/* content.css - the reference pages (learn, technology, devices, tools, benchmarks,
   privacy, the product pages). "Timeline", DESIGN.md (Cam, 2026-10-08, variation A2):
   graphite ground, green = brand ("Sync", actions, links, the stroke line), amber =
   the playhead and keyboard focus only. Pages are tracks and clips, not card grids;
   a border is the last resort. */
:root{
  --ground:#18191b; --surface:#1f2123; --surface-2:#272a2d; --surface-3:#30343a; --shift:#1c1d1f;
  --line:#383c42; --line-hi:#4a4f57;
  --ink:#ebe9e4; --ink-2:#bdbcb6; --ink-3:#b0afa9;
  --teal:#00d4aa; --teal-deep:#00967a; --green-dim:#123a33; --on-green:#02150f;
  --amber:#ffb000; --warn:#ffb000;
  --display:"Barlow Condensed","Barlow Condensed Fallback","Barlow Condensed Fallback","Arial Narrow",system-ui,sans-serif;
  --body:"Barlow","Barlow Fallback","Segoe UI",system-ui,-apple-system,sans-serif;
  --mono:"Martian Mono","Martian Mono Fallback","Martian Mono Fallback","Cascadia Mono",Consolas,monospace;
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px;
  --sp-5:48px; --sp-6:64px; --sp-7:96px;
  --ease:cubic-bezier(.2,0,0,1);
  color-scheme:dark;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}}
body{background:var(--ground);color:var(--ink);font-family:var(--body);
  font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--teal);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#2ee6c0}
p a,li a,td a,th a,dd a{text-decoration:underline;text-decoration-color:rgba(0,212,170,.35);
  text-underline-offset:3px}
p a:hover,li a:hover,td a:hover,th a:hover,dd a:hover{text-decoration-color:currentColor}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,
textarea:focus-visible,select:focus-visible,label:focus-within{
  outline:2px solid var(--amber);outline-offset:3px;border-radius:3px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.wrap{max-width:1200px;margin:0 auto;padding:0 var(--sp-4)}
h1,h2,h3{font-family:var(--display);font-weight:700;letter-spacing:0;
  line-height:1.05;text-wrap:balance}
strong,b{color:var(--ink);font-weight:600}


/* page head */
.crumbs{display:flex;flex-wrap:wrap;gap:4px 10px;font-family:var(--mono);font-size:12px;color:var(--ink-3);
  padding-top:var(--sp-6)}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--ink)}
.crumbs .sep{color:var(--ink-3)}
.crumbs [aria-current]{color:var(--ink-2)}
header.page{padding:var(--sp-3) 0 var(--sp-5)}
header.page h1{font-size:clamp(44px,6vw,76px);font-weight:800;line-height:.98;max-width:20ch;
  margin-bottom:var(--sp-3)}
.lede{font-size:19px;color:var(--ink-2);max-width:62ch}
.stamp{margin-top:var(--sp-3);font-family:var(--mono);font-size:12px;line-height:1.6;color:var(--ink-2)}
.cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:var(--sp-4)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;
  padding:0 22px;border-radius:3px;font-weight:600;font-size:17px;
  border:1px solid transparent;cursor:pointer;font-family:var(--body);
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .12s var(--ease)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--teal);color:var(--on-green)}
.btn-primary:hover{background:#2ee6c0;color:var(--on-green);transform:translateY(-1px)}
.btn-ghost{color:var(--ink);border-color:var(--line-hi);background:transparent}
.btn-ghost:hover{border-color:var(--ink-3);background:var(--surface);color:var(--ink)}

/* body copy */
main section{padding:var(--sp-5) 0}
main section + section{padding-top:var(--sp-3)}
main section.shift{background:var(--shift);padding:var(--sp-6) 0}
main h2{font-size:clamp(31px,3.6vw,45px);margin-bottom:var(--sp-2);max-width:26ch}
main h3{font-size:25px;margin:var(--sp-4) 0 var(--sp-1)}
main p{color:var(--ink-2);max-width:68ch;margin-bottom:var(--sp-2)}
main ul,main ol{color:var(--ink-2);max-width:68ch;margin:0 0 var(--sp-2) 1.2em}
main li{margin-bottom:6px;padding-left:4px}
main li::marker{color:var(--ink-3)}
.col{max-width:760px}
code,kbd{font-family:var(--mono);font-size:.875em;color:var(--ink);background:var(--surface-2);
  padding:1px 6px;border-radius:3px}
pre{font-family:var(--mono);font-size:14px;line-height:1.6;color:var(--ink);
  background:var(--surface);border-radius:6px;padding:var(--sp-3);overflow-x:auto;
  max-width:760px;margin:var(--sp-2) 0 var(--sp-3)}
pre code{background:none;padding:0;font-size:inherit;overflow-wrap:normal}
/* file paths and field names are long single words: let them break on a phone */
code{overflow-wrap:anywhere}
dl.defs dt,dl.defs dd{min-width:0}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--ink)}

/* definition rows: a field and what it means */
dl.defs{display:grid;grid-template-columns:minmax(120px,max-content) 1fr;gap:12px var(--sp-3);
  max-width:760px;margin:var(--sp-3) 0}
dl.defs dt{font-family:var(--mono);font-size:14px;color:var(--ink);padding-top:2px}
dl.defs dd{color:var(--ink-2)}

/* tables: the matrix, the requirement rows */
.tablewrap{background:var(--surface);border:1px solid var(--line);border-radius:6px;overflow-x:auto;
  margin:var(--sp-3) 0;max-width:900px}
table{width:100%;border-collapse:collapse;font-size:16px}
caption{text-align:left;padding:14px 18px 0;font-size:14px;color:var(--ink-2)}
th,td{padding:12px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--surface-2);font-family:var(--mono);font-weight:500;font-size:12px;color:var(--ink)}
tbody th{background:none;font-family:var(--display);font-size:19px;font-weight:700;letter-spacing:.01em}
tr:last-child td,tr:last-child th{border-bottom:0}
td{color:var(--ink-2)}
td.v{font-family:var(--mono);color:var(--ink);white-space:nowrap;font-variant-numeric:tabular-nums}

/* state: shape and word as well as colour */
.state{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;
  white-space:nowrap;color:var(--ink)}
.state::before{content:"";width:9px;height:9px;flex:none}
.state.ok::before{background:var(--teal);border-radius:50%}
.state.via::before{border:2px solid var(--warn);border-radius:50%}
.state.no::before{background:var(--ink-3);clip-path:polygon(0 40%,100% 40%,100% 60%,0 60%)}
.note{max-width:760px;background:var(--surface);border-radius:6px;padding:var(--sp-2) var(--sp-3);
  color:var(--ink-2);margin:var(--sp-3) 0}
.note b{color:var(--ink)}
.note.warn{box-shadow:inset 3px 0 0 var(--amber)}

/* steps that really are a sequence */
ol.seq{list-style:none;counter-reset:s;margin:var(--sp-3) 0 0;display:flex;
  flex-direction:column;gap:var(--sp-3);max-width:760px}
ol.seq li{counter-increment:s;display:grid;grid-template-columns:40px 1fr;column-gap:var(--sp-2);
  color:var(--ink-2);padding:0}
ol.seq li::before{content:counter(s);font-family:var(--mono);font-size:14px;color:var(--teal);padding-top:2px}
ol.seq li b{display:block;font-family:var(--display);font-size:22px;letter-spacing:.005em;margin-bottom:2px}

/* figures: diagrams drawn from the real pipeline */
figure{margin:var(--sp-4) 0;max-width:900px}
figure svg{width:100%;height:auto;display:block}
figcaption{font-size:14px;color:var(--ink-2);margin-top:var(--sp-1);max-width:68ch}

/* questions */
.faq{max-width:820px;margin-top:var(--sp-2)}
details{border-bottom:1px solid var(--line)}
details[open]{border-color:var(--line-hi)}
summary{cursor:pointer;padding:16px 0;font-family:var(--display);font-weight:700;font-size:21px;
  letter-spacing:.005em;list-style:none;display:flex;justify-content:space-between;
  align-items:center;gap:var(--sp-3);min-height:44px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--teal);font-family:var(--mono);font-size:20px}
details[open] summary::after{content:"\2013"}
details p{padding:0 0 18px;font-size:16px;max-width:70ch;margin:0}

/* read next: a list, not a card grid */
.next{list-style:none;margin:var(--sp-3) 0 0;display:grid;gap:var(--sp-2);max-width:760px}
.next li{margin:0;padding:0}
.next a{display:block;font-family:var(--display);font-weight:700;font-size:23px;
  letter-spacing:.005em;text-decoration:none}
.next span{display:block;color:var(--ink-2);font-size:15px}
.band{background:var(--green-dim);border-radius:6px;padding:var(--sp-4);max-width:900px}
.band h2{margin-bottom:var(--sp-1)}
.band p{margin-bottom:0}

/* the site map at the foot of every page */
footer.site{border-top:1px solid var(--line);padding:var(--sp-5) 0 var(--sp-4);font-size:14px;
  color:var(--ink-2);margin-top:var(--sp-5)}
.sitemap{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:var(--sp-3);
  margin-bottom:var(--sp-4)}
.sitemap .h{font-family:var(--display);font-weight:700;color:var(--ink);font-size:19px;margin-bottom:8px}
.sitemap ul{list-style:none;margin:0;display:grid;gap:6px}
.sitemap a{color:var(--ink-2)}
.sitemap a:hover{color:var(--ink)}
.legal{display:flex;flex-wrap:wrap;gap:var(--sp-2);justify-content:space-between;color:var(--ink-2)}

@media(max-width:820px){
  .wrap{padding:0 var(--sp-3)}
  .crumbs{padding-top:var(--sp-4)}
  header.page{padding-bottom:var(--sp-4)}
  main section{padding:var(--sp-4) 0}
  main section.shift{padding:var(--sp-5) 0}
  th,td{padding:10px 12px}
  dl.defs{grid-template-columns:1fr;gap:2px}
  dl.defs dd{margin-bottom:12px}
  ol.seq li{grid-template-columns:28px 1fr}
  .band{padding:var(--sp-3)}
}