:root{
  --primary:#5d18eb; --primary-soft:rgba(93,24,235,.08);
  --ink:#1a1a1a; --sub:#5a5a5a; --bg-dark:#0a0a0a;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans JP',-apple-system,sans-serif;color:var(--ink);background:#fff;line-height:1.9;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--primary)}

/* ===== NAV ===== */
.gnav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  padding:0 5%;height:72px;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(0,0,0,.06)}
.gnav .logo img{height:40px;width:auto;display:block}
.gnav .nav-cta{background:linear-gradient(135deg,var(--primary),#8a4fff);color:#fff;text-decoration:none;
  font-weight:700;font-size:14px;padding:10px 22px;border-radius:30px;transition:transform .2s}
.gnav .nav-cta:hover{transform:translateY(-2px)}

/* ===== ARTICLE ===== */
.article{max-width:760px;margin:0 auto;padding:60px 24px 32px}
.breadcrumb{font-size:13px;color:#9a9a9a;margin-bottom:22px}
.breadcrumb a{color:#9a9a9a;text-decoration:none}
.breadcrumb a:hover{color:var(--primary)}
.cat{display:inline-block;font-family:'Outfit',sans-serif;font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--primary);background:var(--primary-soft);padding:6px 14px;border-radius:20px}
h1.title{font-size:clamp(27px,5vw,38px);font-weight:900;line-height:1.45;margin:18px 0}
.lead{font-size:17px;color:var(--sub);line-height:1.95;font-weight:500}
.meta{display:flex;align-items:center;gap:12px;margin-top:26px;padding-bottom:26px;border-bottom:1px solid rgba(0,0,0,.08)}
.meta img{width:44px;height:44px;border-radius:50%;object-fit:cover;object-position:top center}
.meta b{font-size:14px}
.meta span{font-size:12px;color:#999;display:block}

.body h2{font-size:22px;font-weight:800;margin:46px 0 14px;line-height:1.5;padding-left:16px;border-left:4px solid var(--primary)}
.body h3{font-size:17px;font-weight:700;margin:26px 0 8px}
.body p{margin:14px 0;font-size:16px;color:#333}
.body ul,.body ol{margin:14px 0;padding-left:24px}
.body li{margin:9px 0;font-size:16px;color:#333}
.body strong{font-weight:700;color:var(--ink)}

.callout{background:var(--primary-soft);border-radius:16px;padding:24px 26px;margin:32px 0}
.callout .k{font-family:'Outfit',sans-serif;font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--primary)}
.callout p{margin:8px 0 0;font-size:15px;color:#333}

.cta-box{margin:50px 0 8px;background:var(--bg-dark);border-radius:22px;padding:42px 32px;text-align:center;color:#fff;
  background-image:radial-gradient(circle at 18% 8%,rgba(93,24,235,.4),transparent 55%)}
.cta-box h3{font-size:22px;font-weight:800;margin-bottom:10px}
.cta-box p{color:#cfcfd6;font-size:14px;margin-bottom:24px;line-height:1.7}
.cta-box a{display:inline-flex;align-items:center;gap:10px;background:#fff;color:var(--bg-dark);text-decoration:none;
  font-weight:700;padding:15px 34px;border-radius:30px;transition:transform .2s}
.cta-box a:hover{transform:translateY(-2px)}
.cta-box svg{width:20px;height:20px;stroke:currentColor;fill:none}

.related{max-width:760px;margin:0 auto;padding:18px 24px 60px}
.related h4{font-size:13px;font-family:'Outfit',sans-serif;letter-spacing:.1em;color:#999;margin-bottom:14px}
.related-list{display:flex;flex-direction:column;gap:10px}
.related-list a{display:block;padding:16px 20px;border:1px solid rgba(0,0,0,.1);border-radius:12px;
  text-decoration:none;color:var(--ink);font-weight:600;font-size:15px;transition:all .2s}
.related-list a:hover{border-color:var(--primary);background:var(--primary-soft)}

/* ===== FOOTER ===== */
.gfoot{background:#050505;color:rgba(255,255,255,.4);text-align:center;padding:40px 5%;font-size:12px;line-height:1.9}
.gfoot .flogo img{height:34px;filter:brightness(0) invert(1);opacity:.6;margin-bottom:12px}
.gfoot a{color:rgba(255,255,255,.55)}

/* ===== GUIDE HUB ===== */
.hub{max-width:940px;margin:0 auto;padding:64px 24px}
.hub-head{text-align:center;margin-bottom:46px}
.hub-head .cat{margin-bottom:16px}
.hub-head h1{font-size:clamp(28px,5vw,40px);font-weight:900;margin-bottom:14px;line-height:1.4}
.hub-head p{color:var(--sub);font-size:16px}
.hub-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.hub-card{display:flex;flex-direction:column;gap:12px;padding:30px 28px;border:1px solid rgba(0,0,0,.09);
  border-radius:18px;text-decoration:none;color:inherit;transition:all .25s}
.hub-card:hover{border-color:var(--primary);box-shadow:0 14px 34px rgba(93,24,235,.1);transform:translateY(-3px)}
.hub-card .c{font-family:'Outfit',sans-serif;font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--primary)}
.hub-card h2{font-size:19px;font-weight:800;line-height:1.5}
.hub-card p{font-size:14px;color:#666;line-height:1.8;flex:1}
.hub-card .go{color:var(--primary);font-weight:700;font-size:13px}

@media(max-width:640px){
  .article,.related{padding-left:20px;padding-right:20px}
  .body h2{font-size:20px}
}