/* Base layout */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #222;
  background-color: #ffffff;
  line-height: 1.6;
}

a {
  color: #0077cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 32px;
  border-bottom: 1px solid #e5e5e5;
  background-color: #f9fbff;
}

.logo img {
  height: 44px;
}

.main-nav a {
  margin: 0 10px;
  font-size: 0.95rem;
  font-weight: 500;
  color: #333;
}

.main-nav a:hover {
  color: #0077cc;
}

.lang-switch {
  font-size: 0.9rem;
  color: #666;
}

.lang-switch a {
  padding: 4px 6px;
}

.lang-switch .active-lang {
  font-weight: 700;
  color: #0077cc;
}

/* Hero section (home) */
#hero {
  padding: 80px 32px 40px;
  max-width: 960px;
  margin: 0 auto;
}

#hero h1 {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

#hero p {
  font-size: 1.05rem;
  max-width: 640px;
}

#hero a {
  display: inline-block;
  margin-top: 20px;
  padding: 10px 22px;
  border-radius: 4px;
  background-color: #0077cc;
  color: #ffffff;
  font-weight: 600;
}

#hero a:hover {
  background-color: #005fa3;
  text-decoration: none;
}

/* Sections */
section {
  padding: 32px;
  max-width: 960px;
  margin: 0 auto;
}

section h2 {
  margin-top: 0;
  font-size: 1.4rem;
}

/* Lists */
section ul {
  padding-left: 20px;
}

/* Footer */
footer {
  border-top: 1px solid #e5e5e5;
  padding: 16px 32px;
  font-size: 0.85rem;
  color: #666;
  text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
  .site-header {
    flex-wrap: wrap;
    padding: 12px 16px;
  }

  .main-nav {
    width: 100%;
    margin-top: 8px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
  }

  .main-nav a {
    margin: 4px 8px;
  }

  .lang-switch {
    width: 100%;
    text-align: center;
    margin-top: 6px;
  }

  #hero {
    padding: 48px 16px 24px;
  }

  section {
    padding: 24px 16px;
  }
}