:root { --header-offset: 122px; --primary-color: #113B7A; --secondary-color: #1D5FD1; --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%); --card-bg: #10233F; --text-main: #F3F8FF; --text-secondary: #AFC4E8; --border-color: #244D84; --glow-color: #4FA8FF; --gold-color: #F2C14E; --divider-color: #1B3357; --deep-navy: #08162B; }

html { scroll-behavior: smooth; }
body { margin: 0; font-family: sans-serif; padding-top: var(--header-offset); color: var(--text-main); background-color: var(--deep-navy); overflow-x: hidden; }
body.no-scroll { overflow: hidden; }

.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(--primary-color); }

.header-top { box-sizing: border-box; min-height: 68px; height: 68px; display: flex; align-items: center; overflow: hidden; background-color: var(--deep-navy); width: 100%; }
.header-container { box-sizing: border-box; width: 100%; height: 100%; max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 0 20px; }

.logo { color: var(--text-main); font-size: 28px; font-weight: bold; text-decoration: none; white-space: nowrap; }
.logo img { display: block; max-height: 60px; height: auto; width: auto; max-width: 280px; object-fit: contain; }

.desktop-nav-buttons { display: flex; gap: 12px; align-items: center; }
.mobile-nav-buttons { box-sizing: border-box; display: none; min-height: 48px; background-color: var(--primary-color); padding: 0 20px; }

.main-nav { box-sizing: border-box; min-height: 52px; height: 52px; display: flex; align-items: center; overflow: hidden; background-color: var(--primary-color); width: 100%; transition: transform 0.3s ease; }
.nav-container { box-sizing: border-box; height: 100%; max-width: 1200px; margin: 0 auto; display: flex; flex-direction: row; justify-content: center; align-items: center; padding: 0 20px; }
.nav-link { color: var(--text-main); text-decoration: none; padding: 10px 15px; font-size: 16px; transition: color 0.3s ease, background-color 0.3s ease; white-space: nowrap; }
.nav-link:hover { color: var(--gold-color); background-color: rgba(255, 255, 255, 0.1); border-radius: 4px; }

.btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; border-radius: 8px; font-size: 15px; font-weight: bold; text-decoration: none; color: #fff; background: var(--button-gradient); border: none; cursor: pointer; transition: transform 0.2s ease, box-shadow 0.2s ease; white-space: nowrap; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3); }

.hamburger-menu { display: none; cursor: pointer; width: 30px; height: 24px; position: absolute; left: 20px; top: 50%; transform: translateY(-50%); z-index: 1002; flex-direction: column; justify-content: space-between; }
.hamburger-menu .bar { width: 100%; height: 3px; background-color: var(--text-main); transition: all 0.3s ease; }
.hamburger-menu.active .bar:nth-child(1) { transform: translateY(10px) rotate(45deg); }
.hamburger-menu.active .bar:nth-child(2) { opacity: 0; }
.hamburger-menu.active .bar:nth-child(3) { transform: translateY(-10px) rotate(-45deg); }

.overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.7); z-index: 999; }
.overlay.active { display: block; }

.site-footer { background-color: var(--deep-navy); color: var(--text-secondary); padding: 40px 20px 20px; font-size: 14px; }
.footer-top-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; max-width: 1200px; margin: 0 auto 30px; }
.footer-col h3 { color: var(--text-main); font-size: 18px; margin-bottom: 15px; }
.footer-col .footer-nav { list-style: none; padding: 0; margin: 0; }
.footer-col .footer-nav li { margin-bottom: 8px; }
.footer-col .footer-nav a { color: var(--text-secondary); text-decoration: none; transition: color 0.3s ease; }
.footer-col .footer-nav a:hover { color: var(--gold-color); }
.footer-logo { color: var(--text-main); font-size: 24px; font-weight: bold; text-decoration: none; display: block; margin-bottom: 15px; }
.footer-description { line-height: 1.6; color: var(--text-secondary); word-wrap: break-word; overflow-wrap: break-word; }
.footer-bottom { max-width: 1200px; margin: 0 auto; text-align: center; padding-top: 20px; border-top: 1px solid var(--divider-color); color: var(--text-secondary); }
.footer-bottom p { margin: 0; }
.footer-slot-anchor-inner { min-height: 10px; }

@media (max-width: 768px) {
  :root { --header-offset: 110px; }
  body { padding-top: var(--header-offset); }
  .site-header { box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2); }
  
  .header-top { min-height: 60px !important; height: 60px !important; }
  .header-container { width: 100%; max-width: none; padding: 0 15px; justify-content: space-between; position: relative; }
  
  .logo { flex: 1 !important; display: flex !important; justify-content: center !important; align-items: center !important; font-size: 24px; position: absolute; left: 50%; transform: translateX(-50%); height: 100%; max-width: calc(100% - 100px); }
  .logo img { max-height: 56px !important; }

  .desktop-nav-buttons { display: none !important; }
  .mobile-nav-buttons {
    display: flex !important;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    width: 100%; max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    background-color: var(--primary-color);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  }
  .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 {
    min-height: 48px !important;
    height: 100vh;
    width: 80%;
    max-width: 300px;
    position: fixed;
    top: 0;
    left: 0;
    transform: translateX(-100%);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    background-color: var(--deep-navy);
    padding-top: var(--header-offset);
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
    overflow-y: auto;
    z-index: 1001;
  }
  .main-nav.active { display: flex; transform: translateX(0); }
  .nav-container { width: 100%; max-width: none; flex-direction: column; align-items: flex-start; padding: 20px 15px; }
  .nav-link { width: 100%; padding: 12px 15px; border-bottom: 1px solid var(--divider-color); font-size: 16px; }
  .nav-link:last-child { border-bottom: none; }

  .hamburger-menu { display: flex; }

  .footer-top-grid { grid-template-columns: 1fr; gap: 20px; }
  .footer-bottom { padding: 15px 0; }

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