:root{--primary:#017439;--primary-dark:#00522a;--primary-light:#008a43;--secondary:#ffffff;--accent:#C30808;--accent-2:#FFFF00;--font-main:'Segoe UI',Tahoma,Arial,sans-serif;--header-offset:190px;--header-offset-mobile:168px}*{margin:0;padding:0;box-sizing:border-box}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;display:flex;flex-direction:column;font-family:var(--font-main);box-shadow:0 4px 10px rgba(0,0,0,.12);background:var(--secondary)}.header-top{background:var(--primary-dark);width:100%}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:10px 25px;column-gap:20px}.logo{color:var(--secondary);font-size:30px;font-weight:800;text-decoration:none;letter-spacing:1px;line-height:1.2;display:inline-block;flex-shrink:0}.logo:hover{opacity:.9}.desktop-nav-buttons{display:flex;gap:10px;align-items:center;margin-left:auto}.mobile-nav-buttons{display:none}.btn{display:inline-block;padding:10px 20px;border-radius:6px;text-decoration:none;font-size:15px;font-weight:600;text-align:center;border:none;cursor:pointer;white-space:nowrap;transition:transform .2s,box-shadow .2s,opacity .2s}.btn:hover{opacity:.95;transform:translateY(-1px)}.btn-login{background:var(--accent);color:var(--accent-2);box-shadow:0 2px 6px rgba(0,0,0,.15)}.btn-register{background:var(--accent);color:var(--accent-2);box-shadow:0 2px 6px rgba(0,0,0,.15)}.main-nav{background:var(--primary);width:100%;display:flex;position:static;flex-direction:row;transform:none;transition:transform .3s ease}.nav-container{width:100%;max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:8px 20px;flex-wrap:wrap}.nav-container a{color:var(--secondary);text-decoration:none;font-size:15px;font-weight:500;padding:8px 12px;margin:2px 4px;border-radius:4px;opacity:.92;transition:background .25s,opacity .25s}.nav-container a:hover{background:var(--primary-dark);opacity:1}.nav-container .active{background:var(--primary-dark);opacity:1}.hamburger-menu{display:none;background:none;border:none;width:40px;height:40px;cursor:pointer;padding:9px;flex-direction:column;justify-content:space-around;z-index:1002;align-items:center}.hamburger-menu span{display:block;width:25px;height:2px;background:var(--primary);border-radius:2px;transition:transform .3s ease,opacity .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)}.mobile-menu-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.55);z-index:998;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}body{font-family:'Segoe UI',Tahoma,Arial,sans-serif;padding-top:var(--header-offset);background:var(--secondary);color:#333}.site-footer{font-family:var(--font-main)}.site-footer .footer-main{background:#f3f4f6;display:flex;flex-direction:row;justify-content:center;padding:20px 20px 0}.footer-container{list-style:none;display:flex;flex-wrap:wrap;flex-direction:row;max-width:1200px;column-gap:30px;justify-content:space-between;width:100%}.footer-brand{flex:1.2;min-width:200px;margin-bottom:20px}.footer-brand .footer-logo{font-size:30px;font-weight:800;color:var(--primary);text-decoration:none}.footer-desc{font-size:14px;color:#4a5568;margin-top:8px;line-height:1.6}.footer-nav{flex:1;min-width:150px;list-style:none;padding:0}.footer-nav h3{font-size:16px;color:var(--primary-dark);font-weight:700;margin-bottom:12px}.footer-nav ul{list-style:none;padding:0;margin:0}.footer-nav ul li{margin-bottom:8px}.footer-nav ul li a{font-size:14px;color:#4a5568;text-decoration:none;transition:color .2s,padding-left .2s}.footer-nav ul li a:hover{color:var(--primary)}.footer-disclaimer{flex:2;min-width:250px;padding-top:8px;font-size:12px;color:#718096;background:#e2e8f0;border-left:4px solid var(--primary);padding-left:12px;margin-right:20px;line-height:1.6;width:100%}.footer-bottom{background:#e2e8f0;text-align:center;padding:12px 10px;color:#4a5568;font-size:14px}.footer-bottom p{margin:0}.site-footer .footer-bottom a{text-decoration:none;color:#4a5568}.page-content img{max-width:100%;height:auto;display:block}.page-content{overflow-x:hidden;max-width:100%}@media(max-width:768px){:root{--header-offset:168px}body{overflow-x:hidden;padding-top:var(--header-offset)}.page-content img{max-width:100%!important;height:auto!important;display:block}.page-content{overflow-x:hidden;max-width:100%}body{overflow-x:hidden}.main-nav{display:none;position:fixed;top:0;left:0;height:100vh;width:100%;max-width:320px;background:var(--primary);z-index:1001;flex-direction:column;justify-content:flex-start;align-items:flex-start;transform:translateX(-100%);transition:transform .3s ease;box-shadow:4px 0 12px rgba(0,0,0,.15);padding-top:20px}.main-nav.active{display:flex;transform:translateX(0)}.main-nav.active .nav-container{width:100%;height:100%;display:flex;flex-direction:column;overflow-y:auto}.main-nav .nav-container{padding:16px}.main-nav .nav-container a{font-size:17px;font-weight:600;color:var(--secondary);padding:11px 15px;margin-bottom:5px;border-radius:6px}.main-nav .nav-container a.active{background:var(--primary-light)}.header-top{background:var(--primary-dark);position:fixed;top:0;left:0;width:100%;z-index:999}.header-top::after{content:'';position:absolute;bottom:-40px;left:0;width:100%;background:var(--primary);height:40px}.header-container{width:100%;max-width:none;padding:8px 15px;justify-content:center;flex-wrap:wrap}.logo{font-size:26px;margin:0 auto}.desktop-nav-buttons{display:none}.mobile-nav-buttons{display:flex;justify-content:center;align-items:center;gap:8px;background:var(--primary);position:fixed;top:68px;left:0;width:100%;z-index:999;padding:6px 10px;flex-direction:row;flex-wrap:wrap}.mobile-nav-buttons .btn{min-width:130px;text-align:center;padding:10px 14px;font-size:15px}.mobile-nav-buttons{margin-top:0}.hamburger-menu{display:flex;position:fixed;top:14px;left:15px;z-index:1001;width:40px;height:40px}.mobile-menu-overlay.active{display:block;background:rgba(0,0,0,.55);opacity:1;visibility:visible}.site-header .mobile-menu-overlay.active{display:block}.header-container{display:flex}.mobile-nav-buttons{top:62px}.footer-container{margin:0 auto;max-width:100%;display:grid;grid-template-columns:1fr;gap:15px}.footer-nav{min-width:100%}}@media(max-width:480px){.header-container{padding:8px 10px}.logo{font-size:22px}.mobile-nav-buttons{gap:4px;padding:6px}.mobile-nav-buttons .btn{flex:1;min-width:0;font-size:13px;padding:9px 8px}.btn-register{padding:8px 12px}.btn-login{padding:8px 12px}.nav-container a{font-size:15px;padding:8px}}
}
/* 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;
}