:root { --header-offset: 122px; --primary-color: #F2C14E; --secondary-color: #FFD36B; --background-color: #0A0A0A; --card-bg-color: #111111; --text-main-color: #FFF6D6; --border-color: #3A2A12; --glow-color: #FFD36B; --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(--background-color);
  color: var(--text-main-color);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 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: 60px;
  display: flex;
  align-items: center;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 15px 30px;
  display: flex;
  align-items: center;
  width: 100%;
}

.logo {
  font-size: 2.2em;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  flex-shrink: 0;
  margin-right: 30px;
  transition: color 0.3s ease;
}

.logo:hover {
  color: var(--secondary-color);
}

.main-nav {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  flex: 1;
  gap: 30px;
}

.nav-link {
  color: var(--text-main-color);
  text-decoration: none;
  font-size: 1.1em;
  padding: 8px 15px;
  transition: color 0.3s ease, background-color 0.3s ease;
  border-radius: 5px;
}

.nav-link:hover {
  color: var(--primary-color);
  background-color: rgba(255, 255, 255, 0.1);
}

.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 {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1em;
  background: var(--button-gradient);
  color: #000000; /* Ensuring WCAG AA contrast (4.7:1 on #DDA11D) */
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

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

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

.hamburger-menu .icon-bar {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 2px;
  margin-bottom: 5px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger-menu .icon-bar:last-child {
  margin-bottom: 0;
}

.hamburger-menu.active .icon-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.hamburger-menu.active .icon-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.mobile-menu-overlay {
  display: none; /* Hidden by default */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 998;
  transition: opacity 0.3s ease;
  opacity: 0;
}

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

/* Footer Styles */
.site-footer {
  background-color: var(--background-color);
  color: var(--text-main-color);
  padding: 40px 0 20px;
  border-top: 1px solid var(--border-color);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 30px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
}

.footer-col {
  display: flex;
  flex-direction: column;
}

.footer-logo {
  font-size: 2em;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  margin-bottom: 15px;
}

.footer-description {
  font-size: 0.9em;
  line-height: 1.5;
  word-wrap: break-word;
}

.site-footer h3 {
  font-size: 1.3em;
  color: var(--primary-color);
  margin-bottom: 20px;
}

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

.footer-nav li {
  margin-bottom: 10px;
}

.footer-nav a {
  color: var(--text-main-color);
  text-decoration: none;
  font-size: 0.95em;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  margin-top: 30px;
  border-top: 1px solid var(--border-color);
  font-size: 0.9em;
  color: rgba(255, 255, 255, 0.7);
}

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

  .site-header {
    min-height: 50px;
  }

  .header-container {
    padding: 10px 15px;
    max-width: none; /* Important for mobile full width */
    width: 100%;
    justify-content: space-between;
  }

  .hamburger-menu {
    display: block;
    order: 1;
  }

  .logo {
    order: 2;
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 1.8em;
    margin-right: 0; /* Adjust margin for mobile centering */
    max-height: 40px; /* Ensure logo text doesn't take too much height */
  }

  .main-nav {
    display: none; /* Hidden by default */
    position: fixed;
    top: var(--header-offset);
    left: 0;
    width: 70%;
    height: calc(100% - var(--header-offset));
    background-color: var(--card-bg-color);
    flex-direction: column;
    padding: 20px;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 999;
    overflow-y: auto;
    align-items: flex-start;
    gap: 15px;
  }

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

  .nav-link {
    width: 100%;
    padding: 12px 15px;
    font-size: 1.1em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

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

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

  .mobile-nav-buttons {
    display: flex !important;
    order: 3;
    gap: 8px;
    flex-shrink: 0;
    z-index: 1000; /* Ensure buttons are above menu but below hamburger */
  }

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

  .footer-container {
    grid-template-columns: 1fr;
    padding: 0 15px;
  }

  .footer-col {
    margin-bottom: 20px;
  }

  .footer-col:last-child {
    margin-bottom: 0;
  }

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

/* No-scroll class for body when menu is open */
body.no-scroll {
  overflow: 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;
  }
}