/* v=20260613 */
/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --aj-dark:#003d6b;
  --aj-blue:#005B9A;
  --aj-green:#059669;
  --aj-accent:#50CD89;
  --aj-purple:#7239EA;
  --aj-gold:#F6C000;
  --aj-text:#333;
  --aj-gray:#666;
  --aj-light:#f5f5f5;
  --aj-white:#fff;
  --aj-border:#e5e5e5;
  --aj-shadow:0 2px 8px rgba(0,0,0,0.06);
  --aj-shadow-lg:0 8px 24px rgba(0,0,0,0.12);
  --aj-radius:8px;
}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Microsoft YaHei",sans-serif;
  font-size:17px;
  color:var(--aj-text);
  background:var(--aj-light);
  line-height:1.6;
  padding-top:88px;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}

/* ===== Top Bar ===== */
.aj-topbar{
  background:var(--aj-dark);
  color:var(--aj-white);
  font-size:12px;
  padding:5px 0;
}
.aj-topbar .aj-container{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:6px;
}
.aj-topbar a{
  color:var(--aj-white);
  margin-left:15px;
  font-size:12px;
  transition:opacity 0.2s;
}
.aj-topbar a:hover{opacity:0.8}

/* ===== Header ===== */
.aj-header{overflow:visible;
  background:var(--aj-white);
  border-bottom:2px solid var(--aj-border);
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  box-shadow:var(--aj-shadow);
}
.aj-header .aj-container{
  display:flex;
  justify-content:space-between;
  align-items:center;
  min-height:60px;
}

/* Logo */
.aj-logo{
  display:flex;
  align-items:center;
  padding:8px 0;
  flex-shrink:0;
}
.aj-logo img{
  height:44px;
  width:auto;
  display:block;
}

/* ===== Navigation ===== */
.aj-nav{display:flex;align-items:center}
.aj-nav>li{position:relative}
.aj-nav>li>a{
  display:block;
  padding:24px 14px;
  font-size:15px;
  font-weight:600;
  color:var(--aj-text);
  white-space:nowrap;
  transition:color 0.2s,border-bottom 0.2s;
  letter-spacing:0.5px;
  border-bottom:3px solid transparent;
}
.aj-nav>li>a:hover,
.aj-nav>li>a.active{
  color:var(--aj-blue);
  border-bottom-color:var(--aj-blue);
}
.nav-badge{
  display:inline-block;
  background:#e53935;
  color:#fff;
  font-size:10px;
  font-weight:700;
  line-height:1;
  padding:3px 6px;
  border-radius:9px;
  margin-left:5px;
  vertical-align:2px;
  letter-spacing:0.5px;
}

/* Simple dropdown (sub-menu) */
.aj-sub{
  display:none;
  position:absolute;
  top:100%;
  left:0;
  background:var(--aj-white);
  min-width:180px;
  box-shadow:var(--aj-shadow-lg);
  z-index:1001;
  border-radius:0 0 6px 6px;
  border:1px solid #eee;
  border-top:none;
}
.aj-nav li{position:relative}
.aj-nav li:hover>.aj-sub{display:block}
.aj-sub a{
  display:block;
  padding:10px 18px;
  font-size:14px;
  color:#444;
  transition:background 0.15s,color 0.15s;
}
.aj-sub a:hover{
  background:#f0f7ff;
  color:var(--aj-blue);
}

/* Mega menu — card style */
.aj-mega{
  visibility:hidden;opacity:0;
  position:absolute;
  top:100%;
  left:50%;
  transform:translateX(-50%);
  background:var(--aj-white);
  box-shadow:0 12px 40px rgba(0,0,0,0.15);
  z-index:1001;
  border-radius:12px;
  padding:32px 36px;
  border:1px solid #e8e8e8;
  transition:opacity 0.15s;
  min-width:640px;
  width:max-content;
}
.aj-mega::before{
  content:"";
  position:absolute;
  top:-12px;
  left:0;right:0;
  height:12px;
  background:transparent;
}
.aj-nav>li:hover>.aj-mega{visibility:visible;opacity:1}
.aj-mega-inner{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
}
.aj-mega-col{min-width:0}
.aj-mega-col h4{
  margin-bottom:12px;
  font-size:14px;
  color:var(--aj-dark);
  font-weight:700;
  border-bottom:1px solid #ccc;
  padding-bottom:8px;
  white-space:nowrap;
}
.aj-mega-col h4 a{color:var(--aj-dark)}
.aj-mega-col h4 a:hover{color:var(--aj-blue)}
.aj-mega-col>a{
  display:block;
  padding:6px 0;
  font-size:13px;
  color:#555;
  transition:color 0.15s,padding-left 0.15s;
}
.aj-mega-feature{
  margin-top:12px;
  display:block;
  padding:10px 12px !important;
  border-radius:8px;
  background:linear-gradient(120deg,#003d6b,#005B9A);
  color:#fff !important;
  font-weight:700;
  font-size:13px;
  text-align:center;
}
.aj-mega-feature:hover{
  background:#004a7e;
  padding-left:12px !important;
}
.aj-mega-col>a:hover{
  color:var(--aj-blue);
  padding-left:4px;
}

/* Hamburger toggle */
.aj-hamburger{
  display:none;
  flex-direction:column;
  gap:5px;
  cursor:pointer;
  padding:10px;
  z-index:1002;
  background:none;
  border:none;
}
.aj-hamburger span{
  display:block;
  width:24px;
  height:2px;
  background:var(--aj-dark);
  border-radius:2px;
  transition:all 0.3s;
}
.aj-hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.aj-hamburger.active span:nth-child(2){opacity:0}
.aj-hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* Mobile nav overlay */
.aj-nav-overlay{
  display:none;
  position:fixed;
  top:0;left:0;right:0;bottom:0;
  background:rgba(0,0,0,0.5);
  z-index:999;
}
.aj-nav-overlay.active{display:block}

/* ===== Container ===== */
.aj-container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== Section ===== */
.aj-section{padding:50px 0}
/* AI 引用单元：一句话答案框（GEO 2026-10-28） */
.aj-answer{background:#f5f8fb;border-left:3px solid var(--aj-blue);padding:14px 18px;border-radius:4px;margin:0 0 18px;font-size:15px;color:#333;line-height:1.85;max-width:800px}
.aj-answer strong{color:var(--aj-blue)}
.aj-faq-item{border-bottom:1px solid #eceff3;padding:16px 0}
.aj-faq-item:last-child{border-bottom:none}
.aj-faq-q{font-size:16px;font-weight:600;color:#1a1a1a;margin:0 0 8px}
.aj-faq-a{font-size:14px;color:#555;line-height:1.85;margin:0;max-width:820px}
.aj-section-title{
  font-size:24px;
  font-weight:700;
  color:#1a1a1a;
  margin-bottom:24px;
  padding-bottom:8px;
  border-bottom:3px solid var(--aj-blue);
  display:inline-block;
}

/* ===== Cards ===== */
.aj-card-grid{display:grid;gap:20px}
.aj-card{
  background:var(--aj-white);
  border-radius:var(--aj-radius);
  box-shadow:0 1px 4px rgba(0,0,0,0.06);
  transition:box-shadow 0.3s,transform 0.2s;
}
.aj-card:hover{
  box-shadow:0 4px 16px rgba(0,0,0,0.1);
  transform:translateY(-2px);
}
.aj-card-img{
  height:160px;
  background:#e8f0f8;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--aj-blue);
  font-size:48px;
  border-radius:var(--aj-radius) var(--aj-radius) 0 0;
  overflow:hidden;
}
.aj-card-img img{width:100%;height:100%;object-fit:cover}
.aj-card-body{padding:16px}
.aj-card-body p{font-size:13px;color:var(--aj-gray);line-height:1.5}
.aj-card h3{font-size:17px;margin-bottom:6px}

/* ===== Banner ===== */
.aj-banner{
  background:linear-gradient(135deg,var(--aj-dark),var(--aj-blue));
  color:var(--aj-white);
  padding:80px 20px;
  text-align:center;
}
.aj-banner h1{font-size:36px;margin-bottom:8px}

/* ===== News ===== */
.aj-news-item{padding:14px 0;border-bottom:1px solid #eee}
.aj-news-item:last-child{border-bottom:none}
.aj-date{font-size:12px;color:#999}

/* ===== CTA ===== */
.aj-cta{
  background:linear-gradient(135deg,var(--aj-blue),#0077cc);
  color:var(--aj-white);
  text-align:center;
  padding:50px 20px;
  margin-top:30px;
}
.aj-cta h2{font-size:26px;margin-bottom:10px}

/* ===== Buttons ===== */
.aj-btn{
  display:inline-block;
  background:var(--aj-white);
  color:var(--aj-blue);
  padding:12px 30px;
  border-radius:6px;
  font-weight:600;
  font-size:15px;
  transition:opacity 0.2s,transform 0.2s;
  text-decoration:none;
  cursor:pointer;
}
.aj-btn:hover{opacity:0.9;transform:translateY(-1px)}
.aj-btn-primary{background:var(--aj-blue);color:var(--aj-white)}
.aj-btn-outline{background:transparent;border:2px solid var(--aj-white);color:var(--aj-white)}
.aj-btn-green{background:var(--aj-accent);color:var(--aj-white);border:none}

/* ===== Footer ===== */
.aj-footer{
  background:#1a1a1a;
  color:#aaa;
  padding:40px 0 20px;
  font-size:13px;
}
.aj-footer .aj-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px}
.aj-footer h4{color:var(--aj-white);font-size:15px;margin-bottom:12px}
.aj-footer a{color:#aaa;display:block;padding:3px 0;transition:color 0.2s}
.aj-footer a:hover{color:var(--aj-white)}
.aj-footer-bottom{
  border-top:1px solid #333;
  margin-top:30px;
  padding-top:20px;
  text-align:center;
  font-size:12px;
  grid-column:1/-1;
}
.aj-footer-grid{display:contents}

/* ===== Breadcrumb ===== */
.aj-breadcrumb{padding:15px 0;font-size:13px;color:#999}
.aj-breadcrumb a{color:var(--aj-blue)}
.aj-breadcrumb span{color:var(--aj-gray)}

/* ===== Article ===== */
.aj-article{max-width:800px;margin:0 auto;padding:30px 20px}
.aj-article h1{font-size:28px;margin-bottom:15px}
.aj-article .aj-meta{
  font-size:13px;
  color:#999;
  margin-bottom:25px;
  padding-bottom:15px;
  border-bottom:1px solid #eee;
}
.aj-article .aj-content{font-size:16px;line-height:1.8;color:#444}
.aj-article .aj-content h2{font-size:22px;margin:30px 0 15px;color:#1a1a1a}
.aj-article .aj-content h3{font-size:18px;margin:25px 0 12px;color:#333}
.aj-article .aj-content table{width:100%;border-collapse:collapse;margin:20px 0}
.aj-article .aj-content th{background:var(--aj-blue);color:var(--aj-white);padding:10px;text-align:left}
.aj-article .aj-content td{padding:10px;border:1px solid #ddd}
.aj-article .aj-content ul,.aj-article .aj-content ol{margin:15px 0;padding-left:25px}
.aj-article .aj-content li{margin:6px 0}

/* ===== Focus styles ===== */
a:focus-visible,button:focus-visible{
  outline:2px solid var(--aj-blue);
  outline-offset:2px;
}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .aj-nav>li>a{padding:24px 10px;font-size:14px}
  .aj-mega-inner{gap:20px;padding:0 15px}
}
@media(max-width:768px){
  body{padding-top:63px}
  .aj-logo img{width:180px;height:45px}

  /* Show hamburger */
  .aj-hamburger{display:flex}

  /* Mobile nav */
  .aj-nav{
    display:flex;
    flex-direction:column;
    position:fixed;
    top:0;right:-280px;
    width:280px;height:100vh;
    background:var(--aj-white);
    box-shadow:-4px 0 20px rgba(0,0,0,0.15);
    z-index:1000;
    overflow-y:auto;
    transition:right 0.3s ease;
    padding:70px 0 20px;
  }
  .aj-nav.active{right:0}
  .aj-nav>li{position:relative;width:100%}
  .aj-nav>li>a{
    padding:12px 24px;
    font-size:15px;
    border-bottom:1px solid #f0f0f0;
  }
  .aj-nav>li>a:hover,
  .aj-nav>li>a.active{border-bottom-color:var(--aj-blue);background:#f8fafd}

  /* Mobile sub-menu */
  .aj-sub{
    position:static;
    display:none;
    box-shadow:none;
    border:none;
    background:#f8fafd;
    padding:0 0 0 20px;
    border-radius:0;
  }
  .aj-nav>li:hover>.aj-sub{display:block}
  .aj-sub a{padding:8px 24px;font-size:13px}

  /* Mobile mega menu */
  .aj-mega{
    position:static;
    display:none;
    box-shadow:none;
    border-top:none;
    background:#f8fafd;
    padding:10px 0;
    animation:none;
  }
  .aj-nav>li:hover>.aj-mega{visibility:visible;opacity:1}
  .aj-mega-inner{
    flex-direction:column;
    gap:0;
    padding:0 0 0 20px;
  }
  .aj-mega-col{padding:8px 24px}
  .aj-mega-col h4{font-size:13px;margin-bottom:6px}
  .aj-mega-col>a{padding:4px 0;font-size:12px}

  .aj-banner h1{font-size:24px}
  .aj-banner{padding:40px 15px}
  .aj-section{padding:30px 0}
  .aj-card-grid{grid-template-columns:1fr!important}
  .aj-stat-grid{grid-template-columns:repeat(2,1fr)!important}
}
@media(max-width:640px){
  /* Footer 手机端布局：品牌全宽 + 栏目 2×2 + 版权全宽，收紧间距 */
  .aj-footer .aj-container{grid-template-columns:1fr 1fr;gap:26px 18px}
  .aj-footer .aj-footer-grid>div:first-child{grid-column:1/-1}
  .aj-footer .aj-footer-bottom{margin-top:0}
}