/* D-040: the treatment shares the site's colour/type tokens and native disclosure. */
body.landing-site main.landing { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); grid-template-areas: "message preview" "details details"; gap: 24px 48px; align-content: center; padding: 18px 0; }
.landing-message { grid-area: message; min-width: 0; }
.landing-beta { margin: 0 0 14px; color: var(--blue-hi); font: 500 11px/1.5 var(--mono); text-transform: uppercase; letter-spacing: .1em; }
body.landing-site h1 { display: block; font-size: clamp(32px, 3.5vw, 50px); line-height: 1.08; letter-spacing: -.04em; max-width: 12.5em; margin: 0; }
.landing-lead { color: var(--soft); font-size: 17px; line-height: 1.55; margin: 18px 0 24px; max-width: 34em; }
.landing-preview { grid-area: preview; align-self: center; min-width: 0; margin: 0; }
.landing-preview img { width: 100%; height: auto; display: block; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.landing-preview a { display: block; border-radius: 12px; }
.landing-preview a:focus-visible { outline: 2px solid var(--blue-hi); outline-offset: 4px; }
.landing-preview figcaption { margin-top: 12px; font-size: 11px; line-height: 1.6; color: var(--dim); }
.landing-preview figcaption a { color: var(--soft); margin-top: 4px; }
.landing-benefits { margin: 24px 0 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.landing-benefits li { display: flex; gap: 12px; align-items: baseline; }
.benefit-number { font: 11px/1.5 var(--mono); color: var(--blue-hi); }
.landing-benefits strong { font-size: 13px; font-weight: 600; }
.landing-benefits p { margin: 2px 0 0; color: var(--soft); font-size: 12px; }
.landing-details { grid-area: details; border-top: 1px solid var(--line); padding-top: 12px; font-size: 12px; color: var(--soft); }
.landing-details summary { cursor: pointer; padding: 4px 0; }
.landing-details summary:hover { color: var(--text); }
.landing-details .works, .landing-details .tools { max-width: 640px; }
body.landing-site .wl { margin: 0; }
body.landing-site .bar { height: 44px; }
body.landing-site .bar input, body.landing-site .bar button, body.landing-site .bar .prompt { height: 44px; }
body.landing-site .bar button { padding: 0 14px; font-size: 12px; }
body.landing-site .bar input { font-size: 13px; }
body.landing-site .msg { font-size: 11px; }
body.landing-site .founding { font-size: 11px; margin-top: 8px; }
.access-optional { margin-top: 8px; padding: 0; background: transparent; border: 0; color: var(--blue-hi); font: inherit; font-size: 12px; text-decoration: underline; cursor: pointer; }
.access-optional:hover { color: var(--text); }
.experiment-choice { flex: 1 0 100%; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 8px; border-top: 1px solid var(--line); font-size: 11px; color: var(--soft); }
.experiment-choice > span { max-width: 650px; }
.experiment-choice > div { display: flex; gap: 8px; flex-shrink: 0; }
.experiment-choice button { border: 1px solid var(--line); border-radius: 5px; background: var(--panel); padding: 0 10px; height: 36px; color: var(--text); font: inherit; cursor: pointer; }
.experiment-choice button:hover { background: var(--blue); }
.experiment-choice button:disabled { opacity: .6; cursor: wait; }
.experiment-withdraw { border: 0; background: none; color: var(--dim); font: inherit; font-size: 10px; text-decoration: underline; cursor: pointer; }
.experiment-withdraw:hover { color: var(--text); }
.experiment-preview, .experiment-error { flex: 1 0 100%; font-size: 11px; color: var(--soft); }
body:has(.experiment-choice) footer { flex-wrap: wrap; }
@media (max-width: 900px) {
  body.landing-site main.landing { grid-template-columns: 1fr; grid-template-areas: "message" "preview" "details"; gap: 16px; padding: 22px 0; }
  body.landing-site h1 { font-size: clamp(29px, 5vw, 44px); max-width: 16em; }
  .landing-preview img { max-height: 220px; object-fit: contain; }
  .landing-benefits { gap: 8px; margin-top: 16px; }
  .landing-beta { margin-bottom: 10px; }
  .landing-lead { font-size: 14px; line-height: 1.4; margin: 12px 0 16px; }
  .landing-preview figcaption { font-size: 10px; margin-top: 6px; }
  .landing-preview figcaption a { display: inline; margin-left: 6px; }
  .experiment-choice { flex-wrap: wrap; gap: 6px; }
}
@media (max-width: 480px) {
  body.landing-site main.landing { gap: 12px; padding: 12px 0; }
  body.landing-site h1 { font-size: 29px; }
  body.landing-site .bar { flex-wrap: nowrap; }
  body.landing-site .bar button { flex: 0 0 auto; border-left: 1px solid var(--line); border-top: 0; border-radius: 0 3px 3px 0; padding: 0 8px; font-size: 10px; }
  body.landing-site .bar .prompt { padding: 0 8px; }
  body.landing-site .bar input { min-width: 0; padding: 0 6px; font-size: 12px; }
  .landing-benefits strong { font-size: 12px; }
  .landing-benefits p { font-size: 11px; margin: 0; }
  .landing-benefits { margin-top: 12px; gap: 5px; }
  .landing-preview img { max-height: 140px; }
  .landing-preview figcaption a { display: block; margin-left: 0; }
  .landing-details { padding-top: 8px; }
}
/* Optional experiment rows must wrap at wide widths too. */
body.site footer { flex-wrap: wrap; row-gap: 6px; }
@media (max-width: 480px) {
  body.landing-site footer { font-size: 11px; row-gap: 4px; }
  body.landing-site .legal-links { gap: 10px; }
  body.landing-site .landing-benefits li { line-height: 1.35; }
  body.landing-site .landing-benefits div { font-size: 11px; }
  body.landing-site .landing-benefits p { display: inline; }
  body.landing-site .landing-benefits strong { font-size: 11px; }
  body.landing-site .landing-benefits strong::after { content: ". "; }
}
/* Keep the optional choice actionable on the required phone viewport. */
@media (max-width: 480px) {
  body.site:has(.experiment-choice) .bar { flex-wrap: nowrap; height: 44px; }
  body.site:has(.experiment-choice) .bar input,
  body.site:has(.experiment-choice) .bar .prompt { height: 44px; min-width: 0; }
  body.site:has(.experiment-choice) .bar button { flex: 0 0 auto; height: 44px; border-left: 1px solid var(--line); border-top: 0; border-radius: 0 3px 3px 0; padding: 0 8px; font-size: 11px; }
  body.site:has(.experiment-choice) .body { margin-top: 6px; }
  body.site:has(.experiment-choice) .works,
  body.site:has(.experiment-choice) .tools { margin-top: 10px; }
  body.site:has(.experiment-withdraw),
  body.site:has(.experiment-choice) { padding-bottom: 6px; }
}