:root{--ink:#1c1c26;--muted:#6c6873;--paper:#fffdf9;--line:#e8e2dc;--pink:#c52aa0;--navy:#171722;--soft:#f8f3fb}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans JP",sans-serif;line-height:1.9}
.article-header{position:sticky;top:0;z-index:100;background:rgb(23 23 34/.96);border-bottom:1px solid #36333d}
.article-header__inner{max-width:1080px;margin:auto;padding:12px 18px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.article-logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:#fff;font-weight:800}
.article-logo img{width:31px;height:31px;object-fit:contain}
.article-header__cta{color:#f18bd1;border:2px solid #c52aa0;border-radius:999px;padding:6px 12px;text-decoration:none;font-size:12px;font-weight:800;white-space:nowrap}
.article-shell{width:min(900px,calc(100% - 32px));margin:30px auto 72px}
.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:inherit}
.article-category{display:inline-flex;padding:5px 12px;border-radius:999px;color:#fff;font-size:12px;font-weight:800}
.article-title{font-family:"Zen Maru Gothic",sans-serif;font-size:clamp(29px,6vw,47px);line-height:1.35;margin:16px 0 12px}
.article-meta{display:flex;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:12px}
.article-lead{font-size:clamp(16px,3.5vw,19px);font-weight:700;line-height:1.8;margin:28px 0}
.article-hero{margin:26px 0;border-radius:24px;padding:34px 24px;color:#fff;min-height:210px;display:flex;align-items:flex-end}
.article-hero p{font-family:"Zen Maru Gothic",sans-serif;font-size:clamp(21px,4vw,30px);line-height:1.5;font-weight:800;margin:0}
.article-toc{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px 22px;margin:30px 0}
.article-toc strong{display:block;margin-bottom:8px}
.article-toc ol{margin:0;padding-left:1.4em}
.article-toc a{color:#51475a;text-decoration:none}
.article-body{font-size:16px}
.article-body h2{font-family:"Zen Maru Gothic",sans-serif;font-size:clamp(23px,4vw,31px);line-height:1.5;margin:58px 0 18px;padding-left:14px;border-left:6px solid var(--accent,#c52aa0)}
.article-body h3{font-size:19px;line-height:1.55;margin:34px 0 12px}
.article-body p{margin:0 0 22px}
.article-body li{margin:.45em 0}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px;text-align:left;vertical-align:top}
.article-body th{background:#f5f1f6}
.voice{display:grid;grid-template-columns:52px 1fr;gap:12px;padding:18px;margin:26px 0;border-radius:18px;border:1px solid var(--line);background:#fff}
.voice img{width:52px;height:52px;object-fit:contain}
.voice strong{display:block;font-size:13px;margin-bottom:4px}
.voice p{margin:0}
.voice--mimi{border-color:#f2bbdf;background:#fff7fc}
.voice--rami{border-color:#d7c58d;background:#fffdf5}
.article-box{padding:20px 22px;border-radius:18px;margin:28px 0;background:#fff;border:2px solid var(--accent,#c52aa0)}
.article-box h3{margin-top:0}
.article-faq{margin:42px 0}
.article-faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 18px;margin:10px 0}
.article-faq summary{cursor:pointer;font-weight:700;padding:15px 0}
.article-faq details p{padding:0 0 15px;margin:0;color:#4e4953}
.article-box--caution{border-color:#d9a135;background:#fffaf0}
.article-box--conclusion{background:#f8f0fa}
.fit-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:24px 0}
.fit-grid>div{padding:18px;border:1px solid var(--line);border-radius:16px;background:#fff}
.fit-grid h3{margin-top:0}
.primary-cta{margin:50px 0;padding:26px;border-radius:22px;background:var(--navy);color:#fff;text-align:center}
.primary-cta p{margin:0 0 16px}
.primary-cta a{display:inline-block;padding:13px 22px;border-radius:999px;color:#fff;background:linear-gradient(135deg,#d42bae,#b80083);text-decoration:none;font-weight:800}
.related{border-top:1px solid var(--line);padding-top:30px}
.related h2{font-family:"Zen Maru Gothic",sans-serif}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.related a{display:block;padding:15px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--ink);text-decoration:none;font-weight:700}
.article-footer{padding:30px 20px;background:var(--navy);color:#aaa;text-align:center;font-size:11px}

@media(max-width:640px){.article-shell{width:min(100% - 24px,900px);margin-top:20px}
.article-title{font-size:29px}
.article-hero{min-height:170px;padding:24px 18px;border-radius:18px}
.article-toc{padding:17px}
.article-body{font-size:15.5px;line-height:1.9}
.article-body h2{margin-top:46px}
.voice{grid-template-columns:43px 1fr;padding:15px}
.voice img{width:43px;height:43px}
.fit-grid,.related-grid{grid-template-columns:1fr}
.article-body table{display:block;overflow-x:auto;white-space:normal}
.article-header__inner{padding:10px 12px}
}