/* V5 motion language, composed for the existing dark-first website. */
.hero h1 { font-size: clamp(42px, 4.3vw, 66px); line-height: 1.18; }
.button-primary { background: var(--accent); color: var(--page); }
.button-primary:hover { background: var(--accent-strong); }
.section { padding-block: clamp(72px, 8vw, 120px); }
.motion-panel,
.codex-live-showcase {
  border: 1px solid var(--line);
  border-radius: var(--radius-surface);
  background: linear-gradient(145deg, var(--surface-strong), var(--surface));
}
.motion-panel { padding: 24px; min-width: 0; }
.motion-panel-heading,
.codex-motion-footer,
.desktop-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.motion-panel-heading { font-size: 14px; font-weight: 650; }
.motion-toggle {
  padding: 8px 2px;
  border: 0;
  background: transparent;
  color: var(--text-soft);
  font: 500 12px/1.4 var(--body-font);
  white-space: nowrap;
  cursor: pointer;
}
.motion-toggle:hover { color: var(--accent); }
.motion-stage {
  --pet-size: clamp(190px, 19vw, 250px);
  position: relative;
  display: grid;
  place-items: center;
  min-height: 355px;
  padding-top: 45px;
  isolation: isolate;
}
.motion-stage::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: 25%; right: 25%; bottom: 30px;
  height: 14px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--text-faint) 10%, transparent);
  filter: blur(12px);
}
.pet-touch-target {
  position: relative;
  display: block;
  width: var(--pet-size);
  height: var(--pet-size);
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.pet-offset { position: relative; display: block; width: 100%; height: 100%; }
.pet-offset > .live-ball { display: block; width: 100%; height: 100%; }
.pet-offset svg { pointer-events: none; }
.thought-flow { position: absolute; inset: 0; z-index: 3; overflow: visible; pointer-events: none; }
.thought-flow svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.motion-bubble {
  position: absolute;
  top: 12px;
  left: 50%;
  width: max-content;
  max-width: calc(100% - 28px);
  margin: 0;
  padding: 11px 17px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-solid);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  text-align: center;
  transform: translateX(-50%);
  box-shadow: 0 8px 26px color-mix(in srgb, var(--page) 25%, transparent);
}
.motion-bubble::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: calc(50% - 4px);
  width: 8px; height: 8px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface-solid);
  transform: rotate(45deg);
}
.hero { overflow: clip; }
.hero-stage { display: flex; flex-direction: column; justify-content: center; overflow: visible; }
.hero-motion-stage { --pet-size: clamp(340px, 35vw, 500px); width: 100%; min-height: 550px; padding-top: 35px; }
.hero-motion-stage .motion-bubble { top: 2px; }
.hero-motion-toggle { position: absolute; right: 16px; bottom: 16px; display: inline-flex; align-items: center; justify-content: center; flex: 0 0 44px; width: 44px; min-width: 44px; height: 44px; padding: 0; border: 1px solid var(--text-faint); border-radius: 50%; background: var(--surface-solid); color: var(--text); box-shadow: 0 2px 10px color-mix(in srgb, var(--page) 30%, transparent); }
.hero-motion-toggle:hover, .hero-motion-toggle:focus-visible { color: var(--accent); border-color: var(--accent); }
.hero-motion-toggle svg { display: block; flex: none; width: 24px; height: 24px; }
.motion-icon-play, .hero-motion-toggle[aria-pressed="true"] .motion-icon-pause { display: none; }
.hero-motion-toggle[aria-pressed="true"] .motion-icon-play { display: block; }
.updates-section.section { padding-block: clamp(48px, 5vw, 72px); }
.updates-section .section-heading { margin-bottom: 24px; }
.updates-section .timeline { margin-left: 0; }
.updates-section .timeline article { grid-template-columns: 120px minmax(0, 1fr); gap: 24px; padding-block: 20px; }
.updates-history summary { display: flex; align-items: center; gap: 10px; width: fit-content; padding: 18px 0 4px; color: var(--text-soft); font-size: 14px; cursor: pointer; list-style: none; }
.updates-history summary::-webkit-details-marker { display: none; }
.updates-history summary:hover { color: var(--accent); }
.history-collapse, .updates-history[open] .history-expand { display: none; }
.updates-history[open] .history-collapse { display: inline; }
.updates-history[open] .history-chevron { transform: rotate(180deg); }
.motion-choices { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; }
.motion-choices button {
  min-height: 40px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
  color: var(--text-soft);
  font: 600 13px/1.2 var(--body-font);
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease;
}
.motion-choices button:hover,
.motion-choices button[aria-pressed="true"] { color: var(--accent); background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 44%, var(--line)); }
.motion-caption { margin: 16px 0 0; color: var(--text-soft); font-size: 12px; text-align: center; }
.feature-playground { align-self: center; }
.codex-live-showcase { padding: 24px; min-width: 0; }
.codex-live-showcase .quota-playground { padding: 0; }
.codex-pet-row { display: grid; grid-template-columns: minmax(0, 1fr) 160px; align-items: center; gap: 20px; margin-top: 14px; }
.codex-pet-row .motion-stage { --pet-size: 108px; min-height: 174px; padding-top: 24px; }
.codex-pet-row .motion-stage::after { bottom: 14px; }
.codex-pet-copy { padding-left: 8px; }
.codex-pet-copy > span { color: var(--accent); font-size: 13px; font-weight: 650; }
.codex-pet-copy > p { margin: 9px 0 0; font-size: 16px; line-height: 1.6; }
.codex-motion-footer { padding-top: 12px; border-top: 1px solid var(--line); color: var(--text-soft); font-size: 11px; }
.desktop-showcase { width: min(1180px, 100%); margin-inline: auto; }
.desktop-scene {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 42%;
  align-items: center;
  min-height: 440px;
  padding: 40px 54px;
  border: 1px solid var(--line);
  border-radius: var(--radius-surface);
  background: linear-gradient(125deg, var(--surface-solid), color-mix(in srgb, var(--accent) 9%, var(--page)));
  overflow: hidden;
  isolation: isolate;
}
.desktop-scene-copy { z-index: 1; max-width: 400px; }
.desktop-scene-copy > span { color: var(--accent); font-size: 13px; font-weight: 600; }
.desktop-scene-copy h3 { margin: 16px 0; font-size: clamp(27px, 3vw, 40px); line-height: 1.3; }
.desktop-scene-copy p { margin: 0; font-size: 15px; }
.desktop-scene .motion-stage { --pet-size: clamp(180px, 18vw, 250px); padding-top: 64px; }
.desktop-scene .motion-bubble { top: 22px; }
.desktop-orbit { position: absolute; z-index: -1; width: 620px; height: 620px; border: 1px solid var(--line); border-radius: 50%; right: -130px; bottom: -350px; opacity: .35; pointer-events: none; }
.desktop-orbit-two { width: 820px; height: 820px; right: -230px; bottom: -450px; opacity: .18; }
.desktop-toolbar { margin-top: 20px; }
.desktop-toolbar .motion-choices { justify-content: flex-start; }
[data-motion-scene][data-motion-error] .pet-touch-target { display: none; }
[data-motion-scene][data-motion-error] .motion-stage::before { content: "动效暂不可用，请刷新页面重试。"; font-size: 14px; color: var(--text-soft); }
@media (max-width: 1100px) {
  .codex-pet-row { grid-template-columns: minmax(0, 1fr) 120px; gap: 8px; }
  .desktop-scene { padding-inline: 34px; }
}
@media (max-width: 767px) {
  .hero h1 { font-size: clamp(36px, 8vw, 46px); }
  .hero-stage { min-height: 380px; }
  .hero .hero-motion-stage { --pet-size: clamp(260px, 80vw, 330px); min-height: 390px; padding-top: 50px; }
  .hero-motion-toggle { right: 4px; bottom: 0; }
  .updates-section .timeline article { grid-template-columns: 1fr; gap: 8px; padding-block: 18px; }
  .motion-panel,
  .codex-live-showcase { padding: 18px; }
  .motion-stage { --pet-size: 210px; min-height: 325px; padding-top: 54px; }
  .motion-choices { gap: 7px; }
  .motion-choices button { padding-inline: 12px; font-size: 12px; }
  .codex-pet-row { grid-template-columns: minmax(0, 1fr) 104px; }
  .codex-pet-row .motion-stage { --pet-size: 92px; min-height: 145px; }
  .codex-pet-copy { padding-left: 0; }
  .codex-pet-copy > p { font-size: 14px; }
  .codex-motion-footer { gap: 10px; align-items: baseline; }
  .desktop-scene { grid-template-columns: 1fr; gap: 16px; padding: 28px 20px 16px; }
  .desktop-scene-copy { max-width: 100%; }
  .desktop-scene-copy h3 { margin: 10px 0; font-size: 27px; }
  .desktop-scene .motion-stage { --pet-size: 205px; min-height: 310px; padding-top: 58px; }
  .desktop-scene .motion-bubble { top: 10px; }
  .desktop-toolbar { align-items: flex-start; gap: 10px; }
  .desktop-toolbar .motion-choices { max-width: 230px; }
  .desktop-toolbar .motion-choices button { flex: 1 0 42%; }
}
@media (prefers-reduced-motion: reduce) {
  .motion-choices button { transition: none; }
}