@import url("../system/system.css?v=20260812-angular");

@font-face{
  font-family:"Conso";
  src:url("../system/fonts/conso-regular.woff2") format("woff2"),
      url("../system/fonts/conso-regular.woff") format("woff");
  font-weight:400;
  font-style:normal;
  font-display:swap
}

/* The briefing is a reading surface in the shared site system. This layer adds
   evidence-record structures only; system.css owns the page frame, typography,
   palette, navigation, section rhythm, focus treatment, and footer. */

.frontier-briefing .site-nav{z-index:10}
.briefing-hero{min-height:auto;padding-top:clamp(5.5rem,10vw,8rem);padding-bottom:clamp(3.5rem,8vw,6rem)}
.briefing-intro{max-width:min(92vw,64rem)}
.briefing-intro h1{max-width:18ch;text-shadow:none}
.briefing-intro .lede{max-width:54ch}
.briefing-plate{max-width:50rem;margin:clamp(2rem,4vw,3.2rem) 0 0}
.briefing-hero .seal{line-height:1.8}
.briefing-hero .seal a,.footer-seal a,.briefing-links a{
  color:var(--orange);text-decoration:none;border-bottom:1px solid color-mix(in srgb,var(--orange) 38%,transparent)
}
.briefing-hero .seal a:hover,.footer-seal a:hover,.briefing-links a:hover{border-color:var(--orange)}

.edition-readout{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  max-width:58rem;margin:clamp(1.6rem,3vw,2.5rem) 0 0;
  border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline)
}
.edition-readout div{min-width:0;padding:.8rem clamp(.6rem,1.5vw,1.2rem) .85rem 0}
.edition-readout div+div{padding-left:clamp(.6rem,1.5vw,1.2rem);border-left:1px solid var(--hairline)}
.edition-readout dt{
  font-family:var(--mono);font-size:.62rem;line-height:1.35;
  letter-spacing:.14em;text-transform:uppercase;color:var(--muted)
}
.edition-readout dd{
  margin:.3rem 0 0;font-family:var(--mono);font-size:.72rem;
  line-height:1.45;color:var(--bone);overflow-wrap:anywhere
}

.briefing-overview .body-text{max-width:58ch}
.delta-rail{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  width:100%;max-width:72rem;margin-top:clamp(2rem,3.5vw,3rem);
  border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline)
}
.rail-mark{
  display:grid;grid-template-columns:.75rem minmax(0,1fr);gap:.25rem .7rem;
  min-width:0;padding:1rem;color:var(--bone);text-decoration:none
}
.rail-mark:first-child{padding-left:0}
.rail-mark+.rail-mark{border-left:1px solid var(--hairline)}
.rail-mark span:not(.rail-symbol){font-size:clamp(1rem,1.2vw,1.12rem);line-height:1.4}
.rail-mark strong{
  grid-column:2;font-family:var(--mono);font-size:.61rem;font-weight:400;
  line-height:1.35;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)
}
.rail-mark:hover span:not(.rail-symbol){color:var(--orange)}
.rail-symbol{width:.58rem;height:.58rem;margin-top:.3rem;border:1px solid var(--orange);transform:rotate(45deg)}
.rail-changed .rail-symbol,.rail-correction .rail-symbol{background:var(--orange)}
.rail-correction .rail-symbol{border-radius:50%}
.rail-unchanged .rail-symbol{transform:none}
.briefing-links{margin-top:1.2rem;font-family:var(--mono);font-size:.69rem;line-height:1.8;color:var(--muted)}

.lane{scroll-margin-top:5rem}
.lane-head{max-width:72rem;margin-bottom:clamp(1.5rem,3vw,2.5rem)}
.lane-head .lane-status{max-width:62ch;margin:0 0 .75rem;color:var(--muted);font-size:.92rem;line-height:1.55}
.record{
  display:grid;grid-template-columns:3rem minmax(0,1fr);gap:clamp(.8rem,2vw,1.5rem);
  max-width:72rem;padding:clamp(1.4rem,3vw,2.2rem) 0;
  border-top:1px solid var(--hairline)
}
.record:last-child{border-bottom:1px solid var(--hairline)}
.record-index{font-family:var(--mono);font-size:.68rem;line-height:1.5;letter-spacing:.12em;color:var(--orange)}
.record-meta{display:flex;flex-wrap:wrap;gap:.35rem 1rem;font-family:var(--mono);font-size:.62rem;line-height:1.55;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.record-body h3{max-width:40ch;margin:.65rem 0 .75rem;font-family:var(--display);font-weight:600;font-size:clamp(1.25rem,2vw,1.65rem);line-height:1.25;color:var(--bone)}
.record-body>p{max-width:58ch;font-size:clamp(1.04rem,1.3vw,1.16rem);line-height:1.72;color:var(--bone)}
.boundary{
  display:grid;grid-template-columns:8rem minmax(0,1fr);gap:1rem;
  max-width:58rem;margin:1.2rem 0;padding:1rem 0;
  border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline)
}
.boundary strong{font-family:var(--mono);font-size:.62rem;font-weight:400;line-height:1.55;letter-spacing:.11em;text-transform:uppercase;color:var(--orange)}
.boundary p{margin:0;font-size:.98rem;line-height:1.62;color:var(--muted)}
.source-line{margin-top:.9rem;font-family:var(--mono);font-size:.68rem!important;color:var(--muted)!important}
.source-line strong{margin-right:.6rem;font-weight:400;letter-spacing:.1em;text-transform:uppercase}
.source-line a{margin-right:.7rem;color:var(--orange);text-decoration:none;border-bottom:1px solid color-mix(in srgb,var(--orange) 38%,transparent)}
.source-line a:hover{border-color:var(--orange)}

.wide-section>header{max-width:72rem}
.table-wrap{max-width:72rem;overflow-x:auto;-webkit-overflow-scrolling:touch}
.controls-table{width:100%;border-collapse:collapse;text-align:left}
.controls-table .analysis-note{caption-side:top;max-width:62rem;padding:0 0 1rem;text-align:left;font-size:.82rem;line-height:1.55;color:var(--muted)}
.controls-table .analysis-note strong{color:var(--bone)}
.controls-table th,.controls-table td{min-width:11rem;padding:1rem 1.1rem 1rem 0;border-top:1px solid var(--hairline);vertical-align:top;font-size:.95rem;line-height:1.58;color:var(--muted)}
.controls-table thead th{font-family:var(--mono);font-size:.62rem;font-weight:400;letter-spacing:.11em;text-transform:uppercase;color:var(--orange)}
.controls-table tbody th{font-family:var(--display);font-weight:600;color:var(--bone)}
.controls-table a{color:var(--orange)}
.status-word{font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--orange)}

.questions ol{counter-reset:question;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));max-width:72rem;margin:0;padding:0;list-style:none;border-top:1px solid var(--hairline)}
.questions li{counter-increment:question;position:relative;min-height:8rem;padding:1.2rem 1.2rem 1.2rem 3.5rem;border-bottom:1px solid var(--hairline);font-size:1.02rem;line-height:1.62;color:var(--muted)}
.questions li:nth-child(odd){border-right:1px solid var(--hairline)}
.questions li::before{content:counter(question,decimal-leading-zero);position:absolute;left:.2rem;top:1.35rem;font-family:var(--mono);font-size:.65rem;color:var(--orange)}

.method-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));max-width:72rem;border-top:1px solid var(--hairline)}
.method-grid>div{padding:1.2rem 1.5rem 1.2rem 0;border-bottom:1px solid var(--hairline)}
.method-grid>div+div{padding-left:1.5rem;border-left:1px solid var(--hairline)}
.method-grid h3{margin:0 0 .65rem;font-family:var(--display);font-size:1.08rem;color:var(--bone)}
.method-grid p,.method-grid ul{margin:0;font-size:.96rem;line-height:1.62;color:var(--muted)}
.method-grid ul{padding-left:1.1rem}
.footer-seal .seal{max-width:80rem;line-height:1.9}

@media(max-width:48rem){
  .edition-readout{grid-template-columns:repeat(2,minmax(0,1fr))}
  .edition-readout div:nth-child(3){padding-left:0;border-left:0}
  .edition-readout div:nth-child(n+3){border-top:1px solid var(--hairline)}
  .delta-rail{grid-template-columns:1fr}
  .rail-mark:first-child{padding-left:1rem}
  .rail-mark+.rail-mark{border-left:0;border-top:1px solid var(--hairline)}
  .questions ol,.method-grid{grid-template-columns:1fr}
  .questions li:nth-child(odd),.method-grid>div+div{border-left:0;border-right:0}
  .method-grid>div+div{padding-left:0}
}

@media(max-width:40rem){
  .record{grid-template-columns:1.7rem minmax(0,1fr);gap:.6rem}
  .boundary{grid-template-columns:1fr;gap:.4rem}
}

@media print{
  .briefing-hero{min-height:0}
  .record,.boundary,.questions li{break-inside:avoid}
}