:root{--primary:#26A9E0;--secondary:#FFFFFF;--dark:#0a2233;--accent:#EA7C07;--text:#000000;--text-light:#333333;--header-offset:122px;}
*{box-sizing:border-box;}
body{padding-top:var(--header-offset);margin:0;font-family:'Segoe UI',Arial,sans-serif;}
.site-header{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;background:#FFFFFF;box-shadow:0 4px 16px rgba(0,0,0,0.15);border-bottom:1px solid rgba(38,169,224,0.25);}
.header-top{box-sizing:border-box;min-height:68px;height:68px;display:flex;align-items:center;overflow:hidden;background:linear-gradient(135deg,#0d3b52 0%,#26A9E0 100%);width:100%;}
.header-container{box-sizing:border-box;width:100%;height:100%;max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding-left:30px;padding-right:30px;}
.logo{display:block;font-size:30px;font-weight:800;letter-spacing:1px;color:#FFFFFF;text-decoration:none;text-transform:lowercase;text-shadow:0 2px 6px rgba(0,0,0,0.35);}
.logo:hover,.logo:focus{color:#FFFFFF;}
.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;}
.mobile-nav-buttons{box-sizing:border-box;display:none;min-height:48px;width:100%;max-width:100%;}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 22px;border-radius:8px;font-size:14px;font-weight:700;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:all 0.25s ease;white-space:nowrap;line-height:1.2;}
.btn:hover,.btn:focus{text-decoration:none;transform:translateY(-1px);}
.btn-login{background:#EA7C07;color:#FFFFFF;border-color:#EA7C07;box-shadow:0 3px 10px rgba(234,124,7,0.4);}
.btn-login:hover,.btn-login:focus{background:#c96800;border-color:#c96800;color:#FFFFFF;}
.btn-register{background:#26A9E0;color:#0a2233;border-color:#FFFFFF;box-shadow:0 3px 10px rgba(38,169,224,0.45);}
.btn-register:hover,.btn-register:focus{background:#0d8cbf;border-color:#FFFFFF;color:#FFFFFF;}
.main-nav{box-sizing:border-box;min-height:52px;height:52px;display:flex;align-items:center;overflow:hidden;background:#FFFFFF;width:100%;border-top:1px solid rgba(38,169,224,0.2);}
.nav-container{box-sizing:border-box;height:100%;width:100%;max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;position:relative;}
.nav-list{display:flex;flex-direction:row;justify-content:center;align-items:center;list-style:none;margin:0;padding:0;gap:4px;flex-wrap:nowrap;}
.nav-link{display:block;padding:8px 14px;font-size:14px;font-weight:600;color:#0a2233;text-decoration:none;border-radius:6px;transition:all 0.2s ease;white-space:nowrap;}
.nav-link:hover,.nav-link:focus{background:rgba(38,169,224,0.12);color:#0d8cbf;text-decoration:none;}
.nav-link.active{color:#FFFFFF;background:#26A9E0;}
.hamburger-menu{display:none;background:transparent;border:none;padding:8px;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px;z-index:1001;}
.hamburger-menu span{display:block;width:26px;height:3px;background:#0a2233;border-radius:2px;transition:all 0.3s ease;}
.hamburger-menu.active span:nth-child(1){transform:translateY(8px) rotate(45deg);}
.hamburger-menu.active span:nth-child(2){opacity:0;}
.hamburger-menu.active span:nth-child(3){transform:translateY(-8px) rotate(-45deg);}
.nav-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.55);z-index:999;opacity:0;transition:opacity 0.3s ease;}
.nav-overlay.active{display:block;opacity:1;}
body.no-scroll{overflow:hidden;}
.site-footer{background:#0a2233;color:#FFFFFF;padding:50px 0 0;margin-top:40px;font-family:'Segoe UI',Arial,sans-serif;}
.footer-container{max-width:1200px;margin:0 auto;padding:0 20px;box-sizing:border-box;}
.footer-top-row{max-width:1200px;margin:0 auto 20px;padding:0 20px;box-sizing:border-box;}
.footer-top-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:36px;}
.footer-col{display:block;min-width:0;}
.footer-logo{display:inline-block;font-size:26px;font-weight:800;color:#26A9E0;text-decoration:none;text-transform:lowercase;margin-bottom:14px;letter-spacing:1px;}
.footer-logo:hover,.footer-logo:focus{color:#FFFFFF;text-decoration:none;}
.footer-description{font-size:14px;line-height:1.7;color:rgba(255,255,255,0.82);margin:0 0 14px;word-wrap:break-word;overflow-wrap:break-word;}
.footer-heading{font-size:16px;font-weight:700;color:#26A9E0;margin:0 0 14px;position:relative;padding-bottom:8px;}
.footer-heading::after{content:'';position:absolute;left:0;bottom:0;width:36px;height:2px;background:#EA7C07;}
.footer-nav{list-style:none;margin:0;padding:0;}
.footer-nav li{margin-bottom:9px;}
.footer-nav a{font-size:14px;color:rgba(255,255,255,0.82);text-decoration:none;transition:color 0.2s ease;display:inline-block;}
.footer-nav a:hover,.footer-nav a:focus{color:#26A9E0;text-decoration:none;}
.footer-mid-area{margin-bottom:28px;}
.footer-mid-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.footer-slot-anchor-inner{display:block;min-height:1px;width:100%;}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.15);padding:20px 0 24px;text-align:center;}
.footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,0.7);}
@media (max-width:768px){
:root{--header-offset:110px;}
.header-top{min-height:60px !important;height:60px !important;}
.header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px;position:relative;}
.logo{flex:1 !important;display:flex !important;justify-content:center !important;align-items:center !important;font-size:24px;}
.logo img{display:block !important;max-width:100%;height:auto;max-height:56px !important;}
.desktop-nav-buttons{display:none !important;}
.mobile-nav-buttons{display:flex !important;align-items:center;justify-content:center;min-height:48px;width:100%;max-width:100%;box-sizing:border-box;padding:6px 15px;overflow:hidden;gap:10px;flex-wrap:nowrap;}
.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{min-height:48px !important;height:48px !important;display:none;position:fixed;top:var(--header-offset);left:0;right:0;width:100%;max-width:100%;transform:translateX(-100%);transition:transform 0.3s ease;z-index:1001;box-shadow:0 6px 20px rgba(0,0,0,0.2);overflow-y:auto;overflow-x:hidden;}
.main-nav.active{display:block;transform:translateX(0);}
.main-nav .nav-container{width:100%;max-width:none;height:auto;min-height:48px;padding:10px 15px;flex-direction:column;justify-content:flex-start;align-items:stretch;background:#FFFFFF;}
.hamburger-menu{display:flex;position:relative;z-index:1002;}
.nav-list{display:none;}
.main-nav.active .nav-list{display:flex;flex-direction:column;width:100%;gap:2px;}
.nav-link{width:100%;padding:12px 14px;font-size:15px;border-radius:6px;}
.footer-top-grid{grid-template-columns:1fr;gap:26px;}
.footer-mid-grid{grid-template-columns:1fr;gap:14px;}
.site-footer{padding-top:36px;}
.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 (max-width:480px){
.mobile-nav-buttons .btn{font-size:12px;padding:8px 8px;}
.nav-link{font-size:14px;}
}
/* 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;
}