/* =========================================================
     TOKENS
     ========================================================= */
  :root {
    --cream:     #f4ede0;
    --cream-2:   #ece4d3;
    --cream-3:   #e1d7bf;
    --paper:     #faf6ec;
    --ink:       #161310;
    --ink-soft:  #2a2620;
    --ink-50:    rgba(22,19,16,0.55);
    --ink-25:    rgba(22,19,16,0.22);
    --rust:      #c0511c;
    --rust-soft: #d9764a;
    --navy:      #1a1f33;
    --rule:      rgba(22,19,16,0.18);
    --rule-2:    rgba(22,19,16,0.10);

    --grot: "Hanken Grotesk", -apple-system, system-ui, sans-serif;
    --mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;

    --pad-x: clamp(20px, 5vw, 80px);
    --max:   1320px;
  }

  *, *::before, *::after { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: var(--grot);
    background: var(--cream);
    color: var(--ink);
    font-feature-settings: "ss01","cv11";
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
  }
  ::selection { background: var(--rust); color: var(--paper); }

  a { color: inherit; text-decoration: none; }
  button { font: inherit; cursor: pointer; }

  .page-mono {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-weight: 500;
  }
  .page-mono.dim  { opacity: 0.55; }
  .page-mono.dim2 { opacity: 0.35; }
  .page-mono.rust { color: var(--rust); }

  em { font-style: italic; }
  i  { font-style: italic; }
  b, strong { font-weight: 700; }

  /* =========================================================
     TOP BAR
     ========================================================= */
  .topbar {
    position: sticky; top: 0; z-index: 60;
    background: rgba(244,237,224,0.88);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
  .topbar-inner {
    max-width: var(--max); margin: 0 auto;
    padding: 14px var(--pad-x);
    display: flex; align-items: center; justify-content: space-between;
    gap: 24px;
  }
  .topbar-rule { height: 1px; background: var(--rule); }
  .brand { display: flex; align-items: center; gap: 12px; }
  .brand-mark {
    display: inline-flex; align-items: center; justify-content: center;
    width: 28px; height: 28px;
    background: var(--ink); color: var(--cream);
    font-family: var(--mono); font-weight: 700; font-size: 12px;
    letter-spacing: 0.05em;
  }
  .brand-mark.big { width: 56px; height: 56px; font-size: 22px; }
  .brand-words { display: flex; flex-direction: column; line-height: 1; }
  .brand-words-1, .brand-words-2 {
    font-family: var(--mono);
    font-size: 11px; letter-spacing: 0.16em; font-weight: 600;
  }
  .brand-words-2 { color: var(--rust); }
  .brand-words-1.big, .brand-words-2.big {
    font-size: 18px; letter-spacing: 0.14em;
  }
  .topnav {
    display: flex; align-items: center; gap: 28px;
  }
  .topnav a {
    font-family: var(--mono); font-size: 11px;
    letter-spacing: 0.14em; text-transform: uppercase;
    opacity: 0.7; transition: opacity .2s;
  }
  .topnav a:hover { opacity: 1; }
  .topnav-cta {
    background: var(--ink); color: var(--cream) !important;
    padding: 10px 16px; opacity: 1 !important;
  }
  .topnav-cta:hover { background: var(--rust); }

  /* =========================================================
     HERO
     ========================================================= */
  .hero {
    padding: clamp(40px, 7vw, 110px) var(--pad-x) 0;
    max-width: var(--max); margin: 0 auto;
    position: relative;
  }
  .hero-grid {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: clamp(40px, 6vw, 96px);
    align-items: start;
  }
  .hero-meta {
    grid-column: 1 / -1;
    display: flex; justify-content: space-between;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--rule);
    margin-bottom: clamp(40px, 6vw, 80px);
  }
  .hero-cover-col { display: flex; flex-direction: column; gap: 18px; }
  .cover-frame {
    position: relative;
    aspect-ratio: 667 / 930;
    width: 100%;
    transition: transform .6s cubic-bezier(.2,.7,.2,1);
    transform-origin: center bottom;
  }
  .cover-frame.hover {
    transform: translateY(-12px) rotate(-1.2deg);
  }
  .cover-img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    box-shadow:
      0 1px 0 rgba(0,0,0,0.06),
      0 20px 40px -20px rgba(22,19,16,0.35),
      0 60px 100px -40px rgba(22,19,16,0.25);
  }
  .cover-spine {
    position: absolute; left: 0; top: 0; bottom: 0;
    width: 6px;
    background: linear-gradient(90deg,
      rgba(0,0,0,0.18), rgba(0,0,0,0) 60%);
  }
  .cover-shadow {
    position: absolute; left: 4%; right: 4%; bottom: -8px;
    height: 24px;
    background: radial-gradient(50% 100% at 50% 0%, rgba(22,19,16,0.35), rgba(22,19,16,0) 70%);
    filter: blur(6px);
    z-index: -1;
  }
  .cover-caption {
    display: flex; justify-content: center;
    opacity: 0.55;
  }
  .hero-words { padding-top: 4px; }
  .hero-eyebrow {
    font-family: var(--mono); font-size: 12px;
    letter-spacing: 0.16em; text-transform: uppercase;
    color: var(--rust); margin: 0 0 28px;
  }
  .hero-title {
    margin: 0;
    font-family: var(--grot);
    font-weight: 900;
    font-size: clamp(48px, 7vw, 108px);
    line-height: 0.92;
    letter-spacing: -0.035em;
    display: flex; flex-direction: column;
    color: var(--ink);
  }
  .hero-title span { display: block; }
  .hero-rust { color: var(--rust); font-style: italic; font-weight: 800; }
  .hero-meta-row {
    display: grid;
    grid-template-columns: repeat(3, auto);
    gap: clamp(20px, 4vw, 48px);
    margin: clamp(36px, 5vw, 56px) 0 28px;
    padding-top: 28px;
    border-top: 1px solid var(--rule);
  }
  .hero-stat {
    font-family: var(--grot);
    font-weight: 800;
    font-size: clamp(28px, 3vw, 40px);
    letter-spacing: -0.03em;
    line-height: 1;
    margin-top: 6px;
    display: flex; align-items: baseline; gap: 8px;
  }
  .hero-stat-sub {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    font-weight: 500;
    color: var(--rust);
    text-transform: uppercase;
  }
  .hero-ctas {
    display: flex; flex-wrap: wrap; gap: 12px;
    margin-top: 8px;
  }
  .btn-primary {
    display: inline-flex; align-items: center;
    background: var(--ink); color: var(--cream);
    padding: 16px 22px;
    font-weight: 600;
    letter-spacing: -0.01em;
    transition: background .2s, transform .2s;
  }
  .btn-primary:hover { background: var(--rust); transform: translateY(-1px); }
  .btn-ghost {
    display: inline-flex; align-items: center;
    padding: 16px 22px;
    border: 1px solid var(--ink);
    font-weight: 600;
    letter-spacing: -0.01em;
    transition: background .2s, color .2s;
  }
  .btn-ghost:hover { background: var(--ink); color: var(--cream); }

  /* Hero scrolling strip */
  .hero-strip {
    margin: clamp(60px, 8vw, 120px) calc(var(--pad-x) * -1) 0;
    overflow: hidden;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    background: var(--cream);
  }
  .hero-strip-track {
    display: flex; gap: 0;
    animation: marquee 60s linear infinite;
    white-space: nowrap;
  }
  .hero-strip-row {
    display: inline-flex; align-items: center; gap: 28px;
    padding: 22px 28px;
    font-family: var(--grot);
    font-weight: 800;
    font-size: clamp(28px, 3vw, 42px);
    letter-spacing: -0.02em;
  }
  .hero-strip-row .dot { color: var(--rust); font-size: 14px; transform: translateY(-4px); }
  @keyframes marquee {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
  }

  /* =========================================================
     SAMPLE PREVIEWER (hero column)
     ========================================================= */
  .sample-previewer {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }
  .sample-toprail {
    display: flex; justify-content: space-between;
    opacity: 0.55;
    padding: 0 2px;
  }
  .sample-stage {
    position: relative;
    aspect-ratio: 595 / 842; /* A4 */
    width: 100%;
    background: var(--paper);
    box-shadow:
      0 1px 0 rgba(0,0,0,0.06),
      0 20px 40px -20px rgba(22,19,16,0.32),
      0 60px 100px -40px rgba(22,19,16,0.22);
    overflow: hidden;
  }
  .sample-shadow {
    position: absolute; left: 4%; right: 4%; bottom: -10px;
    height: 26px;
    background: radial-gradient(50% 100% at 50% 0%, rgba(22,19,16,0.35), rgba(22,19,16,0) 70%);
    filter: blur(8px);
    z-index: -1;
  }
  .sample-page-wrap {
    position: absolute; inset: 0;
    transform-origin: left center;
  }
  .sample-page-wrap.flip-fwd { animation: sampleInFwd .5s cubic-bezier(.2,.7,.2,1); }
  .sample-page-wrap.flip-bwd { animation: sampleInBwd .5s cubic-bezier(.2,.7,.2,1); }
  @keyframes sampleInFwd {
    from { transform: translateX(18px); opacity: 0.5; }
    to   { transform: translateX(0);    opacity: 1; }
  }
  @keyframes sampleInBwd {
    from { transform: translateX(-18px); opacity: 0.5; }
    to   { transform: translateX(0);     opacity: 1; }
  }
  .sample-page-img {
    width: 100%; height: 100%;
    object-fit: contain;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
  }
  .sample-skeleton {
    position: absolute; inset: 0;
    padding: 14% 12%;
    display: flex; flex-direction: column; gap: 14px;
    background:
      linear-gradient(180deg, rgba(0,0,0,0.02), transparent 30%),
      var(--paper);
  }
  .sk-line {
    height: 14px;
    background: linear-gradient(90deg, rgba(22,19,16,0.06), rgba(22,19,16,0.12), rgba(22,19,16,0.06));
    background-size: 200% 100%;
    animation: skShimmer 1.6s ease-in-out infinite;
  }
  .sk-line.w90 { width: 90%; }
  .sk-line.w85 { width: 85%; }
  .sk-line.w80 { width: 80%; }
  .sk-line.w70 { width: 70%; }
  .sk-line.w60 { width: 60%; }
  .sk-line.w55 { width: 55%; }
  .sk-line.w50 { width: 50%; }
  @keyframes skShimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
  }
  .sample-loading-overlay {
    position: absolute; inset: 0;
    background:
      linear-gradient(90deg, transparent 0%, rgba(250,246,236,0.5) 40%, transparent 100%);
    background-size: 200% 100%;
    animation: skShimmer 1.6s ease-in-out infinite;
    pointer-events: none;
  }
  .sample-edge {
    position: absolute; top: 0; bottom: 0;
    width: 18%;
    background: transparent;
    border: 0;
    cursor: pointer;
    display: flex; align-items: center;
    color: rgba(22,19,16,0.0);
    transition: background .25s, color .25s;
  }
  .sample-edge:disabled { cursor: not-allowed; }
  .sample-edge-l { left: 0; justify-content: flex-start; padding-left: 12px; }
  .sample-edge-r { right: 0; justify-content: flex-end; padding-right: 12px; }
  .sample-edge:hover:not(:disabled) {
    color: var(--ink);
  }
  .sample-edge-l:hover:not(:disabled) {
    background: linear-gradient(90deg, rgba(250,246,236,0.7), transparent);
  }
  .sample-edge-r:hover:not(:disabled) {
    background: linear-gradient(270deg, rgba(250,246,236,0.7), transparent);
  }
  .edge-arrow {
    font-family: var(--grot);
    font-weight: 300;
    font-size: 48px;
    line-height: 1;
    transition: transform .2s;
  }
  .sample-edge-l:hover:not(:disabled) .edge-arrow { transform: translateX(-2px); }
  .sample-edge-r:hover:not(:disabled) .edge-arrow { transform: translateX(2px); }

  .sample-controls {
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px;
    padding-top: 4px;
  }
  .sample-btn {
    display: inline-flex; align-items: center; gap: 6px;
    background: transparent;
    border: 1px solid var(--ink);
    padding: 8px 14px;
    font: 600 12px/1 var(--grot);
    letter-spacing: -0.01em;
    color: var(--ink);
    transition: background .2s, color .2s, opacity .2s;
  }
  .sample-btn:hover:not(:disabled) { background: var(--ink); color: var(--cream); }
  .sample-btn:disabled { opacity: 0.25; cursor: not-allowed; }
  .sample-progress {
    flex: 1;
    display: flex; gap: 4px;
    justify-content: center;
  }
  .sample-tick {
    flex: 1; max-width: 24px; min-width: 8px;
    height: 3px;
    background: var(--ink-25);
    border: 0; padding: 0;
    cursor: pointer;
    transition: background .25s, transform .25s, height .25s;
  }
  .sample-tick.done   { background: var(--ink); }
  .sample-tick.active { background: var(--rust); height: 5px; }
  .sample-tick:hover { transform: scaleY(1.5); }

  .sample-end-cta {
    display: flex; align-items: center; justify-content: space-between;
    gap: 14px;
    padding: 14px 16px;
    background: var(--ink);
    color: var(--cream);
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transform: translateY(-8px);
    transition: max-height .45s, opacity .35s, transform .35s, padding .35s;
    padding-top: 0; padding-bottom: 0;
  }
  .sample-end-cta.show {
    max-height: 160px;
    opacity: 1;
    transform: translateY(0);
    padding-top: 14px;
    padding-bottom: 14px;
  }
  .sample-end-text {
    display: flex; flex-direction: column; gap: 4px; line-height: 1.15;
    min-width: 0;
  }
  .sample-end-text .page-mono { color: var(--rust); }
  .sample-end-h {
    font-weight: 700;
    font-size: 16px;
    letter-spacing: -0.01em;
  }
  .sample-dl-btn {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--rust); color: var(--cream);
    padding: 12px 16px;
    font: 600 13px/1 var(--grot);
    letter-spacing: -0.005em;
    transition: background .2s, transform .2s;
    white-space: nowrap;
  }
  .sample-dl-btn:hover { background: var(--rust-soft); transform: translateY(-1px); }
  .sample-dl-btn.ghost {
    background: transparent;
    border: 1px solid rgba(244,237,224,0.4);
  }
  .sample-dl-btn.ghost:hover {
    background: rgba(244,237,224,0.08);
    border-color: rgba(244,237,224,0.7);
    transform: translateY(-1px);
  }

  .sample-end-cta.state-gating {
    flex-direction: column;
    align-items: stretch;
  }
  .sample-end-cta.state-gating.show {
    max-height: 240px;
    padding-top: 16px;
    padding-bottom: 16px;
  }
  .sample-gate {
    display: flex; flex-direction: column;
    gap: 10px;
    width: 100%;
  }
  .sample-gate-head {
    display: flex; flex-direction: column;
    gap: 4px; line-height: 1.15;
  }
  .sample-gate-head .page-mono { color: var(--rust); }
  .sample-gate-row {
    display: flex; gap: 8px; align-items: stretch;
    flex-wrap: wrap;
  }
  .sample-gate-input {
    flex: 1; min-width: 180px;
    background: transparent;
    border: 0;
    border-bottom: 2px solid rgba(244,237,224,0.6);
    padding: 8px 0;
    font: 500 18px/1 var(--grot);
    letter-spacing: -0.01em;
    color: var(--cream);
    outline: none;
    transition: border-color .2s;
  }
  .sample-gate-input::placeholder { color: rgba(244,237,224,0.35); }
  .sample-gate-input:focus { border-bottom-color: var(--rust); }
  .sample-gate-submit {
    background: var(--rust); color: var(--cream);
    border: 0;
    padding: 10px 16px;
    font: 600 13px/1 var(--grot);
    letter-spacing: -0.005em;
    transition: background .2s, transform .2s;
    white-space: nowrap;
  }
  .sample-gate-submit:hover { background: var(--rust-soft); transform: translateY(-1px); }
  .sample-gate-fine {
    display: flex; justify-content: space-between; align-items: center;
    gap: 10px;
    margin-top: 2px;
    opacity: 0.55;
  }
  .sample-gate-err {
    font-family: var(--mono); font-size: 11px;
    letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--rust-soft);
    opacity: 1;
  }
  .sample-gate-back {
    background: transparent; border: 0; padding: 0;
    font-family: var(--mono); font-size: 11px;
    letter-spacing: 0.14em; text-transform: uppercase;
    color: rgba(244,237,224,0.6);
    cursor: pointer;
    transition: color .2s;
  }
  .sample-gate-back:hover { color: var(--cream); }
  .sample-gate-email {
    font-style: italic; color: var(--rust-soft);
  }

  /* =========================================================
     DIGEST — pocket companion
     ========================================================= */
  .digest {
    padding: clamp(80px, 10vw, 140px) 0 clamp(60px, 7vw, 100px);
    background: var(--cream);
  }
  .digest-grid {
    max-width: var(--max); margin: 0 auto;
    padding: 0 var(--pad-x);
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: clamp(40px, 6vw, 96px);
    align-items: start;
  }
  .digest-eyebrow {
    color: var(--rust);
    margin: 0 0 16px;
  }
  .digest-lead {
    font-size: clamp(17px, 1.3vw, 20px);
    line-height: 1.55;
    color: var(--ink-soft);
    margin: 0 0 36px;
    max-width: 540px;
    text-wrap: pretty;
  }
  .digest-blocks {
    padding-top: 24px;
    border-top: 1px solid var(--rule);
  }
  .digest-blocks-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px 28px;
    margin-top: 16px;
  }
  .digest-block {
    display: grid;
    grid-template-columns: 32px 1fr;
    gap: 12px;
    align-items: baseline;
  }
  .digest-block-n { color: var(--rust); }
  .digest-block-t {
    font-weight: 700;
    font-size: clamp(16px, 1.2vw, 18px);
    letter-spacing: -0.015em;
    color: var(--ink);
  }
  .digest-block-d {
    font-size: 13px;
    line-height: 1.45;
    color: var(--ink-soft);
    opacity: 0.78;
    margin-top: 4px;
  }
  .digest-quicktest {
    margin-top: 32px;
    padding: 24px;
    background: var(--paper);
    border-left: 3px solid var(--rust);
    display: flex; flex-direction: column;
    gap: 12px;
  }
  .digest-quicktest-q {
    margin: 0;
    font-family: var(--grot);
    font-weight: 600;
    font-style: italic;
    font-size: clamp(18px, 1.5vw, 22px);
    letter-spacing: -0.015em;
    color: var(--ink);
    line-height: 1.3;
    text-wrap: pretty;
  }
  .digest-quicktest-answers {
    display: flex; flex-direction: column;
    gap: 6px;
    font-size: 15px;
    color: var(--ink);
  }
  .digest-quicktest-note {
    margin: 4px 0 0;
    font-size: 13px;
    line-height: 1.5;
    color: var(--ink-soft);
    opacity: 0.7;
  }
  .digest-vs {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--rule);
    display: grid;
    grid-template-columns: 1fr 28px 1fr;
    align-items: center;
    gap: 14px;
  }
  .digest-vs-big {
    font-family: var(--grot);
    font-weight: 900;
    font-size: clamp(36px, 4vw, 56px);
    line-height: 1;
    letter-spacing: -0.035em;
    margin-top: 6px;
    color: var(--ink);
  }
  .digest-vs-big.rust { color: var(--rust); font-style: italic; font-weight: 800; }
  .digest-vs-sep {
    font-family: var(--grot);
    font-weight: 300;
    font-size: 28px;
    text-align: center;
    color: var(--ink-25);
  }

  /* =========================================================
     DIGEST BANNER — cross-sell on book page
     ========================================================= */
  .digest-banner {
    padding: clamp(60px, 7vw, 100px) 0;
    background: var(--cream-2);
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
  }
  .digest-banner-inner {
    max-width: var(--max); margin: 0 auto;
    padding: 0 var(--pad-x);
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: clamp(28px, 4vw, 64px);
    align-items: center;
  }
  .digest-banner-h {
    margin: 16px 0 16px;
    font-family: var(--grot);
    font-weight: 800;
    font-size: clamp(32px, 4vw, 56px);
    line-height: 1.02;
    letter-spacing: -0.03em;
    text-wrap: pretty;
  }
  .digest-banner-h em { color: var(--rust); font-style: italic; font-weight: 800; }
  .digest-banner-lead {
    margin: 0;
    font-size: clamp(16px, 1.2vw, 19px);
    line-height: 1.55;
    color: var(--ink-soft);
    max-width: 52ch;
  }
  .digest-banner-right { text-align: right; }
  .digest-banner-btn {
    display: inline-flex; align-items: center;
    background: var(--ink); color: var(--cream);
    padding: 18px 26px;
    font-weight: 600;
    font-size: clamp(16px, 1.3vw, 18px);
    letter-spacing: -0.01em;
    transition: background .2s, transform .2s;
  }
  .digest-banner-btn:hover { background: var(--rust); transform: translateY(-1px); }
  @media (max-width: 980px) {
    .digest-banner-inner { grid-template-columns: 1fr; }
    .digest-banner-right { text-align: left; }
  }

  /* Studio row — companion variant */
  .studio-row.companion {
    background: linear-gradient(90deg, rgba(183,61,32,0.08), transparent 50%);
    border-bottom-color: rgba(244,237,224,0.4);
  }
  .studio-row.companion .page-mono { color: var(--rust); }
  .studio-row.companion .studio-t { font-style: italic; }

  /* =========================================================
     QUICK TEST decision block (used on digest page)
     ========================================================= */
  .quicktest-decision {
    display: flex; flex-direction: column;
    gap: 8px;
    margin-top: 10px;
    padding: 12px 16px;
    background: var(--paper);
    border: 1px solid var(--rule);
  }
  .quicktest-d-row {
    display: flex; align-items: baseline; gap: 8px;
    font-size: clamp(14px, 1.1vw, 16px);
    line-height: 1.45;
  }
  .quicktest-d-row em {
    color: var(--rust);
    font-style: italic;
    font-weight: 600;
  }

  /* =========================================================
     BOOK RELATION (digest page)
     ========================================================= */
  .relation {
    padding: clamp(60px, 8vw, 120px) 0;
    background: var(--cream-2);
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
  }
  .relation-grid {
    max-width: var(--max); margin: 0 auto;
    padding: 0 var(--pad-x);
    display: grid;
    grid-template-columns: 1fr 50px 1fr;
    gap: clamp(24px, 4vw, 56px);
    align-items: stretch;
    opacity: 0; transform: translateY(10px);
    transition: opacity 1s, transform 1s;
  }
  .relation-grid.in-view { opacity: 1; transform: translateY(0); }
  .relation-col {
    padding: clamp(28px, 4vw, 44px);
    background: var(--paper);
    border: 1px solid var(--rule);
    display: flex; flex-direction: column;
    gap: 14px;
  }
  .relation-col.rust {
    border-color: var(--rust);
    background: linear-gradient(180deg, rgba(192,81,28,0.10), rgba(192,81,28,0.04) 60%, var(--paper));
    box-shadow: 0 0 0 1px var(--rust);
  }
  .relation-col.rust .page-mono { color: var(--rust); }
  .relation-h {
    margin: 4px 0 0;
    font-family: var(--grot);
    font-weight: 800;
    font-size: clamp(24px, 2.4vw, 36px);
    line-height: 1;
    letter-spacing: -0.025em;
  }
  .relation-col.rust .relation-h { color: var(--rust); font-style: italic; }
  .relation-d {
    margin: 0;
    font-size: clamp(15px, 1.15vw, 17px);
    line-height: 1.55;
    color: var(--ink-soft);
    text-wrap: pretty;
  }
  .relation-d b { color: var(--ink); }
  .relation-col.rust .relation-d b { color: var(--rust); }
  .relation-link {
    margin-top: auto;
    padding-top: 14px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink);
    border-top: 1px solid var(--rule);
    transition: color .2s;
  }
  .relation-col.rust .relation-link { color: var(--rust); }
  .relation-link:hover { color: var(--rust); }
  .relation-sep {
    text-align: center;
    font-family: var(--grot);
    font-weight: 300;
    font-size: clamp(40px, 4vw, 64px);
    color: var(--ink-25);
    padding-top: clamp(40px, 6vw, 80px);
  }
  .relation-note {
    max-width: 720px; margin: clamp(40px, 5vw, 64px) auto 0;
    padding: 0 var(--pad-x);
    text-align: center;
  }
  .relation-note p {
    margin: 0;
    font-family: var(--grot);
    font-style: italic;
    font-weight: 500;
    font-size: clamp(17px, 1.4vw, 22px);
    line-height: 1.5;
    color: var(--ink);
    text-wrap: pretty;
  }
  .relation-note b { font-style: normal; color: var(--rust); }

  @media (max-width: 980px) {
    .relation-grid { grid-template-columns: 1fr; }
    .relation-sep { padding-top: 0; transform: rotate(90deg); justify-self: start; }
  }

  .sample-page-cover {
    inset: 0 !important;
    width: 100% !important;
    height: 100% !important;
    object-fit: cover;
    object-position: center;
  }

  /* FREE SAMPLE badge — sticker on top-right of cover, used inside the previewer's page-1 */
  .sample-page-badge {
    position: absolute;
    top: 20px; right: -42px;
    transform: rotate(35deg);
    background: var(--rust);
    color: var(--cream);
    font-family: var(--mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.18em;
    padding: 6px 50px;
    box-shadow: 0 8px 16px -8px rgba(22,19,16,0.4);
    z-index: 2;
    pointer-events: none;
    text-transform: uppercase;
  }

  /* =========================================================
     ZOOM LIGHTBOX
     ========================================================= */
  .sample-page-img.zoomable {
    cursor: zoom-in;
  }
  .sample-zoom {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(22,19,16,0.92);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    padding: clamp(40px, 6vw, 80px);
    animation: zoomFadeIn .25s ease;
  }
  @keyframes zoomFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }
  .sample-zoom-stage {
    position: relative;
    max-width: min(900px, 100%);
    max-height: 92vh;
    aspect-ratio: 595 / 842;
    background: var(--paper);
    box-shadow: 0 40px 80px -20px rgba(0,0,0,0.6);
    cursor: zoom-out;
    animation: zoomScaleIn .35s cubic-bezier(.2,.7,.2,1);
  }
  @keyframes zoomScaleIn {
    from { opacity: 0; transform: scale(0.94); }
    to { opacity: 1; transform: scale(1); }
  }
  .sample-zoom-img {
    width: 100%; height: 100%;
    object-fit: contain;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
  }
  .sample-page-badge.zoom {
    top: 26px; right: -52px;
    font-size: 12px;
    padding: 8px 60px;
  }
  .sample-zoom-close {
    position: absolute;
    top: 20px; right: 24px;
    background: transparent;
    border: 1px solid rgba(244,237,224,0.4);
    color: var(--cream);
    width: 44px; height: 44px;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    transition: background .2s, border-color .2s, transform .2s;
  }
  .sample-zoom-close:hover {
    background: rgba(244,237,224,0.08);
    border-color: var(--cream);
    transform: rotate(90deg);
  }
  .sample-zoom-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: 0;
    color: var(--cream);
    font-family: var(--grot);
    font-weight: 300;
    font-size: 64px;
    line-height: 1;
    padding: 16px 24px;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity .2s, transform .2s;
  }
  .sample-zoom-nav:hover:not(:disabled) { opacity: 1; }
  .sample-zoom-nav:disabled { opacity: 0.15; cursor: not-allowed; }
  .sample-zoom-nav.prev { left: clamp(8px, 2vw, 32px); }
  .sample-zoom-nav.next { right: clamp(8px, 2vw, 32px); }
  .sample-zoom-nav.prev:hover:not(:disabled) { transform: translateY(-50%) translateX(-4px); }
  .sample-zoom-nav.next:hover:not(:disabled) { transform: translateY(-50%) translateX(4px); }
  .sample-zoom-foot {
    position: absolute;
    bottom: 24px; left: 50%;
    transform: translateX(-50%);
    color: rgba(244,237,224,0.55);
  }

  /* =========================================================
     Section head
     ========================================================= */
  .section-head {
    display: flex; align-items: center; gap: 16px;
    max-width: var(--max); margin: 0 auto;
    padding: 0 var(--pad-x) 28px;
    opacity: 0; transform: translateY(8px);
    transition: opacity .8s, transform .8s;
  }
  .section-head.in-view { opacity: 1; transform: translateY(0); }
  .section-num { color: var(--rust); }
  .section-rule { flex: 1; height: 1px; background: var(--rule); }
  .section-head.rust .section-num { color: var(--rust); }
  .section-head.white .section-num { color: var(--cream); }
  .section-head.white .section-rule { background: rgba(244,237,224,0.25); }
  .section-head.white .section-label { color: var(--cream); }

  .section-h {
    font-family: var(--grot);
    font-weight: 800;
    font-size: clamp(34px, 4vw, 56px);
    line-height: 1.02;
    letter-spacing: -0.025em;
    margin: 0 0 24px;
    text-wrap: pretty;
    opacity: 0; transform: translateY(8px);
    transition: opacity 1s, transform 1s;
  }
  .section-h.in-view { opacity: 1; transform: translateY(0); }
  .section-h em { color: var(--rust); font-style: italic; }

  /* =========================================================
     PREMISE
     ========================================================= */
  .premise {
    padding: clamp(80px, 10vw, 140px) 0 clamp(60px, 7vw, 100px);
  }
  .premise-grid {
    max-width: var(--max); margin: 0 auto;
    padding: 0 var(--pad-x);
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: clamp(40px, 6vw, 96px);
    align-items: start;
  }
  .premise-lead {
    font-size: clamp(18px, 1.4vw, 22px);
    line-height: 1.5;
    margin: 0 0 20px;
    text-wrap: pretty;
  }
  .premise-pull {
    display: block; margin-top: 8px;
    font-style: italic; color: var(--rust);
    font-size: clamp(20px, 1.6vw, 26px);
    line-height: 1.35;
    font-weight: 500;
  }

  .premise-pairs {
    max-width: var(--max); margin: clamp(60px, 8vw, 120px) auto 0;
    padding: 0 var(--pad-x);
    opacity: 0; transform: translateY(10px);
    transition: opacity 1s, transform 1s;
  }
  .premise-pairs.in-view { opacity: 1; transform: translateY(0); }
  .pair-head {
    padding-bottom: 18px;
    border-bottom: 1px solid var(--rule);
    margin-bottom: 12px;
    opacity: 0.55;
  }
  .pair-list {
    display: grid; grid-template-columns: 1fr;
  }
  .pair {
    display: grid;
    grid-template-columns: 60px 1fr 1fr 1.1fr;
    align-items: center;
    gap: 24px;
    padding: 26px 0;
    border-bottom: 1px solid var(--rule);
    font-size: clamp(17px, 1.3vw, 20px);
  }
  .pair-n { opacity: 0.55; }
  .pair-wrong { color: var(--ink-soft); opacity: 0.6; text-decoration: line-through; text-decoration-color: rgba(22,19,16,0.3); }
  .pair-right { font-weight: 600; }
  .pair-why  { color: var(--ink-soft); font-size: clamp(14px, 1vw, 16px); line-height: 1.5; opacity: 0.75; }
  .wr-tag {
    display: inline-flex; align-items: center; justify-content: center;
    width: 20px; height: 20px;
    font-family: var(--mono); font-weight: 700; font-size: 14px;
    margin-right: 8px;
    transform: translateY(-1px);
  }
  .wr-tag.wrong { color: var(--rust); }
  .wr-tag.right { color: #2e6a3a; }

  /* =========================================================
     ANATOMY
     ========================================================= */
  .anatomy {
    padding: clamp(80px, 10vw, 140px) 0;
    background: var(--cream-2);
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
  }
  .anatomy-grid {
    max-width: var(--max); margin: 0 auto;
    padding: 0 var(--pad-x);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(40px, 6vw, 96px);
    align-items: start;
    opacity: 0; transform: translateY(10px);
    transition: opacity 1s, transform 1s;
  }
  .anatomy-grid.in-view { opacity: 1; transform: translateY(0); }
  .anatomy-lead {
    font-size: clamp(17px, 1.3vw, 20px);
    line-height: 1.55;
    margin: 0 0 36px;
    color: var(--ink-soft);
    text-wrap: pretty;
  }
  .anatomy-stats {
    display: grid;
    grid-template-columns: repeat(3, auto);
    gap: clamp(20px, 4vw, 48px);
    padding-top: 28px;
    border-top: 1px solid var(--rule);
  }
  .big-num {
    font-family: var(--grot);
    font-weight: 900;
    font-size: clamp(48px, 5vw, 72px);
    line-height: 1;
    letter-spacing: -0.04em;
    margin-bottom: 8px;
  }

  .anatomy-steps {
    list-style: none; margin: 0; padding: 0;
    border-top: 1px solid var(--rule);
  }
  .anatomy-step {
    border-bottom: 1px solid var(--rule);
    transition: background .25s;
  }
  .anatomy-step.open { background: var(--cream); }
  .anatomy-step-head {
    display: grid;
    grid-template-columns: 56px 1fr 24px;
    align-items: center;
    gap: 18px;
    padding: 18px 12px;
    width: 100%;
    background: transparent;
    border: 0;
    text-align: left;
    color: inherit;
    cursor: pointer;
    transition: padding-left .25s, background .25s;
  }
  .anatomy-step-head:hover { background: var(--cream); padding-left: 20px; }
  .anatomy-step.open .anatomy-step-head { padding-left: 20px; }
  .anatomy-n { color: var(--rust); }
  .anatomy-t {
    font-size: clamp(17px, 1.3vw, 20px);
    font-weight: 700;
    letter-spacing: -0.015em;
  }
  .anatomy-s {
    font-size: 14px;
    color: var(--ink-soft);
    opacity: 0.75;
    margin-top: 2px;
  }
  /* +/- toggle */
  .anatomy-toggle {
    position: relative;
    width: 16px; height: 16px;
    color: var(--ink-25);
    transition: color .25s, transform .35s cubic-bezier(.2,.7,.2,1);
  }
  .anatomy-toggle span {
    position: absolute; left: 0; right: 0; top: 50%;
    height: 1.5px; background: currentColor;
    transform: translateY(-50%);
    transition: transform .35s cubic-bezier(.2,.7,.2,1), opacity .25s;
  }
  .anatomy-toggle span:last-child { transform: translateY(-50%) rotate(90deg); }
  .anatomy-step:hover .anatomy-toggle { color: var(--ink); }
  .anatomy-toggle.open { color: var(--rust); transform: rotate(90deg); }
  .anatomy-toggle.open span:last-child { opacity: 0; transform: translateY(-50%) rotate(0); }

  /* accordion panel */
  .anatomy-panel {
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: max-height .5s cubic-bezier(.2,.7,.2,1), opacity .35s;
  }
  .anatomy-panel.open {
    max-height: 1200px;
    opacity: 1;
  }
  .anatomy-panel-inner {
    padding: 8px 20px 28px 86px;
    border-top: 1px dashed var(--rule);
    margin: 0 12px;
    display: flex; flex-direction: column;
    gap: 16px;
  }
  .anatomy-panel-head {
    display: flex; justify-content: space-between;
    padding-top: 14px;
    opacity: 0.55;
  }
  .anatomy-panel-body {
    display: flex; flex-direction: column; gap: 12px;
    font-size: clamp(14px, 1.1vw, 16px);
    line-height: 1.55;
    color: var(--ink-soft);
    max-width: 640px;
  }
  .anatomy-panel-body p { margin: 0; }
  .anatomy-panel-body b { color: var(--ink); }
  .anatomy-pull {
    border-left: 2px solid var(--rust);
    padding-left: 14px;
    font-style: italic;
    color: var(--rust);
    font-weight: 500;
  }
  .anatomy-pull.small { font-size: 13px; line-height: 1.5; }
  .anatomy-list-h {
    font-weight: 700;
    color: var(--ink);
    margin-top: 4px !important;
    font-size: 14px;
  }
  .anatomy-list {
    margin: 0; padding-left: 18px;
    display: flex; flex-direction: column; gap: 4px;
  }
  .anatomy-list.compact li { font-size: 14px; }
  .anatomy-rules {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 8px 18px;
    font-size: 14px;
    padding: 12px 16px;
    background: var(--paper);
    border: 1px solid var(--rule);
  }
  .anatomy-rules > div { display: flex; align-items: baseline; }
  .anatomy-mistakes {
    display: flex; flex-direction: column; gap: 14px;
  }
  .anatomy-m {
    padding-bottom: 12px;
    border-bottom: 1px dashed var(--rule);
  }
  .anatomy-m:last-child { border-bottom: 0; padding-bottom: 0; }
  .anatomy-m > div { font-size: 14px; line-height: 1.5; }
  .anatomy-m p { margin-top: 4px !important; font-size: 13px; }
  .anatomy-examples {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 14px 28px;
  }
  .anatomy-ex {
    display: flex; flex-direction: column; gap: 4px;
    font-size: 14px;
    line-height: 1.4;
    color: var(--ink);
  }
  .anatomy-natural {
    display: flex; flex-direction: column; gap: 14px;
  }
  .anatomy-n-row {
    padding: 10px 14px;
    background: var(--paper);
    border-left: 2px solid var(--rust);
    font-size: 14px;
    line-height: 1.4;
  }
  .anatomy-n-row > div { display: flex; gap: 10px; align-items: baseline; margin-bottom: 4px; color: var(--ink); }
  .anatomy-n-row > div .page-mono { flex-shrink: 0; }
  .anatomy-n-row p { margin-top: 4px !important; font-size: 13px; }
  .anatomy-takeaway {
    padding: 22px 24px;
    background: var(--ink);
    color: var(--cream);
    display: flex; flex-direction: column; gap: 8px;
  }
  .anatomy-takeaway p {
    margin: 0;
    font-size: clamp(18px, 1.6vw, 22px);
    font-weight: 600;
    font-style: italic;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--cream);
  }
  .anatomy-panel-nav {
    display: flex; justify-content: space-between;
    gap: 10px;
    padding-top: 6px;
    border-top: 1px solid var(--rule);
  }
  .anatomy-nav-btn {
    background: transparent;
    border: 0;
    padding: 4px 0;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-soft);
    cursor: pointer;
    transition: color .2s;
  }
  .anatomy-nav-btn:hover:not(:disabled) { color: var(--rust); }
  .anatomy-nav-btn:disabled { opacity: 0.25; cursor: not-allowed; }

  .anatomy-hint {
    display: flex; align-items: baseline;
    gap: 10px;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px dashed var(--rule);
    font-size: 14px;
    color: var(--ink-soft);
    line-height: 1.4;
  }
  .anatomy-hint .page-mono { color: var(--rust); flex-shrink: 0; }

  .parts-strip {
    max-width: var(--max); margin: clamp(60px, 8vw, 100px) auto 0;
    padding: 0 var(--pad-x);
    opacity: 0; transform: translateY(10px);
    transition: opacity 1s, transform 1s;
  }
  .parts-strip.in-view { opacity: 1; transform: translateY(0); }
  .parts-rows {
    margin-top: 18px;
    border-top: 1px solid var(--rule);
  }
  .parts-row {
    display: grid;
    grid-template-columns: 100px 1.2fr 2fr;
    align-items: center;
    gap: 24px;
    padding: 22px 0;
    border-bottom: 1px solid var(--rule);
    transition: padding-left .25s;
  }
  .parts-row:hover { padding-left: 12px; }
  .parts-p { color: var(--rust); }
  .parts-t {
    font-weight: 700;
    font-size: clamp(18px, 1.4vw, 22px);
    letter-spacing: -0.015em;
  }
  .parts-d { color: var(--ink-soft); opacity: 0.75; font-size: 15px; }
  .parts-row.bonus { background: linear-gradient(90deg, rgba(183,61,32,0.05), transparent 60%); }
  .parts-row.bonus .parts-p { font-weight: 700; }

  /* =========================================================
     QUOTES
     ========================================================= */
  .quotes {
    padding: clamp(80px, 10vw, 140px) 0;
    position: relative;
  }
  .quotes-stage {
    max-width: 920px; margin: 0 auto;
    padding: 0 var(--pad-x);
    position: relative;
    min-height: 320px;
    opacity: 0; transform: translateY(10px);
    transition: opacity 1s, transform 1s;
  }
  .quotes-stage.in-view { opacity: 1; transform: translateY(0); }
  .quotes-mark {
    position: absolute; left: var(--pad-x); top: -40px;
    font-family: "Hanken Grotesk", serif;
    font-style: italic;
    font-weight: 900;
    font-size: clamp(140px, 14vw, 200px);
    line-height: 0.7;
    color: var(--rust);
    opacity: 0.2;
    pointer-events: none;
  }
  .quote {
    position: absolute;
    top: 32px; left: var(--pad-x); right: var(--pad-x);
    margin: 0;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity .8s, transform .8s;
    pointer-events: none;
  }
  .quote.active { opacity: 1; transform: translateY(0); pointer-events: auto; position: relative; }
  .quote-text {
    margin: 0 0 28px;
    font-family: var(--grot);
    font-weight: 500;
    font-style: italic;
    font-size: clamp(22px, 2.4vw, 32px);
    line-height: 1.32;
    letter-spacing: -0.015em;
    text-wrap: pretty;
  }
  .quote-foot {
    display: flex; align-items: baseline; gap: 14px;
    flex-wrap: wrap;
  }
  .quote-who { font-weight: 700; letter-spacing: -0.01em; }
  .quote-role { opacity: 0.55; }
  .quote-dots {
    position: absolute; bottom: -60px; left: var(--pad-x);
    display: flex; gap: 8px;
  }
  .quote-dot {
    width: 28px; height: 2px;
    background: var(--ink-25);
    border: 0; padding: 0;
    transition: background .25s, transform .25s;
  }
  .quote-dot.active { background: var(--ink); }
  .quote-dot:hover { transform: scaleY(2); }
  .quotes-note {
    max-width: var(--max); margin: 100px auto 0;
    padding: 0 var(--pad-x);
    opacity: 0.45;
  }

  /* =========================================================
     EXCERPT
     ========================================================= */
  .excerpt {
    padding: clamp(80px, 10vw, 140px) 0 clamp(60px, 7vw, 100px);
    background: var(--cream-2);
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
  }
  .excerpt-intro {
    max-width: var(--max); margin: 0 auto;
    padding: 0 var(--pad-x) clamp(40px, 5vw, 64px);
    display: grid; grid-template-columns: 1.2fr 1fr;
    gap: clamp(40px, 6vw, 80px);
    align-items: end;
  }
  .excerpt-lead {
    font-size: clamp(16px, 1.2vw, 19px);
    line-height: 1.55;
    color: var(--ink-soft);
    margin: 0;
  }

  /* The excerpt reader */
  .excerpt-reader {
    max-width: 920px; margin: 0 auto;
    padding: 0 var(--pad-x);
    display: grid; gap: 16px;
  }
  .reader-rail {
    display: flex; justify-content: space-between;
    padding: 6px 4px;
    opacity: 0.55;
  }
  .reader-stage {
    position: relative;
    aspect-ratio: 1 / 1.35;
    perspective: 2400px;
  }
  .reader-shadow {
    position: absolute; left: 4%; right: 4%; bottom: -10px;
    height: 32px;
    background: radial-gradient(50% 100% at 50% 0%, rgba(22,19,16,0.32), rgba(22,19,16,0) 70%);
    filter: blur(8px);
    z-index: 0;
  }
  .reader-page-wrap {
    position: absolute; inset: 0;
    background: var(--paper);
    box-shadow:
      0 1px 0 rgba(0,0,0,0.06),
      0 30px 60px -30px rgba(22,19,16,0.35);
    transform-style: preserve-3d;
    transform-origin: left center;
  }
  .reader-page-wrap.flip-fwd  { animation: pageInFwd .55s cubic-bezier(.2,.7,.2,1); }
  .reader-page-wrap.flip-bwd  { animation: pageInBwd .55s cubic-bezier(.2,.7,.2,1); }
  @keyframes pageInFwd {
    from { transform: rotateY(-12deg) translateX(20px); opacity: 0.6; }
    to   { transform: rotateY(0)      translateX(0);    opacity: 1; }
  }
  @keyframes pageInBwd {
    from { transform: rotateY(12deg)  translateX(-20px); opacity: 0.6; }
    to   { transform: rotateY(0)      translateX(0);     opacity: 1; }
  }

  .book-page {
    position: absolute; inset: 0;
    padding: clamp(28px, 5%, 56px) clamp(32px, 6%, 64px);
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: 18px;
    font-family: var(--grot);
    color: var(--ink);
    background:
      radial-gradient(circle at 0% 0%, rgba(0,0,0,0.03), transparent 40%),
      var(--paper);
  }
  .page-header, .page-footer {
    display: flex; justify-content: space-between;
    opacity: 0.55;
  }
  .page-footer { border-top: 1px solid var(--rule-2); padding-top: 12px; }
  .page-header { border-bottom: 1px solid var(--rule-2); padding-bottom: 12px; }
  .page-body { display: flex; flex-direction: column; gap: 14px; overflow: hidden; }
  .page-eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--rust);
    margin: 0;
  }
  .page-h {
    font-family: var(--grot);
    font-weight: 800;
    font-size: clamp(22px, 2.6vw, 34px);
    line-height: 1.05;
    letter-spacing: -0.025em;
    margin: 0;
    text-wrap: pretty;
  }
  .page-h3 {
    font-family: var(--grot);
    font-weight: 700;
    font-size: clamp(14px, 1.2vw, 16px);
    letter-spacing: -0.01em;
    margin: 8px 0 0;
  }
  .page-lead {
    font-size: clamp(14px, 1.2vw, 17px);
    line-height: 1.45;
    margin: 0;
    color: var(--ink-soft);
    font-style: italic;
  }
  .page-rule { height: 1px; background: var(--rule); width: 40px; }
  .book-page p { margin: 0; font-size: clamp(13px, 1.05vw, 15px); line-height: 1.55; }
  .page-pull {
    border-left: 2px solid var(--rust);
    padding-left: 14px;
    font-style: italic;
    color: var(--rust);
    font-weight: 500;
  }
  .page-pull.small { font-size: 13px; line-height: 1.5; padding-left: 12px; }
  .mt { margin-top: 8px !important; }
  .muted { color: var(--ink-soft); opacity: 0.6; font-size: 13px; }

  .rule-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 10px 18px;
    margin-top: 4px;
    font-size: clamp(13px, 1.05vw, 15px);
  }
  .rule-grid b { font-weight: 800; }
  .sign {
    display: inline-block;
    width: 20px; height: 20px;
    text-align: center; line-height: 20px;
    font-family: var(--mono); font-weight: 700;
    margin-right: 8px; transform: translateY(-1px);
  }
  .sign.plus   { color: #2e6a3a; }
  .sign.minus  { color: var(--rust); }
  .sign.qmark  { color: var(--navy); }

  .page-list {
    margin: 4px 0 0; padding-left: 16px;
    font-size: clamp(13px, 1.05vw, 15px);
    line-height: 1.5;
  }
  .page-list li + li { margin-top: 6px; }

  .wr-row {
    display: flex; align-items: baseline; gap: 8px;
    margin-top: 4px;
    font-size: clamp(14px, 1.15vw, 17px);
  }
  .wr-row + .wr-row { margin-top: 4px; }

  .mistake {
    padding: 12px 0;
    border-bottom: 1px dashed var(--rule-2);
  }
  .mistake:last-child { border-bottom: 0; }
  .mistake > div { font-size: clamp(13px, 1.05vw, 15px); line-height: 1.4; }
  .mistake p { margin-top: 6px !important; }

  .glasses {
    display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
    margin: 10px 0;
  }
  .glass {
    border: 1px solid var(--ink);
    padding: 14px;
    background: var(--paper);
    display: flex; flex-direction: column; gap: 10px;
    position: relative;
  }
  .glass.open   { border-top-style: dashed; }
  .glass.closed { background: rgba(22,19,16,0.04); }
  .glass-cap {
    font-family: var(--mono); font-size: 10px;
    letter-spacing: 0.14em; opacity: 0.55;
  }
  .glass.closed .glass-cap { color: var(--rust); opacity: 0.85; }
  .glass-body { flex: 1; }
  .glass-label { font-size: 13px; line-height: 1.45; }
  .glass-foot {
    font-weight: 800; letter-spacing: -0.015em;
    border-top: 1px solid var(--rule); padding-top: 8px;
    font-size: 14px;
  }
  .glass.closed .glass-foot { color: var(--ink-soft); }

  .reader-controls {
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px;
    margin-top: 18px;
  }
  .reader-btn {
    display: inline-flex; align-items: center; gap: 8px;
    background: transparent;
    border: 1px solid var(--ink);
    padding: 10px 16px;
    font-family: var(--grot);
    font-weight: 600;
    font-size: 13px;
    letter-spacing: -0.01em;
    color: var(--ink);
    transition: background .2s, color .2s, opacity .2s;
  }
  .reader-btn:hover:not(:disabled) { background: var(--ink); color: var(--cream); }
  .reader-btn:disabled { opacity: 0.3; cursor: not-allowed; }
  .reader-dots { display: flex; gap: 8px; }
  .reader-dot {
    width: 28px; height: 2px;
    background: var(--ink-25);
    border: 0;
    transition: background .25s, transform .25s;
  }
  .reader-dot.active { background: var(--ink); height: 4px; }

  /* =========================================================
     STUDIO
     ========================================================= */
  .studio {
    background: var(--ink);
    color: var(--cream);
    padding: clamp(80px, 10vw, 140px) 0 clamp(60px, 8vw, 100px);
  }
  .studio .section-head .section-num { color: var(--rust); }
  .studio .section-head .section-rule { background: rgba(244,237,224,0.18); }
  .studio .section-head .section-label { color: var(--cream); opacity: 0.7; }

  .studio-header {
    max-width: var(--max); margin: 0 auto;
    padding: 0 var(--pad-x) clamp(40px, 6vw, 80px);
  }
  .studio-h {
    font-family: var(--grot);
    font-weight: 900;
    font-size: clamp(42px, 5.5vw, 80px);
    line-height: 0.98;
    letter-spacing: -0.03em;
    margin: 8px 0 28px;
    text-wrap: pretty;
  }
  .studio-h .rust { color: var(--rust); font-style: italic; font-weight: 800; }
  .studio-lead {
    font-size: clamp(17px, 1.3vw, 20px);
    line-height: 1.55;
    max-width: 720px;
    color: rgba(244,237,224,0.75);
    margin: 0;
    text-wrap: pretty;
  }
  .studio-list {
    max-width: var(--max); margin: 0 auto;
    padding: 0 var(--pad-x);
    border-top: 1px solid rgba(244,237,224,0.18);
    opacity: 0; transform: translateY(10px);
    transition: opacity 1s, transform 1s;
  }
  .studio-list.in-view { opacity: 1; transform: translateY(0); }
  .studio-row {
    display: grid;
    grid-template-columns: 130px 1.2fr 2fr 140px;
    align-items: center;
    gap: 24px;
    padding: 22px 0;
    border-bottom: 1px solid rgba(244,237,224,0.18);
    transition: padding-left .25s, background .25s;
  }
  .studio-row:hover { padding-left: 12px; background: rgba(244,237,224,0.03); }
  .studio-row.current {
    background: linear-gradient(90deg, rgba(183,61,32,0.18), transparent 50%);
    border-bottom-color: rgba(244,237,224,0.4);
  }
  .studio-row.current .page-mono { color: var(--rust); }
  .studio-t {
    font-weight: 800;
    font-size: clamp(20px, 1.6vw, 26px);
    letter-spacing: -0.02em;
  }
  .studio-row.current .studio-t { font-style: italic; }
  .studio-d { color: rgba(244,237,224,0.6); font-size: 14px; }
  .status { text-align: right; color: rgba(244,237,224,0.5); }
  .studio-row .dim2 { opacity: 0.45; }
  .studio-note {
    max-width: var(--max); margin: 56px auto 0;
    padding: 0 var(--pad-x);
    color: rgba(244,237,224,0.4);
  }

  /* =========================================================
     JOIN
     ========================================================= */
  .join {
    padding: clamp(80px, 10vw, 140px) 0 clamp(60px, 8vw, 100px);
    background: var(--cream);
  }
  .join-grid {
    max-width: var(--max); margin: 0 auto;
    padding: 0 var(--pad-x);
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: clamp(40px, 6vw, 96px);
    align-items: start;
    opacity: 0; transform: translateY(10px);
    transition: opacity 1s, transform 1s;
  }
  .join-grid.in-view { opacity: 1; transform: translateY(0); }
  .join-h {
    font-family: var(--grot);
    font-weight: 900;
    font-size: clamp(40px, 5vw, 68px);
    line-height: 1;
    letter-spacing: -0.03em;
    margin: 8px 0 24px;
    text-wrap: pretty;
  }
  .join-lead {
    font-size: clamp(17px, 1.3vw, 20px);
    line-height: 1.55;
    max-width: 540px;
    margin: 0 0 36px;
    color: var(--ink-soft);
    text-wrap: pretty;
  }
  .join-perks {
    display: flex; flex-direction: column; gap: 14px;
    border-top: 1px solid var(--rule);
    padding-top: 24px;
  }
  .join-perk {
    display: grid; grid-template-columns: 40px 1fr;
    gap: 16px; align-items: baseline;
    font-size: clamp(15px, 1.15vw, 18px);
    font-weight: 500;
    letter-spacing: -0.01em;
  }
  .join-perk .page-mono { color: var(--rust); opacity: 0.65; }

  .join-right {
    border: 1px solid var(--ink);
    padding: clamp(28px, 4vw, 48px);
    background: var(--paper);
  }
  .join-form { display: flex; flex-direction: column; gap: 12px; }
  .join-label { color: var(--ink); opacity: 0.6; }
  .join-row { display: flex; gap: 8px; flex-wrap: wrap; }
  .join-input {
    flex: 1; min-width: 200px;
    background: transparent;
    border: 0;
    border-bottom: 2px solid var(--ink);
    padding: 12px 0;
    font: 500 22px/1 var(--grot);
    letter-spacing: -0.015em;
    color: var(--ink);
    outline: none;
  }
  .join-input::placeholder { color: var(--ink-25); }
  .join-input:focus { border-bottom-color: var(--rust); }
  .join-btn {
    background: var(--ink); color: var(--cream);
    border: 0;
    padding: 12px 22px;
    font: 600 16px/1 var(--grot);
    letter-spacing: -0.01em;
    transition: background .2s, transform .2s;
  }
  .join-btn:hover { background: var(--rust); transform: translateY(-1px); }
  .join-err {
    color: var(--rust); font-size: 13px;
    margin-top: 4px;
  }
  .join-fine {
    margin-top: 14px;
    opacity: 0.5;
  }
  .join-done {
    display: flex; flex-direction: column; gap: 14px;
  }
  .join-done-tag { letter-spacing: 0.14em; }
  .join-done-h {
    margin: 0;
    font-family: var(--grot);
    font-weight: 800;
    font-size: clamp(28px, 3vw, 40px);
    line-height: 1.05;
    letter-spacing: -0.025em;
  }
  .join-done p { margin: 0; line-height: 1.5; }
  .join-back {
    align-self: flex-start;
    background: transparent;
    border: 0; padding: 0;
    font-family: var(--mono); font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--ink-soft); text-transform: uppercase;
    margin-top: 8px; cursor: pointer;
  }
  .join-back:hover { color: var(--rust); }

  .join-insta {
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px dashed var(--rule);
    color: var(--ink-soft);
    letter-spacing: 0.08em;
    text-transform: none;
    font-family: var(--mono);
    font-size: 12px;
    opacity: 0.75;
  }
  .join-insta b { color: var(--rust); }

  /* =========================================================
     FOOTER
     ========================================================= */
  .footer {
    background: var(--cream-2);
    border-top: 1px solid var(--rule);
    padding: clamp(60px, 7vw, 100px) 0 32px;
  }
  .footer-top, .footer-grid, .footer-bottom {
    max-width: var(--max); margin: 0 auto;
    padding: 0 var(--pad-x);
  }
  .footer-top {
    display: flex; align-items: center; justify-content: space-between;
    gap: 32px;
    padding-bottom: 36px;
    border-bottom: 1px solid var(--rule);
    flex-wrap: wrap;
  }
  .footer-brand { display: flex; align-items: center; gap: 16px; }
  .footer-tag {
    font-style: italic;
    font-size: clamp(16px, 1.3vw, 20px);
    color: var(--ink-soft);
    max-width: 360px;
    text-wrap: pretty;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: clamp(20px, 3vw, 48px);
    padding-top: 36px;
    padding-bottom: 36px;
  }
  .footer-grid.three {
    grid-template-columns: 2fr 1fr 1fr;
  }
  .footer-grid ul { list-style: none; margin: 12px 0 0; padding: 0; }
  .footer-grid li {
    padding: 0;
    font-size: 15px;
    color: var(--ink-soft);
  }
  .footer-grid li a {
    display: block;
    padding: 6px 0;
    color: var(--ink);
    transition: color .2s, transform .2s;
    position: relative;
  }
  .footer-grid li a::after {
    content: " ↗";
    font-family: var(--mono);
    font-size: 11px;
    opacity: 0;
    margin-left: 4px;
    transition: opacity .2s, transform .2s;
    display: inline-block;
  }
  .footer-grid li a:hover {
    color: var(--rust);
  }
  .footer-grid li a:hover::after {
    opacity: 0.7;
    transform: translate(2px, -2px);
  }
  .footer-grid li.dim2 {
    color: var(--ink-50);
    padding: 6px 0;
  }
  .footer-bottom {
    display: flex; justify-content: space-between;
    padding-top: 24px;
    border-top: 1px solid var(--rule);
    flex-wrap: wrap;
    gap: 12px;
  }

  /* =========================================================
     STICKY CTA
     ========================================================= */
  .sticky-cta {
    position: fixed;
    left: 16px; right: 16px; bottom: 16px;
    z-index: 80;
    transform: translateY(140%);
    transition: transform .5s cubic-bezier(.2,.7,.2,1);
    pointer-events: none;
  }
  .sticky-cta.show { transform: translateY(0); pointer-events: auto; }
  .sticky-inner {
    max-width: 720px; margin: 0 auto;
    background: var(--ink); color: var(--cream);
    padding: 14px 16px 14px 22px;
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px;
    box-shadow: 0 30px 60px -30px rgba(22,19,16,0.6);
  }
  .sticky-left {
    display: flex; flex-direction: column; gap: 2px; line-height: 1.1;
  }
  .sticky-left .page-mono { color: rgba(244,237,224,0.5); }
  .sticky-t {
    font-weight: 700;
    letter-spacing: -0.01em;
    font-size: 17px;
  }
  .sticky-btn {
    background: var(--rust); color: var(--cream);
    padding: 12px 18px;
    font-weight: 600;
    letter-spacing: -0.01em;
    transition: background .2s, transform .2s;
    white-space: nowrap;
  }
  .sticky-btn:hover { background: var(--rust-soft); transform: translateY(-1px); }

  /* =========================================================
     Responsive
     ========================================================= */
  @media (max-width: 980px) {
    .hero-grid,
    .premise-grid,
    .anatomy-grid,
    .excerpt-intro,
    .join-grid {
      grid-template-columns: 1fr;
    }
    .hero-meta { flex-direction: column; gap: 8px; }
    .hero-strip-row { font-size: 28px; padding: 16px 22px; }
    .pair {
      grid-template-columns: 40px 1fr;
      grid-template-rows: auto auto auto;
      gap: 6px 12px;
      padding: 18px 0;
    }
    .pair-n { grid-row: 1 / -1; }
    .pair-why { grid-column: 2; }
    .parts-row {
      grid-template-columns: 80px 1fr;
      grid-template-rows: auto auto;
      gap: 4px 16px;
    }
    .parts-d { grid-column: 2; opacity: 0.55; }
    .studio-row {
      grid-template-columns: 1fr;
      gap: 6px;
    }
    .status { text-align: left; }
    .footer-top { flex-direction: column; align-items: flex-start; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    .anatomy-step-head {
      grid-template-columns: 40px 1fr 20px;
      gap: 12px;
      padding: 14px 8px;
    }
    .anatomy-panel-inner {
      padding: 8px 12px 22px 60px;
      margin: 0 8px;
    }
    .anatomy-examples,
    .anatomy-rules {
      grid-template-columns: 1fr;
    }
    .digest-grid {
      grid-template-columns: 1fr;
    }
    .digest-blocks-list {
      grid-template-columns: 1fr;
    }
    .digest-vs {
      grid-template-columns: 1fr;
      text-align: left;
    }
    .digest-vs-sep { transform: rotate(90deg); justify-self: start; }
    .topnav { gap: 14px; }
    .topnav a { font-size: 10px; letter-spacing: 0.12em; }
    .topnav-cta { padding: 8px 12px; }
  }
  @media (max-width: 460px) {
    .topbar-inner { gap: 12px; }
    .brand-words { display: none; }
    .topnav { gap: 10px; }
    .topnav a:not(.topnav-cta) { font-size: 10px; }
  }