.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:#0a1530;box-shadow:0 4px 20px rgba(0,0,0,0.5);min-height:auto;display:block;border-bottom:2px solid #2B73F6}.header-top{background:linear-gradient(135deg,#08162B 0%,#10233F 100%);width:100%;border-bottom:1px solid #244D84}.header-container{max-width:1200px;margin:0 auto;padding:0 30px;display:flex;justify-content:space-between;align-items:center;min-height:68px;height:auto}.logo{color:#F3F8FF;font-size:26px;font-weight:800;text-decoration:none;letter-spacing:1px;text-transform:uppercase;padding:8px 0;display:block;line-height:1.2;font-style:italic;text-shadow:0 0 12px rgba(242,193,78,0.6);background:linear-gradient(180deg,#F2C14E 0%,#E0A92E 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.logo:hover{color:#F2C14E;text-decoration:none}.desktop-nav-buttons{display:flex;gap:14px;align-items:center;padding:10px 0}.btn{display:inline-block;padding:10px 22px;border-radius:6px;text-decoration:none;font-weight:700;transition:all 0.3s;font-size:14px;line-height:1.4;border:1px solid transparent;text-align:center;cursor:pointer}.btn:hover{text-decoration:none}.btn-register{background:linear-gradient(180deg,#2B73F6 0%,#1144A6 100%);color:#F3F8FF;border-color:#4FA8FF}.btn-register:hover{box-shadow:0 0 15px rgba(79,168,255,0.5);transform:translateY(-1px)}.btn-download{background:linear-gradient(180deg,#F2C14E 0%,#D4A234 100%);color:#08162B;border-color:#F2C14E}.btn-download:hover{box-shadow:0 0 15px rgba(242,193,78,0.5);transform:translateY(-1px)}.main-nav{background:linear-gradient(180deg,#10233F 0%,#0B1830 100%);width:100%;display:flex;justify-content:center;border-bottom:1px solid #1B3357;min-height:52px;align-items:center}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;flex-wrap:wrap}.nav-link{color:#AFC4E8;text-decoration:none;font-weight:600;font-size:15px;padding:16px 14px;transition:color 0.3s;display:block;line-height:1.2;text-align:center;white-space:nowrap}.nav-link:hover{color:#F3F8FF;text-decoration:none;background:rgba(43,115,246,0.1)}.nav-link.active{color:#F2C14E}.mobile-nav-buttons{display:none}.hamburger-menu{display:none}.mobile-menu-overlay{display:none}:root{--header-offset:122px}body{padding-top:var(--header-offset);margin:0;font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif}@media(max-width:768px){:root{--header-offset:0px}.header-top{min-height:60px}.header-container{width:100%;max-width:none;padding:0 15px;display:flex;justify-content:space-between;align-items:center;min-height:60px;position:relative}.logo{font-size:22px;order:2;flex:1;text-align:center;margin:0 auto}.desktop-nav-buttons{display:none}.main-nav{display:none;position:fixed;top:0;left:0;width:280px;height:100vh;background:linear-gradient(180deg,#08162B 0%,#10233F 100%);transform:translateX(-100%);transition:transform 0.3s ease;justify-content:flex-start;z-index:1001;overflow-y:auto;padding-top:60px}.main-nav.active{display:block;transform:translateX(0)}.nav-container{width:100%;max-width:none;display:flex;flex-direction:column;align-items:flex-start;padding:0}.nav-link{color:#AFC4E8;font-size:16px;padding:14px 24px;width:100%;box-sizing:border-box;border-bottom:1px solid #1B3357;white-space:normal}.nav-link:hover{background:#1D5FD1;color:#F3F8FF}.mobile-nav-buttons{display:flex;justify-content:space-around;align-items:center;gap:10px;width:100%;padding:10px 20px;background:#10233F;border-bottom:1px solid #244D84;margin-top:0}.mobile-nav-buttons .btn{flex:1;text-align:center;min-height:44px;display:flex;align-items:center;justify-content:center}.hamburger-menu{display:block;position:fixed;bottom:20px;right:20px;width:55px;height:55px;background:linear-gradient(135deg,#2B73F6 0%,#1144A6 100%);border:none;border-radius:50%;cursor:pointer;z-index:2000;box-shadow:0 4px 15px rgba(43,115,246,0.5);border:2px solid #4FA8FF}.hamburger-menu span{display:block;width:25px;height:3px;background:#F3F8FF;margin:5px auto;transition:all 0.3s;border-radius:2px}.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)}.mobile-menu-overlay{display:none}.mobile-menu-overlay.active{display:block;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.7);z-index:1000}.site-footer{position:relative;z-index:5}.site-header{min-height:60px}.mobile-nav-buttons{position:relative}.page-content img{max-width:100% !important;height:auto !important;display:block}.page-content{overflow-x:hidden;max-width:100%}body{overflow-x:hidden;min-height:100vh}.mobile-nav-buttons{background:#10233F;position:static}.site-header{height:auto}.header-top,.main-nav{width:100%}.main-nav{top:300px}}@media(max-width:768px) and (min-width:321px){.mobile-nav-buttons{flex-direction:row}.main-nav{top:234px}}@media(min-width:769px){.hamburger-menu{display:none}.mobile-menu-overlay{display:none}.desktop-nav-buttons{display:flex}.main-nav{display:flex;transform:none}}@media(min-width:769px){.site-header{min-height:120px}.logo{font-size:28px}}body{background:#08162B}
/* 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;
}