.app-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: 70px; padding: 8px 0 44px; }
.app-hero-copy { padding: 20px 0; }
.app-hero h1 { margin: 18px 0 22px; font-size: clamp(38px, 3.8vw, 52px); line-height: 1.22; letter-spacing: -1.6px; }
.app-hero h1 span { display: block; }
.app-hero h1 span:last-child { color: var(--accent); }
.app-lead { max-width: 405px; color: var(--muted); font-size: 15px; line-height: 1.95; }
.app-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 15px 22px; margin: 28px 0 22px; }
.app-actions .button { min-height: 49px; font-size: 14px; padding: 12px 22px; }
.app-facts { display: flex; flex-wrap: wrap; gap: 10px 20px; padding-top: 17px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.app-availability { margin-top: 8px; color: var(--muted); font-size: 11px; }
.app-preview { position: relative; min-width: 0; height: 520px; overflow: hidden; border: 1px solid var(--line); background: var(--soft); }
.app-preview-label { position: absolute; top: 21px; left: 22px; right: 22px; display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--muted); font: 10px/1.6 var(--mono); }
.app-preview-label .index-mark { flex-shrink: 0; }
.app-phone { position: absolute; padding: 5px; border: 1px solid #c8c8c8; border-radius: 23px; background: var(--ink); box-shadow: 0 16px 26px #17171716; }
.app-phone img { display: block; width: 100%; height: auto; border-radius: 18px; }
.app-phone-feed { width: 205px; top: 66px; left: calc(50% - 181px); z-index: 2; }
.app-phone-tools { width: 183px; top: 102px; left: calc(50% + 16px); z-index: 1; }
.app-features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-block: 1px solid var(--line); padding: 26px 0; }
.app-features article { padding: 0 28px; border-left: 1px solid var(--line); }
.app-features article:first-child { padding-left: 0; border-left: 0; }
.app-features article:last-child { padding-right: 0; }
.app-feature-mark { display: flex; align-items: center; gap: 12px; margin-bottom: 15px; color: var(--accent); }
.app-feature-mark .section-index { margin: 0; }
.app-features h2 { font-size: 18px; letter-spacing: -.4px; line-height: 1.5; margin-bottom: 9px; }
.app-features p { color: var(--muted); font-size: 12px; line-height: 1.9; }
.app-installation { padding: 36px 0 30px; }
.app-installation h2 { margin: 12px 0 25px; font-size: 27px; }
.app-installation ol { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; padding: 0; margin: 0; list-style: none; }
.app-installation li { display: flex; align-items: flex-start; gap: 14px; }
.app-step { display: grid; place-items: center; flex: 0 0 27px; height: 27px; color: var(--accent); border: 1px solid var(--line); font: 11px var(--mono); }
.app-installation h3 { font-size: 13px; line-height: 1.6; margin: 2px 0 6px; }
.app-installation p { color: var(--muted); font-size: 12px; line-height: 1.85; }
.app-integrity { margin: 0 0 44px; padding: 17px 0; border-block: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.app-integrity summary { cursor: pointer; width: fit-content; }
.app-integrity p { margin-top: 14px; }
.app-integrity code { display: block; overflow-wrap: anywhere; font: 11px/1.8 var(--mono); margin-top: 5px; }
.app-privacy { padding-bottom: 60px; }
@media (max-width: 1100px) {
    .app-hero { gap: 35px; }
    .app-preview { height: 480px; }
    .app-phone-feed { width: 183px; left: calc(50% - 163px); }
    .app-phone-tools { width: 163px; left: calc(50% + 9px); }
    .app-features article { padding-inline: 20px; }
}
@media (max-width: 760px) {
    .app-hero { grid-template-columns: 1fr; gap: 25px; padding: 0 0 28px; }
    .app-hero-copy { padding: 0; }
    .app-hero h1 { font-size: 38px; margin: 15px 0 17px; }
    .app-lead { font-size: 14px; max-width: 460px; }
    .app-actions { margin: 23px 0 20px; gap: 15px; }
    .app-actions .button { font-size: 13px; }
    .app-facts { font-size: 10px; gap: 7px 14px; }
    .app-preview { width: 100%; max-width: 480px; height: 438px; margin-inline: auto; }
    .app-preview-label { top: 17px; left: 17px; right: 17px; font-size: 9px; }
    .app-phone-feed { width: 171px; top: 54px; left: calc(50% - 151px); }
    .app-phone-tools { width: 151px; top: 84px; left: calc(50% + 9px); }
    .app-features { grid-template-columns: 1fr; padding: 0; }
    .app-features article, .app-features article:first-child, .app-features article:last-child { padding: 22px 0; border-left: 0; border-bottom: 1px solid var(--line); }
    .app-features article:last-child { border-bottom: 0; }
    .app-feature-mark { margin-bottom: 11px; }
    .app-installation { padding: 28px 0; }
    .app-installation h2 { font-size: 24px; }
    .app-installation ol { grid-template-columns: 1fr; gap: 23px; }
    .app-integrity { margin-bottom: 30px; }
}
@media (max-width: 360px) {
    .app-hero h1 { font-size: 34px; }
    .app-preview { height: 392px; }
    .app-phone-feed { width: 150px; left: calc(50% - 131px); }
    .app-phone-tools { width: 130px; left: calc(50% + 6px); }
}
@media (prefers-reduced-motion: no-preference) {
    .app-phone { animation: app-preview-enter .55s ease-out both; }
    .app-phone-tools { animation-delay: .08s; }
    @keyframes app-preview-enter { from { opacity: 0; translate: 0 12px; } to { opacity: 1; translate: 0 0; } }
}