:root{
  --bg:#fdf8f1;
  --card:#ffffff;
  --ink:#2b2420;
  --muted:#6f6357;
  --line:#ece2d4;
  --brand:#c8863b;
  --brand-dark:#a76b28;
  --accent:#f4e3c8;
  --radius:16px;
  --maxw:880px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Zen Maru Gothic","Hiragino Kaku Gothic ProN","Noto Sans JP",system-ui,-apple-system,sans-serif;
  line-height:1.85;
  font-size:16px;
}
a{color:var(--brand-dark);text-underline-offset:3px}
a:hover{color:var(--brand)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* header */
.site-header{
  position:sticky;top:0;z-index:10;
  background:rgba(253,248,241,.9);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--ink);text-decoration:none;letter-spacing:.02em}
.brand .dot{width:12px;height:12px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px var(--accent)}
nav.main{display:flex;gap:18px;flex-wrap:wrap}
nav.main a{color:var(--muted);text-decoration:none;font-size:14px}
nav.main a:hover,nav.main a[aria-current="page"]{color:var(--brand-dark)}

/* hero */
.hero{padding:64px 0 40px;text-align:center}
.hero .badge{display:inline-block;background:var(--accent);color:var(--brand-dark);font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;letter-spacing:.08em}
.hero h1{font-size:34px;margin:18px 0 10px;letter-spacing:.02em}
.hero p{color:var(--muted);max-width:560px;margin:0 auto;font-size:16px}

/* sections */
main{padding:16px 0 64px}
section{margin:40px 0}
h2{font-size:22px;margin:0 0 14px;padding-bottom:8px;border-bottom:2px solid var(--accent)}
h3{font-size:17px;margin:24px 0 6px}

.cards{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.cards{grid-template-columns:1fr 1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card h3{margin-top:0}
.card .tag{display:inline-block;font-size:11px;font-weight:700;color:var(--brand-dark);background:var(--accent);border-radius:999px;padding:3px 10px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14px;margin:6px 0 0}

.legal{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.legal p,.legal li{color:#443c34}
.legal ol,.legal ul{padding-left:1.3em}
.legal .meta{color:var(--muted);font-size:13px;margin-top:0}
.contact-box{display:inline-block;background:var(--accent);border-radius:12px;padding:12px 18px;font-weight:700;color:var(--brand-dark);text-decoration:none}

.toc a{display:inline-block;margin:0 12px 6px 0;font-size:13px}

/* footer */
.site-footer{border-top:1px solid var(--line);background:#fbf3e8}
.site-footer .wrap{padding:28px 20px;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center}
.site-footer a{color:var(--muted);text-decoration:none;font-size:13px;margin-right:14px}
.site-footer a:hover{color:var(--brand-dark)}
.site-footer .small{color:var(--muted);font-size:12px}
.backlink{font-size:13px}