@media (max-width: 960px) {
  .nav-shell {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .menu-button {
    display: grid;
  }

  .nav-actions .language-link,
  .nav-actions .button {
    display: none;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    display: none;
    padding: 14px;
    background: rgba(255, 255, 255, .96);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
  }

  .nav-links.is-open {
    display: grid;
  }

  .nav-links a {
    padding: 13px 10px;
    border-bottom: 1px solid var(--line);
  }

  .section-head,
  .page-hero__grid,
  .contact-band,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .page-hero {
    min-height: auto;
  }

  .page-index {
    max-width: 620px;
  }

  .content-card {
    grid-column: span 6;
  }
}

/* 公共断点由项目负责人统一维护；当前虽只验收桌面端，也不能破坏已有降级布局。 */
@media (max-width: 760px) {
  :root {
    --page-pad: 20px;
    --section-space: 72px;
  }

  .site-header {
    top: 10px;
  }

  .nav-shell {
    width: calc(100% - 20px);
    min-height: 60px;
    padding: 8px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
    flex-basis: 40px;
  }

  .brand-name small {
    display: none;
  }

  .section-head {
    gap: 18px;
    margin-bottom: 38px;
  }

  .section-title {
    font-size: clamp(34px, 11vw, 52px);
  }

  .boundary-list {
    grid-template-columns: 1fr;
  }

  .boundary-column + .boundary-column {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .image-slot {
    min-height: 410px;
    padding: 16px;
  }

  .image-slot::before {
    top: 14px;
    right: 14px;
  }

  .page-hero {
    padding: 136px 0 64px;
  }

  .page-hero h1 {
    font-size: clamp(48px, 15vw, 72px);
  }

  .content-grid {
    grid-template-columns: 1fr;
  }

  .content-card {
    grid-column: auto;
    min-height: 230px;
  }

  .contact-band {
    padding: 28px 20px;
  }

  .footer-meta {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  /* 尊重系统减少动效设置；内容保持可见，只把装饰性动画压缩到不可感知时长。 */
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}