:root {
  --primary: #0a4b7a;
  --primary-light: #1a6ba8;
  --primary-dark: #062d4a;
  --accent: #e8a838;
  --accent-light: #f0c060;
  --bg: #f8fafc;
  --white: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --shadow: 0 4px 24px rgba(10,75,122,0.10);
  --radius: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', -apple-system, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; max-width: 1200px; margin: 0 auto; padding: 0 20px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 20px; font-weight: 900; color: var(--primary); text-decoration: none;
}
.logo-mark {
  width: 36px; height: 36px; background: var(--primary); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px; font-weight: 900;
}
nav a {
  margin-left: 24px; color: var(--text-light); text-decoration: none;
  font-size: 14px; font-weight: 600; transition: color .2s;
}
nav a:hover { color: var(--primary); }
.hamburger { display: none; flex-direction: column; cursor: pointer; gap: 5px; }
.hamburger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; }

/* Hero */
.hero {
  margin-top: 68px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
  color: #fff; padding: 80px 0 60px; text-align: center;
}
.hero h1 { font-size: clamp(28px, 5vw, 52px); font-weight: 900; line-height: 1.1; margin-bottom: 16px; }
.hero p { font-size: clamp(16px, 2vw, 20px); opacity: .88; max-width: 640px; margin: 0 auto 28px; }
.btn {
  display: inline-block; padding: 14px 32px; border-radius: 999px;
  font-weight: 700; font-size: 15px; text-decoration: none; cursor: pointer;
  border: 0; transition: all .2s;
}
.btn-primary { background: var(--accent); color: var(--primary-dark); }
.btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,168,56,0.3); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3); }
.btn-outline:hover { border-color: #fff; }

/* Sections */
section { padding: 72px 0; }
.section-title {
  font-size: clamp(22px, 3vw, 34px); font-weight: 900; color: var(--primary);
  text-align: center; margin-bottom: 12px;
}
.section-sub {
  text-align: center; color: var(--text-light); max-width: 600px; margin: 0 auto 48px; font-size: 16px;
}

/* Services grid */
.services-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px;
}
.service-card {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow); transition: transform .2s;
}
.service-card:hover { transform: translateY(-4px); }
.service-icon {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 16px;
}
.service-card h3 { font-size: 18px; margin-bottom: 8px; color: var(--primary); }
.service-card p { color: var(--text-light); font-size: 14px; line-height: 1.6; }

/* About */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
}
.about-grid h2 { font-size: clamp(22px, 3vw, 32px); color: var(--primary); margin-bottom: 16px; }
.about-grid p { color: var(--text-light); margin-bottom: 12px; }

/* Contact */
#contact { background: var(--white); }
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
}
.contact-info h3 { font-size: 18px; font-weight: 800; color: var(--primary); margin-bottom: 12px; }
.contact-info p { color: var(--text-light); margin-bottom: 8px; }
.contact-info strong { color: var(--text); }
form { display: flex; flex-direction: column; gap: 14px; }
input, textarea, select {
  padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px;
  font: inherit; font-size: 14px; background: var(--bg);
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(10,75,122,0.12); }
textarea { min-height: 100px; resize: vertical; }
form .btn { align-self: flex-start; }

/* Footer */
footer {
  background: var(--primary-dark); color: rgba(255,255,255,0.7); text-align: center; padding: 24px 0; font-size: 13px;
}
footer strong { color: #fff; }

/* Mobile */
@media (max-width: 768px) {
  nav { display: none; }
  .hamburger { display: flex; }
  nav.open { display: flex; flex-direction: column; position: fixed; top: 68px; left: 0; right: 0; background: var(--white); border-bottom: 1px solid var(--border); padding: 16px 20px; }
  nav.open a { margin: 8px 0; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero { padding: 60px 0 40px; }
}