:root{
  --bg:#f5f3ee;
  --surface:#ffffff;
  --text:#252b33;
  --muted:#5c6672;
  --line:#d8d3c7;
  --accent:#6f6aa8;
  --accent-deep:#56518f;
  --warm:#b85c2f;
  --focus:#1c6d57;
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--bg);color:var(--text);line-height:1.85;overflow-wrap:anywhere;}
a{color:var(--accent-deep);text-underline-offset:3px;}
a:hover{text-decoration-thickness:2px;}
a:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:3px;}
.guide-site-header{min-height:58px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:8px max(18px,calc((100% - 980px)/2));background:#222b38;color:#fff;}
.guide-brand,.guide-header-link{display:inline-flex;align-items:center;min-height:44px;color:#fff;font-weight:700;text-decoration:none;}
.guide-header-link{padding:0 16px;border:1px solid rgba(255,255,255,.55);border-radius:999px;}
.guide-main{width:min(100% - 36px,980px);margin:0 auto;padding:18px 0 56px;}
.breadcrumb{font-size:.9rem;color:var(--muted);}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none;}
.breadcrumb li:not(:last-child)::after{content:"›";margin-left:6px;color:#7c8490;}
.operationDisclosure{margin:16px 0;padding:10px 14px;border:1px solid #c7b875;border-radius:8px;background:#fffbed;color:#4d4938;font-size:.9rem;}
.guide-document{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:clamp(22px,4vw,52px);box-shadow:0 14px 38px rgba(43,48,56,.08);}
.guide-title{padding-bottom:30px;border-bottom:1px solid var(--line);}
.eyebrow{margin:0 0 6px;color:var(--warm);font-weight:700;letter-spacing:.08em;}
h1{margin:.15em 0 .55em;font-size:clamp(1.75rem,4.5vw,2.65rem);line-height:1.35;}
h2{margin:0 0 14px;font-size:clamp(1.25rem,3vw,1.6rem);line-height:1.5;color:#34385a;}
section{padding:34px 0;border-bottom:1px solid var(--line);}
ul,ol{padding-left:1.45em;}
li+li{margin-top:.55em;}
.guide-cta{display:inline-flex;align-items:center;justify-content:center;min-height:48px;margin-top:14px;padding:10px 20px;border-radius:8px;background:var(--accent-deep);color:#fff;font-weight:700;text-decoration:none;}
.guide-cta:hover{background:#454174;}
.example-box{padding:18px 20px;border-left:5px solid var(--warm);border-radius:8px;background:#fff7f0;}
dl{display:grid;grid-template-columns:minmax(150px,220px) 1fr;gap:12px 20px;margin:0;}
dt{font-weight:700;color:#34385a;}
dd{margin:0;}
details{margin:12px 0;border:1px solid var(--line);border-radius:10px;background:#faf9f6;}
summary{min-height:48px;display:flex;align-items:center;padding:10px 16px;font-weight:700;cursor:pointer;}
details p{margin:0;padding:0 16px 16px;}
.guide-document-footer{padding-top:34px;text-align:center;}
.guide-document-footer p{margin-top:20px;}
.affiliateFrame[hidden]{display:none!important;}
@media (max-width:640px){
  .guide-site-header{padding-inline:12px;}
  .guide-brand{font-size:.95rem;}
  .guide-header-link{padding-inline:12px;font-size:.9rem;}
  .guide-main{width:calc(100% - 24px);padding-top:12px;}
  .guide-document{border-radius:12px;padding:22px 18px;}
  dl{grid-template-columns:1fr;gap:4px;}
  dd+dt{margin-top:14px;}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;}}