/* WordPress乗り換えセンター 下層ページ共通スタイル（トークンはDESIGN.md／TOPページと同じ） */
:root{
  --primary:#2348D6; --primary-dark:#14267A;
  --grad:linear-gradient(135deg,#1C33B8 0%,#2F5BEA 100%);
  --cta:#D8F35C; --cta-text:#14267A;
  --bg:#FFFFFF; --bg-subtle:#EEF3FC;
  --text:#1A1F36; --muted:#6B7385; --border:#DDE3EE;
  --ff-ja:"Noto Sans JP","Hiragino Sans","Hiragino Kaku Gothic ProN",sans-serif;
  --ff-en:"Inter","Helvetica Neue",Arial,sans-serif;
  --max:1120px;
  --shadow:0 4px 16px rgba(35,72,214,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{font-family:var(--ff-ja);color:var(--text);background:var(--bg);font-size:16px;line-height:1.8;letter-spacing:.02em;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,b,strong{word-break:auto-phrase;line-break:strict}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:9999px;font-weight:700;padding:14px 30px;transition:transform .2s,background .2s;white-space:nowrap;border:0;font-family:inherit;font-size:15px;cursor:pointer}
.btn-cta{background:var(--cta);color:var(--cta-text);box-shadow:0 4px 12px rgba(20,38,122,.18)}
.btn-cta:hover{background:#C7E43F;transform:translateY(-1px)}
.btn-line{border:1.5px solid var(--primary);color:var(--primary);background:#fff}
.btn-line:hover{background:var(--primary);color:#fff}

/* header (下層は白ヘッダー) */
.topbar{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--primary-dark)}
.logo-mark{width:30px;height:30px;border-radius:8px;background:var(--primary);display:grid;place-items:center;flex:none}
.nav ul{display:flex;gap:24px;list-style:none;font-size:13.5px;font-weight:500}
.nav ul a:hover,.nav ul a[aria-current]{color:var(--primary)}
.nav .btn{padding:9px 20px;font-size:13px}

/* page hero */
.page-hero{background:var(--grad);color:#fff;padding:56px 0 64px;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-160px;top:-200px;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.12),transparent 65%)}
.page-hero .wrap{position:relative;z-index:1}
.page-hero .label{display:inline-block;font-family:var(--ff-en);font-size:12px;font-weight:700;letter-spacing:.1em;background:var(--cta);color:var(--cta-text);border-radius:9999px;padding:3px 14px}
.page-hero h1{font-size:clamp(1.7rem,3.4vw,2.5rem);line-height:1.4;font-weight:900;margin-top:14px}
.page-hero p{margin-top:12px;color:rgba(255,255,255,.85);max-width:40em}

/* breadcrumb */
.crumb{font-size:12.5px;color:var(--muted);padding:14px 0;border-bottom:1px solid var(--border)}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.crumb li+li::before{content:"›";margin-right:6px;color:var(--border)}
.crumb a:hover{color:var(--primary)}

/* column list */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:40px 0 28px}
.filters button{font:inherit;font-size:14px;font-weight:700;border:1.5px solid var(--primary);color:var(--primary);background:#fff;padding:7px 18px;border-radius:9999px;cursor:pointer}
.filters button[aria-pressed="true"]{background:var(--primary);color:#fff}
.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.col{border-radius:16px;overflow:hidden;border:1px solid var(--border);background:#fff;transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column}
.col:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.col img{aspect-ratio:16/9;object-fit:cover;width:100%}
.col-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.col-meta{display:flex;gap:8px;align-items:center;font-size:12px;color:var(--muted)}
.cat{font-size:11px;font-weight:700;color:#fff;background:var(--primary);border-radius:9999px;padding:1px 10px}
.col-body h2,.col-body h3{font-size:16px;line-height:1.6}
.col-body p{font-size:13.5px;color:var(--muted)}
.col[hidden]{display:none}

/* article layout */
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding:48px 24px 96px;align-items:start}
.article-head .meta{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;font-size:13px;color:rgba(255,255,255,.8);margin-top:16px}
.article-head .meta .cat{background:#fff;color:var(--primary-dark)}
.eyecatch{border-radius:16px;overflow:hidden;box-shadow:var(--shadow);margin-bottom:32px}
.eyecatch img{width:100%}
.summary{background:var(--bg-subtle);border-left:4px solid var(--primary);border-radius:0 12px 12px 0;padding:22px 24px;margin-bottom:32px}
.summary b{display:block;color:var(--primary);font-size:13px;letter-spacing:.08em;margin-bottom:6px}
.summary p{font-weight:700;font-size:16.5px;line-height:1.8}
.toc{border:1px solid var(--border);border-radius:12px;padding:22px 26px;margin-bottom:40px}
.toc b{font-size:14px}
.toc ol{margin-top:10px;padding-left:1.4em;font-size:14.5px;display:grid;gap:4px}
.toc a{color:var(--primary)}
.toc a:hover{text-decoration:underline}
.prose h2{font-size:clamp(1.3rem,2.4vw,1.6rem);line-height:1.5;font-weight:900;margin:56px 0 18px;padding-bottom:12px;border-bottom:2px solid var(--bg-subtle);position:relative}
.prose h2::after{content:"";position:absolute;left:0;bottom:-2px;width:64px;height:2px;background:var(--primary)}
.prose h3{font-size:1.15rem;line-height:1.6;margin:36px 0 12px;padding-left:12px;border-left:4px solid var(--cta)}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{margin:0 0 20px;padding-left:1.4em;display:grid;gap:6px}
.prose strong{background:linear-gradient(transparent 62%,rgba(216,243,92,.8) 62%)}
.prose a{color:var(--primary);text-decoration:underline}
.prose figure{margin:28px 0}
.prose figure img{border-radius:12px;border:1px solid var(--border);width:100%;max-width:520px;margin:0 auto}
.prose figure.eyecatch img{max-width:none;border:0;border-radius:0}
.prose figcaption{font-size:12.5px;color:var(--muted);margin-top:8px;text-align:center}
.tbl{overflow-x:auto;margin:20px 0 28px;border-radius:12px;border:1px solid var(--border)}
.tbl table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}
.tbl th,.tbl td{padding:12px 14px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
.tbl thead th{background:var(--primary-dark);color:#fff;font-weight:700}
.tbl tbody th{background:var(--bg-subtle);white-space:nowrap}
.tbl tr:last-child th,.tbl tr:last-child td{border-bottom:0}
.note{border-radius:12px;padding:18px 22px;margin:24px 0;font-size:14.5px}
.note b{display:block;margin-bottom:4px}
.note.info{background:var(--bg-subtle)}
.note.warn{background:#FFF7E0;border:1px solid #F2D58A}
.steps{list-style:none;padding:0!important;counter-reset:s;gap:12px!important}
.steps li{counter-increment:s;display:grid;grid-template-columns:40px 1fr;gap:14px;align-items:start;background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px}
.steps li::before{content:counter(s);width:40px;height:40px;border-radius:10px;background:var(--primary);color:#fff;font-family:var(--ff-en);font-weight:800;display:grid;place-items:center}
.checklist{list-style:none;padding:0!important}
.checklist li{display:flex;gap:10px}
.checklist li::before{content:"✓";flex:none;width:22px;height:22px;border-radius:6px;background:var(--cta);color:var(--cta-text);display:grid;place-items:center;font-size:12px;font-weight:800;margin-top:3px}
.faq{display:grid;gap:12px;margin:20px 0 28px}
.faq details{border:1px solid var(--border);border-radius:12px;background:#fff}
.faq summary{list-style:none;cursor:pointer;padding:16px 48px 16px 48px;font-weight:700;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q";position:absolute;left:18px;top:15px;font-family:var(--ff-en);font-weight:800;color:var(--primary)}
.faq summary::after{content:"";position:absolute;right:20px;top:50%;width:8px;height:8px;border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);transform:translateY(-70%) rotate(45deg)}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{padding:0 20px 18px 48px;margin:0;font-size:15px}
.sources{font-size:13px;color:var(--muted)}
.sources li{word-break:break-all}
.author{display:grid;grid-template-columns:64px minmax(0,1fr);gap:16px;align-items:center;border:1px solid var(--border);border-radius:16px;padding:20px;margin-top:48px}
.author img{width:64px;height:64px}
.author b{display:block}
.author p{font-size:13.5px;color:var(--muted);margin:2px 0 0}
.cta-box{margin-top:48px;border-radius:20px;background:var(--grad);color:#fff;padding:36px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}
.cta-box b{font-size:20px;line-height:1.5;display:block}
.cta-box p{margin:6px 0 0;color:rgba(255,255,255,.85);font-size:14.5px}
.related{margin-top:56px}
.related h2{font-size:1.3rem;margin-bottom:20px}
.related .cols{grid-template-columns:repeat(2,1fr)}

/* sidebar */
.side{position:sticky;top:96px;display:grid;gap:20px}
.side-card{border:1px solid var(--border);border-radius:16px;padding:22px;background:#fff}
.side-card.cta{background:var(--primary-dark);color:#fff;border:0;text-align:center}
.side-card.cta img{width:72px;margin:0 auto 8px}
.side-card.cta b{display:block;font-size:16px;line-height:1.5}
.side-card.cta p{font-size:13px;color:rgba(255,255,255,.8);margin:8px 0 16px}
.side-card.cta .btn{width:100%}
.side-card h3{font-size:14px;margin-bottom:12px}
.side-card ul{list-style:none;display:grid;gap:10px;font-size:13.5px}
.side-card li a:hover{color:var(--primary)}
.side-toc ol{padding-left:1.2em;font-size:13px;display:grid;gap:6px}
.side-toc a:hover{color:var(--primary)}

/* legal */
.legal{max-width:860px;margin:0 auto;padding:48px 24px 96px}
.legal h2{font-size:1.25rem;margin:40px 0 12px;padding-left:12px;border-left:4px solid var(--primary)}
.legal p,.legal li{font-size:15px}
.legal ol,.legal ul{padding-left:1.4em;display:grid;gap:6px;margin-bottom:12px}
.legal dl{display:grid;grid-template-columns:220px 1fr;border:1px solid var(--border);border-radius:12px;overflow:hidden}
.legal dt,.legal dd{padding:16px 20px;border-bottom:1px solid var(--border);font-size:14.5px}
.legal dt{background:#F7F9FF;font-weight:700;color:var(--primary-dark)}
.legal dl > :nth-last-child(-n+2){border-bottom:0}
.tbl-plain dl{margin:8px 0 16px}
.tbd{display:inline-block;font-size:12px;font-weight:700;color:#9A3412;background:#FFEDD5;border-radius:4px;padding:1px 8px}
.updated{font-size:13px;color:var(--muted);text-align:right;margin-top:40px}

/* footer */
footer{background:#0E1A55;color:rgba(255,255,255,.75);padding:56px 0 100px;font-size:13px}
.fgrid{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
footer .logo{color:#fff}
footer .logo-mark{background:#fff}
footer address{font-style:normal;margin-top:14px;line-height:1.9}
footer nav ul{list-style:none;display:grid;gap:8px}
footer nav a:hover{color:#fff}
.copy{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;font-family:var(--ff-en);font-size:12px}

.sticky{display:none}

@media (max-width:1023px){
  .nav ul{display:none}
  .article-wrap{grid-template-columns:minmax(0,1fr)}
  .side{position:static}
  .side-toc{display:none}
  .cols{grid-template-columns:1fr 1fr}
}
@media (max-width:639px){
  .nav .btn{display:none}
  .cols,.related .cols{grid-template-columns:1fr}
  .cta-box{grid-template-columns:minmax(0,1fr);padding:28px 22px}
  .tbl table:not(:has(thead)){min-width:0}
  .tbl tbody th{white-space:normal;width:5.5em}
  .btn{white-space:normal;text-align:center}
  .legal dl{grid-template-columns:1fr}
  .legal dt{border-bottom:0;padding-bottom:4px}
  .legal dd{padding-top:4px}
  .sticky{display:block;position:fixed;left:12px;right:12px;bottom:12px;z-index:30}
  .sticky .btn{width:100%;padding:15px}
}