/* 登录 / 访客整页皮（令牌、cm-page、卡片、表单、语种下拉）。data-tt-skin=login，不要进 appearance 桶。 */

:root {
  --cm-ink: #111111;
  --cm-muted: #666666;
  --cm-faint: #8a8a8a;
  --cm-line: #e5e5e5;
  --cm-line-strong: #cfcfcf;
  --cm-canvas: #f5f5f5;
  --cm-surface: #ffffff;
  --cm-accent: #111111;
  --cm-danger: #b42318;
  --cm-warn: #b54708;
  --cm-ok: #067647;
  --cm-radius: 8px;
  --cm-control-h: 44px;
  --cm-gap: 12px;
  --cm-keyboard-inset: 0px;
  --cm-font: 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, 'PingFang SC', 'Hiragino Sans GB',
    'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --cm-mono: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --cm-ink: #f2f2f2;
    --cm-muted: #a8a8a8;
    --cm-faint: #8a8a8a;
    --cm-line: #2e2e2e;
    --cm-line-strong: #454545;
    --cm-canvas: #121212;
    --cm-surface: #1a1a1a;
    --cm-accent: #f2f2f2;
  }
}

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

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--cm-font);
  color: var(--cm-ink);
  background: var(--cm-canvas);
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
  color: inherit;
}

a {
  color: var(--cm-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}
a:hover {
  color: var(--cm-ink);
}

.cm-page {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--cm-canvas);
}

.cm-page__body {
  flex: 1 1 auto;
  display: flex;
  width: 100%;
}

.cm-card {
  width: 100%;
  background: var(--cm-surface);
  color: var(--cm-ink);
}

.cm-page--pc .cm-page__body {
  align-items: center;
  justify-content: center;
  padding: 2.75rem 1.5rem;
}

.cm-page--pc .cm-card {
  max-width: 420px;
  border: 1px solid var(--cm-line);
  border-radius: 10px;
  padding: 2rem 1.75rem 1.65rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.cm-page--pc .cm-title {
  font-size: 1.5rem;
}

.cm-page--pc .cm-input,
.cm-page--pc .cm-btn {
  font-size: 14px;
}

.cm-page--pc {
  --cm-control-h: 40px;
}

.cm-page--pad .cm-page__body {
  align-items: center;
  justify-content: center;
  padding: 2.25rem 1.5rem;
}

.cm-page--pad .cm-card {
  max-width: 28rem;
  width: 100%;
  border: 1px solid var(--cm-line);
  border-radius: 10px;
  padding: 2rem 1.75rem 1.65rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.cm-page--pad .cm-card--wide {
  max-width: 40rem;
}

.cm-page--pad .cm-title {
  font-size: 1.5rem;
}

.cm-page--pad .cm-input,
.cm-page--pad .cm-btn {
  font-size: 16px;
}

.cm-page--pad {
  --cm-control-h: 44px;
}

.cm-page--pc .cm-card--wide {
  max-width: 40rem;
}

.cm-article {
  text-align: left;
  margin: 0 0 1.25rem;
}

.cm-article__section {
  margin: 0 0 1.25rem;
}

.cm-article__section h2 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
}

.cm-article__section p {
  margin: 0 0 0.65rem;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--cm-muted);
}

.cm-article__section p:last-child {
  margin-bottom: 0;
}

.cm-page--mobile {
  background: var(--cm-surface);
  --cm-control-h: 48px;
  --cm-mobile-pad-x: 1.25rem;
  --cm-mobile-pad-top: 3.25rem;
  padding-top: env(safe-area-inset-top, 0px);
}

.cm-page--mobile .cm-page__body {
  align-items: stretch;
  justify-content: flex-start;
  padding: var(--cm-mobile-pad-top) var(--cm-mobile-pad-x) 0;
  padding-bottom: var(--cm-keyboard-inset, 0px);
}

.cm-page--mobile .cm-card {
  max-width: none;
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  border: 0;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
  min-height: 0;
}

.cm-page--mobile .cm-card__content {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.cm-page--mobile .cm-form {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.cm-page--mobile.cm-page--center .cm-page__body {
  justify-content: center;
  padding-top: max(var(--cm-mobile-pad-top), 2.5rem);
  padding-bottom: max(2.5rem, env(safe-area-inset-bottom, 0px));
}

.cm-page--mobile .cm-brand {
  margin: 0.25rem 0 2.25rem;
  font-size: 1.0625rem;
  letter-spacing: 0.04em;
}

.cm-page--mobile .cm-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.cm-page--mobile .cm-desc {
  margin-bottom: 1.5rem;
}

.cm-page--mobile .cm-fields {
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.cm-page--mobile .cm-input,
.cm-page--mobile .cm-btn {
  font-size: 16px;
}

.cm-page--mobile .cm-footer {
  border-top: 0;
  background: transparent;
  padding: 1.25rem var(--cm-mobile-pad-x)
    calc(1.25rem + env(safe-area-inset-bottom, 0px));
  opacity: 0.85;
}

.cm-page--mobile .cm-actions--sticky {
  position: sticky;
  bottom: 0;
  z-index: 5;
  margin-top: auto;
  padding: 1.25rem 0 calc(1rem + env(safe-area-inset-bottom, 0px) + var(--cm-keyboard-inset, 0px));
  background: linear-gradient(to top, var(--cm-surface) 72%, rgba(255, 255, 255, 0));
}

@media (prefers-color-scheme: dark) {
  .cm-page--mobile .cm-actions--sticky {
    background: linear-gradient(to top, var(--cm-surface) 72%, rgba(26, 26, 26, 0));
  }
}

.cm-brand {
  margin: 0 0 1.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.2;
  color: var(--cm-ink);
  text-align: left;
}

.cm-title {
  margin: 0 0 0.4rem;
  font-size: 1.375rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--cm-ink);
}

.cm-desc {
  margin: 0 0 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--cm-muted);
}

.cm-code {
  margin: 0 0 0.65rem;
  font-family: var(--cm-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--cm-faint);
  text-transform: uppercase;
}

.cm-center .cm-brand,
.cm-center .cm-title,
.cm-center .cm-desc,
.cm-center .cm-code {
  text-align: center;
}

.cm-alert {
  margin: 0 0 var(--cm-gap);
  padding: 0.75rem 0.875rem;
  border: 1px solid var(--cm-line);
  border-radius: var(--cm-radius);
  font-size: 0.875rem;
  line-height: 1.45;
  background: #fafafa;
  color: var(--cm-ink);
  text-align: left;
}
.cm-alert--danger {
  border-color: #f3d1cd;
  background: #fef6f5;
  color: var(--cm-danger);
}

.cm-form {
  width: 100%;
}

.cm-fields {
  display: flex;
  flex-direction: column;
  gap: var(--cm-gap);
  width: 100%;
  margin: 0 0 var(--cm-gap);
}

.cm-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  width: 100%;
}

.cm-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--cm-muted);
  line-height: 1.3;
}

.cm-field__hint {
  margin: 0;
  font-size: 0.75rem;
  color: var(--cm-faint);
  line-height: 1.35;
}

.cm-field__hint--error {
  color: var(--cm-danger);
}

.cm-input-wrap {
  position: relative;
  width: 100%;
}

.cm-input {
  display: block;
  width: 100%;
  height: var(--cm-control-h);
  margin: 0;
  padding: 0 12px;
  border: 1px solid var(--cm-line);
  border-radius: var(--cm-radius);
  background: var(--cm-surface);
  color: var(--cm-ink);
  font-size: 15px;
  line-height: var(--cm-control-h);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.cm-input--with-action {
  padding-right: 3.25rem;
}

.cm-input::placeholder {
  color: var(--cm-faint);
}

.cm-input:focus {
  border-color: var(--cm-ink);
}

.cm-input-action {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  border: 0;
  background: transparent;
  padding: 4px 6px;
  font-size: 12px;
  line-height: 1;
  color: var(--cm-muted);
  cursor: pointer;
}

.cm-input-action:hover {
  color: var(--cm-ink);
}

.cm-actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  width: 100%;
}

.cm-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: var(--cm-control-h);
  margin: 0;
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: var(--cm-radius);
  background: #fff;
  color: var(--cm-ink);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
}

.cm-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.cm-btn--primary {
  background: var(--cm-ink);
  border-color: var(--cm-ink);
  color: var(--cm-canvas);
}

.cm-btn--primary:hover:not(:disabled) {
  filter: brightness(1.08);
}

.cm-btn--default {
  background: var(--cm-surface);
  border-color: var(--cm-line-strong);
  color: var(--cm-ink);
}

.cm-btn--default:hover:not(:disabled) {
  border-color: var(--cm-ink);
  background: var(--cm-canvas);
}

.cm-btn__spin {
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: cm-spin 0.7s linear infinite;
  flex: 0 0 auto;
}

.cm-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem 0.65rem;
  margin-top: 1.25rem;
  font-size: 0.875rem;
  color: var(--cm-faint);
}

.cm-links a {
  color: var(--cm-muted);
}

.cm-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 1rem 1.25rem 1.5rem;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--cm-faint);
  text-align: center;
}

.cm-footer__line {
  margin: 0;
}

.cm-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin: 0 0 1.5rem;
}

.cm-card__head .cm-brand {
  margin: 0;
}

.cm-center .cm-card__head .cm-brand {
  text-align: start;
}

.cm-lang {
  position: relative;
  flex: 0 0 auto;
}

.cm-lang__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
  padding: 0.25rem 0.4rem;
  border: 1px solid transparent;
  border-radius: var(--cm-radius);
  background: transparent;
  color: var(--cm-ink);
  font: inherit;
  font-size: 0.8125rem;
  line-height: 1.2;
  cursor: pointer;
}

.cm-lang__btn:hover,
.cm-lang__btn[aria-expanded='true'] {
  border-color: var(--cm-line);
  background: var(--cm-canvas);
}

.cm-lang__name {
  max-width: 6.5rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cm-lang__menu {
  position: absolute;
  inset-inline-end: 0;
  top: calc(100% + 4px);
  z-index: 20;
  min-width: 14rem;
  max-height: 16rem;
  overflow: auto;
  padding: 0.35rem 0;
  border: 1px solid var(--cm-line);
  border-radius: var(--cm-radius);
  background: var(--cm-surface);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  text-align: start;
}

.cm-lang__search {
  width: calc(100% - 1rem);
  height: 36px;
  margin: 0.25rem 0.5rem 0.45rem;
}

.cm-lang__item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  margin: 0;
  padding: 0.45rem 0.75rem;
  border: 0;
  background: transparent;
  color: var(--cm-ink);
  font: inherit;
  font-size: 0.875rem;
  text-align: start;
  cursor: pointer;
}

.cm-lang__item:hover,
.cm-lang__item.active {
  background: var(--cm-canvas);
}

.cm-lang__native {
  flex: 1 1 auto;
}

.cm-lang__code {
  margin-inline-start: auto;
  font-family: var(--cm-mono);
  font-size: 0.75rem;
  color: var(--cm-faint);
}

.cm-lang__empty {
  margin: 0;
  padding: 0.65rem 0.75rem;
  font-size: 0.8125rem;
  color: var(--cm-faint);
}

.cm-page--mobile .cm-lang__name {
  max-width: 5.5rem;
}

@keyframes cm-spin {
  to {
    transform: rotate(360deg);
  }
}