:root { --header-offset: 122px; }
body { padding-top: var(--header-offset); margin: 0; font-family: Arial, sans-serif; line-height: 1.6; color: #333; }
.site-header { position: fixed; top: 0; left: 0; right: 0; width: 100%; z-index: 1000; box-shadow: 0 2px 5px rgba(0,0,0,0.1); background-color: #017439; }
.header-top { box-sizing: border-box; min-height: 68px; height: 68px; display: flex; align-items: center; overflow: hidden; background-color: #017439; 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: #FFFF00; text-decoration: none; display: flex; align-items: center; }
.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: #004d26; /* Darker green for mobile button bar */ }
.btn { text-decoration: none; padding: 10px 20px; border-radius: 5px; font-weight: bold; transition: all 0.3s ease; white-space: nowrap; cursor: pointer; border: none; font-size: 15px; }
.btn-register { background-color: #C30808; color: #FFFF00; }
.btn-login { background-color: #C30808; color: #FFFF00; }
.main-nav { box-sizing: border-box; min-height: 52px; height: 52px; display: flex; align-items: center; overflow: hidden; background-color: #005f2e; /* Slightly darker main color */ width: 100%; }
.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: #FFFFFF; text-decoration: none; padding: 10px 15px; font-size: 16px; transition: color 0.3s ease; white-space: nowrap; }
.nav-link:hover, .nav-link.active { color: #FFFF00; }
.hamburger-menu { display: none; flex-direction: column; justify-content: space-around; width: 30px; height: 25px; background: transparent; border: none; cursor: pointer; padding: 0; position: relative; z-index: 1002; }
.hamburger-menu .bar { display: block; width: 100%; height: 3px; background-color: #FFFFFF; border-radius: 3px; transition: all 0.3s ease; }
.hamburger-menu.active .bar:nth-child(1) { transform: translateY(11px) rotate(45deg); }
.hamburger-menu.active .bar:nth-child(2) { opacity: 0; }
.hamburger-menu.active .bar:nth-child(3) { transform: translateY(-11px) rotate(-45deg); }
.overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background-color: rgba(0,0,0,0.5); z-index: 999; }
.overlay.active { display: block; }

.site-footer { background-color: #1a1a1a; color: #e0e0e0; padding: 40px 0; }
.footer-top-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.footer-col { margin-bottom: 20px; }
.footer-col h3 { color: #FFFFFF; font-size: 18px; margin-bottom: 15px; }
.footer-logo { font-size: 24px; font-weight: bold; color: #FFFF00; text-decoration: none; margin-bottom: 15px; display: block; }
.footer-description { font-size: 14px; line-height: 1.6; word-wrap: break-word; overflow-wrap: break-word; }
.footer-nav { list-style: none; padding: 0; margin: 0; }
.footer-nav li a { color: #e0e0e0; text-decoration: none; font-size: 14px; line-height: 2.2; transition: color 0.3s ease; }
.footer-nav li a:hover { color: #FFFF00; }
.footer-bottom { border-top: 1px solid #333; text-align: center; padding-top: 20px; margin-top: 30px; font-size: 13px; color: #999; }
.footer-slot-anchor-inner { min-height: 1px; }

@media (max-width: 768px) {
    :root { --header-offset: 110px; }
    body { padding-top: var(--header-offset); overflow-x: hidden; }
    .page-content img { max-width: 100% !important; height: auto !important; display: block; }
    .page-content { overflow-x: hidden; max-width: 100%; }
    .site-header { box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
    .header-top { min-height: 60px !important; height: 60px !important; }
    .header-container { padding: 0 15px; width: 100%; max-width: none; position: relative; justify-content: space-between; }
    .hamburger-menu { display: flex; margin-right: 15px; order: -1; /* Place hamburger on the left */ }
    .logo { flex: 1 !important; display: flex !important; justify-content: center !important; align-items: center !important; margin: 0; }
    .logo img { max-height: 56px !important; }
    .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;
        background-color: #004d26;
        justify-content: center;
    }
    .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 {
        display: none; /* Hidden by default, shown by JS */
        flex-direction: column;
        position: fixed;
        top: var(--header-offset);
        left: 0;
        width: 280px;
        height: calc(100% - var(--header-offset));
        background-color: #004d26;
        overflow-y: auto;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1001;
        box-shadow: 2px 0 5px rgba(0,0,0,0.2);
    }
    .main-nav.active {
        display: flex;
        transform: translateX(0);
    }
    .nav-container { flex-direction: column; align-items: flex-start; padding: 20px 15px; width: 100%; max-width: none; height: auto; }
    .nav-link { width: 100%; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.1); font-size: 15px; }
    .nav-link:last-child { border-bottom: none; }
    .footer-top-grid { grid-template-columns: 1fr; padding: 0 15px; }
    .footer-col { margin-bottom: 30px; }
    .footer-col:last-child { margin-bottom: 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;
}