:root {
  --primary: #29B6F6;
  --primary-dark: #0288D1;
  --text: #162637;
  --text-light: #4a5e73;
  --bg: #ffffff;
  --bg-alt: #f4f7fa;
  --border: #dde4ec;
  --radius: 12px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

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

a:hover {
  text-decoration: underline;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  padding: 0 24px;
}

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

.nav-logo {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

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

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text);
}

/* Hero */
.hero {
  padding: 160px 24px 100px;
  text-align: center;
  background: linear-gradient(135deg, #e8f4fd 0%, #f4f7fa 100%);
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text);
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 36px;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: background 0.2s, transform 0.2s;
}

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

/* Sections */
.section {
  padding: 80px 24px;
}

.section-alt {
  background: var(--bg-alt);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-subtitle {
  color: var(--text-light);
  font-size: 1.1rem;
  margin-bottom: 48px;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

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

.card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.card-app-icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.card p {
  color: var(--text-light);
  font-size: 0.95rem;
}

.card .btn {
  margin-top: 20px;
  font-size: 0.9rem;
  padding: 10px 24px;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.about-text p {
  color: var(--text-light);
  margin-bottom: 16px;
}

.about-visual {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.18);
}

.about-photo {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* Contact */
.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  font-size: 1.5rem;
  margin-top: 2px;
}

.contact-item h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

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

/* Footer */
.footer {
  background: #162637;
  color: #cbd5e1;
  padding: 48px 24px 24px;
}

.footer-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 36px;
}

.footer h4 {
  color: #fff;
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer p {
  font-size: 0.9rem;
  line-height: 1.8;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: #cbd5e1;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: #fff;
  text-decoration: none;
}

.footer-bottom {
  max-width: 1100px;
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid #334155;
  text-align: center;
  font-size: 0.85rem;
}

/* Legal pages */
.legal {
  padding: 120px 24px 80px;
  max-width: 800px;
  margin: 0 auto;
}

.legal h1 {
  font-size: 2rem;
  margin-bottom: 32px;
}

.legal h2 {
  font-size: 1.3rem;
  margin-top: 32px;
  margin-bottom: 12px;
}

.legal h3 {
  font-size: 1.1rem;
  margin-top: 24px;
  margin-bottom: 8px;
}

.legal p, .legal li {
  color: var(--text-light);
  margin-bottom: 12px;
}

.legal ul, .legal ol {
  padding-left: 24px;
  margin-bottom: 12px;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

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

  .hero p {
    font-size: 1rem;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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