:root{
  --bg:#f3f5f8; --surface:#ffffff; --surface-2:#eef1f5;
  --ink:#131925; --ink-2:#4a5263; --muted:#80879a;
  --grid:#e4e8ee; --axis:#c3c9d4; --line:rgba(19,25,37,.10);
  --accent:#27378c; --accent-soft:#e6e9f7;
  --s1:#2a78d6; --s2:#eb6834; --s3:#1baf7a; --s4:#eda100;
  --seq1:#cde2fb; --seq2:#9ec5f4; --seq3:#6da7ec; --seq4:#3987e5; --seq5:#256abf; --seq6:#104281;
  --coh-old:#256abf; --coh-new:#6da7ec;  /* WEBサイト調査の2時期 */
  --shade:rgba(128,135,154,.12); --tile-hi:#ffffff;
  --mast-img:var(--mast-src, url(title-bg.jpg)); --city-display:none;
  --sky-top:#e3e9f5; --bldg:#27378c; --bldg-a:.10; --win:#ffffff; --win-a:.55; --lit:#eda100; --lit-a:.55;
  --f-display:"Zen Kaku Gothic New","Hiragino Kaku Gothic ProN","Yu Gothic",system-ui,sans-serif;
  --f-body:"Noto Sans JP","Hiragino Sans","Yu Gothic UI","Meiryo",system-ui,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"Cascadia Mono",Consolas,monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --bg:#0e1116; --surface:#161a21; --surface-2:#1d222b;
    --ink:#eef1f6; --ink-2:#b5bccb; --muted:#858c9c;
    --grid:#252b35; --axis:#3a414e; --line:rgba(255,255,255,.10);
    --accent:#a5b1f5; --accent-soft:#232a45;
    --s1:#3987e5; --s2:#d95926; --s3:#199e70; --s4:#c98500;
    --seq1:#1b2a44; --seq2:#184f95; --seq3:#256abf; --seq4:#3987e5; --seq5:#6da7ec; --seq6:#b7d3f6;
    --coh-old:#5592e2; --coh-new:#2560b8;
    --shade:rgba(133,140,156,.14); --tile-hi:#0e1116;
    --mast-img:none; --city-display:block;
    --sky-top:#141a2c; --bldg:#a5b1f5; --bldg-a:.13; --win:#a5b1f5; --win-a:.10; --lit:#f5b53d; --lit-a:.85;
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#0e1116; --surface:#161a21; --surface-2:#1d222b;
  --ink:#eef1f6; --ink-2:#b5bccb; --muted:#858c9c;
  --grid:#252b35; --axis:#3a414e; --line:rgba(255,255,255,.10);
  --accent:#a5b1f5; --accent-soft:#232a45;
  --s1:#3987e5; --s2:#d95926; --s3:#199e70; --s4:#c98500;
  --seq1:#1b2a44; --seq2:#184f95; --seq3:#256abf; --seq4:#3987e5; --seq5:#6da7ec; --seq6:#b7d3f6;
  --coh-old:#5592e2; --coh-new:#2560b8;
  --shade:rgba(133,140,156,.14); --tile-hi:#0e1116;
  --sky-top:#141a2c; --bldg:#a5b1f5; --bldg-a:.13; --win:#a5b1f5; --win-a:.10; --lit:#f5b53d; --lit-a:.85;
  --mast-img:none; --city-display:block;
}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:14px;line-height:1.7;-webkit-font-smoothing:antialiased}
.wrap{max-width:1180px;margin:0 auto;padding-inline:20px;padding-block:0 64px}
a{color:var(--accent)}
h1,h2,h3{font-family:var(--f-display);text-wrap:balance;margin:0;letter-spacing:.01em}
.num,.tab{font-variant-numeric:tabular-nums}
.mono{font-family:var(--f-mono)}

/* header */
.mast{position:relative;isolation:isolate;overflow:hidden;display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px 32px;
  margin-inline:-20px;padding-inline:20px;padding-block:44px 26px;border-bottom:1px solid var(--line);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--bg) 72%, transparent) 0%, color-mix(in srgb, var(--bg) 30%, transparent) 42%, transparent 62%),
    var(--mast-img) right bottom / cover no-repeat,
    linear-gradient(180deg, var(--sky-top) 0%, var(--bg) 100%)}
.mast > *{position:relative;z-index:1}
.mast .city{display:var(--city-display);position:absolute;inset:0;z-index:0;width:100%;height:100%;pointer-events:none;
  -webkit-mask-image:linear-gradient(90deg, transparent 0%, rgba(0,0,0,.35) 30%, #000 62%);mask-image:linear-gradient(90deg, transparent 0%, rgba(0,0,0,.35) 30%, #000 62%)}
.mast .asof{background:color-mix(in srgb, var(--bg) 78%, transparent);backdrop-filter:blur(4px);padding:8px 12px;border-radius:10px}
.mast h1{font-size:clamp(28px,4.4vw,44px);font-weight:900;line-height:1.1;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.mast h1 .ttl{display:flex;align-items:center;gap:14px}
.logo{flex:none;width:clamp(48px,6vw,64px);height:clamp(48px,6vw,64px);display:grid;place-items:center}
.logo img{width:100%;height:100%;object-fit:contain;display:block}
.mast .eyebrow{font-family:var(--f-mono);font-size:12px;font-weight:500;letter-spacing:.14em;color:var(--muted);margin:0 0 10px;text-transform:uppercase}
.mast h1 small{display:block;flex-basis:100%;font-family:var(--f-mono);font-size:12px;font-weight:500;letter-spacing:.14em;color:var(--muted);margin-bottom:10px;text-transform:uppercase}
.mast p{margin:10px 0 0;color:var(--ink-2);max-width:62ch}
/* 日本語は文節で折り返す（Chrome/Edge。未対応ブラウザは通常の折り返し） */
.mast p,.sec-head .lede,.summary,.note{word-break:auto-phrase;text-wrap:pretty}
.mast h1{word-break:auto-phrase}
.mast h1 .ttl{min-width:0;overflow-wrap:anywhere}
.asof{font-family:var(--f-mono);font-size:12px;color:var(--ink-2);text-align:right;line-height:1.6}
.asof b{display:block;font-size:20px;color:var(--ink);font-weight:500}

nav.toc{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);margin-inline:-20px;padding-inline:20px}
nav.toc{display:flex;flex-wrap:wrap;align-items:center;gap:0 12px}
nav.toc ul{display:flex;flex-wrap:wrap;gap:0 2px;list-style:none;margin:0;padding:6px 0 2px;scrollbar-width:none;flex:1 1 100%;min-width:0}
.pf{display:flex;flex-wrap:wrap;align-items:center;gap:6px;white-space:nowrap;font-size:12px;color:var(--muted);flex:none;margin-left:auto;padding:2px 0 8px}
.pf .seg{padding:2px}
.pf .seg button{padding:3px 9px;font-size:12px}
.pf .sep{width:1px;height:18px;background:var(--line);margin-inline:4px}
@media (max-width:760px){.pf{margin-left:0}}
/* スマホ: 期間と地域を2行に分け、選択欄を画面幅に合わせる（1行のままだと画面の幅を押し広げてしまう） */
@media (max-width:560px){
  .pf{flex:1 1 100%;white-space:normal}
  .pf .sep{flex-basis:100%;height:0;margin:0;background:none}
  .pf select{flex:1 1 0;min-width:0}
}
@media (max-width:560px){nav.toc ul{flex-wrap:nowrap;overflow-x:auto}}
.pf select.on{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);font-weight:700}
.pfTag{color:var(--accent)}
nav.toc a{display:block;white-space:nowrap;padding:5px 10px;border-radius:999px;color:var(--ink-2);text-decoration:none;font-size:13px}
nav.toc a:hover{background:var(--surface-2);color:var(--ink)}
nav.toc a:focus-visible,button:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

section{padding-block:40px 8px;scroll-margin-top:130px}
.sec-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:10px 24px;margin-bottom:18px}
.sec-head h2{font-size:24px;font-weight:700;display:flex;align-items:center;gap:10px}
.hico{flex:none;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent)}
.hico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.sec-head .lede{color:var(--ink-2);margin:6px 0 0;max-width:84ch;font-size:13.5px}
.controls{display:flex;flex-wrap:wrap;gap:8px;align-items:center}

.seg{display:inline-flex;background:var(--surface-2);border-radius:8px;padding:3px;gap:2px}
.seg button{font:inherit;font-size:12.5px;border:0;background:transparent;color:var(--ink-2);padding:5px 12px;border-radius:6px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.08);font-weight:500}
select{font:inherit;font-size:13px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:5px 28px 5px 10px}
label.ctl{font-size:12px;color:var(--muted);display:inline-flex;align-items:center;gap:6px}

.panel{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px 18px 14px}
.panel h3{font-size:14.5px;font-weight:700;margin-bottom:2px}
.panel .sub{font-size:12px;color:var(--muted);margin:0 0 10px}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr));gap:16px}
.grid-map{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:16px}
@media (max-width:820px){.grid-map{grid-template-columns:1fr}}
/* 都道府県ランキング: 地図と同じ高さに収め、47件はパネルの中でスクロール */
.rankPanel{display:flex;flex-direction:column}
.rankPanel h3 small{font-size:11.5px;font-weight:500;color:var(--muted);margin-left:6px}
.rankScroll{position:relative;flex:1 1 0;min-height:260px;contain:size;overflow-y:auto;overscroll-behavior:contain;padding-right:8px;
  -webkit-mask-image:linear-gradient(180deg,#000 calc(100% - 28px),transparent);mask-image:linear-gradient(180deg,#000 calc(100% - 28px),transparent);padding-bottom:22px}
.rankScroll:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.rank .rk{display:inline-block;min-width:1.9em;color:var(--muted);font-variant-numeric:tabular-nums}
@media (max-width:820px){.rankScroll{flex:none;contain:none;max-height:430px}}

/* KPI */
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr));gap:0;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.kpi{padding:16px 18px;border-right:1px solid var(--line)}
.kpi:last-child{border-right:0}
.kpi .k{font-size:12px;color:var(--muted);letter-spacing:.04em}
.kpi .v{font-family:var(--f-display);font-weight:700;font-size:30px;line-height:1.25;margin-top:4px}
.kpi .v small{font-size:14px;font-weight:500;color:var(--ink-2);margin-left:2px}
.kpi .d{font-size:12px;color:var(--ink-2);margin-top:2px}
.up{color:#0b7a3b}.down{color:#b3372f}
:root[data-theme="dark"] .up{color:#3cc774} :root[data-theme="dark"] .down{color:#ef7d73}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .up{color:#3cc774}:root:not([data-theme="light"]) .down{color:#ef7d73}}
.split{display:flex;height:8px;border-radius:4px;overflow:hidden;gap:2px;margin-top:10px}
.split span{display:block;height:100%}

/* charts */
.chart{position:relative;width:100%}
.chart svg{display:block;width:100%;height:auto;overflow:visible}
.chart text{font-family:var(--f-body);font-size:11px;fill:var(--muted)}
.chart .tick line{stroke:var(--grid)}
.chart .base{stroke:var(--axis)}
.legend{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:12px;color:var(--ink-2);margin:0 0 8px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.legend i.ln{height:3px;border-radius:2px;vertical-align:3px;width:14px}
.tip{position:absolute;pointer-events:none;z-index:4;background:var(--surface);border:1px solid var(--line);box-shadow:0 6px 20px rgba(0,0,0,.14);border-radius:8px;padding:8px 10px;font-size:12px;line-height:1.55;min-width:150px;color:var(--ink)}
.tip b{font-weight:700;display:block;margin-bottom:2px}
.tip .row{display:flex;justify-content:space-between;gap:16px}
.tip .row span:first-child{color:var(--ink-2)}
.tip i{display:inline-block;width:8px;height:8px;border-radius:2px;margin-right:6px}
.note{font-size:12px;color:var(--muted);margin:8px 0 0}

/* ranking bars */
.rank{display:grid;gap:5px;font-size:12.5px}
.rank .r{display:grid;grid-template-columns:7.5em 1fr 5.2em;align-items:center;gap:8px}
.rank .r .n{text-align:right;color:var(--ink-2)}
.rank .bar{height:12px;background:var(--surface-2);border-radius:3px;overflow:hidden}
.rank .bar span{display:block;height:100%;border-radius:0 3px 3px 0}
.rank.wide .r{grid-template-columns:9em 1fr 7.5em}
.rank .r.sel .lbl{font-weight:700;color:var(--accent)}

/* tile map */
.tiles{display:grid;grid-template-columns:repeat(12,1fr);gap:3px;max-width:520px;margin:0 auto}
.tile{aspect-ratio:1;border-radius:5px;display:flex;align-items:center;justify-content:center;font-size:clamp(8px,1.5vw,11.5px);line-height:1;cursor:default;position:relative;border:1px solid transparent}
.tile:hover{border-color:var(--ink)}
.scale{display:flex;align-items:center;gap:0;font-size:11px;color:var(--muted);margin-top:12px;flex-wrap:wrap}
.scale span{display:inline-flex;flex-direction:column;align-items:flex-start;gap:3px;min-width:56px}
.scale span i{display:block;width:100%;height:10px}

/* word cloud */
.cloud{position:relative;width:100%;aspect-ratio:16/9;max-height:440px}
.cloud svg{width:100%;height:100%}
.cloud text{cursor:pointer;font-family:var(--f-display);font-weight:700}
.cloud text:hover{fill:var(--accent)!important}
.cloud text.sel{fill:var(--accent)!important}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{font:inherit;font-size:12.5px;border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:3px 10px;cursor:pointer;color:var(--ink)}
.chip small{color:var(--muted);margin-left:4px}
.chip[aria-pressed="true"]{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}

table.t{width:100%;border-collapse:collapse;font-size:12.5px}
table.t th,table.t td{padding:6px 8px;border-bottom:1px solid var(--line);text-align:right;white-space:nowrap}
table.t th:first-child,table.t td:first-child{text-align:left}
table.t th{font-weight:500;color:var(--muted);font-size:11.5px}
.scroll{overflow-x:auto}

input[type="search"]{font:inherit;font-size:13px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:5px 10px;width:14em;max-width:100%}
input[type="checkbox"]{accent-color:var(--accent)}
table.t th button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;white-space:nowrap}
table.t th[aria-sort] button{color:var(--ink);font-weight:700}
table.t th[aria-sort="descending"] button::after{content:" ↓"}
table.t th[aria-sort="ascending"] button::after{content:" ↑"}
table.t td.dim{color:var(--muted)}
table.t tbody tr:hover td{background:var(--surface-2)}
.more{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;margin-top:10px;font-size:12px;color:var(--muted)}
.btn{font:inherit;font-size:12.5px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:8px;padding:5px 12px;cursor:pointer}
.btn:hover{background:var(--surface-2)}
.wsearch{display:flex;flex-direction:column;gap:8px;margin-bottom:14px}
.wsearch input{width:100%}
.wsearch .hint{font-size:12px;color:var(--muted);margin:0}
.xform{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:flex-end;margin-bottom:14px}
.xform .f{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted)}
.xform .f select{min-width:9em}
.xnote{font-size:12px;color:var(--ink-2);margin:0 0 10px}
table.x{border-collapse:collapse;font-size:12.5px;width:max-content;min-width:100%}
table.x th,table.x td{padding:5px 10px;border-bottom:1px solid var(--line);text-align:right;white-space:nowrap}
table.x th{font-weight:500;color:var(--muted);font-size:11.5px;position:sticky;top:0;background:var(--surface)}
table.x th:first-child,table.x td:first-child{text-align:left;position:sticky;left:0;background:var(--surface);z-index:1}
table.x th button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
table.x th[aria-sort] button{color:var(--ink);font-weight:700}
table.x tr.tot td{font-weight:700;border-top:2px solid var(--axis)}
table.x td.dim{color:var(--muted)}
.xwrap{overflow:auto;max-height:560px;border:1px solid var(--line);border-radius:8px}
.donut{display:flex;flex-wrap:wrap;align-items:center;gap:16px 28px}
.donut svg{width:190px;height:190px;flex:none}
.donut .dl{display:grid;gap:8px;font-size:13px;min-width:0;flex:1}
.donut .dl div{display:grid;grid-template-columns:12px 1fr auto;gap:8px;align-items:baseline}
.donut .dl i{width:12px;height:12px;border-radius:3px;transform:translateY(1px)}
.donut .dl b{font-variant-numeric:tabular-nums}
.cmp100{display:grid;gap:12px;font-size:12.5px;margin:2px 0 6px;position:relative}
.cmp100 .r{display:grid;grid-template-columns:10.5em 1fr 8em;align-items:center;gap:12px}
.cmp100 .lbl{line-height:1.35;color:var(--ink)}
.cmp100 .lbl i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.cmp100 .lbl small{display:block;color:var(--muted);font-size:11px;padding-left:16px}
.bar100{display:flex;gap:2px;height:18px}
.bar100 span{height:100%;min-width:0}
.bar100 span:first-child{border-radius:4px 0 0 4px}.bar100 span:last-child{border-radius:0 4px 4px 0}
.cmp100 .n{color:var(--ink-2);font-variant-numeric:tabular-nums;line-height:1.45;font-size:12px}
.cmp100 .n b{color:var(--ink);font-weight:700}
.panel h4{font-size:13px;font-weight:700;margin:18px 0 4px;color:var(--ink)}
.panel h4:first-of-type{margin-top:10px}
@media (max-width:560px){.cmp100 .r{grid-template-columns:1fr 6.6em;gap:4px 10px}.cmp100 .lbl{grid-column:1/-1}}
.donut .dl small{grid-column:2/-1;color:var(--muted);font-size:11.5px;margin-top:-4px}
.compare{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:12px;margin-bottom:16px}
.compare div{background:var(--surface-2);border-radius:10px;padding:12px 14px;font-size:12.5px;color:var(--ink-2)}
.compare b{display:block;color:var(--ink);font-size:13px;margin-bottom:2px}
.tile{cursor:pointer}
.tile.sel{outline:2px solid var(--accent);outline-offset:1px}
.about{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:24px;font-size:13px;color:var(--ink-2)}
.about h3{font-size:14px;color:var(--ink);margin-bottom:6px}
.about ul{margin:0;padding-left:1.2em}
.about li{margin-bottom:4px}
.about > div{min-width:0}
.about a{overflow-wrap:anywhere}  /* 長いURLが隣の列にはみ出さないように */
.summary{max-width:84ch;margin:-4px 0 16px;font-size:13.5px;color:var(--ink-2);line-height:1.8}
.summary p{margin:0}
.summary:empty{display:none}
.sumtag{display:inline-block;font-size:11px;font-weight:700;color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:1px 9px;margin-right:8px;vertical-align:1px}
.crumb{font-size:12px;color:var(--ink-2);margin:0 0 10px}
.crumb a{color:var(--ink-2)}
footer p{margin:0 0 6px}
.sitenav{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:18px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.sitenav h3{font-size:13px;color:var(--ink);margin:0 0 6px}
.sitenav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 10px}
.sitenav a{color:var(--ink-2);text-decoration:none;font-size:12.5px}
.sitenav a:hover{color:var(--accent);text-decoration:underline}
footer{margin-top:40px;padding-top:16px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
@media (prefers-reduced-motion:no-preference){.tile,.rank .bar span{transition:background-color .25s,width .35s}}
@media (max-width:560px){.wrap{padding-inline:16px}nav.toc{margin-inline:-16px;padding-inline:16px}.mast{margin-inline:-16px;padding-inline:16px}.kpi{border-right:0;border-bottom:1px solid var(--line)}.rank .r{grid-template-columns:6em 1fr 4.6em}.rank.wide .r{grid-template-columns:7.5em 1fr 6.8em}.rank.wide .lbl{line-height:1.3}}

.sd-band{background:#1a2a4a;padding:10px 20px;font-size:13px;line-height:1.5}
.sd-band-in{max-width:1180px;margin-inline:auto;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 16px}
.sd-band a{color:rgba(255,255,255,.78);text-decoration:none}
.sd-band a:hover{color:#fff;text-decoration:underline}
.sd-home{display:flex;align-items:center;gap:8px;font-weight:600}
.sd-band a.sd-home{color:#fff}
.sd-home img{width:30px;height:auto;display:block;filter:brightness(0) invert(1)}
.sd-band nav{display:flex;gap:4px 16px;flex-wrap:wrap}
@media (max-width:560px){.sd-band{padding-inline:16px}}