:root{
  --bg:#ffffff;--text:#111;--muted:#555;--line:#e6e6e6;--card:#fafafa;
  --accent:#111;--accent2:#0b5fff;--radius:14px;--max:980px;
  --shadow:0 6px 22px rgba(0,0,0,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP",Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  line-height:1.75;color:var(--text);background:var(--bg);
}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--max);margin:0 auto;padding:24px}
header.site-header{position:sticky;top:0;background:rgba(255,255,255,.9);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line);z-index:10}
.nav{display:flex;gap:14px;align-items:center;justify-content:space-between;max-width:var(--max);margin:0 auto;padding:14px 24px}
.brand{font-weight:700;letter-spacing:.2px}
.brand small{display:block;color:var(--muted);font-weight:500;font-size:12px}
.navlinks{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end}
.navlinks a{color:var(--text);font-weight:600;font-size:14px}
.hero{padding:28px 0 10px 0}
.badge{display:inline-flex;gap:8px;align-items:center;background:var(--card);border:1px solid var(--line);padding:6px 10px;border-radius:999px;font-size:13px;color:var(--muted)}
h1{font-size:28px;line-height:1.35;margin:12px 0 8px 0}
h2{font-size:20px;margin:28px 0 10px 0}
h3{font-size:16px;margin:18px 0 8px 0}
p.lead{font-size:16px;color:var(--muted);margin:0 0 16px 0}
.grid{display:grid;gap:14px}
.grid.two{grid-template-columns:1fr}
@media(min-width:860px){.grid.two{grid-template-columns:1.15fr .85fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.callout{border-left:4px solid var(--accent2);background:#f5f8ff;padding:12px 14px;border-radius:12px}
.kpi{display:flex;gap:10px;flex-wrap:wrap}
.kpi span{background:white;border:1px solid var(--line);padding:6px 10px;border-radius:999px;font-size:13px;color:var(--muted)}
.tablewrap{overflow:auto;border:1px solid var(--line);border-radius:var(--radius);background:white}
table{width:100%;border-collapse:collapse;min-width:920px}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:#f3f3f3;font-size:13px;text-align:left}
td{font-size:14px}
.note{font-size:13px;color:var(--muted)}
.btnrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:white;color:var(--text);font-weight:700;font-size:14px}
.btn.primary{background:var(--text);color:white;border-color:var(--text)}
.btn.soft{background:#f1f1f1}
.list{padding-left:18px;margin:10px 0}
.list li{margin:6px 0}
.faq details{border:1px solid var(--line);border-radius:12px;background:white;padding:10px 12px;margin:10px 0}
.faq summary{cursor:pointer;font-weight:700}
footer{margin-top:36px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
.footergrid{display:grid;gap:10px}
@media(min-width:860px){.footergrid{grid-template-columns:1.2fr .8fr}}
.smalllinks{display:flex;gap:12px;flex-wrap:wrap}
.smalllinks a{color:var(--muted);font-weight:600}
hr.sep{border:none;border-top:1px solid var(--line);margin:14px 0}


/* === Desktop readability fix (PC only) === */
@media (min-width: 1100px) {
  .grid.two {
    grid-template-columns: 1.3fr 1fr;
  }
}