/* ================================================
   ZETTA TECHNOLOGY - BIGDATA PAGE STYLESHEET
   データ活用塾ページ固有スタイル
   依存: style.css（ベーススタイル・共通コンポーネント）
   ================================================ */

#container {
  display: block;
  width: 100%;
}


/* ================================================
   PAGE NAV（アンカーメニュー）
   ================================================ */
.page-nav {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 68px;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.page-nav-list {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-nav-list::-webkit-scrollbar { display: none; }

.page-nav-link {
  display: block;
  padding: 18px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.page-nav-link:hover,
.page-nav-link.active {
  color: var(--brand-red);
  border-bottom-color: var(--brand-red);
}


/* ================================================
   SECTIONS COMMON
   ================================================ */
.bd-section {
  padding: 80px 0;
  scroll-margin-top: 120px;
}

.bd-section-alt {
  background: var(--brand-navy);
  padding: 80px 0;
  scroll-margin-top: 120px;
  position: relative;
  overflow: hidden;
}

.bd-section-alt::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,200,232,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,232,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.bd-section-alt .section-tag {
  color: var(--accent-cyan);
}

.bd-section-alt .section-tag::before {
  background: var(--accent-cyan);
}

.bd-section-alt .section-title {
  color: #fff;
}

.bd-section-alt .section-lead {
  color: rgba(255,255,255,0.7);
}

.section-header {
  margin-bottom: 48px;
}


/* ================================================
   イントロ（概要説明）
   ================================================ */
.bd-intro {
  padding: 56px 0 48px;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
}

.bd-intro-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  max-width: 820px;
}

.bd-intro-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.8;
  padding: 12px 16px;
  background: #fff;
  border-left: 3px solid var(--border);
  border-radius: 0 var(--radius) var(--radius) 0;
}


/* ================================================
   データサイエンティスト育成支援（m6）
   ================================================ */
.dsis-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.dsis-card-header {
  background: linear-gradient(135deg, var(--brand-navy) 0%, var(--brand-navy-light) 100%);
  padding: 32px 40px;
  position: relative;
}

.dsis-card-header::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,200,232,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,232,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.dsis-card-tag {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 1;
}

.dsis-card-tag::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--accent-cyan);
}

.dsis-card-title {
  font-family: var(--font-serif-ja);
  font-size: clamp(18px, 2.5vw, 26px);
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  position: relative;
  z-index: 1;
}

.dsis-card-body {
  padding: 32px 40px;
}

.dsis-card-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 28px;
}

.dsis-recommend-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--brand-navy);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dsis-recommend-label::before {
  content: '';
  display: block;
  width: 4px;
  height: 18px;
  background: var(--brand-red);
  border-radius: 2px;
}

.dsis-outline-img {
  display: block;
  max-width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.dsis-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
}

.dsis-cta {
  margin-top: 24px;
}


/* ================================================
   講座カードグリッド（共通）
   ================================================ */
.bd-course-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  position: relative;
  z-index: 1;
}

.bd-course-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 20px;
  transition: var(--transition);
  text-decoration: none;
  display: block;
  color: #fff;
}

.bd-course-card:hover {
  background: rgba(255,255,255,0.13);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.bd-course-card-num {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.bd-course-card-title {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  line-height: 1.5;
  margin-bottom: 10px;
}

.bd-course-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.bd-course-card ul li {
  font-size: 12px;
  color: rgba(255,255,255,0.65);
  line-height: 1.6;
  padding-left: 12px;
  position: relative;
}

.bd-course-card ul li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: rgba(255,255,255,0.3);
}

/* 静的（リンクなし）カード */
.bd-course-card-static {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  padding: 20px;
  color: rgba(255,255,255,0.5);
  font-size: 13px;
  line-height: 1.7;
}

/* 特大カード（書籍紹介など） */
.bd-course-card-book {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.bd-course-card-book img {
  flex-shrink: 0;
  width: 48px;
  height: auto;
  border-radius: 4px;
}

.bd-course-card-book-info {
  font-size: 12px;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
}

.bd-course-card-book-info a {
  color: var(--accent-cyan);
  text-decoration: none;
}

.bd-course-card-book-info a:hover {
  text-decoration: underline;
}


/* ================================================
   オープンデータ講座（m1）
   ================================================ */
.odk-intro {
  position: relative;
  z-index: 1;
  margin-bottom: 32px;
}

.odk-intro-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-cyan);
  text-decoration: none;
  transition: var(--transition);
}

.odk-intro-link:hover {
  opacity: 0.8;
  gap: 12px;
}

.odk-intro-link svg {
  flex-shrink: 0;
}


/* ================================================
   ビッグデータ活用講座（m2）
   ================================================ */
.bd-lecture-intro {
  display: flex;
  gap: 32px;
  margin-bottom: 40px;
  align-items: flex-start;
}

.bd-lecture-intro-cards {
  display: flex;
  gap: 12px;
  flex: 1;
}

.bd-lecture-intro-card {
  flex: 1;
  background: var(--brand-navy);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 20px;
  text-decoration: none;
  transition: var(--transition);
}

.bd-lecture-intro-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

.bd-lecture-intro-card .bd-course-card-title {
  color: #fff;
}


/* ================================================
   特別講座（m3）
   ================================================ */
.special-lecture-card {
  background: rgba(0,200,232,0.08);
  border: 1px solid rgba(0,200,232,0.2);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  z-index: 1;
}

.special-lecture-tag {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.special-lecture-tag::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--accent-cyan);
}

.special-lecture-title {
  font-family: var(--font-serif-ja);
  font-size: clamp(17px, 2vw, 22px);
  font-weight: 700;
  color: #fff;
  line-height: 1.5;
  margin-bottom: 8px;
}

.special-lecture-author {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 24px;
  line-height: 1.6;
}

.special-lecture-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.special-lecture-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  transition: var(--transition);
}

.special-lecture-link:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
}


/* ================================================
   ビッグデータ活用事例（m4）
   ================================================ */
.bd-case-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.bd-case-item {
  display: flex;
  align-items: flex-start;
  gap: 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.bd-case-item:last-child {
  border-bottom: none;
}

.bd-case-item:hover {
  background: var(--bg-section);
}

.bd-case-company {
  width: 180px;
  min-width: 180px;
  padding: 20px 24px;
  font-size: 13px;
  font-weight: 700;
  color: var(--brand-navy);
  border-right: 1px solid var(--border);
  background: var(--bg-section);
  display: flex;
  align-items: center;
  line-height: 1.5;
}

.bd-case-content {
  padding: 20px 24px;
  flex: 1;
}

.bd-case-content a {
  font-size: 14px;
  color: var(--brand-red);
  text-decoration: none;
  line-height: 1.7;
  transition: var(--transition);
}

.bd-case-content a:hover {
  text-decoration: underline;
  color: var(--brand-red-dark);
}

.bd-case-content-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.bd-case-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.bd-case-link {
  font-size: 13px !important;
  color: var(--brand-red) !important;
  text-decoration: none;
  padding: 2px 0;
  border-bottom: 1px solid rgba(153,0,0,0.2);
  transition: var(--transition);
}

.bd-case-link:hover {
  border-bottom-color: var(--brand-red);
}


/* ================================================
   データ活用 閲覧室（m5）
   ================================================ */
.bd-library-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  z-index: 1;
}

.bd-library-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 20px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  text-decoration: none;
  transition: var(--transition);
}

.bd-library-item:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--accent-cyan);
  transform: translateX(4px);
}

.bd-library-item-icon {
  width: 28px;
  height: 28px;
  background: rgba(0,200,232,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent-cyan);
  margin-top: 1px;
}

.bd-library-item-text {
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  line-height: 1.6;
}

.bd-library-item-sub {
  display: block;
  font-size: 12px;
  color: rgba(255,255,255,0.45);
  margin-top: 2px;
}


/* ================================================
   AWS活用（m7）
   ================================================ */
.aws-intro {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 32px;
  max-width: 820px;
}

.aws-playlist-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--brand-red);
  text-decoration: none;
  padding: 12px 20px;
  border: 2px solid var(--brand-red);
  border-radius: var(--radius);
  margin-bottom: 28px;
  transition: var(--transition);
}

.aws-playlist-link:hover {
  background: var(--brand-red);
  color: #fff;
}

.aws-video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.aws-video-thumb {
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.aws-video-thumb:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-red);
}

.aws-video-thumb img {
  display: block;
  width: 100%;
  height: auto;
}

.aws-credit {
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-light);
}

.aws-credit a {
  color: var(--brand-red);
  text-decoration: none;
}

.aws-credit a:hover {
  text-decoration: underline;
}


/* ================================================
   RESPONSIVE
   ================================================ */
@media (max-width: 1024px) {
  .bd-course-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .aws-video-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .bd-section,
  .bd-section-alt {
    padding: 56px 0;
  }

  .bd-course-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .dsis-card-header,
  .dsis-card-body {
    padding: 24px;
  }

  .bd-case-item {
    flex-direction: column;
  }

  .bd-case-company {
    width: 100%;
    min-width: unset;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 12px 20px;
  }

  .aws-video-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-nav-link {
    padding: 14px 12px;
    font-size: 12px;
  }

  .special-lecture-links {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .bd-course-grid {
    grid-template-columns: 1fr;
  }
}


/* ================================================
   LECTURE DETAIL PAGES（l_000_top, l_00〜l_03 共通）
   ================================================ */

/* ---- ページレイアウト ---- */
.lec-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 40px;
  align-items: flex-start;
  padding: 56px 0 80px;
}

/* ---- サイドナビ ---- */
.lec-sidenav {
  position: sticky;
  top: 120px;
}

.lec-sidenav-inner {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.lec-sidenav-head {
  background: var(--brand-navy);
  padding: 16px 20px;
}

.lec-sidenav-head-label {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent-cyan);
  margin-bottom: 4px;
  text-transform: uppercase;
}

.lec-sidenav-head-title {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
}

.lec-sidenav-list {
  padding: 8px 0;
}

.lec-sidenav-item {
  display: block;
  padding: 10px 20px;
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  line-height: 1.5;
  border-left: 3px solid transparent;
  transition: var(--transition);
}

.lec-sidenav-item:hover, .lec-sidenav-item.active {
  background: var(--bg-white);
  color: var(--brand-red);
  border-left-color: var(--brand-red);
  padding-left: 23px;
}

.lec-sidenav-item.current {
  background: rgba(153,0,0,0.05);
  color: var(--brand-red);
  border-left-color: var(--brand-red);
  font-weight: 700;
}

/* ---- 本文エリア ---- */
.lec-main {}

/* ---- 講座見出し（H1） ---- */
.lec-title-block {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--border);
}

.lec-title-eyebrow {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--brand-red);
  text-transform: uppercase;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.lec-title-eyebrow::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--brand-red);
}

.lec-title-main {
  font-family: var(--font-serif-ja);
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 700;
  color: var(--brand-navy);
  line-height: 1.45;
  margin-bottom: 8px;
}

.lec-title-sub {
  font-size: 15px;
  color: var(--text-light);
  font-weight: 400;
}

/* ---- セクションブロック ---- */
.lec-section {
  margin-bottom: 40px;
  scroll-margin-top: 120px;
}

.lec-section-title {
  font-family: var(--font-serif-ja);
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 700;
  color: var(--brand-navy);
  line-height: 1.5;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.lec-section-title-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--brand-navy);
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 12px;
  font-family: var(--font-en);
  font-weight: 700;
  margin-top: 2px;
}

.lec-section-subtitle {
  font-size: 16px;
  font-weight: 700;
  color: var(--brand-navy);
  margin: 24px 0 10px;
  padding-left: 12px;
  border-left: 3px solid var(--brand-red);
  line-height: 1.5;
}

.lec-body {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
}

.lec-body p {
  margin-bottom: 16px;
}

.lec-body p:last-child {
  margin-bottom: 0;
}

.lec-body strong {
  color: var(--brand-navy);
  font-weight: 700;
}

.lec-body em {
  color: var(--brand-red);
  font-style: normal;
  font-weight: 700;
}

.lec-body a {
  color: var(--brand-red);
  text-decoration: none;
  border-bottom: 1px solid rgba(153,0,0,0.25);
  transition: var(--transition);
}

.lec-body a:hover {
  border-bottom-color: var(--brand-red);
}

/* ---- 図版（右フロート） ---- */
.lec-figure {
  float: right;
  margin: 4px 0 20px 28px;
  clear: right;
}

.lec-figure img {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: block;
  max-width: 220px;
}

.lec-figure figcaption {
  font-size: 11px;
  color: var(--text-light);
  margin-top: 4px;
  text-align: center;
}

/* 中央配置の図版 */
.lec-figure-center {
  text-align: center;
  margin: 24px 0;
  clear: both;
}

.lec-figure-center img {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  max-width: 100%;
  display: inline-block;
}

.lec-figure-center figcaption {
  font-size: 11px;
  color: var(--text-light);
  margin-top: 6px;
}

/* ---- 年表・時系列テーブル ---- */
.lec-timeline-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

.lec-timeline-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-light);
  vertical-align: top;
  line-height: 1.7;
  color: var(--text-secondary);
}

.lec-timeline-table td:first-child {
  width: 110px;
  font-family: var(--font-en);
  font-weight: 700;
  color: var(--brand-navy);
  white-space: nowrap;
  background: var(--bg-section);
}

.lec-timeline-table tr:last-child td {
  border-bottom: none;
}

/* ---- データ分析テーブル ---- */
.lec-data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 13px;
}

.lec-data-table th {
  padding: 10px 14px;
  background: var(--brand-navy);
  color: #fff;
  font-weight: 700;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.1);
  vertical-align: middle;
}

.lec-data-table td {
  padding: 10px 14px;
  border: 1px solid var(--border);
  vertical-align: middle;
  line-height: 1.6;
  color: var(--text-secondary);
}

.lec-data-table tr:nth-child(even) td {
  background: var(--bg-section);
}

.lec-data-table td:first-child {
  font-weight: 700;
  color: var(--brand-navy);
  text-align: center;
  background: var(--bg-section);
}

/* ---- ハイライトボックス ---- */
.lec-highlight {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-left: 4px solid var(--brand-red);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 18px 24px;
  margin: 20px 0;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.lec-highlight-title {
  font-weight: 700;
  color: var(--brand-navy);
  margin-bottom: 8px;
  font-size: 14px;
}

/* ---- 番号付きリスト ---- */
.lec-list-num {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px 16px 36px;
  margin: 12px 0;
  background: var(--bg-section);
}

.lec-list-num li {
  list-style-type: decimal;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 4px;
}

.lec-list-num li:last-child {
  margin-bottom: 0;
}

/* ---- 箇条書きリスト ---- */
.lec-list-disc {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px 16px 36px;
  margin: 12px 0;
  background: var(--bg-section);
}

.lec-list-disc li {
  list-style-type: disc;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 4px;
}

.lec-list-disc li:last-child {
  margin-bottom: 0;
}

/* ---- PPDACラベル ---- */
.lec-ppdac-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--brand-navy);
  color: #fff;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 8px;
  font-family: var(--font-en);
  letter-spacing: 0.04em;
}

/* ---- コードブロック ---- */
.lec-code {
  background: var(--brand-navy);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 16px 0;
  overflow-x: auto;
}

.lec-code pre {
  font-family: 'Courier New', monospace;
  font-size: 13px;
  color: var(--accent-cyan);
  line-height: 1.7;
  white-space: pre-wrap;
  margin: 0;
}

/* ---- 動画リストボックス ---- */
.lec-video-box {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 16px 0;
}

.lec-video-box-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--brand-navy);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.lec-video-box-title svg {
  color: var(--brand-red);
}

.lec-video-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.lec-video-list li a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--brand-red);
  text-decoration: none;
  padding: 5px 0;
  transition: var(--transition);
  border-bottom: none;
}

.lec-video-list li a:hover {
  color: var(--brand-red-dark);
  padding-left: 4px;
}

.lec-video-list li a::before {
  content: '▶';
  font-size: 10px;
  color: var(--brand-red);
  flex-shrink: 0;
}

/* ---- 動画埋め込み ---- */
.lec-video-embed {
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  margin: 16px 0;
  text-align: center;
}

.lec-video-embed iframe {
  display: block;
  width: 100%;
  max-width: 560px;
  height: 315px;
  margin: 0 auto;
}

/* ---- 参考URLリスト ---- */
.lec-ref-list {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 16px 0;
}

.lec-ref-title {
  font-size: 12px;
  font-weight: 700;
  font-family: var(--font-en);
  letter-spacing: 0.1em;
  color: var(--text-light);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.lec-ref-item {
  display: block;
  font-size: 13px;
  color: var(--brand-red);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 1px solid var(--border-light);
  line-height: 1.6;
  transition: var(--transition);
}

.lec-ref-item:last-child {
  border-bottom: none;
}

.lec-ref-item:hover {
  color: var(--brand-red-dark);
  padding-left: 4px;
}

/* ---- まとめカード ---- */
.lec-summary-card {
  background: var(--brand-navy);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin: 32px 0;
  position: relative;
  overflow: hidden;
}

.lec-summary-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,200,232,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,232,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.lec-summary-title {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent-cyan);
  margin-bottom: 14px;
  text-transform: uppercase;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 8px;
}

.lec-summary-title::before {
  content: '';
  display: block;
  width: 16px;
  height: 2px;
  background: var(--accent-cyan);
}

.lec-summary-list {
  list-style: none;
  padding: 0;
  margin: 0;
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lec-summary-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  line-height: 1.7;
}

.lec-summary-list li::before {
  content: '';
  display: block;
  width: 18px;
  height: 18px;
  background: rgba(0,200,232,0.2);
  border: 1px solid var(--accent-cyan);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 2px;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 10 10' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M2 5l2.5 2.5L8 3' stroke='%2300c8e8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

/* ---- 前後ページャー ---- */
.lec-pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 0 0;
  border-top: 1px solid var(--border);
  margin-top: 40px;
  gap: 12px;
  flex-wrap: wrap;
}

.lec-pager-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
  border: 2px solid var(--border);
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.lec-pager-btn:hover {
  border-color: var(--brand-red);
  color: var(--brand-red);
  background: rgba(153,0,0,0.04);
}

/* ---- 目次リスト（l_000_top用） ---- */
.lec-toc-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.lec-toc-item {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

.lec-toc-item:last-child {
  border-bottom: none;
}

.lec-toc-item:hover {
  background: var(--bg-section);
}

.lec-toc-item:hover .lec-toc-num {
  background: var(--brand-red);
}

.lec-toc-num {
  width: 72px;
  min-width: 72px;
  background: var(--brand-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  color: rgba(255,255,255,0.7);
  text-align: center;
  line-height: 1.3;
  padding: 12px 8px;
  transition: var(--transition);
  flex-direction: column;
  gap: 2px;
}

.lec-toc-num span {
  color: var(--accent-cyan);
  font-size: 14px;
}

.lec-toc-body {
  padding: 16px 20px;
  flex: 1;
}

.lec-toc-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--brand-navy);
  margin-bottom: 4px;
  line-height: 1.4;
}

.lec-toc-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.lec-toc-arrow {
  display: flex;
  align-items: center;
  padding: 0 16px;
  color: var(--text-light);
  transition: var(--transition);
}

.lec-toc-item:hover .lec-toc-arrow {
  color: var(--brand-red);
  transform: translateX(3px);
}

/* ---- ウェルカムカード（l_000_top用） ---- */
.lec-welcome-card {
  background: linear-gradient(135deg, var(--brand-navy) 0%, var(--brand-navy-light) 100%);
  border-radius: var(--radius-lg);
  padding: 32px 40px;
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
}

.lec-welcome-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,200,232,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,232,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.lec-welcome-card-tag {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent-cyan);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 1;
  text-transform: uppercase;
}

.lec-welcome-card-tag::before {
  content: '';
  display: block;
  width: 16px;
  height: 2px;
  background: var(--accent-cyan);
}

.lec-welcome-card-title {
  font-family: var(--font-serif-ja);
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.lec-welcome-card-body {
  font-size: 14px;
  color: rgba(255,255,255,0.8);
  line-height: 1.9;
  position: relative;
  z-index: 1;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .lec-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .lec-sidenav {
    position: static;
    order: -1;
  }

  .lec-sidenav-inner {
    display: grid;
    grid-template-columns: auto 1fr;
  }

  .lec-sidenav-head {
    writing-mode: initial;
    grid-row: 1;
    grid-column: 1 / -1;
  }

  .lec-sidenav-list {
    display: flex;
    flex-wrap: wrap;
    padding: 8px;
    gap: 4px;
  }

  .lec-sidenav-item {
    padding: 8px 14px;
    border-left: none;
    border-radius: var(--radius);
    border: 1px solid var(--border);
  }

  .lec-sidenav-item.current {
    background: rgba(153,0,0,0.08);
    border-color: var(--brand-red);
  }

  .lec-sidenav-item:hover {
    padding-left: 14px;
    border-color: var(--brand-red);
  }
}

@media (max-width: 768px) {
  .lec-layout {
    padding: 36px 0 60px;
  }

  .lec-figure {
    float: none;
    margin: 16px 0;
  }

  .lec-figure img {
    max-width: 100%;
  }

  .lec-video-embed iframe {
    height: 240px;
  }

  .lec-pager {
    flex-direction: column;
    align-items: stretch;
  }

  .lec-pager-btn {
    justify-content: center;
  }

  .lec-welcome-card {
    padding: 24px;
  }

  .lec-toc-num {
    width: 56px;
    min-width: 56px;
  }
}


/* ================================================
   SIDENAV MENU（/_inc/bigdata/menu.html 対応）
   .lec-sidenav-list 内の <ul><li> をデザイン統一
   ================================================ */

/* ---- リスト基本リセット ---- */
.lec-sidenav-list ul {
  list-style: none;
  padding: 8px 0;
  margin: 0;
}

/* ---- 通常リンク <li><a> ---- */
a.a_o_m {
  display: block;
  padding: 9px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  line-height: 1.5;
  border-left: 3px solid transparent;
  transition: var(--transition);
}

a.a_o_m:hover, a.a_o_m.active{
  background: #fff;
  color: var(--brand-red);
  border-left-color: var(--brand-red);
  padding-left: 23px;
}

/* ---- セクション見出し <li>（リンクなし・テキストのみ） ---- */
.lec-sidenav-list ul li:not(:has(a)):not(:has(div)) {
  padding: 10px 20px 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  font-family: var(--font-en);
  line-height: 1.4;
  background: var(--brand-navy);
  margin-top: 4px;
}

/* ---- 区切り線 <li><div class="border_bottm"> ---- */
.lec-sidenav-list ul li:has(> div.border_bottm),
.lec-sidenav-list ul li:has(> div:only-child) {
  padding: 0;
  margin: 2px 0;
}

.lec-sidenav-list .border_bottm {
  border-bottom: 1px solid var(--border);
  margin: 4px 12px;
}

/* ---- 特別ブロック（サンプルデータ・相談・書籍など） ---- */
.lec-sidenav-list ul li:has(center) {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  margin-top: 4px;
}

/* リンクボタン（サンプルデータ・ご相談・ご意見箱） */
.lec-sidenav-list ul li center a[style*="font-size:15px"] {
  display: block;
  padding: 8px 12px;
  font-size: 12px !important;
  font-weight: 700;
  color: var(--brand-navy);
  text-decoration: none;
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  margin-bottom: 6px;
  transition: var(--transition);
  line-height: 1.4;
}

.lec-sidenav-list ul li center a[style*="font-size:15px"]:hover {
  background: var(--brand-red);
  color: #fff;
  border-color: var(--brand-red);
}

/* 説明テキスト */
.lec-sidenav-list ul li div[style*="font-size:11px"] {
  font-size: 11px !important;
  color: var(--text-light);
  line-height: 1.6;
  padding: 0 2px 6px;
  margin: 0 !important;
}

/* Z-Adamバナー */
.lec-sidenav-list ul li center img[src*="z-adam"] {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  display: block;
  margin: 0 auto;
}

/* 書籍サムネイル */
.lec-sidenav-list ul li center a[href*="goo.gl"] img,
.lec-sidenav-list ul li center a[href*="amazon"] img {
  max-width: 80px;
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--border);
  display: block;
  margin: 0 auto 4px;
}

/* 書籍テキスト */
.lec-sidenav-list ul li center a[href*="goo.gl"],
.lec-sidenav-list ul li center a[href*="amazon"] {
  font-size: 11px !important;
  color: var(--text-secondary);
  text-decoration: none;
  display: block;
  text-align: center;
  line-height: 1.6;
  border: none;
  padding: 0;
  background: none;
  border-radius: 0;
  font-weight: 400;
}

.lec-sidenav-list ul li center a[href*="goo.gl"]:hover,
.lec-sidenav-list ul li center a[href*="amazon"]:hover {
  color: var(--brand-red);
  background: none;
  border-color: transparent;
}

/* 書籍ブロック見出しリンク */
.lec-sidenav-list ul li center > a[style*="font-size:15px"][href*="goo.gl"] {
  font-size: 11px !important;
  font-weight: 700;
  color: var(--brand-navy);
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 10px;
  text-align: center;
  margin-bottom: 8px;
}

/* ================================================
   RESPONSIVE
   ================================================ */
@media (max-width: 1024px) {
  .lec-sidenav-list ul {
    display: flex;
    flex-wrap: wrap;
    padding: 8px;
    gap: 4px;
  }

  .lec-sidenav-list ul li a {
    padding: 7px 12px;
    border-left: none;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    white-space: nowrap;
  }

  .lec-sidenav-list ul li a:hover {
    padding-left: 12px;
    border-color: var(--brand-red);
  }

  /* モバイルでは特別ブロックと区切りを非表示 */
  .lec-sidenav-list ul li:has(center),
  .lec-sidenav-list ul li:has(> div.border_bottm),
  .lec-sidenav-list ul li:not(:has(a)):not(:has(div)) {
    display: none;
  }
}


/* ================================================
   講座詳細ページ（l_04〜l_08）共通スタイル
   ================================================ */

/* ---- セクション ---- */
.lec-section {
  margin-bottom: 56px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}

.lec-section:last-of-type {
  border-bottom: none;
}

.lec-section-eyebrow {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand-red);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.lec-section-eyebrow::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--brand-red);
}

.lec-section-title {
  font-family: var(--font-serif-ja);
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 700;
  color: var(--brand-navy);
  line-height: 1.4;
  margin-bottom: 24px;
}

.lec-section-body {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
}

.lec-section-body p {
  margin-bottom: 16px;
}

.lec-section-body p:last-child {
  margin-bottom: 0;
}

/* ---- h3 見出し ---- */
.lec-h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--brand-navy);
  margin: 28px 0 12px;
  padding-left: 12px;
  border-left: 3px solid var(--brand-red);
  line-height: 1.5;
}

/* ---- 手順リスト ---- */
.lec-steps {
  list-style: none;
  padding: 0;
  margin: 16px 0 24px;
  counter-reset: step-counter;
}

.lec-steps > li {
  counter-increment: step-counter;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.lec-steps > li:last-child {
  border-bottom: none;
}

.lec-steps > li::before {
  content: counter(step-counter);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  min-width: 24px;
  background: var(--brand-navy);
  color: #fff;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  border-radius: 50%;
  margin-top: 2px;
}

.lec-steps > li ul {
  margin: 8px 0 0 0;
  padding-left: 20px;
}

.lec-steps > li ul li {
  font-size: 13px;
  margin-bottom: 4px;
}

/* ---- コードブロック ---- */
.lec-code-block {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 16px 0;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.lec-code-block ul,
.lec-code-block ol {
  margin: 0;
  padding-left: 20px;
}

.lec-code-block li {
  margin-bottom: 4px;
}

/* ---- 数式・コード表示 ---- */
.lec-formula {
  background: var(--brand-navy);
  color: var(--accent-cyan);
  font-family: 'Courier New', Courier, monospace;
  font-size: 13px;
  padding: 12px 20px;
  border-radius: var(--radius);
  margin: 12px 0;
  line-height: 1.7;
  word-break: break-all;
}

/* ---- 情報ボックス ---- */
.lec-info-box {
  background: rgba(0, 100, 200, 0.04);
  border: 1px solid rgba(0, 100, 200, 0.12);
  border-left: 3px solid var(--brand-navy);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin: 16px 0;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.lec-info-box p {
  margin-bottom: 8px;
}

.lec-info-box ul,
.lec-info-box ol {
  margin: 4px 0;
  padding-left: 20px;
}

.lec-info-box li {
  margin-bottom: 4px;
}

/* ---- ノート ---- */
.lec-note {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
  padding: 10px 14px;
  background: var(--bg-section);
  border-left: 3px solid var(--border);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-top: 16px;
}

/* ---- 図（右フロート） ---- */
.lec-figure-right {
  float: right;
  margin: 0 0 20px 24px;
  max-width: 200px;
}

.lec-figure-right img {
  display: block;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.lec-figure-right::after {
  content: '';
  display: block;
  clear: both;
}

/* ---- 図（中央） ---- */
.lec-figure-center {
  text-align: center;
  margin: 20px 0;
  clear: both;
}

.lec-figure-center img {
  display: inline-block;
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 4px;
  vertical-align: top;
}

/* ---- テーブル ---- */
.lec-table-wrap {
  overflow-x: auto;
  margin: 20px 0;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.lec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  line-height: 1.6;
}

.lec-table th {
  background: var(--brand-navy);
  color: #fff;
  font-weight: 700;
  padding: 10px 14px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.1);
  white-space: nowrap;
}

.lec-table td {
  padding: 9px 14px;
  border: 1px solid var(--border);
  vertical-align: middle;
  color: var(--text-secondary);
}

.lec-table tr:nth-child(even) td {
  background: var(--bg-section);
}

/* ---- 動画インデックス ---- */
.lec-video-index {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 16px 0;
}

.lec-video-index-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.lec-video-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.lec-video-list li {
  border-bottom: 1px solid var(--border);
}

.lec-video-list li:last-child {
  border-bottom: none;
}

.lec-video-list li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 4px;
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.lec-video-list li a:hover {
  color: var(--brand-red);
  padding-left: 8px;
}

.lec-video-time {
  display: inline-block;
  min-width: 40px;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  color: var(--brand-red);
  background: rgba(153,0,0,0.06);
  border-radius: 4px;
  padding: 2px 6px;
  text-align: center;
  flex-shrink: 0;
}

/* ---- 動画埋め込み ---- */
.lec-video-embed {
  margin: 16px 0;
}

.lec-video-embed-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 10px;
}

.lec-video-embed iframe {
  display: block;
  max-width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

/* ---- リビール（スクロールアニメーション） ---- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- レスポンシブ ---- */
@media (max-width: 768px) {
  .lec-figure-right {
    float: none;
    margin: 16px 0;
    max-width: 100%;
  }

  .lec-figure-right img {
    max-width: 200px;
    margin: 0 auto;
  }

  .lec-formula {
    font-size: 12px;
    padding: 10px 14px;
  }

  .lec-steps > li {
    font-size: 13px;
  }

  .lec-video-embed iframe {
    height: 240px;
    width: 100%;
  }
}


/* ================================================
   RECOMMENDATION PAGE（recommendation.html）
   著者メッセージページ専用スタイル
   ================================================ */

/* ---- メッセージカード ---- */
.lec-message-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.lec-message-body {
  padding: 40px 48px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 2.0;
  font-family: var(--font-serif-ja);
  border-bottom: 1px solid var(--border);
}

.lec-message-body p {
  margin-bottom: 20px;
}

.lec-message-body p:last-child {
  margin-bottom: 0;
}

.lec-message-sig {
  padding: 24px 48px;
  text-align: right;
  background: var(--bg-section);
  font-family: var(--font-serif-ja);
}

.lec-message-sig-date {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 6px;
}

.lec-message-sig-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--brand-navy);
  letter-spacing: 0.08em;
}

@media (max-width: 768px) {
  .lec-message-body {
    padding: 28px 24px;
  }
  .lec-message-sig {
    padding: 20px 24px;
  }
}


/* ================================================
   SPECIAL LECTURE PAGES（sl_101〜sl_103）
   特別講座ページ専用スタイル
   ================================================ */

/* ---- 講演概要カード ---- */
.sl-event-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 8px;
}

/* ---- 講演写真ペア ---- */
.sl-event-photos {
  display: flex;
  gap: 4px;
  background: var(--brand-navy);
  padding: 4px;
}

.sl-event-photos img {
  flex: 1;
  width: 50%;
  height: 200px;
  object-fit: cover;
  border-radius: 2px;
  display: block;
}

/* ---- 登壇者クレジット ---- */
.sl-event-credit {
  padding: 12px 24px;
  font-size: 13px;
  color: var(--text-light);
  border-bottom: 1px solid var(--border);
  margin: 0;
  background: var(--bg-section);
}

/* ---- 講演概要テキスト ---- */
.sl-event-summary {
  padding: 20px 24px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.85;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
}

.sl-event-summary p {
  margin: 0;
}

/* ---- 登壇者プロフィール ---- */
.sl-speaker-profile {
  padding: 20px 24px;
}

.sl-speaker-profile-title {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-red);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sl-speaker-profile-title::before {
  content: '';
  display: block;
  width: 16px;
  height: 2px;
  background: var(--brand-red);
}

.sl-speaker-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--brand-navy);
  margin-bottom: 8px;
}

.sl-speaker-profile > p:not(.sl-speaker-name) {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

/* ---- プロフィールメタリスト ---- */
.sl-speaker-meta {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 12px;
}

.sl-speaker-meta li {
  display: flex;
  align-items: flex-start;
  gap: 0;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  line-height: 1.6;
}

.sl-speaker-meta li:nth-child(odd) {
  border-right: 1px solid var(--border);
}

.sl-speaker-meta li:nth-last-child(-n+2) {
  border-bottom: none;
}

.sl-speaker-meta li span {
  flex-shrink: 0;
  width: 72px;
  font-weight: 700;
  color: var(--brand-navy);
  font-size: 11px;
  padding-right: 8px;
}

/* ---- 連載ナビゲーション（前後編リンク） ---- */
.sl-series-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 32px 0;
  flex-wrap: wrap;
}

.sl-series-nav-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
  background: #fff;
}

.sl-series-nav-item:hover {
  border-color: var(--brand-red);
  color: var(--brand-red);
  background: rgba(153,0,0,0.03);
}

.sl-series-nav-item.current {
  background: var(--brand-navy);
  color: #fff;
  border-color: var(--brand-navy);
  font-weight: 700;
  pointer-events: none;
}

.sl-series-nav-sep {
  font-size: 12px;
  color: var(--text-light);
  padding: 0 2px;
}

/* ---- レスポンシブ ---- */
@media (max-width: 768px) {
  .sl-event-photos {
    flex-direction: column;
    gap: 2px;
  }
  .sl-event-photos img {
    width: 100%;
    height: 160px;
  }
  .sl-speaker-meta {
    grid-template-columns: 1fr;
  }
  .sl-speaker-meta li:nth-child(odd) {
    border-right: none;
  }
  .sl-speaker-meta li:nth-last-child(-n+2) {
    border-bottom: 1px solid var(--border);
  }
  .sl-speaker-meta li:last-child {
    border-bottom: none;
  }
}


/* ================================================
   OPEN DATA LECTURE PAGES（o_00, o_00s, o_01〜）
   オープンデータ活用講座 専用スタイル
   ================================================ */

/* ---- ページレイアウト（lec-layout と同構造） ---- */
.odk-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 40px;
  align-items: flex-start;
  padding: 56px 0 80px;
}

.odk-main {}

/* ---- ウェルカムカードのリンク ---- */
.lec-welcome-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-cyan);
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  transition: var(--transition);
}

.lec-welcome-card-link:hover {
  opacity: 0.8;
  gap: 10px;
}

/* ---- 目次グリッド（o_00 トップ用） ---- */
.odk-toc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 40px;
}

/* ---- 目次カード ---- */
.odk-toc-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.odk-toc-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--border);
  transition: var(--transition);
}

.odk-toc-card:hover {
  border-color: var(--brand-red);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.odk-toc-card:hover::before {
  background: var(--brand-red);
}

/* イントロカード（はじめに） */
.odk-toc-card--intro {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  gap: 20px;
  background: var(--bg-section);
  border-style: dashed;
}

.odk-toc-card--intro::before {
  background: var(--brand-navy);
}

.odk-toc-card--intro:hover {
  border-color: var(--brand-navy);
  border-style: solid;
}

.odk-toc-card--intro:hover::before {
  background: var(--brand-navy);
}

.odk-toc-card--intro .odk-toc-card-eyebrow {
  color: var(--brand-navy);
}

.odk-toc-card--intro .odk-toc-card-title {
  font-size: 16px;
}

.odk-toc-card--intro .odk-toc-card-list {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0 20px;
}

.odk-toc-card--intro .odk-toc-card-arrow {
  margin-top: 0;
  margin-left: auto;
  flex-shrink: 0;
}

/* カード内パーツ */
.odk-toc-card-eyebrow {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-red);
  margin-bottom: 6px;
}

.odk-toc-card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--brand-navy);
  line-height: 1.5;
  margin-bottom: 10px;
}

.odk-toc-card-list {
  list-style: none;
  padding: 0;
  margin: 0 0 12px;
  flex: 1;
}

.odk-toc-card-list li {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-left: 12px;
  position: relative;
}

.odk-toc-card-list li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--text-light);
}

.odk-toc-card-arrow {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-top: auto;
  color: var(--text-light);
  transition: var(--transition);
}

.odk-toc-card:hover .odk-toc-card-arrow {
  color: var(--brand-red);
  transform: translateX(3px);
}

/* ---- 画像ブロック（o_01 等の本文内画像） ---- */
.odk-image-block {
  margin: 24px 0;
  text-align: center;
  clear: both;
}

.odk-image-block img {
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: block;
  margin: 0 auto 10px;
}

.odk-image-caption {
  font-size: 12px;
  color: var(--text-light);
  line-height: 1.6;
  text-align: right;
  padding-right: 4px;
}

.odk-image-caption a {
  color: var(--text-light);
  text-decoration: none;
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

.odk-image-caption a:hover {
  color: var(--brand-red);
  border-bottom-color: var(--brand-red);
}

/* ---- SIDENAV メニュー（menu-open.html 対応） ---- */
/* lec-sidenav-list 内の <ul><li> をデザイン統一 */
.lec-sidenav-list ul {
  list-style: none;
  padding: 8px 0;
  margin: 0;
}

/* 通常リンク */
.lec-sidenav-list ul li a.a_o_m {
  display: block;
  padding: 9px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  line-height: 1.5;
  border-left: 3px solid transparent;
  transition: var(--transition);
}

.lec-sidenav-list ul li a.a_o_m:hover,
.lec-sidenav-list ul li a.a_o_m.active,
.lec-sidenav-list ul li a.a_o_m.a_m_home {
  background: #fff;
  color: var(--brand-red);
  border-left-color: var(--brand-red);
  padding-left: 23px;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .odk-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .odk-toc-grid {
    grid-template-columns: 1fr;
  }

  .odk-toc-card--intro {
    flex-direction: column;
    align-items: flex-start;
  }

  .odk-toc-card--intro .odk-toc-card-list {
    flex-direction: column;
  }

  .odk-toc-card--intro .odk-toc-card-arrow {
    align-self: flex-end;
  }
}

@media (max-width: 768px) {
  .odk-layout {
    padding: 36px 0 60px;
  }

  .odk-image-caption {
    text-align: left;
  }
}


/* ================================================
   OPEN DATA LECTURE — 本文ページ共通スタイル（o_02〜o_09）
   ================================================ */

/* ---- セクション小見出し（h2） ---- */
.lec-section-subtitle {
  font-family: var(--font-serif-ja);
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 700;
  color: var(--brand-navy);
  line-height: 1.5;
  margin: 28px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

/* ---- 中見出し（h3） ---- */
.lec-section-h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--brand-navy);
  margin: 22px 0 10px;
  padding-left: 12px;
  border-left: 3px solid var(--brand-red);
  line-height: 1.5;
}

/* ---- 小見出し（h4） ---- */
.lec-section-h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--brand-navy);
  margin: 18px 0 8px;
  padding-left: 10px;
  border-left: 2px solid var(--border);
  line-height: 1.5;
}

/* ---- 参照ボックス（※注釈） ---- */
.odk-note-item {
  position: relative;
  padding-left: 1.4em;
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 6px;
}

.odk-note-item::before {
  content: '※';
  position: absolute;
  left: 0;
  color: var(--brand-red);
  font-weight: 700;
}

/* li.liClass のスタイルを置換 */
li.liClass {
  position: relative;
  padding-left: 1.4em;
  list-style: none;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 4px;
}

li.liClass::before {
  content: "※";
  position: absolute;
  left: 0;
  color: var(--brand-red);
  font-weight: 700;
}

/* ---- データテーブル（旧 type01） ---- */
/* lec-data-table は bigdata.css に既存のため追記不要 */

/* ---- 画像ブロック（center 内の img） ---- */
/* odk-image-block は既存のため補足のみ */
.odk-image-block a {
  display: inline-block;
}

.odk-image-block a + a {
  margin-left: 8px;
}

.odk-image-block br {
  display: none;
}

/* ---- lec-body 内のリストスタイル ---- */
.lec-body ul.listdisc,
.lec-body ul[style*="list-style-type:disc"],
.lec-body ul[class*="listdisc"] {
  padding-left: 24px;
  margin: 10px 0;
}

.lec-body ul.listdisc li,
.lec-body ul[style*="list-style-type:disc"] li {
  list-style: disc;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 4px;
}

.lec-body ol[style*="padding"] li {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 8px;
}

/* ---- lec-body 内テーブルラッパー ---- */
.lec-body .lec-data-table {
  width: 100%;
  margin: 16px 0;
  overflow-x: auto;
}

/* テーブルが本文内にある場合のスクロール対応 */
.lec-body > table.lec-data-table,
.lec-section > table.lec-data-table {
  display: block;
  overflow-x: auto;
  max-width: 100%;
}

/* ---- lec-highlight の追加スタイル ---- */
.lec-highlight b {
  color: var(--brand-navy);
  font-weight: 700;
}

.lec-highlight ul {
  padding-left: 20px;
  margin: 6px 0;
}

.lec-highlight ul li {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
  list-style: disc;
  margin-bottom: 2px;
}

/* ---- リンクスタイル in lec-body ---- */
.lec-section a:not([class]),
.lec-body a:not([class]) {
  color: var(--brand-red);
  text-decoration: none;
  border-bottom: 1px solid rgba(153,0,0,0.2);
  transition: var(--transition);
}

.lec-section a:not([class]):hover,
.lec-body a:not([class]):hover {
  border-bottom-color: var(--brand-red);
}

/* ---- 下線強調（<u> タグ） ---- */
.lec-body u {
  text-decoration: none;
  border-bottom: 2px solid rgba(153,0,0,0.3);
  font-weight: 500;
}

/* ---- 数式・重要ボックス ---- */
.odk-formula-box {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-left: 4px solid var(--brand-navy);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin: 16px 0;
  font-size: 14px;
  color: var(--brand-navy);
  font-weight: 700;
  line-height: 1.8;
  text-align: center;
}

/* ---- 結論ブロック ---- */
.odk-conclusion {
  background: var(--brand-navy);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin: 24px 0;
  position: relative;
  overflow: hidden;
}

.odk-conclusion::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,200,232,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,232,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.odk-conclusion h3,
.odk-conclusion .lec-section-h3 {
  color: var(--accent-cyan) !important;
  border-left-color: var(--accent-cyan) !important;
  position: relative;
  z-index: 1;
  padding: 0 0 0 12px;
  font-size: 14px !important;
}

.odk-conclusion ul,
.odk-conclusion ol,
.odk-conclusion p {
  position: relative;
  z-index: 1;
  color: rgba(255,255,255,0.85);
  font-size: 14px;
  line-height: 1.8;
}

/* ---- responsive ---- */
@media (max-width: 768px) {
  .lec-section-subtitle {
    font-size: 17px;
  }

  .lec-body > table,
  .lec-section > table {
    font-size: 11px;
  }
}


/* ================================================
   データサイエンティスト育成支援サービス ページ (index.html)
   ================================================ */

/* ---- ヒーロー（ページタイトル）ブロック ---- */
.dsis-hero {
  background: linear-gradient(135deg, #e3e9ee 0%, #f7f9fb 100%);
  border-bottom: 1px solid var(--border);
  padding: 60px 0 48px;
}

.dsis-hero-eyebrow {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-red);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dsis-hero-eyebrow::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--brand-red);
}

.dsis-hero-title {
  font-family: var(--font-serif-ja);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  color: var(--brand-navy);
  line-height: 1.25;
  margin-bottom: 14px;
}

.dsis-hero-en {
  font-size: 15px;
  color: var(--text-light);
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.dsis-hero-lead {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.85;
  max-width: 760px;
}

/* ---- アンカーメニュー ---- */
.dsis-nav {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 68px;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.dsis-nav-list {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.dsis-nav-list::-webkit-scrollbar { display: none; }

.dsis-nav-link {
  display: block;
  padding: 18px 22px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  text-decoration: none;
  transition: var(--transition);
}

.dsis-nav-link:hover,
.dsis-nav-link.active {
  color: var(--brand-red);
  border-bottom-color: var(--brand-red);
}

/* ---- 目的選択セクション ---- */
.dsis-purpose-section {
  padding: 64px 0 56px;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
}

.dsis-purpose-heading {
  font-family: var(--font-serif-ja);
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 700;
  color: var(--brand-navy);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.dsis-purpose-heading::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.dsis-service-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.dsis-service-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-decoration: none;
  display: block;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.dsis-service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--card-accent, var(--brand-navy));
}

.dsis-service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--card-accent, var(--brand-navy));
}

.dsis-service-card--stabiz { --card-accent: #3c8390; }
.dsis-service-card--staaka { --card-accent: #009edc; }
.dsis-service-card--zadam  { --card-accent: var(--brand-red); }

.dsis-service-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 14px;
  color: #fff;
  background: var(--card-accent, var(--brand-navy));
}

.dsis-service-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--brand-navy);
  line-height: 1.5;
  margin-bottom: 8px;
}

.dsis-service-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.dsis-service-card-arrow {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 700;
  color: var(--card-accent, var(--brand-navy));
  margin-top: 16px;
  transition: var(--transition);
}

.dsis-service-card:hover .dsis-service-card-arrow {
  gap: 8px;
}

/* ---- 各サービスセクション共通 ---- */
.dsis-section {
  padding: 72px 0;
  scroll-margin-top: 120px;
}

.dsis-section-alt {
  background: var(--brand-navy);
  padding: 72px 0;
  scroll-margin-top: 120px;
  position: relative;
  overflow: hidden;
}

.dsis-section-alt::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,200,232,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,232,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.dsis-section-tag {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.dsis-section-tag::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
}

.dsis-section--stabiz .dsis-section-tag { color: #3c8390; }
.dsis-section--zadam  .dsis-section-tag { color: var(--brand-red); }
.dsis-section-alt     .dsis-section-tag { color: var(--accent-cyan); }

.dsis-section-title {
  font-family: var(--font-serif-ja);
  font-size: clamp(20px, 2.8vw, 30px);
  font-weight: 700;
  color: var(--brand-navy);
  line-height: 1.35;
  margin-bottom: 8px;
}

.dsis-section-alt .dsis-section-title { color: #fff; }

.dsis-section-subtitle {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-light);
  margin-bottom: 36px;
  line-height: 1.6;
}

.dsis-section-alt .dsis-section-subtitle { color: rgba(255,255,255,0.6); }

/* ---- バナー画像ブロック ---- */
.dsis-banner-block {
  margin-bottom: 28px;
}

.dsis-banner-block img {
  display: block;
  max-width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

/* ---- キャッチコピーブロック ---- */
.dsis-catch {
  font-family: var(--font-serif-ja);
  font-size: clamp(16px, 2.2vw, 22px);
  font-weight: 700;
  color: var(--brand-navy);
  line-height: 1.5;
  padding: 20px 0;
  border-bottom: 4px solid var(--brand-navy);
  margin-bottom: 24px;
}

.dsis-catch--stabiz { color: #3c8390; border-bottom-color: #3c8390; }
.dsis-catch--staaka { color: #009edc; border-bottom-color: #009edc; }
.dsis-catch--zadam  { color: var(--brand-red); border-bottom-color: var(--brand-red); }

/* ---- フィーチャーリスト ---- */
.dsis-feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.dsis-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.dsis-feature-badge {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  line-height: 1.5;
}

.dsis-feature-badge--navy  { background: #3c8390; }
.dsis-feature-badge--blue  { background: #009edc; }
.dsis-feature-badge--red   { background: var(--brand-red); }
.dsis-feature-badge--free  { background: var(--brand-red); }

/* ---- 2カラムレイアウト ---- */
.dsis-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
  margin-bottom: 32px;
}

.dsis-2col img {
  display: block;
  max-width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

/* ---- カリキュラムリスト ---- */
.dsis-curriculum-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.dsis-curriculum-list li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  padding: 8px 12px;
  background: var(--bg-section);
  border-left: 3px solid #009edc;
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* ---- 注記ボックス ---- */
.dsis-note-box {
  border: 1px solid #009edc;
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 24px;
}

.dsis-note-box-head {
  background: #009edc;
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  padding: 8px 16px;
  line-height: 1.7;
}

.dsis-note-box-head--green { background: #3c8390; }
.dsis-note-box-head--red   { background: var(--brand-red); }

.dsis-note-box-body {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ---- 対応表（スクロール可能テーブルラッパー） ---- */
.dsis-table-section {
  margin-top: 40px;
}

.dsis-table-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  padding: 10px 16px;
  margin-bottom: 16px;
  background: #009edc;
  border-radius: var(--radius) var(--radius) 0 0;
}

.dsis-table-wrapper {
  overflow-x: auto;
  border-radius: 0 var(--radius) var(--radius) var(--radius);
  border: 1px solid var(--border);
  background: #fff;
}

.dsis-table-wrapper table {
  border-collapse: collapse;
  min-width: 600px;
  width: 100%;
  font-size: 13px;
}

.dsis-table-wrapper th,
.dsis-table-wrapper td {
  padding: 8px 12px;
  border: 1px solid #ccc;
  line-height: 1.5;
}

.dsis-table-note {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 8px;
}

/* ---- スペックブロック（Z-Adam 性能比較） ---- */
.dsis-spec-block {
  margin-bottom: 24px;
}

.dsis-spec-head {
  background: var(--brand-red);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  padding: 8px 16px;
  border-radius: var(--radius) var(--radius) 0 0;
}

.dsis-spec-body {
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.dsis-spec-body img {
  display: block;
  max-width: 100%;
  margin: 12px 0;
}

/* ---- 書籍カード ---- */
.dsis-book-card {
  border: 1px solid #009edc;
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: stretch;
  margin-top: 24px;
}

.dsis-book-card-body {
  padding: 16px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  flex: 1;
}

.dsis-book-card-img {
  flex-shrink: 0;
  display: flex;
  align-items: flex-end;
  padding: 0 16px 0 0;
}

.dsis-book-card-img img {
  display: block;
  width: 80px;
  height: auto;
}

/* ---- セクション区切り ---- */
.dsis-divider {
  height: 1px;
  background: var(--border);
  margin: 60px 0 0;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .dsis-service-cards {
    grid-template-columns: 1fr;
  }

  .dsis-2col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .dsis-hero {
    padding: 40px 0 36px;
  }

  .dsis-section,
  .dsis-section-alt {
    padding: 48px 0;
  }

  .dsis-nav-link {
    padding: 14px 16px;
  }
}