/* ===========================
   TableSource Theme - Main CSS
   Ref: table-source.jp
   =========================== */

/* ---------- CSS Variables ---------- */
:root {
  --color-primary:    #3f2b24;
  --color-secondary:  #3f2b24;
  --color-accent:     #b7b2b0;
  --color-hover:      #b7b2b0;
  --color-bg:         #ffffff;
  --color-bg-gray:    #f7f7f7;
  --color-white:      #ffffff;
  --color-gray-100:   #f7f7f7;
  --color-gray-200:   #eeeeee;
  --color-gray-300:   #dddddd;
  --color-gray-400:   #aaaaaa;
  --color-gray-600:   #777777;
  --color-text:       #4f4f4f;
  --color-text-light: #777777;
  --color-heading:    #333333;
  --color-border:     rgba(89,62,8,.16);

  --font-sans: 'Open Sans', 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;

  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-md:   1.0625rem;
  --fs-lg:   1.25rem;
  --fs-xl:   1.4375rem;
  --fs-2xl:  1.875rem;
  --fs-3xl:  2.25rem;

  --lh-base:   1.75;
  --lh-tight:  1.3;

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  --radius-sm: 3px;
  --radius-md: 6px;
  --shadow-sm: 0 1px 4px rgba(0,0,0,.08);
  --shadow-md: 0 3px 12px rgba(0,0,0,.12);

  --transition: 0.2s ease;
  --container-max: 1200px;
  --sidebar-width: 280px;
  --header-h: 100px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.75;
  letter-spacing: .06em;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-hover); }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; border: none; background: none; }

/* ---------- Layout ---------- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.site-wrapper { display: flex; flex-direction: column; min-height: 100vh; }
.site-main { flex: 1; padding-top: var(--space-10); padding-bottom: var(--space-16); }

/* Two-column with sidebar */
.layout-with-sidebar {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--space-10);
  align-items: start;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid rgba(238,238,238,1);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

/* Logo */
.site-logo a {
  display: flex;
  flex-direction: column;
  color: var(--color-heading);
  line-height: 1;
}
.site-logo .logo-text {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: .02em;
}
.site-logo .logo-tagline {
  font-size: 10px;
  font-weight: 700;
  text-align: center;
  color: var(--color-text-light);
  margin-top: 4px;
  letter-spacing: .08em;
}
.site-logo img { height: 50px; width: auto; }

/* Navigation */
.primary-nav { display: flex; align-items: center; gap: var(--space-1); }
.primary-nav ul { display: flex; align-items: center; gap: 0; }
.primary-nav li { position: relative; }
.primary-nav > ul > li > a {
  display: flex;
  align-items: center;
  padding: 0 10px;
  height: var(--header-h);
  line-height: var(--header-h);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: #373737;
  letter-spacing: .04em;
  white-space: nowrap;
  transition: color var(--transition);
}
.primary-nav > ul > li > a:hover,
.primary-nav .current-menu-item > a { color: var(--color-hover); }

/* Dropdown */
.primary-nav .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-md);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition);
}
.primary-nav li:hover > .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.primary-nav .sub-menu a {
  display: block;
  padding: 10px 16px;
  font-size: var(--fs-xs);
  color: #373737;
  border-bottom: 1px solid var(--color-gray-100);
}
.primary-nav .sub-menu a:hover { background: var(--color-gray-100); color: var(--color-primary); }

/* Search icon */
.header-search { display: flex; align-items: center; gap: var(--space-2); }
.header-search-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #373737;
  font-size: 1rem;
  transition: color var(--transition);
}
.header-search-btn:hover { color: var(--color-hover); }

/* Search form overlay */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.7);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all .3s ease;
}
.search-overlay.is-open { opacity: 1; visibility: visible; }
.search-overlay-inner {
  background: var(--color-white);
  padding: var(--space-8);
  border-radius: var(--radius-md);
  width: min(560px, 90vw);
}
.search-overlay-form {
  display: flex;
  border: 2px solid var(--color-primary);
  border-radius: 3px;
  overflow: hidden;
}
.search-overlay-input {
  flex: 1;
  border: none;
  outline: none;
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-base);
}
.search-overlay-submit {
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--fs-sm);
  font-weight: 600;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--color-heading);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  inset: var(--header-h) 0 0;
  background: var(--color-white);
  z-index: 99;
  padding: var(--space-6);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform .3s ease;
}
.mobile-nav.is-open { transform: translateX(0); }
.mobile-nav ul { display: flex; flex-direction: column; }
.mobile-nav a {
  display: block;
  padding: var(--space-4);
  font-size: var(--fs-base);
  font-weight: 500;
  border-bottom: 1px solid var(--color-gray-200);
  color: #373737;
}
.mobile-nav a:hover { color: var(--color-primary); }
.mobile-nav .sub-menu { padding-left: var(--space-4); }
.mobile-nav .sub-menu a { font-size: var(--fs-sm); }

/* ---------- Tag Cloud (TOP) ---------- */
.tag-cloud-wrap {
  padding: var(--space-10) 0 var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2) var(--space-4);
}
.tag-cloud a {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-heading);
  letter-spacing: .04em;
  transition: color var(--transition);
}
.tag-cloud a:hover { color: var(--color-primary); }

/* ---------- Section Commons ---------- */
.section { padding-block: var(--space-12); }
.section-alt { background: var(--color-bg-gray); }

.section-heading {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-heading);
  letter-spacing: .06em;
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-3);
  border-bottom: 5px dotted rgba(89,62,8,.3);
  margin-bottom: var(--space-4);
}
.section-footer {
  text-align: center;
  margin-top: var(--space-8);
}

/* Read More Button */
.btn-readmore {
  display: inline-block;
  padding: var(--space-2) var(--space-8);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-white);
  transition: all var(--transition);
  letter-spacing: .04em;
}
.btn-readmore:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* ---------- Post Cards (3-column grid) ---------- */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.post-card { display: flex; flex-direction: column; }
.post-card-thumbnail {
  display: block;
  aspect-ratio: 3/2;
  overflow: hidden;
  position: relative;
  background: var(--color-gray-200);
}
.post-card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.post-card-thumbnail:hover img { transform: scale(1.05); }
.post-card-body { padding: var(--space-4) 0; flex: 1; display: flex; flex-direction: column; }
.post-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
  font-size: var(--fs-xs);
}
.post-card-cat {
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: .04em;
}
.post-card-date { color: var(--color-gray-400); }
.post-card-title {
  font-size: var(--fs-sm);
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-heading);
}
.post-card-title a:hover { color: var(--color-primary); }

/* ---------- Magazine Layout (TOP sections) ---------- */
.magazine-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

/* Featured (left big card) */
.mag-featured { position: relative; }
.mag-featured-thumb {
  display: block;
  aspect-ratio: 4/3;
  overflow: hidden;
}
.mag-featured-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.mag-featured-thumb:hover img { transform: scale(1.04); }
.mag-featured-body { padding: var(--space-4) 0; }
.mag-featured-date { font-size: var(--fs-xs); color: var(--color-gray-400); margin-bottom: var(--space-2); }
.mag-featured-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-heading);
  letter-spacing: .02em;
}
.mag-featured-title a:hover { color: var(--color-primary); }

/* List (right side) */
.mag-list { display: flex; flex-direction: column; gap: var(--space-4); }
.mag-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-gray-200);
}
.mag-item:last-child { border-bottom: none; }
.mag-item-thumb {
  flex-shrink: 0;
  width: 70px;
  height: 70px;
  overflow: hidden;
  border-radius: var(--radius-sm);
}
.mag-item-thumb img { width: 100%; height: 100%; object-fit: cover; }
.mag-item-body { flex: 1; }
.mag-item-title {
  font-size: var(--fs-sm);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-heading);
  margin-bottom: var(--space-1);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.mag-item-title a:hover { color: var(--color-primary); }
.mag-item-date { font-size: var(--fs-xs); color: var(--color-gray-400); }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  background: var(--color-gray-100);
  border-bottom: 1px solid var(--color-gray-200);
  padding-block: var(--space-3);
}
.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  font-size: var(--fs-xs);
  color: #878787;
}
.breadcrumb li + li::before { content: '/'; margin-right: var(--space-2); }
.breadcrumb a { color: #878787; transition: color var(--transition); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb .current { color: var(--color-text); }

/* ---------- Archive Page ---------- */
.archive-header {
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-gray-200);
  margin-bottom: var(--space-8);
}
.archive-label {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.archive-title {
  font-size: var(--fs-2xl);
  font-weight: 700;
  color: var(--color-heading);
  letter-spacing: .02em;
}
.archive-desc {
  margin-top: var(--space-3);
  font-size: var(--fs-base);
  color: var(--color-text-light);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-12);
}
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding-inline: var(--space-2);
  border: 1px solid var(--color-gray-300);
  background: var(--color-white);
  color: var(--color-text);
  font-size: var(--fs-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.pagination a:hover { border-color: var(--color-primary); color: var(--color-primary); }
.pagination .current {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* ---------- Single Article ---------- */
.article-header { margin-bottom: var(--space-6); }
.article-cats { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-bottom: var(--space-3); }
.article-cat-badge {
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: .04em;
}
.article-title {
  font-size: clamp(1.25rem, 2.5vw, var(--fs-2xl));
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .02em;
  color: var(--color-heading);
  margin-bottom: var(--space-4);
}
.article-info {
  font-size: var(--fs-xs);
  color: var(--color-gray-400);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-gray-200);
}
.article-info a { color: var(--color-gray-400); }
.article-info a:hover { color: var(--color-primary); }

.article-thumbnail {
  margin-bottom: var(--space-6);
}
.article-thumbnail img { width: 100%; height: auto; }

/* Share Buttons (top / bottom) */
.share-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-gray-200);
  border-bottom: 1px solid var(--color-gray-200);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.share-buttons.bottom { margin-top: var(--space-6); margin-bottom: 0; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: 3px;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-white);
  transition: opacity var(--transition);
}
.share-btn:hover { opacity: .85; color: var(--color-white); }
.share-btn.facebook { background: var(--color-primary); }
.share-btn.twitter  { background: var(--color-primary); }
.share-btn.copy     { background: var(--color-primary); }
.share-btn.line     { background: var(--color-primary); }

.art {
  padding-bottom: 10px;
}

.article-body {
  font-size: var(--fs-base);
  line-height: 1.75;
  letter-spacing: .06em;
  color: var(--color-text);
}

.article-body h1 {
  font-size: 1.7em;
  font-weight: 700;
  margin-bottom: 15px;
}

.article-body h2 {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-heading);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 3px solid var(--color-gray-200);
}
.article-body h3 {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-heading);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}
.article-body h4 {
  font-size: var(--fs-md);
  font-weight: 600;
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}
.article-body p { margin-bottom: var(--space-5); }
.article-body ul, .article-body ol {
  margin-bottom: var(--space-5);
  padding-left: var(--space-6);
}
.article-body li { margin-bottom: var(--space-2); }
.article-body ul li { list-style: disc; }
.article-body ol li { list-style: decimal; }
.article-body a { color: var(--color-primary); }
.article-body a:hover { text-decoration: underline; }
.article-body mark { background: rgba(63,43,36,.1); padding: 1px 3px; }
.article-body blockquote {
  margin-block: var(--space-6);
  padding: var(--space-4) var(--space-6);
  background: var(--color-gray-100);
  border-left: 4px solid var(--color-primary);
  font-style: italic;
  color: var(--color-text-light);
}
.article-body img {
  max-width: 100%;
  height: auto;
  margin-block: var(--space-6);
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin-block: var(--space-6);
  font-size: var(--fs-sm);
}
.article-body th, .article-body td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border: 1px solid var(--color-gray-300);
}
.article-body th { background: var(--color-gray-100); font-weight: 700; }
.article-body pre {
  background: #1e1e1e;
  color: #f1f1f1;
  padding: var(--space-6);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-block: var(--space-6);
  font-size: var(--fs-sm);
  line-height: 1.6;
}
.article-body code {
  background: var(--color-gray-100);
  padding: 1px 5px;
  border-radius: 3px;
  font-size: .88em;
  color: #c44;
}
.article-body pre code { background: none; color: inherit; padding: 0; }

@media (max-width: 768px) {
  img, iframe { max-width: 100%; height: auto; }
  table { display: block; overflow-x: auto; }
  pre { overflow-x: auto; }
  .article-body table { display: block; overflow-x: auto; max-width: 325px; }
  .article-body pre code { overflow-x: auto;}
}


/* Tags */
.article-tags {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-gray-200);
  font-size: var(--fs-xs);
}
.article-tags .tags-label { font-weight: 700; color: var(--color-text-light); }
.tag-item {
  color: var(--color-primary);
  transition: opacity var(--transition);
}
.tag-item:hover { opacity: .75; }
.tag-item::before { content: '# '; opacity: .5; }

/* Author Box */
.author-box {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
  padding: var(--space-6);
  background: var(--color-gray-100);
  border-radius: var(--radius-md);
  margin-top: var(--space-8);
}
.author-avatar {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-gray-200);
}
.author-avatar img { width: 100%; height: 100%; object-fit: cover; }
.author-name { font-size: var(--fs-md); font-weight: 700; margin-bottom: var(--space-2); color: var(--color-heading); }
.author-bio { font-size: var(--fs-sm); color: var(--color-text-light); line-height: 1.7; }

/* Post Share (icon style) */
.post-share {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.post-share .share-label { font-size: var(--fs-xs); font-weight: 700; color: var(--color-text-light); }
.share-icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 3px;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-xs);
  font-weight: 700;
  transition: opacity var(--transition);
}
.share-icon-btn:hover { opacity: .8; color: var(--color-white); }

/* Post Navigation */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-gray-200);
}
.post-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--color-gray-100);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-text);
  transition: background var(--transition);
}
.post-nav-item:hover { background: var(--color-gray-200); }
.post-nav-item.next { justify-content: flex-end; text-align: right; }
.post-nav-label { color: var(--color-primary); }

/* Related Posts */
.related-posts { margin-top: var(--space-12); }
.related-posts-title {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 3px solid var(--color-gray-200);
}

/* Related: first post is big card, rest are list */
.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}
.related-featured .related-thumb {
  display: block;
  aspect-ratio: 4/3;
  overflow: hidden;
  margin-bottom: var(--space-3);
}
.related-featured .related-thumb img { width: 100%; height: 100%; object-fit: cover; }
.related-featured .related-title {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1.4;
  margin-bottom: var(--space-3);
}
.related-featured .related-excerpt {
  font-size: var(--fs-sm);
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}
.related-featured a.readmore {
  display: inline-block;
  padding: var(--space-2) var(--space-5);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-text);
  transition: all var(--transition);
}
.related-featured a.readmore:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}
.related-list { display: flex; flex-direction: column; gap: var(--space-4); }
.related-item {
  display: flex;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-gray-200);
}
.related-item:last-child { border-bottom: none; }
.related-item-thumb {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  overflow: hidden;
  border-radius: var(--radius-sm);
}
.related-item-thumb img { width: 100%; height: 100%; object-fit: cover; }
.related-item-title {
  font-size: var(--fs-xs);
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-heading);
  margin-bottom: var(--space-1);
}
.related-item-title a:hover { color: var(--color-primary); }
.related-item-meta {
  font-size: 11px;
  color: var(--color-gray-400);
}

/* ---------- Sidebar ---------- */
.sidebar { position: sticky; top: calc(var(--header-h) + 20px); }
.widget {
  margin-bottom: var(--space-8);
}
.widget-title {
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--color-heading);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-gray-200);
}
.widget-title span { border-bottom: 2px solid var(--color-primary); padding-bottom: var(--space-3); }

/* SNS Widget */
.sns-list {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.sns-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-gray-100);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--color-text);
  transition: all var(--transition);
}
.sns-link:hover { background: var(--color-primary); color: var(--color-white); }

/* Recent Posts Widget */
.sidebar-posts-list { display: flex; flex-direction: column; }
.sidebar-post-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-gray-100);
}
.sidebar-post-thumb {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--color-gray-200);
}
.sidebar-post-thumb img { width: 100%; height: 100%; object-fit: cover; }
.sidebar-post-title {
  font-size: var(--fs-xs);
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-heading);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.sidebar-post-title a:hover { color: var(--color-primary); }

/* Sidebar Tag Cloud */
.sidebar-tag-cloud { display: flex; flex-wrap: wrap; gap: .5rem; }
.sidebar-tag-item {
  display: inline-block;
  padding: .25rem .5rem;
  border: 1px solid var(--color-gray-300);
  border-radius: 3px;
  font-size: var(--fs-xs);
  color: var(--color-text);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.sidebar-tag-item:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* Sidebar Nav */
.sidebar-nav-list { display: flex; flex-direction: column; gap: 0; }
.sidebar-nav-list a {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-sm);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-gray-100);
  transition: all var(--transition);
}
.sidebar-nav-list a:hover {
  color: var(--color-primary);
  padding-left: calc(var(--space-4) + 4px);
}

/* Search Widget */
.sidebar-search-form {
  display: flex;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.sidebar-search-input {
  flex: 1;
  border: none;
  outline: none;
  padding: var(--space-2) var(--space-3);
  font-size: var(--fs-sm);
  background: var(--color-white);
}
.sidebar-search-submit {
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--fs-xs);
  font-weight: 700;
  transition: opacity var(--transition);
}
.sidebar-search-submit:hover { opacity: .85; }

/* ---------- 404 ---------- */
.error-page { text-align: center; padding-block: var(--space-16); }
.error-code {
  font-size: 8rem;
  font-weight: 900;
  line-height: 1;
  color: var(--color-gray-200);
  letter-spacing: -.05em;
}
.error-title { font-size: var(--fs-2xl); font-weight: 700; margin-block: var(--space-4); }
.error-desc { font-size: var(--fs-base); color: var(--color-text-light); margin-bottom: var(--space-8); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,.8);
}
.footer-main {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  padding-block: var(--space-12);
  border-bottom: 1px solid rgba(255,255,255,.15);
}
.footer-col-title {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--color-white);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid rgba(255,255,255,.2);
}
.footer-col p {
  font-size: var(--fs-xs);
  line-height: 1.8;
  color: rgba(255,255,255,.65);
}
.footer-links { display: flex; flex-direction: column; gap: var(--space-2); }
.footer-links a {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.65);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-white); }

.footer-social-list { display: flex; flex-direction: column; gap: var(--space-2); }
.footer-social-list a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.65);
  transition: color var(--transition);
}
.footer-social-list a:hover { color: var(--color-white); }

.footer-bottom {
  padding-block: var(--space-6);
  text-align: center;
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.4);
  line-height: 1.8;
}
.footer-bottom a { color: rgba(255,255,255,.5); text-decoration: underline; }

/* ---------- Page Template ---------- */
.page-header {
  background: var(--color-gray-100);
  padding-block: var(--space-10);
  margin-bottom: var(--space-8);
}
.page-title { font-size: var(--fs-2xl); font-weight: 700; color: var(--color-heading); }
.page-content { font-size: var(--fs-base); line-height: 1.9; }
.page-content h2 {
  font-size: var(--fs-xl);
  font-weight: 700;
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-gray-200);
}
.page-content p { margin-bottom: var(--space-4); }

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s;
  z-index: 50;
  cursor: pointer;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }

/* ---------- Accessibility ---------- */
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .layout-with-sidebar { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .magazine-wrap { grid-template-columns: 1fr; }
  .mag-featured .mag-featured-thumb { aspect-ratio: 16/9; }
}
@media (max-width: 768px) {
  .posts-grid { grid-template-columns: 1fr; }
  .primary-nav { display: none; }
  .hamburger { display: flex; }
  .mobile-nav { display: block; }
  .footer-main { grid-template-columns: 1fr; gap: var(--space-6); }
  .related-grid { grid-template-columns: 1fr; }
  .post-nav { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .container { padding-inline: var(--space-4); }
  :root { --header-h: 70px; }
}