/* Global Reset & Base */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: #FFF3E6; /* Text Main */
  background-color: #0D0E12; /* Background */
  padding-top: var(--header-offset); /* Crucial for fixed header */
  overflow-x: hidden; /* Prevent horizontal scroll for desktop */
}
a { text-decoration: none; color: #FFA53A; }
ul { list-style: none; }

/* Variables */
:root {
  --header-offset: 122px; /* Desktop: 68px (header-top) + 52px (main-nav) + 2px (safety) */
  --main-color: #FF8C1A;
  --accent-color: #FFA53A;
  --card-bg: #17191F;
  --bg-color: #0D0E12;
  --text-main: #FFF3E6;
  --border-color: #A84F0C;
  --glow-color: #FFB04D;
  --deep-orange: #D96800;
}

/* Site Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3); /* Suspended effect */
  background-color: var(--bg-color); /* Fallback, specific sections will override */
}

/* Header Top */
.header-top {
  min-height: 68px;
  height: 68px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--bg-color); /* Darker background */
  width: 100%;
  border-bottom: 1px solid var(--border-color);
}
.header-container {
  width: 100%;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px; /* Padding for logo and buttons */
}
.logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--accent-color); /* Use accent for logo text */
  text-transform: uppercase;
  display: flex; /* For potential image logo alignment */
  align-items: center;
  height: 100%;
}
.logo img {
  display: block;
  max-height: 60px; /* Desktop max height */
  height: auto;
  width: auto;
  max-width: 280px;
  object-fit: contain;
}

/* Desktop Nav Buttons */
.desktop-nav-buttons {
  display: flex;
  gap: 10px;
}
.btn {
  padding: 10px 18px;
  border-radius: 5px;
  font-weight: bold;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none; /* Remove underline */
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
  color: var(--text-main); /* Text Main for button text */
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.btn-primary {
  background: linear-gradient(180deg, var(--accent-color) 0%, var(--deep-orange) 100%); /* Button gradient */
  border: 1px solid var(--deep-orange);
}
.btn-primary:hover {
  box-shadow: 0 0 10px var(--glow-color);
}
.btn-secondary {
  background-color: var(--card-bg); /* Darker background for secondary button */
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  background-color: #2a2d37; /* Slightly lighter on hover */
}

/* Mobile Nav Buttons (Desktop hidden) */
.mobile-nav-buttons {
  display: none; /* Hidden by default on desktop */
}

/* Main Navigation */
.main-nav {
  min-height: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--card-bg); /* Lighter background for main nav */
  width: 100%;
}
.nav-container {
  width: 100%;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  padding: 0 20px;
  gap: 20px; /* Spacing between nav links */
}
.nav-link {
  color: var(--text-main);
  font-weight: bold;
  padding: 5px 0;
  position: relative;
  white-space: nowrap; /* Prevent wrapping */
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: width 0.3s ease;
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Hamburger Menu (Desktop hidden) */
.hamburger-menu {
  display: none; /* Hidden by default on desktop */
  cursor: pointer;
  width: 30px;
  height: 24px;
  position: relative;
  z-index: 1001; /* Above header */
  flex-direction: column;
  justify-content: space-between;
}
.hamburger-menu span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: var(--text-main);
  border-radius: 3px;
  transition: all 0.3s ease;
}
.hamburger-menu.active span:nth-child(1) { transform: translateY(10px) rotate(45deg); }
.hamburger-menu.active span:nth-child(2) { opacity: 0; }
.hamburger-menu.active span:nth-child(3) { transform: translateY(-10px) rotate(-45deg); }

/* Mobile Overlay (Desktop hidden) */
.mobile-overlay {
  display: none; /* Hidden by default on desktop */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 999; /* Below active menu */
}
.mobile-overlay.active {
  display: block;
}

/* Footer */
.site-footer {
  background-color: var(--bg-color);
  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: 10px 0;
}
.footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--accent-color);
  text-transform: uppercase;
  display: block;
  margin-bottom: 15px;
}
.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;
  color: var(--accent-color);
  margin-bottom: 15px;
  position: relative;
}
.footer-col h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 30px;
  height: 2px;
  background-color: var(--deep-orange);
}
.footer-nav li {
  margin-bottom: 8px;
}
.footer-nav a {
  color: #CCC;
  font-size: 14px;
  transition: color 0.3s ease;
}
.footer-nav a:hover {
  color: var(--accent-color);
}

/* Dynamic Slots */
.footer-slot-anchor-inner {
  margin-top: 20px; /* Spacing for dynamic content */
}
.footer-dynamic-col .footer-slot-anchor-inner {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 5px;
}
.footer-dynamic-row {
  max-width: 1200px;
  margin: 0 auto 20px;
  padding: 10px 0;
}
.footer-dynamic-row .footer-slot-anchor-inner {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
}

/* Footer Bottom */
.footer-bottom {
  text-align: center;
  font-size: 13px;
  color: #999;
  padding-top: 20px;
  border-top: 1px solid #222; /* Lighter border for bottom */
  max-width: 1200px;
  margin: 0 auto;
}

/* Ensure contrast for all text */
h1, h2, h3, h4, h5, h6 { color: var(--accent-color); }
p { color: var(--text-main); }
.site-header a, .site-footer a { color: var(--text-main); } /* Default links in header/footer */
.site-header a.logo { color: var(--accent-color); } /* Logo specific color */
.main-nav .nav-link { color: var(--text-main); } /* Nav links */
.footer-nav a { color: #CCC; } /* Footer nav links */

/* Mobile Responsive */
@media (max-width: 768px) {
  :root {
    --header-offset: 110px; /* Mobile: 60px (header-top) + 48px (mobile-nav-buttons) + 2px (safety) */
  }
  body {
    overflow-x: hidden; /* Prevent horizontal scroll for mobile */
  }
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }

  /* Header Top Mobile */
  .header-top {
    min-height: 60px;
    height: 60px;
  }
  .header-container {
    padding: 0 15px; /* Smaller padding for mobile */
    justify-content: space-between;
    width: 100%;
    max-width: none; /* Occupy full width */
    position: relative; /* For absolute logo centering */
  }
  .logo {
    position: absolute !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    max-width: calc(100% - 100px); /* Leave space for hamburger */
  }
  .logo img {
    max-height: 56px !important; /* Mobile max height */
  }

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

  /* Hamburger Menu Mobile */
  .hamburger-menu {
    display: flex; /* Show hamburger on mobile */
    order: -1; /* Place it to the left */
  }

  /* Mobile Nav Buttons */
  .mobile-nav-buttons {
    display: flex !important; /* Show mobile buttons */
    min-height: 48px;
    align-items: center;
    width: 100%; max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px; /* Smaller padding for mobile */
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap; /* Prevent buttons from wrapping */
    background-color: var(--card-bg); /* Match main nav background */
    border-bottom: 1px solid var(--border-color);
  }
  .mobile-nav-buttons .btn {
    flex: 1; min-width: 0;
    max-width: calc(50% - 5px); /* Account for gap */
    box-sizing: border-box;
    padding: 8px 12px;
    font-size: 13px;
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  /* Main Nav Mobile */
  .main-nav {
    display: none; /* Hidden by default */
    flex-direction: column;
    position: fixed;
    top: var(--header-offset); /* Below header */
    left: 0;
    width: 280px; /* Sidebar width */
    height: calc(100% - var(--header-offset));
    background-color: var(--card-bg);
    padding: 20px;
    transform: translateX(-100%); /* Off-screen initially */
    transition: transform 0.3s ease;
    z-index: 1001;
    overflow-y: auto; /* Allow scrolling for long menus */
    border-right: 1px solid var(--border-color);
  }
  .main-nav.active {
    display: flex; /* Show when active */
    transform: translateX(0); /* Slide in */
  }
  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0;
    gap: 15px;
    width: 100%;
    max-width: none; /* Occupy full width */
  }
  .nav-link {
    width: 100%;
    padding: 10px 0;
    font-size: 16px;
  }
  .nav-link::after {
    bottom: -2px;
  }

  /* Footer Mobile */
  .footer-top-grid {
    grid-template-columns: 1fr; /* Single column layout */
    gap: 20px;
    margin-bottom: 20px;
  }
  .footer-col {
    text-align: center;
  }
  .footer-col h3 {
    text-align: center;
  }
  .footer-col h3::after {
    left: 50%;
    transform: translateX(-50%);
  }
  .footer-nav {
    padding: 0;
  }
  .footer-nav li {
    margin-bottom: 5px;
  }
  .footer-logo {
    font-size: 22px;
    margin-bottom: 10px;
  }
  .footer-description {
    font-size: 13px;
  }
  .footer-dynamic-col .footer-slot-anchor-inner,
  .footer-dynamic-row .footer-slot-anchor-inner {
    justify-content: center; /* Center dynamic content */
  }
}
/* 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;
  }
}