/* ============================================================
   株式会社巧誠建設 — 総合建設業コーポレート
   構造署名: 施工実績タイルモザイク・ヒーロー / 上部横ナビ / 用途別タブ実績 / 信頼の大数字
   えんじ #8a2b3a × 白 × 薄グレー。左右対称の安定レイアウト。ダーク全面は使わない。
   Noto Serif JP（格の見出し）× Noto Sans JP（本文・数字は可読サンセリフ厳守）× Jost（英字・数字）
   ============================================================ */

:root{
  /* えんじ（palette role vars。C案パレット切替はこの3変数＋--accent-lineを上書き） */
  --accent:      #8a2b3a;
  --accent-dark: #5f1c28;
  --accent-soft: #f3e7ea;
  --accent-line: #c98a97; /* 中間トーンの飾り罫（palette extrasで色相追従） */

  /* 中立色（palette切替でも不変） */
  --ink:        #1d2129;
  --ink-soft:   #2a2f3a;
  --sub:        #59626f;
  --line:       #e3e6ec;
  --line-strong:#cdd2db;
  --bg:         #ffffff;
  --bg-soft:    #f5f6f8;
  --bg-soft2:   #eceff3;

  --f-sans:  "Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",system-ui,sans-serif;
  --f-serif: "Noto Serif JP","Hiragino Mincho ProN","Yu Mincho",serif;
  --f-en:    "Jost","Noto Sans JP",sans-serif;

  --maxw:   1160px;
  --head-h: 76px;
  --trans:  cubic-bezier(.2,.7,.2,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--f-sans);color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.9;letter-spacing:.04em;
  -webkit-font-smoothing:antialiased;padding-top:var(--head-h);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:opacity .3s var(--trans),color .3s var(--trans)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,4vw,48px)}

/* ============ 上部ヘッダー（横ナビ・PC/SP共通の構造署名） ============ */
.header{
  position:fixed;inset:0 0 auto 0;z-index:100;height:var(--head-h);
  background:rgba(255,255,255,.94);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  max-width:var(--maxw);margin:0 auto;height:100%;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 clamp(18px,4vw,48px);gap:20px;
}
.brand{display:flex;align-items:baseline;gap:12px;min-width:0}
.brand-ja{font-family:var(--f-serif);font-weight:600;font-size:clamp(1.02rem,1.5vw,1.2rem);letter-spacing:.12em;white-space:nowrap;color:var(--ink)}
.brand-en{font-family:var(--f-en);font-size:.62rem;letter-spacing:.28em;color:var(--accent);text-transform:uppercase;white-space:nowrap}
.brand .logo-img{height:40px;width:auto;max-width:100%}
.nav-list{display:flex;align-items:center;gap:clamp(18px,2.2vw,34px);list-style:none}
.nav-list a{
  font-size:.9rem;font-weight:500;letter-spacing:.08em;white-space:nowrap;color:var(--ink-soft);
  position:relative;padding:6px 0;
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--trans);
}
.nav-list a:hover{color:var(--accent)}
.nav-list a.active::after,.nav-list a:hover::after{transform:scaleX(1)}
/* CTAピル。字送りは末尾にも付くので右に偏る→左paddingを右+3pxで補正（セレクタは a.nav-reservation で詳細度を確保） */
.nav-list a.nav-reservation{
  background:var(--accent);color:#fff;font-weight:600;letter-spacing:.1em;
  padding:10px 13px 10px 16px;border-radius:2px;transition:background .3s var(--trans);
}
.nav-list a.nav-reservation::after{display:none}
.nav-list a.nav-reservation:hover{background:var(--accent-dark);opacity:1;color:#fff}
.hamburger{display:none;flex-direction:column;gap:6px;background:none;border:0;cursor:pointer;padding:8px}
.hamburger span{width:26px;height:2px;background:var(--ink);transition:.3s var(--trans)}
.hamburger.active span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* ============ ヒーロー（施工実績タイルモザイク＋中央白帯） ============ */
.hero{
  position:relative;overflow:hidden;isolation:isolate;
  min-height:clamp(600px,90vh,880px);
  display:flex;align-items:center;justify-content:center;
  padding:40px clamp(20px,4vw,48px);
}
.hero-mosaic{
  position:absolute;inset:0;z-index:0;display:grid;gap:6px;
  grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);
  background:var(--ink);
}
.hero-tile{background-size:cover;background-position:center;background-repeat:no-repeat}
.hero-tile:nth-child(1){grid-column:1/3;grid-row:1/3}
.hero-tile:nth-child(2){grid-column:3/4;grid-row:1/2}
.hero-tile:nth-child(3){grid-column:4/5;grid-row:1/2}
.hero-tile:nth-child(4){grid-column:3/5;grid-row:2/3}
.hero-tile:nth-child(5){grid-column:1/2;grid-row:3/5}
.hero-tile:nth-child(6){grid-column:2/4;grid-row:3/4}
.hero-tile:nth-child(7){grid-column:4/5;grid-row:3/5}
.hero-tile:nth-child(8){grid-column:2/4;grid-row:4/5}
.hero-scrim{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(20,24,33,.24),rgba(20,24,33,.30))}
.hero-panel{
  position:relative;z-index:2;background:#fff;max-width:min(640px,88vw);text-align:center;
  padding:clamp(34px,5vw,62px) clamp(28px,5vw,66px);
  border-top:3px solid var(--accent);
  box-shadow:0 34px 90px rgba(20,24,33,.30);
}
.hero-eyebrow{
  font-family:var(--f-en);font-size:.8rem;font-weight:500;letter-spacing:.26em;
  color:var(--accent);text-transform:uppercase;margin-bottom:22px;
}
.hero-title{
  font-family:var(--f-serif);font-weight:600;color:var(--ink);
  font-size:clamp(1.8rem,4.2vw,2.9rem);line-height:1.5;letter-spacing:.08em;
  word-break:auto-phrase;
}
.hero-lead{
  margin:24px auto 0;max-width:34em;font-size:.94rem;line-height:2.1;color:var(--sub);letter-spacing:.05em;
}
.hero-panel .btn{margin-top:30px}

/* ============ 見出し共通 ============ */
.section{padding:clamp(70px,10vw,130px) 0;position:relative}
.section-alt{background:var(--bg-soft)}
.sec-head{max-width:760px;margin:0 auto clamp(40px,6vw,64px);text-align:center}
.sec-head.is-left{text-align:left;margin-left:0}
.sec-label{
  display:inline-flex;align-items:center;gap:12px;
  font-family:var(--f-en);font-size:.82rem;font-weight:600;letter-spacing:.24em;
  color:var(--accent);text-transform:uppercase;margin-bottom:18px;
}
.sec-label::before,.sec-label::after{content:"";width:26px;height:2px;background:var(--accent-line)}
.sec-head.is-left .sec-label::after{display:none}
.sec-title{
  font-family:var(--f-serif);font-weight:600;color:var(--ink);
  font-size:clamp(1.5rem,3.2vw,2.3rem);line-height:1.6;letter-spacing:.09em;word-break:auto-phrase;
}
.sec-title em{font-style:normal;color:var(--accent)}
.sec-lead{margin:22px auto 0;max-width:52ch;font-size:.95rem;line-height:2.05;color:var(--sub);letter-spacing:.04em}
.sec-head.is-left .sec-lead{margin-left:0}

/* ============ お知らせ ============ */
.news-strip{background:var(--bg);border-bottom:1px solid var(--line)}
.news-inner{
  max-width:var(--maxw);margin:0 auto;padding:24px clamp(20px,4vw,48px);
  display:flex;align-items:baseline;gap:clamp(18px,3vw,44px);
}
.news-label{
  font-family:var(--f-en);font-size:.82rem;font-weight:600;letter-spacing:.22em;
  color:var(--accent);text-transform:uppercase;white-space:nowrap;
}
.news-list{list-style:none;flex:1;min-width:0}
.news-list li{
  display:flex;align-items:baseline;gap:16px;padding:8px 0;
  border-bottom:1px dotted var(--line);font-size:.9rem;
}
.news-list li:last-child{border-bottom:0}
.news-date{font-family:var(--f-en);color:var(--sub);font-size:.82rem;letter-spacing:.06em;white-space:nowrap}
.news-cat{
  font-size:.68rem;font-weight:600;letter-spacing:.1em;color:#fff;background:var(--accent);
  padding:3px 10px;border-radius:2px;white-space:nowrap;flex-shrink:0;
}
.news-text{color:var(--ink-soft);letter-spacing:.03em;min-width:0}

/* ============ 私たちの仕事（理念＋写真） ============ */
.philo-grid{display:grid;grid-template-columns:1fr 1.02fr;gap:clamp(36px,5vw,80px);align-items:center}
.philo-body .sec-label::after{display:none}
.philo-title{
  font-family:var(--f-serif);font-weight:600;font-size:clamp(1.5rem,3vw,2.2rem);
  line-height:1.55;letter-spacing:.09em;color:var(--ink);margin-bottom:24px;word-break:auto-phrase;
}
.philo-title em{font-style:normal;color:var(--accent)}
.philo-lead{font-size:.95rem;line-height:2.15;color:var(--sub);letter-spacing:.04em;margin-bottom:30px}
.philo-points{list-style:none;display:grid;gap:18px}
.philo-point{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start}
.philo-point::before{content:"";width:10px;height:10px;margin-top:9px;background:var(--accent);transform:rotate(45deg)}
.philo-point-title{font-weight:700;font-size:.98rem;letter-spacing:.05em;color:var(--ink);margin-bottom:2px}
.philo-point-desc{font-size:.88rem;line-height:1.95;color:var(--sub)}
.philo-media{position:relative;padding:0 clamp(18px,3vw,40px) clamp(40px,5vw,64px) 0}
.philo-img{width:100%;aspect-ratio:4/3;object-fit:cover;box-shadow:0 22px 54px rgba(20,24,33,.18)}
.philo-sub{
  position:absolute;right:0;bottom:0;width:44%;aspect-ratio:3/4;object-fit:cover;
  border:6px solid var(--bg);box-shadow:0 16px 40px rgba(20,24,33,.22);
}
.section-alt .philo-sub{border-color:var(--bg-soft)}

/* ============ 事業領域 3カード ============ */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(22px,3vw,34px)}
.svc-card{background:var(--bg);border:1px solid var(--line);display:flex;flex-direction:column;overflow:hidden;transition:box-shadow .4s var(--trans),transform .4s var(--trans)}
.svc-card:hover{box-shadow:0 22px 54px rgba(20,24,33,.13);transform:translateY(-3px)}
.svc-img{aspect-ratio:16/10;overflow:hidden}
.svc-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--trans)}
.svc-card:hover .svc-img img{transform:scale(1.05)}
.svc-body{padding:clamp(24px,3vw,34px);display:flex;flex-direction:column;flex:1}
.svc-num{font-family:var(--f-en);font-size:.86rem;font-weight:600;letter-spacing:.2em;color:var(--accent-line)}
.svc-name-en{font-family:var(--f-en);font-size:.78rem;letter-spacing:.18em;color:var(--accent);text-transform:uppercase;margin:10px 0 6px}
.svc-name{font-family:var(--f-serif);font-weight:600;font-size:1.5rem;letter-spacing:.1em;color:var(--ink);margin-bottom:14px}
.svc-desc{font-size:.9rem;line-height:2;color:var(--sub);letter-spacing:.03em}

/* ============ 実績ハイライト（index・4件グリッド） ============ */
.works-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(18px,2.4vw,28px)}
/* index の実績ハイライトは先頭4件（各用途から1件ずつ）のみ表示 */
.works-grid .work-card:nth-child(n+5){display:none}
.work-card{display:flex;flex-direction:column;background:var(--bg)}
.work-thumb{aspect-ratio:4/3;overflow:hidden;position:relative}
.work-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--trans)}
.work-card:hover .work-thumb img{transform:scale(1.05)}
.work-tag{
  position:absolute;top:12px;left:12px;font-size:.7rem;font-weight:600;letter-spacing:.08em;
  color:#fff;background:rgba(138,43,58,.92);padding:4px 11px;border-radius:2px;
}
.work-body{padding:16px 4px 4px}
.work-name{font-family:var(--f-serif);font-weight:600;font-size:1.02rem;letter-spacing:.05em;line-height:1.65;color:var(--ink);margin-bottom:6px}
.work-meta{font-family:var(--f-en);font-size:.8rem;letter-spacing:.06em;color:var(--sub)}
.works-cta{margin-top:clamp(36px,5vw,52px);text-align:center}

/* ============ 数字（信頼・可読サンセリフ厳守） ============ */
.stats{background:var(--accent-soft)}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,40px)}
.stat{text-align:center;padding:clamp(18px,2vw,26px) 10px;position:relative}
.stat + .stat::before{content:"";position:absolute;left:0;top:16%;bottom:16%;width:1px;background:var(--line-strong)}
.stat-num{
  font-family:var(--f-en);font-weight:600;color:var(--accent);
  font-size:clamp(2.8rem,7vw,4.6rem);line-height:1;letter-spacing:.01em;
}
.stat-unit{font-family:var(--f-sans);font-weight:600;font-size:clamp(1rem,1.6vw,1.3rem);color:var(--accent-dark);margin-left:6px}
.stat-label{margin-top:16px;font-size:.9rem;font-weight:500;letter-spacing:.04em;color:var(--ink-soft)}

/* ============ 採用帯（差し色＝ページ内唯一のべた塗り面） ============ */
.recruit{position:relative;overflow:hidden;isolation:isolate;color:#fff}
.recruit-bg{position:absolute;inset:0;z-index:-2;background-size:cover;background-position:center}
.recruit::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,var(--accent-dark) 0%,rgba(95,28,40,.90) 46%,rgba(95,28,40,.62) 100%)}
.recruit-inner{max-width:var(--maxw);margin:0 auto;padding:clamp(64px,9vw,110px) clamp(20px,4vw,48px)}
.recruit-box{max-width:34em}
.recruit-eyebrow{font-family:var(--f-en);font-size:.82rem;font-weight:600;letter-spacing:.26em;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:12px;margin-bottom:18px}
.recruit-eyebrow::before{content:"";width:28px;height:2px;background:rgba(255,255,255,.8)}
.recruit-title{font-family:var(--f-serif);font-weight:600;font-size:clamp(1.6rem,3.2vw,2.4rem);line-height:1.5;letter-spacing:.08em;margin-bottom:18px;word-break:auto-phrase}
.recruit-lead{font-size:.96rem;line-height:2.1;letter-spacing:.04em;color:rgba(255,255,255,.92);margin-bottom:32px}

/* ============ FAQ ============ */
.faq-container{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-question{
  width:100%;padding:24px 0;background:transparent;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;gap:20px;font-family:var(--f-sans);font-size:.98rem;font-weight:500;color:var(--ink);
  transition:color .3s var(--trans);
}
.faq-question:hover{color:var(--accent)}
.faq-q-label{font-family:var(--f-en);font-weight:600;font-size:.92rem;color:var(--accent);letter-spacing:.08em;flex-shrink:0}
.faq-q-text{flex:1;line-height:1.7}
.faq-toggle{flex-shrink:0;width:24px;height:24px;position:relative;transition:transform .4s var(--trans)}
.faq-toggle::before,.faq-toggle::after{content:"";position:absolute;background:var(--accent);transition:all .4s var(--trans)}
.faq-toggle::before{top:50%;left:0;right:0;height:2px;transform:translateY(-50%)}
.faq-toggle::after{left:50%;top:0;bottom:0;width:2px;transform:translateX(-50%)}
.faq-item.is-open .faq-toggle::after{transform:translateX(-50%) scaleY(0)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .5s var(--trans)}
.faq-item.is-open .faq-answer{max-height:460px}
.faq-answer-inner{padding:2px 44px 28px 0;font-size:.92rem;line-height:2.1;color:var(--sub);letter-spacing:.03em}

/* ============ ボタン ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:12px;
  padding:15px 40px;font-family:var(--f-sans);font-size:.88rem;font-weight:600;letter-spacing:.1em;
  border:0;cursor:pointer;transition:all .35s var(--trans);border-radius:2px;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);opacity:1;transform:translateY(-1px)}
.btn-secondary{background:transparent;color:var(--ink);border:1px solid var(--line-strong)}
.btn-secondary:hover{background:var(--ink);color:#fff;opacity:1;border-color:var(--ink)}
.btn-outline{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.btn-outline:hover{background:var(--accent);color:#fff;opacity:1}
.btn-ghost{background:#fff;color:var(--accent)}
.btn-ghost:hover{background:var(--accent-soft);opacity:1;color:var(--accent-dark)}
.btn-arrow{display:inline-block;transition:transform .3s var(--trans)}
.btn:hover .btn-arrow{transform:translateX(4px)}

/* ============ お問い合わせCTA（index末尾・会社情報つき） ============ */
.contact-cta{background:var(--bg-soft)}
.contact-cta-inner{
  max-width:var(--maxw);margin:0 auto;padding:clamp(60px,8vw,100px) clamp(20px,4vw,48px);
  display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(40px,6vw,80px);align-items:center;
}
.contact-cta-lead .sec-label{margin-bottom:16px}
.contact-cta-title{font-family:var(--f-serif);font-weight:600;font-size:clamp(1.5rem,2.8vw,2.1rem);line-height:1.6;letter-spacing:.08em;color:var(--ink);margin-bottom:20px;word-break:auto-phrase}
.contact-cta-note{font-size:.94rem;line-height:2.05;color:var(--sub);margin-bottom:30px}
.contact-cta-actions{display:flex;gap:16px;flex-wrap:wrap}
.contact-cta-phone{display:block;margin-top:26px}
.contact-cta-phone small{display:block;font-size:.74rem;letter-spacing:.16em;color:var(--sub);margin-bottom:4px}
.contact-cta-phone a{font-family:var(--f-en);font-size:clamp(1.5rem,2.4vw,2rem);letter-spacing:.04em;color:var(--ink)}
.contact-cta-phone a:hover{color:var(--accent);opacity:1}
.company-card{background:var(--bg);border:1px solid var(--line);padding:clamp(26px,3vw,38px)}
.company-card-label{font-family:var(--f-en);font-size:.78rem;font-weight:600;letter-spacing:.2em;color:var(--accent);text-transform:uppercase;margin-bottom:18px}
.company-table{width:100%;border-collapse:collapse;font-size:.88rem}
.company-table th,.company-table td{text-align:left;padding:11px 0;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.8}
.company-table tr:last-child th,.company-table tr:last-child td{border-bottom:0}
.company-table th{font-weight:600;color:var(--sub);white-space:nowrap;width:34%;letter-spacing:.04em}
.company-table td{color:var(--ink-soft);letter-spacing:.02em}

/* ============ 下層の簡易お問い合わせ帯 ============ */
.contact-band{background:var(--ink)}
.contact-band-inner{
  max-width:var(--maxw);margin:0 auto;padding:clamp(34px,5vw,54px) clamp(20px,4vw,48px);
  display:flex;align-items:center;justify-content:space-between;gap:clamp(22px,4vw,44px);flex-wrap:wrap;
}
.contact-band-text{display:flex;align-items:baseline;gap:clamp(14px,2vw,26px);flex-wrap:wrap;min-width:0;color:#fff}
.contact-band-eyebrow{font-family:var(--f-en);font-size:.8rem;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--accent-line);display:inline-flex;align-items:center;gap:12px;white-space:nowrap}
.contact-band-eyebrow::before{content:"";width:24px;height:2px;background:var(--accent-line)}
.contact-band-title{font-family:var(--f-serif);font-weight:600;font-size:clamp(1.05rem,1.9vw,1.4rem);letter-spacing:.06em;line-height:1.7;color:#fff}
.contact-band-actions{display:flex;gap:14px;flex-shrink:0;flex-wrap:wrap}

/* ============ フッター ============ */
.footer{background:var(--ink-soft);color:rgba(255,255,255,.82);padding:66px 0 24px;font-size:.88rem}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:clamp(28px,5vw,60px);max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.footer-brand{font-family:var(--f-serif);font-weight:600;font-size:1.35rem;letter-spacing:.14em;color:#fff;margin-bottom:6px}
.footer-brand-en{font-family:var(--f-en);font-size:.68rem;letter-spacing:.26em;color:var(--accent-line);text-transform:uppercase;margin-bottom:14px}
.footer-tagline{font-size:.82rem;letter-spacing:.06em;color:rgba(255,255,255,.7);margin-bottom:18px}
.footer-info{line-height:2.05;color:rgba(255,255,255,.82)}
.footer-heading{font-family:var(--f-en);font-size:.78rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:#fff;margin-bottom:18px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:11px}
.footer-links a{color:rgba(255,255,255,.82);font-size:.88rem;letter-spacing:.04em}
.footer-links a:hover{color:#fff;opacity:1}
.footer-bottom{text-align:center;margin-top:52px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  font-family:var(--f-en);font-size:.72rem;color:rgba(255,255,255,.55);letter-spacing:.14em}

/* ============ モバイル固定CTA ============ */
.mobile-cta-bar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:90;
  background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--line);padding:10px 14px;gap:10px}
.mobile-cta-bar .btn{flex:1;padding:13px;font-size:.82rem}

/* ============ Fade-in ============ */
.fade-in{opacity:0;transform:translateY(26px);transition:opacity .9s var(--trans),transform .9s var(--trans)}
.fade-in.visible{opacity:1;transform:translateY(0)}
[data-section].is-hidden{display:none !important}
@media (prefers-reduced-motion:reduce){
  .fade-in{opacity:1;transform:none;transition:none}
}

/* ============ 下層ページ共通ヘッダー（写真背景・無地禁止） ============ */
.page-header{position:relative;overflow:hidden;isolation:isolate;text-align:center;color:#fff;
  padding:clamp(70px,10vw,112px) 0 clamp(56px,8vw,84px)}
.page-header-bg{position:absolute;inset:0;z-index:-2;background-size:cover;background-position:center;transform:scale(1.03)}
.page-header::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(20,24,33,.62),rgba(29,33,41,.72))}
.page-header-en{font-family:var(--f-en);font-size:.84rem;font-weight:600;letter-spacing:.28em;text-transform:uppercase;color:#fff;opacity:.9;margin-bottom:14px}
.page-header-en::before,.page-header-en::after{content:"—";margin:0 12px;color:var(--accent-line)}
.page-header-title{font-family:var(--f-serif);font-weight:600;font-size:clamp(1.7rem,3.6vw,2.5rem);letter-spacing:.16em;text-indent:.16em}
.page-lead{max-width:60ch;margin:0 auto;text-align:center;font-size:.95rem;line-height:2.05;color:var(--sub);letter-spacing:.03em}

/* ============ 施工実績ページ（用途別タブ＋大判グリッド） ============ */
.works-tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:clamp(36px,5vw,52px) 0 clamp(30px,4vw,44px)}
.works-tab{
  font-family:var(--f-sans);font-size:.88rem;font-weight:500;letter-spacing:.06em;color:var(--ink-soft);
  background:transparent;border:1px solid var(--line-strong);padding:9px 22px;border-radius:999px;cursor:pointer;
  transition:all .3s var(--trans);white-space:nowrap;
}
.works-tab:hover{border-color:var(--accent);color:var(--accent)}
.works-tab.is-active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.works-list{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(24px,3.4vw,44px)}
.work-item{display:flex;flex-direction:column;background:var(--bg)}
.work-item.is-hidden{display:none}
.work-item-thumb{aspect-ratio:16/10;overflow:hidden;position:relative}
.work-item-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--trans)}
.work-item:hover .work-item-thumb img{transform:scale(1.04)}
.work-item-tag{position:absolute;top:14px;left:14px;font-size:.72rem;font-weight:600;letter-spacing:.08em;color:#fff;background:rgba(138,43,58,.92);padding:5px 13px;border-radius:2px}
.work-item-body{padding:22px 4px 4px}
.work-item-name{font-family:var(--f-serif);font-weight:600;font-size:1.2rem;letter-spacing:.05em;line-height:1.6;color:var(--ink);margin-bottom:10px}
.work-item-meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-family:var(--f-en);font-size:.82rem;letter-spacing:.04em;color:var(--sub);margin-bottom:12px}
.work-item-meta span{display:inline-flex;align-items:center;gap:6px}
.work-item-meta span::before{content:"";width:4px;height:4px;background:var(--accent-line);border-radius:50%}
.work-item-desc{font-size:.9rem;line-height:1.95;color:var(--sub);letter-spacing:.02em}
.works-empty{grid-column:1/-1;text-align:center;color:var(--sub);padding:40px 0;display:none}

/* ============ 事業案内ページ ============ */
.svc-detail{display:grid;gap:clamp(48px,7vw,88px)}
.svc-detail-row{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,72px);align-items:center}
.svc-detail-row:nth-child(even) .svc-detail-media{order:2}
.svc-detail-media{overflow:hidden;aspect-ratio:16/11}
.svc-detail-media img{width:100%;height:100%;object-fit:cover}
.svc-detail-num{font-family:var(--f-en);font-size:.9rem;font-weight:600;letter-spacing:.2em;color:var(--accent-line);margin-bottom:10px}
.svc-detail-en{font-family:var(--f-en);font-size:.8rem;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:6px}
.svc-detail-name{font-family:var(--f-serif);font-weight:600;font-size:clamp(1.4rem,2.4vw,1.9rem);letter-spacing:.1em;color:var(--ink);margin-bottom:16px}
.svc-detail-desc{font-size:.94rem;line-height:2.1;color:var(--sub);letter-spacing:.03em}

/* 施工の流れ */
.flow-list{max-width:860px;margin:0 auto;counter-reset:flow}
.flow-step{display:grid;grid-template-columns:auto 1fr;gap:clamp(20px,3vw,40px);padding:24px 0;border-bottom:1px solid var(--line);position:relative}
.flow-step:last-child{border-bottom:0}
.flow-num{font-family:var(--f-en);font-weight:600;font-size:1.6rem;line-height:1;color:#fff;background:var(--accent);width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.flow-body{padding-top:4px}
.flow-title{font-family:var(--f-serif);font-weight:600;font-size:1.12rem;letter-spacing:.06em;color:var(--ink);margin-bottom:6px}
.flow-desc{font-size:.9rem;line-height:1.95;color:var(--sub)}

/* 品質・安全ブロック */
.qs-block{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,72px);align-items:center}
.qs-block.is-flip .qs-media{order:2}
.qs-media{overflow:hidden;aspect-ratio:4/3}
.qs-media img{width:100%;height:100%;object-fit:cover}
.qs-body .sec-label{margin-bottom:14px}
.qs-body .sec-label::after{display:none}
.qs-title{font-family:var(--f-serif);font-weight:600;font-size:clamp(1.4rem,2.6vw,2rem);line-height:1.55;letter-spacing:.08em;color:var(--ink);margin-bottom:18px}
.qs-title em{font-style:normal;color:var(--accent)}
.qs-lead{font-size:.94rem;line-height:2.1;color:var(--sub);letter-spacing:.03em;margin-bottom:24px}
.qs-points{list-style:none;display:grid;gap:12px}
.qs-points li{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;font-size:.92rem;color:var(--ink-soft);line-height:1.8;
  padding-bottom:12px;border-bottom:1px solid var(--line)}
.qs-points li:last-child{border-bottom:0;padding-bottom:0}
.qs-points li::before{content:"";width:9px;height:9px;margin-top:9px;flex-shrink:0;border-radius:50%;background:var(--accent)}

/* ============ 会社案内ページ ============ */
.greeting{display:grid;grid-template-columns:minmax(260px,400px) 1fr;gap:clamp(36px,5vw,74px);align-items:start}
.greeting-media{position:sticky;top:calc(var(--head-h) + 30px)}
.greeting-frame{position:relative}
.greeting-img{width:100%;aspect-ratio:3/4;object-fit:cover;box-shadow:0 22px 54px rgba(20,24,33,.18)}
.greeting-sub{position:absolute;right:-14px;bottom:-26px;width:48%;aspect-ratio:4/3;object-fit:cover;
  border:5px solid var(--bg);box-shadow:0 16px 38px rgba(20,24,33,.22)}
.greeting-sign{margin-top:18px;text-align:right}
.greeting-role{font-size:.82rem;letter-spacing:.1em;color:var(--sub)}
.greeting-name{font-family:var(--f-serif);font-weight:600;font-size:1.4rem;letter-spacing:.14em;color:var(--ink);margin-top:4px}
.greeting-name-en{font-family:var(--f-en);font-size:.76rem;letter-spacing:.16em;color:var(--sub);margin-top:4px}
.greeting-title{font-family:var(--f-serif);font-weight:600;font-size:clamp(1.5rem,2.8vw,2.1rem);line-height:1.6;letter-spacing:.08em;color:var(--ink);margin-bottom:26px;word-break:auto-phrase}
.greeting-title em{font-style:normal;color:var(--accent)}
.greeting-message{font-size:.96rem;line-height:2.25;color:var(--ink-soft);letter-spacing:.03em}

.history-list{max-width:820px;margin:0 auto;list-style:none}
.history-item{display:grid;grid-template-columns:auto 1fr;gap:clamp(22px,4vw,52px);padding:20px 0;border-bottom:1px solid var(--line);align-items:baseline}
.history-item:last-child{border-bottom:0}
.history-year{font-family:var(--f-en);font-weight:600;font-size:1.3rem;letter-spacing:.04em;color:var(--accent);white-space:nowrap}
.history-year::after{content:"";display:block;width:24px;height:2px;background:var(--accent-line);margin-top:8px}
.history-text{font-size:.94rem;line-height:1.9;color:var(--ink-soft);letter-spacing:.03em}

.info-table{width:100%;max-width:900px;margin:0 auto;border-collapse:collapse;font-size:.94rem}
.info-table th,.info-table td{text-align:left;padding:18px 8px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.9}
.info-table th{font-family:var(--f-sans);font-weight:600;color:var(--ink);white-space:nowrap;width:26%;letter-spacing:.04em;background:var(--bg-soft)}
.section-alt .info-table th{background:var(--bg)}
.info-table td{color:var(--ink-soft);letter-spacing:.02em}

/* ============ お問い合わせページ ============ */
.contact-intro{max-width:640px;margin:0 auto clamp(46px,6vw,66px);text-align:center}
.contact-intro p{font-size:.96rem;line-height:2.15;color:var(--sub);letter-spacing:.03em}
.contact-form{max-width:600px;margin:0 auto}
.form-group{margin-bottom:26px}
.form-label{display:block;font-size:.9rem;font-weight:600;color:var(--ink);letter-spacing:.04em;margin-bottom:10px}
.form-label .required{display:inline-block;font-size:.68rem;font-weight:600;letter-spacing:.08em;color:var(--accent);margin-left:8px;vertical-align:2px}
.form-label .required::before{content:"※";margin-right:2px}
.form-input,.form-select,.form-textarea{
  width:100%;padding:14px 18px;border:1px solid var(--line-strong);border-radius:2px;
  font-family:var(--f-sans);font-size:1rem;color:var(--ink);background:var(--bg);transition:all .25s var(--trans);letter-spacing:.02em;
}
.form-input::placeholder,.form-textarea::placeholder{color:rgba(29,33,41,.35)}
.form-input:hover,.form-select:hover,.form-textarea:hover{border-color:var(--sub)}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px rgba(138,43,58,.1)}
.form-select{appearance:none;-webkit-appearance:none;cursor:pointer;padding-right:40px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%231d2129' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-position:calc(100% - 18px) center;background-repeat:no-repeat}
.form-textarea{min-height:150px;resize:vertical;line-height:1.9}
.form-submit{display:block;margin:40px auto 0;padding:17px 72px;min-width:230px;
  font-family:var(--f-sans);font-size:.9rem;font-weight:600;letter-spacing:.16em;
  background:var(--accent);color:#fff;border:0;border-radius:2px;cursor:pointer;transition:all .35s var(--trans)}
.form-submit:hover{background:var(--accent-dark);transform:translateY(-1px)}
.form-submit:disabled{opacity:.6;cursor:default;transform:none}
.quick-contact{text-align:center;padding:clamp(60px,8vw,100px) 0;background:var(--bg-soft);border-top:1px solid var(--line)}
.quick-contact .sec-title{margin-bottom:22px}
.quick-contact-phone{font-family:var(--f-en);font-size:clamp(1.8rem,3.2vw,2.5rem);letter-spacing:.04em;color:var(--ink);
  display:inline-block;border-bottom:2px solid var(--line-strong);padding-bottom:6px;margin-top:8px}
.quick-contact-phone:hover{border-color:var(--accent);color:var(--accent);opacity:1}
.quick-contact-hours{font-size:.88rem;color:var(--sub);margin-top:18px;letter-spacing:.04em}

/* ============ レスポンシブ ============ */
/* ナビ→ハンバーガー切替（ナビが収まらなくなる幅+140px余裕。iPad縦834pxもハンバーガー側） */
@media (max-width:980px){
  .hamburger{display:flex}
  .nav-list{display:none}
  .nav-list.open{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    position:absolute;top:var(--head-h);left:0;right:0;
    background:var(--bg);border-bottom:1px solid var(--line);box-shadow:0 20px 40px rgba(20,24,33,.12);
    padding:8px clamp(18px,4vw,48px) 20px;
  }
  .nav-list.open li{border-bottom:1px solid var(--line)}
  .nav-list.open li:last-child{border-bottom:0;margin-top:14px}
  .nav-list.open a{display:block;padding:16px 2px;font-size:.96rem}
  .nav-list.open a::after{display:none}
  .nav-list.open a.nav-reservation{text-align:center;padding:14px}
}
@media (max-width:900px){
  .hero{min-height:auto}
  .hero-mosaic{position:relative;width:100%;height:clamp(300px,52vw,420px);grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(2,1fr)}
  .hero-mosaic .hero-tile{grid-column:auto;grid-row:auto}
  .hero-mosaic .hero-tile:nth-child(n+9){display:none}
  .hero-scrim{position:relative;height:0}
  .hero{flex-direction:column;padding:0}
  .hero-panel{margin:-56px 16px 0;max-width:none;width:calc(100% - 32px)}
  .philo-grid{grid-template-columns:1fr;gap:44px}
  .philo-media{order:-1;max-width:520px}
  .svc-grid{grid-template-columns:1fr;gap:26px;max-width:460px;margin:0 auto}
  .works-grid{grid-template-columns:repeat(2,1fr);gap:22px}
  .contact-cta-inner{grid-template-columns:1fr;gap:40px}
  .svc-detail-row{grid-template-columns:1fr;gap:26px}
  .svc-detail .svc-detail-media{order:-1}
  .svc-detail-media{max-width:560px;margin:0 auto}
  .qs-block{grid-template-columns:1fr;gap:26px}
  .qs-block.is-flip .qs-media{order:-1}
  .qs-media{max-width:560px}
  .greeting{grid-template-columns:1fr;gap:32px}
  .greeting-media{position:static;max-width:360px}
  .greeting-sub{display:none}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .mobile-cta-bar{display:flex}
  body{padding-bottom:72px}
  .news-inner{flex-direction:column;gap:12px}
  .works-list{grid-template-columns:1fr;gap:26px}
  .stats-grid{grid-template-columns:1fr}
  .stat + .stat::before{display:none}
  .stat + .stat{border-top:1px solid var(--line-strong)}
  .footer-inner{grid-template-columns:1fr;gap:32px}
  .contact-band-inner{flex-direction:column;align-items:flex-start}
  .contact-band-actions{width:100%}
  .contact-band-actions .btn{flex:1 1 auto}
  .info-table th{width:38%}
}
@media (max-width:520px){
  .hero-mosaic{height:clamp(240px,58vw,320px);grid-template-columns:repeat(2,1fr)}
  .hero-eyebrow{font-size:.66rem;letter-spacing:.13em}
  .hero-panel{padding:30px 22px 34px}
  .works-grid{grid-template-columns:1fr;gap:22px;max-width:420px;margin:0 auto}
  .history-item{grid-template-columns:1fr;gap:6px}
  .history-year::after{display:none}
  .info-table th,.info-table td{display:block;width:100%;border-bottom:0;padding:6px 4px}
  .info-table td{padding-bottom:16px;border-bottom:1px solid var(--line)}
  .info-table th{background:transparent;color:var(--accent);padding-top:14px}
}

/* C案: ロゴ画像スロット（site.logoImage 指定時のみ表示。未指定時は文字ワードマーク） */
.logo-img{height:40px;width:auto;display:block;max-width:100%}