:root { --header-offset: 164px; --primary: #113B7A; --secondary: #1D5FD1; --btn-bg: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%); --card-bg: #10233F; --text-main: #F3F8FF; --text-secondary: #AFC4E8; --border: #244D84; --glow: #4FA8FF; --gold: #F2C14E; --divider: #1B3357; --deep-navy: #08162B; }
body { margin: 0; padding-top: var(--header-offset); font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(--deep-navy); }
.site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4); background: var(--deep-navy); }
.header-top { background-color: var(--primary); width: 100%; }
.header-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 10px 24px; min-height: 48px; }
.logo { display: block; color: var(--text-main); font-size: 26px; font-weight: 800; text-decoration: none; letter-spacing: 0.5px; text-transform: uppercase; }
.logo:hover { color: var(--gold); text-shadow: 0 0 8px var(--glow); }
.logo .logo-highlight { color: var(--gold); }
.desktop-nav-buttons { display: flex; gap: 12px; }
.desktop-nav-buttons .btn, .mobile-nav-buttons .btn { display: inline-block; padding: 10px 22px; border-radius: 6px; color: #fff; font-weight: 700; text-decoration: none; background: var(--btn-bg); border: 1px solid var(--border); box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3); transition: all 0.3s ease; white-space: nowrap; text-align: center; }
.desktop-nav-buttons .btn:hover, .mobile-nav-buttons .btn:hover { box-shadow: 0 0 12px var(--glow); border-color: var(--glow); transform: translateY(-1px); }
.desktop-nav-buttons .btn-login { background: linear-gradient(180deg, #F2C14E 0%, #D49B2F 100%); border-color: #D49B2F; }
.main-nav { background-color: var(--deep-navy); width: 100%; display: flex; justify-content: center; border-bottom: 1px solid var(--border); }
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; flex-direction: row; justify-content: center; align-items: center; padding: 8px 20px; gap: 4px; flex-wrap: wrap; }
.nav-link { display: inline-block; padding: 8px 12px; color: var(--text-secondary); text-decoration: none; font-weight: 500; font-size: 16px; border-radius: 4px; transition: all 0.3s ease; white-space: nowrap; }
.nav-link:hover { color: var(--gold); background-color: rgba(242, 193, 78, 0.1); }
.nav-link.active { color: var(--gold); border-bottom: 2px solid var(--gold); }
.hamburger-menu { display: none; }
.mobile-menu-overlay { display: none; }
.mobile-nav-buttons { display: none; }
.page-content { max-width: 1200px; margin: 0 auto; padding: 10px 20px 30px; }
@media (max-width: 768px) {
  :root { --header-offset: 146px; }
  .page-content { padding: 10px 12px 20px; overflow-x: hidden; max-width: 100%; }
  .page-content img { max-width: 100% !important; height: auto !important; display: block; }
  body { overflow-x: hidden; }
  .site-header { background: var(--deep-navy); }
  .header-top { background-color: var(--primary); order: 1; }
  .header-container { width: 100%; max-width: none; padding: 8px 15px; min-height: 44px; }
  .logo { font-size: 20px; flex: 1; text-align: center; display: block; }
  .desktop-nav-buttons { display: none; }
  .mobile-nav-buttons { display: flex; justify-content: center; gap: 10px; padding: 8px 12px; background-color: var(--primary); border-top: 1px solid var(--border); order: 2; width: 100%; box-sizing: border-box; }
  .mobile-nav-buttons .btn { flex: 1; padding: 10px 12px; font-size: 14px; }
  .main-nav { display: none; flex-direction: column; position: fixed; top: 0; left: 0; width: 280px; height: 100%; background-color: var(--deep-navy); z-index: 1002; box-shadow: 2px 0 16px rgba(0, 0, 0, 0.6); transform: translateX(-100%); transition: transform 0.3s ease; padding-top: 70px; overflow-y: auto; }
  .main-nav.active { display: flex; transform: translateX(0); }
  .nav-container { width: 100%; max-width: none; flex-direction: column; align-items: flex-start; padding: 0; gap: 0; }
  .nav-link { width: 100%; padding: 14px 20px; border-bottom: 1px solid var(--divider); text-align: left; }
  .nav-link.active { border-bottom: 1px solid var(--divider); border-left: 4px solid var(--gold); background-color: rgba(242, 193, 78, 0.08); }
  .hamburger-menu { display: flex; flex-direction: column; justify-content: center; align-items: center; width: 40px; height: 40px; cursor: pointer; background: transparent; border: none; position: fixed; top: 10px; left: 10px; z-index: 1003; padding: 8px; }
  .hamburger-menu .bar { width: 24px; height: 2px; background-color: var(--gold); margin: 3px 0; transition: all 0.3s ease; }
  .hamburger-menu.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .hamburger-menu.active .bar:nth-child(2) { opacity: 0; }
  .hamburger-menu.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  .mobile-menu-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.6); z-index: 1001; }
  .mobile-menu-overlay.active { display: block; }
  body.no-scroll { overflow: hidden; }
}
.site-footer { background-color: var(--deep-navy); color: var(--text-main); padding-top: 40px; border-top: 1px solid var(--border); }
.footer-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; }
.footer-about .footer-logo { font-size: 22px; font-weight: 700; color: var(--text-main); text-decoration: none; }
.footer-about .footer-logo:hover { color: var(--gold); }
.footer-desc { font-size: 14px; line-height: 1.6; color: var(--text-secondary); margin-top: 12px; }
.footer-col h4 { font-size: 16px; font-weight: 700; color: var(--text-main); margin-bottom: 10px; text-transform: uppercase; }
.footer-nav { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.footer-nav li a { color: var(--text-secondary); text-decoration: none; font-size: 14px; transition: color 0.3s ease; padding: 2px 0; }
.footer-nav li a:hover { color: var(--gold); }
.footer-contact-info .footer-note { font-size: 14px; color: var(--text-secondary); margin: 8px 0; padding-left: 8px; border-left: 2px solid var(--primary); }
.footer-divider { border: none; border-top: 1px solid var(--divider); margin: 20px 0; }
.copyright { font-size: 14px; color: var(--text-secondary); text-align: center; margin: 0; padding-bottom: 8px; }
.disclaimer { font-size: 12px; color: var(--text-secondary); text-align: center; margin: 0; padding-bottom: 16px; }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-container { padding: 0 16px; }
  .site-footer { padding-top: 24px; }
}
/* 移动端内容区防溢出（系统追加，请勿删除） */
@media (max-width: 768px) {
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}
/* 内容保护（系统追加，请勿删除） */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
input, textarea, select, [contenteditable="true"] {
  -webkit-user-select: text;
  -moz-user-select: text;
  user-select: text;
}