:root { --header-offset: 122px; --primary-color: #C91F17; --auxiliary-color: #E53935; --button-gradient: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%); --card-bg-color: #D32F2F; --background-color: #B71C1C; --text-main-color: #FFF5E1; --border-color: #F2B544; --glow-color: #FFCC66; --gold-color: #F4D34D; --deep-red-color: #7A0E0E; }

body { margin: 0; font-family: Arial, sans-serif; padding-top: var(--header-offset); color: var(--text-main-color); background-color: var(--background-color); }

.site-header { position: fixed; top: 0; left: 0; right: 0; width: 100%; z-index: 1000; box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2); }

.header-top { box-sizing: border-box; min-height: 68px; height: 68px; display: flex; align-items: center; overflow: hidden; background-color: var(--deep-red-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 { color: var(--text-main-color); text-decoration: none; font-size: 28px; font-weight: bold; display: block; white-space: nowrap; }
.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: var(--primary-color); width: 100%; padding: 0 20px; }

.main-nav { box-sizing: border-box; min-height: 52px; height: 52px; display: flex; align-items: center; overflow: hidden; background-color: var(--primary-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: var(--text-main-color); text-decoration: none; padding: 0 15px; font-size: 16px; transition: color 0.3s ease; white-space: nowrap; }
.nav-link:hover, .nav-link.active { color: var(--gold-color); }

.btn { text-decoration: none; padding: 10px 20px; border-radius: 8px; font-weight: bold; text-align: center; white-space: nowrap; transition: all 0.3s ease; color: var(--text-main-color); border: 1px solid var(--border-color); cursor: pointer; }
.btn-login { background: var(--button-gradient); }
.btn-register { background: var(--button-gradient); }
.btn:hover { filter: brightness(1.1); box-shadow: 0 0 8px var(--glow-color); }

.hamburger-menu { display: none; flex-direction: column; justify-content: space-around; width: 30px; height: 25px; cursor: pointer; padding: 5px; position: relative; z-index: 1001; }
.hamburger-menu span { display: block; width: 100%; height: 3px; background-color: var(--text-main-color); border-radius: 2px; 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); }

.overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.7); z-index: 999; }

.site-footer { background-color: var(--background-color); padding: 40px 20px 20px; color: var(--text-main-color); font-size: 14px; }
.footer-top-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; max-width: 1200px; margin: 0 auto 30px auto; }
.footer-col { margin-bottom: 20px; }
.footer-logo { color: var(--text-main-color); text-decoration: none; font-size: 24px; font-weight: bold; display: block; margin-bottom: 15px; }
.footer-description { line-height: 1.6; margin-bottom: 15px; overflow-wrap: break-word; word-wrap: break-word; }
.footer-heading { font-size: 18px; color: var(--gold-color); margin-bottom: 15px; }
.footer-nav { list-style: none; padding: 0; margin: 0; }
.footer-nav li { margin-bottom: 8px; }
.footer-nav a { color: var(--text-main-color); text-decoration: none; transition: color 0.3s ease; }
.footer-nav a:hover { color: var(--gold-color); }
.footer-slot-anchor { display: block; height: 0; overflow: hidden; visibility: hidden; }
.footer-slot-anchor-inner { display: block; height: 0; overflow: hidden; visibility: hidden; }
.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, 0.1); font-size: 13px; }
.footer-bottom p { margin: 0; }

/* Mobile specific styles */
@media (max-width: 768px) {
  :root { --header-offset: 110px; }

  .page-content img { max-width: 100% !important; height: auto !important; display: block; }
  .page-content { overflow-x: hidden; max-width: 100%; }
  body { overflow-x: hidden; }
  body.no-scroll { overflow: hidden; }

  .header-top { min-height: 60px !important; height: 60px !important; }
  .header-container { width: 100%; max-width: none; padding: 0 15px; position: relative; }
  .logo { flex: 1 !important; display: flex !important; justify-content: center !important; align-items: center !important; font-size: 24px; }
  .logo img { max-height: 56px !important; }

  .hamburger-menu { display: flex; margin-left: 0; }
  .desktop-nav-buttons { display: none !important; }
  .mobile-nav-buttons {
    display: flex !important;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    width: 100%; max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    background-color: var(--auxiliary-color);
  }
  .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: 100vh; /* Full viewport height for mobile menu */
    width: 280px; /* Adjust as needed */
    position: fixed;
    top: 0;
    left: 0;
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    background-color: var(--deep-red-color); /* Darker background for menu */
    z-index: 1000;
    display: flex; /* Ensure it can be block/flex when active */
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 60px; /* Space for fixed header-top */
    box-sizing: border-box;
  }
  .main-nav.active {
    transform: translateX(0);
    display: flex; /* Explicitly set display when active */
  }

  .nav-container {
    height: auto;
    width: 100%; max-width: none; padding: 0;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
  }
  .nav-link { padding: 12px 20px; width: 100%; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
  .nav-link:last-child { border-bottom: none; }

  .footer-top-grid { grid-template-columns: 1fr; gap: 20px; }
  .footer-col { text-align: center; }
  .footer-nav { text-align: center; }
}
/* 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;
  }
}