:root {
    --paper: #f1f2ee;
    --paper-2: #e5e7e1;
    --paper-3: #d7dbd2;
    --ink: #1d2320;
    --ink-soft: #545f57;
    --navy: #3f5c0a;
    --slate: #6a6a6a;
    --brick: #8b3a2b;
    --rule: #cdd2c8;
    --tl-red: #ba262d;
    --tl-brown: #876237;
    --shadow: none;
  }

  :root:not([data-theme="light"]) {
    @media (prefers-color-scheme: dark) {
      --paper: #14170f;
      --paper-2: #1b1f16;
      --paper-3: #23281c;
      --ink: #e8ebe4;
      --ink-soft: #a8b0a1;
      --navy: #9ccf4a;
      --slate: #9a9a9a;
      --brick: #c96a55;
      --rule: #333a2b;
    }
  }

  :root[data-theme="dark"] {
    --paper: #14170f;
    --paper-2: #1b1f16;
    --paper-3: #23281c;
    --ink: #e8ebe4;
    --ink-soft: #a8b0a1;
    --navy: #9ccf4a;
    --slate: #9a9a9a;
    --brick: #c96a55;
    --rule: #333a2b;
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: "Public Sans", -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
  }

  ::selection { background: var(--navy); color: var(--paper); }

  a { color: inherit; }

  .wrap {
    max-width: 780px;
    margin: 0 auto;
    padding: 0 28px;
  }

  .data {
    font-family: "IBM Plex Mono", monospace;
    letter-spacing: 0.01em;
  }

  /* ---------- nav ---------- */
  header.site {
    border-bottom: 1px solid var(--rule);
    padding: 22px 0;
  }
  header.site .wrap {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
  }
  .brand { display: flex; align-items: center; gap: 9px; text-decoration: none; }
  .site-nav { display: flex; gap: 26px; font-size: 0.88rem; }
  .site-nav a { text-decoration: none; color: var(--ink-soft); }
  .site-nav a:hover, .site-nav a.active { color: var(--ink); }
  .brand-icon { width: 24px; height: auto; display: block; }
  .wordmark {
    font-family: "Fraunces", serif;
    font-weight: 600;
    font-size: 1.15rem;
    letter-spacing: 0.01em;
  }
  .wordmark span { color: var(--navy); }
  header.site .ver {
    font-size: 0.8rem;
    color: var(--ink-soft);
  }

  /* ---------- hero ---------- */
  .hero {
    padding: 72px 0 56px;
    position: relative;
    overflow: hidden;
  }
  .hero .wrap {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 40px;
    align-items: center;
  }
  h1 {
    font-family: "Fraunces", serif;
    font-weight: 500;
    font-size: clamp(2.1rem, 5vw, 3.1rem);
    line-height: 1.08;
    margin: 0 0 20px;
    max-width: 12ch;
  }
  .hero p.lede {
    font-size: 1.08rem;
    color: var(--ink-soft);
    max-width: 44ch;
    margin: 0 0 28px;
  }
  .hero-actions { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }
  .btn {
    display: inline-block;
    padding: 11px 20px;
    background: var(--ink);
    color: var(--paper);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 500;
    border-radius: 2px;
  }
  .btn.ghost {
    background: transparent;
    color: var(--ink);
    border: 1px solid var(--rule);
  }

  /* hero logo mark */
  .logo-card {
    background: var(--paper-2);
    border: 1px solid var(--rule);
    padding: 40px 30px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .logo-mark { width: 100%; max-width: 220px; height: auto; display: block; }

  /* ---------- section shell ---------- */
  section { padding: 56px 0; }
  section.divider { border-top: 1px solid var(--rule); }
  h2 {
    font-family: "Fraunces", serif;
    font-weight: 500;
    font-size: 1.55rem;
    margin: 0 0 26px;
  }
  section p { max-width: 64ch; color: var(--ink-soft); }

  /* what it does */
  .list-plain { margin-top: 8px; }
  .item {
    display: grid;
    grid-template-columns: 96px 1fr;
    gap: 20px;
    padding: 20px 0;
    border-top: 1px solid var(--rule);
  }
  .item:last-child { border-bottom: 1px solid var(--rule); }
  .item .tag {
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.72rem;
    color: var(--navy);
    padding-top: 3px;
  }
  .item h3 {
    font-family: "Public Sans", sans-serif;
    font-weight: 600;
    font-size: 1rem;
    margin: 0 0 6px;
  }
  .item p { margin: 0; font-size: 0.95rem; max-width: 54ch; }

  /* offline pitch */
  .pitch {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 46px;
    align-items: start;
  }
  blockquote {
    margin: 0;
    padding-left: 18px;
    border-left: 2px solid var(--navy);
    font-family: "Fraunces", serif;
    font-style: italic;
    font-size: 1.15rem;
    color: var(--ink);
    line-height: 1.5;
  }
  blockquote cite {
    display: block;
    margin-top: 10px;
    font-family: "Public Sans", sans-serif;
    font-style: normal;
    font-size: 0.78rem;
    color: var(--ink-soft);
  }

  /* two troops split */
  .troops {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--rule);
    border: 1px solid var(--rule);
    margin-top: 10px;
  }
  .troop-card {
    background: var(--paper);
    padding: 24px;
  }
  .swatches { display: flex; gap: 6px; margin-bottom: 14px; }
  .sw { width: 18px; height: 18px; border-radius: 50%; border: 1px solid rgba(0,0,0,0.15); }
  .troop-card h3 {
    font-family: "Fraunces", serif;
    font-weight: 500;
    font-size: 1.05rem;
    margin: 0 0 4px;
  }
  .troop-card .org { font-size: 0.82rem; color: var(--ink-soft); margin-bottom: 12px; }
  .troop-card ul { margin: 0; padding-left: 18px; font-size: 0.88rem; color: var(--ink-soft); }
  .troop-card li { margin-bottom: 6px; }
  /* try it demo */
  .demo-tabs {
    display: flex;
    gap: 2px;
    margin: 18px 0 0;
    border-bottom: 1px solid var(--rule);
  }
  .demo-tab {
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.82rem;
    padding: 10px 16px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--ink-soft);
    cursor: pointer;
  }
  .demo-tab.active {
    color: var(--ink);
    border-bottom-color: var(--navy);
  }
  .demo-panel {
    border: 1px solid var(--rule);
    border-top: none;
    padding: 22px;
    background: var(--paper-2);
  }
  .demo-note {
    font-size: 0.8rem;
    color: var(--ink-soft);
    margin: 0 0 16px;
  }
  .demo-twodeep {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--paper);
    border: 1px solid var(--rule);
    margin-bottom: 14px;
    font-size: 0.86rem;
  }
  .demo-twodeep input { width: 16px; height: 16px; }
  .demo-warn {
    display: none;
    font-size: 0.78rem;
    color: var(--brick);
    margin: -6px 0 14px;
  }
  .demo-warn.show { display: block; }
  .demo-roster {
    list-style: none;
    margin: 0 0 16px;
    padding: 0;
    border-top: 1px solid var(--rule);
  }
  .demo-roster li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 2px;
    border-bottom: 1px solid var(--rule);
    font-size: 0.92rem;
  }
  .demo-roster .demo-status {
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.72rem;
    color: var(--ink-soft);
    margin-right: 8px;
  }
  .demo-roster li.present .demo-status { color: var(--navy); }
  .demo-btn {
    font-family: "Public Sans", sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 6px 12px;
    border: 1px solid var(--rule);
    background: var(--paper);
    color: var(--ink);
    cursor: pointer;
    border-radius: 2px;
    min-width: 92px;
  }
  .demo-roster li.present .demo-btn {
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
  }
  .demo-summary {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.82rem;
    color: var(--ink-soft);
  }
  .demo-reset {
    background: none;
    border: none;
    color: var(--ink-soft);
    text-decoration: underline;
    text-decoration-color: var(--rule);
    font-size: 0.8rem;
    cursor: pointer;
    padding: 0;
    font-family: "Public Sans", sans-serif;
  }


  /* release */
  .release-head {
    display: flex;
    align-items: baseline;
    gap: 14px;
    margin-bottom: 6px;
  }
  .release-head .v {
    font-family: "IBM Plex Mono", monospace;
    font-size: 1.4rem;
    color: var(--navy);
  }
  .release-head .date { color: var(--ink-soft); font-size: 0.88rem; }
  .changelog {
    margin: 22px 0 30px;
    padding: 0;
    list-style: none;
  }
  .changelog li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 12px;
    font-size: 0.92rem;
    color: var(--ink-soft);
    max-width: 58ch;
  }
  .changelog li::before {
    content: "—";
    position: absolute;
    left: 0;
    color: var(--rule);
  }

  /* footer */
  footer {
    border-top: 1px solid var(--rule);
    padding: 34px 0 50px;
  }
  footer .wrap {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 16px;
  }
  footer .note {
    font-size: 0.85rem;
    color: var(--ink-soft);
    max-width: 44ch;
  }
  footer .contact { font-size: 0.88rem; }
  footer .contact a { text-decoration: underline; text-decoration-color: var(--rule); }
  footer .footer-nav { display: flex; gap: 20px; font-size: 0.88rem; }
  footer .footer-nav a { text-decoration: underline; text-decoration-color: var(--rule); }

  /* ---------- simple page header (contact / downloads) ---------- */
  .page-head { padding: 56px 0 10px; }
  .page-head h1 {
    font-size: clamp(1.9rem, 4.5vw, 2.5rem);
    max-width: none;
    margin-bottom: 14px;
  }
  .page-head p.lede { margin: 0; }

  /* ---------- contact page ---------- */
  .contact-card {
    border: 1px solid var(--rule);
    background: var(--paper-2);
    padding: 30px;
    margin-top: 18px;
  }
  .contact-card .big-link {
    font-family: "Fraunces", serif;
    font-size: 1.3rem;
    display: inline-block;
    margin-top: 6px;
  }
  .contact-card .big-link a { text-decoration-color: var(--rule); }
  .contact-meta {
    margin-top: 26px;
    font-size: 0.88rem;
    color: var(--ink-soft);
  }

  /* ---------- downloads page / access gate ---------- */
  .gate {
    border: 1px solid var(--rule);
    background: var(--paper-2);
    padding: 30px;
    max-width: 460px;
    margin-top: 10px;
  }
  .gate label {
    display: block;
    font-size: 0.85rem;
    color: var(--ink-soft);
    margin-bottom: 8px;
  }
  .gate input[type="text"] {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--rule);
    background: var(--paper);
    color: var(--ink);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.95rem;
    margin-bottom: 14px;
    border-radius: 2px;
  }
  .gate-row { display: flex; align-items: center; gap: 16px; }
  .gate-error {
    display: none;
    font-size: 0.82rem;
    color: var(--brick);
    margin-top: 12px;
  }
  .gate-error.show { display: block; }
  .unlocked { display: none; margin-top: 10px; }
  .unlocked.show { display: block; }
  .download-card {
    border: 1px solid var(--rule);
    background: var(--paper-2);
    padding: 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
  }
  .download-card h3 {
    font-family: "Fraunces", serif;
    font-weight: 500;
    font-size: 1.2rem;
    margin: 0 0 6px;
  }
  .download-card .meta {
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.78rem;
    color: var(--ink-soft);
  }
  .no-code {
    margin-top: 18px;
    font-size: 0.85rem;
    color: var(--ink-soft);
  }
  .no-code a { text-decoration-color: var(--rule); }

  @media (max-width: 720px) {
    .hero .wrap { grid-template-columns: 1fr; }
    .logo-card { order: -1; padding: 28px; }
    .pitch { grid-template-columns: 1fr; }
    .troops { grid-template-columns: 1fr; }
    .item { grid-template-columns: 1fr; gap: 6px; }
  }