:root {
  --bg: #0f1117;
  --bg-alt: #161923;
  --card: #1b1e27;
  --border: #2a2e3a;
  --text: #e8e8ec;
  --muted: #9a9ea8;
  --accent: #4f6bff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: inherit;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(15, 17, 23, 0.85);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
  color: var(--text);
}

.logo-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
}

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

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

.nav-cta {
  background: var(--accent);
  color: white !important;
  padding: 8px 16px;
  border-radius: 8px;
}

/* Buttons */
.btn {
  display: inline-block;
  text-decoration: none;
  border-radius: 10px;
  padding: 12px 24px;
  font-weight: 600;
  font-size: 15px;
  transition: opacity 0.15s;
}

.btn:hover {
  opacity: 0.9;
}

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

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

.btn-block {
  display: block;
  text-align: center;
  width: 100%;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 17px;
}

/* Hero */
.hero {
  padding: 96px 0 72px;
  text-align: center;
}

.hero h1 {
  font-size: 44px;
  line-height: 1.15;
  margin: 0 0 16px;
  max-width: 720px;
  margin-inline: auto;
}

.hero-sub {
  color: var(--muted);
  font-size: 18px;
  max-width: 560px;
  margin: 0 auto 32px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.hero-note {
  color: var(--muted);
  font-size: 13px;
}

/* Features */
.features {
  padding: 64px 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.features h2,
.pricing h2,
.download h2 {
  text-align: center;
  font-size: 30px;
  margin-bottom: 40px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

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

/* Pricing */
.pricing {
  padding: 72px 0;
}

.price-card {
  max-width: 360px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
}

.price-amount {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 24px;
}

.price-amount span {
  display: block;
  font-size: 14px;
  font-weight: 400;
  color: var(--muted);
}

.price-features {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  text-align: start;
}

.price-features li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}

.price-features li:last-child {
  border-bottom: none;
}

/* Download */
.download {
  padding: 72px 0 96px;
  text-align: center;
}

.download p {
  color: var(--muted);
  margin-bottom: 28px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links {
  display: flex;
  gap: 16px;
}

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

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

@media (max-width: 640px) {
  .hero h1 {
    font-size: 32px;
  }
  .nav {
    gap: 12px;
  }
  .nav a:not(.nav-cta) {
    display: none;
  }
}