.extension-page {
  --extension-text: #252a30;
  --extension-muted: #56616d;
  --extension-line: rgba(69, 86, 105, .16);
  --extension-paper: rgba(255, 255, 255, .82);
  color: var(--extension-text);
  background: var(--pearl);
}

.extension-rail { width: min(1440px, 100%); margin-inline: auto; }
.extension-kicker { margin: 0 0 18px; color: var(--extension-muted); font-size: 13px; font-weight: 600; }
.extension-page :is(a, button):focus-visible { outline: 2px solid #1674c5; outline-offset: 5px; }

.extension-hero {
  padding: clamp(84px, 9vw, 132px) 32px clamp(72px, 8vw, 112px);
  background: radial-gradient(circle at 82% 18%, rgba(149, 194, 232, .18), transparent 28%), #f7f6f1;
  border-bottom: 1px solid var(--extension-line);
}
.extension-hero-grid { display: grid; grid-template-columns: minmax(0, .88fr) minmax(420px, 1.12fr); gap: clamp(52px, 8vw, 120px); align-items: center; }
.extension-hero-copy { max-width: 640px; padding-block: 22px; }
.extension-hero h1 { max-width: 12ch; margin: 0; color: var(--extension-text); font-size: clamp(46px, 5.4vw, 78px); font-weight: 600; line-height: .98; letter-spacing: -.058em; }
.extension-lead { max-width: 39ch; margin: 28px 0 0; color: var(--extension-muted); font-size: clamp(17px, 1.6vw, 20px); line-height: 1.58; }
.extension-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 22px; margin-top: 34px; }
.extension-actions .primary-pill { min-height: 48px; padding-inline: 22px; }
.extension-text-link { color: #075da6; font-size: 14px; font-weight: 600; text-decoration: none; }
.extension-text-link:hover { text-decoration: underline; }
.extension-compatibility { margin: 22px 0 0; color: var(--extension-muted); font-size: 12px; }

.extension-flow-card { overflow: hidden; border: 1px solid rgba(78, 102, 127, .18); border-radius: 24px; background: var(--extension-paper); box-shadow: 0 24px 70px rgba(52, 72, 92, .1), inset 0 1px #fff; }
.extension-flow-head { display: flex; justify-content: space-between; gap: 16px; padding: 18px 22px; border-bottom: 1px solid var(--extension-line); color: var(--extension-muted); font-size: 12px; font-weight: 600; }
.extension-status { display: inline-flex; align-items: center; gap: 7px; color: var(--extension-muted); }
.extension-flow-list { margin: 0; padding: 12px 28px; list-style: none; }
.extension-flow-list li { display: grid; grid-template-columns: 38px 1fr; gap: 16px; padding: 24px 0; border-bottom: 1px solid var(--extension-line); }
.extension-flow-list li:last-child { border-bottom: 0; }
.extension-flow-number { padding-top: 3px; color: #788592; font-size: 11px; font-variant-numeric: tabular-nums; }
.extension-flow-list strong, .extension-flow-list small { display: block; }
.extension-flow-list strong { color: var(--extension-text); font-size: 17px; font-weight: 600; letter-spacing: -.02em; }
.extension-flow-list small { max-width: 40ch; margin-top: 7px; color: var(--extension-muted); font-size: 13px; line-height: 1.55; }

.extension-summary { padding: 0 32px; background: #eef2f4; border-bottom: 1px solid var(--extension-line); }
.extension-summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.extension-summary p { display: grid; gap: 5px; margin: 0; padding: 27px 32px; border-right: 1px solid var(--extension-line); }
.extension-summary p:first-child { padding-left: 0; }
.extension-summary p:last-child { border-right: 0; }
.extension-summary strong { font-size: 14px; font-weight: 600; }
.extension-summary span { color: var(--extension-muted); font-size: 12px; line-height: 1.5; }

.extension-setup { padding: clamp(70px, 8vw, 112px) 32px; }
.extension-setup-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(440px, 1.2fr); gap: clamp(56px, 9vw, 132px); align-items: start; }
.extension-section-heading h2 { max-width: 13ch; margin: 0; color: var(--extension-text); font-size: clamp(34px, 4vw, 52px); font-weight: 600; line-height: 1.06; letter-spacing: -.048em; }
.extension-section-heading > p:not(.extension-kicker) { max-width: 42ch; margin: 22px 0 0; color: var(--extension-muted); font-size: 15px; line-height: 1.65; }
.extension-section-heading .secondary-pill { margin-top: 28px; }
.extension-steps { margin: 0; padding: 0 30px; list-style: none; border: 1px solid var(--extension-line); border-radius: 18px; background: var(--extension-paper); }
.extension-steps li { display: grid; grid-template-columns: 34px 1fr; gap: 18px; padding: 28px 0; border-bottom: 1px solid var(--extension-line); }
.extension-steps li:last-child { border-bottom: 0; }
.extension-steps li > span { padding-top: 2px; color: #75818e; font-size: 12px; font-variant-numeric: tabular-nums; }
.extension-steps strong { color: var(--extension-text); font-size: 19px; font-weight: 600; letter-spacing: -.025em; }
.extension-steps p { margin: 8px 0 0; color: var(--extension-muted); font-size: 14px; line-height: 1.6; }

.extension-details { padding: clamp(68px, 7vw, 96px) 32px; background: #f0eee8; border-block: 1px solid var(--extension-line); }
.extension-details-heading { display: flex; justify-content: space-between; align-items: end; gap: 28px; margin-bottom: 42px; }
.extension-details-heading .extension-kicker { order: 2; margin-bottom: 8px; }
.extension-details-heading h2 { max-width: 15ch; }
.extension-details-grid { display: grid; grid-template-columns: 1.05fr 1.2fr .95fr; border-top: 1px solid var(--extension-line); }
.extension-details article { min-height: 300px; padding: 34px 36px 16px 0; border-right: 1px solid var(--extension-line); }
.extension-details article + article { padding-left: 36px; }
.extension-details article:last-child { padding-right: 0; border-right: 0; }
.extension-details svg { width: 28px; height: 28px; fill: none; stroke: #477397; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.extension-details h3 { margin: 72px 0 12px; color: var(--extension-text); font-size: 20px; font-weight: 600; letter-spacing: -.025em; }
.extension-details p { max-width: 38ch; margin: 0; color: var(--extension-muted); font-size: 14px; line-height: 1.65; }
.extension-details a { display: inline-flex; margin-top: 18px; color: #075da6; font-size: 13px; font-weight: 600; }

.extension-final { padding: 68px 32px 88px; background: #f7f6f1; }
.extension-final-inner { display: flex; align-items: end; justify-content: space-between; gap: 36px; padding-top: 40px; border-top: 1px solid var(--extension-line); }
.extension-final h2 { max-width: 16ch; margin: 0; color: var(--extension-text); font-size: clamp(34px, 4vw, 54px); font-weight: 600; line-height: 1.05; letter-spacing: -.048em; }
.extension-final .primary-pill { flex: 0 0 auto; min-height: 48px; padding-inline: 22px; }

html[data-upload120-theme="dark"] .extension-page { --extension-text: #f1f3f7; --extension-muted: #b0b6c2; --extension-line: #2a2d35; --extension-paper: #1a1c22; }
html[data-upload120-theme="dark"] :is(.extension-hero, .extension-final) { background: #111216; }
html[data-upload120-theme="dark"] .extension-summary { background: #111216; }
html[data-upload120-theme="dark"] .extension-setup { background: #111216; }
html[data-upload120-theme="dark"] .extension-details { background: #111216; }
html[data-upload120-theme="dark"] .extension-flow-card { box-shadow: none; }
html[data-upload120-theme="dark"] .extension-status { color: var(--extension-muted); }
html[data-upload120-theme="dark"] :is(.extension-text-link, .extension-details a) { color: #82b7ff; }

@media (max-width: 900px) {
  .extension-hero, .extension-setup, .extension-details, .extension-final { padding-inline: 18px; }
  .extension-summary { padding-inline: 18px; }
  .extension-hero-grid, .extension-setup-grid { grid-template-columns: 1fr; gap: 48px; }
  .extension-hero-copy { padding-block: 0; }
  .extension-summary-grid { grid-template-columns: 1fr; }
  .extension-summary p, .extension-summary p:first-child { padding: 20px 0; border-right: 0; border-bottom: 1px solid var(--extension-line); }
  .extension-summary p:last-child { border-bottom: 0; }
  .extension-details-grid { grid-template-columns: 1fr; }
  .extension-details article, .extension-details article + article { min-height: 0; padding: 28px 0; border-right: 0; border-bottom: 1px solid var(--extension-line); }
  .extension-details article:last-child { border-bottom: 0; }
  .extension-details h3 { margin-top: 38px; }
}

@media (max-width: 760px) {
  .extension-hero, .extension-setup, .extension-details, .extension-final, .extension-summary { padding-inline: 12px; }
  .extension-hero { padding-top: 66px; }
  .extension-hero h1 { font-size: clamp(42px, 13vw, 58px); }
  .extension-flow-head { align-items: flex-start; flex-direction: column; }
  .extension-flow-list { padding-inline: 20px; }
  .extension-flow-list li { grid-template-columns: 30px 1fr; gap: 10px; }
  .extension-setup-grid { gap: 38px; }
  .extension-steps { padding-inline: 20px; }
  .extension-steps li { grid-template-columns: 26px 1fr; gap: 10px; }
  .extension-details-heading, .extension-final-inner { align-items: flex-start; flex-direction: column; }
  .extension-details-heading .extension-kicker { order: 0; }
  .extension-final .primary-pill { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  .extension-page *, .extension-page *::before, .extension-page *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

/* Fewer cards (Oct 2026, both themes): the flow and the setup steps sit on the page. */
.extension-page :is(.extension-flow-card, .extension-steps) { padding-inline: 0; border: 0; border-top: 1px solid var(--extension-line); border-radius: 0; background: none; box-shadow: none; }