:root{--primary:#E53935;--secondary:#FF5A4F;--header-offset:122px;--max-width:1200px}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:#ffffff;box-shadow:0 2px 10px rgba(0,0,0,0.15);font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif}.header-top{width:100%;background:linear-gradient(135deg,#E53935 0%,#c62828 100%);min-height:68px;display:flex;align-items:center}.header-container{max-width:var(--max-width);margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding-left:20px;padding-right:20px;width:100%;box-sizing:border-box}.logo{display:inline-block;color:#ffffff;font-size:1.6rem;font-weight:800;text-decoration:none;letter-spacing:0.5px;text-shadow:0 1px 3px rgba(0,0,0,0.2);white-space:nowrap}.logo:hover{color:#fff;opacity:0.9}.desktop-nav-buttons{display:flex;gap:10px;align-items:center}.btn{display:inline-block;padding:8px 20px;border-radius:25px;text-decoration:none;font-size:0.9rem;font-weight:600;text-align:center;transition:opacity 0.3s,transform 0.2s;min-width:90px;color:#ffffff;background:linear-gradient(180deg,#FF5A4F 0%,#E53935 100%);border:none;box-shadow:0 2px 6px rgba(0,0,0,0.15)}.btn:hover{opacity:0.9;transform:translateY(-2px);color:#fff;text-decoration:none}.btn-login{background:#333333;background:linear-gradient(135deg,#2c2c2c 0%,#1f1f1f 100%);box-shadow:0 2px 6px rgba(0,0,0,0.25)}.main-nav{width:100%;background:#ffffff;border-bottom:2px solid #f0f0f0;display:flex;align-items:center;min-height:52px}.nav-container{max-width:var(--max-width);margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;width:100%;padding:0 20px;box-sizing:border-box;flex-wrap:nowrap;gap:2px}.nav-link{display:inline-block;padding:8px 12px;text-decoration:none;color:#333333;font-size:0.92rem;font-weight:500;line-height:1.4;white-space:nowrap;border-radius:4px;transition:color 0.2s,background-color 0.2s;border-bottom:2px solid transparent}.nav-link:hover{color:var(--primary);text-decoration:none;background-color:rgba(229,57,53,0.06)}.mobile-nav-buttons{display:none}.hamburger-menu{display:none;position:fixed;top:12px;left:15px;width:44px;height:44px;background:transparent;border:none;cursor:pointer;z-index:1002;padding:8px;box-sizing:border-box;flex-direction:column;justify-content:space-around;align-items:center}.hamburger-menu span{display:block;width:100%;height:3px;background:#ffffff;border-radius:2px;transition:all 0.3s 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}.nav-close{display:none}.site-footer{background:#1a1a1a;color:#cccccc;padding:40px 0 20px;font-size:0.95rem;font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif}.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding:0 20px;align-items:start}.footer-about .footer-logo{display:inline-block;color:#ffffff;font-size:1.4rem;font-weight:700;text-decoration:none;margin-bottom:15px;letter-spacing:0.5px}.footer-about .footer-desc{color:#cccccc;line-height:1.7;margin-top:10px}.footer-title{color:#ffffff;font-size:1.05rem;margin:0 0 15px;font-weight:600;text-transform:uppercase;letter-spacing:0.5px}.footer-nav{display:flex;flex-direction:column;gap:10px}.footer-nav a{color:#bbbbbb;text-decoration:none;transition:color 0.2s}.footer-nav a:hover{color:#ffffff;text-decoration:underline}.footer-bottom{border-top:1px solid #333333;margin-top:35px;padding:20px 20px 0;text-align:center}.footer-bottom .copyright{color:#888888;font-size:0.85rem;margin:0}body{padding-top:var(--header-offset);margin:0;background:#F5F7FA;color:#333333}body.no-scroll{overflow:hidden}@media(max-width:768px){:root{--header-offset:110px}.site-header{min-height:auto}.header-top{min-height:58px;padding-top:0}.header-container{width:100%;max-width:none;padding-left:50px;padding-right:15px;min-height:48px}.header-container .logo{font-size:1.25rem;text-align:center;flex:1;order:2;word-break:break-word}.desktop-nav-buttons{display:none}.mobile-nav-buttons{display:flex;width:100%;max-width:none;justify-content:center;align-items:center;gap:8px;background:#ffffff;border-bottom:1px solid #e0e0e0;padding:6px 10px;z-index:999}.mobile-nav-buttons .btn{flex:1;max-width:none;padding:6px 12px;font-size:0.85rem;min-width:80px;background:linear-gradient(180deg,#FF5A4F 0%,#E53935 100%)}.mobile-nav-buttons .btn-login{background:#333333;background:linear-gradient(135deg,#2c2c2c 0%,#1f1f1f 100%)}.main-nav{display:none;position:fixed;top:0;left:0;width:300px;height:100vh;background:#ffffff;flex-direction:column;align-items:flex-start;justify-content:flex-start;transform:translateX(-100%);transition:transform 0.3s ease;z-index:1002;box-shadow:2px 0 15px rgba(0,0,0,0.2);overflow-y:auto;padding-top:0}.main-nav.active{display:block;transform:translateX(0)}.nav-container{flex-direction:column;align-items:flex-start;padding:15px 10px;width:100%;flex:1}.nav-link{width:100%;padding:14px 15px;font-size:1rem;border-bottom:1px solid #f0f0f0;color:#333333;border-radius:0;white-space:normal;line-height:1.3}.nav-link:hover{background-color:#f5f5f5;color:var(--primary)}.nav-close{display:block;position:absolute;top:10px;right:15px;background:transparent;border:none;font-size:2rem;color:#333333;cursor:pointer;line-height:1;padding:5px 10px}.hamburger-menu{display:flex;background:rgba(0,0,0,0.1);backdrop-filter:none}.hamburger-menu span{background:#ffffff}.hamburger-menu.active span{background:#333333}.mobile-menu-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100vh;background:rgba(0,0,0,0.6);z-index:1001}.mobile-menu-overlay.active{display:block}.site-footer{background:#1a1a1a;padding:30px 0 20px}.footer-container{grid-template-columns:1fr;gap:25px;width:100%;max-width:none;padding-left:15px;padding-right:15px;box-sizing:border-box}.footer-bottom{padding-left:15px;padding-right:15px;margin-top:25px}.footer-desc,.footer-nav{font-size:0.9rem}.page-content img{max-width:100% !important;height:auto !important;display:block}.page-content{overflow-x:hidden;max-width:100%;box-sizing:border-box;padding-left:10px;padding-right:10px}body{padding-top:100px;overflow-x:hidden}.footer-nav-wrap .footer-nav a{color:#cccccc}.footer-title{font-size:1rem;margin-bottom:12px}}
/* 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;
}