:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --text: #e8eef5;
  --muted: #9aa8b8;
  --accent: #3b9eff;
  --accent-hover: #5eb0ff;
  --radius: 12px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  background: linear-gradient(165deg, var(--bg) 0%, #15202b 45%, var(--bg) 100%);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.wrap {
  width: min(960px, 92vw);
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.75rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo {
  border-radius: 12px;
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.hero {
  text-align: center;
  padding: 3rem 0 2.5rem;
}

.hero-icon {
  border-radius: 28px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
  margin-bottom: 1.25rem;
}

h1 {
  font-size: clamp(1.85rem, 5vw, 2.75rem);
  margin: 0 0 0.75rem;
  line-height: 1.15;
}

.lead {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 36rem;
  margin: 0 auto 1.75rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.note {
  font-size: 0.9rem;
  color: var(--muted);
  min-height: 1.25rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  padding: 1rem 0 3rem;
}

.features article {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.features h2 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.features p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer {
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.5rem 0 2rem;
}

.footer-inner nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 0.75rem;
}

.footer-inner a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}

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

.copy {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0;
}