:root{--header-offset:122px;--primary:#113B7A;--secondary:#1D5FD1;--btn-bg:linear-gradient(180deg,#2B73F6 0%,#1144A6 100%);--card-bg:#10233F;--text-main:#F3F8FF;--text-secondary:#AFC4E8;--border:#244D84;--glow:#4FA8FF;--gold:#F2C14E;--divider:#1B3357;--deep-navy:#08162B}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:#08162B;box-shadow:0 8px 24px rgba(0,0,0,.5);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}.header-top{background:linear-gradient(135deg,#113B7A 0%,#1D5FD1 100%);width:100%}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;min-height:68px;padding:6px 24px;gap:16px}.logo{display:inline-block;font-size:2rem;font-weight:900;line-height:1.2;letter-spacing:2px;text-transform:uppercase;text-decoration:none;color:#F2C14E;font-family:system-ui,-apple-system,sans-serif}.logo:hover{color:#fff;text-shadow:0 0 12px #F2C14E}.desktop-nav-buttons{display:flex;align-items:center;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:10px 22px;border-radius:8px;font-weight:700;font-size:.9rem;text-decoration:none!important;text-transform:uppercase;letter-spacing:.6px;color:#fff;cursor:pointer;border:2px solid transparent;background:linear-gradient(180deg,#2B73F6 0%,#1144A6 100%);box-shadow:0 4px 16px rgba(43,115,246,.3);transition:all .3s ease}.btn-register{background:linear-gradient(180deg,#2B73F6 0%,#1144A6 100%)}.btn-register:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(43,115,246,.5);filter:brightness(1.1)}.btn-login{background:transparent;border-color:#F2C14E;color:#F2C14E}.btn-login:hover{background:#F2C14E;color:#08162B;transform:translateY(-1px);box-shadow:0 8px 24px rgba(242,193,78,.3)}.btn-primary{background:var(--btn-bg)}.main-nav{background:#10233F;width:100%;display:flex;position:static;transform:none;transition:none;border-top:1px solid #244D84;border-bottom:1px solid #08162B}.main-nav.active{display:flex;transform:none}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;width:100%;padding:0 20px;gap:4px;flex-wrap:wrap}.nav-link{display:inline-block;color:#F3F8FF;text-decoration:none;font-size:.83rem;font-weight:600;padding:10px 12px;margin:4px 2px;border-radius:6px;transition:all .25s ease;position:relative;text-transform:uppercase;letter-spacing:.4px}.nav-link:hover,.nav-link.active{color:#F2C14E;background:rgba(242,193,78,.08);text-shadow:0 0 8px rgba(242,193,78,.3)}.nav-link::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%) scaleX(0);width:70%;height:2px;background:#F2C14E;transition:transform .3s ease;border-radius:2px}.nav-link:hover::after,.nav-link.active::after{transform:translateX(-50%) scaleX(1)}.hamburger-menu{display:none}.mobile-menu-overlay{display:none}.mobile-nav-buttons{display:none}body{padding-top:var(--header-offset);margin:0;background:#f8fafc}.site-footer{background:#08162B;color:#AFC4E8;border-top:3px solid #1D5FD1;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.2fr 1fr 1.2fr;gap:40px;padding:40px 24px 32px}.footer-column{min-width:0}.footer-logo{margin-bottom:16px}.footer-logo a{font-size:1.8rem;font-weight:900;color:#F2C14E;text-decoration:none;letter-spacing:1px;text-shadow:0 0 10px rgba(242,193,78,.2);font-family:system-ui,sans-serif}.footer-logo a:hover{color:var(--text-main)}.footer-desc{font-size:.9rem;line-height:1.7;color:#AFC4E8;margin:0}.footer-title{color:#F2C14E;font-size:1rem;font-weight:700;text-transform:uppercase;letter-spacing:1px;margin:0 0 16px;position:relative;padding-bottom:8px}.footer-title::after{content:'';position:absolute;bottom:0;left:0;width:36px;height:2px;background:#1D5FD1;border-radius:2px}.footer-nav{list-style:none;padding:0;margin:0;display:grid;gap:12px}.footer-nav a{color:#AFC4E8;text-decoration:none;font-size:.9rem;transition:color .25s ease,padding-left .25s ease}.footer-nav a:hover{color:#F3F8FF;padding-left:6px}.footer-bottom{background:#05101f;padding:16px;text-align:center;border-top:1px solid #1B3357}.footer-bottom p{margin:0;color:#AFC4E8;font-size:.85rem}@media(max-width:768px){:root{--header-offset:110px}.header-top{background:linear-gradient(135deg,#113B7A 0%,#1D5FD1 100%)}.header-container{width:100%;max-width:none;min-height:60px;padding:6px 12px;display:flex;flex-wrap:nowrap;justify-content:center}.logo{display:block;font-size:1.7rem;order:1;margin-right:20px}.desktop-nav-buttons{display:none}.mobile-nav-buttons{display:flex;flex-direction:column;padding:4px 16px;gap:8px;background:#0d1f3c;border-top:1px solid #244D84;border-bottom:1px solid #244D84}.mobile-nav-buttons .btn{width:100%;min-height:44px;font-size:.95rem}main,.page-content{padding-top:10px}.main-nav{display:none;position:fixed;top:0;left:0;width:78%;height:100vh;background:#10233F;z-index:2000;transform:translateX(-100%);transition:transform .3s ease-in-out;border:none;border-right:2px solid #244D84;flex-direction:column;align-items:flex-start}.main-nav.active{display:flex!important;transform:translateX(0);overflow-y:auto}.nav-container{flex-direction:column;align-items:flex-start;justify-content:flex-start;width:100%;max-width:none;padding:24px 12px 60px;gap:2px}.nav-link{display:block;width:100%;text-align:left;padding:12px 16px;font-size:.9rem;border-bottom:1px solid #1B3357;margin:0;border-radius:0}.nav-link::after{display:none}.nav-link:hover{background:#1D5FD1;color:#F3F8FF}.hamburger-menu{display:flex;flex-direction:column;justify-content:center;align-items:center;width:44px;height:44px;background:transparent;border:none;cursor:pointer;padding:8px;position:absolute;top:8px;left:12px;z-index:3001;gap:5px;border-radius:6px;transition:background .3s ease}.hamburger-menu span{display:block;width:24px;height:2px;background:#F2C14E;border-radius:2px;transition:transform .3s ease,opacity .3s ease}.hamburger-menu:hover{background:rgba(242,193,78,.1)}.hamburger-menu.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.mobile-menu-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(4,10,20,.6);z-index:1999;backdrop-filter:none}.mobile-menu-overlay.active{display:block}.site-footer .footer-container{grid-template-columns:1fr;gap:28px;padding:32px 20px 20px}.footer-title{margin-bottom:12px}.footer-nav{grid-template-columns:1fr 1fr;gap:10px}.footer-bottom{margin-top: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}}
/* 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;
}