.Header_header__MvnS2{border-bottom:1px solid var(--line);background:linear-gradient(90deg,rgba(239,246,255,.98),rgba(255,247,237,.98))}.Header_inner__ggL_E{width:min(100% - 32px,var(--max));margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}.Header_logo__j7oID{color:#1e3a8a;font-size:1.08rem;font-weight:800}.Header_nav__EE71E{display:flex;flex-wrap:wrap;gap:16px;color:#334155;font-size:.95rem;font-weight:700}.Header_nav__EE71E a:hover{color:var(--brand-dark)}@media (max-width:640px){.Header_inner__ggL_E{align-items:flex-start;flex-direction:column;width:min(100% - 24px,var(--max))}}.Footer_footer__UaG1g{border-top:1px solid var(--line);background:linear-gradient(180deg,#eff6ff,#fff7ed)}.Footer_inner__ACAek{width:min(100% - 32px,var(--max));margin:0 auto;padding:26px 0;color:var(--muted);font-size:.92rem}.Footer_links__oDyjI{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:10px}.Footer_links__oDyjI a:hover{color:var(--brand-dark)}:root{--bg:#ffffff;--text:#1f2937;--muted:#64748b;--line:#e5e7eb;--soft:#f8fafc;--brand:#2563eb;--brand-dark:#1d4ed8;--max:1120px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f8fbff;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Yu Gothic,Meiryo,sans-serif;line-height:1.8}a{color:inherit;text-decoration:none}a:hover{color:var(--brand-dark)}::selection{background:#bfdbfe}.container{width:min(100% - 32px,var(--max))}.container,.containerNarrow{margin:0 auto;padding:40px 0 56px}.containerNarrow{width:min(100% - 32px,880px)}.hero{border-bottom:1px solid var(--line);background:linear-gradient(135deg,#eff6ff,#ffffff 58%,#fff7ed)}.heroInner{width:min(100% - 32px,var(--max));margin:0 auto;padding:56px 0 64px}.eyebrow{margin:0 0 10px;color:var(--brand-dark);font-size:.9rem;font-weight:700}.heroTitle{max-width:760px;margin:0;color:#0f172a;font-size:clamp(2rem,5vw,3.2rem);line-height:1.25}.heroLead{max-width:780px;margin:20px 0 0;color:#475569}.section{margin-top:48px}.sectionHeader{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px}.sectionTitle{margin:0 0 18px;color:#0f172a;font-size:1.55rem;line-height:1.4}.sectionHeader .sectionTitle{margin-bottom:0}.grid3{grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:20px}.grid3,.grid4{display:grid;gap:20px}.grid4{grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:20px}.lead{margin:0 0 28px;color:#475569}.primaryLink,.secondaryLink{display:inline-block;border-radius:6px;padding:10px 16px;font-size:.95rem;font-weight:700}.primaryLink{background:var(--brand);color:#fff}.primaryLink:hover{background:var(--brand-dark);color:#fff}.secondaryLink{border:1px solid var(--line);color:#334155}.secondaryLink:hover{background:var(--soft)}.buttonGroup{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.textLink{color:var(--brand-dark);font-size:.95rem;font-weight:700}.staticArticle{color:#334155}.staticArticle header{margin-bottom:28px}.staticArticle h1{margin:0 0 8px;color:#0f172a;font-size:2rem;line-height:1.35}.staticArticle h2{margin:30px 0 10px;color:#0f172a;font-size:1.35rem}.meta{color:var(--muted);font-size:.9rem}.notFound{width:min(100% - 32px,720px);margin:0 auto;padding:80px 0;text-align:center}.articleShell{width:min(100% - 32px,var(--max));margin:0 auto;padding:40px 0 56px}.article{max-width:none;margin:0}.articleHeader{margin-bottom:32px}.articleTitle{margin:0;color:#0f172a;font-size:clamp(2rem,4vw,2.7rem);line-height:1.35}.articleIntro,.paragraph{color:#334155}.articleIntro{margin-top:20px}.articleHeroImage{display:block;width:100%;aspect-ratio:16/9;height:auto;margin:24px 0 0;border-radius:14px;background:#eff6ff;object-fit:cover;box-shadow:0 16px 36px rgba(30,64,175,.12)}.articleSection{margin-bottom:40px}.articleSectionTitle{margin:0 0 16px;border-bottom:1px solid var(--line);padding-bottom:8px;color:#0f172a;font-size:1.45rem}.noteList{margin:16px 0 0;border:1px solid var(--line);border-radius:8px;background:#fff;padding:18px 22px;color:#334155;list-style:none}.noteList li+li{margin-top:6px}.productGrid{grid-template-columns:repeat(3,minmax(0,1fr))}.detailList,.productGrid{display:grid;grid-gap:16px;gap:16px}.selectionGrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:16px;gap:16px}.detailCard{border:1px solid var(--line);border-radius:8px;background:#fff;padding:18px}.detailCard h3{margin:0 0 8px;color:#0f172a;font-size:1.15rem}.selectionCard{display:grid;grid-gap:14px;gap:14px;align-content:start}.selectionBlock{display:grid;grid-gap:4px;gap:4px}.selectionLabel{margin:0;color:var(--brand-dark);font-size:.82rem;font-weight:800}.selectionBlock .paragraph{margin:0;line-height:1.8}.related{margin-top:48px;border-top:1px solid var(--line);padding-top:28px}.badgeRow{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.badge{background:#eff6ff;color:var(--brand-dark)}.badge,.badgeSoft{display:inline-block;border-radius:999px;padding:4px 10px;font-size:.78rem;font-weight:700}.badgeSoft{background:#f1f5f9;color:#475569}.affiliateButtons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:8px;gap:8px;margin-top:18px}.affiliateButton{border-radius:6px;padding:9px 10px;color:#fff;font-size:.88rem;font-weight:700;text-align:center}.affiliateButton:hover{color:#fff;opacity:.9}.amazon{background:#1f2937}.rakuten{background:#b91c1c}.yahoo{background:#9a3412}@media (max-width:640px){.affiliateButtons{grid-template-columns:1fr}}@media (max-width:900px){.grid3,.grid4,.productGrid,.selectionGrid{grid-template-columns:1fr 1fr}}@media (max-width:640px){.articleShell,.container,.containerNarrow{width:min(100% - 24px,var(--max));padding-top:28px}.heroInner{width:min(100% - 24px,var(--max));padding:40px 0 44px}.sectionHeader{align-items:flex-start;flex-direction:column}.grid3,.grid4,.productGrid,.selectionGrid{grid-template-columns:1fr}.articleTitle,.staticArticle h1{font-size:1.75rem}}