/* =========================================================
   株式会社DnD コーポレートサイト
   styles.css — 標準HTML/CSS（フレームワーク不使用）
   ========================================================= */

/* ---- カラートークン ---------------------------------------- */
:root {
  --bg:    #fcfcfa;
  --ink:   #1a1a17;
  --sub:   #73726b;
  --accent:#1f3a52;
  --line:  rgba(26,26,23,0.14);
  --panel: #f5f4ef;
  --faint: rgba(26,26,23,0.05);
}

/* ---- ベース ------------------------------------------------ */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Zen Kaku Gothic New', -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}
::selection { background: #1f3a52; color: #fff; }
img { max-width: 100%; }

/* フォントユーティリティ */
.serif    { font-family: 'Zen Old Mincho', serif; }
.latin    { font-family: 'Cormorant Garamond', serif; }

/* ---- スクロール出現アニメーション ------------------------- */
.reveal {
  transition: opacity 1.05s cubic-bezier(.2,.6,.2,1),
              transform 1.05s cubic-bezier(.2,.6,.2,1);
}
.reveal.is-hidden { opacity: 0; transform: translateY(34px); }
[data-par] { will-change: transform; }

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

/* =========================================================
   ヘッダー
   ========================================================= */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  max-width: 1280px; margin: 0 auto;
  padding: 17px clamp(20px,5vw,64px);
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; flex-wrap: wrap;
}

/* ロゴ */
.brand {
  display: flex; align-items: baseline; gap: 11px;
  color: var(--ink); text-decoration: none;
  transition: opacity .3s;
}
.brand:hover { opacity: .6; }
.brand__mark { font-family: 'Cormorant Garamond', serif; font-weight: 500; font-size: 27px; letter-spacing: .06em; line-height: 1; }
.brand__sub  { font-size: 9.5px; letter-spacing: .3em; color: var(--sub); white-space: nowrap; }

/* ナビ */
.main-nav { display: flex; align-items: center; gap: clamp(18px,2.6vw,42px); }
.main-nav__link {
  padding: 6px 0;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  color: var(--ink); text-decoration: none;
  opacity: .45; transition: opacity .35s;
}
.main-nav__link:hover,
.main-nav__link.is-active { opacity: 1; }
.main-nav__label { font-size: 13px; letter-spacing: .13em; white-space: nowrap; }
.main-nav__line  { height: 1px; width: 16px; background: var(--accent); opacity: 0; transition: opacity .35s; }
.main-nav__link.is-active .main-nav__line { opacity: 1; }

/* =========================================================
   レイアウト共通
   ========================================================= */
.section { border-top: 1px solid var(--line); }
.section--first { border-top: 0; }
.section--panel  { background: var(--panel); }
.section--accent { background: var(--accent); color: #f3f2ee; }

.shell { max-width: 1180px; margin: 0 auto; padding: clamp(72px,11vw,150px) clamp(20px,6vw,80px); }
.shell--hero-centered { padding: clamp(96px,16vh,200px) clamp(20px,6vw,80px) clamp(72px,9vw,124px); }
.shell--intro         { padding: clamp(80px,12vw,150px) clamp(20px,6vw,80px) clamp(48px,7vw,86px); }
.shell--flush         { padding: 0 clamp(20px,6vw,80px); }
.shell--mid           { padding: clamp(64px,10vw,130px) clamp(20px,6vw,80px); }
.shell--cta           { padding: clamp(80px,12vw,158px) clamp(20px,6vw,80px); }
.shell--cta-sm        { padding: clamp(80px,12vw,150px) clamp(20px,6vw,80px); }

/* 2カラム（ラベル＋本文） */
.two-col { display: grid; grid-template-columns: 1fr 2fr; gap: clamp(28px,6vw,80px); }
.col-text { max-width: 640px; }

/* 小見出しラベル */
.eyebrow { display: block; font-size: 11px; letter-spacing: .24em; color: var(--accent); }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.mb-intro   { margin-bottom: clamp(22px,3vw,34px); }
.mb-profile { margin-bottom: clamp(30px,4vw,50px); }
.pt-8 { padding-top: 8px; }

/* セクション見出し */
.section-title { font-family: 'Zen Old Mincho', serif; font-weight: 600; margin: 0; letter-spacing: .05em; }
.section-title--lg { font-size: clamp(28px,4vw,46px); line-height: 1.4; }
.section-title--md { font-size: clamp(24px,3vw,36px); line-height: 1.5; }
.section-title--sm { font-size: clamp(22px,2.6vw,32px); line-height: 1.6; }

/* =========================================================
   ヒーロー（トップ）
   ========================================================= */
.hero { position: relative; overflow: hidden; }

.hero__watermark {
  position: absolute; pointer-events: none; z-index: 0;
  font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 400;
  line-height: 1; color: var(--accent); white-space: nowrap;
}
.hero__watermark--centered {
  left: -12%; right: -12%; top: 33%; text-align: center;
  font-size: clamp(68px,17vw,232px); letter-spacing: .005em; opacity: .07;
}

.hero__inner { position: relative; z-index: 2; }
.hero__inner--centered { max-width: 920px; margin: 0 auto; text-align: center; }

.hero__title { font-family: 'Zen Old Mincho', serif; font-weight: 600; margin: 0; color: var(--ink); }
.hero__title--centered { font-size: clamp(40px,7.6vw,106px); line-height: 1.34; letter-spacing: .05em; }

.hero__rule { width: 1px; height: clamp(40px,6vw,68px); background: var(--accent); margin: clamp(34px,5vw,54px) auto clamp(30px,4vw,46px); }
.hero__lead { max-width: 600px; margin: 0 auto; font-size: 15px; line-height: 2.2; letter-spacing: .06em; color: var(--sub); }

/* =========================================================
   思想（PHILOSOPHY）
   ========================================================= */
.kicker-title { font-family: 'Zen Old Mincho', serif; font-size: clamp(22px,2.6vw,30px); font-weight: 500; line-height: 1.7; letter-spacing: .05em; }
.philosophy-lead { margin: 0 0 26px; font-size: clamp(16px,1.8vw,19px); line-height: 2.25; letter-spacing: .06em; }
.philosophy-body { margin: 0; font-size: 14px; line-height: 2.2; letter-spacing: .06em; color: var(--sub); }

/* =========================================================
   事業（3本柱）
   ========================================================= */
.biz-head { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 18px; margin-bottom: clamp(34px,5vw,60px); }

.pillar { display: grid; grid-template-columns: auto 1fr; border-top: 1px solid var(--line); }
.pillar--top    { gap: clamp(20px,5vw,64px); align-items: baseline; padding: clamp(28px,4vw,44px) 0; }
.pillar--detail { gap: clamp(20px,5vw,72px); padding: clamp(44px,7vw,88px) 0; border-top: 0; border-bottom: 1px solid var(--line); }
.pillar__no { font-family: 'Cormorant Garamond', serif; font-weight: 300; color: var(--accent); }
.pillar--top .pillar__no    { font-size: clamp(34px,4.4vw,60px); line-height: 1; }
.pillar--detail .pillar__no { font-size: clamp(44px,7vw,100px); line-height: .9; }
.pillar__body { max-width: 720px; }
.pillar__head { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: 12px; }
.pillar__title { font-family: 'Zen Old Mincho', serif; font-weight: 600; font-size: clamp(19px,2.2vw,26px); margin: 0; letter-spacing: .05em; }
.pillar__en { font-family: 'Cormorant Garamond', serif; font-style: italic; font-size: 15px; color: var(--sub); }
.pillar__desc { margin: 0; font-size: 15px; line-height: 2.1; letter-spacing: .05em; color: var(--sub); }

/* 事業詳細ページ用 */
.pillar__en-block { font-family: 'Cormorant Garamond', serif; font-style: italic; font-size: 16px; color: var(--sub); margin-bottom: 10px; }
.pillar__title-lg { font-family: 'Zen Old Mincho', serif; font-weight: 600; font-size: clamp(24px,3.2vw,40px); margin: 0 0 22px; letter-spacing: .05em; }
.pillar__lead { margin: 0 0 18px; font-size: clamp(16px,1.7vw,18px); line-height: 2.15; letter-spacing: .06em; }
.pillar__detail { margin: 0; font-size: 15px; line-height: 2.15; letter-spacing: .05em; color: var(--sub); }

.rule-cap { border-top: 1px solid var(--line); }

/* 受託開発 */
.subbiz-lead { margin: 0 0 30px; font-size: 16px; line-height: 2.2; letter-spacing: .06em; }
.subsvc { display: flex; gap: clamp(22px,4vw,52px); flex-wrap: wrap; }
.subsvc__en { font-family: 'Cormorant Garamond', serif; font-style: italic; font-size: 14px; color: var(--sub); margin-bottom: 5px; }
.subsvc__ja { font-family: 'Zen Old Mincho', serif; font-size: 17px; letter-spacing: .04em; }

/* =========================================================
   CTA
   ========================================================= */
.cta-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; flex-wrap: wrap; }
.cta__eyebrow { font-family: 'Cormorant Garamond', serif; font-style: italic; font-size: 18px; opacity: .7; margin-bottom: 22px; }
.cta__title { font-family: 'Zen Old Mincho', serif; font-weight: 500; line-height: 1.45; letter-spacing: .05em; margin: 0; }
.cta__title--lg { font-size: clamp(30px,4.6vw,60px); }
.cta__title--sm { font-size: clamp(28px,4.4vw,56px); }

/* ボタン・リンク */
.btn-ghost {
  display: inline-flex; align-items: center; gap: .45em;
  border: 1px solid rgba(255,255,255,.45); background: none; color: #f3f2ee;
  cursor: pointer; padding: 18px 42px; font-size: 15px; letter-spacing: .1em;
  font-family: 'Zen Kaku Gothic New', sans-serif; text-decoration: none;
  transition: background .4s, color .4s;
}
.btn-ghost:hover { background: #f3f2ee; color: var(--accent); }
.btn-solid {
  align-self: flex-start; margin-top: 8px;
  border: 0; background: var(--accent); color: #f3f2ee;
  cursor: pointer; padding: 17px 52px; font-size: 15px; letter-spacing: .12em;
  font-family: 'Zen Kaku Gothic New', sans-serif; text-decoration: none;
  transition: opacity .3s;
}
.btn-solid:hover { opacity: .86; }
.text-link {
  display: inline-flex; align-items: center; gap: .45em;
  border: 0; background: none; cursor: pointer; padding: 0 0 4px;
  color: var(--ink); font-size: 14px; letter-spacing: .08em;
  border-bottom: 1px solid var(--accent);
  font-family: 'Zen Kaku Gothic New', sans-serif; text-decoration: none;
  transition: color .3s;
}
.text-link:hover { color: var(--accent); }
.arrow { font-family: 'Cormorant Garamond', serif; }

/* =========================================================
   会社概要
   ========================================================= */
.intro { max-width: 880px; }
.intro__title { font-family: 'Zen Old Mincho', serif; font-weight: 600; margin: 0; letter-spacing: .05em; }
.intro__title--business { font-size: clamp(34px,5.6vw,76px); line-height: 1.4; margin-bottom: clamp(28px,4vw,44px); }
.intro__title--company  { font-size: clamp(32px,5vw,68px); line-height: 1.45; }
.intro__title--contact  { font-size: clamp(34px,5.6vw,72px); line-height: 1.4; margin-bottom: clamp(26px,4vw,40px); }
.intro__lead { margin: 0; max-width: 640px; font-size: 16px; line-height: 2.2; letter-spacing: .06em; color: var(--sub); }
.intro__lead--narrow { max-width: 600px; font-size: 15px; }

.mission-lead { margin: 0 0 26px; font-family: 'Zen Old Mincho', serif; font-size: clamp(19px,2.2vw,26px); line-height: 1.95; letter-spacing: .05em; }
.mission-body { margin: 0; font-size: 15px; line-height: 2.2; letter-spacing: .06em; color: var(--sub); }

.rep-body { margin: 0 0 22px; font-size: 16px; line-height: 2.25; letter-spacing: .06em; }
.rep-sign { margin-top: 38px; display: flex; align-items: baseline; gap: 16px; }
.rep-sign__role { font-size: 12px; letter-spacing: .1em; color: var(--sub); }
.rep-sign__name { font-family: 'Zen Old Mincho', serif; font-size: 22px; letter-spacing: .08em; }

/* 企業情報テーブル */
.info-wrap { max-width: 920px; }
.info-row { display: grid; grid-template-columns: 220px 1fr; gap: clamp(8px,3vw,40px); padding: clamp(20px,3vw,30px) 0; border-top: 1px solid var(--line); }
.info-row__k { font-size: 13px; letter-spacing: .12em; color: var(--sub); padding-top: 3px; }
.info-row__v { font-size: 15px; line-height: 2; letter-spacing: .05em; }

/* =========================================================
   お問い合わせフォーム
   ========================================================= */
.contact-col { max-width: 680px; }
.form { display: flex; flex-direction: column; gap: clamp(28px,4vw,40px); }
.field__label { display: block; font-size: 11px; letter-spacing: .18em; color: var(--sub); margin-bottom: 12px; }
.field__input {
  width: 100%; border: 0; border-bottom: 1px solid var(--line); background: none;
  padding: 10px 0; font-size: 16px; color: var(--ink); outline: none;
  font-family: 'Zen Kaku Gothic New', sans-serif; transition: border-color .3s;
}
.field__input:focus { border-bottom-color: var(--accent); }
textarea.field__input { resize: vertical; line-height: 1.9; }
input::placeholder, textarea::placeholder { color: rgba(26,26,23,0.3); }

.thanks { padding: clamp(40px,6vw,80px) 0; }
.thanks__rule { width: 1px; height: 48px; background: var(--accent); margin-bottom: 32px; }
.thanks__title { font-family: 'Zen Old Mincho', serif; font-weight: 600; font-size: clamp(26px,3.2vw,40px); margin: 0 0 22px; letter-spacing: .05em; line-height: 1.5; }
.thanks__text { margin: 0; font-size: 15px; line-height: 2.2; letter-spacing: .06em; color: var(--sub); max-width: 460px; }

/* =========================================================
   フッター
   ========================================================= */
.site-footer { border-top: 1px solid var(--line); }
.site-footer__inner { max-width: 1280px; margin: 0 auto; padding: clamp(48px,7vw,80px) clamp(20px,5vw,64px) clamp(34px,4vw,48px); }
.footer-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
.footer-brand { display: flex; align-items: baseline; gap: 11px; margin-bottom: 14px; }
.footer-brand__mark { font-family: 'Cormorant Garamond', serif; font-weight: 500; font-size: 30px; letter-spacing: .06em; line-height: 1; }
.footer-brand__sub { font-size: 9.5px; letter-spacing: .3em; color: var(--sub); white-space: nowrap; }
.footer-addr { font-size: 13px; letter-spacing: .05em; color: var(--sub); line-height: 2; }
.footer-nav { display: flex; flex-direction: column; align-items: flex-start; gap: 13px; }
.footer-nav__link { color: var(--ink); font-size: 13px; letter-spacing: .1em; opacity: .75; text-decoration: none; transition: opacity .3s; }
.footer-nav__link:hover { opacity: 1; }
.footer-copy { border-top: 1px solid var(--line); margin-top: clamp(36px,5vw,56px); padding-top: 22px; font-family: 'Cormorant Garamond', serif; font-size: 13px; letter-spacing: .08em; color: var(--sub); }

/* =========================================================
   FAQ（よくあるご質問）
   ========================================================= */
.faq { max-width: 920px; border-top: 1px solid var(--line); }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__q {
  list-style: none; cursor: pointer; position: relative;
  padding: clamp(22px,3vw,30px) 46px clamp(22px,3vw,30px) 0;
  font-family: 'Zen Old Mincho', serif; font-weight: 500;
  font-size: clamp(16px,1.9vw,20px); letter-spacing: .04em; line-height: 1.7;
  transition: color .3s;
}
.faq__q::-webkit-details-marker { display: none; }
.faq__q:hover { color: var(--accent); }
.faq__q::after {
  content: '+'; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  font-family: 'Cormorant Garamond', serif; font-size: 30px; font-weight: 400;
  color: var(--accent); transition: transform .3s;
}
.faq__item[open] .faq__q::after { content: '\2212'; }
.faq__a {
  padding: 0 46px clamp(24px,3vw,32px) 0; max-width: 780px;
  font-size: 15px; line-height: 2.15; letter-spacing: .05em; color: var(--sub);
}

/* =========================================================
   規約・法務ページ
   ========================================================= */
.legal { max-width: 820px; }
.legal__block { padding: clamp(22px,3vw,32px) 0; border-top: 1px solid var(--line); }
.legal__block:first-child { border-top: 0; padding-top: 0; }
.legal__h { font-family: 'Zen Old Mincho', serif; font-weight: 600; font-size: clamp(17px,2vw,21px); margin: 0 0 16px; letter-spacing: .04em; }
.legal__p { margin: 0 0 14px; font-size: 15px; line-height: 2.15; letter-spacing: .05em; color: var(--sub); }
.legal__p:last-child { margin-bottom: 0; }
.legal__list { margin: 6px 0 0; padding-left: 1.25em; }
.legal__list li { font-size: 15px; line-height: 2.1; letter-spacing: .05em; color: var(--sub); }
.legal__date { margin-top: clamp(30px,4vw,46px); font-size: 13px; letter-spacing: .06em; color: var(--sub); }

/* フッターの法務リンク */
.footer-legal { display: inline-flex; gap: 18px; margin-right: 16px; flex-wrap: wrap; font-family: 'Zen Kaku Gothic New', sans-serif; font-size: 12px; letter-spacing: .06em; }
.footer-legal a { color: var(--sub); text-decoration: none; border-bottom: 1px solid var(--line); padding-bottom: 1px; transition: color .3s; }
.footer-legal a:hover { color: var(--accent); }

/* =========================================================
   ブログ / コラム
   ========================================================= */
/* 記事 */
.post { max-width: 760px; margin: 0 auto; }
.post__meta { font-size: 12px; letter-spacing: .1em; color: var(--sub); margin-bottom: 18px; }
.post__title { font-family: 'Zen Old Mincho', serif; font-weight: 600; font-size: clamp(26px,3.8vw,42px); line-height: 1.5; letter-spacing: .04em; margin: 0 0 28px; }
.post__lead { font-size: clamp(16px,1.8vw,18px); line-height: 2.1; letter-spacing: .04em; color: var(--ink); margin: 0 0 8px; }

.article-body { font-size: 15.5px; line-height: 2.2; letter-spacing: .03em; color: var(--sub); }
.article-body h2 { font-family: 'Zen Old Mincho', serif; font-weight: 600; color: var(--ink); font-size: clamp(20px,2.4vw,26px); letter-spacing: .04em; line-height: 1.6; margin: 56px 0 20px; }
.article-body h3 { font-family: 'Zen Old Mincho', serif; font-weight: 500; color: var(--ink); font-size: clamp(17px,2vw,20px); letter-spacing: .04em; margin: 36px 0 14px; }
.article-body p { margin: 0 0 22px; }
.article-body strong { color: var(--ink); font-weight: 500; }
.article-body ul { margin: 0 0 24px; padding-left: 1.3em; }
.article-body li { margin-bottom: 10px; line-height: 2.0; }
.article-body blockquote { margin: 0 0 24px; padding: 6px 0 6px 24px; border-left: 2px solid var(--accent); color: var(--ink); font-family: 'Zen Old Mincho', serif; line-height: 2.0; }
.article-cta { margin-top: clamp(48px,7vw,72px); padding-top: clamp(36px,5vw,52px); border-top: 1px solid var(--line); }

/* 資料カード一覧 */
.media-list { max-width: 820px; margin: 0 auto; display: grid; gap: clamp(12px,1.6vw,16px); }
.media-card { display: grid; grid-template-columns: 160px 1fr; gap: clamp(16px,2.2vw,26px); align-items: center;
  text-decoration: none; color: inherit; border: 1px solid var(--line); padding: clamp(12px,1.4vw,15px);
  background: var(--bg); transition: box-shadow .35s, transform .35s; }
.media-card:hover { box-shadow: 0 10px 28px rgba(26,26,23,.06); transform: translateY(-2px); }
.media-card__cover { width: 100%; height: auto; display: block; border: 1px solid var(--line); }
.media-card__meta { font-size: 11px; letter-spacing: .1em; color: var(--sub); margin-bottom: 8px; }
.media-card__title { font-family: 'Zen Old Mincho', serif; font-weight: 600; font-size: clamp(15px,1.7vw,18px); line-height: 1.55; letter-spacing: .03em; margin: 0; }
.media-card__excerpt { font-size: 13.5px; line-height: 1.95; letter-spacing: .02em; color: var(--sub); margin: 0 0 16px; }
.media-card__actions { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.media-pill { display: inline-flex; align-items: center; font-size: 12px; letter-spacing: .08em; color: var(--accent); border-bottom: 1px solid var(--accent); padding-bottom: 2px; }
.media-pill--ghost { color: var(--sub); border-bottom-color: var(--line); }
@media (max-width: 560px) { .media-card { grid-template-columns: 116px 1fr; gap: 14px; } }

/* トップのコラム・サムネ横スクロール */
.col-thumbs { display: flex; gap: clamp(16px,2vw,24px); overflow-x: auto; padding-bottom: 14px; scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch; }
.col-thumbs::-webkit-scrollbar { height: 6px; }
.col-thumbs::-webkit-scrollbar-track { background: transparent; }
.col-thumbs::-webkit-scrollbar-thumb { background: var(--line); border-radius: 3px; }
.col-thumb { flex: 0 0 auto; width: clamp(170px,20vw,220px); scroll-snap-align: start; display: block; border: 1px solid var(--line); transition: box-shadow .35s, transform .35s; }
.col-thumb:hover { box-shadow: 0 12px 34px rgba(26,26,23,.07); transform: translateY(-2px); }
.col-thumb img { width: 100%; height: auto; display: block; }

/* PDF ダウンロードボタン */
.dl-box { margin: clamp(28px,4vw,40px) 0; padding: clamp(22px,3vw,30px); border: 1px solid var(--line); background: var(--panel); display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.dl-box__text { font-size: 14px; letter-spacing: .04em; color: var(--ink); }
.dl-btn { display: inline-flex; align-items: center; gap: .55em; border: 1px solid var(--accent); color: var(--accent); background: none;
  padding: 14px 30px; font-size: 14px; letter-spacing: .08em; text-decoration: none; white-space: nowrap;
  font-family: 'Zen Kaku Gothic New', sans-serif; transition: background .3s, color .3s; }
.dl-btn:hover { background: var(--accent); color: #f3f2ee; }

/* 資料ダウンロード・リード取得フォーム */
.dl-card { margin: clamp(30px,4vw,44px) 0; padding: clamp(24px,3.4vw,36px); border: 1px solid var(--line); background: var(--panel); }
.dl-card__title { font-family: 'Zen Old Mincho', serif; font-weight: 600; font-size: clamp(17px,2vw,22px); letter-spacing: .03em; margin: 10px 0 12px; }
.dl-card__note { font-size: 13.5px; line-height: 1.95; letter-spacing: .02em; color: var(--sub); margin: 0 0 24px; }
.dl-fields { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(18px,2.5vw,26px); margin-bottom: 26px; }
.dl-fields > div:last-child { grid-column: 1 / -1; }
@media (max-width: 640px) { .dl-fields { grid-template-columns: 1fr; } }
.dl-done__text { font-size: 14px; line-height: 2.0; letter-spacing: .03em; color: var(--ink); margin: 0 0 20px; }

/* 一覧（旧・テキストリスト） */
.post-list { max-width: 880px; margin: 0 auto; }
.post-card { display: block; text-decoration: none; color: inherit; padding: clamp(28px,4vw,40px) 0; border-top: 1px solid var(--line); transition: opacity .3s; }
.post-card:last-child { border-bottom: 1px solid var(--line); }
.post-card:hover { opacity: .6; }
.post-card__meta { font-size: 12px; letter-spacing: .1em; color: var(--sub); margin-bottom: 12px; }
.post-card__title { font-family: 'Zen Old Mincho', serif; font-weight: 600; font-size: clamp(19px,2.2vw,25px); line-height: 1.6; letter-spacing: .04em; margin: 0 0 12px; }
.post-card__excerpt { font-size: 14px; line-height: 2.0; letter-spacing: .03em; color: var(--sub); margin: 0; max-width: 680px; }

/* 記事冒頭の要点ボックス */
.post-summary { margin: clamp(28px,4vw,40px) 0; padding: clamp(20px,3vw,28px) clamp(22px,3vw,30px); background: var(--panel); border-left: 3px solid var(--accent); }
.post-summary__h { font-family: 'Zen Old Mincho', serif; font-weight: 600; font-size: 14px; letter-spacing: .08em; color: var(--accent); margin: 0 0 14px; }
.post-summary ul { margin: 0; padding-left: 1.2em; }
.post-summary li { font-size: 14.5px; line-height: 2.0; letter-spacing: .03em; color: var(--ink); margin-bottom: 8px; }
.post-summary li:last-child { margin-bottom: 0; }

/* 記事内FAQの見出し余白 */
.article-faq { margin-top: clamp(40px,6vw,64px); }

/* =========================================================
   レスポンシブ
   ========================================================= */
@media (max-width: 840px) {
  .two-col { grid-template-columns: 1fr; gap: 26px; }
  .pillar { grid-template-columns: 1fr; gap: 14px; }
  .info-row { grid-template-columns: 1fr; }
  .cta-row { flex-direction: column; align-items: flex-start; gap: 30px; }
  .footer-cols { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .main-nav { gap: 16px; }
}