:root { --header-offset: 122px; --primary-color: #FF8C1A; --secondary-color: #FFA53A; --card-bg: #17191F; --background-color: #0D0E12; --text-main: #FFF3E6; --border-color: #A84F0C; --glow-color: #FFB04D; --deep-orange: #D96800; }
body { padding-top: var(--header-offset); margin: 0; font-family: Arial, sans-serif; background-color: var(--background-color); color: var(--text-main); line-height: 1.6; overflow-x: hidden; }

.site-header { position: fixed; top: 0; left: 0; right: 0; width: 100%; z-index: 1000; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2); background-color: var(--background-color); }

.header-top { box-sizing: border-box; min-height: 68px; height: 68px; display: flex; align-items: center; overflow: hidden; background-color: var(--deep-orange); 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: 28px; font-weight: bold; color: var(--text-main); text-decoration: none; display: block; }
.logo img { display: block; max-height: 60px; height: auto; width: auto; max-width: 280px; object-fit: contain; }

.desktop-nav-buttons { display: flex; gap: 12px; align-items: center; }
.mobile-nav-buttons { box-sizing: border-box; display: none; min-height: 48px; background-color: var(--background-color); padding: 10px 20px; width: 100%; }

.btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; border-radius: 8px; text-decoration: none; color: var(--text-main); font-weight: bold; background: linear-gradient(180deg, #FFA53A 0%, #D96800 100%); transition: transform 0.2s ease, box-shadow 0.2s ease; border: none; cursor: pointer; white-space: nowrap; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 4px 15px rgba(255, 176, 77, 0.4); }

.hamburger-menu { display: none; flex-direction: column; justify-content: space-around; width: 30px; height: 25px; cursor: pointer; padding: 5px 0; border: none; background: transparent; z-index: 1001; }
.hamburger-menu span { display: block; width: 100%; height: 3px; background-color: var(--text-main); border-radius: 3px; transition: all 0.3s ease; }
.hamburger-menu.active span:nth-child(1) { transform: translateY(11px) rotate(45deg); }
.hamburger-menu.active span:nth-child(2) { opacity: 0; }
.hamburger-menu.active span:nth-child(3) { transform: translateY(-11px) rotate(-45deg); }

.main-nav { box-sizing: border-box; min-height: 52px; height: 52px; display: flex; align-items: center; overflow: hidden; background-color: var(--primary-color); width: 100%; transition: transform 0.3s ease; }
.nav-container { box-sizing: border-box; height: 100%; max-width: 1200px; margin: 0 auto; display: flex; flex-direction: row; justify-content: center; align-items: center; padding: 0 20px; }
.main-nav .nav-item { padding: 10px 15px; text-decoration: none; color: var(--text-main); font-weight: bold; transition: background-color 0.3s ease; white-space: nowrap; }
.main-nav .nav-item:hover { background-color: var(--deep-orange); border-radius: 4px; }

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

/* Footer Styles */
.site-footer { background-color: var(--card-bg); color: #ccc; padding: 40px 20px 20px; font-size: 14px; }
.footer-top-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; max-width: 1200px; margin: 0 auto 30px; }
.footer-col-title { color: var(--text-main); font-size: 18px; margin-bottom: 15px; }
.footer-about .footer-logo { font-size: 24px; color: var(--text-main); text-decoration: none; font-weight: bold; display: block; margin-bottom: 15px; }
.footer-about .footer-description { line-height: 1.8; color: #bbb; 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: #bbb; text-decoration: none; transition: color 0.3s ease; }
.footer-nav a:hover { color: var(--primary-color); }
.footer-bottom { max-width: 1200px; margin: 0 auto; text-align: center; padding-top: 20px; border-top: 1px solid var(--border-color); color: #888; }
.footer-bottom p { margin: 0; }

/* Mobile Styles */
@media (max-width: 768px) {
  :root { --header-offset: 146px; }
  body { overflow-x: hidden; }
  .page-content img { max-width: 100% !important; height: auto !important; display: block; }
  .page-content { overflow-x: hidden; max-width: 100%; }

  .site-header { box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2); }
  .header-top { min-height: 60px !important; height: 60px !important; background-color: var(--deep-orange); }
  .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; font-size: 24px; max-width: calc(100% - 100px); /* Adjust for hamburger menu width */ }
  .logo img { max-height: 56px !important; }

  .desktop-nav-buttons { display: none !important; }
  .mobile-nav-buttons { display: flex !important; min-height: 48px; align-items: center; justify-content: center; width: 100%; max-width: 100%; box-sizing: border-box; padding: 10px 15px; overflow: hidden; gap: 10px; flex-wrap: nowrap; background-color: var(--background-color); }
  .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; }

  .hamburger-menu { display: flex; position: absolute; left: 15px; top: 50%; transform: translateY(-50%); }

  .main-nav { display: none; flex-direction: column; position: fixed; top: var(--header-offset); left: 0; width: 80%; max-width: 300px; height: calc(100% - var(--header-offset)); background-color: var(--card-bg); box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3); transform: translateX(-100%); transition: transform 0.3s ease; overflow-y: auto; z-index: 1000; padding-top: 20px; }
  .main-nav.active { display: flex; transform: translateX(0); }
  .nav-container { flex-direction: column; padding: 0; width: 100%; height: auto; max-width: none; }
  .main-nav .nav-item { width: 100%; text-align: left; padding: 12px 20px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
  .main-nav .nav-item:last-child { border-bottom: none; }
  .main-nav .nav-item:hover { background-color: var(--deep-orange); }

  .overlay.active { display: block; }

  .footer-top-grid { grid-template-columns: 1fr; text-align: center; }
  .footer-col { margin-bottom: 30px; }
  .footer-col:last-child { margin-bottom: 0; }
  .footer-about .footer-logo { text-align: center; }
  .footer-nav { text-align: center; }
  .footer-nav li { display: inline-block; margin: 0 10px 10px; }
}
/* 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;
}