:root{
  --navy:#0D2240;--navy-2:#16305A;--navy-deep:#081629;--red:#C00000;--red-soft:#E0393E;
  --ink:#1A2233;--muted:#4D5566;--line:#E2DED4;--ground:#FAFAF8;--paper:#F3F1EB;--white:#fff;
  --on-navy:#E3E8F0;--on-navy-muted:#B8C2D3;
  --serif:'Shippori Mincho',serif;--latin:'Cormorant Garamond',Georgia,serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ground);color:var(--ink);font-family:'Noto Sans JP',system-ui,sans-serif;font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy)}
h1,h2,h3,h4{word-break:auto-phrase;text-wrap:balance}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:54px;padding:0 28px;border-radius:2px;font-weight:700;text-decoration:none;white-space:nowrap;transition:background .2s}
.btn svg{width:18px;height:18px}
.btn--red{background:var(--red);color:#fff}
.btn--red:hover{background:#A30000;color:#fff}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,250,248,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px}
.logo img{height:26px;width:auto}
.nav{display:flex;align-items:center;gap:26px;font-size:14px}
.nav a{text-decoration:none;color:var(--ink);white-space:nowrap;padding:10px 0}
.nav a:hover{color:var(--red)}
.nav .btn{min-height:44px;padding:0 20px;font-size:14px;color:#fff;gap:0}
@media (max-width:960px){.nav a:not(.btn){display:none}}
.pc-only{display:inline}
@media (max-width:600px){.pc-only{display:none}.nav .btn{min-height:40px;padding:0 16px;font-size:13px}}

/* breadcrumb */
.crumbs{font-size:12.5px;color:var(--muted);padding:20px 0 0}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px}
.crumbs li+li::before{content:"›";margin:0 6px;color:var(--line)}
.crumbs a{color:var(--muted)}

/* column index */
.col-hero{padding:56px 0 40px}
.eyebrow{display:inline-flex;align-items:center;gap:12px;font-family:var(--latin);font-size:15px;font-weight:600;letter-spacing:.22em;color:var(--red);text-transform:uppercase}
.eyebrow::before{content:"";width:28px;height:1px;background:currentColor}
.col-hero h1{margin:12px 0 12px;font-family:var(--serif);font-weight:800;font-size:clamp(30px,4.4vw,44px);color:var(--navy);line-height:1.4}
.col-hero p{margin:0;color:var(--muted);max-width:44em}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,320px),1fr));gap:28px;padding-bottom:96px}
.card{background:var(--white);border:1px solid var(--line);text-decoration:none;color:inherit;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(13,34,64,.10)}
.card img{aspect-ratio:16/9;object-fit:cover;width:100%}
.card__body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px}
.card__cat{font-size:12px;font-weight:700;color:var(--red);letter-spacing:.06em}
.card h2,.card h3{margin:0;font-family:var(--serif);font-weight:800;font-size:20px;line-height:1.55;color:var(--navy)}
.card p{margin:0;font-size:14px;color:var(--muted);line-height:1.8}
.card time{font-size:12px;color:var(--muted)}

/* article */
.article{max-width:760px;margin:0 auto;padding:32px 24px 40px}
.article__cat{font-size:13px;font-weight:700;color:var(--red);letter-spacing:.06em}
.article h1{margin:10px 0 16px;font-family:var(--serif);font-weight:800;font-size:clamp(26px,4vw,36px);line-height:1.5;color:var(--navy)}
.article__meta{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13px;color:var(--muted);padding-bottom:20px;border-bottom:1px solid var(--line)}
.article__eyecatch{margin:28px 0}
.article__eyecatch img{width:100%;aspect-ratio:16/8;object-fit:cover}
.lead-box{background:var(--white);border-left:3px solid var(--navy);padding:20px 24px;margin:0 0 32px}
.lead-box p{margin:0}
.toc{background:var(--white);border:1px solid var(--line);padding:22px 26px;margin:0 0 40px}
.toc p{margin:0 0 8px;font-weight:700;color:var(--navy)}
.toc ol{margin:0;padding-left:1.4em;font-size:15px}
.toc li{margin:4px 0}
.toc a{color:var(--ink);text-decoration:none}
.toc a:hover{color:var(--red);text-decoration:underline}
.prose h2{margin:56px 0 20px;padding:0 0 12px;border-bottom:2px solid var(--navy);font-family:var(--serif);font-weight:800;font-size:clamp(22px,3vw,27px);line-height:1.5;color:var(--navy);scroll-margin-top:90px}
.prose h3{margin:36px 0 12px;padding-left:14px;border-left:4px solid var(--red);font-size:19px;line-height:1.55;color:var(--navy);scroll-margin-top:90px}
.prose p{margin:0 0 20px}
.prose ul,.prose ol{margin:0 0 24px;padding-left:1.4em}
.prose li{margin:6px 0}
.prose strong{background:linear-gradient(transparent 62%,rgba(192,0,0,.14) 62%)}
.prose table{width:100%;border-collapse:collapse;margin:0 0 28px;font-size:14.5px}
.prose th,.prose td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top;line-height:1.7}
.prose th{background:var(--paper);color:var(--ink)}
.prose td{background:var(--white)}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 28px}
.table-wrap table{margin:0;min-width:560px}
.prose .note{font-size:13px;color:var(--muted);margin-top:-12px}
.point{background:var(--white);border:1px solid var(--line);padding:22px 24px;margin:0 0 28px}
.point__label{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;color:#fff;background:var(--navy);padding:2px 10px;margin-bottom:10px}
.point p:last-child,.point ul:last-child{margin-bottom:0}
.flow{display:flex;flex-direction:column;gap:6px;margin:0 0 28px}
.flow p{margin:0;display:grid;grid-template-columns:80px 1fr;gap:12px;padding:12px 16px;background:var(--white);border:1px solid var(--line);font-size:15px;line-height:1.75}
.flow b{color:var(--red);font-size:13px}
.flow p:last-child{background:var(--navy);color:#fff;border-color:var(--navy)}
.flow p:last-child b{color:var(--red-soft)}
.inline-cta{margin:40px 0;padding:28px 28px;background:var(--navy);color:#fff;display:flex;flex-direction:column;gap:14px}
.inline-cta p{margin:0}
.inline-cta__lead{font-family:var(--serif);font-weight:800;font-size:20px;line-height:1.6}
.inline-cta__sub{font-size:14px;color:var(--on-navy)}
.inline-cta .btn{align-self:flex-start}
@media (max-width:600px){.inline-cta .btn{align-self:stretch;font-size:15px;padding:0 16px}}
.author{margin:56px 0 0;display:grid;grid-template-columns:96px 1fr;gap:20px;padding:24px;background:var(--white);border:1px solid var(--line)}
.author img{width:96px;height:120px;object-fit:cover}
.author__label{margin:0;font-size:12px;font-weight:700;color:var(--red);letter-spacing:.08em}
.author__name{margin:2px 0 6px;font-family:var(--serif);font-weight:800;font-size:19px;color:var(--navy)}
.author__bio{margin:0;font-size:13.5px;color:var(--muted);line-height:1.8}
.related{max-width:1160px;margin:0 auto;padding:40px 24px 96px}
.related h2{font-family:var(--serif);font-weight:800;font-size:22px;color:var(--navy);margin:0 0 20px}

/* footer */
.site-footer{background:var(--navy-deep);color:var(--on-navy-muted)}
.site-footer .wrap{padding-top:48px;padding-bottom:28px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px;font-size:13px}
.footer__brand img{height:24px;width:auto}
.footer__brand p{margin:12px 0 0}
.footer__links{display:flex;flex-wrap:wrap;gap:8px 24px}
.footer__links a{color:var(--on-navy);text-decoration:none}
.footer__links a:hover{color:#fff;text-decoration:underline}
.footer__bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:18px!important}
.footer__bottom p{margin:0}

/* sticky cta */
.sticky-cta{display:none}
@media (max-width:700px){
  .sticky-cta{display:block;position:fixed;left:0;right:0;bottom:0;z-index:60;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(250,250,248,.96);border-top:1px solid var(--line)}
  .sticky-cta .btn{width:100%;min-height:52px;font-size:15px}
  body{padding-bottom:76px}
}