid-section__item {
    border-left: 1px solid var(--hairline);
    padding-left: 1.25rem;
    max-width: none;
  }

  .grid-section__heading {
    font-size: 0.875rem;
    margin-bottom: 0.875rem;
  }

  .grid-section__body {
    font-size: 1rem;
    line-height: 1.8;
    max-width: none;
  }

  /* 触摸目标 ≥44px（UX 规范） */
  .japan-explore-cta__btn {
    min-height: 44px;
    margin-top: 1.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.8125rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .japan-hero__overlay { animation: none; }
}