:root {
  --night: #0d1226;
  --deep: #141a33;
  --card: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.1);
  --dawn: #f0c27a;
  --text: #f4f1ea;
  --muted: rgba(244, 241, 234, 0.68);
  --max: 720px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  min-height: 100vh;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(240, 194, 122, 0.12), transparent 50%),
              radial-gradient(900px 500px at 0% 100%, rgba(80, 110, 180, 0.12), transparent 45%),
              var(--night);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Helvetica Neue", sans-serif;
}

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

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

header {
  position: sticky;
  top: 0;
  z-index: 2;
  backdrop-filter: blur(16px);
  background: rgba(13, 18, 38, 0.82);
  border-bottom: 1px solid var(--line);
}
.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 650;
  letter-spacing: 0.01em;
}
.brand img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
}
nav { display: flex; gap: 18px; font-size: 15px; }
nav a { color: var(--muted); }
nav a[aria-current="page"], nav a:hover { color: var(--text); text-decoration: none; }

main { padding: 48px 0 72px; }
h1 {
  font-size: clamp(32px, 6vw, 46px);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 18px 0 12px;
}
h2 {
  font-size: 22px;
  margin: 36px 0 10px;
  letter-spacing: -0.02em;
}
p { color: var(--muted); margin: 0 0 10px; }
.lead { font-size: 18px; }
.zh { opacity: 0.92; }

.hero {
  display: grid;
  gap: 22px;
  padding: 8px 0 28px;
}
.hero img.app-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}
.kicker {
  color: var(--dawn);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.grid { display: grid; gap: 12px; margin: 22px 0; }
@media (min-width: 640px) { .grid.two { grid-template-columns: 1fr 1fr; } }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 18px 14px;
}
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0 0 8px; font-size: 15px; }

.note {
  border-left: 3px solid var(--dawn);
  padding: 4px 0 4px 14px;
  margin: 18px 0;
}

ol, ul { color: var(--muted); padding-left: 1.2em; }
li { margin: 0 0 10px; }

footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 13px;
}
footer .links { display: flex; gap: 16px; margin-bottom: 10px; }
footer .links a { color: var(--muted); }

.badge {
  display: inline-block;
  margin-top: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}