:root{
  --bg:#f6f3ee;
  --panel:#ffffff;
  --ink:#262420;
  --muted:#726c62;
  --accent:#a8592c;
  --accent-soft:#e9d3c3;
  --line:rgba(38,36,32,.12);
  --radius:2px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.85;
  font-size:15px;
}
h1,h2,h3,.serif{
  font-family:"Hiragino Mincho ProN","Yu Mincho",serif;
  font-weight:600;
  line-height:1.55;
  letter-spacing:.02em;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
.container{max-width:1040px;margin:0 auto;padding:0 28px;}
.eyebrow{
  display:block;font-size:12px;letter-spacing:.2em;color:var(--accent);
  text-transform:uppercase;margin-bottom:16px;font-weight:600;
}

/* サンプルバナー */
.sample-banner{
  background:var(--ink);color:#fff;text-align:center;font-size:12.5px;
  padding:8px 12px;letter-spacing:.02em;
}
.sample-banner strong{color:var(--accent-soft);}

/* header */
header{
  background:rgba(246,243,238,.92);backdrop-filter:blur(6px);
  position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:22px 28px;}
.logo{font-family:"Hiragino Mincho ProN","Yu Mincho",serif;font-size:19px;letter-spacing:.08em;}
.logo span{color:var(--accent);}
.nav-links{display:flex;gap:32px;font-size:13.5px;font-weight:600;letter-spacing:.03em;}
.nav-links a.active{color:var(--accent);}
.nav-cta{
  border:1px solid var(--ink);padding:10px 22px;font-size:13px;font-weight:600;
  letter-spacing:.03em;
}
@media(max-width:760px){ .nav-links{display:none;} }

/* ページヒーロー(下層ページ用) */
.page-hero{position:relative;height:280px;overflow:hidden;}
.page-hero img{width:100%;height:100%;object-fit:cover;}
.page-hero-overlay{
  position:absolute;inset:0;background:linear-gradient(0deg,rgba(38,36,32,.72),rgba(38,36,32,.35));
  display:flex;align-items:flex-end;
}
.page-hero-text{padding:0 28px 40px;max-width:1040px;margin:0 auto;width:100%;color:#fff;}
.page-hero-text .eyebrow{color:var(--accent-soft);}
.page-hero-text h1{font-size:clamp(24px,4vw,34px);color:#fff;}

/* トップ ヒーロー */
.hero{position:relative;overflow:hidden;height:640px;}
.hero img{width:100%;height:100%;object-fit:cover;}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(38,36,32,.72) 20%,rgba(38,36,32,.25) 60%,rgba(38,36,32,.55) 100%);
  display:flex;align-items:center;
}
.hero-inner{max-width:1040px;margin:0 auto;padding:0 28px;color:#fff;}
.hero h1{font-size:clamp(30px,5.2vw,52px);color:#fff;max-width:600px;margin-bottom:22px;}
.hero p{font-size:15.5px;color:#e8e4dd;max-width:460px;margin-bottom:34px;}
.btn{
  display:inline-block;padding:15px 30px;font-size:13.5px;font-weight:700;letter-spacing:.05em;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-outline{border:1px solid rgba(255,255,255,.55);color:#fff;margin-left:10px;}
.btn-outline-dark{border:1px solid var(--ink);color:var(--ink);}

section{padding:100px 0;}
.section-head{max-width:600px;margin:0 auto 60px;text-align:center;}
.section-head h2{font-size:clamp(22px,3.2vw,30px);}
.section-head p{color:var(--muted);margin-top:16px;font-size:14.5px;}

/* 強み(3カラム) */
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);}
@media(max-width:760px){ .values{grid-template-columns:1fr;} }
.value-item{padding:40px 30px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
.value-item:last-child{border-right:none;}
.value-item .num{font-family:"Hiragino Mincho ProN","Yu Mincho",serif;font-size:13px;color:var(--accent);margin-bottom:14px;display:block;}
.value-item h3{font-size:17px;margin-bottom:12px;}
.value-item p{font-size:13.5px;color:var(--muted);}

/* 施工事例ピックアップ / ギャラリー */
.works-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
@media(max-width:860px){ .works-grid{grid-template-columns:repeat(2,1fr);} }
@media(max-width:560px){ .works-grid{grid-template-columns:1fr;} }
.work-card{display:block;}
.work-card .thumb{aspect-ratio:4/3;overflow:hidden;margin-bottom:16px;}
.work-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.work-card:hover .thumb img{transform:scale(1.04);}
.work-tag{font-size:11.5px;color:var(--accent);letter-spacing:.08em;text-transform:uppercase;margin-bottom:8px;display:block;}
.work-card h3{font-size:16px;margin-bottom:6px;}
.work-card .meta{font-size:12.5px;color:var(--muted);}
.works-more{text-align:center;margin-top:56px;}

/* 会社概要テーブル */
.profile-table{width:100%;border-collapse:collapse;margin-top:12px;}
.profile-table tr{border-top:1px solid var(--line);}
.profile-table tr:last-child{border-bottom:1px solid var(--line);}
.profile-table th{
  text-align:left;font-weight:600;padding:18px 20px 18px 0;width:160px;vertical-align:top;
  font-size:13.5px;color:var(--muted);
}
.profile-table td{padding:18px 0;font-size:14.5px;}

/* 代表メッセージ */
.message-block{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:center;}
@media(max-width:800px){ .message-block{grid-template-columns:1fr;} }
.message-block img{aspect-ratio:4/5;object-fit:cover;width:100%;}
.message-block blockquote{font-size:15.5px;color:var(--ink);margin-bottom:20px;}
.message-block .role{font-size:13px;color:var(--muted);}

/* 沿革 */
.history{border-top:1px solid var(--line);}
.history-item{
  display:grid;grid-template-columns:120px 1fr;gap:24px;padding:22px 0;border-bottom:1px solid var(--line);
}
.history-item .year{font-family:"Hiragino Mincho ProN","Yu Mincho",serif;font-size:16px;color:var(--accent);}
.history-item p{font-size:14px;color:var(--muted);}

/* CTA */
.cta-section{background:var(--ink);color:#fff;text-align:center;}
.cta-section h2{color:#fff;font-size:clamp(22px,3.4vw,30px);margin-bottom:18px;}
.cta-section p{color:#c9c4bb;margin-bottom:34px;font-size:14.5px;}

/* お問い合わせフォーム */
.contact-layout{display:grid;grid-template-columns:0.9fr 1.1fr;gap:64px;}
@media(max-width:820px){ .contact-layout{grid-template-columns:1fr;} }
.contact-info h3{font-size:16px;margin-bottom:14px;}
.contact-info p{font-size:13.5px;color:var(--muted);margin-bottom:26px;}
.contact-info dl{font-size:13.5px;}
.contact-info dt{color:var(--muted);margin-top:16px;}
.contact-info dd{margin-top:4px;}
form{background:var(--panel);padding:36px;border:1px solid var(--line);}
.field{margin-bottom:20px;}
.field label{display:block;font-size:12.5px;font-weight:700;margin-bottom:8px;color:var(--muted);}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);font-size:14px;
  font-family:inherit;background:#fdfcfa;
}
.field textarea{resize:vertical;min-height:110px;}
form .btn-primary{width:100%;text-align:center;border:none;font-size:14.5px;cursor:pointer;}
.form-note{font-size:11.5px;color:var(--muted);margin-top:14px;text-align:center;}

footer{background:var(--ink);color:#a49e93;padding:48px 28px;text-align:center;font-size:12px;}
footer strong{color:#fff;}
footer nav{display:flex;justify-content:center;gap:24px;margin-bottom:20px;font-size:12.5px;}