/* Research-use-only entry gate */
html.ruo-lock,
html.ruo-lock body {
  overflow: hidden;
}

html.ruo-lock body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  background: rgba(7, 22, 40, 0.82);
  background: color-mix(in srgb, var(--navy-deep, #071628) 82%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.ruo-gate {
  position: fixed;
  inset: 0;
  z-index: 2147483001;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  font-family: var(--sans, "Manrope", "Segoe UI", system-ui, sans-serif);
  color: var(--ink, #122033);
}

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

.ruo-gate .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;
}

.ruo-gate-panel {
  width: 100%;
  max-width: 480px;
  margin: auto;
  background: var(--card, #ffffff);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.ruo-gate-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 22px 24px;
  background: linear-gradient(135deg, var(--navy, #0a1f3d), var(--navy-deep, #071628));
  border-bottom: 3px solid var(--blue, #1f5fd6);
}

.ruo-gate-brand img {
  display: block;
  width: auto;
  height: 38px;
}

.ruo-gate-body {
  padding: 24px 26px 22px;
}

.ruo-gate-title {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--navy, #0a1f3d);
}

.ruo-gate-title:focus {
  outline: none;
}

.ruo-gate-intro {
  margin: 0 0 18px;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--muted, #5c6b80);
}

.ruo-gate fieldset {
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}

.ruo-label {
  display: block;
  margin: 0 0 8px;
  padding: 0;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink, #122033);
}

.ruo-dob-row {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 1fr;
  gap: 8px;
}

.ruo-dob-row select {
  width: 100%;
  min-height: 46px;
  appearance: none;
  -webkit-appearance: none;
  padding: 10px 30px 10px 12px;
  border: 1px solid var(--line, #e3ebf5);
  border-radius: 10px;
  background-color: #fff;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%235c6b80' d='M1.1 1.2 6 6.1l4.9-4.9 1.1 1.1L6 8.3 0 2.3z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 11px center;
  background-size: 10px 7px;
  font: inherit;
  font-size: 16px;
  color: var(--ink, #122033);
  cursor: pointer;
}

.ruo-gate select:focus-visible,
.ruo-gate input:focus-visible,
.ruo-gate button:focus-visible,
.ruo-gate a:focus-visible {
  outline: 3px solid var(--blue-light, #4d8cff);
  outline-offset: 2px;
}

.ruo-hint {
  min-height: 1.1em;
  margin: 6px 0 10px;
  font-size: 0.8rem;
  color: #b42318;
}

.ruo-checks {
  display: grid;
  gap: 8px;
}

.ruo-check {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 11px 12px;
  border: 1px solid var(--line, #e3ebf5);
  border-radius: 12px;
  background: var(--soft, #eef3f9);
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--ink, #122033);
  cursor: pointer;
}

.ruo-check input {
  flex: none;
  width: 18px;
  height: 18px;
  margin: 1px 0 0;
  accent-color: var(--blue, #1f5fd6);
  cursor: pointer;
}

.ruo-check a {
  color: var(--blue, #1f5fd6);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.ruo-notice {
  margin: 14px 0 16px;
  padding: 10px 12px;
  border-left: 3px solid var(--blue, #1f5fd6);
  background: var(--body, #f5f8fc);
  font-size: 0.76rem;
  line-height: 1.5;
  color: var(--muted, #5c6b80);
}

.ruo-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.ruo-enter,
.ruo-leave {
  min-height: 48px;
  padding: 0 20px;
  border-radius: 10px;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
}

.ruo-enter {
  border: 1px solid var(--blue, #1f5fd6);
  background: var(--blue, #1f5fd6);
  color: #fff;
}

.ruo-enter:hover:not(:disabled) {
  background: var(--blue-dark, #184eae);
  border-color: var(--blue-dark, #184eae);
}

.ruo-enter:disabled {
  border-color: var(--line, #e3ebf5);
  background: var(--soft, #eef3f9);
  color: #8995a6;
  cursor: not-allowed;
}

.ruo-leave {
  border: 1px solid var(--line, #e3ebf5);
  background: #fff;
  color: var(--muted, #5c6b80);
}

.ruo-leave:hover {
  color: var(--ink, #122033);
  border-color: var(--muted, #5c6b80);
}

.ruo-leave-solid {
  grid-column: 1 / -1;
}

@media (max-width: 520px), (max-height: 700px) {
  .ruo-gate {
    align-items: flex-start;
    padding: max(12px, env(safe-area-inset-top, 0px)) max(12px, env(safe-area-inset-right, 0px)) max(12px, env(safe-area-inset-bottom, 0px)) max(12px, env(safe-area-inset-left, 0px));
  }

  .ruo-gate-brand {
    padding: 16px;
  }

  .ruo-gate-brand img {
    height: 30px;
  }

  .ruo-gate-body {
    padding: 18px 16px 16px;
  }

  .ruo-dob-row {
    gap: 6px;
  }

  .ruo-dob-row select {
    padding: 10px 24px 10px 9px;
    background-position: right 8px center;
  }

  .ruo-check {
    font-size: 0.82rem;
  }
}

@media (max-width: 360px) {
  .ruo-dob-row {
    grid-template-columns: 1.25fr 0.85fr 1fr;
  }

  .ruo-actions {
    grid-template-columns: 1fr;
  }
}