:root {
  --bg: #fafafa;
  --text: #16161a;
  --muted: #6b6b74;
  --border: #e9e9ee;
  --accent: #2f6fed;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(480px 320px at 85% -8%, rgba(47,111,237,0.08), transparent 70%),
    radial-gradient(420px 300px at -10% 20%, rgba(255,193,7,0.07), transparent 70%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }

header {
  max-width: 680px;
  margin: 0 auto;
  padding: 28px 24px 0;
}
header a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.15s ease;
}
header a:hover { color: var(--text); }

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 24px 70px;
}
main h1 { font-size: 1.7rem; font-weight: 800; letter-spacing: -0.02em; margin-top: 0; }
main h2 { font-size: 1.15rem; font-weight: 700; margin-top: 2.2em; }
main p, main li { color: var(--text); }
main ul { padding-left: 1.3em; }

footer {
  max-width: 680px;
  margin: 0 auto;
  padding: 24px 24px 48px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
footer a { color: var(--muted); text-decoration: none; font-weight: 500; }
footer a:hover { color: var(--text); }

/* home page */
.hero {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-bottom: 36px;
}
.hero img {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  box-shadow: 0 6px 20px rgba(22,22,26,0.12);
}
.hero h1 {
  margin: 0 0 6px;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.download {
  margin: 8px 0 48px;
}
.download a {
  display: inline-block;
  line-height: 0;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.download a:hover { transform: translateY(-2px); opacity: 0.92; }
.download img {
  height: 54px;
  border-radius: 10px;
}

.screenshots {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding: 4px 4px 14px;
  margin: 0 -4px 48px;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}
.screenshots img {
  height: 340px;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(22,22,26,0.08);
  flex: none;
  scroll-snap-align: start;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.screenshots img:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(22,22,26,0.14);
}