/* XFP Cloud chrome: nav, footer, auth, toast. Tokens are local to this site. */

:root {
  --ink: #323d47;
  --ink-strong: #191919;
  --muted: #5c656e;
  --kicker: #6d7682;
  --line: #e6e8eb;
  --paper: #ffffff;
  --nav-h: 72px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --sans: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--muted);
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.7;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

button,
input,
select,
textarea {
  font: inherit;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--ink-strong);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 80;
  padding: 0.45rem 0.75rem;
  background: #fff;
  color: var(--ink-strong);
}

.skip:focus {
  top: 0.6rem;
}

html.nav-lock,
html.modal-lock {
  overflow: hidden;
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 50;
  color: #fff;
  background: transparent;
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.site-nav.is-solid,
.site-nav.menu-open {
  color: var(--ink-strong);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 1px 9px rgba(0, 0, 0, 0.05);
  backdrop-filter: saturate(1.2) blur(16px);
}

.site-nav.is-solid :focus-visible,
.site-nav.menu-open :focus-visible {
  outline-color: var(--ink-strong);
}

.site-nav:not(.is-solid):not(.menu-open) :focus-visible {
  outline-color: #fff;
}

.nav-bar {
  height: 100%;
  width: min(1140px, calc(100% - 48px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-start {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: inherit;
  text-decoration: none;
  letter-spacing: 0.03em;
  font-size: 1.05rem;
  font-weight: 400;
}

.mark-logo {
  width: 28px;
  height: 28px;
  display: block;
}

.nav-desk {
  display: flex;
  align-items: center;
  gap: 1.45rem;
  margin-left: auto;
}

.nav-desk a,
.nav-account a,
.nav-account button {
  color: inherit;
  opacity: 0.82;
  text-decoration: none;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  transition: opacity 0.2s ease, box-shadow 0.2s ease;
}

.nav-desk a:hover,
.nav-account a:hover,
.nav-account button:hover,
.nav-desk a[aria-current="page"],
.nav-account a[aria-current="page"] {
  opacity: 1;
}

.nav-desk a[aria-current="page"],
.nav-account > a[aria-current="page"] {
  box-shadow: inset 0 -1px 0 currentColor;
}

.nav-account {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: 0.2rem;
}

.nav-lang {
  position: relative;
  margin-left: 0.35rem;
}

.lang-toggle {
  color: inherit;
  opacity: 0.82;
  background: none;
  border: 0;
  padding: 0 0.15rem 0 0;
  cursor: pointer;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  transition: opacity 0.2s ease;
}

.lang-toggle::after {
  content: "";
  display: inline-block;
  width: 0.38rem;
  height: 0.38rem;
  margin-left: 0.4rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-0.12rem) rotate(45deg);
  transition: transform 0.2s ease;
}

.nav-lang.is-open .lang-toggle,
.lang-toggle:hover {
  opacity: 1;
}

.nav-lang.is-open .lang-toggle::after {
  transform: translateY(0.05rem) rotate(225deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 0.85rem);
  right: 0;
  z-index: 60;
  min-width: 9.2rem;
  margin: 0;
  padding: 0.35rem 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink-strong);
  box-shadow: 0 18px 50px rgba(25, 25, 25, 0.08);
}

.lang-menu[hidden] {
  display: none;
}

html.motion .lang-menu {
  animation: lang-in 0.22s var(--ease);
}

@keyframes lang-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.lang-menu a,
.lang-menu button {
  display: block;
  width: 100%;
  padding: 0.48rem 1rem;
  border: 0;
  background: none;
  color: var(--ink);
  font: inherit;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
}

.lang-menu a[aria-current="true"] {
  color: var(--ink-strong);
  box-shadow: inset 2px 0 0 currentColor;
}

.lang-menu button:disabled {
  opacity: 0.38;
  cursor: default;
}

.lang-menu a:hover {
  background: #f6f7f8;
}

.nav-mail {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.85rem;
}

.nav-user {
  position: relative;
}

.account-toggle {
  display: inline-flex;
  align-items: center;
  max-width: 11rem;
  color: inherit;
  opacity: 0.72;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  font: inherit;
  letter-spacing: 0;
}

.account-toggle::after {
  content: "";
  flex: none;
  width: 0.38rem;
  height: 0.38rem;
  margin-left: 0.4rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-0.12rem) rotate(45deg);
  transition: transform 0.2s ease;
}

.nav-user.is-open .account-toggle,
.account-toggle:hover {
  opacity: 1;
}

.nav-user.is-open .account-toggle::after {
  transform: translateY(0.05rem) rotate(225deg);
}

.account-menu {
  position: absolute;
  top: calc(100% + 0.85rem);
  right: 0;
  z-index: 60;
  min-width: 7.5rem;
  margin: 0;
  padding: 0.35rem 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink-strong);
  box-shadow: 0 18px 50px rgba(25, 25, 25, 0.08);
  animation: lang-in 0.22s var(--ease);
}

.account-menu[hidden] {
  display: none;
}

.account-menu button {
  display: block;
  width: 100%;
  padding: 0.48rem 1rem;
  border: 0;
  background: none;
  color: var(--ink);
  font: inherit;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  text-align: left;
  opacity: 1;
  cursor: pointer;
}

.nav-account .account-menu a,
.nav-account .account-menu button {
  opacity: 1;
  letter-spacing: 0.02em;
}

.nav-account .account-menu a {
  display: block;
  width: 100%;
  padding: 0.48rem 1rem;
  font-size: 0.92rem;
  color: var(--ink);
  box-shadow: none;
}

.nav-account .account-menu a:hover {
  background: #f6f7f8;
  opacity: 1;
}

.account-menu button:hover {
  background: #f6f7f8;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  position: relative;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle-bars::before {
  top: -6px;
}

.nav-toggle-bars::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after {
  top: 0;
  transform: rotate(-45deg);
}

.nav-mob {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 45;
  padding: 1.6rem 1.75rem 2rem;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

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

.nav-mob a {
  color: var(--ink);
  text-decoration: none;
  font-size: clamp(1.55rem, 4vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  padding: 0.45rem 0;
  transition: padding 0.2s ease, box-shadow 0.2s ease;
}

.nav-mob a[aria-current="page"] {
  box-shadow: inset 2px 0 0 currentColor;
  padding-left: 0.75rem;
}

.site-footer {
  border-top: 1px solid #f1f2f3;
  background: #fff;
  padding: 1.5rem 0 2.2rem;
}

.footer-row {
  width: min(1140px, calc(100% - 60px));
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
}

.site-footer .brand {
  color: var(--ink-strong);
}

.footer-note {
  margin: 0;
  flex: 1 1 16rem;
  color: var(--kicker);
  font-size: 0.92rem;
}

.site-footer a.mail {
  color: var(--ink);
  text-decoration: none;
}

.site-footer a.mail:hover {
  color: #000;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.15rem;
  width: 100%;
  padding-top: 0.35rem;
}

.footer-links a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}

.footer-links a:hover {
  color: #000;
}

html.is-doc {
  scroll-padding-top: calc(var(--nav-h) + 16px);
}

html.is-doc body {
  padding-top: var(--nav-h);
}

html.is-doc .site-nav {
  color: var(--ink-strong);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 1px 9px rgba(0, 0, 0, 0.05);
  backdrop-filter: saturate(1.2) blur(16px);
}

html.is-doc .site-nav :focus-visible {
  outline-color: var(--ink-strong);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 1.25rem;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: transparent;
  color: #fff;
  text-decoration: none;
  letter-spacing: 0.04em;
  font-size: 0.95rem;
  font-weight: 400;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  background: #fff;
  color: var(--ink-strong);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
}

.btn:active {
  transform: scale(0.98);
}

.btn-ink {
  border-color: var(--ink-strong);
  color: var(--ink-strong);
  background: transparent;
  white-space: nowrap;
}

.btn-ink:hover {
  background: var(--ink-strong);
  color: #fff;
  box-shadow: none;
}

.btn-solid {
  width: 100%;
  margin-top: 1.2rem;
  border-color: var(--ink-strong);
  background: var(--ink-strong);
  color: #fff;
}

.btn-solid:hover {
  background: #000;
  color: #fff;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16);
}

.btn:disabled {
  opacity: 0.55;
  cursor: default;
  transform: none;
  box-shadow: none;
}

.auth-backdrop {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  background: rgba(0, 0, 0, 0.48);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.auth-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.auth-panel {
  position: relative;
  width: min(440px, 100%);
  max-height: min(92vh, 720px);
  overflow: auto;
  background: #fff;
  color: var(--muted);
  border-radius: 18px;
  padding: 2rem 1.7rem 1.55rem;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
  transform: translateY(12px);
  transition: transform 0.28s var(--ease);
}

.auth-backdrop.is-open .auth-panel {
  transform: none;
}

.auth-close {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  width: 40px;
  height: 40px;
  border: 0;
  background: transparent;
  color: var(--ink-strong);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.auth-panel h2 {
  margin: 0 0 0.35rem;
  font-size: 1.85rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--ink);
}

.auth-lead {
  margin: 0 0 1.1rem;
  color: var(--kicker);
}

.auth-panel [hidden] {
  display: none !important;
}

.auth-step {
  animation: auth-in 0.32s var(--ease);
}

@keyframes auth-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.auth-mail-line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.85rem;
  margin: 0 0 0.15rem;
}

.auth-mail {
  margin: 0;
  min-width: 0;
  color: var(--ink-strong);
  font-size: 1rem;
  word-break: break-all;
}

.auth-mail-line button {
  flex: none;
  border: 0;
  background: none;
  padding: 0;
  color: var(--kicker);
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
}

.auth-mail-line button:hover {
  color: var(--ink-strong);
}

.auth-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.15rem;
  margin-top: 1rem;
}

.auth-links button {
  border: 0;
  background: none;
  padding: 0;
  color: var(--kicker);
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
}

.auth-links button:hover {
  color: var(--ink-strong);
}

.auth-agree {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.4rem;
  align-items: center;
  margin: 1rem 0 0;
  color: var(--kicker);
  font-size: 0.88rem;
  line-height: 1.45;
}

.auth-agree input {
  accent-color: var(--ink-strong);
}

.auth-agree label {
  cursor: pointer;
}

.auth-agree a {
  color: var(--ink-strong);
}

.lbl {
  display: block;
  margin: 0.9rem 0 0.3rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--kicker);
}

.field {
  width: 100%;
  height: 48px;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  color: var(--ink-strong);
  font-size: 1rem;
  font-weight: 400;
}

.field::placeholder {
  color: #a0a7ae;
}

.field:focus {
  outline: none;
  border-bottom-color: var(--ink-strong);
}

.code-row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.code-row .field {
  flex: 1;
}

.form-error {
  min-height: 1.35em;
  margin: 0.75rem 0 0;
  color: #8d3b3b;
  font-size: 0.92rem;
}

.form-error:empty {
  min-height: 0;
  margin: 0;
}

.pick {
  position: relative;
  width: min(22rem, 100%);
  max-width: 100%;
}

.pick select {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  pointer-events: none;
}

.pick-toggle {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
  width: 100%;
  min-height: 44px;
  padding: 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--ink-strong);
  font: inherit;
  text-align: right;
  cursor: pointer;
}

.pick-toggle::after {
  content: "";
  flex: none;
  width: 0.38rem;
  height: 0.38rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-0.12rem) rotate(45deg);
  transition: transform 0.2s ease;
}

.pick.is-open .pick-toggle::after {
  transform: translateY(0.05rem) rotate(225deg);
}

.pick-menu {
  position: absolute;
  top: calc(100% + 0.35rem);
  right: 0;
  z-index: 30;
  width: max(100%, 17rem);
  max-height: min(18rem, 52vh);
  overflow: auto;
  margin: 0;
  padding: 0.35rem 0 0.5rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink-strong);
  box-shadow: 0 18px 50px rgba(25, 25, 25, 0.08);
  animation: lang-in 0.22s var(--ease);
}

.pick-menu[hidden] {
  display: none;
}

.pick-group {
  margin: 0.55rem 0 0.1rem;
  padding: 0.15rem 1rem;
  color: var(--kicker);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.pick-option {
  display: block;
  width: 100%;
  padding: 0.48rem 1rem;
  border: 0;
  background: none;
  color: var(--ink);
  font: inherit;
  font-size: 0.95rem;
  text-align: left;
  cursor: pointer;
}

.pick-option[aria-selected="true"] {
  color: var(--ink-strong);
  box-shadow: inset 2px 0 0 currentColor;
}

.pick-option:hover {
  background: #f6f7f8;
}

.stack-form .pick {
  width: 100%;
}

.confirm-backdrop {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  background: rgba(0, 0, 0, 0.48);
  backdrop-filter: blur(8px);
}

.confirm-backdrop[hidden] {
  display: none;
}

.confirm-card {
  width: min(380px, 100%);
  padding: 1.5rem 1.4rem 1.15rem;
  background: #fff;
  color: var(--ink);
  border-radius: 18px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
  animation: confirm-in 0.28s var(--ease);
}

.confirm-card p {
  margin: 0;
  font-size: 1.15rem;
  line-height: 1.45;
}

.confirm-actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.15rem;
  margin-top: 1.15rem;
}

.confirm-actions .btn-solid {
  margin-top: 0;
  white-space: nowrap;
}

.confirm-cancel {
  align-self: flex-end;
  width: max-content;
  min-height: 44px;
  padding: 0.2rem 0.1rem 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  white-space: nowrap;
  word-break: keep-all;
  cursor: pointer;
}

@keyframes confirm-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.4rem;
  z-index: 90;
  max-width: calc(100% - 2rem);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  background: var(--ink-strong);
  color: #fff;
  font-size: 0.92rem;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.toast.is-on {
  opacity: 1;
  transform: translateX(-50%);
}

@media (max-width: 860px) {
  .nav-desk {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-bar {
    width: min(1140px, calc(100% - 28px));
  }

  .account-toggle {
    max-width: 6.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .auth-panel,
  .toast,
  .btn {
    transform: none !important;
  }
}