@charset "UTF-8";

:root {
  --primary: #C5D5E4;
  --secondary: #4A6FA5;
  --dark: #0F172A;
  --dark-light: #1E293B;
  --text: #334155;
  --text-light: #64748B;
  --white: #FFFFFF;
  --border: #E2E8F0;
  --shadow: rgba(15, 23, 42, 0.08);
  --shadow-hover: rgba(15, 23, 42, 0.16);
  --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E3A5F 50%, #4A6FA5 100%);
  --transition: all 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

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

a:hover { color: var(--dark); }

img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: var(--transition);
  background: transparent;
}

.header.scrolled {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
}

.logo svg { width: 42px; height: 42px; }

.logo-text { font-size: 22px; font-weight: 700; letter-spacing: 1px; }

.logo-sub { font-size: 11px; opacity: 0.8; letter-spacing: 2px; text-transform: uppercase; }

.nav { display: flex; gap: 36px; list-style: none; }

.nav a {
  color: rgba(255,255,255,0.9);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}

.nav a:hover::after,
.nav a.active::after { width: 100%; }

.nav a:hover { color: var(--white); }

.nav a.active { color: var(--primary); }

/* Mobile Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  gap: 8px;
}

.btn-primary {
  background: var(--secondary);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(74,111,165,0.3);
}

.btn-primary:hover {
  background: #3D5D8C;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(74,111,165,0.4);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.4);
}

.btn-outline:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.1);
  color: var(--white);
}

.btn-sm { padding: 8px 20px; font-size: 13px; }

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(74,111,165,0.1);
  color: var(--secondary);
  font-size: 13px;
  font-weight: 500;
  border-radius: 4px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-desc {
  font-size: 16px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* Footer */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.8);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo { margin-bottom: 20px; color: var(--white); }

.footer-brand p { font-size: 14px; line-height: 1.8; opacity: 0.7; }

.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 24px;
}

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

.footer-links li { margin-bottom: 12px; }

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  transition: var(--transition);
}

.footer-links a:hover { color: var(--primary); padding-left: 4px; }

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

.footer-contact li {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 14px;
}

.footer-contact svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
  opacity: 0.7;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  opacity: 0.6;
}

.footer-bottom a { color: rgba(255,255,255,0.6); }

.footer-bottom a:hover { color: var(--primary); }

/* Breadcrumb */
.breadcrumb {
  background: var(--gradient-hero);
  padding: 120px 0 60px;
  color: var(--white);
}

.breadcrumb h1 {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 16px;
}

.breadcrumb-nav {
  display: flex;
  gap: 12px;
  font-size: 14px;
  opacity: 0.8;
}

.breadcrumb-nav a { color: rgba(255,255,255,0.8); }

.breadcrumb-nav a:hover { color: var(--primary); }

/* Page Section */
.page-section { padding: 80px 0; }

.page-section.bg-light { background: #F8FAFC; }

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }

.animate-delay-2 { animation-delay: 0.2s; }

.animate-delay-3 { animation-delay: 0.3s; }

.animate-delay-4 { animation-delay: 0.4s; }

/* Responsive */
@media (max-width: 768px) {
  .menu-toggle { display: flex; }
  .nav {
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: rgba(15,23,42,0.98);
    flex-direction: column;
    padding: 24px;
    gap: 0;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }
  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .nav li { border-bottom: 1px solid rgba(255,255,255,0.08); }
  .nav a { display: block; padding: 14px 0; }
  .section-title { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .breadcrumb h1 { font-size: 28px; }
  .container { padding: 0 16px; }
}