/* ===== Phase5統合: 旧 _styles-rest.css（base と components の間に読み込まれていた共有/home系スタイル）===== */
/* =========================================================
   _styles-rest.css
   Phase 3 で styles.css から分離した残り。Phase 4-5 で components.css / pages/home.css 等へ振り分け予定
   ========================================================= */

  /* =========================================================
     HERO
     ========================================================= */
  /* =========================================================
     HERO — 横スワイプ カードカルーセル
     ========================================================= */
  .hero{
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    color: var(--paper);
    overflow: hidden;
    isolation: isolate;
    /* 全画面ヒーローは section 共通の縦padding(--section-y)を打ち消し、画像を最上部まで届かせる
       （hero を <header>→<section> 化した際に section primitive の padding を継承してしまうため） */
    padding: 0;
  }

  /* スクロールスナップ・トラック */
  .hero__carousel{
    width: 100%;
    height: 100vh;
    height: 100svh;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
  }
  .hero__carousel::-webkit-scrollbar { display: none; }
  .hero__carousel:focus-visible{
    outline: 3px solid var(--koi);
    outline-offset: -3px;
  }

  .hero__track{
    display: flex;
    height: 100%;
  }

  /* 各カード（1画面=1スライド） */
  .hero__card{
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    position: relative;
    overflow: hidden;
    isolation: isolate;
  }

  /* イントロカードの背景（旧 .hero__bg） */
  .hero__card-bg--intro{
    position: absolute; inset: 0;
    background-image:
      linear-gradient(180deg, rgba(20,15,10,0.25) 0%, rgba(20,15,10,0.55) 70%, rgba(20,15,10,0.78) 100%),
      url("../images/IMG_8027.jpeg");
    background-image:
      linear-gradient(180deg, rgba(20,15,10,0.25) 0%, rgba(20,15,10,0.55) 70%, rgba(20,15,10,0.78) 100%),
      image-set(url("../images/IMG_8027.webp") type("image/webp"), url("../images/IMG_8027.jpeg") type("image/jpeg"));
    background-size: cover;
    background-position: center;
    z-index: -1;
    transform: scale(1.05);
    animation: heroZoom 18s ease-out forwards;
  }
  @keyframes heroZoom { to { transform: scale(1); } }

  /* 写真カードの背景画像 */
  .hero__card-img{
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    transform: scale(1.02);
  }

  /* 写真カードのグラデーション（下に向かって暗く・テキスト可読性確保） */
  .hero__card:not(.hero__card--intro)::after{
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(20,15,10,0.25) 0%, rgba(20,15,10,0.55) 70%, rgba(20,15,10,0.78) 100%);
    pointer-events: none;
    z-index: 0;
  }

  /* 全カード共通の固定オーバーレイ（カードがスクロールしてもこれは動かない） */
  .hero__overlay{
    position: absolute;
    z-index: 4;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;  /* テキストはクリック抜け、ボタンだけ受ける */
    padding: 0 var(--gutter) 120px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    max-width: 1200px;
    margin: 0 auto;
    color: var(--paper);
  }
  .hero__overlay > *{
    pointer-events: auto;  /* 内部の要素はクリック可能に戻す */
  }

  /* ナビゲーション（ドットのみ・前後ボタンなし） */
  .hero__nav{
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    z-index: 5;
  }

  .hero__dots{
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .hero__dot{
    width: 8px;
    height: 8px;
    padding: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    border: none;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.3s ease, width 0.3s ease;
  }
  .hero__dot:hover{
    background: rgba(255,255,255,0.7);
  }
  .hero__dot--active{
    background: var(--koi);
    width: 24px;
    border-radius: 4px;
  }
  .hero__dot:focus-visible{
    outline: 2px solid var(--koi);
    outline-offset: 2px;
  }

  /* モバイル調整 */
  @media (max-width: 640px){
    .hero__overlay{
      padding-bottom: 100px;
    }
    .hero__nav{
      bottom: 24px;
    }
  }

  /* モーション軽減モード */
  @media (prefers-reduced-motion: reduce){
    .hero__carousel{ scroll-behavior: auto; }
    .hero__card-bg--intro{ animation: none; transform: none; }
    .hero__dot{ transition: none; }
  }

  .hero__swipe{
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    background: var(--koi);
    color: var(--ink);
    padding: 8px 28px 20px;
    border-radius: 0 0 50% 50% / 0 0 100% 100%;
    width: clamp(280px, 50%, 460px);
    text-align: center;
    font-size: 12px;
    letter-spacing: 0.06em;
    font-weight: 500;
    line-height: 1.5;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  }
  .hero__swipe .en{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 11px;
    opacity: 0.7;
    display: block;
    margin-top: 2px;
  }
  .hero__swipe .arrow{
    display: block;
    margin-top: 6px;
    font-size: 10px;
    opacity: 0.7;
    animation: bob 2s ease-in-out infinite;
  }
  @keyframes bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
  }

  .hero__inner{
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 140px var(--gutter) 80px;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 40px;
    position: relative;
  }
  .hero__copy{
    max-width: 720px;
  }
  .hero__lockup{
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
    opacity: 0.85;
  }
  .hero__lockup svg{
    width: 44px; height: 44px;
    background: rgba(255,255,255,0.95);
    padding: 6px;
    border-radius: 4px;
  }
  .hero__lockup .ja{
    font-family: var(--serif);
    font-size: 14px;
    letter-spacing: 0.16em;
    font-weight: 500;
  }
  .hero__lockup .en{
    font-family: var(--en-serif);
    font-size: 9px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    opacity: 0.7;
    display: block;
    margin-top: -2px;
  }

  .hero__title{
    font-family: var(--serif);
    font-weight: 600;
    font-size: clamp(36px, 7vw, 76px);
    line-height: 1.35;
    letter-spacing: 0.04em;
    margin: 0 0 28px;
    text-shadow: 0 4px 30px rgba(0,0,0,0.25);
  }
  .hero__title .accent{
    color: var(--koi);
  }
  .hero__sub{
    font-size: clamp(13px, 1.4vw, 15px);
    line-height: 2;
    letter-spacing: 0.08em;
    margin: 0 0 40px;
    max-width: 540px;
    opacity: 0.92;
    font-weight: 300;
  }
  .hero__sub .strong{
    font-weight: 500;
    border-bottom: 1px solid rgba(232, 181, 58, 0.7);
    padding-bottom: 1px;
  }

  .hero__ctas{
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }
  /* Floor map mini-illustration top right of hero */
  .hero__floor{
    align-self: end;
    width: 130px;
    color: var(--paper);
    font-family: var(--serif);
    text-align: center;
    line-height: 1.3;
    flex-shrink: 0;
  }
  .hero__floor .floor{
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 4px;
    padding: 14px 12px;
    margin-bottom: 10px;
    backdrop-filter: blur(6px);
    position: relative;
  }
  .hero__floor .floor--koi{
    background: var(--koi);
    color: var(--ink);
    border-color: var(--koi);
  }
  .hero__floor .level{
    font-family: var(--serif);
    font-size: 22px;
    font-weight: 600;
    line-height: 1;
    display: block;
  }
  .hero__floor .role{
    font-size: 10px;
    letter-spacing: 0.15em;
    margin-top: 4px;
    display: block;
    text-transform: uppercase;
    font-family: var(--en-serif);
    font-style: normal;
    opacity: 0.85;
  }
  .hero__floor .name{
    font-size: 12px;
    letter-spacing: 0.2em;
    margin-top: 2px;
    display: block;
  }
  .hero__floor .arrow-stack{
    color: var(--koi);
    font-size: 16px;
    margin: 6px 0;
  }

  .hero__scroll{
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--paper);
    font-family: var(--en-serif);
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    opacity: 0.6;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
  .hero__scroll .line{
    width: 1px; height: 40px;
    background: var(--paper);
    animation: scrollLine 2s ease-in-out infinite;
  }
  @keyframes scrollLine{
    0%{ transform: scaleY(0); transform-origin: top; }
    50%{ transform: scaleY(1); transform-origin: top; }
    51%{ transform: scaleY(1); transform-origin: bottom; }
    100%{ transform: scaleY(0); transform-origin: bottom; }
  }

  /* =========================================================
     SECTION 2 — About
     ========================================================= */
  .about{
    background: var(--paper);
  }
  .about__grid{
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: clamp(40px, 6vw, 80px);
    align-items: center;
  }
  .about__copy .eyebrow{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 13px;
    letter-spacing: 0.14em;
    color: var(--koi-deep);
    margin: 0 0 16px;
  }
  .about__name{
    font-family: var(--serif);
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 600;
    letter-spacing: 0.06em;
    margin: 0 0 6px;
    line-height: 1.3;
  }
  .about__name .ma{ color: var(--koi-deep); }
  .about__reading{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 14px;
    letter-spacing: 0.14em;
    color: var(--ink-3);
    margin: 0 0 32px;
  }
  .about__body{
    font-size: 15px;
    line-height: 2.1;
    letter-spacing: 0.04em;
    color: var(--ink-2);
    margin: 0;
  }
  .about__body .em{
    font-family: var(--serif);
    font-weight: 600;
    color: var(--ink);
    font-size: 1.1em;
  }
  .about__body p + p{ margin-top: 1.2em; }

  .about__images{
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 12px;
    position: relative;
  }
  .about__images img{
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 2px;
    filter: saturate(0.92);
  }
  .about__images .ph-1{ grid-row: 1 / span 2; aspect-ratio: 4/5; }
  .about__images .ph-2{ aspect-ratio: 1/1; }
  .about__images .ph-3{ aspect-ratio: 1/1; }
  .about__images::after{
    content:"";
    position: absolute;
    bottom: -20px; right: -20px;
    width: 80px; height: 80px;
    background-image:
      radial-gradient(circle, var(--koi) 25%, transparent 25%);
    background-size: 12px 12px;
    opacity: 0.85;
    z-index: -1;
  }

  /* =========================================================
     SECTION 3 — Ways to spend
     ========================================================= */
  .ways{
    background: var(--paper);
  }
  .ways__grid{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }
  .way-card{
    background: var(--cream);
    border: 1px solid var(--rule-soft);
    border-radius: 4px;
    padding: 44px 36px 40px;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    position: relative;
    overflow: hidden;
  }
  .way-card:hover{
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(42, 36, 29, 0.08);
  }
  .way-card__icon{
    width: 56px; height: 56px;
    border: 1px solid var(--rule);
    border-radius: 50%;
    display: grid;
    place-items: center;
    margin-bottom: 24px;
    background: var(--paper);
    color: var(--ink-2);
  }
  .way-card__num{
    position: absolute;
    top: 28px; right: 36px;
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 13px;
    letter-spacing: 0.2em;
    color: var(--ink-3);
  }
  .way-card__kicker{
    font-size: 12px;
    letter-spacing: 0.12em;
    color: var(--ink-3);
    margin-bottom: 6px;
    font-weight: 500;
  }
  .way-card__title{
    font-family: var(--serif);
    font-size: clamp(22px, 2.4vw, 28px);
    font-weight: 600;
    margin: 0 0 18px;
    letter-spacing: 0.06em;
    line-height: 1.4;
  }
  .way-card__body{
    font-size: 13.5px;
    line-height: 1.95;
    color: var(--ink-2);
    letter-spacing: 0.04em;
    margin: 0 0 28px;
  }
  .way-card__cta{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: 1px solid var(--ink);
    border-radius: 999px;
    font-size: 12px;
    letter-spacing: 0.15em;
    transition: background 0.2s, color 0.2s;
  }
  .way-card__cta:hover{
    background: var(--ink);
    color: var(--paper);
  }
  .way-card--feature{
    background: var(--koi);
    border-color: var(--koi);
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 32px;
    padding: 32px 40px;
  }
  .way-card--feature .way-card__icon{
    background: rgba(255,255,255,0.9);
    border: none;
    margin: 0;
  }
  .way-card--feature .way-card__title{
    margin: 0 0 4px;
    font-size: 22px;
  }
  .way-card--feature .way-card__body{
    margin: 0;
    font-size: 13px;
  }
  .way-card--feature .way-card__cta{
    background: var(--ink);
    color: var(--koi);
    border-color: var(--ink);
    white-space: nowrap;
  }
  .way-card--feature .way-card__cta:hover{
    background: var(--paper);
    color: var(--ink);
  }

  /* =========================================================
     SECTION 4 — Story
     ========================================================= */
  .story{
    background: linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
    position: relative;
  }
  .story__inner{
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
  }
  .story__title{
    font-family: var(--serif);
    font-size: clamp(28px, 4.2vw, 46px);
    font-weight: 600;
    line-height: 1.55;
    letter-spacing: 0.08em;
    margin: 0 0 14px;
  }
  .story__title .keyword{
    background: linear-gradient(transparent 60%, var(--koi-soft) 60%);
    padding: 0 6px;
  }
  .story__title-en{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 13px;
    letter-spacing: 0.14em;
    color: var(--ink-3);
    margin: 0 0 56px;
    text-transform: uppercase;
  }

  .story__chapter{
    margin-top: 56px;
  }
  .story__chapter:first-of-type{ margin-top: 0; }
  .story__chapter-num{
    font-family: var(--serif);
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--terracotta);
    margin-bottom: 8px;
    text-transform: uppercase;
  }
  .story__chapter-title{
    font-family: var(--serif);
    font-size: clamp(18px, 2.2vw, 22px);
    font-weight: 600;
    margin: 0 0 24px;
    letter-spacing: 0.1em;
    line-height: 1.6;
  }
  .story__body{
    font-size: 15px;
    line-height: 2.15;
    letter-spacing: 0.05em;
    color: var(--ink-2);
    text-align: left;
  }
  .story__body p + p{ margin-top: 1.2em; }

  .story__divider{
    width: 1px;
    height: 56px;
    background: var(--rule);
    margin: 56px auto;
  }

  /* =========================================================
     Floor Map（建物断面図 × 鯉のぼりブランド）
     ========================================================= */
  .story__map{
    position: relative;
    margin-top: 64px;
    padding: 30px 26px;
    border: 1px solid var(--rule);
    border-radius: 14px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    text-align: left;
    /* ドットグラフ用紙風の背景 */
    background-color: var(--cream);
    background-image:
      radial-gradient(circle at center, rgba(42,36,29,0.05) 1px, transparent 1.4px);
    background-size: 18px 18px;
    background-position: 9px 9px;
    overflow: hidden;
  }

  /* 建物のラベル（左上の小見出し） */
  .story__map::before{
    content: "FLOOR MAP";
    position: absolute;
    top: 14px;
    right: 20px;
    font-family: var(--en-serif);
    font-size: 10px;
    letter-spacing: 0.16em;
    color: var(--ink-3);
    opacity: 0.55;
    pointer-events: none;
  }

  .story__map-row{
    display: grid;
    grid-template-columns: 94px 1fr auto;
    align-items: center;
    gap: 20px;
    padding: 22px 22px;
    border-radius: 10px;
    background: var(--paper);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
    color: inherit;
    text-decoration: none;
    transition:
      transform 0.4s cubic-bezier(0.34, 1.4, 0.64, 1),
      box-shadow 0.35s ease,
      border-color 0.3s ease;
  }
  /* 斜めグロー（ホバーで現れる） */
  .story__map-row::after{
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg, transparent 55%, rgba(232,181,58,0.12) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
  }
  .story__map-row:hover{
    transform: translateY(-4px);
    box-shadow: 0 14px 30px rgba(42, 36, 29, 0.09);
    border-color: var(--koi);
  }
  .story__map-row:hover::after{ opacity: 1; }

  .story__map-row--top{
    background: var(--paper);
  }
  .story__map-row--bot{
    background: linear-gradient(135deg, var(--koi) 0%, #F4C563 55%, var(--koi-soft) 100%);
    border-color: rgba(42,36,29,0.06);
  }

  /* 階層ラベル（鯉のぼり旗のバッジ：ローダーと同じ V 字切り欠き） */
  .story__map-level{
    /* 加須間ロゴの旗準拠: 180:77 (≒2.34:1) — 比率は厳守。サイズだけ変えること */
    display: grid;
    place-items: center;
    width: 88px;
    aspect-ratio: 180 / 77;
    background: var(--ink);
    color: var(--paper);
    font-family: var(--serif);
    font-size: 15px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0.04em;
    /* テキストが切り欠き(右21%)にかからないよう、左側に詰める */
    padding-right: 21%;
    clip-path: polygon(0 0, 100% 0, 79% 50%, 100% 100%, 0 100%);
    transition:
      transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1),
      background 0.3s ease,
      color 0.3s ease;
  }
  .story__map-row:hover .story__map-level{
    transform: scale(1.06) rotate(-3deg);
  }
  .story__map-row--bot .story__map-level{
    background: var(--ink);
    color: var(--koi);
  }

  /* テキスト情報 */
  .story__map-info .name{
    font-family: var(--serif);
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 0.12em;
    display: block;
    color: var(--ink);
  }
  .story__map-info .role{
    font-size: 11px;
    letter-spacing: 0.15em;
    color: var(--ink-3);
    margin-top: 6px;
    display: block;
  }
  .story__map-row--bot .story__map-info .role{
    color: rgba(42,36,29,0.7);
  }

  /* 矢印バッジ */
  .story__map-arrow{
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    border: 1px solid var(--rule);
    background: transparent;
    color: var(--ink-3);
    font-size: 14px;
    font-weight: 700;
    transition:
      transform 0.3s ease,
      background 0.3s ease,
      color 0.3s ease,
      border-color 0.3s ease;
  }
  .story__map-row--bot .story__map-arrow{
    border-color: rgba(42,36,29,0.28);
    color: var(--ink);
  }
  .story__map-row:hover .story__map-arrow{
    background: var(--ink);
    color: var(--koi);
    border-color: var(--ink);
  }
  .story__map-row--top:hover .story__map-arrow{
    animation: floor-arrow-up 0.9s ease infinite;
  }
  .story__map-row--bot:hover .story__map-arrow{
    animation: floor-arrow-down 0.9s ease infinite;
  }
  @keyframes floor-arrow-up{
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-5px); }
  }
  @keyframes floor-arrow-down{
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(5px); }
  }
  @media (prefers-reduced-motion: reduce){
    .story__map-row,
    .story__map-row .story__map-level,
    .story__map-row .story__map-arrow{
      animation: none !important;
      transition: none !important;
    }
  }

  /* =========================================================
     SECTION 5 — Three Signs (menu)
     ========================================================= */
  .signs{
    background: var(--paper);
  }
  .signs__title{
    font-family: var(--serif);
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 600;
    text-align: center;
    margin: 0 0 14px;
    letter-spacing: 0.1em;
  }
  .signs__title .three{
    font-family: var(--en-serif);
    font-style: normal;
    color: var(--koi-deep);
    font-size: 1.3em;
    padding: 0 0.1em;
  }
  .signs__lead{
    text-align: center;
    color: var(--ink-2);
    max-width: 560px;
    margin: 0 auto 72px;
    line-height: 2;
    font-size: 14px;
    letter-spacing: 0.05em;
  }

  .sign{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(40px, 6vw, 80px);
    align-items: center;
    margin-bottom: 90px;
  }
  .sign:last-child{ margin-bottom: 0; }
  .sign:nth-child(even) .sign__media{ order: 2; }
  .sign__media{
    position: relative;
    aspect-ratio: 1/1;
    overflow: hidden;
    border-radius: 2px;
  }
  .sign__media img{
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
  }
  .sign:hover .sign__media img{ transform: scale(1.04); }
  .sign__media .num{
    position: absolute;
    top: 18px; left: 18px;
    background: var(--paper);
    color: var(--ink);
    padding: 8px 14px;
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 13px;
    letter-spacing: 0.2em;
    border-radius: 2px;
  }
  .sign__copy{
    padding: 0 8px;
  }
  .sign__num{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 14px;
    letter-spacing: 0.14em;
    color: var(--koi-deep);
    margin-bottom: 12px;
  }
  .sign__name{
    font-family: var(--serif);
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 600;
    letter-spacing: 0.08em;
    margin: 0 0 8px;
    line-height: 1.4;
  }
  .sign__name-en{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 14px;
    color: var(--ink-3);
    letter-spacing: 0.2em;
    margin-bottom: 24px;
  }
  .sign__body{
    font-size: 14px;
    line-height: 2.05;
    color: var(--ink-2);
    letter-spacing: 0.04em;
    margin: 0 0 28px;
  }
  .sign__tag{
    display: inline-block;
    padding: 4px 14px;
    background: var(--paper-2);
    color: var(--ink-2);
    font-size: 11px;
    letter-spacing: 0.2em;
    border-radius: 2px;
    margin-right: 6px;
  }

  .signs__footer{
    text-align: center;
    margin-top: 80px;
    padding-top: 60px;
    border-top: 1px solid var(--rule);
  }
  .signs__footer p{
    color: var(--ink-2);
    font-size: 14px;
    line-height: 1.95;
    margin: 0 0 24px;
    letter-spacing: 0.06em;
  }

  /* =========================================================
     SECTION 6 — Gallery
     ========================================================= */
  .gallery{
    background: var(--ink);
    color: var(--paper);
  }
  .gallery .section-title{ color: var(--paper); }
  .gallery .section-rule{ background: var(--paper); opacity: 0.4; }
  .gallery .section-eyebrow{ color: var(--koi); }

  .gallery__carousel{
    position: relative;
    margin: 0 calc(var(--gutter) * -1) 48px;
    padding: 0 var(--gutter);
  }
  .gallery__track{
    display: flex;
    gap: 22px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding-left: var(--gutter);
    padding: 8px 0 28px;
    scrollbar-width: thin;
    scrollbar-color: rgba(246,241,232,0.3) transparent;
  }
  .gallery__track::-webkit-scrollbar{ height: 4px; }
  .gallery__track::-webkit-scrollbar-track{ background: rgba(246,241,232,0.08); }
  .gallery__track::-webkit-scrollbar-thumb{ background: rgba(246,241,232,0.3); border-radius: 4px; }

  .gallery__card{
    flex: 0 0 clamp(280px, 32vw, 380px);
    scroll-snap-align: start;
    background: rgba(246,241,232,0.04);
    border: 1px solid rgba(246,241,232,0.12);
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, border-color 0.3s ease;
  }
  .gallery__card:hover{
    transform: translateY(-4px);
    border-color: var(--koi);
  }
  .gallery__card-media{
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
  }
  .gallery__card-media img{
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
  }
  .gallery__card:hover .gallery__card-media img{ transform: scale(1.06); }
  .gallery__card-date{
    position: absolute;
    top: 12px; left: 12px;
    background: var(--paper);
    color: var(--ink);
    padding: 5px 12px;
    font-family: var(--serif);
    font-size: 11px;
    letter-spacing: 0.2em;
    border-radius: 2px;
  }
  .gallery__card-body{
    padding: 22px 22px 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .gallery__card-tag{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--koi);
    margin: 0;
  }
  .gallery__card-title{
    font-family: var(--serif);
    font-size: 18px;
    letter-spacing: 0.08em;
    margin: 0;
    line-height: 1.5;
    color: var(--paper);
  }
  .gallery__card-cap{
    font-size: 12.5px;
    line-height: 1.85;
    color: rgba(246,241,232,0.7);
    margin: 4px 0 0;
    letter-spacing: 0.04em;
  }

  .gallery__nav{
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 8px;
  }
  .gallery__nav-hint{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 12px;
    letter-spacing: 0.12em;
    color: rgba(246,241,232,0.5);
    text-transform: uppercase;
  }
  .gallery__nav-btns{ display: flex; gap: 10px; }
  .gallery__nav-btn{
    width: 48px; height: 48px;
    border: 1px solid rgba(246,241,232,0.3);
    border-radius: 50%;
    background: transparent;
    color: var(--paper);
    display: grid; place-items: center;
    transition: all 0.2s;
  }
  .gallery__nav-btn:hover{
    background: var(--koi);
    color: var(--ink);
    border-color: var(--koi);
  }

  .gallery__lead{
    max-width: 600px;
    margin: 0 auto 40px;
    text-align: center;
    line-height: 2;
    font-size: 14px;
    color: rgba(246, 241, 232, 0.85);
    letter-spacing: 0.08em;
  }
  .gallery__ctas{
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
  }
  .gallery__ctas .btn--ghost{
    color: var(--paper);
    border-color: rgba(246, 241, 232, 0.3);
  }

  /* =========================================================
     SECTION 7 — Hito ari
     ========================================================= */
  .hito{
    background: var(--paper);
    overflow: hidden;
  }
  .hito__title{
    font-family: var(--serif);
    font-size: clamp(28px, 4.2vw, 46px);
    font-weight: 600;
    text-align: center;
    letter-spacing: 0.18em;
    margin: 0 0 14px;
  }
  .hito__title-en{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 13px;
    letter-spacing: 0.14em;
    color: var(--ink-3);
    text-align: center;
    margin: 0 0 60px;
  }
  .hito__layout{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(40px, 6vw, 70px);
    align-items: center;
  }
  .hito__images{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .hito__images img{
    width: 100%;
    aspect-ratio: 1/1.1;
    object-fit: cover;
    border-radius: 2px;
    filter: saturate(0.88) contrast(1.02);
  }
  /* 千鳥配置は廃止（2×2 グリッドに揃える） */

  .hito__copy{
    font-size: 15px;
    line-height: 2.1;
    letter-spacing: 0.05em;
    color: var(--ink-2);
  }
  .hito__copy p + p{ margin-top: 1.2em; }
  .hito__copy .closing{
    font-family: var(--serif);
    font-size: 1.15em;
    color: var(--ink);
    border-left: 2px solid var(--koi);
    padding-left: 18px;
    margin-top: 1.5em;
  }

  /* =========================================================
     SECTION 8 — Access
     ========================================================= */
  .access{
    background: var(--paper-2);
  }
  .access__grid{
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: clamp(40px, 6vw, 64px);
  }
  .access__map{
    background: var(--cream);
    border: 1px solid var(--rule);
    border-radius: 4px;
    aspect-ratio: 4/5;
    position: relative;
    overflow: hidden;
  }
  .access__map svg{ width: 100%; height: 100%; display: block; }

  .access__info dl{
    margin: 0;
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 28px;
    row-gap: 0;
  }
  .access__info dt{
    font-family: var(--serif);
    font-size: 13px;
    letter-spacing: 0.2em;
    color: var(--ink);
    padding: 18px 0;
    border-top: 1px solid var(--rule);
    font-weight: 500;
    display: flex;
    align-items: flex-start;
    gap: 10px;
  }
  .access__info dt .ico{
    width: 18px; height: 18px;
    color: var(--indigo);
    flex-shrink: 0;
    margin-top: 2px;
  }
  .access__info dd{
    margin: 0;
    padding: 18px 0;
    border-top: 1px solid var(--rule);
    font-size: 14px;
    line-height: 1.85;
    color: var(--ink-2);
    letter-spacing: 0.04em;
  }
  .access__info dd .sub{
    display: block;
    font-size: 12px;
    color: var(--ink-3);
    margin-top: 4px;
    font-style: normal;
  }
  .access__info > div:last-child dt,
  .access__info > div:last-child dd{
    border-bottom: 1px solid var(--rule);
  }
  .access__ctas{
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .access__cta{
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 16px;
    padding: 18px 22px;
    background: var(--cream);
    border: 1px solid var(--rule);
    border-radius: 3px;
    transition: all 0.2s;
  }
  .access__cta:hover{
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
  }
  .access__cta:hover .access__cta-arr{ transform: translateX(4px); }
  .access__cta-ico{
    width: 22px; height: 22px;
    color: var(--indigo);
  }
  .access__cta:hover .access__cta-ico{ color: var(--koi); }
  .access__cta-label{
    font-family: var(--serif);
    font-size: 14px;
    letter-spacing: 0.1em;
  }
  .access__cta-arr{
    font-size: 14px;
    transition: transform 0.2s;
  }
  .access__phone-note{
    font-size: 11px;
    color: var(--ink-3);
    margin-top: 14px;
    text-align: right;
    letter-spacing: 0.05em;
  }

  /* =========================================================
     Footer
     ========================================================= */
  .footer{
    /* 暗めの店内写真 + ダークオーバーレイで雰囲気を作る */
    background-color: var(--ink);
    background-image:
      linear-gradient(180deg, rgba(20, 16, 12, 0.92), rgba(20, 16, 12, 0.96)),
      url("../images/about-interior.webp");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--paper);
    padding: 0;
    position: relative;
  }
  .footer__inner{
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 56px;
    padding-bottom: 56px;
    border-bottom: 1px solid rgba(246, 241, 232, 0.15);
  }
  .footer__brand .logo{
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 22px;
  }
  /* 旧ロゴSVG用のスタイルだったが、img タグに置き換え済みなので不要。
     残すと .footer__socials の SVG にも当たって、白い四角に見えてしまう。 */
  .footer__brand .ja{
    font-family: var(--serif);
    font-size: 18px;
    letter-spacing: 0.12em;
    font-weight: 600;
  }
  .footer__brand .en{
    font-family: var(--en-serif);
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    opacity: 0.7;
    display: block;
    margin-top: 2px;
  }
  .footer__tagline{
    font-family: var(--serif);
    font-size: 16px;
    line-height: 1.85;
    letter-spacing: 0.08em;
    margin: 0 0 24px;
    opacity: 0.95;
  }
  .footer__socials{
    display: flex;
    gap: 12px;
  }
  .footer__socials a{
    width: 38px; height: 38px;
    border: 1px solid rgba(246, 241, 232, 0.3);
    border-radius: 50%;
    display: grid;
    place-items: center;
    transition: all 0.2s;
  }
  .footer__socials a:hover{
    background: var(--koi);
    border-color: var(--koi);
    color: var(--ink);
  }
  .footer__col h4{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin: 0 0 18px;
    opacity: 0.7;
  }
  .footer__col ul{
    list-style: none;
    margin: 0; padding: 0;
    font-size: 13px;
    line-height: 2;
    letter-spacing: 0.06em;
    color: rgba(246, 241, 232, 0.85);
  }
  .footer__col ul a:hover{ color: var(--koi); }
  .footer__col p{
    font-size: 13px;
    line-height: 2;
    letter-spacing: 0.06em;
    color: rgba(246, 241, 232, 0.85);
    margin: 0;
  }

  .footer__bottom{
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    letter-spacing: 0.15em;
    color: rgba(246, 241, 232, 0.5);
    flex-wrap: wrap;
    gap: 16px;
  }
  .footer__legal{
    display: flex;
    gap: 24px;
  }

  /* =========================================================
     Responsive
     ========================================================= */
  @media (max-width: 900px){
    .nav__menu .label{ display: none; }
    .hero__inner{
      grid-template-columns: 1fr;
      padding-top: 120px;
    }
    .hero__floor{
      width: 100%;
      max-width: 200px;
      margin-top: 40px;
    }
    .about__grid,
    .hito__layout,
    .access__grid{
      grid-template-columns: 1fr;
    }
    .about__images{
      order: -1;
    }
    .ways__grid{
      grid-template-columns: 1fr;
    }
    .way-card--feature{
      grid-template-columns: auto 1fr;
      grid-template-rows: auto auto;
      gap: 16px 24px;
      padding: 28px;
    }
    .way-card--feature .way-card__cta{
      grid-column: 1 / -1;
      justify-self: start;
    }
    .sign,
    .sign:nth-child(even){
      grid-template-columns: 1fr;
    }
    .sign:nth-child(even) .sign__media{ order: -1; }
    .footer__inner{
      grid-template-columns: 1fr;
      gap: 40px;
    }
    .hito__images img:nth-child(1),
    .hito__images img:nth-child(4){ transform: none; }
  }
  @media (max-width: 560px){
    .hero__title{ letter-spacing: 0.02em; }
    .hero__floor{ display: none; }
    .way-card{ padding: 32px 24px; }
    .access__info dl{
      grid-template-columns: 1fr;
      column-gap: 0;
    }
    .access__info dt{ padding-bottom: 4px; border-bottom: none; }
    .access__info dd{ border-top: none; padding-top: 0; padding-bottom: 18px; }
    .access__info > div:last-child dt{ border-bottom: none; }
    .footer__bottom{ flex-direction: column; align-items: flex-start; }
  }

  /* =========================================================
     Floor pin（画面右下の現在地インジケーター）
     ========================================================= */
  .floor-pin{
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 50;
    display: flex;
    flex-direction: column;
    gap: 14px;
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
    transition: opacity 0.5s ease, transform 0.5s ease;
  }
  .floor-pin.visible{
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .floor-pin__item{
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .floor-pin__name{
    font-family: var(--serif);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: var(--ink-2);
    opacity: 0;
    transform: translateX(6px);
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
    white-space: nowrap;
  }
  .floor-pin__item.is-active .floor-pin__name{
    opacity: 1;
    transform: translateX(0);
    color: var(--ink);
    font-weight: 600;
  }
  .floor-pin__circle{
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--rule);
    color: var(--ink-2);
    font-family: var(--en-serif);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: background 0.4s ease, color 0.4s ease,
                border-color 0.4s ease, transform 0.4s ease;
  }
  .floor-pin__item.is-active .floor-pin__circle{
    background: var(--koi);
    border-color: var(--koi);
    color: var(--ink);
    transform: scale(1.06);
  }
  .floor-pin__arrow{
    position: absolute;
    right: calc(46px + 12px);
    font-family: var(--en-serif);
    font-size: 18px;
    color: var(--koi-deep);
    pointer-events: none;
    opacity: 0;
    transform: translateX(6px);
    transition: opacity 0.4s ease 0.2s, transform 0.4s ease 0.2s;
  }
  .floor-pin__item.is-active .floor-pin__arrow{
    opacity: 1;
    transform: translateX(0);
  }

  @media (max-width: 600px){
    .floor-pin{
      right: 14px;
      bottom: 14px;
      gap: 10px;
    }
    .floor-pin__circle{
      width: 38px;
      height: 38px;
      font-size: 11px;
    }
    .floor-pin__arrow{
      right: calc(38px + 8px);
      font-size: 14px;
    }
    .floor-pin__name{
      font-size: 10px;
    }
  }

/* ===== 旧 components.css ここから ===== */
/* =========================================================
   components.css — ページ間で共通する UI コンポーネント
   Phase 2 で _index-inline.css / _rental-inline.css から集約
   - Back to Top ボタン
   - Nav ロゴ画像 / Footer ロゴ画像
   - Footer（Emanon風・多列リンク + 関連スペース）
   ========================================================= */

    /* =========================================================
       「先頭へ戻る」ボタン（画面右下固定・円形・スクロールで出現）
       ========================================================= */
    .back-to-top {
      position: fixed;
      bottom: 28px;
      right: 28px;
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--ink);
      color: var(--paper);
      border: 1px solid rgba(232, 181, 58, 0.4);  /* koi の薄い縁 */
      display: grid;
      place-items: center;
      cursor: pointer;
      padding: 0;
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
      transform: translateY(12px) scale(0.85);
      transition:
        opacity 0.35s cubic-bezier(0.25, 0.85, 0.4, 1),
        visibility 0.35s ease,
        transform 0.35s cubic-bezier(0.34, 1.5, 0.64, 1),
        background 0.3s ease,
        color 0.3s ease,
        border-color 0.3s ease,
        box-shadow 0.3s ease;
      z-index: 60;
      box-shadow: 0 10px 28px rgba(42, 36, 29, 0.28);
      -webkit-tap-highlight-color: transparent;
    }

    .back-to-top--visible {
      opacity: 1;
      visibility: visible;
      pointer-events: auto;
      transform: translateY(0) scale(1);
    }

    .back-to-top:hover {
      background: var(--koi);
      color: var(--ink);
      border-color: var(--koi);
      transform: translateY(-3px) scale(1.05);
      box-shadow: 0 14px 32px rgba(232, 181, 58, 0.45);
    }

    .back-to-top:active {
      transform: translateY(-1px) scale(1);
    }

    .back-to-top:focus-visible {
      outline: 3px solid var(--koi);
      outline-offset: 3px;
    }

    .back-to-top svg {
      width: 20px;
      height: 20px;
      display: block;
      transition: transform 0.3s ease;
    }

    .back-to-top:hover svg {
      transform: translateY(-2px);
    }

    /* メニュー開いてる時は非表示（後ろに隠れる） */
    body.menu-open .back-to-top {
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
    }

    @media (max-width: 480px) {
      .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
      }
      .back-to-top svg { width: 18px; height: 18px; }
    }

    @media (prefers-reduced-motion: reduce) {
      .back-to-top {
        transition: opacity 0.2s ease, visibility 0.2s ease, background 0.2s ease;
        transform: none !important;
      }
    }

    /* =========================================================
       Nav ロゴ画像（index.html と同一定義）
       rental.html は常に scrolled 状態（クリーム背景）なのでロゴは黒。
       ========================================================= */
    .nav__logo-img {
      height: 48px;
      width: auto;
      object-fit: contain;
      display: block;
      filter: brightness(0) invert(1);
      transition: filter 0.3s ease;
    }
    .nav.scrolled .nav__logo-img {
      filter: brightness(0);
    }
    @media (max-width: 600px) {
      .nav__logo-img { height: 40px; }
    }

    /* Footer ロゴ画像（index.html と同一定義） */
    .footer__logo-img {
      height: 80px;
      width: auto;
      object-fit: contain;
      display: block;
      filter: brightness(0) invert(1);
    }

    /* =========================================================
       Footer（Emanon風・多列リンク + 関連スペース）
       index.html と同じ定義をこちらにも反映
       ========================================================= */
    .footer__top {
      max-width: 1440px;
      margin: 0 auto;
      padding: 64px var(--gutter, 32px) 48px;
      display: grid;
      grid-template-columns: 1.1fr 2fr;
      gap: 56px;
      align-items: start;
      border-bottom: 1px solid rgba(246, 241, 232, 0.12);
    }
    .footer__brand .logo { display: flex; align-items: center; }
    .footer__tagline {
      font-family: var(--serif);
      font-size: 14px;
      letter-spacing: 0.12em;
      line-height: 1.85;
      color: var(--paper);
      margin: 18px 0 0;
      opacity: 0.92;
    }
    .footer__nav {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px 28px;
    }
    .footer__nav-col {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .footer__nav-col a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-family: var(--serif);
      font-size: 14px;
      letter-spacing: 0.1em;
      color: var(--paper);
      text-decoration: none;
      transition: color 0.2s ease, transform 0.2s ease;
    }
    .footer__nav-col a:hover {
      color: var(--koi);
      transform: translateX(2px);
    }
    .footer__nav-dash {
      display: inline-block;
      width: 12px;
      color: var(--koi);
      font-weight: 600;
    }
    .footer__meta {
      max-width: 1440px;
      margin: 0 auto;
      padding: 36px var(--gutter, 32px);
      display: grid;
      grid-template-columns: 2fr 1fr 1.4fr;
      gap: 40px;
      align-items: center;
    }
    .footer__meta-label {
      font-family: var(--en-serif);
      font-size: 11px;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--koi);
      margin: 0 0 8px;
      opacity: 0.9;
    }
    .footer__meta-text {
      font-size: 12px;
      line-height: 1.85;
      letter-spacing: 0.06em;
      color: var(--paper);
      margin: 0;
      opacity: 0.85;
    }
    .footer__sns { display: flex; gap: 12px; }
    .footer__sns a {
      width: 40px;
      height: 40px;
      border: 1px solid rgba(246, 241, 232, 0.25);
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: var(--paper);
      transition: background 0.2s, border-color 0.2s, color 0.2s;
    }
    .footer__sns a:hover {
      background: var(--koi);
      border-color: var(--koi);
      color: var(--ink);
    }
    .footer__related-card {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 16px;
      border: 1px solid rgba(246, 241, 232, 0.2);
      border-radius: 4px;
      color: var(--paper);
      text-decoration: none;
      transition: all 0.25s ease;
    }
    .footer__related-card:hover {
      background: rgba(232, 181, 58, 0.08);
      border-color: var(--koi);
      transform: translateY(-2px);
    }
    .footer__related-floor {
      font-family: var(--serif);
      font-size: 18px;
      font-weight: 600;
      color: var(--koi);
      line-height: 1;
    }
    .footer__related-name {
      font-family: var(--en-serif);
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.18em;
    }
    .footer__related-desc {
      font-family: var(--en-serif);
      font-style: normal;
      font-size: 10px;
      letter-spacing: 0.2em;
      opacity: 0.7;
      margin-left: auto;
    }
    .footer__bottom {
      max-width: 1440px;
      margin: 0 auto;
      padding: 24px var(--gutter, 32px) 32px;
      border-top: 1px solid rgba(246, 241, 232, 0.12);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 11px;
      letter-spacing: 0.1em;
      color: var(--paper);
      opacity: 0.7;
    }
    @media (max-width: 900px) {
      .footer__top {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .footer__meta {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer__nav { gap: 24px 16px; }
    }
    @media (max-width: 560px) {
      .footer__nav { grid-template-columns: 1fr 1fr; }
    }

/* === Phase 4 追加: Navigation / メニューオーバーレイ（共有ヘッダー） === */
  /* =========================================================
     Navigation
     ========================================================= */
  .nav{
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 50;
    padding: 18px var(--gutter);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease, backdrop-filter 0.3s ease, padding 0.3s ease;
  }
  .nav.scrolled{
    background: rgba(246, 241, 232, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 12px var(--gutter);
    border-bottom: 1px solid var(--rule-soft);
  }
  .nav__logo{
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
  }
  .nav.is-light .nav__logo,
  .nav.is-light .nav__menu{ color: var(--paper); }
  .nav.scrolled .nav__logo,
  .nav.scrolled .nav__menu{ color: var(--ink); }

  .nav__logo svg{ width: 36px; height: 36px; }
  .nav__logo .logo-text{
    font-family: var(--serif);
    font-weight: 600;
    font-size: 17px;
    letter-spacing: 0.18em;
  }
  .nav__logo .logo-en{
    font-family: var(--en-serif);
    font-size: 9px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    opacity: 0.7;
    display: block;
    margin-top: -4px;
  }
  .nav__menu{
    display: flex;
    align-items: center;
    background: transparent;
    border: none;
    padding: 10px;
    cursor: pointer;
    transition: opacity 0.3s ease;
  }
  .nav__menu:hover{
    opacity: 0.7;
  }
  .nav__menu .bars{
    display: inline-flex;
    flex-direction: column;
    gap: 7px;
    width: 28px;
  }
  .nav__menu .bars span{
    display: block;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .nav__menu .bars span:nth-child(1){ width: 28px; }
  .nav__menu .bars span:nth-child(2){ width: 20px; align-self: flex-end; }
  body.menu-open .nav__menu .bars span:nth-child(1){ transform: translateY(5px) rotate(20deg); }
  body.menu-open .nav__menu .bars span:nth-child(2){ transform: translateY(-5px) rotate(-20deg); width: 28px; }

  /* Menu overlay */
  .menu-overlay{
    position: fixed; inset: 0;
    z-index: 49;
    background: var(--ink);
    color: var(--paper);
    transform: translateY(-100%);
    transition: transform 0.6s cubic-bezier(0.7, 0, 0.2, 1);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 100px var(--gutter) 60px;
  }
  body.menu-open .menu-overlay{ transform: translateY(0); }
  .menu-overlay__inner{
    max-width: 1100px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 56px;
    align-items: center;
  }
  .menu-overlay__intro{
    border-right: 1px solid rgba(246,241,232,0.15);
    padding-right: 40px;
  }
  .menu-overlay__intro .label{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 12px;
    letter-spacing: 0.16em;
    color: var(--koi);
    text-transform: uppercase;
    margin: 0 0 14px;
  }
  .menu-overlay__intro h3{
    font-family: var(--serif);
    font-size: clamp(28px, 3.4vw, 36px);
    line-height: 1.5;
    letter-spacing: 0.08em;
    margin: 0 0 24px;
    font-weight: normal;
  }
  .menu-overlay__intro p{
    font-size: 13px;
    line-height: 2;
    color: rgba(246,241,232,0.7);
    margin: 0;
    letter-spacing: 0.05em;
  }
  .menu-overlay nav{
    display: flex;
    flex-direction: column;
  }
  .menu-overlay nav a{
    display: grid;
    grid-template-columns: 40px 1fr auto;
    align-items: baseline;
    gap: 18px;
    padding: 18px 4px;
    border-bottom: 1px solid rgba(246,241,232,0.12);
    transition: padding 0.3s ease, color 0.3s ease;
  }
  .menu-overlay nav a:hover{
    padding-left: 16px;
    color: var(--koi);
  }
  .menu-overlay nav a .num{
    font-family: var(--serif);
    font-size: 14px;
    color: var(--koi);
    opacity: 0.85;
  }
  .menu-overlay nav a .ja{
    font-family: var(--serif);
    font-size: clamp(20px, 2.2vw, 26px);
    letter-spacing: 0.1em;
  }
  .menu-overlay nav a .en{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 12px;
    letter-spacing: 0.12em;
    opacity: 0.5;
    text-transform: uppercase;
  }
  .menu-overlay__foot{
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid rgba(246,241,232,0.12);
    display: flex;
    justify-content: space-between;
    align-items: center;
    grid-column: 1 / -1;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 12px;
    letter-spacing: 0.1em;
    color: rgba(246,241,232,0.6);
  }
  .menu-overlay__socials{
    display: flex;
    gap: 12px;
  }
  .menu-overlay__socials a{
    width: 36px; height: 36px;
    border: 1px solid rgba(246,241,232,0.25);
    border-radius: 50%;
    display: grid; place-items: center;
    padding: 0;
    border-bottom: 1px solid rgba(246,241,232,0.25);
  }
  .menu-overlay__socials a:hover{
    background: var(--koi);
    border-color: var(--koi);
    color: var(--ink);
    padding-left: 0;
  }
  @media (max-width: 760px){
    /* メニュー内容を上揃えにし、上部のナビ（ロゴ）と重ならないようにする */
    .menu-overlay{ justify-content: flex-start; }
    .menu-overlay__inner{
      grid-template-columns: 1fr;
      gap: 32px;
    }
    .menu-overlay__intro{
      border-right: none;
      padding-right: 0;
      border-bottom: 1px solid rgba(246,241,232,0.15);
      padding-bottom: 24px;
    }
  }

/* === Phase 4 追加: Buttons（.btn と variants・共有） === */
  .btn{
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 28px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.1em;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
    border: none;
  }
  .btn--primary{
    background: var(--koi);
    color: var(--ink);
    box-shadow: 0 8px 24px rgba(232, 181, 58, 0.35);
  }
  .btn--primary:hover{
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(232, 181, 58, 0.45);
    background: var(--koi-deep);
  }
  .btn--ghost{
    background: rgba(255,255,255,0.08);
    color: var(--paper);
    border: 1px solid rgba(255,255,255,0.35);
    backdrop-filter: blur(8px);
  }
  .btn--ghost:hover{
    background: rgba(255,255,255,0.18);
    transform: translateY(-2px);
  }
  .btn--outline{
    background: transparent;
    color: var(--ink);
    border: 1px solid var(--ink);
    padding: 14px 26px;
    font-size: 12px;
  }
  .btn--outline:hover{
    background: var(--ink);
    color: var(--paper);
  }
  .btn--dark{
    background: var(--ink);
    color: var(--paper);
  }
  .btn--dark:hover{
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(42, 36, 29, 0.25);
  }

/* === Phase 4 追加: Section primitives（section / eyebrow / title / rule・共有） === */
  /* =========================================================
     Section primitives
     ========================================================= */
  section{
    padding-top: var(--section-y);
    padding-bottom: var(--section-y);
    position: relative;
  }
  .section-eyebrow{
    font-family: var(--en-serif);
    font-style: normal;
    font-size: 13px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--koi-deep);
    margin: 0 0 14px;
    text-align: center;
  }
  .section-title{
    font-family: var(--serif);
    font-size: clamp(26px, 3.6vw, 40px);
    font-weight: 600;
    text-align: center;
    margin: 0 0 14px;
    letter-spacing: 0.12em;
    line-height: 1.5;
  }
  .section-rule{
    width: 40px; height: 1px;
    background: var(--ink);
    margin: 28px auto 56px;
    opacity: 0.5;
  }

/* === Phase 4 追加: Reveal animation（スクロール出現・共有） === */
  /* =========================================================
     Reveal animation
     ========================================================= */
  .reveal{
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 1s ease, transform 1s ease;
  }
  .reveal.in{
    opacity: 1;
    transform: none;
  }
  .reveal.delay-1{ transition-delay: 0.12s; }
  .reveal.delay-2{ transition-delay: 0.24s; }
  .reveal.delay-3{ transition-delay: 0.36s; }