:root{
  --bg:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --border:#e5e7eb;
  --card:#f8fafc;
  --brand:#1f4aa8;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(980px,92vw);margin:0 auto}
header{
  border-bottom:1px solid var(--border);
  background:#fff;
}
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:18px 0;
}
.brand{
  font-weight:700;letter-spacing:.02em;
  display:flex;align-items:center;gap:10px;
}
.badge{
  font-size:12px;color:#fff;background:var(--brand);
  padding:2px 8px;border-radius:999px;
}
nav ul{list-style:none;display:flex;gap:14px;margin:0;padding:0;flex-wrap:wrap}
nav a{font-size:14px;color:var(--text)}
main{padding:28px 0 48px}
.hero{
  padding:22px;
  border:1px solid var(--border);
  border-radius:14px;
  background:linear-gradient(180deg, #f8fafc, #ffffff);
}
.hero h1{margin:0 0 8px;font-size:22px}
.hero p{margin:0;color:var(--muted)}
.grid{
  margin-top:18px;
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap:16px;
}
@media (max-width:860px){
  .grid{grid-template-columns:1fr}
}
.card{
  border:1px solid var(--border);
  border-radius:14px;
  background:#fff;
  padding:18px;
}
.card h2{margin:0 0 10px;font-size:18px}
.kv{
  display:grid;
  grid-template-columns: 160px 1fr;
  gap:10px;
}
@media (max-width:560px){
  .kv{grid-template-columns:1fr}
}
.kv div{padding:10px 12px;border-radius:10px;background:var(--card);border:1px solid var(--border)}
.kv div b{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}
.note{
  margin-top:12px;
  font-size:13px;color:var(--muted);
}
.btnrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.btn{
  display:inline-block;
  padding:10px 14px;
  border-radius:12px;
  border:1px solid var(--border);
  background:#fff;
  color:var(--text);
  font-size:14px;
}
.btn.primary{
  background:var(--brand);
  color:#fff;
  border-color:var(--brand);
}
footer{
  border-top:1px solid var(--border);
  background:#fff;
  padding:18px 0;
  color:var(--muted);
  font-size:13px;
}
footer .foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap
}
small{color:var(--muted)}
hr{border:none;border-top:1px solid var(--border);margin:18px 0}
.form{
  display:grid;gap:12px;margin-top:10px
}
label{font-size:13px;color:var(--muted)}
input,textarea{
  width:100%;
  padding:10px 12px;
  border:1px solid var(--border);
  border-radius:12px;
  font:inherit;
}
textarea{min-height:140px;resize:vertical}