.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:#140C0C;box-shadow:0 4px 20px rgba(0,0,0,0.5);font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif}.site-header .header-top{background:linear-gradient(135deg,#7E0D0D 0%,#C61F1F 100%);width:100%;border-bottom:2px solid #6A1E1E}.site-header .header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:10px 30px;min-height:68px}.site-header .logo{font-size:26px;font-weight:800;color:#FFF1E8;text-decoration:none;letter-spacing:1px;text-transform:uppercase;display:inline-block;line-height:1.2;text-shadow:0 2px 4px rgba(0,0,0,0.3)}.site-header .logo:hover{color:#F3C54D}.site-header .desktop-nav-buttons{display:flex;gap:10px}.site-header .btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border-radius:6px;font-size:14px;font-weight:700;text-decoration:none;transition:all 0.3s ease;border:none;cursor:pointer;min-height:40px;letter-spacing:0.5px}.site-header .btn-register{background:linear-gradient(180deg,#FFB04A 0%,#D86A14 100%);color:#140C0C;box-shadow:0 4px 15px rgba(216,106,20,0.4)}.site-header .btn-register:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(216,106,20,0.5)}.site-header .btn-login{background:linear-gradient(135deg,#C61F1F 0%,#E53030 100%);color:#FFF1E8;box-shadow:0 4px 15px rgba(198,31,31,0.4);border:1px solid #F3C54D}.site-header .btn-login:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(198,31,31,0.5)}.site-header .btn-download{background:transparent;color:#F3C54D;border:2px solid #F3C54D}.site-header .btn-download:hover{background:#F3C54D;color:#140C0C;transform:translateY(-2px)}.site-header .main-nav{background:#2A1212;width:100%;display:flex;border-top:1px solid #6A1E1E;border-bottom:1px solid #140C0C}.site-header .nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;min-height:52px;gap:2px;width:100%}.site-header .nav-container a{color:#FFF1E8;text-decoration:none;font-size:15px;font-weight:600;padding:12px 16px;border-radius:4px;transition:all 0.3s ease;position:relative;white-space:nowrap}.site-header .nav-container a:hover{color:#F3C54D;background:rgba(198,31,31,0.15)}.site-header .nav-container a::after{content:'';position:absolute;bottom:4px;left:50%;transform:translateX(-50%);width:0;height:2px;background:#F3C54D;transition:width 0.3s ease}.site-header .nav-container a:hover::after{width:60%}.site-header .mobile-nav-buttons{display:none}.site-header .hamburger-menu{display:none}.site-header .mobile-menu-overlay{display:none}:root{--header-offset:122px}body{padding-top:var(--header-offset);margin:0;background:#140C0C}@media(max-width:768px){:root{--header-offset:146px}.site-header .header-container{width:100%;max-width:none;padding:8px 15px;min-height:60px}.site-header .logo{font-size:22px}.site-header .desktop-nav-buttons{display:none}.site-header .main-nav{display:none;position:fixed;top:0;left:0;width:280px;height:100vh;background:#2A1212;flex-direction:column;justify-content:flex-start;align-items:stretch;padding-top:80px;transform:translateX(-100%);transition:transform 0.3s ease;box-shadow:4px 0 30px rgba(0,0,0,0.5);z-index:1002;border-right:2px solid #6A1E1E}.site-header .main-nav.active{display:block;transform:translateX(0)}.site-header .nav-container{flex-direction:column;width:100%;max-width:none;padding:10px;gap:4px;align-items:stretch}.site-header .nav-container a{display:block;padding:14px 20px;font-size:16px;border-bottom:1px solid rgba(111,30,30,0.3);text-align:left}.site-header .nav-container a::after{display:none}.site-header .mobile-nav-buttons{display:block;width:100%;background:#140C0C;padding:8px 15px;border-top:1px solid #6A1E1E;border-bottom:1px solid #6A1E1E;z-index:1000}.site-header .mobile-nav-container{width:100%;max-width:none;display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.site-header .mobile-nav-container .btn{flex:1;min-width:100px;padding:8px 12px;font-size:13px;min-height:36px}.site-header .hamburger-menu{display:flex;position:fixed;top:12px;left:15px;z-index:1004;width:38px;height:38px;border:none;background:transparent;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;padding:6px;border-radius:6px;background:#7E0D0D;box-shadow:0 2px 10px rgba(0,0,0,0.3)}.site-header .hamburger-menu span{display:block;width:22px;height:2px;background:#FFF1E8;border-radius:2px;transition:all 0.3s ease}.site-header .hamburger-menu.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.site-header .hamburger-menu.active span:nth-child(2){opacity:0}.site-header .hamburger-menu.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.site-header .mobile-menu-overlay{display:none}.site-header .mobile-menu-overlay.active{display:block;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.6);z-index:1001}.page-content img{max-width:100% !important;height:auto !important;display:block}.page-content{overflow-x:hidden;max-width:100%}body{overflow-x:hidden}}.site-footer{background:#2A1212;color:#FFF1E8;font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;padding:60px 20px 20px;border-top:4px solid #C61F1F;position:relative}.site-footer::before{content:'';position:absolute;top:0;left:0;width:100%;height:2px;background:linear-gradient(90deg,#F3C54D,#C61F1F,#F3C54D)}.site-footer .footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px}.site-footer .footer-column h3{color:#F3C54D;font-size:18px;margin-bottom:15px;font-weight:700;position:relative;padding-bottom:10px;text-transform:uppercase}.site-footer .footer-column h3::after{content:'';position:absolute;bottom:0;left:0;width:40px;height:2px;background:linear-gradient(90deg,#C61F1F,#F3C54D)}.site-footer .footer-column p{color:#FFF1E8;font-size:14px;line-height:1.8;margin-bottom:10px}.site-footer .footer-nav{list-style:none;padding:0;margin:0}.site-footer .footer-nav li{margin-bottom:8px}.site-footer .footer-nav a{color:#FFF1E8;text-decoration:none;font-size:14px;transition:all 0.3s ease;position:relative;padding-bottom:2px}.site-footer .footer-nav a:hover{color:#F3C54D;padding-left:5px}.site-footer .footer-nav a::before{content:'›';margin-right:8px;color:#C61F1F;transition:transform 0.3s ease;display:inline-block}.site-footer .footer-nav a:hover::before{transform:translateX(3px)}.site-footer .footer-bottom{max-width:1200px;margin:40px auto 0;padding-top:20px;border-top:1px solid #6A1E1E;text-align:center;font-size:14px}.site-footer .footer-bottom p{margin:0;color:#FFF1E8}.site-footer .footer-bottom .copyright-year{color:#F3C54D;font-weight:700}.site-footer .footer-bottom .copyright-year::before{margin-right:3px}
/* 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;
}