/*
Theme Name: AFFINGER4 Child — namae-studio column
Theme URI: https://column.namae-studio.com/
Description: column.namae-studio.com 専用 AFFINGER4 子テーマ。本体 namae-studio.com の和モダン×ぬくもりデザインを継承。Zen Maru Gothic + Noto Sans JP、テラコッタ/セージ/ゴールドのカラーパレット、BEM 命名で統一。
Author: namae-studio
Author URI: https://namae-studio.com/
Template: affinger4
Version: 1.4.0
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: affinger4-child
*/

/* =======================================================================
   Design Tokens — 本体 css/variables.css からポート
   ======================================================================= */

:root {
  /* ---- Color palette ---- */
  --color-terracotta: #E8725C;
  --color-terracotta-light: #F2937F;
  --color-terracotta-dark: #D05A46;
  --color-sage: #6EC4A8;
  --color-sage-dark: #4FA888;
  --color-gold: #F0B84D;
  --color-gold-light: #F6CF7E;
  --color-cream: #FFF8F0;
  --color-cream-warm: #FFF0E1;
  --color-white: #FFFFFF;
  --color-dark: #3D3029;
  --color-medium: #5C4F44;
  --color-muted: #8A7D73;
  --color-border: #EDE5DA;
  --color-card-border: #EDE5DA;
  --color-divider: #EDE5DA;

  /* ---- Fonts ---- */
  --font-heading: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", serif;
  --font-body: "Noto Sans JP", "Hiragino Sans", sans-serif;

  /* ---- Font sizes ---- */
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 18px;
  --text-xl: 20px;
  --text-2xl: 24px;
  --text-3xl: 32px;
  --text-4xl: 40px;

  /* ---- Weights ---- */
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-bold: 700;
  --weight-black: 900;

  /* ---- Spacing ---- */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* ---- Radius ---- */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  /* ---- Shadows ---- */
  --shadow-card: 0 2px 8px rgba(61, 48, 41, 0.08);
  --shadow-card-hover: 0 8px 24px rgba(61, 48, 41, 0.12);
  --shadow-sm: 0 1px 3px rgba(61, 48, 41, 0.06);
  --shadow-md: 0 4px 12px rgba(61, 48, 41, 0.10);

  /* ---- Transitions ---- */
  --transition-fast: 150ms ease-out;
  --transition-default: 300ms ease-out;
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* ---- Layout ---- */
  --container-max: 1200px;
  --container-content: 720px;
  --sidebar-width: 300px;
  --gutter: 24px;
}

/* =======================================================================
   親テーマ初期化 — AFFINGER4 の装飾を無効化して書き直す
   ======================================================================= */

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: var(--weight-regular);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-dark);
  background-color: var(--color-cream);
  background-image:
    radial-gradient(rgba(232, 114, 92, 0.08) 1px, transparent 1px),
    radial-gradient(circle at 10% 20%, rgba(232, 114, 92, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(110, 196, 168, 0.04) 0%, transparent 40%);
  background-size: 20px 20px, auto, auto;
  background-attachment: fixed;
  margin: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-dark);
  line-height: 1.4;
  margin-top: 0;
}

a {
  color: var(--color-terracotta);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover,
a:focus {
  color: var(--color-terracotta-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
}

*:focus-visible {
  outline: 2px solid var(--color-terracotta);
  outline-offset: 2px;
}

.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  -webkit-clip-path: inset(50%);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute !important;
  width: 1px;
  word-wrap: normal !important;
}

/* =======================================================================
   Layout — 共通コンテナ
   ======================================================================= */

.container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
  width: 100%;
}

.site-wrap {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1;
  padding: var(--space-8) 0;
}

@media (min-width: 960px) {
  .site-main {
    padding: var(--space-10) 0;
  }
}

/* =======================================================================
   Site Header — グローバルナビ 6 項目、本体サイト .nav トーン
   ======================================================================= */

.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 10px rgba(61, 48, 41, 0.04);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-3) var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.site-header__brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
}

.site-header__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-black);
  color: var(--color-terracotta-dark);
  line-height: 1.2;
  margin: 0;
}

.site-header__tagline {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-muted);
  line-height: 1.4;
}

/* ---- Global navigation ---- */

.site-nav {
  display: none;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__item {
  margin: 0;
}

.site-nav__link,
.site-nav__list > li > a {
  display: inline-block;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-medium);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
  white-space: nowrap;
}

.site-nav__link:hover,
.site-nav__list > li > a:hover,
.site-nav__link:focus,
.site-nav__list > li > a:focus {
  color: var(--color-terracotta);
  background-color: rgba(232, 114, 92, 0.08);
}

.site-nav__link--active,
.site-nav__list > .current-menu-item > a,
.site-nav__list > .current_page_item > a {
  color: var(--color-terracotta-dark);
  font-weight: var(--weight-bold);
  position: relative;
}

.site-nav__list > .current-menu-item > a::after,
.site-nav__list > .current_page_item > a::after,
.site-nav__link--active::after {
  content: "";
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: 2px;
  height: 2px;
  background-color: var(--color-terracotta);
  border-radius: var(--radius-full);
}

/* ---- Mobile hamburger ---- */

.site-header__toggle {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.site-header__toggle:hover {
  background-color: var(--color-cream);
}

.site-header__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-dark);
  border-radius: var(--radius-full);
  transition: transform var(--transition-default), opacity var(--transition-default);
}

.site-header__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.site-header__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 960px) {
  .site-header__toggle {
    display: none;
  }
  .site-nav {
    display: block;
  }
  .site-nav__link,
  .site-nav__list > li > a {
    padding: var(--space-2) 10px;
    font-size: 13px;
  }
}

@media (min-width: 1200px) {
  .site-nav__link,
  .site-nav__list > li > a {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
  }
}

/* ---- Mobile drawer ---- */

@media (max-width: 959px) {
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: var(--space-3) var(--gutter) var(--space-4);
  }

  .site-nav--open {
    display: block;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
  }

  .site-nav__link,
  .site-nav__list > li > a {
    display: block;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    min-height: 44px;
  }

  .site-nav__list > .current-menu-item > a::after,
  .site-nav__list > .current_page_item > a::after,
  .site-nav__link--active::after {
    display: none;
  }

  body.is-drawer-open {
    overflow: hidden;
  }

  body.is-drawer-open::before {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.28);
    z-index: 30;
    pointer-events: none;
  }
}

/* =======================================================================
   Two-column layout — main + sidebar
   ======================================================================= */

.content-layout {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

@media (min-width: 960px) {
  .content-layout {
    flex-direction: row;
    gap: var(--space-10);
  }

  .content-layout__main {
    flex: 1;
    min-width: 0;
  }

  .content-layout__aside {
    width: var(--sidebar-width);
    flex-shrink: 0;
  }
}

/* =======================================================================
   Breadcrumb
   ======================================================================= */

.breadcrumb {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin: 0 0 var(--space-6);
  padding: 0;
}

.breadcrumb__list {
  list-style: none;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb__item::before,
.breadcrumb__item::marker {
  content: none;
  display: none;
}

.breadcrumb__link {
  color: var(--color-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb__link:hover {
  color: var(--color-terracotta);
}

.breadcrumb__sep {
  color: var(--color-border);
  font-size: 12px;
  margin: 0 var(--space-1);
}

.breadcrumb__current {
  color: var(--color-dark);
  font-weight: var(--weight-medium);
}

/* =======================================================================
   Page header (archive/listing)
   ======================================================================= */

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-6);
}

.page-header__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-black);
  color: var(--color-dark);
  margin: 0;
}

.page-header__count {
  font-size: var(--text-sm);
  color: var(--color-muted);
}

/* =======================================================================
   Article card — 記事一覧
   ======================================================================= */

.article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 600px) {
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.article-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 10px rgba(61, 48, 41, 0.06);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  transition:
    box-shadow var(--transition-default),
    transform var(--transition-default);
  text-decoration: none;
  color: inherit;
}

.article-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-terracotta), var(--color-gold), var(--color-sage));
  z-index: 2;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.article-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background-color: var(--color-cream-warm);
  overflow: hidden;
}

.article-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-default);
}

.article-card:hover .article-card__image {
  transform: scale(1.05);
}

.article-card__category {
  display: inline-block;
  align-self: flex-start;
  padding: 2px var(--space-2);
  margin-bottom: var(--space-1);
  background-color: var(--color-cream-warm);
  color: var(--color-terracotta);
  border: 1px solid rgba(198, 93, 61, 0.25);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  text-decoration: none;
}

.article-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.article-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  line-height: 1.5;
  color: var(--color-dark);
  margin: 0;
  min-height: calc(1.5em * 3);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition-fast);
}

.article-card:hover .article-card__title {
  color: var(--color-terracotta);
}

.article-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-medium);
  line-height: 1.7;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-muted);
}

/* =======================================================================
   Pagination
   ======================================================================= */

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-10);
  padding-top: var(--space-6);
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-medium);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast);
}

.pagination a:hover {
  color: var(--color-terracotta);
  border-color: var(--color-terracotta);
}

.pagination .current,
.pagination span.current {
  color: var(--color-white);
  background-color: var(--color-terracotta);
  border-color: var(--color-terracotta);
  box-shadow: var(--shadow-sm);
}

.pagination .dots {
  background: transparent;
  border: none;
}

/* =======================================================================
   Sidebar widgets
   ======================================================================= */

.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.widget {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.widget::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-terracotta), var(--color-gold), var(--color-sage));
}

.widget__title,
.widget .widget-title,
.widget h2,
.widget h3 {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  margin: 0 0 var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px dashed var(--color-border);
}

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

.widget li {
  padding: var(--space-2) 0;
  border-bottom: 1px solid rgba(237, 229, 218, 0.6);
  font-size: var(--text-sm);
}

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

.widget a {
  color: var(--color-medium);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: color var(--transition-fast);
}

.widget a::before {
  content: "";
  width: 6px;
  height: 6px;
  background-color: var(--color-terracotta);
  border-radius: 50%;
  flex-shrink: 0;
  transition: background-color var(--transition-fast);
}

.widget a:hover {
  color: var(--color-terracotta);
}

.widget a:hover::before {
  background-color: var(--color-gold);
}

/* Search form */
.widget .search-form,
.widget_search form {
  display: flex;
  gap: var(--space-2);
}

.widget input[type="search"],
.widget .search-field {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background-color: var(--color-cream);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.widget input[type="search"]:focus,
.widget .search-field:focus {
  outline: none;
  border-color: var(--color-terracotta);
  background-color: var(--color-white);
}

.widget .search-submit,
.widget input[type="submit"] {
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-terracotta), var(--color-terracotta-dark));
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.widget .search-submit:hover,
.widget input[type="submit"]:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* CTA card widget — text/html widget that mimics .card */
.widget--cta {
  text-align: center;
}

.widget--cta .widget__title {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: var(--space-2);
}

.widget--cta p {
  font-size: var(--text-sm);
  color: var(--color-medium);
  margin: 0 0 var(--space-4);
  line-height: 1.7;
}

/* =======================================================================
   Buttons
   ======================================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  min-height: 44px;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  line-height: 1;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition:
    background-color var(--transition-default),
    color var(--transition-default),
    border-color var(--transition-default),
    box-shadow var(--transition-default),
    transform var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-terracotta), var(--color-terracotta-dark));
  color: var(--color-white);
  border-color: var(--color-terracotta);
  box-shadow: 0 2px 8px rgba(196, 112, 75, 0.25);
}

.btn--primary:hover,
.btn--primary:focus {
  background: linear-gradient(135deg, var(--color-terracotta-light), var(--color-terracotta));
  color: var(--color-white);
  border-color: var(--color-terracotta-dark);
  box-shadow: 0 4px 16px rgba(232, 114, 92, 0.35);
  transform: translateY(-2px);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-terracotta);
  border-color: var(--color-terracotta);
}

.btn--outline:hover,
.btn--outline:focus {
  background-color: var(--color-terracotta);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn--block {
  display: flex;
  width: 100%;
}

.btn__arrow {
  display: inline-block;
  transition: transform var(--transition-fast);
}

.btn:hover .btn__arrow {
  transform: translateX(3px);
}

/* =======================================================================
   Article hero (single.php)
   ======================================================================= */

.article-hero {
  position: relative;
  max-width: var(--container-max);
  margin: 0 auto var(--space-6);
  padding: 0 var(--gutter);
  background: transparent;
}

.article-hero__media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 480px;
  overflow: hidden;
  background-color: var(--color-cream-warm);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 16px rgba(36, 25, 23, 0.06);
}

.article-hero__image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.article-hero__overlay {
  display: none;
}

.article-hero__inner {
  position: relative;
  padding: var(--space-4) 0 var(--space-1);
}

.article-hero__content {
  max-width: 720px;
}

.article-hero__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.article-hero__category {
  display: inline-block;
  padding: 4px var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.05em;
  color: var(--color-white);
  background-color: var(--color-terracotta);
  border-radius: var(--radius-full);
  text-decoration: none;
}

.article-hero__date {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-medium);
}

.article-hero__title {
  font-family: var(--font-heading);
  font-size: clamp(24px, 5vw, 36px);
  font-weight: var(--weight-black);
  line-height: 1.3;
  color: var(--color-dark);
  margin: 0;
  text-shadow: none;
}

@media (min-width: 768px) {
  .article-hero__inner {
    padding: var(--space-5) 0 var(--space-2);
  }
}

/* =======================================================================
   Article body (single.php)
   ======================================================================= */

.article-body {
  max-width: 720px;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.9;
  color: var(--color-dark);
}

.article-body p {
  margin: 1.5em 0;
}

.article-body h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  border-bottom: 3px solid var(--color-terracotta);
  padding-bottom: var(--space-2);
  margin-top: 2.5em;
  margin-bottom: 1em;
}

.article-body h3 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  border-left: 4px solid var(--color-terracotta);
  padding-left: var(--space-3);
  margin-top: 2em;
  margin-bottom: 0.8em;
}

.article-body h4 {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  margin-top: 1.5em;
  margin-bottom: 0.6em;
}

.article-body ul,
.article-body ol {
  margin: 1.5em 0;
  padding-left: var(--space-6);
}

.article-body ul {
  list-style: none;
  padding-left: 0;
}

.article-body ul > li {
  position: relative;
  padding-left: var(--space-5);
  margin-bottom: var(--space-2);
}

.article-body ul > li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.75em;
  width: 6px;
  height: 6px;
  background-color: var(--color-terracotta);
  border-radius: 50%;
}

.article-body ol > li {
  margin-bottom: var(--space-2);
}

.article-body blockquote {
  margin: 2em 0;
  padding: var(--space-5) var(--space-6);
  background-color: var(--color-cream);
  border-left: 4px solid var(--color-terracotta);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-medium);
  font-style: italic;
  box-shadow: var(--shadow-sm);
}

.article-body blockquote p:first-child {
  margin-top: 0;
}

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

.article-body a {
  color: var(--color-terracotta);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.article-body a:hover {
  color: var(--color-terracotta-dark);
  text-decoration-thickness: 2px;
}

.article-body strong {
  font-weight: var(--weight-bold);
  color: var(--color-dark);
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 1.5em auto;
  box-shadow: var(--shadow-card);
}

.article-body code {
  padding: 2px 6px;
  font-family: "SFMono-Regular", Consolas, "Courier New", monospace;
  font-size: 0.9em;
  background-color: var(--color-cream);
  border-radius: var(--radius-sm);
  color: var(--color-terracotta-dark);
}

.article-body pre {
  padding: var(--space-4);
  background-color: var(--color-dark);
  color: var(--color-cream);
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-family: "SFMono-Regular", Consolas, "Courier New", monospace;
  font-size: 14px;
  line-height: 1.6;
}

.article-body pre code {
  padding: 0;
  background: none;
  color: inherit;
}

/* Callout box inside article body */
.article-body .callout {
  margin: 2em 0;
  padding: var(--space-5) var(--space-6);
  background-color: var(--color-cream);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.article-body .callout::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-terracotta), var(--color-gold), var(--color-sage));
}

/* =======================================================================
   Share buttons
   ======================================================================= */

.share-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin: var(--space-10) 0;
  padding: var(--space-5) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.share-bar__label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  letter-spacing: 0.05em;
  color: var(--color-muted);
}

.share-bar__list {
  display: flex;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.share-bar__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-cream);
  color: var(--color-medium);
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast);
}

.share-bar__link:hover {
  transform: translateY(-2px);
  background-color: var(--color-terracotta);
  color: var(--color-white);
}

.share-bar__link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* =======================================================================
   Related articles
   ======================================================================= */

.related {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px dashed var(--color-border);
}

.related__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  margin: 0 0 var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.related__title::before {
  content: "";
  width: 6px;
  height: 24px;
  background: linear-gradient(to bottom, var(--color-terracotta), var(--color-gold));
  border-radius: var(--radius-full);
  display: inline-block;
}

.related__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 600px) {
  .related__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.related__card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--transition-default),
    box-shadow var(--transition-default);
}

.related__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.related__media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--color-cream-warm);
}

.related__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-default);
}

.related__card:hover .related__image {
  transform: scale(1.05);
}

.related__body {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.related__category {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.05em;
  color: var(--color-terracotta);
  text-transform: uppercase;
}

.related__heading {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  margin: 0;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* =======================================================================
   Site Footer
   ======================================================================= */

.site-footer {
  background-color: var(--color-cream);
  border-top: 4px solid var(--color-terracotta);
  margin-top: var(--space-16);
  padding: var(--space-12) var(--gutter);
}

.site-footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-5);
}

.site-footer__brand {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-black);
  color: var(--color-dark);
  margin: 0;
}

.site-footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-medium);
  margin: 0;
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer__nav-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-medium);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-footer__nav-link:hover {
  color: var(--color-terracotta);
}

.site-footer__cta {
  margin-top: var(--space-3);
}

.site-footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-terracotta-dark);
  margin: 0;
  padding-top: var(--space-4);
  border-top: 1px dashed var(--color-border);
  width: 100%;
  max-width: 640px;
}

/* =======================================================================
   Reveal animations (progressive enhancement)
   ======================================================================= */

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms ease, transform 600ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .article-card,
  .related__card {
    transition: none !important;
  }
}

/* =======================================================================
   親テーマ AFFINGER4 のクセを抑える（必要に応じて後続で調整）
   ======================================================================= */

/* AFFINGER4 の一部デフォルト装飾を無効化 */
#header,
#headbox-bg,
#header-top-aniplus {
  background: none !important;
  border: none !important;
}

.st-navi-bl,
#st-menubtn {
  display: none !important;
}

/* AdSense / 画像装飾が親テーマから流れ込んだ場合の保険 */
.article-body figure {
  margin: 1.5em 0;
}

.article-body figure.wp-caption {
  background-color: var(--color-cream);
  padding: var(--space-3);
  border-radius: var(--radius-md);
}

.article-body figcaption {
  font-size: var(--text-sm);
  color: var(--color-muted);
  text-align: center;
  margin-top: var(--space-2);
}

/* Smooth scrolling for keyboard users */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}