:root{
  --ink:#17233a;
  --paper:#fbfcfd;
  --sky:#e4ebf3;
  --line:#ccd5e1;
  --text:#2b3648;
  --muted:#59657a;
  --signal:#cf3a2c;
  --link:#1f4e9c;
  --mincho:"Shippori Mincho","Hiragino Mincho ProN","Yu Mincho",serif;
  --gothic:"Zen Kaku Gothic New","Hiragino Sans","Noto Sans JP",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--text);font-family:var(--gothic);font-size:1.0625rem;line-height:1.9}
img{max-width:100%;height:auto}
a{color:var(--link);text-underline-offset:.2em}
a:focus-visible{outline:3px solid #2a6fdb;outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-999px;top:0;background:#fff;color:var(--ink);padding:8px 12px;z-index:10}
.skip:focus{left:8px;top:8px}

/* header */
.site-header{background:var(--paper);border-bottom:1px solid var(--line)}
.bar{max-width:1040px;margin:0 auto;padding:12px 16px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:4px 24px}
.wordmark{font-family:var(--mincho);font-weight:800;font-size:1.3rem;letter-spacing:.04em;color:var(--ink);text-decoration:none;padding:6px 0}
.site-header nav{display:flex;gap:4px}
.site-header nav a{color:var(--text);text-decoration:none;font-size:.95rem;padding:10px 12px}
.site-header nav a:hover{color:var(--ink);text-decoration:underline}

/* layout */
.inner{max-width:1040px;margin:0 auto;padding:0 16px}
.narrow{max-width:720px}
h1,h2,h3{font-family:var(--mincho);color:var(--ink);line-height:1.5;margin:0}
h1{font-weight:800;font-size:1.75rem}
h2{font-weight:600;font-size:1.35rem;margin:2.6rem 0 .9rem}
.inner>section:first-child h2:first-child{margin-top:2.6rem}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--ink);color:#fff}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:60% 50%}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(23,35,58,.86) 0%,rgba(23,35,58,.7) 45%,rgba(23,35,58,.2) 100%)}
.hero-copy{position:relative;z-index:1;max-width:1040px;margin:0 auto;padding:72px 16px 64px}
.hero h1{color:#fff;font-size:clamp(1.65rem,5.2vw,2.6rem);line-height:1.5;letter-spacing:.02em;max-width:22em}
.hero h1 span{display:inline-block}
.hero p{max-width:34em;margin:1.1rem 0 0}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;margin-top:1.6rem!important}
.btn{display:inline-block;background:#fff;color:var(--ink);font-weight:700;text-decoration:none;padding:12px 26px;border-radius:2px}
.btn:hover{background:var(--sky)}
.btn-sub{font-size:.95rem;color:#e3e9f2}

/* top: entry list */
.entry-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.entry-list a{display:flex;flex-wrap:wrap;justify-content:space-between;gap:2px 16px;padding:16px 4px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--text)}
.entry-list a:hover strong{text-decoration:underline}
.entry-list strong{font-weight:700;color:var(--ink)}
.entry-list span{color:var(--muted);font-size:.95rem}

/* top: featured */
.feature{display:grid;grid-template-columns:1.25fr 1fr;gap:28px;align-items:center;text-decoration:none;color:var(--text)}
.feature img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:2px;background:var(--sky)}
.feature-title{display:block;font-family:var(--mincho);font-weight:800;font-size:1.4rem;line-height:1.55;color:var(--ink);margin:.2rem 0 .6rem}
.feature:hover .feature-title{text-decoration:underline}
.cat{display:block;font-size:.85rem;color:var(--signal);font-weight:700}
.row-desc{display:block;color:var(--muted);font-size:.95rem;line-height:1.75}

/* top: rows */
.rows{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.row{display:grid;grid-template-columns:132px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--text)}
.row .thumb{width:132px;aspect-ratio:3/2;object-fit:cover;border-radius:2px;background:var(--sky)}
.row-title{display:block;font-weight:700;color:var(--ink);line-height:1.6}
.row:hover .row-title{text-decoration:underline}
.more{margin:1rem 0 0;text-align:right}

/* LINE box */
.line-box{margin:3rem 0 0;padding:18px 20px;background:var(--sky);border-left:4px solid var(--ink)}
.line-box p{margin:0;font-size:.95rem;line-height:1.8}
.line-box .line-title{font-weight:700;color:var(--ink);font-size:1rem}

/* articles */
.crumb{margin:1.4rem 0 1.2rem;font-size:.85rem;color:var(--muted)}
.crumb a{color:var(--muted)}
.article-page article{border-left:2px solid var(--signal);padding-left:1.1rem;margin-top:1rem}
.article-page article h1{font-size:1.65rem;margin-bottom:1rem}
.article-page article h2{margin-top:2.4rem;padding-bottom:.3rem;border-bottom:1px solid var(--line)}
.article-page article p,.article-page article li{max-width:40em}
.article-page ul,.article-page ol{padding-left:1.4rem}
.article-page li{margin:.3rem 0}
figure{margin:1.6rem 0}
figure img{display:block;width:100%;height:auto;border-radius:2px}
figcaption{font-size:.88rem;color:var(--muted);margin-top:6px;line-height:1.7}
.notice{background:#fff;border:1px solid var(--line);padding:12px 16px;font-size:.92rem;line-height:1.8}
.meta{color:var(--muted);font-size:.88rem;margin:2rem 0 0}
.plain{list-style:none;padding:0!important;margin:0;border-top:1px solid var(--line)}
.plain li{margin:0;border-bottom:1px solid var(--line)}
.plain a{display:block;padding:12px 4px;color:var(--ink);text-decoration:none}
.plain a:hover{text-decoration:underline}
.related h2{font-size:1.15rem}
.info{border-collapse:collapse;width:100%;background:#fff}
.info th,.info td{border:1px solid var(--line);padding:12px;text-align:left}
.info th{background:var(--sky);width:30%;font-weight:700;color:var(--ink)}

/* footer */
.site-footer{margin-top:4rem;background:var(--ink);color:#dbe3ee;padding:28px 0 36px;font-size:.9rem}
.site-footer .inner{max-width:1040px}
.site-footer .notice{background:transparent;border-color:#46567a;color:#dbe3ee}
.site-footer a{color:#fff}
.foot-links{display:flex;flex-wrap:wrap;gap:4px 20px;margin:1rem 0 0}
.foot-links a{padding:6px 0}
.copy{margin:1rem 0 0;color:#a9b6ca;font-size:.85rem}

@media (max-width:720px){
  body{font-size:1rem}
  .hero-copy{padding:44px 16px 40px}
  .hero::after{background:rgba(23,35,58,.72)}
  .feature{grid-template-columns:1fr;gap:14px}
  .row{grid-template-columns:104px 1fr;gap:12px}
  .row .thumb{width:104px}
  .row-desc{display:none}
  h2{font-size:1.25rem}
  .article-page article h1{font-size:1.45rem}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}