/* Layout: a ledger — a 70ch reading column with figures that break out to 1120px; sticky section index; hairline rules, no cards. */
:root{
  --bg:#F3F5F7; --surface:#FFFFFF; --ink:#16202A; --muted:#5A6A79; --line:#D5DDE5; --grid:rgba(22,32,42,.08); --band:rgba(22,32,42,.045);
  --accent:#1B6B88; --accent-ink:#145369; --accent-soft:#E2EDF2; --ochre:#B4832A; --red:#B2442E; --green:#2C7A58;
  --c1:#1B6B88; --c2:#B4832A; --c3:#5A6A79; --c4:#8A3A6C; --c5:#A3B0BC; --c6:#2C7A58; --c7:#B2442E; --c8:#3E5D9B;
  --ind1:#1B6B88; --ind2:#6E8FB5; --ind3:#9FB4C7; --ind4:#C8D3DC; --ind5:#5F7E96; --ind6:#3E5D9B; --ind8:#8FA68F;
  --display:"Newsreader", Georgia, "Times New Roman", serif;
  --body:"Source Sans 3", "Source Sans Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --maxw:1120px; --prose:70ch;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0F161C; --surface:#161F28; --ink:#E6ECF1; --muted:#98A7B5; --line:#273440; --grid:rgba(230,236,241,.08); --band:rgba(230,236,241,.05);
    --accent:#5EB4D1; --accent-ink:#8ACBE0; --accent-soft:#17303A; --ochre:#D7A64B; --red:#E27B63; --green:#5EC08F;
    --c1:#5EB4D1; --c2:#D7A64B; --c3:#98A7B5; --c4:#C97BB0; --c5:#5F7080; --c6:#5EC08F; --c7:#E27B63; --c8:#8AA3E0;
    --ind1:#5EB4D1; --ind2:#7E9FC8; --ind3:#5F7E96; --ind4:#3E5366; --ind5:#8FA9BE; --ind6:#8AA3E0; --ind8:#7F9B7F;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0F161C; --surface:#161F28; --ink:#E6ECF1; --muted:#98A7B5; --line:#273440; --grid:rgba(230,236,241,.08); --band:rgba(230,236,241,.05);
  --accent:#5EB4D1; --accent-ink:#8ACBE0; --accent-soft:#17303A; --ochre:#D7A64B; --red:#E27B63; --green:#5EC08F;
  --c1:#5EB4D1; --c2:#D7A64B; --c3:#98A7B5; --c4:#C97BB0; --c5:#5F7080; --c6:#5EC08F; --c7:#E27B63; --c8:#8AA3E0;
  --ind1:#5EB4D1; --ind2:#7E9FC8; --ind3:#5F7E96; --ind4:#3E5366; --ind5:#8FA9BE; --ind6:#8AA3E0; --ind8:#7F9B7F;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto} *{transition:none!important;animation:none!important}}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased;font-variant-numeric:tabular-nums}
.page{max-width:var(--maxw);margin:0 auto;padding-inline:20px}
.prose{max-width:var(--prose)}
h1,h2,h3,h4{font-family:var(--display);line-height:1.12;margin:0;text-wrap:balance;font-weight:500;letter-spacing:-.005em}
h2{font-size:clamp(1.8rem,3.6vw,2.5rem)}
h3{font-size:1.28rem;font-weight:500}
h4{font-size:1.05rem;font-family:var(--body);font-weight:600}
p{margin:0 0 1em}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.eyebrow{font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.muted{color:var(--muted)}
.small{font-size:.9rem}
.num{font-variant-numeric:tabular-nums}
strong{font-weight:600}
em{font-style:italic}
hr{border:0;border-top:1px solid var(--line);margin:0}
ul,ol{padding-left:1.2em;margin:0 0 1em}
li{margin-bottom:.35em}
sup{font-size:.7em}

/* masthead */
.mast{border-bottom:1px solid var(--ink);padding-block:14px 10px;display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 18px}
.wordmark{font-family:var(--display);font-weight:500;font-size:1.3rem;letter-spacing:.01em;color:var(--ink);text-decoration:none}
.wordmark span{color:var(--accent)}
.mast .edition{font-family:var(--mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.mast .right{margin-left:auto;font-size:.82rem;color:var(--muted)}
.themebtn{font:inherit;font-size:.78rem;border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:4px;padding:3px 9px;cursor:pointer}
.themebtn:hover{color:var(--ink)}

/* hero */
.hero{padding-block:44px 28px;border-bottom:1px solid var(--line)}
.hero h1{font-size:clamp(2.3rem,5.6vw,3.9rem);font-weight:500;letter-spacing:-.015em;max-width:22ch}
.hero .dek{font-family:var(--display);font-size:clamp(1.15rem,2vw,1.4rem);line-height:1.4;color:var(--ink);max-width:62ch;margin-top:18px;font-weight:400}
.hero .meta{display:flex;flex-wrap:wrap;gap:6px 22px;margin-top:22px;font-size:.84rem;color:var(--muted)}
.hero .meta b{color:var(--ink);font-weight:600}
.depth{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line);margin-top:28px}
.depth div{padding:14px 16px 14px 0;font-size:.9rem;color:var(--muted);min-width:0}
.depth div+div{padding-left:16px;border-left:1px solid var(--line)}
.depth b{display:block;color:var(--ink);font-family:var(--mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:4px}
.depth a{color:var(--ink)}

/* indicator board */
.board{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--ink);border-bottom:1px solid var(--line);margin-top:34px}
.tile{padding:16px 14px 14px 0;border-bottom:1px solid var(--line);min-width:0;position:relative;text-decoration:none;color:inherit;display:flex;flex-direction:column}
.tile:nth-child(4n+2),.tile:nth-child(4n+3),.tile:nth-child(4n+4){padding-left:14px;border-left:1px solid var(--line)}
.tile:nth-last-child(-n+4){border-bottom:0}
.tile:hover .tile-k{color:var(--accent)}
.tile-k{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-family:var(--mono);font-size:.68rem;min-height:2.6em;line-height:1.3}
.tile-v{font-family:var(--display);font-size:1.9rem;font-weight:500;line-height:1.05;margin-top:6px;display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.tile-v small{font-family:var(--body);font-size:.78rem;color:var(--muted);font-weight:400}
.tile-d{font-size:.84rem;color:var(--muted);margin-top:4px;line-height:1.35}
.tile-d b{color:var(--ink);font-weight:600}
.tile-spark{margin-top:auto;padding-top:8px;height:46px}
.tile-spark svg{display:block;width:100%;height:38px;overflow:visible}
.up{color:var(--green)} .down{color:var(--red)}

/* section index */
.toc{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--bg);border-bottom:1px solid var(--line)}
.toc .page{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none;padding-block:8px}
.toc a{flex:none;font-size:.8rem;color:var(--muted);text-decoration:none;padding:5px 10px;border-radius:999px;white-space:nowrap;font-family:var(--mono);letter-spacing:.02em}
.toc a:hover,.toc a.on{color:var(--ink);background:var(--accent-soft)}
.toc .bar{position:absolute;left:0;bottom:-1px;height:2px;background:var(--accent);width:0}

/* sections */
section.sec{padding-block:64px 56px;border-bottom:1px solid var(--line);scroll-margin-top:58px}
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px 48px;align-items:end;margin-bottom:28px}
.sec-head .num{font-family:var(--mono);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:10px;display:block}
.sec-head .stand{font-family:var(--display);font-size:1.15rem;line-height:1.45;color:var(--ink)}
.finding{border-left:3px solid var(--accent);padding:4px 0 4px 16px;margin:28px 0 20px;font-size:1.02rem}
.finding b{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);display:block;margin-bottom:4px}
.twocol{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px 40px;align-items:start}
.twocol>*{min-width:0}
.means{margin-top:28px;padding-top:18px;border-top:1px solid var(--ink)}
.means b{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:8px}

/* figures */
.fig{margin:34px 0 10px;padding-top:16px;border-top:1px solid var(--ink)}
.fig.sub{border-top:1px solid var(--line);margin-top:22px}
.fig-head{display:flex;flex-wrap:wrap;gap:8px 24px;align-items:flex-start;justify-content:space-between}
.fig-head h3{max-width:60ch}
.fig-sub{font-size:.9rem;color:var(--muted);margin-top:4px;max-width:70ch}
.fig-ctl{display:flex;flex-wrap:wrap;gap:10px 14px;align-items:center;margin:12px 0 6px}
.fig-ctl>div,.cmp-ctl>div{min-width:0;max-width:100%}
.fig-ctl>div:has(select){flex:0 1 auto;display:inline-flex;align-items:center;gap:8px;max-width:100%}
.seg{display:inline-flex;flex-wrap:wrap;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:var(--surface)}
.seg button{font:inherit;font-size:.8rem;border:0;background:transparent;color:var(--muted);padding:5px 11px;cursor:pointer;border-right:1px solid var(--line)}
.seg button:last-child{border-right:0}
.seg button[aria-pressed="true"]{background:var(--accent-soft);color:var(--ink);font-weight:600}
.seg button:hover{color:var(--ink)}
.ctl-label{font-family:var(--mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
select.sel{font:inherit;font-size:.84rem;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:6px;padding:5px 28px 5px 10px;width:auto;min-width:14ch;max-width:100%;text-overflow:ellipsis;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' fill='none' stroke='%235A6A79' stroke-width='1.6'/></svg>");background-repeat:no-repeat;background-position:right 10px center}
select.sel:hover{border-color:var(--muted)}
.chk{display:inline-flex;align-items:center;gap:6px;font-size:.84rem;color:var(--ink);cursor:pointer}
.chk input{accent-color:var(--accent);width:15px;height:15px;margin:0}
.fig-foot{display:flex;flex-wrap:wrap;gap:6px 18px;align-items:baseline;justify-content:space-between;margin-top:8px}
.src{font-size:.8rem;color:var(--muted);line-height:1.45;max-width:85ch}
.src a{color:var(--muted);text-decoration:none;border-bottom:1px solid var(--line)}
.src a:hover{color:var(--accent);border-color:var(--accent)}
.fig-foot .tools{display:flex;gap:12px;flex:none}
.linkbtn{font:inherit;font-size:.78rem;border:0;background:none;color:var(--accent);cursor:pointer;padding:0;text-decoration:underline;text-underline-offset:2px}
.why{margin-top:14px;max-width:70ch;font-size:.98rem}
.why b{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:4px}
.data-panel{margin-top:10px;border:1px solid var(--line);border-radius:6px;background:var(--surface);padding:10px 12px;max-height:340px;overflow:auto}
.data-panel[hidden]{display:none}
.note-panel{margin-top:10px;border-left:2px solid var(--line);padding:4px 12px;font-size:.88rem;color:var(--muted)}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 36px}
.grid2>*{min-width:0}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px 28px}
.grid3>*{min-width:0}
.mini h4{margin:12px 0 2px;font-size:.98rem}
.mini .src{margin-top:4px}

/* engine */
.ye-chart{position:relative;width:100%}
.ye-panels>.ye-panel+.ye-panel{margin-top:10px}
.ye-ptitle{font-family:var(--mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:8px 0 2px}
.prog{margin:14px 0 4px}
.prog-track{position:relative;height:26px;background:var(--band);border:1px solid var(--line);border-radius:4px;overflow:hidden}
.prog-ends{display:flex;justify-content:space-between;font-family:var(--mono);font-size:.68rem;color:var(--muted);margin-top:4px}
.prog-fill{position:absolute;left:0;top:0;bottom:0;border-radius:4px 0 0 4px}
.prog-fill.appr{background:var(--accent-soft);border-right:1px solid var(--accent)}
.prog-fill.done{background:var(--accent)}
.prog-legend{display:flex;flex-wrap:wrap;gap:6px 22px;margin-top:10px;font-size:.86rem;color:var(--muted)}
.prog-legend i{display:inline-block;width:12px;height:12px;border-radius:2px;margin-right:7px;vertical-align:-2px}
.prog-legend i.done{background:var(--accent)}
.prog-legend i.appr{background:var(--accent-soft);border:1px solid var(--accent)}
.prog-legend i.rest{background:var(--band)}
.ye-wrap{position:relative}
.ye-svg{width:100%}
.ye-svg svg{display:block;width:100%;height:auto;font-family:var(--body)}
.ye-legend{display:flex;flex-wrap:wrap;gap:4px 14px;margin:6px 0 4px}
.ye-leg{font:inherit;font-size:.82rem;color:var(--ink);background:none;border:0;padding:2px 0;display:inline-flex;align-items:center;gap:6px;cursor:pointer;text-align:left;white-space:normal}
.ye-leg[disabled]{cursor:default}
.ye-leg.off{color:var(--muted);text-decoration:line-through}
.ye-leg .ye-sw{display:inline-block;width:18px;height:10px;flex:none;overflow:visible}
.ye-key{display:flex;flex-wrap:wrap;gap:3px 16px;margin:6px 0 2px;font-size:.78rem;color:var(--muted);line-height:1.35}
.ye-key span{white-space:nowrap}
.ye-ckey{display:flex;flex-wrap:wrap;gap:4px 16px;margin:4px 0 6px;font-size:.8rem;color:var(--muted)}
.ye-ckey i{display:inline-block;width:12px;height:10px;border-radius:2px;margin-right:6px;vertical-align:-1px}
.ye-tip{position:absolute;z-index:5;pointer-events:none;background:var(--ink);color:var(--bg);padding:8px 10px;border-radius:6px;font-size:.8rem;line-height:1.45;max-width:260px;box-shadow:0 4px 14px rgba(0,0,0,.18)}
.ye-tip b{display:block;margin-bottom:2px;font-weight:600}
.ye-tip .ye-sw{display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:6px;vertical-align:middle}
.ye-tip i{opacity:.7;font-style:italic;margin-left:4px}
.ye-table{width:100%;border-collapse:collapse;font-size:.82rem}
.ye-table th{text-align:left;font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:500;padding:4px 8px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--surface)}
.ye-table td{padding:3px 8px;border-bottom:1px solid var(--grid)}
.ye-table td.num{text-align:right;font-variant-numeric:tabular-nums}
.ye-bar{transition:opacity .15s}

/* tables */
table.tbl{width:100%;border-collapse:collapse;font-size:.9rem}
.tbl th{text-align:left;font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:500;padding:8px 10px;border-bottom:1px solid var(--ink)}
.tbl td{padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl td.nowrap{white-space:nowrap}
.tbl td.r,.tbl th.r{text-align:right}
.tbl tr.hl td{background:var(--accent-soft)}
.tscroll{overflow-x:auto}

/* system diagram */
.diagram{margin-top:20px}
.diagram svg{width:100%;height:auto;display:block;font-family:var(--body)}
.dnode{cursor:pointer}
.dnode rect{fill:var(--surface);stroke:var(--line);stroke-width:1.2;rx:4}
.dnode text{fill:var(--ink);font-size:12.5px}
.dnode.on rect,.dnode:hover rect{stroke:var(--accent);stroke-width:2}
.dnode.ext rect{fill:var(--accent-soft)}
.dedge{fill:none;stroke:var(--muted);stroke-width:1.5;opacity:.75;marker-end:url(#arr)}
.dedge.on{stroke:var(--accent);opacity:1;stroke-width:2.4;marker-end:url(#arr-on)}
.dedge.dim{opacity:.18}
.dlabel{fill:var(--muted);font-size:10.5px;font-family:var(--mono)}
.dkey{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:8px;font-size:.8rem;color:var(--muted)}
.dkey i{display:inline-block;width:14px;height:10px;border-radius:2px;border:1px solid var(--line);margin-right:6px;vertical-align:-1px;background:var(--surface)}
.dkey i.ext{background:var(--accent-soft)}
.sysmap-list{display:none;flex-wrap:wrap;gap:6px;margin-top:12px}
.sysmap-list button{font:inherit;font-size:.82rem;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:5px 11px;cursor:pointer}
.sysmap-list button.ext{background:var(--accent-soft)}
.sysmap-list button[aria-pressed="true"]{border-color:var(--accent);color:var(--accent)}
.dexplain{margin-top:14px;border-top:1px solid var(--line);padding-top:12px;min-height:84px;font-size:.98rem}
.dexplain b{font-family:var(--display);font-size:1.1rem;font-weight:500;display:block;margin-bottom:4px}
.dexplain .ev{font-size:.88rem;color:var(--muted)}

/* scenario explorer */
.scn{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:28px 44px;margin-top:18px}
.scn>*{min-width:0}
.slider{margin-bottom:18px}
.slider .row{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.slider label{font-weight:600;font-size:.95rem}
.slider output{font-family:var(--display);font-size:1.5rem;font-weight:500;font-variant-numeric:tabular-nums}
.slider input[type=range]{width:100%;accent-color:var(--accent);margin:8px 0 2px;height:22px}
.slider .ticks{display:flex;justify-content:space-between;font-family:var(--mono);font-size:.68rem;color:var(--muted)}
.slider .base{font-size:.8rem;color:var(--muted)}
.presets{display:flex;flex-wrap:wrap;gap:8px;margin:4px 0 14px}
.presets button{font:inherit;font-size:.8rem;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:5px 12px;cursor:pointer}
.presets button:hover,.presets button[aria-pressed="true"]{border-color:var(--accent);color:var(--accent)}
.outs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border-top:1px solid var(--ink)}
.out{padding:12px 12px 12px 0;border-bottom:1px solid var(--line);min-width:0}
.out:nth-child(even){padding-left:12px;border-left:1px solid var(--line)}
.out .k{font-family:var(--mono);font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.out .v{font-family:var(--display);font-size:1.6rem;font-weight:500;line-height:1.1;margin-top:4px;font-variant-numeric:tabular-nums}
.out .b{font-size:.8rem;color:var(--muted);margin-top:2px}
.out .d{font-size:.82rem;margin-top:2px}
.scn-note{font-size:.86rem;color:var(--muted);margin-top:12px}
details.method{margin-top:14px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}
details.method summary{cursor:pointer;padding:10px 14px;font-weight:600;font-size:.92rem}
details.method .in{padding:0 14px 12px;font-size:.9rem}
details.method table{font-size:.84rem}

/* scenarios */
.scen{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--ink);margin-top:24px}
.scen>div{padding:16px 16px 16px 0;min-width:0;border-bottom:1px solid var(--line)}
.scen>div+div{padding-left:16px;border-left:1px solid var(--line)}
.scen .tag{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase}
.scen h3{margin:6px 0 10px}
.scen ul{font-size:.92rem;padding-left:1.1em}
.scen .up .tag{color:var(--green)} .scen .dn .tag{color:var(--red)} .scen .base .tag{color:var(--accent)}

/* watchlist */
.watch{border-top:1px solid var(--ink);margin-top:20px}
.watch .row{display:grid;grid-template-columns:1.3fr .8fr 1.6fr .9fr;gap:14px;padding:11px 0;border-bottom:1px solid var(--line);font-size:.92rem;align-items:start}
.watch .row.h{font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:500}
.watch .row>div{min-width:0}
.watch .v{font-weight:600}
.watch .d{font-family:var(--mono);font-size:.8rem;color:var(--muted)}

/* comparison module */
.cmp-ctl{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;margin:14px 0}

/* methodology */
.geo{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:24px 40px;align-items:center}
.geo svg{width:100%;height:auto;display:block}
.geo .lbl{font-size:.9rem}
.deflist{display:grid;grid-template-columns:max-content 1fr;gap:6px 16px;font-size:.92rem}
.deflist dt{font-weight:600}
.deflist dd{margin:0;color:var(--muted)}
.srclist{columns:2;column-gap:36px;font-size:.86rem}
.srclist li{break-inside:avoid;margin-bottom:6px;overflow-wrap:anywhere}
footer.colophon{padding-block:36px 64px;font-size:.88rem;color:var(--muted)}
footer .wordmark{font-size:1.1rem}
footer .credit{margin-top:4px}
footer .credit strong{color:var(--ink);font-weight:600}
.about-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px 40px;margin-bottom:32px}
.about-grid>*{min-width:0}
.about-grid h4{color:var(--ink);font-size:.95rem;margin-bottom:8px}
.about-grid p{margin:0 0 .7em;max-width:46ch}
.about-grid .links a,.about-grid #cite-text{overflow-wrap:anywhere}
.about-grid #cite-text{color:var(--ink)}
.edl{display:grid;grid-template-columns:max-content 1fr;gap:3px 14px;margin:0 0 .8em}
.edl dt{color:var(--muted)}
.edl dd{margin:0;color:var(--ink);font-weight:600}

@media (max-width:980px){
  .board{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tile:nth-child(4n+2),.tile:nth-child(4n+3),.tile:nth-child(4n+4){padding-left:0;border-left:0}
  .tile:nth-child(2n){padding-left:14px;border-left:1px solid var(--line)}
  .tile:nth-last-child(-n+4){border-bottom:1px solid var(--line)}
  .tile:nth-last-child(-n+2){border-bottom:0}
  .grid3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:820px){
  .sec-head,.twocol,.scn,.geo{grid-template-columns:1fr}
  .scen{grid-template-columns:1fr}
  .scen>div+div{padding-left:0;border-left:0}
  .depth{grid-template-columns:1fr}
  .depth div+div{padding-left:0;border-left:0;border-top:1px solid var(--line)}
  .watch .row{grid-template-columns:1fr 1fr}
  .watch .row.h{display:none}
  .srclist{columns:1}
  section.sec{padding-block:48px 40px}
  .grid2{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr;gap:22px}
}
@media (max-width:640px){
  .watch .row{grid-template-columns:1fr;gap:4px;padding:14px 0}
  .watch .row>div:nth-child(2)::before{content:'Latest: ';font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
  .watch .row>div:nth-child(3)::before{content:'Watch for: ';font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
  .watch .d::before{content:'Next: ';font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
  #change-table table,#change-table thead,#change-table tbody,#change-table tr,#change-table td{display:block}
  #change-table thead{display:none}
  #change-table tr{border-bottom:1px solid var(--line);padding:10px 0}
  #change-table td{border:0;padding:3px 0}
  #change-table td::before{content:attr(data-h);display:block;font-family:var(--mono);font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
  #change-table td:first-child::before{display:none}
  #change-table td:first-child{font-size:1.02rem}
  .diagram svg{display:none}
  .sysmap-list{display:flex}
}
@media (max-width:480px){
  .seg:has(> button:nth-child(3)){display:flex;flex-direction:column;width:100%}
  .seg:has(> button:nth-child(3)) button{border-right:0;border-bottom:1px solid var(--line);text-align:left}
  .seg:has(> button:nth-child(3)) button:last-child{border-bottom:0}
}
@media (max-width:560px){
  body{font-size:16px}
  .board{grid-template-columns:1fr}
  .tile:nth-child(2n){padding-left:0;border-left:0}
  .tile{border-bottom:1px solid var(--line)!important}
  .tile:last-child{border-bottom:0!important}
  .grid3{grid-template-columns:1fr}
  .outs{grid-template-columns:1fr}
  .out:nth-child(even){padding-left:0;border-left:0}
  .deflist{grid-template-columns:1fr}
  .hero{padding-block:30px 22px}
}