/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  background: #F7F9FC;
  color: #2D3748;
  line-height: 1.6;
  min-height: 100vh;
}
a { color: #2C5F8A; text-decoration: none; }
a:hover { color: #1B3A5C; }

/* ===== Header ===== */
.site-header {
  background: #1B3A5C;
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(15,39,68,0.15);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #FFFFFF;
}
.logo-icon {
  width: 34px; height: 34px;
  background: rgba(255,255,255,0.15);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 800;
}
.logo h1{ font-size:22px;font-weight:500;}
.header-nav { display: flex; gap: 24px; }
.header-nav a {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}
.header-nav a:hover, .header-nav a.active { color: #FFFFFF; }

/* ===== Breadcrumb ===== */
.breadcrumb { max-width: 1200px; margin: 0 auto; padding: 16px 20px; font-size: 13px; color: #718096; }
.breadcrumb a { color: #2C5F8A; }
.breadcrumb .sep { margin: 0 6px; color: #CBD5E0; }

/* ===== Footer ===== */
.site-footer {
  background: #0F2744;
  color: rgba(255,255,255,0.5);
  padding: 30px 20px;
  text-align: center;
  font-size: 13px;
  line-height: 1.8;
}
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-links { margin-bottom: 12px; }
.footer-links a { color: rgba(255,255,255,0.7); margin: 0 12px; }
.footer-links a:hover { color: #FFFFFF; }

/* ===== Responsive (Common) ===== */
@media (max-width: 768px) {
  .header-nav { display: none; }
}
 
/* ===== Animations ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeIn 0.3s ease forwards; }