:root {
  --bg-base: #faf7ee;
  --bg-panel: #f2ecd7;
  --bg-black: #171310;
  --accent-yellow: #f0c419;
  --accent-yellow-deep: #9b7100;
  --text-primary: #171310;
  --text-muted: #5c5344;
  --text-on-black: #f7f0dc;
  --line: rgba(23, 19, 16, 0.15);
  --line-on-black: rgba(247, 240, 220, 0.18);
  --wrap: 1120px;
  --content: 850px;
  --radius: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: Helvetica, Arial, sans-serif;
  font-size: 16.5px;
  line-height: 1.65;
}

img { display: block; max-width: 100%; }
h1, h2, h3 { margin: 0 0 0.55em; color: var(--text-primary); font-weight: 700; line-height: 1.16; }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.55rem, 3vw, 2.2rem); }
h3 { font-size: 1.08rem; }
p { max-width: 68ch; margin: 0 0 1em; color: var(--text-muted); }
a { color: var(--accent-yellow-deep); font-weight: 700; text-underline-offset: 3px; }

.wrap { width: min(100%, var(--wrap)); margin-inline: auto; padding-inline: 28px; }
.content-wrap { max-width: var(--content); }
.section-label { margin-bottom: 0.6rem; color: var(--accent-yellow-deep); font-size: 0.76rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; }

.site-head { background: var(--bg-black); }
.site-head__banner { width: min(100%, 956px); margin-inline: auto; padding: 20px 28px 0; }
.site-head__banner img { width: 100%; height: auto; aspect-ratio: 45 / 11; object-fit: contain; object-position: center; border: 1px solid var(--line-on-black); border-radius: 14px; }
.site-head__row { display: flex; align-items: center; justify-content: space-between; min-height: 74px; gap: 28px; }
.site-head__mark { color: var(--text-on-black); font-size: 1.04rem; font-weight: 700; text-decoration: none; }
.site-head__nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 9px 22px; }
.site-head__nav a { color: rgba(247, 240, 220, 0.7); font-size: 0.88rem; font-weight: 400; text-decoration: none; transition: color 0.2s ease; }
.site-head__nav a:hover, .site-head__nav a:focus-visible { color: var(--accent-yellow); }

.hero { padding-block: clamp(58px, 9vw, 100px); border-bottom: 1px solid var(--line); }
.hero__grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr); align-items: start; gap: clamp(40px, 8vw, 100px); }
.hero__kicker { margin-bottom: 0.7em; color: var(--accent-yellow-deep); font-size: 0.82rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; }
.hero__copy { padding-top: 28px; }
.hero__lead { font-size: 1.04rem; }
.hero__specs { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin: 4px 0 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--line); }
.hero__specs div { padding: 22px 24px; background: var(--bg-panel); }
.hero__specs dt { margin-bottom: 4px; color: var(--text-muted); font-size: 0.72rem; }
.hero__specs dd { margin: 0; font-weight: 700; }
.hero__specs dd::before { content: ""; display: inline-block; width: 8px; height: 8px; margin-right: 9px; border-radius: 50%; background: var(--accent-yellow); }

.android { padding-block: clamp(66px, 9vw, 100px); border-bottom: 1px solid var(--line); background: var(--bg-panel); }
.install-steps { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 30px 0 34px; padding: 0; list-style: none; }
.install-steps li { display: flex; align-items: flex-start; gap: 14px; min-height: 94px; padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg-base); }
.install-steps li:last-child { grid-column: 1 / -1; min-height: 0; }
.install-steps span { flex: none; color: var(--accent-yellow-deep); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; }
.install-steps strong { font-size: 0.96rem; }

.ios { padding-block: clamp(66px, 9vw, 100px); border-bottom: 1px solid var(--line); }
.ios__grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(310px, 0.92fr); align-items: start; gap: clamp(42px, 8vw, 100px); }
.requirements { padding: 30px; border: 2px solid var(--bg-black); border-radius: var(--radius); box-shadow: 10px 10px 0 var(--accent-yellow); background: var(--bg-base); }
.requirements ul { margin: 0; padding-left: 1.2em; color: var(--text-muted); }
.requirements li + li { margin-top: 0.5em; }

.comparison { padding-block: clamp(66px, 9vw, 100px); border-bottom: 1px solid var(--line); background: var(--bg-black); }
.comparison h2, .comparison .benefits strong { color: var(--text-on-black); }
.comparison p { color: rgba(247, 240, 220, 0.72); }
.comparison .section-label { color: var(--accent-yellow); }
.benefits { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin: 30px 0 34px; padding: 1px; list-style: none; background: var(--line-on-black); }
.benefits li { display: grid; gap: 6px; min-height: 116px; padding: 22px; background: #211c18; }
.benefits li:last-child { grid-column: 1 / -1; min-height: 0; }
.benefits span { color: rgba(247, 240, 220, 0.64); font-size: 0.92rem; }

.errors { padding-block: clamp(66px, 9vw, 100px); border-bottom: 1px solid var(--line); }
.errors__grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(280px, 0.88fr); align-items: start; gap: clamp(42px, 8vw, 100px); }
.errors aside { padding: 28px; border-left: 5px solid var(--accent-yellow); background: var(--bg-panel); }
.errors aside p { margin-bottom: 0; }

.faq { padding-block: clamp(66px, 9vw, 100px); border-bottom: 1px solid var(--line); background: var(--bg-panel); }
.faq__list { margin-top: 28px; }
.faq__item { padding: 20px 0; border-top: 1px solid var(--line); }
.faq__item:last-child { border-bottom: 1px solid var(--line); }
.faq__item summary { display: flex; align-items: center; justify-content: space-between; gap: 18px; color: var(--text-primary); cursor: pointer; font-weight: 700; list-style: none; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: "+"; flex: none; color: var(--accent-yellow-deep); font-size: 1.5rem; font-weight: 400; line-height: 1; }
.faq__item[open] summary::after { content: "−"; }
.faq__item p { margin: 14px 0 0; }

.site-foot { padding-top: 58px; background: var(--bg-base); }
.site-foot__grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 38px; padding-bottom: 42px; }
.site-foot__col p { font-size: 0.92rem; }
.site-foot__legal { padding-block: 18px; border-top: 1px solid var(--line); color: var(--text-muted); font-size: 0.8rem; }

@media (max-width: 860px) {
  .hero__grid, .ios__grid, .errors__grid { grid-template-columns: 1fr; }
  .hero__copy { padding-top: 0; }
  .hero__specs { grid-column: auto; }
  .site-foot__grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .wrap { padding-inline: 20px; }
  .site-head__banner { width: 100%; padding: 14px 16px 0; }
  .site-head__row { align-items: flex-start; flex-direction: column; min-height: 0; padding-block: 18px; }
  .site-head__nav { justify-content: flex-start; gap: 8px 16px; }
  .site-head__nav a { font-size: 0.84rem; }
  .hero { padding-top: 48px; }
  .hero__grid { gap: 22px; }
  .hero__specs { grid-template-columns: 1fr; }
  .install-steps, .benefits { grid-template-columns: 1fr; }
  .install-steps li:last-child, .benefits li:last-child { grid-column: auto; }
  .install-steps li, .benefits li { min-height: 0; }
  .requirements { box-shadow: 7px 7px 0 var(--accent-yellow); }
}

@media (max-width: 420px) {
  .wrap { padding-inline: 16px; }
  .site-head__nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}