* { box-sizing: border-box; margin: 0; padding: 0; }
  body {
    font-family: 'Noto Sans JP', sans-serif;
    background: #ffffff; color: #444; font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  #bgCanvas {
    position: fixed; top: 0; left: 0;
    width: 100vw; height: 100vh;
    z-index: 9999; pointer-events: none;
    mix-blend-mode: multiply;
    transition: opacity 0.15s;
    opacity: 0;
  }

  .wf-label {
    text-align: center; padding: 6px;
    background: #eee; border-bottom: 1px solid #ccc;
    font-size: 11px; color: #666;
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
  }

    /* ===== HEADER ===== */
  header {
    position: sticky; top: 0; background: #fff; z-index: 200;
    box-shadow: 0 1px 0 #e8e8e8;
    border-top: 2px solid; border-image: linear-gradient(to right, #1e3a5f, #2c5f8a, #3a7ab5) 1;
  }
  .header-top {
    display: flex; align-items: center;
    max-width: 1600px; margin: 0 auto;
    padding: 18px 40px; gap: 32px;
    transition: padding 0.3s;
  }
  .logo {
    display: flex; align-items: center;
    text-decoration: none; cursor: pointer;
    flex-shrink: 0; padding: 0; border: none; background: none;
    transition: opacity 0.3s;
  }
  .logo img { height: 22px; width: auto; }
  .logo:hover { opacity: 0.6; background: none; }
  .global-nav {
    display: flex; flex: 1; gap: 0; position: relative;
    min-width: 0; border: none; align-items: center; justify-content: center;
  }
  .nav-item { position: relative; }
  .nav-item > a {
    display: block; text-align: center; padding: 8px 16px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 14px; font-weight: 600; color: #1a1a1a; text-decoration: none;
    cursor: pointer; white-space: nowrap; transition: color 0.3s;
    position: relative; border: none; letter-spacing: 0.04em;
  }
  .nav-item > a::after {
    content: ''; position: absolute; bottom: 0; left: 50%;
    width: 0; height: 1px; background: #1a1a1a;
    transition: width 0.3s ease, left 0.3s ease;
  }
  .nav-item > a:hover::after, .nav-item:hover > a::after { width: 100%; left: 0; }
  .nav-item:last-child > a { border-right: none; }
  .nav-item > a:hover, .nav-item:hover > a { color: #1a1a1a; background: transparent; }
  .nav-item > a.has-sub::after {
    content: ''; width: 0; height: 0; position: static;
    display: inline-block; vertical-align: middle;
    border-left: 4px solid transparent; border-right: 4px solid transparent;
    border-top: 4px solid #2c5f8a; margin-left: 5px;
    transition: transform 0.2s; background: none;
  }
  .nav-item:hover > a.has-sub::after, .nav-item > a.has-sub.active::after {
    transform: rotate(180deg); border-top-color: #2c5f8a; width: 0; left: auto;
  }
  .nav-item > a.has-sub.active { color: #2c5f8a; }
  .mega-menu {
    position: fixed; top: 0; left: 0; right: 0;
    background: #fff; z-index: 500;
    border-bottom: 1px solid #e0e0e0; box-shadow: 0 8px 32px rgba(0,0,0,.1);
    clip-path: inset(0 0 100% 0);
    transition: clip-path 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    pointer-events: none;
  }
  .mega-menu.open { clip-path: inset(0 0 0 0); pointer-events: auto; }
  .mega-menu-header {
    display: flex; align-items: center; justify-content: center;
    padding: 18px 48px; border-bottom: 1px solid #e8e8e8; position: relative;
  }
  .mega-menu-header .mega-title {
    font-family: 'Noto Sans JP', sans-serif; font-size: 16px; font-weight: 700; color: #1a1a1a;
  }
  .mega-menu-header .mega-title::before { content: '\203A'; margin-right: 8px; color: #2c5f8a; }
  .mega-menu-body {
    display: flex; gap: 48px; padding: 32px 64px 40px; max-width: 1200px; margin: 0 auto;
  }
  .mega-col { flex: 1; }
  .mega-col-title {
    font-family: 'Noto Sans JP', sans-serif; font-size: 13px; font-weight: 700; color: #1a1a1a;
    margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid #e8e8e8;
  }
  .mega-col a {
    display: block; padding: 7px 0; font-family: 'Noto Sans JP', sans-serif;
    font-size: 13px; font-weight: 600; color: #444; text-decoration: none; transition: color 0.2s;
  }
  .mega-col a::before { content: '\203A'; margin-right: 8px; color: #2c5f8a; }
  .mega-col a:hover { color: #2c5f8a; }
  .mega-menu-footer {
    text-align: center; padding: 14px; border-top: 1px solid #e8e8e8;
    cursor: pointer; font-size: 13px; color: #666; transition: background 0.2s;
  }
  .mega-menu-footer:hover { background: #f7f7f5; }
  .mega-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.3); z-index: 499; }
  .mega-overlay.open { display: block; }
  .dropdown { display: none !important; }
  .hamburger-backdrop {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,.3); z-index: 599; opacity: 0; transition: opacity 0.4s;
  }
  .hamburger-backdrop.open { display: block; opacity: 1; }
  .hamburger-panel {
    position: fixed; top: 0; right: 0; bottom: 0; left: 240px;
    background: #fff; z-index: 600; overflow-y: auto;
    flex-direction: column; display: flex;
    clip-path: inset(0 0 0 100%);
    transition: clip-path 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }
  .hamburger-panel.open { clip-path: inset(0 0 0 0); }
  .hamburger-local {
    padding: 24px 48px; border-top: 1px solid #e8e8e8;
  }
  .hamburger-local-label {
    font-family: 'Inter', sans-serif;
    font-size: 10px; font-weight: 700; color: #666;
    letter-spacing: 0.1em; text-transform: uppercase;
    margin-bottom: 12px;
  }
  .hamburger-local-links {
    display: flex; flex-wrap: wrap; gap: 6px 16px;
  }
  .hamburger-local-links a {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px; color: #1a1a1a; text-decoration: none;
    font-weight: 500; transition: color 0.2s;
  }
  .hamburger-local-links a:hover { color: #2c5f8a; }
  .hamburger-panel-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 24px 48px; border-bottom: 1px solid #e8e8e8;
  }
  .hamburger-panel-header .logo-ham { height: 18px; width: auto; }
  .hamburger-close {
    border: none; background: none; cursor: pointer;
    font-size: 32px; color: #1a1a1a; line-height: 1;
    padding: 4px 8px; transition: opacity 0.3s;
  }
  .hamburger-close:hover { opacity: 0.5; }
  .hamburger-panel-body { display: flex; padding: 48px; flex: 1; }
  .hamburger-nav { flex: 1; min-width: 0; margin-right: 40px; }
  .hamburger-nav-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px 40px; }
  .hamburger-nav-group > a {
    display: block; font-family: 'Noto Sans JP', sans-serif;
    font-size: 18px; font-weight: 700; color: #1a1a1a;
    text-decoration: none; padding-bottom: 10px; margin-bottom: 10px;
    border-bottom: 1px solid #e8e8e8; letter-spacing: 0.04em; transition: color 0.2s;
  }
  .hamburger-nav-group > a:hover { color: #2c5f8a; }
  .hamburger-nav-group .ham-sub a {
    display: block; font-family: 'Noto Sans JP', sans-serif;
    font-size: 13px; font-weight: 600; color: #666;
    text-decoration: none; padding: 5px 0; transition: color 0.2s;
  }
  .hamburger-nav-group .ham-sub a::before { content: '\203A'; margin-right: 6px; color: #2c5f8a; }
  .hamburger-nav-group .ham-sub a:hover { color: #2c5f8a; }
  .hamburger-aside {
    flex: 1; min-width: 0; padding-left: 40px;
    border-left: 1px solid #e8e8e8;
    display: flex; flex-direction: column; gap: 24px;
  }
  .hamburger-member-banner {
    background: #0a0a0a; color: #fff; padding: 32px 24px; text-align: center;
    text-decoration: none; display: block; transition: background 0.3s;
  }
  .hamburger-member-banner:hover { background: #1a1a1a; }
  .hamburger-member-banner .ham-member-label {
    font-family: 'Inter', sans-serif; font-size: 10px; letter-spacing: 0.15em;
    color: rgba(255,255,255,.5); text-transform: uppercase; margin-bottom: 12px;
  }
  .hamburger-member-banner .ham-member-title {
    font-family: 'Noto Serif JP', serif; font-size: 18px; font-weight: 600;
    line-height: 1.5; margin-bottom: 8px;
  }
  .hamburger-member-banner .ham-member-desc {
    font-size: 12px; color: rgba(255,255,255,.7); line-height: 1.6; margin-bottom: 16px;
  }
  .hamburger-member-banner .ham-member-btn {
    display: inline-block; border: 1px solid #fff; padding: 10px 28px;
    font-size: 12px; font-weight: 600; letter-spacing: 0.06em; color: #fff; transition: all 0.3s;
  }
  .hamburger-member-banner:hover .ham-member-btn { background: #fff; color: #0a0a0a; }
  .hamburger-search { margin-bottom: 32px; }
  .hamburger-search-label {
    font-family: 'Inter', sans-serif; font-size: 11px; font-weight: 700; color: #1a1a1a;
    letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 12px;
  }
  .hamburger-search-box { display: flex; gap: 0; }
  .hamburger-search-box input {
    flex: 1; border: 1px solid #e0e0e0; border-right: none;
    padding: 12px 16px; font-size: 14px; font-family: 'Noto Sans JP', sans-serif; outline: none;
  }
  .hamburger-search-box input:focus { border-color: #2c5f8a; }
  .hamburger-search-box button {
    border: none; background: #1a1a1a; color: #fff;
    padding: 12px 24px; font-size: 13px; font-weight: 700;
    font-family: 'Noto Sans JP', sans-serif; cursor: pointer; transition: background 0.3s;
  }
  .hamburger-search-box button:hover { background: #333; }
  .hamburger-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
  .hamburger-tags a {
    font-family: 'Noto Sans JP', sans-serif; font-size: 12px; font-weight: 600; color: #fff;
    background: #2c5f8a; border-radius: 20px; padding: 6px 16px;
    text-decoration: none; transition: background 0.2s;
  }
  .hamburger-tags a:hover { background: #2a5d8a; }
  .header-actions { display: flex; gap: 12px; align-items: center; flex-shrink: 0; }
  .btn-search {
    border: none; background: none; padding: 8px; color: #1a1a1a; cursor: pointer;
    display: flex; align-items: center; justify-content: center; transition: opacity 0.3s;
  }
  .btn-search svg { width: 18px; height: 18px; }
  .btn-search:hover { opacity: 0.5; }
  .btn-login {
    border: none; background: #1a1a1a; color: #fff;
    padding: 8px 20px; font-size: 11px; cursor: pointer;
    text-decoration: none; white-space: nowrap;
    font-family: 'Noto Sans JP', sans-serif; font-weight: 600;
    letter-spacing: 0.06em; border-radius: 20px; transition: background 0.3s;
  }
  .btn-login:hover { background: #333; }
  .btn-hamburger {
    display: none; border: none; background: none;
    padding: 8px; cursor: pointer; flex-shrink: 0;
    flex-direction: column; justify-content: center; align-items: center;
    gap: 5px; width: 36px; height: 36px;
  }
  .btn-hamburger span {
    display: block; width: 20px; height: 2px; background: #1a1a1a;
    transition: transform 0.3s, opacity 0.3s;
  }
  .logo-small { display: none; }
  header.scrolled {
    background: transparent; box-shadow: none; border-top: none; pointer-events: none;
  }
  header.scrolled .header-top { padding: 10px 40px; }
  header.scrolled .logo { pointer-events: auto; margin-right: auto; }
  header.scrolled .global-nav { display: none; }
  header.scrolled .header-actions { pointer-events: auto; }
  header.scrolled .btn-hamburger { display: flex; pointer-events: auto; }
  header.scrolled .logo-full { display: none; }
  header.scrolled .logo-small { display: block; height: 20px; width: auto; }


  /* KAZI SeaDream Club 追従ボタン */

  /* ===== 記事ヘッダー（2カラム：左画像 + 右タイトル） ===== */
  .article-header {
    display: grid; grid-template-columns: 720px 1fr; gap: 0;
    max-width: 1600px; margin: 0 auto; padding: 40px 40px;
    align-items: center;
  }
  .article-header-img {
    aspect-ratio: 3/2;
    background-size: cover; background-position: center;
    background-color: #e0ddd8;
  }
  .article-header-info {
    padding: 0 0 0 48px;
    display: flex; flex-direction: column; justify-content: center;
  }

  /* ===== 記事コンテンツ（1カラム）===== */
  .article-wrap {
    max-width: 900px; margin: 0 auto; padding: 48px 24px 80px;
  }

  /* パンくず（ヘッダー内） */
  .article-header .breadcrumb {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px; font-weight: 300; color: #666; margin-bottom: 20px;
  }
  .article-header .breadcrumb a {
    color: #666; text-decoration: none; transition: color .15s;
  }
  .article-header .breadcrumb a:hover { color: #666; text-decoration: underline; }

  /* カテゴリーバッジ */
  .article-cat-badge {
    display: inline-block;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 9px; font-weight: 600; color: #1a1a1a;
    letter-spacing: 0.04em;
    background: #b8ecff; border-radius: 0;
    padding: 3px 10px; margin-bottom: 16px;
    align-self: flex-start;
  }

  /* タイトル */
  .article-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 28px; font-weight: 600; color: #1a1a1a;
    line-height: 1.55; letter-spacing: -0.01em;
    margin-bottom: 16px;
  }

  /* リード文 */
  .article-lead {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 14px; font-weight: 300; color: #666;
    line-height: 1.8; margin-bottom: 20px;
  }

  /* 著者行 */
  .article-byline {
    display: flex; align-items: center; gap: 8px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px; font-weight: 300; color: #666;
    margin-bottom: 16px;
  }
  .article-byline-logo {
    width: 20px; height: 20px; background: #2c5f8a; border-radius: 2px;
    display: flex; align-items: center; justify-content: center;
    font-family: 'Inter', sans-serif; font-size: 8px; color: #fff; font-weight: 600;
  }

  /* メタ情報（日付 + いいね） */
  .article-meta {
    display: flex; justify-content: space-between; align-items: center;
    font-family: 'Inter', sans-serif;
    font-size: 13px; font-weight: 300; color: #666;
    margin-top: auto; padding-top: 16px;
  }
  .article-meta .meta-updated { color: #666; }
  .article-like {
    display: flex; align-items: center; gap: 4px;
    font-size: 13px; color: #c00; cursor: pointer;
  }
  .article-like svg { width: 16px; height: 16px; fill: none; stroke: #c00; stroke-width: 2; }

  /* ===== 上部シェアボタン ===== */
  .share-top {
    display: flex; align-items: center; gap: 0;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid #e8e8e8;
  }
  .share-top span {
    font-size: 11px; color: #666; margin-right: 16px;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 400; letter-spacing: 0.04em;
  }
  .share-btn {
    display: inline-flex; align-items: center; gap: 6px;
    border: 1px solid #e0e0e0; padding: 6px 16px;
    font-size: 11px; color: #555; cursor: pointer; background: #fff;
    text-decoration: none;
    font-family: 'Noto Sans JP', sans-serif; font-weight: 500;
    transition: background .2s, color .2s, border-color .2s;
    letter-spacing: 0.02em;
  }
  .share-btn:hover { background: #1a1a1a; color: #fff; border-color: #1a1a1a; }
  .share-btn + .share-btn { margin-left: 8px; }
  .share-btn + .share-btn::before { content: none; }
  .share-btn svg { width: 14px; height: 14px; fill: currentColor; flex-shrink: 0; }

  /* タグ */
  .article-tags {
    display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px;
  }
  .article-tag {
    background: #fff; border: 1px solid #d0d0d0; padding: 6px 16px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px; font-weight: 500; color: #555;
    text-decoration: none; cursor: pointer;
    transition: background .15s, color .15s, border-color .15s;
  }
  .article-tag:hover { background: #1a1a1a; color: #fff; border-color: #1a1a1a; }

  /* ===== 目次ボックス ===== */
  .toc-box {
    background: #f7f7f5;
    padding: 32px 36px; margin-bottom: 48px;
    border-left: 3px solid #2c5f8a;
  }
  .toc-box-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 16px; font-weight: 600; color: #1a1a1a;
    margin-bottom: 20px; padding-bottom: 14px; border-bottom: 1px solid #ddd;
    letter-spacing: 0.06em;
    display: flex; align-items: center; justify-content: space-between;
  }
  .toc-box ol {
    padding-left: 24px; list-style: decimal;
    counter-reset: toc-counter;
  }
  .toc-box ol li {
    margin-bottom: 12px; font-size: 14px; line-height: 1.7;
    font-family: 'Noto Sans JP', sans-serif; font-weight: 400;
  }
  .toc-box ol li ol {
    margin-top: 10px; list-style: decimal; padding-left: 24px;
  }
  .toc-box ol li ol li { margin-bottom: 8px; font-size: 13px; }
  .toc-box a {
    color: #444; text-decoration: none; transition: color .2s;
  }
  .toc-box a:hover { color: #2c5f8a; }
  .toc-toggle {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px; font-weight: 400; color: #666; cursor: pointer;
    transition: color .15s; flex-shrink: 0;
  }
  .toc-toggle:hover { color: #2c5f8a; }

  /* ===== 記事本文 ===== */
  .article-body {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 16px; line-height: 2.0; color: #444; margin-bottom: 40px;
  }
  .article-body p { margin-bottom: 24px; }
  .article-body h2 {
    font-family: 'Noto Serif JP', serif;
    font-size: 22px; font-weight: 600; color: #1a1a1a;
    margin: 56px 0 24px;
    padding: 16px 24px;
    background: none;
    border-left: 3px solid #2c5f8a;
    scroll-margin-top: 80px;
    line-height: 1.5;
    letter-spacing: 0.04em;
  }
  .article-body h3 {
    font-family: 'Noto Serif JP', serif;
    font-size: 18px; font-weight: 600; color: #1a1a1a;
    margin: 40px 0 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid #2c5f8a;
    scroll-margin-top: 80px;
    line-height: 1.5;
    letter-spacing: 0.04em;
  }
  .article-img-inline { width: 100%; aspect-ratio: 3/2; background-size: cover; background-position: center; border-radius: 4px; margin: 24px 0 8px; }
  .article-img-caption {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px; color: #666; margin-bottom: 28px; text-align: center;
    font-style: italic;
    font-weight: 300;
  }

  /* ===== 記事内ネイティブ広告バナー ===== */
  .ad-native {
    background: #f7f7f5; padding: 20px 24px; margin: 40px 0;
    display: flex; align-items: center; gap: 20px;
    text-decoration: none; color: inherit;
    position: relative; transition: background 0.2s;
  }
  .ad-native:hover { background: #f0eeeb; }
  .ad-native-img {
    width: 160px; height: 90px; flex-shrink: 0;
    background: #e0ddd8; background-size: cover; background-position: center;
    display: flex; align-items: center; justify-content: center;
    font-size: 10px; color: #888;
  }
  .ad-native-body { flex: 1; }
  .ad-native-sponsor {
    font-family: 'Inter', sans-serif;
    font-size: 9px; color: #666; letter-spacing: 0.1em;
    text-transform: uppercase; margin-bottom: 4px;
  }
  .ad-native-title {
    font-size: 14px; color: #1a1a1a; font-weight: 600; line-height: 1.5;
  }
  .ad-native-desc {
    font-size: 12px; color: #666; margin-top: 4px; font-weight: 300;
  }
  .ad-native .ad-icon {
    position: absolute; top: 8px; right: 8px;
  }
  .ad-icon {
    display: inline-flex; align-items: center; justify-content: center;
    font-family: 'Inter', sans-serif;
    font-size: 9px; font-weight: 700; letter-spacing: 0.08em;
    color: #fff; background: #999;
    padding: 2px 6px; border-radius: 3px; line-height: 1;
  }
  /* 関連記事内ステルスAD */
  .related-card-ad { position: relative; }
  .related-card-ad .related-card-cat { background: transparent; color: #666; font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase; padding: 0; }

  /* ===== 記事内CTAバナー ===== */
  .in-article-cta {
    background: #1a1a1a;
    padding: 32px 36px; margin: 40px 0;
    display: flex; align-items: center; justify-content: space-between; gap: 24px;
    border-radius: 4px;
  }
  .in-article-cta .cta-text h4 {
    font-family: 'Noto Serif JP', serif;
    font-size: 17px; font-weight: 400; color: #fff; margin-bottom: 8px;
    line-height: 1.5;
  }
  .in-article-cta .cta-text p {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 13px; color: rgba(255,255,255,.65); font-weight: 300;
  }
  .in-article-cta .cta-btn {
    border: 1px solid #fff; background: transparent; color: #fff;
    padding: 12px 32px; font-size: 13px; cursor: pointer;
    text-decoration: none; white-space: nowrap; flex-shrink: 0;
    font-family: 'Noto Sans JP', sans-serif; font-weight: 400;
    border-radius: 2px;
    transition: background .2s, color .2s;
  }
  .in-article-cta .cta-btn:hover { background: #fff; color: #1a1a1a; }

  /* ===== 監修者情報 ===== */
  .supervisor-box {
    background: #f7f7f5;
    padding: 32px 36px; margin-bottom: 32px;
    display: flex; gap: 20px; align-items: flex-start;
    position: relative;
  }
  .supervisor-label {
    position: absolute; top: 0; left: 0;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 10px; font-weight: 600; color: #fff; background: #2c5f8a;
    padding: 5px 14px; letter-spacing: 0.06em;
  }
  .supervisor-avatar {
    width: 64px; height: 64px; background: #d0cdc8; border-radius: 50%;
    flex-shrink: 0; display: flex; align-items: center; justify-content: center;
    font-size: 9px; color: #555;
    font-family: 'Noto Sans JP', sans-serif;
  }
  .supervisor-info { flex: 1; }
  .supervisor-name {
    font-family: 'Noto Serif JP', serif;
    font-size: 16px; font-weight: 600; color: #1a1a1a; margin-bottom: 4px;
    line-height: 1.5;
  }
  .supervisor-title {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px; font-weight: 400; color: #555; margin-bottom: 14px;
    letter-spacing: 0.02em;
  }
  .supervisor-bio {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 13px; font-weight: 400; color: #555; line-height: 1.9;
  }

  /* ===== 著者プロフィール ===== */
  .author-profile {
    background: #f7f7f5;
    padding: 36px; margin-bottom: 32px;
    display: flex; gap: 28px; align-items: flex-start;
  }
  .author-avatar {
    width: 80px; height: 80px; background: #d0cdc8; border-radius: 50%;
    flex-shrink: 0; display: flex; align-items: center; justify-content: center;
    font-size: 10px; color: #555;
    font-family: 'Noto Sans JP', sans-serif;
  }
  .author-info { flex: 1; }
  .author-label {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px; font-weight: 400; color: #666; margin-bottom: 8px;
    letter-spacing: 0.05em;
  }
  .author-name {
    font-family: 'Noto Serif JP', serif;
    font-size: 18px; font-weight: 600; color: #1a1a1a; margin-bottom: 4px;
  }
  .author-title {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px; font-weight: 400; color: #555; margin-bottom: 14px;
  }
  .author-bio {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 13px; font-weight: 400; color: #555; line-height: 1.9; margin-bottom: 18px;
  }
  .author-link {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 13px; font-weight: 600; color: #2c5f8a;
    text-decoration: none; display: inline-flex; align-items: center; gap: 4px;
    transition: color .15s;
  }
  .author-link:hover { color: #1e4a6f; }

  /* ===== 下部シェアボタン ===== */
  .share-bottom {
    border-top: 1px solid #e8e8e8; border-bottom: 1px solid #e8e8e8;
    padding: 24px 0; margin-bottom: 48px;
    display: flex; align-items: center; gap: 0; flex-wrap: wrap;
  }
  .share-bottom span {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px; font-weight: 400; color: #666;
    margin-right: 16px; letter-spacing: 0.04em;
  }

  /* ===== 前後記事ナビ ===== */
  .article-pager {
    display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin-bottom: 56px;
  }
  .pager-btn {
    padding: 24px 0; display: block;
    text-decoration: none; color: #555; transition: color .2s;
    border-top: 1px solid #e8e8e8;
  }
  .pager-btn:hover { color: #2c5f8a; }
  .pager-label {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px; font-weight: 400; color: #666; margin-bottom: 8px;
    letter-spacing: 0.03em;
  }
  .pager-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 15px; color: #1a1a1a; line-height: 1.6;
    font-weight: 500;
  }
  .pager-btn:hover .pager-title { color: #2c5f8a; }
  .pager-btn.prev { padding-right: 32px; border-right: 1px solid #e8e8e8; }
  .pager-btn.next { text-align: right; padding-left: 32px; }

  /* ===== 関連記事 ===== */
  .article-related { margin-bottom: 48px; }
  .section-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 20px; font-weight: 600; color: #1a1a1a;
    margin-bottom: 24px;
    padding-bottom: 14px; border-bottom: 2px solid #2c5f8a;
    letter-spacing: 0.06em;
  }
  .related-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 0;
  }
  .related-card {
    display: flex; flex-direction: row; padding: 24px 20px; gap: 20px;
    border-bottom: 1px solid #f0f0f0; text-decoration: none; color: inherit;
    transition: background .2s; cursor: pointer;
  }
  .related-card:hover { background: #fafafa; }
  .related-card-body {
    flex: 1; min-width: 0; order: 1;
    display: flex; flex-direction: column; gap: 6px;
  }
  .related-card-img {
    width: 120px; height: 80px; flex-shrink: 0; order: 2;
    background-size: cover; background-position: center; border-radius: 2px;
    align-self: center;
  }
  .related-card-cat {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px; color: #2c5f8a; display: inline-block;
    padding: 2px 8px; background: #e8f0f8; border-radius: 2px;
    letter-spacing: 0.04em; font-weight: 500; align-self: flex-start;
  }
  .related-card-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 16px; font-weight: 400; color: #1a1a1a; line-height: 1.7;
  }
  .related-card:hover .related-card-title { color: #2c5f8a; }
  .related-card-excerpt {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 13px; color: #555; line-height: 1.7; font-weight: 300;
  }
  .related-card-date {
    font-family: 'Inter', sans-serif;
    font-size: 12px; color: #555; letter-spacing: 0.04em;
  }

  /* ===== タグ一覧ブロック ===== */
  .tags-block { margin-bottom: 40px; }
  .tags-block-inner {
    background: #f7f7f5; padding: 24px 28px;
  }
  .tags-block-label {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px; font-weight: 400; color: #666; margin-bottom: 14px;
    letter-spacing: 0.05em;
  }
  .tags-block .article-tags { margin-bottom: 0; }
  .tags-block .article-tag {
    background: #fff;
  }


  /* ===== FOOTER ===== */
  footer { background: #1a1a1a; margin-top: 0; border-top: none; }
  .footer-inner { max-width: 1600px; margin: 0 auto; }
  .footer-sitemap {
    padding: 56px 40px 32px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px 24px;
    border-bottom: 1px solid rgba(255,255,255,.1);
  }
  .footer-col {
    display: flex; flex-direction: column;
  }
  .footer-col > a {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px; color: rgba(255,255,255,.5); text-decoration: none;
    font-weight: 600; transition: color 0.2s;
    margin-bottom: 6px;
    padding-left: 10px;
  }
  .footer-col > a:hover { color: #fff; }
  .footer-local-nav {
    padding: 32px 40px 24px;
    display: grid;
    grid-template-columns: repeat(5, auto);
    gap: 12px 28px;
    justify-content: start;
    border-bottom: 1px solid rgba(255,255,255,.1);
  }
  .footer-local-nav a {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px; color: rgba(255,255,255,.7); text-decoration: none;
    font-weight: 600; transition: color 0.2s;
  }
  .footer-local-nav a:hover { color: #fff; }
  .footer-corporate {
    padding: 20px 40px;
    display: flex; flex-wrap: wrap; gap: 8px 24px;
  }
  .footer-corporate a {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px; color: rgba(255,255,255,.4); text-decoration: none;
    font-weight: 500; transition: color 0.2s;
  }
  .footer-corporate a:hover { color: #fff; }
  .footer-col-title {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 13px; color: #fff; font-weight: 600;
    margin-bottom: 12px; letter-spacing: 0.04em;
  }
  .footer-col-title a { color: #fff; text-decoration: none; }
  .footer-col-title a:hover { opacity: 0.8; }
  .footer-col ul { list-style: none; padding: 0; margin: 0; }
  .footer-col li { margin-bottom: 6px; }
  .footer-col li a {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px; color: rgba(255,255,255,.5); text-decoration: none;
    font-weight: 600; transition: color 0.2s;
  }
  .footer-col li a:hover { color: #fff; }
  .footer-links {
    padding: 24px 40px;
    display: flex; flex-wrap: wrap; gap: 8px 20px;
    border-bottom: 1px solid rgba(255,255,255,.1);
  }
  .footer-links a {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px; color: rgba(255,255,255,.5); text-decoration: none;
    font-weight: 600; transition: color 0.2s;
  }
  .footer-links a:hover { color: #fff; }
  .footer-links .sep { display: none; }
  .footer-bottom {
    text-align: center; padding: 28px 40px;
    font-family: 'Inter', sans-serif;
    font-size: 11px; color: rgba(255,255,255,.3);
    letter-spacing: 0.08em;
  }
  /* Footer SNS */
  .footer-sns {
    padding: 24px 40px;
    display: flex; flex-wrap: wrap;
    gap: 10px 24px;
    border-bottom: 1px solid rgba(255,255,255,.1);
  }
  .footer-sns a, .footer-sns a:link, .footer-sns a:visited {
    display: inline-flex; align-items: center; gap: 6px;
    color: rgba(255,255,255,.6); text-decoration: none;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px; font-weight: 600;
    transition: color 0.2s; line-height: 1;
  }
  .footer-sns a svg { flex-shrink: 0; vertical-align: middle; }
  .footer-sns a:hover { color: #fff; }
  .footer-sns a::after { display: none !important; }


  /* ===== ページトップへ戻るボタン ===== */
  .back-to-top {
    position: fixed; bottom: 32px; right: 100px;
    background: #1a1a1a; color: #fff; border: none;
    width: 48px; height: 48px; font-size: 16px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; z-index: 250; text-decoration: none;
    opacity: 0; transition: opacity .3s, background .2s; pointer-events: none;
    box-shadow: 0 2px 12px rgba(0,0,0,.15);
    border-radius: 50%;
  }
  .back-to-top.show { opacity: 1; pointer-events: auto; }
  .back-to-top:hover { background: #333; }

  /* ===== SDC Scroll Popup ===== */
  .sdc-popup-overlay {
    position: fixed; inset: 0; z-index: 900;
    background: rgba(0,0,0,.55); backdrop-filter: blur(3px);
    opacity: 0; visibility: hidden;
    transition: opacity .4s, visibility .4s;
  }
  .sdc-popup-overlay.open { opacity: 1; visibility: visible; }
  .sdc-popup {
    position: fixed; z-index: 910;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%) scale(.92);
    width: 560px; max-width: 92vw;
    background: linear-gradient(165deg, #0a0f1a 0%, #0d1525 40%, #1e3a5f 100%);
    box-shadow: 0 24px 80px rgba(0,0,0,.6);
    padding: 0; overflow: hidden;
    opacity: 0; visibility: hidden;
    transition: opacity .5s, visibility .5s, transform .5s cubic-bezier(.16,1,.3,1);
  }
  .sdc-popup-overlay.open + .sdc-popup,
  .sdc-popup.open { opacity: 1; visibility: visible; transform: translate(-50%, -50%) scale(1); }
  .sdc-popup::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 1px; background: linear-gradient(to right, transparent, #3a7ab5, transparent);
  }
  .sdc-popup-close {
    position: absolute; top: 18px; right: 20px;
    background: none; border: none; color: rgba(255,255,255,.4);
    font-size: 22px; cursor: pointer; z-index: 2;
    transition: color .2s; line-height: 1;
  }
  .sdc-popup-close:hover { color: rgba(255,255,255,.8); }
  .sdc-popup-body { padding: 56px 48px 48px; text-align: center; }
  .sdc-popup-eyebrow {
    font-family: 'Inter', sans-serif; font-size: 10px; font-weight: 500;
    letter-spacing: 5px; color: rgba(255,255,255,.35);
    margin-bottom: 18px; text-transform: uppercase;
  }
  .sdc-popup-title {
    font-family: 'Noto Serif JP', serif; font-size: 30px; font-weight: 400;
    color: #fff; margin-bottom: 8px; letter-spacing: 2px; line-height: 1.4;
  }
  .sdc-popup-sub {
    font-family: 'Inter', sans-serif; font-size: 11px; font-weight: 400;
    letter-spacing: 4px; color: #3a7ab5; margin-bottom: 28px;
  }
  .sdc-popup-divider {
    width: 48px; height: 1px; margin: 0 auto 28px;
    background: linear-gradient(to right, transparent, rgba(255,255,255,.25), transparent);
  }
  .sdc-popup-desc {
    font-family: 'Noto Sans JP', sans-serif; font-size: 14px; font-weight: 300;
    color: rgba(255,255,255,.55); line-height: 2.0; margin-bottom: 32px;
  }
  .sdc-popup-benefits {
    display: flex; justify-content: center; gap: 36px; margin-bottom: 36px;
  }
  .sdc-popup-benefit {
    text-align: center; font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px; color: rgba(255,255,255,.5); font-weight: 300;
  }
  .sdc-popup-benefit-icon {
    display: block; font-size: 24px; margin-bottom: 8px; color: rgba(255,255,255,.35);
  }
  .sdc-popup-btn {
    display: inline-block; padding: 18px 56px;
    border: 1px solid rgba(255,255,255,.3); background: transparent;
    color: #fff; font-family: 'Inter', sans-serif; font-size: 13px;
    font-weight: 400; letter-spacing: 3px; text-decoration: none;
    cursor: pointer; transition: background .3s, color .3s;
  }
  .sdc-popup-btn:hover { background: rgba(255,255,255,.1); }
  .sdc-popup-login {
    display: block; margin-top: 18px;
    font-family: 'Noto Sans JP', sans-serif; font-size: 12px;
    color: rgba(255,255,255,.35); text-decoration: none;
    transition: color .2s;
  }
  .sdc-popup-login:hover { color: rgba(255,255,255,.6); }

  /* トースト */
  #toast {
    position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
    background: #1a1a1a; color: #fff; padding: 12px 24px; font-size: 13px;
    font-family: 'Noto Sans JP', sans-serif; font-weight: 300;
    opacity: 0; transition: opacity .3s; pointer-events: none; z-index: 999;
    white-space: nowrap; border-radius: 4px;
    box-shadow: 0 4px 16px rgba(0,0,0,.15);
  }
  #toast.show { opacity: 1; }

  /* ===== Sidebar Layout ===== */
  .content-with-sidebar {
    display: grid;
    grid-template-columns: 1fr 280px !important;
    gap: 48px;
    max-width: 1600px; margin: 0 auto; padding: 0 40px;
  }
  .content-main { min-width: 0; }
  .content-sidebar { position: relative; }
  .sidebar-sticky { position: sticky; top: 80px; margin-top: 24px; }
  .sidebar-sdclub {
    background: #0a0a0a; color: #fff; padding: 64px 28px 72px;
    text-align: center; text-decoration: none; display: block;
    transition: background 0.3s;
  }
  .sidebar-sdclub:hover { background: #1a1a1a; }
  .sidebar-sdclub .sidebar-label {
    font-family: 'Inter', sans-serif;
    font-size: 10px; letter-spacing: 0.2em; color: rgba(255,255,255,.5);
    margin-bottom: 20px; text-transform: uppercase;
  }
  .sidebar-sdclub .sidebar-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 26px; font-weight: 600; line-height: 1.5;
    margin-bottom: 20px;
  }
  .sidebar-sdclub .sidebar-desc {
    font-size: 12px; color: rgba(255,255,255,.6); line-height: 1.8;
    margin-bottom: 28px; font-weight: 600;
  }
  .sidebar-sdclub .sidebar-btn {
    display: inline-block; border: 1px solid rgba(255,255,255,.35);
    padding: 12px 28px; font-size: 11px; color: #fff;
    letter-spacing: 0.1em; transition: all 0.3s;
  }
  .sidebar-sdclub:hover .sidebar-btn { border-color: #fff; }

  /* ===== Scroll Reveal Animation ===== */
  .reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.9s cubic-bezier(0.25,0.46,0.45,0.94),
                transform 0.9s cubic-bezier(0.25,0.46,0.45,0.94);
  }
  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }
  .reveal .card {
    opacity: 0; transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .reveal.visible .card {
    opacity: 1; transform: translateY(0);
  }
  .reveal.visible .card:nth-child(1) { transition-delay: 0.05s; }
  .reveal.visible .card:nth-child(2) { transition-delay: 0.1s; }
  .reveal.visible .card:nth-child(3) { transition-delay: 0.15s; }
  .reveal.visible .card:nth-child(4) { transition-delay: 0.2s; }
  .reveal.visible .card:nth-child(5) { transition-delay: 0.25s; }
  .reveal.visible .card:nth-child(6) { transition-delay: 0.3s; }
  /* ===== Search Overlay (TOP統一版) ===== */
  .search-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,.5); z-index: 500;
    align-items: center; justify-content: center;
    padding: 24px; backdrop-filter: blur(4px);
  }
  .search-overlay.open { display: flex; }
  .search-box {
    background: #fff;
    padding: 40px 48px 48px;
    width: 840px; max-width: 94vw;
    max-height: 88vh; overflow-y: auto;
    border: none; box-shadow: 0 16px 48px rgba(0,0,0,.12);
  }
  .search-box-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 28px;
  }
  .search-box-header h3 {
    font-family: 'Noto Serif JP', serif;
    font-size: 20px; font-weight: 600; color: #1a1a1a;
  }
  .search-close {
    font-size: 20px; color: #ccc; cursor: pointer; line-height: 1;
    transition: color 0.2s;
  }
  .search-close:hover { color: #1a1a1a; }
  .search-input-row { display: flex; gap: 0; margin-bottom: 32px; }
  .search-input-row input {
    flex: 1; border: 1px solid #e8e8e8; border-right: none;
    padding: 14px 20px; font-size: 15px; outline: none;
    font-family: 'Noto Sans JP', sans-serif; font-weight: 600;
    transition: border-color 0.3s;
  }
  .search-input-row input:focus { border-color: #2c5f8a; }
  .search-input-row button {
    border: 1px solid #1a1a1a; background: #1a1a1a; color: #fff;
    padding: 14px 36px; font-size: 13px; cursor: pointer; white-space: nowrap;
    font-family: 'Noto Sans JP', sans-serif; font-weight: 600;
    letter-spacing: 0.06em; transition: background 0.3s;
  }
  .search-input-row button:hover { background: #333; }
  .search-section-title {
    font-family: 'Inter', sans-serif;
    font-size: 10px; color: #666; font-weight: 600;
    letter-spacing: 0.15em; text-transform: uppercase;
    border-bottom: 1px solid #f0f0f0; padding-bottom: 8px; margin-bottom: 14px;
  }
  .search-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; }
  .search-tag {
    border: 1px solid #e8e8e8; padding: 6px 16px;
    font-size: 12px; color: #666; cursor: pointer; text-decoration: none;
    font-family: 'Noto Sans JP', sans-serif; font-weight: 600;
    transition: all 0.2s;
  }
  .search-tag:hover { background: #f7f7f5; border-color: #ccc; color: #1a1a1a; }
  .search-cats { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
  .search-cat-btn {
    flex: 1; min-width: 90px; max-width: 120px;
    border: 1px solid #e8e8e8; padding: 16px 8px;
    text-align: center; cursor: pointer; text-decoration: none;
    color: #1a1a1a; font-size: 12px; background: #fff;
    font-family: 'Noto Sans JP', sans-serif; font-weight: 600;
    transition: all 0.25s;
  }
  .search-cat-btn:hover { background: #1a1a1a; color: #fff; border-color: #1a1a1a; }
  .search-cat-symbol {
    font-family: 'Inter', sans-serif; font-size: 16px;
    margin-bottom: 8px; color: #666; display: block;
    font-weight: 600; letter-spacing: 0.08em;
  }
  .search-cat-btn:hover .search-cat-symbol { color: #fff; }
  .search-sdc-banner {
    border: none; background: #1a1a1a; color: #fff;
    padding: 28px 32px; margin-bottom: 32px;
    display: flex; align-items: center; justify-content: space-between; gap: 24px;
  }
  .search-sdc-label {
    font-family: 'Inter', sans-serif;
    font-size: 10px; color: #666; letter-spacing: 0.15em; margin-bottom: 6px;
  }
  .search-sdc-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 20px; font-weight: 600; color: #fff; margin-bottom: 6px;
  }
  .search-sdc-desc { font-size: 12px; color: #666; font-weight: 600; }
  .search-sdc-btn {
    border: 1px solid rgba(255,255,255,.3); color: #fff; background: transparent;
    padding: 10px 24px; font-size: 12px; white-space: nowrap;
    cursor: pointer; text-decoration: none; flex-shrink: 0;
    font-family: 'Noto Sans JP', sans-serif; font-weight: 600;
    letter-spacing: 0.06em; transition: all 0.3s;
  }
  .search-sdc-btn:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.6); }
  /* Featured Articles — サムネイル小・タイトル大バージョン */
  .search-featured { }
  .search-feat-card {
    display: flex; gap: 16px; align-items: center;
    padding: 14px 0; border-bottom: 1px solid #f0f0f0;
    cursor: pointer; text-decoration: none; color: inherit;
    transition: opacity 0.3s;
  }
  .search-feat-card:last-child { border-bottom: none; }
  .search-feat-card:hover { opacity: 0.7; }
  .search-feat-img {
    width: 80px; height: 54px; flex-shrink: 0;
    background: #e0ddd8; overflow: hidden;
    display: flex; align-items: center; justify-content: center;
    font-size: 10px; color: #888;
  }
  .search-feat-body { flex: 1; min-width: 0; }
  .search-feat-cat {
    font-family: 'Inter', sans-serif;
    font-size: 10px; color: #2c5f8a; margin-bottom: 4px;
    letter-spacing: 0.08em;
  }
  .search-feat-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 15px; color: #1a1a1a; line-height: 1.5; font-weight: 600;
  }