:root{
  --bg:#fffafb;
  --card:#ffffff;
  --sub-bg:#fff5f7;
  --sub-bg-2:#fff0f4;
  --border:#f3e3e8;
  --border-strong:#eec9d2;
  --text:#333333;
  --text-dark:#222222;
  --muted:#777777;
  --accent:#e58aa3;
  --accent-dark:#c45c7b;
  --max-width:860px;
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic","Meiryo",sans-serif;
  line-height:1.9;
  -webkit-text-size-adjust:100%;
}
a{color:var(--accent-dark)}
img{max-width:100%;height:auto}
main{max-width:860px;margin:auto;padding:28px}
.breadcrumb{font-size:14px;color:#9a8890;margin-bottom:18px}
.breadcrumb a{color:#9a8890;text-decoration:none}
.breadcrumb a:hover{text-decoration:underline}
h1{margin:0 0 12px;font-size:34px;line-height:1.45;color:var(--text-dark);font-weight:700}
h2{margin:48px 0 18px;padding-left:14px;border-left:5px solid var(--accent);font-size:26px;line-height:1.5;color:var(--text-dark)}
h3{margin:34px 0 12px;font-size:21px;line-height:1.6;color:var(--accent-dark)}
p{margin:0 0 18px;font-size:16px}
ul,ol{margin:0 0 22px 1.2em;padding:0}
li{margin-bottom:10px;font-size:16px}
.lead{margin:0;font-size:17px;background:#fff5f7;padding:24px;border-radius:18px}
.point-box{background:#fff0f4;padding:24px;border-radius:18px;margin:30px 0;border:1px solid #eec9d2}
.summary-box{background:#fff7fa;padding:24px;border-radius:18px;margin:30px 0}
.cta-box{margin-top:42px;text-align:center;background:linear-gradient(135deg,#fff3f7 0%,#fffafd 100%);border:1px solid #f1d5de;padding:36px;border-radius:22px}
.cta-box h2{border:0;padding:0;margin:0 0 12px;font-size:28px}
.related-box{background:#fff;border:1px solid #f3e3e8;border-radius:18px;padding:24px;margin-top:50px}
.related-box ul{margin-left:1.2em}
.related-box a{text-decoration:none}
.related-box a:hover{text-decoration:underline}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:18px}
.btn{display:inline-block;min-width:220px;padding:14px 24px;border-radius:999px;text-decoration:none;font-size:15px;font-weight:700;box-sizing:border-box;text-align:center;transition:transform .2s ease,opacity .2s ease,background .2s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:#ffffff}
.btn-primary:hover{opacity:.92}
.btn-secondary{background:#ffffff;color:var(--accent-dark);border:1px solid var(--accent)}
.btn-secondary:hover{background:#fff0f4}
.back-top{margin-top:12px;text-align:center;font-size:14px}
.back-top a{text-decoration:none}
.back-top a:hover{text-decoration:underline}
.article-page{padding:20px 20px 72px;max-width:none;margin:0}
.article-wrap{max-width:var(--max-width);margin:0 auto}
.article-main{background:transparent}
.article-hero{background:var(--card);border:1px solid var(--border);border-radius:24px;padding:26px 24px;margin-bottom:28px}
.article-label{display:inline-block;margin-bottom:14px;padding:6px 12px;border-radius:999px;background:#ffe9ef;color:var(--accent-dark);font-size:13px;font-weight:700;letter-spacing:.04em}
.article-meta{font-size:14px;color:var(--muted);margin-bottom:16px}
.toc,.point-box,.summary-box,.faq-box,.cta-box,.related-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin:0 0 28px}
.toc{background:var(--sub-bg-2);border-color:var(--border-strong)}
.point-box{background:var(--sub-bg-2);border-color:var(--border-strong)}
.summary-box{background:#fff7fa}
.toc-title,.box-title{display:block;margin-bottom:10px;font-size:18px;font-weight:700;color:var(--accent-dark)}
.toc ol{margin:0;padding-left:1.25em}
.toc li{margin-bottom:8px}
.toc a{text-decoration:none}
.toc a:hover{text-decoration:underline}
.faq-item + .faq-item{margin-top:18px;padding-top:18px;border-top:1px solid #f2dbe2}
.faq-q{margin:0 0 8px;font-weight:700;color:var(--text-dark)}
@media (max-width:767px){
  main{padding:24px 16px 56px}
  .article-page{padding:16px 16px 56px}
  .article-hero,.toc,.point-box,.summary-box,.faq-box,.cta-box,.related-box{padding:20px 18px}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:19px}
  .lead{font-size:16px}
  .btn{width:100%;min-width:0}
}
/* ===== blog index 専用 ===== */

.article-grid{
  display:grid;
  gap:20px;
  margin-bottom:40px;
}

@media(min-width:768px){
  .article-grid{
    grid-template-columns:1fr 1fr;
  }
}

.index-card{
  display:block;
  background:#fff;
  border:1px solid #eee;
  border-radius:18px;
  padding:22px;
  text-decoration:none;
  transition:.25s;
}

.index-card:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(0,0,0,.05);
}

.card-category{
  display:inline-block;
  font-size:12px;
  background:#ffe8ef;
  padding:4px 10px;
  border-radius:20px;
  margin-bottom:10px;
}

.index-card h3{
  margin:0 0 10px;
  font-size:20px;
}

.index-card p{
  margin:0 0 14px;
  font-size:14px;
  color:#666;
}

.card-link{
  font-size:13px;
  font-weight:700;
  color:#d55;
}

.intro-box{
  background:#fff;
  border-radius:18px;
  padding:22px;
  margin-bottom:30px;
  border:1px solid #eee;
}
.article-mid-cta{
margin:30px 0;
padding:20px;
border-radius:18px;
background:#fff7fa;
text-align:center;
}