html { scroll-behavior: smooth; }
body { margin: 0; font-family: 'Arial', sans-serif; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; background-color: #140C0C; color: #FFF1E8; padding-top: var(--header-offset); }
:root { --header-offset: 122px; --primary-color: #C61F1F; --secondary-color: #E53030; --card-bg: #2A1212; --bg-color: #140C0C; --text-main: #FFF1E8; --border-color: #6A1E1E; --gold-color: #F3C54D; --deep-red: #7E0D0D; --button-gradient: linear-gradient(180deg, #FFB04A 0%, #D86A14 100%); }

/* General container styling */
.header-container, .nav-container, .footer-top-grid { max-width: 1200px; margin: 0 auto; padding-left: 20px; padding-right: 20px; box-sizing: border-box; }

/* Site Header */
.site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5); }

/* Header Top */
.header-top { background-color: var(--deep-red); min-height: 68px; height: 68px; display: flex; align-items: center; overflow: hidden; width: 100%; box-sizing: border-box; }
.header-top .header-container { height: 100%; display: flex; justify-content: space-between; align-items: center; }

/* Logo */
.logo, .footer-logo { font-size: 24px; font-weight: bold; color: var(--gold-color); text-decoration: none; display: flex; align-items: center; white-space: nowrap; }
.logo img { display: block; max-height: 60px; height: auto; width: auto; max-width: 280px; object-fit: contain; }
.logo:hover, .footer-logo:hover { opacity: 0.8; }

/* Desktop Nav Buttons */
.desktop-nav-buttons { display: flex; gap: 12px; align-items: center; }
.desktop-nav-buttons .btn { text-decoration: none; padding: 10px 20px; border-radius: 5px; font-weight: bold; transition: background-color 0.3s ease, transform 0.2s ease; white-space: nowrap; }
.desktop-nav-buttons .btn-primary { background: var(--button-gradient); color: #FFF1E8; border: none; }
.desktop-nav-buttons .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3); }
.desktop-nav-buttons .btn-secondary { background-color: var(--primary-color); color: #FFF1E8; border: 1px solid var(--border-color); }
.desktop-nav-buttons .btn-secondary:hover { background-color: var(--secondary-color); transform: translateY(-2px); box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3); }

/* Main Navigation */
.main-nav { background-color: var(--primary-color); min-height: 52px; height: 52px; display: flex; align-items: center; overflow: hidden; width: 100%; box-sizing: border-box; }
.main-nav .nav-container { height: 100%; display: flex; flex-direction: row; justify-content: center; align-items: center; gap: 25px; }
.main-nav .nav-link { color: var(--text-main); text-decoration: none; font-weight: bold; padding: 10px 0; position: relative; transition: color 0.3s ease; white-space: nowrap; }
.main-nav .nav-link::after { content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background-color: var(--gold-color); transition: width 0.3s ease; }
.main-nav .nav-link:hover::after { width: 100%; }
.main-nav .nav-link:hover { color: var(--gold-color); }

/* Hamburger Menu */
.hamburger-menu { display: none; background: none; border: none; cursor: pointer; padding: 10px; z-index: 1001; position: relative; }
.hamburger-menu .bar { display: block; width: 25px; height: 3px; background-color: var(--text-main); margin: 5px auto; transition: all 0.3s ease; }
.hamburger-menu.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger-menu.active .bar:nth-child(2) { opacity: 0; }
.hamburger-menu.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Mobile Nav Buttons (hidden by default on desktop) */
.mobile-nav-buttons { box-sizing: border-box; display: none; min-height: 48px; background-color: var(--card-bg); }

/* Overlay */
.overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.7); z-index: 999; }
.overlay.active { display: block; }

/* Footer */
.site-footer { background-color: var(--bg-color); padding: 40px 0 20px; border-top: 1px solid var(--border-color); text-align: center; }
.footer-top-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: left; margin-bottom: 30px; }
.footer-col h3 { color: var(--gold-color); font-size: 18px; margin-bottom: 15px; }
.footer-col p { font-size: 14px; line-height: 1.6; color: var(--text-main); word-wrap: break-word; overflow-wrap: break-word; }
.footer-nav { list-style: none; padding: 0; margin: 0; }
.footer-nav li { margin-bottom: 8px; }
.footer-nav a { color: var(--text-main); text-decoration: none; font-size: 14px; transition: color 0.3s ease; }
.footer-nav a:hover { color: var(--gold-color); }
.footer-bottom { border-top: 1px solid var(--border-color); padding-top: 20px; margin-top: 20px; font-size: 13px; color: var(--text-main); text-align: center; }
.footer-bottom p { margin: 0; }

/* Footer dynamic slot anchor */
.footer-slot-anchor-inner { min-height: 1px; }

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

  /* Header Top */
  .header-top { min-height: 60px !important; height: 60px !important; }
  .header-top .header-container { width: 100%; max-width: none; padding-left: 15px; padding-right: 15px; position: relative; }
  .logo { flex: 1 !important; display: flex !important; justify-content: center !important; align-items: center !important; }
  .logo img { max-height: 56px !important; }
  .hamburger-menu { display: block; position: absolute; left: 15px; top: 50%; transform: translateY(-50%); }
  .desktop-nav-buttons { display: none !important; }

  /* Mobile Nav Buttons */
  .mobile-nav-buttons {
    display: flex !important;
    min-height: 48px;
    align-items: center;
    width: 100%; max-width: 100%;
    box-sizing: border-box;
    padding-left: 15px; padding-right: 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    background-color: var(--card-bg);
  }
  .mobile-nav-buttons .btn {
    flex: 1; min-width: 0;
    max-width: calc(50% - 5px);
    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 */
  .main-nav {
    min-height: 48px !important; height: 48px !important;
    display: none; /* Hidden by default */
    flex-direction: column;
    position: fixed; top: var(--header-offset); left: 0; width: 70%; height: calc(100% - var(--header-offset));
    background-color: var(--card-bg); /* Darker background for mobile menu */
    padding: 20px;
    box-sizing: border-box;
    transform: translateX(-100%); /* Start off-screen */
    transition: transform 0.3s ease;
    overflow-y: auto;
    align-items: flex-start;
    z-index: 1000;
  }
  .main-nav.active { display: flex; transform: translateX(0); /* Slide in */ }
  .main-nav .nav-container { flex-direction: column; align-items: flex-start; width: 100%; max-width: none; padding: 0; gap: 15px; }
  .main-nav .nav-link { width: 100%; padding: 10px 0; border-bottom: 1px solid var(--border-color); font-size: 16px; }
  .main-nav .nav-link::after { display: none; }

  /* Footer */
  .footer-top-grid { grid-template-columns: 1fr; text-align: center; }
  .footer-col { margin-bottom: 20px; }
  .footer-col h3 { margin-top: 20px; }
  .footer-col:first-child .footer-logo { justify-content: center; }
  .footer-col .footer-logo { display: flex; justify-content: center; }
  .footer-nav { text-align: center; }

  /* 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 { 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;
  }
}