/* TelemetryLab Research: shared article design (2026-09-28). Same language as the homepage: navy header, hero and
   footer; a paper reading body; Archivo headings at weight 500; Source Sans body; hairlines instead of boxes and
   stripes; one accent (deep mint on paper, pale mint on navy) and one risk colour, used sparingly. Presentation only:
   the reports' text, numbers and chart data are unchanged. Per-article components follow the base, scoped by the
   body class (.article-codebook, .article-recall, .article-safety). */

:root {
  --navy: #081625; --navy2: #102336;
  --paper: #f2f3f3; --surface: #ffffff; --wash: #e9edef;
  --ink: #142232; --ink2: #2f4050; --mut: #52616e; --faint: #8593a0;
  --line: #cfd8de; --line2: #e1e6ea;
  --accent: #1f7a57; --accent-soft: #e2f1e9; --mint: #c7f5dc;
  --risk: #a9442f; --risk-soft: #f6e7e2;
  --on-navy: #f4f6f8; --on-navy-mut: #b4c1cf; --on-navy-line: #2c3e50;
  --disp: 'Archivo', Arial, sans-serif;
  --sans: 'Source Sans 3', Arial, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --wide: 1160px; --read: 760px; --pad: 32px;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; border-radius: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { font: 400 18px/1.7 var(--sans); color: var(--ink2); background: var(--paper); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img, svg { display: block; max-width: 100%; }
b, strong { font-weight: 600; color: var(--ink); }
a { color: var(--ink); text-decoration: underline; text-decoration-color: #9fb0bc; text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
::selection { background: #aadfc5; color: var(--navy); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.wide { max-width: var(--wide); margin-inline: auto; padding-inline: var(--pad); }
.read { max-width: var(--wide); margin-inline: auto; padding-inline: var(--pad); }
.read > :not(.kicker) { max-width: var(--read); }   /* narrow measure, same left edge as every other block */
h1, h2, h3, h4 { font-family: var(--disp); font-weight: 500; color: var(--ink); letter-spacing: -.02em; }
h2 { font-size: clamp(30px, 3.1vw, 40px); line-height: 1.14; letter-spacing: -.03em; max-width: 780px; text-wrap: balance; }
h2 em, h2 .hl { font-style: normal; color: var(--accent); }
h3 { font-size: 20px; line-height: 1.3; }
.ey, .label { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); }
.mono { font-family: var(--mono); }
section { padding-top: 96px; }
.gi { font-size: 18px; color: var(--mut); line-height: 1.65; margin-top: 18px; max-width: 700px; }

/* ---------- site header (same as the homepage) ---------- */
.preview-skip { position: fixed; top: -100px; left: 16px; z-index: 300; background: var(--mint); color: var(--navy); padding: 12px 18px; text-decoration: none; }
.preview-skip:focus { top: 12px; }
.preview-nav { position: sticky; top: 0; z-index: 120; background: #081625f7; color: var(--on-navy); border-bottom: 1px solid #cadbeb24; }
.preview-nav-inner { width: min(1500px, calc(100% - 7.6vw)); min-height: 82px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.preview-nav a { color: inherit; text-decoration: none; }
.preview-brand { display: inline-flex; align-items: center; gap: 5px; flex-shrink: 0; font: 700 22px/1 Manrope, Arial, sans-serif; letter-spacing: -.02em; }
.preview-brand img { width: 33px; height: 33px; }
.preview-brand .brand-accent { background: linear-gradient(135deg, #39d98a, #4f87ff); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }   /* canonical logo */
.preview-nav-links { display: flex; align-items: center; gap: 34px; font-size: 15px; }
.preview-nav-links a:hover, .preview-nav-links [aria-current] { color: #d2f4e2; }
.preview-nav-links .preview-contact { border: 1px solid #c3d2df88; padding: 9px 17px; }
.preview-nav :focus-visible { outline-color: var(--mint); }

/* ---------- hero band ---------- */
header.article-hero { background: var(--navy); color: var(--on-navy); padding: 64px var(--pad) 72px; }
.article-heading-layout { display: grid; grid-template-columns: 1.1fr 1fr; gap: 5%; align-items: center; max-width: 1240px; margin: 0 auto; }
.article-heading-copy { min-width: 0; }
.article-hero :is(.kick, .kicker, .backlink) { display: block; font: 500 12px/1.7 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--on-navy-mut); margin: 0 0 14px; text-align: left; }
.article-hero :is(.kick, .kicker, .backlink) a { color: var(--mint); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.article-hero h1 { font: 500 clamp(40px, 4.4vw, 64px)/1.06 var(--disp); letter-spacing: -.04em; color: var(--on-navy); margin-top: 16px; text-wrap: balance; }
.article-hero :is(.dek, .sub) { font: 400 19px/1.6 var(--sans); color: #c1ceda; margin-top: 24px; max-width: 620px; }
.article-hero :is(.dek, .sub) b { color: var(--on-navy); }
.article-hero :is(.meta, .meta-chips) { border-top: 1px solid var(--on-navy-line); padding-top: 16px; margin-top: 28px; color: var(--on-navy-mut); font: 400 14px/1.6 var(--sans); }
.article-hero :is(.meta, .meta-chips) span { display: block; padding: 2px 0; text-transform: none; letter-spacing: 0; font: inherit; }
.article-hero :is(.meta, .meta-chips) b { color: var(--on-navy); }
.article-hero-image { margin: 0; min-width: 0; }
.article-hero-image img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; }


/* ---------- section header ---------- */
.kicker { display: flex; align-items: baseline; gap: 16px; margin-bottom: 26px; }
.kicker .k { order: 1; font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); white-space: nowrap; }
.kicker::after { content: ""; order: 2; flex: 1; height: 1px; background: var(--line); transform: translateY(-4px); }
.kicker .n { order: 3; font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); white-space: nowrap; }

/* ---------- lead paragraph ---------- */
.lede { padding-top: 80px; }
.lede p { font-size: 21px; line-height: 1.65; color: var(--ink2); }
.lede p b { color: var(--ink); }

/* ---------- figure shell ---------- */
.fig { background: var(--surface); border: 1px solid var(--line); padding: 30px 32px 24px; margin-top: 28px; }
.figlab { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); margin-bottom: 10px; }
.figt { font: 500 21px/1.3 var(--disp); letter-spacing: -.02em; color: var(--ink); }
.figs { font-size: 15px; line-height: 1.55; color: var(--mut); margin-top: 8px; max-width: 820px; }
.src { font-size: 13px; line-height: 1.6; color: var(--mut); margin-top: 16px; }
.article-chart-scroll, .article-table-scroll { max-width: 100%; min-width: 0; overflow-x: auto; }

/* ---------- sources ---------- */
.srcnote { background: var(--surface); border: 1px solid var(--line); padding: 24px 28px; font-size: 15px; line-height: 1.65; color: var(--ink2); margin-top: 34px; }
.srcgroup { margin-top: 36px; }
.srcgroup h3 { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.srclist { list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 40px; }
.srclist li { font-size: 14px; line-height: 1.5; color: var(--ink2); padding: 11px 0; border-bottom: 1px solid var(--line2); }
.srclist a { font-weight: 500; color: var(--ink); }
.pub { color: var(--mut); }
.tag { font: 500 11px/1 var(--disp); letter-spacing: .06em; text-transform: uppercase; color: var(--mut); margin-left: 8px; white-space: nowrap; }
.tag.prim { color: var(--accent); }

/* ---------- footer ---------- */
footer, .sitefoot { margin-top: 110px; background: var(--navy); color: var(--on-navy-mut); padding: 52px 0 60px; font-size: 14px; line-height: 1.7; border-top: 1px solid var(--on-navy-line); }
footer :is(.f-in, .wrap) { max-width: var(--wide); margin-inline: auto; padding-inline: var(--pad); }
footer .logo { display: inline-flex; align-items: center; gap: 6px; margin-bottom: 22px; text-decoration: none; }
footer .logo img { width: 28px; height: 28px; }
footer .logo b { font: 700 18px/1 Manrope, Arial, sans-serif; color: var(--on-navy); letter-spacing: -.02em; }
footer .logo b i { font-style: normal; background: linear-gradient(135deg, #39d98a, #4f87ff); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }   /* canonical logo */
footer b { color: var(--on-navy); }
footer a { color: var(--on-navy); text-decoration-color: #5d7285; }
footer a:hover { text-decoration-color: var(--on-navy); }

/* =====================================================================================================
   THE CODEBOOK LOCK
   ===================================================================================================== */
.article-codebook .regwall { display: none; }
.article-codebook .hero-decode { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 14px; margin-top: 30px; padding: 16px 20px; border: 1px solid var(--on-navy-line); font: 400 15px/1.5 var(--mono); }
.article-codebook .hd-raw { color: var(--on-navy-mut); }
.article-codebook .hd-arr { color: #6f8295; }
.article-codebook .hd-key { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--on-navy); }
.article-codebook .hd-fact { color: var(--mint); }

/* dashboard vs reads */
.vs-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 36px; border: 1px solid var(--line); background: var(--surface); }
.vs-col { padding: 32px 34px 34px; min-width: 0; }
.vs-col.l { background: var(--wash); border-right: 1px solid var(--line); }
.vs-h { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); margin-bottom: 14px; }
.vs-col.r .vs-h { color: var(--accent); }
.vs-t { font: 500 23px/1.25 var(--disp); letter-spacing: -.02em; color: var(--ink); margin-bottom: 20px; }
.lights span { display: block; font-size: 15px; line-height: 1.45; color: var(--ink2); padding: 11px 0; border-top: 1px solid var(--line); }
.lights span:first-child { border-top: 0; }
.reads { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 28px; }
.reads span { font-size: 15px; line-height: 1.45; color: var(--ink2); padding-left: 16px; position: relative; }
.reads span::before { content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.vs-foot { font-size: 14px; line-height: 1.6; color: var(--mut); padding-top: 14px; }

/* raw register -> codebook -> fact */
.article-codebook .decode { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr) minmax(0, 1fr); margin-top: 40px; border: 1px solid var(--line); background: var(--surface); }
.article-codebook .dc { padding: 28px 30px; display: flex; flex-direction: column; justify-content: center; min-width: 0; }
.article-codebook .dc.key { background: var(--navy); color: var(--on-navy); text-align: center; align-items: center; }
.article-codebook .dc.out { background: var(--accent-soft); }
.article-codebook .dlab { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); margin-bottom: 12px; }
.article-codebook .dc.key .dlab { color: var(--mint); }
.article-codebook .dc.out .dlab { color: var(--accent); }
.article-codebook .dval { font: 400 18px/1.45 var(--mono); color: var(--ink); }
.article-codebook .dc.key .dval { color: var(--on-navy); font-size: 15px; line-height: 1.6; }
.article-codebook .dnote { font-size: 14px; line-height: 1.55; color: var(--mut); margin-top: 12px; }
.article-codebook .dc.key .dnote { color: var(--on-navy-mut); }
.article-codebook .after-decode { font-size: 18px; line-height: 1.65; color: var(--mut); margin-top: 34px; max-width: 720px; }

/* architecture layers */
.article-codebook .arch { margin-top: 40px; display: grid; gap: 12px; }
.article-codebook .lay { position: relative; display: grid; grid-template-columns: 260px 1fr 190px; gap: 28px; padding: 26px 30px; background: var(--surface); border: 1px solid var(--line); }
.article-codebook .lay.cloud { background: transparent; border-style: dashed; }
.article-codebook .lay.ias { border-color: var(--accent); }
.article-codebook .lay.oemd { margin-left: 48px; }
.article-codebook .lay.ecs { background: var(--wash); }
.article-codebook .lay h3 { font: 500 18px/1.3 var(--disp); letter-spacing: -.015em; color: var(--ink); }
.article-codebook .lay h3 .sub { display: block; font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); margin-top: 8px; }
.article-codebook .lay.ias h3 .sub { color: var(--accent); }
.article-codebook .lay p { font-size: 15px; line-height: 1.6; color: var(--ink2); }
.article-codebook .lay .proto { font: 400 12px/1.9 var(--mono); color: var(--mut); align-self: center; text-align: right; }
.article-codebook .readpin { position: absolute; top: -11px; right: 24px; font: 500 12px/1 var(--disp); letter-spacing: .07em; text-transform: uppercase; background: var(--accent); color: #fff; padding: 5px 10px; }

/* three tiers */
.article-codebook .tiers { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; margin-top: 40px; }
.article-codebook .tcard { display: flex; flex-direction: column; padding-top: 20px; border-top: 1px solid var(--ink); min-width: 0; }
.article-codebook .tnum { font: 500 40px/1 var(--disp); letter-spacing: -.04em; color: var(--ink); }
.article-codebook .tg { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); margin-top: 14px; }
.article-codebook .tcard.t0 .tg { color: var(--accent); }
.article-codebook .tcard h3 { font: 500 20px/1.28 var(--disp); margin: 10px 0 12px; }
.article-codebook .tcard p { font-size: 15px; line-height: 1.62; color: var(--ink2); margin-bottom: 14px; }
.article-codebook .tfoot { margin-top: auto; padding-top: 12px; border-top: 1px solid var(--line2); font-size: 14px; line-height: 1.55; color: var(--mut); }

/* coverage bar */
.article-codebook .cov { margin-top: 42px; }
.article-codebook .cov-lab { display: flex; justify-content: space-between; gap: 18px; font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); margin-bottom: 12px; }
.article-codebook .cov-lab b { color: var(--mut); font-weight: 500; }
.article-codebook .cov-bar { display: flex; min-height: 60px; gap: 2px; }
.article-codebook .cov-a { flex: 0 0 14%; min-width: 80px; background: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 600; }
.article-codebook .cov-b { flex: 1 1 64%; background: var(--ink); color: #fff; display: flex; align-items: center; gap: 14px; padding: 0 22px; }
.article-codebook .cov-b .big { font: 500 18px/1.2 var(--disp); color: #fff; white-space: nowrap; }
.article-codebook .cov-b .t { font-size: 14px; line-height: 1.4; color: #d5dee6; }
.article-codebook .cov-c { flex: 0 0 22%; background: #c7d0d7; color: var(--ink); display: flex; align-items: center; justify-content: center; text-align: center; padding: 0 14px; font-size: 14px; font-weight: 600; line-height: 1.4; }
.article-codebook .cov-note { font-size: 14px; line-height: 1.55; color: var(--mut); margin-top: 12px; }

/* range chart */
.article-codebook .chart-svg { width: 100%; height: auto; margin-top: 20px; }
.chart-svg text, .ex-fig text { font-family: var(--sans); }

/* legal grid and limits */
.article-codebook .legal { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; margin-top: 40px; }
.article-codebook .lcell { border-top: 1px solid var(--ink); padding-top: 18px; }
.article-codebook .lcell h3 { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }
.article-codebook .lcell p { font-size: 16px; line-height: 1.66; color: var(--ink2); }
.article-codebook .limits { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; margin-top: 40px; }
.article-codebook .lim { border-top: 1px solid var(--ink); padding-top: 18px; }
.article-codebook .lim .tg { margin-top: 0; }
.article-codebook .lim h3 { font: 500 19px/1.3 var(--disp); margin: 10px 0 11px; }
.article-codebook .lim p { font-size: 15px; line-height: 1.62; color: var(--ink2); }

/* worked examples */
.article-codebook .ex { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 48px; align-items: center; padding: 36px 0; margin-top: 20px; border-top: 1px solid var(--line); }
.article-codebook .ex-k { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); }
.article-codebook .ex-t { font: 500 25px/1.2 var(--disp); letter-spacing: -.025em; color: var(--ink); margin-top: 10px; }
.article-codebook .ex-p { font-size: 17px; line-height: 1.66; color: var(--ink2); margin-top: 14px; }
/* Figures read as part of a sentence, never as a display-size number over a caption (Sam, 2026-09-29). */
.article-codebook .ex-stat { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line2); font-size: 16px; line-height: 1.55; color: var(--ink2); }
.article-codebook .ex-stat .n { font-weight: 600; color: var(--ink); margin-right: .3em; }
.article-codebook .ex-fig { background: var(--surface); border: 1px solid var(--line); padding: 18px 18px 14px; }
.article-codebook .ex-fig .cap { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); margin-top: 10px; }

/* closing */
.article-codebook .close-p { font-size: 18px; line-height: 1.72; color: var(--ink2); margin-top: 18px; max-width: 760px; }
.article-codebook .close-pull { font: 500 clamp(28px, 3.4vw, 40px)/1.2 var(--disp); letter-spacing: -.03em; color: var(--ink); margin-top: 36px; max-width: 840px; }
.article-codebook .close-pull em { font-style: normal; color: var(--accent); }


/* =====================================================================================================
   THE UNREAD SAFETY SIGNAL
   ===================================================================================================== */
.article-safety { --usage: #2f5f8a; --quality: #8a6a2a; --safety: var(--accent); --sensor: #5b5f93; --driver: var(--risk); }
.article-safety .doc { max-width: none; background: none; border: 0; }
.article-safety .doc > :not(header):not(footer) { max-width: var(--wide); margin-inline: auto; padding-inline: var(--pad); }
.article-safety .trace { display: none; }
.article-safety .lede p { max-width: var(--read); }
.article-safety .lede p + p { margin-top: 18px; }
.article-safety .vs { padding-top: 64px; }

/* part divider */
.article-safety .part { display: flex; align-items: baseline; gap: 16px; padding-top: 110px !important; }
.article-safety .part .t { order: 1; font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); white-space: nowrap; }
.article-safety .part::after { content: ""; order: 2; flex: 1; height: 1px; background: var(--line); transform: translateY(-4px); }
.article-safety .part .n { order: 3; font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); white-space: nowrap; }

/* the insight map */
.article-safety .map { padding-top: 34px; }
.article-safety .map-h { font: 500 clamp(30px, 3.1vw, 40px)/1.14 var(--disp); letter-spacing: -.03em; color: var(--ink); max-width: 860px; text-wrap: balance; }
.article-safety .map-h em { font-style: normal; color: var(--accent); }
.article-safety .map-s { font-size: 18px; line-height: 1.65; color: var(--mut); margin-top: 18px; max-width: 760px; }
.article-safety .mapgrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 40px; margin-top: 48px; }
.article-safety .mcard { padding: 20px 0 24px; border-top: 1px solid var(--ink); min-width: 0; }
.article-safety .mc-h { display: flex; align-items: baseline; gap: 10px; font: 500 18px/1.3 var(--disp); letter-spacing: -.015em; color: var(--ink); }
.article-safety .mc-h .no { font: 500 13px/1 var(--disp); color: var(--mc, var(--mut)); letter-spacing: .02em; }
.article-safety .mc-h .ct { margin-left: auto; font: 500 13px/1 var(--disp); color: var(--mut); }
.article-safety .mcard.u { --mc: var(--usage); } .article-safety .mcard.q { --mc: var(--quality); } .article-safety .mcard.s { --mc: var(--safety); }
.article-safety .mcard.h { --mc: var(--sensor); } .article-safety .mcard.d { --mc: var(--driver); }
.article-safety .mcard ul { list-style: none; margin-top: 12px; }
.article-safety .mcard li { font-size: 15px; line-height: 1.4; color: var(--ink2); padding: 7px 0; border-top: 1px solid var(--line2); }
.article-safety .mcard li:first-child { border-top: 0; }
.article-safety .legend { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 24px; font-size: 14px; color: var(--mut); align-items: center; }
.article-safety .lens { display: inline-flex; align-items: center; gap: 7px; font: 500 12px/1 var(--disp); letter-spacing: .06em; text-transform: uppercase; color: var(--ink); margin: 0; }
.article-safety .lens::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: currentColor; }
.article-safety .lens.usage { color: var(--usage); } .article-safety .lens.quality { color: var(--quality); } .article-safety .lens.safety { color: var(--safety); }
.article-safety .lens.sensor { color: var(--sensor); } .article-safety .lens.driver { color: var(--driver); }

/* worked examples */
.article-safety .ex-wrap { display: grid; gap: 0; padding-top: 34px; }
.article-safety .ex { padding: 40px 0; border-top: 1px solid var(--line); min-width: 0; }
.article-safety .ex:first-child { border-top: 0; padding-top: 10px; }
.article-safety .ex-k { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); }
.article-safety .ex-t { font: 500 clamp(24px, 2.4vw, 30px)/1.2 var(--disp); letter-spacing: -.025em; color: var(--ink); margin-top: 10px; max-width: 820px; }
.article-safety .ex-p { font-size: 18px; line-height: 1.66; color: var(--ink2); margin-top: 16px; max-width: 760px; }
.article-safety .ex-stat { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line2); max-width: 760px; font-size: 16px; line-height: 1.55; color: var(--ink2); }
.article-safety .ex-stat .n { font-weight: 600; color: var(--ink); margin-right: .3em; }
.article-safety .chart { width: 100%; min-width: 0; }
.article-safety .article-chart-scroll .chart { min-width: 520px; }

/* what this runs on */
.article-safety .runson { margin-top: 96px; }
.article-safety .runson .rh { border-top: 1px solid var(--ink); padding-top: 26px; }
.article-safety .runson .rh { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; align-items: baseline; }   /* same split as the grid below */
.article-safety .runson .rh h2 { font: 500 26px/1.2 var(--disp); letter-spacing: -.025em; color: var(--ink); max-width: none; text-wrap: wrap; }
.article-safety .runson .rh p { font-size: 17px; line-height: 1.6; color: var(--mut); }
.article-safety .rgrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 40px; margin-top: 36px; }
.article-safety .rcell { border-top: 1px solid var(--line); padding-top: 16px; }
.article-safety .rcell h3 { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }
.article-safety .rcell p { font-size: 16px; line-height: 1.62; color: var(--ink2); }

/* grouped sections */
.article-safety .grp { padding-top: 96px; }
.article-safety .gh { margin-bottom: 18px; }
.article-safety .gh h2 { font-size: clamp(28px, 2.8vw, 36px); }
.article-safety .gh .cnt { display: inline-block; margin-top: 12px; font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); }
.article-safety table { width: 100%; border-collapse: collapse; }
.article-safety table.oem { border-top: 1px solid var(--ink); font-size: 15px; margin-top: 26px; min-width: 720px; }
.article-safety table.oem th { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); text-align: left; padding: 14px 18px 14px 0; border-bottom: 1px solid var(--line); }
.article-safety table.oem td { padding: 16px 18px 16px 0; border-bottom: 1px solid var(--line2); vertical-align: top; color: var(--ink2); }
.article-safety table.oem td.m { font: 400 13px/1.5 var(--mono); color: var(--ink2); overflow-wrap: anywhere; }
.article-safety .tiers { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; margin-top: 30px; }
.article-safety .tcard { padding-top: 18px; border-top: 1px solid var(--ink); min-width: 0; }
.article-safety .tcard .tg { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); }
.article-safety .tcard.t1 .tg { color: var(--accent); }
.article-safety .tcard h3 { font: 500 20px/1.28 var(--disp); color: var(--ink); margin: 10px 0 12px; }
.article-safety .tcard p { font-size: 15px; line-height: 1.62; color: var(--ink2); }
.article-safety section.grp:has(.srcnote) { padding-top: 40px; }
.article-safety footer { padding-inline: max(var(--pad), calc((100% - var(--wide)) / 2 + var(--pad))); }
.article-safety footer .logo { display: flex; width: max-content; }


/* =====================================================================================================
   THE RECALL SIGNAL GAP
   ===================================================================================================== */
.article-recall { --red: var(--risk); --muted: var(--mut); --green: var(--accent); --amber: #9a5f1f; --blue: #3d5a78; }
.article-recall .wrap { max-width: var(--wide); margin-inline: auto; padding-inline: var(--pad); }
.article-recall .kp { margin: 0; }

/* opener */
.article-recall .lead { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, .9fr); gap: 56px; align-items: start; padding-top: 80px; }
.article-recall .lead-body p { font-size: 20px; line-height: 1.65; color: var(--ink2); }
.article-recall .lead-body p.turn { margin-top: 18px; }
.article-recall .lead-stat { border-top: 1px solid var(--ink); padding-top: 20px; }
.article-recall .ls-lab { font: 500 21px/1.4 var(--disp); letter-spacing: -.015em; color: var(--ink); }
.article-recall .ls-lab b { color: var(--accent); }
.article-recall .ls-sub { font-size: 14px; line-height: 1.55; color: var(--mut); margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); }

/* callouts: thesis and method */
.article-recall .callout { margin-top: 56px; padding: 30px 34px; background: var(--surface); border: 1px solid var(--line); }
.article-recall .callout + .callout { margin-top: 16px; }
.article-recall .callout .tag { display: block; margin: 0; font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); }
.article-recall .callout.method .tag { color: var(--mut); }
.article-recall .callout p { font-size: 17px; line-height: 1.65; color: var(--ink2); margin-top: 12px; max-width: 860px; }
.article-recall .callout p.lead { display: block; padding: 0; font: 500 24px/1.3 var(--disp); letter-spacing: -.02em; color: var(--ink); margin-top: 8px; }

/* part bar and section heads */
.article-recall .partbar { display: flex; align-items: baseline; gap: 16px; margin-top: 110px; font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); }
.article-recall .partbar > :last-child { order: 3; color: var(--mut); }
.article-recall .partbar::after { content: ""; order: 2; flex: 1; height: 1px; background: var(--line); transform: translateY(-4px); }
.article-recall .h2row { margin-top: 64px; }
.article-recall .h2row h2 { display: flex; gap: 10px; align-items: baseline; font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); max-width: none; }
.article-recall .h2row h2 .no { color: var(--mut); }
.article-recall .big { font: 500 clamp(28px, 2.9vw, 38px)/1.16 var(--disp); letter-spacing: -.03em; color: var(--ink); margin-top: 12px; max-width: 880px; text-wrap: balance; }
.article-recall .big :is(.am, .rd) { color: var(--risk); }
.article-recall .big .gr { color: var(--accent); }
.article-recall .h2row .lede { font-size: 18px; line-height: 1.65; color: var(--mut); margin-top: 16px; max-width: 760px; padding: 0; }

/* panels and charts */
.article-recall .grid2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; margin-top: 32px; }
.article-recall .grid2.wide { max-width: none; padding-inline: 0; }   /* same 1fr 1fr split as every two-up row; not the page .wide container */   /* not the page .wide container */
.article-recall .panel { background: var(--surface); border: 1px solid var(--line); padding: 26px 28px 22px; min-width: 0; }
.article-recall .kp > .panel, .article-recall .wrap > .panel { margin-top: 20px; }
.article-recall .panel .pt { font: 500 19px/1.3 var(--disp); letter-spacing: -.015em; color: var(--ink); }
.article-recall .panel .ps { font-size: 15px; line-height: 1.5; color: var(--mut); margin-top: 6px; }
.article-recall .panel .ph { margin-bottom: 12px; }
.article-recall .panel > p { font-size: 16px; line-height: 1.62; color: var(--ink2); }
.article-recall .hint { font-size: 13px; line-height: 1.55; color: var(--mut); margin-top: 12px; }
.article-recall .chip { display: inline-flex; align-items: baseline; gap: 8px; margin-top: 14px; padding: 8px 12px; background: var(--accent-soft); color: var(--accent); font-size: 14px; font-weight: 600; }

/* tables */
.article-recall table { width: 100%; border-collapse: collapse; font-size: 15px; border-top: 1px solid var(--ink); }
.article-recall th { font: 500 12px/1.5 var(--disp); letter-spacing: .06em; text-transform: uppercase; color: var(--mut); text-align: left; padding: 12px 14px 12px 0; border-bottom: 1px solid var(--line); background: none; }
.article-recall td { padding: 12px 14px 12px 0; border-bottom: 1px solid var(--line2); vertical-align: middle; color: var(--ink2); }
.article-recall td.num { font-size: 15px; text-align: right; font-variant-numeric: tabular-nums; color: var(--ink); }
.article-recall tr.hi td { background: var(--accent-soft); }
.article-recall .table-scroll { overflow-x: auto; }
.article-recall .pill { display: inline-block; font: 500 12px/1.4 var(--disp); letter-spacing: .04em; padding: 2px 8px; border: 1px solid currentColor; }
.article-recall .pill.l1 { color: var(--accent); } .article-recall .pill.l2 { color: var(--blue); } .article-recall .pill.l3 { color: var(--mut); }
.article-recall .dbar { display: inline-block; height: 8px; background: var(--risk); vertical-align: middle; margin-left: 8px; }
.article-recall .levers td .h { font: 500 11px/1.4 var(--disp); letter-spacing: .06em; text-transform: uppercase; white-space: nowrap; }
.article-recall .h.hard { color: var(--accent); } .article-recall .h.pool { color: var(--blue); } .article-recall .h.mod { color: var(--amber); }

/* pull stats */
.article-recall .pullstat { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line); max-width: 760px; font: 500 21px/1.35 var(--disp); letter-spacing: -.015em; color: var(--ink); }
.article-recall .pullstat :is(.pn, .pq) { display: inline; font: inherit; letter-spacing: inherit; }
.article-recall .pullstat .pn { margin-right: .3em; }
.article-recall .pullstat.rd .pn, .article-recall .pullstat.am .pn { color: var(--risk); }
.article-recall .pullstat.gr .pn { color: var(--accent); }

/* three levels */
.article-recall .levels { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; margin-top: 32px; }
.article-recall .lvl { padding-top: 20px; border-top: 1px solid var(--ink); min-width: 0; }
.article-recall .lvl .tg { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); }
.article-recall .lvl.l1 .tg { color: var(--accent); }
.article-recall .lvl h3 { font: 500 21px/1.28 var(--disp); margin: 8px 0 4px; }
.article-recall .lvl .req { font-size: 14px; color: var(--mut); margin-bottom: 14px; }
.article-recall .lvl .hl { font: 500 17px/1.35 var(--disp); color: var(--ink); margin-bottom: 8px; font-variant-numeric: tabular-nums; }
.article-recall .lvl p { font-size: 15px; line-height: 1.6; color: var(--ink2); }
.article-recall .lvl ul { list-style: none; margin-top: 12px; display: grid; gap: 8px; }
.article-recall .lvl li { font-size: 14.5px; line-height: 1.45; color: var(--ink2); padding-left: 14px; position: relative; }
.article-recall .lvl li::before { content: ""; position: absolute; left: 0; top: .6em; width: 5px; height: 5px; border-radius: 50%; background: var(--faint); }
.article-recall .lvl.l1 li::before { background: var(--accent); }

/* value model */
.article-recall .vmodel { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 32px; }
.article-recall .vmgroup { background: var(--surface); border: 1px solid var(--line); padding: 26px 28px; min-width: 0; }
.article-recall .vmhead { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.article-recall .vmhead .t { font: 500 20px/1.3 var(--disp); color: var(--ink); }
.article-recall .vmhead .k { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--mut); white-space: nowrap; }
.article-recall .vmgroup.upside .vmhead .k { color: var(--accent); }
.article-recall .vmgroup > .sub { font-size: 15px; line-height: 1.5; color: var(--mut); margin: 8px 0 14px; }
.article-recall .vmitem { padding: 14px 0; border-top: 1px solid var(--line2); }
.article-recall .vmitem .it { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; font: 500 16px/1.35 var(--disp); color: var(--ink); }
.article-recall .vmitem .it .v { font: 600 15px/1 var(--sans); color: var(--ink); white-space: nowrap; font-variant-numeric: tabular-nums; }
.article-recall .vmgroup.upside .vmitem .it .v { color: var(--accent); }
.article-recall .vmitem p { font-size: 15px; line-height: 1.55; color: var(--mut); margin-top: 6px; }

/* worked case */
.article-recall .casebox { margin-top: 32px; padding: 28px 30px; background: var(--surface); border: 1px solid var(--line); }
.article-recall .casebox .ct { font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.article-recall .casebox p { font-size: 16px; line-height: 1.62; color: var(--ink2); }
.article-recall .flow { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; margin-top: 22px; border-top: 1px solid var(--ink); }
.article-recall .step { padding: 14px 18px 4px 0; font-size: 14.5px; line-height: 1.5; color: var(--ink2); min-width: 0; }
.article-recall .step b { display: block; font: 500 12px/1.5 var(--disp); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); margin-bottom: 6px; }

/* methodology footnote and site footer */
.article-recall .foot { margin-top: 64px; padding-top: 22px; border-top: 1px solid var(--line); font-size: 14px; line-height: 1.8; color: var(--mut); }
.article-recall .foot b { color: var(--ink2); }
.article-recall .sitefoot-in { max-width: var(--wide); margin-inline: auto; padding-inline: var(--pad); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 18px; align-items: center; }
.article-recall .sf-brand { font: 700 19px/1 Manrope, Arial, sans-serif; color: var(--on-navy); text-decoration: none; letter-spacing: -.02em; }
.article-recall .sn-grad { background: linear-gradient(135deg, #39d98a, #4f87ff); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }   /* canonical logo */

/* ---------- responsive ---------- */
@media (max-width: 1100px) { .article-codebook .chart-svg { min-width: 860px; } .article-codebook .fig { overflow-x: auto; } }
@media (max-width: 900px) {
  .article-heading-layout { grid-template-columns: 1fr; gap: 32px; }
  .article-hero-image img { aspect-ratio: 16 / 9; }
  header.article-hero { padding: 40px 28px 48px; }
  .preview-nav-links { gap: 22px; }
  .preview-nav-links .preview-contact { display: none; }
  .srclist { grid-template-columns: 1fr; }
  .vs-grid, .article-codebook :is(.legal, .limits) { grid-template-columns: 1fr; }
  .article-codebook .tiers { grid-template-columns: 1fr; }
  .vs-col.l { border-right: 0; border-bottom: 1px solid var(--line); }
  .article-codebook .decode { grid-template-columns: 1fr; }
  .article-codebook .lay { grid-template-columns: 1fr; gap: 14px; }
  .article-codebook .lay .proto { text-align: left; }
  .article-codebook .lay.oemd { margin-left: 24px; }
  .article-codebook .ex { grid-template-columns: 1fr; gap: 26px; }
  .article-codebook .ex-fig { max-width: 380px; }
  .article-codebook .cov-bar { flex-direction: column; }
  .article-codebook :is(.cov-a, .cov-b, .cov-c) { flex: 1 1 auto; min-height: 48px; justify-content: flex-start; padding: 12px 16px; }
  .reads { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .article-recall :is(.lead, .grid2, .grid2.wide, .vmodel, .levels, .flow) { grid-template-columns: 1fr; }
  .article-recall .step { padding-right: 0; border-bottom: 1px solid var(--line2); padding-bottom: 12px; }
  .article-safety .mapgrid { grid-template-columns: 1fr 1fr; }
  .article-safety :is(.rgrid, .runson .rh) { grid-template-columns: 1fr; gap: 16px; }
  .article-safety .tiers { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  :root { --pad: 22px; }
  .article-safety .mapgrid { grid-template-columns: 1fr; }
  .article-safety .part { flex-wrap: wrap; row-gap: 6px; }
  .article-safety .part::after { display: none; }
  .preview-nav-inner { width: calc(100% - 44px); min-height: 71px; gap: 18px; }
  .preview-brand { font-size: 19px; }
  .preview-brand img { width: 29px; height: 29px; }
  .preview-nav-links { gap: 0; font-size: 14px; }
  .preview-nav-links .preview-section-link { display: none; }
  header.article-hero { padding: 32px 22px 40px; }
  .article-hero :is(.dek, .sub) { font-size: 17px; }
  .kicker { flex-wrap: wrap; row-gap: 6px; }
  .kicker::after { display: none; }
  .kicker .n { width: 100%; white-space: normal; }
  .lede p { font-size: 19px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print {
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }   /* keep the navy hero and its light text together */
  .preview-nav, .preview-skip { display: none; }
  h2, h3 { break-after: avoid; }
  .fig, .ex, .lay, .tcard, .lim, .lcell, .decode, .cov, .panel, .lvl, .vmgroup, .casebox, .mcard { break-inside: avoid; }
}