:root {
  --primary: #0f766e;
  --accent: #67c8c1;
  --bg: #f8fcfc;
  --text-dark: #2d3748;
  --text-light: #a0aec0;
  --border: #cbd5e0;
  --footer-bg: #0d1f26;
  --white: #ffffff;
  --container-max: 960px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; line-height: 1.6; color: var(--text-dark); background: var(--bg); }

/* Container */
.container { max-width: var(--container-max); margin: 0 auto; }

/* Navbar */
.navbar { position: fixed; top: 0; width: 100%; background: var(--white); padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; z-index: 100; box-shadow: 0 2px 8px rgba(0,0,0,.05); }
.logo { font-size: 1.4rem; font-weight: 700; color: var(--primary); text-decoration: none; }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a { color: var(--text-dark); text-decoration: none; font-weight: 500; position: relative; }
.nav-links a.active::after, .nav-links a:hover::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 100%; height: 3px; background: var(--primary); }
.btn { display: inline-block; padding: 0.6rem 1.2rem; border-radius: 4px; font-weight: 500; text-decoration: none; transition: opacity .2s; }
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { opacity: 0.9; }
.btn-outline { border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--white); }

/* Hero */
.hero { min-height: 100vh; display: flex; align-items: center; padding: 8rem 2rem 4rem; }
.hero h1 { font-size: 2.8rem; margin-bottom: 1rem; }
.hero p { font-size: 1.2rem; color: var(--text-light); max-width: 600px; margin-bottom: 2rem; }
.hero .btn-group { display: flex; gap: 1rem; flex-wrap: wrap; }
.service-card { background: var(--white); border-radius: 6px; padding: 2rem; text-align: center; border: 1px solid var(--border); transition: transform .2s, box-shadow .2s; }
.service-card:hover { transform: translateY(-4px); box-shadow: 0 4px 12px rgba(0,0,0,.08); }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.cred-strip { background: var(--primary); color: var(--white); padding: 2rem; margin: 3rem 0; }
.cred-strip p { margin-bottom: 0.5rem; }
.cred-strip .acn { display: block; margin-top: 0.5rem; font-size: 0.9rem; opacity: 0.9; }
.cta-strip { background: var(--footer-bg); color: var(--white); padding: 2rem; margin-top: 3rem; }
.cta-strip .btn { display: block; width: fit-content; margin: 0 auto; }

/* Footer */
.footer { background: var(--footer-bg); color: #8892a3; padding: 4rem 2rem 2rem; margin-top: 4rem; }
.footer-col { margin-bottom: 2rem; }
.footer-col h4 { color: var(--white); margin-bottom: 1rem; font-size: 1rem; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.5rem; }
.footer-col a { color: #8892a3; text-decoration: none; font-size: 0.85rem; transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 1.5rem; margin-top: 2rem; font-size: 0.8rem; color: #5a6a7a; }
.footer-bottom p { margin-bottom: 0.5rem; }
.footer-bottom .copyright { color: #5a6a7a; }

/* Mobile */
@media (max-width: 768px) {
  .nav-links { display: none; position: absolute; top: 100%; left: 0; width: 100%; background: var(--white); padding: 1rem; box-shadow: 0 4px 12px rgba(0,0,0,.1); }
  .nav-links.active { display: block; }
  .hamburger { display: block; cursor: pointer; }
  .footer-col { text-align: center; }
  .footer-col h4 { margin: 0 auto 1rem auto; }
}