:root { --header-offset: 166px; --color-primary: #C61F1F; --color-secondary: #E53030; --color-card-bg: #2A1212; --color-bg: #140C0C; --color-text-main: #FFF1E8; --color-border: #6A1E1E; --color-gold: #F3C54D; --color-deep-red: #7E0D0D; }
body { padding-top: var(--header-offset); margin: 0; font-family: 'Roboto', 'Segoe UI', Arial, sans-serif; background-color: var(--color-bg); color: var(--color-text-main); }
.site-header { position: fixed; top: 0; left: 0; width: 100%; min-height: 120px; background-color: var(--color-bg); box-shadow: 0 2px 10px rgba(0, 0, 0, 0.7); z-index: 1000; border-bottom: 2px solid var(--color-gold); }
.header-top { background: linear-gradient(135deg, #1a0a0a 0%, var(--color-deep-red) 100%); width: 100%; border-bottom: 1px solid var(--color-border); }
.header-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 10px 25px; gap: 20px; }
.logo { font-size: 2.2rem; font-weight: 900; color: var(--color-gold); text-decoration: none; letter-spacing: 1px; text-transform: uppercase; font-family: 'Poppins', 'Arial Black', sans-serif; text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5); }
.logo:hover { color: #ffd700; text-decoration: none; }
.desktop-nav-buttons { display: flex; gap: 10px; }
.btn { display: inline-block; padding: 10px 20px; border-radius: 50px; text-decoration: none; color: var(--color-text-main); background: linear-gradient(180deg, #FFB04A 0%, #D86A14 100%); border: none; font-weight: 700; font-size: 0.95rem; cursor: pointer; text-align: center; transition: all 0.3s ease; box-shadow: 0 3px 6px rgba(0, 0, 0, 0.3); }
.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4); color: #fff; text-decoration: none; }
.btn-register { background: linear-gradient(180deg, #FFB04A 0%, #D86A14 100%); }
.btn-register:hover { background: linear-gradient(180deg, #e89a30 0%, #c55a10 100%); }
.btn-download { background: linear-gradient(180deg, #FFD700 0%, #FFA500 100%); color: #1a1a1a; }
.btn-download:hover { background: linear-gradient(180deg, #FFC800 0%, #FF8C00 100%); color: #1a1a1a; }
.main-nav { background-color: var(--color-bg); width: 100%; display: flex; justify-content: center; border-top: 1px solid var(--color-border); }
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; justify-content: center; width: 100%; }
.nav-menu { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: row; flex-wrap: wrap; justify-content: center; gap: 4px; }
.nav-menu li { margin: 0; padding: 0; }
.nav-menu li a { display: inline-block; padding: 12px 16px; color: var(--color-text-main); text-decoration: none; font-weight: 600; font-size: 1rem; transition: color 0.3s ease; border-bottom: 2px solid transparent; }
.nav-menu li a:hover { color: var(--color-gold); text-decoration: none; border-bottom: 2px solid var(--color-gold); }
.hamburger-menu, .mobile-nav-buttons { display: none; }
.mobile-menu-overlay { display: none; }
.site-footer { background-color: var(--color-card-bg); border-top: 3px solid var(--color-gold); padding-top: 40px; }
.footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; padding: 0 30px 30px; }
.footer-logo { font-size: 1.8rem; font-weight: 900; color: var(--color-gold); text-decoration: none; display: block; margin-bottom: 12px; text-transform: uppercase; font-family: 'Poppins', 'Arial Black', sans-serif; }
.footer-desc { color: #d4c8bc; line-height: 1.7; font-size: 0.9rem; }
.footer-title { font-size: 1.1rem; color: var(--color-gold); margin: 8px 0 12px; text-transform: uppercase; letter-spacing: 1px; font-weight: 700; border-bottom: 2px solid var(--color-border); padding-bottom: 8px; }
.footer-nav ul { list-style: none; padding: 0; margin: 0; }
.footer-nav li { margin-bottom: 10px; }
.footer-nav li a { color: #d4c8bc; text-decoration: none; transition: color 0.3s ease; font-size: 0.9rem; }
.footer-nav li a:hover { color: var(--color-gold); text-decoration: none; padding-left: 5px; transition: all 0.3s ease; }
.footer-bottom { background-color: #100808; padding: 18px 20px; text-align: center; border-top: 1px solid #390f0f; }
.footer-bottom p { color: #aaa; margin: 5px 0; font-size: 0.9rem; }
.footer-policy { color: var(--color-gold); font-weight: 600; letter-spacing: 1px; }
@media (max-width: 768px) {
  :root { --header-offset: 146px; }
  .header-container { width: 100%; max-width: none; padding: 10px 15px; justify-content: center; position: relative; }
  .header-top { background: var(--color-bg); border-bottom: 1px solid var(--color-border); }
  .logo { font-size: 1.6rem; flex: 0 0 auto; }
  .desktop-nav-buttons { display: none; }
  .main-nav { display: none; flex-direction: column; position: fixed; top: 0; left: 0; width: 80%; max-width: 320px; height: 100%; overflow-y: auto; z-index: 1002; transition: transform 0.3s ease; transform: translateX(-100%); background-color: #1a0707; box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5); padding-top: 60px; border-right: 2px solid var(--color-gold); }
  .main-nav.active { display: flex; transform: translateX(0); }
  .nav-container { width: 100%; max-width: none; display: flex; flex-direction: column; align-items: flex-start; }
  .nav-menu { flex-direction: column; width: 100%; }
  .nav-menu li { width: 100%; }
  .nav-menu li a { display: block; padding: 14px 20px; border-bottom: 1px solid #2d0a0a; width: 100%; text-align: left; }
  .hamburger-menu { display: flex; flex-direction: column; gap: 5px; width: 34px; height: 34px; cursor: pointer; padding: 4px; position: absolute; left: 15px; top: 50%; transform: translateY(-50%); z-index: 1001; }
  .hamburger-menu span { display: block; width: 25px; height: 3px; background-color: var(--color-gold); border-radius: 3px; transition: all 0.3s ease; }
  .hamburger-menu.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
  .hamburger-menu.active span:nth-child(2) { opacity: 0; transform: scale(0); }
  .hamburger-menu.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }
  .mobile-menu-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.8); z-index: 999; transition: opacity 0.3s ease; }
  .mobile-menu-overlay.active { display: block; }
  .mobile-nav-buttons { display: flex; flex-direction: row; width: 100%; background-color: #1a0707; padding: 8px 15px; gap: 8px; justify-content: center; border-bottom: 2px solid var(--color-gold); }
  .mobile-nav-buttons .btn { flex: 1; max-width: 160px; padding: 10px 14px; font-size: 0.85rem; }
  .footer-container { grid-template-columns: 1fr; text-align: center; }
  .footer-nav ul { padding: 0; }
  .footer-logo { font-size: 1.6rem; }
  .footer-desc { max-width: 90%; margin-left: auto; margin-right: auto; }
  .footer-title { border-bottom: none; position: relative; }
  .footer-title:after { content: ''; display: block; width: 45px; height: 3px; background-color: var(--color-gold); margin: 10px auto 0; }
  .page-content img { max-width: 100% !important; height: auto !important; display: block; }
  .page-content { overflow-x: hidden; max-width: 100%; }
  body { overflow-x: hidden; }
}
@media (min-width: 769px) and (max-width: 1024px) {
  .nav-menu li a { padding: 12px 12px; font-size: 0.95rem; }
  .header-container { padding: 10px 20px; }
}
/* 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;
}