.study-dialog {
  width: min(960px, calc(100% - 32px));
  max-height: min(90vh, 900px);
  padding: 0;
  border: 0;
  border-radius: var(--radius-lg);
  background: transparent;
  box-shadow: none;
}

.study-dialog::backdrop {
  background: rgba(6, 17, 31, 0.72);
  backdrop-filter: blur(4px);
}

.study-dialog-panel {
  overflow: auto;
  max-height: min(90vh, 900px);
  color: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-raised);
  box-shadow: var(--shadow-md);
}

.study-dialog-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 28px 18px;
  border-bottom: 1px solid var(--line);
}

.study-dialog-header h2 {
  margin: 0;
  font-size: clamp(1.35rem, 2.4vw, 1.7rem);
}

.study-dialog-close {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: var(--radius-sm);
  color: var(--ink-700);
  background: var(--surface-soft);
  font-size: 1.5rem;
  line-height: 1;
}

.study-dialog-close:hover {
  color: var(--ink-950);
  background: var(--line);
}

.study-dialog-body {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 0;
}

.study-summary {
  padding: 24px 28px 28px;
  background: var(--surface-soft);
  border-right: 1px solid var(--line);
}

.study-summary-intro {
  margin-bottom: 16px;
  color: var(--ink-700);
  font-size: 0.92rem;
  font-weight: 600;
}

.study-summary-list {
  display: grid;
  gap: 10px;
  margin: 0;
}

.study-summary-list div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 0.86rem;
}

.study-summary-list div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.study-summary-list dt {
  color: var(--ink-600);
}

.study-summary-list dd {
  margin: 0;
  color: var(--ink-950);
  font-weight: 700;
  text-align: right;
}

.study-summary-warning {
  margin: 16px 0 0;
  padding: 12px;
  color: var(--warning);
  border-left: 3px solid #e3a329;
  border-radius: 6px;
  background: var(--warning-bg);
  font-size: 0.8rem;
}

.study-form {
  padding: 24px 28px 28px;
}

.study-form-intro {
  margin-bottom: 18px;
  color: var(--ink-600);
  font-size: 0.9rem;
}

.quote-hint {
  padding: 11px 13px;
  margin-bottom: 12px;
  color: var(--ink-700);
  border-left: 3px solid var(--green-600);
  border-radius: 6px;
  background: var(--green-100);
  font-size: 0.82rem;
}

.contact-shell-simple {
  grid-template-columns: 1fr;
  max-width: 720px;
}

.contact-actions {
  margin: 28px 0 8px;
}

body.study-open {
  overflow: hidden;
}

@media (max-width: 860px) {
  .study-dialog-body {
    grid-template-columns: 1fr;
  }

  .study-summary {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .study-dialog-header,
  .study-summary,
  .study-form {
    padding-inline: 20px;
  }
}