:root{
  --bg:#F7F6F2; --ink:#1A1A1A; --china:#B23A2E; --us:#2A4D69;
  --muted:#B0ABA2; --grid:#D8D4CC; --sub:#555555; --src:#777777;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:Inter,"Source Sans 3",system-ui,Arial,sans-serif;line-height:1.45;}
.wrap{max-width:1240px;margin:0 auto;padding:22px 26px 60px;}
h1{font-family:"Source Serif 4",Georgia,"Times New Roman",serif;font-weight:700;
  font-size:30px;margin:0 0 4px;letter-spacing:-.2px;}
.subtitle{color:var(--sub);font-size:15px;margin:0 0 8px;max-width:880px;}
.instruction{font-size:13.5px;color:var(--ink);background:#fff;border:1px solid var(--grid);
  border-left:3px solid var(--us);padding:8px 12px;border-radius:4px;max-width:880px;margin:8px 0 0;}
.controls{display:flex;flex-wrap:wrap;gap:18px 26px;align-items:flex-start;
  margin:18px 0 14px;padding:14px 16px;background:#fff;border:1px solid var(--grid);border-radius:6px;}
.checks{margin-top:4px;}
.cgroup{display:flex;flex-direction:column;gap:6px;}
.clabel{font-size:11px;text-transform:uppercase;letter-spacing:.7px;color:var(--src);font-weight:600;}
.checks{display:flex;gap:14px;}
.chk{display:flex;align-items:center;gap:6px;font-size:14px;cursor:pointer;}
.chk input{width:17px;height:17px;cursor:pointer;accent-color:var(--ink);}
.chk.china input{accent-color:var(--china);} .chk.us input{accent-color:var(--us);}
.seg{display:inline-flex;border:1px solid var(--grid);border-radius:6px;overflow:hidden;background:#fff;}
.seg label{position:relative;}
.seg input{position:absolute;opacity:0;pointer-events:none;}
.seg .opt{display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:6px 12px;font-size:13.5px;cursor:pointer;border-right:1px solid var(--grid);min-width:64px;}
.seg label:last-child .opt{border-right:none;}
.seg .opt small{font-size:10.5px;color:var(--src);margin-top:1px;}
.seg input:checked + .opt{background:var(--ink);color:#fff;}
.seg input:checked + .opt small{color:#d9d9d9;}
.seg input:focus-visible + .opt{outline:2px solid var(--us);outline-offset:-2px;}
.tabs{display:inline-flex;gap:4px;}
.tab{padding:7px 16px;font-size:14px;border:1px solid var(--grid);background:#fff;border-radius:6px;
  cursor:pointer;color:var(--ink);}
.tab[aria-selected="true"]{background:var(--ink);color:#fff;border-color:var(--ink);}
.tab:focus-visible{outline:2px solid var(--us);outline-offset:2px;}
.btn{padding:7px 14px;font-size:13.5px;border:1px solid var(--grid);background:#fff;border-radius:6px;
  cursor:pointer;color:var(--ink);}
.btn:hover{background:#f0eee9;} .btn:focus-visible{outline:2px solid var(--us);outline-offset:2px;}
.main-grid{display:grid;grid-template-columns:1fr 280px;gap:20px;align-items:start;}
.chart-card{background:#fff;border:1px solid var(--grid);border-radius:6px;padding:8px 8px 4px;}
.chart{width:100%;height:430px;}
.panel{background:#fff;border:1px solid var(--grid);border-radius:6px;padding:14px 16px;font-size:13px;}
.panel h3{font-family:"Source Serif 4",Georgia,serif;font-size:15px;margin:0 0 6px;}
.panel p{margin:0 0 10px;color:var(--sub);}
.panel .finding{color:var(--ink);border-top:1px solid var(--grid);padding-top:10px;font-size:13px;}
.kv{display:flex;justify-content:space-between;font-size:12.5px;margin:3px 0;color:var(--sub);}
.kv b{color:var(--ink);font-weight:600;}
.keynums{margin:6px 0 12px;display:flex;flex-direction:column;gap:6px;}
.kn-head{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--src);font-weight:600;margin:2px 0 1px;}
.knrow{display:grid;grid-template-columns:auto 1fr;align-items:start;gap:9px;
  padding:8px 10px;background:#faf9f6;border:1px solid var(--grid);border-radius:5px;}
.kndot{width:9px;height:9px;border-radius:50%;margin-top:5px;}
.kncol{display:flex;flex-direction:column;gap:1px;}
.knlab{color:var(--sub);font-size:12px;}
.knval{font-family:"Source Serif 4",Georgia,serif;font-weight:700;font-size:16px;color:var(--ink);}
.knunit{font-size:11.5px;color:var(--src);font-family:Inter,sans-serif;font-weight:400;}
.knrange{color:var(--src);font-size:11.5px;}

/* ---- interactive tipping-point explainer ---- */
.tip-detail-card{margin-top:18px;background:#fff;border:1px solid var(--grid);border-radius:6px;padding:14px 16px;}
.tip-detail-card h3{font-family:"Source Serif 4",Georgia,serif;font-size:16px;margin:0 0 4px;}
.tip-relevance{margin-top:16px;border-top:1px solid var(--grid);padding-top:12px;}
.tip-relevance h4{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--src);font-weight:600;margin:0 0 5px;}
.tip-relevance p{font-size:13px;color:var(--ink);margin:0;line-height:1.45;max-width:900px;}
.tip-controls{display:flex;flex-wrap:wrap;gap:16px 26px;align-items:flex-end;margin-bottom:12px;}
.tip-field{display:flex;flex-direction:column;gap:5px;}
.tip-field select{font-family:inherit;font-size:13.5px;padding:6px 10px;border:1px solid var(--grid);
  border-radius:6px;background:#fff;color:var(--ink);min-width:240px;cursor:pointer;}
.tip-field select:focus-visible{outline:2px solid var(--us);outline-offset:1px;}
.tip-field input[type=range]{width:220px;cursor:pointer;accent-color:var(--china);}
.tip-field output{color:var(--ink);font-weight:600;}
.tip-scennote{font-size:11.5px;color:var(--src);max-width:300px;line-height:1.35;}
.tip-detail-body{display:grid;grid-template-columns:1fr 1.1fr;gap:20px;align-items:start;}
.tip-status{display:inline-block;font-weight:600;font-size:14px;padding:6px 12px;border-radius:5px;
  color:#fff;background:var(--us);}
.tip-meter{height:12px;background:#eceae5;border-radius:6px;overflow:hidden;margin:12px 0 4px;}
.tip-meter-fill{height:100%;width:0;background:var(--us);transition:width .25s ease,background .25s ease;}
.tip-meter-cap{font-size:11px;color:var(--src);line-height:1.35;}
.tip-consequence{font-size:13px;color:var(--ink);margin:12px 0 4px;line-height:1.4;}
.tip-consequence b{font-weight:600;}
.src{font-size:11px;color:var(--src);margin:0;}
.tip-ruler{width:100%;height:150px;}
@media(max-width:880px){.tip-detail-body{grid-template-columns:1fr;}}
.strip-card{margin-top:18px;background:#fff;border:1px solid var(--grid);border-radius:6px;padding:10px 14px 4px;}
.strip-card h3{font-family:"Source Serif 4",Georgia,serif;font-size:15px;margin:2px 0 0;}
.strip-card .note{font-size:11.5px;color:var(--src);margin:2px 0 6px;}
.tip-chart{width:100%;height:230px;}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.card{background:#fff;border:1px solid var(--grid);border-radius:6px;padding:12px 14px;}
.card .lab{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--src);}
.card .val{font-family:"Source Serif 4",Georgia,serif;font-size:23px;font-weight:700;margin-top:3px;}
.card .un{font-size:12px;color:var(--src);}
.abate{margin-top:18px;background:#fff;border:1px solid var(--grid);border-radius:6px;padding:14px 16px;}
.abate h3{font-family:"Source Serif 4",Georgia,serif;font-size:15px;margin:0 0 2px;}
.abate .note{font-size:11.5px;color:var(--src);margin:0 0 10px;}
.abate-scenario{background:#faf9f6;border:1px solid var(--grid);border-radius:6px;padding:11px 13px;margin-bottom:12px;}
.abate-scenario-text{font-size:13px;color:var(--ink);margin:0 0 8px;line-height:1.45;}
.abate-bar{height:10px;background:#eceae5;border-radius:5px;overflow:hidden;margin:0 0 10px;}
.abate-bar-fill{height:100%;width:0;background:var(--us);transition:width .25s ease,background .25s ease;}
.abate-suggest{font-size:12.5px;}
.opts{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;}
.opt-row{border:1px solid var(--grid);border-radius:5px;padding:9px 11px;font-size:12.5px;cursor:pointer;}
.opt-row.sel{border-color:var(--ink);background:#faf9f6;}
.opt-row label{display:flex;gap:7px;align-items:flex-start;cursor:pointer;}
.opt-row input{margin-top:2px;accent-color:var(--ink);}
.opt-row .o-name{font-weight:600;} .opt-row .o-meta{color:var(--src);font-size:11.5px;margin-top:3px;}
footer{margin-top:26px;border-top:1px solid var(--grid);padding-top:14px;font-size:11.5px;color:var(--src);}
footer h4{font-size:12px;color:var(--sub);margin:0 0 4px;text-transform:uppercase;letter-spacing:.6px;}
footer p{margin:0 0 8px;max-width:1000px;}
.hidden{display:none!important;}
@media(max-width:880px){.main-grid{grid-template-columns:1fr;}.opts{grid-template-columns:1fr;}.cards{grid-template-columns:1fr 1fr;}}