*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0a0a0f;
  --surface: #12121a;
  --surface-2: #1a1a25;
  --border: #2a2a3a;
  --text: #e8e8f0;
  --text-dim: #8888a0;
  --accent: #7c6ff0;
  --accent-hover: #9585ff;
  --radius: 10px;
  --max-w: 960px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text);
}

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

.nav-btn {
  padding: 8px 18px;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font-weight: 500;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.nav-btn:hover {
  background: var(--accent-hover);
  color: #fff;
}

.hero {
  padding: 100px 24px 80px;
  text-align: center;
}

.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto 32px;
}

.hero-download {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.version-badge {
  font-size: 0.85rem;
  color: var(--text-dim);
  background: var(--surface);
  padding: 6px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.platforms-hero {
  margin-top: 24px;
  font-size: 1.5rem;
  display: flex;
  gap: 16px;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}

.btn-secondary {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--border);
  color: #fff;
}

.features {
  padding: 80px 24px;
  background: var(--surface);
}

.features-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.features h2 {
  text-align: center;
  font-size: 1.8rem;
  margin-bottom: 48px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg);
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.feature-card h3 {
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.feature-card p {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.download {
  padding: 80px 24px;
}

.download-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  text-align: center;
}

.download h2 {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

#download-subtitle {
  color: var(--text-dim);
  margin-bottom: 40px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.download-card {
  background: var(--surface);
  padding: 32px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-align: center;
}

.download-platform {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.download-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.download-links .btn {
  width: 100%;
}

footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}

@media (max-width: 600px) {
  .hero {
    padding: 60px 16px 48px;
  }

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