/* ============================================
   Launcher / Start Screen Styles
   ============================================ */

/* --- Overlay Container --- */
.launcher-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background-color: var(--launcher-bg-base, var(--launcher-surface));
  overflow: hidden;
  font-family: var(
    --font-ui,
    -apple-system,
    BlinkMacSystemFont,
    'PingFang SC',
    'Microsoft YaHei',
    'Segoe UI',
    sans-serif
  );
  perspective: 1200px;
  overscroll-behavior: none;
  --launcher-desktop-scale: 1;
  --launcher-nav-max-width: 960px;
  --launcher-content-max-width: 2200px;
  --launcher-bg-base: var(--launcher-surface);
  --launcher-bg-image-blur: 0px;
  --launcher-bg-image-opacity: 1;
  --launcher-bg-image-scale: 1;
  --launcher-bg-effects-blur: 0px;
  --launcher-bg-gradient-opacity: 0;
  --launcher-bg-vignette-opacity: 0;
  --launcher-bg-scanlines-opacity: 0;
  --launcher-bg-scanlines-blur: 0px;
  transition: background-color 0.42s ease;
}

/* Turnstile exit: overlay becomes transparent so game UI shows through */
.launcher-overlay.launcher--turnstile-exit {
  pointer-events: none;
  background-color: transparent;
}

.launcher-overlay.launcher--hidden {
  display: none;
}

@media (min-width: 1920px) {
  .launcher-overlay {
    --launcher-desktop-scale: 1.12;
  }
}

@media (min-width: 2560px) {
  .launcher-overlay {
    --launcher-desktop-scale: 1.24;
  }
}

@media (min-width: 3840px) {
  .launcher-overlay {
    --launcher-desktop-scale: 1.36;
  }
}

/* --- Background Image Layer --- */
.launcher-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.launcher-bg picture {
  display: block;
  width: 100%;
  height: 100%;
}

.launcher-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: var(--launcher-bg-image-opacity, 1);
  filter: blur(var(--launcher-bg-image-blur, 0px));
  transform: scale(var(--launcher-bg-image-scale, 1));
  transition:
    filter 0.42s ease,
    opacity 0.42s ease,
    transform 0.42s ease;
}

.launcher-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(
      circle,
      transparent 50%,
      rgba(0, 0, 0, var(--launcher-bg-vignette-opacity, 0)) 100% /* ui-lint-allow */
    ),
    linear-gradient(
      to right,
      rgba(0, 0, 0, var(--launcher-bg-gradient-opacity, 0)) 0%, /* ui-lint-allow */
      rgba(0, 0, 0, calc(var(--launcher-bg-gradient-opacity, 0) * 0.55)) 45%, /* ui-lint-allow */
      transparent 100%
    );
  filter: blur(var(--launcher-bg-effects-blur, 0px));
  transition:
    filter 0.42s ease,
    background 0.42s ease;
}

.launcher-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    transparent,
    transparent 50%,
    rgba(0, 0, 0, var(--launcher-bg-scanlines-opacity, 0)) 50%, /* ui-lint-allow */
    rgba(0, 0, 0, var(--launcher-bg-scanlines-opacity, 0)) /* ui-lint-allow */
  );
  background-size: 100% 4px;
  filter: blur(var(--launcher-bg-scanlines-blur, 0px));
  transition:
    filter 0.42s ease,
    background 0.42s ease;
}

.launcher-overlay.launcher--transition-to-intro,
.launcher-overlay.launcher--intro-enter,
.launcher-overlay.launcher--intro-active {
  --launcher-bg-base: var(--surface-canvas);
  --launcher-bg-image-scale: 1.06;
  --launcher-bg-effects-blur: 10px;
  --launcher-bg-scanlines-blur: 6px;
}

.launcher-overlay.launcher--transition-to-intro[data-intro-step='1'],
.launcher-overlay.launcher--intro-enter[data-intro-step='1'],
.launcher-overlay.launcher--intro-active[data-intro-step='1'] {
  --launcher-bg-image-blur: 14px;
  --launcher-bg-image-opacity: 0.88;
  --launcher-bg-gradient-opacity: 0.68;
  --launcher-bg-vignette-opacity: 0.52;
  --launcher-bg-scanlines-opacity: 0.03;
}

.launcher-overlay.launcher--transition-to-intro[data-intro-step='2'],
.launcher-overlay.launcher--intro-enter[data-intro-step='2'],
.launcher-overlay.launcher--intro-active[data-intro-step='2'] {
  --launcher-bg-image-blur: 17px;
  --launcher-bg-image-opacity: 0.72;
  --launcher-bg-gradient-opacity: 0.34;
  --launcher-bg-vignette-opacity: 0.22;
  --launcher-bg-scanlines-opacity: 0.01;
}

.launcher-overlay.launcher--transition-to-intro[data-intro-step='3'],
.launcher-overlay.launcher--intro-enter[data-intro-step='3'],
.launcher-overlay.launcher--intro-active[data-intro-step='3'] {
  --launcher-bg-image-blur: 20px;
  --launcher-bg-image-opacity: 0.55;
  --launcher-bg-gradient-opacity: 0.1;
  --launcher-bg-vignette-opacity: 0.06;
  --launcher-bg-scanlines-opacity: 0;
}

/* --- Content Layout --- */
.launcher-content {
  position: relative;
  z-index: 10;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: calc(48px + var(--safe-top, 0px)) calc(64px + var(--safe-right, 0px))
    calc(48px + var(--safe-bottom, 0px)) calc(64px + var(--safe-left, 0px));
  max-width: 1400px;
}

.launcher-title-area,
.launcher-nav,
.launcher-version,
.launcher-profile,
.launcher-news,
.launcher-intro {
  transition:
    opacity 0.22s ease,
    visibility 0.22s ease;
}

.launcher-intro {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  padding: calc(48px + var(--safe-top, 0px)) calc(64px + var(--safe-right, 0px))
    calc(48px + var(--safe-bottom, 0px)) calc(64px + var(--safe-left, 0px));
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.launcher-intro-panel {
  width: min(880px, 100%);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.launcher-intro-stage {
  width: min(880px, 100%);
  position: relative;
  padding-top: 84px;
}

.launcher-ui-preview {
  display: none;
  pointer-events: none;
}

.launcher-intro.launcher-intro--api-preview .launcher-intro-stage {
  --launcher-preview-sidebar-width: clamp(300px, 26vw, 380px);
  width: min(1480px, 100%);
  min-height: clamp(680px, 76vh, 820px);
  padding-top: 0;
  padding-right: calc(var(--launcher-preview-sidebar-width) + 28px);
}

.launcher-intro.launcher-intro--api-preview .launcher-intro-panel {
  position: relative;
  z-index: 1;
  width: min(820px, 100%);
  margin-top: 84px;
}

.launcher-intro.launcher-intro--api-preview .launcher-intro-copy {
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--surface-page) 62%, transparent) 0%,
    color-mix(in srgb, var(--surface-page) 48%, transparent) 48%,
    color-mix(in srgb, var(--surface-page) 28%, transparent) 76%,
    color-mix(in srgb, var(--surface-page) 12%, transparent) 100%
  );
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--text-invert) 12%, transparent),
    var(--shadow-lg);
  backdrop-filter: blur(20px) saturate(118%);
  -webkit-backdrop-filter: blur(20px) saturate(118%);
}

.launcher-intro.launcher-intro--api-preview .launcher-ui-preview {
  display: block;
  position: absolute;
  inset: 0;
  z-index: 0;
}

.launcher-ui-preview-header {
  display: none;
}

.launcher-ui-preview-title-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-width: 0;
  flex: 1;
}

.launcher-ui-preview-title-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.launcher-ui-preview-logo {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 24px -18px var(--overlay-60);
  flex-shrink: 0;
}

.launcher-ui-preview-title-stack {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.launcher-ui-preview-title {
  color: var(--launcher-text);
  font-size: 1.2rem;
  font-weight: var(--weight-extrabold);
  line-height: 1.15;
  letter-spacing: 0.03em;
  text-shadow: 0 4px 18px var(--overlay-30);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.launcher-ui-preview-subtitle {
  color: var(--launcher-text-muted);
  font-size: 0.72rem;
  font-weight: var(--weight-bold);
  line-height: 1.2;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.launcher-ui-preview-mode-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 2px;
  background: var(--sheen-12);
  border: 1px solid var(--launcher-border-strong);
  border-radius: var(--radius-xs);
  overflow: hidden;
  flex-shrink: 0;
}

.launcher-ui-preview-mode-label {
  position: relative;
  z-index: 1;
  min-width: 86px;
  padding: 0 14px;
  color: var(--launcher-text-muted);
  font-size: 0.78rem;
  font-weight: var(--weight-bold);
  line-height: 30px;
  text-align: center;
  white-space: nowrap;
}

.launcher-ui-preview-mode-label--active {
  color: var(--launcher-text);
}

.launcher-ui-preview-mode-slider {
  position: absolute;
  top: 2px;
  left: 2px;
  width: calc(50% - 2px);
  height: calc(100% - 4px);
  border-radius: var(--radius-xs);
  background: var(--primary-gradient);
  box-shadow: 0 10px 24px -16px color-mix(in srgb, var(--brand-primary) 72%, transparent);
}

.launcher-ui-preview-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.launcher-ui-preview-tile.header-tile {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  border: 1px solid var(--sheen-12);
  background: var(--sheen-8);
  color: var(--launcher-text);
  box-shadow:
    inset 0 1px 0 var(--sheen-15),
    0 18px 28px -24px var(--overlay-55);
}

.launcher-ui-preview-tile.header-tile .material-symbols-outlined {
  font-size: 22px;
  margin-bottom: 4px;
}

.launcher-ui-preview-icon--npc {
  color: var(--brand-secondary);
}

.launcher-ui-preview-icon--summary {
  color: var(--icon-muted);
}

.launcher-ui-preview-icon--map {
  color: var(--brand-primary);
}

.launcher-ui-preview-icon--save {
  color: var(--brand-accent);
}

.launcher-ui-preview-icon--settings {
  color: var(--icon-subtle);
}

.launcher-ui-preview-tile.header-tile > span:not(.material-symbols-outlined):not(.header-badge) {
  font-size: 0.68rem;
  font-weight: var(--weight-bold);
  line-height: 1.05;
}

.launcher-ui-preview-tile--npc,
.launcher-ui-preview-tile--summary {
  border-color: var(--launcher-border-strong);
  background: var(--sheen-12);
}

.launcher-ui-preview-sidebar {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: var(--launcher-preview-sidebar-width, 340px);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.launcher-ui-preview-summary,
.launcher-ui-preview-npc {
  overflow: hidden;
  background: var(--sheen-50);
  box-shadow:
    inset 0 1px 0 var(--sheen-25),
    0 26px 40px -32px var(--overlay-55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  opacity: 0;
  transform: translateX(28px);
  filter: blur(16px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease,
    filter 0.6s ease;
}

.launcher-ui-preview-summary {
  flex: 0 0 38%;
  min-height: 248px;
}

.launcher-ui-preview-npc {
  flex: 1;
  min-height: 320px;
}

.launcher-ui-preview-summary .summary-list,
.launcher-ui-preview-npc .npc-card-list {
  background: transparent;
}

.launcher-ui-preview-summary .summary-empty {
  padding-top: 52px;
  padding-bottom: 42px;
}

.launcher-ui-preview-npc .npc-empty {
  padding-top: 54px;
}

.launcher-intro.launcher-intro--api-preview .launcher-ui-preview-header {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.launcher-intro.launcher-intro--api-preview .launcher-ui-preview-summary {
  opacity: 1;
  transform: translateX(0);
  filter: blur(0);
  transition-delay: 0.12s;
}

.launcher-intro.launcher-intro--api-preview .launcher-ui-preview-npc {
  opacity: 1;
  transform: translateX(0);
  filter: blur(0);
  transition-delay: 0.22s;
}

.launcher-intro-copy {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 36px 30px 30px;
  border-radius: 30px;
  background: linear-gradient(
    180deg,
    var(--overlay-55) 0%,
    var(--overlay-50) 44%,
    var(--overlay-35) 68%,
    var(--overlay-20) 84%,
    var(--overlay-5) 100%
  );
  box-shadow:
    inset 0 1px 0 var(--sheen-12),
    0 28px 52px -30px var(--overlay-60);
  backdrop-filter: blur(20px) saturate(118%);
  -webkit-backdrop-filter: blur(20px) saturate(118%);
}

.launcher-intro-copy--api-setup {
  padding-bottom: 34px;
}

.launcher-intro-title {
  position: relative;
  z-index: 1;
  font-family: var(
    --font-ui,
    -apple-system,
    BlinkMacSystemFont,
    'PingFang SC',
    'Microsoft YaHei',
    'Segoe UI',
    sans-serif
  );
  font-size: clamp(2.6rem, 5vw, 4.6rem);
  font-weight: var(--weight-extrabold);
  line-height: 1.12;
  letter-spacing: 0.05em;
}

.launcher-intro-text {
  max-width: 100%;
  position: relative;
  z-index: 1;
  font-size: clamp(1.05rem, 1.7vw, 1.34rem);
  font-weight: var(--weight-medium);
  line-height: 1.95;
  white-space: pre-line;
}

.launcher-intro-panel[data-intro-step='2'] .launcher-intro-title {
  max-width: 100%;
  font-size: clamp(2.1rem, 3.8vw, 3.2rem);
  line-height: 1.18;
}

.launcher-intro-panel[data-intro-step='2'] {
  gap: 18px;
}

.launcher-intro-panel[data-intro-step='2'] .launcher-intro-copy {
  gap: 20px;
  padding: 30px 28px 24px;
}

.launcher-intro-panel[data-intro-step='2'] .launcher-intro-title {
  font-size: clamp(2.08rem, 4vw, 3.68rem);
  line-height: 1.13;
  letter-spacing: 0.034em;
}

.launcher-intro-panel[data-intro-step='2'] .launcher-intro-text {
  font-size: clamp(0.96rem, 1.42vw, 1.14rem);
  line-height: 1.78;
}

.launcher-intro-panel[data-intro-step='2'] .launcher-intro-actions {
  gap: 12px;
}

.launcher-intro-panel[data-intro-step='2'] .launcher-intro-actions--multi .launcher-intro-continue {
  flex: 1 1 180px;
}

.launcher-intro-panel[data-intro-step='2'] .launcher-intro-continue {
  min-width: 0;
  padding: 14px 26px;
  font-size: 1rem;
  letter-spacing: 0.14em;
}

.launcher-intro-extra {
  position: relative;
  z-index: 1;
}

.launcher-intro-extra[hidden] {
  display: none !important;
}

.launcher-intro-api {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.launcher-intro-api-choice {
  align-self: flex-start;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--brand-primary) 18%, transparent);
  border: 1px solid var(--sheen-15);
  color: var(--launcher-text);
  font-size: 0.84rem;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.04em;
}

.launcher-intro-api-label {
  color: var(--launcher-text);
  font-size: 0.82rem;
  font-weight: var(--weight-bold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.launcher-intro-api-input {
  width: 100%;
  border: 1px solid var(--sheen-25);
  border-radius: var(--radius-sm);
  padding: 15px 16px;
  background: var(--overlay-30);
  color: var(--launcher-text);
  font-family: var(
    --font-ui,
    -apple-system,
    BlinkMacSystemFont,
    'PingFang SC',
    'Microsoft YaHei',
    'Segoe UI',
    sans-serif
  );
  font-size: 1rem;
  line-height: 1.4;
  transition:
    border-color 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease;
}

.launcher-intro-api-input::placeholder {
  color: var(--launcher-text-faint);
}

.launcher-intro-api-input:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--brand-primary) 88%, transparent);
  background: var(--overlay-40);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand-primary) 14%, transparent);
}

.launcher-intro-api-hint {
  color: var(--launcher-text);
  font-size: 0.94rem;
  line-height: 1.75;
}

.launcher-intro-api-status {
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  background: var(--overlay-30);
  border: 1px solid var(--sheen-15);
  color: var(--launcher-text);
  font-size: 0.94rem;
  font-weight: var(--weight-semibold);
  line-height: 1.6;
}

.launcher-intro-api-status--pending {
  border-color: color-mix(in srgb, var(--brand-primary) 35%, transparent);
  color: color-mix(in srgb, var(--brand-primary) 15%, var(--text-invert));
}

.launcher-intro-api-status--success {
  border-color: color-mix(in srgb, var(--status-success) 35%, transparent);
  color: color-mix(in srgb, var(--status-success) 12%, var(--text-invert));
}

.launcher-intro-api-status--error {
  border-color: color-mix(in srgb, var(--status-danger) 35%, transparent);
  color: color-mix(in srgb, var(--status-danger) 15%, var(--text-invert));
}

.launcher-intro-back {
  position: fixed;
  top: calc(32px + var(--safe-top, 0px));
  left: calc(40px + var(--safe-left, 0px));
  z-index: 24;
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--sheen-20);
  border-radius: var(--radius-pill);
  padding: 10px 16px 10px 12px;
  background: var(--overlay-35);
  color: var(--launcher-text);
  font-family: var(
    --font-ui,
    -apple-system,
    BlinkMacSystemFont,
    'PingFang SC',
    'Microsoft YaHei',
    'Segoe UI',
    sans-serif
  );
  font-size: 0.96rem;
  font-weight: var(--weight-bold);
  letter-spacing: 0.08em;
  cursor: pointer;
  backdrop-filter: blur(14px) saturate(118%);
  -webkit-backdrop-filter: blur(14px) saturate(118%);
  box-shadow:
    0 18px 32px -22px var(--overlay-70),
    0 1px 0 var(--sheen-12) inset;
  transition:
    transform 0.22s ease,
    border-color 0.22s ease,
    background 0.22s ease,
    box-shadow 0.22s ease,
    opacity 0.22s ease;
}

.launcher-intro-back .material-symbols-outlined {
  font-size: var(--text-display);
}

.launcher-intro-back:hover {
  transform: translateX(-4px);
  border-color: var(--launcher-text-faint);
  background: var(--overlay-50);
  box-shadow:
    0 20px 34px -22px var(--overlay-80),
    0 1px 0 var(--launcher-border-strong) inset;
}

.launcher-intro-back:focus-visible {
  outline: 2px solid var(--launcher-text);
  outline-offset: 3px;
}

.launcher-intro-back:disabled {
  cursor: wait;
  opacity: 0.7;
  transform: none;
}

.launcher-intro-back--pressed {
  animation: tilePress 0.15s ease-out forwards !important;
  transform-origin: left center;
}

.launcher-intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.launcher-intro-actions--multi {
  width: 100%;
}

.launcher-intro-continue {
  appearance: none;
  border: none;
  border-radius: var(--radius-xl);
  padding: 16px 34px;
  min-width: 180px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand-primary) 65%, var(--text-invert)) 0%, var(--brand-primary) 100%);
  color: var(--launcher-text);
  font-family: var(
    --font-ui,
    -apple-system,
    BlinkMacSystemFont,
    'PingFang SC',
    'Microsoft YaHei',
    'Segoe UI',
    sans-serif
  );
  font-size: 1.1rem;
  font-weight: var(--weight-bold);
  letter-spacing: 0.2em;
  cursor: pointer;
  box-shadow:
    inset 2px 2px 5px var(--sheen-35),
    inset -2px -2px 5px var(--overlay-15),
    0 10px 20px -6px color-mix(in srgb, var(--brand-primary) 40%, transparent);
  transition:
    transform 0.22s ease,
    background 0.22s ease,
    box-shadow 0.22s ease;
}

[data-theme='dark'] .launcher-intro-continue {
  box-shadow:
    inset 2px 2px 5px var(--sheen-15),
    inset -2px -2px 5px var(--overlay-35),
    0 10px 20px -6px var(--overlay-60);
}

.launcher-intro-actions--multi .launcher-intro-continue {
  flex: 1 1 200px;
  min-width: 0;
}

.launcher-intro-continue--secondary {
  background: color-mix(in srgb, var(--surface-page) 90%, transparent);
  color: var(--text-primary);
  box-shadow:
    inset 2px 2px 4px var(--sheen-80),
    inset -2px -2px 4px var(--overlay-5),
    0 8px 16px -6px var(--overlay-8);
}

[data-theme='dark'] .launcher-intro-continue--secondary {
  background: color-mix(in srgb, var(--surface-code-alt) 90%, transparent);
  color: var(--text-primary);
  box-shadow:
    inset 2px 2px 4px var(--sheen-6),
    inset -2px -2px 4px var(--overlay-20),
    0 8px 16px -6px var(--overlay-25);
}

.launcher-intro-continue--success {
  background: linear-gradient(135deg, color-mix(in srgb, var(--status-success) 70%, var(--text-invert)) 0%, var(--status-success) 100%);
  box-shadow:
    inset 2px 2px 4px var(--sheen-40),
    inset -2px -2px 4px var(--overlay-15),
    0 10px 20px -6px color-mix(in srgb, var(--status-success) 40%, transparent);
}

/* Custom Thematic Clay Buttons */
.launcher-intro-continue[data-action='intro-next'] {
  background: linear-gradient(135deg, color-mix(in srgb, var(--status-success) 55%, var(--text-invert)) 0%, color-mix(in srgb, var(--status-success) 80%, var(--text-invert)) 100%);
  box-shadow: inset 2px 2px 5px var(--sheen-40), inset -2px -2px 5px var(--overlay-10), 0 10px 20px -6px color-mix(in srgb, var(--status-success) 40%, transparent);
}
.launcher-intro-continue[data-action='intro-next']:hover {
  background: linear-gradient(135deg, color-mix(in srgb, var(--status-success) 48%, var(--text-invert)) 0%, color-mix(in srgb, var(--status-success) 72%, var(--text-invert)) 100%);
  box-shadow: inset 2px 2px 5px var(--sheen-50), inset -2px -2px 5px var(--overlay-8), 0 6px 14px -4px color-mix(in srgb, var(--status-success) 50%, transparent);
}
[data-theme='dark'] .launcher-intro-continue[data-action='intro-next'] {
  box-shadow: inset 2px 2px 5px var(--sheen-20), inset -2px -2px 5px var(--overlay-25), 0 10px 20px -6px color-mix(in srgb, var(--status-success) 25%, transparent);
}
[data-theme='dark'] .launcher-intro-continue[data-action='intro-next']:hover {
  box-shadow: inset 2px 2px 5px var(--sheen-25), inset -2px -2px 5px var(--overlay-20), 0 6px 14px -4px color-mix(in srgb, var(--status-success) 30%, transparent);
}

.launcher-intro-continue[data-intro-choice='1'] {
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand-yellow) 65%, var(--text-invert)) 0%, var(--brand-yellow) 100%);
  color: var(--text-primary);
  box-shadow: inset 2px 2px 5px var(--sheen-70), inset -2px -2px 5px var(--overlay-10), 0 10px 20px -6px color-mix(in srgb, var(--brand-yellow) 40%, transparent);
}
.launcher-intro-continue[data-intro-choice='1']:hover {
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand-yellow) 55%, var(--text-invert)) 0%, color-mix(in srgb, var(--brand-yellow) 85%, var(--text-invert)) 100%);
  box-shadow: inset 2px 2px 5px var(--sheen-80), inset -2px -2px 5px var(--overlay-8), 0 6px 14px -4px color-mix(in srgb, var(--brand-yellow) 50%, transparent);
}
[data-theme='dark'] .launcher-intro-continue[data-intro-choice='1'] {
  box-shadow: inset 2px 2px 5px var(--sheen-40), inset -2px -2px 5px var(--overlay-25), 0 10px 20px -6px color-mix(in srgb, var(--brand-yellow) 25%, transparent);
}
[data-theme='dark'] .launcher-intro-continue[data-intro-choice='1']:hover {
  box-shadow: inset 2px 2px 5px var(--sheen-50), inset -2px -2px 5px var(--overlay-20), 0 6px 14px -4px color-mix(in srgb, var(--brand-yellow) 30%, transparent);
}

.launcher-intro-continue[data-intro-choice='2'] {
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand-secondary) 50%, var(--text-invert)) 0%, var(--brand-secondary) 100%);
  color: var(--text-invert);
  box-shadow: inset 2px 2px 5px var(--sheen-45), inset -2px -2px 5px var(--overlay-10), 0 10px 20px -6px color-mix(in srgb, var(--brand-secondary) 40%, transparent);
}
.launcher-intro-continue[data-intro-choice='2']:hover {
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand-secondary) 40%, var(--text-invert)) 0%, color-mix(in srgb, var(--brand-secondary) 72%, var(--text-invert)) 100%);
  box-shadow: inset 2px 2px 5px var(--sheen-55), inset -2px -2px 5px var(--overlay-8), 0 6px 14px -4px color-mix(in srgb, var(--brand-secondary) 50%, transparent);
}
[data-theme='dark'] .launcher-intro-continue[data-intro-choice='2'] {
  box-shadow: inset 2px 2px 5px var(--sheen-15), inset -2px -2px 5px var(--overlay-30), 0 10px 20px -6px color-mix(in srgb, var(--brand-secondary) 25%, transparent);
}
[data-theme='dark'] .launcher-intro-continue[data-intro-choice='2']:hover {
  box-shadow: inset 2px 2px 5px var(--sheen-20), inset -2px -2px 5px var(--overlay-20), 0 6px 14px -4px color-mix(in srgb, var(--brand-secondary) 30%, transparent);
}

.launcher-intro-continue[data-intro-choice='3'] {
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand-purple) 50%, var(--text-invert)) 0%, color-mix(in srgb, var(--brand-purple) 78%, var(--text-invert)) 100%);
  box-shadow: inset 2px 2px 5px var(--sheen-40), inset -2px -2px 5px var(--overlay-15), 0 10px 20px -6px color-mix(in srgb, var(--brand-purple) 40%, transparent);
}
.launcher-intro-continue[data-intro-choice='3']:hover {
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand-purple) 40%, var(--text-invert)) 0%, color-mix(in srgb, var(--brand-purple) 65%, var(--text-invert)) 100%);
  box-shadow: inset 2px 2px 5px var(--sheen-50), inset -2px -2px 5px var(--overlay-10), 0 6px 14px -4px color-mix(in srgb, var(--brand-purple) 50%, transparent);
}
[data-theme='dark'] .launcher-intro-continue[data-intro-choice='3'] {
  box-shadow: inset 2px 2px 5px var(--sheen-15), inset -2px -2px 5px var(--overlay-35), 0 10px 20px -6px color-mix(in srgb, var(--brand-purple) 25%, transparent);
}
[data-theme='dark'] .launcher-intro-continue[data-intro-choice='3']:hover {
  box-shadow: inset 2px 2px 5px var(--sheen-20), inset -2px -2px 5px var(--overlay-30), 0 6px 14px -4px color-mix(in srgb, var(--brand-purple) 30%, transparent);
}

.launcher-intro-continue:hover {
  transform: translateY(2px);
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand-primary) 58%, var(--text-invert)) 0%, color-mix(in srgb, var(--brand-primary) 85%, var(--text-invert)) 100%);
  box-shadow:
    inset 2px 2px 5px var(--sheen-45),
    inset -2px -2px 5px var(--overlay-12),
    0 6px 14px -4px color-mix(in srgb, var(--brand-primary) 50%, transparent);
}

[data-theme='dark'] .launcher-intro-continue:hover {
  box-shadow:
    inset 2px 2px 5px var(--sheen-20),
    inset -2px -2px 5px var(--overlay-30),
    0 6px 14px -4px var(--overlay-70);
}

.launcher-intro-continue--secondary:hover {
  background: var(--launcher-text);
  box-shadow:
    inset 2px 2px 4px var(--launcher-text),
    inset -2px -2px 4px var(--overlay-2),
    0 6px 12px -4px var(--overlay-10);
}

[data-theme='dark'] .launcher-intro-continue--secondary:hover {
  background: color-mix(in srgb, var(--surface-code-alt) 95%, transparent);
  box-shadow:
    inset 2px 2px 4px var(--sheen-8),
    inset -2px -2px 4px var(--overlay-15),
    0 6px 12px -4px var(--overlay-30);
}

.launcher-intro-continue:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 4px;
}

.launcher-intro-continue:disabled {
  cursor: wait;
  opacity: 0.72;
  transform: none;
}

.launcher-intro-continue--pressed {
  animation: tilePress 0.15s ease-out forwards !important;
  transform-origin: left center;
}

.launcher-overlay.launcher--intro-active .launcher-title-area,
.launcher-overlay.launcher--intro-active .launcher-nav,
.launcher-overlay.launcher--intro-active .launcher-version,
.launcher-overlay.launcher--intro-active .launcher-profile,
.launcher-overlay.launcher--intro-active .launcher-news {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.launcher-overlay.launcher--intro-active .launcher-content {
  pointer-events: none;
}

.launcher-overlay.launcher--intro-active .launcher-intro {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.launcher-overlay.launcher--transition-lock .launcher-content,
.launcher-overlay.launcher--transition-lock .launcher-profile,
.launcher-overlay.launcher--transition-lock .launcher-news,
.launcher-overlay.launcher--transition-lock .launcher-intro,
.launcher-overlay.launcher--transition-lock .launcher-intro-actions {
  pointer-events: none !important;
}

/* --- Title Area --- */
.launcher-title-area {
  margin-top: 16px;
}

.launcher-title-cn {
  font-family: var(
    --font-ui,
    -apple-system,
    BlinkMacSystemFont,
    'PingFang SC',
    'Microsoft YaHei',
    'Segoe UI',
    sans-serif
  );
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: var(--weight-extrabold);
  color: var(--launcher-text);
  letter-spacing: 0.08em;
  text-shadow:
    0 2px 14px var(--overlay-55),
    0 0 16px var(--sheen-25);
  line-height: 1.2;
}

.launcher-title-en {
  font-size: clamp(0.75rem, 1.5vw, 1.25rem);
  font-weight: var(--weight-medium);
  color: var(--launcher-text);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-top: 4px;
  margin-left: 2px;
  text-shadow: 0 1px 8px var(--overlay-35);
}

.launcher-title-accent {
  width: 96px;
  height: 4px;
  background: var(--brand-primary);
  margin-top: 24px;
  box-shadow: 0 0 10px color-mix(in srgb, var(--brand-primary) 80%, transparent);
  border-radius: 2px;
}

/* --- Navigation Menu --- */
.launcher-nav {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  max-width: 480px;
}

.launcher-nav-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 8px;
  color: var(--launcher-text);
  font-size: 1rem;
  font-weight: var(--weight-semibold);
  cursor: pointer;
  border: none;
  background: transparent;
  text-align: left;
  position: relative;
  transition: all var(--transition-slow);
  white-space: normal;
  min-width: 0;
}

/* Left-edge highlight bar (hidden by default) */
.launcher-nav-item::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--launcher-border) 0%, transparent 100%);
  border-left: 2px solid var(--text-invert);
  transition:
    width 0.3s ease,
    opacity var(--transition-slow);
  opacity: 0;
  z-index: -1;
}

.launcher-nav-item:hover::before {
  width: 250px;
  opacity: 1;
}

.launcher-nav-item:hover {
  color: var(--text-invert);
  transform: translateX(10px);
  text-shadow: 0 0 8px var(--sheen-60);
}

.launcher-nav-item .material-symbols-outlined {
  font-size: 28px;
  width: 36px;
  text-align: center;
  color: var(--launcher-text);
  transition: color var(--transition-slow);
}

.launcher-nav-item:hover .material-symbols-outlined {
  color: var(--text-invert);
}

/* Hide icon ligature text until font loads (scoped to launcher only) */
html:not(.fonts-ready) .launcher-nav-item .material-symbols-outlined {
  visibility: hidden;
}

/* Primary nav item (first one - larger) */
.launcher-nav-item.launcher-nav--primary .launcher-nav-label-cn {
  font-family: var(
    --font-ui,
    -apple-system,
    BlinkMacSystemFont,
    'PingFang SC',
    'Microsoft YaHei',
    'Segoe UI',
    sans-serif
  );
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: var(--weight-extrabold);
  letter-spacing: 0.05em;
}

.launcher-nav-item.launcher-nav--primary .material-symbols-outlined {
  font-size: 32px;
}

/* Secondary nav items */
.launcher-nav-label {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.launcher-nav-label-cn {
  font-family: var(
    --font-ui,
    -apple-system,
    BlinkMacSystemFont,
    'PingFang SC',
    'Microsoft YaHei',
    'Segoe UI',
    sans-serif
  );
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.03em;
  color: var(--launcher-text);
  text-shadow: 0 1px 8px var(--overlay-35);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.launcher-nav-label-en {
  font-size: 0.65rem;
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--launcher-text);
  margin-top: 2px;
  transition: color var(--transition-slow);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.launcher-nav-item:hover .launcher-nav-label-en {
  color: var(--launcher-text);
}

/* Disabled state (no save) */
.launcher-nav-item.launcher-nav--disabled {
  color: var(--sheen-20);
  cursor: not-allowed;
  pointer-events: none;
}

.launcher-nav-item.launcher-nav--disabled .material-symbols-outlined {
  opacity: 0.25;
}

.launcher-nav-item.launcher-nav--disabled .launcher-nav-label-en {
  color: var(--sheen-12);
}

html[data-ui-language='en'] .launcher-title-cn,
html[data-ui-language='en'] .launcher-nav-label-cn {
  display: none;
}

html[data-ui-language='en'] .launcher-title-en {
  margin-top: 0;
  margin-left: 0;
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  letter-spacing: 0.14em;
}

html[data-ui-language='en'] .launcher-nav-label-en {
  margin-top: 0;
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  letter-spacing: 0.08em;
  color: var(--launcher-text);
}

html[data-ui-language='en'] .launcher-nav-item.launcher-nav--primary .launcher-nav-label-en {
  font-size: clamp(1.35rem, 2.3vw, 1.8rem);
  font-weight: var(--weight-bold);
}

/* --- Player Profile (top right) --- */
.launcher-profile {
  position: absolute;
  top: calc(32px + var(--safe-top, 0px));
  right: calc(40px + var(--safe-right, 0px));
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 12px;
  opacity: 0.85;
  transition: opacity var(--transition-slow);
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.launcher-profile-bubble {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: min(360px, 78vw);
  padding: 10px 12px;
  border-radius: var(--radius-xs);
  background: var(--launcher-glass);
  border: 1px solid var(--sheen-20);
  box-shadow: 0 10px 28px var(--overlay-45);
  color: var(--launcher-text);
  font-size: 0.78rem;
  line-height: 1.5;
  text-align: left;
  letter-spacing: 0.01em;
  white-space: pre-wrap;
  opacity: 0;
  transform: translateY(-6px) scale(0.98);
  transform-origin: top right;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
  pointer-events: none;
  z-index: 15;
}

.launcher-profile-bubble::before {
  content: '';
  position: absolute;
  top: -6px;
  right: 16px;
  width: 10px;
  height: 10px;
  background: var(--launcher-glass);
  border-top: 1px solid var(--sheen-20);
  border-left: 1px solid var(--sheen-20);
  transform: rotate(45deg);
}

.launcher-profile-bubble.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.launcher-profile:hover {
  opacity: 1;
}

.launcher-profile-info {
  text-align: right;
}

.launcher-profile-name {
  font-family: var(
    --font-ui,
    -apple-system,
    BlinkMacSystemFont,
    'PingFang SC',
    'Microsoft YaHei',
    'Segoe UI',
    sans-serif
  );
  color: var(--text-invert);
  font-size: 0.95rem;
  font-weight: var(--weight-bold);
  line-height: 1.2;
}

.launcher-profile-status {
  color: var(--status-success);
  font-size: 0.65rem;
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}

.launcher-profile-status-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-circle);
  background: var(--status-success);
  animation: launcher-pulse 2s ease-in-out infinite;
}

.launcher-profile-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-circle);
  background: linear-gradient(135deg, var(--text-muted), var(--text-primary));
  overflow: hidden;
  border: 2px solid var(--sheen-30);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-slow);
}

.launcher-profile:hover .launcher-profile-avatar {
  border-color: var(--text-invert);
}

.launcher-profile-avatar .material-symbols-outlined {
  font-size: 24px;
  color: var(--sheen-70);
}

/* --- News Cards (bottom right) --- */
.launcher-news {
  position: absolute;
  bottom: 40px;
  right: 40px;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 340px;
  opacity: 0.78;
  pointer-events: none;
}

.launcher-news-card {
  background: var(--overlay-40);
  backdrop-filter: blur(12px);
  border-left: 2px solid var(--brand-primary);
  padding: 16px;
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  transform: translateX(16px);
}

.launcher-news-card:nth-child(2) {
  border-left-color: var(--status-success);
  transform: translateX(32px);
}

.launcher-news-card h4 {
  font-family: var(
    --font-ui,
    -apple-system,
    BlinkMacSystemFont,
    'PingFang SC',
    'Microsoft YaHei',
    'Segoe UI',
    sans-serif
  );
  color: var(--launcher-text);
  font-size: 0.8rem;
  font-weight: var(--weight-bold);
  margin-bottom: 6px;
  text-shadow: 0 0 8px var(--overlay-50);
}

.launcher-news-card p {
  color: var(--launcher-text);
  font-size: 0.72rem;
  font-weight: var(--weight-medium);
  line-height: 1.6;
  text-shadow: 0 1px 8px var(--overlay-25);
}

/* --- Version Bar --- */
.launcher-version {
  color: var(--sheen-50);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  font-weight: var(--weight-medium);
  display: flex;
  align-items: center;
  gap: 16px;
}

.launcher-version-dot {
  width: 3px;
  height: 3px;
  border-radius: var(--radius-circle);
  background: var(--sheen-45);
}

.launcher-version-link {
  cursor: pointer;
  transition: color var(--transition-slow);
}

.launcher-version-link:hover {
  color: var(--launcher-text);
}

/* --- Credits Modal --- */
.launcher-credits-modal {
  position: fixed;
  inset: 0;
  z-index: 301;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.launcher-credits-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.launcher-credits-backdrop {
  position: absolute;
  inset: 0;
  background: var(--overlay-70);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.launcher-credits-panel {
  position: relative;
  width: min(480px, 88vw);
  max-height: 70vh;
  background: var(--launcher-glass);
  border: 1px solid var(--sheen-15);
  border-radius: var(--radius-md);
  box-shadow: 0 24px 64px var(--overlay-60);
  padding: 40px 36px 28px;
  display: flex;
  flex-direction: column;
  transform: translateY(16px) scale(0.97);
  transition: transform var(--transition-slow);
}

.launcher-credits-modal.is-open .launcher-credits-panel {
  transform: translateY(0) scale(1);
}

.launcher-credits-close {
  position: absolute;
  top: 14px;
  right: 18px;
  min-height: 36px;
  padding: 0 12px;
  font-size: var(--text-body-sm);
  font-weight: var(--weight-bold);
  line-height: 1;
}

.launcher-credits-close:hover {
  color: var(--text-invert);
}

.launcher-credits-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-edge);
  background: color-mix(in srgb, var(--surface-glass-strong) 92%, transparent);
  color: var(--text-invert);
  text-decoration: none;
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.3px;
  transition:
    transform var(--transition-base),
    background var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
  box-shadow: var(--shadow-sm), var(--shadow-inset);
}

.launcher-credits-link-btn:hover {
  transform: translateY(-1px);
  background: color-mix(in srgb, var(--surface-glass-strong) 98%, transparent);
  border-color: var(--accent-border);
  box-shadow: var(--shadow-md), var(--shadow-inset);
}

.launcher-credits-link-icon {
  font-size: var(--text-display);
}

.launcher-credits-title {
  font-size: 0.85rem;
  font-weight: var(--weight-bold);
  letter-spacing: 0.35em;
  color: var(--launcher-text);
  margin: 0;
}

.launcher-credits-divider {
  width: 48px;
  height: 3px;
  background: var(--brand-primary);
  border-radius: 2px;
  margin: 12px 0 20px;
  box-shadow: 0 0 8px color-mix(in srgb, var(--brand-primary) 60%, transparent);
}

.launcher-changelog-divider {
  background: var(--status-success);
  box-shadow: 0 0 8px color-mix(in srgb, var(--status-success) 60%, transparent);
}

.launcher-credits-body {
  flex: 1;
  overflow-y: auto;
  padding-right: 8px;
}

.launcher-credits-section {
  margin-bottom: 20px;
}

.launcher-credits-section h3 {
  font-size: 0.7rem;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sheen-45);
  margin: 0 0 6px;
}

.launcher-credits-section p {
  font-size: 0.85rem;
  color: var(--launcher-text);
  line-height: 1.7;
  margin: 0;
}

.launcher-credits-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.launcher-credits-section li {
  font-size: 0.82rem;
  color: var(--launcher-text);
  line-height: 1.8;
}

.launcher-credits-section li strong {
  color: var(--launcher-text);
  font-weight: var(--weight-semibold);
}

.launcher-credits-footer {
  text-align: center;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--sheen-30);
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--sheen-8);
}

@media (max-width: 480px) {
  .launcher-credits-panel {
    padding: 32px 24px 20px;
    border-radius: var(--radius-sm);
  }
}

/* --- Animations --- */
@keyframes launcher-pulse {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.4;
  }
}

@keyframes launcherFadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.launcher-overlay {
  animation: launcherFadeIn 0.8s ease forwards;
}

/* Nav items stagger in */
@keyframes launcherSlideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.launcher-nav-item {
  opacity: 0;
  animation: launcherSlideIn 0.4s ease forwards;
}

.launcher-nav-item:nth-child(1) {
  animation-delay: 0.3s;
}

.launcher-nav-item:nth-child(2) {
  animation-delay: 0.4s;
}

.launcher-nav-item:nth-child(3) {
  animation-delay: 0.5s;
}

.launcher-nav-item:nth-child(4) {
  animation-delay: 0.6s;
}

.launcher-nav-item:nth-child(5) {
  animation-delay: 0.7s;
}

/* ============================================
   Windows Phone Turnstile Exit Animation
   ============================================ */

/* Phase 1: Clicked tile press feedback */
@keyframes tilePress {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(0.93) rotateY(-8deg);
  }

  100% {
    transform: scale(0.93) rotateY(-8deg);
  }
}

.launcher-nav-item--pressed {
  animation: tilePress 0.15s ease-out forwards !important;
  transform-origin: left center;
}

/* Phase 2: Turnstile rotation out for individual elements */
@keyframes turnstileOut {
  0% {
    transform: rotateY(0deg);
    opacity: 1;
  }

  100% {
    transform: rotateY(-90deg);
    opacity: 0;
  }
}

@keyframes turnstileIn {
  0% {
    transform: rotateY(90deg);
    opacity: 0;
  }

  100% {
    transform: rotateY(0deg);
    opacity: 1;
  }
}

/* Phase 3: Background and overlay fade out */
@keyframes turnstileBgOut {
  0% {
    opacity: 1;
  }

  100% {
    opacity: 0;
  }
}

/* Turnstile rotation for launcher content transitions */
.launcher--transition-to-intro .launcher-title-area,
.launcher--transition-to-intro .launcher-nav-item,
.launcher--transition-to-intro .launcher-profile,
.launcher--transition-to-intro .launcher-news,
.launcher--transition-to-intro .launcher-version,
.launcher--turnstile-exit .launcher-title-area,
.launcher--turnstile-exit .launcher-nav-item,
.launcher--turnstile-exit .launcher-profile,
.launcher--turnstile-exit .launcher-news,
.launcher--turnstile-exit .launcher-version,
.launcher--turnstile-exit .launcher-intro-panel {
  animation: turnstileOut 0.35s cubic-bezier(0.4, 0, 0.8, 0.3) forwards !important;
  transform-origin: left center;
}

.launcher--transition-from-intro .launcher-title-area,
.launcher--transition-from-intro .launcher-nav-item,
.launcher--transition-from-intro .launcher-profile,
.launcher--transition-from-intro .launcher-news,
.launcher--transition-from-intro .launcher-version {
  animation: turnstileIn 0.35s cubic-bezier(0.4, 0, 0.8, 0.3) forwards !important;
  transform-origin: left center;
}

/* Stagger: title first, then nav items top-to-bottom, then peripherals */
.launcher--transition-to-intro .launcher-title-area,
.launcher--transition-from-intro .launcher-title-area,
.launcher--turnstile-exit .launcher-title-area {
  animation-delay: 0ms !important;
}

.launcher--transition-to-intro .launcher-nav-item:nth-child(1),
.launcher--transition-from-intro .launcher-nav-item:nth-child(1),
.launcher--turnstile-exit .launcher-nav-item:nth-child(1) {
  animation-delay: 30ms !important;
}

.launcher--transition-to-intro .launcher-nav-item:nth-child(2),
.launcher--transition-from-intro .launcher-nav-item:nth-child(2),
.launcher--turnstile-exit .launcher-nav-item:nth-child(2) {
  animation-delay: 60ms !important;
}

.launcher--transition-to-intro .launcher-nav-item:nth-child(3),
.launcher--transition-from-intro .launcher-nav-item:nth-child(3),
.launcher--turnstile-exit .launcher-nav-item:nth-child(3) {
  animation-delay: 90ms !important;
}

.launcher--transition-to-intro .launcher-nav-item:nth-child(4),
.launcher--transition-from-intro .launcher-nav-item:nth-child(4),
.launcher--turnstile-exit .launcher-nav-item:nth-child(4) {
  animation-delay: 120ms !important;
}

.launcher--transition-to-intro .launcher-nav-item:nth-child(5),
.launcher--transition-from-intro .launcher-nav-item:nth-child(5),
.launcher--turnstile-exit .launcher-nav-item:nth-child(5) {
  animation-delay: 150ms !important;
}

.launcher--transition-to-intro .launcher-version,
.launcher--transition-from-intro .launcher-version,
.launcher--turnstile-exit .launcher-version {
  animation-delay: 180ms !important;
}

.launcher--transition-to-intro .launcher-profile,
.launcher--transition-from-intro .launcher-profile,
.launcher--turnstile-exit .launcher-profile {
  animation-delay: 40ms !important;
}

.launcher--transition-to-intro .launcher-news,
.launcher--transition-from-intro .launcher-news,
.launcher--turnstile-exit .launcher-news {
  animation-delay: 80ms !important;
}

.launcher--intro-step-exit .launcher-intro-panel {
  animation: turnstileOut 0.35s cubic-bezier(0.4, 0, 0.8, 0.3) forwards !important;
  transform-origin: left center;
}

.launcher--intro-enter .launcher-intro-panel {
  animation: turnstileIn 0.35s cubic-bezier(0.4, 0, 0.8, 0.3) forwards !important;
  transform-origin: left center;
}

/* Background layers fade out after the content has rotated */
.launcher--turnstile-exit .launcher-bg,
.launcher--turnstile-exit::after {
  animation: turnstileBgOut 0.3s ease 0.35s forwards;
}

/* --- Desktop Scaling (keep mobile styles unchanged) --- */
@media (min-width: 769px) {
  .launcher-content {
    padding: calc((48px * var(--launcher-desktop-scale, 1)) + var(--safe-top, 0px))
      calc((64px * var(--launcher-desktop-scale, 1)) + var(--safe-right, 0px))
      calc((48px * var(--launcher-desktop-scale, 1)) + var(--safe-bottom, 0px))
      calc((64px * var(--launcher-desktop-scale, 1)) + var(--safe-left, 0px));
    max-width: min(var(--launcher-content-max-width, 2200px), 96vw);
  }

  .launcher-intro {
    padding: calc((48px * var(--launcher-desktop-scale, 1)) + var(--safe-top, 0px))
      calc((64px * var(--launcher-desktop-scale, 1)) + var(--safe-right, 0px))
      calc((48px * var(--launcher-desktop-scale, 1)) + var(--safe-bottom, 0px))
      calc((64px * var(--launcher-desktop-scale, 1)) + var(--safe-left, 0px));
  }

  .launcher-intro-stage {
    padding-top: calc(84px * var(--launcher-desktop-scale, 1));
  }

  .launcher-intro-panel {
    width: min(calc(880px * var(--launcher-desktop-scale, 1)), 100%);
    gap: calc(24px * var(--launcher-desktop-scale, 1));
  }

  .launcher-intro-back {
    top: calc((32px * var(--launcher-desktop-scale, 1)) + var(--safe-top, 0px));
    left: calc((40px * var(--launcher-desktop-scale, 1)) + var(--safe-left, 0px));
    gap: calc(10px * var(--launcher-desktop-scale, 1));
    padding: calc(10px * var(--launcher-desktop-scale, 1))
      calc(16px * var(--launcher-desktop-scale, 1)) calc(10px * var(--launcher-desktop-scale, 1))
      calc(12px * var(--launcher-desktop-scale, 1));
    font-size: calc(0.96rem * var(--launcher-desktop-scale, 1));
  }

  .launcher-intro-back .material-symbols-outlined {
    font-size: calc(20px * var(--launcher-desktop-scale, 1));
  }

  .launcher-intro-copy {
    gap: calc(24px * var(--launcher-desktop-scale, 1));
    padding: calc(36px * var(--launcher-desktop-scale, 1))
      calc(30px * var(--launcher-desktop-scale, 1)) calc(30px * var(--launcher-desktop-scale, 1));
    border-radius: calc(30px * var(--launcher-desktop-scale, 1));
  }

  .launcher-intro-title {
    max-width: 100%;
    font-size: calc(clamp(2.6rem, 5vw, 4.6rem) * var(--launcher-desktop-scale, 1));
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-title {
    max-width: min(calc(960px * var(--launcher-desktop-scale, 1)), 100%);
    font-size: calc(clamp(2.1rem, 3.8vw, 3.2rem) * var(--launcher-desktop-scale, 1));
  }

  .launcher-intro-panel[data-intro-step='2'] {
    gap: 18px;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-copy {
    gap: 20px;
    padding: 30px 28px 24px;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-title {
    max-width: 100%;
    font-size: calc(clamp(2.08rem, 4vw, 3.68rem) * var(--launcher-desktop-scale, 1));
    line-height: 1.11;
    letter-spacing: 0.032em;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-text {
    font-size: clamp(0.98rem, 1.12vw, 1.15rem);
    line-height: 1.76;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-actions {
    gap: 12px;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-continue {
    min-width: 0;
    padding: 14px 24px;
    font-size: clamp(0.96rem, 0.92vw, 1.04rem);
    letter-spacing: 0.14em;
  }

  .launcher-intro-panel[data-intro-step='2']
    .launcher-intro-actions--multi
    .launcher-intro-continue {
    flex: 1 1 176px;
  }

  .launcher-intro-text {
    font-size: calc(clamp(1.05rem, 1.7vw, 1.34rem) * var(--launcher-desktop-scale, 1));
  }

  .launcher-intro-continue {
    min-width: calc(180px * var(--launcher-desktop-scale, 1));
    padding: calc(16px * var(--launcher-desktop-scale, 1))
      calc(34px * var(--launcher-desktop-scale, 1));
    border-radius: calc(14px * var(--launcher-desktop-scale, 1));
    font-size: calc(1.1rem * var(--launcher-desktop-scale, 1));
  }

  .launcher-intro-api-choice {
    font-size: calc(0.84rem * var(--launcher-desktop-scale, 1));
  }

  .launcher-intro-api-label {
    font-size: calc(0.82rem * var(--launcher-desktop-scale, 1));
  }

  .launcher-intro-api-input,
  .launcher-intro-api-hint,
  .launcher-intro-api-status {
    font-size: calc(1rem * var(--launcher-desktop-scale, 1));
  }

  .launcher-title-area {
    margin-top: calc(16px * var(--launcher-desktop-scale, 1));
  }

  .launcher-title-cn {
    font-size: calc(clamp(2.5rem, 5vw, 4.5rem) * var(--launcher-desktop-scale, 1));
  }

  .launcher-title-en {
    font-size: calc(clamp(0.75rem, 1.5vw, 1.25rem) * var(--launcher-desktop-scale, 1));
    letter-spacing: calc(0.3em * var(--launcher-desktop-scale, 1));
    margin-top: calc(4px * var(--launcher-desktop-scale, 1));
    margin-left: calc(2px * var(--launcher-desktop-scale, 1));
  }

  .launcher-title-accent {
    width: calc(96px * var(--launcher-desktop-scale, 1));
    height: calc(4px * var(--launcher-desktop-scale, 1));
    margin-top: calc(24px * var(--launcher-desktop-scale, 1));
    border-radius: calc(2px * var(--launcher-desktop-scale, 1));
  }

  .launcher-nav {
    gap: calc(4px * var(--launcher-desktop-scale, 1));
    max-width: min(var(--launcher-nav-max-width, 960px), 100%);
    max-height: min(calc(560px * var(--launcher-desktop-scale, 1)), 78vh);
    overflow-y: auto;
    overflow-x: hidden;
  }

  .launcher-nav-item {
    gap: calc(24px * var(--launcher-desktop-scale, 1));
    padding: calc(16px * var(--launcher-desktop-scale, 1))
      calc(8px * var(--launcher-desktop-scale, 1));
    min-height: calc(80px * var(--launcher-desktop-scale, 1));
  }

  .launcher-nav-item::before {
    left: calc(-20px * var(--launcher-desktop-scale, 1));
    border-left-width: calc(2px * var(--launcher-desktop-scale, 1));
  }

  .launcher-nav-item:hover::before {
    width: calc(250px * var(--launcher-desktop-scale, 1));
  }

  .launcher-nav-item:hover {
    transform: translateX(calc(10px * var(--launcher-desktop-scale, 1)));
  }

  .launcher-nav-item .material-symbols-outlined {
    font-size: calc(28px * var(--launcher-desktop-scale, 1));
    width: calc(36px * var(--launcher-desktop-scale, 1));
  }

  .launcher-nav-item.launcher-nav--primary .launcher-nav-label-cn {
    font-size: calc(clamp(1.5rem, 2.5vw, 2rem) * var(--launcher-desktop-scale, 1));
  }

  .launcher-nav-item.launcher-nav--primary .material-symbols-outlined {
    font-size: calc(32px * var(--launcher-desktop-scale, 1));
  }

  .launcher-nav-label-cn {
    font-size: calc(clamp(1.2rem, 2vw, 1.6rem) * var(--launcher-desktop-scale, 1));
  }

  .launcher-nav-label-en {
    font-size: calc(0.65rem * var(--launcher-desktop-scale, 1));
    letter-spacing: calc(0.2em * var(--launcher-desktop-scale, 1));
    margin-top: calc(2px * var(--launcher-desktop-scale, 1));
  }

  .launcher-profile {
    top: calc((32px * var(--launcher-desktop-scale, 1)) + var(--safe-top, 0px));
    right: calc((40px * var(--launcher-desktop-scale, 1)) + var(--safe-right, 0px));
    gap: calc(12px * var(--launcher-desktop-scale, 1));
  }

  .launcher-profile-bubble {
    top: calc(100% + (10px * var(--launcher-desktop-scale, 1)));
    width: min(calc(360px * var(--launcher-desktop-scale, 1)), 78vw);
    padding: calc(10px * var(--launcher-desktop-scale, 1))
      calc(12px * var(--launcher-desktop-scale, 1));
    border-radius: calc(10px * var(--launcher-desktop-scale, 1));
    font-size: calc(0.78rem * var(--launcher-desktop-scale, 1));
  }

  .launcher-profile-bubble::before {
    top: calc(-6px * var(--launcher-desktop-scale, 1));
    right: calc(16px * var(--launcher-desktop-scale, 1));
    width: calc(10px * var(--launcher-desktop-scale, 1));
    height: calc(10px * var(--launcher-desktop-scale, 1));
  }

  .launcher-profile-name {
    font-size: calc(0.95rem * var(--launcher-desktop-scale, 1));
  }

  .launcher-profile-status {
    font-size: calc(0.65rem * var(--launcher-desktop-scale, 1));
    gap: calc(4px * var(--launcher-desktop-scale, 1));
  }

  .launcher-profile-status-dot {
    width: calc(6px * var(--launcher-desktop-scale, 1));
    height: calc(6px * var(--launcher-desktop-scale, 1));
  }

  .launcher-profile-avatar {
    width: calc(48px * var(--launcher-desktop-scale, 1));
    height: calc(48px * var(--launcher-desktop-scale, 1));
    border-width: calc(2px * var(--launcher-desktop-scale, 1));
  }

  .launcher-profile-avatar .material-symbols-outlined {
    font-size: calc(24px * var(--launcher-desktop-scale, 1));
  }

  .launcher-news {
    bottom: calc((40px * var(--launcher-desktop-scale, 1)) + var(--safe-bottom, 0px));
    right: calc((40px * var(--launcher-desktop-scale, 1)) + var(--safe-right, 0px));
    gap: calc(16px * var(--launcher-desktop-scale, 1));
    max-width: calc(340px * var(--launcher-desktop-scale, 1));
  }

  .launcher-news-card {
    border-left-width: calc(2px * var(--launcher-desktop-scale, 1));
    padding: calc(16px * var(--launcher-desktop-scale, 1));
    border-radius: 0 calc(8px * var(--launcher-desktop-scale, 1))
      calc(8px * var(--launcher-desktop-scale, 1)) 0;
    transform: translateX(calc(16px * var(--launcher-desktop-scale, 1)));
  }

  .launcher-news-card:nth-child(2) {
    transform: translateX(calc(32px * var(--launcher-desktop-scale, 1)));
  }

  .launcher-news-card h4 {
    font-size: calc(0.8rem * var(--launcher-desktop-scale, 1));
    margin-bottom: calc(6px * var(--launcher-desktop-scale, 1));
  }

  .launcher-news-card p {
    font-size: calc(0.72rem * var(--launcher-desktop-scale, 1));
  }

  .launcher-version {
    font-size: calc(0.65rem * var(--launcher-desktop-scale, 1));
    gap: calc(16px * var(--launcher-desktop-scale, 1));
    letter-spacing: calc(0.15em * var(--launcher-desktop-scale, 1));
  }

  .launcher-version-dot {
    width: calc(3px * var(--launcher-desktop-scale, 1));
    height: calc(3px * var(--launcher-desktop-scale, 1));
  }
}

/* --- Mobile / Responsive --- */

@media (max-width: 1150px) {
  .launcher-intro.launcher-intro--api-preview .launcher-intro-stage {
    width: min(760px, 100%);
    min-height: auto;
    padding-top: 0;
    padding-right: 0;
  }

  .launcher-intro.launcher-intro--api-preview .launcher-intro-panel {
    width: 100%;
    margin-top: 0;
  }

  .launcher-ui-preview-header {
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    flex-direction: column;
    align-items: stretch;
  }

  .launcher-ui-preview-title-group {
    gap: 10px;
  }

  .launcher-ui-preview-title-wrap {
    gap: 10px;
  }

  .launcher-ui-preview-logo {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-xs);
  }

  .launcher-ui-preview-title {
    font-size: 1.02rem;
  }

  .launcher-ui-preview-subtitle {
    font-size: 0.64rem;
    letter-spacing: 0.22em;
  }

  .launcher-ui-preview-mode-toggle {
    height: 28px;
    border-radius: var(--radius-xs);
  }

  .launcher-ui-preview-mode-label {
    min-width: 74px;
    padding: 0 10px;
    font-size: 0.72rem;
    line-height: 24px;
  }

  .launcher-ui-preview-mode-slider {
    border-radius: var(--radius-2xs);
  }

  .launcher-ui-preview-toolbar {
    width: 100%;
    justify-content: space-around;
    gap: 0;
  }

  .launcher-ui-preview-tile.header-tile {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
  }

  .launcher-ui-preview-tile.header-tile .material-symbols-outlined {
    font-size: 28px;
    margin-bottom: 2px;
  }

  .launcher-ui-preview-tile.header-tile > span:not(.material-symbols-outlined):not(.header-badge) {
    font-size: var(--text-xs);
  }

  .launcher-ui-preview-sidebar {
    display: none;
  }
}

/* Tablet & small laptops */
@media (max-width: 768px) {
  .launcher-content {
    padding: calc(24px + var(--safe-top, 0px)) calc(20px + var(--safe-right, 0px))
      calc(16px + var(--safe-bottom, 0px)) calc(20px + var(--safe-left, 0px));
  }

  .launcher-intro {
    justify-content: flex-start;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    padding: calc(24px + var(--safe-top, 0px)) calc(20px + var(--safe-right, 0px))
      calc(16px + var(--safe-bottom, 0px)) calc(20px + var(--safe-left, 0px));
  }

  .launcher-intro[data-intro-step='1'] {
    align-items: center;
  }

  .launcher-intro[data-intro-step='2'],
  .launcher-intro[data-intro-step='3'] {
    align-items: flex-start;
  }

  .launcher-intro-stage {
    width: 100%;
    min-height: max-content;
    padding-top: 72px;
  }

  .launcher-intro-panel {
    width: min(620px, 100%);
    gap: 22px;
    padding-bottom: 12px;
  }

  .launcher-intro.launcher-intro--api-preview .launcher-intro-stage {
    width: 100%;
    padding-top: 0;
  }

  .launcher-intro-back {
    top: calc(24px + var(--safe-top, 0px));
    left: calc(20px + var(--safe-left, 0px));
    padding: 10px 15px 10px 11px;
    font-size: 0.9rem;
  }

  .launcher-intro-back .material-symbols-outlined {
    font-size: var(--text-heading);
  }

  .launcher-intro-copy {
    gap: 22px;
    padding: 30px 24px 26px;
    border-radius: 26px;
    backdrop-filter: blur(18px) saturate(114%);
    -webkit-backdrop-filter: blur(18px) saturate(114%);
  }

  .launcher-intro-title {
    font-size: clamp(2.3rem, 7.6vw, 3.3rem);
    max-width: 10ch;
    line-height: 1.18;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-title {
    max-width: none;
    font-size: clamp(1.95rem, 5.4vw, 2.55rem);
  }

  .launcher-intro-panel[data-intro-step='2'] {
    gap: 18px;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-copy {
    gap: 18px;
    padding: 26px 22px 22px;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-title {
    font-size: clamp(1.84rem, 6.08vw, 2.64rem);
    line-height: 1.15;
    letter-spacing: 0.032em;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-text {
    font-size: 1.02rem;
    line-height: 1.82;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-actions--multi {
    gap: 10px;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-continue {
    padding: 14px 24px;
    font-size: 0.96rem;
    letter-spacing: 0.14em;
  }

  .launcher-intro-text {
    font-size: 1.08rem;
    line-height: 1.92;
  }

  .launcher-intro-actions--multi {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .launcher-intro-actions--multi .launcher-intro-continue {
    flex: none;
  }

  .launcher-intro-continue {
    width: 100%;
    min-width: 0;
    padding: 15px 28px;
    font-size: 1rem;
    letter-spacing: 0.16em;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-actions {
    gap: 10px;
  }

  .launcher-intro-panel[data-intro-step='2']
    .launcher-intro-actions--multi
    .launcher-intro-continue {
    flex: none;
    min-height: 60px;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-continue {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60px;
    padding: 14px 20px;
    font-size: 0.94rem;
    line-height: 1.24;
    letter-spacing: 0.1em;
  }

  .launcher-profile {
    top: calc(20px + var(--safe-top, 0px));
    right: calc(20px + var(--safe-right, 0px));
  }

  .launcher-profile-name {
    font-size: 0.8rem;
  }

  .launcher-profile-avatar {
    width: 36px;
    height: 36px;
  }

  .launcher-news {
    display: none;
  }

  .launcher-nav-item {
    padding: 16px 6px;
    gap: 20px;
    width: 100%;
    align-items: flex-start;
    border: 1px solid var(--sheen-30);
    border-radius: var(--radius-sm);
    background: var(--overlay-25);
    box-shadow:
      0 8px 18px -10px var(--overlay-55),
      0 1px 0 var(--sheen-15) inset;
  }

  .launcher-nav-item::before {
    display: none;
  }

  .launcher-nav-item.launcher-nav--primary {
    border-color: color-mix(in srgb, var(--brand-primary) 60%, transparent);
    box-shadow:
      0 10px 20px -10px var(--overlay-60),
      0 0 0 1px color-mix(in srgb, var(--brand-primary) 22%, transparent) inset;
  }

  .launcher-nav-item .material-symbols-outlined {
    font-size: 26px;
    width: 36px;
  }

  .launcher-nav-item.launcher-nav--primary .launcher-nav-label-cn {
    font-size: 1.7rem;
  }

  .launcher-nav-label-cn {
    font-size: 1.45rem;
    line-height: 1.15;
  }

  .launcher-nav-label-en {
    font-size: 0.78rem;
    letter-spacing: 0.14em;
  }

  /* Stronger gradient for text readability on narrower screens */
  .launcher-bg-gradient {
    background: linear-gradient(
      to right,
      var(--overlay-90) 0%,
      var(--overlay-55) 60%,
      var(--overlay-30) 100%
    );
  }
}

/* Small phones (iPhone 15, Pixel, etc.) */
@media (max-width: 480px) {
  .launcher-content {
    padding: calc(20px + var(--safe-top, 0px)) calc(16px + var(--safe-right, 0px))
      calc(12px + var(--safe-bottom, 0px)) calc(16px + var(--safe-left, 0px));
  }

  .launcher-intro {
    justify-content: flex-start;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    padding: calc(20px + var(--safe-top, 0px)) calc(16px + var(--safe-right, 0px))
      calc(12px + var(--safe-bottom, 0px)) calc(16px + var(--safe-left, 0px));
  }

  .launcher-intro[data-intro-step='1'] {
    align-items: center;
  }

  .launcher-intro[data-intro-step='2'],
  .launcher-intro[data-intro-step='3'] {
    align-items: flex-start;
  }

  .launcher-intro-stage {
    width: 100%;
    min-height: max-content;
    padding-top: 64px;
  }

  .launcher-intro-panel {
    width: 100%;
    gap: 20px;
    padding-bottom: 14px;
  }

  .launcher-intro.launcher-intro--api-preview .launcher-intro-stage {
    padding-top: 0;
  }

  .launcher-intro-back {
    top: calc(20px + var(--safe-top, 0px));
    left: calc(16px + var(--safe-left, 0px));
    gap: 8px;
    padding: 9px 13px 9px 10px;
    font-size: 0.86rem;
    letter-spacing: 0.06em;
  }

  .launcher-intro-back .material-symbols-outlined {
    font-size: 17px;
  }

  .launcher-ui-preview-header {
    padding: 10px 10px 9px;
    border-radius: var(--radius-md);
  }

  .launcher-ui-preview-title {
    font-size: 0.95rem;
  }

  .launcher-ui-preview-subtitle {
    font-size: 0.58rem;
  }

  .launcher-ui-preview-mode-label {
    min-width: 68px;
    font-size: 0.68rem;
  }

  .launcher-ui-preview-tile.header-tile {
    width: 56px;
    height: 56px;
  }

  .launcher-intro-copy {
    gap: 20px;
    padding: 26px 20px 22px;
    border-radius: var(--radius-xl);
    backdrop-filter: blur(16px) saturate(112%);
    -webkit-backdrop-filter: blur(16px) saturate(112%);
  }

  .launcher-intro-title {
    max-width: none;
    font-size: 2.18rem;
    letter-spacing: 0.04em;
    line-height: 1.22;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-title {
    font-size: 1.72rem;
    letter-spacing: 0.03em;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-copy {
    gap: 18px;
    padding: 24px 18px 20px;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-title {
    font-size: 1.74rem;
    line-height: 1.15;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-text {
    font-size: 0.98rem;
    line-height: 1.78;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-actions--multi {
    gap: 10px;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-continue {
    padding: 13px 18px;
    font-size: 0.94rem;
    letter-spacing: 0.12em;
  }

  .launcher-intro-text {
    font-size: 1.06rem;
    line-height: 1.9;
  }

  .launcher-intro-actions {
    width: 100%;
  }

  .launcher-intro-actions--multi {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .launcher-intro-actions--multi .launcher-intro-continue {
    flex: none;
  }

  .launcher-intro-continue {
    width: 100%;
    min-width: 0;
    padding: 14px 20px;
    letter-spacing: 0.14em;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-actions {
    gap: 10px;
  }

  .launcher-intro-panel[data-intro-step='2']
    .launcher-intro-actions--multi
    .launcher-intro-continue {
    flex: none;
    min-height: 58px;
  }

  .launcher-intro-panel[data-intro-step='2'] .launcher-intro-continue {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 58px;
    padding: 13px 16px;
    font-size: 0.92rem;
    line-height: 1.22;
    letter-spacing: 0.09em;
  }

  .launcher-title-cn {
    font-size: 2rem;
  }

  .launcher-title-en {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
  }

  .launcher-title-accent {
    width: 60px;
    height: 3px;
    margin-top: 16px;
  }

  .launcher-nav-item {
    padding: 14px 2px;
    gap: 16px;
    align-items: flex-start;
    border-radius: var(--radius-sm);
    border-color: var(--sheen-35);
    background: var(--overlay-30);
    box-shadow:
      0 9px 18px -10px var(--overlay-60),
      0 1px 0 var(--launcher-border-strong) inset;
  }

  .launcher-nav-item.launcher-nav--primary {
    border-color: color-mix(in srgb, var(--brand-primary) 65%, transparent);
    box-shadow:
      0 10px 20px -10px var(--overlay-60),
      0 0 0 1px color-mix(in srgb, var(--brand-primary) 24%, transparent) inset;
  }

  .launcher-nav-item .material-symbols-outlined {
    font-size: 24px;
    width: 32px;
  }

  .launcher-nav-item.launcher-nav--primary .launcher-nav-label-cn {
    font-size: 1.8rem;
  }

  .launcher-nav-item.launcher-nav--primary .material-symbols-outlined {
    font-size: 28px;
  }

  .launcher-nav-label-cn {
    font-size: 1.5rem;
    line-height: 1.15;
  }

  .launcher-nav-label-en {
    font-size: 0.74rem;
    letter-spacing: 0.14em;
  }

  /* Profile: hide name, show only avatar */
  .launcher-profile {
    top: calc(16px + var(--safe-top, 0px));
    right: calc(16px + var(--safe-right, 0px));
  }

  .launcher-profile-info {
    display: none;
  }

  .launcher-profile-avatar {
    width: 32px;
    height: 32px;
  }

  .launcher-profile-avatar .material-symbols-outlined {
    font-size: var(--text-heading);
  }

  /* Version bar */
  .launcher-version {
    font-size: 0.5rem;
    gap: 10px;
    letter-spacing: 0.1em;
  }

  /* Even stronger gradient on small screens */
  .launcher-bg-gradient {
    background: linear-gradient(
      to right,
      var(--overlay-90) 0%,
      var(--overlay-60) 55%,
      var(--overlay-35) 100%
    );
  }

  /* Nav hover bar: reduce overshoot */
  .launcher-nav-item::before {
    left: -12px;
  }

  .launcher-nav-item:hover::before {
    width: 150px;
  }

  .launcher-nav-item:hover {
    transform: translateX(6px);
  }

  /* 触控设备最小点击区域 */
  .launcher-nav-item {
    min-height: 62px;
  }
}

/* 触控设备禁用 hover 移动动画 */
@media (hover: none) {
  .launcher-nav-item:hover {
    transform: none;
  }

  .launcher-intro-continue:hover {
    transform: none;
  }

  .launcher-nav-item:hover::before {
    width: 0;
    opacity: 0;
  }

  .launcher-nav-item:active {
    opacity: 1;
    transform: translateY(1px);
    box-shadow:
      0 4px 10px -8px var(--overlay-60),
      0 1px 0 var(--launcher-border) inset;
  }
}

@media (prefers-reduced-motion: reduce) {
  .launcher-ui-preview-header,
  .launcher-ui-preview-summary,
  .launcher-ui-preview-npc {
    transform: none !important;
    filter: none !important;
    transition: opacity var(--transition-base) !important;
  }
}