/* Basic Reset & Body Styles */
body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  color: var(--text-main);
  background-color: var(--body-bg);
  line-height: 1.6;
  padding-top: var(--header-offset); /* Critical for fixed header */
  overflow-x: hidden; /* Prevent horizontal scroll on body */
}
a {
  text-decoration: none;
  color: var(--text-main);
}
a:hover {
  color: var(--secondary-color);
}
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  margin-top: 0;
  margin-bottom: 10px;
}
ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

/* Color Variables */
:root {
  --primary-color: #F2C14E;
  --secondary-color: #FFD36B;
  --btn-gradient: linear-gradient(180deg, #FFD86A 0%, #DDA11D 100%);
  --card-bg: #111111;
  --body-bg: #0A0A0A;
  --text-main: #FFF6D6;
  --border-color: #3A2A12;
  --glow-color: #FFD36B;
  --header-top-bg: #1A1A1A; /* Darker for header top */
  --main-nav-bg: #2A2A2A;   /* Slightly lighter for main nav */
  --header-offset: 122px; /* Desktop: 68px (header-top) + 52px (main-nav) + 2px buffer */
}

/* Fixed Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  background-color: var(--header-top-bg); /* Default background, individual sections will override */
}

/* Header Top Section (Desktop First) */
.header-top {
  box-sizing: border-box;
  min-height: 68px;
  height: 68px; /* Fixed height for desktop */
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--header-top-bg);
  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-left: 20px;
  padding-right: 20px;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex; /* For potential image logo alignment */
  align-items: center;
  height: 100%;
}
.logo img {
  display: block;
  max-height: 60px; /* Max height for image logo on desktop */
  height: auto;
  width: auto;
  max-width: 280px;
  object-fit: contain;
}

.desktop-nav-buttons {
  display: flex; /* Show on desktop */
  gap: 12px;
  align-items: center;
}

/* Mobile Nav Buttons (Hidden by default, shown on mobile) */
.mobile-nav-buttons {
  box-sizing: border-box;
  display: none; /* Hidden on desktop */
  min-height: 48px; /* Fixed height for mobile button bar */
  background-color: var(--card-bg); /* Different background for mobile button bar */
  width: 100%;
  padding: 10px 15px; /* Default padding for mobile button bar */
  border-top: 1px solid var(--border-color);
}

/* Main Navigation (Desktop First) */
.main-nav {
  box-sizing: border-box;
  min-height: 52px;
  height: 52px; /* Fixed height for desktop */
  display: flex; /* Show on desktop */
  align-items: center;
  overflow: hidden;
  background-color: var(--main-nav-bg);
  width: 100%;
}

.nav-container {
  box-sizing: border-box;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: row; /* Horizontal on desktop */
  justify-content: center;
  align-items: center;
  padding: 0 20px;
  gap: 20px;
}

.nav-link {
  color: var(--text-main);
  font-size: 15px;
  padding: 5px 0;
  transition: color 0.3s ease;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--secondary-color);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 5px;
  font-size: 14px;
  font-weight: bold;
  text-decoration: none;
  color: var(--text-main); /* Text Main for button text */
  background: var(--btn-gradient);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}
.btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4), 0 0 12px var(--glow-color);
}

/* Hamburger Menu (Hidden on desktop) */
.hamburger-menu {
  display: none; /* Hidden on desktop */
  width: 30px;
  height: 24px;
  position: relative;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  z-index: 1001; /* Above header */
}
.hamburger-menu span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--text-main);
  position: absolute;
  left: 0;
  transition: all 0.3s ease;
  border-radius: 2px;
}
.hamburger-menu span:nth-child(1) { top: 0; }
.hamburger-menu span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger-menu span:nth-child(3) { bottom: 0; }

/* Hamburger Menu Active State (X icon) */
.hamburger-menu.active span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
.hamburger-menu.active span:nth-child(2) { opacity: 0; }
.hamburger-menu.active span:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

/* Overlay (Hidden on desktop) */
.overlay {
  display: none; /* Hidden on desktop */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.overlay.active {
  display: block;
  opacity: 1;
}

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

.footer-top-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto 30px;
}

.footer-col {
  padding-bottom: 15px;
}

.footer-logo {
  font-size: 22px;
  font-weight: bold;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 15px;
  display: block;
}

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

.footer-col h3 {
  font-size: 18px;
  margin-bottom: 20px;
  color: var(--secondary-color);
  position: relative;
  padding-bottom: 5px;
}
.footer-col h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 2px;
  background-color: var(--primary-color);
}

.footer-nav li {
  margin-bottom: 10px;
}
.footer-nav a {
  color: #CCC;
  font-size: 14px;
  transition: color 0.3s ease;
}
.footer-nav a:hover {
  color: var(--secondary-color);
}

.footer-bottom {
  text-align: center;
  font-size: 13px;
  color: #AAA;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  max-width: 1200px;
  margin: 0 auto;
}
.footer-bottom a {
    pointer-events: none;
    cursor: default;
    text-decoration: none;
    color: inherit;
}

/* Dynamic Slot Anchor Styling (must be visible) */
.footer-slot-anchor-inner {
    min-height: 1px; /* Ensure it takes up space even if empty */
    display: block; /* Ensure it's rendered */
}

/* Mobile Specific Styles */
@media (max-width: 768px) {
  /* Header Offset for Mobile */
  :root {
    --header-offset: 110px; /* Mobile: 60px (header-top) + 48px (main-nav) + 2px buffer */
  }

  /* Header Top Mobile */
  .header-top {
    min-height: 60px;
    height: 60px; /* Fixed height for mobile */
    padding: 0 15px;
    justify-content: space-between; /* Space out hamburger and logo */
  }

  .header-container {
    padding: 0; /* Remove container padding on mobile */
  }

  .logo {
    flex: 1 !important; /* Image logo centering */
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    height: 100%;
    margin-left: -30px; /* Offset hamburger width to truly center logo */
  }
  .logo img {
    max-height: 56px !important; /* Max height for image logo on mobile */
    max-width: calc(100% - 30px); /* Adjust for hamburger */
  }

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

  .hamburger-menu {
    display: block; /* Show hamburger on mobile */
  }

  /* Mobile Nav Buttons Bar */
  .mobile-nav-buttons {
    display: flex !important; /* Show mobile buttons on mobile */
    min-height: 48px;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap; /* Ensure buttons stay in one row */
  }
  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px); /* Max width for two buttons with 10px gap */
    box-sizing: border-box;
    padding: 8px 12px;
    font-size: 13px;
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
    text-align: center;
  }

  /* Main Navigation Mobile (Hidden by default, fixed position) */
  .main-nav {
    min-height: 48px;
    height: calc(100vh - var(--header-offset)); /* Fill remaining viewport height */
    position: fixed;
    top: var(--header-offset); /* Position below header and mobile buttons */
    left: 0;
    width: 280px; /* Sidebar width */
    max-width: 80%;
    background-color: var(--card-bg); /* Sidebar background */
    flex-direction: column; /* Vertical on mobile */
    justify-content: flex-start;
    align-items: flex-start;
    padding: 20px 0;
    transform: translateX(-100%); /* Hidden off-screen */
    transition: transform 0.3s ease;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.5);
    display: none; /* Hide by default */
    overflow-y: auto; /* Allow scrolling for long menus */
  }
  .main-nav.active {
    transform: translateX(0); /* Show on active */
    display: flex; /* Show menu */
  }

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 20px;
    width: 100%;
    max-width: none; /* Remove max-width for mobile */
    gap: 15px;
  }
  .nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
  }
  .nav-link:last-child {
    border-bottom: none;
  }

  /* Footer Mobile */
  .site-footer {
    padding: 30px 15px 15px;
  }
  .footer-top-grid {
    grid-template-columns: 1fr; /* Single column on mobile */
    gap: 20px;
    margin-bottom: 20px;
  }
  .footer-col {
    padding-bottom: 0;
  }
  .footer-bottom {
    padding-top: 15px;
  }

  /* Mobile 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;
  }
}

/* Body no-scroll for mobile menu */
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;
  }
}
/* 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;
}