:root { --header-offset: 122px; --primary-color: #113B7A; --secondary-color: #1D5FD1; --text-main: #F3F8FF; --text-secondary: #AFC4E8; --card-bg: #10233F; --border-color: #244D84; --btn-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%); --glow-color: #4FA8FF; --gold-color: #F2C14E; --divider-color: #1B3357; --deep-navy: #08162B; }
body { margin: 0; font-family: 'Arial', sans-serif; color: var(--text-main); background-color: var(--deep-navy); padding-top: var(--header-offset); overflow-x: hidden; }

/* Shared Container Styles */
.header-container, .nav-container, .footer-top-grid { max-width: 1200px; margin: 0 auto; padding: 0 20px; box-sizing: border-box; }

/* Site Header */
.site-header { position: fixed; top: 0; left: 0; right: 0; width: 100%; z-index: 1000; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2); background-color: var(--deep-navy); }

/* Header Top */
.header-top { background-color: var(--deep-navy); height: 68px; display: flex; align-items: center; overflow: hidden; box-sizing: border-box; }
.header-container { height: 100%; display: flex; justify-content: space-between; align-items: center; }
.logo, .footer-logo { display: block; text-decoration: none; font-size: 24px; font-weight: bold; color: var(--text-main); line-height: 1; }
.logo img, .footer-logo img { display: block; max-height: 60px; height: auto; width: auto; max-width: 280px; object-fit: contain; }

/* Buttons */
.desktop-nav-buttons { display: flex; gap: 12px; align-items: center; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; border-radius: 5px; text-decoration: none; font-weight: bold; cursor: pointer; transition: background-color 0.3s ease, box-shadow 0.3s ease; white-space: nowrap; box-sizing: border-box; }
.btn-primary { background: var(--btn-gradient); color: var(--text-main); border: none; box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2); }
.btn-primary:hover { opacity: 0.9; box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3); }
.btn-secondary { background-color: var(--secondary-color); color: var(--text-main); border: none; box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2); }
.btn-secondary:hover { opacity: 0.9; box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3); }

/* Mobile Nav Buttons (Desktop Hidden) */
.mobile-nav-buttons { display: none; box-sizing: border-box; min-height: 48px; background-color: var(--primary-color); padding: 0 20px; }

/* Main Navigation */
.main-nav { background-color: var(--primary-color); height: 52px; display: flex; align-items: center; overflow: hidden; box-sizing: border-box; }
.nav-container { height: 100%; display: flex; justify-content: center; align-items: center; }
.nav-list { list-style: none; margin: 0; padding: 0; display: flex; gap: 25px; }
.nav-list li a { text-decoration: none; color: var(--text-main); font-weight: 500; padding: 10px 0; transition: color 0.3s ease; white-space: nowrap; }
.nav-list li a:hover, .nav-list li a.active { color: var(--gold-color); }

/* Hamburger Menu (Desktop Hidden) */
.hamburger-menu { display: none; background: none; border: none; cursor: pointer; padding: 0; width: 30px; height: 24px; position: relative; z-index: 1001; }
.hamburger-menu span { display: block; width: 100%; height: 3px; background-color: var(--text-main); margin-bottom: 5px; transition: transform 0.3s ease, opacity 0.3s ease; }
.hamburger-menu span:last-child { margin-bottom: 0; }

/* Mobile Menu Overlay */
.mobile-menu-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background-color: rgba(0, 0, 0, 0.7); z-index: 999; }
.mobile-menu-overlay.active { display: block; }

/* Footer */
.site-footer { background-color: var(--card-bg); padding: 40px 0 20px; color: var(--text-secondary); font-size: 14px; }
.footer-top-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 30px; }
.footer-col { padding: 10px 0; }
.footer-about .footer-logo img { max-height: 50px; }
.footer-description { margin-top: 15px; line-height: 1.6; overflow-wrap: break-word; word-wrap: break-word; }
.footer-heading { color: var(--text-main); font-size: 16px; margin-bottom: 15px; }
.footer-nav { list-style: none; margin: 0; padding: 0; }
.footer-nav li { margin-bottom: 8px; }
.footer-nav li a { text-decoration: none; color: var(--text-secondary); transition: color 0.3s ease; }
.footer-nav li a:hover { color: var(--gold-color); }
.footer-bottom { border-top: 1px solid var(--divider-color); padding-top: 20px; text-align: center; color: var(--text-secondary); margin-top: 30px; }
.footer-bottom p { margin: 0; }
.footer-slot-anchor-inner { min-height: 1px; }

/* Responsive Styles */
@media (max-width: 768px) {
  :root { --header-offset: 110px; }
  body { padding-top: var(--header-offset); overflow-x: hidden; }

  .page-content img { max-width: 100% !important; height: auto !important; display: block; }
  .page-content { overflow-x: hidden; max-width: 100%; }

  .header-top { height: 60px !important; padding: 0 15px; }
  .header-container { width: 100%; max-width: none; padding: 0; position: relative; }

  .hamburger-menu { display: block; position: absolute; left: 0; top: 50%; transform: translateY(-50%); }
  .hamburger-menu.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .hamburger-menu.active span:nth-child(2) { opacity: 0; }
  .hamburger-menu.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

  .logo { flex: 1 !important; display: flex !important; justify-content: center !important; align-items: center !important; max-width: calc(100% - 100px); /* Account for hamburger */ }
  .logo img { max-height: 56px !important; }

  .desktop-nav-buttons { display: none !important; }
  .mobile-nav-buttons { display: flex !important; min-height: 48px; align-items: center; width: 100%; max-width: 100%; box-sizing: border-box; padding-left: 15px; padding-right: 15px; overflow: hidden; gap: 10px; flex-wrap: nowrap; background-color: var(--primary-color); }
  .mobile-nav-buttons .btn { flex: 1; min-width: 0; max-width: calc(50% - 5px); box-sizing: border-box; padding: 8px 12px; font-size: 13px; white-space: normal; word-wrap: break-word; overflow-wrap: break-word; }

  .main-nav { display: none; position: fixed; top: var(--header-offset); left: 0; width: 80%; max-width: 300px; height: calc(100% - var(--header-offset)); background-color: var(--card-bg); transform: translateX(-100%); transition: transform 0.3s ease; box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3); overflow-y: auto; z-index: 1000; }
  .main-nav.active { display: block; transform: translateX(0); }
  .nav-container { width: 100%; max-width: none; padding: 20px 15px; height: auto; }
  .nav-list { flex-direction: column; gap: 15px; align-items: flex-start; }
  .nav-list li a { width: 100%; padding: 10px 0; border-bottom: 1px solid var(--divider-color); }
  .nav-list li:last-child a { border-bottom: none; }

  .footer-top-grid { grid-template-columns: 1fr; padding: 0 15px; }
  .footer-col { text-align: center; }
  .footer-about .footer-logo { margin: 0 auto; }
  .footer-heading { margin-top: 20px; }
  .footer-nav { align-items: center; display: flex; flex-direction: column; }
}
/* 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;
}