*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}:root{--navy: #1a3a5c;--navy-2: #112840;--blue: #2563a8;--blue-2: #1a4f8f;--blue-light: #e8f0fb;--sky: #3b82c4;--gold: #b8922a;--white: #ffffff;--bg: #f5f7fa;--ink: #1a2332;--ink-2: #3d4f63;--gray: #6b7c93;--line: #dde3eb}body{font-family:Noto Sans JP,Hiragino Kaku Gothic ProN,sans-serif;color:var(--ink);background:var(--white);line-height:1.8;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.wrap{max-width:1100px;margin:0 auto;padding:0 32px}header{position:sticky;top:0;z-index:200;background:var(--white);border-bottom:1px solid var(--line);box-shadow:0 1px 8px #0000000f}.hdr-inner{display:flex;align-items:center;justify-content:space-between;height:72px;padding:0 40px}.logo{display:flex;align-items:center;gap:12px}.logo-icon{width:44px;height:44px;object-fit:contain}.logo-bar{width:4px;height:34px;background:var(--blue);border-radius:2px}.logo-text .ja{font-size:14px;font-weight:700;color:var(--navy);letter-spacing:.04em;line-height:1.2}.logo-text .sub{font-size:10px;color:var(--gray);letter-spacing:.06em;margin-top:2px}.hdr-cta{background:var(--blue);color:var(--white);padding:9px 22px;font-size:13px;font-weight:700;letter-spacing:.04em;border:2px solid var(--blue);transition:.25s}.hdr-cta:hover{background:var(--blue-2);border-color:var(--blue-2)}.breadcrumb{padding:14px 0;border-bottom:1px solid var(--line);background:var(--bg)}.breadcrumb ol{display:flex;align-items:center;gap:8px;list-style:none;font-size:12px;color:var(--gray)}.breadcrumb a{color:var(--blue)}.breadcrumb a:hover{text-decoration:underline}.article-wrap{display:grid;grid-template-columns:1fr 300px;gap:56px;padding:56px 0 88px;align-items:start}.article-cat{display:inline-block;background:var(--blue-light);color:var(--blue);font-size:11px;font-weight:700;padding:3px 12px;margin-bottom:14px;letter-spacing:.08em}.article-title{font-family:"Noto Serif JP",serif;font-size:clamp(22px,3vw,34px);font-weight:700;color:var(--navy);line-height:1.55;letter-spacing:.03em;margin-bottom:16px}.article-meta{display:flex;align-items:center;gap:20px;font-size:13px;color:var(--gray);padding-bottom:20px;border-bottom:1px solid var(--line)}.author{display:flex;align-items:center;gap:8px}.author-dot{width:8px;height:8px;background:var(--blue);border-radius:50%}.article-eyecatch{width:100%;aspect-ratio:16/9;overflow:hidden;margin-bottom:40px;background:var(--blue-light)}.article-eyecatch img{width:100%;height:100%;object-fit:cover}.article-body{font-size:15.5px;line-height:2;color:var(--ink)}#article-body h2{font-family:"Noto Serif JP",serif!important;font-size:22px!important;font-weight:700!important;color:#1a3a5c!important;margin:52px 0 20px!important;padding:14px 18px!important;background:#eef5fb!important;border-left:5px solid #2563a8!important;border-radius:0 4px 4px 0!important;line-height:1.55!important;text-align:left!important;display:block!important}#article-body h3{font-size:18px!important;font-weight:700!important;color:#1a3a5c!important;margin:38px 0 14px!important;padding:10px 16px!important;background:#f4f8fc!important;border-left:3px solid #3b82c4!important;border-radius:0 4px 4px 0!important;line-height:1.55!important;text-align:left!important;display:block!important}#article-body h4{font-size:16px!important;font-weight:700!important;color:#1a3a5c!important;margin:28px 0 10px!important;padding:6px 12px!important;border-left:3px solid #dde3eb!important;text-align:left!important;display:block!important}.article-body h2,.article-body h3,.article-body h4{text-align:left!important}.article-body p{margin-bottom:20px}.article-body ul,.article-body ol{margin:0 0 20px 24px}.article-body li{margin-bottom:8px}.article-body strong{color:var(--navy);font-weight:700}.article-body a{color:var(--blue);text-decoration:underline}.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px}.article-body th{background:var(--navy);color:var(--white);padding:12px 16px;text-align:left;font-weight:700}.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);vertical-align:top}.article-body tr:nth-child(2n) td{background:var(--bg)}.article-body img{max-width:100%;height:auto;margin:24px auto;display:block}.article-cta{background:var(--navy);color:var(--white);padding:36px 40px;margin:48px 0}.article-cta h3{font-size:18px;font-weight:700;margin-bottom:12px;color:var(--white)}.article-cta p{font-size:14px;color:#ffffffbf;margin-bottom:20px;line-height:1.85}.article-cta a{display:inline-flex;align-items:center;gap:8px;background:var(--blue);color:var(--white);padding:13px 28px;font-weight:700;font-size:14px;letter-spacing:.06em;transition:.25s;text-decoration:none}.article-cta a:hover{background:var(--sky)}.article-tags{margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}.article-tags .label{font-size:12px;color:var(--gray);margin-bottom:10px}.tag-list{display:flex;flex-wrap:wrap;gap:8px}.tag{background:var(--bg);border:1px solid var(--line);font-size:12px;color:var(--ink-2);padding:4px 12px}.sidebar{position:sticky;top:88px}.sidebar-card{background:var(--bg);border:1px solid var(--line);border-top:3px solid var(--blue);padding:24px;margin-bottom:24px}.sidebar-card h4{font-size:13px;font-weight:700;color:var(--navy);margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--line);letter-spacing:.06em}.sidebar-profile p{font-size:13px;color:var(--ink-2);line-height:1.85;margin-bottom:12px}.sidebar-profile .creds{list-style:none}.sidebar-profile .creds li{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-2);padding:5px 0;border-bottom:1px solid var(--line)}.sidebar-profile .creds li:last-child{border:0}.sidebar-profile .dot{width:5px;height:5px;background:var(--blue);flex-shrink:0}.sidebar-cta-btn{display:block;text-align:center;background:var(--blue);color:var(--white);padding:14px;font-weight:700;font-size:14px;margin-top:4px;transition:.25s;letter-spacing:.04em;text-decoration:none}.sidebar-cta-btn:hover{background:var(--blue-2)}.sidebar-tel{text-align:center;padding:16px 0 4px;font-size:11px;color:var(--gray)}.sidebar-tel a{font-size:20px;font-weight:800;color:var(--navy);display:block;margin-top:4px}.toc-list{list-style:none}.toc-list li{border-bottom:1px solid var(--line)}.toc-list li:last-child{border:0}.toc-list a{display:block;padding:8px 4px;font-size:13px;color:var(--ink-2);transition:color .2s}.toc-list a:hover{color:var(--blue)}footer{background:var(--navy);color:#94a3b8;padding:40px 0 24px}.f-inner{display:flex;justify-content:space-between;align-items:flex-start;gap:40px;margin-bottom:32px}.f-logo .ja{font-size:16px;font-weight:800;color:var(--white)}.f-logo .sub{font-size:11px;color:var(--sky);margin-top:4px}.f-logo p{font-size:12px;margin-top:10px;line-height:1.85}.f-nav h4{color:var(--white);font-size:11px;font-weight:700;letter-spacing:.1em;margin-bottom:12px}.f-nav ul{list-style:none}.f-nav li{margin-bottom:7px}.f-nav a{font-size:13px}.f-nav a:hover{color:var(--white)}.f-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:20px;text-align:center;font-size:12px}@media (max-width: 900px){.article-wrap{grid-template-columns:1fr}.sidebar{position:static}}@media (max-width: 640px){.hdr-inner{padding:0 20px}.wrap{padding:0 18px}.article-body h2{font-size:18px}.article-cta{padding:24px 20px}.f-inner{flex-direction:column}}