:root{
  --bg:#fff;
  --alt:#fbf7f1;
  --text:#1f1f1f;
  --muted:#5a5a5a;
  --line:#e8e0d6;
  --accent:#6b4f3a;  /* ブラウン */
  --accent2:#b07a4a; /* くすみオレンジ */
  --radius:18px;
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans JP", sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;border-radius:var(--radius)}
.container{max-width:1080px;margin:0 auto;padding:0 18px}

.site-header{
  position:sticky;top:0;z-index:10;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(120%) blur(6px);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.logo{height:34px;width:auto}
.nav{display:flex;gap:18px;align-items:center}
.nav a{font-size:14px;color:var(--muted)}
.nav a:hover{color:var(--text)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 16px;border-radius:999px;
  border:1px solid var(--line);
  font-weight:700;font-size:14px;
}
.btn-primary{
  background:var(--accent);
  border-color:var(--accent);
  color:#fff;
}
.btn-primary:hover{filter:brightness(1.05)}
.btn-ghost{
  background:#fff;
}
.btn-ghost:hover{border-color:#d7c7b7}

.hero{padding:46px 0}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;align-items:center}
.badge{
  display:inline-block;
  padding:6px 10px;border-radius:999px;
  background:var(--alt);
  border:1px solid var(--line);
  color:var(--accent);
  font-weight:700;font-size:12px;
}
h1{font-size:40px;line-height:1.2;margin:12px 0 12px}
.lead{color:var(--muted);font-size:16px;margin:0 0 16px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.note{color:var(--muted);font-size:12px;margin-top:10px}

.section{padding:56px 0}
.section.alt{background:var(--alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2{font-size:26px;margin:0 0 18px}
h3{font-size:18px;margin:0 0 8px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.list-check{margin:0;padding-left:18px;color:var(--muted)}
.callout{
  margin-top:18px;
  padding:16px 18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
}

.flow{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:10px 0 22px}
.flow-item{
  padding:10px 12px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-weight:700;font-size:13px;
}
.flow-arrow{color:var(--accent2);font-weight:900}

.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:16px;
  box-shadow:0 6px 18px rgba(0,0,0,.04);
}
.card p{margin:0;color:var(--muted);font-size:14px}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px}
.link{color:var(--accent);font-weight:700;font-size:14px}
.link:hover{text-decoration:underline}

.case{display:grid;grid-template-columns:.95fr 1.05fr;gap:16px;align-items:center;margin-top:16px}
.case-body p{color:var(--muted);margin:0 0 12px}

.cta{
  padding:46px 0;
  background:linear-gradient(0deg, #fff, var(--alt));
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px;
  background:#fff;
}
.cta-inner p{margin:6px 0 0;color:var(--muted)}

.site-footer{padding:22px 0;border-top:1px solid var(--line);background:#fff}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:12px}
.footer-links{display:flex;gap:14px}
.footer-links a{color:var(--muted);font-size:13px}
.footer-links a:hover{color:var(--text)}

@media (max-width: 860px){
  h1{font-size:32px}
  .hero-inner{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr 1fr}
  .case{grid-template-columns:1fr}
  .nav{gap:12px}
}
@media (max-width: 520px){
  .cards{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .nav a{display:none}
}
input, select, textarea{
  width:100%;
  padding:12px 12px;
  border:1px solid var(--line);
  border-radius:12px;
  font-size:14px;
  outline:none;
  background:#fff;
}
input:focus, select:focus, textarea:focus{
  border-color:#d7c7b7;
  box-shadow:0 0 0 4px rgba(215,199,183,.35);
}
label{font-weight:700;font-size:13px}