*{box-sizing:border-box}
:root{
  --ink:#23201c; --ink-soft:#5c564e; --line:#e3ded6;
  --bg:#fbf9f6; --card:#fff; --accent:#8a6f4e; --accent-ink:#6b5638;
  --max:1080px;
}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Hiragino Kaku Gothic ProN","Yu Gothic Medium","Yu Gothic",Meiryo,system-ui,sans-serif;
  line-height:1.85;font-size:16px;letter-spacing:.02em}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent-ink)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

header.site{border-bottom:1px solid var(--line);background:rgba(251,249,246,.94);
  position:sticky;top:0;z-index:10;backdrop-filter:blur(6px)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;flex-wrap:wrap}
.logo{font-size:1.35rem;font-weight:700;letter-spacing:.22em;text-decoration:none;color:var(--ink)}
.logo small{display:block;font-size:.62rem;letter-spacing:.16em;color:var(--ink-soft);font-weight:400;margin-top:2px}
nav.site a{margin-left:18px;text-decoration:none;color:var(--ink-soft);font-size:.9rem}
nav.site a:hover{color:var(--accent-ink)}

.hero{padding:76px 0 60px;border-bottom:1px solid var(--line)}
.hero h1{font-size:clamp(1.7rem,4.6vw,2.7rem);line-height:1.5;margin:0 0 18px;font-weight:700}
.hero p.lead{font-size:1.06rem;color:var(--ink-soft);margin:0 0 8px;max-width:44em}

h2{font-size:1.32rem;margin:56px 0 18px;font-weight:700;
  padding-left:12px;border-left:3px solid var(--accent)}
h3{font-size:1.05rem;margin:28px 0 8px;font-weight:700}
p{margin:0 0 14px}

.pts{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin:24px 0 0}
.pt{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:22px}
.pt h3{margin:0 0 6px;font-size:1rem}
.pt p{margin:0;font-size:.94rem;color:var(--ink-soft)}

.cards{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));margin:24px 0 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;overflow:hidden;
  display:flex;flex-direction:column}
.card .ph{aspect-ratio:4/3;background:#efeae2;display:flex;align-items:center;justify-content:center;
  color:#b3a892;font-size:.82rem}
.card .in{padding:20px;display:flex;flex-direction:column;gap:6px;flex:1}
.card h3{margin:0;font-size:1.12rem}
.card .reg{font-size:.82rem;color:var(--ink-soft);letter-spacing:.08em}
.card dl{margin:8px 0 0;font-size:.9rem;color:var(--ink-soft)}
.card dl div{display:flex;gap:10px;padding:3px 0}
.card dl dt{flex:0 0 4.4em;color:#8c8477}
.card dl dd{margin:0}
.card .btnrow{margin-top:auto;padding-top:16px;display:flex;gap:10px;flex-wrap:wrap}

.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;
  padding:12px 22px;border-radius:6px;font-size:.94rem;font-weight:700;border:1px solid var(--accent)}
.btn:hover{background:var(--accent-ink)}
.btn.ghost{background:transparent;color:var(--accent-ink)}
.btn.ghost:hover{background:#f2ece3}

table.spec{width:100%;border-collapse:collapse;margin:18px 0;font-size:.95rem}
table.spec th,table.spec td{border-bottom:1px solid var(--line);padding:13px 4px;text-align:left;vertical-align:top}
table.spec th{width:8.5em;color:var(--ink-soft);font-weight:400;white-space:nowrap}

.faq details{background:var(--card);border:1px solid var(--line);border-radius:8px;
  padding:2px 18px;margin:0 0 10px}
.faq summary{cursor:pointer;padding:14px 0;font-weight:700;font-size:.98rem}
.faq details p{margin:0 0 14px;color:var(--ink-soft);font-size:.95rem}

.note{background:#f4efe7;border:1px solid var(--line);border-radius:8px;padding:16px 18px;
  font-size:.92rem;color:var(--ink-soft)}

footer.site{margin-top:72px;border-top:1px solid var(--line);padding:34px 0 46px;
  font-size:.87rem;color:var(--ink-soft)}
footer.site a{color:var(--ink-soft);text-decoration:none;margin-right:16px}
footer.site a:hover{text-decoration:underline}
footer.site .cp{margin-top:18px;font-size:.8rem;color:#9a9287}

.crumb{font-size:.82rem;color:var(--ink-soft);padding:16px 0 0}
.crumb a{color:var(--ink-soft);text-decoration:none}

@media(max-width:620px){
  .hero{padding:48px 0 40px}
  nav.site a{margin:0 14px 0 0;font-size:.84rem}
  header.site .wrap{padding-top:10px;padding-bottom:10px}
}