:root{
  --blue:#0022A4;
  --blue-deep:#092A78;
  --sky:#4CABE2;
  --sky-2:#387EC7;
  --coral:#FF5647;
  --coral-dark:#E8402F;
  --marker:#FFD19C;
  --line:#06C755;
  --line-dark:#05B34C;
  --ink:#1c2333;
  --muted:#5A6478;
  --tint:#E1ECF7;
  --tint-2:#F2F7FC;
  --border:#D8E4F2;
  --shadow:0 10px 34px rgba(9,42,120,.12);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans JP',"Hiragino Kaku Gothic ProN",sans-serif;color:var(--ink);background:#fff;line-height:1.9;font-size:16px}
img{max-width:100%}
a{color:var(--blue);text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

/* header */
header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;color:var(--blue-deep);font-size:19px}
.logo-img{width:60px;height:60px;object-fit:contain}
nav.header-nav{display:flex;gap:22px;align-items:center}
nav.header-nav a.nav-link{color:var(--ink);font-size:14px;font-weight:700}
nav.header-nav a.nav-link:hover{color:var(--blue)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:900;border-radius:10rem;transition:.25s;cursor:pointer;text-align:center}
.btn::after{content:"▶";font-size:.7em;opacity:.9}
.btn-line{background:linear-gradient(135deg,var(--line) 0%,var(--line-dark) 100%);color:#fff;padding:16px 36px;font-size:16px;box-shadow:0 8px 22px rgba(6,199,85,.35)}
.btn-line:hover{transform:translateY(-2px)}
.btn-blue{background:linear-gradient(90deg,var(--sky) 0%,var(--sky-2) 100%);color:#fff;padding:12px 26px;font-size:14px;box-shadow:0 6px 16px rgba(56,126,199,.35)}

/* blog list */
.blog-hero{background:linear-gradient(160deg,#fff 0%,var(--tint-2) 60%,var(--tint) 100%);padding:56px 0 48px;text-align:center}
.blog-hero .en-label{display:block;font-size:13px;font-weight:900;letter-spacing:.28em;color:var(--sky-2);text-transform:uppercase;margin-bottom:10px}
.blog-hero h1{font-size:32px;font-weight:900;color:var(--blue-deep);font-feature-settings:"palt"}
.blog-hero p{color:var(--muted);font-size:14.5px;margin-top:12px}
.post-list{max-width:1080px;margin:0 auto;padding:56px 20px 72px;display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:18px;overflow:hidden;box-shadow:0 6px 20px rgba(9,42,120,.06);transition:.25s;position:relative}
.post-card::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:linear-gradient(90deg,var(--sky),var(--blue))}
.post-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:var(--sky-2)}
.post-card.featured{grid-column:1/-1}
.post-card.featured::before{background:linear-gradient(90deg,var(--coral),var(--coral-dark))}
.post-body{padding:26px 28px 24px;display:flex;flex-direction:column;flex:1}
.post-card.featured .post-body{padding:30px 34px 28px}
.post-meta{display:flex;gap:10px;align-items:center;margin-bottom:8px}
.post-cat{font-size:11.5px;font-weight:900;color:var(--sky-2);background:var(--tint-2);border-radius:10rem;padding:3px 12px}
.post-cat.hot{color:#fff;background:var(--coral)}
.post-date{font-size:12px;color:var(--muted)}
.post-card h2{font-size:17.5px;font-weight:900;color:var(--blue-deep);line-height:1.55;margin-bottom:8px;font-feature-settings:"palt"}
.post-card.featured h2{font-size:21px}
.post-card p{font-size:13px;color:var(--muted);flex:1}
.read-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;font-weight:900;color:var(--blue)}
.read-more::after{content:"→";transition:.2s}
.post-card:hover .read-more::after{transform:translateX(4px)}

/* article */
.article{max-width:760px;margin:0 auto;padding:52px 20px 60px}
.article .post-meta{margin-bottom:14px}
.article h1{font-size:29px;font-weight:900;color:var(--blue-deep);line-height:1.5;margin-bottom:18px;font-feature-settings:"palt"}
.article .lead{font-size:15.5px;color:var(--muted);border-left:4px solid var(--sky-2);background:var(--tint-2);border-radius:0 10px 10px 0;padding:16px 20px;margin-bottom:36px}
.article h2{font-size:22px;font-weight:900;color:var(--blue-deep);line-height:1.5;margin:44px 0 16px;padding:10px 16px;background:var(--tint-2);border-left:5px solid var(--blue);border-radius:0 8px 8px 0;font-feature-settings:"palt"}
.article h3{font-size:17.5px;font-weight:900;color:var(--blue-deep);margin:30px 0 10px;font-feature-settings:"palt"}
.article p{font-size:15px;margin-bottom:16px}
.article ul,.article ol{margin:0 0 16px 24px;font-size:15px}
.article li{margin-bottom:6px}
.article b{color:var(--blue-deep)}
.article .mk{background:linear-gradient(transparent 62%,var(--marker) 62%)}
.article table{width:100%;border-collapse:collapse;font-size:13.5px;margin-bottom:16px;background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 14px rgba(9,42,120,.06)}
.article th,.article td{padding:12px 14px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
.article thead th{background:var(--blue-deep);color:#fff;font-weight:700}
.article tr:last-child td{border-bottom:none}
.info-box{background:var(--tint-2);border:1px solid var(--border);border-left:5px solid var(--sky-2);border-radius:10px;padding:16px 20px;margin-bottom:16px;font-size:14px}
.warn-box{background:#FDF6F5;border:1px solid #F5CFC9;border-left:5px solid var(--coral);border-radius:10px;padding:16px 20px;margin-bottom:16px;font-size:14px}
.warn-box b{color:var(--coral-dark)}

.quote-ex{border-left:4px solid var(--sky-2);background:var(--tint-2);padding:14px 18px;border-radius:0 10px 10px 0;margin-bottom:16px;font-size:13.5px;color:var(--ink)}
.quote-ex .q-label{display:block;font-size:11px;font-weight:900;color:var(--sky-2);letter-spacing:.1em;margin-bottom:4px}

/* 棒グラフ */
.chart{background:#fff;border:1px solid var(--border);border-radius:14px;padding:24px 20px 14px;margin-bottom:8px;box-shadow:0 4px 14px rgba(9,42,120,.06)}
.chart-title{font-size:13.5px;font-weight:900;color:var(--blue-deep);text-align:center;margin-bottom:16px}
.bars{display:flex;align-items:flex-end;gap:10px;height:150px}
.bar{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%}
.bar i{display:block;width:100%;max-width:64px;border-radius:6px 6px 0 0;background:linear-gradient(180deg,var(--sky),var(--sky-2));height:var(--h)}
.bar.hot i{background:linear-gradient(180deg,var(--coral),var(--coral-dark))}
.bar b{font-size:12px;color:var(--blue-deep);margin-bottom:4px;font-feature-settings:"palt";white-space:nowrap}
.bar.hot b{color:var(--coral-dark)}
.bar-labels{display:flex;gap:10px;margin-top:8px}
.bar-labels span{flex:1;text-align:center;font-size:11px;color:var(--muted);line-height:1.4}
.chart-note{font-size:11px;color:var(--muted);text-align:center;margin-top:10px}

/* CTA box */
.cta-box{background:linear-gradient(135deg,var(--blue-deep) 0%,var(--blue) 60%,var(--sky-2) 100%);border-radius:20px;padding:36px 30px;text-align:center;margin:44px 0 10px}
.cta-box h2{all:unset;display:block;font-size:20px;font-weight:900;color:#fff;line-height:1.6;margin-bottom:8px;font-feature-settings:"palt"}
.cta-box p{color:#C9D6EE;font-size:13.5px;margin-bottom:20px}
.cta-box .cta-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.cta-box .btn-white{background:#fff;color:var(--blue-deep);padding:14px 28px;font-size:14.5px}
.back-link{display:inline-block;margin-top:28px;font-size:14px;font-weight:700}
.related{margin-top:36px;background:var(--tint-2);border:1px solid var(--border);border-radius:14px;padding:20px 26px}
.related h3{font-size:14px;font-weight:900;color:var(--blue-deep);margin-bottom:8px;font-feature-settings:"palt"}
.related a{display:block;padding:9px 0 9px 18px;border-bottom:1px dashed var(--border);font-weight:700;font-size:13.5px;position:relative}
.related a::before{content:"▶";position:absolute;left:0;font-size:9px;color:var(--sky-2);top:14px}
.related a:last-child{border-bottom:none}
.article .disclaim{font-size:12px;color:var(--muted);border-top:1px solid var(--border);padding-top:16px;margin-top:36px}

/* footer */
footer{background:var(--blue-deep);color:#B9C7DD;padding:44px 0;font-size:13px}
footer .foot-grid{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;margin-bottom:24px}
footer .foot-logo{color:#fff;font-weight:900;font-size:17px;margin-bottom:8px}
footer nav{display:flex;gap:20px;flex-wrap:wrap}
footer nav a{color:#B9C7DD;font-size:13px}
footer nav a:hover{color:#fff}
footer .legal{border-top:1px solid rgba(255,255,255,.15);padding-top:20px;font-size:12px;color:#8FA3C0}

@media(max-width:900px){
  nav.header-nav .nav-link{display:none}
  .blog-hero h1{font-size:24px}
  .post-list{grid-template-columns:1fr;gap:18px;padding:36px 20px 56px}
  .post-card.featured .post-body{padding:22px 22px 24px}
  .post-card.featured h2{font-size:18px}
  .post-body{padding:20px 20px 22px}
  .article h1{font-size:22px}
  .article h2{font-size:18px}
  .article p,.article ul,.article ol{font-size:14px}
  .article table{font-size:12.5px;display:block;overflow-x:auto}
  .cta-box{padding:28px 18px}
  .cta-box .cta-btns .btn{width:100%}
  .logo{font-size:16px}
  .logo-img{width:46px;height:46px}
}