.site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background: #0D0E12; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5); font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
.header-top { width: 100%; background: #17191F; border-bottom: 2px solid #A84F0C; }
.header-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding-left: 30px; padding-right: 30px; min-height: 68px; gap: 20px; }
.logo { display: inline-block; font-size: 32px; font-weight: 900; color: #FFA53A; text-decoration: none; letter-spacing: 1px; text-shadow: 0 0 10px #FFB04D, 0 0 20px rgba(255, 138, 26, 0.5); white-space: nowrap; order: 1; }
.desktop-nav-buttons { display: flex; align-items: center; gap: 10px; order: 2; }
.btn { display: inline-block; padding: 10px 22px; border-radius: 8px; font-size: 14px; font-weight: 700; text-decoration: none; color: #FFF3E6; text-align: center; cursor: pointer; transition: all 0.3s ease; border: none; letter-spacing: 0.5px; }
.btn-register { background: linear-gradient(180deg, #FFA53A 0%, #D96800 100%); box-shadow: 0 2px 8px rgba(255, 138, 26, 0.4); }
.btn-register:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(255, 138, 26, 0.6); }
.btn-login { background: linear-gradient(180deg, #FFA53A 0%, #D96800 100%); box-shadow: 0 2px 8px rgba(255, 138, 26, 0.4); }
.btn-login:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(255, 138, 26, 0.6); }
.main-nav { display: flex; flex-direction: row; background: #0D0E12; width: 100%; border-bottom: 1px solid #A84F0C; }
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; flex-direction: row; justify-content: center; align-items: center; padding: 8px 20px; gap: 4px; }
.nav-link { color: #FFF3E6; text-decoration: none; font-size: 14px; font-weight: 600; padding: 8px 14px; border-radius: 6px; transition: all 0.3s ease; white-space: nowrap; position: relative; }
.nav-link:hover { color: #FFA53A; background: #17191F; box-shadow: 0 0 12px rgba(255, 138, 26, 0.3); }
.mobile-nav-buttons { display: none; }
.hamburger-menu { display: none; }
.mobile-menu-overlay { display: none; }
.site-footer { background: #17191F; color: #FFF3E6; padding: 50px 20px 20px; border-top: 3px solid #A84F0C; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
.footer-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer-column { flex: 1; min-width: 200px; }
.footer-logo { display: inline-block; font-size: 28px; font-weight: 900; color: #FFA53A; text-decoration: none; margin-bottom: 15px; text-shadow: 0 0 10px #FFB04D; }
.footer-description { font-size: 14px; line-height: 1.8; color: #FFF3E6; margin-top: 10px; opacity: 0.9; }
.footer-title { color: #FFA53A; font-size: 18px; margin-bottom: 20px; position: relative; padding-bottom: 10px; }
.footer-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 40px; height: 2px; background: #D96800; }
.footer-nav { display: flex; flex-direction: column; gap: 12px; }
.footer-nav a { color: #FFF3E6; text-decoration: none; font-size: 14px; transition: all 0.3s ease; padding: 4px 0; }
.footer-nav a:hover { color: #FFA53A; padding-left: 8px; }
.footer-bottom { text-align: center; margin-top: 40px; padding-top: 20px; border-top: 1px solid #A84F0C; }
.footer-bottom p { font-size: 14px; color: #FFF3E6; margin: 5px 0; }
.footer-disclaimer { font-size: 12px; opacity: 0.8; }
:root { --header-offset: 122px; }
body { padding-top: var(--header-offset); margin: 0; background: #0D0E12; }
@media (max-width: 768px) {
:root { --header-offset: 110px; }
.header-container { width: 100%; max-width: none; padding-left: 15px; padding-right: 15px; gap: 10px; }
.nav-container { width: 100%; max-width: none; padding-left: 15px; padding-right: 15px; }
.logo { flex: 1; text-align: center; font-size: 26px; }
.header-top { min-height: 60px; }
.desktop-nav-buttons { display: none; }
.main-nav { display: none; flex-direction: column; position: fixed; top: 0; left: 0; width: 280px; height: 100vh; background: #17191F; box-shadow: 2px 0 15px rgba(0, 0, 0, 0.6); z-index: 1002; transform: translateX(-100%); transition: transform 0.3s ease; padding-top: 70px; overflow-y: auto; }
.main-nav.active { display: flex; transform: translateX(0); }
.main-nav .nav-link { font-size: 15px; padding: 12px 20px; border-bottom: 1px solid rgba(168, 79, 12, 0.3); color: #FFF3E6; }
.mobile-nav-buttons { display: flex; justify-content: center; gap: 10px; padding: 8px 15px; background: #0D0E12; border-bottom: 1px solid #A84F0C; }
.mobile-nav-buttons .btn { flex: 1; max-width: 150px; padding: 10px 15px; }
.hamburger-menu { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 30px; height: 30px; cursor: pointer; z-index: 1003; order: 1; }
.hamburger-menu span { display: block; width: 100%; height: 3px; background: #FFA53A; border-radius: 3px; transition: all 0.3s ease; }
.hamburger-menu.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger-menu.active span:nth-child(2) { opacity: 0; }
.hamburger-menu.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
.mobile-menu-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.7); z-index: 1001; }
.mobile-menu-overlay.active { display: block; }
.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;
}