:root{--primary:#017439;--primary-dark:#015c2e;--primary-light:#e6f4ed;--white:#ffffff;--black:#111111;--text:#333333;--btn:#C30808;--btn-text:#FFFF00;--header-offset:122px;--shadow:0 4px 16px rgba(0,0,0,0.12)}body{margin:0;padding:0;font-family:'Segoe UI',Tahoma,Arial,sans-serif;background:var(--white);color:var(--text);padding-top:var(--header-offset);overflow-x:hidden}.site-header{position:fixed;top:0;left:0;width:100%;background:var(--white);z-index:1000;box-shadow:var(--shadow);border-bottom:3px solid var(--primary)}.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:18px 24px;min-height:68px;box-sizing:border-box}.logo{display:inline-block;font-size:2rem;font-weight:900;color:var(--white);text-decoration:none;letter-spacing:-0.5px;text-shadow:0 2px 4px rgba(0,0,0,0.2);white-space:nowrap;transition:color 0.3s}.logo:hover{color:#ffd700}.desktop-nav-buttons{display:flex;align-items:center;gap:10px}.main-nav{background:var(--primary);width:100%;display:flex;border-top:1px solid rgba(255,255,255,0.15)}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:10px 20px;width:100%;box-sizing:border-box}.nav-container a{color:var(--white);text-decoration:none;font-size:1rem;font-weight:600;padding:8px 14px;border-radius:4px;transition:background 0.3s,color 0.3s}.nav-container a:hover,.nav-container a.active{background:var(--white);color:var(--primary)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 24px;border-radius:6px;text-decoration:none;font-weight:700;font-size:0.9rem;border:2px solid transparent;transition:all 0.3s;min-height:44px;box-sizing:border-box}.btn-login{background:var(--btn);color:var(--btn-text)}.btn-login:hover{background:#e60f0f;box-shadow:0 4px 12px rgba(195,8,8,0.4)}.btn-register{background:var(--btn);color:var(--btn-text)}.btn-register:hover{background:#e60f0f;box-shadow:0 4px 12px rgba(195,8,8,0.4)}.mobile-nav-buttons{display:none}.hamburger-menu{display:none}.mobile-menu-overlay{display:none}.site-footer{background:var(--primary-dark);color:var(--white);font-size:0.9rem}.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1.2fr 1.2fr;gap:24px;padding:48px 24px 24px}.footer-brand{display:flex;flex-direction:column}.footer-logo{font-size:1.8rem;font-weight:900;color:var(--white);text-decoration:none;letter-spacing:-0.5px}.footer-desc{line-height:1.7;margin-top:14px;color:#d0e8dc}.footer-certifications{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}.cert-badge{background:rgba(255,255,255,0.15);padding:6px 12px;border-radius:20px;font-size:0.9rem;font-weight:600}.footer-title{color:#ffd700;font-size:1rem;font-weight:700;margin-bottom:16px;text-transform:uppercase;letter-spacing:1px}.footer-nav{display:flex;flex-direction:column;gap:10px}.footer-nav a{color:var(--white);text-decoration:none;transition:color 0.3s,padding-left 0.3s;padding-left:0}.footer-nav a:hover{color:#ffd700;padding-left:6px}.footer-contact-list{list-style:none;padding:0;margin:0;line-height:1.9}.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);text-align:center;padding:20px 24px}.footer-copyright{margin:0;color:var(--white);font-size:1rem}.footer-disclaimer{color:#d0e8dc;font-size:0.85rem;margin-top:10px}.page-content{max-width:1200px;margin:0 auto;padding:16px 24px}.page-content img{max-width:100%;height:auto}@media (max-width:768px){:root{--header-offset:110px}body{padding-top:var(--header-offset)}.site-header{position:fixed;top:0;width:100%;background:var(--white);z-index:1000;box-shadow:var(--shadow);border-bottom:2px solid var(--primary)}.header-top{width:100%}.header-container{width:100%;max-width:none;padding:10px 15px;min-height:60px;display:flex;justify-content:space-between;align-items:center}.logo{display:inline-block;background:#0174392f;padding:4px 8px;border-radius:6px}.desktop-nav-buttons{display:none}.main-nav{display:none;flex-direction:column;position:fixed;top:0;left:0;width:75%;height:auto;max-height:78vh;background:var(--primary-dark);z-index:1002;padding:20px;box-sizing:border-box;border-radius:0 0 8px 0;transform:translateX(-100%);transition:transform 0.3s ease;overflow-y:auto}.main-nav.active{display:flex;transform:translateX(0)}.nav-container{flex-direction:column;align-items:flex-start;padding:0;width:100%}.nav-container a{color:var(--white);font-size:1rem;padding:12px 10px;width:100%;border-radius:4px;text-decoration:none;border-bottom:1px solid rgba(255,255,255,0.05)}.nav-container a:hover,.nav-container a.active{background:var(--white);color:var(--primary);padding-left:16px}.mobile-nav-buttons{display:flex;justify-content:center;gap:12px;background:var(--white);padding:10px 15px;border-top:1px solid #e0e0e0;position:relative;z-index:1000;margin-top:0}.mobile-nav-buttons .btn{padding:10px 20px;font-size:0.9rem}.hamburger-menu{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:40px;height:40px;cursor:pointer;background:transparent;border:none;z-index:1005;position:relative;padding:0;order:0}.hamburger-menu span{display:block;width:22px;height:2px;background:var(--white);transition:all 0.3s;border-radius:2px}.hamburger-menu.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.mobile-menu-overlay{display:block;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.7);z-index:999;opacity:0;visibility:hidden;transition:opacity 0.3s}.mobile-menu-overlay.active{opacity:1;visibility:visible}.page-content{padding:10px 15px;overflow-x:hidden}.page-content img{max-width:100% !important;height:auto !important;display:block}.footer-container{grid-template-columns:1fr;padding:32px 16px 16px;text-align:center}.footer-brand{align-items:center}.footer-certifications{justify-content:center}.footer-links{display:flex;flex-direction:column;align-items:center}.footer-nav{gap:8px}.footer-nav a{padding:6px 0}.footer-bottom{padding:16px}}
/* 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;
}