:root{--primary:#113B7A;--secondary:#1D5FD1;--btn-grad:linear-gradient(180deg,#2B73F6 0%,#1144A6 100%);--card-bg:#10233F;--text-main:#F3F8FF;--text-secondary:#AFC4E8;--border-color:#244D84;--glow:#4FA8FF;--gold:#F2C14E;--divider:#1B3357;--deep-navy:#08162B;--header-offset:122px}*{box-sizing:border-box}body{margin:0;padding-top:var(--header-offset);background-color:var(--deep-navy);color:var(--text-main);font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif}.site-header{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;background-color:var(--deep-navy);box-shadow:0 4px 20px rgba(0,0,0,0.6);border-bottom:1px solid var(--border-color)}.header-top{height:68px;background-color:var(--primary);display:flex;align-items:center;overflow:hidden;width:100%}.header-container{width:100%;height:100%;max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding-left:24px;padding-right:24px;position:relative}.logo{display:inline-block;font-size:26px;font-weight:800;color:var(--gold);text-decoration:none;letter-spacing:1px;text-transform:none;white-space:nowrap;line-height:1;text-shadow:0 0 12px rgba(242,193,78,0.4)}.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;text-decoration:none;border:none;cursor:pointer;font-weight:700;border-radius:8px;padding:10px 22px;font-size:14px;line-height:1.2;transition:transform 0.2s ease,box-shadow 0.2s ease,filter 0.2s ease;white-space:nowrap}.btn-login{background-color:transparent;color:var(--gold);border:2px solid var(--gold)}.btn-login:hover{background-color:rgba(242,193,78,0.15);box-shadow:0 0 14px rgba(242,193,78,0.4)}.btn-register{background:var(--btn-grad);color:#ffffff;box-shadow:0 4px 14px rgba(17,68,166,0.5)}.btn-register:hover{filter:brightness(1.1);box-shadow:0 0 18px rgba(79,168,255,0.6);transform:translateY(-1px)}.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-color);border-radius:8px;cursor:pointer;padding:0;z-index:1001}.hamburger-menu span{display:block;width:22px;height:2px;background-color:var(--text-main);border-radius:2px;transition:transform 0.3s ease,opacity 0.3s 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)}.mobile-nav-buttons{display:none;min-height:48px}.main-nav{height:52px;background-color:var(--deep-navy);display:flex;align-items:center;overflow:hidden;width:100%;border-top:1px solid var(--divider)}.nav-container{width:100%;height:100%;max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 24px}.nav-menu{list-style:none;margin:0;padding:0;display:flex;flex-direction:row;justify-content:center;align-items:center;gap:4px;flex-wrap:wrap}.nav-link{display:inline-block;text-decoration:none;color:var(--text-secondary);font-size:14px;font-weight:600;padding:6px 10px;border-radius:6px;line-height:1.2;transition:color 0.2s ease,background-color 0.2s ease;white-space:nowrap}.nav-link:hover,.nav-link.active{color:var(--gold);background-color:rgba(242,193,78,0.1)}.site-footer{background-color:var(--card-bg);color:var(--text-main);border-top:1px solid var(--border-color);margin-top:40px}.footer-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}.footer-top{padding:40px 0 24px}.footer-top-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:start}.footer-col{min-width:0}.footer-about .footer-logo{display:inline-block;font-size:24px;font-weight:800;color:var(--gold);text-decoration:none;letter-spacing:1px;margin-bottom:14px;text-shadow:0 0 12px rgba(242,193,78,0.4)}.footer-description{color:var(--text-secondary);font-size:14px;line-height:1.7;margin:0;word-wrap:break-word;overflow-wrap:break-word}.footer-col-title{color:var(--text-main);font-size:16px;font-weight:700;margin:0 0 14px;padding-bottom:8px;border-bottom:1px solid var(--divider)}.footer-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.footer-nav li{line-height:1.4}.footer-nav a{text-decoration:none;color:var(--text-secondary);font-size:14px;transition:color 0.2s ease;word-wrap:break-word;overflow-wrap:break-word}.footer-nav a:hover{color:var(--gold)}.footer-middle{padding:8px 0 24px}.footer-middle-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.footer-bottom{border-top:1px solid var(--divider);padding:18px 0;background-color:var(--deep-navy)}.footer-copyright{margin:0;color:var(--text-secondary);font-size:13px;text-align:center;line-height:1.6}.footer-slot-anchor-inner{width:100%}@media (max-width:768px){:root{--header-offset:110px}.header-top{height:60px}.header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px}.logo{flex:1!important;display:flex!important;justify-content:center!important;align-items:center!important;font-size:22px}.logo img{display:block!important;max-width:100%;height:auto;max-height:56px!important}.desktop-nav-buttons{display:none!important}.hamburger-menu{display:flex}.mobile-nav-buttons{display:flex!important;align-items:center;justify-content:center;width:100%;max-width:100%;box-sizing:border-box;padding-left:15px;padding-right:15px;overflow:hidden;gap:10px;flex-wrap:nowrap;min-height:48px;background-color:var(--primary)}.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{height:48px;min-height:48px!important;display:none;position:fixed;top:108px;left:0;right:0;width:100%;background-color:var(--deep-navy);border-top:none;transform:translateX(-100%);transition:transform 0.3s ease;z-index:999;overflow-y:auto;max-height:calc(100vh - 108px)}.main-nav.active{display:block;transform:translateX(0)}.nav-container{width:100%;max-width:none;padding:10px 15px;flex-direction:column;justify-content:flex-start;align-items:stretch;height:auto}.nav-menu{flex-direction:column;align-items:stretch;gap:4px;width:100%;flex-wrap:nowrap}.nav-link{display:block;padding:12px 16px;font-size:15px;border-radius:8px;border-bottom:1px solid var(--divider)}.footer-top{padding:28px 0 16px}.footer-top-grid{grid-template-columns:1fr;gap:24px}.footer-middle-grid{grid-template-columns:1fr 1fr;gap:16px}.footer-container{padding:0 15px}.footer-bottom{padding:14px 0}.footer-copyright{font-size:12px}.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;
}