/* ============ TOKENS ============ */
  :root {
    /* ELSG / site-wide register — light (paper) */
    --paper: #FBF8F3;
    --paper-alt: #F2ECE4;
    --paper-line: #E4DCD0;
    --ink: #1A1712;
    --ink-soft: #5B5348;
    --ink-faint: #8A8073;
    --maroon: #8C1D26;
    --maroon-deep: #6E1620;
    --maroon-tint: rgba(140,29,38,0.08);
    --rule: #A6A29A;

    /* Kit register — always-dark panel, independent of site theme */
    --kit-ground: #14181D;
    --kit-ground-alt: #1B2027;
    --kit-paper: #ECEEF2;
    --kit-paper-soft: #A9B0BC;
    --kit-blue: #4C86FF;
    --kit-teal: #2BC6C0;
    --kit-line: rgba(236,238,242,0.14);

    --shadow: 0 18px 40px -20px rgba(26,23,18,0.35);
    --serif: "EB Garamond", "Iowan Old Style", Georgia, serif;
    --sans: "Work Sans", "Segoe UI", system-ui, sans-serif;
    --kit-display: "Montserrat", var(--sans);
    --kit-body: "Lato", var(--sans);
  }

  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --paper: #1B1613;
      --paper-alt: #241D18;
      --paper-line: #362C24;
      --ink: #F1EAE0;
      --ink-soft: #C4B9AA;
      --ink-faint: #90867A;
      --maroon: #E2828A;
      --maroon-deep: #EFA1A7;
      --maroon-tint: rgba(226,130,138,0.12);
      --rule: #4E463C;
      --kit-ground: #101318;
      --kit-ground-alt: #171B21;
      --shadow: 0 18px 40px -20px rgba(0,0,0,0.6);
    }
  }
  :root[data-theme="dark"] {
    --paper: #1B1613;
    --paper-alt: #241D18;
    --paper-line: #362C24;
    --ink: #F1EAE0;
    --ink-soft: #C4B9AA;
    --ink-faint: #90867A;
    --maroon: #E2828A;
    --maroon-deep: #EFA1A7;
    --maroon-tint: rgba(226,130,138,0.12);
    --rule: #4E463C;
    --kit-ground: #101318;
    --kit-ground-alt: #171B21;
    --shadow: 0 18px 40px -20px rgba(0,0,0,0.6);
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  }

  body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--serif);
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

  img { max-width: 100%; display: block; }
  a { color: inherit; }

  .wrap { max-width: 1180px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 56px); }
  .measure { max-width: 62ch; }

  h1, h2, h3 { text-wrap: balance; margin: 0; font-weight: 600; }

  .eyebrow {
    font-family: var(--sans); font-weight: 600; font-size: 12.5px;
    letter-spacing: 0.16em; text-transform: uppercase;
    color: var(--maroon);
  }

  /* ============ TEXTURE ============ */
  .texture {
    position: absolute; inset: 0; pointer-events: none;
    background-image: repeating-linear-gradient(0deg, rgba(140,29,38,0.05) 0, rgba(140,29,38,0.05) 1px, transparent 1px, transparent 44px),
      repeating-linear-gradient(90deg, rgba(140,29,38,0.035) 0, rgba(140,29,38,0.035) 1px, transparent 1px, transparent 44px);
    opacity: 0.6;
  }

  /* ============ NAV ============ */
  .nav {
    position: sticky; top: 0; z-index: 50;
    background: color-mix(in srgb, var(--paper) 88%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--paper-line);
  }
  .nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
  .nav-mark { display: flex; align-items: center; gap: 10px; font-family: var(--sans); font-weight: 700; font-size: 14px; letter-spacing: 0.04em; }
  .nav-mark img { height: 22px; width: auto; }
  .nav-links { display: flex; gap: 16px; list-style: none; margin: 0; padding: 0; font-family: var(--sans); font-size: 12px; font-weight: 600; letter-spacing: 0.02em; }
  .nav-links a { text-decoration: none; color: var(--ink-soft); padding-bottom: 4px; border-bottom: 2px solid transparent; transition: color 0.15s, border-color 0.15s; white-space: nowrap; }
  .nav-links a:hover, .nav-links a.active { color: var(--maroon); border-color: var(--maroon); }
  @media (min-width: 480px) { .nav-links { gap: 22px; font-size: 13px; } }
  @media (min-width: 720px) { .nav-links { gap: 28px; font-size: 13.5px; } }

  /* ============ HERO ============ */
  .hero { position: relative; overflow: hidden; padding: clamp(64px, 11vw, 120px) 0 clamp(56px, 9vw, 96px); }
  .hero-grid { position: relative; display: grid; gap: 48px; align-items: center; }
  @media (min-width: 900px) { .hero-grid { grid-template-columns: 1.05fr 0.95fr; } }

  .hero-tagline-rotator { position: relative; min-height: clamp(92px, 12.8vw, 152px); margin: 18px 0 22px; }
  .hero-tagline-rotator span {
    position: absolute; inset: 0;
    font-family: var(--serif); font-weight: 600; font-style: italic;
    font-size: clamp(26px, 3.6vw, 40px); line-height: 1.18; color: var(--maroon);
    opacity: 0; transform: translateY(6px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .hero-tagline-rotator span.on { opacity: 1; transform: translateY(0); }

  .hero-sub { font-size: 18px; color: var(--ink-soft); max-width: 46ch; }
  .hero-byline { margin-top: 26px; font-family: var(--sans); font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); }

  .hero-cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }

  .btn {
    display: inline-flex; align-items: center; gap: 8px;
    font-family: var(--sans); font-weight: 700; font-size: 13.5px; letter-spacing: 0.03em;
    padding: 13px 22px; border-radius: 3px; text-decoration: none; cursor: pointer; border: 1.5px solid transparent;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s;
  }
  .btn:hover { transform: translateY(-1px); }
  .btn-maroon { background: var(--maroon); color: var(--paper); }
  .btn-maroon:hover { background: var(--maroon-deep); box-shadow: var(--shadow); }
  .btn-outline { background: transparent; border-color: var(--rule); color: var(--ink); }
  .btn-outline:hover { border-color: var(--maroon); color: var(--maroon); }
  .btn-kit { background: linear-gradient(95deg, var(--kit-blue), var(--kit-teal)); color: #0B0D10; }
  .btn-kit:hover { filter: brightness(1.08); box-shadow: 0 18px 40px -18px rgba(76,134,255,0.55); }
  .btn-kit-outline { background: transparent; border-color: var(--kit-line); color: var(--kit-paper); }
  .btn-kit-outline:hover { border-color: var(--kit-blue); color: var(--kit-blue); }

  .hero-stack { position: relative; display: flex; justify-content: center; align-items: center; min-height: 340px; }
  .hero-stack img {
    position: absolute; width: min(58%, 300px); border-radius: 2px;
    box-shadow: 0 30px 60px -24px rgba(26,23,18,0.45);
    border: 1px solid rgba(26,23,18,0.08);
  }
  .hero-stack .cover-kit { transform: rotate(-7deg) translate(-64px, 14px); z-index: 1; }
  .hero-stack .cover-guide { transform: rotate(5deg) translate(46px, -10px); z-index: 2; }

  /* ============ SECTION SHELLS ============ */
  section { position: relative; }
  .section-pad { padding: clamp(64px, 10vw, 108px) 0; }

  .spine-rule { width: 1px; background: var(--rule); opacity: 0.5; }

  .divider { border: 0; border-top: 1px solid var(--paper-line); margin: 0; }

  /* ============ GUIDE (flagship) ============ */
  #guide { background: var(--paper); }
  .guide-grid { display: grid; gap: 56px; }
  @media (min-width: 920px) { .guide-grid { grid-template-columns: 0.85fr 1.15fr; align-items: start; } }

  .cover-frame { position: relative; }
  .cover-frame img { border-radius: 2px; box-shadow: var(--shadow); border: 1px solid var(--paper-line); }
  .cover-frame .scope-line {
    margin-top: 18px; text-align: center; font-family: var(--sans); font-weight: 600; font-size: 11px;
    letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-faint);
  }

  .drop-open { font-style: italic; color: var(--maroon); font-size: 21px; line-height: 1.4; display: block; margin-bottom: 18px; }

  .guide-title { font-size: clamp(30px, 4vw, 44px); line-height: 1.08; margin: 6px 0 10px; }
  .guide-subtitle { font-style: italic; color: var(--ink-soft); font-size: 19px; margin-bottom: 26px; }

  .badge-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
  .badge {
    font-family: var(--sans); font-size: 11.5px; font-weight: 600; letter-spacing: 0.05em;
    padding: 7px 13px; border: 1px solid var(--paper-line); border-radius: 999px; color: var(--ink-soft);
    background: var(--paper-alt);
  }

  /* praise */
  .praise-block { margin-top: 44px; border-top: 1px solid var(--paper-line); padding-top: 34px; }
  .praise-label { font-family: var(--sans); font-weight: 700; font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--maroon); margin-bottom: 20px; }
  .praise-item { display: flex; gap: 14px; margin-bottom: 20px; }
  .praise-item:last-child { margin-bottom: 0; }
  .praise-mark { font-family: var(--serif); font-size: 30px; font-weight: 700; color: var(--maroon); line-height: 1; flex-shrink: 0; }
  .praise-text { font-style: italic; color: var(--ink); font-size: 16.5px; line-height: 1.45; }
  .praise-attrib { font-family: var(--sans); font-weight: 700; font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin-top: 5px; }

  /* ============ KIT (companion, dark register) ============ */
  #kit {
    background: var(--kit-ground); color: var(--kit-paper);
    font-family: var(--kit-body);
  }
  #kit .eyebrow { font-family: var(--kit-display); color: var(--kit-teal); }
  #kit h2, #kit h3 { font-family: var(--kit-display); }
  .kit-ribbon {
    display: inline-flex; align-items: center; gap: 8px; margin-bottom: 22px;
    font-family: var(--kit-display); font-size: 11px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--kit-paper-soft); border: 1px solid var(--kit-line); padding: 7px 14px; border-radius: 999px;
  }
  .kit-ribbon b { color: var(--kit-teal); font-weight: 800; }
  .kit-grid { display: grid; gap: 56px; }
  @media (min-width: 920px) { .kit-grid { grid-template-columns: 1.15fr 0.85fr; align-items: start; } }
  .kit-title { font-family: var(--kit-display); font-weight: 800; font-size: clamp(28px, 3.6vw, 40px); line-height: 1.1; margin-bottom: 12px; letter-spacing: -0.01em; }
  .kit-subtitle { color: var(--kit-paper-soft); font-size: 17px; margin-bottom: 26px; max-width: 52ch; }
  .kit-lede { font-size: 17px; color: var(--kit-paper); margin-bottom: 28px; max-width: 60ch; }

  .kit-cols { display: grid; gap: 28px; margin-top: 8px; }
  @media (min-width: 620px) { .kit-cols { grid-template-columns: 1fr 1fr; } }
  .kit-col h4 {
    font-family: var(--kit-display); font-size: 12.5px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--kit-blue); margin-bottom: 14px;
  }
  .kit-col ul { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 11px; }
  .kit-col li { position: relative; padding-left: 18px; font-size: 14.5px; line-height: 1.5; color: var(--kit-paper-soft); }
  .kit-col li::before { content: "—"; position: absolute; left: 0; top: 0; color: var(--kit-teal); }
  .kit-col li b { color: var(--kit-paper); font-weight: 600; }

  .kit-footnote { margin-top: 30px; font-size: 13px; color: var(--kit-paper-soft); border-top: 1px solid var(--kit-line); padding-top: 18px; }

  .kit-cover-frame img { border-radius: 3px; box-shadow: 0 24px 60px -20px rgba(0,0,0,0.6); }
  .kit-cover-frame { position: sticky; top: 96px; }

  /* ============ AUTHOR ============ */
  #author { background: var(--paper-alt); }
  .author-grid { display: grid; gap: 48px; }
  @media (min-width: 900px) { .author-grid { grid-template-columns: 1fr 0.62fr; align-items: start; } }
  .author-name { font-size: clamp(26px, 3.2vw, 34px); margin: 8px 0 22px; }
  .author-bio p { margin: 0 0 18px; color: var(--ink); font-size: 16.5px; }
  .author-bio p:first-of-type::first-letter {
    font-family: var(--serif); font-weight: 700; font-size: 3.4em; float: left; line-height: 0.82;
    padding: 0.04em 0.08em 0 0; color: var(--maroon);
  }
  .credential-card { background: var(--paper); border: 1px solid var(--paper-line); border-radius: 4px; padding: 28px; }
  .credential-card h4 { font-family: var(--sans); font-size: 11.5px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--maroon); margin-bottom: 16px; }
  .credential-card ul { margin: 0 0 22px; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
  .credential-card ul:last-child { margin-bottom: 0; }
  .credential-card li { font-size: 14px; line-height: 1.5; color: var(--ink-soft); padding-left: 16px; position: relative; }
  .credential-card li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 6px; height: 1px; background: var(--maroon); }
  .also-by { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--paper-line); font-size: 13.5px; color: var(--ink-faint); font-style: italic; }

  /* ============ FOOTER ============ */
  footer { background: var(--ink); color: var(--paper); }
  .footer-inner { padding: 56px 0 40px; display: flex; flex-direction: column; gap: 34px; }
  .footer-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; align-items: flex-start; }
  .footer-mark { display: flex; align-items: center; gap: 12px; }
  .footer-mark img { height: 26px; filter: brightness(0) invert(1); opacity: 0.92; }
  .footer-mark span { font-family: var(--sans); font-weight: 700; font-size: 14px; letter-spacing: 0.03em; }
  .footer-tagline { font-family: var(--sans); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(251,248,243,0.55); max-width: 30ch; }
  .footer-links { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; font-family: var(--sans); font-size: 13px; font-weight: 600; }
  .footer-links a { text-decoration: none; color: rgba(251,248,243,0.75); }
  .footer-links a:hover { color: var(--paper); }
  .footer-bottom { border-top: 1px solid rgba(251,248,243,0.14); padding-top: 22px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-family: var(--sans); font-size: 12px; color: rgba(251,248,243,0.5); }

  /* reveal on scroll */
  .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
  .reveal.in { opacity: 1; transform: translateY(0); }
  @media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

  .kit-decor { position: absolute; inset: 0; pointer-events: none; opacity: 0.5; }