/* content.css — shared structural styles for Stage IX content/subpages. Extracted from about.html 2026-07-06. */
    :root {
      --black:   #0a0a0a;
      --grey-1:  #111111;
      --grey-2:  #1a1a1a;
      --grey-3:  #262626;
      --grey-4:  #333333;
      --grey-5:  #555555;
      --grey-6:  #888888;
      --grey-7:  #aaaaaa;
      --white:   #f0ede8;
      --brand:   #8b7f72;
      --brand-l: #a39589;
      --mono: 'IBM Plex Mono', monospace;
      --sans: 'IBM Plex Sans', sans-serif;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { font-size: 16px; scroll-behavior: smooth; }

    body {
      background: var(--black);
      color: var(--white);
      font-family: var(--sans);
      font-weight: 300;
      line-height: 1.65;
      min-height: 100vh;
      overflow-x: hidden;
    }

    .shell {
      max-width: 680px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ---- HEADER ---- */
    header {
      border-bottom: 1px solid var(--grey-3);
      padding: 24px 0;
    }

    header .shell {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .wordmark {
      text-decoration: none;
      font-family: var(--mono);
      font-size: 13px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--brand);
    }

    .stage-tag {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.08em;
      color: var(--grey-5);
      text-transform: uppercase;
    }

    /* ---- NAV ---- */
    .site-nav {
      border-bottom: 1px solid var(--grey-3);
      padding: 0;
    }

    .site-nav .shell {
      display: flex;
      align-items: center;
      gap: 0;
      flex-wrap: wrap;
      padding-top: 0;
      padding-bottom: 0;
    }

    .site-nav a {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--grey-6);
      text-decoration: none;
      padding: 14px 0;
      transition: color 0.15s;
    }

    .site-nav a:hover { color: var(--brand-l); }
    .site-nav a.active { color: var(--brand); }

    .site-nav a + a::before {
      content: '·';
      color: var(--grey-4);
      margin: 0 12px;
    }

    /* ---- MAIN ---- */
    main {
      padding: 64px 0 120px;
    }

    /* ---- TYPOGRAPHY ---- */
    h1 {
      font-family: var(--sans);
      font-weight: 300;
      font-size: clamp(28px, 5vw, 42px);
      line-height: 1.2;
      letter-spacing: -0.01em;
      margin-bottom: 24px;
      color: var(--white);
    }

    h2 {
      font-family: var(--sans);
      font-weight: 400;
      font-size: 20px;
      line-height: 1.3;
      margin-bottom: 16px;
      margin-top: 48px;
      color: var(--white);
    }

    .label {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--brand);
      margin-bottom: 16px;
      display: block;
    }

    p {
      color: var(--grey-7);
      margin-bottom: 16px;
      font-size: 15px;
    }

    p strong {
      color: var(--white);
      font-weight: 400;
    }

    .divider {
      border: none;
      border-top: 1px solid var(--grey-3);
      margin: 40px 0;
    }

    /* ---- STAT ROW ---- */
    .stat-row {
      display: flex;
      gap: 32px;
      flex-wrap: wrap;
      margin: 40px 0;
      padding: 28px 0;
      border-top: 1px solid var(--grey-3);
      border-bottom: 1px solid var(--grey-3);
    }

    .stat {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .stat-value {
      font-family: var(--mono);
      font-size: 24px;
      color: var(--white);
      letter-spacing: -0.02em;
    }

    .stat-label {
      font-family: var(--mono);
      font-size: 10px;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--grey-5);
    }

    /* ---- LINKS ---- */
    a.text-link {
      color: var(--brand-l);
      text-decoration: none;
      border-bottom: 1px solid var(--grey-4);
      transition: border-color 0.15s, color 0.15s;
    }

    a.text-link:hover {
      color: var(--white);
      border-color: var(--brand-l);
    }

    /* ---- LINK ROW ---- */
    .link-row {
      display: flex;
      gap: 24px;
      flex-wrap: wrap;
      margin-top: 40px;
      padding-top: 32px;
      border-top: 1px solid var(--grey-3);
    }

    .link-item {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .link-item .link-label {
      font-family: var(--mono);
      font-size: 10px;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--grey-5);
      margin-bottom: 0;
    }

    .link-item a {
      font-family: var(--mono);
      font-size: 12px;
      color: var(--brand-l);
      text-decoration: none;
      transition: color 0.15s;
    }

    .link-item a:hover { color: var(--white); }

    /* ---- FOOTER ---- */
    footer {
      border-top: 1px solid var(--grey-3);
      padding: 24px 0;
    }

    footer p {
      font-family: var(--mono);
      font-size: 11px;
      color: var(--grey-5);
      margin: 0;
    }

    /* ---- CONTEXT BOX ---- */
    .context-box {
      border-left: 2px solid var(--brand);
      background: var(--grey-2);
      padding: 24px 28px;
      margin: 40px 0 48px;
      border-radius: 2px;
    }
    .context-box h3 {
      font-family: var(--mono);
      font-size: 0.72rem;
      font-weight: 500;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--brand-l);
      margin-bottom: 14px;
    }
    .context-box p {
      font-size: 0.95rem;
      color: var(--grey-7);
      margin-bottom: 10px;
      line-height: 1.7;
    }
    .context-box p:last-child { margin-bottom: 0; }
    .context-box strong { color: var(--white); font-weight: 400; }

    /* ---- SAMPLE TRIO ---- */
    .sample-trio {
      display: flex;
      gap: 20px;
      margin: 20px 0 0;
      align-items: flex-start;
    }
    @media (max-width: 640px) {
      .sample-trio { flex-direction: column; }
      .sample-artifact { flex: none !important; width: 100%; }
      .excerpt-block { padding: 14px 16px; }
      .excerpt-text { word-break: break-word; }
    }
    .sample-artifact { flex: 1; min-width: 0; max-width: 100%; }
    .sample-artifact-label {
      font-family: var(--mono);
      font-size: 10px;
      color: var(--grey-5);
      margin-top: 6px;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    /* ---- EXCERPT BLOCK ---- */
    .excerpt-block {
      background: var(--grey-2);
      border-left: 2px solid var(--grey-4);
      padding: 16px 20px;
      border-radius: 2px;
      margin: 20px 0;
      overflow: hidden;
    }
    .excerpt-label {
      font-family: var(--mono);
      font-size: 10px;
      color: var(--grey-5);
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 8px;
    }
    .excerpt-text {
      font-size: 0.92rem;
      color: var(--grey-7);
      line-height: 1.7;
      font-style: italic;
    }
    .excerpt-source {
      margin-top: 10px;
      font-family: var(--mono);
      font-size: 11px;
    }
    .excerpt-source a { color: var(--brand-l); text-decoration: none; }
    .excerpt-source a:hover { color: var(--white); }

    /* Prevent pre/code from blowing out container on mobile */
    pre { max-width: 100%; }

/* ---- about.html: extracted inline styles (2026-07-06 pilot) ---- */
.diagram-panel-lg { margin: 32px 0; padding: 28px; background: var(--grey-1); border: 1px solid var(--grey-3); border-radius: 4px; }
.diagram-label-brand { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--brand); margin-bottom: 20px; }
.diagram-caption { font-size: 12px; color: var(--grey-5); margin: 12px 0 0; font-family: var(--mono); }
.diagram-panel-md { margin: 24px 0; padding: 20px 24px; background: var(--grey-1); border: 1px solid var(--grey-3); border-radius: 4px; }
.diagram-label-grey { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--grey-5); margin-bottom: 16px; }
.diagram-caption-tight { font-size: 12px; color: var(--grey-5); margin: 8px 0 0; font-family: var(--mono); }
.sample-img { width: 100%; border-radius: 4px; display: block; }
.flex-2 { flex: 2; }
.no-margin { margin: 0; }
.mt-12 { margin-top: 12px; }
.code-block { background: var(--grey-2); padding: 12px; border-radius: 4px; font-size: 11px; color: var(--grey-7); overflow-x: auto; margin-top: 6px; }
.mt-20 { margin-top: 20px; }