:root{--header-offset:122px;--primary:#113B7A;--secondary:#1D5FD1;--btn-gradient: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;}*{box-sizing:border-box;}body{padding-top:var(--header-offset);margin:0;font-family:Arial,Helvetica,sans-serif;background-color:var(--deep-navy);color:var(--text-main);}.site-header{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;box-shadow:0 4px 20px rgba(0,0,0,0.5);background-color:var(--deep-navy);}.header-top{box-sizing:border-box;height:68px;min-height:68px;display:flex;align-items:center;overflow:hidden;background-color:var(--primary);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:24px;padding-right:24px;}.logo{display:inline-flex;align-items:center;font-size:26px;font-weight:800;color:var(--gold);text-decoration:none;letter-spacing:0.5px;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:15px;font-weight:700;text-decoration:none;cursor:pointer;transition:transform 0.2s ease,box-shadow 0.2s ease;white-space:nowrap;border:none;line-height:1.2;}.btn-login{background:transparent;color:var(--text-main);border:1px solid var(--glow);}.btn-login:hover{background:rgba(79,168,255,0.15);}.btn-register{background:var(--btn-gradient);color:#ffffff;box-shadow:0 2px 10px rgba(43,115,246,0.4);}.btn-register:hover{transform:translateY(-2px);box-shadow:0 4px 16px rgba(43,115,246,0.6);}.mobile-nav-buttons{box-sizing:border-box;display:none;min-height:48px;}.hamburger-menu{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:40px;height:40px;padding:0;background:transparent;border:none;cursor:pointer;z-index:1002;}.hamburger-menu span{display:block;width:24px;height:2.5px;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(7.5px) rotate(45deg);}.hamburger-menu.active span:nth-child(2){opacity:0;}.hamburger-menu.active span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg);}.main-nav{box-sizing:border-box;height:52px;min-height:52px;display:flex;align-items:center;overflow:hidden;background-color:var(--secondary);width:100%;border-top:1px solid var(--border-color);}.nav-container{box-sizing:border-box;height:100%;max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;gap:4px;}.nav-link{display:inline-block;padding:8px 14px;color:var(--text-main);text-decoration:none;font-size:14px;font-weight:600;white-space:nowrap;border-radius:4px;transition:background-color 0.2s ease,color 0.2s ease;}.nav-link:hover{background-color:rgba(255,255,255,0.12);color:var(--gold);}.nav-link.active{color:var(--gold);background-color:rgba(0,0,0,0.2);}.nav-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,0.6);z-index:999;opacity:0;transition:opacity 0.3s ease;}.nav-overlay.active{display:block;opacity:1;}.site-footer{background-color:var(--card-bg);color:var(--text-main);border-top:3px solid var(--gold);}.footer-container{max-width:1200px;margin:0 auto;padding:0 24px;}.footer-top{padding:40px 0 24px;}.footer-top-row{margin-bottom:20px;}.footer-top-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}.footer-col{min-width:0;}.footer-about{display:flex;flex-direction:column;gap:14px;}.footer-logo{display:inline-block;font-size:24px;font-weight:800;color:var(--gold);text-decoration:none;letter-spacing:0.5px;}.footer-description{font-size:14px;line-height:1.7;color:var(--text-secondary);margin:0;word-wrap:break-word;overflow-wrap:break-word;}.footer-heading{font-size:16px;font-weight:700;color:var(--gold);margin:0 0 16px;padding-bottom:8px;border-bottom:1px solid var(--divider);}.footer-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}.footer-nav li{margin:0;}.footer-nav a{color:var(--text-secondary);text-decoration:none;font-size:14px;transition:color 0.2s ease;}.footer-nav a:hover{color:var(--glow);text-decoration:underline;}.footer-slot-anchor-inner{min-height:0;}.footer-mid{padding:10px 0;}.footer-mid-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:10px 0;}.footer-bottom{border-top:1px solid var(--divider);padding:20px 0;text-align:center;}.footer-copyright{margin:0;font-size:13px;color:var(--text-secondary);}@media (max-width:768px){:root{--header-offset:110px;}body{overflow-x:hidden;}.header-top{height:60px !important;min-height:60px !important;}.header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px;position:relative;justify-content:center;}.hamburger-menu{display:flex;position:absolute;left:15px;top:50%;transform:translateY(-50%);}.logo{flex:1 !important;display:flex !important;justify-content:center !important;align-items:center !important;max-width:calc(100% - 100px);font-size:22px;}.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;width:100%;max-width:100%;box-sizing:border-box;padding-left:15px;padding-right:15px;overflow:hidden;gap:10px;flex-wrap:nowrap;background-color:var(--deep-navy);border-bottom:1px solid var(--divider);padding-top:6px;padding-bottom:6px;}.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 !important;min-height:48px !important;display:none;position:fixed;top:0;left:0;width:100%;max-width:100%;flex-direction:column;justify-content:flex-start;align-items:stretch;overflow-y:auto;padding-top:var(--header-offset);transform:translateX(-100%);transition:transform 0.3s ease;z-index:998;background-color:var(--primary);border-top:none;}.main-nav.active{display:block;transform:translateX(0);}.nav-container{width:100%;max-width:none;height:auto;padding:10px 15px;flex-direction:column;justify-content:flex-start;align-items:stretch;gap:2px;}.nav-link{display:block;padding:12px 16px;font-size:15px;border-bottom:1px solid var(--divider);border-radius:0;}.nav-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,0.6);z-index:997;opacity:0;transition:opacity 0.3s ease;}.nav-overlay.active{display:block;opacity:1;}.footer-top-grid{grid-template-columns:1fr;gap:28px;}.footer-mid-grid{grid-template-columns:1fr;gap:12px;}.footer-container{padding:0 16px;}.footer-top{padding:28px 0 16px;}.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;
}