:root {
  --bg: #ffffff;
  --surface: #f4f7fb;
  --surface-2: #e9eff7;
  --text: #16202e;
  --muted: #566274;
  --line: #dbe2ec;
  --brand: #14467f;
  --brand-2: #1f6fd1;
  --brand-soft: #e6f0fc;
  --on-brand: #ffffff;
  --hi: #e6f0fc;
  --shadow: 0 1px 2px rgba(16, 32, 56, .06), 0 8px 24px rgba(16, 32, 56, .06);
  --s0: #1f6fd1;
  --s1: #e8590c;
  --s2: #2b8a3e;
  --s3: #7048e8;
  --s4: #c2255c;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f141b;
    --surface: #161d27;
    --surface-2: #1d2633;
    --text: #e7ebf1;
    --muted: #9ba6b6;
    --line: #2a3442;
    --brand: #8ab8f5;
    --brand-2: #8ab8f5;
    --brand-soft: #1a2b42;
    --on-brand: #0b1220;
    --hi: #1a2b42;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3);
    --s0: #8ab8f5;
    --s1: #ff922b;
    --s2: #69db7c;
    --s3: #b197fc;
    --s4: #f783ac;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", Meiryo, sans-serif;
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand-2); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.page { padding-bottom: 64px; max-width: 960px; }
h1 { font-size: 1.75rem; line-height: 1.45; margin: 8px 0 16px; letter-spacing: .01em; }
h2 { font-size: 1.25rem; line-height: 1.5; margin: 40px 0 12px; }
h3 { font-size: 1.02rem; line-height: 1.5; margin: 0 0 6px; }
p { margin: 0 0 12px; }
small { font-size: .75em; }

/* ヘッダー */
.site-header { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: saturate(1.4) blur(8px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; letter-spacing: .04em; }
.logo { width: 30px; height: 30px; flex: none; }
.logo-bg { fill: var(--brand); }
.logo-fg { fill: var(--on-brand); }
.site-header nav { display: flex; gap: 24px; align-items: center; font-size: .92rem; }
.site-header nav a { color: var(--text); text-decoration: none; }
.site-header nav a:hover { color: var(--brand-2); }
.site-header nav .nav-cta { background: var(--brand); color: var(--on-brand); padding: 8px 16px; border-radius: 8px; font-weight: 600; }
.site-header nav .nav-cta:hover { color: var(--on-brand); opacity: .9; }

/* 共通部品 */
.eyebrow { color: var(--brand-2); font-weight: 700; font-size: .85rem; letter-spacing: .06em; margin: 32px 0 4px; }
.button { display: inline-block; background: var(--brand); color: var(--on-brand); padding: 12px 22px; border-radius: 8px; text-decoration: none; font-weight: 700; border: 1px solid var(--brand); font-size: 1rem; cursor: pointer; line-height: 1.4; }
.button:hover { opacity: .92; }
.button.secondary { background: var(--bg); color: var(--brand); border-color: var(--line); }
.button.light { background: #fff; color: #14467f; border-color: #fff; }
.tag { display: inline-block; margin-left: 6px; font-size: .75rem; font-weight: 600; color: var(--brand-2); background: var(--brand-soft); padding: 1px 8px; border-radius: 4px; white-space: nowrap; }
.note { color: var(--muted); font-size: .85rem; }
.crumbs { font-size: .85rem; color: var(--muted); margin-top: 24px; }
.crumbs a { color: var(--muted); }
.small-title { font-size: .95rem; margin: 0 0 8px; color: var(--muted); }

/* トップ */
.hero { background: linear-gradient(180deg, var(--brand-soft) 0%, var(--bg) 100%); border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; padding-top: 56px; padding-bottom: 64px; }
.hero h1 { font-size: 2.2rem; line-height: 1.4; margin: 4px 0 18px; }
.hero .eyebrow { margin-top: 0; }
.lead { font-size: 1.05rem; color: var(--muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 12px; }
.hero-note { font-size: .8rem; color: var(--muted); }
.preview-card { background: var(--bg); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); padding: 20px 22px; }
.pc-head { display: flex; justify-content: space-between; font-weight: 700; font-size: .9rem; border-bottom: 1px solid var(--line); padding-bottom: 10px; margin-bottom: 12px; }
.pc-date { color: var(--muted); font-weight: 400; }
.pc-metric { margin-bottom: 14px; }
.pc-label { font-size: .8rem; color: var(--muted); margin: 0 0 6px; }
.pc-row { display: grid; grid-template-columns: 56px 1fr 44px; gap: 10px; align-items: center; font-size: .85rem; margin: 4px 0; }
.pc-bar { height: 10px; background: var(--surface-2); border-radius: 5px; overflow: hidden; }
.pc-bar i { display: block; height: 100%; background: var(--brand-2); border-radius: 5px; }
.pc-val { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
.pc-foot { font-size: .75rem; color: var(--muted); margin: 8px 0 0; }
.band { padding: 64px 0; }
.band.muted { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-title { font-size: 1.5rem; margin: 0 0 28px; }
.features, .usecases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature, .usecase { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 24px; }
.feature p, .usecase p { color: var(--muted); font-size: .92rem; margin: 0; }
.feature-icon { width: 40px; height: 40px; border-radius: 10px; background: var(--brand-soft); color: var(--brand-2); display: grid; place-items: center; margin-bottom: 14px; }
.feature-icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.usecase h3 { padding-left: 12px; border-left: 3px solid var(--brand-2); }
.two-col { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; }
.two-col .section-title { margin-bottom: 16px; }
.source-list { margin: 0; padding-left: 20px; }
.faq { margin: 0; max-width: 800px; }
.faq dt { font-weight: 700; margin-top: 20px; }
.faq dd { margin: 6px 0 0; color: var(--muted); }
.cta-band { background: #14467f; color: #fff; padding: 56px 0; text-align: center; }
.cta-band h2 { margin: 0 0 8px; font-size: 1.4rem; }
.cta-band p { color: #d6e4f5; }

/* 検索・都道府県 */
.search { position: relative; max-width: 520px; margin-bottom: 32px; }
.search label { display: block; font-weight: 600; margin-bottom: 6px; }
.search input { width: 100%; font-size: 1rem; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); }
.search input:focus { outline: 2px solid var(--brand-2); outline-offset: 1px; }
#results { list-style: none; margin: 4px 0 0; padding: 4px 0; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); position: absolute; width: 100%; z-index: 5; max-height: 320px; overflow-y: auto; box-shadow: var(--shadow); }
#results:empty { display: none; }
#results a { display: block; padding: 8px 14px; text-decoration: none; color: var(--text); }
#results a:hover, #results a:focus { background: var(--surface); }
.pref-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.pref-group { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; }
.pref-group h3 { font-size: .85rem; color: var(--muted); margin-bottom: 8px; }
.pref-links { display: flex; flex-wrap: wrap; gap: 4px 14px; }
.pref-links a { text-decoration: none; }
.pref-links a:hover { text-decoration: underline; }

/* 市区町村・レポート */
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 8px 0 20px; }
.kpi { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.kpi-label { font-size: .78rem; color: var(--muted); margin: 0 0 4px; }
.kpi-value { font-size: 1.45rem; font-weight: 700; margin: 0; font-variant-numeric: tabular-nums; line-height: 1.3; }
.kpi-value small { font-size: .8rem; font-weight: 600; margin-left: 3px; color: var(--muted); }
.kpi-year { font-size: .72rem; color: var(--muted); margin: 2px 0 0; }
.summary { border-left: 3px solid var(--brand-2); padding: 4px 0 4px 16px; margin: 8px 0 8px; }
.summary p { margin: 4px 0; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); border-radius: 10px; }
table.data { border-collapse: collapse; width: 100%; font-size: .92rem; }
table.data th, table.data td { padding: 10px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; white-space: nowrap; }
table.data tbody tr:last-child th, table.data tbody tr:last-child td { border-bottom: 0; }
table.data thead th { font-size: .78rem; color: var(--muted); font-weight: 600; background: var(--surface); }
table.data tbody tr:hover { background: var(--surface); }
table.data td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.data td.year { color: var(--muted); font-size: .8rem; }
table.data td.hi { background: var(--hi); font-weight: 700; }
table.data small { color: var(--muted); }
.pos { display: inline-block; position: relative; width: 120px; height: 6px; background: var(--surface-2); border-radius: 3px; vertical-align: middle; }
.pos-dot { position: absolute; top: 50%; width: 12px; height: 12px; margin: -6px 0 0 -6px; background: var(--brand-2); border: 2px solid var(--bg); border-radius: 50%; box-shadow: 0 0 0 1px var(--brand-2); }
.chart { margin: 8px 0; border: 1px solid var(--line); border-radius: 10px; padding: 12px 12px 8px; }
.chart svg { width: 100%; height: auto; display: block; }
.chart .grid { stroke: var(--line); stroke-width: 1; }
.chart .tick { fill: var(--muted); font-size: 12px; }
.chart polyline { stroke-width: 2.5; }
.chart figcaption { color: var(--muted); font-size: .8rem; }
.s0 { stroke: var(--s0); fill: var(--s0); }
.s1 { stroke: var(--s1); fill: var(--s1); }
.s2 { stroke: var(--s2); fill: var(--s2); }
.s3 { stroke: var(--s3); fill: var(--s3); }
.s4 { stroke: var(--s4); fill: var(--s4); }
polyline.s0, polyline.s1, polyline.s2, polyline.s3, polyline.s4 { fill: none; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: .85rem; }
.legend i { display: inline-block; width: 14px; height: 3px; margin-right: 6px; vertical-align: middle; }
.k0 { background: var(--s0); } .k1 { background: var(--s1); } .k2 { background: var(--s2); } .k3 { background: var(--s3); } .k4 { background: var(--s4); }
.offer { background: var(--brand-soft); border-radius: 12px; padding: 8px 24px 20px; margin-top: 40px; }
.offer h2 { margin-top: 16px; }
.offer .button { margin: 4px 8px 4px 0; }
.report-cover { border: 1px solid var(--line); border-top: 4px solid var(--brand); border-radius: 12px; padding: 4px 28px 20px; margin-top: 16px; box-shadow: var(--shadow); }
.report-cover .eyebrow { margin-top: 12px; }
.sample-flag { display: inline-block; background: var(--brand-soft); color: var(--brand-2); font-weight: 600; padding: 2px 10px; border-radius: 4px; font-size: .8rem; margin: 16px 0 0; }
.cover-meta { display: grid; grid-template-columns: repeat(3, auto); justify-content: start; gap: 8px 32px; margin: 16px 0 0; font-size: .85rem; }
.cover-meta dt { color: var(--muted); font-size: .75rem; }
.cover-meta dd { margin: 0; }
.city-cards { display: grid; gap: 16px; }
.city-card h3 { margin-bottom: 8px; }
.city-card .kpis { margin: 0; }
.findings li { margin: 6px 0; }
.sources ul { font-size: .9rem; }
.info-table { border-collapse: collapse; width: 100%; max-width: 720px; }
.info-table th, .info-table td { border-bottom: 1px solid var(--line); padding: 12px 8px; text-align: left; vertical-align: top; }
.info-table th { width: 9em; color: var(--muted); font-weight: 600; }

/* フォーム */
.form { max-width: 600px; display: grid; gap: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 24px; }
.form label { display: grid; gap: 6px; font-weight: 600; }
.form input[type=email], .form select, .form textarea { font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); font-weight: 400; }
.form fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; background: var(--bg); }
.form legend { font-weight: 600; padding: 0 4px; }
.form label.check { display: flex; gap: 8px; align-items: center; font-weight: 400; }
.form .hp { position: absolute; left: -9999px; }
#form-msg { min-height: 1.5em; margin: 0; }

/* フッター */
.site-footer { background: var(--surface); border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; padding: 48px 0 32px; }
.footer-cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.footer-brand p { margin-top: 12px; max-width: 420px; }
.site-footer h2 { font-size: .85rem; color: var(--text); margin: 4px 0 10px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 6px 0; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--brand-2); }
.site-footer .brand { color: var(--text); }
.footer-legal { border-top: 1px solid var(--line); margin-top: 32px; padding-top: 16px; font-size: .75rem; }
.footer-legal p { margin: 4px 0; }

@media (max-width: 860px) {
  .hero-grid, .two-col { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 1.7rem; }
  .features, .usecases, .pref-grid { grid-template-columns: 1fr; }
  .kpis { grid-template-columns: repeat(2, 1fr); }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .site-header nav a:not(.nav-cta) { display: none; }
}
@media (max-width: 600px) {
  h1 { font-size: 1.4rem; }
  .hero-grid { padding-top: 36px; padding-bottom: 40px; }
  .hero h1 { font-size: 1.45rem; }
  .hero h1 br { display: none; }
  .band { padding: 44px 0; }
  .wrap { padding: 0 16px; }
  .pos { width: 72px; }
  .cover-meta { grid-template-columns: 1fr; }
  .report-cover { padding: 4px 18px 16px; }
  .kpi-value { font-size: 1.2rem; }
}