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

:root {
  --black: #111;
  --white: #fff;
  --gray: #666;
  --light-gray: #f5f5f5;
  --border: #e0e0e0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  line-height: 1.6;
  color: var(--black);
  background: var(--white);
}

/* Header */
header {
  border-bottom: 1px solid var(--border);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--black);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
}

.logo img {
  height: 32px;
  width: auto;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

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

nav a:hover,
nav a.active {
  color: var(--black);
}

/* Main content */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

/* Hero */
.hero {
  text-align: center;
  padding: 6rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4rem;
}

.hero h1 {
  font-size: 7rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.tagline {
  font-size: 1.25rem;
  color: var(--gray);
}

/* Intro */
.intro {
  max-width: 700px;
  margin: 0 auto 4rem;
  text-align: center;
}

.intro p {
  font-size: 1.1rem;
  color: var(--gray);
  margin-bottom: 1rem;
}

/* Services */
.services-preview {
  padding: 4rem 0;
}

.services-preview h2 {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  text-align: center;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.service-card {
  padding: 2rem;
  border: 1px solid var(--border);
}

.service-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--gray);
  font-size: 0.95rem;
}

/* Page */
.page {
  max-width: 700px;
  margin: 0 auto;
}

.page h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
}

.page h2 {
  font-size: 1.5rem;
  margin: 2rem 0 1rem;
}

.page p {
  margin-bottom: 1rem;
  color: var(--gray);
}

.page ul {
  margin: 1rem 0 1rem 1.5rem;
  color: var(--gray);
}

.page li {
  margin-bottom: 0.5rem;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  margin-top: 4rem;
}

footer p {
  color: var(--gray);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
  nav {
    flex-direction: column;
    gap: 1rem;
  }

  nav ul {
    gap: 1rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  main {
    padding: 2rem 1.5rem;
  }
}