/* =========================================================
   株式会社サンプル建設（架空）— 共通スタイル
   見た目はイメージ1（濃紺＋空色、斜めに切った写真）、構成はイメージ2（コンセプト→施工事例→採用→会社について→会社概要→お問い合わせ）。
   固有の装飾は建築図面の「寸法線」だけ。
   ブレークポイント 600 / 900 / 1100
   ========================================================= */

:root {
  --navy: #13294b;       /* 文字・ボタン・ロゴ */
  --navy-2: #1d3a66;
  --blue: #2b6cb0;       /* リンク・寸法線 */
  --sky: #eaf2f9;        /* 面 */
  --sky-2: #f5f9fc;
  --ink: #1b2733;
  --muted: #56636f;
  --line: #d5e0ea;
  --white: #fff;

  --ff-display: "Zen Old Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --ff-body: "IBM Plex Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;

  --container: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --section: clamp(72px, 9vw, 120px);
  --header-h: 76px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0; background: var(--white); color: var(--ink);
  font-family: var(--ff-body); font-size: 16px; line-height: 1.9; letter-spacing: .02em;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--blue); }
h1, h2, h3, p, ul, dl, dd, figure { margin: 0; }
ul { padding: 0; list-style: none; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

.container { width: min(var(--container), 100% - var(--gutter) * 2); margin-inline: auto; }
.section { padding: var(--section) 0; }
.note { margin-top: 20px; font-size: 13px; color: var(--muted); }
.skip-link { position: absolute; left: 8px; top: -60px; z-index: 100; padding: 8px 16px; background: var(--navy); color: #fff; }
.skip-link:focus { top: 8px; }

/* ---------- デモ表示 ---------- */
.demo-bar { background: var(--navy); color: #dbe5f1; font-size: 12.5px; line-height: 1.6; }
.demo-bar__inner {
  width: min(var(--container), 100% - var(--gutter) * 2); margin-inline: auto; padding: 7px 0;
  display: flex; flex-wrap: wrap; gap: 4px 16px; justify-content: space-between; align-items: center;
}
.demo-bar__link { color: #fff; white-space: nowrap; }

/* ---------- ボタン・リンク ---------- */
.btn {
  --h: 50px;
  display: inline-flex; align-items: center; justify-content: center; gap: .6em;
  min-height: var(--h); padding: 0 1.8em; border: 1px solid transparent; border-radius: 2px;
  font-size: 15px; font-weight: 500; letter-spacing: .06em; text-decoration: none; line-height: 1.4;
  transition: background-color .2s, color .2s, border-color .2s;
}
.btn::after {
  /* 矢印の代わりに、右端に止め線のある短い線（寸法線と同じ形） */
  content: ""; flex: none; width: 18px; height: 7px; border-right: 1px solid currentColor;
  background: linear-gradient(currentColor, currentColor) center / 100% 1px no-repeat;
}
.btn--lg { --h: 58px; font-size: 16px; padding: 0 2.2em; }
.btn--navy { background: var(--navy); color: #fff; }
.btn--navy:hover { background: var(--navy-2); }
.btn--line { background: var(--white); color: var(--navy); border-color: var(--navy); }
.btn--line:hover { background: var(--navy); color: #fff; }
.btn--white { background: #fff; color: var(--navy); }
.btn--white:hover { background: var(--sky); }
.text-link { font-size: 14.5px; font-weight: 500; color: var(--navy); white-space: nowrap; text-underline-offset: 5px; }
.text-link:hover { color: var(--blue); }

/* ---------- 寸法線（両端に止め線を持つ細線。数字の上に使う。見出し・ボタンも同じ形） ---------- */
.dim {
  position: relative; display: block; height: 9px; min-width: 48px;
  background: linear-gradient(var(--blue), var(--blue)) center / 100% 1px no-repeat;
}
.dim::before, .dim::after { content: ""; position: absolute; top: 0; width: 1px; height: 9px; background: var(--blue); }
.dim::before { left: 0; }
.dim::after { right: 0; }

/* ---------- 見出し：細い英字＋日本語＋短い寸法線（中央揃えが基本） ---------- */
.title { margin-bottom: 44px; text-align: center; }
.title__en { font-family: "Jost", var(--ff-body); font-weight: 300; font-size: clamp(36px, 4.4vw, 54px); line-height: 1.1; letter-spacing: .08em; color: var(--blue); }
.title__ja { margin-top: 8px; font-family: var(--ff-display); font-weight: 700; font-size: 16px; letter-spacing: .12em; color: var(--navy); }
.title::after {
  /* 寸法線（.dim と同じ形）を見出しの下に */
  content: ""; display: block; width: 64px; height: 9px; margin: 14px auto 0;
  background: linear-gradient(var(--blue), var(--blue)) center / 100% 1px no-repeat;
  border-left: 1px solid var(--blue); border-right: 1px solid var(--blue);
}
.title--left { text-align: left; margin-bottom: 24px; }
.title--left::after { margin-left: 0; }
.title--light .title__en { color: #9cc3ea; }
.title--light .title__ja { color: #fff; }
.title--light::after { background-image: linear-gradient(#9cc3ea, #9cc3ea); border-color: #9cc3ea; }
.text-link--light { color: #fff; }
.text-link--light:hover { color: #9cc3ea; }

/* ---------- ヘッダー ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .96); border-bottom: 1px solid var(--line); }
.site-header__inner {
  width: min(1320px, 100% - var(--gutter) * 2); margin-inline: auto; height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--navy); text-decoration: none; }
.brand__mark { width: 40px; height: 40px; flex: none; }
.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__name { font-family: var(--ff-display); font-weight: 700; font-size: 20px; letter-spacing: .08em; }
.brand__sub { margin-top: 4px; font-size: 9.5px; letter-spacing: .24em; color: var(--muted); }
.gnav { display: flex; align-items: center; gap: 36px; }
.gnav__list { display: flex; gap: 32px; }
.gnav__list a { color: var(--ink); font-size: 14.5px; font-weight: 500; text-decoration: none; padding: 8px 0; }
.gnav__list a:hover { color: var(--blue); }
.gnav__cta { --h: 46px; font-size: 14px; }
.menu-toggle { display: none; }

@media (max-width: 1023px) {
  :root { --header-h: 64px; }
  .brand__name { font-size: 17px; }
  .brand__mark { width: 34px; height: 34px; }
  .menu-toggle {
    display: inline-flex; flex-direction: column; align-items: center; gap: 4px;
    width: 52px; padding: 6px 0; border: 0; background: none; color: var(--navy); font: inherit; cursor: pointer;
  }
  .menu-toggle__bars, .menu-toggle__bars::before, .menu-toggle__bars::after {
    display: block; width: 24px; height: 2px; background: currentColor; transition: transform .25s var(--ease), opacity .2s;
  }
  .menu-toggle__bars { position: relative; margin: 8px 0 6px; }
  .menu-toggle__bars::before, .menu-toggle__bars::after { content: ""; position: absolute; left: 0; }
  .menu-toggle__bars::before { top: -7px; }
  .menu-toggle__bars::after { top: 7px; }
  .menu-toggle__label { font-size: 10px; line-height: 1; letter-spacing: .1em; }
  .menu-toggle[aria-expanded="true"] .menu-toggle__bars { background: transparent; }
  .menu-toggle[aria-expanded="true"] .menu-toggle__bars::before { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-toggle__bars::after { transform: translateY(-7px) rotate(-45deg); }
  .gnav {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 20px; padding: 8px var(--gutter) 28px;
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 20px 30px -24px rgba(19, 41, 75, .4);
  }
  .gnav__list { flex-direction: column; gap: 0; }
  .gnav__list a { display: block; padding: 15px 2px; border-bottom: 1px solid var(--line); font-size: 16px; }
  .js .gnav { display: none; }
  .js .site-header.is-open .gnav { display: flex; }
  /* JS が動かないときはメニューを常に開いたまま表示する */
  .no-js .site-header { position: relative; }
  .no-js .gnav { position: static; box-shadow: none; }
  .no-js .site-header__inner { flex-wrap: wrap; height: auto; padding-top: 12px; }
  .no-js .menu-toggle { display: none; }
}

/* ---------- FV ---------- */
/* 左：街の空撮（空の部分に見出し）。右：斜めに切った写真パネル2枚。参考画像の構図を写真の比率に合わせて再構成 */
.hero { position: relative; overflow: hidden; min-height: clamp(560px, calc(100svh - var(--header-h) - 34px), 760px); background: #fff; }
.hero__city { position: absolute; inset: 0 30% 0 0; }
/* 上6割が空、地平線から下が街並みになる切り出し。見出しは空の中に置く */
.hero__city img { width: 100%; height: 100%; object-fit: cover; object-position: 30% 50%; }
.hero__panels { position: absolute; top: 0; bottom: 0; right: 0; width: 42%; }
.hero__panel { position: absolute; top: 0; bottom: 0; overflow: hidden; background: var(--navy); }
.hero__panel img { width: 100%; height: 100%; object-fit: cover; }
.hero__panel--a { left: 0; width: 58%; clip-path: polygon(30% 0, 100% 0, 70% 100%, 0 100%); }
.hero__panel--b { right: 0; width: 58%; clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%); }
/* 2枚の間は少しだけ離し、白い地が斜めの切れ目として見える */
.hero__inner { position: relative; z-index: 2; width: min(var(--container), 100% - var(--gutter) * 2); margin-inline: auto; display: flex; align-items: center; min-height: inherit; padding: 48px 0; }
/* 見出しは高さの中央（2026-10-21 ユーザー指示）。後ろに白いもやを敷いて、空にも街並みにも負けないようにする */
.hero__copy { position: relative; isolation: isolate; }
.hero__copy::before {
  content: ""; position: absolute; z-index: -1; inset: -110px -160px -110px -220px;
  background: radial-gradient(closest-side, rgba(255, 255, 255, .94) 0%, rgba(255, 255, 255, .88) 55%, rgba(255, 255, 255, .5) 80%, rgba(255, 255, 255, 0));
  filter: blur(10px); pointer-events: none;
}
.hero__copy { max-width: none; }
/* FV の文字は見出し1つだけ（2026-10-21 ユーザー指示）。補足文・ボタンは置かない */
.hero__title {
  font-family: var(--ff-display); font-weight: 700; color: var(--navy);
  font-size: clamp(40px, 5vw, 72px); line-height: 1.45; letter-spacing: .04em;
}

@media (prefers-reduced-motion: no-preference) {
  /* 一度だけ：写真パネルが右から順に現れる */
  .js .hero__panel { animation: panel-in 1s var(--ease) backwards; }
  .js .hero__panel--a { animation-delay: .15s; }
  .js .hero__panel--b { animation-delay: .35s; }
}
@keyframes panel-in { from { opacity: 0; transform: translateX(40px); } }

@media (max-width: 1100px) {
  .hero__city { inset: 0 26% 0 0; }
  .hero__panels { width: 38%; }
}
/* スマホ・タブレットは PC とは別の構成（2026-10-21 ユーザー指示「PC表示とは違っていいからスマホ用に」）：
   縦長に切り出した空撮1枚を全面に敷き、空の部分に見出しを縦書きで置く。斜めの写真パネルは出さない。
   見出しの左に、図面の寸法線を縦向きに引く（このサイト固有の装飾） */
@media (max-width: 899px) {
  .hero { min-height: clamp(520px, calc(100svh - var(--header-h) - 60px), 820px); }
  .hero__city { inset: 0; }
  .hero__city img { object-position: 50% 40%; }
  .hero__panels { display: none; }
  .hero__inner { align-items: flex-start; justify-content: flex-end; padding: clamp(28px, 8vw, 56px) 0 0; }
  .hero__copy { display: flex; flex-direction: row-reverse; align-items: flex-start; gap: 14px; }
  .hero__copy::before {
    inset: -50px -40px -60px -50px;
    background: radial-gradient(closest-side, rgba(255, 255, 255, .78), rgba(255, 255, 255, .5) 60%, rgba(255, 255, 255, 0));
  }
  .hero__title {
    writing-mode: vertical-rl; font-size: clamp(30px, 8.2vw, 46px); line-height: 1.6; letter-spacing: .14em;
  }
  .hero__copy::after {
    content: ""; flex: none; align-self: stretch; width: 9px; margin-top: 4px;
    background: linear-gradient(var(--navy), var(--navy)) center / 1px 100% no-repeat;
    border-top: 1px solid var(--navy); border-bottom: 1px solid var(--navy);
  }
}

/* ---------- コンセプト：左に文、右に斜めに切った縦長タイル4枚（濃紺の膜の上に白文字） ---------- */
.concept { background: var(--sky); }
.concept__inner { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: 48px 48px; align-items: center; }
.concept__lead { margin: 4px 0 20px; font-family: var(--ff-display); font-weight: 700; font-size: clamp(26px, 2.8vw, 34px); line-height: 1.55; color: var(--navy); letter-spacing: .06em; }
.concept__text > p:last-child { font-size: 15px; color: var(--muted); }
/* 4枚を同じ大きさにし、斜めの量（--slant）だけ隣と重ねて縁をぴったり合わせる。
   切れ目は各タイルの左縁に同じ幅の白い斜線を描いて作る（重なり量で隙間を作ると、端数の丸めで1か所だけ広く見えるため） */
.strength__list { --slant: 44px; --seam: 4px; display: flex; }
.tile {
  position: relative; flex: 0 0 calc((100% + var(--slant) * 3) / 4); aspect-ratio: 2 / 3; overflow: hidden;
  clip-path: polygon(var(--slant) 0, 100% 0, calc(100% - var(--slant)) 100%, 0 100%);
}
.tile + .tile { margin-left: calc(var(--slant) * -1); }
.tile + .tile::before {
  content: ""; position: absolute; inset: 0; z-index: 2; background: var(--sky); /* 切れ目は地色と同じ色 */
  clip-path: polygon(var(--slant) 0, calc(var(--slant) + var(--seam)) 0, var(--seam) 100%, 0 100%);
}
.tile img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.tile::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(19, 41, 75, .05) 25%, rgba(19, 41, 75, .86) 78%); }
.tile__body { position: absolute; z-index: 1; left: 9%; right: 21%; bottom: 20px; color: #fff; }
.tile h3 { font-family: var(--ff-display); font-size: 17px; line-height: 1.5; letter-spacing: .04em; }
.tile p { margin-top: 6px; font-size: 12.5px; line-height: 1.75; color: #dfe8f3; }
@media (max-width: 1100px) {
  .concept__inner { grid-template-columns: 1fr; }
}
@media (max-width: 699px) {
  /* スマホは斜めをやめ、2列の縦長タイルにする（斜めだと文字の幅が足りない） */
  .strength__list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  .tile, .tile + .tile { margin-left: 0; clip-path: none; aspect-ratio: 4 / 5; }
  .tile + .tile::before { display: none; }
  .tile__body { left: 14px; right: 14px; bottom: 14px; }
  .tile h3 { font-size: 16px; }
  .tile p { display: none; }
}

/* ---------- 事業内容：左に濃紺のパネル（右端を斜めに）、右に写真4点 ---------- */
.business { background: #fff; padding: clamp(64px, 8vw, 104px) 0; }
.business__inner { width: min(1320px, 100% - var(--gutter) * 2); margin-inline: auto; display: grid; grid-template-columns: minmax(0, 330px) minmax(0, 1fr); align-items: stretch; }
.business__panel {
  position: relative; z-index: 1; background: var(--navy); color: #fff; padding: 44px 64px 44px 40px; margin-right: -40px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 40px) 100%, 0 100%);
  display: flex; flex-direction: column; justify-content: center;
}
.business__lead { margin: 6px 0 28px; font-family: var(--ff-display); font-weight: 700; font-size: clamp(24px, 2.4vw, 30px); line-height: 1.6; letter-spacing: .06em; }
.business__list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; padding-left: 52px; }
.biz { background: #fff; border: 1px solid var(--line); }
.biz img { aspect-ratio: 4 / 3; width: 100%; object-fit: cover; }
.biz__title { padding: 16px 18px 0; font-family: var(--ff-display); font-size: 17px; line-height: 1.5; color: var(--navy); letter-spacing: .04em; }
.biz__for { padding: 4px 18px 18px; font-size: 12.5px; color: var(--muted); }
@media (max-width: 1100px) {
  /* 1列になる幅では、濃紺の面の中に見出しと写真カードをまとめる（2026-10-21 ユーザー指示） */
  .business__inner { grid-template-columns: 1fr; width: min(var(--container), 100% - var(--gutter) * 2); background: var(--navy); padding: 32px; }
  .business__panel { margin: 0 0 24px; clip-path: none; padding: 0; background: none; }
  .business__list { padding-left: 0; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .biz { border: 0; }
}
@media (max-width: 479px) { .business__inner { padding: 24px 16px; } .biz__title { font-size: 15.5px; padding: 12px 12px 0; } .biz__for { padding: 2px 12px 14px; font-size: 12px; } }

/* ---------- 施工事例：2×2 の大きな写真 ---------- */
.works { background: var(--sky); }
.works__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 44px 32px; }
.work img { aspect-ratio: 3 / 2; width: 100%; object-fit: cover; }
.work__meta { margin-top: 14px; display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--muted); }
.work__tag { padding: 0 10px; border: 1px solid var(--blue); color: var(--blue); font-size: 12px; letter-spacing: .06em; }
.work__title { margin-top: 6px; font-size: 17px; font-weight: 700; color: var(--ink); line-height: 1.6; }
.works__foot { margin-top: 36px; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; }
.works__foot .note { margin: 0; }
@media (max-width: 699px) { .works__list { grid-template-columns: 1fr; } }

/* ---------- 採用：写真帯（濃紺の膜）とボタン ---------- */
.recruit { padding-bottom: var(--section); background: #fff; }
.recruit__band { position: relative; min-height: 380px; display: grid; place-items: center; overflow: hidden; background: var(--navy); }
.recruit__band img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .38; }
.recruit__band-body { position: relative; text-align: center; color: #fff; padding: 56px var(--gutter); }
.recruit__msg { font-family: var(--ff-display); font-size: clamp(19px, 2.2vw, 26px); line-height: 1.8; letter-spacing: .06em; }
.recruit__more { margin-top: 48px; text-align: center; }
/* 募集要項はトップに置かない（2026-10-21 ユーザー指示）。写真帯とボタンだけ */

/* ---------- お客様の声（架空の掲載例） ---------- */
.voices { background: #fff; }
.voices__list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.voice { display: flex; flex-direction: column; gap: 14px; background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--blue); padding: 24px 26px; }
.voice__text { font-size: 15px; line-height: 1.9; }
.voice__who { margin-top: auto; font-size: 12.5px; color: var(--blue); letter-spacing: .06em; }
@media (max-width: 899px) { .voices__list { grid-template-columns: 1fr; gap: 12px; } }
@media (max-width: 599px) { .recruit__band { min-height: 300px; } .recruit__msg br { display: none; } .recruit__more .btn { width: 100%; } }

/* ---------- 会社について：代表メッセージと数字 ---------- */
/* FV の直後に置く。代表者名は出さず、白地（2026-10-21 ユーザー指示）。
   以降のセクションは 白 → 空色 → 白 … と交互にする（About 白／Concept 空色／Business 白／Works 空色／Voice 白／お知らせ 空色） */
/* トップでは見出しを本文の真上に置き、見出しの上端を左の写真の上端にそろえる（2026-10-21 ユーザー指示） */
.about__inner { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 40px 64px; align-items: start; }
.about__text .title__en { line-height: 1; margin-top: -2px; }
.about__photo img { aspect-ratio: 9 / 8; width: 100%; object-fit: cover; }
.about__lead { margin-bottom: 20px; font-family: var(--ff-display); font-weight: 700; font-size: clamp(26px, 3vw, 38px); line-height: 1.55; color: var(--navy); letter-spacing: .06em; }
.about__text > p + p { margin-top: 12px; }
.about__text > p:not(.about__lead) { font-size: 15px; }
.numbers { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 64px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.num { padding: 26px 24px 30px; }
.num + .num { border-left: 1px solid var(--line); }
.num dt { font-size: 13.5px; color: var(--muted); letter-spacing: .06em; }
.num dd { margin-top: 14px; display: inline-flex; flex-wrap: wrap; align-items: baseline; gap: 0 4px; color: var(--navy); font-size: 15px; font-weight: 500; }
.num .dim { flex: 0 0 100%; margin-bottom: 8px; }
.num b { font-family: var(--ff-display); font-size: clamp(36px, 3.8vw, 50px); line-height: 1.1; font-weight: 700; }
@media (max-width: 899px) {
  .about__inner { grid-template-columns: 1fr; }
  .about__photo img { aspect-ratio: 16 / 9; }
  .numbers { grid-template-columns: 1fr 1fr; }
  .num:nth-child(3) { border-left: 0; }
  .num:nth-child(n + 3) { border-top: 1px solid var(--line); }
}
@media (max-width: 399px) { .num { padding: 22px 14px 24px; } }

/* ---------- お知らせ ---------- */
.news-block { padding: clamp(56px, 7vw, 88px) 0; background: var(--sky); }
.news-block__inner { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 24px 48px; align-items: start; }
.news-block__title { font-family: var(--ff-display); font-size: 24px; color: var(--navy); letter-spacing: .08em; }
.news__list li { display: grid; grid-template-columns: auto auto minmax(0, 1fr); gap: 6px 16px; align-items: baseline; padding: 16px 0; border-bottom: 1px solid #cfdbe7; font-size: 14.5px; }
.news__list li:first-child { padding-top: 0; }
.news__list time { color: var(--muted); font-size: 13.5px; letter-spacing: .04em; }
.news__cat { justify-self: start; padding: 0 8px; background: #fff; color: var(--navy); font-size: 12px; }
@media (max-width: 699px) {
  .news-block__inner { grid-template-columns: 1fr; }
  .news__list li { grid-template-columns: auto auto; }
  .news__title { grid-column: 1 / -1; }
}

/* ---------- お問い合わせ（写真の上に濃紺の膜）・フッター（濃紺） ---------- */
.contact-band { position: relative; overflow: hidden; background: var(--navy); color: #fff; padding: clamp(64px, 8vw, 104px) 0; text-align: center; }
.contact-band__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .22; }
.contact-band__inner { position: relative; }
.contact-band__lead { color: #d5e0ee; font-size: 15px; }
.contact-band__actions { margin-top: 32px; display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 20px 40px; }
.contact-band__tel { display: grid; grid-template-columns: auto auto; column-gap: 12px; align-items: baseline; text-align: left; }
.contact-band__tel span { font-size: 13px; color: #d5e0ee; }
.contact-band__tel b { font-family: var(--ff-display); font-size: 32px; letter-spacing: .06em; }
.contact-band__tel small { grid-column: 1 / -1; font-size: 12px; color: #b9c7da; }

.site-footer { background: #0c1d36; color: #c9d6e6; padding: 56px 0 28px; font-size: 14px; }
.site-footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 28px 48px; padding-bottom: 32px; border-bottom: 1px solid rgba(255, 255, 255, .14); }
.brand--footer { margin-bottom: 12px; color: #fff; }
.brand--footer .brand__mark { width: 34px; height: 34px; }
.brand--footer .brand__mark path:nth-child(2) { fill: #fff; }
.brand--footer .brand__mark path:nth-child(3) { fill: #0c1d36; }
.brand--footer .brand__name { font-size: 18px; }
.site-footer address { font-style: normal; font-size: 13.5px; line-height: 1.9; }
.site-footer__nav ul { display: grid; grid-template-columns: repeat(3, auto); gap: 8px 40px; }
.site-footer__nav a { color: #fff; text-decoration: none; }
.site-footer__nav a:hover { text-decoration: underline; }
.site-footer__demo { padding-top: 20px; font-size: 12.5px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; }
.site-footer__demo a { color: #c9d6e6; }
@media (max-width: 599px) { .site-footer__nav ul { grid-template-columns: repeat(2, auto); } }

/* =========================================================
   下層ページ（会社案内・事業内容・施工事例・採用情報・お問い合わせ）
   トップの部品（.title・.btn・寸法線・白／空色の交互）をそのまま使う
   ========================================================= */
.gnav__list a[aria-current="page"] { color: var(--blue); box-shadow: inset 0 -2px 0 var(--blue); }
.section--sky { background: var(--sky); }
.center-cta { margin-top: 44px; text-align: center; }
.sub-heading { margin-bottom: 14px; font-family: var(--ff-display); font-size: 20px; color: var(--navy); letter-spacing: .06em; line-height: 1.5; }
* + .sub-heading { margin-top: 36px; }

/* ---------- 見出し帯：写真に濃紺の膜、左に英字＋h1 ---------- */
.page-head { position: relative; overflow: hidden; background: var(--navy); color: #fff; }
.page-head__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .42; }
.page-head__inner { position: relative; padding: clamp(64px, 9vw, 112px) 0 clamp(56px, 7vw, 88px); }
.page-head .title { margin-bottom: 18px; }
.page-head .title__ja { font-size: clamp(22px, 2.6vw, 30px); }
.page-head__lead { font-size: 15px; color: #e3ebf5; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 4px 0; padding: 14px 0; list-style: none; font-size: 13px; color: var(--muted); }
.breadcrumb li + li::before { content: "／"; margin: 0 .6em; color: #a9b6c3; }
.breadcrumb a { color: var(--muted); }

/* ---------- 表（会社概要・募集要項） ---------- */
.table { background: #fff; border-top: 2px solid var(--navy); }
.table div { display: grid; grid-template-columns: 11em minmax(0, 1fr); gap: 12px 24px; padding: 16px 24px; border-bottom: 1px solid var(--line); font-size: 15px; }
.table dt { font-weight: 500; color: var(--navy); }
@media (max-width: 599px) { .table div { grid-template-columns: 1fr; gap: 2px; padding: 14px 16px; } }

/* ---------- 沿革：左に年、寸法線のように縦の線でつなぐ ---------- */
.history { list-style: none; padding: 0; max-width: 860px; margin-inline: auto; }
.history li { position: relative; display: grid; grid-template-columns: 7em minmax(0, 1fr); gap: 24px; padding: 0 0 28px 28px; border-left: 1px solid var(--blue); }
.history li:last-child { padding-bottom: 0; }
.history li::before { content: ""; position: absolute; left: -5px; top: 9px; width: 9px; height: 1px; background: var(--blue); }
.history__year { font-family: var(--ff-display); font-weight: 700; font-size: 18px; color: var(--navy); }
@media (max-width: 599px) { .history li { grid-template-columns: 1fr; gap: 2px; } }

/* ---------- 所在地 ---------- */
.access { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 0; background: #fff; }
.access img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 3 / 2; }
.access__text { padding: clamp(24px, 4vw, 48px); display: flex; flex-direction: column; justify-content: center; gap: 6px; }
.access__name { font-family: var(--ff-display); font-size: 19px; color: var(--navy); }
@media (max-width: 799px) { .access { grid-template-columns: 1fr; } }

/* ---------- 事業内容：写真と本文の横組み（左右交互） ---------- */
.biz-rows { display: grid; gap: 56px; }
.biz-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px 56px; align-items: center; }
.biz-row img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.biz-row--rev img { order: 2; }
.biz-row__title { margin-bottom: 14px; font-family: var(--ff-display); font-size: clamp(22px, 2.4vw, 28px); color: var(--navy); letter-spacing: .05em; line-height: 1.5; }
.biz-row__body > p { font-size: 15px; }
.check-list { margin-top: 18px; display: grid; gap: 8px; }
.check-list li { position: relative; padding-left: 28px; font-size: 14.5px; }
.check-list li::before { content: ""; position: absolute; left: 0; top: .8em; width: 16px; height: 7px; border-right: 1px solid var(--blue); background: linear-gradient(var(--blue), var(--blue)) center / 100% 1px no-repeat; }
@media (max-width: 799px) { .biz-row { grid-template-columns: 1fr; } .biz-row--rev img { order: 0; } }

/* ---------- 流れ（順番がある工程なので番号を付ける） ---------- */
.flow { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; counter-reset: none; }
.flow--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.flow li { background: #fff; padding: 24px 24px 26px; border-top: 3px solid var(--navy); }
.flow__no { font-family: "Jost", var(--ff-body); font-weight: 300; font-size: 34px; line-height: 1; color: var(--blue); }
.flow h3 { margin: 10px 0 6px; font-family: var(--ff-display); font-size: 18px; color: var(--navy); }
.flow p { font-size: 14px; color: var(--muted); line-height: 1.8; }
@media (max-width: 899px) { .flow, .flow--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 499px) { .flow, .flow--4 { grid-template-columns: 1fr; } }

/* ---------- 施工事例：大きな注目事例1件（写真に濃紺のパネルを重ねる）＋その他の事例を3列のカードで。
   事業内容の「写真と本文の左右交互」とは別の見せ方にする（2026-10-21 ユーザー指示） ---------- */
.feature { position: relative; }
.feature__img { width: 78%; aspect-ratio: 16 / 9; object-fit: cover; }
.feature__panel {
  position: absolute; right: 0; top: 50%; transform: translateY(-50%); width: min(460px, 44%);
  background: var(--navy); color: #fff; padding: 40px 40px 36px 56px;
  clip-path: polygon(32px 0, 100% 0, 100% 100%, 0 100%);
}
.feature__label { font-family: "Jost", var(--ff-body); font-weight: 300; font-size: 15px; letter-spacing: .16em; color: #9cc3ea; }
.feature .work__meta { color: #c9d6e6; margin-top: 10px; }
.work__tag--light { border-color: #9cc3ea; color: #9cc3ea; }
.feature__title { margin: 10px 0 14px; font-family: var(--ff-display); font-size: clamp(22px, 2.4vw, 28px); line-height: 1.55; letter-spacing: .04em; }
.feature__panel > p:not(.feature__label):not(.work__meta) { font-size: 14.5px; color: #e3ebf5; }
.feature__spec { margin-top: 18px; display: grid; gap: 6px; font-size: 13.5px; }
.feature__spec div { display: grid; grid-template-columns: 6em 1fr; gap: 12px; padding-top: 6px; border-top: 1px solid rgba(255, 255, 255, .18); }
.feature__spec dt { color: #9cc3ea; }
.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.case { background: #fff; display: flex; flex-direction: column; }
.case img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.case__body { padding: 18px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.case .work__meta { margin-top: 0; }
.case__title { margin: 10px 0 8px; font-family: var(--ff-display); font-size: 18px; line-height: 1.6; color: var(--navy); letter-spacing: .03em; }
.case__text { font-size: 14px; color: var(--muted); line-height: 1.8; }
.case__spec { margin-top: auto; padding-top: 14px; font-size: 12.5px; color: var(--blue); }
@media (max-width: 999px) {
  .feature__img { width: 100%; }
  .feature__panel { position: relative; top: auto; transform: none; width: auto; margin: -56px 0 0 auto; max-width: 92%; padding: 28px 28px 28px 44px; }
  .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 599px) {
  .feature__panel { max-width: none; margin: 0; clip-path: none; padding: 24px 20px; }
  .feature__title br { display: none; }
  .case-grid { grid-template-columns: 1fr; }
}

/* ---------- 採用 ---------- */
.recruit-msg { max-width: 760px; text-align: center; }
.recruit-msg p { font-size: 15px; margin-top: 12px; }
.jobs { display: grid; gap: 10px; }
.job { background: #fff; }
.job summary {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 24px; cursor: pointer; list-style: none;
  background: var(--navy); color: #fff; font-weight: 500;
}
.job summary::-webkit-details-marker { display: none; }
.job summary::after { content: ""; width: 12px; height: 12px; border-right: 1px solid #fff; border-bottom: 1px solid #fff; transform: rotate(45deg) translateY(-3px); transition: transform .2s; }
.job[open] summary::after { transform: rotate(-135deg) translateY(-3px); }
.job summary:hover { background: var(--navy-2); }
.table--job { border-top: 0; }
.env { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); }
.env li { padding: 28px 28px 30px 0; border-bottom: 1px solid var(--line); }
.env li:nth-child(odd) { padding-right: 40px; border-right: 1px solid var(--line); }
.env li:nth-child(even) { padding-left: 40px; }
.env h3 { margin-bottom: 8px; font-family: var(--ff-display); font-size: 19px; color: var(--navy); }
.env p { font-size: 14.5px; color: var(--muted); }
@media (max-width: 699px) {
  .env { grid-template-columns: 1fr; }
  .env li, .env li:nth-child(odd), .env li:nth-child(even) { padding: 22px 0; border-right: 0; }
}

/* ---------- お問い合わせ（フォームは送信しない） ---------- */
.contact { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: 40px 64px; align-items: start; }
.contact__side p { font-size: 14.5px; }
.contact__tel { font-family: var(--ff-display); font-size: 32px !important; color: var(--navy); letter-spacing: .06em; line-height: 1.3; }
.form { background: var(--sky); padding: clamp(24px, 4vw, 44px); }
.field { display: grid; gap: 6px; margin-bottom: 20px; }
.field label { font-size: 14.5px; font-weight: 500; color: var(--navy); }
.req { display: inline-block; margin-left: 6px; padding: 0 6px; background: var(--navy); color: #fff; font-size: 11px; font-weight: 500; line-height: 1.7; vertical-align: 1px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid #b9c8d8; border-radius: 0; background: #fff;
  font: inherit; font-size: 16px; color: var(--ink);
}
.field textarea { resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--blue); outline-offset: 0; border-color: var(--blue); }
.field [aria-invalid="true"] { border-color: #b3261e; }
.field--check { grid-template-columns: auto 1fr; align-items: center; gap: 10px; }
.field--check input { width: 20px; height: 20px; }
.form__error { margin-bottom: 16px; padding: 12px 16px; background: #fff; border-left: 3px solid #b3261e; color: #8c1d18; font-size: 14px; }
.form__submit { width: 100%; }
.form__demo { margin-top: 16px; padding: 14px 16px; background: #fff; border-left: 3px solid var(--blue); font-size: 14px; }
@media (max-width: 899px) { .contact { grid-template-columns: 1fr; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}