/* Light/dark tokens; text contrast >= 4.5:1 (WCAG 2.2 AA), targets >= 44 px (WCAG 2.5.8 needs 24 px). */
:root { --bg: #f6faf6; --surface: #ffffff; --text: #17201b; --muted: #404943; --primary: #006d3b;
  --on-primary: #ffffff; --ok: #00612f; --error: #ba1a1a; --outline: #707973; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1511; --surface: #1b211d; --text: #dfe4dd; --muted: #c0c9c0; --primary: #72dba0;
    --on-primary: #003919; --ok: #72dba0; --error: #ffb4ab; --outline: #8a938b; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.5 system-ui, sans-serif; }
/* Top app bar (Material 3 small: 64 dp): brand lockup, divider, page title. */
.topbar { display: flex; gap: 16px; align-items: center; min-height: 80px; padding: 0 16px; max-width: 720px;
  margin: 0 auto; }
/* Brand lockup carries the weight; the page title is secondary (owner 2026-10-13). */
.lockup { height: 40px; width: auto; display: block; }
.divider { width: 1px; align-self: stretch; margin: 22px 0; background: var(--outline); }
h1 { font-size: 1.125rem; font-weight: 400; margin: 0; color: var(--muted); }
@media (max-width: 420px) { .lockup { height: 32px; } .topbar { gap: 12px; } h1 { font-size: 1rem; } }
main { max-width: 720px; margin: 0 auto; padding: 0 16px 48px; }
.step, section { background: var(--surface); border: 1px solid var(--outline); border-radius: 16px;
  padding: 16px; margin: 16px 0; }
h2 { font-size: 1.125rem; margin: 0 0 8px; display: flex; justify-content: space-between; gap: 8px; }
.status { font-size: .875rem; font-weight: 400; color: var(--muted); }
.step[data-state="done"] .status { color: var(--ok); font-weight: 600; }
.step[data-state="fail"] .status { color: var(--error); font-weight: 600; }
button, select { min-height: 48px; font: inherit; border-radius: 24px; padding: 0 24px; }
button { background: var(--primary); color: var(--on-primary); border: 0; cursor: pointer; }
button:disabled { opacity: .45; cursor: not-allowed; }
button:focus-visible, select:focus-visible { outline: 3px solid var(--text); outline-offset: 2px; }
input { display: block; width: 100%; min-height: 48px; font: inherit; padding: 0 16px; margin: 4px 0;
  border: 1px solid var(--outline); border-radius: 12px; background: var(--surface); color: var(--text);
  letter-spacing: .05em; }
input:focus-visible { outline: 3px solid var(--text); outline-offset: 2px; }
.help { color: var(--muted); font-size: .875rem; margin: 0 0 12px; }
select { background: var(--surface); color: var(--text); border: 1px solid var(--outline); margin: 0 12px 12px 8px; }
pre { white-space: pre-wrap; overflow-wrap: anywhere; margin: 0; color: var(--muted); }
fieldset { border: 0; padding: 0; margin: 8px 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 4px 16px; }
fieldset label { display: flex; align-items: center; gap: 12px; min-height: 44px; cursor: pointer; }
fieldset input[type=checkbox] { width: 22px; height: 22px; margin: 0; accent-color: var(--primary); flex: none; }
fieldset .size { color: var(--muted); font-size: .875rem; margin-left: auto; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
button.text { background: transparent; color: var(--primary); padding: 0 12px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
#log { padding-left: 20px; margin: 0; }
#log .ok { color: var(--ok); } #log .error { color: var(--error); }
.notice { border: 2px solid var(--error); border-radius: 12px; padding: 12px; color: var(--error); }