/* =========================================================
   株式会社ひなた工務店 - style.css
   Pure CSS / no framework。配色・フォント・余白は :root のトークンで一元管理する。
   新色を直値で書かず、必要ならトークンを :root に足して命名を揃えること。
   ========================================================= */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
/* overflow-x: hidden は body のみに付ける。html にも付けると、body 側の
   overflow-y が auto に再計算されて html/body が二重のスクロールコンテナ化し、
   スクロール自体がほぼ効かなくなる（結果としてヘッダーの sticky も追従しなく見える）。 */
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { overflow-x: hidden; }
body, h1, h2, h3, h4, p, ul, ol, figure, dl, dd, table, th, td { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { border: none; background: none; cursor: pointer; font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }

/* ---------- Design Tokens ---------- */
:root {
  /* 配色：白＋木目のベース、深い緑を差し色に（制作依頼書の方向性） */
  --c-primary: #2b5a42;          /* 深い緑：ボタン・見出しラベル */
  --c-primary-deep: #1d4330;     /* hover */
  --c-primary-soft: #e8f0ea;     /* 緑のごく淡い背景 */
  --c-accent: #b3814d;           /* 木の色（装飾・罫線。文字には使わない） */
  --c-accent-soft: #f1e4d0;      /* 木の淡い色 */

  --c-bg: #ffffff;
  --c-bg-cream: #f9f4ea;         /* 木目に寄せた生成り */
  --c-text: #2e2a25;
  --c-text-muted: #615a50;       /* 白地・生成り地で4.5:1以上 */
  --c-border: #e7dfd0;
  --c-danger: #b23a2b;
  --c-deep: #1f3a2d;             /* フッター等の濃い面（黒ではなく深緑） */

  /* フォント：丸みのある Zen Maru Gothic で親しみを、本文は Noto Sans JP で読みやすく */
  --f-base: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", system-ui, sans-serif;
  --f-disp: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Noto Sans JP", sans-serif;

  /* レイアウト */
  --container: 1120px;
  --gutter: 24px;
  --header-h: 92px;
  --radius: 14px;
  --radius-pill: 999px;
  --shadow-soft: 0 10px 30px rgba(84,58,28,0.08);
  --shadow-card: 0 24px 60px rgba(84,58,28,0.14);
}

/* ---------- Base ---------- */
html, body {
  font-family: var(--f-base);
  color: var(--c-text);
  background: var(--c-bg);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}
@media (max-width: 768px) {
  :root { --header-h: 64px; }
}

h1, h2, h3 { font-family: var(--f-disp); line-height: 1.45; font-weight: 700; text-wrap: balance; word-break: auto-phrase; }
.nav { gap: 18px; }
a:focus-visible, button:focus-visible, .btn:focus-visible { outline: 3px solid var(--c-accent); outline-offset: 3px; border-radius: 6px; }
.js .fade-in { opacity: 0; transform: translateY(24px); }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding: 88px 0; }
.section--cream { background: var(--c-bg-cream); }
.section__head { text-align: center; max-width: 760px; margin: 0 auto 48px; }
.section__label { display: block; font-family: var(--f-disp); font-size: 13px; letter-spacing: 0.3em; color: var(--c-primary); margin-bottom: 10px; font-weight: 700; }
.section__title { font-size: clamp(22px, 4vw, 30px); font-weight: 600; letter-spacing: 0.06em; }
.section__lead { margin-top: 16px; color: var(--c-text-muted); font-size: 15px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--radius-pill);
  background: var(--c-primary); color: #fff; font-weight: 700;
  letter-spacing: 0.08em; transition: background 0.2s, transform 0.2s;
}
.btn:hover { background: var(--c-primary-deep); transform: translateY(-1px); }

/* ---------- Header ---------- */
.hdr {
  position: sticky; top: 0; z-index: 100;
  border-bottom: 1px solid var(--c-border);
}
/* 背景のすりガラス効果は ::before に分離する。
   .hdr 自身に backdrop-filter / filter を持たせると、その要素がモバイル用ドロワー
   (.nav / position:fixed) の「包含ブロック」になり、ドロワーがビューポートではなく
   ヘッダーの高さ(数十px)に閉じ込められてレイアウトが壊れるため。 */
.hdr::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: rgba(255,255,255,0.92);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  backdrop-filter: saturate(180%) blur(8px);
}
.hdr__inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.hdr__logo { display: inline-flex; align-items: center; gap: 10px; font-family: var(--f-disp); font-weight: 700; font-size: 19px; letter-spacing: 0.06em; color: var(--c-primary-deep); }
.hdr__logo-mark { width: 34px; height: 34px; flex-shrink: 0; }
.hdr__logo small { display: block; font-size: 10px; letter-spacing: 0.22em; color: var(--c-text-muted); font-weight: 500; line-height: 1.2; }
.nav { display: flex; align-items: center; gap: 22px; }
.nav > a { font-size: 14px; letter-spacing: 0.04em; transition: color 0.2s; }
.nav > a:hover { color: var(--c-primary); }
.nav__sns { display: none; } /* PC ヘッダーではアイコンを hdr__actions 側に出す想定 */
.hdr__actions { display: flex; align-items: center; gap: 14px; }
.hdr__sns { display: inline-flex; }
.sns-icon { width: 22px; height: 22px; }
.sns-symbols { position: absolute; width: 0; height: 0; overflow: hidden; }
.hdr__cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px; border-radius: var(--radius-pill);
  background: var(--c-primary); color: #fff; font-size: 14px; font-weight: 600;
  transition: background 0.2s;
}
.hdr__cta:hover { background: var(--c-primary-deep); }

/* Burger */
/* z-index はドロワー(.nav, z-index:95)より高くする。.hdr__burger は .hdr のローカルな
   スタッキングコンテキストに属するため、指定がないと z-index:auto 扱いとなり、
   ドロワーを開いた際に自分自身のボタン(×アイコン)がドロワーの下に隠れてしまう。 */
.hdr__burger { display: none; width: 40px; height: 40px; position: relative; z-index: 96; }
.hdr__burger span {
  position: absolute; left: 9px; right: 9px; height: 2px; background: var(--c-text);
  transition: transform 0.3s, opacity 0.2s;
}
.hdr__burger span:nth-child(1) { top: 13px; }
.hdr__burger span:nth-child(2) { top: 19px; }
.hdr__burger span:nth-child(3) { top: 25px; }
.hdr__burger.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hdr__burger.is-open span:nth-child(2) { opacity: 0; }
.hdr__burger.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav-backdrop {
  position: fixed; inset: 0; background: rgba(31,58,45,0.45);
  opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s; z-index: 90;
}
.nav-backdrop.is-open { opacity: 1; visibility: visible; }

/* ---------- Page hero（サブページ共通の見出し帯） ---------- */
.page-hero { background: var(--c-primary-soft); padding: 64px 0; text-align: center; }
.page-hero__label { display: block; font-family: var(--f-disp); letter-spacing: 0.3em; color: var(--c-primary); font-size: 13px; text-transform: uppercase; margin-bottom: 10px; }
.page-hero__title { font-size: clamp(24px, 5vw, 34px); letter-spacing: 0.08em; }
.page-hero__lead { margin-top: 14px; color: var(--c-text-muted); font-size: 15px; }

/* ---------- News（新着情報・アコーディオン / news.js と対応） ---------- */
.news__list { max-width: 860px; margin: 0 auto; border-top: 1px solid var(--c-border); }
.news__item { border-bottom: 1px solid var(--c-border); }
.news__head {
  width: 100%; display: flex; align-items: center; gap: 14px;
  padding: 22px 8px; text-align: left;
}
.news__date { font-family: var(--f-disp); color: var(--c-primary); font-size: 14px; letter-spacing: 0.06em; flex-shrink: 0; }
.news__cat {
  font-size: 11px; letter-spacing: 0.08em; color: var(--c-text-muted);
  border: 1px solid var(--c-border); border-radius: var(--radius-pill);
  padding: 3px 12px; flex-shrink: 0;
}
.news__title { flex: 1; font-size: 15px; font-weight: 500; }
.news__toggle { width: 12px; height: 12px; position: relative; flex-shrink: 0; }
.news__toggle::before, .news__toggle::after { content: ""; position: absolute; background: var(--c-text-muted); transition: transform 0.3s; }
.news__toggle::before { top: 5px; left: 0; right: 0; height: 2px; }
.news__toggle::after { left: 5px; top: 0; bottom: 0; width: 2px; }
.news__item.is-open .news__toggle::after { transform: scaleY(0); }
.news__body { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.news__item.is-open .news__body { max-height: 600px; }
.news__body-inner { padding: 0 8px 24px; color: var(--c-text-muted); font-size: 14px; }
.news__link { display: inline-flex; gap: 6px; margin-top: 12px; color: var(--c-primary); font-weight: 600; }
.news__empty { text-align: center; color: var(--c-text-muted); padding: 40px 0; }

/* ---------- Cards / CTA ---------- */
.cta-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; max-width: 880px; margin: 0 auto; }
.cta-card { display: block; padding: 32px 28px; background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); box-shadow: var(--shadow-soft); transition: transform 0.2s, box-shadow 0.2s; text-align: center; }
.cta-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); }
.cta-card__label { font-family: var(--f-disp); letter-spacing: 0.2em; color: var(--c-primary); font-size: 12px; text-transform: uppercase; }
.cta-card__title { margin: 8px 0 10px; font-size: 19px; }
.cta-card__desc { color: var(--c-text-muted); font-size: 14px; }
.cta-card__btn { display: inline-block; margin-top: 16px; color: var(--c-primary); font-weight: 600; }

/* ---------- Form（Web3Forms / contact.js と対応） ---------- */
.form { max-width: 720px; margin: 0 auto; }
.form__intro { font-size: 13px; color: var(--c-text-muted); margin-bottom: 24px; }
.form__intro strong { color: var(--c-danger); }
.form__field { margin-bottom: 22px; }
.form__label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 8px; }
.form__required { font-size: 11px; color: #fff; background: var(--c-danger); border-radius: 3px; padding: 2px 7px; margin-left: 6px; }
.form__optional { font-size: 11px; color: var(--c-text-muted); border: 1px solid var(--c-border); border-radius: 3px; padding: 2px 7px; margin-left: 6px; }
.form__input, .form__select, .form__textarea {
  width: 100%; padding: 13px 14px; border: 1px solid var(--c-border); border-radius: var(--radius);
  background: #fff; font-size: 15px; font-family: inherit; outline: none; transition: border-color 0.2s, box-shadow 0.2s;
}
.form__input:focus, .form__select:focus, .form__textarea:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px var(--c-primary-soft); }
.form__textarea { min-height: 160px; resize: vertical; }
.form__hint { display: block; margin-top: 6px; font-size: 12px; color: var(--c-text-muted); }
.form__check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; cursor: pointer; }
.form__check input { margin-top: 5px; }
.form__honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form__submit { width: 100%; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 16px; border-radius: var(--radius-pill); background: var(--c-primary); color: #fff; font-weight: 600; letter-spacing: 0.1em; transition: background 0.2s; }
.form__submit:hover { background: var(--c-primary-deep); }
.form__submit:disabled { opacity: 0.6; cursor: default; }
.form__success { max-width: 720px; margin: 0 auto 24px; padding: 28px; border: 1px solid var(--c-primary); border-radius: var(--radius); background: var(--c-primary-soft); text-align: center; }
.form__error { padding: 14px; border: 1px solid var(--c-danger); border-radius: var(--radius); background: #fdecea; color: var(--c-danger); font-size: 14px; margin-bottom: 20px; }
.form__radio { display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px; border: 1px solid var(--c-border); border-radius: var(--radius-pill); cursor: pointer; margin: 0 8px 8px 0; }
.form__radio.is-checked { border-color: var(--c-primary); background: var(--c-primary-soft); }

/* ---------- FAQ ---------- */
.faq__item { border-bottom: 1px solid var(--c-border); }
.faq__q { width: 100%; text-align: left; padding: 20px 8px; font-weight: 600; }
.faq__a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; color: var(--c-text-muted); font-size: 14px; }
.faq__item.is-open .faq__a { max-height: 500px; padding: 0 8px 20px; }

/* ---------- Footer ---------- */
.ftr { background: var(--c-deep); color: #e8efe9; padding: 64px 0 32px; }
.ftr__inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; }
.ftr__about, .ftr__address { font-size: 13px; color: #c6d3c9; margin-top: 14px; line-height: 1.9; }
.ftr__tel a { font-family: var(--f-disp); font-size: 18px; letter-spacing: 0.06em; margin-top: 10px; display: inline-block; }
.ftr__sns { display: flex; gap: 14px; margin-top: 16px; }
.ftr__sns .sns-icon { width: 26px; height: 26px; }
.ftr__heading { font-family: var(--f-disp); letter-spacing: 0.2em; font-size: 13px; color: #fff; margin-bottom: 16px; text-transform: uppercase; }
.ftr__links { display: flex; flex-direction: column; gap: 10px; }
.ftr__links a { font-size: 14px; color: #d3ddd5; transition: color 0.2s; }
.ftr__links a:hover { color: #fff; }
.ftr__bottom { border-top: 1px solid rgba(255,255,255,0.18); margin-top: 48px; padding-top: 24px; text-align: center; }
.ftr__copy { font-size: 12px; color: #b5c4b9; letter-spacing: 0.06em; }

/* ---------- Mobile sticky CTA bar ---------- */
.mobile-cta { display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 80; background: rgba(255,255,255,0.96); border-top: 1px solid var(--c-border); backdrop-filter: blur(8px); }
.mobile-cta__inner { display: flex; }
.mobile-cta__btn { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 9px 4px; font-size: 10px; color: var(--c-text); }
.mobile-cta__btn--primary { background: var(--c-primary); color: #fff; }
.mobile-cta__btn-icon svg { width: 22px; height: 22px; }

/* ---------- Home: Hero ---------- */
.hero { position: relative; min-height: min(86vh, 720px); display: flex; align-items: flex-end; overflow: hidden; background: var(--c-deep); }
.hero__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(31,58,45,0) 35%, rgba(31,58,45,0.55) 100%); }
.hero__inner { position: relative; z-index: 1; width: 100%; padding-bottom: 56px; }
.hero__card { max-width: 600px; background: rgba(255,255,255,0.95); border-radius: 22px; padding: 36px 36px 32px; box-shadow: var(--shadow-card); }
.hero__eyebrow { font-family: var(--f-disp); font-weight: 700; font-size: 13px; letter-spacing: 0.16em; color: var(--c-primary); }
.hero h1 { font-size: clamp(25px, 3.6vw, 36px); letter-spacing: 0.04em; margin: 10px 0 14px; }
.hero h1 em { font-style: normal; background: linear-gradient(transparent 62%, var(--c-accent-soft) 62%); }
.hero__lead { font-size: 15px; color: var(--c-text-muted); }
.hero__btns { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.btn--ghost { background: #fff; color: var(--c-primary); border: 2px solid var(--c-primary); }
.btn--ghost:hover { background: var(--c-primary-soft); }
.btn--wood { background: var(--c-accent-soft); color: var(--c-primary-deep); }
.btn--wood:hover { background: #ead5b7; }
.btn--lg { padding: 17px 34px; font-size: 16px; }

/* ---------- Home: 見学会バンド ---------- */
.tour-band { background: var(--c-primary); color: #fff; }
.tour-band__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 26px; }
.tour-band__tag { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 0.12em; background: var(--c-accent-soft); color: var(--c-primary-deep); border-radius: var(--radius-pill); padding: 3px 14px; }
.tour-band__title { font-family: var(--f-disp); font-size: clamp(18px, 2.6vw, 24px); font-weight: 700; margin-top: 8px; }
.tour-band__sub { font-size: 14px; color: #dbe8df; margin-top: 2px; }
.tour-band .btn { background: #fff; color: var(--c-primary-deep); flex-shrink: 0; }
.tour-band .btn:hover { background: var(--c-accent-soft); }

/* ---------- Home: 強み（写真大きく・交互） ---------- */
.pillar { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center; }
.pillar + .pillar { margin-top: 88px; }
.pillar--rev .pillar__photo { order: 2; }
.pillar__photo { position: relative; border-radius: 26px; overflow: hidden; box-shadow: var(--shadow-card); }
.pillar__photo img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.pillar__no { font-family: var(--f-disp); font-weight: 700; font-size: 14px; letter-spacing: 0.14em; color: var(--c-primary); }
.pillar__no b { display: block; font-size: 56px; line-height: 1; color: var(--c-accent); letter-spacing: 0; }
.pillar__title { font-size: clamp(22px, 3.2vw, 30px); margin: 8px 0 14px; letter-spacing: 0.03em; }
.pillar__text { color: var(--c-text-muted); }
.pillar__fig { display: inline-flex; align-items: baseline; gap: 6px; margin-top: 18px; padding: 10px 20px; background: var(--c-primary-soft); border-radius: var(--radius); font-family: var(--f-disp); font-weight: 700; color: var(--c-primary-deep); }
.pillar__fig strong { font-size: 30px; }
.note { font-size: 12px; color: var(--c-text-muted); margin-top: 12px; }

/* ---------- Home: 年間の棟数 ---------- */
.scale { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 760px; margin: 0 auto; }
.scale__item { text-align: center; background: #fff; border: 1px solid var(--c-border); border-radius: 20px; padding: 28px 16px; }
.scale__num { font-family: var(--f-disp); font-weight: 700; font-size: clamp(30px, 6vw, 44px); color: var(--c-primary); line-height: 1.2; }
.scale__num small { font-size: 16px; margin-left: 4px; }
.scale__label { font-size: 14px; color: var(--c-text-muted); margin-top: 4px; }

/* ---------- Home: 流れ ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; }
.step { position: relative; background: #fff; border-radius: 20px; border: 1px solid var(--c-border); padding: 28px 24px 24px; box-shadow: var(--shadow-soft); }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: var(--f-disp); font-weight: 700; font-size: 34px; color: var(--c-accent); line-height: 1; display: block; margin-bottom: 8px; }
.step h3 { font-size: 18px; margin-bottom: 6px; }
.step p { font-size: 14px; color: var(--c-text-muted); }

/* ---------- Home: リフォーム / 採用 split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; border-radius: 28px; overflow: hidden; background: #fff; box-shadow: var(--shadow-card); }
.split--rev .split__photo { order: 2; }
.split__photo img { width: 100%; height: 100%; min-height: 320px; object-fit: cover; }
.split__body { padding: 48px 44px; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; }
.split__body h2 { font-size: clamp(22px, 3vw, 28px); margin: 6px 0 14px; }
.split__body p { color: var(--c-text-muted); }
.split__body .btn { margin-top: 24px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.chips li { font-size: 13px; background: var(--c-primary-soft); color: var(--c-primary-deep); border-radius: var(--radius-pill); padding: 4px 14px; font-weight: 500; }
.split + .split { margin-top: 40px; }

/* ---------- Company ---------- */
.dl { max-width: 720px; margin: 0 auto; background: #fff; border-radius: 20px; border: 1px solid var(--c-border); overflow: hidden; }
.dl__row { display: grid; grid-template-columns: 160px 1fr; border-bottom: 1px solid var(--c-border); }
.dl__row:last-child { border-bottom: 0; }
.dl dt { background: var(--c-bg-cream); padding: 16px 20px; font-weight: 700; font-size: 14px; }
.dl dd { padding: 16px 20px; font-size: 15px; }

/* ---------- Bottom CTA ---------- */
.cta-end { background: var(--c-primary-soft); text-align: center; }
.cta-end__tel { margin-top: 20px; font-size: 14px; color: var(--c-text-muted); }
.cta-end__tel a { font-family: var(--f-disp); font-weight: 700; font-size: 20px; color: var(--c-primary-deep); margin-left: 6px; }

/* ---------- Sub pages ---------- */
.page-hero--photo { position: relative; background: var(--c-deep); color: #fff; padding: 96px 0 80px; overflow: hidden; }
.page-hero--photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.5; }
.page-hero--photo .container { position: relative; }
.page-hero--photo .page-hero__label, .page-hero--photo .page-hero__lead { color: #fff; }
.prose { max-width: 720px; margin: 0 auto; }
.prose h2 { font-size: 20px; margin: 36px 0 10px; }
.prose p, .prose li { color: var(--c-text-muted); font-size: 15px; }
.prose ul { list-style: disc; padding-left: 1.4em; }
.tbd { display: inline-block; background: var(--c-accent-soft); color: var(--c-primary-deep); border-radius: 6px; padding: 1px 10px; font-size: 13px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card { background: #fff; border: 1px solid var(--c-border); border-radius: 20px; padding: 28px; box-shadow: var(--shadow-soft); }
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { font-size: 14px; color: var(--c-text-muted); }
.form__date-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

@media (max-width: 900px) {
  .pillar, .split { grid-template-columns: 1fr; gap: 24px; }
  .split { gap: 0; }
  .pillar--rev .pillar__photo, .split--rev .split__photo { order: 0; }
  .pillar + .pillar { margin-top: 56px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .split__body { padding: 32px 26px; }
  .split__photo img { min-height: 220px; max-height: 280px; }
  .tour-band__inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 600px) {
  .hero { min-height: 640px; }
  .hero__card { padding: 26px 22px 24px; border-radius: 18px; }
  .hero__inner { padding-bottom: 24px; }
  .steps, .grid-2, .form__date-pair { grid-template-columns: 1fr; }
  .dl__row { grid-template-columns: 1fr; }
  .dl dt { padding: 10px 20px; }
  .scale { gap: 12px; }
  .hdr__logo { font-size: 16px; }
  .btn--lg, .hero__btns .btn { width: 100%; justify-content: center; }
}

/* ---------- Round1 改善：ヒーロー全面・強み2カラム・数字帯・フロー横線・動き ---------- */
.hero { min-height: min(92vh, 780px); }
.hero::after { background: linear-gradient(180deg, rgba(31,58,45,0.25) 0%, rgba(31,58,45,0.15) 30%, rgba(31,58,45,0.72) 100%); }
.hero__img { animation: hero-zoom 18s ease-out both; transform-origin: 60% 50%; }
@keyframes hero-zoom { from { transform: scale(1.0); } to { transform: scale(1.07); } }
.hero__inner { padding-bottom: 72px; }
.hero__copy { max-width: 820px; color: #fff; text-shadow: 0 2px 18px rgba(20,36,28,0.45); }
.hero__eyebrow { color: #fff; font-size: 14px; }
.hero h1 { font-size: clamp(34px, 6.4vw, 72px); line-height: 1.3; letter-spacing: 0.04em; margin: 14px 0 20px; text-wrap: nowrap; }
.hero__line { display: block; animation: line-up 0.9s cubic-bezier(.2,.7,.2,1) both; }
.hero__line:nth-child(2) { animation-delay: 0.14s; }
@keyframes line-up { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }
.hero h1 em { background: linear-gradient(transparent 70%, rgba(179,129,77,0.75) 70%); color: #fff; }
.hero__lead { color: #fff; font-size: 16px; max-width: 560px; animation: line-up 0.9s 0.3s cubic-bezier(.2,.7,.2,1) both; }
.hero__btns { align-items: center; gap: 22px; text-shadow: none; }
.hero__link { color: #fff; font-weight: 700; border-bottom: 2px solid rgba(255,255,255,0.7); padding-bottom: 2px; text-shadow: 0 1px 10px rgba(20,36,28,0.5); }
.hero__link:hover { border-color: #fff; }
.btn .arrow { display: inline-block; transition: transform 0.25s; }
.btn:hover .arrow { transform: translateX(5px); }
.hero .btn { background: #fff; color: var(--c-primary-deep); }
.hero .btn:hover { background: var(--c-accent-soft); }

.strengths { display: grid; grid-template-columns: 340px 1fr; gap: 72px; align-items: start; }
.strengths__head { position: sticky; top: calc(var(--header-h) + 32px); }
.strengths__head .section__title { text-align: left; font-size: clamp(26px, 3.4vw, 38px); margin: 6px 0 16px; }
.strengths__head .section__lead { text-align: left; }
.strengths__head .section__label { display: block; }
.strengths__list .pillar { grid-template-columns: 1fr; gap: 24px; }
.strengths__list .pillar + .pillar { margin-top: 72px; }
.strengths__list .pillar--rev .pillar__photo { order: 0; }
.pillar__photo img { transition: transform 1.4s cubic-bezier(.2,.7,.2,1); }
.js .pillar__photo img { transform: scale(1.08); }
.pillar.is-visible .pillar__photo img { transform: scale(1); }

#scale { padding: 140px 0; text-align: left; background: var(--c-deep); color: #fff; }
.scale__title { font-size: clamp(26px, 4vw, 44px); color: #fff; max-width: 14em; }
.scale__lead { color: #d3ddd5; margin-top: 14px; max-width: 34em; }
.scale { max-width: none; margin: 56px 0 0; gap: 0; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid rgba(255,255,255,0.25); }
.scale__item { background: transparent; border: 0; border-radius: 0; text-align: left; padding: 32px 0 0; }
.scale__item + .scale__item { padding-left: 32px; border-left: 1px solid rgba(255,255,255,0.25); }
.scale__num { color: #fff; font-size: clamp(54px, 10vw, 128px); line-height: 1.05; }
.scale__num small { font-size: clamp(18px, 2.4vw, 28px); color: var(--c-accent-soft); }
.scale__label { color: #d3ddd5; font-size: 15px; }
#scale .note { color: #c6d3c9; margin-top: 28px; }

.steps { grid-template-columns: repeat(5, 1fr); gap: 0; position: relative; }
.steps::before { content: ""; position: absolute; left: 0; right: 0; top: 18px; height: 2px; background: var(--c-accent-soft); }
.step { background: transparent; border: 0; box-shadow: none; padding: 0 18px 0 0; }
.step::before { width: 38px; height: 38px; display: grid; place-items: center; font-size: 15px; color: #fff; background: var(--c-primary); border-radius: 50%; position: relative; margin-bottom: 18px; }
.step h3 { font-size: 17px; }
#flow .section__head { text-align: left; margin-left: 0; max-width: none; }
#flow .section__title { font-size: clamp(26px, 3.6vw, 38px); }
#news .section__head, #company .section__head { text-align: left; margin-left: 0; }
#company { padding: 72px 0; }
#flow { padding: 120px 0; }

.page-hero--photo img { opacity: 0.68; }
.page-hero--photo .page-hero__title, .page-hero--photo .page-hero__label, .page-hero--photo .page-hero__lead { text-shadow: 0 2px 16px rgba(20,36,28,0.55); }
.page-hero--photo .page-hero__title { color: #fff; }

@media (max-width: 1080px) {
  .hdr .nav:not(.is-open) { box-shadow: none; visibility: hidden; transition: transform 0.35s ease, visibility 0s 0.35s; }
  .hdr .nav.is-open { box-shadow: -10px 0 40px rgba(31,58,45,0.25); visibility: visible; }
  .strengths { grid-template-columns: 1fr; gap: 36px; }
  .strengths__head { position: static; }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
  .steps::before { display: none; }
}
@media (max-width: 600px) {
  .hero h1 { font-size: clamp(28px, 8.4vw, 36px); text-wrap: balance; }
  .steps { grid-template-columns: 1fr; }
  #scale { padding: 88px 0; }
  .scale__item + .scale__item { padding-left: 16px; }
  #flow { padding: 72px 0; }
}
@media (prefers-reduced-motion: reduce) {
  .hero__img, .hero__line, .hero__lead { animation: none !important; }
  .js .pillar__photo img { transform: none; }
}

/* ---------- Round2 改善：写真トーン統一・動きの役割差・タイムライン・タップ領域 ---------- */
.nav { gap: 26px; margin-left: 28px; }
.pillar__photo img, .split__photo img { filter: saturate(0.85) sepia(0.12) contrast(1.03); }
.pillar__photo::after { content: ""; position: absolute; inset: 0; background: rgba(179,129,77,0.10); pointer-events: none; }
.strengths__list .pillar:nth-child(1) .pillar__photo img { aspect-ratio: 4 / 5; }
.strengths__list .pillar:nth-child(2) .pillar__photo img { aspect-ratio: 16 / 10; }
.strengths__list .pillar:nth-child(3) .pillar__photo img { aspect-ratio: 1 / 1; }
.split__photo { overflow: hidden; }
.split__photo img { transition: transform 0.8s cubic-bezier(.2,.7,.2,1); }
.split:hover .split__photo img { transform: scale(1.04); }
.split__photo img[src*="hero-01"] { object-position: 88% 60%; }
.js .pillar__photo { clip-path: inset(12% 0 0 0 round 26px); transition: clip-path 1.1s cubic-bezier(.2,.7,.2,1); }
.js .pillar.is-visible .pillar__photo { clip-path: inset(0 0 0 0 round 26px); }
.news__head { transition: background 0.2s; }
.news__head:hover { background: var(--c-primary-soft); }
.hero__link { background: linear-gradient(#fff, #fff) left bottom / 0 2px no-repeat; border-bottom-color: rgba(255,255,255,0.45); transition: background-size 0.35s; }
.hero__link:hover { background-size: 100% 2px; }
.step__dummy { display: none; }

/* フロー：縦タイムライン */
.steps { grid-template-columns: 1fr; max-width: 680px; margin-left: 0; gap: 0; }
.steps::before { left: 18px; right: auto; top: 18px; bottom: 40px; width: 2px; height: auto; transform-origin: top; transition: transform 1.4s cubic-bezier(.2,.7,.2,1); }
.js .steps::before { transform: scaleY(0); }
.steps.is-visible::before { transform: scaleY(1); }
.step { display: grid; grid-template-columns: 38px 1fr; column-gap: 22px; padding: 0 0 30px; }
.step::before { grid-row: 1 / 3; margin-bottom: 0; }
.step h3 { align-self: center; font-size: 18px; }
.step p { grid-column: 2; max-width: 34em; font-size: 15px; }
.js .step.fade-in:nth-child(2) { transition-delay: 0.1s; }
.js .step.fade-in:nth-child(3) { transition-delay: 0.2s; }
.js .step.fade-in:nth-child(4) { transition-delay: 0.3s; }
.js .step.fade-in:nth-child(5) { transition-delay: 0.4s; }

/* 数字：左から出る */
.js .scale__num { clip-path: inset(0 100% 0 0); transition: clip-path 1s cubic-bezier(.2,.7,.2,1) 0.2s; }
.scale.is-visible .scale__num { clip-path: inset(0 0 0 0); }

.hdr__burger { width: 44px; height: 44px; }
.mobile-cta__btn { min-height: 52px; justify-content: center; font-size: 13px; font-weight: 700; }
.tour-band { scroll-margin-top: 80px; }
@media (max-width: 1080px) { .nav { margin-left: 0; gap: 4px; } .steps { grid-template-columns: 1fr; } .steps::before { display: block; } }
@media (max-width: 768px) { body { padding-bottom: 68px; } .tour-band__inner { padding-bottom: 32px; } }
@media (max-width: 600px) { .steps { max-width: none; } }
@media (prefers-reduced-motion: reduce) {
  .js .pillar__photo, .js .scale__num { clip-path: none !important; }
  .js .steps::before { transform: none; }
}

/* ---------- Fade-in（main.js / news.js と対応） ---------- */
.fade-in { transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .hdr__burger { display: block; }
  .hdr__cta { display: none; }
  .nav {
    position: fixed; top: 0; right: 0; bottom: 0; width: min(78vw, 320px);
    flex-direction: column; align-items: flex-start; gap: 4px;
    background: #fff; padding: calc(var(--header-h) + 16px) 28px 28px;
    transform: translateX(100%); transition: transform 0.35s ease; z-index: 95;
    box-shadow: -10px 0 40px rgba(0,0,0,0.15); overflow-y: auto;
  }
  .nav.is-open { transform: translateX(0); }
  .nav > a { width: 100%; padding: 14px 0; border-bottom: 1px solid var(--c-border); font-size: 15px; }
  .nav__sns { display: flex; gap: 16px; margin-top: 20px; }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .ftr__inner { grid-template-columns: 1fr; gap: 32px; }
  .mobile-cta { display: block; }
  body { padding-bottom: 60px; } /* mobile-cta の高さ分 */
  .news__head { flex-wrap: wrap; gap: 8px 12px; }
  .news__title { flex-basis: 100%; }
}

/* ---------- Accessibility：動きを抑える設定への配慮 ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  .fade-in { opacity: 1; transform: none; }
}