:root {
  --primary-color: #F2C14E;
  --secondary-color: #FFD36B;
  --card-bg: #111111;
  --background-color: #0A0A0A;
  --text-main-color: #FFF6D6;
  --border-color: #3A2A12;
  --glow-color: #FFD36B;
  --header-offset: 122px; /* Desktop: 68px (top) + 52px (main-nav) */
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding-top: var(--header-offset);
  background-color: var(--background-color);
  color: var(--text-main-color);
  line-height: 1.6;
}

/* Shared Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  color: var(--text-main-color);
  cursor: pointer;
  border: none;
  white-space: nowrap;
  transition: all 0.3s ease;
  background: linear-gradient(180deg, #FFD86A 0%, #DDA11D 100%);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3), 0 0 15px var(--glow-color) inset;
  min-width: 80px;
  height: 40px; /* Fixed height for consistency */
  font-size: 16px;
}

.btn:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4), 0 0 20px var(--glow-color) inset;
}

/* Header Styles */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: var(--background-color); 
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  min-height: 68px; 
  display: flex;
  align-items: center;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  padding: 0 30px; /* Desktop padding */
  min-height: 68px; 
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  flex-shrink: 0;
  padding: 10px 0;
}

.main-nav {
  flex: 1;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 25px;
  margin: 0 20px;
}

.nav-link {
  color: var(--text-main-color);
  text-decoration: none;
  font-weight: bold;
  font-size: 16px;
  padding: 5px 0;
  position: relative;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--primary-color);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

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

.hamburger-menu {
  display: none; /* Hidden on desktop */
  width: 30px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  z-index: 1001;
  padding: 0;
}

.hamburger-menu .bar {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger-menu.active .bar:nth-child(1) {
  transform: translateY(10.5px) rotate(45deg);
}

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

.hamburger-menu.active .bar:nth-child(3) {
  transform: translateY(-10.5px) rotate(-45deg);
}

.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: 999;
  transition: opacity 0.3s ease;
  opacity: 0;
}

.mobile-menu-overlay.active {
  display: block;
  opacity: 1;
}

/* Footer Styles */
.site-footer {
  background-color: var(--card-bg);
  padding: 40px 20px;
  color: var(--text-main-color);
  font-size: 14px;
  border-top: 1px solid var(--border-color);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 30px;
}

.footer-section {
  flex: 1;
  min-width: 150px;
}

.footer-section h3 {
  color: var(--primary-color);
  font-size: 18px;
  margin-bottom: 15px;
}

.footer-brand .logo {
  font-size: 24px;
  margin-bottom: 15px;
  display: inline-block;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  color: var(--text-main-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.copyright {
  margin-top: 20px;
  color: #888;
}

/* Mobile Specific Styles */
@media (max-width: 768px) {
  :root {
    --header-offset: 110px; /* Mobile: 60px (top) + 48px (main-nav) */
  }

  body {
    padding-top: var(--header-offset);
    overflow-x: hidden; /* Prevent horizontal scroll for body */
  }

  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }

  .site-header {
    min-height: 60px; /* Adjusted for mobile */
  }

  .header-container {
    padding: 0 15px; /* Mobile padding */
    min-height: 60px; /* Adjusted for mobile */
  }

  .hamburger-menu {
    display: flex; /* Show hamburger on mobile */
    order: 0;
  }

  .logo {
    flex: 1; /* Allow logo to take available space for centering */
    text-align: center;
    font-size: 24px;
    order: 1;
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column;
    position: fixed;
    top: var(--header-offset); /* Start below the header */
    left: 0;
    width: 280px;
    height: calc(100% - var(--header-offset));
    background-color: var(--card-bg);
    padding: 20px;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
    transform: translateX(-100%); /* Off-screen by default */
    transition: transform 0.3s ease;
    z-index: 1000;
    align-items: flex-start;
    gap: 15px;
  }

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

  .nav-link {
    font-size: 18px;
    width: 100%;
    padding: 10px 0;
  }

  .header-buttons {
    order: 2;
    margin-left: auto; /* Push buttons to the right */
    gap: 8px;
  }
  
  .btn {
    padding: 8px 15px;
    font-size: 14px;
    min-width: 70px;
    height: 36px;
  }

  .footer-container {
    flex-direction: column;
    gap: 25px;
  }

  .footer-section {
    min-width: unset;
    flex: none;
  }
  
  .footer-brand .logo {
    font-size: 22px;
  }
}
/* 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;
  }
}