/* Working Set — tlwinset.com
   One stylesheet. No framework, no build step, no JavaScript.
   Colour is a verdict, never a mood. Type states epistemic status. */

:root{
  color-scheme: light dark;
  --page:    #FBFBFC;
  --panel:  #F0F2F5;
  --body:      #12151A;
  --meta:    #4C525B;
  --hair:     #D5DAE0;
  --signal:   #0B4EA7;
  --wrong:    #A0182A;
  --true:     #1B5D3A;
  --depends:  #5B3A9E;

  --col: 68ch;
  --step: 1.6rem;
  --face: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --code: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
@media (prefers-color-scheme: dark){
  :root{
    --page:#0E1116; --panel:#171B22; --body:#E4E8EE; --meta:#9DA6B1;
    --hair:#272D36; --signal:#7FB2F0; --wrong:#F08A80; --true:#7FCF9B;
    --depends:#B69BEC;
  }
}

*,*::before,*::after{box-sizing:border-box;border-radius:0}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--page);color:var(--body);
  font:400 17.5px/1.6 var(--face);
  font-synthesis-weight:none;
}
@media (max-width:700px){body{font-size:16.5px}}

.wrap{max-width:var(--col);margin:0 auto;padding:0 1.2rem}
.wide{max-width:84ch;margin:0 auto;padding:0 1.2rem}

a{color:var(--signal);text-decoration:underline;
  text-decoration-thickness:1px;text-underline-offset:.14em}
a:hover,a:focus{text-decoration-thickness:2px}
a:visited{color:var(--meta)}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px}

h1,h2,h3{line-height:1.18;font-weight:600;margin:calc(var(--step)*1.5) 0 calc(var(--step)/2)}
h1{font-size:1.9rem;margin-top:calc(var(--step))}
h2{font-size:1.35rem;position:relative}
h3{font-size:1.1rem}
h2 .s{font:600 12px/1 var(--code);color:var(--signal);letter-spacing:.06em}
@media (min-width:900px){
  h2 .s{position:absolute;left:-5.5ch;top:.45em}
}
@media (max-width:899px){h2 .s{display:block;margin-bottom:.3rem}}
p{margin:0 0 var(--step)}

/* Entity marking: our prose is sans, the world's objects are mono. */
code,.e{font:400 .88em/1.4 var(--code);font-variant-numeric:tabular-nums}
.e{color:var(--body)}

/* ---- masthead + nav ---- */
.mast{border-bottom:1px solid var(--hair);padding:calc(var(--step)) 0 calc(var(--step)/2)}
.brand{display:flex;align-items:flex-start;gap:.7rem;text-decoration:none}
.brand:hover{text-decoration:none}
.wm{font:600 19px/1.1 var(--face);letter-spacing:.06em;text-transform:uppercase;color:var(--body)}
.dom{font:400 11px/1.4 var(--code);color:var(--meta);display:block;margin-top:.15rem}
.bmark{width:2px;height:30px;border-left:2px dashed var(--signal);flex:0 0 auto;margin-top:2px}
.tag{font-size:.92rem;color:var(--meta);margin:.7rem 0 0;max-width:60ch}
nav{margin:calc(var(--step)/2) 0 0;font:400 12px/1.6 var(--code);
  text-transform:uppercase;letter-spacing:.06em}
nav a{margin-right:1.1rem;display:inline-block}

/* ---- the bus: the only divider ---- */
.bus{height:5px;border:0;margin:calc(var(--step)*1.5) 0;
  border-top:1px solid var(--hair);
  background:repeating-linear-gradient(to right,
    var(--signal) 0 4px, transparent 4px 32px) top left/100% 4px no-repeat}

/* ---- layout signature: the cost line ---- */
.cost{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin:calc(var(--step)) 0;
  border-top:2px solid var(--signal);border-bottom:1px solid var(--hair);
  background:var(--panel)}
.cost div{padding:.6rem .8rem;border-left:1px solid var(--hair)}
.cost div:first-child{border-left:0}
.cost dt{font:600 10.5px/1.4 var(--code);letter-spacing:.08em;
  color:var(--meta);text-transform:uppercase;margin:0}
.cost dd{font:400 13px/1.5 var(--code);font-variant-numeric:tabular-nums;
  color:var(--body);margin:.25rem 0 0}
@media (max-width:700px){
  .cost{grid-template-columns:1fr}
  .cost div{border-left:0;border-top:1px solid var(--hair)}
  .cost div:first-child{border-top:0}
}

/* ---- the landing answer: only on the pages old download links point at.
   Short sentences, larger than body, before anything else in <main>, because
   the reader who arrives here is looking for a file and reads English as a
   second language. Everything else on the page can wait. ---- */
.landing{border-left:3px solid var(--signal);background:var(--panel);
  padding:.9rem 1.1rem;margin:0 0 calc(var(--step)) 0;font-size:1.06rem;
  line-height:1.55}
.landing p{margin:0 0 .55rem 0;max-width:58ch}
.landing p:last-child{margin-bottom:0}
.landing b{font-weight:600}
.landing .lang{font-size:.88rem;color:var(--meta)}

/* ---- second signature: the claim card ---- */
.claim{background:var(--panel);border:1px solid var(--hair);
  border-left:2px solid var(--meta);padding:.7rem .9rem;margin:calc(var(--step)) 0;
  font:400 13px/1.55 var(--code)}
.claim.w{border-left-color:var(--wrong)}
.claim.t{border-left-color:var(--true)}
.claim.d{border-left-color:var(--depends)}
.claim .lbl{font:600 10px/1.4 var(--code);letter-spacing:.09em;
  text-transform:uppercase;color:var(--meta);display:block;margin-bottom:.4rem}
.claim q{font-style:normal}
.claim q::before{content:"\201C"}
.claim q::after{content:"\201D"}
.claim .src{display:block;margin-top:.5rem;font-size:11.5px;color:var(--meta)}
@media (min-width:1100px){
  .claim{float:right;width:22ch;margin:.3rem -24ch .8rem 1.6rem;clear:right}
}

/* ---- verdict codes: colour is never the only signal ---- */
.v{font:600 11px/1.4 var(--code);letter-spacing:.07em;text-transform:uppercase;
  white-space:nowrap}
.v::before{content:"";display:inline-block;width:6px;height:6px;
  margin-right:.45rem;vertical-align:.08em;background:currentColor}
.v-wrong{color:var(--wrong)}
.v-true{color:var(--true)}
.v-depends{color:var(--depends)}

/* ---- figures ---- */
figure{margin:calc(var(--step)) 0}
figure img,figure svg{display:block;width:100%;height:auto;background:var(--panel)}
figcaption{font:400 12.5px/1.5 var(--code);color:var(--meta);
  margin-top:.5rem;border-top:1px solid var(--hair);padding-top:.45rem}

/* ---- tables ---- */
table{border-collapse:collapse;width:100%;margin:calc(var(--step)) 0;
  font:400 13px/1.5 var(--code);font-variant-numeric:tabular-nums}
th,td{text-align:left;vertical-align:top;padding:.45rem .6rem;
  border-bottom:1px solid var(--hair)}
th{font-weight:600;font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;
  color:var(--meta);border-bottom:2px solid var(--signal)}
tbody tr:hover{background:var(--panel)}

/* ---- the fixed header block on every page ---- */
.hdr{background:var(--panel);border-top:2px solid var(--signal);
  border-bottom:1px solid var(--hair);padding:.7rem .9rem;margin:calc(var(--step)) 0;
  font:400 12px/1.7 var(--code)}
.hdr b{font-weight:600;color:var(--meta);letter-spacing:.07em;text-transform:uppercase;
  font-size:10.5px}
.hdr span{display:block}

/* ---- front page claims index ---- */
.idx{list-style:none;margin:0;padding:0}
.idx li{display:grid;grid-template-columns:8.5rem 1fr auto;gap:.8rem;align-items:baseline;
  padding:.5rem 0;border-bottom:1px solid var(--hair)}
.idx .t{font-size:.98rem}
.idx .m{font:400 11.5px/1.4 var(--code);color:var(--meta);white-space:nowrap}
@media (max-width:700px){
  .idx li{grid-template-columns:1fr;gap:.15rem}
  .idx .m{margin-bottom:.2rem}
}

/* ---- provenance + footer ---- */
.prov{font-size:.92rem;color:var(--meta);border-left:2px solid var(--hair);
  padding-left:.9rem;margin:calc(var(--step)) 0}
footer{border-top:1px solid var(--hair);margin-top:calc(var(--step)*2);
  padding:calc(var(--step)) 0 calc(var(--step)*1.5);font-size:.88rem;color:var(--meta)}
footer a{color:var(--signal)}
footer .fl{font:400 12px/1.8 var(--code)}

.skip{position:absolute;left:-9999px}
.skip:focus{position:static;display:inline-block;padding:.4rem}

/* contact form */
.contact-form label{font-weight:600}
.contact-form input,.contact-form textarea{width:100%;max-width:38rem;padding:.5rem;font:inherit;border:1px solid #999;border-radius:4px;background:#fff;color:#111}
.contact-form textarea{resize:vertical}
.contact-form button{padding:.55rem 1.4rem;font:inherit;cursor:pointer;border:1px solid #333;border-radius:4px}
.cf-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}