/* 官网 H5 增强层：保持桌面视觉不变，只补齐手机和平板交互与安全区。 */
html[data-cosmic-mode="static"] #dream-canvas {
  display: none;
}

html[data-cosmic-mode="static"] .cosmic-fallback {
  opacity: .92;
}

@media (max-width: 900px) {
  :root {
    --header-h: calc(64px + env(safe-area-inset-top));
  }

  html,
  body {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
  }

  body.nav-open {
    overflow: hidden;
    overscroll-behavior: none;
  }

  .site-header {
    height: var(--header-h);
    grid-template-columns: 1fr auto;
    gap: 12px;
    padding: env(safe-area-inset-top) max(16px, env(safe-area-inset-right)) 0 max(16px, env(safe-area-inset-left));
  }

  .brand {
    position: relative;
    z-index: 3;
    min-height: 44px;
  }

  .nav-toggle {
    position: relative;
    z-index: 4;
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    display: block;
    justify-self: end;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(255, 255, 255, .055);
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
  }

  .nav-toggle span {
    left: 13px;
    width: 17px;
  }

  .nav-toggle span:first-child {
    top: 17px;
  }

  .nav-toggle span:last-child {
    top: 25px;
  }

  .nav-toggle[aria-expanded="true"] span:first-child,
  .nav-toggle[aria-expanded="true"] span:last-child {
    top: 21px;
  }

  .header-cta {
    display: none;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 2;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: clamp(10px, 2.6dvh, 25px);
    padding: calc(var(--header-h) + 22px) max(28px, env(safe-area-inset-right)) calc(28px + env(safe-area-inset-bottom)) max(28px, env(safe-area-inset-left));
    overflow-x: hidden;
    overflow-y: auto;
    background: rgba(2, 7, 17, .985);
    opacity: 0;
    visibility: hidden;
    transform: none;
    transition: opacity .3s ease, visibility .3s ease;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  .site-nav[aria-hidden="true"] {
    pointer-events: none;
  }

  .nav-open .site-nav {
    opacity: 1;
    visibility: visible;
  }

  .site-nav::before {
    right: -4vw;
    bottom: max(1dvh, env(safe-area-inset-bottom));
  }

  .site-nav-item {
    width: 100%;
    min-height: 44px;
    display: flex;
    align-items: center;
    padding: 4px 0;
    font-family: var(--display);
    font-size: clamp(30px, 8vw, 55px);
    font-weight: 500;
    letter-spacing: -.04em;
    text-align: left;
    touch-action: manipulation;
  }

  .site-nav-item span {
    min-width: 24px;
  }

  .section,
  .model-section,
  .final-cta {
    scroll-margin-top: var(--header-h);
  }

  .hero,
  .hero-content {
    min-height: max(700px, 100svh);
    min-height: max(700px, 100dvh);
  }

  .hero-actions .button,
  .button,
  .text-link,
  .footer-legal a {
    min-height: 44px;
    touch-action: manipulation;
  }

  .text-link,
  .footer-legal a {
    display: inline-flex;
    align-items: center;
  }

  .model-prism {
    width: 100%;
    max-width: 100%;
    margin-right: auto;
    margin-left: auto;
  }

  .model-prism-art,
  .work-card img,
  .story-media img,
  .canvas-node img {
    max-width: 100%;
  }

  .site-footer {
    width: calc(100% - 28px);
    max-width: calc(100% - env(safe-area-inset-left) - env(safe-area-inset-right));
    padding-bottom: env(safe-area-inset-bottom);
  }
}

@media (max-width: 620px) {
  .site-header {
    padding-right: max(12px, env(safe-area-inset-right));
    padding-left: max(12px, env(safe-area-inset-left));
  }

  .site-nav {
    padding-right: max(24px, env(safe-area-inset-right));
    padding-left: max(24px, env(safe-area-inset-left));
  }

  .hero-content {
    width: calc(100% - 28px);
    max-width: calc(100% - env(safe-area-inset-left) - env(safe-area-inset-right));
    padding-bottom: calc(104px + env(safe-area-inset-bottom));
  }

  .hero-actions .button {
    min-height: 48px;
  }

  .studio-window {
    max-width: 100%;
  }

  .work-card,
  .work-wide,
  .work-tall {
    min-width: 0;
  }

  .final-cta {
    padding-right: max(18px, env(safe-area-inset-right));
    padding-bottom: calc(110px + env(safe-area-inset-bottom));
    padding-left: max(18px, env(safe-area-inset-left));
  }

  .site-footer {
    width: calc(100% - 28px);
  }
}

@media (max-width: 900px) and (max-height: 600px) {
  .site-nav {
    justify-content: flex-start;
    gap: 4px;
    padding-top: calc(var(--header-h) + 10px);
  }

  .site-nav-item {
    min-height: 44px;
    font-size: clamp(23px, 6.5dvh, 32px);
  }
}

@media (hover: none) and (pointer: coarse) {
  .work-card:hover img,
  .header-cta:hover,
  .button:hover,
  .text-link:hover {
    transform: none;
  }

  .button:active,
  .nav-toggle:active,
  .site-nav-item:active {
    opacity: .78;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav,
  .nav-toggle span {
    transition-duration: .01ms !important;
  }
}