:root{--gnn3-paper:#f7f4ef;--gnn3-ink:#24211c;--gnn3-verm:#d0402b;--gnn3-dim:#7d766a;--gnn3-line:#e4ded2;--gnn3-btn:#d0402b}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--gnn3-paper);color:var(--gnn3-ink);font:16px/1.9 "Zen Kaku Gothic New",sans-serif}
.gnn3-wrap{max-width:720px;margin:0 auto;padding:0 22px}
a{color:var(--gnn3-verm)}
.gnn3-head{padding:34px 0 0}
.gnn3-head .gnn3-wrap{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.gnn3-logo{font-family:"Shippori Mincho",serif;font-weight:600;font-size:24px;color:var(--gnn3-ink);text-decoration:none;display:flex;align-items:center;gap:12px}
.gnn3-seal{width:34px;height:34px;background:var(--gnn3-verm);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:16px;font-family:"Shippori Mincho",serif}
.gnn3-nav{display:flex;flex-direction:column;gap:6px;font-size:12px;letter-spacing:2px;text-align:right}
.gnn3-nav a{color:var(--gnn3-dim);text-decoration:none}
.gnn3-nav a:hover{color:var(--gnn3-verm)}
.gnn3-hero{padding:80px 0 40px;position:relative}
.gnn3-hero::before{content:"";position:absolute;left:-40px;top:70px;bottom:30px;width:1px;background:var(--gnn3-ink);opacity:.25}
.gnn3-mono{font-size:11px;letter-spacing:5px;text-transform:uppercase;color:var(--gnn3-verm)}
.gnn3-hero h1{font-family:"Shippori Mincho",serif;font-weight:600;font-size:clamp(30px,5vw,46px);line-height:1.34;margin:18px 0 16px;letter-spacing:1px}
.gnn3-lead{color:var(--gnn3-dim);max-width:560px}
.gnn3-btn{display:inline-block;background:var(--gnn3-ink);color:var(--gnn3-paper);padding:13px 34px;text-decoration:none;letter-spacing:3px;font-size:13px;margin:28px 14px 0 0}
.gnn3-btn:hover{background:var(--gnn3-verm)}
.gnn3-btn--o{background:transparent;color:var(--gnn3-ink);border:1px solid var(--gnn3-ink)}
.gnn3-stones{display:flex;flex-wrap:wrap;gap:1px;background:var(--gnn3-line);border:1px solid var(--gnn3-line);margin-top:44px}
.gnn3-stones div{flex:1;min-width:140px;background:var(--gnn3-paper);padding:18px 20px;text-align:center}
.gnn3-stones b{font-family:"Shippori Mincho",serif;font-size:22px;display:block}
.gnn3-stones span{font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--gnn3-dim)}
.gnn3-enso{text-align:center;color:var(--gnn3-ink);opacity:.5;font-size:22px;margin:40px 0 0}
section{padding:38px 0 4px}
.gnn3-tick{width:26px;height:3px;background:var(--gnn3-verm);margin-bottom:16px}
section h2{font-family:"Shippori Mincho",serif;font-weight:600;font-size:clamp(23px,3.2vw,30px);margin:0 0 14px;letter-spacing:1px}
section h3{font-family:"Shippori Mincho",serif;font-size:19px}
.gnn3-tbl-wrap{overflow-x:auto;margin:18px 0}
table{border-collapse:collapse;width:100%;font-size:14.5px}
caption{text-align:left;color:var(--gnn3-dim);font-size:12px;letter-spacing:2px;padding-bottom:10px}
th{border-top:1px solid var(--gnn3-ink);border-bottom:1px solid var(--gnn3-ink);font-family:"Shippori Mincho",serif;font-weight:600;padding:10px 12px;text-align:left;font-size:14px}
td{border-bottom:1px solid var(--gnn3-line);padding:11px 12px}
ul{list-style:none;padding:0}
ul li{padding-left:24px;position:relative;margin:10px 0}
ul li::before{content:"・";position:absolute;left:0;color:var(--gnn3-verm)}
ol{padding-left:24px}ol li{margin:10px 0}ol li::marker{font-family:"Shippori Mincho",serif;color:var(--gnn3-verm)}
.gnn3-note{border-left:3px solid var(--gnn3-verm);padding:4px 0 4px 20px;color:var(--gnn3-dim);margin:20px 0}
.gnn3-faqz{border-bottom:1px solid var(--gnn3-line)}
.gnn3-faqz summary{cursor:pointer;padding:17px 2px;list-style:none;font-family:"Shippori Mincho",serif;font-size:17px}
.gnn3-faqz summary::before{content:"問 — ";color:var(--gnn3-verm);font-size:14px}
.gnn3-faqz div{padding:0 2px 18px;color:var(--gnn3-dim)}
.gnn3-faqz div::before{content:"答 — ";color:var(--gnn3-ink)}
footer{margin-top:60px;border-top:1px solid var(--gnn3-ink);padding:28px 0;color:var(--gnn3-dim);font-size:12.5px;letter-spacing:1px}
@media(max-width:640px){.gnn3-nav{display:none}.gnn3-hero::before{display:none}}

.gnn3-cta-js{-webkit-appearance:none;appearance:none;font:inherit;line-height:inherit;cursor:pointer;text-align:center;text-decoration:none}