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

:root {
  --color-bg: #0f0f0f;
  --color-surface: #1a1a1a;
  --color-accent: #7c6af7;
  --color-text: #f0f0f0;
  --color-muted: #888;
  --radius: 8px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.site-header {
  border-bottom: 1px solid #222;
  padding: 1rem 2rem;
}

.nav {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-accent);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

/* Main */
.main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
}

.hero {
  text-align: center;
  max-width: 600px;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.btn {
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
}

.btn:hover {
  opacity: 0.85;
}

.btn:active {
  transform: scale(0.97);
}

/* About */
.about {
  background: var(--color-surface);
  border-top: 1px solid #222;
  padding: 4rem 2rem;
}

.about-inner {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.about-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--color-accent);
}

.about-text {
  font-size: 1rem;
  color: var(--color-muted);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.about-text strong {
  color: var(--color-text);
}

/* Footer */
.site-footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--color-muted);
  font-size: 0.85rem;
  border-top: 1px solid #222;
}