:root { --header-offset: 122px; --header-offset-mobile: 110px; }
  body { padding-top: var(--header-offset); margin: 0; background-color: #0A0A0A; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
  .site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; box-shadow: 0 4px 20px rgba(0, 0, 0, 0.7); min-height: auto; }
  .header-top { background: linear-gradient(180deg, #1a1a1a 0%, #0A0A0A 100%); color: #FFF6D6; width: 100%; border-bottom: 1px solid #3A2A12; }
  .header-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 0 30px; min-height: 68px; }
  .logo { font-size: 32px; font-weight: 900; color: #FFD36B; text-decoration: none; letter-spacing: 2px; text-shadow: 0 0 10px rgba(255, 211, 107, 0.5), 0 0 20px rgba(255, 211, 107, 0.3); transition: all 0.3s ease; }
  .logo:hover { text-shadow: 0 0 15px rgba(255, 211, 107, 0.8), 0 0 30px rgba(255, 211, 107, 0.5); }
  .desktop-nav-buttons { display: flex; gap: 12px; align-items: center; }
  .btn { display: inline-block; padding: 12px 28px; font-size: 16px; font-weight: 700; border-radius: 50px; text-decoration: none; transition: all 0.3s ease; text-align: center; border: none; cursor: pointer; min-width: 120px; }
  .btn-primary { background: linear-gradient(180deg, #FFD86A 0%, #DDA11D 100%); color: #111111; box-shadow: 0 4px 15px rgba(255, 216, 106, 0.3); }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(255, 216, 106, 0.5); }
  .btn-secondary { background: transparent; color: #FFD36B; border: 2px solid #FFD36B; box-shadow: 0 0 15px rgba(255, 211, 107, 0.2); }
  .btn-secondary:hover { background: rgba(255, 211, 107, 0.1); transform: translateY(-2px); box-shadow: 0 0 25px rgba(255, 211, 107, 0.4); }
  .main-nav { background: linear-gradient(180deg, #111111 0%, #1a1a1a 100%); color: #FFF6D6; width: 100%; display: flex; border-top: 1px solid #3A2A12; }
  .nav-container { max-width: 1200px; margin: 0 auto; display: flex; flex-direction: row; justify-content: center; align-items: center; padding: 0 20px; min-height: 52px; }
  .nav-link { color: #FFF6D6; text-decoration: none; font-size: 16px; font-weight: 600; padding: 12px 14px; transition: color 0.3s ease, text-shadow 0.3s ease; position: relative; line-height: 1.4; }
  .nav-link:hover { color: #FFD36B; text-shadow: 0 0 10px rgba(255, 211, 107, 0.7); }
  .nav-link::after { content: ''; position: absolute; bottom: 4px; left: 14px; right: 14px; height: 2px; background: #FFD36B; box-shadow: 0 0 8px rgba(255, 211, 107, 0.8); transform: scaleX(0); transition: transform 0.3s ease; border-radius: 2px; }
  .nav-link:hover::after { transform: scaleX(1); }
  .hamburger-menu { display: none; position: fixed; top: 1px; left: 1px; z-index: 1002; background: linear-gradient(180deg, #FFD86A 0%, #DDA11D 100%); border: none; cursor: pointer; padding: 12px; border-radius: 0; width: 48px; height: 48px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
  .hamburger-line { display: block; width: 28px; height: 3px; background-color: #111111; transition: all 0.3s ease; border-radius: 2px; }
  .hamburger-menu.active .hamburger-line:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .hamburger-menu.active .hamburger-line:nth-child(2) { opacity: 0; }
  .hamburger-menu.active .hamburger-line:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  .mobile-menu-overlay { display: none; }
  .mobile-nav-buttons { display: none; }
  .site-footer { background: linear-gradient(180deg, #0A0A0A 0%, #111111 100%); color: #FFF6D6; border-top: 2px solid #3A2A12; margin-top: 60px; }
  .footer-container { max-width: 1200px; margin: 0 auto; padding: 40px 30px 20px; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
  .footer-logo { font-size: 28px; font-weight: 900; color: #FFD36B; text-decoration: none; letter-spacing: 2px; text-shadow: 0 0 10px rgba(255, 211, 107, 0.5); display: block; margin-bottom: 15px; }
  .footer-description { color: #ccb; font-size: 14px; line-height: 1.6; margin: 0 0 15px; }
  .footer-contact { color: #ccb; font-size: 14px; line-height: 1.5; }
  .footer-heading { color: #FFD36B; font-size: 16px; font-weight: 700; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 1px; }
  .footer-nav { list-style: none; padding: 0; margin: 0; }
  .footer-nav li { margin-bottom: 12px; }
  .footer-nav a { color: #FFF6D6; text-decoration: none; font-size: 14px; transition: color 0.3s ease, padding-left 0.3s ease; line-height: 1.4; }
  .footer-nav a:hover { color: #FFD36B; padding-left: 5px; text-shadow: 0 0 10px rgba(255, 211, 107, 0.5); }
  .footer-bottom { border-top: 1px solid #3A2A12; padding-top: 20px; margin-top: 30px; }
  .footer-bottom-container { max-width: 1200px; margin: 0 auto; text-align: center; padding: 0 30px; }
  .copyright-text { color: #ccb; font-size: 14px; margin: 0; }
  @media (max-width: 768px) {
    :root { --header-offset: 146px; }
    body { padding-top: var(--header-offset); }
    .header-top { background: linear-gradient(180deg, #1a1a1a 0%, #0A0A0A 100%); }
    .header-container { width: 100%; max-width: none; padding: 0 15px; height: 60px; min-height: 60px; display: flex; justify-content: center; align-items: center; position: relative; }
    .logo { font-size: 26px; display: block; text-align: center; margin: 0 auto; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); }
    .desktop-nav-buttons { display: none; }
    .main-nav { position: fixed; top: 0; left: 0; transform: translateX(-100%); transition: transform 0.3s ease; z-index: 1001; background: #0A0A0A; width: 260px; max-width: 80%; height: 100vh; display: flex; flex-direction: column; justify-content: flex-start; align-items: stretch; border-top: none; border-right: 2px solid #3A2A12; box-shadow: none; overflow-y: auto; }
    .main-nav.active { display: flex; transform: translateX(0); box-shadow: 4px 0 15px rgba(0, 0, 0, 0.5); }
    .nav-container { display: flex; flex-direction: column; justify-content: flex-start; align-items: stretch; padding: 70px 0 20px 0; max-width: none; width: 100%; }
    .nav-link { padding: 12px 20px; font-size: 16px; border-bottom: 1px solid rgba(58, 42, 18, 0.6); color: #FFF6D6; display: block; text-decoration: none; }
    .nav-link:hover { background-color: #111111; color: #FFD36B; padding-left: 25px; }
    .nav-link::after { display: none; }
    .hamburger-menu { display: flex; }
    .hamburger-menu.active { top: 1px; left: 1px; }
    .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: 1000; opacity: 0; transition: opacity 0.3s ease; cursor: pointer; }
    .mobile-menu-overlay.active { display: block; opacity: 1; }
    .mobile-nav-buttons { display: flex; flex-direction: column; width: 100%; padding: 8px 15px; background-color: #0A0A0A; gap: 8px; border-bottom: none; box-sizing: border-box; margin: 0; }
    .mobile-nav-buttons .btn { padding: 8px 20px; font-size: 15px; min-width: 0; width: 100%; }
    .site-footer { margin-top: 40px; }
    .footer-container { grid-template-columns: 1fr; padding: 30px 15px 20px; gap: 30px; }
    .footer-heading { margin-bottom: 15px; font-size: 15px; }
    .footer-description, .footer-contact { font-size: 13px; }
    .footer-nav li { margin-bottom: 10px; }
    .footer-nav a { font-size: 13px; }
    .footer-bottom-container { padding: 0 15px; }
    .copyright-text { font-size: 12px; }
    .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;
}