:root {
    --ink: #0e0d0b;
    --parchment: #f2ede4;
    --cream: #faf7f2;
    --mid: #7a7268;
    --rule: #d4cdc0;

    /* Stack accent colors */
    --processes: #c8692a;   /* burnt sienna — Stack 1 */
    --resources: #3a6b8a;   /* slate blue — Stack 2 */
    --values: #4a7c59;      /* forest — Stack 3 */

    --processes-pale: #f5ede5;
    --resources-pale: #e5edf2;
    --values-pale: #e5ede8;

    --serif: 'Cormorant Garamond', Georgia, serif;
    --mono: 'DM Mono', monospace;
    --sans: 'Archivo', sans-serif;
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  html { scroll-behavior: smooth; }

  body {
    background: var(--cream);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

  /* ── HEADER ── */
  header {
    background: var(--ink);
    color: var(--parchment);
    padding: 0;
    position: relative;
    overflow: hidden;
  }

  .header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 48px 72px;
    position: relative;
    z-index: 2;
  }

  .header-eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--mid);
    margin-bottom: 32px;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.1s;
  }

  .header-acronym {
    display: flex;
    gap: 0;
    margin-bottom: 16px;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.25s;
  }

  .acronym-letter {
    font-family: var(--serif);
    font-size: clamp(64px, 8vw, 108px);
    font-weight: 300;
    line-height: 0.9;
    letter-spacing: -0.02em;
    color: var(--parchment);
  }

  .header-title {
    font-family: var(--serif);
    font-size: clamp(14px, 1.8vw, 18px);
    font-weight: 300;
    font-style: italic;
    color: var(--mid);
    margin-bottom: 48px;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.4s;
  }

  .header-description {
    font-family: var(--serif);
    font-size: clamp(18px, 2.2vw, 24px);
    font-weight: 300;
    line-height: 1.55;
    color: var(--parchment);
    max-width: 680px;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.55s;
  }

  .header-bg-text {
    position: absolute;
    right: -20px;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--serif);
    font-size: 280px;
    font-weight: 600;
    color: rgba(255,255,255,0.03);
    line-height: 1;
    user-select: none;
    pointer-events: none;
    z-index: 1;
  }

  /* ── STACK BAND ── */
  .stack-band {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    border-top: 1px solid #1e1c18;
  }

  .stack-cell {
    padding: 28px 48px;
    border-right: 1px solid #1e1c18;
    opacity: 0;
    animation: fadeUp 0.6s ease forwards;
  }

  .stack-cell:last-child { border-right: none; }
  .stack-cell:nth-child(1) { animation-delay: 0.7s; }
  .stack-cell:nth-child(2) { animation-delay: 0.8s; }
  .stack-cell:nth-child(3) { animation-delay: 0.9s; }

  .stack-cell-label {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    margin-bottom: 6px;
  }

  .stack-cell-label.p { color: var(--processes); }
  .stack-cell-label.r { color: var(--resources); }
  .stack-cell-label.v { color: var(--values); }

  .stack-cell-name {
    font-family: var(--sans);
    font-size: 13px;
    font-weight: 500;
    color: var(--parchment);
    opacity: 0.7;
  }

  /* ── NAV ── */
  nav {
    background: var(--parchment);
    border-bottom: 1px solid var(--rule);
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 48px;
    display: flex;
    gap: 0;
    align-items: stretch;
  }

  .nav-link {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--mid);
    text-decoration: none;
    padding: 18px 24px;
    border-right: 1px solid var(--rule);
    transition: color 0.2s, background 0.2s;
  }

  .nav-link:first-child { border-left: 1px solid var(--rule); }
  .nav-link:hover { color: var(--ink); background: var(--cream); }

  /* ── MAIN SECTIONS ── */
  section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 96px 48px;
    border-bottom: 1px solid var(--rule);
  }

  section:last-of-type { border-bottom: none; }

  .section-label {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--mid);
    margin-bottom: 48px;
    display: flex;
    align-items: center;
    gap: 16px;
  }

  .section-label::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--rule);
  }

  h2 {
    font-family: var(--serif);
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 300;
    line-height: 1.15;
    margin-bottom: 32px;
    letter-spacing: -0.01em;
  }

  h2 em {
    font-style: italic;
    color: var(--mid);
  }

  .lead {
    font-family: var(--serif);
    font-size: clamp(17px, 1.8vw, 21px);
    font-weight: 300;
    line-height: 1.65;
    color: #2a2820;
    max-width: 720px;
    margin-bottom: 40px;
  }

  p {
    font-size: 15px;
    line-height: 1.75;
    color: #3a3830;
    max-width: 680px;
    margin-bottom: 20px;
  }

  /* ── ORIGIN SECTION ── */
  .origin-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
    margin-top: 48px;
  }

  .origin-quote {
    font-family: var(--serif);
    font-size: clamp(22px, 2.5vw, 32px);
    font-weight: 300;
    font-style: italic;
    line-height: 1.45;
    color: var(--ink);
    border-left: 3px solid var(--processes);
    padding-left: 28px;
  }

  .origin-quote cite {
    display: block;
    font-family: var(--mono);
    font-size: 11px;
    font-style: normal;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--mid);
    margin-top: 20px;
  }

  /* ── ACRONYM BREAKDOWN ── */
  .acronym-breakdown {
    margin-top: 64px;
    border: 1px solid var(--rule);
  }

  .acronym-row {
    display: grid;
    grid-template-columns: 64px 1fr;
    border-bottom: 1px solid var(--rule);
    transition: background 0.2s;
  }

  .acronym-row:last-child { border-bottom: none; }
  .acronym-row:hover { background: var(--parchment); }

  .acronym-row-letter {
    font-family: var(--serif);
    font-size: 40px;
    font-weight: 300;
    color: var(--mid);
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--rule);
    padding: 24px 0;
  }

  .acronym-row-content {
    padding: 24px 32px;
  }

  .acronym-row-term {
    font-family: var(--sans);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 6px;
  }

  .acronym-row-desc {
    font-size: 14px;
    line-height: 1.6;
    color: #3a3830;
    margin: 0;
    max-width: 100%;
  }

  /* ── THREE STACKS ── */
  .stacks-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2px;
    margin-top: 48px;
    background: var(--rule);
  }

  .stack-card {
    background: var(--cream);
    padding: 48px 36px;
  }

  .stack-card-accent {
    width: 32px;
    height: 3px;
    margin-bottom: 28px;
  }

  .stack-card-accent.p { background: var(--processes); }
  .stack-card-accent.r { background: var(--resources); }
  .stack-card-accent.v { background: var(--values); }

  .stack-card-modules {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--mid);
    margin-bottom: 12px;
  }

  .stack-card-name {
    font-family: var(--serif);
    font-size: 28px;
    font-weight: 300;
    margin-bottom: 8px;
  }

  .stack-card-credential {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    margin-bottom: 24px;
    padding: 4px 10px;
    display: inline-block;
    border: 1px solid;
  }

  .stack-card-credential.p { color: var(--processes); border-color: var(--processes); }
  .stack-card-credential.r { color: var(--resources); border-color: var(--resources); }
  .stack-card-credential.v { color: var(--values); border-color: var(--values); }

  .stack-card-desc {
    font-size: 14px;
    line-height: 1.7;
    color: #3a3830;
    margin-bottom: 28px;
    max-width: 100%;
  }

  .stack-modules-list {
    list-style: none;
    border-top: 1px solid var(--rule);
    padding-top: 20px;
  }

  .stack-modules-list li {
    font-size: 13px;
    line-height: 1.5;
    color: var(--mid);
    padding: 8px 0;
    border-bottom: 1px solid var(--rule);
    display: grid;
    grid-template-columns: 36px 1fr;
    gap: 8px;
    max-width: 100%;
    margin: 0;
  }

  .stack-modules-list li:last-child { border-bottom: none; }

  .module-code {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    color: var(--mid);
    padding-top: 2px;
  }

  .module-name { color: var(--ink); font-size: 13px; }

  /* ── THEORETICAL SPINE ── */
  .spine-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 48px;
    font-size: 13px;
  }

  .spine-table th {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--mid);
    text-align: left;
    padding: 12px 16px;
    border-bottom: 2px solid var(--ink);
    white-space: nowrap;
  }

  .spine-table td {
    padding: 16px;
    border-bottom: 1px solid var(--rule);
    vertical-align: top;
    line-height: 1.5;
  }

  .spine-table tr:hover td { background: var(--parchment); }

  .spine-table .row-label {
    font-family: var(--sans);
    font-weight: 700;
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
  }

  .spine-table .row-label.study { color: var(--processes); }
  .spine-table .row-label.explore { color: var(--resources); }
  .spine-table .row-label.evaluate { color: var(--values); }
  .spine-table .row-label.design { color: var(--ink); }

  .spine-table .design-row td {
    background: var(--ink);
    color: var(--parchment);
    border-bottom: none;
  }

  .spine-table .design-row:hover td { background: #1e1c18; }
  .spine-table .design-row .row-label { color: var(--parchment); }

  /* ── PLAYLIST SECTION ── */
  .playlist-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    margin-top: 48px;
    align-items: start;
  }

  .dialectic {
    margin-top: 48px;
  }

  .dialectic-step {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 24px;
    margin-bottom: 24px;
    align-items: start;
  }

  .dialectic-marker {
    font-family: var(--serif);
    font-size: 13px;
    font-style: italic;
    color: var(--mid);
    padding-top: 2px;
    text-align: right;
  }

  .dialectic-content strong {
    font-family: var(--sans);
    font-size: 13px;
    font-weight: 700;
    display: block;
    margin-bottom: 4px;
  }

  .dialectic-content p {
    font-size: 14px;
    color: #3a3830;
    margin: 0;
    max-width: 100%;
  }

  /* ── CONTRIBUTIONS ── */
  .contributions-list {
    margin-top: 48px;
    counter-reset: contrib;
  }

  .contribution {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 24px;
    padding: 32px 0;
    border-bottom: 1px solid var(--rule);
    counter-increment: contrib;
  }

  .contribution:last-child { border-bottom: none; }

  .contribution-number {
    font-family: var(--serif);
    font-size: 36px;
    font-weight: 300;
    color: var(--rule);
    line-height: 1;
    padding-top: 4px;
  }

  .contribution-content h3 {
    font-family: var(--sans);
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 6px;
    letter-spacing: 0.02em;
  }

  .contribution-content .attribution {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--mid);
    margin-bottom: 12px;
  }

  .contribution-content p {
    font-size: 14px;
    color: #3a3830;
    margin: 0;
    max-width: 100%;
  }

  /* ── PATHWAY ── */
  .pathway {
    margin-top: 48px;
    display: grid;
    grid-template-columns: 1fr 24px 1fr 24px 1fr;
    gap: 0;
    align-items: center;
  }

  .pathway-node {
    background: var(--parchment);
    border: 1px solid var(--rule);
    padding: 28px;
  }

  .pathway-arrow {
    text-align: center;
    color: var(--mid);
    font-size: 18px;
  }

  .pathway-node-label {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--mid);
    margin-bottom: 8px;
  }

  .pathway-node-name {
    font-family: var(--sans);
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .pathway-node-desc {
    font-size: 13px;
    color: #3a3830;
    line-height: 1.55;
    margin: 0;
    max-width: 100%;
  }

  /* ── CERTIFIES ── */
  .certifies-list {
    margin-top: 48px;
    list-style: none;
  }

  .certifies-list li {
    display: grid;
    grid-template-columns: 24px 1fr;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--rule);
    font-size: 15px;
    line-height: 1.6;
    color: #2a2820;
    max-width: 720px;
    margin: 0;
  }

  .certifies-list li:last-child { border-bottom: none; }

  .certifies-list li::before {
    content: '→';
    font-family: var(--mono);
    font-size: 13px;
    color: var(--mid);
    padding-top: 2px;
  }

  /* ── FOOTER ── */
  footer {
    background: var(--ink);
    color: var(--mid);
    padding: 48px;
  }

  .footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 48px;
  }

  .footer-block-label {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #3a3830;
    margin-bottom: 12px;
  }

  .footer-block-content {
    font-size: 13px;
    line-height: 1.7;
    color: var(--mid);
  }

  .footer-bottom {
    max-width: 1200px;
    margin: 48px auto 0;
    padding-top: 24px;
    border-top: 1px solid #1e1c18;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #2a2820;
  }

  /* ── ANIMATIONS ── */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* ── RESPONSIVE ── */
  @media (max-width: 900px) {
    .header-inner { padding: 56px 24px 48px; }
    section { padding: 64px 24px; }
    nav { display: none; }
    .origin-grid, .playlist-grid { grid-template-columns: 1fr; gap: 40px; }
    .stacks-grid { grid-template-columns: 1fr; }
    .spine-table { font-size: 12px; }
    .spine-table th, .spine-table td { padding: 10px 10px; }
    .pathway { grid-template-columns: 1fr; }
    .pathway-arrow { display: none; }
    .footer-inner { grid-template-columns: 1fr; }
    .stack-band { grid-template-columns: 1fr; }
    .stack-cell { border-right: none; border-bottom: 1px solid #1e1c18; }
  }

/* ── Additional nav states ── */
.site-nav-link.active-wp { color: var(--parchment); background: rgba(255,255,255,0.06); }
.site-nav-link.active-out { color: var(--parchment); background: rgba(255,255,255,0.06); }

/* ── Simple page sections (Work Plan / Outputs) ── */
.page-section {
  padding: 80px 0;
  border-bottom: 2px solid var(--ink);
}
.page-section:last-of-type { border-bottom: none; }
.page-inner { max-width: 1200px; margin: 0 auto; padding: 0 48px; }
.page-grid { display: grid; grid-template-columns: 1fr 380px; gap: 64px; }
@media (max-width: 960px) {
  .page-inner { padding: 0 24px; }
  .page-grid { grid-template-columns: 1fr; gap: 40px; }
}
.small-note { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--mid); }
.link-list { list-style: none; padding: 0; margin: 0; }
.link-list li { padding: 10px 0; border-bottom: 1px solid var(--rule); }
.link-list li:last-child { border-bottom: none; }
.link-list a { color: var(--ink); text-decoration: none; border-bottom: 1px solid rgba(14,13,11,0.2); }
.link-list a:hover { border-bottom-color: var(--ink); }


.site-nav-link.active-o { color: var(--parchment); background: rgba(255,255,255,0.06); }
.site-nav-link.active-p { color: var(--processes); background: rgba(200,105,42,0.08); }