.install-page { max-width: 1000px; margin: 0 auto; padding: 1rem 1.5rem 2rem; }
.install-heading { display: flex; align-items: center; gap: 1.25rem; margin-bottom: 1.5rem; }
.install-heading img { flex: none; border-radius: 16px; }
.install-heading h1 { margin: 0 0 .35rem; font-size: clamp(1.7rem, 4vw, 2.3rem); font-weight: 750; line-height: 1.2; }
.install-heading p, .install-help { color: var(--fp-muted); line-height: 1.65; }
.install-summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 0; margin-bottom: 1.5rem; border-top: 1px solid var(--fp-line); border-bottom: 1px solid var(--fp-line); }
.install-summary p { font-weight: 650; }
.install-layout { display: grid; grid-template-columns: 1.15fr 1fr; gap: 2.5rem; align-items: start; }
.install-layout h2 { font-size: 1.25rem; font-weight: 700; margin-bottom: 1rem; }
.install-guide { grid-column: 1; grid-row: 1; }
.install-notifications { grid-column: 2; grid-row: 1; border-left: 3px solid var(--fp-brand); padding: .25rem 0 .25rem 1.4rem; }
.install-notifications p { line-height: 1.65; }
.install-help { margin-top: 1rem; font-size: .875rem; }
.install-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin-top: 1.25rem; }
.install-button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: .7rem 1rem; border: 1px solid transparent; border-radius: 8px; background: var(--fp-brand); color: #fff; font: inherit; font-weight: 650; text-align: center; text-decoration: none; cursor: pointer; }
.install-button:hover { background: var(--fp-brand-deep); }
.install-button:disabled { opacity: .55; cursor: not-allowed; }
.install-text-button { min-height: 44px; padding: .5rem 0; border: 0; background: transparent; color: var(--fp-ink); font: inherit; text-decoration: underline; cursor: pointer; }
.install-page button:focus-visible, .install-page a:focus-visible, .install-page summary:focus-visible { outline: 3px solid var(--fp-accent); outline-offset: 3px; }
.install-page [hidden] { display: none !important; }
.install-guide details { border-bottom: 1px solid var(--fp-line); padding: 1rem 0; }
.install-guide details:first-of-type { padding-top: .25rem; }
.install-guide summary { min-height: 36px; font-weight: 650; cursor: pointer; }
.install-guide ol { margin: .6rem 0 .25rem 1.4rem; list-style: decimal; }
.install-guide li { padding-left: .3rem; margin-bottom: .7rem; line-height: 1.65; }
.install-guide details p { line-height: 1.65; margin-top: .5rem; }
.install-test-result { margin-top: 1rem; padding: .85rem 1rem; border: 1px solid var(--fp-line); border-radius: 8px; background: var(--fp-panel); line-height: 1.65; overflow-wrap: anywhere; }
.install-test-result[data-state="received"] { border-color: #238053; }
@media (max-width: 680px) {
  .install-page { padding: .5rem 1rem 1.5rem; }
  .install-heading { gap: 1rem; }
  .install-heading img { width: 56px; height: 56px; border-radius: 12px; }
  .install-layout { display: flex; flex-direction: column; gap: 2rem; }
  .install-notifications, .install-guide { width: 100%; }
  .install-notifications { padding-left: 1rem; }
  .install-summary { flex-wrap: wrap; }
}