/*
Theme Name: RingSpec Theme
Theme URI: https://ringspec.jp
Author: RingSpec
Author URI: https://ringspec.jp
Description: ブライダルジュエリー比較メディア「RingSpec（リングスペック）」公式テーマ。男性目線の客観的な指輪選びガイドとスペック比較を提供。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.6
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: ringspec-theme
Tags: blog, two-columns, custom-menu, featured-images, translation-ready
*/

/* ============================================================
   1. トークン
   ============================================================ */
:root {
  --nb-bg: #f8fafc;
  --nb-surface: #ffffff;
  --nb-surface-alt: #f1f5f9;
  --nb-ink: #0f172a;
  --nb-ink-soft: #334155;
  --nb-muted: #64748b;
  --nb-line: #e2e8f0;
  --nb-line-strong: #0f172a;
  --nb-accent: #1e40af;
  --nb-accent-soft: rgba(30, 64, 175, 0.08);
  --nb-cool: #0369a1;

  --nb-font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Yu Gothic', sans-serif;
  --nb-font-serif: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', serif;

  --nb-shell: 1180px;
  --nb-side: 292px;
  --nb-gap: 48px;
  --nb-radius: 4px;
  --nb-header-h: 62px;
}

/* ============================================================
   2. ベース
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

body.nb {
  margin: 0;
  background: var(--nb-bg);
  color: var(--nb-ink);
  font-family: var(--nb-font-sans);
  font-size: 15px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.nb img { max-width: 100%; height: auto; display: block; }
/* 継承色はあえて低い詳細度で当て、ボタン・チップ側の指定が確実に勝つようにする */
a { color: inherit; text-decoration: none; transition: color .18s ease; }
a:hover { color: var(--nb-accent); }
.nb h1, .nb h2, .nb h3, .nb h4 { font-family: var(--nb-font-serif); font-weight: 600; line-height: 1.55; margin: 0; }
.nb p { margin: 0; }
.nb ul, .nb ol { margin: 0; padding: 0; list-style: none; }
.nb-entry p { margin: 0 0 1.7em; }
.nb-entry p:last-child { margin-bottom: 0; }
.nb button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
.nb :focus-visible { outline: 2px solid var(--nb-accent); outline-offset: 2px; }

.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;
}

.nb-skip {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--nb-ink); color: #fff; padding: 10px 16px;
}
.nb-skip:focus { left: 8px; top: 8px; color: #fff; }

.nb-main { display: block; }

.nb-meta {
  font-size: 12px;
  color: var(--nb-muted);
  letter-spacing: .02em;
  font-family: var(--nb-font-sans);
  display: inline-block;
}
.nb-meta__sep { opacity: .5; margin: 0 1px; }

.nb-empty {
  padding: 32px 0;
  color: var(--nb-ink-soft);
  border-top: 1px solid var(--nb-line);
  border-bottom: 1px solid var(--nb-line);
  margin-bottom: 24px;
}

/* ============================================================
   3. ボタン・チップ・検索
   ============================================================ */
.nb-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px; padding: 9px 18px;
  font-size: 13px; font-weight: 500; letter-spacing: .04em;
  border: 1px solid var(--nb-line-strong); border-radius: var(--nb-radius);
  white-space: nowrap; transition: background .18s ease, color .18s ease, border-color .18s ease;
}
.nb-btn--solid { background: var(--nb-ink); color: #fff; }
.nb-btn--solid:hover { background: var(--nb-accent); border-color: var(--nb-accent); color: #fff; }
.nb-btn--ghost { background: transparent; color: var(--nb-ink); }
.nb-btn--ghost:hover { background: var(--nb-ink); color: #fff; }
.nb-btn--light { background: #fff; color: var(--nb-ink); border-color: #fff; }
.nb-btn--light:hover { background: var(--nb-accent); border-color: var(--nb-accent); color: #fff; }
.nb-btn--outline-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .7); }
.nb-btn--outline-light:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.nb-btn--quiet { background: transparent; color: #b9b5ae; border-color: #6c6862; }
.nb-btn--quiet:hover { color: #fff; border-color: #fff; }
.nb-btn--full { display: flex; width: 100%; }
.nb-btn--full + .nb-btn--full { margin-top: 8px; }
.nb-btn--sm { padding: 6px 14px; font-size: 12px; }

.nb-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px; font-size: 12.5px; line-height: 1.5;
  border: 1px solid var(--nb-line-strong); border-radius: 999px;
  background: transparent; white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nb-chip:hover { background: var(--nb-ink); color: #fff; }
.nb-chip__count { font-size: 11px; color: var(--nb-muted); }
.nb-chip:hover .nb-chip__count { color: rgba(255, 255, 255, .7); }
.nb-chip--block {
  display: flex; justify-content: space-between; width: 100%;
  border-radius: var(--nb-radius); border-color: var(--nb-line);
}

.nb-chiprow { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: thin; }
.nb-chiprow--wrap { flex-wrap: wrap; overflow: visible; }

.nb-search { display: flex; align-items: center; gap: 0; width: 100%; }
.nb-search__input {
  flex: 1 1 auto; min-width: 0;
  padding: 8px 12px; font: inherit; font-size: 13px;
  color: var(--nb-ink); background: var(--nb-surface);
  border: 1px solid var(--nb-line-strong); border-right: none; border-radius: var(--nb-radius) 0 0 var(--nb-radius);
}
.nb-search__input::placeholder { color: var(--nb-muted); }
/* 詳細度を .nb-search で上げ、上の `.nb button` リセット(0,1,1)に勝たせる */
.nb-search .nb-search__submit {
  display: flex; align-items: center; justify-content: center;
  width: 38px; align-self: stretch;
  background: var(--nb-ink); border: 1px solid var(--nb-ink); /* 非アクティブ=黒 */
  border-radius: 0 var(--nb-radius) var(--nb-radius) 0;
}
.nb-search .nb-search__submit svg { width: 17px; height: 17px; fill: none; stroke: #fff; stroke-width: 2.1; stroke-linecap: round; }
.nb-search .nb-search__submit:hover { background: var(--nb-accent); border-color: var(--nb-accent); } /* アクティブ=オレンジ */

/* ============================================================
   4. ヘッダー
   ============================================================ */
.nb-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(248, 250, 252, .96);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--nb-line-strong);
}
.nb-header__inner {
  max-width: var(--nb-shell); margin: 0 auto;
  display: flex; align-items: center; gap: 20px;
  padding: 0 24px; height: var(--nb-header-h);
}
.nb-logo__kanji { font-family: var(--nb-font-sans); font-size: 20px; font-weight: 800; letter-spacing: .02em; color: var(--nb-ink); }
.nb-logo:hover .nb-logo__kanji { color: var(--nb-accent); }
.nb-nav { flex: 1 1 auto; }
.nb-nav__list { display: flex; gap: 20px; }
.nb-nav__link { font-size: 13.5px; font-weight: 500; color: var(--nb-ink-soft); }
.nb-nav__link:hover { color: var(--nb-accent); }
.nb-header__remain { font-size: 12px; color: var(--nb-muted); white-space: nowrap; }
.nb-header__search { flex: 0 1 200px; min-width: 0; }
.nb-header__cta { flex: none; }

.nb-menu-toggle { display: none; width: 34px; height: 34px; flex-direction: column; justify-content: center; gap: 5px; }
.nb-menu-toggle span { display: block; height: 1.5px; background: var(--nb-ink); transition: transform .2s ease, opacity .2s ease; }
.nb-menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nb-menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nb-menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nb-progress { height: 3px; background: var(--nb-line); }
.nb-progress__bar { display: block; height: 3px; width: 0; background: var(--nb-accent); transition: width .08s linear; }

/* ============================================================
   5. レイアウト
   ============================================================ */
.nb-shell {
  max-width: var(--nb-shell); margin: 0 auto; padding: 0 24px 8px;
  display: grid; grid-template-columns: minmax(0, 1fr) var(--nb-side); gap: var(--nb-gap);
  align-items: start;
}
.nb-shell__main { min-width: 0; }

.nb-section { padding: 40px 0 8px; }
.nb-section__head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.nb-section__title {
  font-size: 21px; letter-spacing: .04em; font-weight: 700;
  padding-bottom: 10px; position: relative;
}
.nb-section__title::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 34px; height: 2px; background: var(--nb-accent);
}
.nb-section__title--small { font-size: 16px; letter-spacing: .06em; margin-bottom: 16px; padding-bottom: 8px; }
.nb-section__title--small::after { width: 24px; }
.nb-section__more { font-size: 12.5px; color: var(--nb-muted); }

/* ============================================================
   6. ヒーロー（帯）
   ============================================================ */
.nb-hero {
  border-bottom: 1px solid var(--nb-line-strong);
  background:
    repeating-linear-gradient(to bottom, transparent 0 31px, rgba(35, 33, 30, .045) 31px 32px),
    var(--nb-surface-alt);
}
.nb-hero__inner {
  max-width: var(--nb-shell); margin: 0 auto; padding: 52px 24px 46px;
  display: flex; align-items: flex-end; gap: 40px;
}
.nb-hero__lead { flex: 1 1 auto; position: relative; padding-left: 22px; }
.nb-hero__lead::before {
  content: ''; position: absolute; left: 0; top: 6px; bottom: 6px;
  width: 3px; background: var(--nb-accent);
}
.nb-hero__title { font-size: 31px; line-height: 1.72; letter-spacing: .01em; margin-bottom: 18px; font-weight: 700; }
.nb-hero__role { color: var(--nb-muted); }
.nb-hero__author { display: flex; align-items: center; gap: 10px; font-size: 12.5px; color: var(--nb-ink-soft); }
.nb-hero__avatar img, .nb-hero__avatar-img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
.nb-hero__side { flex: none; display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.nb-hero__count { font-size: 12.5px; color: var(--nb-muted); }
.nb-hero__count strong { font-family: var(--nb-font-serif); font-size: 22px; color: var(--nb-ink); margin: 0 2px; }

/* SP 用の検索＋カテゴリ帯（PC では隠す） */
.nb-spstrip { display: none; }

/* ============================================================
   7. カード・行
   ============================================================ */
.nb-thumb { display: block; overflow: hidden; background: var(--nb-surface-alt); border: 1px solid var(--nb-line); }
.nb-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.nb-thumb__img--placeholder { object-fit: cover; opacity: .8; }

.nb-card {
  border: 1px solid var(--nb-line); background: var(--nb-surface);
  box-shadow: 0 1px 0 rgba(35, 33, 30, .04);
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.nb-card:hover { border-color: var(--nb-line-strong); box-shadow: 0 6px 20px rgba(35, 33, 30, .09); }
.nb-card__link { display: block; }
.nb-thumb--card { aspect-ratio: 16 / 8; border: none; border-bottom: 1px solid var(--nb-line); }
.nb-card:hover .nb-thumb img { transform: scale(1.03); }
.nb-card__body { display: block; padding: 20px 24px 26px; }
.nb-card__title { font-size: 23px; line-height: 1.6; margin: 10px 0 12px; font-weight: 700; }
.nb-card__excerpt { display: block; font-size: 13.5px; color: var(--nb-ink-soft); line-height: 1.9; }

.nb-rows { margin-top: 6px; }
.nb-rows--tight .nb-row { padding: 9px 0; }
.nb-row { border-bottom: 1px solid var(--nb-line); padding: 14px 0; }
.nb-row:last-child { border-bottom: none; }
.nb-row__link { display: flex; gap: 14px; align-items: flex-start; }
.nb-row__body { flex: 1 1 auto; min-width: 0; display: block; }
.nb-row__title { display: block; font-family: var(--nb-font-serif); font-size: 16px; font-weight: 600; line-height: 1.65; margin-top: 5px; }
.nb-row:hover .nb-row__title { color: var(--nb-accent); }
.nb-thumb--row { flex: none; width: 116px; aspect-ratio: 3 / 2; }
.nb-thumb--mini { flex: none; width: 68px; aspect-ratio: 3 / 2; }
.nb-row--mini .nb-row__title { font-size: 13.5px; }

.nb-list .nb-card { margin-bottom: 8px; }

/* ============================================================
   8. サイドバー
   ============================================================ */
.nb-side { position: sticky; top: calc(var(--nb-header-h) + 20px); display: flex; flex-direction: column; gap: 16px; padding-top: 36px; }
.nb-side__block { border: 1px solid var(--nb-line); background: var(--nb-surface); padding: 16px; }
.nb-side__block--search { border: none; background: none; padding: 0; display: none; } /* 既定はヘッダー検索に任せる（幅≤1120pxで表示） */
.nb-side__title {
  font-family: var(--nb-font-sans); font-size: 11px; font-weight: 700;
  letter-spacing: .16em; color: var(--nb-muted); margin-bottom: 12px; text-transform: uppercase;
}
.nb-side__title--light { color: rgba(255, 255, 255, .7); }
.nb-side__cats { display: flex; flex-direction: column; gap: 7px; }
.nb-side__series { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; }
.nb-side__series .nb-row { border-bottom: none; padding: 6px 0; }
.nb-side__list li { padding: 8px 0; border-bottom: 1px dashed var(--nb-line); font-size: 13px; line-height: 1.7; }
.nb-side__list li:last-child { border-bottom: none; }
.nb-side__list .nb-meta { display: block; margin-top: 2px; }
.nb-side__episodes { counter-reset: nb-ep; display: flex; flex-direction: column; gap: 8px; font-size: 13px; line-height: 1.7; }
.nb-side__episodes .is-current { color: var(--nb-accent); font-weight: 700; }
.nb-side__block--dark { background: var(--nb-ink); border-color: var(--nb-ink); color: #fff; }
.nb-side__block--author { padding: 12px 14px; }
.nb-author-mini { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.nb-author-mini strong { display: block; font-weight: 600; }
.nb-author-mini__avatar img, .nb-author-mini__img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; }

/* ============================================================
   9. 帯セクション（よく読まれている／言葉／この手帖について／購読）
   ============================================================ */
.nb-band { border-top: 1px solid var(--nb-line); margin-top: 40px; background: var(--nb-surface); }
.nb-band__inner { max-width: var(--nb-shell); margin: 0 auto; padding: 44px 24px; }
.nb-band--plain { background: var(--nb-surface-alt); }
.nb-band--plain .nb-chip { padding: 7px 15px; font-size: 13px; }
.nb-band--about { background: #eef1f1; }
.nb-band--dark { background: var(--nb-ink); color: #fff; border-top-color: var(--nb-ink); margin-top: 0; }

.nb-twocol { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; }
.nb-twocol__col { min-width: 0; }

.nb-ranking { display: flex; flex-direction: column; }
.nb-ranking__item {
  display: flex; align-items: baseline; gap: 14px;
  padding: 13px 0; border-bottom: 1px solid var(--nb-line);
}
.nb-ranking__item:first-child .nb-ranking__num { font-size: 24px; }
.nb-ranking__item:last-child { border-bottom: none; }
.nb-ranking__num {
  font-family: var(--nb-font-serif); font-size: 19px; font-weight: 700;
  color: var(--nb-accent); width: 22px; flex: none; line-height: 1.2;
}
.nb-ranking__title { flex: 1 1 auto; font-family: var(--nb-font-serif); font-size: 15px; line-height: 1.7; }
.nb-ranking__time { flex: none; }

.nb-tabs { display: none; }

.nb-about { display: flex; align-items: center; gap: 28px; }
.nb-about__title { font-size: 19px; margin-bottom: 12px; }
.nb-about__body { font-size: 13.5px; color: var(--nb-ink-soft); line-height: 1.95; }

.nb-cta { text-align: left; }
.nb-cta__title { font-size: 18px; color: #fff; margin-bottom: 16px; }
.nb-cta__actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* ============================================================
   10. 一覧・棚・パンくず
   ============================================================ */
.nb-pagehead { border-bottom: 1px solid var(--nb-line); background: var(--nb-surface-alt); }
.nb-pagehead__inner { max-width: var(--nb-shell); margin: 0 auto; padding: 34px 24px 36px; }
.nb-pagehead { border-bottom-color: var(--nb-line-strong); }
.nb-pagehead__title { font-size: 27px; margin: 8px 0 10px; font-weight: 700; }
.nb-pagehead__desc { font-size: 13.5px; color: var(--nb-ink-soft); max-width: 60ch; }

.nb-breadcrumb { font-size: 12px; color: var(--nb-muted); display: flex; flex-wrap: wrap; gap: 6px; }
.nb-breadcrumb--article { max-width: var(--nb-shell); margin: 0 auto; padding: 16px 24px 0; }

.nb-notice { border: 1px solid var(--nb-line); background: var(--nb-surface); padding: 16px 18px; margin-top: 28px; }
.nb-notice__label { font-size: 11px; letter-spacing: .16em; color: var(--nb-muted); margin-bottom: 10px; }
.nb-notice__list { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 13.5px; }
.nb-notice__list .nb-meta { margin-left: 6px; }
.nb-notice__more { display: inline-block; margin-top: 12px; font-size: 12.5px; color: var(--nb-accent); }

.nb-list { padding-top: 28px; }

.nb-shelf { padding-top: 28px; display: flex; flex-direction: column; }
.nb-shelf__item { border-bottom: 1px solid var(--nb-line); }
.nb-shelf__link { display: flex; gap: 20px; padding: 18px 0; align-items: flex-start; }
.nb-thumb--shelf { flex: none; width: 168px; aspect-ratio: 3 / 2; }
.nb-shelf__body { flex: 1 1 auto; min-width: 0; }
.nb-shelf__title { display: block; font-family: var(--nb-font-serif); font-size: 18px; font-weight: 600; margin: 6px 0 8px; }
.nb-shelf__desc { display: block; font-size: 13.5px; color: var(--nb-ink-soft); }
.nb-shelf__link:hover .nb-shelf__title { color: var(--nb-accent); }

.nb-episodes { padding-top: 28px; }
.nb-episodes__item { border-bottom: 1px solid var(--nb-line); padding: 16px 0; }
.nb-episodes__num {
  flex: none; width: 54px; font-family: var(--nb-font-serif); font-size: 13px;
  color: var(--nb-accent); padding-top: 2px;
}
.nb-episodes .nb-row__link { align-items: flex-start; }
.nb-episodes .nb-card__excerpt { margin-top: 6px; }

.nb-pagination { display: flex; justify-content: center; gap: 8px; padding: 32px 0 8px; }
.nb-pagination .page-numbers {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 34px; height: 34px; padding: 0 10px;
  border: 1px solid var(--nb-line); background: var(--nb-surface); font-size: 13px;
}
.nb-pagination .page-numbers.current { background: var(--nb-ink); border-color: var(--nb-ink); color: #fff; }
.nb-pagination .page-numbers:hover { border-color: var(--nb-ink); }

/* ============================================================
   11. フッター
   ============================================================ */
.nb-footer { background: var(--nb-surface-alt); border-top: 1px solid var(--nb-line-strong); margin-top: 0; }
.nb-footer__inner {
  max-width: var(--nb-shell); margin: 0 auto; padding: 40px 24px 28px;
  display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 32px;
}
.nb-footer__desc { font-size: 12.5px; color: var(--nb-ink-soft); margin-top: 10px; max-width: 42ch; }
.nb-footer__title { font-size: 11px; letter-spacing: .16em; color: var(--nb-muted); margin-bottom: 12px; font-family: var(--nb-font-sans); }
.nb-footer__nav li { font-size: 13px; padding: 4px 0; }
.nb-footer__bottom {
  max-width: var(--nb-shell); margin: 0 auto; padding: 14px 24px 28px;
  display: flex; justify-content: space-between; align-items: center;
  border-top: 1px solid var(--nb-line); font-size: 12px; color: var(--nb-muted);
}

/* ============================================================
   11.5 購読 / FAQ / 法務ページ / プロフィール
   ============================================================ */

/* ---------- 購読（問い合わせとは別導線） ---------- */
.nb-subscribe__title { font-size: 20px; margin-bottom: 8px; }
.nb-subscribe__lead { font-size: 13px; color: var(--nb-ink-soft); margin-bottom: 16px; }
.nb-subscribe__form { display: flex; gap: 8px; max-width: 460px; }
.nb-subscribe__input {
  flex: 1 1 auto; min-width: 0; padding: 9px 12px; font: inherit; font-size: 13px;
  color: var(--nb-ink); background: #fff;
  border: 1px solid var(--nb-line-strong); border-radius: var(--nb-radius);
}
.nb-subscribe__note { font-size: 11.5px; color: var(--nb-muted); margin-top: 10px; }
.nb-subscribe__socials { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.nb-subscribe__alt { font-size: 12.5px; color: var(--nb-muted); margin-top: 16px; }
.nb-subscribe__alt a { text-decoration: underline; text-underline-offset: 3px; }
.nb-subscribe__embed { max-width: 460px; margin-inline: auto; } /* ブロック要素は text-align:center では中央化しないため margin auto で中央寄せ（メルマガ埋め込みの左寄れ防止） */

.nb-band--dark .nb-subscribe__title { color: #fff; }
.nb-band--dark .nb-subscribe__lead { color: rgba(255, 255, 255, .72); }
.nb-band--dark .nb-subscribe__note,
.nb-band--dark .nb-subscribe__alt { color: rgba(255, 255, 255, .6); }
.nb-band--dark .nb-subscribe__alt a { color: #fff; }
.nb-band--dark .nb-subscribe__input { border-color: #fff; }

.nb-subscribe--side .nb-subscribe__form { flex-direction: column; gap: 6px; }
.nb-subscribe--side .nb-subscribe__socials { flex-direction: column; gap: 8px; margin-top: 10px; }
.nb-subscribe--side .nb-subscribe__socials .nb-btn { width: 100%; }
.nb-subscribe--side .nb-subscribe__note { color: rgba(255, 255, 255, .6); }
.nb-subscribe--side .nb-btn { width: 100%; }

/* 「登録する」は帯の明暗に関わらず埋もれないよう、アクセント色で常時強調（socials の Threads/LINE ボタンは対象外） */
.nb-subscribe__form button[type="submit"] { background: var(--nb-accent); border-color: var(--nb-accent); color: #fff; }
.nb-subscribe__form button[type="submit"]:hover { filter: brightness(.92); background: var(--nb-accent); border-color: var(--nb-accent); color: #fff; }

/* Threads ボタンのアイコン（ボタン文字色に追従） */
.nb-icon-threads { width: 15px; height: 15px; fill: currentColor; flex: none; }

/* 下部ダーク帯の購読は帯幅いっぱいに散らさず、中央にまとめて置く */
.nb-band--dark .nb-subscribe { max-width: 620px; margin-inline: auto; text-align: center; }
/* メール入力＋登録はコンパクトに中央、頻度トグルは独立行で中央 */
.nb-band--dark .nb-subscribe__form { max-width: none; flex-wrap: wrap; justify-content: center; }
.nb-band--dark .nb-subscribe__input { flex: 0 1 280px; text-align: left; }
.nb-band--dark .nb-subscribe__socials { justify-content: center; }

/* メルマガ頻度：ラジオをセグメント型トグルボタンに
   （.nb-subscribe で詳細度を上げ、mu-plugin の wp_head:20 インラインCSSより確実に勝たせる） */
.nb-subscribe .nb-nlform__freq {
  flex-basis: 100%; display: flex; justify-content: center; gap: 10px;
  border: 0; padding: 0; margin: 16px 0 0; opacity: 1; font-size: 12.5px;
}
.nb-subscribe .nb-nlform__freq label {
  margin: 0; padding: 8px 20px; line-height: 1.4; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 0;
  border: 1px solid currentColor; border-radius: 999px; opacity: .72; box-sizing: border-box;
  transition: background .15s ease, color .15s ease, border-color .15s ease, opacity .15s ease;
}
.nb-subscribe .nb-nlform__freq input[type="radio"] { position: absolute; opacity: 0; width: 0; height: 0; margin: 0; pointer-events: none; }
.nb-subscribe .nb-nlform__freq label:has(input:checked) { background: var(--nb-accent); border-color: var(--nb-accent); color: #fff; opacity: 1; }
.nb-subscribe .nb-nlform__freq label:hover { opacity: 1; }
.nb-subscribe .nb-nlform__freq label:focus-within { outline: 2px solid var(--nb-accent); outline-offset: 2px; }

/* フッターのサイトタイトル（トップへのリンク） */
.nb-footer__brand-link { display: inline-block; color: inherit; text-decoration: none; }
.nb-footer__brand-link:hover .nb-logo__kanji { color: var(--nb-accent); }

.nb-subscribe--block {
  border: 1px solid var(--nb-line-strong); background: var(--nb-surface);
  padding: 24px; margin-top: 36px;
}

/* ---------- FAQ ---------- */
.nb-faq { padding-top: 28px; }
.nb-faq__group { margin-bottom: 36px; }
.nb-faq__item { border-bottom: 1px solid var(--nb-line); }
.nb-faq__q {
  cursor: pointer; list-style: none; padding: 15px 32px 15px 0; position: relative;
  font-family: var(--nb-font-serif); font-size: 15px; font-weight: 600; line-height: 1.7;
}
.nb-faq__q::-webkit-details-marker { display: none; }
.nb-faq__q::after {
  content: '+'; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  font-size: 17px; color: var(--nb-accent); line-height: 1;
}
.nb-faq__item[open] .nb-faq__q::after { content: '−'; }
.nb-faq__q:hover { color: var(--nb-accent); }
.nb-faq__a {
  padding: 0 0 18px; font-size: 14px; line-height: 1.95; color: var(--nb-ink-soft);
}
.nb-faq__a a { color: var(--nb-accent); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 法務ページ（プライバシー・特商法） ---------- */
.nb-legal section { margin-top: 2.2em; }
.nb-legal h2 { font-size: 17px; }
.nb-legal dl { margin-top: 1em; }
.nb-legal dt { font-weight: 600; margin-top: 1em; }
.nb-legal dd { margin: .3em 0 0; padding-left: 1em; color: var(--nb-ink-soft); font-size: 14px; }
.nb-legal table { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 1em; }
.nb-legal th, .nb-legal td { border: 1px solid var(--nb-line); padding: 10px 14px; text-align: left; vertical-align: top; }
.nb-legal th { background: var(--nb-surface-alt); white-space: nowrap; width: 30%; }
.nb-legal__date { font-size: 12px; color: var(--nb-muted); margin-top: 2.4em; }

/* ---------- 書き手ページ ---------- */
.nb-profile {
  display: flex; gap: 24px; align-items: flex-start;
  border: 1px solid var(--nb-line-strong); background: var(--nb-surface);
  padding: 24px; margin-top: 32px;
}
.nb-profile__avatar img { width: 104px; height: 104px; border-radius: 50%; object-fit: cover; }
.nb-profile__name { font-family: var(--nb-font-serif); font-size: 20px; font-weight: 700; }
.nb-profile__bio { font-size: 13.5px; line-height: 1.95; color: var(--nb-ink-soft); margin: 12px 0 14px; }
.nb-profile__links { display: flex; flex-wrap: wrap; gap: 8px; }
.nb-about-entry { padding-top: 8px; }

@media (max-width: 520px) {
  .nb-profile { flex-direction: column; gap: 16px; }
  .nb-subscribe__form { flex-direction: column; }
  .nb-legal th { width: auto; white-space: normal; }
}

/* ============================================================
   12. レスポンシブ
   ============================================================ */
@media (max-width: 1080px) {
  :root { --nb-side: 264px; --nb-gap: 32px; }
  .nb-header__search { width: 150px; }
  .nb-nav__list { gap: 14px; }
}

/* 幅が足りなくなったらヘッダー内の検索を先に畳み、代わりにサイドバー検索を出す（検索窓は常に1つ） */
@media (max-width: 1120px) {
  .nb-header__search { display: none; }
  .nb-side__block--search { display: block; }
}

@media (max-width: 900px) {
  .nb-header__inner { gap: 12px; }
  .nb-header__cta { display: none; }
  .nb-menu-toggle { display: flex; }

  .nb-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--nb-bg); border-bottom: 1px solid var(--nb-line-strong);
    max-height: 0; overflow: hidden; transition: max-height .25s ease;
  }
  .nb-nav.is-open { max-height: 340px; }
  .nb-nav__list { flex-direction: column; gap: 0; padding: 8px 24px 16px; }
  .nb-nav__link { display: block; padding: 11px 0; border-bottom: 1px solid var(--nb-line); font-size: 15px; }

  .nb-shell { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .nb-side { position: static; padding-top: 8px; }
  .nb-side__block--search, .nb-side__block--cats { display: none; }

  .nb-spstrip { display: block; padding: 16px 20px; border-bottom: 1px solid var(--nb-line); background: var(--nb-surface); }
  .nb-spstrip .nb-chiprow { margin-top: 12px; }

  .nb-hero__inner { flex-direction: column; align-items: flex-start; gap: 16px; padding: 26px 20px; }
  .nb-hero__title { font-size: 20px; }
  .nb-hero__side { flex-direction: row; align-items: center; gap: 14px; }

  .nb-shell, .nb-band__inner, .nb-pagehead__inner, .nb-footer__inner, .nb-footer__bottom, .nb-breadcrumb--article { padding-left: 20px; padding-right: 20px; }

  /* 2カラム（よく読まれている／新着）はタブに畳む */
  .nb-tabs { display: flex; margin-bottom: 16px; }
  .nb-tabs__btn {
    flex: 1 1 0; padding: 9px 8px; font-size: 13px; text-align: center;
    border: 1px solid var(--nb-line-strong); background: transparent;
  }
  .nb-tabs__btn + .nb-tabs__btn { border-left: none; }
  .nb-tabs__btn.is-active { background: var(--nb-ink); color: #fff; }
  .nb-twocol { grid-template-columns: 1fr; gap: 0; }
  .nb-twocol .nb-section__title--small { display: none; }
  .nb-twocol__col[hidden] { display: none; }

  .nb-about { flex-direction: column; align-items: flex-start; gap: 16px; }
  .nb-footer__inner { grid-template-columns: 1fr 1fr; }
  .nb-footer__brand { grid-column: 1 / -1; }

  .nb-thumb--shelf { width: 108px; }
  .nb-shelf__link { gap: 14px; }
  .nb-card__title { font-size: 17.5px; }
}

@media (max-width: 520px) {
  .nb-thumb--row { width: 92px; }
  .nb-hero__title { font-size: 18px; }
  .nb-pagehead__title { font-size: 20px; }
  .nb-cta__actions .nb-btn { flex: 1 1 100%; }
  .nb-footer__inner { grid-template-columns: 1fr; }
  .nb-shelf__link { flex-direction: column; }
  .nb-thumb--shelf { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .nb *, .nb *::before, .nb *::after { transition: none !important; animation: none !important; }
}

/* ============================================================
   13. PR表記（アフィリエイト・広告明記）
   ============================================================ */
.nb-pr-notice {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 16px;
  padding: 4px 10px;
  font-size: 11.5px;
  color: var(--nb-muted);
  background: var(--nb-surface-alt);
  border: 1px solid var(--nb-line);
  border-radius: var(--nb-radius);
  letter-spacing: .02em;
  line-height: 1.4;
}
.nb-pr-notice__icon {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 4px;
  background: var(--nb-muted);
  color: #fff;
  border-radius: 2px;
  line-height: 1.2;
}

/* ============================================================
   14. ガイド・CTAボックス（記事末の案内）
   ============================================================ */
.nb-guide-box {
  margin: 2.5rem 0;
  padding: 1.4rem 1.5rem;
  background: var(--nb-surface);
  border: 1px solid var(--nb-line);
  border-left: 3px solid var(--nb-accent);
  border-radius: var(--nb-radius);
}
.nb-guide-box__title { font-size: 1.15rem; margin: 0 0 .6rem; }
.nb-guide-box__lead { font-size: .95rem; line-height: 1.85; margin: 0 0 .7rem; color: var(--nb-ink-soft); }
.nb-guide-box__actions { margin: .5rem 0 .9rem; }
.nb-guide-box__note { font-size: .85rem; line-height: 1.75; margin: 0; color: var(--nb-muted); }
.nb-guide-box__note a { color: var(--nb-ink); text-decoration: underline; }