:root {
  color-scheme: light dark;
  --bg: #0d1112;
  --surface: #151a1b;
  --text: #f4f7f7;
  --muted: #a8b3b5;
  --line: #283032;
  --accent: #4db6ac;
  --accent-strong: #2f9f94;
  --max: 980px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: var(--accent);
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 22px;
}

.nav {
  border-bottom: 1px solid var(--line);
  background: rgba(13, 17, 18, 0.92);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 9px;
}

.links {
  display: flex;
  gap: 18px;
  font-size: 15px;
}

.links a {
  color: var(--muted);
  text-decoration: none;
}

.links a:hover {
  color: var(--text);
}

.hero {
  padding: 74px 0 58px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 46px;
  align-items: center;
}

.app-icon {
  width: 112px;
  height: 112px;
  border-radius: 24px;
  box-shadow: 0 22px 70px rgba(77, 182, 172, 0.18);
}

h1 {
  margin: 22px 0 16px;
  max-width: 680px;
  font-size: clamp(40px, 7vw, 74px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 16px;
  font-size: 28px;
  letter-spacing: 0;
}

p {
  margin: 0 0 16px;
}

.lead {
  max-width: 640px;
  color: var(--muted);
  font-size: 20px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #041312;
  font-weight: 700;
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  color: var(--accent);
}

.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 28px;
}

.feature-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  display: flex;
  gap: 12px;
  color: var(--muted);
}

.feature-list li::before {
  content: "";
  flex: 0 0 9px;
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.section {
  padding: 34px 0;
}

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

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 22px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.card p,
.muted {
  color: var(--muted);
}

.support-list {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.support-item {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.footer {
  margin-top: 44px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 760px) {
  .nav-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .hero {
    padding-top: 46px;
  }

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

  h1 {
    font-size: 44px;
  }
}