/* Phone layout: keep the desktop composition, give each element a clear row. */
@media (max-width: 700px) {
  .home-next.about-section { padding: 52px 24px 56px; min-height: auto; gap: 36px; }
  .about-section .about-label { margin-left: 8px; }
  .about-section .about-content { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .about-section .about-lead { gap: 12px; width: 100%; min-width: 0; }
  .about-section .about-slogan { font-size: clamp(32px, 8.7vw, 48px); line-height: 1.12; }
  .about-section .about-interaction { position: relative; height: 164px; align-items: flex-end; gap: 4px; }
  .about-section .about-red-button,
  .about-section .about-red-button:hover,
  .about-section .about-red-button:active { flex: 0 0 156px; margin: 0 0 14px; transform: rotate(12deg) scale(.78); transform-origin: left bottom; }
  .about-section .dd-portal { position: absolute; width: 64%; max-width: 240px; height: 210px; right: -8px; bottom: -4px; margin: 0; }
  .about-section .home-about-paw-trail { width: 150px; height: 32px; justify-self: start; margin: 0 0 0 8px; }
  .about-section .home-about-paw { left: calc(var(--step)*35px); }
  .about-section .home-about-paw:nth-child(even) { left: calc(var(--step)*35px); top: 9px; }
  .about-section .about-description { margin: 0; width: 100%; max-width: none; font-size: 14px; font-weight: 400; line-height: 1.85; color: #61645e; }
  .service-navigation { padding: 40px 24px 64px; }
  .service-label { margin-left: 8px; }
  .service-row { padding: 20px 0; }
  .service-roll > span { font-size: clamp(26px, 7.6vw, 48px); }
  .bone-menu-toggle { width: 42px; height: 72px; top: 14px; right: 14px; }
  .bone-menu-toggle .menu-bone { width: 22px; height: 13px; animation-name: mobile-bone-drop; }
  .bone-menu-caption { font-size: 7px; top: calc(100% + 6px); }
  @keyframes mobile-bone-drop { 0%,100% { transform: translateY(0); } 50% { transform: translateY(44px); } }
  .media-button { width: 52px; right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); background: #f5f4ef; }
  .media-button > svg { display: none; }
  .media-button .media-button-arrow { width: 26px; height: 26px; color: #007f69; }
  #ai-music { padding: 64px 24px 88px; }
  #ai-music .music-layout { gap: 32px; }
  #ai-music .music-intro h2 { font-size: clamp(44px, 12vw, 64px); }
  #ai-music .card { padding: 0; gap: 20px; flex-direction: column; align-items: stretch; }
  #ai-music .mask { width: 180px; align-self: center; }
  #ai-music .info { width: 100%; }
  #ai-music .scales { width: 40px; height: 40px; }
  #ai-music .ctrl { width: 44px; height: 44px; }
  #ai-music .ctrl-play { width: 48px; height: 48px; }
  #ai-music .track-info { min-height: 56px; }
}