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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: #1a1a2e;
  background: #ffffff;
}

a { color: #2563eb; text-underline-offset: 3px; }
a:hover { color: #1d4ed8; }

header {
  border-bottom: 1px solid #e5e7eb;
  padding: 0 1.5rem;
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.site-name {
  font-weight: 600;
  font-size: 1rem;
  color: #1a1a2e;
  text-decoration: none;
  letter-spacing: -0.01em;
}
.site-name:hover { color: #2563eb; }

nav { display: flex; gap: 1.75rem; }

nav a {
  font-size: 0.9rem;
  color: #6b7280;
  text-decoration: none;
  transition: color 0.15s;
}
nav a:hover { color: #1a1a2e; }
nav a.active { color: #1a1a2e; font-weight: 500; }

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

.hero {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid #e5e7eb;
  margin-bottom: 3rem;
}

.hero h1 {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: #111827;
  margin-bottom: 1.25rem;
  max-width: 640px;
}

.hero p {
  font-size: 1.1rem;
  color: #4b5563;
  max-width: 560px;
  margin-bottom: 2rem;
}

.hero .cta {
  display: inline-flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.4rem;
  border-radius: 6px;
  font-size: 0.95rem;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.15s;
}

.btn-primary {
  background: #2563eb;
  color: #fff;
}
.btn-primary:hover { background: #1d4ed8; color: #fff; }

.btn-secondary {
  background: transparent;
  color: #374151;
  border: 1px solid #d1d5db;
}
.btn-secondary:hover { border-color: #9ca3af; color: #111827; }

h1 { font-size: 2rem; font-weight: 700; letter-spacing: -0.02em; color: #111827; margin-bottom: 1.5rem; }
h2 { font-size: 1.25rem; font-weight: 600; color: #111827; margin-top: 2.5rem; margin-bottom: 0.75rem; }
h3 { font-size: 1rem; font-weight: 600; color: #374151; margin-top: 1.5rem; margin-bottom: 0.5rem; }

p { margin-top: 0.75rem; color: #374151; }
p:first-child { margin-top: 0; }

ul, ol { margin-top: 0.75rem; padding-left: 1.5rem; color: #374151; }
li { margin-top: 0.4rem; }

hr { border: none; border-top: 1px solid #e5e7eb; margin: 2.5rem 0; }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.service-card {
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 1.5rem;
}

.service-card h2 {
  font-size: 1rem;
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.service-card p {
  font-size: 0.9rem;
  color: #6b7280;
  margin-top: 0;
}

.contact-block {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 2rem;
  margin-top: 2rem;
  max-width: 500px;
}

footer {
  border-top: 1px solid #e5e7eb;
  padding: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: #9ca3af;
}

@media (max-width: 640px) {
  .hero h1 { font-size: 1.75rem; }
  nav { gap: 1.25rem; }
}