:root { --header-offset: 122px; --primary-color: #017439; --secondary-color: #FFFFFF; --register-btn-bg: #C30808; --login-btn-bg: #C30808; --btn-text-color: #FFFF00; --site-bg-color: #FFFFFF; }

html { scroll-behavior: smooth; }
body { margin: 0; font-family: Arial, sans-serif; line-height: 1.6; color: #333; padding-top: var(--header-offset); overflow-x: hidden; }

/* Site Header */
.site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background-color: var(--primary-color); box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2); }

.header-top { box-sizing: border-box; min-height: 68px; height: 68px; display: flex; align-items: center; overflow: hidden; background-color: var(--primary-color); 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 { font-size: 28px; font-weight: bold; color: var(--btn-text-color); text-decoration: none; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.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; }

.btn { display: inline-flex; justify-content: center; align-items: center; padding: 10px 20px; border-radius: 5px; font-size: 15px; font-weight: bold; text-decoration: none; cursor: pointer; transition: background-color 0.3s ease, transform 0.2s ease; white-space: nowrap; border: none; }
.btn:hover { transform: translateY(-2px); }
.btn-register { background-color: var(--register-btn-bg); color: var(--btn-text-color); }
.btn-register:hover { background-color: darken(var(--register-btn-bg), 10%); }
.btn-login { background-color: var(--login-btn-bg); color: var(--btn-text-color); }
.btn-login:hover { background-color: darken(var(--login-btn-bg), 10%); }

.mobile-nav-buttons { box-sizing: border-box; display: none; min-height: 48px; background-color: #1a1a1a; /* Dark background for mobile buttons */ padding: 0 15px; }

.main-nav { box-sizing: border-box; min-height: 52px; height: 52px; display: flex; align-items: center; overflow: hidden; background-color: var(--secondary-color); width: 100%; border-top: 1px solid rgba(0,0,0,0.1); /* Separator */}
.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(--primary-color); text-decoration: none; padding: 10px 15px; font-size: 16px; font-weight: bold; transition: color 0.3s ease, background-color 0.3s ease; white-space: nowrap; }
.nav-link:hover { color: var(--register-btn-bg); background-color: rgba(0,0,0,0.05); }
.nav-link.current-active { color: var(--register-btn-bg); }

.hamburger-menu { display: none; cursor: pointer; padding: 10px; position: relative; width: 30px; height: 20px; }
.hamburger-menu span { display: block; height: 3px; background-color: var(--btn-text-color); margin-bottom: 5px; transition: all 0.3s ease; border-radius: 2px; }
.hamburger-menu span:last-child { margin-bottom: 0; }
.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); }

.mobile-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 999; }
.mobile-overlay.active { display: block; }

/* Site Footer */
.site-footer { background-color: #222; color: #ccc; padding: 40px 0 20px; font-size: 14px; text-align: left; }
.site-footer a { color: #fff; text-decoration: none; transition: color 0.3s ease; }
.site-footer a:hover { color: var(--register-btn-bg); }

.footer-top-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.footer-col h3 { color: #fff; font-size: 16px; margin-bottom: 15px; }
.footer-col p { margin-bottom: 10px; line-height: 1.8; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 8px; }

.footer-logo { font-size: 24px; font-weight: bold; color: var(--btn-text-color); text-decoration: none; display: block; margin-bottom: 15px; }
.footer-description { color: #bbb; word-wrap: break-word; overflow-wrap: break-word; }

.footer-slot-anchor-inner { min-height: 1px; /* Ensures the container takes up space */ }

.footer-bottom { text-align: center; padding: 20px 20px 0; margin-top: 30px; border-top: 1px solid #333; color: #999; max-width: 1200px; margin-left: auto; margin-right: auto; }
.footer-bottom p { margin: 0; }

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

  .header-top { min-height: 60px !important; height: 60px !important; }
  .header-container { width: 100%; max-width: none; padding: 0 15px; justify-content: space-between; }
  
  .hamburger-menu { display: block; order: -1; z-index: 2; /* Ensure hamburger is above logo for interaction */ }
  .logo { flex: 1 !important; display: flex !important; justify-content: center !important; align-items: center !important; font-size: 24px; }
  .logo img { max-height: 56px !important; max-width: 100%; height: auto; }
  .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: 0 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    justify-content: center;
    background-color: var(--primary-color); /* Match header top for consistency */
    border-top: 1px solid rgba(255,255,255,0.1);
  }
  .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: auto !important; /* Auto height for content */
    display: none; /* Hidden by default, shown with JS */
    position: fixed; top: var(--header-offset); left: 0;
    width: 80%; /* Sidebar width */
    max-width: 300px; /* Max width for larger mobiles */
    height: calc(100% - var(--header-offset)); /* Full height below header */
    background-color: var(--secondary-color); /* White background for menu */
    flex-direction: column;
    transform: translateX(-100%); /* Slide out from left */
    transition: transform 0.3s ease; /* Smooth animation */
    z-index: 1001; /* Above overlay */
    overflow-y: auto; /* Scrollable menu content */
    box-shadow: 2px 0 5px rgba(0,0,0,0.2);
    border-top: none;
  }
  .main-nav.active { display: flex; transform: translateX(0); }

  .nav-container { width: 100%; max-width: none; padding: 20px 15px; flex-direction: column; align-items: flex-start; }
  .nav-link { width: 100%; padding: 12px 0; border-bottom: 1px solid #eee; font-size: 15px; }
  .nav-link:last-child { border-bottom: none; }

  /* Footer mobile layout */
  .footer-top-grid { grid-template-columns: 1fr; padding: 0 15px; }
  .footer-col { margin-bottom: 20px; }
  .footer-col:last-child { margin-bottom: 0; }

  /* Mobile overflow prevention */
  .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;
}