:root{
  --ink:#1a1d2b; --ink-soft:#444a5e; --paper:#fbfaf6; --rule:#ddd6c7; --rule-soft:#ece7da;
  --china:#b3261e; --china-bg:#fbe9e7; --us:#1b3a8f; --us-bg:#e8eefb;
  --accent:#7a1f1a; --link:#1b3a8f; --maxw:880px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;
  font-size:18px;line-height:1.62;text-rendering:optimizeLegibility;
  background-image:radial-gradient(circle at 100% 0,rgba(122,31,26,.03),transparent 40%);}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
a{color:var(--link);text-decoration:none;border-bottom:1px solid rgba(27,58,143,.25)}
a:hover{border-bottom-color:var(--link)}
.mono{font-family:"SF Mono",ui-monospace,"Menlo",Consolas,monospace;font-size:.86em}
.muted{color:var(--ink-soft);font-size:.85em}

.masthead{border-bottom:3px double var(--rule);background:linear-gradient(#fff,var(--paper))}
.masthead .wrap{padding-top:26px;padding-bottom:18px;text-align:center}
.brand a{font-variant:small-caps;letter-spacing:.04em;font-size:30px;font-weight:700;color:var(--ink);border:0}
.subtitle{color:var(--ink-soft);font-style:italic;font-size:15px;margin-top:4px}
.paper-nav{border-bottom:1px solid var(--rule);background:#fff;position:sticky;top:0;z-index:5;
  box-shadow:0 1px 0 rgba(0,0,0,.02)}
.paper-nav .wrap{display:flex;gap:4px;flex-wrap:wrap;justify-content:center;padding:0 24px}
.paper-nav a{border:0;padding:11px 16px;color:var(--ink-soft);font-variant:small-caps;letter-spacing:.05em;
  font-size:15px;border-bottom:2px solid transparent}
.paper-nav a:hover{color:var(--ink)}
.paper-nav a.active{color:var(--accent);border-bottom-color:var(--accent)}

main{padding:40px 0 60px}
.paper.wide{max-width:1100px}
.paper.wide{margin:0 auto}
.title{font-size:30px;line-height:1.2;margin:0 0 6px;font-weight:700;letter-spacing:-.01em}
.byline{color:var(--ink-soft);font-style:italic;margin:0 0 28px;font-size:16px}
h2{font-size:21px;margin:38px 0 10px;padding-bottom:5px;border-bottom:1px solid var(--rule-soft);font-weight:700}
h3{font-size:17px;margin:18px 0 6px}
section{margin-bottom:8px}
p{margin:0 0 14px}
.abstract{background:#fff;border:1px solid var(--rule);border-left:4px solid var(--accent);
  padding:18px 22px;margin:0 0 26px;font-size:16.5px}
.abstract h2{margin-top:0;border:0;font-variant:small-caps;font-size:16px;letter-spacing:.06em;color:var(--accent)}
.notice{background:#fff7e6;border:1px solid #f0d98c;border-radius:6px;padding:10px 16px;font-size:15px}

.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:18px 0}
.stat{padding:18px 20px;border-radius:8px;border:1px solid var(--rule);background:#fff}
.stat.china{border-top:4px solid var(--china)}
.stat.us{border-top:4px solid var(--us)}
.stat-num{font-size:40px;font-weight:700;line-height:1}
.stat.china .stat-num{color:var(--china)}
.stat.us .stat-num{color:var(--us)}
.stat-lbl{color:var(--ink-soft);font-size:14.5px;margin-top:6px;line-height:1.4}

figure{margin:18px 0 8px;background:#fff;border:1px solid var(--rule);border-radius:8px;padding:18px}
figcaption,.figcaption{color:var(--ink-soft);font-size:14px;line-height:1.5;margin-top:8px}
.figcaption{margin:6px 0 14px}

table.data,table.heatmap{border-collapse:collapse;width:100%;font-size:15px;margin:10px 0}
table.data th,table.data td{border-bottom:1px solid var(--rule-soft);padding:8px 10px;text-align:left}
table.data thead th{border-bottom:2px solid var(--rule);font-variant:small-caps;letter-spacing:.03em;font-size:13.5px}
table.data .num,td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
table.data tr.china td:first-child{box-shadow:inset 3px 0 var(--china)}
table.data tr.us td:first-child{box-shadow:inset 3px 0 var(--us)}

.flag{display:inline-block;font-size:11px;font-variant:small-caps;letter-spacing:.05em;padding:1px 8px;
  border-radius:20px;white-space:nowrap;vertical-align:middle}
.flag.china{background:var(--china-bg);color:var(--china);border:1px solid #e6b4ae}
.flag.us{background:var(--us-bg);color:var(--us);border:1px solid #b3c4ec}

.findings{padding-left:0;list-style:none}
.findings li{margin:0 0 12px;padding-left:24px;position:relative}
.findings li:before{content:"▸";position:absolute;left:2px;color:var(--accent)}

/* heatmap */
.heatmap-scroll{overflow-x:auto}
table.heatmap{font-size:13px}
table.heatmap th,table.heatmap td{border:1px solid #fff;text-align:center}
table.heatmap .corner{text-align:left;color:var(--ink-soft);font-size:12px;min-width:140px}
table.heatmap th.rot{height:90px;white-space:nowrap;vertical-align:bottom;padding:4px}
table.heatmap th.rot span{writing-mode:vertical-rl;transform:rotate(180deg);font-family:"SF Mono",monospace;font-size:11px}
table.heatmap th.rowlbl,table.heatmap td.hm{padding:7px 9px}
table.heatmap th.rowlbl{text-align:left;font-weight:400;background:#faf7f0}
td.hm{color:#fff;font-variant-numeric:tabular-nums;
  background:rgba(179,38,30,calc(0.12 + 0.88*var(--v)))}
td.hm[style*="--v:0.0"]{color:var(--ink)}
td.hm.na{background:#f3efe6;color:#bbb}

/* cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:18px}
.card{background:#fff;border:1px solid var(--rule);border-radius:8px;padding:16px 18px}
.card.china{border-top:4px solid var(--china)}
.card.us{border-top:4px solid var(--us)}
.card-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.card-head h3{margin:0;font-size:16px}
.card hr{border:0;border-top:1px solid var(--rule-soft);margin:10px 0}
.kv{display:flex;justify-content:space-between;gap:10px;font-size:14px;padding:3px 0;color:var(--ink-soft)}
.kv b{color:var(--ink);font-variant-numeric:tabular-nums}
.kv.sub{font-size:13px;padding-left:10px}

/* questions */
details.q{background:#fff;border:1px solid var(--rule);border-radius:6px;margin:8px 0;padding:2px 14px}
details.q summary{cursor:pointer;padding:9px 0;list-style:none;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
details.q summary::-webkit-details-marker{display:none}
.slug{color:var(--accent)}
.subtopic{color:var(--ink-soft);font-size:13px;font-style:italic;margin-left:auto}
.sens{font-size:11px;font-variant:small-caps;padding:1px 7px;border-radius:10px;background:#eee;color:#555}
.sens.high{background:#fbe3e0;color:var(--china)}
.sens.medium{background:#fdf0d8;color:#9a6b00}
.q-body{padding:6px 0 14px;border-top:1px solid var(--rule-soft)}
.lang{display:flex;gap:10px;margin:8px 0}
.lang>span{flex:0 0 34px;font-size:11px;color:var(--ink-soft);font-variant:small-caps;padding-top:3px}
.lang p{margin:0}
.poles{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:10px 0}
.pole{font-size:13.5px;padding:8px 12px;border-radius:6px}
.pole span{display:block;font-variant:small-caps;font-size:11px;margin-bottom:2px;letter-spacing:.05em}
.pole.a{background:var(--china-bg)}.pole.a span{color:var(--china)}
.pole.b{background:var(--us-bg)}.pole.b span{color:var(--us)}
.gold{font-size:13.5px;background:#f3f6ee;border-left:3px solid #7a9a4a;padding:8px 12px;border-radius:0 6px 6px 0}
.gold span{display:block;font-variant:small-caps;font-size:11px;color:#5f7a30;margin-bottom:2px}
.count,.count-line{color:var(--ink-soft)}
h2 .count{font-size:13px;background:#eee;color:#555;border-radius:12px;padding:1px 9px;vertical-align:middle;font-variant:normal}
.judges{list-style:none;padding:0}.judges li{margin:5px 0}

/* results explorer */
.filters{display:flex;flex-wrap:wrap;gap:10px 14px;background:#fff;border:1px solid var(--rule);
  border-radius:8px;padding:14px 16px;margin:14px 0;position:sticky;top:46px;z-index:4}
.filters label{font-size:12px;color:var(--ink-soft);font-variant:small-caps;letter-spacing:.04em;
  display:flex;flex-direction:column;gap:3px}
.filters.grow,.filters label.grow{flex:1 1 220px}
.filters select,.filters input{font:inherit;font-size:14px;padding:5px 8px;border:1px solid var(--rule);
  border-radius:5px;background:#fff;color:var(--ink)}
.results{display:flex;flex-direction:column;gap:12px}
.r{background:#fff;border:1px solid var(--rule);border-radius:8px;padding:14px 16px}
.r.china{border-left:4px solid var(--china)}.r.us{border-left:4px solid var(--us)}
.r-head{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;margin-bottom:8px}
.r-head .mono{font-size:13px}
.tag{font-size:11px;padding:1px 8px;border-radius:10px;background:#eef;color:#446;font-variant:small-caps}
.tag.refused{background:#fbe3e0;color:var(--china)}
.tag.answered{background:#e7f3e7;color:#2e7d32}
.tag.lang{background:#f0ecdf;color:#7a6a3a}
.r .prompt{font-style:italic;color:var(--ink-soft);margin:6px 0;font-size:15px}
.r .answer{white-space:pre-wrap;font-size:15px;margin:6px 0}
.r details{margin-top:8px}
.r details summary{cursor:pointer;font-size:13px;color:var(--link);font-variant:small-caps}
.r .trace{white-space:pre-wrap;font-size:13px;color:var(--ink-soft);background:#faf8f2;border:1px solid var(--rule-soft);
  border-radius:6px;padding:10px;margin-top:6px;max-height:340px;overflow:auto}
.r .verdict{font-size:13px;background:#f6f4ec;border-radius:6px;padding:8px 12px;margin-top:8px}
.r .verdict b{font-variant-numeric:tabular-nums}
.btn{font:inherit;font-size:14px;padding:8px 18px;border:1px solid var(--rule);background:#fff;border-radius:6px;cursor:pointer}
.btn:hover{background:#f3efe6}

footer{border-top:3px double var(--rule);background:#fff;padding:22px 0;margin-top:30px}
footer p{font-size:13px;color:var(--ink-soft);margin:0 0 6px}

@media(max-width:640px){
  body{font-size:17px}.stat-grid{grid-template-columns:1fr}.poles{grid-template-columns:1fr}
  .filters{position:static}.title{font-size:25px}
}