/* 記事内アンケート（survey.js と一緒に読み込む） */
.ai-survey {
  margin: 56px 0 8px;
  padding: 28px 28px 24px;
  background: var(--surface, #f0ece5);
  border-top: 2px solid var(--accent, #a8412a);
  font-family: var(--sans, sans-serif);
  color: var(--body, #403a33);
}
.ai-survey .ai-survey-title {
  margin: 0 0 14px;
  font: 700 1.125rem/1.7 var(--serif, serif);
  color: var(--ink, #28241f);
}
.ai-survey .ai-survey-lead {
  margin: 0 0 14px;
  font-size: .9375rem;
  line-height: 2;
}
.ai-survey fieldset {
  margin: 0 0 18px;
  padding: 0;
  border: 0;
  display: grid;
  gap: 8px;
}
.ai-survey-choice {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--paper, #f8f6f2);
  border: 1px solid var(--rule, #ddd6cc);
  border-radius: 6px;
  font-size: .9375rem;
  line-height: 1.6;
  cursor: pointer;
}
.ai-survey-choice:has(input:checked) {
  border-color: var(--accent, #a8412a);
  box-shadow: inset 0 0 0 1px var(--accent, #a8412a);
}
.ai-survey-choice input {
  width: 20px;
  height: 20px;
  margin: 0;
  flex: none;
  accent-color: var(--accent, #a8412a);
}
.ai-survey-field {
  display: grid;
  gap: 6px;
  margin-bottom: 16px;
}
.ai-survey-field label {
  font-weight: 700;
  font-size: .9375rem;
  color: var(--ink, #28241f);
}
.ai-survey-field textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border: 1px solid var(--rule, #ddd6cc);
  border-radius: 6px;
  background: var(--paper, #f8f6f2);
  font: inherit;
  font-size: 1rem; /* iOS で入力時に拡大されないよう 16px 以上 */
  line-height: 1.7;
  resize: vertical;
}
.ai-survey-submit {
  display: block;
  width: 100%;
  min-height: 48px;
  padding: 10px 16px;
  border: 0;
  border-radius: 6px;
  background: var(--accent, #a8412a);
  color: #fff;
  font: 700 1rem/1.4 var(--sans, sans-serif);
  cursor: pointer;
}
.ai-survey-submit:disabled {
  background: #c9bfb4;
  cursor: not-allowed;
}
.ai-survey-note {
  margin: 12px 0 0;
  font-size: .8125rem;
  line-height: 1.8;
  color: var(--muted, #71695f);
}
.ai-survey-dev {
  color: var(--accent, #a8412a);
}
@media (min-width: 861px) {
  .ai-survey-submit { width: auto; min-width: 200px; }
}
.ai-measure-note {
  margin: 20px 0 0;
  font-size: .8125rem;
  line-height: 1.9;
  color: var(--muted, #71695f);
}
.ai-measure-note a { color: inherit; text-underline-offset: 4px; }

/* 最後の説明文だけ、選択肢との間を少し広げる */
.ai-survey .ai-survey-lead:last-of-type { margin-bottom: 20px; }