/* Nickelgrid Materials Testing — laboratory report grid, 2026 */
:root{
  --paper:#fbfaf7;
  --panel:#f2f0ea;
  --ink:#1b1a18;
  --muted:#5e5b54;
  --rule:#d9d5cc;
  --rule-firm:#ada89d;
  --accent:#2d6a5c;
  --accent-soft:#e3ece8;
  --flag:#8c4a22;
}
@media (prefers-color-scheme: dark){
  :root{
    --paper:#15171a;
    --panel:#1c1f23;
    --ink:#e7e5df;
    --muted:#9e9b93;
    --rule:#2d3237;
    --rule-firm:#4a5057;
    --accent:#74bda9;
    --accent-soft:#1d2a28;
    --flag:#d79a6e;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.62;
  font-feature-settings:"kern" 1;
}
h1,h2,h3,h4{
  font-family:ui-serif,Georgia,"Iowan Old Style","Times New Roman",serif;
  font-weight:600;
  letter-spacing:-.01em;
  line-height:1.2;
  margin:0 0 .5em;
}
h1{font-size:2.05rem}
h2{font-size:1.35rem}
h3{font-size:1.06rem;margin-bottom:.35em}
p,ul,ol,table,figure,pre{margin:0 0 1.1em}
a{color:var(--accent-ink,var(--accent));text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{text-decoration-thickness:2px}
code,.mono,td.n,th.n{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
.wrap{max-width:70rem;margin:0 auto;padding:0 1.4rem}

/* ---- masthead ---- */
.mast{border-bottom:1px solid var(--rule-firm);background:var(--paper)}
.mast .wrap{display:flex;flex-wrap:wrap;align-items:flex-end;gap:.9rem 2rem;padding-top:1.1rem;padding-bottom:.8rem}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--ink);text-decoration:none}
.mark{width:26px;height:26px;flex:none;color:var(--rule-firm)}
.brand b{font-family:ui-serif,Georgia,serif;font-size:1.16rem;font-weight:600;letter-spacing:.01em;display:block;line-height:1.1}
.brand span{font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);display:block}
.mast nav{margin-left:auto}
.mast nav ul{list-style:none;display:flex;flex-wrap:wrap;gap:.1rem 1.05rem;margin:0;padding:0;font-size:.86rem}
.mast nav a{color:var(--muted);text-decoration:none}
.mast nav a:hover{color:var(--accent);text-decoration:underline}
.mast nav [aria-current]{color:var(--ink);font-weight:600;border-bottom:2px solid var(--accent)}

/* ---- page head ---- */
.ph{padding:2.6rem 0 1.6rem;border-bottom:1px solid var(--rule)}
.kicker{font-size:.74rem;letter-spacing:.17em;text-transform:uppercase;color:var(--flag);margin:0 0 .9rem}
.ph p.lead{font-size:1.1rem;max-width:44rem;color:var(--ink);margin-bottom:0}
.ph h1{max-width:40rem}

.stats{display:flex;flex-wrap:wrap;gap:0;border-bottom:1px solid var(--rule);margin:0}
.stats div{flex:1 1 9rem;padding:.9rem 1rem .9rem 0}
.stats b{display:block;font-family:ui-serif,Georgia,serif;font-size:1.3rem}
.stats i{font-style:normal;font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}

/* ---- two-column report grid ---- */
.sec{display:grid;grid-template-columns:9.5rem minmax(0,46rem);gap:0 2.6rem;padding:2.1rem 0;border-bottom:1px solid var(--rule)}
.sec:last-of-type{border-bottom:0}
.rail{font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding-top:.35rem}
.rail b{display:block;font-family:ui-monospace,Menlo,monospace;font-size:1.1rem;letter-spacing:0;color:var(--rule-firm);margin-bottom:.2rem}
.sec>.body>:last-child{margin-bottom:0}

/* ---- tables ---- */
table{width:100%;border-collapse:collapse;font-size:.88rem}
caption{text-align:left;font-size:.78rem;color:var(--muted);padding-bottom:.4rem}
th{text-align:left;font-weight:600;border-bottom:1.5px solid var(--rule-firm);padding:.3rem .7rem .3rem 0;vertical-align:bottom}
td{border-bottom:1px solid var(--rule);padding:.42rem .7rem .42rem 0;vertical-align:top}
tbody tr:hover td{background:var(--panel)}
td:last-child,th:last-child{padding-right:0}
.tnote{font-size:.78rem;color:var(--muted);margin-top:-.5rem}

/* ---- blocks ---- */
.note{background:var(--panel);border-left:3px solid var(--accent);padding:.9rem 1rem;font-size:.92rem}
.warn{background:var(--panel);border-left:3px solid var(--flag);padding:.9rem 1rem;font-size:.92rem}
.note>:last-child,.warn>:last-child{margin-bottom:0}
ul.tick,ul.cross{list-style:none;padding-left:1.5rem}
ul.tick li,ul.cross li{position:relative;margin-bottom:.4rem}
ul.tick li::before{content:"+";position:absolute;left:-1.5rem;color:var(--accent);font-weight:700}
ul.cross li::before{content:"\2212";position:absolute;left:-1.5rem;color:var(--flag);font-weight:700}
dl.spec{margin:0 0 1.1em}
dl.spec dt{font-weight:600;font-size:.88rem;border-top:1px solid var(--rule);padding-top:.5rem;margin-top:.5rem}
dl.spec dd{margin:.1rem 0 0;color:var(--muted);font-size:.92rem}
figure{margin:0 0 1.2em}
figure svg{display:block;width:100%;height:auto;background:var(--panel);border:1px solid var(--rule)}
figcaption{font-size:.78rem;color:var(--muted);padding-top:.5rem;border-top:1px solid var(--rule);margin-top:.5rem}
.cols{columns:2 16rem;column-gap:2rem}
.cols p{break-inside:avoid}
.chip{display:inline-block;font-family:ui-monospace,Menlo,monospace;font-size:.78rem;background:var(--accent-soft);color:var(--accent);padding:.08rem .4rem;border-radius:2px}
.mdef{display:grid;grid-template-columns:7rem minmax(0,1fr);gap:.3rem 1rem;font-size:.9rem;border-top:1px solid var(--rule);padding-top:.7rem;margin-bottom:.9rem}
.mdef dt{font-family:ui-monospace,Menlo,monospace;color:var(--flag)}
.mdef dd{margin:0}

/* ---- footer ---- */
footer{border-top:1px solid var(--rule-firm);margin-top:2.4rem;padding:1.6rem 0 2.6rem;font-size:.82rem;color:var(--muted)}
footer .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1.2rem}
footer nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.2rem 0}
footer nav li+li::before{content:"\00b7";margin:0 .55rem;color:var(--rule-firm)}
footer a{color:var(--muted)}
footer .legal{grid-column:1/-1;border-top:1px solid var(--rule);padding-top:.9rem;font-size:.76rem}

@media (max-width:52rem){
  .sec{grid-template-columns:minmax(0,1fr);gap:.7rem}
  .rail{padding-top:0;display:flex;gap:.6rem;align-items:baseline;border-bottom:1px solid var(--rule);padding-bottom:.4rem}
  .rail b{margin:0;font-size:.9rem}
  h1{font-size:1.62rem}
  .mast nav{margin-left:0;width:100%}
  footer .wrap{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:24rem){
  body{font-size:15px}
  .wrap{padding:0 .9rem}
  table{font-size:.8rem}
}

/* ---- inline figures ---- */
.chart{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.chart text{font-size:11px;fill:var(--muted)}
.chart .ttl{font-size:12px;fill:var(--ink)}
.chart .ann{font-size:10.5px;fill:var(--ink)}
.chart .ax{stroke:var(--rule-firm);stroke-width:1;fill:none}
.chart .grid{stroke:var(--rule);stroke-width:.75;fill:none}
.chart .c1{stroke:var(--accent);stroke-width:1.9;fill:none;stroke-linejoin:round}
.chart .c2{stroke:var(--flag);stroke-width:1.9;fill:none;stroke-linejoin:round}
.chart .c3{stroke:var(--rule-firm);stroke-width:1.6;fill:none;stroke-dasharray:6 3;stroke-linejoin:round}
.chart .dot{fill:var(--accent);stroke:none}
.chart .box{fill:var(--paper);stroke:var(--rule-firm);stroke-width:1}
.chart .lead{stroke:var(--rule-firm);stroke-width:.9;fill:none}
.chart .arw{fill:var(--rule-firm);stroke:none}

/* small screens: never let a long token widen the page */
td,th,dd,dt,li,p{overflow-wrap:anywhere}