.site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; box-shadow: 0 2px 15px rgba(0, 0, 0, 0.15); background: #017439; min-height: auto; }
.header-top { background: #017439; width: 100%; border-bottom: 2px solid rgba(255, 255, 255, 0.1); }
.header-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 12px 30px; position: relative; }
.logo { display: inline-block; font-size: 30px; font-weight: 800; color: #FFFFFF; text-decoration: none; text-transform: uppercase; letter-spacing: 1.5px; background: linear-gradient(135deg, #FFD700 0%, #FFFFFF 50%, #FFD700 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.desktop-nav-buttons { display: flex; gap: 12px; align-items: center; }
.btn { display: inline-block; padding: 10px 24px; border-radius: 30px; font-size: 14px; font-weight: 700; text-align: center; cursor: pointer; border: 2px solid transparent; transition: all 0.3s ease; text-decoration: none; }
.btn-login { background: #C30808; color: #FFFF00; border-color: #C30808; }
.btn-login:hover { background: transparent; color: #FFFFFF; border-color: #FFFF00; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(195, 8, 8, 0.4); }
.btn-register { background: #C30808; color: #FFFF00; border-color: #FFFF00; box-shadow: 0 0 15px rgba(255, 255, 0, 0.3); }
.btn-register:hover { background: #FFFFFF; color: #C30808; border-color: #C30808; transform: translateY(-2px); box-shadow: 0 0 25px rgba(255, 255, 0, 0.5); }
.main-nav { background: #026030; width: 100%; display: flex; align-items: center; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.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; gap: 5px; flex-wrap: wrap; }
.nav-link { position: relative; display: block; padding: 12px 15px; color: #FFFFFF; font-size: 14px; font-weight: 600; text-decoration: none; transition: color 0.3s ease, background 0.3s ease; border-radius: 4px; }
.nav-link:hover, .nav-link.active { color: #FFD700; background: rgba(255, 255, 255, 0.1); }
.mobile-nav-buttons { display: none; }
.hamburger-menu { display: none; }
.mobile-menu-overlay { display: none; }
site-footer { background: #026030; color: #FFFFFF; width: 100%; }
.site-footer { background: #023a1e; color: #FFFFFF; padding: 50px 0 0; width: 100%; font-size: 14px; line-height: 1.7; }
.footer-container { max-width: 1200px; margin: 0 auto; padding: 0 30px; display: grid; grid-template-columns: 1.5fr 1fr 1fr 0.8fr; gap: 30px; padding-bottom: 40px; }
.footer-logo { display: inline-block; font-size: 28px; font-weight: 800; color: #FFFFFF; text-decoration: none; margin-bottom: 15px; }
.footer-description { color: #a8c5b2; font-size: 13px; line-height: 1.7; }
.footer-heading { position: relative; color: #FFFFFF; font-size: 16px; font-weight: 700; margin-bottom: 20px; padding-bottom: 10px; }
.footer-heading::after { content: ''; position: absolute; left: 0; bottom: 0; width: 30px; height: 2px; background: #FFD700; }
.footer-nav { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a { color: #a8c5b2; text-decoration: none; transition: color 0.3s ease, padding-left 0.3s ease; }
.footer-nav a:hover { color: #FFD700; padding-left: 5px; }
.footer-license { color: #a8c5b2; font-size: 13px; margin-bottom: 10px; }
.footer-bottom { background: #022e15; border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 16px 0; text-align: center; }
.copyright { color: #a8c5b2; font-size: 13px; margin: 0; }
:root { --header-offset: 122px; }
body { padding-top: var(--header-offset); margin: 0; background-color: #FFFFFF; }
@media (max-width: 768px) {
  :root { --header-offset: 110px; }
  .header-container { width: 100%; max-width: none; padding: 10px 15px; }
  .nav-container { width: 100%; max-width: none; padding: 10px 15px; }
  .site-header { min-height: auto; }
  .header-top { min-height: 60px; }
  .header-container { min-height: 60px; }
  .logo { font-size: 24px; }
  .desktop-nav-buttons { display: none; }
  .main-nav { display: none; position: fixed; top: 0; left: 0; width: 280px; height: 100%; background: #017439; flex-direction: column; justify-content: flex-start; transform: translateX(-100%); transition: transform 0.3s ease; z-index: 1002; overflow-y: auto; padding-top: 70px; border-right: 1px solid rgba(255, 255, 255, 0.1); }
  .main-nav.active { display: flex; transform: translateX(0); }
  .nav-container { flex-direction: column; align-items: stretch; gap: 0; padding: 0; max-height: calc(100vh - 130px); overflow-y: auto; }
  .nav-link { display: block; padding: 15px 30px; color: #FFFFFF; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
  .nav-link:hover { background: rgba(255, 255, 255, 0.1); color: #FFD700; }
  .mobile-nav-buttons { display: flex; gap: 10px; justify-content: center; background: #02a84f; padding: 10px 15px; border-top: 1px solid rgba(255, 255, 255, 0.3); position: relative; z-index: 998; }
  .mobile-nav-buttons .btn { flex: 1; max-width: 140px; padding: 10px 15px; font-size: 13px; }
  .hamburger-menu { display: block; position: absolute; left: 15px; top: 22px; z-index: 1001; background: transparent; border: none; cursor: pointer; width: 32px; height: 24px; padding: 0; }
  .hamburger-menu span { display: block; width: 100%; height: 2px; background: #FFFF00; margin: 5px 0; transition: all 0.3s ease; }
  .hamburger-menu.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .hamburger-menu.active span:nth-child(2) { opacity: 0; }
  .hamburger-menu.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
  .mobile-menu-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.6); z-index: 999; }
  .mobile-menu-overlay.active { display: block; }
  .site-footer { padding-top: 40px; }
  .footer-container { grid-template-columns: 1fr 1fr; padding: 0 20px 30px; gap: 25px; }
  .footer-column:first-child { grid-column: 1 / -1; }
  .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;
}