:root { --header-offset: 122px; --primary-color: #017439; --secondary-color: #FFFFFF; --btn-register-bg: #C30808; --btn-login-bg: #C30808; --btn-font-color: #FFFF00; }
body { padding-top: var(--header-offset); margin: 0; }
.site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25); font-family: Arial, sans-serif; }
.header-top { background-color: #FFFFFF; width: 100%; border-bottom: 3px solid var(--primary-color); }
.header-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding-left: 30px; padding-right: 30px; min-height: 68px; }
.logo { display: block; font-size: 38px; font-weight: 900; color: var(--primary-color); text-decoration: none; letter-spacing: 1px; line-height: 1; text-transform: lowercase; }
.logo:hover { color: var(--primary-color); opacity: 0.9; }
.desktop-nav-buttons { display: flex; gap: 12px; align-items: center; }
.btn { text-decoration: none; transition: all 0.3s ease; font-weight: 700; border-radius: 6px; display: inline-block; cursor: pointer; text-align: center; }
.desktop-nav-buttons .btn { padding: 10px 28px; font-size: 15px; }
.btn-login { background-color: var(--btn-login-bg); color: var(--btn-font-color); }
.btn-login:hover { background-color: #a30606; }
.btn-register { background-color: var(--btn-register-bg); color: var(--btn-font-color); }
.btn-register:hover { background-color: #a30606; }
.main-nav { background-color: var(--primary-color); width: 100%; display: flex; min-height: 52px; }
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; flex-direction: row; justify-content: center; align-items: center; padding: 0 20px; width: 100%; }
.nav-menu { display: flex; flex-direction: row; justify-content: center; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-menu li { margin: 0; padding: 0; }
.nav-menu a { display: block; padding: 16px 12px; color: #FFFFFF; text-decoration: none; font-size: 15px; font-weight: 600; transition: background-color 0.3s ease; white-space: nowrap; }
.nav-menu a:hover { background-color: #005c2e; color: #FFFFFF; }
.hamburger-menu { display: none; z-index: 1002; }
.mobile-menu-overlay { display: none; }
.mobile-nav-buttons { display: none; }
@media (max-width: 768px) {
:root { --header-offset: 110px; }
.header-top { min-height: 60px; }
.header-container { width: 100%; max-width: none; padding-left: 15px; padding-right: 15px; min-height: 60px; }
.nav-container { width: 100%; max-width: none; padding-left: 15px; padding-right: 15px; }
.logo { font-size: 32px; }
.desktop-nav-buttons { display: none; }
.main-nav { display: none; position: fixed; top: 60px; left: 0; width: 280px; height: 100%; transform: translateX(-100%); transition: transform 0.3s ease-in-out; flex-direction: column; background-color: var(--primary-color); overflow-y: auto; z-index: 1001; box-shadow: 2px 0 10px rgba(0,0,0,0.3); }
.main-nav.active { display: block; transform: translateX(0); }
.nav-menu { display: flex; flex-direction: column; justify-content: flex-start; align-items: stretch; width: 100%; padding-top: 10px; }
.nav-menu a { padding: 15px 24px; border-bottom: 1px solid rgba(255,255,255,0.1); font-size: 16px; }
.mobile-nav-buttons { display: flex; justify-content: center; align-items: center; gap: 10px; padding: 10px 15px; background-color: #FFFFFF; border-bottom: 2px solid var(--primary-color); }
.mobile-nav-buttons .btn { padding: 10px 24px; font-size: 14px; }
.hamburger-menu { display: flex; position: absolute; right: 16px; top: 16px; width: 28px; height: 22px; flex-direction: column; justify-content: space-between; cursor: pointer; }
.hamburger-menu span { display: block; height: 3px; width: 100%; background-color: var(--primary-color); border-radius: 3px; transition: all 0.3s ease; }
.hamburger-menu.active span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.hamburger-menu.active span:nth-child(2) { opacity: 0; }
.hamburger-menu.active span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }
.mobile-menu-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.5); z-index: 999; }
.mobile-menu-overlay.active { display: block; }
.page-content img { max-width: 100% !important; height: auto !important; display: block; }
.page-content { overflow-x: hidden; max-width: 100%; }
body { overflow-x: hidden; }
}
.site-footer { background-color: #1a1a1a; color: #CCCCCC; font-family: Arial, sans-serif; padding: 30px 20px 15px; }
.footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 30px; padding-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand .footer-logo { font-size: 30px; font-weight: 900; color: #FFFFFF; text-decoration: none; display: inline-block; margin-bottom: 10px; }
.footer-brand .footer-desc { font-size: 14px; line-height: 1.6; color: #CCCCCC; margin: 0; }
.footer-heading { color: #FFFFFF; font-size: 16px; font-weight: 700; margin-bottom: 12px; }
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: #CCCCCC; text-decoration: none; font-size: 14px; transition: color 0.3s; }
.footer-links a:hover { color: #FFD700; }
.footer-bottom { max-width: 1200px; margin: 15px auto 0; padding-top: 10px; text-align: center; }
.footer-bottom p { color: rgba(255,255,255,0.7); font-size: 13px; margin: 0; }
/* 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;
}