* { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }

  :root {
    --bg: #ffffff;
    --ink: #1a1a1a;
    --ink-light: #555;
    --line: #e8e6e2;
    --accent: #c93828;
    --neutral-50: #fafafa;
  }

  body {
    font-family: "Helvetica Neue", "Helvetica", "Arial",
                 "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.7;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }

  .mincho {
    font-family: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", serif;
    font-weight: 400;
  }

  a { color: inherit; text-decoration: none; }

  /* ===== Header ===== */
  header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    transition: padding 0.3s;
  }
  .header-inner {
    max-width: 1400px; margin: 0 auto;
    padding: 24px 48px;
    display: flex; justify-content: space-between; align-items: center;
  }
  .logo {
    display: flex; align-items: flex-end; gap: 14px;
  }
  .logo a { display: flex; align-items: flex-end; }
  .logo-img {
    height: 40px; width: auto; display: block;
  }
  .logo-mark {
    font-family: "Yu Mincho", serif;
    font-size: 22px; letter-spacing: 0.18em;
    font-weight: 400;
  }
  .logo-sub {
    font-size: 10px; letter-spacing: 0.32em;
    color: var(--ink-light);
    line-height: 1;
    padding-bottom: 2px; /* ロゴ画像のbaselineに微調整 */
  }
  nav ul {
    list-style: none; display: flex; gap: 40px;
  }
  nav a {
    font-size: 12px; letter-spacing: 0.25em;
    transition: color 0.2s;
    position: relative;
  }
  nav a::after {
    content: ''; position: absolute;
    bottom: -6px; left: 0; right: 0; height: 1px;
    background: var(--accent);
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.3s;
  }
  nav a:hover::after { transform: scaleX(1); }

  /* ハンバーガーボタン（デスクトップでは非表示） */
  .nav-toggle { display: none; }

  /* 注記用の青文字 */
  .note-blue { color: #1a5fa8; }

  /* ===== Hero ===== */
  .hero {
    min-height: 100vh;
    position: relative; overflow: hidden;
    display: flex; align-items: center;
  }
  .hero-bg {
    position: absolute; inset: 0; z-index: 0;
    background-image: url('hero-bg.jpg');
    background-size: cover;
    background-position: center;
  }
  /* 上端を濃く、 下端は少し明るく */
  .hero-bg::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg,
      rgba(20, 60, 110, 0.55) 0%,
      rgba(20, 60, 110, 0.15) 35%,
      rgba(20, 60, 110, 0) 60%);
  }
  .hero-bg::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0) 70%, rgba(255,255,255,0.18) 100%);
  }
  .hero-content {
    position: relative; z-index: 2;
    max-width: 1400px; width: 100%;
    margin: 0 auto; padding: 0 48px;
  }
  .hero-tag {
    font-size: 11px; letter-spacing: 0.4em;
    color: rgba(255,255,255,0.95); margin-bottom: 36px;
    display: flex; align-items: center; gap: 14px;
    text-shadow: 0 1px 12px rgba(0,40,80,0.35);
  }
  .hero-tag::before {
    content: ''; width: 40px; height: 1px; background: rgba(255,255,255,0.85);
  }
  .hero h1 {
    font-family: "Yu Mincho", serif;
    font-size: clamp(20px, 2.6vw, 34px);
    line-height: 1.5; letter-spacing: 0.1em;
    font-weight: 400; margin-bottom: 40px;
    max-width: 920px;
    color: #fff;
    text-shadow: 0 2px 20px rgba(0,40,80,0.4);
    white-space: nowrap; /* 1行強制 */
  }
  .hero h1 em {
    font-style: normal;
    color: #fff;
    font-weight: 500; /* 「本当に必要なかたち」 をウェイト差で識別 */
  }
  .hero-sub {
    font-size: 13px; line-height: 2.1; letter-spacing: 0.12em;
    color: rgba(255,255,255,0.92);
    max-width: 540px;
    text-shadow: 0 1px 10px rgba(0,40,80,0.35);
  }
  /* Hero下の「スクロール促進」 マーク — 縦に5つのドット、 光が上から下へ流れる */
  .hero-scroll {
    position: absolute;
    bottom: 46px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 5px;
    align-items: center;
  }
  .hero-scroll span {
    width: 4px; height: 4px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    animation: dotFlow 1.8s ease-in-out infinite;
  }
  .hero-scroll span:nth-child(1) { animation-delay: 0s; }
  .hero-scroll span:nth-child(2) { animation-delay: 0.18s; }
  .hero-scroll span:nth-child(3) { animation-delay: 0.36s; }
  .hero-scroll span:nth-child(4) { animation-delay: 0.54s; }
  .hero-scroll span:nth-child(5) { animation-delay: 0.72s; }
  @keyframes dotFlow {
    0%, 70%, 100% { background: rgba(255,255,255,0.25); transform: scale(1); }
    35% { background: rgba(255,255,255,0.95); transform: scale(1.25); }
  }

  /* ===== About ===== */
  .about {
    padding: 140px 48px;
    max-width: 1400px; margin: 0 auto;
  }
  .about-inner {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 100px; align-items: center;
  }
  /* ===== 60周年セレブレート版 ===== */
  .about-visual {
    aspect-ratio: 4 / 5;
    position: relative;
    border: 1px solid var(--accent);
    display: flex; flex-direction: column;
    justify-content: center; align-items: center;
    padding: 50px 30px;
    background: linear-gradient(180deg, #fff 0%, #fafafa 100%);
    overflow: hidden;
  }
  /* コーナー装飾 */
  .about-visual::before,
  .about-visual::after {
    content: ''; position: absolute;
    width: 30px; height: 30px;
    border: 1px solid var(--accent);
  }
  .about-visual::before {
    top: 12px; left: 12px;
    border-right: none; border-bottom: none;
  }
  .about-visual::after {
    bottom: 12px; right: 12px;
    border-left: none; border-top: none;
  }
  .anniv-tag {
    font-size: 11px; letter-spacing: 0.5em;
    color: var(--accent);
    border-top: 1px solid var(--accent);
    border-bottom: 1px solid var(--accent);
    padding: 10px 18px;
    margin-bottom: 36px;
    text-indent: 0.5em; /* letter-spacingの末尾調整 */
  }
  .anniv-num {
    font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
    font-size: clamp(140px, 22vw, 280px);
    line-height: 0.85;
    color: var(--accent);
    font-weight: 400;
    letter-spacing: -0.02em;
    text-align: center;
  }
  .anniv-th {
    font-family: "Yu Mincho", serif;
    font-size: 20px; letter-spacing: 0.15em;
    color: var(--accent);
    margin-top: 4px;
  }
  .anniv-label {
    font-family: "Helvetica Neue", sans-serif;
    font-size: 11px; letter-spacing: 0.5em;
    color: var(--ink);
    margin-top: 24px;
    text-indent: 0.5em;
  }
  .anniv-divider {
    width: 40px; height: 1px;
    background: var(--ink-light);
    margin: 28px 0 24px;
  }
  .anniv-years {
    font-family: "Yu Mincho", serif;
    font-size: clamp(15px, 1.5vw, 18px);
    letter-spacing: 0.35em;
    color: var(--ink);
    text-indent: 0.35em;
  }
  .anniv-place {
    font-size: 10px; letter-spacing: 0.45em;
    color: var(--ink-light);
    margin-top: 14px;
    text-indent: 0.45em;
  }
  .about-text {
    padding-right: 40px;
  }
  .section-tag {
    font-size: 11px; letter-spacing: 0.4em;
    color: var(--accent); margin-bottom: 28px;
    display: flex; align-items: center; gap: 14px;
  }
  .section-tag::before {
    content: ''; width: 30px; height: 1px; background: var(--accent);
  }
  .about-text h2 {
    font-family: "Yu Mincho", serif;
    font-size: clamp(28px, 3.5vw, 40px);
    line-height: 1.55; letter-spacing: 0.08em;
    margin-bottom: 36px; font-weight: 400;
  }
  .about-text p {
    font-size: 14.5px; line-height: 2.1;
    letter-spacing: 0.06em; margin-bottom: 20px;
    color: var(--ink);
  }
  .about-year-strip {
    display: flex; align-items: baseline; gap: 24px;
    margin-top: 48px; padding-top: 32px;
    border-top: 1px solid var(--line);
  }
  .about-year-strip .num {
    font-family: "Yu Mincho", serif;
    font-size: 56px; line-height: 1;
    color: var(--accent); font-weight: 400;
  }
  .about-year-strip .label {
    font-size: 11px; letter-spacing: 0.3em;
    color: var(--ink-light); line-height: 1.8;
  }

  /* ===== Services ===== */
  .services {
    background: var(--neutral-50);
    padding: 140px 48px;
  }
  .services-inner {
    max-width: 1400px; margin: 0 auto;
  }
  .services-header {
    display: flex; justify-content: space-between; align-items: flex-end;
    margin-bottom: 80px;
  }
  .services-header h2 {
    font-family: "Yu Mincho", serif;
    font-size: clamp(28px, 3.5vw, 40px);
    letter-spacing: 0.08em; font-weight: 400;
  }
  .services-header .lead {
    font-size: 13px; line-height: 1.9;
    color: var(--ink-light); max-width: 420px;
    text-align: right;
  }
  .service-row {
    display: grid; grid-template-columns: 80px 1fr 1fr;
    gap: 60px; padding: 60px 0;
    border-top: 1px solid var(--line);
    align-items: start;
    cursor: pointer;
    transition: padding-left 0.4s;
  }
  .service-row:last-child { border-bottom: 1px solid var(--line); }
  .service-row:hover { padding-left: 16px; }
  .service-num {
    font-family: "Helvetica Neue", sans-serif;
    font-size: 14px; letter-spacing: 0.2em;
    color: var(--accent); font-weight: 500;
    padding-top: 8px;
  }
  .service-info h3 {
    font-family: "Yu Mincho", serif;
    font-size: 32px; letter-spacing: 0.12em;
    margin-bottom: 8px; font-weight: 400;
  }
  .service-info .en {
    font-size: 11px; letter-spacing: 0.35em;
    color: var(--ink-light); margin-bottom: 24px;
  }
  .service-info .desc {
    font-size: 14px; line-height: 1.95;
    letter-spacing: 0.05em;
    color: var(--ink);
  }
  .service-image {
    aspect-ratio: 4 / 3;
    position: relative;
    overflow: hidden;
    background: #e8e8e8;
  }
  .service-image img {
    width: 100%; height: 100%; object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
  }
  .service-row:hover .service-image img {
    transform: scale(1.04);
  }

  /* ===== Philosophy quote ===== */
  .quote-section {
    padding: 160px 48px;
    text-align: center;
  }
  .quote-section blockquote {
    font-family: "Yu Mincho", serif;
    font-size: clamp(20px, 2.5vw, 28px);
    line-height: 2.2; letter-spacing: 0.15em;
    max-width: 900px; margin: 0 auto;
    font-weight: 400;
  }
  .quote-section blockquote::before {
    content: '"'; display: block;
    font-size: 80px; line-height: 0.5;
    color: var(--accent);
    margin-bottom: 30px;
  }
  .quote-source {
    font-size: 11px; letter-spacing: 0.3em;
    color: var(--ink-light);
    margin-top: 40px;
  }

  /* ===== News ===== */
  .news {
    padding: 140px 48px;
    background: var(--neutral-50);
  }
  .news-inner { max-width: 1100px; margin: 0 auto; }
  .news-header {
    display: flex; justify-content: space-between; align-items: baseline;
    margin-bottom: 60px;
  }
  .news-header h2 {
    font-family: "Yu Mincho", serif;
    font-size: clamp(28px, 3.5vw, 40px);
    letter-spacing: 0.08em; font-weight: 400;
  }
  .news-header a {
    font-size: 11px; letter-spacing: 0.3em;
    color: var(--accent);
    border-bottom: 1px solid var(--accent);
    padding-bottom: 4px;
  }
  .news-list { list-style: none; }
  .news-list li {
    display: grid; grid-template-columns: 140px 100px 1fr;
    gap: 30px; padding: 28px 0;
    border-top: 1px solid var(--line);
    align-items: center;
    transition: padding-left 0.3s;
    cursor: pointer;
  }
  .news-list li:hover { padding-left: 16px; }
  .news-list li:last-child { border-bottom: 1px solid var(--line); }
  .news-date {
    font-family: "Helvetica Neue", sans-serif;
    font-size: 12px; letter-spacing: 0.15em;
    color: var(--ink-light);
  }
  .news-cat {
    font-size: 10px; letter-spacing: 0.25em;
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 4px 10px;
    text-align: center;
    text-transform: uppercase;
  }
  .news-title {
    font-size: 14px; letter-spacing: 0.05em;
  }

  /* ===== Contact ===== */
  .contact {
    padding: 160px 48px;
    text-align: center;
  }
  .contact h2 {
    font-family: "Yu Mincho", serif;
    font-size: clamp(16px, 1.8vw, 22px);
    letter-spacing: 0.3em; line-height: 1.6;
    margin-bottom: 24px; font-weight: 400;
  }
  .contact p {
    font-size: 12.5px; line-height: 2;
    letter-spacing: 0.08em;
    color: var(--ink-light); margin-bottom: 40px;
  }
  .contact-btn {
    display: inline-block;
    padding: 22px 64px;
    background: var(--ink); color: #fff;
    font-size: 12px; letter-spacing: 0.4em;
    transition: background 0.2s;
  }
  .contact-btn:hover { background: var(--accent); }

  /* ===== Footer ===== */
  footer {
    background: var(--ink);
    color: rgba(255,255,255,0.6);
    padding: 80px 48px 40px;
  }
  .footer-inner {
    max-width: 1400px; margin: 0 auto;
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px; padding-bottom: 50px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  .footer-logo {
    font-family: "Yu Mincho", serif;
    font-size: 22px; letter-spacing: 0.18em;
    color: #fff; margin-bottom: 14px;
  }
  .footer-logo-img {
    /* 縦組（スクエア） ロゴ */
    height: 96px; width: auto; display: block;
    /* 黒ロゴを白抜きに反転 */
    filter: brightness(0) invert(1);
    opacity: 0.92;
    margin-bottom: 18px;
  }
  .footer-logo-sub {
    font-size: 10px; letter-spacing: 0.32em;
    color: rgba(255,255,255,0.5);
    margin-bottom: 20px;
  }
  .footer-desc {
    font-size: 12px; line-height: 1.9;
  }
  .footer-block h4 {
    font-family: "Helvetica Neue", sans-serif;
    font-size: 11px; letter-spacing: 0.3em;
    color: var(--accent);
    margin-bottom: 18px;
  }
  .footer-block p, .footer-block a {
    font-size: 12px; line-height: 2;
    color: rgba(255,255,255,0.7);
    display: block;
  }
  .footer-copy {
    text-align: center; margin-top: 40px;
    font-size: 10px; letter-spacing: 0.3em;
    color: rgba(255,255,255,0.4);
  }

  /* ===== 下層ページ共通 ===== */
  .page-hero {
    padding: 180px 48px 100px;
    /* 高さを固定 → タイトルのサイズを変えても装飾数字（deco-anniv）の縦中央位置がブレない */
    min-height: 460px;
    box-sizing: border-box;
    background: linear-gradient(180deg, #fafafa 0%, #fff 100%);
    border-bottom: 1px solid var(--line);
    position: relative;
    overflow: hidden;
  }
  .page-hero-inner {
    max-width: 1400px; margin: 0 auto;
    position: relative; z-index: 2;
  }
  .page-hero .breadcrumb {
    font-size: 11px; letter-spacing: 0.3em;
    color: var(--ink-light);
    margin-bottom: 24px;
  }
  .page-hero .breadcrumb a { color: var(--ink-light); }
  .page-hero .breadcrumb a:hover { color: var(--accent); }
  .page-hero .breadcrumb span { color: var(--ink); }
  .page-hero h1 {
    font-family: "Yu Mincho", serif;
    /* section-head h2「わたしたちの想い」 と同サイズに */
    font-size: clamp(24px, 3vw, 34px);
    line-height: 1.4; letter-spacing: 0.12em;
    font-weight: 400;
    color: var(--ink);
    margin-bottom: 12px;
  }
  .page-hero .page-en {
    font-family: "Helvetica Neue", sans-serif;
    font-size: 11px; letter-spacing: 0.5em;
    color: var(--accent);
    text-indent: 0.5em;
  }
  .page-hero .deco-anniv {
    position: absolute;
    right: 100px; top: 50%;
    transform: translateY(-50%);
    text-align: center;
    z-index: 1;
    pointer-events: none;
    user-select: none;
  }
  .page-hero .deco-label {
    font-size: 11px; letter-spacing: 0.5em;
    color: var(--accent);
    opacity: 0.55;
    margin-bottom: 14px;
    /* letter-spacing の最終文字後の余白を吸収して、 60/04 とセンター揃えに */
    margin-right: -0.5em;
    font-family: "Helvetica Neue", sans-serif;
  }
  .page-hero .deco-num {
    font-family: "Yu Mincho", serif;
    font-size: clamp(140px, 18vw, 220px);
    line-height: 0.9; color: var(--line);
    font-weight: 400;
    letter-spacing: -0.02em;
    display: inline-block;
    position: relative;
  }
  /* th は「60」 の右外に absolute で配置。 「60」 単独中央を ANNIVERSARY と揃えるため */
  .page-hero .deco-th {
    position: absolute;
    left: 100%;
    bottom: 0.12em;
    margin-left: 0.08em;
    font-size: 0.18em;
    letter-spacing: 0.05em;
    line-height: 1;
    text-transform: lowercase;
    white-space: nowrap;
  }

  /* ===== セクション共通 ===== */
  .section {
    padding: 120px 48px;
  }
  .section-inner {
    max-width: 1100px; margin: 0 auto;
  }
  /* 連続するセクションは余白を二重化しない */
  .section + .section {
    padding-top: 120px;
  }
  .section-head {
    margin-bottom: 60px;
  }
  .section-head h2 {
    font-family: "Yu Mincho", serif;
    font-size: clamp(24px, 3vw, 34px);
    letter-spacing: 0.12em; font-weight: 400;
    margin-bottom: 8px;
  }
  .section-head .en {
    font-size: 10px; letter-spacing: 0.45em;
    color: var(--accent);
    text-indent: 0.45em;
  }
  .section-bg-neutral { background: var(--neutral-50); }

  /* ===== Service Detail（下層 services.html） ===== */
  .service-detail {
    padding: 100px 48px;
    border-bottom: 1px solid var(--line);
  }
  .service-detail:last-of-type { border-bottom: none; }
  .service-detail-inner {
    max-width: 1200px; margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px; align-items: center;
  }
  .service-detail.reverse .service-detail-inner {
    direction: rtl;
  }
  .service-detail.reverse .service-detail-inner > * {
    direction: ltr;
  }
  .service-detail-info .num {
    font-family: "Helvetica Neue", sans-serif;
    font-size: 13px; letter-spacing: 0.4em;
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 22px;
  }
  .service-detail-info h2 {
    font-family: "Yu Mincho", serif;
    font-size: clamp(34px, 4vw, 52px);
    letter-spacing: 0.1em; font-weight: 400;
    line-height: 1.3;
    margin-bottom: 8px;
  }
  .service-detail-info .en {
    font-size: 11px; letter-spacing: 0.4em;
    color: var(--ink-light);
    margin-bottom: 28px;
    text-indent: 0.4em;
  }
  .service-detail-info .lead {
    font-family: "Yu Mincho", serif;
    font-size: 16px; line-height: 2;
    letter-spacing: 0.08em;
    margin-bottom: 28px;
  }
  .service-detail-info .desc {
    font-size: 13.5px; line-height: 2;
    letter-spacing: 0.05em;
    color: var(--ink-light);
    margin-bottom: 32px;
  }
  .service-points {
    list-style: none;
    border-top: 1px solid var(--line);
  }
  .service-points li {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    font-size: 13.5px;
    letter-spacing: 0.05em;
  }
  .service-points li::before {
    content: '';
    display: block;
    width: 14px; height: 1px;
    background: var(--accent);
    flex-shrink: 0;
  }
  .service-detail-image {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #f0f0f0;
    position: relative;
  }
  .service-detail-image img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
  }
  .service-detail-image .img-label {
    position: absolute; bottom: 16px; left: 16px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    font-size: 10px; letter-spacing: 0.4em;
    padding: 6px 12px;
    text-indent: 0.4em;
  }

  /* ===== News Archive（下層 news.html） ===== */
  .news-archive {
    max-width: 1100px; margin: 0 auto;
  }
  .news-year-group {
    margin-bottom: 70px;
  }
  .news-year-group:last-child { margin-bottom: 0; }
  .news-year-label {
    font-family: "Helvetica Neue", "Yu Mincho", sans-serif;
    font-size: clamp(16px, 1.8vw, 20px);
    line-height: 1; font-weight: 500;
    color: var(--ink);
    letter-spacing: 0.3em;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    text-indent: 0.3em;
  }
  .news-year-label .count {
    font-family: "Helvetica Neue", sans-serif;
    font-size: 10px; letter-spacing: 0.3em;
    color: var(--ink-light);
    font-weight: 400;
    text-indent: 0.3em;
  }

  /* Archive 折りたたみ（details/summary） */
  .news-archive-toggle {
    margin-top: 30px;
  }
  .news-archive-toggle > summary {
    list-style: none;
    cursor: pointer;
    font-family: "Helvetica Neue", sans-serif;
    font-size: clamp(16px, 1.8vw, 20px);
    font-weight: 500;
    color: var(--ink);
    letter-spacing: 0.3em;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: color 0.2s;
    text-indent: 0.3em;
  }
  .news-archive-toggle > summary::-webkit-details-marker { display: none; }
  .news-archive-toggle > summary:hover { color: var(--accent); }
  .news-archive-toggle > summary::after {
    content: '＋';
    font-size: 18px;
    color: var(--accent);
    font-weight: 400;
    transition: transform 0.3s;
  }
  .news-archive-toggle[open] > summary::after {
    content: '−';
    transform: rotate(0deg);
  }
  .news-archive-toggle[open] > summary {
    margin-bottom: 30px;
  }
  .news-archive-toggle .news-year-group {
    animation: fadeIn 0.3s ease-out;
  }
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .news-list-full {
    list-style: none;
  }
  .news-list-full li {
    display: grid;
    grid-template-columns: 140px 100px 1fr;
    gap: 28px;
    padding: 24px 0;
    border-bottom: 1px solid var(--line);
    align-items: center;
    transition: padding-left 0.3s, background 0.2s;
    cursor: pointer;
  }
  .news-list-full li:hover {
    padding-left: 14px;
    background: rgba(201, 56, 40, 0.02);
  }
  .news-list-full .nl-date {
    font-family: "Helvetica Neue", sans-serif;
    font-size: 12px; letter-spacing: 0.12em;
    color: var(--ink-light);
  }
  .news-list-full .nl-cat {
    font-size: 10px; letter-spacing: 0.28em;
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 5px 0;
    text-align: center;
    text-transform: uppercase;
    text-indent: 0.28em;
  }
  .news-list-full .nl-title {
    font-size: 14px; letter-spacing: 0.04em;
    line-height: 1.7;
  }

  /* ===== News Detail（記事詳細 news-detail.html） ===== */
  /* 詳細ページの Hero は他より控えめサイズに */
  .page-hero.news-detail-hero {
    padding-bottom: 70px;
  }
  .page-hero.news-detail-hero h1 {
    font-size: clamp(20px, 2.2vw, 26px);
    letter-spacing: 0.1em;
    line-height: 1.55;
    margin-bottom: 8px;
  }
  .news-detail-inner {
    max-width: 820px;
    margin: 0 auto;
  }
  .news-meta {
    display: flex;
    gap: 22px;
    align-items: baseline;
    margin-top: 26px;
  }
  .news-meta .news-date {
    font-family: "Helvetica Neue", sans-serif;
    font-size: 13px; letter-spacing: 0.15em;
    color: var(--ink-light);
  }
  .news-meta .news-cat {
    font-size: 10px; letter-spacing: 0.28em;
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 5px 12px;
    text-transform: uppercase;
    text-indent: 0.28em;
    line-height: 1.4;
  }
  /* 詳細ページ本文セクションの余白を縮める */
  .section.news-detail-section {
    padding-top: 70px;
    padding-bottom: 80px;
  }
  .news-content {
    font-size: 14.5px;
    line-height: 2.1;
    letter-spacing: 0.05em;
    color: var(--ink);
  }
  .news-content h2 {
    font-family: "Yu Mincho", serif;
    font-size: clamp(20px, 2.4vw, 28px);
    line-height: 1.5; letter-spacing: 0.08em;
    font-weight: 400;
    margin: 60px 0 24px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line);
  }
  .news-content h3 {
    font-family: "Yu Mincho", serif;
    font-size: clamp(17px, 2vw, 22px);
    line-height: 1.5; letter-spacing: 0.08em;
    font-weight: 400;
    margin: 40px 0 18px;
  }
  .news-content p { margin-bottom: 24px; }
  .news-content a {
    color: var(--accent);
    border-bottom: 1px solid var(--accent);
  }
  .news-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 28px auto;
  }
  .news-content ul, .news-content ol {
    margin-bottom: 24px;
    padding-left: 1.5em;
  }
  .news-content ul li, .news-content ol li {
    margin-bottom: 8px;
  }
  .news-content blockquote {
    margin: 28px 0;
    padding: 16px 24px;
    border-left: 3px solid var(--accent);
    background: var(--neutral-50);
    color: var(--ink-light);
    font-size: 14px;
  }
  /* 戻るボタン専用セクション — フル幅の区切り線 */
  .back-to-list-section {
    text-align: center;
    padding: 50px 48px 90px;
    border-top: 1px solid var(--line);
  }
  .back-to-list-section a {
    display: inline-block;
    font-size: 12px; letter-spacing: 0.25em;
    color: var(--ink);
    padding: 16px 40px;
    border: 1px solid var(--ink);
    background: #fff;
    text-indent: 0.25em;
    transition: background 0.2s, color 0.2s;
  }
  .back-to-list-section a:hover {
    background: var(--ink); color: #fff;
  }
  /* 詳細ページでは section の下マージンを減らす（区切り線セクションが直後に来るため） */
  .section.news-detail-section {
    padding-bottom: 50px;
  }
  .news-loading-spinner {
    text-align: center;
    padding: 60px 0;
    color: var(--ink-light);
    font-size: 13px;
    letter-spacing: 0.2em;
  }

  /* ===== Contact Detail（下層 contact.html） ===== */
  .contact-intro {
    max-width: 760px;
    margin: 0 auto 80px;
    text-align: center;
  }
  .contact-intro p {
    font-family: "Yu Mincho", serif;
    font-size: clamp(15px, 1.7vw, 18px);
    line-height: 2.2; letter-spacing: 0.12em;
    color: var(--ink);
  }
  .contact-methods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto 100px;
  }
  .contact-method-card {
    border: 1px solid var(--line);
    padding: 50px 36px;
    text-align: center;
    transition: border-color 0.2s, transform 0.2s;
  }
  .contact-method-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
  }
  .contact-method-card .icon {
    font-size: 24px;
    color: var(--accent);
    margin-bottom: 16px;
    display: block;
  }
  .contact-method-card .method-label {
    font-size: 10px; letter-spacing: 0.45em;
    color: var(--ink-light);
    margin-bottom: 18px;
    text-indent: 0.45em;
  }
  .contact-method-card .method-value {
    font-family: "Yu Mincho", serif;
    font-size: clamp(22px, 2.4vw, 30px);
    letter-spacing: 0.04em;
    color: var(--ink);
    line-height: 1.4;
    display: block;
  }
  .contact-method-card .method-value a {
    color: inherit; text-decoration: none;
  }
  .contact-method-card .method-note {
    font-size: 11px; letter-spacing: 0.15em;
    color: var(--ink-light);
    margin-top: 14px;
  }

  /* Form */
  .contact-form {
    max-width: 760px;
    margin: 0 auto;
  }
  .form-row {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 32px;
    padding: 22px 0;
    border-bottom: 1px solid var(--line);
    align-items: start;
  }
  .form-row:first-child { border-top: 1px solid var(--line); }
  .form-row label {
    font-size: 12px; letter-spacing: 0.18em;
    color: var(--ink);
    padding-top: 14px;
  }
  .form-row .required {
    color: var(--accent);
    font-size: 10px;
    margin-left: 6px;
  }
  .form-row input,
  .form-row textarea {
    width: 100%;
    border: none;
    background: transparent;
    font-family: inherit;
    font-size: 14px;
    color: var(--ink);
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    outline: none;
    transition: border-color 0.2s;
  }
  .form-row input:focus,
  .form-row textarea:focus {
    border-bottom-color: var(--accent);
  }
  .form-row textarea {
    resize: vertical;
    min-height: 120px;
    border-bottom: 1px solid var(--line);
  }
  .form-submit-row {
    text-align: center;
    margin-top: 50px;
  }
  .form-submit {
    display: inline-block;
    padding: 22px 80px;
    background: var(--ink);
    color: #fff;
    font-size: 12px; letter-spacing: 0.4em;
    border: none;
    cursor: pointer;
    transition: background 0.2s;
    font-family: inherit;
    text-indent: 0.4em;
  }
  .form-submit:hover {
    background: var(--accent);
  }
  .form-note {
    text-align: center;
    font-size: 11px;
    color: var(--ink-light);
    margin-top: 20px;
    line-height: 1.9;
    letter-spacing: 0.08em;
  }

  /* 作例ページへの誘導ボタン（services.html 各カテゴリ内） */
  .works-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-top: 30px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--accent);
    font-size: 11px;
    letter-spacing: 0.3em;
    color: var(--accent);
    text-indent: 0.3em;
    transition: gap 0.3s;
  }
  .works-link-btn:hover { gap: 18px; }
  .works-link-btn .arrow { font-size: 13px; transition: transform 0.3s; }
  .works-link-btn:hover .arrow { transform: translateX(4px); }

  /* 作例ページの Hero（タイトル小さめ・装飾なしなので低め） */
  .page-hero.works-hero {
    min-height: 300px;
  }
  .page-hero.works-hero h1 {
    font-size: clamp(16px, 1.8vw, 21px);
    letter-spacing: 0.14em;
    margin-bottom: 6px;
  }

  /* 作例ページ（works-*.html）の戻るリンク */
  .works-back {
    text-align: center;
    margin-top: 70px;
    padding-top: 50px;
    border-top: 1px solid var(--line);
  }
  .works-back a {
    display: inline-block;
    font-size: 12px; letter-spacing: 0.25em;
    color: var(--ink);
    padding: 16px 40px;
    border: 1px solid var(--ink);
    background: #fff;
    text-indent: 0.25em;
    transition: background 0.2s, color 0.2s;
  }
  .works-back a:hover { background: var(--ink); color: #fff; }

  /* ===== Works Gallery（作例ページの作例グリッド） ===== */
  .works-section {
    max-width: 1200px;
    margin: 64px auto 0;
  }
  .works-section-title {
    font-size: 11px; letter-spacing: 0.4em;
    color: var(--accent);
    margin-bottom: 28px;
    text-indent: 0.4em;
    display: flex; align-items: center; gap: 14px;
  }
  .works-section-title::before {
    content: ''; width: 30px; height: 1px; background: var(--accent);
  }
  .works-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }
  .works-item {
    background: #fff;
    border: 1px solid var(--line);
    overflow: hidden;
  }
  .works-item .works-img {
    aspect-ratio: 4 / 3;
    display: flex; align-items: center; justify-content: center;
    background: #fafafa;
    overflow: hidden;
  }
  .works-item .works-img img {
    width: 100%; height: 100%;
    object-fit: contain;
    transition: transform 0.4s ease;
    display: block;
  }
  .works-item:hover .works-img img { transform: scale(1.05); }
  .works-cap {
    padding: 12px 16px;
    font-size: 11.5px;
    color: var(--ink-light);
    letter-spacing: 0.04em;
    line-height: 1.6;
    border-top: 1px solid var(--line);
  }

  /* ===== Philosophy 専用 ===== */
  .philosophy-quote {
    font-family: "Yu Mincho", serif;
    font-size: clamp(20px, 2.5vw, 28px);
    line-height: 2.2; letter-spacing: 0.12em;
    text-align: left;
    padding: 40px 0 44px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    max-width: 760px;
  }
  .philosophy-lead {
    margin-top: 36px;
    font-size: 14.5px;
    line-height: 2.1;
    letter-spacing: 0.06em;
    max-width: 760px;
  }
  .philosophy-lead + .philosophy-lead {
    margin-top: 22px;
  }

  /* ===== Timeline（沿革） ===== */
  .timeline {
    position: relative;
    padding-left: 30px;
  }
  .timeline::before {
    content: ''; position: absolute;
    left: 8px; top: 6px; bottom: 6px;
    width: 1px; background: var(--line);
  }
  .timeline-item {
    position: relative;
    padding: 0 0 40px 28px;
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 32px; align-items: baseline;
  }
  .timeline-item::before {
    content: ''; position: absolute;
    left: -27px; top: 8px;
    width: 9px; height: 9px;
    border-radius: 50%;
    background: var(--accent);
  }
  .timeline-item:last-child { padding-bottom: 0; }
  .timeline-year {
    font-family: "Yu Mincho", serif;
    font-size: 22px; letter-spacing: 0.1em;
    color: var(--accent);
    line-height: 1;
  }
  .timeline-text h3 {
    font-family: "Yu Mincho", serif;
    font-size: 17px; letter-spacing: 0.08em;
    font-weight: 400; margin-bottom: 6px;
  }
  .timeline-text p {
    font-size: 13.5px; line-height: 2;
    color: var(--ink-light);
  }

  /* ===== Info Table（会社概要） ===== */
  .info-table {
    width: 100%;
    border-top: 1px solid var(--line);
  }
  .info-table dl {
    display: grid;
    grid-template-columns: 200px 1fr;
    border-bottom: 1px solid var(--line);
  }
  .info-table dt {
    font-size: 11px; letter-spacing: 0.3em;
    padding: 22px 0;
    color: var(--ink-light);
    text-indent: 0.3em;
    font-weight: normal;
  }
  .info-table dd {
    font-size: 14px; padding: 22px 0;
    color: var(--ink);
    line-height: 1.9;
  }
  .info-table dd .tbd {
    color: #c93828;
    font-size: 11px;
    background: #fee;
    padding: 2px 8px;
    border-radius: 3px;
    margin-left: 8px;
  }

  /* ===== Access ===== */
  .access-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
  }
  .access-info h3 {
    font-family: "Yu Mincho", serif;
    font-size: 20px; letter-spacing: 0.1em;
    margin-bottom: 18px; font-weight: 400;
  }
  .access-info p {
    font-size: 14px; line-height: 2;
    color: var(--ink-light);
  }
  .access-info strong {
    color: var(--ink); font-weight: normal;
    display: block; font-size: 15px;
    margin-top: 14px;
    border-top: 1px solid var(--line);
    padding-top: 14px;
  }
  .access-map {
    aspect-ratio: 4 / 3;
    background: #f0f0f0;
    border: 1px solid var(--line);
    position: relative;
    overflow: hidden;
  }
  .access-map iframe {
    display: block;
  }
  .access-map .map-btn {
    position: absolute; bottom: 16px; right: 16px;
    font-family: "Helvetica Neue", "Arial", sans-serif;
    font-size: 12px; letter-spacing: 0.12em;
    font-weight: 500;
    color: #fff;
    background: #1a1a1a;
    padding: 12px 18px 12px 38px;
    z-index: 2;
    display: inline-flex; align-items: center; gap: 8px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.18);
    transition: background 0.2s, transform 0.15s;
    border-radius: 2px;
    /* SVG ピンアイコンを背景に */
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='M21 10c0 7-9 13-9 13s-9-6-9-13a9 9 0 0 1 18 0z'/><circle cx='12' cy='10' r='3'/></svg>");
    background-repeat: no-repeat;
    background-position: 14px center;
    background-size: 14px 14px;
  }
  .access-map .map-btn:hover {
    background-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(0,0,0,0.25);
  }
  /* 道順（経路）ボタン：Google埋め込みの経路アイコンはデスクトップでは元から出る → デスクトップは非表示、モバイルのみ表示 */
  .access-map .map-dir-btn {
    display: none;
    top: 16px; bottom: auto; left: auto; right: 16px;
    background-color: #1a73e8;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polygon points='3 11 22 2 13 21 11 13 3 11'/></svg>");
  }
  .access-map .map-dir-btn:hover {
    background-color: var(--accent);
  }
  .access-map .map-btn .arrow {
    font-size: 13px;
    opacity: 0.8;
  }

  /* ===== レスポンシブ ===== */
  @media (max-width: 900px) {
    .header-inner { padding: 16px 24px; }
    /* メニューボタン表示（縦3点・ケバブ） */
    .nav-toggle {
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      gap: 4px; width: 34px; height: 34px;
      background: none; border: none; padding: 0; cursor: pointer;
      z-index: 101;
    }
    .nav-toggle-bar {
      display: block; width: 5px; height: 5px; border-radius: 50%;
      background: var(--ink);
      transition: background 0.3s ease, transform 0.3s ease;
    }
    /* ナビ＝ヘッダー下にドロップダウン */
    nav {
      position: absolute; top: 100%; left: 0; right: 0;
      background: rgba(255, 255, 255, 0.98);
      max-height: 0; overflow: hidden;
      transition: max-height 0.35s ease;
      box-shadow: 0 10px 24px rgba(0, 0, 0, 0.06);
    }
    body.nav-open nav { max-height: 70vh; }
    nav ul { flex-direction: column; gap: 0; padding: 4px 24px 16px; }
    nav ul li { border-bottom: 1px solid var(--line); }
    nav a { display: block; padding: 16px 2px; font-size: 13px; letter-spacing: 0.2em; }
    nav a::after { display: none; }
    /* 開いたとき：3点を朱色に */
    body.nav-open .nav-toggle-bar { background: var(--accent); }
    .hero-content, .about, .services, .news, .contact { padding-left: 24px; padding-right: 24px; }
    /* Hero h1: モバイルでは折り返し許容 */
    .hero h1 {
      white-space: normal;
      font-size: clamp(18px, 5vw, 24px);
      letter-spacing: 0.08em;
      line-height: 1.7;
    }
    .about-inner { grid-template-columns: 1fr; gap: 48px; }
    .about-text { padding-right: 0; }
    /* 60TH枠：モバイルは固定比をやめ内容に合わせる（TOKYO JAPANが下罫線にぶつからないように） */
    .about-visual { aspect-ratio: auto; padding: 46px 28px 44px; }
    .services-header { flex-direction: column; align-items: flex-start; gap: 16px; }
    .services-header .lead { text-align: left; }
    .service-row { grid-template-columns: 1fr; gap: 24px; padding: 40px 0; }
    .service-row .service-num { padding-top: 0; }
    .news-list li { grid-template-columns: 100px 80px 1fr; gap: 16px; }
    .footer-inner { grid-template-columns: 1fr 1fr; gap: 30px; }
    .hero-scroll { display: none; }
    /* 下層ページ */
    .page-hero { padding: 130px 24px 60px; }
    .page-hero .deco-anniv { right: 46px; opacity: 0.5; }
    .page-hero .deco-num { font-size: 96px; }
    .page-hero .deco-label { font-size: 9px; }
    .section { padding: 60px 24px; }
    .timeline-item { grid-template-columns: 1fr; gap: 8px; }
    .info-table dl { grid-template-columns: 100px 1fr; }
    .access-block { grid-template-columns: 1fr; gap: 30px; }
    /* 道順ボタンはモバイルのみ表示（デスクトップはGoogleの経路アイコンがあるため） */
    .access-map .map-dir-btn { display: inline-flex; }
    .service-detail { padding: 60px 24px; }
    .service-detail-inner { grid-template-columns: 1fr; gap: 36px; }
    .service-detail.reverse .service-detail-inner { direction: ltr; }
    .works-gallery { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .works-section { margin-top: 44px; }
    /* News */
    .news-list-full li { grid-template-columns: 100px 80px 1fr; gap: 14px; }
    .news-year-label { font-size: clamp(28px, 8vw, 40px); }
    /* Contact */
    .contact-methods { grid-template-columns: 1fr; gap: 20px; margin-bottom: 60px; }
    .contact-method-card { padding: 32px 24px; }
    .form-row { grid-template-columns: 1fr; gap: 8px; }
    .form-row label { padding-top: 0; }
  }
  @media (max-width: 600px) {
    .footer-inner { grid-template-columns: 1fr; }
    .news-list li { grid-template-columns: 1fr; gap: 6px; padding: 18px 0; }
    .news-cat { justify-self: start; }
    .works-gallery { grid-template-columns: 1fr; }
  }