:root{--text:#12171c;--muted:#58636c;--line:#dfe4e7;--bg:#ffffff;--soft:#f5f7f8;--navy:#163b52;--accent:#9b4337;--brand:#163b52;--brand-soft:#f5f7f8;--max:1120px;--article:780px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;line-height:1.8;letter-spacing:.015em}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:3px}img{display:block;max-width:100%;height:auto}.wrap{width:min(calc(100% - 48px),var(--max));margin:auto}.site-header{border-bottom:1px solid var(--line);background:#fff}.header-row{display:flex;align-items:flex-start;justify-content:space-between;gap:32px;padding:25px 0 18px}.brand h1,.brand .brand-name{font-size:24px;line-height:1.2;margin:0 0 6px;font-weight:800;letter-spacing:.02em}.brand p{margin:0;font-size:12px;color:var(--muted)}.nav{display:flex;gap:24px;align-items:center;padding-top:4px;font-size:13px;white-space:nowrap}.notice{font-size:11px;color:#6e767d;padding:12px 0;border-bottom:1px solid #eef1f2}.feature{display:grid;grid-template-columns:1.08fr 1fr;gap:42px;padding:48px 0 46px;border-bottom:1px solid var(--line)}.feature img{aspect-ratio:16/9;width:100%;object-fit:cover;background:var(--soft)}.eyebrow,.category{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:700}.feature h2{font-size:34px;line-height:1.45;margin:10px 0 15px}.feature p{color:var(--muted);margin:0 0 16px;font-size:14px}.text-link{font-size:13px;font-weight:700;text-decoration:underline;text-underline-offset:4px}.section{padding:48px 0;border-bottom:1px solid var(--line)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.section-head h2{font-size:26px;line-height:1.3;margin:0}.section-head .label{display:block;font-size:10px;letter-spacing:.25em;color:#92a0a8;margin-bottom:7px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:34px 26px}.card{min-width:0}.card img{aspect-ratio:16/9;width:100%;object-fit:cover;margin-bottom:13px;background:var(--soft)}.card .category{display:block;margin-bottom:6px}.card h3{font-size:17px;line-height:1.55;margin:0 0 8px}.card p{font-size:12px;line-height:1.8;color:var(--muted);margin:0 0 10px}.card-foot{font-size:10px;color:#839099}.themes{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);border-right:0}.theme-card{padding:20px 18px;border-right:1px solid var(--line);min-height:142px}.theme-card strong{display:block;font-size:14px;margin-bottom:8px}.theme-card span{font-size:11px;line-height:1.7;color:var(--muted)}.about-box{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;background:var(--brand-soft);padding:34px 38px}.about-box .small{font-size:10px;letter-spacing:.18em;color:var(--accent)}.about-box h2{font-size:24px;line-height:1.5;margin:7px 0 0}.about-box p{margin:0 0 12px;color:var(--muted);font-size:13px}.editor{display:grid;grid-template-columns:58px 1fr;gap:18px;align-items:start;padding:34px 0}.editor-badge{width:48px;height:48px;border-radius:50%;background:var(--brand);color:white;display:grid;place-items:center;font-weight:800}.editor small{font-size:9px;letter-spacing:.18em;color:#7d8a92}.editor h3{margin:2px 0 5px;font-size:16px}.editor p{margin:0;color:var(--muted);font-size:12px;max-width:760px}.footer{margin-top:42px;background:#101a21;color:#e7ecef}.footer .wrap{display:flex;justify-content:space-between;gap:30px;padding:34px 0}.footer strong{font-size:14px}.footer p{font-size:10px;color:#aeb9c0;margin:5px 0 0}.footer nav{display:flex;gap:18px;flex-wrap:wrap;font-size:10px;color:#c7d0d5}.breadcrumb{font-size:11px;color:#7c878d;margin:24px 0}.page-head{padding:34px 0 26px;border-bottom:1px solid var(--line)}.page-head h1{font-size:36px;line-height:1.35;margin:4px 0 10px}.page-head p{margin:0;color:var(--muted);max-width:720px}.article-shell{width:min(calc(100% - 48px),var(--article));margin:auto}.article-head{padding:32px 0 24px}.article-head h1{font-size:38px;line-height:1.45;margin:10px 0 12px}.article-lead{font-size:15px;color:var(--muted)}.byline{font-size:11px;color:#738087;margin-top:14px}.article-hero{width:min(calc(100% - 48px),980px);margin:0 auto 34px}.article-hero img{width:100%;aspect-ratio:16/9;object-fit:cover}.toc{background:var(--soft);padding:22px 24px;margin:26px 0}.toc strong{font-size:14px}.toc ol{margin:10px 0 0;padding-left:20px;font-size:13px}.article-body h2{font-size:25px;line-height:1.5;margin:42px 0 14px;padding-top:8px;border-top:1px solid var(--line)}.article-body h3{font-size:18px;margin:28px 0 8px}.article-body p{font-size:15px;margin:0 0 18px}.article-body ul{margin:0 0 22px;padding-left:22px}.article-body li{margin:5px 0}.note{border-left:3px solid var(--brand);background:var(--brand-soft);padding:16px 18px;margin:24px 0;font-size:13px}.source{border-top:1px solid var(--line);padding-top:22px;margin-top:42px}.source h2{border:0;margin:0 0 10px;padding:0;font-size:18px}.source p,.source li{font-size:12px;color:var(--muted)}.tags{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}.tag{font-size:11px;border:1px solid var(--line);padding:5px 9px}.ad-note{font-size:11px;color:#6c777e;border:1px solid var(--line);padding:15px;margin:26px 0}.related{border-top:1px solid var(--line);margin-top:34px;padding-top:26px}.related h2{font-size:20px}.related ul{padding-left:18px}.related li{margin:8px 0;font-size:13px}.legal{width:min(calc(100% - 48px),850px);margin:auto;padding:38px 0}.legal h1{font-size:34px}.legal h2{font-size:21px;border-top:1px solid var(--line);padding-top:20px;margin-top:28px}.legal p,.legal li{font-size:14px}.company-table{width:100%;border-collapse:collapse}.company-table th,.company-table td{border-top:1px solid var(--line);padding:14px;text-align:left;font-size:13px}.company-table th{width:170px;color:var(--muted);font-weight:500}.all-articles .grid{margin-top:26px}.theme-intro{padding:24px 0 12px;color:var(--muted)}.skip{position:absolute;left:-9999px}.skip:focus{left:10px;top:10px;background:white;padding:10px;z-index:10}.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}.themes{grid-template-columns:repeat(2,1fr);border-bottom:0}.theme-card{border-bottom:1px solid var(--line)}.feature{gap:26px}.feature h2{font-size:28px}.nav{gap:14px}}
@media(max-width:760px){.wrap,.article-shell,.article-hero,.legal{width:min(calc(100% - 32px),100%)}.header-row{display:block;padding:18px 0 14px}.brand h1,.brand .brand-name{font-size:21px}.nav{margin-top:14px;overflow-x:auto;padding-bottom:3px;font-size:12px}.notice{font-size:10px}.feature{grid-template-columns:1fr;padding:30px 0}.feature h2{font-size:28px}.grid{grid-template-columns:1fr;gap:30px}.section{padding:36px 0}.section-head h2{font-size:23px}.themes{grid-template-columns:1fr;border-right:1px solid var(--line)}.theme-card{border-right:0}.about-box{grid-template-columns:1fr;gap:16px;padding:26px 22px}.about-box h2{font-size:22px}.footer .wrap{display:block}.footer nav{margin-top:20px}.page-head h1{font-size:30px}.article-head h1{font-size:30px}.article-body h2{font-size:22px}}

.hero-visual{width:100vw;max-width:none;margin:0 0 10px calc(50% - 50vw);overflow:hidden}.hero-visual img{width:100%;max-width:none;height:clamp(320px,34vw,520px);object-fit:cover;object-position:center center;display:block;background:var(--soft)}@media(max-width:760px){.hero-visual img{height:clamp(220px,52vw,280px);object-position:center center}}


body{overflow-x:hidden}