:root {
  --bg: #0f0a1f;
  --bg-alt: #1a1233;
  --text: #f4ecff;
  --text-muted: #b9a8d8;
  --accent: #d4af37;
  --accent-soft: #f0d97a;
  --border: rgba(244, 236, 255, 0.12);
  --max-width: 720px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: radial-gradient(ellipse at top, #1a1233 0%, #0f0a1f 60%);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.hero {
  text-align: center;
  padding: 64px 24px 48px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  box-shadow: 0 8px 32px rgba(212, 175, 55, 0.25);
  margin-bottom: 24px;
}

h1 {
  font-size: 36px;
  margin: 0 0 8px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

h1 .sub {
  display: block;
  font-size: 18px;
  font-weight: 400;
  color: var(--text-muted);
  margin-top: 4px;
  letter-spacing: 0.05em;
}

.tagline {
  font-size: 18px;
  color: var(--accent-soft);
  margin: 4px 0;
}

.tagline.en {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 32px;
}

.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: transform 0.15s ease;
}

.cta:hover {
  transform: translateY(-1px);
}

.cta.primary {
  background: var(--accent);
  color: #1a0f00;
}

.cta.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.section h2 {
  font-size: 22px;
  margin: 0 0 24px;
  color: var(--accent-soft);
  font-weight: 600;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 20px;
}

.feature-list li {
  padding: 20px;
  background: rgba(244, 236, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.feature-list strong {
  display: block;
  font-size: 16px;
  color: var(--text);
}

.feature-list strong[lang="en"] {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 400;
  margin-bottom: 8px;
}

.feature-list p {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 14px;
}

.feature-list p[lang="en"] {
  font-size: 13px;
  opacity: 0.8;
}

.install-steps {
  padding-left: 20px;
  margin: 0;
  display: grid;
  gap: 12px;
}

.install-steps li {
  color: var(--text);
  font-size: 15px;
}

.install-steps span {
  display: block;
}

.install-steps span[lang="en"] {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

.install-steps code {
  background: rgba(244, 236, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
}

.disclaimer {
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

.disclaimer p {
  margin: 4px 0;
}

footer {
  text-align: center;
  padding: 32px 24px 48px;
  color: var(--text-muted);
  font-size: 13px;
}

footer a {
  color: var(--accent-soft);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

@media (max-width: 480px) {
  .hero {
    padding: 48px 20px 32px;
  }
  h1 {
    font-size: 28px;
  }
  .section {
    padding: 32px 0;
  }
}