.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;box-shadow:0 4px 20px rgba(0,0,0,0.15);font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif}.header-top{background:#1a5276;width:100%}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:10px 25px;min-height:48px}.logo{font-size:2rem;font-weight:800;color:#ffffff;text-decoration:none;letter-spacing:2px;line-height:1.2;display:inline-block;white-space:nowrap}.logo:hover{color:#f39c12;text-decoration:none}.desktop-nav-buttons{display:flex;gap:10px;align-items:center}.btn{display:inline-block;padding:10px 24px;border-radius:30px;font-size:0.9rem;line-height:1.4;font-weight:700;text-decoration:none;cursor:pointer;transition:all 0.3s ease;border:2px solid transparent;box-shadow:0 4px 10px rgba(0,0,0,0.15);color:#ffffff;text-align:center;background-color:#26A9E0}.btn:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,0.25);color:#ffffff;text-decoration:none}.btn-login{background-color:#EA7C07;border-color:transparent}.btn-login:hover{background-color:#e67e22;color:#ffffff}.btn-register{background:linear-gradient(135deg,#26A9E0,#1a8ab0);border-color:transparent}.btn-register:hover{background:linear-gradient(135deg,#1a8ab0,#12799e);color:#ffffff}.btn-download{background-color:#2ecc71;border-color:transparent}.btn-download:hover{background-color:#27ae60;color:#ffffff}.main-nav{width:100%;display:block;background:#ffffff;border-top:3px solid #26A9E0}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;min-height:48px;flex-wrap:wrap;gap:4px}.nav-link{color:#2c3e50;text-decoration:none;font-size:0.9rem;line-height:1.4;font-weight:600;padding:8px 12px;border-radius:4px;transition:color 0.3s ease,background-color 0.3s ease;display:block}.nav-link:hover{color:#26A9E0;background-color:#f0f9fe;text-decoration:none}.nav-link.active{color:#26A9E0;background-color:#e0f2fd;font-weight:700}.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;background-color:#FFFFFF}.site-footer{background-color:#0a2636;color:#ffffff;padding:0;font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif}.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:35px;padding:60px 25px 40px}.footer-column{display:flex;flex-direction:column;align-items:flex-start}.footer-brand{display:flex;flex-direction:column;align-items:flex-start}.footer-logo{font-size:2.2rem;font-weight:800;color:#ffffff;text-decoration:none;letter-spacing:2px;display:inline-block;margin-bottom:18px;line-height:1.2}.footer-logo:hover{color:#26A9E0;text-decoration:none}.footer-description{font-size:0.9rem;color:#bdc3c7;line-height:1.6;margin:0 0 20px;max-width:320px}.footer-certificates{display:flex;gap:10px;flex-wrap:wrap}.cert-badge{display:inline-block;padding:4px 14px;background-color:#1a3d55;border:1px solid #2f5c7a;border-radius:4px;font-size:0.8rem;color:#26A9E0;font-weight:700}.footer-heading{font-size:1.1rem;font-weight:700;color:#ffffff;margin:0 0 20px;position:relative;padding-bottom:10px}.footer-heading::after{content:'';position:absolute;left:0;bottom:0;width:35px;height:3px;background:#26A9E0;border-radius:2px}.footer-nav{display:flex;flex-direction:column;gap:12px;width:100%}.footer-link{color:#95a5a6;text-decoration:none;font-size:0.9rem;line-height:1.5;transition:color 0.3s ease,padding-left 0.3s ease}.footer-link:hover{color:#26A9E0;text-decoration:none;padding-left:5px}.footer-contact{display:flex;flex-direction:column;gap:15px}.footer-contact-item{display:flex;flex-direction:column;gap:4px}.footer-contact-label{font-size:0.8rem;font-weight:600;color:#7f8c8d;text-transform:uppercase;letter-spacing:1px}.footer-contact-value{color:#ecf0f1;font-size:0.95rem;font-weight:600;text-decoration:none;transition:color 0.3s ease}.footer-contact-value:hover{color:#26A9E0;text-decoration:none}.affiliate-notice{margin-top:5px}.footer-contact-note{font-size:0.8rem;color:#6c7a8a;line-height:1.5;margin:0}.footer-bottom{background-color:#071a25;padding:18px 0;border-top-width:1px;border-top-style:solid;border-top-color:#1a3d55}.footer-bottom-container{max-width:1200px;margin:0 auto;display:flex;justify-content:center;align-items:center;padding:0 25px}.footer-copyright{font-size:0.9rem;color:#95a5a6;margin:0;text-align:center}.page-content{max-width:100%;overflow-x:hidden}@media(max-width:768px){:root{--header-offset:158px}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000}.header-top{background:#1a5276}.header-container{width:100%;max-width:none;padding:12px 15px;min-height:48px;gap:10px;justify-content:space-between}.logo{font-size:1.5rem;color:#ffffff;display:block}.desktop-nav-buttons{display:flex;gap:8px}.desktop-nav-buttons .btn{padding:8px 14px;font-size:0.75rem;white-space:nowrap}.mobile-nav-buttons{display:none;width:100%;background:#1d3f57;border-top:2px solid #26A9E0;padding:10px 12px;position:relative;z-index:1000}.mobile-nav-buttons.active{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}.mobile-buttons-container{width:100%;display:flex;justify-content:center;gap:8px;flex-wrap:wrap}.mobile-buttons-container .btn{flex:1;min-width:100px;padding:8px 12px;font-size:0.75rem;text-align:center;margin:0}.main-nav{display:none;position:fixed;top:60px;left:0;width:280px;height:calc(100vh - 60px);background:#ffffff;flex-direction:column;box-shadow:4px 0 20px rgba(0,0,0,0.15);z-index:1002;transform:translateX(-100%);transition:transform 0.3s ease;overflow-y:auto;border-top:3px solid #26A9E0}.main-nav.active{display:flex;transform:translateX(0)}.nav-container{display:flex;flex-direction:column;width:100%;padding:15px 10px;align-items:flex-start;justify-content:flex-start;gap:2px}.nav-link{color:#2c3e50;font-size:0.95rem;width:100%;padding:10px 14px;border-left:3px solid transparent;border-bottom:1px solid #f0f0f0}.nav-link:hover{background:#e0f2fd;color:#26A9E0;border-left-color:#26A9E0}.nav-link.active{background:#e0f2fd;color:#26A9E0;border-left-color:#26A9E0;font-weight:700}.hamburger-menu{display:flex;flex-direction:column;justify-content:center;align-items:center;width:44px;height:44px;background:transparent;border:2px solid #ffffff;border-radius:8px;cursor:pointer;padding:10px;gap:5px;flex:0 0 44px;position:relative;z-index:1003;background-color:rgba(255,255,255,0.1);transition:background-color 0.3s ease}.hamburger-line{display:block;width:100%;height:3px;background-color:#ffffff;border-radius:3px;transition:transform 0.3s ease,opacity 0.3s ease}.hamburger-menu.active .hamburger-line:nth-child(1){transform:translateY(4px) rotate(45deg)}.hamburger-menu.active .hamburger-line:nth-child(2){opacity:0}.hamburger-menu.active .hamburger-line:nth-child(3){transform:translateY(-4px) rotate(-45deg)}.mobile-menu-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,0.6);z-index:1001;transition:opacity 0.3s ease;opacity:0}.mobile-menu-overlay.active{display:block;opacity:1}.page-content img{max-width:100% !important;height:auto !important;display:block}.page-content{overflow-x:hidden;max-width:100%}body{overflow-x:hidden}.site-footer{padding:0}.footer-container{grid-template-columns:1fr;gap:30px;padding:40px 20px 30px}.footer-column{align-items:flex-start}.footer-heading{margin-bottom:15px}.footer-nav{width:100%}.footer-brand,.footer-links-column,.footer-contact{align-items:flex-start}.footer-logo{font-size:1.8rem;font-weight:800;color:#ffffff;display:inline-block;text-decoration:none;letter-spacing:2px}.footer-logo:hover{color:#26A9E0}.footer-description{font-size:0.85rem;color:#bdc3c7;line-height:1.6}.footer-bottom{padding:15px 0}.footer-bottom-container{padding:0 15px}.footer-copyright{font-size:0.85rem}.footer-contact-note{font-size:0.8rem}.affiliate-notice{width:100%}}@media(min-width:769px){.hamburger-menu{display:none!important}.mobile-menu-overlay{display:none!important}}
/* 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;
}