:root {
  --bg: #050816;
  --card-bg: #0b1020;
  --accent: #4fb3ff;
  --accent-soft: #223a57;
  --text: #f5f5f7;
  --muted: #a0a4b8;
  --border: #20263a;
  --danger: #ff6b6b;
  --radius-lg: 16px;
  --radius-md: 10px;
  --shadow-soft: 0 18px 38px rgba(0, 0, 0, 0.4);
}

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

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #101935, #050816);
  color: var(--text);
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  background: linear-gradient(to bottom, rgba(5, 8, 22, 0.95), rgba(5, 8, 22, 0.85));
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  text-decoration: none;
}

.brand-logo-img {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

.logo-text {
  display: flex;
  flex-direction: column;
  font-size: 0.95rem;
}

.logo-sub {
  font-size: 0.75rem;
  color: var(--muted);
}

.nav {
  display: flex;
  gap: 1.2rem;
  align-items: center;
}

.nav a {
  font-size: 0.9rem;
  color: var(--muted);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.55rem 1.2rem;
  border: 1px solid var(--accent);
  background: radial-gradient(circle at top left, var(--accent), var(--accent-soft));
  color: #050816;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4);
}

.btn.small {
  padding: 0.4rem 0.9rem;
  font-size: 0.8rem;
}

.btn.primary {
  margin-top: 1rem;
}

.btn:hover {
  filter: brightness(1.05);
  text-decoration: none;
}

.page {
  padding: 2.5rem 0 3.5rem;
}

.hero {
  background: radial-gradient(circle at top left, #182544, #060a18);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  padding: 2.2rem 2rem;
  margin: 0 0 2rem;
}

.hero h1 {
  font-size: 2rem;
  margin: 0 0 0.5rem;
}

.hero-subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 32rem;
}

.content {
  background: rgba(5, 8, 22, 0.8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-soft);
}

.content h2 {
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.content ul {
  padding-left: 1.2rem;
}

.content li {
  margin-bottom: 0.4rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-inner {
  text-align: center;
}

.footer-sub {
  margin-top: 0.4rem;
  color: var(--muted);
  opacity: 0.8;
}

@media (max-width: 720px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .nav {
    flex-wrap: wrap;
    gap: 0.6rem;
  }

  .hero {
    padding: 1.6rem 1.3rem;
  }

  .page {
    padding-top: 1.5rem;
  }
}