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

:root {
  --color-primary: #1a2a3a;
  --color-accent: #2c5f8a;
  --color-light: #f7f8fa;
  --color-text: #333;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-white: #ffffff;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--color-text);
  line-height: 1.6;
  background: var(--color-white);
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  padding: 0 2rem;
}

nav .nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

nav .logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: 0.02em;
}

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

nav .nav-links a {
  text-decoration: none;
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Hero */
.hero {
  margin-top: 64px;
  padding: 6rem 2rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: var(--color-white);
  text-align: center;
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: 0.01em;
}

.hero p {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto;
  opacity: 0.9;
  line-height: 1.7;
}

/* Sections */
section {
  padding: 5rem 2rem;
}

.section-inner {
  max-width: 900px;
  margin: 0 auto;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
  text-align: center;
}

.section-divider {
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  margin: 0 auto 2.5rem;
  border: none;
}

/* About */
.about {
  background: var(--color-light);
}

.about-text {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
  color: var(--color-muted);
  font-size: 1.05rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2rem 1.5rem;
  text-align: center;
}

.service-card .icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  background: var(--color-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-card .icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-card h3 {
  font-size: 1.05rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* Contact */
.contact {
  background: var(--color-white);
}

.contact-info {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contact-info p {
  color: var(--color-muted);
  font-size: 1.05rem;
  margin-bottom: 2rem;
}

.contact-email {
  display: inline-block;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  padding: 0.75rem 2rem;
  border: 2px solid var(--color-accent);
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}

.contact-email:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

/* Footer */
footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
  padding: 2rem;
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    padding: 4rem 1.5rem;
  }

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

  .hero p {
    font-size: 1.05rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  section {
    padding: 3.5rem 1.5rem;
  }

  nav .nav-links {
    gap: 1.25rem;
  }

  nav .nav-links a {
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  nav .nav-inner {
    padding: 0;
  }

  nav .logo {
    font-size: 1.1rem;
  }

  .hero h1 {
    font-size: 1.65rem;
  }
}