/* 株式会社スラブ サイト用スタイル */
:root{
  --bg: #ffffff;
  --ink: #0b1b2b;
  --muted: #5a6b7b;
  --primary: #005588;
  --primary-ink: #ffffff;
  --alt: #f5f8fb;
  --border: #e6ecf1;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
}

.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--border);z-index:10}
.header-inner{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:10px 0}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo{height:40px;width:auto;display:block;margin:1rem 0}
.nav{display:flex;gap:16px;align-items:center}
.nav a{color:var(--ink);text-decoration:none;padding:8px 10px;border-radius:8px}
.nav a:hover{background:var(--alt)}
.btn{display:inline-block;padding:10px 16px;border:1px solid var(--primary);color:var(--primary);border-radius:10px;text-decoration:none;font-weight:600}
.btn.primary{background:var(--primary);color:var(--primary-ink);border-color:var(--primary)}
.btn.primary:hover{filter:brightness(1.05)}

/* Hero */
.hero{background:linear-gradient(180deg, #f0f6fb, #ffffff);border-bottom:1px solid var(--border)}
.hero-inner{display:grid;grid-template-columns:1.2fr 1fr;gap:28px;padding:56px 0;grid-template-areas:"copy visual"}
.hero-copy{grid-area:copy}
.hero-visual{grid-area:visual}
.hero-copy {padding-left: 16px; padding-right: 16px; white-space: pre-line;}
.hero-copy h1{margin:0 0 12px;font-size:clamp(22px,4vw,36px);line-height:1.3}
.hero-copy p{margin:0 0 20px;color:var(--muted)}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-visual{min-height:220px;border-radius:16px;background:url('img/hero.png') center/cover no-repeat;border:1px solid var(--border)}

/* Sections */
.section{padding:56px 0}
.section.alt{background:var(--alt)}
.section h2{margin:0 0 20px;font-size:clamp(20px,3.2vw,28px)}

/* Services */
.services{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;list-style:none;margin:0;padding:0}
.services li{background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px}
.services h3{margin:0 0 6px;font-size:16px}
.services p{margin:0;color:var(--muted)}

/* Info */
.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
dl{margin:0}
dt{font-weight:700;margin-top:10px}
dd{margin:6px 0 0}
.about-note{align-self:start;background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px}
.branch-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px}
.branch-card h3{margin:0 0 6px;font-size:18px}
.company-meta{margin-top:16px}
.map-link{display:inline-block;margin-top:8px}

/* Contact */
.contact-meta{color:var(--muted);font-size:14px}

/* Footer */
.site-footer{border-top:1px solid var(--border);background:#fff}
.footer-inner{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:18px 0;flex-wrap:wrap}
.addr{color:var(--muted)}

/* Responsive */
@media (max-width: 860px){
  .hero-inner{grid-template-columns:1fr;grid-template-areas:
    "visual"
    "copy";
  }
  .services{grid-template-columns:1fr}
  .info-grid{grid-template-columns:1fr}
}

/* Small phones (iPhone SE等 320–375px) */
@media (max-width: 560px){
  /* スマホで左右に十分な余白を確保 */
  .container{padding:0 16px}
  .logo{height:32px}
  .nav{gap:8px;flex-wrap:wrap}
  .nav a{padding:8px 8px;font-size:14px}
  /* スマホ時は「お問い合わせ」(最後のリンク) だけ表示 */
  .nav a:not(:last-child){display:none}
  .btn{padding:9px 14px;font-size:14px}
  /* ヒーロー下部の余白をさらに縮小 */
  .hero-inner{gap:16px;padding:12px 0 0}
  /* ヒーローの下線を消す（隙間ゼロ化） */
  .hero{border-bottom:0}
  /* 見出し余白もゼロに */
  .hero-copy h1{margin:0}
  /* ヒーロー本文の段落マージンもゼロに */
  .hero-copy p{margin:0}
  /* ヒーロー直後のセクションは上パディングをゼロに */
  .hero + .section{padding-top:0}
  .hero-visual{min-height:160px}
  .section{padding:36px 0}
  .footer-inner{gap:10px}
  .contact-meta{font-size:13px}
}

@media (max-width: 360px){
  /* .header-inner{align-items:flex-start} */
  .nav{width:100%;justify-content:flex-end}
  .nav a{padding:6px 8px;font-size:13px}
  .hero-cta{gap:8px}
}