:root { --header-offset: 166px; --primary: #FF8C1A; --secondary: #FFA53A; --btn-gradient: linear-gradient(180deg, #FFA53A 0%, #D96800 100%); --card-bg: #17191F; --bg: #0D0E12; --text-main: #FFF3E6; --border: #A84F0C; --glow: #FFB04D; --deep-orange: #D96800; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body { padding-top: var(--header-offset); font-family: Arial, Helvetica, sans-serif; background-color: var(--bg); color: var(--text-main); }
.site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background-color: var(--bg); box-shadow: 0 4px 20px rgba(0,0,0,0.6); border-bottom: 2px solid var(--border); }
.header-top { background-color: #1A1512; width: 100%; border-bottom: 1px solid var(--border); }
.header-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 6px 20px; min-height: 68px; }
.logo { color: var(--text-main); font-size: 32px; font-weight: 800; text-decoration: none; letter-spacing: 1px; line-height: 1; display: inline-block; }
.logo:hover { color: var(--primary); }
.desktop-nav-buttons { display: flex; align-items: center; gap: 8px; }
.btn { display: inline-block; text-decoration: none; color: #1A1512; font-weight: 700; border-radius: 6px; padding: 10px 18px; transition: all 0.3s ease; }
.btn-primary { background: var(--btn-gradient); border: 1px solid var(--primary); }
.btn-primary:hover { box-shadow: 0 0 10px var(--glow); transform: translateY(-1px); }
.btn-secondary { background: var(--card-bg); border: 1px solid var(--primary); color: var(--text-main); }
.btn-secondary:hover { box-shadow: 0 0 10px rgba(255, 140, 26, 0.5); transform: translateY(-1px); }
.main-nav { width: 100%; min-height: 52px; background-color: #141518; display: flex; }
.nav-container { max-width: 1200px; width: 100%; margin: 0 auto; display: flex; flex-direction: row; justify-content: center; align-items: center; padding: 0 20px; }
.nav-list { display: flex; flex-direction: row; list-style: none; padding: 0; margin: 0; }
.nav-list li a { display: inline-block; padding: 14px 14px; color: var(--text-main); text-decoration: none; font-weight: 600; font-size: 14px; transition: color 0.3s ease; }
.nav-list li a:hover { color: var(--primary); }
.hamburger-menu, .mobile-nav-buttons, .mobile-logo, .mobile-menu-overlay { display: none; }
.site-footer { background-color: #141516; color: #CCC; border-top: 3px solid var(--border); padding: 50px 0 0; }
.footer-container { max-width: 1200px; width: 100%; margin: 0 auto; display: grid; grid-template-columns: 1.2fr 1fr 1fr 1fr; gap: 40px; padding: 0 20px 40px; }
.footer-brand .footer-logo { font-size: 28px; font-weight: 800; color: var(--text-main); text-decoration: none; }
.footer-brand p { margin-top: 15px; line-height: 1.6; font-size: 14px; }
.footer-section h3 { color: var(--primary); font-size: 16px; font-weight: 700; margin-bottom: 15px; }
.footer-nav ul, .footer-section ul { list-style: none; padding: 0; }
.footer-section li { margin-bottom: 8px; }
.footer-section li a { color: #BBB; text-decoration: none; font-size: 13px; transition: color 0.2s ease; }
.footer-section li a:hover { color: var(--primary); }
.footer-bottom { background-color: #0B0C0E; padding: 20px; text-align: center; border-top: 1px solid #2A2B2E; font-size: 14px; color: #AAA; display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.footer-bottom p { margin: 0; }
@media (max-width: 768px) {
  :root { --header-offset: 146px; }
  .site-header { min-height: 0; }
  .header-container { width: 100%; max-width: 100%; padding: 0 15px; min-height: 60px; position: relative; }
  .desktop-nav-buttons { display: none; }
  .logo { margin: 0 auto; display: block; font-size: 28px; position: absolute; left: 50%; transform: translateX(-50%); }
  .hamburger-menu { display: flex; flex-direction: column; justify-content: center; align-items: flex-start; cursor: pointer; background: none; border: none; padding: 10px 0; width: 30px; height: 40px; z-index: 1001; outline: none; margin-right: auto; }
  .hamburger-menu span { display: block; width: 100%; height: 3px; background-color: var(--text-main); margin: 3px 0; transition: 0.4s ease; border-radius: 2px; }
  .hamburger-menu.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); background: var(--primary); }
  .hamburger-menu.active span:nth-child(2) { opacity: 0; }
  .hamburger-menu.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); background: var(--primary); }
  .main-nav { display: none; position: fixed; top: 0; left: 0; width: 280px; height: 100vh; background-color: #1A1512; z-index: 1002; transform: translateX(-100%); transition: transform 0.3s ease; box-shadow: 4px 0 20px rgba(0,0,0,0.6); }
  .main-nav.active { display: flex; transform: translateX(0); }
  .main-nav .mobile-logo { display: inline-block; margin: 20px auto; color: var(--text-main); font-size: 28px; font-weight: 800; text-decoration: none; text-align: center; width: 100%; }
  .main-nav .nav-list { flex-direction: column; align-items: center; width: 100%; overflow-y: auto; flex: 1; padding-bottom: 20px; }
  .main-nav .nav-list li { display: block; width: 100%; text-align: center; border-bottom: 1px solid #2A2B2E; }
  .main-nav .nav-list li a { display: block; width: 100%; padding: 16px 20px; font-size: 16px; font-weight: 600; color: var(--text-main); }
  .main-nav .nav-list li a:hover { color: var(--primary); background-color: rgba(255,140,26,0.1); }
  .mobile-nav-buttons { display: flex; position: fixed; top: 60px; left: 0; width: 100%; z-index: 900; background-color: #1A1512; justify-content: center; gap: 8px; padding: 6px 10px; }
  .mobile-nav-buttons .btn { flex: 1; text-align: center; font-size: 14px; padding: 8px 10px; min-width: 120px; }
  .mobile-menu-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.7); z-index: 999; }
  .mobile-menu-overlay.active { display: block; }
  .site-footer .footer-container { width: 100%; max-width: 100%; grid-template-columns: 1fr; padding: 20px; gap: 30px; }
  .footer-container, .nav-container { width: 100%; max-width: none; }
  .footer-bottom { flex-direction: column; gap: 8px; }
  .page-content img { max-width: 100% !important; height: auto !important; display: block; }
  .page-content { overflow-x: hidden; max-width: 100%; }
  body { overflow-x: 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;
}