:root {
  --bg: #0f172a;
  --card: #ffffff;
  --text: #13202c;
  --muted: #5f6f80;
  --accent: #f97316;
  --accent-strong: #ea580c;
  --sky: #dff4ff;
  --border: #e6edf5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.35), transparent 32rem),
    linear-gradient(180deg, #fff7ed, #f8fafc 58%);
  color: var(--text);
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px;
}

.topnav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.brand-stack {
  display: grid;
  gap: 6px;
}

.brand {
  font-weight: 800;
  font-size: 22px;
  color: var(--bg);
  text-decoration: none;
}

.apps-index-link {
  display: inline-flex;
  width: fit-content;
  color: var(--accent-strong);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.apps-index-link:hover {
  text-decoration: underline;
}

.langs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.langs .label {
  font-size: 14px;
  color: var(--muted);
  margin-right: 4px;
}

.langs a {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}

.langs a.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.mobile-lang {
  display: none;
}

.mobile-lang summary {
  cursor: pointer;
  list-style: none;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
}

.mobile-lang summary::-webkit-details-marker {
  display: none;
}

.mobile-lang-list {
  display: grid;
  gap: 8px;
  margin-top: 8px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
}

.mobile-lang-list a {
  padding: 9px 10px;
  border-radius: 12px;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}

.mobile-lang-list a.active {
  background: var(--accent);
  color: #fff;
}

.hero {
  background:
    linear-gradient(90deg, rgba(15, 23, 42, 0.5), rgba(15, 23, 42, 0.34) 55%, rgba(15, 23, 42, 0.28)),
    linear-gradient(135deg, #2b9ec3, #9a8c72 55%, #f97316),
    var(--accent);
  color: #fff;
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 20px 40px rgba(249, 115, 22, 0.18);
}

.app-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 28px;
  align-items: center;
  overflow: hidden;
}

.hero-copy {
  min-width: 0;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: 42px;
  line-height: 1;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.hero p {
  margin: 0;
  font-size: 18px;
  line-height: 1.5;
  max-width: 680px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-frame {
  width: 180px;
  height: 360px;
  overflow: hidden;
  border: 9px solid rgba(15, 23, 42, 0.9);
  border-radius: 34px;
  background: #000;
  box-shadow:
    0 22px 46px rgba(15, 23, 42, 0.24),
    0 0 0 1px rgba(255, 255, 255, 0.28);
}

.phone-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px;
  margin-top: 18px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.feature {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 247, 237, 0.88)),
    var(--card);
  border: 1px solid rgba(249, 115, 22, 0.18);
  border-radius: 20px;
  padding: 22px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
}

.feature .icon {
  display: inline-grid;
  place-items: center;
  min-width: 42px;
  height: 42px;
  margin-bottom: 14px;
  padding: 0 10px;
  border-radius: 14px;
  background: linear-gradient(135deg, #38bdf8, #f97316);
  color: #fff;
  font-weight: 900;
  letter-spacing: 0;
}

.feature h3 {
  margin: 0 0 8px;
  font-size: 19px;
  line-height: 1.2;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

.highlight {
  background:
    linear-gradient(135deg, rgba(56, 189, 248, 0.12), rgba(249, 115, 22, 0.14)),
    var(--card);
  border-color: rgba(249, 115, 22, 0.26);
}

h2 {
  margin: 0 0 14px;
  font-size: 24px;
}

p {
  line-height: 1.55;
}

ul {
  margin: 0;
  padding-left: 20px;
}

li {
  margin: 8px 0;
  line-height: 1.45;
}

.links a,
.button {
  display: inline-block;
  margin: 0 12px 10px 0;
  padding: 10px 14px;
  background: #fff7ed;
  border-radius: 12px;
  color: var(--accent-strong);
  text-decoration: none;
}

.hero .button {
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.38);
  color: #fff;
}

.hero .button.primary {
  background: #fff;
  color: var(--accent-strong);
}

.faq {
  margin: 0;
}

.faq dt {
  margin-top: 16px;
  font-weight: 800;
}

.faq dt:first-child {
  margin-top: 0;
}

.faq dd {
  margin: 6px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.footer {
  margin-top: 22px;
  color: var(--muted);
  font-size: 14px;
}

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

a.email {
  color: var(--accent-strong);
}

@media (max-width: 860px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .container {
    padding: 18px;
  }

  .topnav {
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 18px;
  }

  .langs {
    display: none;
  }

  .mobile-lang {
    display: block;
    width: 100%;
  }

  .hero {
    padding: 24px;
  }

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

  .hero h1 {
    font-size: 32px;
    line-height: 1.05;
  }

  .hero p {
    font-size: 17px;
    line-height: 1.42;
  }

  .hero-visual {
    justify-content: flex-start;
  }

  .phone-frame {
    width: min(150px, 62vw);
    height: 280px;
    border-width: 7px;
    border-radius: 28px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }
}