/* ============================================================
   site.css — トップページと会社案内で共有するスタイル
   もとは index.html のインライン <style> にあったものを、/about の新設に
   あわせて外部ファイルへ切り出した。読み込み順は theme.css → site.css →
   ページ固有の <style>。ページ固有の指定が後勝ちになるようにしている。
   ============================================================ */

  /* ============================================================
     本ページ固有スタイル 目次
     （色・ダークモード・リセット等の共通分は theme.css 側）
       BASE ………………… html / body / スキップリンク
       NAV ………………… 固定ナビ・ハンバーガー・モバイルメニュー
       HERO ……………… ピン留め全画面・縁が集い環を成す演出
       SECTION COMMON … セクション見出し・レイアウト共通
       ABOUT ……………… 社名由来・会社概要（company-*）
       PROFILE …………… 代表紹介
       WORKS ……………… 対応領域アコーディオン
       VISION / CONTACT / FOOTER
       ANIMATIONS ……… reveal 演出・キーフレーム
       PAIN POINTS / STRENGTHS（選ばれる理由）
       SAKURA PETALS … 花びら演出
       SCROLL-DRIVEN UX / RESPONSIVE
     ============================================================ */

  /* ── BASE ── */
  html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
    scrollbar-color: color-mix(in srgb, var(--accent-gold) 55%, transparent) transparent;
  }

  body {
    background: var(--paper);
    color: var(--ink);
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 300;
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
  }
  body.menu-open { overflow: hidden; }

  p { text-wrap: pretty; }

  /* スキップリンク（キーボード操作時のみ出現） */
  .skip-link {
    position: fixed;
    top: -100%;
    left: 1rem;
    z-index: 300;
    background: var(--accent);
    color: var(--paper);
    padding: 0.6rem 1.2rem;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-decoration: none;
    transition: top 0.3s ease;
  }
  .skip-link:focus-visible { top: 1rem; }

  /* ── NAV ── */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 2.5rem;
    padding: 1.2rem 4rem;
    background: var(--nav-bg);
    backdrop-filter: blur(8px);
    border-bottom: 0.5px solid var(--paper-dark);
    transition: padding 0.35s ease, box-shadow 0.35s ease;
  }
  nav.nav-scrolled {
    padding-top: 0.65rem;
    padding-bottom: 0.65rem;
    box-shadow: 0 10px 30px var(--ring);
  }

  .nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Zen Old Mincho', serif;
    font-size: 1.15rem;
    letter-spacing: 0.2em;
    color: var(--ink);
    text-decoration: none;
    margin-right: auto;
  }
  .nav-logo span { color: var(--accent-gold); }

  .nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
  }
  .nav-links a {
    position: relative;
    font-size: 0.78rem;
    letter-spacing: 0.15em;
    color: var(--ink-mid);
    text-decoration: none;
    transition: color 0.3s;
  }
  .nav-links a::after {
    content: "";
    position: absolute;
    left: 0; right: 0;
    bottom: -6px;
    height: 1px;
    background: var(--accent-gold);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.3s ease;
  }
  .nav-links a:hover { color: var(--accent); }
  .nav-links a:hover::after,
  .nav-links a.active::after { transform: scaleX(1); }
  .nav-links a.active { color: var(--accent); }

  .nav-ctrl {
    display: flex;
    align-items: center;
    gap: 0.8rem;
  }

  /* テーマ切替ボタンのスタイルは theme.css 側 */

  /* モバイルメニュー背後のスクリム */
  .nav-scrim { display: none; }

  /* ハンバーガーボタン（モバイル用・デフォルト非表示） */
  .nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 110;
  }
  .nav-toggle span {
    display: block;
    width: 24px;
    height: 1.5px;
    background: var(--ink);
    transition: transform 0.3s, opacity 0.3s;
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

  /* ── HERO（ピン留め全画面・縁が集い環を成す） ── */
  .hero {
    position: relative;
    height: 100vh;            /* フォールバック：通常の1画面。対応ブラウザで縦長化＆ピン留め */
  }

  .hero-stage {
    position: relative;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    padding: 8rem 4rem 4rem;
  }

  /* 全画面ビジュアル層（環・花びら・ロゴ） */
  .hero-scene {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
  }

  .hero-logo {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 150px;
    height: auto;
    margin: 0;
    transform: translate(-50%, -50%);
    z-index: 2;
  }

  /* スクロール誘導 */
  .hero-scroll-hint {
    position: absolute;
    left: 50%;
    bottom: 2.2rem;
    transform: translateX(-50%);
    z-index: 3;
    font-size: 0.62rem;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: var(--accent-gold);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }
  .hero-scroll-hint span {
    width: 1px;
    height: 34px;
    background: linear-gradient(var(--accent-gold), transparent);
  }

  .hero-content {
    position: relative;
    z-index: 3;
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
  }

  .hero-text { max-width: 540px; }

  .hero-en {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.72rem;
    letter-spacing: 0.35em;
    color: var(--accent-gold);
    text-transform: uppercase;
    margin-bottom: 1.5rem;
  }

  .hero-title {
    font-family: 'Zen Old Mincho', serif;
    font-size: clamp(2.8rem, 5vw, 4.2rem);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: 0.05em;
    color: var(--ink);
    margin-bottom: 1.2rem;
    text-wrap: balance;
  }

  .hero-title .kanji-accent {
    color: var(--accent-gold);
  }

  /* ヒーロー見出し：1行ずつ立ち上がるラインリビール */
  .ht-line {
    display: block;
    overflow: hidden;
    padding-block: 0.1em;
    margin-block: -0.1em;
  }
  .ht-inner {
    display: inline-block;
    transform: translateY(115%);
    animation: lineRise 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    animation-delay: calc(0.15s + var(--d, 0) * 0.14s);
  }
  @keyframes lineRise {
    to { transform: translateY(0); }
  }

  .hero-subtitle {
    font-family: 'Shippori Mincho', serif;
    font-size: 1.05rem;
    color: var(--ink-mid);
    line-height: 2.0;
    margin-bottom: 2.5rem;
    letter-spacing: 0.08em;
  }

  .hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.85rem 2rem;
    background: var(--accent);
    color: var(--paper);
    text-decoration: none;
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    transition: background 0.3s, transform 0.2s;
  }
  .hero-cta:hover { background: var(--ink); transform: translateY(-2px); }
  .hero-cta svg { width: 14px; height: 14px; }

  /* ── SECTION COMMON ── */
  section {
    padding: 7rem 4rem;
  }

  .section-inner {
    max-width: 1100px;
    margin: 0 auto;
  }

  .section-label {
    font-size: 0.7rem;
    letter-spacing: 0.4em;
    color: var(--accent-gold);
    text-transform: uppercase;
    margin-bottom: 0.8rem;
  }

  .section-title {
    font-family: 'Zen Old Mincho', serif;
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--ink);
    margin-bottom: 3rem;
    line-height: 1.4;
    text-wrap: balance;
    word-break: auto-phrase;
  }

  .divider {
    width: 40px;
    height: 1px;
    background: var(--accent-gold);
    margin: 1.5rem 0 2.5rem;
  }

  /* ── ABOUT ── */
  .about {
    background: var(--paper-mid);
  }

  .about-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 6rem;
    align-items: start;
  }

  .about-left {}

  .about-philosophy {
    font-family: 'Shippori Mincho', serif;
    font-size: 1.5rem;
    line-height: 2.0;
    letter-spacing: 0.1em;
    color: var(--ink);
    margin-bottom: 2rem;
  }

  .about-philosophy .em {
    color: var(--accent-gold);
    font-weight: 600;
  }

  .about-body {
    font-size: 0.92rem;
    color: var(--ink-mid);
    line-height: 2.0;
  }

  .about-right {}

  .name-origin {
    background: var(--paper);
    border: 0.5px solid var(--paper-dark);
    padding: 2.5rem;
    margin-bottom: 2rem;
  }

  .name-origin-title {
    font-family: 'Zen Old Mincho', serif;
    font-size: 0.78rem;
    letter-spacing: 0.3em;
    color: var(--accent-gold);
    margin-bottom: 1.5rem;
  }

  .kanji-breakdown {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
  }

  .kanji-item {
    text-align: center;
  }

  .kanji-char {
    font-family: 'Zen Old Mincho', serif;
    font-size: 2.5rem;
    color: var(--accent);
    display: block;
    line-height: 1;
    margin-bottom: 0.4rem;
  }

  .kanji-reading {
    font-size: 0.68rem;
    letter-spacing: 0.15em;
    color: var(--ink-light);
  }

  .kanji-meaning {
    font-family: 'Shippori Mincho', serif;
    font-size: 0.8rem;
    color: var(--ink-mid);
    margin-top: 0.3rem;
  }

  .kanji-sep {
    font-size: 1.5rem;
    color: var(--paper-dark);
    align-self: center;
  }

  .origin-text {
    font-family: 'Shippori Mincho', serif;
    font-size: 0.9rem;
    line-height: 2.0;
    color: var(--ink-mid);
    letter-spacing: 0.06em;
  }

  /* 会社概要カード */
  .company-card {
    background: var(--paper);
    border: 0.5px solid var(--paper-dark);
    padding: 2rem 2.5rem;
  }
  .company-card-label {
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    color: var(--accent-gold);
    margin-bottom: 1rem;
  }
  .company-table {
    width: 100%;
    font-size: 0.85rem;
    border-collapse: collapse;
  }
  .company-table tr { border-bottom: 0.5px solid var(--paper-dark); }
  .company-table tr:last-child { border-bottom: none; }
  .company-table td {
    padding: 0.7rem 0;
    color: var(--ink);
  }
  .company-table td:first-child {
    width: 35%;
    color: var(--ink-light);
    font-size: 0.78rem;
    letter-spacing: 0.05em;
  }
  .company-table .serif { font-family: 'Shippori Mincho', serif; }

  /* ── ABOUT BRIEF（トップの会社について要約。詳細は /about） ── */
  .about-brief {
    background: var(--paper);
  }
  .about-brief-lead {
    font-family: 'Shippori Mincho', serif;
    font-size: clamp(1rem, 2.4vw, 1.15rem);
    line-height: 2.1;
    letter-spacing: 0.04em;
    color: var(--ink-mid);
    max-width: 40rem;
    text-wrap: pretty;
  }
  .about-brief-lead .em { color: var(--accent); font-weight: 500; }
  .about-brief-link {
    display: inline-block;
    margin-top: 1.8rem;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    color: var(--accent-gold);
    text-decoration: none;
    border-bottom: 1px solid var(--accent-pale);
    padding-bottom: 0.2rem;
    transition: color 0.3s, border-color 0.3s;
  }
  .about-brief-link:hover {
    color: var(--accent);
    border-bottom-color: var(--accent-gold);
  }

  /* ── PROFILE ── */
  .profile {}

  .profile-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 5rem;
    align-items: start;
  }

  .profile-card {
    background: var(--paper-mid);
    border: 0.5px solid var(--paper-dark);
    padding: 2.5rem 2rem;
    text-align: center;
  }

  .avatar {
    width: 90px;
    height: 90px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-family: 'Zen Old Mincho', serif;
    font-size: 1.8rem;
    color: var(--paper);
    letter-spacing: 0.05em;
  }

  .profile-name-ja {
    font-family: 'Zen Old Mincho', serif;
    font-size: 1.3rem;
    letter-spacing: 0.1em;
    color: var(--ink);
    margin-bottom: 0.3rem;
  }

  .profile-name-en {
    font-size: 0.72rem;
    letter-spacing: 0.25em;
    color: var(--ink-light);
    text-transform: uppercase;
    margin-bottom: 0.8rem;
  }

  .profile-role {
    font-size: 0.78rem;
    color: var(--accent-gold);
    letter-spacing: 0.1em;
    padding: 0.3rem 0;
    border-top: 0.5px solid var(--paper-dark);
    border-bottom: 0.5px solid var(--paper-dark);
    margin: 0.8rem 0;
  }

  .profile-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 1.2rem;
  }

  .profile-tag {
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    background: var(--accent-pale);
    color: var(--accent);
    padding: 0.25rem 0.7rem;
  }

  .profile-cert {
    margin-top: 1.5rem;
    padding-top: 1.2rem;
    border-top: 0.5px solid var(--paper-dark);
  }

  .profile-cert-label {
    font-size: 0.68rem;
    letter-spacing: 0.25em;
    color: var(--ink-light);
    margin-bottom: 0.5rem;
  }

  .profile-cert-name {
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    color: var(--ink);
    line-height: 1.7;
  }

  .profile-cert-name a {
    color: var(--accent-gold);
    text-decoration: underline;
    text-underline-offset: 0.2em;
  }

  .profile-cert-issuer {
    display: block;
    font-size: 0.68rem;
    letter-spacing: 0.06em;
    color: var(--ink-light);
    margin-top: 0.2rem;
  }

  .profile-detail {}

  .profile-intro {
    font-family: 'Shippori Mincho', serif;
    font-size: 1.1rem;
    line-height: 2.1;
    color: var(--ink);
    margin-bottom: 2rem;
    letter-spacing: 0.06em;
  }

  .profile-body {
    font-size: 0.9rem;
    color: var(--ink-mid);
    line-height: 2.0;
    margin-bottom: 1.5rem;
  }

  /* ── WORKS ── */
  .works {
    background: var(--paper-mid);
  }

  .works-lead {
    font-family: 'Shippori Mincho', serif;
    font-size: 0.95rem;
    line-height: 2.0;
    color: var(--ink-mid);
    letter-spacing: 0.05em;
    margin-top: -1.5rem;
    margin-bottom: 2.5rem;
  }

  /* 対応領域アコーディオン（縦積み・クリックで開閉） */
  .works-accordion {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .acc-item {
    background: var(--paper);
    border: 0.5px solid var(--paper-dark);
    border-left: 2px solid var(--sakura-mid);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
  }

  .acc-item.open {
    border-left-color: var(--sakura-deep);
    box-shadow: 0 10px 28px rgba(122,58,74,0.09);
  }

  .acc-header {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 1.4rem 1.8rem;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    color: inherit;
    transition: background 0.3s ease;
  }
  .acc-header:hover { background: var(--sakura-pale); }
  .acc-header:focus-visible { outline: 2px solid var(--accent-gold); outline-offset: -3px; }

  .acc-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--sakura-pale);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
  }
  .acc-item.open .acc-icon { background: var(--accent-pale); }

  .acc-heading {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
  }

  .acc-cat {
    font-size: 0.66rem;
    letter-spacing: 0.18em;
    color: var(--accent-gold);
  }

  .acc-title {
    font-family: 'Shippori Mincho', serif;
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--ink);
    letter-spacing: 0.04em;
  }

  .acc-chevron {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-gold);
    transition: transform 0.4s ease;
  }
  .acc-item.open .acc-chevron { transform: rotate(180deg); }

  /* パネル本体：grid-template-rows を 0fr→1fr にしてスムーズに開閉 */
  .acc-panel {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.4s ease;
  }
  .acc-item.open .acc-panel {
    grid-template-rows: 1fr;
  }
  /* 閉じているパネルの中身はタブ順・支援技術から外す。
     overflow:hidden のクリップだけではフォーカス可能要素が残るため
     （パネル内にリンクを置いた際に、見えないままフォーカスが当たっていた）。
     閉じるアニメーションが終わってから隠すよう遅延させる。
     副作用として、閉じたパネルの本文はブラウザのページ内検索に掛からなくなる
     （アコーディオンとして一般的な挙動。意図的にこうしている） */
  .acc-panel-inner {
    overflow: hidden;
    visibility: hidden;
    transition: visibility 0s 0.4s;
  }
  .acc-item.open .acc-panel-inner {
    visibility: visible;
    transition: visibility 0s;
  }
  .acc-panel-content {
    padding: 0 1.8rem 1.8rem 5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .work-desc {
    font-size: 0.86rem;
    color: var(--ink-mid);
    line-height: 1.95;
    letter-spacing: 0.02em;
  }

  .tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .tech-tag {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    padding: 0.2rem 0.6rem;
    border: 0.5px solid var(--paper-dark);
    color: var(--ink-light);
  }

  /* リード文の直後に置く一覧への導線は、間隔を詰める */
  .works-lead-link { margin-top: -0.6rem; }

  /* ── SERVICES（自社サービス） ── */
  .services {
    background: var(--paper);
  }

  .services-lead {
    font-family: 'Shippori Mincho', serif;
    font-size: 0.95rem;
    line-height: 2.0;
    color: var(--ink-mid);
    letter-spacing: 0.05em;
    margin-top: -1.5rem;
    margin-bottom: 2.5rem;
  }

  .service-card {
    display: grid;
    grid-template-columns: minmax(0, 38%) 1fr;
    gap: 2.5rem;
    align-items: center;
    padding: 2.2rem;
    background: var(--paper-mid);
    border: 0.5px solid var(--paper-dark);
    border-left: 2px solid var(--sakura-mid);
    color: inherit;
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-left-color 0.3s ease;
  }
  .service-card:hover,
  .service-card:focus-visible {
    transform: translateY(-3px);
    box-shadow: 0 14px 34px var(--ring);
    border-left-color: var(--accent);
  }

  .service-shot {
    display: block;
    width: 100%;
    height: auto;
    background: var(--paper);
    border: 0.5px solid var(--paper-dark);
  }

  .service-cat {
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    color: var(--accent-gold);
    margin-bottom: 0.5rem;
  }

  .service-title {
    font-family: 'Zen Old Mincho', serif;
    font-size: 1.45rem;
    font-weight: 400;
    letter-spacing: 0.06em;
    line-height: 1.6;
    margin-bottom: 0.9rem;
    text-wrap: balance;
  }

  .service-desc {
    font-size: 0.86rem;
    color: var(--ink-mid);
    line-height: 1.95;
    letter-spacing: 0.02em;
    margin-bottom: 1.2rem;
  }

  .service-more {
    display: inline-block;
    margin-top: 1.2rem;
    font-size: 0.78rem;
    letter-spacing: 0.15em;
    color: var(--accent);
  }
  .service-card:hover .service-more { color: var(--accent-gold); }

  @media (max-width: 860px) {
    .service-card { grid-template-columns: 1fr; gap: 1.5rem; padding: 1.5rem; }
  }

  /* ── VISION ── */
  .vision {
    background: var(--surface-inverse);
    color: var(--inverse-ink);
    position: relative;
    overflow: hidden;
  }

  .vision-bg-rings {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.04;
  }

  .vision .section-label { color: var(--accent-gold); }
  .vision .section-title { color: var(--inverse-ink); }
  .vision .divider { background: var(--accent-gold); }

  .vision-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
  }

  .vision-quote {
    font-family: 'Zen Old Mincho', serif;
    font-size: clamp(1.4rem, 2.5vw, 2rem);
    line-height: 2.0;
    letter-spacing: 0.1em;
    color: var(--inverse-ink);
    margin-bottom: 2.5rem;
  }

  .vision-quote em {
    color: var(--accent-gold);
    font-style: normal;
  }

  .vision-body {
    font-family: 'Shippori Mincho', serif;
    font-size: 0.95rem;
    line-height: 2.2;
    color: rgba(247,244,238,0.75);
    letter-spacing: 0.06em;
  }


  /* ── CONTACT ── */
  .contact {
    background: var(--paper-mid);
    text-align: center;
  }

  .contact .section-inner {
    max-width: 600px;
  }

  .contact .divider {
    margin: 1.5rem auto 2.5rem;
  }

  .contact-body {
    font-family: 'Shippori Mincho', serif;
    font-size: 1rem;
    line-height: 2.2;
    color: var(--ink-mid);
    margin-bottom: 3rem;
    letter-spacing: 0.06em;
  }

  .contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 2.5rem;
    background: var(--accent);
    color: var(--paper);
    text-decoration: none;
    font-size: 0.82rem;
    letter-spacing: 0.2em;
    transition: background 0.3s, transform 0.2s;
  }
  .contact-btn:hover { background: var(--ink); transform: translateY(-2px); }

  /* メーラー不調時の補助文言とコピーボタン */
  .contact-note {
    margin-top: 1.2rem;
    font-size: 0.78rem;
    color: var(--ink-light);
    font-family: 'Shippori Mincho', serif;
    letter-spacing: 0.08em;
  }
  .copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--accent-gold);
    font-size: 0.78rem;
    font-family: 'Shippori Mincho', serif;
    letter-spacing: 0.08em;
    text-decoration: underline;
    padding: 0;
  }

  /* ── SUBPAGE（会社案内・事業ページ共通の器） ── */
  .page-head {
    padding: 9rem clamp(1.5rem, 6vw, 5rem) 0;
    max-width: 1200px;
    margin: 0 auto;
  }
  .crumbs {
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    color: var(--ink-light);
    margin-bottom: 1.6rem;
  }
  .crumbs a { color: var(--ink-light); text-decoration: none; border-bottom: 0.5px solid var(--paper-dark); }
  .crumbs a:hover { color: var(--accent); }

  /* ── BUSINESS（事業ページ） ── */
  /* パンくず（.page-head）が上の余白を持つので、本文側の上余白は詰める */
  .biz-body { padding-top: 1.5rem; }
  .biz-lead {
    font-family: 'Shippori Mincho', serif;
    font-size: clamp(1rem, 2.4vw, 1.18rem);
    line-height: 2.1;
    letter-spacing: 0.04em;
    color: var(--ink-mid);
    max-width: 42rem;
    text-wrap: pretty;
  }
  .biz-section { margin-top: 4.5rem; }
  .biz-section h2 {
    font-family: 'Zen Old Mincho', serif;
    font-weight: 400;
    font-size: 1.3rem;
    letter-spacing: 0.08em;
    padding-bottom: 0.7rem;
    border-bottom: 0.5px solid var(--paper-dark);
    margin-bottom: 1.6rem;
  }
  .biz-list { list-style: none; display: flex; flex-direction: column; gap: 0.9rem; }
  .biz-list li {
    position: relative;
    padding-left: 1.5rem;
    font-size: 0.9rem;
    line-height: 1.95;
    color: var(--ink-mid);
  }
  .biz-list li::before {
    content: "";
    position: absolute;
    left: 0.3rem;
    top: 0.85em;
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--accent-gold);
  }
  /* 進め方は順序に意味があるので番号を振る */
  .biz-steps { list-style: none; counter-reset: step; }
  .biz-step {
    counter-increment: step;
    position: relative;
    padding: 0 0 2rem 3.2rem;
    border-left: 0.5px solid var(--paper-dark);
    margin-left: 0.95rem;
  }
  .biz-step:last-child { border-left-color: transparent; padding-bottom: 0; }
  .biz-step::before {
    content: counter(step);
    position: absolute;
    left: -0.95rem; top: 0;
    width: 1.9rem; height: 1.9rem;
    border-radius: 50%;
    background: var(--paper);
    border: 0.5px solid var(--accent-gold);
    color: var(--accent-gold);
    font-family: 'Shippori Mincho', serif;
    font-size: 0.82rem;
    display: flex; align-items: center; justify-content: center;
    font-variant-numeric: tabular-nums;
  }
  .biz-step h3 {
    font-family: 'Shippori Mincho', serif;
    font-weight: 500;
    font-size: 1rem;
    letter-spacing: 0.05em;
    margin-bottom: 0.4rem;
    padding-top: 0.2rem;
  }
  .biz-step p { font-size: 0.88rem; color: var(--ink-mid); line-height: 1.95; }
  .biz-note {
    margin-top: 1.5rem;
    padding: 1rem 1.2rem;
    border-left: 2px solid var(--sakura-mid);
    background: var(--paper-mid);
    font-size: 0.83rem;
    color: var(--ink-mid);
    line-height: 1.9;
  }
  .biz-cta {
    margin-top: 4.5rem;
    padding-top: 2.2rem;
    border-top: 0.5px solid var(--paper-dark);
  }
  .biz-cta p { font-size: 0.9rem; color: var(--ink-mid); line-height: 1.95; margin-bottom: 1.2rem; }
  /* 事業一覧のカード */
  .biz-cards { display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); }
  .biz-card {
    display: block;
    padding: 1.6rem 1.7rem;
    border: 0.5px solid var(--paper-dark);
    background: var(--paper);
    text-decoration: none;
    transition: border-color 0.3s, transform 0.3s;
  }
  .biz-card:hover { border-color: var(--accent-gold); transform: translateY(-2px); }
  .biz-card:focus-visible { outline: 2px solid var(--accent-gold); outline-offset: 2px; }
  .biz-card-cat {
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: var(--accent-gold);
    margin-bottom: 0.5rem;
  }
  .biz-card-title {
    font-family: 'Shippori Mincho', serif;
    font-weight: 500;
    font-size: 1.02rem;
    letter-spacing: 0.04em;
    color: var(--ink);
    line-height: 1.7;
    margin-bottom: 0.7rem;
  }
  .biz-card-desc { font-size: 0.84rem; color: var(--ink-mid); line-height: 1.9; }
  .biz-card-more {
    display: inline-block;
    margin-top: 0.9rem;
    font-size: 0.8rem;
    letter-spacing: 0.06em;
    color: var(--accent-gold);
  }

  /* ── FOOTER ── */
  footer {
    background: var(--surface-inverse);
    color: rgba(247,244,238,0.5);
    padding: 3rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
  }

  .footer-logo {
    text-decoration: none;
    font-family: 'Zen Old Mincho', serif;
    font-size: 1.1rem;
    letter-spacing: 0.2em;
    color: var(--inverse-ink);
  }

  .footer-copy {
    font-size: 0.72rem;
    letter-spacing: 0.1em;
  }

  .footer-link {
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    color: rgba(247,244,238,0.7);
    text-decoration: none;
    transition: color 0.3s;
  }
  .footer-link:hover { color: var(--inverse-ink); }

  /* ── ANIMATIONS ── */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  @keyframes rotateRing {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
  }

  @keyframes rotateRingRev {
    from { transform: rotate(0deg); }
    to   { transform: rotate(-360deg); }
  }

  @keyframes petalFall {
    0%   { transform: translateY(-60px) rotate(0deg); opacity: 0; }
    10%  { opacity: 0.7; }
    90%  { opacity: 0.4; }
    100% { transform: translateY(110vh) rotate(720deg); opacity: 0; }
  }

  @keyframes petalSway {
    0%,100% { margin-left: 0; }
    25%     { margin-left: 40px; }
    75%     { margin-left: -30px; }
  }

  .fade-up {
    opacity: 0;
    animation: fadeUp 0.9s ease forwards;
  }

  .fade-up:nth-child(1) { animation-delay: 0.1s; }
  .fade-up:nth-child(2) { animation-delay: 0.3s; }
  .fade-up:nth-child(3) { animation-delay: 0.5s; }
  .fade-up:nth-child(4) { animation-delay: 0.7s; }

  .ring-anim-1 {
    transform-origin: center;
    animation: rotateRing 40s linear infinite;
  }
  .ring-anim-2 {
    transform-origin: center;
    animation: rotateRingRev 60s linear infinite;
  }
  .ring-anim-3 {
    transform-origin: center;
    animation: rotateRing 25s linear infinite;
  }

  /* カーソル追従スポットライト（カードの質感を高めるマイクロインタラクション） */
  .spot { position: relative; }
  .spot::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(200px circle at var(--mx, 50%) var(--my, 50%), var(--spot), transparent 70%);
    opacity: 0;
    transition: opacity 0.35s ease;
  }
  .spot:hover::after { opacity: 1; }

  /* 進捗リング付き「トップへ戻る」ボタン */
  .to-top {
    position: fixed;
    right: 1.6rem;
    bottom: 1.6rem;
    z-index: 90;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: var(--nav-bg);
    backdrop-filter: blur(8px);
    box-shadow: 0 6px 20px var(--ring);
    color: var(--accent);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
    transition: opacity 0.4s ease, transform 0.4s ease;
  }
  .to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .to-top .to-top-ring {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
  }
  .to-top .tt-track,
  .to-top .tt-bar {
    fill: none;
    stroke-width: 1.5;
    cx: 24px; cy: 24px; r: 21px;
  }
  .to-top .tt-track { stroke: var(--paper-dark); }
  .to-top .tt-bar {
    stroke: var(--accent-gold);
    stroke-linecap: round;
    stroke-dasharray: 1;
    stroke-dashoffset: var(--p, 1);
    transform: rotate(-90deg);
    transform-origin: center;
  }
  .to-top .to-top-arrow { width: 14px; height: 14px; }

  /* 区切り線をスクロール到達時に描画 */
  .js .reveal .divider {
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.25s;
  }
  .js .reveal.is-visible .divider { transform: scaleX(1); }

  /* スクロール表示演出（JS有効時のみ隠す＝JS無効でも表示される） */
  .js .reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.8s ease, transform 0.8s ease;
    will-change: opacity, transform;
  }
  .js .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* ── PAIN POINTS ── */
  .pain {
    background: var(--paper);
  }

  .pain-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
  }

  .pain-item {
    background: var(--paper-mid);
    border: 0.5px solid var(--paper-dark);
    border-left: 2px solid var(--sakura-mid);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .pain-icon {
    display: flex;
    align-items: center;
  }

  .pain-text {
    font-family: 'Shippori Mincho', serif;
    font-size: 0.92rem;
    line-height: 1.9;
    color: var(--ink-mid);
    letter-spacing: 0.04em;
  }

  .pain-text strong {
    color: var(--ink);
    font-weight: 600;
  }

  .pain-resolve {
    font-size: 0.82rem;
    line-height: 1.9;
    color: var(--ink-light);
    letter-spacing: 0.03em;
    padding-top: 0.9rem;
    margin-top: auto;
    border-top: 0.5px solid var(--paper-dark);
  }

  .pain-resolve::before {
    content: "→ ";
    color: var(--accent-gold);
  }

  .pain-answer {
    text-align: center;
    padding: 2rem;
    background: var(--accent);
  }

  .pain-answer p {
    font-family: 'Zen Old Mincho', serif;
    font-size: 1.1rem;
    letter-spacing: 0.12em;
    color: var(--paper);
  }

  .work-value {
    display: block;
    padding-top: 0.9rem;
    border-top: 0.5px solid var(--paper-dark);
    font-family: 'Shippori Mincho', serif;
    font-size: 0.82rem;
    line-height: 1.85;
    color: var(--accent-gold);
    letter-spacing: 0.05em;
    font-style: italic;
  }

  /* 対応領域から自社サービスセクションへの導線。
     親が flex column のため、align-self を指定しないと全幅に伸びて
     下線とクリック領域がパネル幅いっぱいになる */
  .work-link {
    display: inline-block;
    align-self: flex-start;
    font-size: 0.82rem;
    letter-spacing: 0.05em;
    color: var(--accent-gold);
    text-decoration: none;
    border-bottom: 1px solid var(--accent-pale);
    padding-bottom: 0.15rem;
    transition: color 0.3s, border-color 0.3s;
  }
  .work-link:hover {
    color: var(--accent);
    border-bottom-color: var(--accent-gold);
  }

  /* ── STRENGTHS（選ばれる理由） ── */
  .strengths {
    background: var(--paper-mid);
  }

  .strengths-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .strength-item {
    background: var(--paper);
    border: 0.5px solid var(--paper-dark);
    border-top: 2px solid var(--accent-gold);
    padding: 2.2rem 1.7rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  }

  .strength-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 32px rgba(122,58,74,0.12);
    border-color: var(--accent);
  }

  .strength-head {
    display: flex;
    align-items: center;
    gap: 1rem;
  }

  .strength-icon {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: var(--accent-pale);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .strength-num {
    font-family: 'Zen Old Mincho', serif;
    font-size: 1.7rem;
    line-height: 1;
    color: var(--accent-gold);
    letter-spacing: 0.05em;
  }

  .strength-title {
    font-family: 'Shippori Mincho', serif;
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--ink);
    letter-spacing: 0.04em;
  }

  .strength-desc {
    font-size: 0.88rem;
    line-height: 1.95;
    color: var(--ink-mid);
    letter-spacing: 0.02em;
  }

  /* ── SAKURA PETALS ── */
  .sakura-layer {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1000;
    overflow: hidden;
  }

  .petal {
    position: absolute;
    top: -60px;
    animation: petalFall linear infinite, petalSway ease-in-out infinite;
  }

  /* 桜の区切り装飾 */
  .sakura-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0 2.5rem;
  }

  .sakura-divider-line {
    width: 40px;
    height: 1px;
    background: var(--sakura-mid);
  }

  .sakura-divider svg {
    flex-shrink: 0;
  }

  /* ── SCROLL-DRIVEN UX（スクロール連動演出） ── */
  /* 上部スクロール進捗バー */
  .scroll-progress {
    position: fixed;
    top: 0; left: 0;
    height: 3px;
    width: 100%;
    transform: scaleX(0);
    transform-origin: 0 50%;
    background: linear-gradient(90deg, var(--sakura-mid), var(--accent-gold), var(--accent));
    z-index: 200;
    pointer-events: none;
  }

  @supports (animation-timeline: scroll()) {
    .scroll-progress {
      animation: progressGrow linear both;
      animation-timeline: scroll(root);
    }
  }

  @keyframes progressGrow {
    from { transform: scaleX(0); }
    to   { transform: scaleX(1); }
  }

  /* カードのスクロール連動リフレッシュ表示（ラッパーに適用しホバーと衝突させない） */
  .reveal-item { display: flex; }
  .reveal-item > * { flex: 1 1 auto; width: 100%; }

  @keyframes cardScrollIn {
    from { opacity: 0; transform: translateY(46px) scale(0.965); }
    to   { opacity: 1; transform: translateY(0)    scale(1); }
  }

  @supports (animation-timeline: view()) {
    @media (prefers-reduced-motion: no-preference) {
      .reveal-item {
        animation: cardScrollIn linear both;
        animation-timeline: view();
        animation-range: entry 4% cover 34%;
        will-change: opacity, transform;
      }
    }
  }

  /* ── HERO：縁が集い環を成す演出（全画面・ピン留めスクロール連動） ── */
  /* 中心＝画面中央。花びら（＝人）が四方から集まり、環を成す */
  .converge {
    position: absolute;
    left: 50%;
    top: 50%;
    pointer-events: none;
    --cv-r: 34vmin;   /* 集結する環の半径（画面サイズに追従） */
  }

  /* 花びら：既定＝環に集結した最終形（フォールバック） */
  .cv-petal {
    width: 30px;
    height: 30px;
    margin: -15px 0 0 -15px;
    opacity: 0.95;
    transform: rotate(var(--angle)) translateY(calc(-1 * var(--cv-r))) scale(1);
    z-index: 1;
  }
  .cv-petal svg { width: 100%; height: 100%; display: block; }

  /* 中心のやわらかな輝き（価値が生まれる）：既定＝点灯 */
  .converge-core {
    width: 52vmin;
    height: 52vmin;
    margin: -26vmin 0 0 -26vmin;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(224,140,150,0.40) 0%, rgba(224,140,150,0.12) 40%, rgba(224,140,150,0) 68%);
    opacity: 1;
    transform: scale(1.05);
    z-index: 0;
  }

  /* 描かれる環の線：既定＝描画済み。ビューポート最小辺に追従（viewBox 100×100） */
  .converge-ring {
    width: 68vmin;
    height: 68vmin;
    margin: -34vmin 0 0 -34vmin;
    z-index: 1;
  }
  .converge-ring circle {
    fill: none;
    stroke: var(--sakura-deep);
    stroke-width: 0.4;
    stroke-dasharray: 1;
    stroke-dashoffset: 0;
    transform: rotate(-90deg);
    transform-origin: 50px 50px;
  }

  @keyframes petalConverge {
    from { opacity: 0; transform: translate(var(--sx), var(--sy)) rotate(var(--sr)) scale(0.45); }
    42%  { opacity: 0.95; }
    to   { opacity: 0.95; transform: rotate(var(--angle)) translateY(calc(-1 * var(--cv-r))) scale(1); }
  }
  @keyframes coreGlow {
    from { opacity: 0; transform: scale(0.4); }
    to   { opacity: 1; transform: scale(1.05); }
  }
  @keyframes ringDraw {
    from { stroke-dashoffset: 1; }
    to   { stroke-dashoffset: 0; }
  }

  /* 対応ブラウザ＋動きOK時のみ：Heroを縦長化してピン留めし、散在→集結を再生 */
  @supports (animation-timeline: scroll()) {
    @media (prefers-reduced-motion: no-preference) {
      .hero { height: 220vh; }
      .hero-stage {
        position: sticky;
        top: 0;
      }
      .cv-petal {
        opacity: 0;
        transform: translate(var(--sx), var(--sy)) rotate(var(--sr)) scale(0.45);
        animation: petalConverge linear both;
        animation-timeline: scroll(root);
        animation-range: 0 112vh;
        will-change: opacity, transform;
      }
      .converge-core {
        opacity: 0;
        animation: coreGlow linear both;
        animation-timeline: scroll(root);
        animation-range: 56vh 122vh;
      }
      .converge-ring circle {
        stroke-dashoffset: 1;
        animation: ringDraw linear both;
        animation-timeline: scroll(root);
        animation-range: 8vh 104vh;
      }
      .hero-scroll-hint {
        animation: hintFade linear both;
        animation-timeline: scroll(root);
        animation-range: 0 18vh;
      }
    }
  }

  @keyframes hintFade {
    from { opacity: 0.85; transform: translate(-50%, 0); }
    to   { opacity: 0; transform: translate(-50%, 10px); }
  }

  /* ── RESPONSIVE ── */
  /* ナビはリンク数が多いため、横並びが窮屈になる 1200px 以下でハンバーガーへ切り替える
     （レイアウト本体の折り返しは従来どおり 900px） */
  @media (max-width: 1200px) {
    /* モバイルナビ（ハンバーガー） */
    .nav-toggle { display: flex; }
    .nav-links {
      position: fixed;
      top: 0;
      right: 0;
      height: 100vh;
      width: min(75vw, 280px);
      flex-direction: column;
      justify-content: center;
      gap: 2rem;
      padding: 2rem 2.5rem;
      background: var(--nav-menu-bg);
      backdrop-filter: blur(10px);
      border-left: 0.5px solid var(--paper-dark);
      transform: translateX(100%);
      transition: transform 0.35s ease;
      box-shadow: -8px 0 24px rgba(26,26,24,0.06);
    }
    nav.nav-open .nav-links { transform: translateX(0); }
    .nav-links a { font-size: 0.95rem; }
    .nav-links { z-index: 108; }

    /* メニュー展開時に背景を暗くするスクリム */
    .nav-scrim {
      display: block;
      position: fixed;
      inset: 0;
      z-index: 105;
      background: rgba(15,10,14,0.35);
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.35s ease;
    }
    nav.nav-open .nav-scrim {
      opacity: 1;
      pointer-events: auto;
    }
  }

  /* 横並びナビの最狭域（1201〜1500px）は余白を詰めて収める */
  @media (min-width: 1201px) and (max-width: 1500px) {
    nav { gap: 1.2rem; padding-left: 1.5rem; padding-right: 1.5rem; }
    .nav-links { gap: 1.2rem; }
  }

  @media (max-width: 900px) {
    nav { padding: 1rem 1.5rem; }
    section { padding: 5rem 1.5rem; }
    .hero-stage { padding: 7rem 1.5rem 4rem; }
    /* スマホでは中央ロゴ（不透明）を隠し、環・花びら・輝きを背景に文字を前面へ */
    .hero-logo { display: none; }
    .converge { --cv-r: 33vmin; }
    .converge-ring circle { stroke: var(--sakura-mid); }
    .converge-core { background: radial-gradient(circle, rgba(224,140,150,0.28) 0%, rgba(224,140,150,0.08) 42%, rgba(224,140,150,0) 70%); }
    .hero-text { max-width: 100%; }
    .pain-grid { grid-template-columns: 1fr; }
    .strengths-grid { grid-template-columns: 1fr; }
    .acc-header { padding: 1.2rem 1.2rem; gap: 0.9rem; }
    .acc-panel-content { padding: 0 1.2rem 1.5rem 1.2rem; }
    .about-grid { grid-template-columns: 1fr; gap: 3rem; }
    .profile-grid { grid-template-columns: 1fr; gap: 2rem; }
    .partner-box { grid-template-columns: 1fr; gap: 2rem; }
    footer { flex-direction: column; align-items: flex-start; padding: 2rem 1.5rem; }

    .to-top { right: 1.1rem; bottom: 1.1rem; width: 44px; height: 44px; }
    .to-top .tt-track, .to-top .tt-bar { cx: 22px; cy: 22px; r: 19px; }
  }

  /* スマホ幅：社名由来の「八＋重＋環」を縦並びに整える */
  @media (max-width: 600px) {
    .kanji-breakdown {
      flex-direction: column;
      align-items: center;
      gap: 0.6rem;
    }
    .kanji-sep {
      align-self: center;
      line-height: 1;
    }
  }

  /* 動きを抑えたいユーザーへの配慮 */
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 0.001ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.001ms !important;
      scroll-behavior: auto !important;
    }
    /* 閉じたパネルを隠す遅延も外す（duration の上書きだけでは delay が残るため） */
    .acc-panel-inner { transition-delay: 0s !important; }
    .reveal { opacity: 1 !important; transform: none !important; }
    .reveal-item { animation: none !important; }
    .reveal-item > * { opacity: 1 !important; transform: none !important; }
    .reveal .divider { transform: none !important; }
    .ht-inner { transform: none !important; animation: none !important; }
    #sakura-layer { display: none; }
    .scroll-progress { display: none; }
    .spot::after { display: none; }
    /* Hero演出：動きを抑える設定では、環が組み上がった最終形を静的表示（既定状態のまま） */
  }