:root {
  --color-primary: #0a2540;
  --color-primary-light: #143d5e;
  --color-accent: #0066cc;
  --color-text: #1a1a1a;
  --color-text-secondary: #4a4a4a;
  --color-bg: #ffffff;
  --color-bg-alt: #f6f9fc;
  --color-border: #e3e8ee;
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --max-width: 1200px;
  --radius: 6px;
  --shadow: 0 4px 24px rgba(10, 37, 64, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.logo:hover {
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: 0.3s;
}

/* Hero */
.hero {
  padding: 160px 0 120px;
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
  max-width: 900px;
  margin: 0 auto 24px;
}

.hero-subtitle {
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--color-primary-light);
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: #0052a3;
  box-shadow: var(--shadow);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: #fff;
}

/* Sections */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 64px;
}

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
}

.intro {
  background: var(--color-bg);
}

.intro-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.1rem;
  color: var(--color-text-secondary);
}

.intro-content p + p {
  margin-top: 24px;
}

/* Services */
.services {
  background: var(--color-bg-alt);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.service-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Why */
.why {
  background: var(--color-bg);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 40px;
}

.why-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.why-item p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

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

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.contact-info address {
  font-style: normal;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.contact-info p {
  margin-bottom: 8px;
  color: var(--color-text-secondary);
}

.contact-form {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.2s, box-shadow 0.2s;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-note {
  font-size: 0.875rem;
  margin-top: 12px;
  color: var(--color-text-secondary);
}

/* Footer */
.footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 32px;
  font-size: 0.95rem;
}

.footer a {
  color: rgba(255, 255, 255, 0.9);
}

.footer a:hover {
  color: #fff;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-brand p {
  margin-bottom: 8px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 24px;
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
}

/* Legal pages */
.legal-page {
  padding: 140px 0 80px;
}

.legal-page .container {
  max-width: 800px;
}

.legal-page h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.legal-page h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 40px 0 16px;
}

.legal-page p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.legal-page ul {
  margin-left: 24px;
  margin-bottom: 16px;
  color: var(--color-text-secondary);
}

.legal-page li {
  margin-bottom: 8px;
}

/* Responsive */
@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    transform: translateY(-150%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s, opacity 0.3s;
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 140px 0 80px;
  }

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

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .section {
    padding: 72px 0;
  }

  .section-header h2 {
    font-size: 1.75rem;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    gap: 24px;
  }
}