/*
Theme Name: Seijaku
Theme URI: https://github.com/your-repo/seijaku
Author: Generated by Claude
Author URI: https://claude.ai
Description: ミニマルでエディトリアルなブログテーマ。温かみのあるベージュトーンと日本語フォントを使用。SEO・レスポンシブ・カスタム投稿タイプ（Episode）対応。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: seijaku
Tags: blog, minimal, japanese, responsive, seo, clean
*/

/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
  --bg:             #F4F1EC;
  --surface:        #EDEAE4;
  --border:         #D4CFC8;
  --text-primary:   #2E2C28;
  --text-secondary: #6B6560;
  --text-muted:     #A09890;
  --accent:         #5A5450;
  --tag-bg:         #E4E0D8;
  --white:          #FFFFFF;

  --font-serif:  'Noto Serif JP', 'Georgia', serif;
  --font-sans:   'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', sans-serif;
  --font-mono:   'DM Mono', 'Courier New', monospace;

  --max-width: 860px;
  --page-pad-x: 40px;
  --page-pad-y-top: 64px;
  --page-pad-y-bottom: 120px;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.8;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
  color: var(--accent);
}

ul, ol {
  list-style: none;
}

/* ==========================================================================
   Layout
   ========================================================================== */
.site {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1;
}

.page-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--page-pad-y-top) var(--page-pad-x) var(--page-pad-y-bottom);
}

/* ==========================================================================
   Site Header
   ========================================================================== */
.site-header {
  background: var(--bg);
  border-top: 3px solid var(--accent);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 0 var(--border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px var(--page-pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.site-branding {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-shrink: 0;
}

.header-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.site-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 3px;
  color: var(--text-primary);
  line-height: 1;
}

.site-title a {
  color: var(--text-primary);
}

.site-title a:hover {
  color: var(--accent);
}

/* Navigation */
.main-navigation {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-menu li {
  position: relative;
}

.nav-menu a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--text-secondary);
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu .current-menu-item > a,
.nav-menu .current_page_item > a {
  color: var(--text-primary);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--text-primary);
  font-size: 20px;
  line-height: 1;
}

/* ==========================================================================
   Page Header (for archive, search, etc.)
   ========================================================================== */
.page-header {
  border-top: 2px solid var(--accent);
  padding-top: 32px;
  margin-bottom: 48px;
}

.page-header-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.page-header-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 3px;
}

.page-header-desc {
  margin-top: 12px;
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 2;
}

/* ==========================================================================
   Post List (index / archive)
   ========================================================================== */
.post-list {
  display: flex;
  flex-direction: column;
}

.post-card {
  border-bottom: 1px solid var(--border);
  padding: 36px 0;
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  align-items: start;
}

.post-card:first-child {
  border-top: 1px solid var(--border);
}

.post-card-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 4px;
}

.post-card-num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-muted);
}

.post-card-date {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 1px;
  white-space: nowrap;
}

.post-card-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.post-card-cats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.post-cat-badge {
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  padding: 3px 10px;
  text-transform: uppercase;
}

.post-card-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 2px;
  line-height: 1.6;
}

.post-card-title a {
  color: var(--text-primary);
}

.post-card-title a:hover {
  color: var(--accent);
}

.post-card-excerpt {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 2;
}

.post-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.post-tag {
  background: var(--tag-bg);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  padding: 3px 10px;
}

/* ==========================================================================
   Single Post
   ========================================================================== */
.entry-header {
  border-top: 2px solid var(--accent);
  padding-top: 32px;
  margin-bottom: 48px;
}

.entry-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.entry-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 3px;
  line-height: 1.6;
  margin-bottom: 20px;
}

.entry-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.entry-meta-date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.entry-meta-cat a {
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  padding: 4px 12px;
  text-transform: uppercase;
}

.entry-meta-cat a:hover {
  opacity: 0.8;
}

.entry-meta-modified {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  margin-left: auto;
}

/* Featured Image */
.entry-thumbnail {
  margin-bottom: 48px;
  border: 1px solid var(--border);
}

.entry-thumbnail img {
  width: 100%;
  height: auto;
}

/* Post Content */
.entry-content {
  font-size: 14.5px;
  line-height: 2.2;
  color: var(--text-primary);
}

.entry-content p {
  margin-bottom: 1.8em;
}

.entry-content h1,
.entry-content h2,
.entry-content h3,
.entry-content h4,
.entry-content h5,
.entry-content h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--text-primary);
  margin-top: 2.5em;
  margin-bottom: 0.8em;
  letter-spacing: 2px;
  line-height: 1.5;
}

.entry-content h2 {
  font-size: 18px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
}

.entry-content h3 {
  font-size: 16px;
}

.entry-content h4 {
  font-size: 15px;
}

.entry-content ul,
.entry-content ol {
  padding-left: 1.5em;
  margin-bottom: 1.8em;
}

.entry-content ul {
  list-style: none;
  padding-left: 0;
}

.entry-content ul > li {
  padding-left: 1.5em;
  position: relative;
  margin-bottom: 0.5em;
}

.entry-content ul > li::before {
  content: '—';
  font-family: var(--font-mono);
  color: var(--text-muted);
  position: absolute;
  left: 0;
}

.entry-content ol {
  list-style: decimal;
}

.entry-content ol > li {
  margin-bottom: 0.5em;
}

.entry-content blockquote {
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  background: var(--surface);
  margin: 2em 0;
  font-style: italic;
  color: var(--text-secondary);
}

.entry-content blockquote p:last-child {
  margin-bottom: 0;
}

.entry-content pre {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 20px 24px;
  overflow-x: auto;
  margin-bottom: 1.8em;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  border-radius: 2px;
}

.entry-content code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 2px;
}

.entry-content pre code {
  background: none;
  border: none;
  padding: 0;
}

.entry-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.entry-content a:hover {
  color: var(--text-primary);
}

.entry-content img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
}

.entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.8em;
  font-size: 13.5px;
}

.entry-content th,
.entry-content td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

.entry-content th {
  background: var(--surface);
  font-weight: 400;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
}

.entry-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5em 0;
}

/* ==========================================================================
   Post Footer (tags, nav)
   ========================================================================== */
.entry-footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.entry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.entry-tags-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  width: 100%;
  margin-bottom: 4px;
}

.entry-tag {
  background: var(--tag-bg);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  padding: 4px 10px;
}

.entry-tag:hover {
  background: var(--border);
  color: var(--text-primary);
}

/* Post Navigation */
.post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: 32px;
}

.nav-previous,
.nav-next {
  background: var(--bg);
  padding: 20px 24px;
}

.nav-next {
  text-align: right;
}

.nav-dir {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.nav-post-title {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.nav-post-title a {
  color: var(--text-secondary);
}

.nav-post-title a:hover {
  color: var(--text-primary);
}

/* ==========================================================================
   Summary Box (for posts with excerpt summary)
   ========================================================================== */
.summary-box {
  background: var(--surface);
  border-left: 3px solid var(--accent);
  padding: 24px 28px;
  margin-bottom: 48px;
}

.summary-box p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 2;
}

/* ==========================================================================
   Episode Custom Post Type Styles
   ========================================================================== */
.ep-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.ep-badge {
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  padding: 4px 12px;
}

.ep-subtitle {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.ep-duration {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-left: auto;
}

/* ==========================================================================
   Section Components (for use in post content via Gutenberg custom blocks or shortcodes)
   ========================================================================== */

/* Section */
.wp-block-group.is-style-seijaku-section,
.seijaku-section {
  margin-bottom: 48px;
}

.seijaku-section-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.seijaku-section-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 2px;
  min-width: 32px;
}

.seijaku-section-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 2px;
}

.seijaku-section-time {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-left: auto;
}

/* Script Block */
.seijaku-script-block {
  margin-bottom: 16px;
}

.seijaku-script-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.seijaku-script-text {
  font-size: 14px;
  color: var(--text-primary);
  line-height: 2.2;
  padding: 16px 20px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 2px;
}

/* Psychology Note */
.seijaku-psych-note {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 20px 24px;
  margin-top: 16px;
}

.seijaku-psych-note-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.seijaku-psych-note p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 2;
}

/* Highlight Box */
.seijaku-highlight-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 3px solid var(--text-muted);
  padding: 18px 22px;
  margin-top: 16px;
}

.seijaku-highlight-box p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 2;
  font-style: italic;
}

/* Flow Diagram */
.seijaku-flow-diagram {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--border);
}

.seijaku-flow-step {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 10px 16px;
  font-size: 12.5px;
  color: var(--text-primary);
  font-weight: 400;
  white-space: nowrap;
}

.seijaku-flow-arrow {
  color: var(--text-muted);
  font-size: 18px;
  font-weight: 300;
}

/* Gadget Box (2-column grid) */
.seijaku-gadget-box {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 20px 24px;
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.seijaku-gadget-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
}

.seijaku-gadget-name {
  font-size: 13.5px;
  color: var(--text-primary);
  font-weight: 400;
  margin-bottom: 4px;
}

.seijaku-gadget-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Timeline */
.seijaku-timeline {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 0;
  margin-top: 16px;
}

.seijaku-timeline-time {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  padding: 10px 16px 10px 0;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.seijaku-timeline-content {
  font-size: 13.5px;
  color: var(--text-secondary);
  padding: 10px 0 10px 20px;
  border-bottom: 1px solid var(--border);
}

/* Point List */
.seijaku-point-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
}

.seijaku-point-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.seijaku-point-list li::before {
  content: '—';
  color: var(--text-muted);
  font-family: var(--font-mono);
  flex-shrink: 0;
  margin-top: 1px;
}

/* Tags */
.seijaku-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.seijaku-tag {
  background: var(--tag-bg);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  padding: 4px 10px;
}

/* ==========================================================================
   Pagination
   ========================================================================== */
.pagination,
.posts-navigation {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.page-numbers,
.nav-links a,
.nav-links span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--text-secondary);
  padding: 8px 14px;
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
}

.page-numbers:hover,
.nav-links a:hover {
  background: var(--surface);
  color: var(--text-primary);
}

.page-numbers.current,
.nav-links .current {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.page-numbers.dots {
  border-color: transparent;
  background: transparent;
}

/* ==========================================================================
   No Posts / Not Found
   ========================================================================== */
.no-results {
  text-align: center;
  padding: 64px 0;
}

.no-results-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.no-results-desc {
  font-size: 13.5px;
  color: var(--text-muted);
}

/* ==========================================================================
   Search Form
   ========================================================================== */
.search-form {
  display: flex;
  border: 1px solid var(--border);
  margin-top: 24px;
}

.search-form input[type="search"] {
  flex: 1;
  background: var(--white);
  border: none;
  padding: 12px 16px;
  font-family: var(--font-sans);
  font-size: 13.5px;
  color: var(--text-primary);
  outline: none;
}

.search-form input[type="search"]::placeholder {
  color: var(--text-muted);
}

.search-form button[type="submit"] {
  background: var(--accent);
  color: var(--bg);
  border: none;
  padding: 12px 20px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: opacity 0.2s ease;
}

.search-form button[type="submit"]:hover {
  opacity: 0.85;
}

/* ==========================================================================
   Site Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px var(--page-pad-x);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-nav {
  display: flex;
  gap: 24px;
}

.footer-nav a {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.footer-nav a:hover {
  color: var(--text-secondary);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* ==========================================================================
   Breadcrumb
   ========================================================================== */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-muted);
}

.breadcrumb a:hover {
  color: var(--text-secondary);
}

.breadcrumb-sep {
  color: var(--border);
}

/* ==========================================================================
   WordPress Core / Gutenberg Compatibility
   ========================================================================== */
.alignleft {
  float: left;
  margin-right: 1.5em;
  margin-bottom: 1em;
}

.alignright {
  float: right;
  margin-left: 1.5em;
  margin-bottom: 1em;
}

.aligncenter {
  display: block;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 1em;
}

.wp-caption {
  max-width: 100%;
}

.wp-caption-text {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 6px;
}

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

/* Gutenberg blocks */
.wp-block-image {
  margin-bottom: 1.8em;
}

.wp-block-pullquote {
  border-top: 3px solid var(--accent);
  border-bottom: 3px solid var(--accent);
  padding: 24px 0;
  margin: 2em 0;
  text-align: center;
}

.wp-block-pullquote blockquote {
  border-left: none;
  background: none;
  padding: 0;
  font-style: italic;
}

.wp-block-pullquote p {
  font-family: var(--font-serif);
  font-size: 18px;
  letter-spacing: 1px;
  color: var(--text-primary);
}

.wp-block-separator {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5em auto;
  max-width: 60px;
}

.wp-block-separator.is-style-wide {
  max-width: 100%;
}

.wp-block-quote {
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  background: var(--surface);
  margin: 2em 0;
  color: var(--text-secondary);
  font-style: italic;
}

.wp-block-code {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 20px 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  overflow-x: auto;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 860px) {
  :root {
    --page-pad-x: 28px;
    --page-pad-y-top: 48px;
    --page-pad-y-bottom: 80px;
  }

  .header-inner {
    padding: 16px var(--page-pad-x);
    flex-wrap: wrap;
    gap: 16px;
  }

  .post-card {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .post-card-meta {
    flex-direction: row;
    align-items: center;
    gap: 12px;
  }

  .seijaku-gadget-box {
    grid-template-columns: 1fr;
  }

  .entry-title {
    font-size: 22px;
  }

  .page-header-title {
    font-size: 22px;
  }
}

@media (max-width: 600px) {
  :root {
    --page-pad-x: 20px;
    --page-pad-y-top: 36px;
    --page-pad-y-bottom: 64px;
  }

  /* Mobile Nav */
  .nav-toggle {
    display: block;
  }

  .main-navigation {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    display: none;
    padding: 20px var(--page-pad-x);
  }

  .main-navigation.is-open {
    display: flex;
  }

  .nav-menu {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    width: 100%;
  }

  .site-header {
    position: relative;
  }

  .header-inner {
    position: relative;
  }

  .entry-title {
    font-size: 20px;
    letter-spacing: 2px;
  }

  .post-navigation {
    grid-template-columns: 1fr;
  }

  .nav-next {
    text-align: left;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 24px var(--page-pad-x);
  }

  .seijaku-flow-diagram {
    flex-direction: column;
    align-items: flex-start;
  }

  .seijaku-flow-step {
    white-space: normal;
  }

  .ep-duration {
    margin-left: 0;
  }

  .entry-meta-modified {
    margin-left: 0;
  }
}

@media (max-width: 400px) {
  :root {
    --page-pad-x: 16px;
  }

  .entry-title {
    font-size: 18px;
  }

  .site-title {
    font-size: 16px;
  }
}