:root { --header-offset: 122px; --primary-color: #F2C14E; --accent-color: #FFD36B; --card-bg: #111111; --page-bg: #0A0A0A; --text-main: #FFF6D6; --border-color: #3A2A12; --button-gradient: linear-gradient(180deg, #FFD86A 0%, #DDA11D 100%); }

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding-top: var(--header-offset);
  background-color: var(--page-bg);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden; /* Prevent horizontal scroll on desktop */
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--card-bg); /* Use card background for header */
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4);
  z-index: 1000;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  padding: 15px 30px;
  min-height: 52px; /* Based on main-nav height */
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  flex-shrink: 0;
  padding-right: 20px;
}

.main-nav {
  flex: 1;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 25px;
  min-height: 52px; /* For desktop nav bar height */
}

.main-nav .nav-link {
  color: var(--text-main);
  text-decoration: none;
  font-weight: bold;
  padding: 8px 0;
  transition: color 0.3s ease;
}

.main-nav .nav-link:hover,
.main-nav .nav-link.active {
  color: var(--accent-color);
}

.desktop-nav-buttons {
  display: flex;
  gap: 10px;
  margin-left: auto;
  flex-shrink: 0;
}

.mobile-nav-buttons {
  display: none !important; /* Hidden by default on desktop */
}

.btn {
  background: var(--button-gradient);
  color: #000;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  white-space: nowrap;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

/* Hamburger menu (hidden on desktop) */
.hamburger-menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 24px;
  position: relative;
  flex-shrink: 0;
  margin-right: 15px;
  z-index: 1001;
}

.hamburger-icon {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--text-main);
  border-radius: 2px;
  position: absolute;
  left: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger-icon:nth-child(1) { top: 0; }
.hamburger-icon:nth-child(2) { top: 10px; }
.hamburger-icon:nth-child(3) { top: 20px; }

.hamburger-menu.active .hamburger-icon:nth-child(1) {
  transform: translateY(10px) rotate(45deg);
}

.hamburger-menu.active .hamburger-icon:nth-child(2) {
  opacity: 0;
}

.hamburger-menu.active .hamburger-icon:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 998;
}

.mobile-menu-overlay.active {
  display: block;
}

/* Footer Styles */
.site-footer {
  background-color: var(--card-bg);
  padding: 40px 20px;
  color: var(--text-main);
  border-top: 1px solid var(--border-color);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.footer-col h3 {
  font-size: 18px;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.footer-logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  display: block;
  margin-bottom: 15px;
}

.footer-description {
  font-size: 14px;
  line-height: 1.8;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.footer-nav {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav li a {
  color: var(--text-main);
  text-decoration: none;
  display: block;
  padding: 5px 0;
  transition: color 0.3s ease;
}

.footer-nav li a:hover {
  color: var(--accent-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  margin-top: 30px;
  border-top: 1px solid var(--border-color);
  font-size: 14px;
  color: var(--text-main);
}

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

  .body {
    overflow-x: hidden;
  }

  .header-container {
    width: 100%;
    max-width: none;
    padding: 10px 15px;
    justify-content: space-between;
  }

  .hamburger-menu {
    display: block;
  }

  .logo {
    flex: 1;
    text-align: center;
    padding-right: 0;
  }

  .main-nav {
    display: none; /* Hidden by default */
    position: fixed;
    top: var(--header-offset);
    left: 0;
    width: 80%;
    max-width: 300px; /* Limit width on larger mobile screens */
    height: calc(100vh - var(--header-offset));
    background-color: var(--card-bg);
    flex-direction: column;
    padding: 20px;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.5);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    align-items: flex-start;
    gap: 15px;
    z-index: 999;
  }

  .main-nav.active {
    display: flex; /* Show when active */
    transform: translateX(0);
  }

  .main-nav .nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
  }

  .main-nav .nav-link:last-child {
    border-bottom: none;
  }

  .desktop-nav-buttons {
    display: none !important;
  }

  .mobile-nav-buttons {
    display: flex !important;
    gap: 8px;
    flex-shrink: 0;
  }

  .footer-cols {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-col:not(:first-child) {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
  }

  /* Mobile content overflow protection */
  .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;
  }
}