/*
Theme Name: Vault Archive
Theme URI: https://vault.ryook.com/
Author: Vault Editorial
Author URI: https://vault.ryook.com/
Description: 古いアーカイブ図書館 × モダンな検索画面をコンセプトにした、機密解除公文書・歴史ファクトチェックメディア「Vault」専用オリジナルテーマ。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: vault-archive
*/

/* ==========================================================================
   1. Design Tokens (古いアーカイブ図書館 × モダンな検索画面)
   ========================================================================== */
:root {
  --vault-paper: #F5F2EB;
  --vault-paper-light: #FAF8F3;
  --vault-folder: #EBE5D5;
  --vault-folder-dark: #E0D8C3;
  --vault-border: #D2C8B2;
  --vault-ink: #1C1B18;
  --vault-muted: #5E5B52;
  --vault-red: #A82424;
  --vault-red-soft: rgba(168, 36, 36, 0.08);
  --vault-redaction: #0F0F0F;
  --vault-brass: #8C6D3F;
  --vault-brass-soft: rgba(140, 109, 63, 0.12);
  --vault-slate: #1F242A;
  --vault-slate-light: #2B323B;
  --vault-green: #245B43;

  --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-serif: 'Noto Serif JP', 'Yu Mincho', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'Courier Prime', Consolas, monospace;

  --radius-sm: 3px;
  --radius-md: 6px;
  --shadow-card: 0 2px 6px rgba(28, 27, 24, 0.06), 0 1px 2px rgba(28, 27, 24, 0.04);
  --shadow-elevated: 0 10px 28px rgba(28, 27, 24, 0.12);
  --container-max: 1120px;
  --reading-max: 760px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--vault-paper);
  color: var(--vault-ink);
  font-family: var(--font-sans);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(rgba(140, 109, 63, 0.045) 1px, transparent 0);
  background-size: 24px 24px;
}

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

a {
  color: var(--vault-red);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s ease, opacity 0.15s ease;
}

a:hover {
  color: var(--vault-ink);
}

.vault-container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.vault-reading-container {
  width: 100%;
  max-width: var(--reading-max);
  margin: 0 auto;
  padding: 0 20px;
}

.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   3. Header & Top Archival Ribbon
   ========================================================================== */
.vault-status-ribbon {
  background-color: var(--vault-slate);
  color: #B6B2A6;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  padding: 6px 0;
  border-bottom: 1px solid #343C46;
}

.vault-status-ribbon__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.vault-status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #48A868;
  margin-right: 6px;
  vertical-align: middle;
}

.vault-header {
  background-color: var(--vault-paper-light);
  border-bottom: 2px solid var(--vault-ink);
  position: sticky;
  top: 0;
  z-index: 50;
}

.vault-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 20px;
}

.vault-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--vault-ink);
}

.vault-brand:hover {
  color: var(--vault-ink);
  opacity: 0.85;
}

.vault-brand__seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--vault-ink);
  color: var(--vault-paper-light);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.15rem;
  border: 2px solid var(--vault-brass);
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
}

.vault-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.vault-brand__name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.vault-brand__sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--vault-muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.vault-nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--vault-ink);
  cursor: pointer;
}

.vault-nav__list {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 24px;
}

.vault-nav__list a {
  text-decoration: none;
  color: var(--vault-ink);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

.vault-nav__list a:hover,
.vault-nav__list .current-menu-item > a {
  color: var(--vault-red);
  border-bottom-color: var(--vault-red);
}

/* ==========================================================================
   4. Front Page Hero & Modern Library Search Console
   ========================================================================== */
.vault-hero {
  background-color: var(--vault-paper-light);
  border-bottom: 1px solid var(--vault-border);
  padding: 44px 0 38px;
}

.vault-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--vault-brass);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 10px;
}

.vault-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.2vw, 2.35rem);
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 12px;
  color: var(--vault-ink);
}

.vault-hero__lead {
  font-size: 0.98rem;
  color: var(--vault-muted);
  max-width: 700px;
  margin: 0 0 26px;
}

.vault-search-console {
  background-color: var(--vault-folder);
  border: 1px solid var(--vault-border);
  border-left: 4px solid var(--vault-brass);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.vault-search-form {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

.vault-search-form__input-wrap {
  position: relative;
  flex: 1;
}

.vault-search-form__prefix {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--vault-brass);
  pointer-events: none;
}

.vault-search-form__input {
  width: 100%;
  padding: 12px 14px 12px 74px;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-sm);
  color: var(--vault-ink);
  outline: none;
}

.vault-search-form__input:focus {
  border-color: var(--vault-ink);
  box-shadow: 0 0 0 2px rgba(28, 27, 24, 0.12);
}

.vault-search-form__submit {
  background-color: var(--vault-ink);
  color: var(--vault-paper-light);
  border: none;
  border-radius: var(--radius-sm);
  padding: 0 22px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.15s ease;
}

.vault-search-form__submit:hover {
  background-color: var(--vault-red);
}

.vault-filter-bar {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.vault-filter-bar__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--vault-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-right: 4px;
}

.vault-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 11px;
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--vault-ink);
  text-decoration: none;
  transition: all 0.15s ease;
}

.vault-chip:hover,
.vault-chip.is-active {
  background-color: var(--vault-ink);
  border-color: var(--vault-ink);
  color: var(--vault-paper-light);
}

.vault-chip--stamp {
  border-color: rgba(168, 36, 36, 0.35);
  color: var(--vault-red);
}

.vault-chip--stamp:hover {
  background-color: var(--vault-red);
  border-color: var(--vault-red);
  color: #FFFFFF;
}

/* ==========================================================================
   5. Case Card Grid (マニラ紙フォルダ風カード)
   ========================================================================== */
.vault-archive-section {
  padding: 42px 0 56px;
}

.vault-section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--vault-border);
  padding-bottom: 10px;
  margin-bottom: 26px;
  gap: 12px;
  flex-wrap: wrap;
}

.vault-section-head__title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0;
}

.vault-section-head__count {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--vault-muted);
}

.vault-case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.vault-case-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.vault-case-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-elevated);
}

.vault-case-card__tab {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--vault-folder);
  border-bottom: 1px solid var(--vault-border);
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--vault-muted);
}

.vault-case-card__id {
  font-weight: 700;
  color: var(--vault-brass);
  letter-spacing: 0.06em;
}

.vault-case-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background-color: var(--vault-slate);
  overflow: hidden;
  border-bottom: 1px solid var(--vault-border);
}

.vault-case-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.04) sepia(0.08);
}

.vault-case-card__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #A6A092;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(255, 255, 255, 0.02),
    rgba(255, 255, 255, 0.02) 10px,
    transparent 10px,
    transparent 20px
  );
}

.vault-case-card__stamp-wrap {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
}

.vault-case-card__body {
  padding: 16px 18px 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.vault-case-card__agency {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--vault-muted);
  margin-bottom: 6px;
}

.vault-case-card__title {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.48;
  margin: 0 0 10px;
}

.vault-case-card__title a {
  color: var(--vault-ink);
  text-decoration: none;
}

.vault-case-card__title a:hover {
  color: var(--vault-red);
}

.vault-case-card__excerpt {
  font-size: 0.86rem;
  color: var(--vault-muted);
  line-height: 1.65;
  margin: 0 0 14px;
  flex: 1;
}

.vault-case-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 18px;
  background-color: var(--vault-paper);
  border-top: 1px dashed var(--vault-border);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.vault-case-card__link {
  text-decoration: none;
  font-weight: 700;
  color: var(--vault-ink);
  letter-spacing: 0.04em;
}

.vault-case-card__link:hover {
  color: var(--vault-red);
}

/* ==========================================================================
   6. Verdict Rubber Stamps (判定スタンプ)
   ========================================================================== */
.vault-stamp {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border: 2px solid var(--vault-red);
  color: var(--vault-red);
  background-color: rgba(250, 248, 243, 0.92);
  border-radius: 2px;
  text-transform: uppercase;
  transform: rotate(-3deg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.vault-stamp--lg {
  font-size: 0.85rem;
  padding: 5px 12px;
  border-width: 2.5px;
}

.vault-stamp--surreal {
  border-color: var(--vault-brass);
  color: var(--vault-brass);
}

.vault-stamp--decoy {
  border-color: #2B4C7E;
  color: #2B4C7E;
}

.vault-stamp--redacted {
  border-color: var(--vault-redaction);
  color: var(--vault-paper-light);
  background-color: var(--vault-redaction);
}

.vault-stamp--norecord {
  border-color: var(--vault-muted);
  color: var(--vault-muted);
}

/* ==========================================================================
   7. Single Case Article (7ブロック構成対応レイアウト)
   ========================================================================== */
.vault-dossier-header {
  background-color: var(--vault-paper-light);
  border-bottom: 1px solid var(--vault-border);
  padding: 34px 0 32px;
}

.vault-breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--vault-muted);
  margin-bottom: 16px;
}

.vault-breadcrumb a {
  color: var(--vault-muted);
  text-decoration: none;
}

.vault-breadcrumb a:hover {
  color: var(--vault-red);
}

.vault-dossier-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
}

.vault-dossier-id {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--vault-brass);
  background-color: var(--vault-brass-soft);
  padding: 4px 10px;
  border: 1px solid rgba(140, 109, 63, 0.35);
  border-radius: var(--radius-sm);
}

.vault-article-title {
  font-family: var(--font-serif);
  font-size: clamp(1.55rem, 3.2vw, 2.2rem);
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 20px;
}

.vault-dossier-specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1px;
  background-color: var(--vault-border);
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 24px;
}

.vault-dossier-specs__item {
  background-color: var(--vault-folder);
  padding: 10px 14px;
}

.vault-dossier-specs__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--vault-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.vault-dossier-specs__value {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--vault-ink);
  word-break: break-word;
}

.vault-eyecatch-plate {
  background-color: var(--vault-folder);
  padding: 10px;
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
}

.vault-eyecatch-plate img {
  width: 100%;
  max-height: 460px;
  object-fit: cover;
}

/* Article Body Typography */
.vault-article-main {
  padding: 38px 0 56px;
}

.vault-article-body {
  font-size: 1.02rem;
  line-height: 1.92;
}

.vault-article-body > * + * {
  margin-top: 1.35em;
}

.vault-article-body h2 {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1.45;
  margin-top: 2.4em;
  margin-bottom: 0.8em;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--vault-ink);
}

.vault-article-body h3 {
  font-family: var(--font-serif);
  font-size: 1.18rem;
  font-weight: 700;
  margin-top: 1.8em;
  margin-bottom: 0.6em;
  color: var(--vault-ink);
  padding-left: 12px;
  border-left: 3px solid var(--vault-red);
}

.vault-article-body blockquote {
  margin: 1.6em 0;
  padding: 16px 20px;
  background-color: var(--vault-paper-light);
  border-left: 4px solid var(--vault-brass);
  border-top: 1px solid var(--vault-border);
  border-right: 1px solid var(--vault-border);
  border-bottom: 1px solid var(--vault-border);
  font-size: 0.96rem;
}

.vault-article-body table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  font-size: 0.92rem;
}

.vault-article-body th,
.vault-article-body td {
  padding: 12px 14px;
  border: 1px solid var(--vault-border);
  text-align: left;
  vertical-align: top;
}

.vault-article-body th {
  background-color: var(--vault-folder);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.vault-article-body img {
  cursor: zoom-in;
  border: 1px solid var(--vault-border);
}

/* ==========================================================================
   8. Vault Signature Components (記事内パーツ・ブロックパターン)
   ========================================================================== */

/* ① アーキビストの付箋メモ枠 */
.vault-archivist-note {
  position: relative;
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  border-left: 5px solid var(--vault-slate);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  margin: 2em 0;
  box-shadow: var(--shadow-card);
}

.vault-archivist-note__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--vault-paper-light);
  background-color: var(--vault-slate);
  padding: 2px 8px;
  border-radius: 2px;
  margin-bottom: 10px;
}

.vault-archivist-note p:last-child {
  margin-bottom: 0;
}

/* ② 噂 vs 公文書 比較ボックス */
.vault-comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 1.8em 0;
}

.vault-comparison-col {
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-sm);
  padding: 18px;
}

.vault-comparison-col--myth {
  border-top: 4px solid var(--vault-muted);
}

.vault-comparison-col--record {
  border-top: 4px solid var(--vault-red);
  background-color: #FCFBF7;
}

.vault-comparison-col__head {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 10px;
  color: var(--vault-muted);
}

.vault-comparison-col--record .vault-comparison-col__head {
  color: var(--vault-red);
}

/* ③ 一次資料スペック＆スキャンカード */
.vault-evidence-card {
  background-color: var(--vault-folder);
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-md);
  padding: 20px;
  margin: 2em 0;
}

.vault-evidence-card__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--vault-brass);
  border-bottom: 1px solid var(--vault-border);
  padding-bottom: 8px;
  margin-bottom: 14px;
}

/* ④ 原文引用＋直訳ボックス */
.vault-quote-pair {
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin: 1.8em 0;
}

.vault-quote-pair__orig {
  padding: 16px 20px;
  background-color: #EFECE3;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.75;
  border-bottom: 1px dashed var(--vault-border);
}

.vault-quote-pair__trans {
  padding: 16px 20px;
  font-size: 0.96rem;
}

.vault-quote-pair__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--vault-brass);
  margin-bottom: 6px;
}

/* ⑤ 黒塗り（Redacted）表現パーツ */
.vault-redacted-reveal {
  display: inline;
  background-color: var(--vault-redaction);
  color: transparent;
  padding: 2px 6px;
  border-radius: 2px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.25s ease, color 0.25s ease;
  border-bottom: 2px dotted var(--vault-brass);
}

.vault-redacted-reveal:hover,
.vault-redacted-reveal.is-revealed {
  background-color: rgba(140, 109, 63, 0.16);
  color: var(--vault-ink);
  user-select: text;
}

.vault-redacted-locked {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background-color: var(--vault-redaction);
  color: #B6B2A6;
  font-family: var(--font-mono);
  font-size: 0.8em;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: 2px;
  cursor: not-allowed;
  user-select: none;
}

.vault-redacted-hint {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--vault-muted);
  margin-top: 6px;
}

/* Source Verification Footer Box */
.vault-source-box {
  margin-top: 44px;
  padding: 22px;
  background-color: var(--vault-folder);
  border: 1px solid var(--vault-border);
  border-left: 4px solid var(--vault-green);
  border-radius: var(--radius-sm);
}

.vault-source-box__title {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--vault-green);
  letter-spacing: 0.08em;
  margin: 0 0 10px;
}

.vault-source-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.vault-source-btn {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  background-color: var(--vault-ink);
  color: var(--vault-paper-light);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.vault-source-btn:hover {
  background-color: var(--vault-red);
  color: #FFFFFF;
}

.vault-source-btn--mirror {
  background-color: transparent;
  color: var(--vault-green);
  border: 1px solid var(--vault-green);
}

.vault-source-btn--mirror:hover {
  background-color: var(--vault-green);
  color: #FFFFFF;
}

.vault-post-tags {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.vault-post-nav {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--vault-border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.vault-post-nav a {
  display: block;
  padding: 14px;
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--vault-ink);
  font-size: 0.88rem;
}

.vault-post-nav a:hover {
  border-color: var(--vault-ink);
}

.vault-post-nav__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--vault-muted);
  margin-bottom: 4px;
}

/* ==========================================================================
   9. Editorial Pledge Band & Pagination & Footer
   ========================================================================== */
.vault-pledge-band {
  background-color: var(--vault-folder);
  border-top: 1px solid var(--vault-border);
  border-bottom: 1px solid var(--vault-border);
  padding: 36px 0;
}

.vault-pledge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.vault-pledge-item {
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  padding: 16px 18px;
  border-radius: var(--radius-sm);
}

.vault-pledge-item__tier {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--vault-red);
  margin-bottom: 4px;
}

.vault-pledge-item__title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 6px;
}

.vault-pledge-item__desc {
  font-size: 0.84rem;
  color: var(--vault-muted);
  margin: 0;
}

.vault-pagination {
  margin-top: 38px;
  display: flex;
  justify-content: center;
}

.vault-pagination .nav-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.vault-pagination .page-numbers {
  display: inline-block;
  padding: 6px 13px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  color: var(--vault-ink);
  text-decoration: none;
  border-radius: var(--radius-sm);
}

.vault-pagination .page-numbers.current,
.vault-pagination .page-numbers:hover {
  background-color: var(--vault-ink);
  border-color: var(--vault-ink);
  color: var(--vault-paper-light);
}

.vault-footer {
  background-color: var(--vault-slate);
  color: #D4D0C5;
  padding: 40px 0 28px;
  font-size: 0.86rem;
}

.vault-footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid #343C46;
}

.vault-footer__brand {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: #FAF8F3;
  margin: 0 0 6px;
}

.vault-footer__copy {
  color: #9A9589;
  margin: 0;
  max-width: 440px;
}

.vault-footer__nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.vault-footer__nav a {
  color: #D4D0C5;
  text-decoration: none;
}

.vault-footer__nav a:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

.vault-footer__bottom {
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: #8E897E;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ==========================================================================
   10. Lightbox & Toast Feedback
   ========================================================================== */
.vault-lightbox {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 15, 15, 0.9);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 9999;
}

.vault-lightbox.is-open {
  display: flex;
}

.vault-lightbox__img {
  max-width: 94vw;
  max-height: 88vh;
  border: 2px solid var(--vault-paper);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5);
}

.vault-lightbox__close {
  position: absolute;
  top: 18px;
  right: 22px;
  background-color: var(--vault-paper-light);
  color: var(--vault-ink);
  border: none;
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
}

.vault-toast {
  position: fixed;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background-color: var(--vault-redaction);
  color: var(--vault-paper-light);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 10px 18px;
  border-left: 3px solid var(--vault-red);
  border-radius: var(--radius-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 9998;
}

.vault-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   11. Responsive Rules (スマホ最適化)
   ========================================================================== */
@media (max-width: 960px) {
  .vault-case-grid,
  .vault-pledge-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .vault-nav__toggle {
    display: inline-block;
  }

  .vault-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--vault-paper-light);
    border-bottom: 2px solid var(--vault-ink);
    padding: 14px 20px;
  }

  .vault-nav.is-open {
    display: block;
  }

  .vault-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .vault-search-form {
    flex-direction: column;
  }

  .vault-search-form__submit {
    padding: 12px;
  }

  .vault-case-grid,
  .vault-pledge-grid,
  .vault-comparison-grid,
  .vault-post-nav {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   12. Single 2-Column Layout, Sticky Archive Sidebar & SNS Share Bar
   ========================================================================== */
.vault-single-wrap {
  padding: 30px 0 56px;
}

.vault-single-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 36px;
  align-items: start;
}

.vault-single-main {
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.vault-dossier-header--compact {
  padding: 28px 32px 24px;
  border-bottom: 1px solid var(--vault-border);
  background-color: var(--vault-paper-light);
}

.vault-article-main--compact {
  padding: 28px 32px 36px;
}

/* SNS Share Bar */
.vault-share-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 14px;
  background-color: var(--vault-paper);
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-sm);
}

.vault-share-bar--top {
  margin-top: 18px;
}

.vault-share-bar--bottom {
  margin-top: 30px;
}

.vault-share-bar__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--vault-brass);
  letter-spacing: 0.08em;
  margin-right: 4px;
}

.vault-share-bar__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.vault-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-sm);
  color: var(--vault-ink);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
}

.vault-share-btn:hover {
  transform: translateY(-1px);
  color: #FFFFFF;
}

.vault-share-btn--x:hover {
  background-color: #111111;
  border-color: #111111;
}

.vault-share-btn--line:hover {
  background-color: #06C755;
  border-color: #06C755;
}

.vault-share-btn--fb:hover {
  background-color: #1877F2;
  border-color: #1877F2;
}

.vault-share-btn--hatena:hover {
  background-color: #00A4DE;
  border-color: #00A4DE;
}

.vault-share-btn--copy:hover {
  background-color: var(--vault-brass);
  border-color: var(--vault-brass);
}

.vault-share-btn__hatena-mark {
  font-weight: 700;
  font-size: 0.82rem;
}

/* Sticky Right Sidebar */
.vault-sidebar {
  position: sticky;
  top: 88px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.vault-widget {
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  border-top: 3px solid var(--vault-slate);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  box-shadow: var(--shadow-card);
}

.vault-widget__title {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--vault-brass);
  border-bottom: 1px solid var(--vault-border);
  padding-bottom: 8px;
  margin: 0 0 12px;
}

.vault-widget__empty {
  font-size: 0.84rem;
  color: var(--vault-muted);
  margin: 0;
}

.vault-sidebar-search {
  display: flex;
  gap: 6px;
}

.vault-sidebar-search__input {
  flex: 1;
  min-width: 0;
  padding: 8px 10px;
  font-size: 0.86rem;
  font-family: var(--font-sans);
  background-color: var(--vault-paper);
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-sm);
  color: var(--vault-ink);
}

.vault-sidebar-search__btn {
  padding: 8px 12px;
  background-color: var(--vault-ink);
  color: var(--vault-paper-light);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
}

.vault-sidebar-search__btn:hover {
  background-color: var(--vault-red);
}

.vault-popular-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.vault-popular-item {
  border-bottom: 1px dashed var(--vault-border);
  padding-bottom: 10px;
}

.vault-popular-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.vault-popular-item__link {
  display: block;
  text-decoration: none;
  color: var(--vault-ink);
}

.vault-popular-item__link:hover .vault-popular-item__title {
  color: var(--vault-red);
}

.vault-popular-item__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  margin-bottom: 4px;
}

.vault-popular-item__id {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--vault-brass);
}

.vault-popular-item__title {
  display: block;
  font-family: var(--font-serif);
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.45;
  transition: color 0.15s ease;
}

.vault-cat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.vault-cat-list__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 8px;
  background-color: var(--vault-paper);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--vault-ink);
  font-size: 0.86rem;
}

.vault-cat-list__link:hover {
  border-color: var(--vault-border);
  color: var(--vault-red);
}

.vault-cat-list__count {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--vault-muted);
}

.vault-widget__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

@media (max-width: 960px) {
  .vault-single-layout {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .vault-sidebar {
    position: static;
  }
}

@media (max-width: 680px) {
  .vault-dossier-header--compact,
  .vault-article-main--compact {
    padding: 20px 18px;
  }
}

/* ==========================================================================
   13. Contact Form 7 Archival Styling (お問い合わせフォーム装飾)
   ========================================================================== */
.wpcf7 {
  background-color: var(--vault-folder);
  border: 1px solid var(--vault-border);
  border-left: 4px solid var(--vault-brass);
  border-radius: var(--radius-md);
  padding: 26px 28px;
  margin: 1.8em 0;
  box-shadow: var(--shadow-card);
}

.wpcf7 form p {
  margin: 0 0 18px;
}

.wpcf7 label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--vault-ink);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.wpcf7-form-control-wrap {
  display: block;
  margin-top: 6px;
}

.wpcf7 input[type="text"],
.wpcf7 input[type="email"],
.wpcf7 input[type="url"],
.wpcf7 input[type="tel"],
.wpcf7 select,
.wpcf7 textarea {
  width: 100%;
  padding: 11px 14px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--vault-ink);
  background-color: var(--vault-paper-light);
  border: 1px solid var(--vault-border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.wpcf7 input[type="text"]:focus,
.wpcf7 input[type="email"]:focus,
.wpcf7 select:focus,
.wpcf7 textarea:focus {
  border-color: var(--vault-ink);
  box-shadow: 0 0 0 2px rgba(28, 27, 24, 0.12);
}

.wpcf7 textarea {
  min-height: 150px;
  resize: vertical;
}

.wpcf7 input[type="submit"],
.wpcf7 .wpcf7-submit {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--vault-ink);
  color: var(--vault-paper-light);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.wpcf7 input[type="submit"]:hover,
.wpcf7 .wpcf7-submit:hover {
  background-color: var(--vault-red);
}

.wpcf7 form .wpcf7-response-output {
  margin: 18px 0 0;
  padding: 12px 16px;
  background-color: var(--vault-paper-light);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}