:root {   --primary: #113B7A;   --secondary: #1D5FD1;   --card-bg: #10233F;   --text-main: #F3F8FF;   --text-secondary: #AFC4E8;   --border-color: #244D84;   --glow: #4FA8FF;   --gold: #F2C14E;   --divider: #1B3357;   --deep-navy: #08162B;   --button-grad: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);   --dark-header-bg: #0A1D3A;   --dark-nav-bg: #0D2347;   --header-offset: 120px; } body {   padding-top: var(--header-offset);   margin: 0;   font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; } .site-header {   position: fixed;   top: 0;   left: 0;   width: 100%;   z-index: 1000;   box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);   background-color: var(--dark-header-bg); } .header-top {   background: linear-gradient(135deg, #0A1D3A 0%, #113B7A 50%, #0A1D3A 100%);   width: 100%;   border-bottom: 1px solid var(--border-color); } .header-container {   max-width: 1200px;   margin: 0 auto;   display: flex;   justify-content: space-between;   align-items: center;   padding: 0 40px;   min-height: 68px; } .logo {   font-size: 32px;   font-weight: 900;   color: var(--gold);   text-decoration: none;   letter-spacing: 2px;   text-shadow: 0 0 15px rgba(242, 193, 78, 0.5);   transition: all 0.3s ease;   display: block; } .logo:hover {   transform: scale(1.05);   text-shadow: 0 0 25px rgba(242, 193, 78, 0.8); } .desktop-nav-buttons {   display: flex;   gap: 12px;   align-items: center; } .btn {   display: inline-flex;   align-items: center;   justify-content: center;   text-decoration: none;   border-radius: 8px;   padding: 10px 20px;   font-weight: 700;   font-size: 14px;   transition: all 0.3s ease;   white-space: nowrap;   cursor: pointer;   border: none; } .btn-download {   background: linear-gradient(135deg, var(--gold), #d4a032);   color: var(--deep-navy);   box-shadow: 0 4px 15px rgba(242, 193, 78, 0.4); } .btn-download:hover {   transform: translateY(-3px);   box-shadow: 0 6px 20px rgba(242, 193, 78, 0.6); } .btn-login {   background: linear-gradient(135deg, var(--secondary), var(--primary));   color: var(--text-main);   box-shadow: 0 4px 15px rgba(29, 95, 209, 0.4); } .btn-login:hover {   transform: translateY(-3px);   box-shadow: 0 6px 20px rgba(29, 95, 209, 0.6); } .btn-register {   background: var(--button-grad);   color: var(--text-main);   box-shadow: 0 4px 15px rgba(43, 115, 246, 0.5); } .btn-register:hover {   transform: translateY(-3px);   box-shadow: 0 6px 25px rgba(43, 115, 246, 0.7); } .main-nav {   background-color: var(--dark-nav-bg);   width: 100%;   display: flex;   border-bottom: 1px solid rgba(36, 77, 132, 0.5); } .nav-container {   max-width: 1200px;   margin: 0 auto;   display: flex;   flex-direction: row;   justify-content: center;   align-items: center;   gap: 5px;   padding: 0 20px;   width: 100%;   min-height: 52px; } .nav-link {   color: var(--text-main);   text-decoration: none;   font-weight: 600;   font-size: 15px;   padding: 8px 14px;   border-radius: 6px;   transition: all 0.3s ease;   position: relative; } .nav-link:hover {   color: var(--gold);   background: rgba(242, 193, 78, 0.1); } .nav-link.active {   color: var(--gold); } .nav-link.active::after {   content: '';   position: absolute;   bottom: 2px;   left: 50%;   transform: translateX(-50%);   width: 20px;   height: 2px;   background: var(--gold);   border-radius: 2px; } .mobile-nav-buttons {   display: none; } .hamburger-menu {   display: none; } .mobile-menu-overlay {   display: none; } @media (max-width: 768px) {   :root {     --header-offset: 110px;   }   .header-container {     width: 100%;     max-width: none;     padding: 0 15px;     min-height: 60px;     justify-content: center;   }   .logo {     font-size: 26px;     text-align: center;     flex: 1;   }   .desktop-nav-buttons {     display: none;   }   .main-nav {     display: none;     flex-direction: column;     position: fixed;     top: 0;     left: 0;     width: 280px;     height: 100vh;     background-color: var(--deep-navy);     z-index: 1003;     transform: translateX(-100%);     transition: transform 0.3s ease;     box-shadow: 2px 0 15px rgba(0, 0, 0, 0.4);     overflow-y: auto;     padding-top: 80px;   }   .main-nav.active {     display: flex;     transform: translateX(0);   }   .nav-container {     flex-direction: column;     align-items: flex-start;     padding: 10px 20px;     gap: 5px;     width: 100%;     max-width: none;     margin: 0;   }   .nav-link {     color: var(--text-main);     padding: 12px 15px;     font-size: 16px;     width: 100%;     border-bottom: 1px solid rgba(36, 77, 132, 0.3);   }   .nav-link:hover {     background: rgba(242, 193, 78, 0.15);     color: var(--gold);   }   .nav-link.active {     color: var(--gold);     background: rgba(242, 193, 78, 0.1);   }   .mobile-nav-buttons {     display: flex;     justify-content: center;     align-items: center;     gap: 8px;     padding: 10px 15px;     background-color: var(--dark-header-bg);     margin-top: 108px;     border-bottom: 1px solid var(--border-color);     min-height: 48px;     flex-wrap: nowrap;     overflow-x: auto;   }   .mobile-nav-buttons .btn {     padding: 8px 12px;     font-size: 13px;     white-space: nowrap;   }   .hamburger-menu {     display: flex;     flex-direction: column;     justify-content: center;     align-items: center;     gap: 5px;     width: 44px;     height: 44px;     background: transparent;     border: none;     cursor: pointer;     padding: 0;     position: fixed;     top: 8px;     left: 15px;     z-index: 1004;   }   .hamburger-menu span {     display: block;     width: 24px;     height: 2px;     background-color: var(--gold);     border-radius: 2px;     transition: all 0.3s ease;   }   .hamburger-menu.active span:nth-child(1) {     transform: rotate(45deg) translate(5px, 5px);   }   .hamburger-menu.active span:nth-child(2) {     opacity: 0;   }   .hamburger-menu.active span:nth-child(3) {     transform: rotate(-45deg) translate(5px, -5px);   }   .mobile-menu-overlay {     display: none;     position: fixed;     top: 0;     left: 0;     width: 100%;     height: 100vh;     background-color: rgba(0, 0, 0, 0.6);     z-index: 1002;     opacity: 0;     transition: opacity 0.3s ease;   }   .mobile-menu-overlay.active {     display: block;     opacity: 1;   }   body.no-scroll {     overflow: hidden;   }   .footer-container {     flex-direction: column;     gap: 30px;     padding: 40px 15px;     width: 100%;     max-width: none;   }   .footer-column {     width: 100%;     text-align: left;   }   .site-footer {     margin-bottom: 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) {   .header-container {     padding: 0 30px;   }   .nav-container {     padding: 0 10px;   }   .nav-link {     padding: 8px 10px;     font-size: 14px;   } } .site-footer {   background-color: var(--deep-navy);   color: var(--text-main);   position: relative;   z-index: 10;   border-top: 2px solid var(--gold); } .footer-container {   max-width: 1200px;   margin: 0 auto;   display: flex;   justify-content: space-between;   flex-wrap: wrap;   gap: 30px;   padding: 60px 40px 40px; } .footer-column {   flex: 1;   min-width: 200px; } .footer-brand {   flex: 1.5; } .footer-logo {   font-size: 32px;   font-weight: 900;   color: var(--gold);   text-decoration: none;   text-shadow: 0 0 20px rgba(242, 193, 78, 0.4);   display: inline-block;   margin-bottom: 15px; } .footer-description {   color: var(--text-secondary);   line-height: 1.8;   margin-bottom: 20px;   font-size: 14px; } .footer-age-badge {   display: inline-flex;   align-items: center;   justify-content: center;   border: 2px solid var(--gold);   color: var(--gold);   font-size: 18px;   font-weight: 900;   width: 45px;   height: 45px;   border-radius: 50%; } .footer-title {   color: var(--gold);   font-size: 18px;   font-weight: 700;   margin-bottom: 20px;   text-transform: uppercase;   letter-spacing: 1px; } .footer-nav {   list-style: none;   padding: 0;   margin: 0;   display: block; } .footer-nav li {   margin-bottom: 12px; } .footer-contacts {   list-style: none;   padding: 0;   margin: 0; } .footer-contacts li {   list-style: none; } .footer-contact-list {   list-style: none;   padding: 0;   margin: 0; } .footer-contact-list li {   margin-bottom: 12px;   color: var(--text-secondary);   font-size: 14px; } .footer-nav a {   color: var(--text-main);   text-decoration: none;   transition: color 0.3s ease;   font-size: 14px; } .footer-nav a:hover {   color: var(--gold);   text-decoration: underline; } .footer-bottom {   text-align: center;   padding: 20px;   border-top: 1px solid var(--divider);   background: rgba(0, 0, 0, 0.3); } .copyright-text {   color: var(--text-secondary);   font-size: 14px;   margin-bottom: 8px; } .footer-disclaimer {   color: var(--text-secondary);   font-size: 13px;   opacity: 0.8;   margin: 0; }
/* 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;
}