/*
Theme Name: AIZOME
Theme URI: https://example.com/aizome
Author: 閣下
Description: 2026年のAIO（AI Overviews）対策とSEOを標準搭載した、藍とインクのエディトリアルテーマ。JSON-LD構造化データ自動出力、llms.txt自動生成、目次自動生成、Core Web Vitals最適化（jQuery不使用・全JS defer）を備える。
Version: 1.0.0
Requires at least: 6.4
Tested up to: 6.8
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: aizome
Tags: blog, news, one-column, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready, block-patterns
*/

/* =========================================================
   0. Tokens
   ========================================================= */
:root {
  --ai: #16467b;            /* 藍 */
  --ai-deep: #0e3059;
  --ai-pale: #eef3f9;
  --paper: #fbfaf7;         /* 生成りの紙 */
  --ink: #1c1e21;
  --ink-soft: #4b5259;
  --ink-faint: #8a9099;
  --line: #e4e1da;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(22, 70, 123, 0.08);
  --shadow-lift: 0 8px 28px rgba(22, 70, 123, 0.14);
  --font-display: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-body: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --w-content: 720px;
  --w-wide: 1120px;
}

/* =========================================================
   1. Base
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.9;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--ai); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--ai-deep); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--ink);
}

:focus-visible { outline: 2px solid var(--ai); outline-offset: 2px; }

.screen-reader-text {
  position: absolute; width: 1px; height: 1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}
.skip-link {
  position: absolute; left: 1rem; top: -100%;
  background: var(--ai); color: #fff; padding: 0.5rem 1rem;
  border-radius: var(--radius); z-index: 100;
}
.skip-link:focus { top: 1rem; color: #fff; }

/* =========================================================
   2. Header
   ========================================================= */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251, 250, 247, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  max-width: var(--w-wide); margin: 0 auto;
  display: flex; align-items: center; gap: 2rem;
  padding: 0 1.25rem; height: 68px;
}
.site-brand { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; }
.site-brand__mark {
  width: 36px; height: 36px; flex: none;
  display: grid; place-items: center;
  background: var(--ai); color: #fff; border-radius: var(--radius);
  font-family: var(--font-display); font-size: 1.25rem; font-weight: 700;
}
.site-brand__name {
  font-family: var(--font-display); font-size: 1.3rem; font-weight: 700;
  color: var(--ink); letter-spacing: 0.06em;
}
.custom-logo { width: auto; height: 36px; }

.site-nav { margin-left: auto; }
.site-nav ul { display: flex; gap: 1.75rem; list-style: none; margin: 0; padding: 0; }
.site-nav a {
  color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; font-weight: 500;
  padding: 0.4rem 0; border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.site-nav a:hover, .site-nav .current-menu-item > a { color: var(--ai); border-bottom-color: var(--ai); }

.nav-toggle {
  display: none; margin-left: auto;
  background: none; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.5rem 0.7rem; cursor: pointer; color: var(--ink);
}
@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none; position: absolute; left: 0; right: 0; top: 68px;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: 1rem 1.25rem 1.5rem;
  }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; gap: 0.25rem; }
  .site-nav a { display: block; padding: 0.6rem 0; border-bottom: 1px solid var(--line); }
}

/* =========================================================
   3. Layout
   ========================================================= */
.site-main { max-width: var(--w-wide); margin: 0 auto; padding: 2.5rem 1.25rem 5rem; }
.content-narrow { max-width: var(--w-content); margin-left: auto; margin-right: auto; }

/* =========================================================
   4. Front hero
   ========================================================= */
.hero {
  max-width: var(--w-wide); margin: 0 auto;
  padding: 4.5rem 1.25rem 3.5rem;
}
.hero__title {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  margin: 0 0 1rem; line-height: 1.4;
}
.hero__title .accent {
  background: linear-gradient(transparent 68%, var(--ai-pale) 68%);
  padding: 0 0.1em;
}
.hero__lede { color: var(--ink-soft); max-width: 40em; margin: 0; font-size: 1.05rem; }
.hero__rule {
  width: 64px; height: 3px; background: var(--ai);
  border: none; margin: 2rem 0 0;
}

/* =========================================================
   5. Article cards
   ========================================================= */
.post-grid {
  display: grid; gap: 1.75rem;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: box-shadow 0.25s, transform 0.25s;
}
.card:hover { box-shadow: var(--shadow-lift); transform: translateY(-3px); }
.card__thumb { aspect-ratio: 16 / 9; overflow: hidden; background: var(--ai-pale); }
.card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.card__body { padding: 1.25rem 1.4rem 1.5rem; display: flex; flex-direction: column; gap: 0.6rem; flex: 1; }
.card__cat {
  align-self: flex-start;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em;
  color: var(--ai); border: 1px solid currentColor; border-radius: 3px;
  padding: 0.1rem 0.5rem; text-decoration: none;
}
.card__title { font-size: 1.08rem; margin: 0; line-height: 1.6; }
.card__title a { color: var(--ink); text-decoration: none; }
.card__title a:hover { color: var(--ai); }
.card__meta { margin-top: auto; font-size: 0.8rem; color: var(--ink-faint); display: flex; gap: 1em; }

.section-title {
  font-size: 1.4rem; margin: 0 0 1.5rem;
  display: flex; align-items: baseline; gap: 0.75rem;
}
.section-title::after { content: ""; flex: 1; height: 1px; background: var(--line); }

/* =========================================================
   6. Single article
   ========================================================= */
.entry-header { margin-bottom: 2rem; }
.entry-title { font-size: clamp(1.5rem, 3.4vw, 2.2rem); margin: 0.5rem 0 1rem; }
.entry-meta { font-size: 0.85rem; color: var(--ink-faint); display: flex; flex-wrap: wrap; gap: 1.25em; }
.entry-meta time { color: inherit; }
.entry-thumb { margin: 1.75rem 0; border-radius: var(--radius); overflow: hidden; }

.entry-content { font-size: 1.0625rem; }
.entry-content > * { margin-top: 1.6em; margin-bottom: 0; }
.entry-content { counter-reset: aizome-sec; }
.entry-content h2 {
  counter-increment: aizome-sec;
  font-size: 1.45rem; margin-top: 2.8em;
  display: flex; align-items: center; gap: 0.65em;
  padding-bottom: 0.5em; position: relative;
  border-bottom: 2px solid var(--ink);
}
.entry-content h2::before {
  content: counter(aizome-sec, cjk-ideographic);
  flex: none; display: grid; place-items: center;
  width: 1.75em; height: 1.75em; font-size: 0.72em;
  background: var(--ai); color: var(--paper);
  font-family: var(--font-display); font-weight: 600;
  border-radius: 3px;
  box-shadow: 2px 2px 0 var(--ai-pale);
}
.entry-content h2::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 100%; height: 1px; background: var(--ai);
  opacity: 0.45;
}
.entry-content h3 {
  font-size: 1.2rem; margin-top: 2.2em;
  padding-bottom: 0.4em; border-bottom: 1px dashed var(--line);
}
.entry-content h3::before {
  content: "❖"; color: var(--ai); margin-right: 0.4em; font-size: 0.85em;
}
.entry-content blockquote {
  margin: 1.6em 0; padding: 1em 1.4em;
  background: #fff; border-left: 3px solid var(--ink-faint);
  color: var(--ink-soft); font-style: normal;
}
.entry-content table { border-collapse: collapse; width: 100%; }
.entry-content th, .entry-content td { border: 1px solid var(--line); padding: 0.6em 0.9em; }
.entry-content th { background: var(--ai-pale); font-weight: 700; }
.entry-content code { background: var(--ai-pale); padding: 0.15em 0.4em; border-radius: 4px; font-size: 0.92em; }
.entry-content pre { background: #14202e; color: #e6edf5; padding: 1.2em 1.4em; border-radius: var(--radius); overflow-x: auto; }
.entry-content pre code { background: none; padding: 0; }

/* 結論ファースト（AIO要約）ボックス */
.aizome-summary {
  background: #fff; border: 1px solid var(--ai); border-radius: var(--radius);
  padding: 1.4rem 1.6rem; box-shadow: var(--shadow);
}
.aizome-summary__label {
  display: inline-block; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em;
  color: #fff; background: var(--ai); border-radius: 3px;
  padding: 0.15rem 0.7rem; margin-bottom: 0.7rem;
}
.aizome-summary ul { margin: 0; padding-left: 1.3em; }
.aizome-summary li { margin: 0.35em 0; }

/* FAQ */
.aizome-faq details {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  margin-top: 0.75em; padding: 0;
}
.aizome-faq summary {
  cursor: pointer; font-weight: 700; padding: 1em 1.3em; list-style: none;
  position: relative; padding-right: 3em;
}
.aizome-faq summary::before { content: "Q."; color: var(--ai); font-family: var(--font-display); margin-right: 0.5em; }
.aizome-faq summary::after {
  content: "+"; position: absolute; right: 1.2em; top: 50%; transform: translateY(-50%);
  color: var(--ai); font-size: 1.3em; font-weight: 400;
}
.aizome-faq details[open] summary::after { content: "−"; }
.aizome-faq details > :not(summary) { padding: 0 1.3em 1.1em; margin: 0; color: var(--ink-soft); }

/* 目次 */
.aizome-toc {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.3rem 1.6rem; margin: 2.2em 0;
}
.aizome-toc__title {
  font-family: var(--font-display); font-weight: 700; font-size: 1rem;
  letter-spacing: 0.12em; margin: 0 0 0.8rem;
  display: flex; align-items: center; gap: 0.5rem;
}
.aizome-toc__title::before { content: ""; width: 10px; height: 10px; background: var(--ai); border-radius: 2px; }
.aizome-toc ol { margin: 0; padding-left: 1.4em; counter-reset: toc; list-style: none; }
.aizome-toc > ol > li { counter-increment: toc; margin: 0.35em 0; }
.aizome-toc > ol > li::before { content: counter(toc, decimal-leading-zero); color: var(--ai); font-weight: 700; margin-right: 0.6em; font-size: 0.85em; }
.aizome-toc ol ol { padding-left: 2em; }
.aizome-toc ol ol li { font-size: 0.93em; margin: 0.25em 0; list-style: disc; color: var(--ink-soft); }
.aizome-toc a { color: var(--ink); text-decoration: none; }
.aizome-toc a:hover { color: var(--ai); text-decoration: underline; }

/* 更新日表示 */
.entry-dates { display: flex; gap: 1.25em; align-items: center; }
.entry-dates .modified { color: var(--ai); font-weight: 500; }

/* 著者ボックス（E-E-A-T） */
.author-box {
  display: flex; gap: 1.25rem; align-items: flex-start;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem 1.6rem; margin-top: 3.5rem;
}
.author-box__avatar img { border-radius: 50%; width: 64px; height: 64px; }
.author-box__label { font-size: 0.75rem; letter-spacing: 0.1em; color: var(--ink-faint); margin: 0; }
.author-box__name { font-family: var(--font-display); font-size: 1.1rem; margin: 0.15rem 0 0.5rem; }
.author-box__bio { font-size: 0.9rem; color: var(--ink-soft); margin: 0; }

/* パンくず */
.breadcrumb { font-size: 0.82rem; color: var(--ink-faint); margin-bottom: 1.5rem; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 0.4em; margin: 0; padding: 0; }
.breadcrumb li:not(:last-child)::after { content: "›"; margin-left: 0.4em; color: var(--line); }
.breadcrumb a { color: var(--ink-faint); text-decoration: none; }
.breadcrumb a:hover { color: var(--ai); }

/* シェア・タグ */
.entry-tags { margin-top: 2.5rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.entry-tags a {
  font-size: 0.8rem; color: var(--ink-soft); text-decoration: none;
  border: 1px solid var(--line); border-radius: 999px; padding: 0.2rem 0.85rem;
  transition: border-color 0.2s, color 0.2s;
}
.entry-tags a:hover { border-color: var(--ai); color: var(--ai); }

/* 前後記事ナビ */
.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 3rem; }
.post-nav a {
  display: block; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1rem 1.2rem; text-decoration: none; color: var(--ink); font-size: 0.9rem;
  transition: box-shadow 0.2s;
}
.post-nav a:hover { box-shadow: var(--shadow); }
.post-nav .nav-label { display: block; font-size: 0.72rem; color: var(--ai); margin-bottom: 0.3rem; letter-spacing: 0.08em; }
.post-nav .nav-next { text-align: right; }
@media (max-width: 640px) { .post-nav { grid-template-columns: 1fr; } }

/* =========================================================
   7. Archive / Search / 404
   ========================================================= */
.archive-header { margin-bottom: 2.25rem; }
.archive-title { font-size: 1.6rem; margin: 0 0 0.5rem; }
.archive-title .prefix { color: var(--ai); font-size: 0.8em; margin-right: 0.5em; }
.archive-description { color: var(--ink-soft); font-size: 0.95rem; }

.pagination { margin-top: 3rem; display: flex; justify-content: center; }
.pagination .nav-links { display: flex; gap: 0.5rem; }
.pagination .page-numbers {
  display: grid; place-items: center; min-width: 42px; height: 42px; padding: 0 0.6rem;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  text-decoration: none; color: var(--ink); font-size: 0.9rem;
}
.pagination .page-numbers.current { background: var(--ai); border-color: var(--ai); color: #fff; }
.pagination a.page-numbers:hover { border-color: var(--ai); color: var(--ai); }

.search-form { display: flex; gap: 0.5rem; max-width: 480px; }
.search-form input[type="search"] {
  flex: 1; padding: 0.65rem 1rem; font-size: 1rem;
  border: 1px solid var(--line); border-radius: var(--radius); background: #fff;
  font-family: inherit;
}
.search-form input[type="search"]:focus { border-color: var(--ai); outline: none; }
.search-form button {
  padding: 0.65rem 1.4rem; background: var(--ai); color: #fff; border: none;
  border-radius: var(--radius); font-family: inherit; font-size: 0.95rem; cursor: pointer;
}
.search-form button:hover { background: var(--ai-deep); }
.search-form button:active { transform: translateY(1px); }

.error-404 { text-align: center; padding: 4rem 0; }
.error-404 .code { font-family: var(--font-display); font-size: 5rem; color: var(--ai); margin: 0; line-height: 1; }

/* =========================================================
   8. Comments
   ========================================================= */
.comments-area { margin-top: 3.5rem; }
.comment-list { list-style: none; padding: 0; }
.comment-list .comment { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem 1.4rem; margin-top: 1rem; }
.comment-list .children { list-style: none; padding-left: 1.5rem; }
.comment-author { font-weight: 700; font-size: 0.95rem; }
.comment-metadata { font-size: 0.78rem; color: var(--ink-faint); }
.comment-form label { display: block; font-size: 0.88rem; font-weight: 500; margin-bottom: 0.3rem; }
.comment-form input[type="text"], .comment-form input[type="email"], .comment-form input[type="url"], .comment-form textarea {
  width: 100%; padding: 0.6rem 0.9rem; border: 1px solid var(--line); border-radius: var(--radius);
  font-family: inherit; font-size: 0.95rem; background: #fff;
}
.comment-form .form-submit input {
  background: var(--ai); color: #fff; border: none; border-radius: var(--radius);
  padding: 0.7rem 2rem; font-size: 0.95rem; cursor: pointer; font-family: inherit;
}
.comment-form .form-submit input:hover { background: var(--ai-deep); }

/* =========================================================
   9. Footer
   ========================================================= */
.site-footer {
  background: var(--ink); color: #c9cdd2;
  margin-top: 4rem;
}
.site-footer__inner {
  max-width: var(--w-wide); margin: 0 auto;
  padding: 3rem 1.25rem 2rem;
}
.site-footer__brand { font-family: var(--font-display); font-size: 1.2rem; color: #fff; letter-spacing: 0.08em; }
.site-footer__nav ul { display: flex; flex-wrap: wrap; gap: 1.5rem; list-style: none; margin: 1.25rem 0 0; padding: 0; }
.site-footer__nav a { color: #c9cdd2; text-decoration: none; font-size: 0.88rem; }
.site-footer__nav a:hover { color: #fff; }
.site-footer__copy { font-size: 0.78rem; color: #7d838b; margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid #33373c; }

/* =========================================================
   10. 本文装飾（マーカー・ブログカード・ボックス・吹き出し・ステップ・ボタン）
   ========================================================= */

/* マーカー（藍の淡色。蛍光イエローはAIZOMEの世界観に合わないため藍系で統一） */
mark.aizome-marker,
.aizome-marker {
  background: linear-gradient(transparent 55%, rgba(22, 70, 123, 0.22) 55%);
  color: inherit;
  padding: 0 0.1em;
}

/* ブログカード（URLだけの段落が自動変換される） */
.aizome-card-link {
  display: flex; align-items: stretch;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; text-decoration: none; color: var(--ink);
  margin: 1.6em 0; min-height: 110px;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.aizome-card-link:hover { box-shadow: var(--shadow-lift); border-color: var(--ai); color: var(--ink); }
.aizome-card-link__thumb {
  flex: 0 0 200px; background: var(--ai-pale);
}
.aizome-card-link__thumb img { width: 100%; height: 100%; object-fit: cover; }
.aizome-card-link__body {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column; gap: 0.3rem;
  padding: 0.9rem 1.2rem;
}
.aizome-card-link__title {
  font-family: var(--font-display); font-weight: 700; font-size: 1rem; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.aizome-card-link__excerpt {
  font-size: 0.82rem; color: var(--ink-soft); line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.aizome-card-link__domain {
  margin-top: auto; font-size: 0.75rem; color: var(--ink-faint);
  display: flex; align-items: center; gap: 0.4em;
}
.aizome-card-link__domain::before { content: ""; width: 8px; height: 8px; background: var(--ai); border-radius: 2px; }
@media (max-width: 560px) {
  .aizome-card-link { flex-direction: column; }
  .aizome-card-link__thumb { flex: none; aspect-ratio: 16 / 9; }
}

/* 装飾ボックス4種 */
.aizome-box {
  border-radius: var(--radius); padding: 1.2rem 1.4rem;
  border: 1px solid; background: #fff;
}
.aizome-box__label {
  font-family: var(--font-display); font-weight: 700; font-size: 0.9rem;
  letter-spacing: 0.1em; margin: 0 0 0.5rem !important;
  display: flex; align-items: center; gap: 0.5rem;
}
.aizome-box__label::before { content: ""; width: 10px; height: 10px; border-radius: 2px; }
.aizome-box > p:not(.aizome-box__label) { margin-top: 0.4em; }

.aizome-box--point   { border-color: var(--ai); }
.aizome-box--point   .aizome-box__label { color: var(--ai); }
.aizome-box--point   .aizome-box__label::before { background: var(--ai); }

.aizome-box--memo    { border-color: var(--line); background: var(--ai-pale); }
.aizome-box--memo    .aizome-box__label { color: var(--ink-soft); }
.aizome-box--memo    .aizome-box__label::before { background: var(--ink-faint); }

.aizome-box--caution { border-color: #b7791f; background: #fdf6ec; }
.aizome-box--caution .aizome-box__label { color: #8a5a15; }
.aizome-box--caution .aizome-box__label::before { background: #b7791f; }

.aizome-box--alert   { border-color: #b23a48; background: #fdf0f1; }
.aizome-box--alert   .aizome-box__label { color: #8f2e3a; }
.aizome-box--alert   .aizome-box__label::before { background: #b23a48; }

/* 吹き出し会話 */
.aizome-speech {
  display: flex !important; align-items: flex-start; gap: 0.9rem;
  margin-top: 1.4em;
}
.aizome-speech__icon { flex: none; margin: 0 !important; }
.aizome-speech__icon img { border-radius: 50%; border: 2px solid var(--line); width: 56px; height: 56px; object-fit: cover; }
.aizome-speech__bubble {
  position: relative; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 0.8em 1.1em; margin: 0 !important;
  max-width: calc(100% - 80px);
}
.aizome-speech__bubble::before {
  content: ""; position: absolute; top: 20px; left: -7px;
  width: 12px; height: 12px; background: #fff;
  border-left: 1px solid var(--line); border-bottom: 1px solid var(--line);
  transform: rotate(45deg);
}
.aizome-speech--right { flex-direction: row-reverse; }
.aizome-speech--right .aizome-speech__bubble { background: var(--ai-pale); border-color: var(--ai-pale); }
.aizome-speech--right .aizome-speech__bubble::before {
  left: auto; right: -7px; background: var(--ai-pale);
  border: none; border-right: 1px solid var(--ai-pale); border-top: 1px solid var(--ai-pale);
}

/* ステップ手順 */
.aizome-steps { counter-reset: step; }
.aizome-step {
  position: relative; counter-increment: step;
  padding: 0 0 1.6em 3.2em; margin-top: 0 !important;
}
.aizome-step::before {
  content: counter(step);
  position: absolute; left: 0; top: 0;
  width: 2.1em; height: 2.1em; display: grid; place-items: center;
  background: var(--ai); color: #fff; border-radius: 50%;
  font-family: var(--font-display); font-weight: 700; font-size: 0.95rem;
}
.aizome-step::after {
  content: ""; position: absolute; left: 1.05em; top: 2.4em; bottom: 0.2em;
  width: 2px; background: var(--line); transform: translateX(-1px);
}
.aizome-steps .aizome-step:last-child { padding-bottom: 0.4em; }
.aizome-steps .aizome-step:last-child::after { display: none; }
.aizome-step__title {
  font-family: var(--font-display); font-weight: 700; font-size: 1.05rem;
  margin: 0 0 0.3em !important; padding-top: 0.25em;
}
.aizome-step > p:not(.aizome-step__title) { margin-top: 0.3em; font-size: 0.97rem; color: var(--ink-soft); }

/* ボタン */
.aizome-btn .wp-block-button__link {
  background: var(--ai); color: #fff;
  border-radius: var(--radius); padding: 0.85em 2.4em;
  font-weight: 700; letter-spacing: 0.04em; text-decoration: none;
  box-shadow: 0 3px 0 var(--ai-deep);
  transition: transform 0.15s, box-shadow 0.15s, background 0.2s;
}
.aizome-btn .wp-block-button__link:hover { background: var(--ai-deep); }
.aizome-btn .wp-block-button__link:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--ai-deep); }

/* =========================================================
   11. WP core alignment
   ========================================================= */
.alignwide { margin-left: calc(50% - min(50vw, var(--w-wide) / 2) + 1.25rem); margin-right: calc(50% - min(50vw, var(--w-wide) / 2) + 1.25rem); }
.alignfull { margin-left: calc(50% - 50vw); margin-right: calc(50% - 50vw); }
.aligncenter { margin-left: auto; margin-right: auto; }
.wp-caption, figure { max-width: 100%; }
.wp-caption-text, figcaption { font-size: 0.82rem; color: var(--ink-faint); text-align: center; margin-top: 0.5em; }

/* =========================================================
   11. サイドバー・関連記事・シェア・トップへ戻る（v1.2）
   ======================================================= */

/* --- 2カラムレイアウト（ウィジェットがあるときだけ発動） --- */
.site-main.has-sidebar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 56px;
  align-items: start;
}
.site-main.has-sidebar .content-narrow { max-width: none; }
@media (max-width: 960px) {
  .site-main.has-sidebar { grid-template-columns: minmax(0, 1fr); }
}

/* --- サイドバー / ウィジェット --- */
.site-sidebar { position: sticky; top: 90px; display: grid; gap: 2.2rem; }
@media (max-width: 960px) {
  .site-sidebar { position: static; margin-top: 3rem; }
}
.widget__title {
  font-family: var(--font-display);
  font-size: 1.05rem; font-weight: 700;
  padding-bottom: 0.5em; margin-bottom: 1em;
  border-bottom: 2px solid var(--ink);
  position: relative;
}
.widget__title::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 100%; height: 1px; background: var(--ai); opacity: 0.45;
}
.widget ul { list-style: none; padding: 0; margin: 0; }
.widget ul li { padding: 0.5em 0; border-bottom: 1px dashed var(--line); }
.widget ul li a { text-decoration: none; color: var(--ink); }
.widget ul li a:hover { color: var(--ai); }

/* --- ミニ記事リスト（人気・新着ウィジェット） --- */
.mini-post-list { display: grid; gap: 0.9rem; }
.mini-post {
  display: flex; gap: 0.75rem; align-items: flex-start;
  text-decoration: none; color: var(--ink); position: relative;
}
.mini-post:hover .mini-post__title { color: var(--ai); }
.mini-post__thumb {
  flex: none; width: 72px; height: 72px; overflow: hidden;
  border-radius: var(--radius); background: var(--ai-pale);
}
.mini-post__thumb img { width: 100%; height: 100%; object-fit: cover; }
.mini-post__noimg { display: block; width: 100%; height: 100%; background: var(--ai-pale); }
.mini-post__title {
  display: block; font-size: 0.88rem; font-weight: 500; line-height: 1.5;
  transition: color 0.2s;
}
.mini-post__date { display: block; font-size: 0.75rem; color: var(--ink-faint); margin-top: 0.3em; }
.mini-post__rank {
  position: absolute; left: -4px; top: -4px; z-index: 1;
  width: 1.5em; height: 1.5em; font-size: 0.78rem;
  display: grid; place-items: center;
  background: var(--ai); color: var(--paper);
  font-family: var(--font-display); font-weight: 600;
  border-radius: 3px;
}
.mini-post-list--ranked .mini-post:nth-child(1) .mini-post__rank { background: #b3862d; }
.mini-post-list--ranked .mini-post:nth-child(2) .mini-post__rank { background: #6d7684; }
.mini-post-list--ranked .mini-post:nth-child(3) .mini-post__rank { background: #8a5a33; }

/* --- 関連記事 --- */
.related-posts { margin-top: 3.5rem; }
.related-posts__title {
  font-family: var(--font-display);
  font-size: 1.25rem; font-weight: 700;
  padding-bottom: 0.5em; margin-bottom: 1.2em;
  border-bottom: 2px solid var(--ink);
  position: relative;
}
.related-posts__title::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 100%; height: 1px; background: var(--ai); opacity: 0.45;
}
.post-grid--related { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 640px) {
  .post-grid--related { grid-template-columns: 1fr; }
}

/* --- SNSシェア --- */
.share { margin-top: 3rem; text-align: center; }
.share__label {
  font-family: var(--font-display); font-size: 0.85rem;
  letter-spacing: 0.35em; color: var(--ink-faint);
  margin-bottom: 0.9em;
}
.share__buttons { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; }
.share__btn {
  display: inline-flex; align-items: center; gap: 0.45em;
  font-size: 0.82rem; font-weight: 500;
  padding: 0.55em 1.1em; cursor: pointer;
  border: 1px solid var(--ink); border-radius: var(--radius);
  background: #fff; color: var(--ink); text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  font-family: inherit;
}
.share__btn:hover { background: var(--ai); border-color: var(--ai); color: var(--paper); }
.share__glyph { font-weight: 700; font-size: 0.9em; }

/* --- トップへ戻る --- */
.to-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 50;
  width: 46px; height: 46px; font-size: 1.1rem;
  background: var(--ai); color: var(--paper);
  border: none; border-radius: 3px; cursor: pointer;
  box-shadow: 3px 3px 0 var(--ai-pale);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--ink); }