/* Landing-page extras - layered on top of the shared sand+serif shell */
    .hero        {
      text-align: center;
      padding: 3rem 1rem 2rem;
      min-height: min(72vh, 760px);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      background: transparent;
    }
    .hero-inner  {
      max-width: 1000px;
      width: 100%;
      margin: 0 auto;
      padding: 0 clamp(0.5rem, 3vw, 2rem);
    }
    .hero .rule  { margin-top: 1.5rem; }
    .hero-logo   { display: inline-block; margin: 0 auto 1.1rem; opacity: 0.95; transition: opacity .15s; }
    .hero-logo:hover { opacity: 1; }
    .hero-logo svg { display: block; }
    .hero-by     { display: inline-block; margin-top: 0.8rem; font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--bronze); opacity: 0.75; text-decoration: none; }
    .hero-by:hover { opacity: 1; }

    /* Divider · overline · divider meta band - mirrors main site's
       "ESTABLISHED IN 2022" pattern under the hero subtitle. */
    .hero-meta {
      display: flex; align-items: center; gap: 1rem;
      margin: 0.25rem auto 1.5rem;
      max-width: 760px;
      opacity: 0.95;
    }
    .hero-meta .div {
      flex: 0 0 32px;
      width: 32px; height: 1px;
      background: var(--bronze); opacity: 0.55;
    }
    .hero-meta .label {
      flex: 1 1 auto;
      font-size: 0.92rem; line-height: 1.6; letter-spacing: 0;
      color: var(--bronze); font-weight: 400;
      text-align: center;
    }
    @media (max-width: 540px) {
      .hero-meta .div { flex: 0 0 16px; width: 16px; }
      .hero-meta { gap: 0.6rem; }
      .hero-meta .label { font-size: 0.85rem; }
    }

    /* Catalog/listing badges row, hero top */
    .hero-badges {
      display: flex; flex-wrap: wrap; justify-content: center;
      gap: 0.5rem; margin: 0.5rem auto 1rem; max-width: 720px;
    }
    .hero-badges a { display: inline-flex; line-height: 0; }
    .hero-badges img { height: 20px; opacity: 0.92; transition: opacity .15s; }
    .hero-badges a:hover img { opacity: 1; }

    /* Hero search box - input gets most of the room; registry-name select
       can be long (e.g. "Registro Imprese · InfoCamere (BRIS)") so we cap
       it and let the input grow. */
    .hero-search {
      display: flex; flex-wrap: nowrap; gap: 0.5rem;
      align-items: stretch;
      max-width: 960px; margin: 1.75rem auto 0.75rem;
    }
    .hero-search select,
    .hero-search input[type="search"] {
      font-family: var(--fs-serif);
      color: var(--ink);
      background: #fff;
      border: 1px solid rgba(45,41,38,0.15);
      border-radius: 6px;
      outline: none;
      transition: border-color .15s, box-shadow .15s;
      box-shadow: 0 1px 2px rgba(45,41,38,0.04);
    }
    .hero-search select:hover,
    .hero-search input[type="search"]:hover {
      border-color: rgba(45,41,38,0.3);
    }
    .hero-search select:focus,
    .hero-search input[type="search"]:focus {
      border-color: var(--bronze);
      box-shadow: 0 0 0 3px rgba(142,115,91,0.12);
    }
    .hero-search select {
      flex: 0 0 260px; min-width: 180px;
      padding: 0.85rem 2rem 0.85rem 1rem;
      font-size: 0.95rem;
      cursor: pointer;
      text-overflow: ellipsis;
      appearance: none;
      -webkit-appearance: none;
      background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238E735B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 0.85rem center;
      background-size: 12px;
    }
    .hero-search input[type="search"] {
      flex: 1 1 0; min-width: 0;
      padding: 0.85rem 1.15rem;
      font-size: 1.05rem;
    }
    .hero-search input[type="search"]::placeholder {
      color: var(--ink); opacity: 0.4;
      font-style: italic;
    }
    .hero-search input[type="search"]::-webkit-search-cancel-button {
      -webkit-appearance: none; appearance: none;
    }
    .hero-search button {
      flex: 0 0 auto;
      padding: 0 1.75rem;
      font-size: 0.8rem; font-family: var(--fs-serif);
      letter-spacing: 0.22em; text-transform: uppercase;
      border: 1px solid var(--ink); border-radius: 6px;
      background: var(--ink); color: var(--sand); cursor: pointer;
      font-weight: 600;
      transition: background .15s, border-color .15s;
      box-shadow: 0 1px 2px rgba(45,41,38,0.08);
      white-space: nowrap;
    }
    .hero-search button:hover {
      background: var(--bronze); border-color: var(--bronze);
    }
    @media (max-width: 560px) {
      .hero-search { flex-wrap: wrap; }
      .hero-search select { flex: 1 1 100%; }
      .hero-search input[type="search"] { flex: 1 1 100%; }
      .hero-search button { flex: 1 1 100%; padding: 0.9rem 0; }
    }
    .hero-search-note {
      text-align: center; margin: 0 0 1.25rem;
      font-size: 0.7rem; color: var(--bronze);
      letter-spacing: 0.2em; text-transform: uppercase;
      opacity: 0.6;
    }

    /* Language switcher: discreet, two-letter codes, no flags
       (flags imply nation, not language). */
    .lang-switcher {
      text-align: center; margin: 0.75rem 0 0;
      font-size: 0.72rem; letter-spacing: 0.15em;
      color: var(--ink); opacity: 0.55;
    }
    .lang-switcher a, .lang-switcher .active {
      display: inline-block; padding: 0.15rem 0.4rem;
      text-decoration: none; color: inherit;
    }
    .lang-switcher a:hover { color: var(--bronze); opacity: 1; }
    .lang-switcher .active {
      color: var(--bronze); font-weight: 600;
    }

    /* Trust-signal: official registries we source data from.
       Sits where the lang switcher used to be (bottom of hero). */
    .hero-licensed {
      text-align: center;
      margin: 1.25rem auto 0;
      max-width: 880px;
      font-size: 1.05rem;
      letter-spacing: 0.005em;
      line-height: 1.7;
      color: var(--ink);
      font-weight: 500;
      opacity: 0.92;
    }
    /* Flag images via flagcdn.com (Windows-safe; emoji flags don't render
       in Segoe UI Emoji). 4:3 aspect ratio. */
    .hero-licensed .li-flag {
      display: inline-block;
      width: 1.2em; height: 0.9em;
      vertical-align: -0.18em;
      margin-right: 0.18em;
      border-radius: 2px;
      box-shadow: 0 0 0 0.5px rgba(0,0,0,0.18);
      object-fit: cover;
    }

    /* Featured-in / Acknowledgments lists */
    .featured-list {
      list-style: none; padding: 0; margin: 0;
      max-width: 720px;
    }
    .featured-list li {
      padding: 0.7rem 0 0.7rem 0;
      border-bottom: 1px solid var(--line);
      font-size: 0.95rem; line-height: 1.6;
    }
    .featured-list li:last-child { border-bottom: 0; }
    .featured-list a { color: var(--bronze); text-decoration: none; }
    .featured-list a:hover { text-decoration: underline; }
    .stack       { display: flex; flex-direction: column; gap: 1.25rem; }
    /* Section spacing & headings — aligned with app/platform/openregistry
       (py: 14 vertical, centered overline + serif h2 + 40px bronze rule). */
    .section     {
      margin: 0;
      padding: 7rem 0;
      border-top: 1px solid rgba(45,41,38,0.06);
      /* Skip rendering off-screen sections until they near the viewport.
         contain-intrinsic-size reserves space so the scrollbar doesn't
         jump when content materialises. Safari 18+, Chrome 85+, Firefox 124+. */
      content-visibility: auto;
      contain-intrinsic-size: 800px;
    }
    .section:first-of-type { border-top: 0; }
    .section h2  {
      text-align: center;
      margin: 0 auto;
      font-weight: 300;
      font-size: clamp(1.8rem, 4vw, 2.6rem);
      letter-spacing: -0.01em;
      font-family: var(--fs-serif);
      color: var(--ink);
    }
    .section h2::after {
      content: "";
      display: block;
      width: 40px; height: 1px;
      background: var(--bronze); opacity: 0.5;
      margin: 1.75rem auto 2rem;
    }
    .section .overline {
      text-align: center;
      font-size: 0.72rem;
      letter-spacing: 0.4em;
      text-transform: uppercase;
      color: var(--bronze);
      font-weight: 600;
      display: block;
      margin: 0 0 1rem;
    }
    .section .lead-left {
      text-align: left;
      margin: 0 auto 2.25rem;
      color: var(--ink);
      opacity: 0.78;
      font-size: 1rem;
      max-width: 720px;
      line-height: 1.8;
      font-weight: 300;
    }

    /* Quickstart block */
    #quickstart .box {
      background: var(--paper); border: 1px solid var(--line); border-radius: 2px;
      padding: 0; overflow: hidden;
    }
    #quickstart .box-header {
      background: var(--sand); padding: 0.75rem 1.25rem;
      border-bottom: 1px solid var(--line);
      display: flex; justify-content: space-between; align-items: center;
      font-size: 0.72rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--bronze); font-weight: 600;
    }
    #quickstart .box-header .endpoint {
      font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
      font-size: 0.75rem; color: var(--ink); opacity: 0.7; letter-spacing: 0; text-transform: none; font-weight: 400;
    }
    #quickstart pre {
      margin: 0; padding: 1.4rem 1.6rem;
      font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
      font-size: 0.85rem; line-height: 1.7; color: var(--ink);
      background: var(--paper); overflow-x: auto;
      white-space: pre;
    }
    #quickstart .qs-caption { margin-top: 1rem; color: var(--ink); opacity: 0.55; font-size: 0.82rem; }

    /* Quickstart tabs (CSS-only, radio-driven) */
    .qs-tabs {
      border: 1px solid var(--line);
      border-radius: 4px;
      background: var(--paper);
      overflow: hidden;
    }
    /* Hide radios off-screen but keep them focusable for a11y / keyboard nav */
    .qs-tabs > input[type="radio"] {
      position: absolute;
      width: 1px; height: 1px;
      padding: 0; margin: -1px;
      overflow: hidden; clip: rect(0,0,0,0);
      white-space: nowrap; border: 0;
    }
    .qs-tabstrip {
      display: flex; flex-wrap: wrap; justify-content: center;
      background: transparent;
      border-bottom: 1px solid rgba(45,41,38,0.1);
    }
    .qs-tabstrip label {
      display: inline-flex; align-items: center; gap: 0.55rem;
      padding: 0.9rem 1.5rem;
      font-size: 0.88rem;
      letter-spacing: 0.01em;
      font-weight: 600;
      color: var(--ink); opacity: 0.55;
      cursor: pointer;
      border-bottom: 2px solid transparent;
      transition: opacity .15s, border-color .15s, background .15s;
      user-select: none;
    }
    .qs-tabstrip label .tab-logo {
      width: 16px; height: 16px;
      flex: 0 0 16px;
      display: block;
    }
    .qs-tabstrip label:hover { opacity: 0.85; }
    /* Active-tab styling — ink color + bronze underline, matching the
       source page's tab pattern. No background fill. */
    #qs-claude-desktop:checked ~ .qs-tabstrip label[for="qs-claude-desktop"],
    #qs-claude-code:checked    ~ .qs-tabstrip label[for="qs-claude-code"],
    #qs-gemini:checked         ~ .qs-tabstrip label[for="qs-gemini"],
    #qs-chatgpt:checked        ~ .qs-tabstrip label[for="qs-chatgpt"],
    #qs-perplexity:checked     ~ .qs-tabstrip label[for="qs-perplexity"],
    #qs-cursor:checked         ~ .qs-tabstrip label[for="qs-cursor"],
    #qs-windsurf:checked       ~ .qs-tabstrip label[for="qs-windsurf"],
    #qs-vscode:checked         ~ .qs-tabstrip label[for="qs-vscode"],
    #qs-vercel:checked         ~ .qs-tabstrip label[for="qs-vercel"],
    #qs-m365:checked           ~ .qs-tabstrip label[for="qs-m365"],
    #qs-cline:checked          ~ .qs-tabstrip label[for="qs-cline"],
    #qs-other:checked          ~ .qs-tabstrip label[for="qs-other"] {
      opacity: 1;
      color: var(--ink);
      border-bottom-color: var(--bronze);
    }
    /* Keyboard focus ring */
    .qs-tabs > input[type="radio"]:focus-visible + .qs-tabstrip label {
      outline: 2px solid var(--bronze); outline-offset: -2px;
    }
    /* Panels: hide all, show the one whose radio is :checked */
    .qs-panel { display: none; }
    #qs-claude-desktop:checked ~ .qs-panels [data-tab="claude-desktop"],
    #qs-claude-code:checked    ~ .qs-panels [data-tab="claude-code"],
    #qs-gemini:checked         ~ .qs-panels [data-tab="gemini"],
    #qs-chatgpt:checked        ~ .qs-panels [data-tab="chatgpt"],
    #qs-perplexity:checked     ~ .qs-panels [data-tab="perplexity"],
    #qs-cursor:checked         ~ .qs-panels [data-tab="cursor"],
    #qs-windsurf:checked       ~ .qs-panels [data-tab="windsurf"],
    #qs-vscode:checked         ~ .qs-panels [data-tab="vscode"],
    #qs-vercel:checked         ~ .qs-panels [data-tab="vercel"],
    #qs-m365:checked           ~ .qs-panels [data-tab="m365"],
    #qs-cline:checked          ~ .qs-panels [data-tab="cline"],
    #qs-other:checked          ~ .qs-panels [data-tab="other"] {
      display: block;
    }
    .qs-panel { padding: 1.5rem 1.6rem 1.75rem; }
    .qs-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.75rem;
    }
    @media (min-width: 820px) {
      .qs-grid { grid-template-columns: 1.05fr 1fr; gap: 2.5rem; }
    }
    .qs-meta {
      margin: 0 0 0.4rem;
      font-size: 0.85rem; color: var(--ink); opacity: 0.85;
    }
    .qs-meta-label {
      display: inline-block; min-width: 4.5rem;
      font-size: 0.68rem; letter-spacing: 0.22em; text-transform: uppercase;
      font-weight: 600; color: var(--bronze); opacity: 0.85;
      margin-right: 0.6rem;
    }
    .qs-meta-note {
      margin: 0.85rem 0 0;
      font-size: 0.8rem; line-height: 1.65;
      color: var(--ink); opacity: 0.65;
    }
    .qs-meta-note code, .qs-meta code, .qs-steps code {
      background: var(--sand); padding: 0.1rem 0.35rem;
      border-radius: 2px; font-size: 0.85em;
    }
    .qs-cta { margin: 0.6rem 0 1.1rem; }
    .qs-cta a { display: inline-flex; line-height: 0; }
    .qs-cta img { height: 36px; opacity: 0.95; transition: opacity .15s; }
    .qs-cta a:hover img { opacity: 1; }
    .qs-cta-group {
      display: flex; flex-wrap: wrap; gap: 0.5rem;
      margin: 0.6rem 0 1.1rem;
    }
    .qs-cta-group a { display: inline-flex; line-height: 0; }
    .qs-cta-group img { height: 28px; opacity: 0.95; transition: opacity .15s; }
    .qs-cta-group a:hover img { opacity: 1; }
    .qs-steps {
      list-style: none; padding: 0; margin: 0.4rem 0 0;
      counter-reset: none;
    }
    .qs-steps li {
      display: flex; align-items: flex-start; gap: 0.85rem;
      padding: 0.55rem 0;
      border-bottom: 1px dashed var(--line);
      font-size: 0.92rem; line-height: 1.6;
      color: var(--ink); opacity: 0.9;
    }
    .qs-steps li:last-child { border-bottom: none; }
    .qs-num {
      flex: 0 0 auto;
      font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
      font-size: 0.78rem; font-weight: 600;
      color: var(--bronze); opacity: 0.8;
      margin-top: 0.15rem;
    }
    .qs-config-label {
      display: flex; align-items: baseline; justify-content: space-between;
      gap: 1rem; flex-wrap: wrap;
      margin: 0 0 0.4rem;
      font-size: 0.7rem; letter-spacing: 0.22em; text-transform: uppercase;
      font-weight: 600; color: var(--bronze);
    }
    .qs-config-path {
      font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
      font-size: 0.7rem; letter-spacing: 0; text-transform: none;
      font-weight: 400; color: var(--ink); opacity: 0.55;
    }
    .qs-code {
      border: 1px solid var(--line); border-radius: 3px;
      background: var(--sand); overflow: hidden;
    }
    .qs-code pre {
      margin: 0; padding: 0.95rem 1.1rem;
      font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
      font-size: 0.78rem; line-height: 1.65; color: var(--ink);
      background: var(--sand); overflow-x: auto;
      white-space: pre;
    }

    /* Feature bullets */
    .features { display: grid; grid-template-columns: 1fr; gap: 1rem; }
    @media (min-width: 760px) { .features { grid-template-columns: 1fr 1fr; gap: 1.5rem 3rem; } }
    .features li {
      list-style: none; padding-left: 1.4rem; position: relative;
      color: var(--ink); opacity: 0.85; font-size: 0.92rem; line-height: 1.7;
    }
    .features li::before {
      content: ""; position: absolute; left: 0; top: 0.7em;
      width: 6px; height: 1px; background: var(--bronze);
    }

    /* Jurisdiction grid (semantic <ul>; visual unchanged via grid override) */
    .juris-grid {
      display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0;
      border: 1px solid var(--line); border-radius: 2px; overflow: hidden;
      background: var(--paper);
      list-style: none; padding: 0; margin: 0;
    }
    @media (min-width: 640px) { .juris-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
    @media (min-width: 900px) { .juris-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
    .juris-chip {
      display: flex; align-items: flex-start; gap: 0.7rem;
      padding: 0.85rem 1rem;
      border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
      min-height: 3.4rem;
    }
    .juris-chip:last-child { border-right: 1px solid var(--line); }
    .juris-flag { font-size: 1.05rem; line-height: 1.4; flex-shrink: 0; }
    .juris-text { display: flex; flex-direction: column; gap: 0.15rem; flex: 1; min-width: 0; }
    .juris-name { font-size: 0.88rem; color: var(--ink); opacity: 0.9; line-height: 1.3; }
    .juris-registry {
      font-size: 0.7rem; color: var(--bronze); opacity: 0.85;
      letter-spacing: 0.01em;
      white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    }
    .juris-code {
      font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
      font-size: 0.7rem; color: var(--bronze); opacity: 0.6;
      flex-shrink: 0;
      padding-top: 0.15rem;
    }

    /* Data categories (semantic <dl>; visual unchanged via flex on .cat-row) */
    .cats { border-top: 1px solid var(--line); margin: 0; padding: 0; }
    .cat-row {
      display: flex; gap: 2rem;
      padding: 1.1rem 0;
      border-bottom: 1px solid var(--line);
    }
    .cat-label {
      flex: 0 0 180px;
      color: var(--bronze);
      font-size: 0.82rem;
      font-weight: 500;
      letter-spacing: 0.03em;
      padding-top: 0.15em;
      margin: 0;
    }
    .cat-desc {
      color: var(--ink); opacity: 0.8;
      font-size: 0.9rem; line-height: 1.75;
      flex: 1;
      margin: 0;
    }
    @media (max-width: 640px) {
      .cat-row { flex-direction: column; gap: 0.4rem; }
      .cat-label { flex: none; }
    }

    /* Example queries */
    .examples {
      display: grid; grid-template-columns: 1fr; gap: 0.75rem;
    }
    @media (min-width: 760px) { .examples { grid-template-columns: 1fr 1fr; } }
    .example {
      padding: 1rem 1.25rem;
      border: 1px solid var(--line);
      border-radius: 2px;
      background: var(--paper);
      color: var(--ink);
      font-size: 0.92rem;
      line-height: 1.7;
      font-style: italic;
      opacity: 0.85;
      transition: border-color 0.15s, opacity 0.15s;
    }
    .example:hover { border-color: var(--bronze); opacity: 1; }
    .example::before {
      content: "\201C";
      font-size: 1.3em;
      color: var(--bronze);
      margin-right: 0.2em;
      opacity: 0.5;
    }
    .example::after {
      content: "\201D";
      font-size: 1.3em;
      color: var(--bronze);
      margin-left: 0.1em;
      opacity: 0.5;
    }

    /* API endpoints (semantic <table>; visual unchanged via native table layout) */
    .endpoints { width: 100%; border-collapse: collapse; }
    /* Visually hide <thead> but keep it in the DOM for screen readers + HTML-to-markdown
       converters (WebFetch, readability) so they render a proper Markdown table. */
    .endpoints thead {
      position: absolute; width: 1px; height: 1px;
      clip: rect(0,0,0,0); clip-path: inset(50%);
      overflow: hidden; white-space: nowrap;
    }
    .endpoints tbody td {
      padding: 0.7rem 1rem 0.7rem 0;
      border-bottom: 1px solid var(--line);
      vertical-align: baseline;
    }
    .endpoints tbody tr:last-child td { border-bottom: none; }
    .endpoint-method {
      font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
      font-size: 0.72rem; color: var(--bronze); font-weight: 600;
      text-transform: uppercase;
      width: 3rem; white-space: nowrap;
    }
    .endpoint-path {
      font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
      font-size: 0.85rem; color: var(--ink);
      white-space: nowrap; min-width: 220px;
    }
    .endpoint-desc { color: var(--ink); opacity: 0.65; font-size: 0.88rem; }

    .links-strip { display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: center; margin-top: 1rem; }
    .links-strip a {
      font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase;
      color: var(--ink); opacity: 0.7; font-weight: 600;
    }
    .links-strip a:hover { color: var(--bronze); opacity: 1; }

    /* Top nav — visual parity with sophymarine.com HeadPage
       (uses system sans-serif stack; no web font fetch). */
    .topnav {
      display: flex; align-items: center;
      padding: 1rem 2rem;
      /* Break out of .page (1040px max-width, 4rem top / 1.5rem side padding)
         to span the full viewport, the way HeadPage does on the main site. */
      width: 100vw;
      margin-left: calc(50% - 50vw);
      margin-right: calc(50% - 50vw);
      margin-top: -4rem;
      margin-bottom: 1rem;
      position: relative; z-index: 1100;
      background: transparent;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
      box-sizing: border-box;
    }
    .topnav-brand {
      display: inline-flex; align-items: center;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
      font-weight: 700; font-size: 1.5rem;
      line-height: 1.334;
      letter-spacing: -0.2px;
      color: var(--ink);
      text-decoration: none; white-space: nowrap;
      cursor: pointer;
    }
    .topnav-brand svg {
      display: inline-block; vertical-align: middle;
      margin: 0 -1.4px; position: relative; top: 3px;
    }
    .topnav-menu { display: flex; align-items: center; gap: 0.5rem; margin-left: 40px; margin-top: 4px; }
    .topnav-menu a {
      position: relative;
      padding: 6px 8px;
      display: inline-flex; align-items: center; gap: 4px;
      color: var(--ink);
      font-weight: 600; font-size: 14px;
      letter-spacing: 0.3px;
      text-decoration: none;
    }
    .topnav-menu a .chev {
      width: 18px; height: 18px; opacity: 0.6;
      fill: currentColor;
      transition: transform .2s ease;
    }
    .topnav-item:hover > a .chev,
    .topnav-item:focus-within > a .chev { transform: rotate(180deg); }
    .topnav-menu a::after {
      content: ""; position: absolute;
      bottom: 4px; left: 8px; right: 8px;
      height: 1.5px; background: var(--bronze);
      transform: scaleX(0); transform-origin: left;
      transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .topnav-menu a:hover::after { transform: scaleX(1); }
    .topnav-auth {
      margin-left: auto;
      margin-top: 4px;
      display: flex; gap: 0.5rem; align-items: center;
    }
    .topnav-auth a {
      display: inline-flex; align-items: center; gap: 4px;
      padding: 6px 8px;
      color: var(--ink);
      font-weight: 600; font-size: 14px;
      letter-spacing: 0.3px;
      text-decoration: none;
      border-radius: 1px;
      transition: color 0.2s, background 0.2s;
    }
    .topnav-auth a.signin { margin-right: 8px; }
    .topnav-auth a:not(.btn-trial):hover { color: var(--bronze); }
    .topnav-auth a .ne-icon { width: 14px; height: 14px; fill: currentColor; }
    .topnav-auth .btn-trial {
      background: var(--ink); color: var(--paper);
      padding: 8px 24px;
      border-radius: 1px;
      box-shadow: none;
    }
    .topnav-auth .btn-trial:hover { background: var(--bronze); }
    /* Language picker: single button + dropdown menu with flags. */
    .lang-dropdown {
      position: relative;
      margin-right: 4px;
    }
    .lang-trigger {
      display: inline-flex; align-items: center; gap: 5px;
      background: transparent; border: none;
      padding: 6px 8px;
      color: var(--ink);
      font-weight: 600; font-size: 14px; letter-spacing: 0.3px;
      cursor: pointer; font-family: inherit;
      transition: color 0.2s;
    }
    .lang-trigger:hover, .lang-dropdown:hover .lang-trigger,
    .lang-dropdown:focus-within .lang-trigger { color: var(--bronze); }
    .lang-trigger .chev {
      width: 10px; height: 10px; transition: transform 0.2s;
      fill: currentColor;
    }
    .lang-dropdown:hover .lang-trigger .chev,
    .lang-dropdown:focus-within .lang-trigger .chev { transform: rotate(180deg); }
    .lang-trigger .li-flag,
    .lang-menu .li-flag {
      display: inline-block;
      width: 1.4em; height: 1.05em;
      vertical-align: -0.22em;
      border-radius: 2px;
      box-shadow: 0 0 0 0.5px rgba(0,0,0,0.18);
      object-fit: cover;
    }
    .lang-menu {
      position: absolute; top: 100%; right: 0;
      margin: 12px 0 0; padding: 4px 0;
      list-style: none;
      background: #FDFCF8;
      border: 1px solid #E5E2D9;
      border-radius: 1px;
      min-width: 200px;
      opacity: 0; visibility: hidden;
      transform: translateY(4px);
      transition: opacity .15s ease, transform .15s ease, visibility 0s linear .15s;
      z-index: 1200;
    }
    .lang-dropdown:hover .lang-menu,
    .lang-dropdown:focus-within .lang-menu {
      opacity: 1; visibility: visible; transform: translateY(0);
      transition: opacity .15s ease, transform .15s ease, visibility 0s;
    }
    /* Bridge over the 12px gap so hover doesn't break crossing it. */
    .lang-dropdown::after {
      content: ""; position: absolute;
      top: 100%; left: 0; right: 0; height: 16px;
    }
    .lang-menu li { margin: 0; }
    .lang-menu a {
      display: flex; align-items: center; gap: 8px;
      padding: 8px 14px;
      text-decoration: none;
      color: #2D2926;
      font-size: 14px; font-weight: 500; letter-spacing: 0.3px;
      border-left: 3px solid transparent;
      transition: border-color 0.15s, background 0.15s, color 0.15s;
    }
    .lang-menu a:hover {
      background: #F5F2E8;
      border-left-color: var(--bronze);
      color: var(--bronze);
    }
    .lang-menu li[aria-current="true"] a {
      color: var(--bronze); font-weight: 700;
    }
    .lang-menu .native {
      margin-left: 4px; opacity: 0.55;
      font-weight: 400; font-size: 13px;
    }

    /* Hover dropdowns - pixel-mirror of the main site's MUI Menus.
       Paper bg #FDFCF8, sand border #E5E2D9, 1px radius, no shadow,
       diamond arrow at top-left, 280x72 items with 3px bronze hover edge. */
    .topnav-item { position: relative; }
    .topnav-item > a { display: inline-flex; align-items: center; gap: 4px; }
    .topnav-dropdown {
      position: absolute;
      top: 100%;
      left: 0;
      margin-top: 12px;
      background: #FDFCF8;
      border: 1px solid #E5E2D9;
      border-radius: 1px;
      box-shadow: none;
      /* Matches MUI Menu paper p: 2 (16px) on Platform/About. */
      padding: 16px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(4px);
      transition: opacity .15s ease, transform .15s ease, visibility 0s linear .15s;
      z-index: 1200;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    }
    /* Diamond arrow indicator at top-left, exactly matching menuPaperProps.&:before */
    .topnav-dropdown::before {
      content: "";
      position: absolute;
      top: 0; left: 20px;
      width: 10px; height: 10px;
      background: #FDFCF8;
      transform: translateY(-50%) rotate(45deg);
      border-top: 1px solid #E5E2D9;
      border-left: 1px solid #E5E2D9;
      z-index: 0;
    }
    /* Bridge over the 12px gap so hover doesn't break when crossing it. */
    .topnav-item::after {
      content: "";
      position: absolute;
      top: 100%; left: 0; right: 0;
      height: 16px;
      pointer-events: auto;
    }
    .topnav-item:hover .topnav-dropdown,
    .topnav-item:focus-within .topnav-dropdown {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
      transition: opacity .15s ease, transform .15s ease, visibility 0s;
    }
    .topnav-item:hover > a::after,
    .topnav-item:focus-within > a::after { transform: scaleX(1); }
    /* MUI MenuItem: 280x72, padding 16/20, square corners, 3px transparent
       left border (becomes bronze on hover), 48px icon column. */
    .topnav-dropdown a {
      position: relative;
      display: flex; align-items: center;
      width: 280px; height: 72px;
      padding: 16px 20px;
      gap: 0;
      border-radius: 0;
      border-left: 3px solid transparent;
      color: #2D2926;
      text-decoration: none;
      transition: all 0.3s ease;
      box-sizing: border-box;
    }
    .topnav-dropdown a:hover {
      background: #F7F5F0;
      border-left-color: #8E735B;
      color: #2D2926;
    }
    .topnav-dropdown a::after { display: none; }
    .topnav-dropdown a .icon {
      min-width: 48px;
      display: inline-flex; align-items: center;
      color: #A39F99;
      transition: color 0.3s ease;
    }
    .topnav-dropdown a:hover .icon { color: #8E735B; }
    .topnav-dropdown a .icon svg { width: 28px; height: 28px; fill: currentColor; }
    .topnav-dropdown .title {
      font-weight: 700; font-size: 14px; line-height: 1.43;
      letter-spacing: 0.01071em; color: #2D2926;
    }
    .topnav-dropdown .sub   {
      font-weight: 400; font-size: 12px; line-height: 1.66;
      letter-spacing: 0.03333em;
      color: rgba(45,41,38,0.75);
      margin-top: 0;
    }
    /* Solutions: 3 columns of 280px MenuItems with category headers.
       Paper has zero top padding on the main site (pt: 0, pb: 2, px: 2)
       so the 72px column headers butt up against the top edge. */
    .topnav-dropdown.wide {
      display: grid;
      grid-template-columns: repeat(3, 280px);
      gap: 0 16px;
      padding: 0 16px 16px;
    }
    .topnav-dropdown.wide .col { display: flex; flex-direction: column; }
    .topnav-dropdown.wide .col-header {
      height: 72px;
      display: flex; flex-direction: column; justify-content: flex-end;
      padding: 0 16px;
      box-sizing: border-box;
    }
    .topnav-dropdown.wide .col-header .label {
      font-weight: 700; font-size: 14px; color: #2D2926;
      margin-bottom: 12px;
      padding-left: 0;
    }
    .topnav-dropdown.wide .col-header .div {
      width: 100%; height: 1px;
      background: #E5E2D9;
    }

    @media (max-width: 720px) {
      .topnav-menu { display: none; }
      .topnav-auth a:not(.btn-trial) { display: none; }
      .topnav-auth .lang-dropdown { display: none; }
      .topnav { padding: 0.75rem 1rem; }
    }

    /* Site footer — ports components/Footer.tsx into static HTML.
       Dark block; breaks out of .page so it spans the full viewport. */
    /* Resets the global footer{} rule used by docs/sign-in footers
       (opacity: 0.45; text-align: center; border-top; letter-spacing)
       which would otherwise bleed in - making the black bg render at 45%
       opacity, centering all text, and adding a dim top border. */
    .sm-footer {
      background: #000;
      color: #fff;
      padding: 3rem 0 2rem;
      width: 100vw;
      margin-left: calc(50% - 50vw);
      margin-right: calc(50% - 50vw);
      margin-top: 4rem;
      margin-bottom: -5rem;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
      box-sizing: border-box;
      opacity: 1;
      text-align: left;
      border-top: 0;
      letter-spacing: normal;
      font-size: 16px;
    }
    .sm-footer .footer-top {
      padding: 0 2rem;
      margin: 0 0 2rem;
      display: flex;
      flex-direction: row;
      gap: 0;
    }
    .sm-footer .footer-cols {
      flex: 0 0 50%;
      display: flex;
      flex-direction: row;
      flex-wrap: wrap;
    }
    .sm-footer .footer-col {
      flex: 1;
      min-width: 0;
    }
    .sm-footer .footer-col h4 {
      font-weight: 700; font-size: 16px;
      margin: 0 0 16px;
      color: #fff;
      letter-spacing: 0.05em;
      line-height: 1.8;
    }
    .sm-footer .footer-col a {
      color: #aaa; text-decoration: none;
      font-size: 14px; display: block;
      margin-bottom: 8px;
    }
    .sm-footer .footer-col a:hover { color: #fff; text-decoration: underline; }
    .sm-footer .footer-bottom {
      padding: 1.5rem 2rem 0;
      border-top: 1px solid #333;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      align-items: center;
      gap: 1.5rem;
    }
    .sm-footer .footer-bottom .copy {
      color: #888; font-size: 0.75rem;
      margin: 0;
    }
    .sm-footer .footer-bottom .links {
      display: flex; gap: 1.5rem; flex-wrap: wrap;
    }
    .sm-footer .footer-bottom .links a {
      color: #aaa; font-size: 0.75rem;
      text-decoration: none;
    }
    .sm-footer .footer-bottom .links a:hover { color: #fff; text-decoration: underline; }
    @media (max-width: 768px) {
      .sm-footer .footer-top { flex-direction: column; gap: 2rem; padding: 0 1rem; }
      .sm-footer .footer-bottom { padding: 1.5rem 1rem 0; }
      .sm-footer .footer-col { min-width: 50%; margin-bottom: 2rem; }
    }

    /* USE CASES — radio-button tab pattern matching the main site's
       UseCasesSection in app/platform/openregistry/page.tsx. */
    .uc { display: block; }
    .uc > input[type="radio"] {
      position: absolute; opacity: 0; pointer-events: none;
    }
    .uc-head { text-align: center; margin-bottom: 3rem; }
    .uc-head .overline {
      color: var(--bronze); letter-spacing: 0.4em;
      font-size: 0.72rem; display: block; margin: 0 0 1rem;
      text-transform: uppercase; font-weight: 600;
    }
    .uc-head h2 {
      font-family: var(--fs-serif); color: var(--ink); font-weight: 300;
      font-size: clamp(1.8rem, 4vw, 2.6rem); letter-spacing: -0.01em;
      margin: 0; text-align: center;
    }
    /* Explicit rule kept in markup for clarity; the global
       .section h2::after now draws it automatically. */
    .uc-head .rule { display: none; }
    .uc-tabstrip {
      display: flex; flex-wrap: wrap; justify-content: center;
      border-bottom: 1px solid rgba(45,41,38,0.1);
      margin-bottom: 3rem;
    }
    .uc-tabstrip label {
      padding: 0.9rem 1.5rem;
      font-size: 0.82rem; letter-spacing: 0.04em;
      color: var(--bronze); opacity: 0.55; font-weight: 400;
      cursor: pointer; user-select: none;
      border-bottom: 2px solid transparent;
      transition: color .15s, opacity .15s, border-color .15s;
    }
    .uc-tabstrip label:hover { opacity: 0.85; }
    #uc-0:checked ~ .uc-tabstrip label[for="uc-0"],
    #uc-1:checked ~ .uc-tabstrip label[for="uc-1"],
    #uc-2:checked ~ .uc-tabstrip label[for="uc-2"],
    #uc-3:checked ~ .uc-tabstrip label[for="uc-3"],
    #uc-4:checked ~ .uc-tabstrip label[for="uc-4"] {
      color: var(--ink); opacity: 1; font-weight: 600;
      border-bottom-color: var(--bronze);
    }
    .uc-panels { position: relative; }
    .uc-panel { display: none; }
    #uc-0:checked ~ .uc-panels [data-uc="0"],
    #uc-1:checked ~ .uc-panels [data-uc="1"],
    #uc-2:checked ~ .uc-panels [data-uc="2"],
    #uc-3:checked ~ .uc-panels [data-uc="3"],
    #uc-4:checked ~ .uc-panels [data-uc="4"] { display: flex; }
    .uc-panel {
      flex-direction: column;
      gap: 3rem;
      align-items: flex-start;
    }
    @media (min-width: 768px) {
      .uc-panel { flex-direction: row; gap: 4rem; }
    }
    .uc-left { flex: 0 0 300px; }
    .uc-right { flex: 1; min-width: 0; width: 100%; }
    .uc-overline {
      color: var(--bronze); font-size: 0.7rem;
      letter-spacing: 0.3em; text-transform: uppercase;
      margin: 0 0 0.85rem; font-weight: 600;
    }
    .uc-prompt {
      color: var(--ink); font-size: 1rem; line-height: 1.8;
      font-style: italic; font-weight: 300;
      margin: 0 0 2.25rem;
    }
    .uc-tools {
      display: inline-block;
      font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
      font-size: 0.8rem; color: var(--ink); opacity: 0.75;
      background: rgba(45,41,38,0.05);
      padding: 0.55rem 0.85rem; border-radius: 4px;
      line-height: 1.7;
    }
    .uc-code {
      background: #0A121E; border-radius: 12px;
      padding: 1.5rem; overflow: auto;
      margin: 0;
    }
    .uc-code pre {
      margin: 0;
      font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
      font-size: 0.78rem; line-height: 1.85;
      color: #A0C8A0; white-space: pre; overflow-x: auto;
    }

    /* Cookie Preferences button (replaces <a> in footer for dialog trigger).
       Resets global button{} rules (uppercase, letter-spacing, padding, radius)
       so it visually matches the sibling <a> links. */
    .sm-footer .footer-bottom .links .link-btn {
      background: none; border: none; padding: 0;
      cursor: pointer; font: inherit;
      color: #aaa; font-size: 0.75rem;
      text-decoration: none; font-family: inherit;
      letter-spacing: normal;
      text-transform: none;
      font-weight: 400;
      border-radius: 0;
      line-height: 1.66;
    }
    .sm-footer .footer-bottom .links .link-btn:hover {
      color: #fff; text-decoration: underline;
    }

    /* Cookie consent dialog — visual port of the MUI Dialog from Footer.tsx. */
    .cookie-dialog {
      border: none;
      border-radius: 12px;
      padding: 8px;
      max-width: 600px;
      width: calc(100% - 2rem);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
      color: rgba(0,0,0,0.87);
      box-shadow: 0 11px 15px -7px rgba(0,0,0,0.2), 0 24px 38px 3px rgba(0,0,0,0.14), 0 9px 46px 8px rgba(0,0,0,0.12);
    }
    .cookie-dialog::backdrop { background: rgba(0,0,0,0.5); }
    .cookie-header {
      display: flex; justify-content: space-between; align-items: center;
      padding: 1rem 1rem 0.75rem;
    }
    .cookie-header h3 {
      margin: 0; font-size: 1.25rem; font-weight: 700;
      letter-spacing: 0.0075em;
    }
    .cookie-x {
      background: none; border: none; cursor: pointer;
      font-size: 1.5rem; line-height: 1;
      width: 32px; height: 32px; border-radius: 50%;
      color: rgba(0,0,0,0.54);
      transition: background 0.15s;
    }
    .cookie-x:hover { background: rgba(0,0,0,0.04); }
    .cookie-body {
      padding: 1rem 1rem 0;
      border-top: 1px solid rgba(0,0,0,0.12);
      border-bottom: 1px solid rgba(0,0,0,0.12);
      max-height: 60vh; overflow-y: auto;
    }
    .cookie-intro {
      color: rgba(0,0,0,0.6); font-size: 0.875rem;
      line-height: 1.43; margin: 0 0 1rem;
    }
    .cookie-cat {
      display: flex; justify-content: space-between;
      align-items: flex-start; padding: 1rem 0;
    }
    .cookie-cat-text { flex: 1; padding-right: 1rem; }
    .cookie-cat h4 {
      margin: 0 0 4px; font-size: 0.875rem;
      font-weight: 700; line-height: 1.57;
    }
    .cookie-cat p {
      margin: 0; font-size: 0.75rem;
      line-height: 1.66; color: rgba(0,0,0,0.6);
    }
    .cookie-always {
      color: #2e7d32; font-weight: 700; font-size: 0.75rem;
      padding-top: 4px; white-space: nowrap;
    }
    .cookie-body hr {
      border: 0; border-top: 1px solid rgba(0,0,0,0.12);
      margin: 0;
    }
    /* iOS-style toggle switch */
    .cookie-switch {
      position: relative; display: inline-block;
      width: 34px; height: 14px; margin-top: 4px;
    }
    .cookie-switch input {
      opacity: 0; width: 0; height: 0;
      position: absolute;
    }
    .cookie-switch .slider {
      position: absolute; cursor: pointer;
      inset: 0;
      background: rgba(0,0,0,0.26);
      border-radius: 14px;
      transition: background 0.15s;
    }
    .cookie-switch .slider::before {
      content: ""; position: absolute;
      height: 20px; width: 20px;
      left: -3px; top: -3px;
      background: #fafafa;
      border-radius: 50%;
      box-shadow: 0 1px 3px rgba(0,0,0,0.2), 0 1px 2px rgba(0,0,0,0.14);
      transition: transform 0.15s, background 0.15s;
    }
    .cookie-switch input:checked + .slider { background: rgba(25,118,210,0.5); }
    .cookie-switch input:checked + .slider::before {
      transform: translateX(20px);
      background: #1976d2;
    }
    .cookie-footer {
      padding: 1rem;
      display: flex; gap: 0.5rem;
      align-items: center; flex-wrap: wrap;
    }
    .cookie-spacer { flex: 1; }
    .cookie-btn {
      font-family: inherit; font-size: 0.875rem;
      font-weight: 500; letter-spacing: 0.02857em;
      padding: 6px 16px; border-radius: 8px;
      cursor: pointer; line-height: 1.75;
      transition: background 0.15s, border-color 0.15s;
    }
    .cookie-btn-text {
      background: none; border: none;
      color: rgba(0,0,0,0.6);
    }
    .cookie-btn-text:hover { background: rgba(0,0,0,0.04); }
    .cookie-btn-outline {
      background: transparent; color: #1976d2;
      border: 1px solid rgba(25,118,210,0.5);
    }
    .cookie-btn-outline:hover {
      border-color: #1976d2; background: rgba(25,118,210,0.04);
    }
    .cookie-btn-filled {
      background: #000; color: #fff;
      border: 1px solid #000;
    }
    .cookie-btn-filled:hover { background: #333; border-color: #333; }
    @media (max-width: 520px) {
      .cookie-footer { flex-direction: column; align-items: stretch; }
      .cookie-spacer { display: none; }
      .cookie-btn { width: 100%; }
    }