.site-header{position:fixed;top:0;width:100%;z-index:1000;background:#0d2a52;box-shadow:0 4px 20px rgba(0,0,0,.4);font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif}.header-top{background:linear-gradient(135deg,#08162B 0%,#113B7A 100%);width:100%;border-bottom:2px solid #1D5FD1}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:10px 30px;flex-wrap:wrap}.logo{display:block;font-size:28px;font-weight:800;text-decoration:none;color:#F2C14E;letter-spacing:1px;text-shadow:0 0 15px rgba(242,193,78,.3)}.desktop-nav-buttons{display:flex;align-items:center;gap:10px}.btn{display:inline-block;padding:10px 22px;border-radius:50px;font-size:14px;font-weight:700;text-decoration:none;text-align:center;transition:all .3s ease;cursor:pointer;line-height:1.4;color:#F3F8FF;position:relative;overflow:hidden;letter-spacing:.5px}.btn:active{transform:translateY(2px)}.btn-register,.btn-login{background:linear-gradient(180deg,#2B73F6 0%,#1144A6 100%);box-shadow:0 4px 15px rgba(43,115,246,.4)}.btn-register:hover,.btn-login:hover{color:#fff;box-shadow:0 4px 15px rgba(242,193,78,.4);animation:btnGlow 2s infinite}.btn-mobile{display:block;font-size:13px;padding:9px 18px;flex:1;max-width:140px;margin:0 5px}.main-nav{background:linear-gradient(90deg,#0d2a52 0%,#113B7A 100%);width:100%;display:flex;min-height:42px;border-bottom:2px solid #244D84}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:4px 20px;gap:2px;flex-wrap:wrap}.nav-link{color:#AFC4E8;text-decoration:none;font-size:14px;font-weight:500;padding:8px 10px;transition:all .3s ease;border-radius:4px;white-space:nowrap;display:inline-block}.nav-link:hover,.nav-link.active{color:#F2C14E;background:rgba(242,193,78,.15)}.mobile-nav-buttons{display:none}.mobile-menu-overlay{display:none}.hamburger-menu{display:none}@media(max-width:768px){:root{--header-offset:146px}body{padding-top:var(--header-offset)}.header-container{width:100%;max-width:none;padding:8px 15px;min-height:54px}.logo{font-size:24px}.desktop-nav-buttons{display:none}.mobile-nav-buttons{display:flex;width:100%;max-width:none;padding:8px 15px 10px;justify-content:space-between;gap:8px;background:#08162B;z-index:999}.mobile-nav-buttons .btn-register,.mobile-nav-buttons .btn-login{flex:1;max-width:none;font-size:14px;padding:10px 10px}.main-nav{position:fixed;top:0;left:0;width:78%;max-width:320px;height:100vh;background:#113B7A;display:none;flex-direction:column;justify-content:center;transform:translateX(-100%);transition:transform .35s ease;z-index:1002;overflow-y:auto;border-right:2px solid #1D5FD1;border-bottom:none}.main-nav.active{display:block;transform:translateX(0)}.nav-container{display:flex;flex-direction:column;gap:8px;padding:30px 20px;justify-content:center;align-items:flex-start;margin:0;width:100%}.nav-link{width:100%;text-align:left;font-size:16px;padding:10px 10px;color:#AFC4E8;border-bottom:1px solid rgba(244,148,196,.1)}.mobile-menu-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.6);display:none;z-index:1001}.mobile-menu-overlay.active{display:block}.hamburger-menu{display:block;position:absolute;top:12px;left:15px;width:36px;height:36px;background:#1D5FD1;border:none;border-radius:8px;cursor:pointer;z-index:1003;display:flex;justify-content:center;align-items:center;gap:5px;padding:5px;transition:all .3s ease}.hamburger-menu span{display:block;width:22px;height:3px;background:#F3F8FF;border-radius:2px;transition:all .3s ease;margin:0 auto}.hamburger-menu span+span{margin-top:4px}.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)}body.no-scroll{overflow:hidden}}.site-footer{background:linear-gradient(180deg,#08162B 0%,#113B7A 100%);border-top:2px solid #1D5FD1;padding:20px 0 0}.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1.2fr;gap:40px;padding:30px 25px;color:#AFC4E8;text-align:left}.footer-brand .footer-logo{display:inline-block;font-size:26px;font-weight:800;color:#F2C14E;text-decoration:none;text-shadow:0 0 10px rgba(242,193,78,.3);margin-bottom:10px}.footer-description{font-size:14px;color:#AFC4E8;line-height:1.7;margin:12px 0;white-space:normal}.footer-certificates{display:flex;gap:12px;margin-top:15px}.certificate-badge{border:1px solid #244D84;font-size:12px;font-weight:600;color:#F3F8FF;border-radius:20px;padding:5px 18px;letter-spacing:.5px;background:#10233F;display:inline-block}.footer-column h4.footer-title{color:#F2C14E;font-size:16px;margin-bottom:15px;font-weight:700;letter-spacing:.5px;padding-bottom:8px;border-bottom:2px solid #1B3357;position:relative}.footer-column h4.footer-title::after{content:'';position:absolute;bottom:-2px;left:0;width:40px;height:2px;background:linear-gradient(90deg,#F2C14E,#ffdd88)}.footer-column a{display:block;color:#AFC4E8;text-decoration:none;font-size:13px;margin-bottom:10px;padding:2px 0;transition:color .3s ease}.footer-column a:hover{color:#F2C14E;padding-left:5px}.footer-bottom{border-top:1px solid #1B3357;background:#050d1a;padding:10px 0;text-align:center;margin-top:20px}.copyright-text{color:#AFC4E8;font-size:13px;margin:0;white-space:nowrap}@media(max-width:768px){.site-header{min-height:auto}.mobile-nav-buttons .btn{margin:0}.footer-container{grid-template-columns:1fr;gap:25px;padding:20px 15px;text-align:center}.footer-column{text-align:center}.footer-column a{padding:4px 0;margin-bottom:8px}.footer-logo,.footer-description{margin-left:auto;margin-right:auto}.footer-bottom{padding:8px 0 8px}.footer-container{padding:20px 15px 0}.footer-bottom{margin-top:15px;padding:8px 15px}.footer-column a{font-size:13px}.copyright-text{font-size:12px}}@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;padding-top:var(--header-offset)}}.site-header{position:fixed;top:0;left:0}.hamburger-menu{top:8px;left:8px}.logo{color:#F2C14E}.btn-register,.btn-login,.btn:link,.btn:visited{color:#F3F8FF;text-decoration:none}.btn-mobile{font-size:13px;max-width:130px;min-width:100px}.footer-column a,.footer-brand .footer-logo,.footer-column a:link,.footer-column a:visited{text-decoration:none}@keyframes btnGlow{0%,100%{box-shadow:0 0 0 1px rgba(242,193,78,.3),0 0 20px rgba(242,193,78,.2)}50%{box-shadow:0 0 0 2px rgba(242,193,78,.6),0 0 40px rgba(242,193,78,.4)}}@media(max-width:768px){.footer-column a{font-size:14px}.footer-column{text-align:center}.hamburger-menu{top:8px;left:8px}.logo{font-size:24px}.main-nav{padding-top:80px}.main-nav .nav-link{color:#F3F8FF;font-size:15px;padding:10px 10px;border-bottom:1px solid rgba(255,255,255,.08)!important}.main-nav .nav-link:hover{background:#1D5FD1;color:#F2C14E}}
/* 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;
}