:root {
  --bg: #080B12;
  --surface: #111622;
  --surface-elevated: #171E2E;
  --border: rgba(255, 255, 255, 0.08);
  --text: #F3F5F8;
  --text-muted: #9AA4B8;
  --accent: #C6FF00;
  --accent-dim: rgba(198, 255, 0, 0.14);
  --cyan: #00E5FF;
  --radius: 16px;
}

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

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

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

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px;
}

header {
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  background: rgba(8, 11, 18, 0.85);
  z-index: 10;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}

.brand-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

.nav-links {
  display: flex;
  gap: 24px;
  font-size: 0.95rem;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--accent);
  text-decoration: none;
}

.hero {
  padding: 72px 0 56px;
  text-align: center;
}

.badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 20px;
}

h1 {
  font-size: clamp(2.1rem, 4.5vw, 3.2rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.12rem;
  max-width: 680px;
  margin: 0 auto 32px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #080B12;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 1rem;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn-primary:hover {
  transform: translateY(-1px);
  opacity: 0.92;
  text-decoration: none;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 32px 0 64px;
}

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

.card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--text);
}

.card p, .card li {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.screenshot-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin: 24px 0 64px;
}

.screenshot-slot {
  background: var(--surface-elevated);
  border: 1px dashed rgba(198, 255, 0, 0.35);
  border-radius: 24px;
  aspect-ratio: 9 / 19.5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  font-size: 0.88rem;
  overflow: hidden;
}

.screenshot-slot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 22px;
}

.doc-section {
  padding: 48px 0 72px;
}

.doc-section h2 {
  font-size: 1.45rem;
  margin: 36px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  color: var(--accent);
}

.doc-section h3 {
  font-size: 1.08rem;
  margin: 22px 0 6px;
  color: var(--text);
}

.doc-section p {
  color: var(--text-muted);
  margin-bottom: 12px;
}

.doc-section ul, .doc-section ol {
  margin: 8px 0 16px 22px;
  color: var(--text-muted);
}

.doc-section li {
  margin-bottom: 6px;
}

footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
}