body:has(.registration-page__stack) {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: linear-gradient(165deg, var(--bg) 0%, var(--accent-soft) 100%);
  background-attachment: fixed;
}

main.page:has(.registration-page__stack) {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: none;
  min-height: 0;
  padding: 1.25rem;
  box-sizing: border-box;
}

main.page.panel-center:has(.registration-page__stack) {
  min-height: 0;
  padding: 1.25rem;
}

.registration-page__stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  width: 100%;
}

.registration-page__stack > .site-credit {
  position: static;
  z-index: auto;
  margin: 0;
  padding: 0 0 0.25rem;
}

.registration-page {
  width: min(100%, 28rem);
  margin: 0 auto;
}

.registration-page:has(.registration-page__pitch-pane) {
  width: min(100%, 56rem);
}

.registration-page__back {
  margin: 0 0 0.75rem;
}

.registration-page__group {
  display: grid;
  grid-template-columns: 1fr;
  width: 100%;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
}

@media (min-width: 640px) {
  .registration-page__group:has(.registration-page__pitch-pane) {
    grid-template-columns: 1fr 1fr;
  }
}

.registration-page__group > .registration-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100%;
  margin: 0;
  padding: 2rem 1.75rem;
  border: none;
  border-radius: 0;
  box-shadow: none;
  background: transparent;
  box-sizing: border-box;
}

@media (min-width: 640px) {
  .registration-page__group > .registration-panel {
    padding: 2.5rem 2rem;
  }
}

.registration-page__group .registration-panel__title.panel__title {
  margin-bottom: 0.5rem;
  font-size: 1.35rem;
  text-align: center;
}

.registration-page__group .registration-panel__lead {
  text-align: center;
}

.registration-page__pitch-pane {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
  padding: 2rem 1.75rem;
  background: var(--surface-muted);
  border-top: 1px solid var(--border);
}

@media (min-width: 640px) {
  .registration-page__pitch-pane {
    padding: 2.5rem 2rem;
    border-top: none;
    border-left: 1px solid var(--border);
  }
}

.registration-page__intro {
  max-width: none;
}

.registration-intro__title {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.registration-intro__lead {
  margin: 0 0 1.25rem;
  color: var(--ink-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.registration-intro__features {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.registration-intro__features li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--ink);
}

.registration-intro__icon {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  margin-top: 0.05rem;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent);
}

.registration-panel__rebrand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
}

.registration-panel__rebrand-logo {
  display: block;
  width: auto;
  max-width: 7.5rem;
  height: auto;
}

.registration-panel__rebrand-text {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.85rem;
  line-height: 1.3;
  text-align: center;
}

.registration-page__group .registration-panel__brand {
  display: flex;
  justify-content: center;
  margin: 0 0 1rem;
}

.registration-page__group .registration-panel__brand .brand {
  font-size: 1rem;
}

.registration-page__group .registration-panel__divider {
  width: 100%;
  max-width: 12rem;
  margin: 0 auto 1.25rem;
  border: none;
  border-top: 1px solid var(--border);
}

.registration-panel__lead {
  margin: -0.35rem 0 1.25rem;
  color: var(--ink-muted);
  font-size: 0.95rem;
  line-height: 1.45;
}

.registration-panel form.registration-form {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.registration-panel form.registration-form .field {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0;
}

.registration-panel form.registration-form .field label {
  margin-bottom: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--ink);
}

.registration-panel form.registration-form .field :is(input, select, textarea):not([type="checkbox"]):not([type="radio"]):not([type="hidden"]):not([type="submit"]):not([type="button"]) {
  width: 100%;
  min-height: calc(var(--control-padding-y) * 2 + 1.25rem);
  padding: var(--control-padding-y) var(--control-padding-x);
  border: 1px solid var(--control-border);
  border-radius: var(--control-radius);
  background-color: var(--control-bg);
  color: var(--ink);
  font-family: var(--pico-font-family);
  font-size: var(--control-font-size);
  font-weight: 400;
  line-height: 1.25;
  box-shadow: none;
}

.registration-panel form.registration-form .field :is(input, select, textarea):not([type="checkbox"]):not([type="radio"]):focus {
  border-color: var(--accent);
  outline: none;
  box-shadow: var(--focus-ring);
}

.registration-panel .field-errors {
  margin: 0.375rem 0 0;
  padding: 0;
  list-style-type: none;
  color: var(--error-ink);
  font-size: 0.75rem;
  line-height: 1.35;
}

.registration-panel .field-errors li {
  list-style-type: none;
}

.registration-panel .field-errors li + li {
  margin-top: 0.25rem;
}

.registration-panel .field--invalid input {
  border-color: var(--error-border);
}

.registration-panel .field--invalid input:focus {
  border-color: var(--error-border);
  box-shadow: var(--error-ring);
}

.registration-panel .field-help--rules {
  margin: 0 0 0.375rem;
  color: var(--ink-muted);
  font-size: 0.75rem;
  line-height: 1.35;
}

.registration-panel .field-help--rules ul {
  margin: 0.25rem 0 0;
  padding-left: 1.1rem;
}

.registration-panel .form-errors {
  margin: 0 0 1rem;
  list-style-type: none;
  font-size: 0.8125rem;
}

.registration-panel .form-errors li {
  list-style-type: none;
}

.registration-panel form.registration-form .btn-primary {
  width: 100%;
}

.registration-panel__footer {
  margin: 1.25rem 0 0;
  text-align: center;
  font-size: 0.9rem;
}