.install-page { padding: clamp(2.5rem, 6vw, 5rem) 0; background: var(--offwhite); }
.install-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(2rem, 6vw, 5rem); }
.install-intro h1 { margin: 1rem 0 1.5rem; font-size: clamp(2.35rem, 4.5vw, 3.75rem); line-height: 1.12; letter-spacing: -.045em; }
.install-intro .section-lead { max-width: 29rem; }
.install-benefits { list-style: none; padding: 0; margin: 2rem 0; display: grid; gap: 1rem; font-weight: 600; }
.install-benefits li { display: flex; gap: .75rem; align-items: baseline; }
.install-benefits span { color: var(--muted); }
.install-note { color: var(--muted); font-size: .875rem; line-height: 1.7; max-width: 28rem; }
.install-card { padding: clamp(1.25rem, 3vw, 2.25rem); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); min-width: 0; }
.install-card-heading { display: flex; gap: 1rem; align-items: center; margin-bottom: 1.75rem; }
.install-card-heading img { border-radius: 16px; flex-shrink: 0; }
.install-card-heading h2 { margin: 0 0 .4rem; font-size: clamp(1.15rem, 2vw, 1.4rem); letter-spacing: -.03em; }
.install-card-heading p { margin: 0; font-size: .875rem; color: var(--muted); }
.install-choice { border: 0; padding: 0; margin: 0; min-width: 0; }
.install-choice legend { font-size: .8125rem; color: var(--muted); margin-bottom: .65rem; }
.install-toggle { display: grid; grid-template-columns: 1fr 1fr; gap: .3rem; padding: .3rem; border-radius: 14px; background: var(--offwhite); border: 1px solid var(--line); }
.install-toggle input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.install-toggle label { cursor: pointer; padding: .8rem .5rem; text-align: center; border-radius: 10px; font-size: .9375rem; font-weight: 600; color: var(--muted); }
.install-toggle input:checked + label { background: var(--blue); color: white; box-shadow: var(--shadow-sm); }
.install-toggle input:focus-visible + label { outline: 3px solid var(--ink); outline-offset: 3px; }
.install-browser { margin: 1.5rem 0 1rem; font-size: .8125rem; font-weight: 600; color: var(--muted); }
.install-steps { list-style: none; counter-reset: install-step; padding: 0; margin: 0; display: grid; gap: 1.2rem; }
.install-steps li { display: flex; gap: .875rem; counter-increment: install-step; }
.install-steps li::before { content: counter(install-step); width: 1.75rem; height: 1.75rem; flex-shrink: 0; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; font-size: .8125rem; font-weight: 600; }
.install-steps strong { font-size: .9375rem; }
.install-steps p { margin: .3rem 0 0; font-size: .875rem; color: var(--muted); line-height: 1.6; }
.install-help { margin: 1.25rem 0; padding-top: 1rem; border-top: 1px solid var(--line); font-size: .8125rem; color: var(--muted); line-height: 1.6; }
.install-card:has(#install-iphone:checked) .install-android,
.install-card:has(#install-android:checked) .install-iphone { display: none; }
.install-open { display: flex; justify-content: center; gap: .75rem; width: 100%; text-decoration: none; }
.install-card-note { margin: .85rem 0 0; text-align: center; color: var(--muted); font-size: .75rem; line-height: 1.6; }
@media (max-width: 820px) {
    .install-grid { grid-template-columns: 1fr; gap: 2rem; max-width: 36rem; }
    .install-intro h1 { font-size: clamp(2.25rem, 8vw, 3rem); }
    .install-benefits { margin: 1.5rem 0; gap: .75rem; font-size: .875rem; }
}