/* =============================================================================
   HiPerformance Culture · SDD · v13
   Single-file stylesheet. Sole owner of :root design tokens.
   Extracted from article-v13.html design bundle (Claude Design, May 2026).
   Drop into theme; enqueue via hpc-sdd-styles.php plugin.
   ========================================================================== */


  /* Scope: tokens apply only on v13-stamped posts (body.sdd-v13).
     Legacy multi-block posts keep magazine.css's :root tokens authoritative.
     Plugin adds body.sdd-v13 when post meta hpc_sdd_format = "v13". */
  body.sdd-v13 {
    --void: #0A0A0D;
    --surface: #15151A;
    --surface-elev: #1B1B22;
    --hairline: #232328;
    --hairline-strong: #2E2E36;
    --t1: #ECE4D6;
    --t2: #B8AC96;
    --t3: #756B5C;
    --t4: #5E564D;
    --ink-display: #F4ECDD;
    --maize: #FFCB05;
    --maize-rgb: 255, 203, 5;
    --cobalt: #3D7AFF;
    --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
    --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;

    /* Pillar palette — 10 HPC pillars */
    --c-bio:        #73B191;
    --c-flow:       #60A5FA;
    --c-dec:        #CCC06F;
    --c-habits:     #96A67A;
    --c-learn:      #988CB5;
    --c-identity:   #B88892;
    --c-lead:       #8898A0;
    --c-arena:      #C47358;
    --c-nutrition:  #A89F68;
    --c-connection: #C99BB4;

    /* Page accent (default = bio teal; overridden by body.pillar-* below) */
    --page-accent:       var(--c-bio);
    --page-accent-soft:  #8FC7A7;
    --page-accent-rgb:   115, 177, 145;
    --page-accent-muted: rgba(115, 177, 145, 0.30);
  }

  /* Pillar body classes — each rebinds --page-accent family */
  body.pillar-bio {
    --page-accent: var(--c-bio); --page-accent-soft: #8FC7A7;
    --page-accent-rgb: 115, 177, 145; --page-accent-muted: rgba(115, 177, 145, 0.30);
  }
  body.pillar-flow {
    --page-accent: var(--c-flow); --page-accent-soft: #8FC4FF;
    --page-accent-rgb: 96, 165, 250; --page-accent-muted: rgba(96, 165, 250, 0.30);
  }
  body.pillar-dec {
    --page-accent: var(--c-dec); --page-accent-soft: #DDD28A;
    --page-accent-rgb: 204, 192, 111; --page-accent-muted: rgba(204, 192, 111, 0.30);
  }
  body.pillar-habits {
    --page-accent: var(--c-habits); --page-accent-soft: #AAB88D;
    --page-accent-rgb: 150, 166, 122; --page-accent-muted: rgba(150, 166, 122, 0.30);
  }
  body.pillar-learn {
    --page-accent: var(--c-learn); --page-accent-soft: #A99FC7;
    --page-accent-rgb: 152, 140, 181; --page-accent-muted: rgba(152, 140, 181, 0.30);
  }
  body.pillar-identity {
    --page-accent: var(--c-identity); --page-accent-soft: #CCA0A8;
    --page-accent-rgb: 184, 136, 146; --page-accent-muted: rgba(184, 136, 146, 0.30);
  }
  body.pillar-lead {
    --page-accent: var(--c-lead); --page-accent-soft: #A2B0B7;
    --page-accent-rgb: 136, 152, 160; --page-accent-muted: rgba(136, 152, 160, 0.30);
  }
  body.pillar-arena {
    --page-accent: var(--c-arena); --page-accent-soft: #D6916C;
    --page-accent-rgb: 196, 115, 88; --page-accent-muted: rgba(196, 115, 88, 0.30);
  }
  body.pillar-nutrition {
    --page-accent: var(--c-nutrition); --page-accent-soft: #BBB182;
    --page-accent-rgb: 168, 159, 104; --page-accent-muted: rgba(168, 159, 104, 0.30);
  }
  body.pillar-connection {
    --page-accent: var(--c-connection); --page-accent-soft: #DAB4C5;
    --page-accent-rgb: 201, 155, 180; --page-accent-muted: rgba(201, 155, 180, 0.30);
  }

  /* Per-article maize override — multiple selectors for backward + forward compat.
     - .page-melatonin: existing live convention (Post 3577 has this class today)
     - .accent-maize:   forward-compatible class-based selector for plugin filter
     - [data-accent]:   test-fixture-friendly attribute selector */
  body.page-melatonin,
  body.accent-maize,
  body[data-accent="maize"] {
    --page-accent: var(--maize);
    --page-accent-soft: #FFE066;
    --page-accent-rgb: 255, 203, 5;
    --page-accent-muted: rgba(255, 203, 5, 0.30);
  }

  body {
    margin: 0;
    background: var(--void);
    color: var(--t1);
    font-family: var(--serif);
  }
  .mh-stage {
    width: 1440px;
    min-height: 1120px;
    position: relative;
    overflow: hidden;
    background: var(--void);
    color: var(--t1);
    font-family: var(--serif);
    box-sizing: border-box;
  }
  .mh-stage * { box-sizing: border-box; }

  /* =========================================================
     NYT-Magazine register · title overlaid on the hero photograph
     The photograph IS the masthead. Title + deck sit on top with a
     gradient scrim so type holds. Byline + caption below the plate.
     ========================================================= */

  .nyt {
    display: grid;
    grid-template-rows: auto auto auto;
    background: var(--void);
  }

  /* Hero plate · photograph as masthead background
     Default is the melatonin hero (relative to the CSS file location).
     Each article overrides via inline `style="--hero-image: url('...');"` on
     the .nyt__plate element. The fallback keeps the local design comp working
     and keeps the production default sane if --hero-image is unset. */
  .nyt__plate {
    position: relative;
    width: 100%;
    aspect-ratio: 1054 / 780;
    background-image: var(--hero-image, url("uploads/hero-clean.jpg"));
    background-size: cover;
    background-position: center;
    overflow: hidden;
  }
  /* The scrim on the masthead plate uses void in RGB — update the literal */
  .nyt__plate::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
      linear-gradient(95deg, rgba(10, 10, 13, 0.92) 0%, rgba(10, 10, 13, 0.74) 28%, rgba(10, 10, 13, 0.32) 56%, transparent 80%),
      linear-gradient(180deg, rgba(10, 10, 13, 0.65) 0%, transparent 30%, transparent 70%, rgba(10, 10, 13, 0.55) 100%);
  }
  .nyt__plate-inner {
    position: relative;
    z-index: 1;
    height: 100%;
    display: grid;
    grid-template-rows: auto 1fr auto;
    padding: 32px 56px 36px;
  }

  /* (1) Top strip — inverted to sit on the plate, mono caps */
  .nyt__strip {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 32px;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    font-family: var(--mono);
    font-weight: 500;
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: rgba(236, 228, 214, 0.72);
  }
  .nyt__strip-l { justify-self: start; }
  .nyt__strip-l strong { color: var(--ink-display); font-weight: 500; }
  .nyt__strip-c {
    justify-self: center;
    color: var(--page-accent);
    letter-spacing: 0.30em;
  }
  .nyt__strip-r { justify-self: end; }
  .nyt__strip-r strong { color: var(--ink-display); font-weight: 500; }

  /* (2,3,4) Kicker + title + deck — stacked, anchored bottom-left */
  .nyt__title-block {
    align-self: end;
    max-width: 720px;
  }
  .nyt__kicker {
    margin: 0 0 16px 0;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--page-accent);
  }
  .nyt__title {
    margin: 0;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 5.2rem;
    line-height: 1.04;
    letter-spacing: -0.018em;
    color: var(--ink-display);
    max-width: 18ch;
    text-wrap: balance;
    text-shadow: 0 2px 24px rgba(0, 0, 0, 0.55);
  }
  .nyt__title em {
    font-style: italic;
    font-weight: 500;
    color: var(--ink-display);
    background-image: linear-gradient(to top, var(--page-accent) 0, var(--page-accent) 3px, transparent 3px);
    background-repeat: no-repeat;
    background-position: 0 100%;
    background-size: 100% 100%;
    padding-bottom: 2px;
  }
  .nyt__deck {
    margin: 24px 0 0 0;
    font-family: var(--serif);
    font-weight: 400;
    font-style: italic;
    font-size: 1.35rem;
    line-height: 1.42;
    color: rgba(236, 228, 214, 0.92);
    max-width: 52ch;
    text-wrap: pretty;
    text-shadow: 0 1px 16px rgba(0, 0, 0, 0.55);
  }
  .nyt__deck em {
    font-style: italic;
    color: rgba(236, 228, 214, 0.72);
  }

  /* (5) Byline · hairline grid · NYT-Mag style (now 3 cells — no author) */
  .nyt__byline {
    margin: 24px 56px 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid var(--hairline-strong);
    border-bottom: 1px solid var(--hairline-strong);
    padding: 14px 0;
  }
  .nyt__byline > div {
    padding: 0 20px;
    border-left: 1px solid var(--hairline);
  }
  .nyt__byline > div:first-child { border-left: 0; padding-left: 0; }
  .nyt__byline dt {
    display: block;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t4);
    margin: 0 0 4px 0;
  }
  .nyt__byline dd {
    margin: 0;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 17px;
    color: var(--t1);
    line-height: 1.25;
  }
  .nyt__byline dd.mono {
    font-family: var(--mono);
    font-weight: 500;
    letter-spacing: 0.04em;
    font-size: 15px;
  }

  /* (7) Caption + credit · italic-serif descriptive + mono caps credit */
  .nyt__caption {
    margin: 18px 56px 56px;
  }
  .nyt__caption-text {
    font-family: var(--serif);
    font-weight: 400;
    font-style: italic;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--t1);
    margin: 0;
    max-width: 64ch;
  }
  .nyt__caption-credit {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    text-align: right;
    white-space: nowrap;
  }
  .nyt__caption-credit strong { color: var(--t1); font-weight: 500; }

  /* (1) Top strip · mono caps kicker / pillar / date — single horizontal line */
  .nyt__strip {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 32px;
    padding: 18px 56px;
    border-bottom: 1px solid var(--hairline-strong);
    font-family: var(--mono);
    font-weight: 500;
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
  }
  .nyt__strip-l { justify-self: start; }
  .nyt__strip-l strong { color: var(--t1); font-weight: 500; }
  .nyt__strip-c {
    justify-self: center;
    color: var(--page-accent);
    letter-spacing: 0.30em;
  }
  .nyt__strip-r { justify-self: end; }
  .nyt__strip-r strong { color: var(--t1); font-weight: 500; }

  /* (2) Kicker · the one phrase that names the article's lineage */
  .nyt__kicker {
    margin: 64px 0 0;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--page-accent);
  }

  /* (3) Title · 80px serif · tight leading · 2–3 lines · italic accent */
  .nyt__title {
    margin: 16px 0 0;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 5rem;            /* ~80px */
    line-height: 1.04;
    letter-spacing: -0.018em;
    color: var(--ink-display);
    max-width: 18ch;
    text-wrap: balance;
  }
  .nyt__title em {
    font-style: italic;
    font-weight: 500;
    color: var(--ink-display);  /* NYT: italic accent stays in ink, not coloured */
  }
  /* Single small chromatic gesture: the underline beneath the italic word
     in pillar-accent. Replaces the v6 "everything-in-maize" pattern with a
     single, restrained mark. */
  .nyt__title em {
    background-image: linear-gradient(to top, var(--page-accent) 0, var(--page-accent) 3px, transparent 3px);
    background-repeat: no-repeat;
    background-position: 0 100%;
    background-size: 100% 100%;
    padding-bottom: 2px;
  }

  /* (4) Deck · light-weight serif · 2–3 sentences · max ~50ch */
  .nyt__deck {
    margin: 28px 0 0;
    font-family: var(--serif);
    font-weight: 400;
    font-style: italic;
    font-size: 1.45rem;
    line-height: 1.42;
    color: var(--t1);
    max-width: 50ch;
    text-wrap: pretty;
  }
  .nyt__deck em {
    font-style: italic;
    color: var(--t2);
  }

  /* (5) Byline · hairline grid · 4 cells · NYT-Mag style */
  .nyt__byline {
    margin: 44px 56px 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border-top: 1px solid var(--hairline-strong);
    border-bottom: 1px solid var(--hairline-strong);
    padding: 14px 0;
  }
  .nyt__byline > div {
    padding: 0 20px;
    border-left: 1px solid var(--hairline);
  }
  .nyt__byline > div:first-child { border-left: 0; padding-left: 0; }
  .nyt__byline dt {
    display: block;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t4);
    margin: 0 0 4px 0;
  }
  .nyt__byline dd {
    margin: 0;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 17px;
    color: var(--t1);
    line-height: 1.25;
  }
  .nyt__byline dd.mono {
    font-family: var(--mono);
    font-weight: 500;
    letter-spacing: 0.04em;
    font-size: 15px;
  }

  /* (6) Hero · the photograph the user supplied. Full-bleed within the
        page max. Sits below the byline; caption beneath. */
  .nyt__hero {
    margin: 36px 0 0;
    position: relative;
    overflow: hidden;
    border-top: 1px solid var(--hairline-strong);
    border-bottom: 1px solid var(--hairline-strong);
  }
  .nyt__hero img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
  }

  /* (7) Caption · italic-serif descriptive · hairline rule */
  .nyt__caption {
    margin: 18px 56px 56px;
  }
  .nyt__caption-text {
    font-family: var(--serif);
    font-weight: 400;
    font-style: italic;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--t1);
    margin: 0;
    max-width: 64ch;
  }
  .nyt__caption-credit {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    text-align: right;
    white-space: nowrap;
  }
  .nyt__caption-credit strong { color: var(--t1); font-weight: 500; }


  .ch01 {
    padding: 80px 56px 64px;
    background: var(--void);
    display: grid;
    grid-template-rows: auto 1fr;
    gap: 56px;
  }

  /* Top band — chapter number, title, deck, hairline rule */
  .ch01__head {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 24px;
    align-items: baseline;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch01__num {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--page-accent);
    margin: 0;
    line-height: 1.4;
  }
  .ch01__title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 3.4rem;
    line-height: 1.06;
    letter-spacing: -0.018em;
    color: var(--ink-display);
    margin: 0;
    max-width: 22ch;
    text-wrap: balance;
  }
  .ch01__title em {
    font-style: italic;
    color: var(--ink-display);
    background-image: linear-gradient(to top, var(--page-accent) 0, var(--page-accent) 2px, transparent 2px);
    background-repeat: no-repeat;
    background-position: 0 100%;
    background-size: 100% 100%;
    padding-bottom: 2px;
  }

  /* Body — two columns: prose (wider) and asides (narrower).
     Matches the live article's column rhythm: 720 prose / 60 gutter / 225 aside. */
  .ch01__body {
    display: grid;
    grid-template-columns: minmax(0, 720px) 60px minmax(0, 225px);
    gap: 0;
    max-width: 1005px;
  }
  .ch01__main {
    grid-column: 1;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.18rem;
    line-height: 1.62;
    color: var(--t1);
  }
  .ch01__aside-col {
    grid-column: 3;
    display: flex;
    flex-direction: column;
    gap: 36px;
    padding-top: 4px;
  }

  /* Lead paragraph with drop-cap */
  .ch01__lead {
    margin: 0 0 28px 0;
    font-size: 1.32rem;
    line-height: 1.50;
    font-weight: 400;
    color: var(--t1);
  }
  .ch01__lead::first-letter {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 5rem;
    line-height: 0.85;
    float: left;
    margin: 0.06em 0.10em 0 -0.04em;
    color: var(--page-accent);
  }
  .ch01__lead em { font-style: italic; }

  /* Body paragraphs — NYT-style indented continuation */
  .ch01__main p {
    margin: 0 0 18px 0;
  }
  .ch01__main p + p {
    text-indent: 1.2em;
    margin-top: 0;
  }
  .ch01__main p + p.ch01__lead,
  .ch01__lead + p { text-indent: 0; }
  .ch01__main em { font-style: italic; }
  .ch01__main sup {
    font-family: var(--mono);
    font-size: 0.62em;
    letter-spacing: 0.04em;
    color: var(--page-accent);
    vertical-align: super;
    line-height: 0;
  }
  .ch01__main sup a {
    color: inherit;
    text-decoration: none;
  }

  /* Editorial pause — spans BOTH prose + aside columns,
     hairline-flanked mono-caps label centred on the full content width. */
  .ch01__pause {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin: 28px 0 36px 0;
  }
  .ch01__pause::before,
  .ch01__pause::after {
    content: "";
    height: 1px;
    flex: 1;
    background: var(--hairline);
  }
  .ch01__pause-label {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--t3);
    white-space: nowrap;
  }

  /* Margin notes — right column, italic serif, mono-caps label */
  .ch01__note {
    font-family: var(--serif);
    font-weight: 400;
    font-size: 0.94rem;
    line-height: 1.55;
    color: var(--t2);
    border-top: 1px solid var(--hairline);
    padding-top: 14px;
  }
  .ch01__note-label {
    display: block;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--page-accent);
    margin: 0 0 8px 0;
  }
  .ch01__note p {
    margin: 0;
    font-style: italic;
  }
  .ch01__note p strong {
    font-style: normal;
    color: var(--t1);
    font-weight: 500;
  }


  .ch02 {
    padding: 80px 56px 64px;
    background: var(--void);
    display: grid;
    grid-template-rows: auto auto 1fr;
    gap: 56px;
  }

  /* Header: chapter number + title, hairline rule */
  .ch02__head {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 24px;
    align-items: baseline;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch02__num {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--page-accent);
    margin: 0;
    line-height: 1.4;
  }
  .ch02__title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 3.4rem;
    line-height: 1.06;
    letter-spacing: -0.018em;
    color: var(--ink-display);
    margin: 0;
    max-width: 22ch;
    text-wrap: balance;
  }
  .ch02__title em {
    font-style: italic;
    color: var(--page-accent);
  }

  /* Epigraph — sits between gate and first prose, italic, narrow measure */
  .ch02__epigraph {
    max-width: 700px;
    margin: -20px 100px 0 124px;
    padding: 0 0 18px 0;
    border-bottom: 1px solid var(--hairline);
  }
  .ch02__epigraph blockquote {
    margin: 0 0 12px 0;
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: 1.3rem;
    line-height: 1.45;
    color: var(--t2);
    text-wrap: pretty;
  }
  .ch02__epigraph cite {
    font-family: var(--mono);
    font-weight: 500;
    font-style: normal;
    font-size: 11px;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--t3);
  }

  /* Two-column body — same rhythm as ch01: 720 / 60 / 225 */
  .ch02__body {
    display: grid;
    grid-template-columns: minmax(0, 720px) 60px minmax(0, 225px);
    gap: 0;
    max-width: 1005px;
  }
  .ch02__main {
    grid-column: 1;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.18rem;
    line-height: 1.62;
    color: var(--t1);
  }
  .ch02__aside-col {
    grid-column: 3;
    display: flex;
    flex-direction: column;
    gap: 36px;
    padding-top: 4px;
  }

  .ch02__main p { margin: 0 0 18px 0; }
  .ch02__main p + p { text-indent: 1.2em; margin-top: 0; }
  .ch02__main p.ch02__after-figure { text-indent: 0; }
  .ch02__main em { font-style: italic; }
  .ch02__main sup {
    font-family: var(--mono);
    font-size: 0.62em;
    letter-spacing: 0.04em;
    color: var(--page-accent);
    vertical-align: super;
    line-height: 0;
  }
  .ch02__main sup a { color: inherit; text-decoration: none; }

  /* Margin notes — italic serif, mono-caps label in maize */
  .ch02__note {
    font-family: var(--serif);
    font-weight: 400;
    font-size: 0.94rem;
    line-height: 1.55;
    color: var(--t2);
    border-top: 1px solid var(--hairline);
    padding-top: 14px;
  }
  .ch02__note-label {
    display: block;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--page-accent);
    margin: 0 0 8px 0;
  }
  .ch02__note p { margin: 0; font-style: italic; }
  .ch02__note p strong { font-style: normal; color: var(--t1); font-weight: 500; }

  /* Figure — signal-chain diagram, full content width, hairline-framed */
  .ch02__figure {
    grid-column: 1 / -1;
    margin: 32px 0 24px;
    padding: 28px 32px 22px;
    border-top: 1px solid var(--hairline-strong);
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch02__figure svg {
    display: block;
    width: 100%;
    height: auto;
    max-height: 220px;
  }
  .ch02__figure-caption {
    margin: 16px 0 0 0;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 32px;
    align-items: baseline;
  }
  .ch02__figure-caption p {
    margin: 0;
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--t2);
    max-width: 60ch;
  }
  .ch02__figure-credit {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    white-space: nowrap;
  }
  .ch02__figure-credit strong { color: var(--t1); font-weight: 500; }

  /* Diagram styles (SVG) — hairline strokes, mono labels */
  .ch02-dia .stroke   { stroke: var(--t3); stroke-width: 1; fill: none; }
  .ch02-dia .strong   { stroke: var(--ink-display); stroke-width: 1.5; fill: none; }
  .ch02-dia .fill     { fill: var(--t2); }
  .ch02-dia .fill-bg  { fill: var(--surface); }
  .ch02-dia .label    { font-family: var(--mono); font-size: 11px; letter-spacing: 0.20em; text-transform: uppercase; fill: var(--t1); font-weight: 500; }
  .ch02-dia .gloss    { font-family: var(--serif); font-style: italic; font-size: 13px; fill: var(--t3); }
  .ch02-dia .step     { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; fill: var(--page-accent); font-weight: 500; }


  .ch04 {
    padding: 80px 56px 64px;
    background: var(--void);
    display: grid;
    grid-template-rows: auto auto auto;
    gap: 48px;
  }

  /* Header band */
  .ch04__head {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 24px;
    align-items: baseline;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch04__num {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--page-accent);
    margin: 0;
    line-height: 1.4;
  }
  .ch04__title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 3.4rem;
    line-height: 1.06;
    letter-spacing: -0.018em;
    color: var(--ink-display);
    margin: 0;
    max-width: 22ch;
    text-wrap: balance;
  }
  .ch04__title em {
    font-style: italic;
    color: var(--page-accent);
  }

  /* Intro — single wide paragraph, italic clause */
  .ch04__intro {
    max-width: 60ch;
    margin: 0 0 0 124px;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.28rem;
    line-height: 1.5;
    color: var(--t1);
  }
  .ch04__intro em { font-style: italic; color: var(--t2); }

  /* 4-card grid — 2 × 2 */
  .ch04__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border-top: 1px solid var(--hairline-strong);
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch04__card {
    padding: 32px 36px;
    border-right: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
  }
  .ch04__card:nth-child(2n) { border-right: 0; }
  .ch04__card:nth-last-child(-n+2) { border-bottom: 0; }

  /* Card head: system number + kicker */
  .ch04__card-head {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 18px;
    align-items: baseline;
  }
  .ch04__card-num {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 2.4rem;
    line-height: 1;
    color: var(--page-accent);
    letter-spacing: -0.020em;
  }
  .ch04__card-kicker {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    line-height: 1.4;
  }
  .ch04__card-kicker strong { color: var(--t1); font-weight: 500; }

  .ch04__card-contested {
    display: inline-block;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 10px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--cobalt);
    border: 1px solid var(--cobalt);
    padding: 3px 8px;
    margin-top: 6px;
  }

  .ch04__card-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.45rem;
    line-height: 1.18;
    letter-spacing: -0.010em;
    color: var(--ink-display);
    margin: 0;
    max-width: 28ch;
    text-wrap: balance;
  }
  .ch04__card-title em { font-style: italic; }

  .ch04__card-body {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.02rem;
    line-height: 1.55;
    color: var(--t1);
    margin: 0;
  }
  .ch04__card-body em { font-style: italic; }
  .ch04__card-body code {
    font-family: var(--mono);
    font-size: 0.92em;
    color: var(--page-accent);
    font-weight: 500;
  }
  .ch04__card-body sup {
    font-family: var(--mono);
    font-size: 0.62em;
    letter-spacing: 0.04em;
    color: var(--page-accent);
    vertical-align: super;
    line-height: 0;
  }
  .ch04__card-body sup a { color: inherit; text-decoration: none; }

  /* Pull-stat inside the card */
  .ch04__card-pull {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 16px;
    align-items: baseline;
    padding: 16px 0 0;
    border-top: 1px solid var(--hairline);
    margin-top: 4px;
  }
  .ch04__card-pull-num {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 2.6rem;
    line-height: 1;
    letter-spacing: -0.025em;
    color: var(--page-accent);
  }
  .ch04__card-pull-lbl {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
    line-height: 1.5;
  }

  /* In-practice note */
  .ch04__card-practice {
    margin-top: 4px;
    padding-top: 14px;
    border-top: 1px solid var(--hairline);
  }
  .ch04__card-practice-label {
    display: block;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--cobalt);
    margin: 0 0 6px 0;
  }
  .ch04__card-practice-body {
    margin: 0;
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--t2);
  }


  .ch03 {
    padding: 80px 56px 64px;
    background: var(--void);
    display: grid;
    grid-template-rows: auto auto auto auto auto;
    gap: 56px;
  }
  .ch03__head {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 24px;
    align-items: baseline;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch03__num {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--page-accent);
    margin: 0;
  }
  .ch03__title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 3.4rem;
    line-height: 1.06;
    letter-spacing: -0.018em;
    color: var(--ink-display);
    margin: 0;
    max-width: 22ch;
    text-wrap: balance;
  }
  .ch03__title em { font-style: italic; color: var(--page-accent); }

  /* Rubric — 5 weighted criteria, hairline grid */
  .ch03__rubric {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    border-top: 1px solid var(--hairline-strong);
    border-bottom: 1px solid var(--hairline-strong);
    padding: 16px 0;
  }
  .ch03__rubric-cell {
    padding: 0 20px;
    border-left: 1px solid var(--hairline);
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: relative;
  }
  .ch03__rubric-cell:first-child { border-left: 0; padding-left: 0; }
  .ch03__rubric-num {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    color: var(--t4);
  }
  .ch03__rubric-label {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.1rem;
    color: var(--ink-display);
  }
  .ch03__rubric-gloss {
    font-family: var(--serif);
    font-style: italic;
    font-size: 0.88rem;
    line-height: 1.45;
    color: var(--t3);
  }
  .ch03__rubric-weight {
    position: absolute;
    top: 0; right: 20px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: var(--page-accent);
    font-weight: 500;
  }

  /* Rank-1 hero study */
  .ch03__hero {
    display: grid;
    grid-template-columns: 60px 1fr 220px;
    gap: 32px;
    padding: 32px 36px;
    background: var(--surface);
    border-left: 3px solid var(--page-accent);
  }
  .ch03__hero-rank {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 2.8rem;
    line-height: 1;
    color: var(--page-accent);
    letter-spacing: -0.020em;
  }
  .ch03__hero-rank small {
    display: block;
    margin-top: 8px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--cobalt);
    font-weight: 500;
  }
  .ch03__hero-main {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .ch03__hero-title {
    margin: 0;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.55rem;
    line-height: 1.2;
    color: var(--ink-display);
    max-width: 36ch;
    text-wrap: balance;
  }
  .ch03__hero-meta {
    display: flex;
    gap: 18px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
    flex-wrap: wrap;
  }
  .ch03__hero-meta strong { color: var(--t1); font-weight: 500; }
  .ch03__hero-finding-lbl {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t4);
    margin: 6px 0 2px;
    display: block;
  }
  .ch03__hero-finding {
    margin: 0;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.05rem;
    line-height: 1.55;
    color: var(--t1);
  }
  .ch03__hero-finding em { font-style: italic; }
  .ch03__hero-finding code {
    font-family: var(--mono);
    color: var(--page-accent);
    font-size: 0.92em;
    font-weight: 500;
  }
  /* Score grid — 5 stat cells + total */
  .ch03__hero-score {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .ch03__hero-score-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    align-items: baseline;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
  }
  .ch03__hero-score-bar {
    grid-column: 1 / -1;
    height: 2px;
    background: var(--hairline);
    position: relative;
    margin-top: -4px;
  }
  .ch03__hero-score-bar::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: var(--w);
    background: var(--page-accent);
  }
  .ch03__hero-score-val {
    font-family: var(--mono);
    color: var(--t1);
    font-weight: 500;
  }
  .ch03__hero-score-val small { color: var(--t3); font-weight: 500; }
  .ch03__hero-total {
    margin-top: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--hairline-strong);
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    gap: 12px;
  }
  .ch03__hero-total-lbl {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
  }
  .ch03__hero-total-num {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 2.4rem;
    line-height: 1;
    color: var(--page-accent);
    letter-spacing: -0.020em;
  }
  .ch03__hero-total-num small {
    font-family: var(--mono);
    font-size: 14px;
    color: var(--t3);
    font-weight: 500;
  }

  /* Forest plot — hairline grammar, interactive caption */
  .ch03__forest {
    margin: 0;
  }
  .ch03__forest-head {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    gap: 24px;
    padding-bottom: 18px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch03__forest-kicker {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--cobalt);
    margin: 0 0 6px 0;
  }
  .ch03__forest-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.6rem;
    line-height: 1.2;
    color: var(--ink-display);
    margin: 0;
    max-width: 28ch;
  }
  .ch03__forest-title em { font-style: italic; }
  .ch03__forest-prompt {
    font-family: var(--serif);
    font-style: italic;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--t2);
    text-align: right;
    max-width: 28ch;
    margin: 0;
  }
  .ch03__forest svg {
    display: block;
    width: 100%;
    height: auto;
    max-height: 380px;
  }
  .ch03__forest .fp-axis    { stroke: var(--t4); stroke-width: 1; }
  .ch03__forest .fp-null    { stroke: var(--t3); stroke-width: 1; }
  .ch03__forest .fp-pool    { stroke: var(--page-accent); stroke-width: 1.5; stroke-dasharray: 6 4; }
  .ch03__forest .fp-thresh  { stroke: var(--cobalt); stroke-width: 1; stroke-dasharray: 1 4; }
  .ch03__forest .fp-whisk   { stroke: var(--t2); stroke-width: 1; }
  .ch03__forest .fp-point   { fill: var(--t1); }
  .ch03__forest .fp-point--hero { fill: var(--page-accent); }
  .ch03__forest .fp-row-label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; fill: var(--t2); font-weight: 500; }
  .ch03__forest .fp-row-label--strong { fill: var(--ink-display); }
  .ch03__forest .fp-axis-num { font-family: var(--mono); font-size: 10px; letter-spacing: 0.10em; fill: var(--t3); }
  .ch03__forest .fp-axis-label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase; fill: var(--t3); }
  .ch03__forest .fp-pool-label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase; fill: var(--page-accent); font-weight: 500; }
  .ch03__forest .fp-gloss { font-family: var(--serif); font-style: italic; font-size: 13px; fill: var(--t3); }

  /* Supporting studies — small 2x3 grid */
  .ch03__support {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid var(--hairline-strong);
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch03__support-card {
    padding: 22px 24px;
    border-right: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .ch03__support-card:nth-child(3n) { border-right: 0; }
  .ch03__support-card:nth-last-child(-n+3) { border-bottom: 0; }
  .ch03__support-rank {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    gap: 12px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
  }
  .ch03__support-rank strong { color: var(--page-accent); font-weight: 500; }
  .ch03__support-score {
    color: var(--ink-display);
    font-weight: 500;
  }
  .ch03__support-score small { color: var(--t3); }
  .ch03__support-authors {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1rem;
    color: var(--ink-display);
    margin: 0;
  }
  .ch03__support-jrnl {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    margin: 0;
    display: flex;
    gap: 12px;
  }
  .ch03__support-title {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: 0.95rem;
    line-height: 1.4;
    color: var(--t1);
    margin: 0;
  }
  .ch03__support-finding {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--t2);
    margin: 0;
  }
  .ch03__support-finding code {
    font-family: var(--mono);
    color: var(--page-accent);
    font-weight: 500;
  }


  /* Shared scaffolding for the 3 variations — same restraint, same palette */
  .ch3v {
    background: var(--void);
    box-sizing: border-box;
    color: var(--t1);
    font-family: var(--serif);
  }
  .ch3v * { box-sizing: border-box; }
  .ch3v__head {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 24px;
    align-items: baseline;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch3v__num {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--page-accent);
    margin: 0;
  }
  .ch3v__title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 3.4rem;
    line-height: 1.06;
    letter-spacing: -0.018em;
    color: var(--ink-display);
    margin: 0;
    max-width: 22ch;
    text-wrap: balance;
  }
  .ch3v__title em { font-style: italic; color: var(--page-accent); }
  .ch3v__kicker {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 12px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--cobalt);
    margin: 0 0 8px 0;
  }

  /* ============================================================ */
  /* V1 · NUMBER-FORWARD — lead with the 7-minute headline           */
  /* ============================================================ */
  .ch3a {
    padding: 80px 56px 64px;
    display: grid;
    grid-template-rows: auto auto auto auto;
    gap: 48px;
  }
  .ch3a__hero {
    display: grid;
    grid-template-columns: 1fr 460px;
    gap: 64px;
    align-items: end;
    padding: 24px 0 32px;
  }
  .ch3a__hero-num {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 14rem;
    line-height: 0.86;
    letter-spacing: -0.045em;
    color: var(--page-accent);
    margin: 0;
  }
  .ch3a__hero-num small {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 1.6rem;
    letter-spacing: 0.04em;
    color: var(--t2);
    text-transform: lowercase;
    margin-left: 0.2em;
  }
  .ch3a__hero-side {
    display: flex;
    flex-direction: column;
    gap: 18px;
  }
  .ch3a__hero-claim {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.85rem;
    line-height: 1.18;
    color: var(--ink-display);
    margin: 0;
    max-width: 22ch;
    text-wrap: balance;
  }
  .ch3a__hero-claim em { font-style: italic; color: var(--page-accent); }
  .ch3a__hero-meta {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    line-height: 1.6;
    margin: 0;
  }
  .ch3a__hero-meta strong { color: var(--t1); font-weight: 500; }
  /* Plain-English explainer beneath the headline */
  .ch3a__plain {
    background: var(--surface);
    border-left: 3px solid var(--cobalt);
    padding: 24px 32px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .ch3a__plain-cell h4 {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--cobalt);
    margin: 0 0 8px 0;
  }
  .ch3a__plain-cell p {
    margin: 0;
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.1rem;
    line-height: 1.5;
    color: var(--t1);
  }
  .ch3a__plain-cell p strong { font-style: normal; color: var(--page-accent); font-weight: 500; }
  /* Scale strip: 0 → 7 → 20 (consumer threshold) — visualise how small 7 is */
  .ch3a__scale {
    padding: 24px 0;
    border-top: 1px solid var(--hairline-strong);
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch3a__scale-label {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    margin: 0 0 16px 0;
  }
  .ch3a__scale-bar {
    position: relative;
    height: 12px;
    background: var(--hairline);
    border-radius: 0;
    margin-bottom: 10px;
  }
  .ch3a__scale-fill {
    position: absolute;
    inset: 0 auto 0 0;
    width: 35%; /* 7 / 20 */
    background: var(--page-accent);
  }
  .ch3a__scale-tick {
    position: absolute;
    top: -8px;
    bottom: -8px;
    width: 1px;
    background: var(--ink-display);
  }
  .ch3a__scale-tick--threshold { background: var(--cobalt); }
  .ch3a__scale-ticks-row {
    position: relative;
    height: 24px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
  }
  .ch3a__scale-ticks-row span {
    position: absolute;
    transform: translateX(-50%);
    top: 4px;
    white-space: nowrap;
  }
  .ch3a__scale-ticks-row span strong { color: var(--page-accent); font-weight: 500; }
  .ch3a__scale-ticks-row span.cobalt strong { color: var(--cobalt); }
  /* Distribution strip: 7 studies in a compact band */
  .ch3a__dist {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 32px;
    align-items: start;
  }
  .ch3a__dist-left h3 {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.5rem;
    line-height: 1.15;
    color: var(--ink-display);
    margin: 0 0 10px 0;
  }
  .ch3a__dist-left p {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--t2);
    margin: 0;
  }
  .ch3a__dist-plot {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .ch3a__dist-row {
    display: grid;
    grid-template-columns: 180px 1fr 80px;
    gap: 16px;
    align-items: center;
    padding: 8px 0;
    border-top: 1px solid var(--hairline);
  }
  .ch3a__dist-row:first-child { border-top: 0; }
  .ch3a__dist-row-author {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t2);
  }
  .ch3a__dist-row-author strong { color: var(--ink-display); font-weight: 500; }
  .ch3a__dist-row-bar {
    position: relative;
    height: 14px;
  }
  .ch3a__dist-row-bar::before {
    /* null line */
    content: "";
    position: absolute;
    top: 0; bottom: 0;
    left: 90%;
    width: 1px;
    background: var(--t3);
  }
  .ch3a__dist-row-bar-whisk {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    height: 1px;
    background: var(--t2);
  }
  .ch3a__dist-row-bar-point {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--t1);
  }
  .ch3a__dist-row-bar-point--hero { background: var(--page-accent); }
  .ch3a__dist-row-effect {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.04em;
    color: var(--ink-display);
    font-weight: 500;
    text-align: right;
  }
  .ch3a__dist-row-effect.hero { color: var(--page-accent); }

  /* ============================================================ */
  /* V2 · WALKTHROUGH — numbered argument sections                  */
  /* ============================================================ */
  .ch3b {
    padding: 80px 56px 64px;
    display: grid;
    grid-template-rows: auto auto;
    gap: 48px;
  }
  .ch3b__sections {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
  }
  .ch3b__section {
    display: grid;
    grid-template-columns: 200px 1fr 380px;
    gap: 48px;
    padding: 40px 0;
    border-top: 1px solid var(--hairline-strong);
  }
  .ch3b__section:last-child { border-bottom: 1px solid var(--hairline-strong); }
  .ch3b__section-num {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 5rem;
    line-height: 1;
    color: var(--page-accent);
    letter-spacing: -0.030em;
    margin: 0;
  }
  .ch3b__section-num small {
    display: block;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    margin-top: 8px;
  }
  .ch3b__section-body {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .ch3b__section-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.75rem;
    line-height: 1.18;
    letter-spacing: -0.012em;
    color: var(--ink-display);
    margin: 0;
    max-width: 28ch;
    text-wrap: balance;
  }
  .ch3b__section-title em { font-style: italic; color: var(--page-accent); }
  .ch3b__section-prose {
    font-family: var(--serif);
    font-size: 1.05rem;
    line-height: 1.55;
    color: var(--t1);
    margin: 0;
    max-width: 56ch;
  }
  .ch3b__section-prose em { font-style: italic; }
  .ch3b__section-prose code {
    font-family: var(--mono);
    color: var(--page-accent);
    font-weight: 500;
  }
  .ch3b__section-data {
    border-left: 1px solid var(--hairline-strong);
    padding-left: 32px;
  }
  .ch3b__data-lbl {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    margin: 0 0 12px 0;
  }
  .ch3b__data-num {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 3rem;
    line-height: 0.95;
    color: var(--page-accent);
    letter-spacing: -0.020em;
    margin: 0 0 14px 0;
  }
  .ch3b__data-num small {
    font-family: var(--mono);
    font-size: 14px;
    color: var(--t3);
    font-weight: 500;
  }
  .ch3b__data-note {
    font-family: var(--serif);
    font-style: italic;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--t2);
    margin: 0;
  }
  /* mini-rubric inside section 2 */
  .ch3b__rubric-mini {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 8px;
  }
  .ch3b__rubric-mini-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    align-items: baseline;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t2);
    padding-bottom: 6px;
    border-bottom: 1px solid var(--hairline);
  }
  .ch3b__rubric-mini-row:last-child { border-bottom: 0; }
  .ch3b__rubric-mini-row strong { color: var(--page-accent); font-weight: 500; }

  /* ============================================================ */
  /* V3 · EDITORIAL SPREAD — forest plot dominates, prose argument left */
  /* ============================================================ */
  .ch3c {
    padding: 80px 56px 64px;
    display: grid;
    grid-template-rows: auto 1fr;
    gap: 56px;
  }
  .ch3c__spread {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 64px;
    align-items: start;
  }
  .ch3c__left {
    display: flex;
    flex-direction: column;
    gap: 28px;
  }
  .ch3c__intro {
    font-family: var(--serif);
    font-size: 1.18rem;
    line-height: 1.6;
    color: var(--t1);
    margin: 0;
  }
  .ch3c__intro em { font-style: italic; }
  .ch3c__intro code {
    font-family: var(--mono);
    color: var(--page-accent);
    font-weight: 500;
  }
  .ch3c__pull {
    border-top: 2px solid var(--page-accent);
    border-bottom: 1px solid var(--hairline-strong);
    padding: 20px 0;
    margin: 0;
  }
  .ch3c__pull blockquote {
    margin: 0 0 10px 0;
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: 1.5rem;
    line-height: 1.18;
    letter-spacing: -0.012em;
    color: var(--ink-display);
    text-wrap: balance;
  }
  .ch3c__pull blockquote em { color: var(--page-accent); }
  .ch3c__pull cite {
    font-family: var(--mono);
    font-style: normal;
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
  }
  .ch3c__anchor {
    background: var(--surface);
    border-left: 3px solid var(--cobalt);
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .ch3c__anchor-lbl {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--cobalt);
    margin: 0;
  }
  .ch3c__anchor-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.15rem;
    line-height: 1.25;
    color: var(--ink-display);
    margin: 0;
  }
  .ch3c__anchor-meta {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
    margin: 4px 0 0 0;
  }
  .ch3c__anchor-meta strong { color: var(--t1); font-weight: 500; }
  .ch3c__anchor-num {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 2.6rem;
    line-height: 1;
    color: var(--page-accent);
    letter-spacing: -0.020em;
    margin: 6px 0 0 0;
  }
  .ch3c__anchor-num small { font-family: var(--mono); font-size: 13px; color: var(--t3); font-weight: 500; }

  /* Right: forest plot at scale */
  .ch3c__right { padding-top: 4px; }
  .ch3c__plot-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding-bottom: 14px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch3c__plot-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.4rem;
    line-height: 1.2;
    color: var(--ink-display);
    margin: 0;
    max-width: 38ch;
    text-wrap: balance;
  }
  .ch3c__plot-title em { font-style: italic; color: var(--page-accent); }
  .ch3c__plot-prompt {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--cobalt);
    margin: 0;
  }
  .ch3c__plot svg {
    display: block;
    width: 100%;
    height: auto;
    max-height: 480px;
  }
  .ch3c__plot .fp-axis    { stroke: var(--t4); stroke-width: 1; }
  .ch3c__plot .fp-null    { stroke: var(--t3); stroke-width: 1; }
  .ch3c__plot .fp-pool    { stroke: var(--page-accent); stroke-width: 1.5; stroke-dasharray: 6 4; }
  .ch3c__plot .fp-thresh  { stroke: var(--cobalt); stroke-width: 1; stroke-dasharray: 1 4; }
  .ch3c__plot .fp-whisk   { stroke: var(--t2); stroke-width: 1; }
  .ch3c__plot .fp-point   { fill: var(--t1); }
  .ch3c__plot .fp-point--hero { fill: var(--page-accent); }
  .ch3c__plot .fp-label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; fill: var(--t2); font-weight: 500; }
  .ch3c__plot .fp-label--strong { fill: var(--ink-display); }
  .ch3c__plot .fp-num   { font-family: var(--mono); font-size: 10px; fill: var(--t3); }
  .ch3c__plot .fp-tag   { font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase; fill: var(--page-accent); font-weight: 500; }
  .ch3c__plot .fp-callout { font-family: var(--serif); font-style: italic; font-size: 13px; fill: var(--t2); }
  .ch3c__plot-key {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
    padding-top: 18px;
    margin-top: 18px;
    border-top: 1px solid var(--hairline);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
  }
  .ch3c__plot-key span { display: inline-flex; align-items: center; gap: 8px; }
  .ch3c__plot-key i {
    display: inline-block;
    width: 18px; height: 2px;
    font-style: normal;
  }
  .ch3c__plot-key i.dot { width: 9px; height: 9px; border-radius: 50%; }
  .ch3c__plot-key i.dot-hero { background: var(--page-accent); }
  .ch3c__plot-key i.dot-other { background: var(--t1); }
  .ch3c__plot-key i.line-pool { background: var(--page-accent); }
  .ch3c__plot-key i.line-thresh { background: var(--cobalt); }
  .ch3c__plot-key i.line-null { background: var(--t3); }


  /* Reuses ch3v scaffolding (head, kicker) and ch3b sections.
     Adds a high-level results spread beneath the walkthrough. */

  /* Section break between walkthrough and results */
  .ch3f__break {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 24px;
    margin: 24px 0 48px;
  }
  .ch3f__break::before,
  .ch3f__break::after {
    content: "";
    height: 1px;
    background: var(--hairline-strong);
  }
  .ch3f__break-label {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.40em;
    text-transform: uppercase;
    color: var(--page-accent);
  }

  /* Results header band */
  .ch3f__results-head {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: end;
    padding-bottom: 24px;
    margin-bottom: 48px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch3f__results-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 2.6rem;
    line-height: 1.08;
    color: var(--ink-display);
    margin: 0;
    max-width: 22ch;
    text-wrap: balance;
  }
  .ch3f__results-title em { font-style: italic; color: var(--page-accent); }
  .ch3f__results-deck {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.1rem;
    line-height: 1.5;
    color: var(--t2);
    margin: 0;
    max-width: 48ch;
  }
  .ch3f__results-deck strong { color: var(--ink-display); font-style: normal; font-weight: 500; }

  /* Hero anchor study (Rank 1) — monumental */
  .ch3f__anchor-banner {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 28px;
    background: var(--page-accent);
    color: var(--void);
    font-family: var(--mono);
    font-weight: 600;
    font-size: 12px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
  }
  .ch3f__anchor-banner > span:first-child { white-space: nowrap; }
  .ch3f__anchor-banner strong { font-weight: 600; }
  .ch3f__anchor-banner-sep {
    flex: 1;
    height: 1px;
    background: rgba(10, 10, 13, 0.30);
  }
  .ch3f__anchor-banner-meta { font-weight: 500; color: rgba(10, 10, 13, 0.78); letter-spacing: 0.22em; }
  .ch3f__hero {
    display: grid;
    grid-template-columns: 100px 1fr 360px;
    gap: 48px;
    padding: 44px 28px 40px;
    background: var(--surface);
    border-left: 3px solid var(--page-accent);
    border-right: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    margin-bottom: 64px;
  }
  @media (max-width: 1200px) {
    .ch3f__hero {
      grid-template-columns: 80px 1fr;
      gap: 32px;
    }
    .ch3f__hero-score {
      grid-column: 1 / -1;
      border-top: 1px solid var(--hairline);
      padding-top: 24px;
      margin-top: 8px;
    }
  }
  .ch3f__hero-rank {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 4.4rem;
    line-height: 1;
    color: var(--page-accent);
    letter-spacing: -0.030em;
    margin: 0;
  }
  .ch3f__hero-rank small {
    display: block;
    margin-top: 8px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--cobalt);
    font-weight: 500;
  }
  .ch3f__hero-main {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
  .ch3f__hero-title {
    margin: 0;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.85rem;
    line-height: 1.18;
    color: var(--ink-display);
    max-width: 36ch;
    text-wrap: balance;
  }
  .ch3f__hero-meta {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
  }
  .ch3f__hero-meta strong { color: var(--ink-display); font-weight: 500; }
  .ch3f__hero-finding {
    margin: 4px 0 0 0;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.1rem;
    line-height: 1.55;
    color: var(--t1);
  }
  .ch3f__hero-finding em { font-style: italic; }
  .ch3f__hero-finding code {
    font-family: var(--mono);
    color: var(--page-accent);
    font-size: 0.92em;
    font-weight: 500;
  }
  .ch3f__hero-plain {
    margin: 8px 0 0 0;
    padding-top: 16px;
    border-top: 1px solid var(--hairline);
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.02rem;
    line-height: 1.5;
    color: var(--t2);
  }
  .ch3f__hero-plain strong { font-style: normal; color: var(--ink-display); font-weight: 500; }
  .ch3f__hero-score {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .ch3f__hero-score-lbl {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    margin: 0 0 4px 0;
  }
  .ch3f__hero-score-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 16px;
    align-items: baseline;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t2);
  }
  .ch3f__hero-score-row strong { color: var(--ink-display); font-weight: 500; }
  .ch3f__hero-score-bar {
    height: 2px;
    background: var(--hairline);
    position: relative;
    margin: -6px 0 8px 0;
  }
  .ch3f__hero-score-bar::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: var(--w);
    background: var(--page-accent);
  }
  .ch3f__hero-total {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    gap: 12px;
    padding-top: 14px;
    margin-top: 6px;
    border-top: 1px solid var(--hairline-strong);
  }
  .ch3f__hero-total-lbl {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink-display);
  }
  .ch3f__hero-total-num {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 3rem;
    line-height: 1;
    color: var(--page-accent);
    letter-spacing: -0.020em;
  }
  .ch3f__hero-total-num small { font-family: var(--mono); font-size: 16px; color: var(--t3); font-weight: 500; }

  /* Forest plot at scale */
  .ch3f__plot {
    margin: 0 0 48px 0;
  }
  .ch3f__plot-head {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    gap: 24px;
    padding-bottom: 16px;
    margin-bottom: 28px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch3f__plot-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 2rem;
    line-height: 1.15;
    color: var(--ink-display);
    margin: 0;
    max-width: 32ch;
    text-wrap: balance;
  }
  .ch3f__plot-title em { font-style: italic; color: var(--page-accent); }
  .ch3f__plot-prompt {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--cobalt);
    text-align: right;
    max-width: 24ch;
    line-height: 1.6;
    margin: 0;
  }
  .ch3f__plot svg {
    display: block;
    width: 100%;
    height: auto;
    max-height: 560px;
  }
  .ch3f__plot .fp-axis    { stroke: var(--t4); stroke-width: 1; }
  .ch3f__plot .fp-null    { stroke: var(--t3); stroke-width: 1; }
  .ch3f__plot .fp-pool    { stroke: var(--page-accent); stroke-width: 2; stroke-dasharray: 8 5; }
  .ch3f__plot .fp-thresh  { stroke: var(--cobalt); stroke-width: 1.5; stroke-dasharray: 2 5; }
  .ch3f__plot .fp-whisk   { stroke: var(--t2); stroke-width: 1.5; }
  .ch3f__plot .fp-point   { fill: var(--t1); }
  .ch3f__plot .fp-point--hero { fill: var(--page-accent); }
  .ch3f__plot .fp-label { font-family: var(--mono); font-size: 13px; letter-spacing: 0.18em; text-transform: uppercase; fill: var(--t2); font-weight: 500; }
  .ch3f__plot .fp-label--strong { fill: var(--ink-display); }
  .ch3f__plot .fp-num   { font-family: var(--mono); font-size: 11px; fill: var(--t3); }
  .ch3f__plot .fp-tag-pool   { font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; fill: var(--page-accent); font-weight: 500; }
  .ch3f__plot .fp-tag-thresh { font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; fill: var(--cobalt); font-weight: 500; }
  .ch3f__plot .fp-tag-null   { font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; fill: var(--t3); font-weight: 500; }
  .ch3f__plot .fp-callout { font-family: var(--serif); font-style: italic; font-size: 14px; fill: var(--t3); }
  .ch3f__plot-key {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
    padding-top: 18px;
    margin-top: 18px;
    border-top: 1px solid var(--hairline);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
  }
  .ch3f__plot-key span { display: inline-flex; align-items: center; gap: 8px; }
  .ch3f__plot-key i {
    display: inline-block;
    width: 22px; height: 2px;
    font-style: normal;
  }
  .ch3f__plot-key i.dot { width: 10px; height: 10px; border-radius: 50%; }
  .ch3f__plot-key i.dot-hero { background: var(--page-accent); }
  .ch3f__plot-key i.dot-other { background: var(--t1); }
  .ch3f__plot-key i.line-pool { background: var(--page-accent); }
  .ch3f__plot-key i.line-thresh { background: var(--cobalt); }
  .ch3f__plot-key i.line-null { background: var(--t3); }

  /* Supporting studies — cascading list, one row per study */
  .ch3f__list {
    margin: 0 0 48px;
    border-top: 1px solid var(--hairline-strong);
  }
  .ch3f__list-head {
    display: grid;
    grid-template-columns: 80px 1fr 220px 1fr 80px;
    gap: 28px;
    align-items: baseline;
    padding: 14px 0;
    border-bottom: 1px solid var(--hairline);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t4);
  }
  .ch3f__list-row {
    display: grid;
    grid-template-columns: 80px 1fr 220px 1fr 80px;
    gap: 28px;
    align-items: baseline;
    padding: 22px 0;
    border-bottom: 1px solid var(--hairline);
  }
  .ch3f__list-rank {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.6rem;
    line-height: 1;
    color: var(--page-accent);
  }
  .ch3f__list-rank small {
    display: block;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    margin-top: 4px;
    font-weight: 500;
  }
  .ch3f__list-study {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  .ch3f__list-study-authors {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.1rem;
    color: var(--ink-display);
    margin: 0;
  }
  .ch3f__list-study-title {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: 0.95rem;
    line-height: 1.4;
    color: var(--t1);
    margin: 0;
  }
  .ch3f__list-meta {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
    line-height: 1.6;
  }
  .ch3f__list-meta strong { color: var(--t1); font-weight: 500; }
  .ch3f__list-finding {
    font-family: var(--serif);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--t1);
    margin: 0;
  }
  .ch3f__list-finding code {
    font-family: var(--mono);
    color: var(--page-accent);
    font-size: 0.92em;
    font-weight: 500;
  }
  .ch3f__list-score {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.6rem;
    line-height: 1;
    color: var(--ink-display);
    letter-spacing: -0.015em;
    text-align: right;
  }
  .ch3f__list-score small {
    display: block;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
    margin-top: 4px;
    font-weight: 500;
  }

  /* Negative-knowledge boxout */
  .ch3f__boxout {
    border-left: 3px solid var(--cobalt);
    background: var(--surface);
    padding: 36px 44px 40px;
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 56px;
    align-items: start;
  }
  .ch3f__boxout-label {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--cobalt);
    margin: 0;
    line-height: 1.5;
  }
  .ch3f__boxout-label small {
    display: block;
    margin-top: 14px;
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.1rem;
    letter-spacing: 0;
    text-transform: none;
    color: var(--t2);
    line-height: 1.4;
    font-weight: 400;
  }
  .ch3f__boxout-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 22px;
    counter-reset: boxitem;
  }
  .ch3f__boxout-list li {
    counter-increment: boxitem;
    position: relative;
    padding-left: 44px;
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.05rem;
    line-height: 1.55;
    color: var(--t1);
  }
  .ch3f__boxout-list li::before {
    content: counter(boxitem, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 0.4em;
    font-family: var(--mono);
    font-style: normal;
    font-size: 11px;
    letter-spacing: 0.18em;
    color: var(--cobalt);
    font-weight: 500;
  }
  .ch3f__boxout-list li strong { font-style: normal; color: var(--ink-display); font-weight: 500; }
  .ch3f__boxout-list li code { font-family: var(--mono); color: var(--page-accent); font-size: 0.92em; font-weight: 500; font-style: normal; }


  .ch05 {
    padding: 80px 56px 64px;
    background: var(--void);
    display: grid;
    grid-template-rows: auto auto auto auto auto;
    gap: 48px;
  }
  .ch05__head {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 24px;
    align-items: baseline;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch05__num {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--page-accent);
    margin: 0;
  }
  .ch05__title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 3.4rem;
    line-height: 1.06;
    letter-spacing: -0.018em;
    color: var(--ink-display);
    margin: 0;
    max-width: 22ch;
    text-wrap: balance;
  }
  .ch05__title em { font-style: italic; color: var(--page-accent); }

  .ch05__intro {
    max-width: 60ch;
    margin: 0 0 0 124px;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.28rem;
    line-height: 1.5;
    color: var(--t1);
  }
  .ch05__intro em { font-style: italic; color: var(--t2); }

  /* Clock diagram — 24h phase map, full content width */
  .ch05__clock {
    margin: 0;
    padding: 32px 0;
    border-top: 1px solid var(--hairline-strong);
    border-bottom: 1px solid var(--hairline-strong);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 64px;
    align-items: center;
  }
  .ch05__clock-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  .ch05__clock-kicker {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--cobalt);
    margin: 0;
  }
  .ch05__clock-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.85rem;
    line-height: 1.2;
    color: var(--ink-display);
    margin: 0;
    max-width: 22ch;
    text-wrap: balance;
  }
  .ch05__clock-title em { font-style: italic; color: var(--page-accent); }
  .ch05__clock-prose {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.02rem;
    line-height: 1.5;
    color: var(--t2);
    margin: 0;
    max-width: 44ch;
  }
  .ch05__clock-svg {
    width: 460px;
    height: 460px;
  }
  .ch05__clock-svg svg { display: block; width: 100%; height: auto; }
  .ch05-clk .ring     { fill: none; stroke: var(--t3); stroke-width: 1; }
  .ch05-clk .ring-in  { fill: none; stroke: var(--t4); stroke-width: 0.5; stroke-dasharray: 2 3; }
  .ch05-clk .tick     { stroke: var(--t3); stroke-width: 0.75; }
  .ch05-clk .hour-lbl { font-family: var(--mono); font-size: 12px; letter-spacing: 0.18em; fill: var(--t3); font-weight: 500; }
  .ch05-clk .sleep    { fill: none; stroke: var(--ink-display); stroke-width: 5; stroke-linecap: round; opacity: 0.9; }
  .ch05-clk .dlmo     { stroke: var(--cobalt); stroke-width: 1; stroke-dasharray: 2 3; }
  .ch05-clk .dlmo-lbl { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; fill: var(--cobalt); font-weight: 500; }
  .ch05-clk .step-peg { fill: var(--page-accent); stroke: var(--void); stroke-width: 2; }
  .ch05-clk .step-lbl { font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; fill: var(--ink-display); font-weight: 500; }
  .ch05-clk .step-time { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; fill: var(--page-accent); font-weight: 500; }
  .ch05-clk .centre   { font-family: var(--serif); font-style: italic; font-size: 14px; fill: var(--t2); }

  /* 4-step grid — 2 × 2 */
  .ch05__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border-top: 1px solid var(--hairline-strong);
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch05__step {
    padding: 36px;
    border-right: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
  .ch05__step:nth-child(2n) { border-right: 0; }
  .ch05__step:nth-last-child(-n+2) { border-bottom: 0; }
  .ch05__step-head {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 22px;
    align-items: baseline;
  }
  .ch05__step-num {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 2.6rem;
    line-height: 1;
    color: var(--page-accent);
    letter-spacing: -0.020em;
  }
  .ch05__step-time {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--cobalt);
    line-height: 1.45;
  }
  .ch05__step-time strong { color: var(--ink-display); font-weight: 500; }
  .ch05__step-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.45rem;
    line-height: 1.18;
    color: var(--ink-display);
    margin: 0;
    max-width: 28ch;
    text-wrap: balance;
  }
  .ch05__step-rule {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.02rem;
    line-height: 1.55;
    color: var(--t1);
    margin: 0;
  }
  .ch05__step-rule em { font-style: italic; }
  .ch05__step-rule code {
    font-family: var(--mono);
    color: var(--page-accent);
    font-size: 0.92em;
    font-weight: 500;
  }
  .ch05__step-why {
    margin-top: 2px;
    padding-top: 14px;
    border-top: 1px solid var(--hairline);
  }
  .ch05__step-why-label {
    display: block;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--cobalt);
    margin: 0 0 6px 0;
  }
  .ch05__step-why-body {
    margin: 0;
    font-family: var(--serif);
    font-style: italic;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--t2);
  }
  .ch05__step-pull {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 16px;
    align-items: baseline;
    padding: 14px 0 0;
    border-top: 1px solid var(--hairline);
  }
  .ch05__step-pull-num {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 2.4rem;
    line-height: 1;
    letter-spacing: -0.022em;
    color: var(--page-accent);
  }
  .ch05__step-pull-lbl {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
    line-height: 1.55;
    max-width: 24ch;
  }
  .ch05__step-mistake {
    margin-top: 2px;
    padding-top: 14px;
    border-top: 1px solid var(--hairline);
  }
  .ch05__step-mistake-label {
    display: block;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--error);
    margin: 0 0 6px 0;
  }
  .ch05__step-mistake-body {
    margin: 0;
    font-family: var(--serif);
    font-style: italic;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--t2);
  }

  /* Operational coda — single paragraph in cobalt-rule-left panel */
  .ch05__coda {
    background: var(--surface);
    border-left: 3px solid var(--cobalt);
    padding: 28px 36px;
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 32px;
    align-items: start;
  }
  .ch05__coda-label {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--cobalt);
    margin: 0;
  }
  .ch05__coda-body {
    margin: 0;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.1rem;
    line-height: 1.5;
    color: var(--t1);
  }
  .ch05__coda-body strong { color: var(--page-accent); font-weight: 500; }
  .ch05__coda-body em { font-style: italic; color: var(--t2); }


  .ch06 {
    padding: 72px 56px 56px;
    background: var(--void);
    display: grid;
    gap: 36px;
  }
  .ch06__head {
    display: grid;
    grid-template-columns: 140px 1fr 1fr;
    column-gap: 32px;
    row-gap: 24px;
    align-items: baseline;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch06__num {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--page-accent);
    margin: 0;
  }
  .ch06__title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 3.4rem;
    line-height: 1.06;
    letter-spacing: -0.018em;
    color: var(--ink-display);
    margin: 0;
    max-width: 22ch;
    text-wrap: balance;
  }
  .ch06__title em { font-style: italic; color: var(--page-accent); }

  /* Epigraph — nested in header, right column under title */
  .ch06__epigraph {
    grid-column: 3 / 4;
    grid-row: 1 / 3;
    align-self: end;
    padding: 0 0 6px 0;
    border-left: 1px solid var(--hairline);
    padding-left: 28px;
  }
  .ch06__epigraph blockquote {
    margin: 0 0 10px 0;
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.18rem;
    line-height: 1.4;
    color: var(--t2);
    text-wrap: balance;
  }
  .ch06__epigraph cite {
    font-family: var(--mono);
    font-style: normal;
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--t3);
  }

  /* Bottomline composite — statement (left) + summary (right) */
  .ch06__bottomline {
    border-top: 2px solid var(--page-accent);
    border-bottom: 1px solid var(--hairline-strong);
    padding: 28px 0;
    display: grid;
    grid-template-columns: 140px minmax(0, 1.7fr) minmax(0, 1fr);
    column-gap: 32px;
    align-items: start;
  }
  .ch06__bottomline-lbl {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--page-accent);
    margin: 6px 0 0 0;
  }
  .ch06__bottomline-body {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.75rem;
    line-height: 1.18;
    letter-spacing: -0.012em;
    color: var(--ink-display);
    margin: 0;
    max-width: 32ch;
    text-wrap: balance;
  }
  .ch06__bottomline-body em { font-style: italic; color: var(--page-accent); }
  .ch06__summary {
    margin: 4px 0 0 0;
    padding-left: 28px;
    border-left: 1px solid var(--hairline);
    font-family: var(--serif);
    font-weight: 400;
    font-style: italic;
    font-size: 1.1rem;
    line-height: 1.5;
    color: var(--t1);
    max-width: 36ch;
  }
  .ch06__summary em { font-style: italic; color: var(--page-accent); }

  /* Triad — 3 column hairline-divided grid */
  .ch06__triad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid var(--hairline-strong);
    border-bottom: 1px solid var(--hairline-strong);
  }
  .ch06__card {
    padding: 32px 28px 28px;
    border-right: 1px solid var(--hairline);
    display: grid;
    grid-template-rows: auto auto 1fr auto;
    gap: 16px;
  }
  .ch06__card:last-child { border-right: 0; }
  .ch06__card-label {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 14px;
    align-items: baseline;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
  }
  .ch06__card-label strong {
    font-family: var(--serif);
    font-size: 2.2rem;
    line-height: 1;
    color: var(--page-accent);
    letter-spacing: -0.022em;
    font-weight: 500;
  }
  .ch06__card-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.55rem;
    line-height: 1.15;
    letter-spacing: -0.012em;
    color: var(--ink-display);
    margin: 0;
    max-width: 22ch;
    text-wrap: balance;
    min-height: 2.3em;
  }
  .ch06__card-title em { font-style: italic; }
  .ch06__card-body {
    margin: 0;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.02rem;
    line-height: 1.55;
    color: var(--t1);
  }
  .ch06__card-body em { font-style: italic; color: var(--page-accent); }
  .ch06__card-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--hairline);
  }
  .ch06__card-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
  }
  .ch06__card-chip::before {
    content: "";
    width: 8px; height: 8px;
    border-radius: 50%;
    background: currentColor;
  }
  .ch06__card-chip--validated  { color: var(--success); }
  .ch06__card-chip--contested  { color: var(--evidence); }
  .ch06__card-chip--mechanistic { color: var(--cobalt); }

  /* Footer row: confidence (left) + end-of-article mark (right), one line */
  .ch06__footer {
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr) auto;
    column-gap: 32px;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--hairline);
  }
  .ch06__conf-lbl {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--t3);
    margin: 0;
  }
  .ch06__conf-row {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    column-gap: 20px;
  }
  .ch06__conf-scale {
    display: inline-flex;
    gap: 6px;
    margin: 0;
  }
  .ch06__conf-step {
    padding: 8px 14px;
    border: 1px solid var(--hairline);
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    text-align: center;
  }
  .ch06__conf-step.is-on {
    border-color: var(--page-accent);
    color: var(--page-accent);
    background: rgba(var(--page-accent-rgb), 0.08);
  }
  .ch06__conf-note {
    margin: 0;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
    line-height: 1.4;
  }
  .ch06__conf-note strong { color: var(--ink-display); font-weight: 500; }
  .ch06__end-mark {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 12px;
    letter-spacing: 0.40em;
    text-transform: uppercase;
    color: var(--page-accent);
    white-space: nowrap;
  }


  .navrail {
    width: 320px;
    height: 900px;
    background: var(--void);
    padding: 32px 24px 28px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    box-sizing: border-box;
    border-left: 1px solid var(--hairline-strong);
  }
  .navrail__label {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--t3);
    margin: 0 0 8px 0;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .navrail__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
  }
  .navrail__item {
    position: relative;
    padding: 12px 0 12px 24px;
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 14px;
    align-items: baseline;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
    border-bottom: 1px solid var(--hairline);
    cursor: pointer;
    transition: color 200ms, padding-left 200ms;
  }
  .navrail__item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 1px;
    background: var(--hairline);
    transition: width 200ms, background 200ms;
  }
  .navrail__item.is-past { color: var(--t2); }
  .navrail__item.is-past::before { background: var(--t3); }
  .navrail__item.is-active {
    color: var(--page-accent);
    padding-left: 24px;
  }
  .navrail__item.is-active::before {
    background: var(--page-accent);
    width: 14px;
  }
  .navrail__item-num { color: inherit; font-weight: 500; letter-spacing: 0.04em; }
  .navrail__item-label {
    color: inherit;
    font-family: var(--serif);
    font-style: normal;
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0;
    text-transform: none;
    line-height: 1.25;
  }
  .navrail__item.is-active .navrail__item-label { color: var(--ink-display); }
  .navrail__progress {
    margin-top: auto;
    padding-top: 18px;
    border-top: 1px solid var(--hairline-strong);
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    gap: 12px;
  }
  .navrail__progress-lbl {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
  }
  .navrail__progress-pct {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.8rem;
    line-height: 1;
    color: var(--page-accent);
    letter-spacing: -0.020em;
  }
  .navrail__progress-pct small {
    font-family: var(--mono);
    font-size: 13px;
    letter-spacing: 0.04em;
    color: var(--t3);
  }
  .navrail__progress-bar {
    grid-column: 1 / -1;
    height: 2px;
    background: var(--hairline);
    position: relative;
    margin-top: 4px;
  }
  .navrail__progress-bar::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 42%;
    background: var(--page-accent);
  }


  .biblio {
    padding: 80px 56px 80px;
    background: var(--void);
    display: grid;
    grid-template-rows: auto auto auto auto auto;
    gap: 40px;
  }
  .biblio__head {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 24px;
    align-items: baseline;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .biblio__num {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--page-accent);
    margin: 0;
  }
  .biblio__title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 3.4rem;
    line-height: 1.06;
    letter-spacing: -0.018em;
    color: var(--ink-display);
    margin: 0;
    max-width: 22ch;
    text-wrap: balance;
  }
  .biblio__title em { font-style: italic; color: var(--page-accent); }
  .biblio__title-count {
    font-family: var(--serif);
    font-weight: 500;
    color: var(--page-accent);
  }

  /* Selection method block */
  .biblio__selection {
    background: var(--surface);
    border-left: 3px solid var(--cobalt);
    padding: 22px 28px;
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 32px;
    align-items: start;
  }
  .biblio__selection-lbl {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.30em;
    text-transform: uppercase;
    color: var(--cobalt);
    margin: 0;
  }
  .biblio__selection-body {
    margin: 0;
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: 1.02rem;
    line-height: 1.55;
    color: var(--t1);
    max-width: 70ch;
  }
  .biblio__selection-body strong { font-style: normal; color: var(--ink-display); font-weight: 500; }

  /* Corpus stacked-bar */
  .biblio__corpus {
    padding: 24px 0;
    border-top: 1px solid var(--hairline-strong);
    border-bottom: 1px solid var(--hairline-strong);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 32px;
    align-items: center;
  }
  .biblio__corpus-bar {
    height: 10px;
    display: flex;
    overflow: hidden;
  }
  .biblio__corpus-bar > span { display: block; height: 100%; }
  .biblio__corpus-meta {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 12px;
    letter-spacing: 0.20em;
    text-transform: uppercase;
    color: var(--t3);
    white-space: nowrap;
  }
  .biblio__corpus-meta strong { color: var(--ink-display); font-weight: 500; }
  .biblio__corpus-legend {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    margin-top: 14px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
  }
  .biblio__corpus-legend > span { display: inline-flex; align-items: center; gap: 8px; }
  .biblio__corpus-legend i {
    width: 10px; height: 10px;
    font-style: normal;
    border-radius: 50%;
    display: inline-block;
  }
  .biblio__corpus-legend i.sq { border-radius: 0; }
  .biblio__corpus-legend strong { color: var(--ink-display); font-weight: 500; }

  /* Controls bar: search / filter / sort / collapse */
  .biblio__controls {
    display: grid;
    grid-template-columns: 320px 1fr auto auto;
    gap: 24px;
    align-items: center;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--hairline-strong);
  }
  .biblio__search {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 12px;
    align-items: center;
  }
  .biblio__search-lbl {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t4);
  }
  .biblio__search input {
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--hairline-strong);
    padding: 8px 0;
    color: var(--ink-display);
    font-family: var(--serif);
    font-style: italic;
    font-size: 1rem;
    outline: none;
    width: 100%;
  }
  .biblio__search input::placeholder { color: var(--t4); font-style: italic; }
  .biblio__filters {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    align-items: center;
  }
  .biblio__filter-lbl {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t4);
  }
  .biblio__chip {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
    background: transparent;
    border: 1px solid var(--hairline);
    padding: 6px 12px;
    cursor: pointer;
  }
  .biblio__chip.is-active {
    color: var(--page-accent);
    border-color: var(--page-accent);
    background: rgba(var(--page-accent-rgb), 0.06);
  }
  .biblio__chip-count {
    margin-left: 6px;
    color: var(--t4);
  }
  .biblio__chip.is-active .biblio__chip-count { color: var(--page-accent); }
  .biblio__sort {
    display: flex;
    gap: 8px;
    align-items: center;
    border-left: 1px solid var(--hairline);
    padding-left: 18px;
  }
  .biblio__sort-lbl {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t4);
  }
  .biblio__sort-btn {
    background: transparent;
    border: 0;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
    cursor: pointer;
    padding: 4px 6px;
  }
  .biblio__sort-btn.is-active { color: var(--ink-display); border-bottom: 1px solid var(--page-accent); }
  .biblio__collapse,
  .biblio__expand {
    background: transparent;
    border: 1px solid var(--hairline);
    color: var(--cobalt);
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    padding: 6px 14px;
    cursor: pointer;
  }
  .biblio__expand:hover { color: var(--page-accent); border-color: var(--page-accent); }

  /* Collapsed-by-default context; shown when entry is-expanded */
  .biblio__entry .biblio__entry-context { display: none; }
  .biblio__entry.is-expanded .biblio__entry-context { display: block; }
  .biblio__entry.is-hidden { display: none; }
  .biblio__empty {
    margin: 24px 0 0 0;
    padding: 18px 0;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    text-align: center;
    border-top: 1px solid var(--hairline);
  }
  .biblio__corpus-meta [data-biblio-count] { color: var(--page-accent); }

  /* Entry list */
  .biblio__list {
    list-style: none;
    margin: 0;
    padding: 0;
  }
  .biblio__entry {
    display: grid;
    grid-template-columns: 50px 90px 1fr auto;
    gap: 24px;
    align-items: baseline;
    padding: 22px 0;
    border-bottom: 1px solid var(--hairline);
  }
  .biblio__entry-num {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.20em;
    color: var(--t3);
  }
  .biblio__entry-type {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 10px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--t3);
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }
  .biblio__entry-type i {
    width: 9px; height: 9px;
    border-radius: 50%;
    display: inline-block;
    font-style: normal;
    flex-shrink: 0;
  }
  .biblio__entry-body {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4px;
    min-width: 0;
  }
  .biblio__entry-authors {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 1.05rem;
    line-height: 1.3;
    color: var(--ink-display);
    margin: 0;
  }
  .biblio__entry-authors-year {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 12px;
    letter-spacing: 0.18em;
    color: var(--page-accent);
    margin-left: 12px;
  }
  .biblio__entry-title {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: 1.02rem;
    line-height: 1.4;
    color: var(--t1);
    margin: 0;
  }
  .biblio__entry-meta {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--t3);
    margin: 4px 0 0 0;
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
  }
  .biblio__entry-meta strong { color: var(--t1); font-weight: 500; }
  .biblio__entry-context {
    margin: 8px 0 0 0;
    padding-top: 10px;
    border-top: 1px solid var(--hairline);
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--t2);
    max-width: 80ch;
  }
  .biblio__entry-context strong { font-style: normal; color: var(--ink-display); font-weight: 500; }
  .biblio__entry-doi {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--cobalt);
    text-decoration: none;
    white-space: nowrap;
  }
  .biblio__entry-doi:hover { color: var(--page-accent); }

  /* Type colours (ring/swatch) */
  .t-rct       { background: #E8B547; }
  .t-meta      { background: #3D7AFF; }
  .t-review    { background: transparent; box-shadow: inset 0 0 0 1px #B49AE6; }
  .t-cohort    { background: #6FCF97; }
  .t-journal   { background: var(--page-accent); }
  .t-book      { background: #E26B5E; }
  .t-chapter   { background: transparent; box-shadow: inset 0 0 0 1px #E26B5E; }



/* =========================================================
   COMPILATION LAYER · linear article page
   Strips the design-canvas chrome, lays out chapters in
   sequence, pins the nav rail on the right at desktop.
   ========================================================= */
html, body { margin: 0; padding: 0; background: var(--void); color: var(--t1); }
body {
  font-family: var(--serif);
}

/* Unified chapter title size — was 3.4rem inside each chapter style block,
   reduced to 2.6rem so titles read editorial-not-monumental. Exposed as a
   tweak variable so the panel can resize them live.
   Scoped to body.sdd-v13 so the tweak vars don't leak to legacy posts. */
body.sdd-v13 {
  --tweak-chapter-title: 2.6rem;
  --tweak-body-size: 1.18rem;
  --tweak-body-leading: 1.62;
}
.ch01__title,
.ch02__title,
.ch04__title,
.ch05__title,
.ch06__title,
.ch3v__title,
.biblio__title {
  font-size: var(--tweak-chapter-title) !important;
}
.ch01__main p,
.ch02__main p,
.ch04__card-body,
.ch05__step-rule,
.ch06__card-body,
.ch3b__section-prose,
.ch3f__hero-finding {
  font-size: var(--tweak-body-size);
  line-height: var(--tweak-body-leading);
}
.mh-stage {
  width: auto !important;
  height: auto !important;
  min-height: 0 !important;
  max-width: var(--page-max, 1440px);
  margin: 0 auto !important;
}

body.sdd-v13 { --page-max: 1440px; --rail-w: 280px; --rail-gap: 32px; }

.article {
  position: relative;
  max-width: var(--page-max);
  margin: 0 auto;
}
.article > section,
.article > header {
  scroll-margin-top: 24px;
}

/* Nav rail fixed right at desktop, hidden below 1100px */
@media (min-width: 1280px) {
  body { padding-right: calc(var(--rail-w) + var(--rail-gap)); }
  .article__rail {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--rail-w);
    height: 100vh;
    z-index: 30;
  }
  .article__rail .navrail {
    width: 100%;
    height: 100%;
  }
}
@media (max-width: 1279px) {
  .article__rail { display: none; }
}

/* Section breaks — soft hairline between chapters except masthead */
.article > section.chapter-break {
  border-top: 1px solid var(--hairline-strong);
}

/* On the live article each chapter's padding is already set inside its
   template. Keep them; no need to add anything else. */

/* Skip-to-content (a11y) */
.sdd-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--void);
  color: var(--page-accent);
  padding: 12px 16px;
  font-family: var(--mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 12px;
}
.sdd-skip:focus { left: 12px; top: 12px; outline: 1px solid var(--page-accent); }


/* =========================================================
   v10 · AUDIT PASS · spacing + alignment + type consistency
   ========================================================= */

/* --- 1 · Section vertical rhythm: consistent 96px gap between chapters --- */
.article > section.chapter-break {
  margin-top: 0;
  padding-top: 96px !important;
  /* Each chapter retains its 56px horizontal padding; vertical now consistent */
}
.article > section.chapter-break > .ch01__head,
.article > section.chapter-break > .ch02__head,
.article > section.chapter-break > .ch04__head,
.article > section.chapter-break > .ch05__head,
.article > section.chapter-break > .ch06__head,
.article > section.chapter-break .ch3v__head,
.article > section.chapter-break > .biblio__head {
  padding-bottom: 24px;
}

/* --- 2 · Chapter titles: prevent orphans, balance, tighter leading --- */
.ch01__title, .ch02__title, .ch04__title, .ch05__title, .ch06__title,
.ch3v__title, .biblio__title {
  text-wrap: balance;
  line-height: 1.08 !important;
  letter-spacing: -0.015em;
  margin-bottom: 0;
}

/* --- 3 · Masthead byline + caption: align to inner content padding --- */
.nyt__byline { margin: 32px 56px 0 !important; }
.nyt__caption { margin: 18px 56px 56px !important; }
.nyt__caption-text { max-width: 72ch; }

/* --- 4 · Section number column ("01 · Mechanism" etc) — consistent width --- */
.ch01__head, .ch02__head, .ch04__head, .ch05__head,
.biblio__head {
  grid-template-columns: 140px 1fr !important;
  align-items: baseline;
  gap: 32px;
}
.ch01__num, .ch02__num, .ch04__num, .ch05__num, .ch06__num,
.biblio__num {
  padding-top: 6px;
}

/* --- 5 · Intro paragraphs: consistent left-anchor at body column --- */
.ch04__intro, .ch05__intro {
  margin-left: 172px !important;
  max-width: 56ch;
}
.ch02__epigraph {
  margin: 8px 0 0 172px !important;
}

/* --- 6 · Pause labels (Ch01 editorial breaks): span the full body+aside width
       so the hairlines reach both columns rather than just the prose. --- */
.ch01__pause {
  grid-column: 1 / -1 !important;
  margin: 28px 0 32px 0;
}

/* --- 7 · Margin notes (asides): align top to the first body paragraph --- */
.ch01__aside-col, .ch02__aside-col { padding-top: 8px; }

/* --- 8 · Figure captions: consistent width, italic serif, hairline rule --- */
.ch02__figure { padding: 32px 0 24px !important; }
.ch02__figure-caption { margin: 20px 0 0 0; gap: 32px; }

/* --- 9 · Stake cards: align card numerals' baseline with the kicker --- */
.ch04__card-head { gap: 18px; }
.ch04__card-num { line-height: 0.92; }

/* --- 10 · Protocol clock: vertical centring fix --- */
.ch05__clock { align-items: center; padding: 36px 0 !important; }
.ch05__clock-body { padding-left: 0; }

/* --- 11 · Verdict triad: equal column heights, footer pinned --- */
.ch06__triad { align-items: stretch; }
.ch06__card { min-height: 320px; }

/* --- 12 · Bibliography entries: tighter horizontal columns at narrow widths --- */
@media (max-width: 1100px) {
  .biblio__entry { grid-template-columns: 40px 80px 1fr; gap: 18px; }
  .biblio__entry-doi { grid-column: 1 / -1; padding-left: 138px; padding-top: 6px; }
}

/* --- 13 · Nav rail: don't show items past the article end --- */
.article__rail .navrail { box-sizing: border-box; }

/* --- 14 · Mono caps: consistent letter-spacing across all small-caps labels --- */
.ch01__num, .ch02__num, .ch04__num, .ch05__num, .ch06__num, .biblio__num,
.ch3v__num {
  letter-spacing: 0.26em !important;
}

/* --- 15 · Drop-cap on Chapter 1 lead: tighter side bearing --- */
.ch01__lead::first-letter {
  margin: 0.04em 0.08em 0 -0.02em;
  padding-top: 0.02em;
}

/* --- 16 · Stake/protocol card hairlines: thinner, more discreet --- */
.ch04__card, .ch05__step { padding: 32px 32px !important; }
.ch04__grid, .ch05__grid {
  border-radius: 0;
}

/* --- 17 · Forest plot wrapping in committed Ch03: prevent overflow --- */
.ch3f__plot svg { overflow: visible; }

/* --- 18 · Tweaks panel polish (the live in-page panel) --- */
#tweaks-panel { font-feature-settings: "tnum" 1; }
#tweaks-panel input[type="range"] { accent-color: var(--page-accent); }

/* --- 19 · Chapter starts — large numeral + kicker, more obvious --- */
.chapter-num {
  display: flex !important;
  flex-direction: column !important;
  align-items: flex-start !important;
  gap: 6px !important;
  margin: 0 !important;
  padding-top: 0 !important;
  letter-spacing: normal !important;
  text-transform: none !important;
  font-size: initial !important;
  line-height: 1 !important;
}
.chapter-num__digit {
  font-family: var(--serif) !important;
  font-weight: 500;
  font-size: 5rem;
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--page-accent);
  font-style: normal;
  text-transform: none;
  font-feature-settings: "tnum" 1, "lnum" 1;
}
.chapter-num__label {
  font-family: var(--mono) !important;
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--t2);
  margin-top: 2px;
}
/* Top accent on each chapter break: short maize segment to mark the start */
.article > section.chapter-break {
  position: relative;
}
.article > section.chapter-break::before {
  content: "";
  position: absolute;
  top: -1px; /* sit on top of the hairline */
  left: 56px;
  width: 80px;
  height: 2px;
  background: var(--page-accent);
}
/* Masthead doesn't have a chapter break before it */
.article > header.chapter-break::before,
.article > section#masthead::before { display: none; }


/* =========================================================
   v12 · FINAL POLISH PASS
   ========================================================= */

/* --- Masthead strip: 2-column layout, brand left / date right --- */
.nyt__strip {
  grid-template-columns: 1fr 1fr !important;
  padding: 22px 56px !important;
  font-size: 11px !important;
  letter-spacing: 0.28em !important;
}
.nyt__strip-l, .nyt__strip-r {
  font-feature-settings: "tnum" 1, "lnum" 1;
}
.nyt__strip-r em {
  font-style: italic;
  letter-spacing: 0.18em;
  color: var(--t3);
  text-transform: lowercase;
}
.nyt__strip-l strong {
  letter-spacing: 0.34em;
  color: var(--page-accent) !important;
  font-weight: 500;
}

/* --- Masthead kicker: a touch more presence --- */
.nyt__kicker {
  letter-spacing: 0.30em !important;
  font-size: 12px !important;
}

/* --- Byline: tighter dt/dd rhythm, tabular numbers --- */
.nyt__byline dd {
  font-feature-settings: "tnum" 1, "lnum" 1;
  letter-spacing: -0.005em;
}
.nyt__byline dd.mono {
  letter-spacing: 0.04em;
}

/* --- Caption: drop the max-width restriction now that there's no credit
       on the right, let the italic line breathe to its natural measure --- */
.nyt__caption-text {
  max-width: 78ch !important;
  font-size: 1.05rem;
  line-height: 1.55;
}

/* --- Chapter title em underline: match across all chapters that use
       coloured em (was inconsistent — ch01 has underline, others don't).
       This is an intentional choice for ch01 only; we leave the others
       coloured. But ensure the maize em colour reads as a true accent —
       slightly cooler than pure --maize against pale ink. --- */

/* --- Drop-cap kerning fix on chapter 1 lead --- */
.ch01__lead::first-letter {
  margin-right: 0.06em !important;
}

/* --- Mechanism (ch02) signal-chain figure: tighter padding + caption --- */
.ch02__figure { padding: 28px 0 22px !important; }
.ch02__figure-caption {
  align-items: end !important;
  border-top: 1px solid var(--hairline);
  padding-top: 14px;
}

/* --- Evidence anchor banner: lighter weight, refined spacing --- */
.ch3f__anchor-banner {
  padding: 12px 32px !important;
  font-size: 11px !important;
  letter-spacing: 0.36em !important;
  font-weight: 500 !important;
}
.ch3f__anchor-banner-meta {
  letter-spacing: 0.20em !important;
  font-weight: 500;
}

/* --- Verdict end-mark: classic editorial sign-off, scaled down --- */
.ch06__end-mark {
  letter-spacing: 0.20em !important;
  font-size: 13px !important;
  color: var(--t2) !important;
  font-style: italic;
  font-family: var(--serif) !important;
  font-weight: 500;
  text-transform: none !important;
}

/* --- Bibliography corpus bar: stitched look, subtle separator --- */
.biblio__corpus-bar > span + span {
  margin-left: 1px;
}

/* --- Nav rail typography refinement: tighter, more inviting --- */
.navrail__label { letter-spacing: 0.32em; }
.navrail__item { letter-spacing: 0.22em; }
.navrail__item-label { letter-spacing: 0; }

/* --- Smooth scroll between chapters when nav rail clicked --- */
html { scroll-behavior: smooth; }

/* --- Sup citation refinement: avoid touching the line above --- */
.ch01__main sup, .ch02__main sup, .ch04__card-body sup {
  font-size: 0.58em !important;
  margin-left: 0.05em;
}

/* --- Tighten the article container's bottom rhythm --- */
.article > section:last-child { padding-bottom: 96px; }


/* =========================================================
   v13 · RESPONSIVE LAYER
   The article was authored at 1440px. Below, we collapse the
   multi-column grids and fluid-scale type so it reads on phones
   and tablets without losing the editorial register.
   Three breakpoints: 1100 (tablet), 720 (phone), 480 (small).
   ========================================================= */

/* ---- Fluid type (applies at all widths, clamps at large) ---- */
.nyt__title {
  font-size: clamp(2.2rem, 7.5vw, 5.2rem) !important;
  line-height: 1.05 !important;
}
.nyt__deck {
  font-size: clamp(1rem, 2.2vw, 1.45rem) !important;
  line-height: 1.45 !important;
}
.nyt__caption-text {
  font-size: clamp(0.95rem, 1.4vw, 1.05rem) !important;
}
.ch01__title, .ch02__title, .ch04__title, .ch05__title, .ch06__title,
.ch3v__title, .biblio__title {
  font-size: clamp(1.7rem, 4.6vw, var(--tweak-chapter-title, 2.6rem)) !important;
}
.ch01__lead { font-size: clamp(1.1rem, 2.4vw, 1.32rem); }
.ch01__main p, .ch02__main p,
.ch04__card-body, .ch05__step-rule,
.ch06__card-body, .ch3b__section-prose, .ch3f__hero-finding {
  font-size: clamp(1.02rem, 1.8vw, var(--tweak-body-size, 1.18rem));
}
.chapter-num__digit { font-size: clamp(3rem, 7vw, 5rem) !important; }
.ch04__card-title, .ch05__step-title, .ch06__card-title,
.ch3b__section-title, .ch3f__hero-title {
  font-size: clamp(1.2rem, 2.8vw, 1.55rem);
}
.ch3a__hero-num { font-size: clamp(5rem, 14vw, 14rem) !important; }

/* ---- TABLET · <= 1100px ---- */
@media (max-width: 1100px) {
  /* Container & padding */
  .mh-stage { width: 100% !important; min-height: 0 !important; }
  .ch01, .ch02, .ch04, .ch05, .ch06,
  .ch3v, .ch3b, .ch3a, .ch3c, .ch3f, .biblio,
  section.chapter-break {
    padding-left: 32px !important;
    padding-right: 32px !important;
  }

  /* Masthead plate breathes a little */
  .nyt__plate-inner { padding: 24px 32px 28px !important; }
  .nyt__strip { padding: 18px 32px !important; }
  .nyt__byline { margin: 24px 32px 0 !important; padding: 12px 0 !important; }
  .nyt__caption { margin: 14px 32px 40px !important; }

  /* Body grid: drop the right-side aside column at tablet width */
  .ch01__body, .ch02__body {
    grid-template-columns: minmax(0, 1fr) !important;
    max-width: 720px;
  }
  .ch01__aside-col, .ch02__aside-col {
    grid-column: 1 !important;
    flex-direction: row !important;
    flex-wrap: wrap !important;
    gap: 24px !important;
    margin-top: 8px;
  }
  .ch01__note, .ch02__note { flex: 1 1 280px; }

  /* Evidence walkthrough: drop the right data column to below prose */
  .ch3b__section {
    grid-template-columns: 120px 1fr !important;
    gap: 24px !important;
  }
  .ch3b__section-data {
    grid-column: 1 / -1 !important;
    border-left: 0 !important;
    border-top: 1px solid var(--hairline-strong);
    padding: 18px 0 0 0 !important;
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 24px;
    align-items: baseline;
  }
  .ch3b__data-lbl { margin: 0 !important; }
  .ch3b__data-num { margin: 0 !important; grid-column: 1; }
  .ch3b__data-note { grid-column: 2; margin: 0 !important; }

  /* Evidence anchor study: stack the score column below */
  .ch3f__hero {
    grid-template-columns: 80px 1fr !important;
    gap: 24px !important;
  }
  .ch3f__hero-score {
    grid-column: 1 / -1 !important;
    border-top: 1px solid var(--hairline-strong);
    padding-top: 24px;
    margin-top: 8px;
  }

  /* Forest plot becomes scrollable */
  .ch3f__plot svg, .ch03__forest svg, .ch3c__plot svg {
    min-width: 720px;
  }
  .ch3f__plot, .ch03__forest, .ch3c__plot {
    overflow-x: auto;
    overflow-y: visible;
    margin-left: -8px; margin-right: -8px;
    padding: 0 8px;
  }

  /* Biblio entry: tighter columns */
  .biblio__entry {
    grid-template-columns: 40px 80px 1fr;
    gap: 18px;
  }
  .biblio__entry-doi {
    grid-column: 1 / -1;
    padding-left: 138px;
    padding-top: 6px;
  }
  .biblio__corpus { grid-template-columns: 1fr !important; gap: 16px !important; }

  /* Stakes / Protocol: keep 2-col but trim padding */
  .ch04__card, .ch05__step { padding: 24px 24px !important; }

  /* Chapter head: shrink number column */
  .ch01__head, .ch02__head, .ch04__head, .ch05__head, .biblio__head {
    grid-template-columns: 100px 1fr !important;
    gap: 20px;
  }
  .ch04__intro, .ch05__intro { margin-left: 120px !important; }
  .ch02__epigraph { margin: 8px 0 0 120px !important; }

  /* Verdict: stack epigraph below title */
  .ch06__head {
    grid-template-columns: 100px 1fr !important;
    gap: 20px !important;
  }
  .ch06__epigraph {
    grid-column: 1 / -1 !important;
    grid-row: auto !important;
    border-left: 0 !important;
    border-top: 1px solid var(--hairline);
    padding: 16px 0 0 0 !important;
    margin-top: 12px;
  }
  .ch06__bottomline {
    grid-template-columns: 100px 1fr !important;
  }
  .ch06__summary {
    grid-column: 2 !important;
    border-left: 0 !important;
    border-top: 1px solid var(--hairline);
    padding: 16px 0 0 0 !important;
    margin-top: 4px;
  }
  .ch06__footer { grid-template-columns: 100px 1fr; gap: 16px; }
  .ch06__end-mark { grid-column: 1 / -1; text-align: center; padding-top: 8px; }

  /* Forest plot result-head: stack */
  .ch3f__results-head { grid-template-columns: 1fr !important; gap: 16px !important; }
  .ch3f__plot-head { grid-template-columns: 1fr !important; gap: 12px !important; }
  .ch3f__plot-prompt { text-align: left !important; }

  /* Boxout */
  .ch3f__boxout {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
    padding: 28px 24px !important;
  }

  /* Hero list rows: stack score */
  .ch3f__list-head { display: none !important; }
  .ch3f__list-row {
    grid-template-columns: 60px 1fr !important;
    gap: 18px !important;
  }
  .ch3f__list-row > .ch3f__list-meta { grid-column: 2; }
  .ch3f__list-row > .ch3f__list-finding { grid-column: 1 / -1; padding-top: 4px; }
  .ch3f__list-row > .ch3f__list-score { grid-column: 1 / -1; text-align: left; padding-top: 4px; }

  /* Clock figure */
  .ch05__clock { grid-template-columns: 1fr !important; gap: 32px !important; padding: 28px 0 !important; }
  .ch05__clock-svg { width: 100% !important; max-width: 400px; margin: 0 auto; }
  .ch05__coda { grid-template-columns: 1fr !important; gap: 16px !important; padding: 22px 24px !important; }

  /* Mechanism figure */
  .ch02__figure { padding: 24px 0 18px !important; }
  .ch02__figure-caption { grid-template-columns: 1fr !important; gap: 8px !important; }
  .ch02__figure-credit { text-align: left !important; }

  /* Biblio controls */
  .biblio__controls {
    grid-template-columns: 1fr !important;
    gap: 18px !important;
    padding-bottom: 14px;
  }
  .biblio__search { grid-template-columns: max-content 1fr; }
  .biblio__sort { border-left: 0 !important; padding-left: 0 !important; }
  .biblio__selection { grid-template-columns: 1fr !important; gap: 12px !important; }
}

/* ---- PHONE · <= 720px ---- */
@media (max-width: 720px) {
  /* Even tighter side padding */
  .ch01, .ch02, .ch04, .ch05, .ch06,
  .ch3v, .ch3b, .ch3a, .ch3c, .ch3f, .biblio,
  section.chapter-break {
    padding-left: 20px !important;
    padding-right: 20px !important;
    padding-top: 56px !important;
    padding-bottom: 48px !important;
    gap: 32px !important;
  }
  .article > section.chapter-break {
    padding-top: 56px !important;
  }
  .article > section.chapter-break::before { left: 20px !important; width: 56px !important; }

  /* Masthead plate */
  .nyt__plate-inner { padding: 18px 20px 24px !important; }
  .nyt__strip {
    grid-template-columns: 1fr !important;
    padding: 14px 20px !important;
    gap: 4px !important;
    font-size: 10px !important;
    letter-spacing: 0.20em !important;
    text-align: left;
  }
  .nyt__title-block { max-width: 100% !important; }
  .nyt__kicker { font-size: 10px !important; margin-bottom: 12px !important; }
  .nyt__deck { margin-top: 16px !important; }
  .nyt__byline {
    margin: 18px 20px 0 !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 12px 16px !important;
  }
  .nyt__byline > div { padding: 0 !important; border-left: 0 !important; }
  .nyt__byline > div:nth-child(3) { grid-column: 1 / -1; padding-top: 12px; border-top: 1px solid var(--hairline); }
  .nyt__caption { margin: 14px 20px 32px !important; }

  /* Chapter headers stack */
  .ch01__head, .ch02__head, .ch04__head, .ch05__head, .biblio__head,
  .ch06__head, .ch3v__head {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
  .chapter-num__digit { font-size: 3.2rem !important; line-height: 0.9 !important; }
  .chapter-num { flex-direction: row !important; align-items: baseline !important; gap: 14px !important; }
  .chapter-num__label { margin-top: 0 !important; }

  /* Intros & epigraphs lose their indent */
  .ch04__intro, .ch05__intro,
  .ch02__epigraph { margin-left: 0 !important; max-width: none !important; }

  /* Body prose: full width, no aside column */
  .ch01__body, .ch02__body {
    grid-template-columns: 1fr !important;
    max-width: none;
  }
  .ch01__aside-col, .ch02__aside-col {
    flex-direction: column !important;
    gap: 20px !important;
  }
  .ch01__lead::first-letter {
    font-size: 4rem !important;
    margin: 0.04em 0.08em 0 -0.02em !important;
  }

  /* Pause label */
  .ch01__pause { margin: 24px 0 28px 0 !important; }

  /* Evidence walkthrough: full stack */
  .ch3b__section {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
    padding: 32px 0 !important;
  }
  .ch3b__section-num { font-size: 3.2rem !important; }
  .ch3b__rubric-mini { gap: 8px; }

  /* Anchor banner */
  .ch3f__anchor-banner {
    flex-wrap: wrap;
    padding: 14px 20px !important;
    gap: 8px !important;
    letter-spacing: 0.24em !important;
    font-size: 10px !important;
  }
  .ch3f__anchor-banner-sep { display: none; }

  /* Anchor study card */
  .ch3f__hero {
    grid-template-columns: 1fr !important;
    padding: 24px 20px !important;
    gap: 20px !important;
  }
  .ch3f__hero-rank { font-size: 3.2rem !important; }
  .ch3f__hero-meta { gap: 10px !important; font-size: 10px !important; }

  /* Stakes 2-col → 1-col */
  .ch04__grid { grid-template-columns: 1fr !important; }
  .ch04__card {
    border-right: 0 !important;
    border-bottom: 1px solid var(--hairline) !important;
    padding: 24px 20px !important;
  }
  .ch04__card:last-child { border-bottom: 0 !important; }
  .ch04__card-num { font-size: 1.8rem !important; }
  .ch04__card-pull-num { font-size: 2rem !important; }

  /* Protocol grid → 1-col */
  .ch05__grid { grid-template-columns: 1fr !important; }
  .ch05__step {
    border-right: 0 !important;
    border-bottom: 1px solid var(--hairline) !important;
    padding: 24px 20px !important;
  }
  .ch05__step:last-child { border-bottom: 0 !important; }
  .ch05__step-num { font-size: 2rem !important; }
  .ch05__step-pull-num { font-size: 1.8rem !important; }

  /* Clock: smaller */
  .ch05__clock-svg { max-width: 320px; }

  /* Verdict triad → 1-col */
  .ch06__triad { grid-template-columns: 1fr !important; }
  .ch06__card {
    border-right: 0 !important;
    border-bottom: 1px solid var(--hairline) !important;
    min-height: 0 !important;
    padding: 24px 20px !important;
  }
  .ch06__card:last-child { border-bottom: 0 !important; }
  .ch06__bottomline {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
  .ch06__bottomline-body { font-size: 1.4rem !important; }
  .ch06__footer { grid-template-columns: 1fr !important; gap: 16px !important; }
  .ch06__conf-scale { flex-wrap: wrap; }

  /* Biblio */
  .biblio__entry {
    grid-template-columns: 32px 1fr !important;
    gap: 12px !important;
    padding: 18px 0 !important;
  }
  .biblio__entry-type { grid-column: 2; margin-top: -2px; }
  .biblio__entry-body { grid-column: 1 / -1; padding-top: 6px; }
  .biblio__entry-doi {
    grid-column: 1 / -1;
    padding-left: 0;
    padding-top: 6px;
  }
  .biblio__entry-authors-year { display: block; margin-left: 0 !important; margin-top: 2px; }
  .biblio__entry-meta { gap: 10px !important; }
  .biblio__filters { gap: 8px !important; }
  .biblio__chip { padding: 6px 10px !important; font-size: 10px !important; }
  .biblio__corpus-legend { gap: 14px !important; }

  /* Forest plot mobile: keep scroll but reduce min-width */
  .ch3f__plot svg, .ch03__forest svg, .ch3c__plot svg {
    min-width: 640px;
  }
  .ch3f__plot-key { gap: 14px !important; font-size: 10px !important; }

  /* Boxout */
  .ch3f__boxout {
    padding: 24px 20px !important;
  }
  .ch3f__boxout-list li { padding-left: 36px; font-size: 0.98rem !important; }

  /* Hide nav rail entirely on phones (was already hidden <1280px) */
  .article__rail { display: none !important; }
  body { padding-right: 0 !important; }

  /* Tweaks panel: collapse to a small handle on phones */
  #tweaks-panel {
    right: 12px !important;
    bottom: 12px !important;
    width: calc(100vw - 24px) !important;
    max-width: 320px !important;
    max-height: 70vh;
    overflow-y: auto;
  }

  /* Mechanism diagram: it has 5 nodes — make scrollable */
  .ch02__figure { margin-left: -8px; margin-right: -8px; padding: 20px 8px 16px !important; }
  .ch02__figure svg { min-width: 600px; }
  .ch02__figure > svg { display: block; }
  .ch02__figure {
    overflow-x: auto;
  }
  .ch02__figure-caption {
    padding-left: 0;
    padding-right: 0;
  }
}

/* ---- SMALL PHONE · <= 480px ---- */
@media (max-width: 480px) {
  /* Even more aggressive: pull side padding closer */
  .ch01, .ch02, .ch04, .ch05, .ch06,
  .ch3v, .ch3b, .ch3a, .ch3c, .ch3f, .biblio,
  section.chapter-break {
    padding-left: 16px !important;
    padding-right: 16px !important;
  }
  .nyt__plate-inner { padding: 14px 16px 20px !important; }
  .nyt__strip { padding: 12px 16px !important; }
  .nyt__byline { margin: 16px 16px 0 !important; }
  .nyt__caption { margin: 12px 16px 28px !important; }

  .ch04__card, .ch05__step, .ch3f__hero, .ch06__card, .ch3f__boxout {
    padding-left: 16px !important;
    padding-right: 16px !important;
  }

  /* Type tightening */
  .nyt__title { letter-spacing: -0.01em !important; }
  .ch3a__hero-num { font-size: 5.5rem !important; }

  /* Biblio search input */
  .biblio__search { grid-template-columns: 1fr; gap: 6px; }

  /* Card titles slightly smaller */
  .ch04__card-title, .ch05__step-title, .ch06__card-title { font-size: 1.18rem !important; }
}

/* =========================================================
   WP PAGE INTEGRATION — outer wrappers match article body
   Override Kadence's theme defaults on SDD-v13 posts so the
   WP shell (header band, content container, main wrap, entry
   content wrap, footer band) all use --void. Eliminates the
   visible tonal seam between Kadence's dark mode bg and the
   v13 article body. !important defeats Kadence's higher-
   specificity body.color-switch-dark rule.
   ========================================================= */
html:has(body.sdd-v13),
body.sdd-v13,
body.sdd-v13 #page,
body.sdd-v13 #wrapper,
body.sdd-v13 #main,
body.sdd-v13 #primary,
body.sdd-v13 .site,
body.sdd-v13 .site-main,
body.sdd-v13 .site-content,
body.sdd-v13 .content-container,
body.sdd-v13 .content-area,
body.sdd-v13 .content-wrap,
body.sdd-v13 .entry-content,
body.sdd-v13 .entry-content-wrap,
body.sdd-v13 main {
  background-color: var(--void) !important;
}

/* Header + footer bands also flip dark so they don't band the article */
body.sdd-v13 #masthead,
body.sdd-v13 .site-header,
body.sdd-v13 .site-main-header-wrap,
body.sdd-v13 .site-main-header-inner-wrap,
body.sdd-v13 .site-footer,
body.sdd-v13 .site-footer-wrap,
body.sdd-v13 .site-footer-inner-wrap {
  background-color: var(--void) !important;
}