:root {
  --color-primary: #0f766e;
  --color-primary-dark: #0d5c56;
  --color-accent: #f59e0b;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-muted: #64748b;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  --radius: 12px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
}

.container {
  width: min(1120px, 92%);
  margin-inline: auto;
}

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid #e2e8f0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.main-nav {
  display: flex;
  gap: 1.75rem;
}

.main-nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.main-nav a:hover {
  color: var(--color-primary);
}

/* Hero */
.hero {
  padding: 6rem 0 5rem;
  text-align: center;
  background: linear-gradient(180deg, #e0f2fe 0%, var(--color-bg) 100%);
}

.hero h1 {
  font-size: clamp(2.25rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--color-muted);
  max-width: 680px;
  margin: 0 auto 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 6px 20px rgba(15, 118, 110, 0.25);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: white;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* Services */
.services {
  padding: 5rem 0;
}

.services h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2.5rem;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.2s ease;
}

.service-card:hover {
  transform: translateY(-4px);
}

.service-card h3 {
  color: var(--color-primary);
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.service-card p {
  color: var(--color-muted);
}

/* About */
.about {
  padding: 5rem 0;
  background: var(--color-surface);
}

.about-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.about h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.about p {
  color: var(--color-muted);
  margin-bottom: 1.5rem;
}

.checklist {
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.checklist li {
  position: relative;
  padding-left: 1.75rem;
  font-weight: 500;
}

.checklist li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 800;
}

.about-stat {
  text-align: center;
  background: var(--color-bg);
  padding: 2.5rem;
  border-radius: var(--radius);
}

.stat-number {
  display: block;
  font-size: 4rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  color: var(--color-muted);
  font-weight: 600;
}

/* Contact */
.contact {
  padding: 5rem 0;
}

.contact h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.contact > .container > p {
  text-align: center;
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.contact-form {
  max-width: 560px;
  margin: 0 auto;
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  gap: 1rem;
}

.contact-form label {
  font-weight: 600;
  font-size: 0.9rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font: inherit;
  color: var(--color-text);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}

.contact-form button {
  margin-top: 0.5rem;
  border: none;
}

/* Footer */
.site-footer {
  background: var(--color-text);
  color: #94a3b8;
  text-align: center;
  padding: 1.5rem 0;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .about-inner {
    grid-template-columns: 1fr;
  }

  .main-nav {
    gap: 1rem;
  }

  .hero {
    padding: 4rem 0 3.5rem;
  }
}