.panel-card--hero {
  display: grid;
  gap: 18px;
}

.main-tab-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  width: 100%;
  padding: 12px;
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
}

.tab-button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 52px;
  border: 1px solid transparent;
  border-radius: 16px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: #4f6286;
  background: rgba(255,255,255,0.9);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.92);
  cursor: pointer;
  transition: all .18s ease;
}

.tab-button:hover {
  background: rgba(53,109,255,0.1);
  border-color: rgba(53,109,255,0.18);
  color: #284a98;
}

.tab-button.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  border-color: transparent;
  box-shadow: 0 10px 20px rgba(53,109,255,0.22);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.field-grid,
.checkbox-grid,
.accordion-list,
.history-list,
.terms-list {
  display: grid;
  gap: 16px;
}

.checkbox-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.72);
}

.checkbox-card input {
  margin: 0;
}

.button-row--compact > * {
  width: auto;
}

.direct-link-box {
  background: linear-gradient(180deg, rgba(238,243,255,0.9) 0%, rgba(255,255,255,0.9) 100%);
}

.details-card {
  border: 1px solid var(--border);
  border-radius: 20px;
  background: rgba(255,255,255,0.74);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.75);
  overflow: hidden;
}

.details-card[open] {
  box-shadow: var(--shadow-soft);
}

.details-summary--card {
  --details-action-width: 104px;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  font-weight: 800;
  color: #234ba9;
}

.details-summary--card::-webkit-details-marker {
  display: none;
}


.details-summary-main {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  flex: 1 1 auto;
}

.details-summary-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  flex-wrap: nowrap;
  justify-content: flex-end;
}

.details-summary-actions > * {
  width: var(--details-action-width);
  min-width: var(--details-action-width);
}

.details-copy-button {
  height: 42px;
  padding: 0 14px;
}

.details-card--static {
  overflow: visible;
}

.details-summary--static {
  cursor: default;
}

.details-body--static {
  padding-top: 0;
}

.details-toggle-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 14px;
  font-size: 15px;
  line-height: 1.2;
}

.details-toggle-label--open {
  display: none;
}

.details-card[open] .details-toggle-label--closed {
  display: none;
}

.details-card[open] .details-toggle-label--open {
  display: inline;
}

.details-body {
  padding: 0 16px 16px;
}

.history-box,
.terms-box {
  margin-top: 4px;
}

.terms-list section + section {
  padding-top: 8px;
  border-top: 1px solid rgba(217,225,240,0.8);
}

@media (max-width: 700px) {
  .main-tab-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    border-radius: 20px;
    padding: 10px;
  }

  .tab-button {
    min-height: 46px;
    padding: 10px 8px;
    font-size: 13px;
    white-space: nowrap;
  }

  .button-row--compact > * {
    width: 100%;
  }

  .inline-code-box {
    white-space: normal;
  }

  .details-summary--card {
    grid-template-columns: 1fr;
    padding: 14px 14px;
    align-items: flex-start;
  }

  .details-summary-main {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .details-summary-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
  }

  .details-summary-actions > * {
    width: 100%;
    min-width: 0;
  }

  .details-body {
    padding: 0 12px 12px;
  }
}

@media (max-width: 479px) {
  .main-tab-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
    padding: 8px;
  }

  .tab-button {
    min-height: 42px;
    padding: 8px 4px;
    font-size: 12px;
    letter-spacing: 0;
  }
}

@media (max-width: 399px) {
  .main-tab-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tab-button {
    min-height: 44px;
    padding: 9px 8px;
    font-size: 12px;
  }
}

@media (max-width: 319px) {
  .main-tab-list {
    grid-template-columns: 1fr;
  }
}


.history-entry + .history-entry {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(60, 72, 105, 0.12);
}

.history-item-list {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
}

.history-item-list li + li {
  margin-top: 0.35rem;
}