:root{
  --primary:#533afd;--primary-deep:#4434d4;--primary-press:#2e2b8c;--primary-soft:#665efd;--primary-sub:#b9b9f9;
  --navy:#1c1e54;--ink:#0d253d;--ink-2:#273951;--mute:#64748d;
  --canvas:#fff;--soft:#f6f9fc;--cream:#f5e9d4;--line:#e3e8ee;--line-input:#a8c3de;
  --ruby:#ea2261;--magenta:#f96bee;
  --sh1:0 1px 3px rgba(0,55,112,.08);
  --sh2:0 8px 24px rgba(0,55,112,.08),0 2px 6px rgba(0,55,112,.04);
  --sh3:0 30px 60px -12px rgba(50,50,93,.25),0 18px 36px -18px rgba(0,0,0,.3);
  --sans:"Inter","Noto Sans JP",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--canvas);color:var(--ink);font-family:var(--sans);font-weight:300;font-size:15px;line-height:1.7;font-feature-settings:"ss01","palt";-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-press)}
.num{font-feature-settings:"tnum";letter-spacing:-.02em}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
b,strong{font-weight:500}

/* nav */
.nav{position:sticky;top:0;z-index:40;transition:background .2s,box-shadow .2s}
/* ログイン中はWPの管理バー（fixed）の下に止める。600px以下は管理バーがスクロールで消えるので0に戻す */
.admin-bar .nav{top:32px}
@media (max-width:782px){.admin-bar .nav{top:46px}}
@media (max-width:600px){.admin-bar .nav{top:0}}
.nav.scrolled{background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);box-shadow:0 1px 0 var(--line)}
.nav .wrap{display:flex;align-items:center;gap:32px;height:64px}
.mark{display:flex;align-items:baseline;gap:8px;color:var(--ink);font-weight:500;font-size:15px;letter-spacing:-.01em;white-space:nowrap}
.mark i{font-style:normal;display:inline-block;width:18px;height:18px;border-radius:5px;background:linear-gradient(135deg,var(--primary),var(--ruby));transform:translateY(3px)}
.mark small{font-weight:400;font-size:10px;color:var(--mute);border:1px solid var(--line);border-radius:4px;padding:1px 5px;letter-spacing:.02em}
.nav ul{display:flex;gap:28px;list-style:none;margin:0;padding:0;font-size:14px}
.nav ul a{color:var(--ink-2)}
.nav ul a:hover{color:var(--ink)}
.nav .sp{flex:1}
.pill{display:inline-flex;align-items:center;gap:6px;border-radius:9999px;padding:9px 18px;font-size:15px;font-weight:400;line-height:1;border:1px solid transparent;cursor:pointer;font-family:inherit;transition:background .15s,color .15s,border-color .15s;white-space:nowrap}
.pill.fill{background:var(--primary);color:#fff}
.pill.fill:hover{background:var(--primary-press);color:#fff}
.pill.ghost{background:transparent;color:var(--primary)}
.pill.ghost:hover{color:var(--primary-press)}
.pill.sm{font-size:14px;padding:8px 16px}
.pill .arr{display:inline-block;transition:transform .15s}
.pill:hover .arr{transform:translateX(3px)}

/* hero */
.hero{position:relative;margin-top:-64px;padding-top:64px;overflow:hidden}
.mesh{position:absolute;inset:0 0 auto 0;height:640px;transform:skewY(-6deg);transform-origin:0 0;overflow:hidden;z-index:0}
.mesh svg{position:absolute;inset:-10% -5%;width:110%;height:120%}
.mesh::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,0) 60%,rgba(255,255,255,.35))}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr 1fr;gap:56px;padding-top:88px;padding-bottom:40px;align-items:start}
.eyebrow{display:inline-flex;gap:10px;align-items:center;font-size:13px;color:var(--ink-2);font-weight:400;background:rgba(255,255,255,.55);border-radius:9999px;padding:5px 12px 5px 6px;backdrop-filter:blur(6px)}

footer.ft{padding:56px 0 64px;font-size:12.5px;color:var(--mute)}
.ft .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.ft h5{margin:0 0 10px;font-weight:500;color:var(--ink);font-size:12.5px}
.ft ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.ft a{color:var(--mute)}
.ft a:hover{color:var(--ink)}
.ft .credits{grid-column:1/-1;font-size:11.5px;line-height:1.8}
.ft .legal{grid-column:1/-1;border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* 記事ページ固有 */
h1{font-weight:300;line-height:1.16;letter-spacing:-.035em;color:var(--ink)}
.ph{display:inline-block}
.nav{background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);box-shadow:0 1px 0 var(--line)}
.progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:60;background:linear-gradient(90deg,var(--primary),var(--ruby))}

.ahead{position:relative;overflow:hidden;padding:40px 0 0}
.ahead .mesh{height:420px;opacity:.55}
.ahead .wrap{position:relative;z-index:1}
.crumbs{font-size:12.5px;color:var(--mute);display:flex;gap:8px;flex-wrap:wrap}
.crumbs a{color:var(--ink-2)}
.crumbs span{opacity:.5}
.ahead h1{font-size:44px;max-width:19em;margin:18px 0 18px}
.meta{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--ink-2);align-items:center}
.meta span{display:inline-flex;gap:6px;align-items:center}
.meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary)}
.meta span:first-child::before{display:none}

/* ヒーロー写真：角丸＋斜めの色面＋浮いたデータチップ */
.shot{position:relative;margin:40px 0 0;border-radius:16px;overflow:hidden;aspect-ratio:21/9;box-shadow:var(--sh3);background:var(--navy)}
.shot img{width:100%;height:100%;object-fit:cover;display:block;filter:saturate(.85) contrast(1.02)}
.shot::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(28,30,84,.72) 0%,rgba(28,30,84,.18) 42%,rgba(83,58,253,0) 60%),linear-gradient(0deg,rgba(13,37,61,.35),rgba(13,37,61,0) 40%)}
.chips{position:absolute;left:28px;bottom:26px;z-index:2;display:flex;gap:10px;flex-wrap:wrap}
.chip{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:#fff;border-radius:10px;padding:10px 14px;font-size:12px;line-height:1.35}
.chip b{display:block;font-weight:300;font-size:22px;letter-spacing:-.02em;font-feature-settings:"tnum"}
.chip b small{font-size:12px;opacity:.75;margin-left:2px}
.credit{position:absolute;right:14px;bottom:10px;z-index:2;font-size:10.5px;color:rgba(255,255,255,.7)}
.credit a{color:inherit}

/* 本文＋目次 */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:72px;padding-top:56px;padding-bottom:96px}
.toc{position:sticky;top:96px;align-self:start;font-size:13px}
.toc h4{margin:0 0 12px;font-weight:500;font-size:12px;color:var(--mute);letter-spacing:.04em}
.toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.toc a{display:block;padding:6px 0 6px 14px;margin-left:-1px;border-left:2px solid transparent;color:var(--ink-2);line-height:1.5}
.toc a:hover{color:var(--ink)}
.toc a.on{border-left-color:var(--primary);color:var(--primary-deep);font-weight:400}
.toc .back{margin-top:20px;padding:16px;background:var(--soft);border-radius:12px}
.toc .back p{margin:0 0 10px;color:var(--ink-2);line-height:1.6}

.body{max-width:720px;font-size:16px;line-height:1.95;color:var(--ink-2)}
.body>p:first-child{font-size:18px;color:var(--ink);line-height:1.85}
.body h2{font-size:28px;color:var(--ink);margin:64px 0 18px;scroll-margin-top:88px;display:flex;gap:14px;align-items:baseline}
.body h2 .no{font-size:13px;font-weight:500;color:var(--primary-deep);font-feature-settings:"tnum";border:1px solid var(--primary-sub);border-radius:9999px;padding:2px 9px;transform:translateY(-4px)}
.body h3{font-weight:500;font-size:17px;color:var(--ink);margin:32px 0 8px}
.body ul,.body ol{padding-left:1.3em;margin:16px 0}
.body li{margin:0 0 12px}
.body li strong{color:var(--ink)}
.body a{border-bottom:1px solid var(--primary-sub)}
.body a:hover{border-bottom-color:var(--primary)}

/* 記事内データカード */
.datacard{margin:32px 0;background:var(--navy);color:#dfe3ff;border-radius:14px;padding:22px 24px 18px;box-shadow:var(--sh2)}
.datacard header{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:#9aa3d9;margin-bottom:14px}
.datacard header b{font-weight:400;color:#fff;font-size:13.5px}
.drow{display:grid;grid-template-columns:7.5em 1fr 4.5em;gap:14px;align-items:center;font-size:13px;padding:5px 0}
.drow i{display:block;height:8px;border-radius:4px;background:rgba(255,255,255,.08);position:relative;overflow:hidden}
.drow i::after{content:"";position:absolute;inset:0 auto 0 0;width:var(--w);border-radius:4px;background:linear-gradient(90deg,var(--primary-soft),var(--magenta))}
.drow u{text-decoration:none;text-align:right;color:#fff;font-feature-settings:"tnum"}
.datacard footer{margin-top:12px;padding-top:10px;border-top:1px solid rgba(255,255,255,.08);font-size:11.5px;color:#7d85bd}

/* 注意書きボックス */
.note{margin:28px 0;border-radius:12px;padding:18px 20px 18px 52px;background:var(--soft);position:relative;font-size:14.5px;line-height:1.8}
.note::before{content:"i";position:absolute;left:18px;top:19px;width:20px;height:20px;border-radius:50%;background:var(--ink);color:#fff;font-size:12px;font-weight:500;display:grid;place-items:center;font-family:Georgia,serif;font-style:italic}
.note b{color:var(--ink)}
.note.warm{background:var(--cream)}

/* 本文中の横長写真 */
.figure{margin:36px 0;border-radius:14px;overflow:hidden;position:relative;aspect-ratio:16/7}
.figure img{width:100%;height:100%;object-fit:cover;display:block;filter:grayscale(.35) contrast(1.05)}
.figure figcaption a{color:inherit}
.figure figcaption{position:absolute;left:16px;bottom:14px;font-size:12px;color:#fff;background:rgba(13,37,61,.55);backdrop-filter:blur(8px);border-radius:9999px;padding:4px 12px}

/* 手順 */
.steps{list-style:none;padding:0!important;counter-reset:s}
.steps li{counter-increment:s;position:relative;padding:0 0 0 48px;margin:0 0 18px}
.steps li::before{content:counter(s);position:absolute;left:0;top:2px;width:30px;height:30px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--sh1);display:grid;place-items:center;font-size:13px;font-weight:500;color:var(--primary-deep);font-feature-settings:"tnum"}

/* 府県リンク */
.prefs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0}
.prefs a{border:1px solid var(--line)!important;border-radius:12px;padding:14px 16px;display:flex;justify-content:space-between;align-items:center;color:var(--ink);font-size:14.5px;background:#fff;transition:box-shadow .15s,border-color .15s}
.prefs a:hover{box-shadow:var(--sh2);border-color:var(--primary-sub)!important}
.prefs a small{color:var(--mute);font-size:12px;font-feature-settings:"tnum"}

.disclaimer{margin-top:56px;padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--mute);line-height:1.8}

/* 関連記事 */
.related{background:var(--soft);padding:80px 0 96px}
.related h2{font-size:30px}
.agrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:28px}
.acard{display:block;background:#fff;border-radius:16px;overflow:hidden;box-shadow:var(--sh1);color:var(--ink);transition:box-shadow .2s,transform .2s}
.acard:hover{box-shadow:var(--sh3);transform:translateY(-3px);color:var(--ink)}
.acard .th{aspect-ratio:4/3;overflow:hidden;position:relative;background:var(--navy)}
.acard .th img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s cubic-bezier(.2,.8,.2,1)}
.acard:hover .th img{transform:scale(1.04)}
.acard .th span{position:absolute;left:12px;top:12px;font-size:11px;background:rgba(255,255,255,.9);color:var(--ink);border-radius:9999px;padding:3px 10px}
.acard .th span.soon{background:rgba(13,37,61,.7);color:#fff}
.acard .tx{padding:18px 20px 20px}
.acard h3{margin:0 0 8px;font-weight:500;font-size:16px;line-height:1.55}
.acard p{margin:0;font-size:13px;color:var(--mute);line-height:1.7}

@media (max-width:1024px){
  .layout{grid-template-columns:1fr;gap:0}
  .toc{display:none}
  .agrid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  .wrap{padding:0 16px}
  body{overflow-x:clip}
  .nav ul{display:none}
  .nav .wrap{gap:12px}
  .mark{font-size:14px}
  .mark small{display:none}
  .nav .pill{padding:7px 12px;font-size:13px}
  .nav .pill .arr{display:none}
  .ahead{padding-top:24px}
  .ahead h1{font-size:28px;letter-spacing:-.025em}
  .shot{aspect-ratio:4/3;margin-top:28px;border-radius:12px}
  .chips{left:14px;bottom:14px;gap:6px}
  .chip{padding:7px 10px;font-size:11px}
  .chip b{font-size:17px}
  .credit{display:none}
  .layout{padding-top:36px;padding-bottom:64px}
  .body{font-size:15.5px}
  .body>p:first-child{font-size:16.5px}
  .body h2{font-size:22px;margin-top:48px}
  .datacard{padding:18px 16px 14px}
  .datacard header{flex-direction:column;gap:4px}
  .drow{grid-template-columns:7em 1fr 2.8em;gap:10px;font-size:12px;white-space:nowrap}
  .prefs{grid-template-columns:repeat(2,1fr)}
  .agrid{grid-template-columns:1fr}
  .related{padding:56px 0 64px}
  .ft .wrap{grid-template-columns:1fr 1fr}
  .ft .wrap>div:first-child{grid-column:1/-1}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.acard[aria-disabled]{pointer-events:none}