:root {
  --bg: #f6f8fc;
  --surface: #ffffff;
  --text: #121826;
  --muted: #5b6475;
  --line: #dfe5f0;
  --accent: #1a40d2;
  --accent-2: #4a8dff;
  --dot: #ff5a1f;
  --shadow: 0 18px 50px rgba(26, 64, 210, 0.16);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d111a;
    --surface: #151b28;
    --text: #eef2fa;
    --muted: #9aa5b9;
    --line: #262f42;
    --accent: #6aa2ff;
    --accent-2: #4a8dff;
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  overflow-wrap: break-word;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial,
    "Hiragino Sans", "PingFang SC", "Apple SD Gothic Neo", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; display: block; }

.hero > *, .feature > * { min-width: 0; }

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px max(16px, env(safe-area-inset-left));
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--text); }
.brand img { border-radius: 8px; }
.brand:hover { text-decoration: none; }

.top nav { display: flex; gap: 20px; margin-left: auto; font-size: 15px; }
.top nav a { color: var(--muted); }
.top nav a:hover { color: var(--text); text-decoration: none; }

.langs { position: relative; font-size: 15px; }
.langs summary { cursor: pointer; color: var(--muted); list-style: none; padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; }
.langs summary::-webkit-details-marker { display: none; }
.langs summary::after { content: " ▾"; }
.langs ul {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  margin: 0;
  padding: 8px 0;
  list-style: none;
  min-width: 200px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}
.langs li > * { display: block; padding: 6px 16px; }
.langs li a { color: var(--text); }

main { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr);
  gap: 48px;
  align-items: center;
  padding: 64px 0 40px;
}
.hero .icon { width: 112px; height: 112px; border-radius: 25px; box-shadow: var(--shadow); margin-bottom: 20px; }
.hero h1 { font-size: clamp(34px, 4.4vw, 50px); line-height: 1.1; margin: 0 0 8px; letter-spacing: -0.02em; }
.hero .subtitle {
  margin: 0 0 18px;
  font-size: 21px;
  font-weight: 600;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .lead { color: var(--muted); font-size: 18px; margin: 0 0 26px; }
.hero-media { margin: 0; }
.hero-media img, .feature figure img { border-radius: 14px; box-shadow: var(--shadow); }

.badge { display: inline-block; }
.badge img { height: 53px; width: auto; }
.avail { color: var(--muted); font-size: 15px; margin: 10px 0 0; }

.intro { max-width: 760px; margin: 0 auto; padding: 24px 0 40px; text-align: center; font-size: 19px; }

.feature {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
  padding: 44px 0;
  border-top: 1px solid var(--line);
}
.feature:nth-child(even) { grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); }
.feature:nth-child(even) figure { order: 2; }
.feature figure { margin: 0; }
.feature.text-only { grid-template-columns: 1fr; max-width: 760px; margin: 0 auto; }
.feature h2 { font-size: 15px; letter-spacing: 0.08em; color: var(--accent); margin: 0 0 10px; }
.feature h2::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 10px;
  border-radius: 50%;
  background: var(--dot);
  vertical-align: 1px;
}
.feature p { margin: 0 0 10px; }

.phones { padding: 48px 0; border-top: 1px solid var(--line); text-align: center; }
.phones h2 { font-size: 28px; margin: 0 0 28px; }
.strip { display: flex; gap: 20px; overflow-x: auto; padding: 8px 4px 24px; scroll-snap-type: x mandatory; }
.strip img { width: 230px; flex: 0 0 auto; border-radius: 22px; box-shadow: var(--shadow); scroll-snap-align: center; }

.closing { text-align: center; padding: 40px 0; border-top: 1px solid var(--line); }

.fine { color: var(--muted); font-size: 14px; }

.support { padding: 48px 0 64px; border-top: 1px solid var(--line); max-width: 760px; margin: 0 auto; }
.support h2 { font-size: 28px; margin: 0 0 8px; }
.support h3 { font-size: 18px; margin: 28px 0 8px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin: 10px 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: 10px 0 0; color: var(--muted); }

.prose { max-width: 760px; padding: 48px 20px 64px; }
.prose h1 { font-size: 34px; line-height: 1.2; margin: 0 0 24px; }
.prose h2 { font-size: 20px; margin: 28px 0 6px; }

.bottom { border-top: 1px solid var(--line); padding: 28px 20px 40px; text-align: center; color: var(--muted); font-size: 15px; }
.footlangs { list-style: none; padding: 0; margin: 0 0 14px; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 16px; }
.bottom p { margin: 6px 0; }

@media (max-width: 860px) {
  .top { gap: 12px; }
  .top nav { gap: 14px; font-size: 14px; }
  .hero, .feature, .feature:nth-child(even) { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .feature:nth-child(even) figure { order: 0; }
  .hero { padding-top: 36px; text-align: center; }
  .hero .icon { margin-left: auto; margin-right: auto; }
}

@media (max-width: 560px) {
  .top nav a:first-child { display: none; }
  .brand span { display: none; }
  .strip img { width: 200px; }
}