:root{
  --header-offset:122px;
  --header-offset-mobile:108px;
  --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-color:#4FA8FF;
  --gold-color:#F2C14E;
  --divider-color:#1B3357;
  --deep-navy:#08162B;
}
html{
  scroll-behavior:smooth;
}
body{
  padding-top:var(--header-offset);
  margin:0;
  font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  background-color:var(--deep-navy);
  color:var(--text-main);
}
.site-header{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  min-height:auto;
  z-index:1000;
  background-color:var(--deep-navy);
  box-shadow:0 4px 20px rgba(0,0,0,0.5);
  border-bottom:1px solid var(--border-color);
}
.header-top{
  width:100%;
  background-color:var(--deep-navy);
  border-bottom:1px solid var(--divider-color);
}
.header-container{
  max-width:1200px;
  margin:0 auto;
  display:flex;
  flex-direction:row;
  justify-content:space-between;
  align-items:center;
  padding:10px 20px;
}
.logo{
  font-size:28px;
  font-weight:800;
  color:var(--gold-color);
  text-decoration:none;
  letter-spacing:1px;
  display:block;
  line-height:1.2;
  text-shadow:0 0 15px rgba(242,193,78,0.4);
  background:linear-gradient(135deg, #F2C14E 0%, #FFE180 50%, #F2C14E 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  white-space:nowrap;
}
.desktop-nav-buttons{
  display:flex;
  gap:10px;
  align-items:center;
}
.btn{
  display:inline-block;
  padding:8px 20px;
  border-radius:30px;
  font-weight:700;
  font-size:14px;
  text-decoration:none;
  text-align:center;
  transition:all 0.3s ease;
  border:none;
  cursor:pointer;
  letter-spacing:0.3px;
  box-shadow:0 2px 10px rgba(0,0,0,0.2);
}
.btn-register{
  background:var(--btn-gradient);
  color:#ffffff;
  border:1px solid rgba(255,255,255,0.2);
}
.btn-register:hover{
  box-shadow:0 0 20px rgba(43,115,246,0.6);
  transform:translateY(-1px);
}
.btn-login{
  background:transparent;
  color:var(--text-main);
  border:1px solid var(--secondary);
}
.btn-login:hover{
  background:rgba(29,95,209,0.2);
  box-shadow:0 0 15px rgba(29,95,209,0.3);
}
.main-nav{
  width:100%;
  display:flex;
  background-color:var(--primary);
  border-top:1px solid var(--divider-color);
  border-bottom:1px solid var(--divider-color);
  min-height:40px;
}
.nav-container{
  max-width:1200px;
  margin:0 auto;
  display:flex;
  flex-direction:row;
  justify-content:center;
  align-items:center;
  padding:5px 20px;
  flex-wrap:wrap;
  gap:5px 0;
}
.nav-link{
  color:var(--text-secondary);
  text-decoration:none;
  font-size:14px;
  font-weight:600;
  padding:8px 10px;
  border-radius:4px;
  transition:color 0.3s ease, background 0.3s ease;
  line-height:1.4;
  text-align:center;
  white-space:nowrap;
}
.nav-link:hover{
  color:var(--glow-color);
  background:rgba(79,168,255,0.1);
}
.nav-link.nav-download{
  color:var(--gold-color);
}
.hamburger-menu{
  display:none;
}
.mobile-menu-overlay{
  display:none;
}
.mobile-nav-buttons{
  display:none;
}
.site-footer{
  background-color:var(--deep-navy);
  color:var(--text-main);
  border-top:2px solid var(--border-color);
  margin-top:auto;
}
.footer-container{
  max-width:1200px;
  margin:0 auto;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  padding:40px 30px 20px;
  gap:20px;
}
.footer-column{
  flex:1;
  min-width:200px;
  margin-bottom:20px;
}
.footer-brand{
  flex:1.4;
}
.footer-logo{
  font-size:26px;
  font-weight:800;
  color:var(--gold-color);
  text-decoration:none;
  letter-spacing:1px;
  display:inline-block;
  margin-bottom:15px;
}
.footer-description{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.6;
  margin:0;
}
.footer-heading{
  font-size:16px;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:15px;
  text-transform:uppercase;
  letter-spacing:0.8px;
  border-bottom:2px solid var(--divider-color);
  padding-bottom:8px;
  position:relative;
}
.footer-heading::after{
  content:'';
  position:absolute;
  bottom:-2px;
  left:0;
  width:40px;
  height:2px;
  background:var(--gold-color);
}
.footer-nav{
  list-style:none;
  padding:0;
  margin:0;
}
.footer-nav li{
  margin-bottom:10px;
}
.footer-nav a{
  color:var(--text-secondary);
  text-decoration:none;
  font-size:14px;
  transition:color 0.3s ease, padding-left 0.3s ease;
  display:inline-block;
}
.footer-nav a:hover{
  color:var(--glow-color);
  padding-left:5px;
}
.footer-contact p{
  margin:8px 0;
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.5;
}
.footer-hotline{
  color:var(--gold-color) !important;
  font-weight:600;
}
.footer-bottom{
  background-color:#050D1A;
  padding:15px 30px;
  text-align:center;
  border-top:1px solid var(--divider-color);
}
.copyright-text{
  margin:5px 0;
  font-size:14px;
  color:var(--text-main);
}
.footer-legal-note{
  margin:5px 0;
  font-size:13px;
  color:var(--text-secondary);
}
@media (max-width:768px){
  body{
    padding-top:var(--header-offset-mobile);
  }
  :root{
    --header-offset:110px;
  }
  .site-header{
    min-height:auto;
    background-color:var(--deep-navy);
  }
  .header-top{
    display:flex;
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    border-bottom:1px solid var(--divider-color);
    position:relative;
    padding:0;
  }
  .header-container{
    width:100%;
    max-width:none;
    display:flex;
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    padding:8px 60px 8px 50px;
    position:relative;
  }
  .logo{
    font-size:24px;
    position:absolute;
    left:50%;
    transform:translateX(-50%);
  }
  .desktop-nav-buttons{
    display:none;
  }
  .hamburger-menu{
    display:flex;
    flex-direction:column;
    justify-content:space-between;
    width:35px;
    height:30px;
    cursor:pointer;
    padding:0;
    background:transparent;
    border:none;
    position:absolute;
    left:15px;
    top:50%;
    transform:translateY(-50%);
    z-index:1001;
  }
  .bar{
    display:block;
    width:100%;
    height:3px;
    background:var(--text-main);
    border-radius:2px;
    transition:all 0.3s ease;
  }
  .hamburger-menu.active .bar:nth-child(1){
    transform:translateY(13.5px) rotate(45deg);
    background:var(--gold-color);
  }
  .hamburger-menu.active .bar:nth-child(2){
    opacity:0;
  }
  .hamburger-menu.active .bar:nth-child(3){
    transform:translateY(-13.5px) rotate(-45deg);
    background:var(--gold-color);
  }
  .main-nav{
    display:none;
    position:fixed;
    top:0;
    left:0;
    width:280px;
    height:100vh;
    background-color:var(--deep-navy);
    flex-direction:column;
    padding-top:70px;
    padding-left:0;
    padding-right:0;
    justify-content:flex-start;
    align-items:stretch;
    z-index:1000;
    transform:translateX(-100%);
    transition:transform 0.3s ease;
    overflow-y:auto;
    border-right:1px solid var(--border-color);
    box-shadow:2px 0 15px rgba(0,0,0,0.3);
  }
  .main-nav.active{
    display:block;
    transform:translateX(0);
  }
  .nav-container{
    width:100%;
    max-width:none;
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    padding:0;
  }
  .nav-link{
    display:block;
    width:100%;
    padding:12px 25px;
    font-size:15px;
    border-bottom:1px solid var(--divider-color);
    color:var(--text-secondary);
    text-align:left;
    white-space:normal;
  }
  .nav-link:hover{
    background:rgba(29,95,209,0.2);
    padding-left:30px;
  }
  .nav-link.nav-download{
    color:var(--gold-color);
  }
  .mobile-nav-buttons{
    display:flex;
    gap:10px;
    align-items:center;
    justify-content:center;
    padding:8px 15px;
    background-color:var(--deep-navy);
    border-bottom:1px solid var(--divider-color);
    width:100%;
  }
  .mobile-nav-buttons .btn{
    flex:1;
    padding:6px 15px;
    font-size:13px;
    max-width:150px;
  }
  .mobile-menu-overlay{
    display:none;
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,0.6);
    z-index:999;
  }
  .mobile-menu-overlay.active{
    display:block;
  }
  .site-footer{
    margin-top:30px;
  }
  .footer-container{
    flex-direction:column;
    padding-left:20px;
    padding-right:20px;
    gap:0;
  }
  .footer-column{
    min-width:100%;
    margin-bottom:25px;
  }
  .footer-bottom{
    padding-left:20px;
    padding-right:20px;
    text-align:center;
  }
  .footer-copyright,
  .footer-disclaimer{
    text-align:center;
  }
  .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;
}