:root{
  --bg:#f5f6f8; --panel:#ffffff; --ink:#15202e; --ink2:#4a5667; --ink3:#6b7686; --line:#e3e7ed; --line2:#eef1f5;
  --pos:#1f6fd1; --pos-soft:#e6f0fc; --neg:#c2530f; --neg-soft:#fdf0e6;
  --accent:#1f6fd1; --map:#0d1522;
  --radius:14px; --shadow:0 1px 2px rgba(16,24,40,.05),0 4px 16px rgba(16,24,40,.06);
  --font:"Microsoft YaHei UI","Microsoft YaHei","PingFang SC","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"SF Mono",Consolas,"Microsoft YaHei UI",monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0b111b; --panel:#121a27; --ink:#e7ecf3; --ink2:#b3bdca; --ink3:#8b97a7; --line:#223044; --line2:#1a2536;
  --pos:#6cb2ff; --pos-soft:#15263d; --neg:#ff9a57; --neg-soft:#35220f; --accent:#6cb2ff; color-scheme:dark;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 6px 20px rgba(0,0,0,.25);
}}
:root[data-theme="dark"]{
  --bg:#0b111b; --panel:#121a27; --ink:#e7ecf3; --ink2:#b3bdca; --ink3:#8b97a7; --line:#223044; --line2:#1a2536;
  --pos:#6cb2ff; --pos-soft:#15263d; --neg:#ff9a57; --neg-soft:#35220f; --accent:#6cb2ff; color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.65;font-weight:400}
h1,h2,h3{font-weight:700;line-height:1.3;margin:0}
a{color:var(--accent)}
button{font:inherit;color:inherit}
.wrap{max-width:1480px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* header */
.masthead{background:var(--panel);border-bottom:1px solid var(--line)}
.masthead .wrap{display:flex;gap:28px;align-items:center;justify-content:space-between;padding-top:20px;padding-bottom:20px;flex-wrap:wrap}
.brand{display:flex;gap:16px;align-items:center;min-width:0;flex:1 1 520px}
.logo{width:52px;height:52px;flex:none}
.brand h1{font-size:30px;letter-spacing:.5px}
.lede{margin:4px 0 0;color:var(--ink2);font-size:16.5px;max-width:720px}
.kpis{display:grid;grid-template-columns:repeat(4,minmax(112px,1fr));gap:10px;flex:0 1 620px}
.kpi{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:10px 14px;display:flex;flex-direction:column}
.k-label{font-size:13.5px;color:var(--ink3)}
.k-val{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}
.k-val.pos{color:var(--pos)} .k-val.neg{color:var(--neg)}

/* layout */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 420px;gap:22px;padding-top:20px;padding-bottom:28px;align-items:start}
.col-side{position:sticky;top:14px;align-self:start}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);max-height:calc(100vh - 28px);overflow:auto;overscroll-behavior:contain;scrollbar-width:thin}

/* map */
.map-section{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.map-bar{padding:12px 14px;border-bottom:1px solid var(--line)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:var(--bg);border-radius:999px;padding:5px 13px;font-size:15px;cursor:pointer;line-height:1.4;display:inline-flex;gap:5px;align-items:center}
.chip:hover{border-color:var(--ink3)}
.chip.on{background:var(--ink);color:var(--panel);border-color:var(--ink)}
.sym{font-size:12px}
.sym.pos{color:var(--pos)} .sym.neg{color:var(--neg)}
.chip.on .sym.pos{color:#8cc4ff} .chip.on .sym.neg{color:#ffb07a}
.map-wrap{position:relative}
#map{height:min(76vh,780px);min-height:440px;background:var(--map);outline:none}
.leaflet-container{font-family:var(--font);background:var(--map)}
.map-hud{position:absolute;top:12px;right:12px;z-index:500;display:flex;gap:8px;align-items:center}
.map-hud span,.map-hud button{background:rgba(13,21,34,.86);color:#dfe8f5;border:1px solid #2a3a52;border-radius:8px;padding:4px 10px;font-size:14px}
.map-hud button{cursor:pointer}
.map-hud button:hover{border-color:#6cb2ff}
.map-hint{position:absolute;left:12px;top:12px;z-index:500;background:rgba(13,21,34,.86);color:#b9c6d8;border:1px solid #2a3a52;border-radius:8px;padding:4px 10px;font-size:14px;pointer-events:none}
.legend{position:absolute;left:12px;bottom:12px;z-index:500;background:rgba(13,21,34,.9);color:#dfe8f5;border:1px solid #2a3a52;border-radius:10px;padding:8px 12px;font-size:13.5px;line-height:1.55}
.lg-row{display:flex;gap:8px;align-items:center}
.sw{display:inline-block;width:30px;height:0;border-top:4px solid}
.sw.pos{border-color:#5aa9ff;box-shadow:0 0 0 1.5px #fff}
.sw.neg{border-color:#ff8c42}
.sw.ramp{border:0;height:6px;border-radius:3px;background:linear-gradient(90deg,#ff8c42,#8a5a3c,#3a4252,#3b6aa0,#5aa9ff)}
.sw.width{border:0;height:0;border-top:1.5px solid #9fb0c6;position:relative}
.sw.width::after{content:"";position:absolute;right:0;top:-4px;width:14px;border-top:5px solid #9fb0c6}
.sw.dotted{border-top:3px dotted #9fb0c6}
.leaflet-tooltip.rt{background:#0f1a2a;color:#e8eef7;border:1px solid #2d3f59;border-radius:8px;font-size:14px;padding:6px 10px;box-shadow:0 4px 14px rgba(0,0,0,.35)}
.leaflet-tooltip.rt::before{display:none}
.rt b{font-size:15px}
.rt .p{color:#8cc4ff} .rt .n{color:#ffb07a}

/* facts */
.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:14px 0 18px}
.fact{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:10px 14px;font-size:14.5px;line-height:1.55;color:var(--ink2)}
.fact b{display:block;color:var(--ink);font-size:15.5px;margin-bottom:2px}
.fact em{font-style:normal;font-weight:700;color:var(--ink)}

/* ranking */
.ranking{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 0 6px}
.rank-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:0 18px;flex-wrap:wrap}
.rank-head h2{font-size:22px}
.rank-head small{font-size:14px;color:var(--ink3);font-weight:400;margin-left:6px}
.rank-tools{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
#q{font:inherit;font-size:15.5px;padding:7px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);width:220px}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.seg button{border:0;background:var(--bg);padding:6px 12px;font-size:15px;cursor:pointer}
.seg button.on{background:var(--ink);color:var(--panel)}
.rank-note{margin:6px 18px 10px;color:var(--ink3);font-size:14.5px}
.table-scroll{overflow:visible}
.rank-table{width:100%;border-collapse:separate;border-spacing:0;font-size:15.5px}
.rank-table thead th{position:sticky;top:0;z-index:2;background:var(--panel);border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;font-weight:700;font-size:14.5px;line-height:1.3;color:var(--ink2);white-space:nowrap}
.rank-table thead th small{font-weight:400;color:var(--ink3);font-size:12.5px}
.rank-table th.sortable{cursor:pointer;user-select:none}
.rank-table th.sortable:hover{color:var(--ink)}
.rank-table th.sortable::after{content:"↕";margin-left:4px;color:var(--ink3);font-weight:400;font-size:12px}
.rank-table th.sortable.asc::after{content:"↑";color:var(--accent)}
.rank-table th.sortable.desc::after{content:"↓";color:var(--accent)}
.rank-table th.c-num,.rank-table td.c-num{text-align:right}
.rank-table td{padding:8px 10px;border-bottom:1px solid var(--line2);vertical-align:middle}
.rank-table tbody tr{cursor:pointer}
.rank-table tbody tr:hover td{background:var(--bg)}
.rank-table tbody tr.sel td{background:var(--pos-soft)}
.rank-table tbody tr.sel td:first-child{box-shadow:inset 3px 0 0 var(--accent)}
.c-rank{width:44px;color:var(--ink3);font-variant-numeric:tabular-nums}
.c-name .nm{font-weight:700}
.c-name .sub{display:block;font-size:13px;color:var(--ink3);line-height:1.35}
td.c-num{font-variant-numeric:tabular-nums;white-space:nowrap}
.pv{display:inline-flex;align-items:center;gap:6px;justify-content:flex-end}
.pv .bar{display:inline-block;height:8px;border-radius:2px}
.pv.p{color:var(--pos)} .pv.n{color:var(--neg)}
.pv.p .bar{background:var(--pos)} .pv.n .bar{background:var(--neg);opacity:.85}
.tag{display:inline-block;font-size:12.5px;padding:1px 8px;border-radius:999px;border:1px solid var(--line);color:var(--ink2);white-space:nowrap}
.tag.disc{border-color:var(--accent);color:var(--accent)}
.muted{color:var(--ink3)}
.prob{font-variant-numeric:tabular-nums}

/* detail card */
.cd-head{position:relative;height:150px;background:var(--map);border-radius:var(--radius) var(--radius) 0 0;overflow:hidden}
.cd-head svg{display:block;width:100%;height:100%}
.cd-head .ttl{position:absolute;left:16px;right:16px;bottom:10px;color:#fff;text-shadow:0 1px 3px rgba(0,0,0,.6)}
.cd-head .ttl h3{font-size:22px}
.cd-head .ttl span{font-size:13.5px;color:#c7d3e3}
.cd-body{padding:14px 16px 18px}
.big{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.big .v{font-size:32px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.15}
.big .v.p{color:var(--pos)} .big .v.n{color:var(--neg)}
.big .u{color:var(--ink3);font-size:15px}
.badges{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0 4px}
.badge{font-size:13px;border-radius:999px;padding:2px 10px;background:var(--bg);border:1px solid var(--line);color:var(--ink2)}
.badge.disc{background:var(--pos-soft);border-color:transparent;color:var(--pos)}
.badge.est{background:var(--neg-soft);border-color:transparent;color:var(--neg)}
.range{font-size:14.5px;color:var(--ink2);margin:4px 0 8px}
.wf{margin:12px 0 6px}
.wf-row{display:grid;grid-template-columns:88px 1fr 76px;gap:8px;align-items:center;font-size:14px;margin:4px 0}
.wf-row .lbl{color:var(--ink2)}
.wf-row .trk{position:relative;height:14px;background:var(--line2);border-radius:3px}
.wf-row .fill{position:absolute;top:0;height:14px;border-radius:3px}
.wf-row .amt{text-align:right;font-variant-numeric:tabular-nums}
.fill.rev{background:var(--pos)} .fill.cost{background:#8b96a8} .fill.res.p{background:var(--pos)} .fill.res.n{background:var(--neg)}
.blocks{display:grid;grid-template-columns:1fr;gap:10px;margin-top:12px}
.blk{border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.blk h4{margin:0 0 4px;font-size:14px;color:var(--ink3);font-weight:700;letter-spacing:.3px}
.blk .main{font-size:16.5px;font-weight:700}
.blk p{margin:2px 0;font-size:14.5px;color:var(--ink2);line-height:1.55}
.blk .kind{font-size:12px;border-radius:6px;padding:0 6px;margin-left:6px;vertical-align:1px;font-weight:400}
.kind.obs{background:var(--pos-soft);color:var(--pos)}
.kind.der{background:var(--line2);color:var(--ink2)}
.kind.asm{background:var(--neg-soft);color:var(--neg)}
.calc{font-family:var(--mono);font-size:13px;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:8px 10px;white-space:pre-wrap;line-height:1.55;color:var(--ink2);overflow-x:auto}
details.more{margin-top:10px}
details.more summary{cursor:pointer;font-weight:700;font-size:15px;color:var(--ink2)}
.src{margin:6px 0 0;padding-left:18px;font-size:14px;color:var(--ink2)}
.src li{margin:3px 0;word-break:break-word}
.overview h3{font-size:20px;margin-bottom:6px}
.overview p{font-size:15px;color:var(--ink2);margin:6px 0}
.ov-list{list-style:none;padding:0;margin:8px 0}
.ov-list li{display:flex;justify-content:space-between;gap:8px;padding:5px 0;border-bottom:1px solid var(--line2);font-size:15px;cursor:pointer}
.ov-list li:hover{color:var(--accent)}
.ov-sub{font-size:14px;color:var(--ink3);margin-top:14px;font-weight:700}
.close-x{position:absolute;right:10px;top:10px;z-index:3;background:rgba(13,21,34,.7);color:#fff;border:1px solid #33465f;border-radius:8px;padding:2px 10px;cursor:pointer;font-size:14px}

/* methods */
.methods{margin-top:22px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 20px}
.methods h2{font-size:22px;margin-bottom:6px}
.methods h3{font-size:18px;margin:18px 0 6px}
.methods p,.methods li{font-size:16px;color:var(--ink2)}
.methods table{border-collapse:collapse;width:100%;font-size:14.5px;margin:8px 0}
.methods th,.methods td{border-bottom:1px solid var(--line);padding:6px 8px;text-align:left;vertical-align:top}
.methods th{color:var(--ink3);font-weight:700}
.methods td.n{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.methods details{border-top:1px solid var(--line);padding:8px 0}
.methods details>summary{cursor:pointer;font-weight:700;font-size:17px;padding:4px 0}
.formula{font-family:var(--mono);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:14px;white-space:pre-wrap;overflow-x:auto}
.foot{padding-bottom:30px;color:var(--ink3);font-size:14px}

/* bottom sheet (phones) */
.sheet{position:fixed;left:0;right:0;bottom:0;z-index:1000;background:var(--panel);border-radius:18px 18px 0 0;box-shadow:0 -8px 30px rgba(0,0,0,.25);transform:translateY(105%);transition:transform .25s ease;max-height:78vh;display:none;flex-direction:column}
.sheet.open{transform:translateY(0)}
.sheet-bar{display:flex;justify-content:space-between;align-items:center;padding:8px 14px;border-bottom:1px solid var(--line)}
.grab{width:44px;height:5px;border-radius:3px;background:var(--line);margin-left:auto;margin-right:auto}
#sheet-close{border:1px solid var(--line);background:var(--bg);border-radius:8px;padding:3px 12px;font-size:15px}
.sheet-body{overflow:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;padding-bottom:env(safe-area-inset-bottom)}

@media (max-width:1180px){
  .layout{grid-template-columns:minmax(0,1fr) 360px}
  .facts{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  .layout{grid-template-columns:1fr;padding-top:14px}
  .col-side{display:none}
  .sheet{display:flex}
  .brand h1{font-size:24px}
  .lede{font-size:15px}
  .kpis{grid-template-columns:repeat(2,minmax(0,1fr));flex:1 1 100%}
  .k-val{font-size:19px}
  #map{height:62vh;min-height:360px}
  .legend{font-size:12.5px;padding:6px 9px}
  .map-hint{font-size:12.5px;max-width:60%}
  .facts{grid-template-columns:1fr;gap:8px}
  .hide-s{display:none}
  .rank-head{padding:8px 12px;position:sticky;top:0;z-index:4;background:var(--panel);border-bottom:1px solid var(--line2)}
  .rank-tools{width:100%}
  #q{flex:1;width:auto;min-width:0;font-size:16px}
  .ranking{padding-top:12px}
  .rank-table{font-size:15px}
  .rank-table td{padding:8px 6px}
  .rank-table thead th{padding:8px 6px;top:var(--rh,0px)}
  .rank-note{margin:6px 12px 8px}
  .c-rank{width:30px}
  .methods{padding:14px}
  .methods table{font-size:13.5px}
  .methods .tw{overflow-x:auto}
}
@media (max-width:420px){
  .legend .lg-row:nth-child(n+4){display:none}
}

.sheet .close-x{display:none}
td.est{color:var(--ink3)}
.methods table.ptab{table-layout:fixed}
.methods table.ptab td{word-break:break-word}
@media (max-width:900px){.methods table.ptab{table-layout:auto;min-width:720px}.methods .tw{overflow-x:auto}}
.cd-head::after{content:"";position:absolute;left:0;right:0;bottom:0;height:70%;background:linear-gradient(to top,rgba(8,13,22,.92),rgba(8,13,22,0));pointer-events:none}
.cd-head .ttl{z-index:2}
.col-main,.layout>*{min-width:0}
.methods .tw{overflow-x:auto;max-width:100%}
.methods p,.methods li,.blk p,.src li,.calc{overflow-wrap:anywhere}
@media (max-width:900px){.map-hint{top:auto;left:auto;right:10px;bottom:10px;max-width:44%;text-align:right}}

/* v2: map modes, city labels, parameters, scatter, sparkline */
.map-bar{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.seg.mode{align-items:center}
.seg .seg-l{font-size:13.5px;color:var(--ink3);padding:0 8px 0 10px;align-self:center}
.seg.mode button{font-size:14.5px}
#map{background:#0a1220}
.leaflet-container{background:#0a1220}
.city{pointer-events:none}
.city i{position:absolute;left:-3px;top:-3px;width:6px;height:6px;border-radius:50%;background:#dfe8f5;box-shadow:0 0 0 2px rgba(10,18,32,.8)}
.city.t2 i{width:4px;height:4px;left:-2px;top:-2px;background:#9fb0c6}
.city span{position:absolute;left:6px;top:-9px;white-space:nowrap;font-size:12.5px;color:#dfe8f5;text-shadow:0 0 3px #0a1220,0 0 3px #0a1220,0 0 6px #0a1220;letter-spacing:.5px}
.city.t2 span{font-size:11.5px;color:#a9b7ca}
.sw.pos{border-color:#9fd2ff;box-shadow:0 0 6px 2px rgba(143,200,255,.55)}
.sw.neg{border-color:#ff8a3c}
.sw.lramp{border:0;height:6px;border-radius:3px;background:linear-gradient(90deg,#44286e,#3b528b,#21918c,#5ec962,#fde725)}
.sw.ev1{border-color:#40c4b2}
.sw.ev0{border-color:#788498}
.adj-btn{border:1px solid var(--line);background:var(--bg);border-radius:10px;padding:6px 12px;font-size:15px;cursor:pointer}
.adj-btn.mod{border-color:var(--neg);color:var(--neg)}
.adj{display:none;margin:10px 18px 0;padding:10px 14px;border:1px solid var(--line);border-radius:12px;background:var(--bg)}
.adj.open{display:block}
.adj-row{display:grid;grid-template-columns:120px 1fr 190px;gap:12px;align-items:center;font-size:15px;padding:4px 0}
.adj-row input{width:100%;accent-color:var(--accent)}
.adj-v{font-variant-numeric:tabular-nums;color:var(--ink2)}
.adj-foot{display:flex;gap:12px;align-items:center;margin-top:6px;font-size:14px;flex-wrap:wrap}
.adj-foot button{border:1px solid var(--line);background:var(--panel);border-radius:8px;padding:4px 12px;cursor:pointer}
.why{margin:0 0 18px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 20px}
.why h2{font-size:22px;margin-bottom:6px}
.why p{font-size:16px;color:var(--ink2);margin:0 0 8px}
#scatter svg{display:block}
#scatter .gx,#scatter .gy{stroke:var(--line2);stroke-width:1}
#scatter .ax{font-size:12px;fill:var(--ink3)}
#scatter .axt{font-size:13px;fill:var(--ink2)}
#scatter .sd{stroke:rgba(255,255,255,.7);stroke-width:.8;opacity:.85;cursor:pointer}
#scatter .sd.sc{stroke:var(--ink3);stroke-dasharray:2 2}
#scatter .sd:hover,#scatter .sd.on{opacity:1;stroke:var(--ink);stroke-width:2.2;stroke-dasharray:none}
#scatter .sl{font-size:12.5px;fill:var(--ink);paint-order:stroke;stroke:var(--panel);stroke-width:3px;pointer-events:none}
.spark{width:100%;height:auto;display:block;margin:4px 0 2px}
.spark polyline{fill:none;stroke:var(--accent);stroke-width:2}
.spark circle{fill:var(--accent)}
.spark text{font-size:11px;fill:var(--ink3)}
@media (max-width:900px){
  .adj{margin:8px 12px 0}
  .adj-row{grid-template-columns:1fr;gap:2px}
  .why{padding:14px}
  .seg.mode button{font-size:13.5px;padding:6px 8px}
  .city.t1 span{font-size:11.5px}
}
@media (max-width:900px){
  .rank-table td.c-name{width:40%}
  .c-name .nm{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.3}
  .c-name .sub{display:none}
  .pv .bar{display:none}
  .rank-table td{padding:6px 6px}
}

/* ===== v3 visual refresh: map ===== */
.map-wrap{background:radial-gradient(120% 95% at 58% 42%,#10203a 0%,#0a1527 50%,#060c17 100%)}
#map,#map.leaflet-container{background:transparent!important}
.map-wrap::after{content:"";position:absolute;inset:0;pointer-events:none;box-shadow:inset 0 0 140px rgba(0,0,0,.5);z-index:399}
.legend,.map-hud span,.map-hud button,.map-hint{background:rgba(8,15,28,.78);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(130,160,200,.2)}
.legend{border-radius:12px;padding:10px 13px 9px;min-width:196px;color:#dbe6f3;box-shadow:0 8px 28px rgba(0,0,0,.35)}
.lg-title{font-size:13px;font-weight:700;margin-bottom:6px;letter-spacing:.3px;color:#eef4fb}
.lg-title small{font-weight:400;color:#8ea2bb;margin-left:4px;font-size:11.5px}
.lg-bar{height:7px;border-radius:4px;margin:2px 0 4px}
.lg-ticks{display:flex;justify-content:space-between;font-size:11.5px;color:#9fb2c9;font-variant-numeric:tabular-nums}
.lg-sub{font-size:11.5px;color:#8ea2bb;margin:9px 0 5px;padding-top:8px;border-top:1px solid rgba(130,160,200,.16)}
.lg-widths{display:flex;gap:14px;align-items:flex-end;font-size:11.5px;color:#c8d4e3}
.lg-widths span{display:flex;flex-direction:column;align-items:flex-start;gap:4px}
.lg-widths i{display:block;width:36px;background:#8ea2bb;border-radius:4px}
.lg-dot{margin-top:7px;font-size:11.5px;color:#8ea2bb;gap:6px}
.lg-dot .sw.dotted{width:22px}
.city i{width:7px;height:7px;left:-3.5px;top:-3.5px;background:#0b1424;border:1.6px solid #eaf1fa;box-shadow:0 0 7px rgba(140,190,255,.5)}
.city.t2 i{width:5px;height:5px;left:-2.5px;top:-2.5px;border-width:1.2px;border-color:#9fb2c8;box-shadow:none}
.city span{left:7px;font-size:12.5px;font-weight:600;color:#eef4fb;letter-spacing:.8px;text-shadow:0 0 3px #081120,0 0 4px #081120,0 1px 10px #081120}
.city.t2 span{font-size:11px;font-weight:400;color:#9fb2c8;letter-spacing:.4px}
.leaflet-tooltip.rt{background:rgba(9,17,31,.94);border:1px solid rgba(130,160,200,.28);border-radius:10px;padding:8px 12px;line-height:1.6;box-shadow:0 10px 28px rgba(0,0,0,.4)}
.rt .p{color:#8cc6ff;font-weight:700} .rt .n{color:#ffab70;font-weight:700}

/* ===== v3 visual refresh: scatter ===== */
.why{padding:22px 24px 16px}
.sc-legend{display:flex;flex-wrap:wrap;gap:10px 28px;align-items:center;margin:12px 0 6px;font-size:13px;color:var(--ink2)}
.scl-g{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.scl-t{color:var(--ink3);font-size:12.5px}
.scl-bar{display:inline-block;width:110px;height:8px;border-radius:4px;background:linear-gradient(90deg,#d0661e,#b0b6c0 50%,#2f6fb3)}
.scl-ticks{display:inline-flex;gap:30px;font-size:12px;color:var(--ink3)}
.scl-s{display:inline-flex;align-items:center;gap:5px;font-size:12.5px}
.scl-s circle{fill:none;stroke:var(--ink3);stroke-width:1.2}
.scl-s circle.k-solid{fill:var(--ink3);stroke:none}
.scl-s circle.k-hollow{fill:none;stroke:var(--ink3);stroke-width:1.6}
#scatter{position:relative}
#scatter .plotbg{fill:var(--bg);opacity:.55}
#scatter .gx,#scatter .gy{stroke:var(--line);stroke-width:1;opacity:.8}
#scatter .ref{stroke:var(--ink3);stroke-width:1.2;stroke-dasharray:5 4;opacity:.8}
#scatter .reft{font-size:12px;fill:var(--ink2);paint-order:stroke;stroke:var(--panel);stroke-width:4px;stroke-linejoin:round}
#scatter .ax{font-size:12px;fill:var(--ink3);font-variant-numeric:tabular-nums}
#scatter .axt{font-size:12.5px;fill:var(--ink2)}
#scatter .sd{fill:var(--c);fill-opacity:.9;stroke:var(--panel);stroke-width:1.5;stroke-dasharray:none;opacity:1;cursor:pointer;transition:fill-opacity .15s}
#scatter .sd.sc{fill-opacity:.22;stroke:var(--c);stroke-width:1.6;stroke-dasharray:none}
#scatter .sd:hover,#scatter .sd.on{fill-opacity:1;stroke:var(--ink);stroke-width:2.2}
#scatter .sl{font-size:12.5px;font-weight:600;fill:var(--ink);paint-order:stroke;stroke:var(--panel);stroke-width:4px;stroke-linejoin:round;pointer-events:none}
.sc-tip{position:absolute;left:0;top:0;pointer-events:none;opacity:0;transform:translateY(4px);transition:opacity .12s,transform .12s;width:220px;background:var(--panel);border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 28px rgba(16,24,40,.18);padding:9px 12px;font-size:13px;line-height:1.5;z-index:5}
.sc-tip.on{opacity:1;transform:none}
.sc-tip>b{display:block;font-size:14px}
.sc-tip .tr{display:flex;gap:8px;align-items:baseline;margin-top:3px}
.sc-tip .tr span{color:var(--ink3);width:56px;flex:none}
.sc-tip .tr b{font-size:13px;font-variant-numeric:tabular-nums}
.sc-tip .tr em{font-style:normal;font-size:11.5px;color:var(--ink3)}
.sc-tip .p{color:var(--pos)} .sc-tip .n{color:var(--neg)}
.why .fig-src{font-size:12.5px;color:var(--ink3);margin:6px 0 0}
@media (max-width:900px){
  .why{padding:16px 14px 12px}
  .sc-legend{gap:8px 16px}
  .scl-bar{width:80px}
  .legend{min-width:0;padding:8px 10px}
  .legend .lg-sub,.legend .lg-widths,.legend .lg-dot{display:none}
}
.scl-k{font-size:12.5px;font-weight:600}.scl-k.n{color:var(--neg)}.scl-k.p{color:var(--pos)}

/* ===== v4 map: relief terrain ===== */
.map-wrap{background:#0b1a2a}
.map-wrap::after{box-shadow:inset 0 0 90px rgba(3,8,16,.55)}
.relief{filter:grayscale(1) sepia(.55) hue-rotate(178deg) saturate(1.5) brightness(.5) contrast(1.4)}
.map-wrap{background:linear-gradient(180deg,#0d1d33,#0a1628)}
.geo-lb span{position:absolute;transform:translate(-50%,-50%);white-space:nowrap;pointer-events:none;
  font-family:"Songti SC","STSong","Noto Serif SC","Source Han Serif SC","SimSun",serif;letter-spacing:.18em}
.geo-lb.sea span{font-size:15px;color:rgba(150,190,228,.62);font-style:italic}
.geo-lb.land span{font-size:14px;color:rgba(232,220,196,.42);letter-spacing:.32em}
.geo-lb.s span{font-size:12.5px}
.geo-lb.river span{font-size:12px;color:rgba(130,176,220,.7);font-style:italic}
.regions{position:absolute;left:12px;top:12px;z-index:500;display:flex;gap:2px;padding:3px;border-radius:10px;
  background:rgba(8,15,28,.72);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(160,185,215,.2)}
.regions button{border:0;background:transparent;color:#b9c7d8;font:inherit;font-size:13.5px;padding:4px 10px;border-radius:7px;cursor:pointer;line-height:1.4}
.regions button:hover{color:#fff;background:rgba(255,255,255,.07)}
.regions button.on{background:rgba(233,241,250,.92);color:#0b1424;font-weight:700}
.map-hint{top:auto;bottom:12px;left:auto;right:12px;font-size:12.5px;color:#9fb0c4}
.city span{font-size:13px;text-shadow:0 0 2px #050b15,0 0 4px #050b15,0 0 8px #050b15,0 0 12px rgba(5,11,21,.8)}
.city.t2 span{color:#b6c3d3}
@media (max-width:900px){
  .regions{left:8px;right:8px;top:8px;overflow-x:auto;scrollbar-width:none}
  .regions::-webkit-scrollbar{display:none}
  .regions button{flex:none;font-size:13px;padding:4px 9px}
  .map-hud{top:52px;right:8px}
  
  .geo-lb.sea span{font-size:13px}.geo-lb.land span{font-size:12px}
}
/* v4 mobile: map reaches the first screen */
@media (max-width:900px){
  .masthead .brand{gap:10px}
  .brand .logo,.brand img,.brand svg{width:40px;height:40px}
  .brand h1{font-size:22px;margin:0}
  .lede{font-size:13.5px;line-height:1.5}
  .kpis{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;margin-top:8px}
  .kpi{padding:6px 8px;border-radius:10px}
  .k-label{font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .k-val{font-size:15px;white-space:nowrap}
  .map-bar{padding:8px 10px;gap:6px}
  .map-bar .chips{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;width:100%;padding-bottom:1px}
  .map-bar .chips::-webkit-scrollbar{display:none}
  .map-bar .chip{flex:none;font-size:14px;padding:4px 11px}
  .seg.mode button{font-size:14px;padding:5px 10px}
  #map{height:70vh}
}
.city.t3 i{width:4px;height:4px;left:-2px;top:-2px;border-width:1px;border-color:#8fa3ba;box-shadow:none}
.city.t3 span{font-size:11px;font-weight:400;color:#9fb0c4;left:5px}

/* v4 review round 1 */
.city.t2 span{font-size:12.5px;font-weight:600;color:#eef4fb;text-shadow:0 0 2px #050b15,0 0 4px #050b15,0 0 8px #050b15,0 0 12px rgba(5,11,21,.8)}
.city.t2 i{border-color:#eaf1fa}
.city.l span{left:auto;right:7px}
.geo-lb.land span{color:rgba(232,220,196,.58);text-shadow:0 0 6px #0a1628}
.geo-lb.sea span{text-shadow:0 0 6px #0a1628}
.big .nw{white-space:nowrap}
.map-hud .seg.mode{background:rgba(8,15,28,.78);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(130,160,200,.2);border-radius:9px}
.map-hud .seg.mode .seg-l{color:#8ea2bb;font-size:13px}
.map-hud .seg.mode button{background:transparent;color:#c8d4e3;font-size:13.5px;padding:4px 10px;border:0}
.map-hud .seg.mode button.on{background:rgba(233,241,250,.92);color:#0b1424;font-weight:700}
.map-hud .seg.mode button:hover:not(.on){color:#fff}
@media (max-width:900px){
  .legend{min-width:172px}
  .legend .lg-bar{min-width:140px}
  .regions button{padding:4px 7px;font-size:12.5px}
  .regions,.map-bar .chips{-webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);mask-image:linear-gradient(90deg,#000 88%,transparent)}
  .map-hint{white-space:nowrap;max-width:none;font-size:12px}
  .big .v{font-size:28px}
}
.city.t3 span{font-size:12px;font-weight:600;color:#d5dfeb;text-shadow:0 0 2px #050b15,0 0 4px #050b15,0 0 8px #050b15}.city.t3 i{border-color:#c8d4e3}
@media (max-width:900px){.map-hint{top:52px;left:8px;right:auto;bottom:auto}}

/* ===== v5 map: layered terrain + label tiers ===== */
.relief{filter:saturate(.8) brightness(.64) contrast(1.25)}
.map-wrap{background:#0e2a36}
.map-wrap::after{box-shadow:inset 0 0 120px rgba(4,10,16,.55)}
.geo-lb span{position:absolute;transform:translate(-50%,-50%);white-space:nowrap;pointer-events:none;font-style:normal;
  font-family:"Songti SC","STSong","Noto Serif SC","Source Han Serif SC","SimSun",serif;text-shadow:0 0 3px rgba(8,16,24,.9),0 0 8px rgba(8,16,24,.6)}
.geo-lb.country span{font-size:15px;font-weight:700;letter-spacing:.35em;color:rgba(236,226,204,.78)}
.geo-lb.prov span{font-size:13px;letter-spacing:.2em;color:rgba(240,214,160,.62)}
.geo-lb.range span{font-size:12px;letter-spacing:.45em;color:rgba(226,208,178,.66)}
.geo-lb.area span{font-size:13.5px;letter-spacing:.55em;color:rgba(244,232,206,.6)}
.geo-lb.sea span{font-size:15px;letter-spacing:.6em;color:rgba(158,206,226,.72);font-style:italic}
.geo-lb.river span{font-size:12px;letter-spacing:.3em;color:rgba(150,200,236,.82);font-style:italic}
@media (max-width:900px){
  .geo-lb.prov span,.geo-lb.range span{font-size:11px}
  .geo-lb.country span{font-size:13px}
  .geo-lb.area span{font-size:12px;letter-spacing:.4em}
  .geo-lb.sea span{font-size:13px;letter-spacing:.4em}
}