/* The Learning Harness · shared stylesheet
   Tokens mirror index.html. Keep both in step. */
@font-face{
  font-family:'Newsreader'; font-style:normal; font-weight:400 500; font-display:swap;
  src:url(/assets/fonts/newsreader-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face{
  font-family:'Fragment Mono'; font-style:normal; font-weight:400; font-display:swap;
  src:url(/assets/fonts/fragment-mono-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
:root{
  --bg:#f8f6f0; --ink:#1c1c1a; --dim:#6a675f; --line:#e2ddd0;
  --card:#ffffff; --accent:#b4502e; --blue:#1f5fbf; --ahead:#ddd8c9;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --serif:'Newsreader',Georgia,serif;
  --mono:'Fragment Mono','SF Mono',Consolas,monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#151513; --ink:#eceae4; --dim:#9d9a92; --line:#33322d;
    --card:#1e1e1b; --accent:#d9825c; --blue:#7fb0ff; --ahead:#38372f;
  }
}
:root[data-theme="dark"]{
  --bg:#151513; --ink:#eceae4; --dim:#9d9a92; --line:#33322d;
  --card:#1e1e1b; --accent:#d9825c; --blue:#7fb0ff; --ahead:#38372f;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%; scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--serif); font-size:18px; line-height:1.6;
}
main{max-width:680px; margin:0 auto; padding:40px 22px 80px}
a{color:var(--blue)}
a:hover{text-decoration-thickness:2px}
.skip{position:absolute; left:-9999px; top:0; background:var(--card); color:var(--ink); padding:8px 12px; z-index:10}
.skip:focus{left:12px; top:12px}

/* top bar */
.top{
  display:flex; justify-content:space-between; align-items:baseline; gap:16px;
  margin:0 0 40px; flex-wrap:wrap;
}
.top a{text-decoration:none}
.top a:hover{text-decoration:underline}
.eyebrow{
  font-family:var(--mono); font-size:11px; letter-spacing:2.4px;
  text-transform:uppercase; color:var(--dim); margin:0;
}
.top nav{display:flex; gap:18px; flex-wrap:wrap}
.top nav a{
  font-family:var(--mono); font-size:11px; letter-spacing:2.4px;
  text-transform:uppercase; color:var(--dim);
}
.top nav a[aria-current="page"]{color:var(--accent)}

/* breadcrumbs */
.crumbs{font-family:var(--mono); font-size:12px; color:var(--dim); margin:0 0 18px}
.crumbs ol{list-style:none; margin:0; padding:0; display:flex; flex-wrap:wrap; gap:6px}
.crumbs li+li::before{content:"›"; margin-right:6px; color:var(--dim)}
.crumbs a{color:var(--dim)}

/* headings */
h1{
  font-family:var(--sans); font-weight:600; font-size:40px; line-height:1.12;
  margin:0 0 14px; letter-spacing:-0.01em;
}
h1 span{color:var(--accent)}
.lead{font-size:20px; color:var(--dim); margin:0 0 10px; max-width:32em}
.byline{
  font-family:var(--mono); font-size:12px; color:var(--dim); margin:0 0 28px;
  display:flex; gap:14px; flex-wrap:wrap;
}
.byline a{color:var(--dim)}
article h2{
  font-family:var(--sans); font-weight:600; font-size:24px; line-height:1.25;
  margin:48px 0 14px; letter-spacing:-0.005em;
}
article h3{
  font-family:var(--sans); font-weight:600; font-size:18px; line-height:1.3;
  margin:30px 0 8px;
}
.label{
  font-family:var(--sans); font-weight:600; font-size:15px; letter-spacing:1.6px;
  text-transform:uppercase; color:var(--dim); margin:56px 0 20px;
}
p{margin:0 0 18px}
ul,ol{padding-left:1.3em; margin:0 0 18px}
li{margin:0 0 8px}
li p{margin:0 0 6px}
strong{font-weight:600}
code,kbd{font-family:var(--mono); font-size:0.86em; background:var(--card); border:1px solid var(--line); border-radius:4px; padding:1px 5px}
pre{background:var(--card); border:1px solid var(--line); border-radius:12px; padding:14px 16px; overflow-x:auto; font-family:var(--mono); font-size:14px; line-height:1.5; margin:0 0 18px}
pre code{background:none; border:0; padding:0; font-size:inherit}
hr{border:0; border-top:1px solid var(--line); margin:40px 0}
blockquote{margin:0 0 18px; padding:2px 0 2px 18px; border-left:3px solid var(--line); color:var(--dim)}
img,svg{max-width:100%; height:auto}

/* summary box near the top of every guide */
.tldr{
  border-left:3px solid var(--accent); padding:4px 0 4px 18px; margin:0 0 32px;
}
.tldr p{margin:0 0 10px; font-size:17.5px}
.tldr p:last-child{margin:0}
.tldr .k{font-family:var(--mono); font-size:11px; letter-spacing:2.4px; text-transform:uppercase; color:var(--accent); display:block; margin:0 0 8px}

/* cards, mirrors index.html .step */
.step{
  background:var(--card); border:1px solid var(--line); border-radius:12px;
  padding:18px 20px; margin:0 0 12px;
}
.step h3{font-family:var(--sans); font-weight:600; font-size:17px; margin:0 0 6px}
.step h3 b{font-family:var(--mono); font-size:12px; font-weight:400; color:var(--accent); margin-right:10px; vertical-align:2px}
.step p{margin:0; font-size:16.5px; color:var(--dim)}
.step p+p{margin-top:8px}

/* figures */
.figure{
  background:var(--card); border:1px solid var(--line); border-radius:12px;
  padding:18px 14px 12px; margin:0 0 18px; overflow-x:auto;
}
.figure svg{display:block; width:100%; height:auto}
.figure p, .figure figcaption{font-size:14px; color:var(--dim); margin:10px 4px 0}

/* tables */
.tablewrap{overflow-x:auto; margin:0 0 22px; border:1px solid var(--line); border-radius:12px; background:var(--card)}
table{border-collapse:collapse; width:100%; font-size:15.5px; line-height:1.45}
th,td{text-align:left; vertical-align:top; padding:10px 12px; border-bottom:1px solid var(--line)}
th{font-family:var(--sans); font-weight:600; font-size:13px; letter-spacing:0.6px; text-transform:uppercase; color:var(--dim); background:var(--bg)}
tr:last-child td{border-bottom:0}
td:first-child{font-weight:500}

/* FAQ */
.faq h3{margin-top:24px}
.faq p{color:var(--ink)}

/* sources */
.sources{font-size:15px; color:var(--dim)}
.sources li{margin:0 0 8px}
.sources a{overflow-wrap:anywhere}

/* status / call to action, mirrors index.html .status */
.status{border-left:3px solid var(--accent); padding:2px 0 2px 18px; margin:48px 0 0}
.status p{margin:0 0 10px; font-size:17px}
.status p:last-child{margin:0}

/* guide list */
.guides{list-style:none; padding:0; margin:0 0 12px}
.guides li{
  background:var(--card); border:1px solid var(--line); border-radius:12px;
  padding:16px 20px; margin:0 0 12px;
}
.guides li a{font-family:var(--sans); font-weight:600; font-size:17px; text-decoration:none; color:var(--ink)}
.guides li a:hover{color:var(--blue); text-decoration:underline}
.guides li p{margin:6px 0 0; font-size:16px; color:var(--dim)}

/* related links block at the end of a guide */
.related{margin:48px 0 0}
.related ul{list-style:none; padding:0; margin:0}
.related li{margin:0 0 8px; font-size:17px}

/* footer */
.foot{
  margin-top:56px; padding-top:20px; border-top:1px solid var(--line);
  font-family:var(--mono); font-size:12px; color:var(--dim);
  display:flex; justify-content:space-between; gap:12px 20px; flex-wrap:wrap;
}
.foot nav{display:flex; gap:14px; flex-wrap:wrap}
.foot a{color:var(--dim)}

@media (max-width:520px){
  h1{font-size:32px}
  body{font-size:17px}
  main{padding:28px 18px 60px}
  article h2{font-size:22px}
  .top{margin-bottom:28px}
}
@media print{
  .top nav,.foot nav,.skip{display:none}
  body{background:#fff; color:#000}
}