/**
 * Xisa 配色主题 — 对齐三套图标（black / white / gray）
 * 点「Xisa」循环；--black/--white 作底色/前景角色名（白主题时对调）。
 * 字体与 XIRE / XIVO 一致且本地托管：LXGW WenKai + JetBrains Mono（`app/ui/vendor/`，无 CDN）。
 * 四语切换布局对齐 XIRE/XIVO；本项目审美差异：直角矩形（无圆角）。
 */

:root {
  --font-sans: "LXGW WenKai", "PingFang SC", "Microsoft YaHei UI", system-ui, sans-serif;
  --font-caption: "LXGW WenKai", "PingFang SC", "Songti SC", "STKaiti", serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

:root,
[data-xisa-theme="black"] {
  --black: #0a0a0a;
  --white: #f5f5f5;
  --gray: #8a8a8a;
  --gray-deep: #2e2e2e;
  --line: #1f1f1f;
  --bg: var(--black);
  --fg: var(--white);
  --muted: var(--gray);
  --glow-a: #1a1a1a;
  --glow-b: #141414;
  --surface: #111111;
  --bar-bg: color-mix(in srgb, var(--black) 92%, transparent);
  --overlay: color-mix(in srgb, #000000 94%, transparent);
  --meta-fade: rgba(0, 0, 0, 0.75);
  --caption-shadow: rgba(0, 0, 0, 0.7);
}

[data-xisa-theme="white"] {
  --black: #f5f5f5;
  --white: #0a0a0a;
  --gray: #6b6b6b;
  --gray-deep: #2e2e2e;
  --line: #c8c8c8;
  --bg: var(--black);
  --fg: var(--white);
  --muted: var(--gray);
  --glow-a: #ebebeb;
  --glow-b: #e4e4e4;
  --surface: #ffffff;
  --bar-bg: color-mix(in srgb, var(--black) 92%, transparent);
  --overlay: color-mix(in srgb, #f5f5f5 94%, transparent);
  --meta-fade: rgba(245, 245, 245, 0.82);
  --caption-shadow: rgba(255, 255, 255, 0.55);
}

[data-xisa-theme="gray"] {
  --black: #2e2e2e;
  --white: #f5f5f5;
  --gray: #8a8a8a;
  --gray-deep: #2e2e2e;
  --line: #3f3f3f;
  --bg: var(--black);
  --fg: var(--white);
  --muted: var(--gray);
  --glow-a: #3a3a3a;
  --glow-b: #353535;
  --surface: #252525;
  --bar-bg: color-mix(in srgb, var(--black) 92%, transparent);
  --overlay: color-mix(in srgb, #1a1a1a 94%, transparent);
  --meta-fade: rgba(0, 0, 0, 0.72);
  --caption-shadow: rgba(0, 0, 0, 0.7);
}

html, body {
  font-family: var(--font-sans);
}

code, kbd, pre, samp {
  font-family: var(--font-mono);
}

/* 点 UI：品牌字可点，外观仍是字标（字标用 Mono，对齐 XIVO） */
#xisa-theme-btn {
  border: 0;
  background: transparent;
  padding: 0;
  margin: 0;
  color: inherit;
  font-family: var(--font-mono);
  font-size: inherit;
  font-weight: 600;
  letter-spacing: inherit;
  text-transform: inherit;
  line-height: inherit;
  cursor: pointer;
  box-shadow: none;
  outline: none;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

#xisa-theme-btn:hover,
#xisa-theme-btn:focus-visible {
  opacity: 0.85;
  border-color: transparent;
  background: transparent;
}

#xisa-theme-btn:focus {
  outline: none;
}

#xisa-theme-btn img {
  width: 24px;
  height: 24px;
  display: block;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.75rem 1rem;
  flex-wrap: wrap;
}

/*
  语言切换 — 地球图标触发 + 下拉（XIRE 交互，XISA 直角审美）。
*/
.locale-switcher-host {
  position: relative;
  z-index: 60;
  flex: 0 0 auto;
}

.locale-switcher-trigger {
  box-sizing: border-box;
  display: inline-flex;
  height: 2.25rem;
  width: 2.25rem;
  flex: 0 0 auto;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  padding: 0;
  border-radius: 0;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--black) 88%, transparent);
  color: var(--gray);
  cursor: pointer;
  transition:
    border-color 150ms ease,
    color 150ms ease,
    background-color 150ms ease;
}

.locale-switcher-trigger:hover {
  color: var(--white);
  border-color: color-mix(in srgb, var(--white) 35%, var(--line));
}

a.locale-switcher-trigger,
a.locale-switcher-trigger:visited {
  text-decoration: none;
  color: var(--gray);
}

a.locale-switcher-trigger:hover,
a.locale-switcher-trigger:visited:hover {
  color: var(--white);
}

.locale-switcher-globe,
.house-tool-icon,
.xiatre-account-icon {
  display: block;
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  pointer-events: none;
  opacity: 0.92;
}

.locale-switcher-trigger:focus {
  outline: none;
}

.locale-switcher-trigger:focus-visible,
.locale-switcher-trigger[aria-expanded="true"] {
  color: var(--white);
  box-shadow: inset 0 0 0 1px var(--white);
}

.locale-flag {
  display: block;
  overflow: hidden;
  flex-shrink: 0;
  line-height: 0;
  pointer-events: none;
}

.locale-flag svg {
  display: block;
  width: 100%;
  height: 100%;
}

.locale-flag--rect {
  width: 1.35rem;
  height: 0.9rem;
  border-radius: 0;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--line) 80%, transparent);
}

#locale-switcher-menu {
  position: fixed;
  z-index: 100002;
  box-sizing: border-box;
  min-width: 11.75rem;
  max-height: min(24rem, calc(100dvh - 1.5rem));
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0.35rem;
  border-radius: 0;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--black) 96%, transparent);
  box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.65);
}

#locale-switcher-menu[hidden] {
  display: none !important;
}

#locale-switcher-menu [data-locale] {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 0.7rem;
  padding: 0.55rem 0.65rem;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--gray);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 400;
  line-height: 1.2;
  text-align: left;
  cursor: pointer;
  transition:
    background-color 120ms ease,
    color 120ms ease;
}

#locale-switcher-menu [data-locale]:hover,
#locale-switcher-menu [data-locale]:focus-visible {
  background: color-mix(in srgb, var(--white) 8%, transparent);
  color: var(--white);
  outline: none;
}

#locale-switcher-menu [data-locale][aria-selected="true"] {
  background: var(--white);
  color: var(--black);
}

#locale-switcher-menu [data-locale][aria-selected="true"]:hover,
#locale-switcher-menu [data-locale][aria-selected="true"]:focus-visible {
  background: var(--white);
  color: var(--black);
}

#ui-tip,
#desktop-update-notice {
  position: fixed;
  z-index: 100010;
  box-sizing: border-box;
  max-width: min(16rem, calc(100vw - 1rem));
  margin: 0;
  padding: 0.42rem 0.72rem;
  border-radius: 0;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.35;
  overflow-wrap: break-word;
  box-shadow:
    0 18px 40px -12px rgba(0, 0, 0, 0.72),
    0 0 0 1px color-mix(in srgb, var(--white) 10%, transparent);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(2px);
  transition:
    opacity 120ms ease,
    transform 120ms ease,
    visibility 120ms ease;
}

#ui-tip.is-on,
#desktop-update-notice.is-on {
  opacity: 1;
  visibility: visible;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  #ui-tip,
  #desktop-update-notice {
    transition: none;
  }
}

.locale-dock {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Five header controls share one square. The account card spans that row. */
.locale-dock > .help-btn,
.locale-dock > a.locale-switcher-trigger,
.locale-dock > .locale-switcher-host,
.locale-dock > .xiatre-account {
  box-sizing: border-box;
  width: 2.25rem;
  height: 2.25rem;
  flex: 0 0 2.25rem;
}

.locale-dock > .locale-switcher-host,
.locale-dock > .xiatre-account,
.locale-dock .xiatre-account-chip {
  display: flex;
  align-items: center;
  justify-content: center;
}

.locale-dock .locale-switcher-trigger,
.locale-dock .help-btn {
  box-sizing: border-box;
  width: 2.25rem;
  height: 2.25rem;
  min-width: 2.25rem;
  min-height: 2.25rem;
  max-width: 2.25rem;
  max-height: 2.25rem;
  padding: 0;
}

html.xiatre-auth-gated:not(:has(.xiatre-account--in)) .locale-dock {
  z-index: 100050;
  pointer-events: none;
}

html.xiatre-auth-gated:not(:has(.xiatre-account--in)) .locale-dock > :not(#locale-switcher):not(#xisa-desktop-download):not(#xisa-help-btn) {
  display: none !important;
}

html.xisa-help-open .xiatre-login-overlay,
html.xisa-help-open #xiatre-login-overlay {
  visibility: hidden !important;
  pointer-events: none !important;
}

html.xiatre-auth-gated:not(:has(.xiatre-account--in)) #locale-switcher,
html.xiatre-auth-gated:not(:has(.xiatre-account--in)) #locale-switcher-trigger,
html.xiatre-auth-gated:not(:has(.xiatre-account--in)) #xisa-desktop-download,
html.xiatre-auth-gated:not(:has(.xiatre-account--in)) #xisa-help-btn {
  pointer-events: auto;
}

html.xiatre-auth-gated:not(:has(.xiatre-account--in)) #locale-switcher-menu {
  z-index: 100051;
  pointer-events: auto;
}

.locale-dock .explore-plus {
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
  line-height: 1;
}

/* Account chip and import live on the play gate only — hide once a session starts. */
body:has(#stage.on) #xiatre-account,
body:has(#stage.on) #navExplore {
  display: none !important;
}

/* 账户：XIRE 人头符号 + XISA 直角方钮（覆盖 xiatre-auth.css 圆角芯片） */
.xiatre-account {
  position: relative;
  flex-shrink: 0;
}

.xiatre-account-chip {
  position: relative;
}

.xiatre-account .xiatre-account-loading {
  box-sizing: border-box;
  width: 2.25rem;
  height: 2.25rem;
  min-height: 2.25rem;
  border-radius: 0 !important;
}

.xiatre-account .xiatre-account-trigger,
.xiatre-account .xiatre-account-signin,
.xiatre-account .xiatre-account-menu,
.xiatre-account .xiatre-account-name-input,
.xiatre-account .xiatre-account-name-save,
.xiatre-account .xiatre-account-signout {
  border-radius: 0 !important;
}

.xiatre-login-card,
.xiatre-login-card.card--xisa {
  border-radius: 1rem !important;
}

.xiatre-login-card .signin-btn {
  border-radius: 6px !important;
}

.xiatre-login-card.card--xisa {
  text-align: left;
  border: 1px solid rgb(31 31 31 / 0.95) !important;
  background: rgb(10 10 10 / 0.82) !important;
  box-shadow: 0 0 72px 32px rgb(245 245 245 / 0.1) !important;
}

.xiatre-login-card.card--xisa[data-xisa-theme="white"] {
  border: 1px solid rgb(214 214 214 / 0.85) !important;
  background: rgb(245 245 245 / 0.94) !important;
  box-shadow: 0 0 72px 32px rgb(10 10 10 / 0.08) !important;
}

.xiatre-login-card.card--xisa[data-xisa-theme="gray"] {
  border: 1px solid rgb(63 63 63 / 0.9) !important;
  background: rgb(46 46 46 / 0.88) !important;
}

.xiatre-login-overlay {
  background: rgb(0 0 0 / 0.62) !important;
  backdrop-filter: blur(10px) !important;
  -webkit-backdrop-filter: blur(10px) !important;
}

.xiatre-login-card.card--xisa[data-xisa-theme="white"] .signin-btn--apple {
  background: #111 !important;
  color: #f5f5f7 !important;
  border-color: #111 !important;
}

.xiatre-login-card.card--xisa .signin-product-mark {
  display: flex !important;
  align-items: center;
  justify-content: center;
  width: 3.1rem;
  height: 3.1rem;
  margin: 0 auto 0.15rem;
  color: rgb(var(--ac) / 0.92);
}

.xiatre-login-card.card--xisa .xiatre-login-title {
  margin: 0 0 0.35rem !important;
  letter-spacing: 0.24em;
  text-indent: 0.24em;
}

.xiatre-login-card.card--xisa .signin-product-mark svg {
  width: 2rem;
  height: 2rem;
  /* S is optically right-heavy vs the tracked XISA wordmark. */
  transform: translateX(-0.12rem);
}

.xiatre-login-card.card--xisa .xiatre-login-note,
.xiatre-login-card.card--xisa .signin-note {
  display: none !important;
}

.xiatre-login-card.card--xisa .xiatre-login-back,
.xiatre-login-card.card--xisa .signin-back {
  display: block !important;
  width: fit-content;
  margin: 1rem 0 0 !important;
  text-align: left;
  text-decoration: none;
  font-size: 0.78rem;
  color: rgb(var(--ng400));
}

.xiatre-login-card.card--xisa .xiatre-login-back:hover,
.xiatre-login-card.card--xisa .signin-back:hover {
  color: rgb(var(--ng50));
}

.xiatre-login-guest,
.xiatre-login-guest-hint {
  display: none !important;
}

.xiatre-login-overlay .signin-actions {
  align-items: stretch;
  width: 100%;
}

.xiatre-login-overlay .signin-btn {
  width: 100%;
  box-sizing: border-box;
}

.locale-dock .xiatre-account,
.locale-dock .xiatre-account-chip {
  position: static;
}

.locale-dock .xiatre-account .xiatre-account-menu {
  position: absolute;
  top: calc(100% + 0.35rem);
  right: 0;
  left: 0;
  width: auto;
  min-width: 0;
  max-width: none;
  box-sizing: border-box;
  z-index: 100002;
  padding: 0.6rem 0.55rem 0.62rem;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.xiatre-account-menu .xiatre-account-profile {
  margin: 0;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.25;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--white);
}

.xisa-account-identity {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  width: auto;
  max-width: 100%;
  margin: 0 0 0.62rem;
  padding: 0 1.7rem 0 0;
  min-width: 0;
}

.xisa-account-avatar {
  position: relative;
  flex-shrink: 0;
  width: 2.9rem;
  height: 2.9rem;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 0;
  overflow: hidden;
  background: var(--surface);
  color: var(--gray);
  cursor: pointer;
}

.xisa-account-avatar-img,
.xisa-account-avatar-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.xisa-account-avatar-img {
  object-fit: cover;
  display: none;
}

.xisa-account-avatar.is-photo .xisa-account-avatar-img {
  display: block;
}

.xisa-account-avatar-fallback {
  display: block;
}

.xisa-account-avatar.is-photo .xisa-account-avatar-fallback {
  display: none;
}

.xisa-account-avatar-fallback-bg {
  fill: var(--surface);
}

.xisa-account-identity-meta {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.42rem;
}

.xisa-account-avatar-hint {
  margin: 0;
  font-size: 0.68rem;
  line-height: 1.3;
  color: var(--gray);
}

.xiatre-account-menu .xiatre-account-hint:not(.xiatre-account-hint--name),
.xiatre-account-menu .xiatre-account-wallet {
  display: none !important;
}

.xiatre-account-menu .xiatre-account-signout {
  position: absolute;
  top: 0.62rem;
  right: 0.55rem;
  z-index: 1;
  box-sizing: border-box;
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  width: 1.5rem !important;
  height: 1.5rem;
  min-width: 1.5rem;
  min-height: 1.5rem;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--gray);
  font-size: 0;
  line-height: 0;
  cursor: pointer;
  overflow: hidden;
  text-align: center;
}

.xiatre-account-menu .xiatre-account-signout:hover {
  color: var(--white);
  border-color: color-mix(in srgb, var(--white) 35%, var(--line));
  background: color-mix(in srgb, var(--white) 8%, var(--surface));
}

.xiatre-account-menu .xiatre-account-signout:focus {
  outline: none;
}

.xiatre-account-menu .xiatre-account-signout:focus-visible {
  box-shadow: inset 0 0 0 1px var(--white);
}

.xiatre-account-menu .xiatre-account-signout .house-tool-icon {
  display: block;
  width: 0.875rem;
  height: 0.875rem;
  flex-shrink: 0;
  pointer-events: none;
  opacity: 0.92;
}

.xiatre-account-premium {
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  margin: 0;
  padding: 0.12rem 0.42rem 0.12rem 0.28rem;
  border-radius: 0;
  background: var(--white);
  color: var(--black);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1;
}

.xiatre-account-premium.is-dim {
  background: color-mix(in srgb, var(--white) 14%, transparent);
  color: var(--gray);
  opacity: 1;
}

.xisa-premium-mark {
  width: 0.85rem;
  height: 0.85rem;
  display: block;
  flex-shrink: 0;
}

.xisa-account-board {
  display: flex;
  flex-direction: column;
  gap: 0.42rem;
}

.xisa-account-credit,
.xiatre-account-menu .xiatre-account-storage {
  box-sizing: border-box;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 0;
  background: color-mix(in srgb, var(--white) 6%, transparent);
}

.xisa-account-credit {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.5rem;
  padding: 0.42rem 0.6rem;
}

.xisa-account-credit-label {
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--white);
}

.xisa-account-credit-value {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--white);
}

.xiatre-account-menu .xiatre-account-storage {
  padding: 0.48rem 0.6rem 0.46rem;
  color: var(--white);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.xisa-storage-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.35rem;
  min-width: 0;
}

.xisa-storage-title {
  flex: 0 0 auto;
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--white);
  white-space: nowrap;
}

.xiatre-account-storage-label {
  margin: 0 0 0 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  line-height: 1.3;
  font-variant-numeric: tabular-nums;
  color: var(--gray);
  white-space: nowrap;
}

.xiatre-account-storage-meter {
  display: block;
  height: 0.28rem;
  margin-top: 0.38rem;
  background: color-mix(in srgb, var(--white) 18%, transparent);
  overflow: hidden;
}

.xiatre-account-storage-meter > span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--white);
}

.help-btn {
  display: inline-flex;
  height: 2.25rem;
  width: 2.25rem;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--black) 88%, transparent);
  color: var(--gray);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  padding: 0;
}

a.help-btn,
a.help-btn:visited {
  text-decoration: none;
  color: var(--gray);
}

a.help-btn:hover,
a.help-btn:visited:hover {
  color: var(--white);
}

.help-btn:hover {
  color: var(--white);
  border-color: var(--gray);
  background: color-mix(in srgb, var(--white) 8%, transparent);
}

.help-btn:focus {
  outline: none;
}

.help-btn:focus-visible {
  box-shadow: inset 0 0 0 1px var(--white);
}

.help-dialog-close {
  box-sizing: border-box;
  display: inline-flex;
  height: 2rem;
  width: 2rem;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--gray);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
}

.help-dialog-close:hover {
  color: var(--white);
  border-color: var(--gray);
}

.help-dialog {
  position: fixed;
  left: 50%;
  top: 50%;
  z-index: 100060;
  margin: 0;
  width: min(44rem, calc(100vw - 1.5rem));
  max-width: calc(100vw - 1.5rem);
  max-height: none;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--white);
  transform: translate(-50%, -50%);
}

.help-dialog::backdrop {
  background: color-mix(in srgb, #000 72%, transparent);
}

.help-dialog-panel {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-height: min(92vh, 40rem);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--black);
  color: var(--white);
}

.help-dialog-header {
  display: flex;
  flex-shrink: 0;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
}

.help-dialog-header h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: 0.02em;
  line-height: 1.35;
}

.help-dialog-hint {
  margin: 0.25rem 0 0;
  color: var(--gray);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.help-dialog-body {
  min-height: 0;
  flex: 1 1 auto;
  overflow: auto;
  overscroll-behavior: contain;
  padding: 0.85rem 1rem 1.1rem;
}

.help-dialog-body h2 {
  margin: 1.15rem 0 0.35rem;
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 650;
  letter-spacing: 0.03em;
}

.help-dialog-body h2:first-child {
  margin-top: 0;
}

.help-dialog-body p,
.help-dialog-body li {
  margin: 0.35rem 0;
  color: var(--gray);
  font-size: 0.88rem;
  line-height: 1.55;
}

.help-dialog-body strong {
  color: var(--white);
  font-weight: 650;
}

.help-dialog-body a {
  color: var(--white);
  text-underline-offset: 0.15em;
}

.help-dialog-body ul,
.help-dialog-body ol {
  margin: 0.25rem 0 0.65rem;
  padding-left: 1.2rem;
}

.help-dialog-body hr {
  margin: 1rem 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.help-dialog-body table {
  width: 100%;
  margin: 0.45rem 0 0.8rem;
  border-collapse: collapse;
}

.help-dialog-body th,
.help-dialog-body td {
  border: 1px solid var(--line);
  padding: 0.4rem 0.5rem;
  text-align: left;
  vertical-align: top;
  color: var(--gray);
  font-size: 0.8rem;
  line-height: 1.45;
}

.help-dialog-body th {
  color: var(--white);
  font-weight: 650;
}

.help-foot {
  flex-shrink: 0;
  padding: 0.75rem 1rem 1rem;
  text-align: center;
}

.help-foot-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem 0.65rem;
  color: var(--gray);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.help-foot-nav a {
  color: inherit;
  text-decoration: none;
}

.help-foot-nav a:hover {
  color: var(--white);
}

.help-foot-sep {
  opacity: 0.55;
  user-select: none;
}

.xisa-onboard {
  position: fixed;
  inset: 0;
  z-index: 100020;
  overflow: hidden;
  pointer-events: none;
}

.xisa-onboard[hidden] {
  display: none !important;
}

.xisa-onboard-dim {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, #000 58%, transparent);
  pointer-events: auto;
}

.xisa-onboard.has-target .xisa-onboard-dim {
  background: transparent;
}

.xisa-onboard-spot {
  position: absolute;
  z-index: 1;
  box-sizing: border-box;
  border: 1px solid var(--white);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--white) 25%, transparent),
    0 0 0 9999px color-mix(in srgb, #000 58%, transparent);
  pointer-events: none;
}

.xisa-onboard-card {
  position: absolute;
  z-index: 2;
  width: min(22.5rem, calc(100vw - 2rem));
  pointer-events: auto;
  border-radius: 0;
  border: 1px solid var(--line);
  background: var(--black);
  color: var(--white);
  padding: 1.2rem 1.2rem 1.1rem;
}

.xisa-onboard-card.is-docked {
  left: 50%;
  top: 50%;
  bottom: auto;
  transform: translate(-50%, -50%);
}

.xisa-onboard-card.is-anchored {
  transform: none;
}

.xisa-onboard-arrow {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--black);
  border: 1px solid var(--line);
  pointer-events: none;
}

.xisa-onboard-card.is-docked .xisa-onboard-arrow {
  display: none;
}

.xisa-onboard-card[data-arrow="top"] .xisa-onboard-arrow {
  top: 0;
  left: var(--onboard-arrow, 50%);
  transform: translate(-50%, -50%) rotate(45deg);
  border-right: 0;
  border-bottom: 0;
}

.xisa-onboard-card[data-arrow="bottom"] .xisa-onboard-arrow {
  top: 100%;
  left: var(--onboard-arrow, 50%);
  transform: translate(-50%, -50%) rotate(45deg);
  border-left: 0;
  border-top: 0;
}

.xisa-onboard-card[data-arrow="left"] .xisa-onboard-arrow {
  left: 0;
  top: var(--onboard-arrow, 50%);
  transform: translate(-50%, -50%) rotate(45deg);
  border-right: 0;
  border-bottom: 0;
}

.xisa-onboard-card[data-arrow="right"] .xisa-onboard-arrow {
  left: 100%;
  top: var(--onboard-arrow, 50%);
  transform: translate(-50%, -50%) rotate(45deg);
  border-left: 0;
  border-top: 0;
}

.xisa-onboard-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--white);
}

.xisa-onboard-dots {
  display: flex;
  gap: 0.35rem;
  margin: 0.75rem 0 0.9rem;
}

.xisa-onboard-dot {
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 0;
  background: var(--gray);
  opacity: 0.45;
}

.xisa-onboard-dot.is-on {
  background: var(--white);
  opacity: 1;
}

.xisa-onboard-title {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.35;
}

.xisa-onboard-body {
  margin: 0.45rem 0 0;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--gray);
}

.xisa-onboard-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 1.1rem;
}

.xisa-onboard-skip {
  border: 0;
  background: transparent;
  color: var(--gray);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  padding: 0.35rem 0;
}

.xisa-onboard-skip:hover {
  color: var(--white);
}

.xisa-onboard-next {
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--white);
  color: var(--black);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.48rem 0.95rem;
  cursor: pointer;
}

html[lang="zh-CN"] .xisa-onboard-skip,
html[lang="zh-CN"] .xisa-onboard-next,
html[lang="zh-TW"] .xisa-onboard-skip,
html[lang="zh-TW"] .xisa-onboard-next {
  font-family: var(--font-sans);
  letter-spacing: 0.08em;
  text-transform: none;
}

.xisa-onboard-next:hover {
  filter: brightness(1.06);
}

html.xisa-onboard-open {
  overflow: hidden;
}

/* Stroke icons — recipe aligned with favicon (round caps, no fill) */
.play-instrument-dock {
  position: fixed;
  top: max(0.7rem, env(safe-area-inset-top, 0px));
  right: max(0.7rem, env(safe-area-inset-right, 0px));
  z-index: 28;
  display: none;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--white);
  cursor: pointer;
  width: var(--slot-toolbar-h, 2rem);
  height: var(--slot-toolbar-h, 2rem);
  min-width: var(--slot-toolbar-h, 2rem);
  padding: 0;
  box-sizing: border-box;
}

/* Library playback already has the instrument control in the header dock.
   A second copy on the photo looks like leftover chrome. */
.player.on .play-instrument-dock {
  display: none;
}

.stage.on .play-instrument-dock {
  display: inline-flex;
}

.play-instrument-dock:hover {
  border-color: var(--white);
  background: color-mix(in srgb, var(--white) 8%, transparent);
}

.play-instrument-dock .xisa-icon {
  width: 0.96rem;
  height: 0.96rem;
}

.js-instrument-icon[hidden] {
  display: none !important;
}

body:has(#stage.on) .play-instrument-dock {
  top: 3.55rem;
  right: max(1rem, env(safe-area-inset-right, 0px));
}

.xisa-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.xisa-btn-with-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

.xisa-icon {
  flex-shrink: 0;
  display: block;
  width: 0.82rem;
  height: 0.82rem;
  color: inherit;
}

.xisa-icon-btn .xisa-icon {
  width: 0.88rem;
  height: 0.88rem;
}

.xisa-icon-btn:has(.xisa-icon--rotate-tl) {
  justify-content: flex-start;
  align-items: flex-start;
  padding: 0.22rem 0 0 0.22rem;
}

.xisa-icon-btn .xisa-icon--rotate-tl {
  width: 0.95rem;
  height: 0.95rem;
}

.xisa-icon--lock .xisa-lock-dot {
  opacity: 0;
  transition: opacity 0.15s ease;
}

.xisa-btn-with-icon.active .xisa-icon--lock .xisa-lock-dot {
  opacity: 1;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 全站视口锁定 — 页面本身不出现纵向滚动条 */
html {
  height: 100%;
  overflow: hidden;
}

body {
  height: 100%;
  overflow: hidden;
}

.xisa-shell {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  opacity: 1;
  transition: opacity 0.32s ease;
}

/* Beat display:flex/grid on [hidden] (meta-bar, nav, empty overlays). */
[hidden] {
  display: none !important;
}

.xisa-shell.xisa-page-enter {
  opacity: 0;
}

.xisa-shell.xisa-page-enter.is-active {
  opacity: 1;
}

.xisa-shell.xisa-page-leaving {
  opacity: 0;
  pointer-events: none;
}

.xisa-view-fade {
  transition: opacity 0.32s ease;
}

.xisa-view-fade.is-leaving {
  opacity: 0;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .xisa-shell,
  .xisa-view-fade {
    transition: none !important;
  }
}

.xisa-main {
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
}

/* Home model picker (XIRE/XIVO form, Xisa square chrome) */
.model-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 40;
  width: min(18.5rem, calc(100vw - 2rem));
  max-height: 18rem;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  margin-top: 0;
  border: 1px solid var(--line);
  background: var(--black);
  box-shadow: 0 12px 28px color-mix(in srgb, #000 45%, transparent);
}

.model-menu-h {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 0.45rem 0.7rem;
  border-top: 1px solid var(--line);
  background: var(--black);
  color: var(--gray);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.model-menu-h:first-child {
  border-top: 0;
}

html[lang="zh-CN"] .model-menu-h {
  text-transform: none;
  letter-spacing: 0.08em;
}

.model-menu-msg,
.model-menu-empty {
  padding: 0.35rem 0.7rem 0.55rem;
  color: var(--gray);
  font-size: 0.75rem;
}

.model-menu-msg {
  color: #c9a36a;
}

.model-menu-opt {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0.5rem 0.7rem;
  border: 0;
  border-top: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  background: transparent;
  color: var(--white);
  font: inherit;
  font-size: 0.82rem;
  text-align: left;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.model-menu-opt:hover {
  background: color-mix(in srgb, var(--white) 6%, transparent);
}

.model-menu-opt.is-active {
  color: var(--white);
  background: color-mix(in srgb, var(--white) 8%, transparent);
  font-weight: 600;
}

.model-menu-opt--settings {
  color: var(--gray);
  letter-spacing: 0.06em;
}

.model-menu-row {
  position: relative;
  display: flex;
  align-items: stretch;
}

.model-menu-row.is-active {
  background: color-mix(in srgb, var(--white) 8%, transparent);
}

.model-menu-opt--api {
  padding-right: 2rem;
  mask-image: linear-gradient(to right, #000 0%, #000 calc(100% - 1.6rem), transparent 100%);
  -webkit-mask-image: linear-gradient(to right, #000 0%, #000 calc(100% - 1.6rem), transparent 100%);
}

.model-menu-del {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 2rem;
  border: 0;
  background: transparent;
  color: var(--gray);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
}

.model-menu-del:hover {
  color: #e8a0a0;
}

.model-api-dialog {
  position: fixed;
  left: 50%;
  top: 50%;
  z-index: 110;
  margin: 0;
  width: min(24rem, calc(100vw - 1.5rem));
  max-height: none;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--white);
  transform: translate(-50%, -50%);
}

.model-api-dialog::backdrop {
  background: color-mix(in srgb, #000 72%, transparent);
}

.model-api-panel {
  border: 1px solid var(--line);
  background: var(--black);
  color: var(--white);
}

.model-api-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
}

.model-api-header h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.model-api-header p {
  margin: 0.3rem 0 0;
  font-size: 0.72rem;
  line-height: 1.45;
  color: var(--gray);
}

.model-api-body {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 0.9rem 1rem 1.1rem;
}

.model-api-field {
  display: block;
}

.model-api-label {
  display: block;
  color: var(--gray);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.model-api-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.4rem;
}

.model-api-presets button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--white);
  font: inherit;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.65rem;
  cursor: pointer;
}

.model-api-presets button:hover {
  border-color: var(--gray);
}

.model-field {
  display: block;
  box-sizing: border-box;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--surface);
  color: var(--white);
  font: inherit;
  font-size: 0.85rem;
  outline: none;
}

.model-field:focus {
  border-color: var(--gray);
}

.model-api-note {
  margin: 0.35rem 0 0;
  color: var(--gray);
  font-size: 0.7rem;
  line-height: 1.4;
}

.model-api-error {
  margin: 0;
  color: #e8a0a0;
  font-size: 0.75rem;
}

.model-api-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  padding-top: 0.15rem;
}

.model-api-actions button {
  min-width: 5.5rem;
  height: 2rem;
  padding: 0 0.7rem;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--white);
  font: inherit;
  font-size: 0.75rem;
  cursor: pointer;
}

.model-api-actions button:hover {
  border-color: var(--gray);
}

.model-api-save {
  border-color: var(--white);
}

@media (max-width: 767px), (max-height: 519px) {
  html:not(.xisa-desktop-shell) #xisa-desktop-download {
    display: none !important;
  }
  .locale-dock {
    top: max(0.5rem, env(safe-area-inset-top, 0px));
    right: max(0.5rem, env(safe-area-inset-right, 0px));
    gap: 0.35rem;
    flex-wrap: wrap;
    justify-content: flex-end;
    max-width: calc(100vw - 1rem);
  }
}