:root{--primary:#113B7A;--secondary:#1D5FD1;--card-bg:#10233F;--text-main:#F3F8FF;--text-secondary:#AFC4E8;--border:#244D84;--glow:#4FA8FF;--gold:#F2C14E;--divider:#1B3357;--deep-navy:#08162B;--btn-gradient:linear-gradient(180deg,#2B73F6 0%,#1144A6 100%);--header-offset:122px;}*{box-sizing:border-box;}body{margin:0;padding-top:var(--header-offset);font-family:'Segoe UI',Roboto,Arial,sans-serif;background:var(--deep-navy);color:var(--text-main);}
.site-header{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;background:var(--deep-navy);box-shadow:0 4px 20px rgba(0,0,0,.6);border-bottom:1px solid var(--border);}
.header-top{height:68px;min-height:68px;display:flex;align-items:center;overflow:hidden;background:linear-gradient(90deg,#08162B 0%,#113B7A 100%);width:100%;}
.header-container{width:100%;max-width:1200px;margin:0 auto;height:100%;display:flex;justify-content:space-between;align-items:center;padding-left:24px;padding-right:24px;}
.logo{color:var(--gold);font-size:26px;font-weight:800;letter-spacing:1px;text-decoration:none;text-transform:lowercase;display:inline-block;white-space:nowrap;}
.logo img{display:block;max-height:60px;height:auto;width:auto;max-width:280px;object-fit:contain;}
.desktop-nav-buttons{display:flex;gap:12px;align-items:center;}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 22px;border-radius:6px;font-size:14px;font-weight:700;text-decoration:none;border:none;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;white-space:nowrap;}
.btn-login{background:transparent;color:var(--text-main);border:2px solid var(--glow);}
.btn-login:hover{background:rgba(79,168,255,.15);}
.btn-register{background:var(--btn-gradient);color:#fff;box-shadow:0 4px 14px rgba(43,115,246,.4);}
.btn-register:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(43,115,246,.6);}
.mobile-nav-buttons{display:none;min-height:48px;}
.hamburger-menu{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:44px;height:44px;background:transparent;border:1px solid var(--border);border-radius:6px;cursor:pointer;padding:0;z-index:1001;}
.hamburger-menu span{display:block;width:22px;height:2px;background:var(--gold);border-radius:2px;transition:all .3s ease;}
.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);}
.main-nav{height:52px;min-height:52px;display:flex;align-items:center;overflow:hidden;background:var(--primary);width:100%;border-top:1px solid var(--border);}
.nav-container{width:100%;max-width:1200px;margin:0 auto;height:100%;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;gap:4px;}
.nav-link{color:var(--text-main);text-decoration:none;font-size:14px;font-weight:600;padding:8px 14px;border-radius:4px;transition:background .2s ease,color .2s ease;white-space:nowrap;}
.nav-link:hover,.nav-link.active{background:var(--secondary);color:#fff;}
.nav-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.7);z-index:999;}
.nav-overlay.active{display:block;}
.site-footer{background:linear-gradient(180deg,#08162B 0%,#10233F 100%);color:var(--text-main);border-top:1px solid var(--border);margin-top:40px;}
.footer-container{max-width:1200px;margin:0 auto;padding:0 24px;}
.footer-top{padding:48px 0 32px;}
.footer-top-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.footer-col{min-width:0;}
.footer-about{grid-column:span 1;}
.footer-logo{display:inline-block;color:var(--gold);font-size:24px;font-weight:800;text-decoration:none;margin-bottom:14px;}
.footer-description{color:var(--text-secondary);font-size:14px;line-height:1.7;margin:0 0 16px;word-wrap:break-word;overflow-wrap:break-word;}
.footer-heading{color:var(--gold);font-size:16px;font-weight:700;margin:0 0 16px;}
.footer-nav{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.footer-nav a{color:var(--text-secondary);text-decoration:none;font-size:14px;transition:color .2s ease;display:inline-block;}
.footer-nav a:hover{color:var(--glow);}
.footer-dynamic-col{min-height:1px;}
.footer-slot-anchor,.footer-slot-anchor-inner,.footer-slot-mid,.footer-slot-bottom,.footer-mid-cell{min-height:1px;}
.footer-mid{padding:24px 0;border-top:1px solid var(--divider);}
.footer-mid-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:16px;}
.footer-mid-cell{min-height:1px;}
.footer-bottom{border-top:1px solid var(--divider);padding:20px 0;text-align:center;}
.footer-bottom p{color:var(--text-secondary);font-size:13px;margin:0;}
@media(max-width:768px){
:root{--header-offset:110px;}
.header-top{height:60px !important;min-height:60px !important;}
.header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px;position:relative;}
.logo{flex:0 0 auto;font-size:22px;}
.logo img{max-height:56px !important;}
.hamburger-menu{display:flex;order:-1;margin-right:10px;}
.desktop-nav-buttons{display:none !important;}
.mobile-nav-buttons{display:flex !important;align-items:center;justify-content:center;width:100%;max-width:100%;box-sizing:border-box;padding:6px 15px;overflow:hidden;gap:10px;flex-wrap:nowrap;background:var(--deep-navy);}
.mobile-nav-buttons .btn{flex:1;min-width:0;max-width:calc(50% - 5px);box-sizing:border-box;padding:8px 12px;font-size:13px;white-space:normal;word-wrap:break-word;overflow-wrap:break-word;}
.main-nav{display:none;position:fixed;top:0;left:0;width:80%;max-width:300px;height:100vh !important;min-height:100vh !important;flex-direction:column;justify-content:flex-start;align-items:stretch;background:var(--primary);z-index:1001;transform:translateX(-100%);transition:transform .3s ease;padding-top:80px;overflow-y:auto;border-right:2px solid var(--gold);}
.main-nav.active{display:flex !important;transform:translateX(0);}
.nav-container{width:100%;max-width:none;flex-direction:column;justify-content:flex-start;align-items:stretch;padding:10px 16px;gap:2px;height:auto;}
.nav-link{padding:14px 16px;font-size:15px;border-radius:6px;border-bottom:1px solid var(--divider);white-space:normal;}
.nav-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.7);z-index:1000;}
.nav-overlay.active{display:block;}
.footer-top-grid{grid-template-columns:1fr;gap:28px;}
.footer-mid-grid{grid-template-columns:repeat(2,1fr);}
.footer-top{padding:32px 0 24px;}
.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;
}