/* =============================================
   lab.pico.or.jp/report 記事を pico.or.jp/news/ で
   表示するときの本文用スタイル（.lab-content スコープ）

   元ネタ：lab.pico.or.jp/report/common/style.css
   - 本文に必要なクラスのみを抜粋
   - すべて .lab-content の子孫として記述してスコープ化
   - lab/common/style.css の :root 変数は重複定義
   ============================================= */

.lab-content {
  /* lab記事用カラー変数（pico側の :root を汚さないようローカル定義） */
  --lab-primary-blue: #0097d3;
  --lab-primary-blue-dark: #007bb0;
  --lab-primary-blue-light: #e6f4fa;
  --lab-primary-orange: #FF6B35;
  --lab-primary-yellow: #FFD93D;
  --lab-accent-green: #7ED957;
  --lab-accent-pink: #FF6B9D;
  --lab-bg-white: #FFFFFF;
  --lab-bg-light: #F8FAFB;
  --lab-bg-blue-light: #E6F4FA;
  --lab-text-dark: #2D3436;
  --lab-text-gray: #636E72;
  --lab-text-muted: #b2bec3;
  --lab-shadow-soft: 0 4px 20px rgba(0,0,0,0.08);

  max-width: 900px;
  margin: 0 auto;
  /* 横パディングは pico の <section> 側（24px）に任せる。
     ここで重ねると二重マージンで余白が肥大化するため 0。 */
  padding: 0;
}

/* ===== Hero Image ===== */
.lab-content .article__hero {
  margin: 2rem 0 0;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--lab-bg-blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
}
.lab-content .article__hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.lab-content .article__hero-placeholder {
  color: var(--lab-text-muted);
  font-size: 1rem;
  text-align: center;
}

/* ===== Article Header ===== */
.lab-content .article__header {
  padding: 2rem 0 1.5rem;
  border-bottom: 2px solid var(--lab-bg-blue-light);
  margin-bottom: 2.5rem;
}
.lab-content .article__category {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--lab-bg-blue-light);
  color: var(--lab-primary-blue);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.4rem 1.2rem;
  border-radius: 50px;
  margin-bottom: 1rem;
}
.lab-content .article__title {
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1.4;
  color: var(--lab-text-dark);
  margin-bottom: 1rem;
  letter-spacing: 0.03em;
}
.lab-content .article__meta {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}
.lab-content .article__date {
  font-size: 1rem;
  color: var(--lab-text-muted);
  font-weight: 500;
}
.lab-content .article__author {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  color: var(--lab-text-gray);
  font-weight: 700;
}
.lab-content .article__author-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--lab-accent-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

/* ===== Article Body ===== */
.lab-content .article__body {
  padding-bottom: 3rem;
}
.lab-content .article__body h2 {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--lab-text-dark);
  margin: 3rem 0 1.2rem;
  padding: 0.8rem 0 0.8rem 1.2rem;
  border-left: 5px solid var(--lab-primary-blue);
  line-height: 1.4;
  letter-spacing: 0.03em;
}
.lab-content .article__body h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--lab-text-dark);
  margin: 2.5rem 0 1rem;
  line-height: 1.5;
}
.lab-content .article__body p {
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 2.2;
  margin-bottom: 1.5rem;
  color: var(--lab-text-dark);
}
.lab-content .article__body img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 2rem 0;
  box-shadow: var(--lab-shadow-soft);
}
.lab-content .article__flyer {
  margin: 2rem 0;
}
.lab-content .article__flyer img {
  margin-bottom: 0.5rem;
}
.lab-content .article__flyer figcaption {
  text-align: center;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--lab-text-muted);
}
.lab-content .article__body ul,
.lab-content .article__body ol {
  margin: 1.2rem 0 1.5rem 1.5rem;
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 2.2;
}
.lab-content .article__body li {
  margin-bottom: 0.5rem;
}
.lab-content .article__body a {
  color: var(--lab-primary-blue);
  text-decoration: underline;
  text-decoration-color: rgba(0,151,211,0.3);
  text-underline-offset: 4px;
  font-weight: 700;
  transition: text-decoration-color 0.2s;
}
.lab-content .article__body a:hover {
  text-decoration-color: var(--lab-primary-blue);
}
.lab-content .article__body blockquote {
  margin: 2rem 0;
  padding: 1.5rem 1.8rem;
  background: var(--lab-bg-blue-light);
  border-left: 5px solid var(--lab-primary-blue);
  border-radius: 0 12px 12px 0;
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 2;
  color: var(--lab-text-dark);
}
.lab-content .article__body strong {
  color: var(--lab-primary-blue-dark);
  font-weight: 800;
}

/* ===== TOC ===== */
.lab-content .toc {
  background: var(--lab-bg-light);
  border: 2px solid #e0e6ea;
  border-radius: 16px;
  padding: 1.5rem 2rem;
  margin: 2rem 0 2.5rem;
}
.lab-content .toc__title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--lab-text-dark);
  margin-bottom: 0.8rem;
}
.lab-content .toc__list {
  list-style: none;
  counter-reset: toc;
  margin: 0;
  padding: 0;
}
.lab-content .toc__list li {
  counter-increment: toc;
  margin-bottom: 0.4rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid #e8ecef;
  font-size: 1rem;
  line-height: 1.8;
  padding-left: 1.5rem;
  text-indent: -1.5rem;
}
.lab-content .toc__list li:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}
.lab-content .toc__list li::before {
  content: counter(toc) '.';
  font-weight: 700;
  color: var(--lab-primary-blue);
  margin-right: 0.5rem;
  font-size: 0.95rem;
}
.lab-content .toc__list a {
  color: var(--lab-text-dark);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}
.lab-content .toc__list a:hover {
  color: var(--lab-primary-blue);
  text-decoration: underline;
}

/* ===== Info Box ===== */
.lab-content .info-box {
  background: #fff9e0;
  border: 2px solid var(--lab-primary-yellow);
  border-radius: 16px;
  padding: 1.5rem;
  margin: 2rem 0;
}
.lab-content .info-box__title {
  font-size: 1.1rem;
  font-weight: 800;
  color: #e67e22;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.lab-content .info-box p {
  font-size: 1.05rem;
  line-height: 2;
  margin-bottom: 0;
}
.lab-content .info-box p + p {
  margin-top: 0.8rem;
}
.lab-content .info-box__list {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
}
.lab-content .info-box__list li {
  font-size: 1.05rem;
  line-height: 2;
  padding-left: 0.8em;
  text-indent: -0.8em;
  margin-bottom: 0.3rem;
}
.lab-content .info-box__list li::before {
  content: '・';
  font-weight: 700;
}
.lab-content .info-box__list li strong {
  color: var(--lab-primary-blue-dark);
  font-weight: 800;
}

/* ===== Voice Cards ===== */
.lab-content .voices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin: 2rem 0;
}
.lab-content .voice-card {
  background: var(--lab-bg-white);
  border-radius: 16px;
  border: 2px solid #f0f0f0;
  padding: 1.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.lab-content .voice-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.lab-content .voice-card__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.lab-content .voice-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.lab-content .voice-card__name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--lab-text-dark);
  line-height: 1.4;
}
.lab-content .voice-card__name span {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--lab-text-muted);
}
.lab-content .voice-card__body {
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 2;
  color: var(--lab-text-dark);
}
.lab-content .voice-card__body strong {
  color: var(--lab-primary-blue-dark);
  font-weight: 800;
}
.lab-content .voice-card--blue .voice-card__icon { background: var(--lab-bg-blue-light); }
.lab-content .voice-card--blue { border-color: #b8e4f5; }
.lab-content .voice-card--green .voice-card__icon { background: #e8faf0; }
.lab-content .voice-card--green { border-color: #b8f0d0; }
.lab-content .voice-card--orange .voice-card__icon { background: #fff3e0; }
.lab-content .voice-card--orange { border-color: #ffd5b8; }
.lab-content .voice-card--pink .voice-card__icon { background: #fce4ec; }
.lab-content .voice-card--pink { border-color: #f8bbd0; }
.lab-content .voice-card--purple .voice-card__icon { background: #f3e5f5; }
.lab-content .voice-card--purple { border-color: #d1c4e9; }

/* ===== Survey Summary ===== */
.lab-content .survey-summary {
  background: var(--lab-bg-white);
  border: 2px solid var(--lab-primary-blue);
  border-radius: 16px;
  padding: 2rem;
  margin: 2rem 0;
}
.lab-content .survey-summary__title {
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--lab-primary-blue-dark);
  text-align: center;
  margin-bottom: 1.5rem;
}
.lab-content .survey-summary__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.lab-content .survey-stat {
  text-align: center;
  padding: 1rem 0.5rem;
  background: var(--lab-bg-blue-light);
  border-radius: 12px;
}
.lab-content .survey-stat__emoji {
  font-size: 2rem;
  margin-bottom: 0.3rem;
}
.lab-content .survey-stat__number {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--lab-primary-blue);
  line-height: 1.1;
}
.lab-content .survey-stat__number span {
  font-size: 1.4rem;
}
.lab-content .survey-stat__label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--lab-text-gray);
  line-height: 1.6;
  margin-top: 0.4rem;
}

/* ===== Instructor Card ===== */
.lab-content .instructor-card {
  display: flex;
  flex-direction: row;
  gap: 0;
  align-items: stretch;
  background: var(--lab-bg-blue-light);
  border: 2px solid #b8e4f5;
  border-radius: 12px;
  overflow: hidden;
  margin: 2rem 0;
  box-shadow: var(--lab-shadow-soft);
}
.lab-content .instructor-card__image {
  flex-shrink: 0;
  width: 42%;
}
.lab-content .instructor-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  margin: 0;
  border-radius: 0;
  box-shadow: none;
}
.lab-content .instructor-card__content {
  flex: 1;
  min-width: 0;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.lab-content .instructor-card__role {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--lab-accent-green);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.3rem 1rem;
  border-radius: 50px;
  margin-bottom: 0.8rem;
  align-self: flex-start;
}
.lab-content .instructor-card__name {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--lab-text-dark);
  margin-bottom: 0.3rem;
}
.lab-content .instructor-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--lab-primary-blue);
  margin-bottom: 1rem;
}
.lab-content .instructor-card__bio {
  font-size: 1rem;
  font-weight: 500;
  line-height: 2;
  color: var(--lab-text-dark);
  margin-bottom: 1rem;
}
.lab-content .instructor-card__quote {
  background: var(--lab-bg-white);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.9;
  color: var(--lab-text-dark);
}

/* ===== FAQ ===== */
.lab-content .faq {
  margin: 2rem 0;
}
.lab-content .faq__item {
  border: 2px solid #e0e6ea;
  border-radius: 12px;
  margin-bottom: 0.8rem;
  overflow: hidden;
  transition: border-color 0.2s;
}
.lab-content .faq__item[open] {
  border-color: var(--lab-primary-blue);
}
.lab-content .faq__question {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--lab-text-dark);
  padding: 1.2rem 1.5rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  line-height: 1.6;
}
.lab-content .faq__question::-webkit-details-marker {
  display: none;
}
.lab-content .faq__question::before {
  content: 'Q';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--lab-primary-blue);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}
.lab-content .faq__answer {
  padding: 0 1.5rem 1.2rem 4rem;
  font-size: 1rem;
  font-weight: 500;
  line-height: 2;
  color: var(--lab-text-gray);
}
.lab-content .faq__answer a {
  color: var(--lab-primary-blue);
  font-weight: 700;
}

/* ===== CTA Box ===== */
.lab-content .cta-box {
  background: linear-gradient(135deg, var(--lab-bg-blue-light) 0%, #e8faf0 100%);
  border: 2px solid var(--lab-primary-blue);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  text-align: center;
  margin: 3rem 0;
}
.lab-content .cta-box__title {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--lab-primary-blue-dark);
  margin-bottom: 0.8rem;
}
.lab-content .cta-box__text {
  font-size: 1.05rem;
  color: var(--lab-text-gray);
  margin-bottom: 1.5rem;
  line-height: 2;
}
.lab-content .cta-box__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2.5rem;
  background: var(--lab-primary-blue);
  color: #fff !important;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 50px;
  text-decoration: none !important;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0,151,211,0.3);
}
.lab-content .cta-box__btn:hover {
  background: var(--lab-primary-blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,151,211,0.4);
}

/* ===== レスポンシブ ===== */
@media (max-width: 768px) {
  .lab-content { padding: 0; }
  .lab-content .article__title { font-size: 1.7rem; }
  .lab-content .article__body h2 { font-size: 1.5rem; }
  .lab-content .article__body h3 { font-size: 1.2rem; }
  .lab-content .article__body p { font-size: 1.05rem; }
  .lab-content .info-box { padding: 1rem 1.2rem; }
  .lab-content .info-box__list li { padding-left: 0.8em; text-indent: -0.8em; }
  .lab-content .toc { padding: 1rem 1.2rem; }
  .lab-content .toc__list li { padding-left: 1.2rem; text-indent: -1.2rem; font-size: 0.95rem; }
  .lab-content .cta-box { padding: 1.8rem 1.2rem; }
  .lab-content .cta-box__title { font-size: 1.3rem; }
  .lab-content .voices-grid { grid-template-columns: 1fr; gap: 16px; }
  .lab-content .voice-card { padding: 1.2rem; }
  .lab-content .survey-summary { padding: 1.5rem 1rem; }
  .lab-content .survey-summary__grid { gap: 0.8rem; }
  .lab-content .survey-stat__number { font-size: 2.2rem; }
  .lab-content .survey-stat__number span { font-size: 1.1rem; }
  .lab-content .survey-stat__label { font-size: 0.8rem; }
  .lab-content .instructor-card { flex-direction: column; }
  .lab-content .instructor-card__image { width: 100%; }
  .lab-content .instructor-card__image img { aspect-ratio: 4 / 3; object-position: center top; }
  .lab-content .instructor-card__content { padding: 1.5rem; }
  .lab-content .instructor-card__name { font-size: 1.5rem; }
  .lab-content .faq__question { padding: 0.9rem 1rem; font-size: 1rem; }
  .lab-content .faq__answer { padding: 0 1rem 1rem 3rem; }
  .lab-content .article__body img { margin: 1.5rem 0; }
}

/* ===== 一覧カードの lab記事用バッジ色は assets/css/style.css 側で定義 =====
   .news-cat-badge.lab-class（教室系：実験・生き物・工作） は style.css に。
   こちらに置くと一覧ページ（lab-content.css 未読込）でスタイルが効かないため。
   ============================================= */