:root{--navy:#1b2a4a;--navy-light:#23407a;--accent:#4f6ef7;--text:#1f2430;--text-sub:#6b7280;--bg:#ffffff;--bg-soft:#f5f7fb;--border:#e5e9f2;--radius:10px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{color:var(--text);background:var(--bg);line-height:1.85;-webkit-font-smoothing:antialiased;font-family:var(--font-noto),"Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",Meiryo,system-ui,sans-serif}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}.container{max-width:1080px;margin:0 auto;padding:0 20px}.site-header{border-bottom:1px solid var(--border);background:#fff;position:-webkit-sticky;position:sticky;top:0;z-index:10}.site-header .inner{justify-content:space-between;gap:24px;height:80px}.brand,.site-header .inner{display:flex;align-items:center}.brand{gap:14px;flex:none}.logo-tag{font-size:14px;font-weight:800;color:var(--navy);border-left:1px solid var(--border);padding-left:14px;line-height:1.2;white-space:nowrap;letter-spacing:.04em}@media (max-width:600px){.logo-tag{font-size:11.5px;padding-left:10px}.brand{gap:10px}}.logo-img{width:180px;height:auto;display:block}@media (max-width:600px){.logo-img{width:148px}.site-header .inner{height:68px}}.header-cta{font-size:13px;font-weight:700;color:#fff;background:var(--navy);padding:10px 18px;border-radius:999px;transition:opacity .2s;flex:none;white-space:nowrap}.header-cta:hover{opacity:.85}.page-hero{background:var(--bg-soft);padding:40px 0 32px;margin-bottom:40px}.page-hero h1{font-size:26px;color:var(--navy)}.page-hero p{color:var(--text-sub);font-size:14px;margin-top:6px}.cat-nav{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 0}.cat-nav a{font-size:13px;padding:6px 14px;border:1px solid var(--border);border-radius:999px;background:#fff;color:var(--text-sub)}.cat-nav a.active,.cat-nav a:hover{background:var(--navy);border-color:var(--navy);color:#fff}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:28px;gap:28px;margin-bottom:64px}@media (max-width:900px){.card-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:600px){.card-grid{grid-template-columns:1fr}}.card{display:flex;flex-direction:column;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:#fff;transition:box-shadow .2s,transform .2s}.card:hover{box-shadow:0 8px 24px rgba(27,42,74,.12);transform:translateY(-2px)}.card .thumb{aspect-ratio:1200/630;background:var(--bg-soft);object-fit:cover;width:100%}.card .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1 1}.card .date{font-size:12px;color:var(--text-sub)}.card h2{font-size:15.5px;line-height:1.6;color:var(--text)}.card .meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-sub)}.badge{display:inline-block;font-size:11px;font-weight:600;color:var(--navy-light);background:#eef2fd;padding:3px 10px;border-radius:4px}.article-header{max-width:760px;margin:40px auto 0;padding:0 20px}.article-header h1{font-size:28px;line-height:1.5;color:var(--navy);margin:14px 0}.article-header .meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--text-sub);margin-bottom:24px}.article-eyecatch{max-width:760px;margin:0 auto 36px;padding:0 20px}.article-eyecatch img{border-radius:var(--radius);width:100%}.article-body{max-width:760px;margin:0 auto 72px;padding:0 20px;font-size:16px}.article-body h2{background:var(--navy-light);color:#fff;font-size:20px;line-height:1.5;padding:12px 18px;border-radius:6px;margin:44px 0 20px}.article-body h3{font-size:18px;color:var(--navy);border-left:4px solid var(--navy-light);padding-left:12px;margin:36px 0 14px}.article-body p{margin:0 0 1.2em}.article-body ol,.article-body ul{margin:0 0 1.4em;padding-left:1.6em}.article-body li{margin-bottom:.4em}.article-body img{border-radius:8px;margin:8px 0 20px}.article-body a{color:var(--accent);text-decoration:underline}.article-body blockquote{border-left:4px solid var(--border);background:var(--bg-soft);padding:14px 18px;margin:0 0 1.4em;border-radius:0 8px 8px 0;color:var(--text-sub)}.article-body hr{border:none;border-top:1px solid var(--border);margin:36px 0}.article-body table{border-collapse:collapse;width:100%;margin:0 0 1.6em;font-size:14.5px}.article-body td,.article-body th{border:1px solid var(--border);padding:9px 12px;text-align:left}.article-body th{background:var(--bg-soft)}.article-cta{max-width:760px;margin:0 auto 80px;padding:40px 32px;background:var(--navy);border-radius:var(--radius);color:#fff;text-align:center}.article-cta p{font-size:15px;margin-bottom:16px}.article-cta a{display:inline-block;background:#fff;color:var(--navy);font-weight:700;padding:12px 32px;border-radius:999px;font-size:14px}.g-nav{display:flex;align-items:center;gap:28px;margin:0 auto;font-size:15px;font-weight:900;color:#303439;line-height:1.4;white-space:nowrap}.g-nav a{transition:color .2s}.g-nav a:hover{color:var(--accent)}@media (max-width:900px){.g-nav{display:none}}.breadcrumb{font-size:12.5px;color:var(--text-sub);margin-bottom:18px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}.breadcrumb a:hover{color:var(--accent);text-decoration:underline}.breadcrumb .current{color:var(--text-sub);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:320px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;grid-gap:48px;gap:48px;align-items:stretch;padding-top:36px}.article-main .article-body,.article-main .article-cta,.article-main .article-eyecatch,.article-main .article-header{max-width:none;padding:0}.article-main .article-header{margin:0}.article-main .article-eyecatch{margin:0 0 32px}.article-main .article-body{margin:0 0 56px}.article-main .article-cta{margin:0 0 56px;padding:40px 32px}@media (max-width:600px){.article-main .article-cta{padding:28px 18px}.cta-buttons{flex-direction:column;align-items:stretch;gap:10px}.article-cta .cta-buttons a{width:100%;padding:14px 16px}}.article-body img.body-banner{display:block;max-width:520px;width:100%;margin:28px auto;border-radius:10px}.article-body img.body-banner-btn{max-width:440px}.article-body img.body-author-card{display:block;max-width:560px;width:100%;margin:36px auto 0}.body-banner-link{display:block;text-align:center}.body-banner-link img{transition:opacity .2s}.body-banner-link:hover img{opacity:.85}@media (max-width:960px){.article-layout{grid-template-columns:1fr;gap:40px}}.toc{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:18px 22px;margin-bottom:36px}.toc-title{font-weight:700;color:var(--navy);font-size:15px;margin-bottom:8px}.toc ol{padding-left:1.4em;font-size:14px}.toc li{margin:5px 0}.toc a{color:var(--text)}.toc a:hover{color:var(--accent);text-decoration:underline}.article-side{display:block}.side-inner{display:flex;flex-direction:column;gap:22px}@media (min-width:961px){.side-inner{position:-webkit-sticky;position:sticky;top:84px;max-height:calc(100vh - 104px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}}.side-box{border:1px solid var(--border);border-radius:var(--radius);padding:18px;background:#fff}.side-title{font-size:15px;color:var(--navy);border-bottom:2px solid var(--navy);padding-bottom:8px;margin-bottom:14px;text-align:center}.side-list{display:flex;flex-direction:column;gap:14px}.side-item{display:flex;gap:10px;align-items:flex-start}.side-item:hover .side-item-title{color:var(--accent)}.side-thumb{width:92px;min-width:92px;aspect-ratio:1200/630;object-fit:cover;border-radius:6px;background:var(--bg-soft);display:block}.side-body{display:flex;flex-direction:column;gap:4px}.side-item-title{font-size:12.5px;line-height:1.55;font-weight:600;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.side-date{font-size:11px;color:var(--text-sub)}.side-cta{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:18px;color:var(--text);text-align:center}.side-cta-title{font-weight:700;font-size:14px;color:var(--navy);margin-bottom:6px}.side-cta-text{font-size:12px;line-height:1.75;color:var(--text-sub);margin-bottom:12px;text-align:left}.side-cta a{display:block;background:var(--navy);color:#fff;font-weight:700;font-size:12.5px;padding:10px 12px;border-radius:999px}.side-cta a:hover{opacity:.88}.article-cta .cta-heading{font-size:18px;font-weight:700;margin-bottom:8px}.article-cta .cta-sub{font-size:13.5px;opacity:.9;margin-bottom:18px}.cta-buttons{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:14px}.article-cta a.cta-primary{background:#fff;color:var(--navy)}.article-cta a.cta-secondary{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6)}.article-cta .cta-tel{font-size:12.5px;opacity:.85;margin-bottom:0}.related{margin-top:24px}.related-title{font-size:20px;color:var(--navy);margin-bottom:20px;padding-left:12px;border-left:4px solid var(--navy)}.card .card-h{font-size:15.5px;line-height:1.6;color:var(--text)}.site-footer{border-top:1px solid var(--border);background:var(--bg-soft);padding:40px 0 24px;font-size:13px;color:var(--text-sub)}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;grid-gap:32px;gap:32px;padding-bottom:24px}@media (max-width:760px){.footer-grid{grid-template-columns:1fr}}.f-logo{width:168px;height:auto;display:block;margin-bottom:12px}.f-desc{font-size:12.5px;line-height:1.8}.f-col{display:flex;flex-direction:column;gap:8px}.f-head{font-weight:700;color:var(--text);margin-bottom:4px}.site-footer a:hover{color:var(--navy);text-decoration:underline}.copyright{border-top:1px solid var(--border);padding-top:18px;font-size:12px}