@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

/* ==========================================================================
   記事ページ専用スタイル（完全独立版）
   ========================================================================== */

/* ========================================
   リセット・基本設定
   ======================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  background: #fff;
  color: #333;
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

ul,
ol {
  list-style: none;
}

/* ========================================
   ヘッダー・ナビゲーション
   ======================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  padding: 20px;
}

.navbar {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.navbar .brand {
  display: none;
}

.navbar .brand img {
  height: 32px;
}

.navbar .brand span {
  font-size: 1.125rem;
  font-weight: 700;
  color: #333;
}

.navbar nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  background: #fff;
  box-shadow: 2px 0 20px rgba(0, 0, 0, 0.15);
  padding: 80px 30px 30px;
  z-index: 999;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}

.navbar nav.active {
  display: block;
  transform: translateX(0);
}

.navbar nav ul {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.navbar nav ul li {
  border-bottom: 1px solid #e5e5e5;
}

.navbar nav ul li a {
  display: block;
  color: #333;
  font-size: 1rem;
  font-weight: 500;
  padding: 16px 0;
  transition: color 0.2s;
}

.navbar nav ul li a:hover {
  color: #008599;
}

/* ハンバーガーメニュー */
.mobile_toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 32px;
  height: 24px;
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 0;
  gap: 6px;
}

.mobile_toggle span,
.mobile_toggle::before,
.mobile_toggle::after {
  content: '';
  display: block;
  width: 28px;
  height: 3px;
  background: #008599;
  transition: 0.3s;
}

.mobile_toggle.active span {
  opacity: 0;
}

.mobile_toggle.active::before {
  transform: translateY(9px) rotate(45deg);
}

.mobile_toggle.active::after {
  transform: translateY(-9px) rotate(-45deg);
}

/* メニューオーバーレイ */
.menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 998;
}

.menu-overlay.active {
  display: block;
}

/* ========================================
   アイキャッチバナー（添付画像風デザイン）
   ======================================== */
.eyecatch-banner {
  position: relative;
  width: 100%;
  margin: 0;
  padding: 0;
}

.eyecatch-banner::before {
  content: '';
  display: block;
  padding-top: 56.25%;
  /* 16:9 アスペクト比 */
}

.eyecatch-bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #e0f4f7 0%, #c8eef3 30%, #d4f0f5 70%, #e8f7fa 100%);
  overflow: hidden;
}

/* 斜めの装飾パターン */
.eyecatch-bg-pattern::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 200%;
  background: linear-gradient(-45deg,
      transparent 0%,
      rgba(0, 180, 200, 0.15) 10%,
      rgba(0, 150, 180, 0.1) 20%,
      transparent 30%,
      rgba(100, 200, 220, 0.12) 40%,
      rgba(0, 180, 200, 0.08) 50%,
      transparent 60%,
      rgba(50, 180, 200, 0.1) 70%,
      transparent 80%);
  transform: rotate(-15deg);
}

.eyecatch-bg-pattern::after {
  content: '';
  position: absolute;
  top: -30%;
  right: 0;
  width: 60%;
  height: 150%;
  background: linear-gradient(-50deg,
      transparent 0%,
      rgba(0, 200, 220, 0.1) 20%,
      rgba(100, 220, 240, 0.15) 40%,
      transparent 60%);
  transform: rotate(-20deg);
}

/* 枠線フレーム（左上と右下が開いている） */
.eyecatch-frame {
  position: absolute;
  top: 30px;
  left: 40px;
  right: 40px;
  bottom: 30px;
  pointer-events: none;
}

.eyecatch-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 70%;
  height: 2px;
  background: #3a5a7c;
}

.eyecatch-frame::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 70%;
  background: #3a5a7c;
}

.eyecatch-content::before {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 70%;
  height: 2px;
  background: #3a5a7c;
}

.eyecatch-content::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 2px;
  height: 70%;
  background: #3a5a7c;
}

/* タイトルエリア */
.eyecatch-content {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.eyecatch-title {
  text-align: center;
  line-height: 1.6;
}

.eyecatch-title .title-line1,
.eyecatch-title .title-line3 {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: #2a4a5c;
}

.eyecatch-title .title-line2 {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: #008599;
  margin: 8px 0;
}

/* ロボットキャラクター */
.eyecatch-robot {
  position: absolute;
  bottom: 60px;
  right: 30px;
  width: 200px;
  height: auto;
  animation: float 3s ease-in-out infinite;
  z-index: 10;
  mix-blend-mode: multiply;
  background: transparent;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

/* ========================================
   記事ヒーロー（非表示）
   ======================================== */
.article-hero {
  display: none;
}

.article-hero-inner {
  display: none;
}

.article-hero h1 {
  display: none;
}

.article-hero-meta {
  display: none;
}

/* パンくずリスト（ヒーロー内） */
.article-hero .breadcrumb {
  display: none;
}

.article-hero .breadcrumb-list {
  display: none;
}

.article-hero .breadcrumb-list a {
  display: none;
}

.article-hero .breadcrumb-list a:hover {
  color: #fff;
}

.article-hero .breadcrumb-list .separator {
  display: none;
}

.article-hero .breadcrumb-list .current {
  display: none;
}

/* ========================================
   アイキャッチ画像（非表示）
   ======================================== */
.article-eyecatch {
  display: none;
}

.article-eyecatch img {
  display: none;
}

.article-eyecatch-placeholder {
  display: none;
  line-height: 1.6;
}

/* ========================================
   記事コンテナ
   ======================================== */
.article-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 40px 80px;
  color: #333;
  background: #fff;
  min-height: 100vh;
}

/* ========================================
   目次
   ======================================== */
.toc {
  background: #f8f9fa;
  border: none;
  border-radius: 0;
  padding: 32px;
  margin-bottom: 48px;
}

.toc-title {
  font-size: 1rem;
  font-weight: 700;
  color: #333;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid #e5e5e5;
}

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

.toc-list>li {
  margin-bottom: 0;
  padding: 16px 0;
  padding-left: 0;
  border-bottom: 1px solid #e0e0e0;
}

.toc-list>li:last-child {
  border-bottom: none;
}

.toc-list>li>a {
  color: #333;
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1.8;
  display: block;
}

.toc-list>li>a:hover {
  color: #008599;
  text-decoration: underline;
}

/* 目次のサブリスト */
.toc-sublist {
  list-style: none;
  padding-left: 20px;
  margin-top: 12px;
}

.toc-sublist li {
  margin-bottom: 0;
  padding: 8px 0;
  border-bottom: 1px dashed #e0e0e0;
}

.toc-sublist li:last-child {
  border-bottom: none;
}

.toc-sublist a {
  color: #555;
  text-decoration: none;
  font-size: 0.875rem;
  line-height: 1.6;
}

.toc-sublist a:hover {
  color: #008599;
  text-decoration: underline;
}

/* ========================================
   記事本文
   ======================================== */
.article-body {
  color: #333;
  line-height: 2;
  font-size: 1.1rem;
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 64px;
  margin-bottom: 24px;
  padding: 12px 0 12px 24px;
  background: transparent;
  border-left: none;
  color: #333;
  position: relative;
}

.article-body h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  background: #008599;
}

.article-body h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 3px solid #666;
  color: #1a1a1a;
}

.article-body h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-top: 32px;
  margin-bottom: 12px;
  color: #1a1a1a;
}

.article-body p {
  margin-bottom: 24px;
}

.article-body ul,
.article-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.article-body li {
  margin-bottom: 8px;
  line-height: 1.8;
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin: 24px 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.article-body a {
  color: #1a73e8;
  text-decoration: none;
}

.article-body a:hover {
  text-decoration: underline;
}

.article-body strong {
  background: linear-gradient(transparent 60%, #ffeb99 60%);
  font-weight: 600;
}

/* ========================================
   吹き出し（会話形式）
   ======================================== */
.balloon-wrap {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin: 24px 0;
}

.balloon-wrap.right {
  flex-direction: row-reverse;
}

.balloon-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: #fff;
  border: 1px solid #ddd;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.balloon-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.balloon-content {
  max-width: calc(100% - 100px);
  flex: 1;
}

.balloon-name {
  font-size: 0.75rem;
  color: #666;
  margin-bottom: 6px;
}

.balloon-wrap.right .balloon-name {
  text-align: right;
}

.balloon {
  padding: 20px 24px;
  border-radius: 0;
  position: relative;
  line-height: 1.8;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.balloon-wrap:not(.right) .balloon {
  border-left: 4px solid #2a9d8f;
}

.balloon-wrap.right .balloon {
  border-right: 4px solid #2a9d8f;
}

.balloon p {
  margin: 0;
  color: #333;
}

/* シンプルな吹き出し（アイコンなし） */
.balloon-simple {
  max-width: 85%;
  padding: 16px 20px;
  border-radius: 16px;
  margin: 20px 0;
  line-height: 1.8;
}

.balloon-simple.left {
  background: #f5f5f5;
  margin-right: auto;
  border-bottom-left-radius: 4px;
}

.balloon-simple.right {
  background: #e8f4fc;
  margin-left: auto;
  border-bottom-right-radius: 4px;
}

.balloon-simple p {
  margin: 0;
  color: #333;
}

/* ========================================
   ハイライトボックス
   ======================================== */
.highlight-box {
  background: #fffde7;
  border: 1px solid #fff59d;
  border-radius: 4px;
  padding: 20px 24px;
  margin: 24px 0;
}

.highlight-box p {
  margin: 0;
  color: #333;
}

/* 注意ボックス */
.note-box {
  background: #fff3e0;
  border-left: 4px solid #ff9800;
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 4px 4px 0;
}

.note-box p {
  margin: 0;
  color: #333;
}

/* リンクボックス */
.link-box {
  display: block;
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  padding: 20px 24px;
  margin: 24px 0;
  text-decoration: none;
  transition: all 0.2s;
}

.link-box:hover {
  border-color: #1a73e8;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.link-box-label {
  font-size: 0.75rem;
  color: #1a73e8;
  margin-bottom: 4px;
}

.link-box-title {
  font-size: 1rem;
  font-weight: 600;
  color: #333;
}

/* ========================================
   プロンプトボックス
   ======================================== */
.prompt-box {
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  padding: 20px 24px;
  margin: 24px 0;
}

.prompt-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: #1a73e8;
  margin-bottom: 12px !important;
}

.prompt-box p:last-child {
  margin-bottom: 0;
  line-height: 1.8;
  color: #333;
}

/* ========================================
   画像キャプション
   ======================================== */
.image-block {
  margin: 32px 0;
}

.image-block img {
  width: 80%;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.image-caption {
  font-size: 0.875rem;
  color: #666;
  text-align: center;
  margin-top: 8px;
}

/* ========================================
   関連記事
   ======================================== */
.related-section {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid #e5e5e5;
}

.related-section h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: #1a1a1a;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
}

.related-card {
  display: block;
  padding: 20px;
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s;
}

.related-card:hover {
  border-color: #1a73e8;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.related-card-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: #333;
}

.related-card-date {
  font-size: 0.75rem;
  color: #666;
}

/* ========================================
   パンくずリスト（単独）
   ======================================== */
.breadcrumb {
  padding: 0;
  margin-bottom: 32px;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.875rem;
  flex-wrap: wrap;
}

.breadcrumb-list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb-list a {
  color: #008599;
  text-decoration: none;
}

.breadcrumb-list a:hover {
  text-decoration: underline;
}

.breadcrumb-list .separator {
  color: #999;
  font-size: 0.75rem;
}

.breadcrumb-list .current {
  color: #666;
}

/* ========================================
   記事一覧ページ
   ======================================== */
.articles-hero {
  background: #1a3a5c;
  padding: 120px 20px 60px;
  text-align: center;
}

.articles-hero h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #fff;
}

.articles-hero p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: 0 auto;
}

.articles-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.article-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.article-card {
  display: block;
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  transition: all 0.2s;
}

.article-card:hover {
  border-color: #1a73e8;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  transform: translateY(-4px);
}

.article-card-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: linear-gradient(135deg, #e8f4fc 0%, #d4e8f5 100%);
}

/* 記事カード用アイキャッチスタイル */
.article-card-image.eyecatch-style {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.article-card-image.eyecatch-style .eyecatch-bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #e0f4f7 0%, #c8eef3 30%, #d4f0f5 70%, #e8f7fa 100%);
}

.article-card-image.eyecatch-style .eyecatch-bg-pattern::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 200%;
  background: linear-gradient(-45deg,
      transparent 0%,
      rgba(0, 180, 200, 0.15) 10%,
      rgba(0, 150, 180, 0.1) 20%,
      transparent 30%,
      rgba(100, 200, 220, 0.12) 40%,
      rgba(0, 180, 200, 0.08) 50%,
      transparent 60%,
      rgba(50, 180, 200, 0.1) 70%,
      transparent 80%);
  transform: rotate(-15deg);
}

.article-card-image.eyecatch-style .eyecatch-frame {
  position: absolute;
  top: 12px;
  left: 16px;
  right: 16px;
  bottom: 12px;
  pointer-events: none;
}

.article-card-image.eyecatch-style .eyecatch-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 2px;
  background: #3a5a7c;
}

.article-card-image.eyecatch-style .eyecatch-frame::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 50%;
  background: #3a5a7c;
}

.article-card-image.eyecatch-style .eyecatch-content {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.article-card-image.eyecatch-style .eyecatch-content::before {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 50%;
  height: 2px;
  background: #3a5a7c;
}

.article-card-image.eyecatch-style .eyecatch-content::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 2px;
  height: 50%;
  background: #3a5a7c;
}

.article-card-image.eyecatch-style .eyecatch-title {
  text-align: center;
  line-height: 1.4;
}

.article-card-image.eyecatch-style .eyecatch-title .title-line1,
.article-card-image.eyecatch-style .eyecatch-title .title-line3 {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: #2a4a5c;
}

.article-card-image.eyecatch-style .eyecatch-title .title-line2 {
  display: block;
  font-size: 1.1rem;
  font-weight: 700;
  color: #008599;
  margin: 4px 0;
}


.article-card-body {
  padding: 20px;
}

.article-card-tag {
  display: inline-block;
  padding: 4px 10px;
  background: #1a73e8;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
}

.article-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: #333;
  margin-bottom: 12px;
  line-height: 1.5;
}

.article-card-excerpt {
  font-size: 0.875rem;
  color: #666;
  margin-bottom: 12px;
  line-height: 1.6;
}

.article-card-date {
  font-size: 0.75rem;
  color: #999;
}

/* ========================================
   フッター
   ======================================== */
.footer {
  background: #f8f9fa;
  border-top: 1px solid #e5e5e5;
  padding: 40px 20px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer .brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer .brand img {
  height: 24px;
  filter: brightness(0);
}

.footer .brand span {
  font-size: 1rem;
  font-weight: 700;
  color: #333;
}

.footer_nav {
  display: flex;
  gap: 24px;
}

.footer_nav a {
  color: #333;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer_nav a:hover {
  color: #1a73e8;
}

.footer_copy {
  width: 100%;
  text-align: center;
  padding-top: 20px;
  margin-top: 20px;
  border-top: 1px solid #e5e5e5;
  font-size: 0.75rem;
  color: #666;
}

/* ========================================
   トップに戻るボタン
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 56px;
  height: 56px;
  background: #008599;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.5rem;
  box-shadow: 0 4px 16px rgba(0, 133, 153, 0.4);
  cursor: pointer;
  transition: all 0.3s;
  z-index: 100;
  text-decoration: none;
}

.back-to-top:hover {
  background: #006d7a;
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(0, 133, 153, 0.5);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: #fff;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ========================================
   レスポンシブ
   ======================================== */
@media (max-width: 768px) {
  .navbar nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  /* アイキャッチバナーのレスポンシブ */
  .eyecatch-banner {
    margin: 0;
    padding: 0;
  }

  .eyecatch-frame {
    top: 15px;
    left: 20px;
    right: 20px;
    bottom: 15px;
  }

  .eyecatch-title .title-line1,
  .eyecatch-title .title-line3 {
    font-size: 1.2rem;
  }

  .eyecatch-title .title-line2 {
    font-size: 1.5rem;
  }

  .eyecatch-robot {
    width: 100px;
    right: 15px;
    bottom: 10px;
  }

  .article-hero {
    padding: 100px 16px 32px;
  }

  .article-hero h1 {
    font-size: 1.375rem;
  }

  .article-eyecatch {
    padding: 0 16px;
  }

  .article-container {
    padding: 32px 16px 60px;
  }

  .article-body h2 {
    font-size: 1.125rem;
    margin-top: 48px;
    padding: 12px 16px;
  }

  .article-body h3 {
    font-size: 1rem;
  }

  .balloon-wrap {
    gap: 8px;
  }

  .balloon-icon {
    width: 48px;
    height: 48px;
  }

  .balloon-simple {
    max-width: 95%;
  }

  .articles-hero {
    padding: 100px 16px 40px;
  }

  .articles-hero h1 {
    font-size: 1.5rem;
  }

  .articles-container {
    padding: 32px 16px 60px;
  }

  .article-list {
    grid-template-columns: 1fr;
  }

  .toc {
    padding: 20px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer_nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }
}
/* ========================================
   Corporate Footer Styles (Standardized)
   ======================================== */
:root {
    --color-primary: #0f4788;
    --color-primary-dark: #00447c;
    --color-secondary: #6c757d;
    --color-dark: #343a40;
    --color-light: #f8f9fa;
    --color-white: #ffffff;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --container-max-width: 1200px;
}

.corporate-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.corporate-footer {
    background-color: #222;
    padding: 60px 0 20px;
    color: white;
    margin-top: 0; /* Reset if needed */
}

.corporate-btn {
    display: inline-block;
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 10px 20px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.corporate-btn:hover {
    background-color: var(--color-primary-dark);
}

/* Material Icons support if not loaded */
.material-icons {
  font-family: 'Material Icons';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  display: inline-block;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'liga';
}