/* ====================== TOKENS ====================== */
  :root {
    /* Paper system — slightly aged book stock */
    --paper:        #f4ecd9;
    --paper-soft:   #f7f1e0;
    --paper-bright: #faf5e6;
    --paper-deep:   #e6dcc3;
    --paper-edge:   #d9cdb0;

    /* Ink — warm near-black, never pure */
    --ink:          #1c1813;
    --ink-mid:      #43392a;
    --ink-soft:     #6e6450;
    --ink-faint:    #706858;

    /* Pigments */
    --forest:       #2f4924;
    --forest-mid:   #4d6a36;
    --moss:         #748a52;
    --amber:        #9e5620;
    --amber-mid:    #c47b3a;
    --rust:         #863d1e;
    --sky:          #5b6e7e;

    /* Rules */
    --rule:         rgba(28, 24, 19, 0.18);
    --rule-soft:    rgba(28, 24, 19, 0.08);
    --rule-strong:  rgba(28, 24, 19, 0.45);

    /* Layout */
    --max:          1340px;
    --pad-x:        64px;
    --col-gap:      32px;
    --baseline:     8px;

    /* Typography — C-refined: Playfair Display headlines */
    --serif-display:  'Playfair Display', 'Cardo', Georgia, serif;
    --serif-body:     'Cardo', Georgia, serif;
    --mono:           'IBM Plex Mono', 'SF Mono', Menlo, monospace;
    --typewriter:     'Courier Prime', 'Courier New', monospace;
  }

/* SKIP-LINK */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 12px 18px;
  font-family: var(--mono);
  font-size: 13px;
  text-decoration: none;
  z-index: 999;
}
.skip-link:focus { left: 16px; top: 16px; }

  /* ====================== RESET / BASE ====================== */
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    background: var(--paper);
    color: var(--ink);
    font-family: var(--serif-body);
    font-size: 18px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
  }

  /* Paper grain — warm noise + soft vignette */
  body::before {
    content: '';
    position: fixed; inset: 0; pointer-events: none; z-index: 1;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.7' numOctaves='2'/><feColorMatrix values='0 0 0 0 0.10  0 0 0 0 0.07  0 0 0 0 0.05  0 0 0 0.04 0'/></filter><rect width='220' height='220' filter='url(%23n)'/></svg>");
    opacity: 0.8;
    mix-blend-mode: multiply;
  }
  body::after {
    content: '';
    position: fixed; inset: 0; pointer-events: none; z-index: 1;
    background:
      radial-gradient(ellipse at 50% 0%, transparent 60%, rgba(28, 24, 19, 0.05) 100%),
      radial-gradient(ellipse at 50% 100%, transparent 60%, rgba(28, 24, 19, 0.06) 100%);
  }
  main, header, footer { position: relative; z-index: 2; }

  /* ====================== TYPOGRAPHY ====================== */
  .display {
    font-family: var(--serif-display);
    font-weight: 400;
    letter-spacing: -0.022em;
    line-height: 1.06;
    color: var(--ink);
    font-variation-settings: "opsz" 144;
  }
  .display em { font-style: italic; font-weight: 400; color: var(--forest); font-variation-settings: "opsz" 144; }

  h2.section-title {
    font-family: var(--serif-display);
    font-weight: 400;
    font-variation-settings: "opsz" 96;
    font-size: clamp(2rem, 3.2vw, 3rem);
    letter-spacing: -0.02em;
    line-height: 1.08;
  }
  h2.section-title em { font-style: italic; color: var(--forest); }

  h3.chapter-title {
    font-family: var(--serif-display);
    font-weight: 400;
    font-variation-settings: "opsz" 96;
    font-size: clamp(2.2rem, 3.4vw, 3.2rem);
    letter-spacing: -0.025em;
    line-height: 1.0;
  }
  h3.chapter-title em { font-style: italic; color: var(--forest); }

  .eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--ink-soft);
    font-weight: 400;
  }
  .eyebrow.forest { color: var(--forest); }
  .eyebrow.amber  { color: var(--amber); }

  .smallcaps {
    font-family: var(--serif-display);
    font-style: italic;
    font-weight: 400;
    font-variation-settings: "opsz" 14, "SOFT" 50;
    font-size: 0.95rem;
    letter-spacing: 0.08em;
    color: var(--ink-mid);
  }

  .micro {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-faint);
    letter-spacing: 0.04em;
  }

  p { font-family: var(--serif-body); }

  /* ====================== GRID ====================== */
  .container { max-width: var(--max); margin: 0 auto; padding: 0 var(--pad-x); position: relative; }
  .grid12 { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--col-gap); }

  /* ====================== SECTION OPENERS (contour ornament) ====================== */
  .opener { display: flex; align-items: center; gap: 18px; margin-bottom: 28px; }
  .opener .ornament { width: 60px; height: 12px; flex-shrink: 0; }
  .opener .ornament svg { width: 100%; height: 100%; display: block; color: var(--forest); }
  .opener .coord { font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-faint); margin-left: auto; }

  /* ====================== NAV ====================== */
  header.site-nav {
    position: sticky; top: 0; z-index: 50;
    background: rgba(244, 236, 217, 0.82);
    backdrop-filter: blur(16px) saturate(120%);
    border-bottom: 1px solid var(--rule);
  }
  header.site-nav .container { padding-top: 18px; padding-bottom: 18px; }
  header.site-nav .grid12 { align-items: center; }
  .brand-mark { grid-column: span 4; display: inline-block; line-height: 1.15; font-family: var(--typewriter); font-size: 0.92rem; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink); text-decoration: none; transition: color 0.2s ease; }
  .brand-mark:hover { color: var(--forest); }
  .brand-mark small { display: block; font-family: var(--typewriter); font-weight: 400; font-size: 0.58rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-soft); margin-top: 5px; }
  .site-links { grid-column: span 5; display: flex; gap: 28px; justify-content: center; }
  .site-links a {
    font-family: var(--serif-display);
    font-style: italic;
    font-size: 1.02rem;
    font-weight: 400;
    color: var(--ink-mid);
    text-decoration: none;
    transition: color 0.25s ease;
    font-variation-settings: "opsz" 14;
  }
  .site-links a:hover { color: var(--forest); }
  .site-links a.active { color: var(--ink); border-bottom: 1px solid var(--ink); padding-bottom: 2px; }
  .nav-meta { grid-column: span 3; display: flex; justify-content: flex-end; align-items: center; gap: 18px; }
  .nav-meta .coord { font-family: var(--mono); font-size: 10px; color: var(--ink-faint); letter-spacing: 0.15em; text-transform: uppercase; }
  .nav-cta {
    font-family: var(--mono); font-size: 11px;
    color: var(--ink); text-decoration: none;
    text-transform: uppercase; letter-spacing: 0.18em;
    padding: 9px 16px;
    border: 1px solid var(--ink);
    transition: all 0.2s ease;
  }
  .nav-cta:hover { background: var(--ink); color: var(--paper); }

  /* ====================== HERO ====================== */
  section.hero { padding: 120px 0 80px; position: relative; }

  .hero-headline { grid-column: 1 / span 7; padding-right: 32px; }
  .hero-aside    { grid-column: 9 / span 4; }

  .hero-headline .opener { margin-bottom: 56px; }

  .hero-headline h1.display {
    font-size: clamp(3rem, 5.8vw, 5.6rem);
    margin-bottom: 48px;
  }
  .hero-headline h1 .line { display: block; }
  .hero-headline h1 .line + .line { margin-top: 4px; }
  .hero-headline h1 .accent {
    color: var(--ink);
    position: relative;
    display: inline-block;
  }
  .hero-headline h1 .accent::after {
    content: '';
    position: absolute; left: 0; right: 0;
    bottom: 0.16em; height: 0.32em;
    background: rgba(163, 94, 35, 0.22);
    z-index: -1;
  }

  .hero-headline .lede {
    font-family: var(--serif-body);
    font-size: 1.28rem;
    line-height: 1.55;
    color: var(--ink-mid);
    max-width: 56ch;
    margin-bottom: 52px;
  }
  .hero-headline .lede em { font-style: italic; color: var(--forest); }

  /* Hero CTAs — quiet, like book references */
  .hero-cta {
    display: flex; gap: 32px; align-items: center;
    padding-top: 28px;
    border-top: 1px solid var(--rule);
    max-width: 56ch;
  }
  .ref-link {
    font-family: var(--serif-display);
    font-style: italic;
    font-size: 1.05rem;
    color: var(--ink);
    text-decoration: none;
    font-variation-settings: "opsz" 14;
    position: relative;
    padding-bottom: 3px;
    background-image: linear-gradient(to right, var(--ink) 0, var(--ink) 100%);
    background-size: 100% 1px;
    background-position: 0 100%;
    background-repeat: no-repeat;
    transition: color 0.25s ease, background-image 0.25s ease;
  }
  .ref-link:hover { color: var(--forest); background-image: linear-gradient(to right, var(--forest) 0, var(--forest) 100%); }
  .ref-link .marker {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.18em;
    color: var(--ink-faint);
    margin-right: 8px;
    text-transform: uppercase;
  }

  /* Instrument panel */
  .instrument {
    background: var(--paper-bright);
    border: 1px solid var(--ink);
    box-shadow: 6px 6px 0 0 var(--paper-deep);
    padding: 22px 24px 20px;
  }
  .instrument .inst-top {
    display: flex; justify-content: space-between; align-items: center;
    padding-bottom: 14px; border-bottom: 1px solid var(--rule);
    margin-bottom: 18px;
  }
  .instrument .inst-title {
    font-family: var(--mono); font-size: 11px;
    text-transform: uppercase; letter-spacing: 0.22em;
    color: var(--ink); display: flex; align-items: center; gap: 9px;
  }
  .live-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--forest-mid);
    box-shadow: 0 0 0 0 rgba(77, 106, 54, 0.6);
    animation: pulse 2.4s infinite;
  }
  @keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(77, 106, 54, 0.5); }
    50%      { box-shadow: 0 0 0 6px rgba(77, 106, 54, 0); }
  }
  .instrument .inst-time { font-family: var(--mono); font-size: 10px; color: var(--ink-soft); letter-spacing: 0.08em; }

  .signal {
    display: grid; grid-template-columns: 1fr auto;
    align-items: baseline;
    padding: 10px 0;
    border-bottom: 1px dashed var(--rule);
  }
  .signal:last-of-type { border-bottom: none; padding-bottom: 6px; }
  .signal .name {
    font-family: var(--mono); font-size: 10.5px;
    color: var(--ink-mid); text-transform: uppercase;
    letter-spacing: 0.14em;
  }
  .signal .val {
    font-family: var(--serif-display);
    font-weight: 400; font-variation-settings: "opsz" 48;
    font-size: 1.5rem; letter-spacing: -0.02em;
    color: var(--ink); line-height: 1;
  }
  .signal .val .unit {
    font-family: var(--mono); font-size: 0.6rem;
    color: var(--ink-soft); margin-left: 5px;
    text-transform: uppercase; letter-spacing: 0.1em;
  }
  .signal .val .trend {
    display: inline-block; margin-left: 8px; font-size: 0.85rem;
    font-family: var(--mono);
  }
  .signal .val .trend.up { color: var(--forest); }
  .signal .val .trend.down { color: var(--amber); }

  .inst-spark { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--rule); }
  .inst-spark svg { width: 100%; height: 38px; display: block; }
  .inst-foot {
    margin-top: 12px;
    font-family: var(--mono); font-size: 10px;
    color: var(--ink-faint); letter-spacing: 0.08em;
    display: flex; justify-content: space-between;
  }

  /* Hero environmental scene — SVG ridgeline composition (illustrative, no photography) */
  .scene {
    position: relative;
    min-height: 540px;
    border: 1px solid var(--ink);
    background: var(--paper-bright);
    box-shadow: 6px 6px 0 0 var(--paper-deep);
    overflow: hidden;
  }
  .scene .scene-bg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
  .scene .instrument {
    position: absolute; top: 16px; left: 16px; right: 16px; z-index: 2;
    background: rgba(250, 245, 230, 0.93);
    -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
    box-shadow: 5px 5px 0 0 var(--paper-deep);
  }
  .scene .scene-cap {
    position: absolute; left: 18px; bottom: 14px; z-index: 2;
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
    text-transform: uppercase; color: var(--ink-soft);
  }

  /* ====================== HORIZONTAL RULE WITH ORNAMENT ====================== */
  .rule-ornament {
    position: relative;
    height: 30px;
    margin: 8px 0;
  }
  .rule-ornament::before, .rule-ornament::after {
    content: '';
    position: absolute; top: 50%;
    height: 1px; background: var(--rule);
  }
  .rule-ornament::before { left: 0; right: calc(50% + 22px); }
  .rule-ornament::after { right: 0; left: calc(50% + 22px); }
  .rule-ornament svg {
    position: absolute; left: 50%; top: 50%;
    transform: translate(-50%, -50%);
    width: 32px; height: 18px; color: var(--ink-faint);
  }

  /* ====================== IDENTITY BLOCK (replaces traction banner) ====================== */
  section.colophon {
    padding: 48px 0 56px;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    background: var(--paper-soft);
  }
  .colophon-item { grid-column: span 3; padding-right: 24px; }
  .colophon-item:not(:last-child) { border-right: 1px solid var(--rule); }
  .colophon-item .lbl { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.22em; color: var(--ink-soft); margin-bottom: 12px; }
  .colophon-item .val { font-family: var(--serif-display); font-style: italic; font-variation-settings: "opsz" 24; font-size: 1.18rem; line-height: 1.35; color: var(--ink); max-width: 22ch; }
  .colophon-item:not(:last-child) .val { padding-right: 8px; }

  /* ====================== PILLARS — chapter spread ====================== */
  section.pillars { padding: 130px 0 110px; }
  .pillars-header { margin-bottom: 80px; }
  .pillars-header > .lead { grid-column: 1 / span 8; }
  .pillars-header h2.section-title { margin-bottom: 16px; }
  .pillars-header > .lead p { font-family: var(--serif-body); font-size: 1.18rem; color: var(--ink-mid); max-width: 50ch; line-height: 1.55; }

  .chapter { margin-bottom: 72px; padding-top: 56px; border-top: 1px solid var(--rule); }
  .chapter:first-of-type { padding-top: 0; border-top: none; }
  .chapter:last-of-type { margin-bottom: 0; }

  .chapter-body  { grid-column: 1 / span 7; padding-right: 24px; }
  .chapter-aside { grid-column: 9 / span 4; }
  .chapter.reverse .chapter-body  { grid-column: 6 / span 7; padding-left: 24px; padding-right: 0; }
  .chapter.reverse .chapter-aside { grid-column: 1 / span 4; grid-row: 1; }

  /* Chapter numeral as decorative roman */
  .chapter .chap-roman {
    font-family: var(--serif-display);
    font-style: italic;
    font-variation-settings: "opsz" 144;
    font-size: 4.2rem;
    line-height: 1; color: var(--amber);
    margin-bottom: 12px;
    display: block;
  }
  .chapter .eyebrow-line { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; }

  .chapter h3.chapter-title { margin-bottom: 16px; }
  .chapter .standfirst {
    font-family: var(--serif-display);
    font-style: italic;
    font-variation-settings: "opsz" 36;
    font-size: 1.3rem;
    color: var(--ink-mid);
    line-height: 1.45;
    margin-bottom: 28px;
    max-width: 32ch;
  }
  .chapter .body-prose {
    font-family: var(--serif-body);
    font-size: 1.06rem;
    color: var(--ink-mid);
    line-height: 1.65;
    margin-bottom: 36px;
    max-width: 52ch;
  }
  .chapter .body-prose .dropcap {
    float: left;
    font-family: var(--serif-display);
    font-weight: 400;
    font-variation-settings: "opsz" 144;
    font-size: 4.5em;
    line-height: 0.82;
    padding: 0.08em 0.12em 0 0;
    color: var(--forest);
    font-style: italic;
  }

  /* Pillar proof table */
  .proof-table {
    border-top: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
    max-width: 56ch;
    margin-bottom: 28px;
  }
  .proof-row {
    display: grid; grid-template-columns: 60px 1fr auto;
    align-items: baseline;
    padding: 14px 0;
    border-bottom: 1px solid var(--rule);
  }
  .proof-row:last-child { border-bottom: none; }
  .proof-row .idx { font-family: var(--mono); font-size: 10px; color: var(--ink-faint); letter-spacing: 0.15em; }
  .proof-row .desc { font-family: var(--serif-body); font-size: 1rem; color: var(--ink); }
  .proof-row .val {
    font-family: var(--serif-display);
    font-variation-settings: "opsz" 36;
    font-weight: 400;
    font-size: 1.4rem; letter-spacing: -0.015em;
    color: var(--ink);
  }
  .chapter.env .proof-row .val { color: var(--forest); }
  .chapter.sym .proof-row .val { color: var(--amber); }

  /* Aside diagram cards */
  .diagram-card {
    background: var(--paper-bright);
    border: 1px solid var(--ink);
    box-shadow: 6px 6px 0 0 var(--paper-deep);
    padding: 18px 20px 16px;
  }
  .diagram-card .dc-head {
    display: flex; justify-content: space-between; align-items: baseline;
    margin-bottom: 12px; padding-bottom: 10px;
    border-bottom: 1px solid var(--rule);
  }
  .diagram-card .dc-title {
    font-family: var(--mono); font-size: 11px;
    text-transform: uppercase; letter-spacing: 0.18em;
    color: var(--ink);
  }
  .diagram-card .dc-tag {
    font-family: var(--mono); font-size: 10px;
    color: var(--ink-faint); letter-spacing: 0.12em;
  }
  .diagram-card svg { width: 100%; display: block; }
  .diagram-card .dc-cap {
    margin-top: 12px; padding-top: 12px;
    border-top: 1px solid var(--rule);
    font-family: var(--serif-display); font-style: italic;
    font-size: 11.5px; color: var(--ink-soft);
    letter-spacing: 0.02em; line-height: 1.5;
    font-variation-settings: "opsz" 14;
  }

  /* ====================== METHODOLOGY (printed table) ====================== */
  section.methodology { padding: 110px 0; background: var(--paper-soft); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
  .meth-header { margin-bottom: 72px; }
  .meth-header > .lead { grid-column: 1 / span 8; }
  .meth-header h2 { margin-bottom: 16px; }
  .meth-header > .lead p { font-family: var(--serif-body); font-size: 1.18rem; color: var(--ink-mid); max-width: 52ch; line-height: 1.55; }

  .meth-table { grid-column: 1 / span 12; border-top: 2px solid var(--ink); }
  .meth-row {
    display: grid; grid-template-columns: 80px 3fr 5fr 2fr;
    align-items: start;
    padding: 36px 0;
    border-bottom: 1px solid var(--rule);
    column-gap: var(--col-gap);
  }
  .meth-row:last-child { border-bottom: 2px solid var(--ink); }
  .meth-row .idx {
    font-family: var(--serif-display);
    font-style: italic;
    font-variation-settings: "opsz" 48;
    font-size: 1.8rem; color: var(--amber);
    line-height: 1;
  }
  .meth-row .title {
    font-family: var(--serif-display);
    font-weight: 400; font-variation-settings: "opsz" 36;
    font-size: 1.6rem; letter-spacing: -0.015em;
    line-height: 1.15;
    color: var(--ink);
  }
  .meth-row .title em { font-style: italic; color: var(--forest); }
  .meth-row .body {
    font-family: var(--serif-body);
    font-size: 1.02rem; color: var(--ink-mid);
    line-height: 1.6;
  }
  .meth-row .body sup { color: var(--amber); font-family: var(--mono); font-size: 9.5px; }
  .meth-row .citation {
    font-family: var(--mono); font-size: 10.5px;
    color: var(--ink-faint); letter-spacing: 0.06em;
    line-height: 1.55;
    border-left: 1px solid var(--rule);
    padding-left: 16px;
  }
  .meth-row .citation strong { color: var(--ink-mid); font-weight: 500; }

  /* ====================== FIELD NOTES ====================== */
  section.notes { padding: 110px 0; }
  .notes-header { margin-bottom: 60px; }
  .notes-header > .lead { grid-column: 1 / span 8; }
  .notes-header h2 { margin-bottom: 12px; }
  .notes-header > .lead p {
    font-family: var(--serif-display); font-style: italic;
    font-variation-settings: "opsz" 36;
    font-size: 1.18rem; color: var(--ink-mid);
    max-width: 50ch; line-height: 1.55;
  }

  .notes-list { grid-column: 1 / span 12; border-top: 1px solid var(--rule); }
  .note-row {
    display: grid; grid-template-columns: 140px 1fr 200px;
    align-items: baseline;
    padding: 22px 0;
    border-bottom: 1px solid var(--rule);
    column-gap: var(--col-gap);
    transition: background 0.2s ease;
  }
  .note-row:hover { background: var(--paper-soft); }
  .note-row .date {
    font-family: var(--mono); font-size: 11px;
    color: var(--ink-faint); letter-spacing: 0.14em;
    text-transform: uppercase;
  }
  .note-row .entry {
    font-family: var(--serif-body);
    font-size: 1.08rem; color: var(--ink);
    line-height: 1.5;
  }
  .note-row .entry em { font-style: italic; color: var(--forest); }
  .note-row .tag {
    font-family: var(--mono); font-size: 10px;
    color: var(--ink-soft); letter-spacing: 0.16em;
    text-transform: uppercase; text-align: right;
  }

  /* ====================== FAQ ====================== */
  section.faq-section { padding: 110px 0; }
  .faq { grid-column: 1 / span 12; max-width: 80ch; }
  .faq dt {
    font-family: var(--serif-display);
    font-size: clamp(1.2rem, 1.8vw, 1.45rem);
    font-weight: 500; letter-spacing: -0.01em; color: var(--ink);
    padding: 28px 0 10px; border-top: 1px solid var(--rule);
  }
  .faq dt:first-of-type { border-top: none; padding-top: 0; }
  .faq dd {
    font-family: var(--serif-body);
    font-size: 1.08rem; line-height: 1.6; color: var(--ink-mid);
    margin: 0; max-width: 68ch;
  }

  /* ====================== GET IN TOUCH ====================== */
  section.contact { padding: 120px 0; background: var(--paper-soft); border-top: 1px solid var(--rule); }
  .contact-block { grid-column: 2 / span 10; text-align: center; }
  .contact-block .opener { justify-content: center; }
  .contact-block .opener .coord { display: none; }
  .contact-block h2 {
    font-family: var(--serif-display);
    font-weight: 400;
    font-variation-settings: "opsz" 144;
    font-size: clamp(2.4rem, 4vw, 3.4rem);
    letter-spacing: -0.022em;
    line-height: 1.08;
    margin-bottom: 24px;
  }
  .contact-block h2 em { font-style: italic; color: var(--forest); }
  .contact-block p {
    font-family: var(--serif-body);
    font-size: 1.2rem;
    color: var(--ink-mid);
    max-width: 60ch; margin: 0 auto 40px;
    line-height: 1.55;
  }
  .contact-block .email-link {
    font-family: var(--serif-display);
    font-style: italic;
    font-variation-settings: "opsz" 96;
    font-size: clamp(1.4rem, 2.4vw, 2rem);
    color: var(--ink);
    text-decoration: none;
    border-bottom: 1px solid var(--ink);
    padding-bottom: 4px;
    transition: color 0.25s, border-color 0.25s;
  }
  .contact-block .email-link:hover { color: var(--amber); border-color: var(--amber); }
  .contact-block .secondary {
    margin-top: 40px;
    display: flex; gap: 40px; justify-content: center;
    flex-wrap: wrap;
    font-family: var(--mono); font-size: 11px;
    text-transform: uppercase; letter-spacing: 0.16em;
    color: var(--ink-soft);
  }
  .contact-block .secondary a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--rule); padding-bottom: 2px; transition: border-color 0.25s; }
  .contact-block .secondary a:hover { border-bottom-color: var(--forest); color: var(--forest); }

  /* ====================== FOOTER (colophon) ====================== */
  footer.colophon-foot {
    background: var(--ink);
    color: var(--paper);
    padding: 90px 0 36px;
  }
  .foot-brand { grid-column: 1 / span 5; }
  .foot-brand .brand {
    font-family: var(--typewriter);
    font-size: 1.55rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    line-height: 1.4;
    margin-bottom: 22px;
    color: var(--paper);
  }
  /* Inline brand-name treatment — for use inside meta/copyright lines */
  .brand-inline {
    font-family: var(--typewriter);
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-size: 0.95em;
  }
  .foot-brand .tag {
    font-family: var(--serif-body);
    font-size: 1.08rem;
    line-height: 1.55;
    color: rgba(244, 236, 217, 0.72);
    max-width: 36ch;
  }
  .foot-nav { grid-column: 7 / span 6; display: grid; grid-template-columns: repeat(3, 1fr); column-gap: 32px; padding-left: 32px; border-left: 1px solid rgba(244, 236, 217, 0.12); }
  .foot-nav .col .foot-nav-label {
    font-family: var(--mono); font-size: 10.5px;
    text-transform: uppercase; letter-spacing: 0.22em;
    color: rgba(244, 236, 217, 0.5);
    margin-bottom: 18px; font-weight: 400;
  }
  .foot-nav ul { list-style: none; }
  .foot-nav li { margin-bottom: 10px; }
  .foot-nav a {
    font-family: var(--serif-display);
    font-style: italic;
    font-size: 1.05rem;
    color: var(--paper);
    text-decoration: none;
    opacity: 0.85;
    transition: color 0.25s, opacity 0.25s;
    font-variation-settings: "opsz" 14;
  }
  .foot-nav a:hover { opacity: 1; color: var(--amber-mid); }

  .foot-colophon {
    grid-column: 1 / span 12;
    margin-top: 72px; padding-top: 28px;
    border-top: 1px solid rgba(244, 236, 217, 0.14);
    display: grid; grid-template-columns: repeat(2, 1fr); column-gap: 32px;
    font-family: var(--mono); font-size: 10.5px;
    color: rgba(244, 236, 217, 0.5);
    letter-spacing: 0.04em; line-height: 1.6;
  }
  .foot-colophon strong { display: block; margin-bottom: 6px; color: rgba(244, 236, 217, 0.85); font-weight: 500; font-family: var(--mono); }
  .foot-colophon .right { text-align: right; }
  .foot-colophon .center { text-align: center; }

  /* ====================== ANIMATIONS ====================== */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
  }
  @keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
  }
  /* transform-only rise: full opacity throughout, so the LCP element paints immediately */
  @keyframes riseUp {
    from { transform: translateY(10px); }
    to   { transform: translateY(0); }
  }

  /* Hero entrance kept subtle but snappy — long delays were pushing LCP past budget.
     The headline + scene (LCP candidates) now settle well under 0.6s. */
  .anim-eyebrow  { animation: fadeUp 0.4s ease-out 0.00s both; }
  .anim-line-1   { animation: riseUp 0.45s ease-out 0.03s both; }
  .anim-line-2   { animation: riseUp 0.45s ease-out 0.10s both; }
  .anim-lede     { animation: fadeUp 0.5s ease-out 0.18s both; }
  .anim-cta      { animation: fadeUp 0.5s ease-out 0.28s both; }
  .anim-aside    { animation: riseUp 0.5s ease-out 0.10s both; }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
    .live-dot { box-shadow: none; }
  }

  /* ====================== MOBILE HAMBURGER NAV — default (desktop: hidden) ====================== */
  .mobile-nav { display: none; }

  /* ====================== RESPONSIVE ====================== */
  @media (max-width: 1100px) {
    :root { --pad-x: 28px; --col-gap: 20px; }
    .grid12 { grid-template-columns: 1fr; column-gap: 0; row-gap: 28px; }
    [class*='grid-column'], .hero-headline, .hero-aside,
    .chapter-body, .chapter-aside, .pillars-header > .lead,
    .meth-header > .lead, .meth-table, .notes-header > .lead, .notes-list,
    .contact-block, .foot-brand, .foot-nav, .foot-colophon,
    .colophon-item, .brand-mark, .site-links, .nav-meta {
      grid-column: 1 / -1 !important;
    }
    .chapter.reverse .chapter-body, .chapter.reverse .chapter-aside { grid-column: 1 / -1 !important; }
    .colophon-item { border-right: none; padding: 18px 0; border-bottom: 1px solid var(--rule); }
    .colophon-item:last-child { border-bottom: none; }
    .meth-row { grid-template-columns: 1fr; row-gap: 14px; padding: 28px 0; }
    .note-row { grid-template-columns: 1fr; row-gap: 6px; }
    .note-row .tag { text-align: left; }
    .site-links { display: none; }
    .nav-meta { display: none; }
    .mobile-nav { display: block; }
    .foot-nav { padding-left: 0; border-left: none; padding-top: 28px; border-top: 1px solid rgba(244, 236, 217, 0.12); }
    .foot-colophon { grid-template-columns: 1fr; row-gap: 20px; }
    .foot-colophon .right, .foot-colophon .center { text-align: left; }
  }

  /* ====================== MOBILE HAMBURGER NAV — horizontal drop-bar ====================== */
  .mobile-nav summary { list-style: none; }
  .mobile-nav summary::-webkit-details-marker { display: none; }
  .mobile-nav-trigger {
    cursor: pointer;
    width: 42px; height: 42px;
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    gap: 5px;
    background: none; border: none; padding: 0;
    margin-left: auto;
  }
  .mobile-nav-trigger .bar {
    display: block; width: 22px; height: 1.5px;
    background: var(--ink);
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .mobile-nav[open] .mobile-nav-trigger .bar:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .mobile-nav[open] .mobile-nav-trigger .bar:nth-child(2) { opacity: 0; }
  .mobile-nav[open] .mobile-nav-trigger .bar:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
  .mobile-nav-trigger:focus-visible { outline: 2px solid var(--forest); outline-offset: 4px; }

  /* Horizontal drop-bar: positioned below the header, spans full header width */
  .mobile-nav-bar {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--paper);
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    padding: 18px var(--pad-x);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 6px 28px;
    z-index: 1;
  }
  .mobile-nav-bar a {
    font-family: var(--typewriter);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink);
    text-decoration: none;
    transition: color 0.2s ease;
    padding: 6px 0;
    white-space: nowrap;
  }
  .mobile-nav-bar a:hover,
  .mobile-nav-bar a:focus-visible { color: var(--forest); }
  .mobile-nav-bar a.active { color: var(--forest); border-bottom: 1px solid var(--forest); }

  @media (prefers-reduced-motion: reduce) {
    .mobile-nav-trigger .bar { transition: none !important; }
  }