:root {
  --text: #111827;
  --muted: #4b5563;
  --line: rgba(0, 0, 0, .10);
  --card: #ffffff;
  --brand: #1d4ed8;
  --bg: #f7f8fb;
  --nav: #ffffff;
  --focus: 0 0 0 3px rgba(29, 78, 216, .22);
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #e5e7eb;
    --muted: #cbd5e1;
    --line: rgba(255, 255, 255, .16);
    --card: #0b1220;
    --brand: #93c5fd;
    --bg: #0a1020;
    --nav: #070c18;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.skip {
  position: absolute;
  left: -999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip:focus {
  left: 16px;
  top: 16px;
  width: auto;
  height: auto;
  padding: 10px 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--focus);
  z-index: 9999;
}

nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--nav);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand a {
  color: var(--brand);
  font-weight: 700;
  font-size: 18px;
  padding: 8px 10px;
  border-radius: 10px;
}

.nav-links {
  display: flex;
  gap: 18px;
  align-items: center;
}

.nav-links a,
.nav-menu summary {
  font-weight: 600;
  padding: 10px;
  border-radius: 10px;
}

.nav-links a:hover,
.nav-menu summary:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.brand a:focus-visible,
.nav-links a:focus-visible,
.nav-menu summary:focus-visible,
.store-badge:focus-visible,
.text-link:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.nav-menu {
  position: relative;
}

.nav-menu summary {
  display: inline-flex;
  gap: 7px;
  cursor: pointer;
  list-style: none;
}

.nav-menu summary::-webkit-details-marker {
  display: none;
}

.nav-menu summary::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(4px);
}

.nav-menu-panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 240px;
  padding: 8px;
  display: grid;
  gap: 2px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, .12);
}

.nav-menu-panel a {
  white-space: nowrap;
}

header {
  padding: clamp(34px, 7vw, 72px) 0 28px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(220px, .9fr);
  gap: clamp(22px, 5vw, 44px);
  align-items: center;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.08;
}

.hero p,
.section-sub,
.guide p,
.faq-item p {
  color: var(--muted);
}

.hero p {
  margin: 0;
  max-width: 640px;
  font-size: 16px;
}

.hero-media {
  text-align: center;
}

.hero-media img {
  width: min(240px, 100%);
  height: auto;
}

.guide,
.related,
.faq,
.cta {
  padding: 22px 0 48px;
}

.guide .container,
.faq .container {
  max-width: 900px;
}

h2 {
  margin: 30px 0 10px;
  font-size: 24px;
}

h3 {
  margin: 0 0 6px;
  font-size: 18px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card,
.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

.text-link {
  color: var(--brand);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.store-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.store-badge {
  height: 56px;
  display: inline-flex;
  align-items: center;
  border-radius: 10px;
}

.store-badge img {
  height: 56px;
  width: auto;
  display: block;
}

footer {
  border-top: 1px solid var(--line);
  background: var(--nav);
  text-align: center;
  padding: 28px 0;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 8px;
}

.icon-btn {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--text);
  background: transparent;
}

.icon-btn:hover {
  border-color: rgba(29, 78, 216, .35);
  color: var(--brand);
}

.icon-btn:focus-visible,
.footer-email:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.inline-icon {
  width: 15px;
  height: 15px;
  display: inline-block;
}

.icon-btn svg {
  display: block;
}

.footer-email {
  display: inline-block;
  padding: 10px 0;
}

.legal {
  color: var(--muted);
  font-size: 13px;
  margin-top: 8px;
}

.legal a {
  text-decoration: underline;
  text-underline-offset: 3px;
  margin: 0 6px;
}

@media (max-width: 860px) {
  .nav-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 10px 20px;
  }

  .nav-links {
    width: 100%;
    gap: 8px;
    flex-wrap: wrap;
  }

  .nav-links a,
  .nav-menu summary {
    padding: 8px;
    font-size: 14px;
  }

  .nav-menu {
    position: static;
  }

  .nav-menu-panel {
    left: 20px;
    right: 20px;
    min-width: 0;
  }

  .hero,
  .cards {
    grid-template-columns: 1fr;
  }
}