/* roulang page: index */
:root{
  --primary:#1b4a8c;
  --primary-dark:#123463;
  --primary-light:#e3ebf5;
  --accent:#c8a44a;
  --accent-dark:#a8861a;
  --dark:#0f1e3a;
  --bg:#f0f4f9;
  --card:#ffffff;
  --text:#2d3a54;
  --muted:#6b7890;
  --border:#d8e0ec;
  --radius-lg:16px;
  --radius-md:14px;
  --radius-sm:8px;
  --shadow:0 4px 20px rgba(15,30,58,.06);
  --shadow-hover:0 10px 32px rgba(15,30,58,.12);
  --transition:all .3s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;height:auto;object-fit:cover}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit}
.container{max-width:1200px}
section{padding:96px 0}
@media(max-width:1199px){section{padding:80px 0}}
@media(max-width:991px){section{padding:72px 0}}
@media(max-width:767px){section{padding:56px 0}}

/* 顶部信息条 */
.topbar{
  height:40px;
  background:#e3ebf5;
  font-size:13px;
  color:var(--primary-dark);
  display:flex;
  align-items:center;
}
.topbar .container{display:flex;justify-content:space-between;align-items:center}
.topbar a{color:var(--primary);padding:0 10px;font-size:13px}
.topbar a:hover{color:var(--accent-dark)}
.topbar .topbar-right{display:flex;align-items:center}
@media(max-width:767px){
  .topbar .topbar-right a:not(.topbar-login){display:none}
  .topbar .topbar-right a.topbar-login{
    display:inline-flex;align-items:center;gap:4px;font-weight:600;
  }
}

/* 主导航 */
.main-nav{
  position:sticky;
  top:0;
  z-index:1050;
  background:var(--card);
  box-shadow:0 2px 12px rgba(15,30,58,.08);
  min-height:72px;
}
.main-nav .navbar-brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:0;
}
.brand-icon{
  width:38px;height:38px;
  background:var(--primary);
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  color:#fff;
  font-size:19px;
  flex-shrink:0;
}
.brand-text{
  font-size:20px;
  font-weight:700;
  color:var(--dark);
  letter-spacing:.5px;
}
.main-nav .nav-link{
  color:var(--text);
  font-size:16px;
  font-weight:500;
  padding:10px 16px !important;
  position:relative;
}
.main-nav .nav-link:hover{
  color:var(--primary);
}
.main-nav .nav-link.active{
  color:var(--primary);
  font-weight:600;
}
.main-nav .nav-link.active::after{
  content:"";
  position:absolute;
  bottom:0;
  left:14px;
  right:14px;
  height:2px;
  background:var(--accent);
  border-radius:1px;
}
.btn-gold{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--accent);
  color:var(--dark) !important;
  border-radius:var(--radius-sm);
  padding:10px 22px;
  font-weight:600;
  font-size:15px;
  line-height:1.2;
  border:none;
  transition:var(--transition);
  box-shadow:0 2px 8px rgba(200,164,74,.25);
}
.btn-gold:hover{
  background:#d6ae52;
  color:var(--dark) !important;
  box-shadow:inset 0 0 8px rgba(0,0,0,.08),0 4px 14px rgba(200,164,74,.3);
  transform:translateY(-2px);
}
.navbar-toggler{
  border:none;
  padding:6px;
  color:var(--primary);
}
.navbar-toggler:focus{box-shadow:none}
.navbar-toggler-icon{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%231b4a8c' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}
@media(max-width:991px){
  .main-nav .navbar-collapse{
    background:var(--card);
    padding:16px;
    border-radius:12px;
    margin-top:12px;
    box-shadow:var(--shadow);
    border:1px solid var(--border);
  }
  .main-nav .nav-link{padding:12px 8px !important}
  .main-nav .btn-gold{margin:12px 0 4px;justify-content:center}
}

/* Hero */
.hero{
  position:relative;
  padding:80px 0 70px;
  background:
    linear-gradient(135deg,rgba(255,255,255,.96) 0%,rgba(227,235,245,.92) 60%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow:hidden;
}
@media(max-width:767px){.hero{padding:48px 0 40px}}
.hero .hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary-light);
  color:var(--primary);
  padding:6px 16px;
  border-radius:50px;
  font-size:13px;
  font-weight:600;
  margin-bottom:20px;
}
.hero h1{
  font-size:46px;
  font-weight:800;
  color:var(--dark);
  line-height:1.2;
  margin-bottom:18px;
  letter-spacing:.5px;
}
@media(max-width:767px){.hero h1{font-size:32px}}
.hero-sub{
  font-size:18px;
  color:var(--muted);
  line-height:1.7;
  margin-bottom:28px;
  max-width:480px;
}
@media(max-width:767px){.hero-sub{font-size:16px}}
.hero-btns{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:20px;
}
.btn-primary-solid{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--accent);
  color:var(--dark) !important;
  border-radius:var(--radius-sm);
  padding:12px 28px;
  font-weight:700;
  font-size:15px;
  border:none;
  transition:var(--transition);
  box-shadow:0 4px 12px rgba(200,164,74,.3);
}
.btn-primary-solid:hover{
  background:#d6ae52;
  transform:translateY(-2px);
  box-shadow:0 6px 18px rgba(200,164,74,.35);
}
.btn-outline-primary{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--primary-light);
  color:var(--primary) !important;
  border-radius:var(--radius-sm);
  padding:12px 28px;
  font-weight:600;
  font-size:15px;
  border:1px solid rgba(27,74,140,.2);
  transition:var(--transition);
}
.btn-outline-primary:hover{
  background:var(--primary);
  color:#fff !important;
  border-color:var(--primary);
  transform:translateY(-2px);
}
.hero-stats{
  display:flex;
  gap:32px;
  margin-top:32px;
  padding-top:24px;
  border-top:1px solid rgba(27,74,140,.15);
}
@media(max-width:575px){.hero-stats{gap:16px;flex-wrap:wrap}}
.stat-item{display:flex;flex-direction:column}
.stat-num{
  font-size:28px;
  font-weight:800;
  color:var(--primary);
  line-height:1.2;
  min-height:34px;
  display:block;
}
.stat-label{
  font-size:13px;
  color:var(--muted);
  margin-top:4px;
}
.hero-img-wrap{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:0 16px 48px rgba(15,30,58,.18);
}
.hero-img-wrap img{
  width:100%;
  height:100%;
  object-fit:cover;
  min-height:380px;
  border-radius:var(--radius-lg);
  display:block;
}
@media(max-width:767px){
  .hero-img-wrap img{min-height:260px}
}

/* 通用板块标题 */
.section-head{
  margin-bottom:48px;
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:20px;
}
.section-head.text-center{flex-direction:column;align-items:center;text-align:center}
.section-head h2{
  font-size:32px;
  font-weight:700;
  color:var(--dark);
  margin-bottom:8px;
}
.section-head p{
  color:var(--muted);
  font-size:15px;
  margin-bottom:0;
}
.text-link{
  color:var(--primary);
  font-weight:600;
  font-size:15px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  white-space:nowrap;
}
.text-link i{transition:transform .3s}
.text-link:hover{color:var(--accent-dark)}
.text-link:hover i{transform:translateX(4px)}
@media(max-width:767px){
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:32px}
  .section-head h2{font-size:26px}
}

/* 最新动态 */
.news-section{background:var(--bg)}
.news-card{
  background:var(--card);
  border-radius:var(--radius-md);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:var(--transition);
  display:block;
  height:100%;
  border:1px solid rgba(216,224,236,.6);
}
.news-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
  border-color:rgba(27,74,140,.2);
}
.news-card-img{
  overflow:hidden;
  aspect-ratio:16/10;
  background:var(--primary-light);
}
.news-card-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.news-card:hover .news-card-img img{transform:scale(1.04)}
.news-card-body{padding:24px}
.news-card-body h3{
  font-size:18px;
  font-weight:600;
  color:var(--dark);
  line-height:1.4;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card-body p{
  font-size:14px;
  color:var(--muted);
  line-height:1.6;
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card-main .news-card-body h3{font-size:22px}
.news-tag{
  display:inline-flex;
  align-items:center;
  background:transparent;
  border:1px solid var(--accent);
  color:var(--accent-dark);
  border-radius:4px;
  font-size:13px;
  font-weight:600;
  padding:2px 10px;
  margin-bottom:12px;
}
.news-meta{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:13px;
  color:var(--muted);
}
.news-meta .read-more{
  color:var(--primary);
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:4px;
}
.news-card-small .news-card-body{padding:20px}
.news-card-small .news-card-body h3{
  font-size:15px;
  -webkit-line-clamp:2;
}
@media(max-width:767px){
  .news-card-body{padding:18px}
  .news-card-main .news-card-body h3{font-size:18px}
}
.empty-state{
  border:2px dashed var(--border);
  border-radius:var(--radius-lg);
  padding:60px 20px;
  text-align:center;
  color:var(--muted);
  font-size:16px;
  background:rgba(255,255,255,.6);
}

/* 服务时间线 */
.timeline-section{
  background:var(--card);
  position:relative;
}
.timeline{
  position:relative;
  max-width:960px;
  margin:0 auto;
  padding:20px 0;
}
.timeline::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  bottom:0;
  width:3px;
  background:var(--primary-light);
  transform:translateX(-50%);
  border-radius:2px;
}
.timeline-item{
  position:relative;
  width:50%;
  padding:0 40px 48px 0;
}
.timeline-item.right{
  left:50%;
  padding:0 0 48px 40px;
}
.timeline-dot{
  position:absolute;
  top:8px;
  right:-10px;
  width:18px;
  height:18px;
  border-radius:50%;
  background:var(--accent);
  border:4px solid var(--card);
  box-shadow:0 0 0 3px rgba(200,164,74,.3);
  z-index:2;
}
.timeline-item.right .timeline-dot{
  left:-10px;
  right:auto;
}
.timeline-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:28px;
  box-shadow:var(--shadow);
  transition:var(--transition);
}
.timeline-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
  border-color:rgba(200,164,74,.5);
}
.timeline-num{
  display:inline-block;
  font-size:14px;
  font-weight:700;
  color:var(--accent-dark);
  background:rgba(200,164,74,.12);
  border-radius:6px;
  padding:2px 12px;
  margin-bottom:14px;
}
.timeline-card h3{
  font-size:20px;
  font-weight:600;
  color:var(--dark);
  margin-bottom:10px;
}
.timeline-card p{
  font-size:14px;
  color:var(--muted);
  line-height:1.7;
}
@media(max-width:991px){
  .timeline::before{left:16px;transform:none}
  .timeline-item,.timeline-item.right{
    width:100%;
    left:0;
    padding:0 0 36px 52px;
  }
  .timeline-dot,.timeline-item.right .timeline-dot{
    left:8px;
    right:auto;
  }
}
@media(max-width:575px){
  .timeline-card{padding:20px}
  .timeline-card h3{font-size:18px}
}

/* 功能亮点 */
.features-section{background:var(--bg)}
.feature-list{
  display:flex;
  flex-direction:column;
  gap:24px;
  height:100%;
  justify-content:center;
}
.feature-item{
  display:flex;
  gap:16px;
  background:var(--card);
  border-radius:var(--radius-md);
  padding:24px 28px;
  box-shadow:var(--shadow);
  border:1px solid rgba(216,224,236,.6);
  transition:var(--transition);
}
.feature-item:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
  border-left:4px solid var(--accent);
}
.feature-icon{
  flex-shrink:0;
  width:48px;
  height:48px;
  background:var(--primary-light);
  color:var(--primary);
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
}
.feature-item h3{
  font-size:18px;
  font-weight:600;
  color:var(--dark);
  margin-bottom:6px;
}
.feature-item p{
  font-size:14px;
  color:var(--muted);
  line-height:1.6;
  margin-bottom:0;
}
.features-visual{
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:0 16px 48px rgba(15,30,58,.16);
  height:100%;
  min-height:420px;
}
.features-visual img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
@media(max-width:991px){
  .features-visual{min-height:280px;margin-top:32px}
}

/* 服务等级对比 */
.pricing-section{background:var(--card)}
.pricing-scroll{
  display:flex;
  gap:24px;
  align-items:stretch;
  overflow-x:auto;
  padding:24px 4px 16px;
}
.pricing-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:32px;
  box-shadow:var(--shadow);
  transition:var(--transition);
  flex:1 0 0;
  min-width:0;
  position:relative;
  display:flex;
  flex-direction:column;
}
.pricing-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}
.pricing-card.recommended{
  border:2px solid var(--accent);
  box-shadow:0 12px 32px rgba(200,164,74,.18);
  margin-top:-20px;
  z-index:2;
}
.pricing-badge{
  position:absolute;
  top:-14px;
  left:50%;
  transform:translateX(-50%);
  background:var(--accent);
  color:var(--dark);
  font-size:13px;
  font-weight:700;
  padding:4px 18px;
  border-radius:20px;
  white-space:nowrap;
  box-shadow:0 4px 10px rgba(200,164,74,.3);
}
.pricing-card h3{
  font-size:22px;
  font-weight:700;
  color:var(--dark);
  margin-bottom:8px;
}
.pricing-desc{
  font-size:14px;
  color:var(--muted);
  margin-bottom:24px;
}
.pricing-features{
  list-style:none;
  padding:0;
  margin:0 0 24px;
  flex-grow:1;
}
.pricing-features li{
  display:flex;
  align-items:flex-start;
  gap:8px;
  font-size:14px;
  color:var(--text);
  padding:6px 0;
}
.pricing-features li i{
  color:var(--accent-dark);
  font-size:13px;
  margin-top:3px;
}
.pricing-price{
  font-size:14px;
  color:var(--muted);
  margin-bottom:20px;
}
.pricing-price strong{
  font-size:30px;
  color:var(--dark);
  font-weight:800;
}
.pricing-btn{
  display:block;
  text-align:center;
  background:var(--primary-light);
  color:var(--primary);
  border:none;
  border-radius:var(--radius-sm);
  padding:12px 20px;
  font-weight:600;
  font-size:15px;
  transition:var(--transition);
}
.pricing-btn:hover{
  background:var(--primary);
  color:#fff;
}
.pricing-card.recommended .pricing-btn{
  background:var(--accent);
  color:var(--dark);
}
.pricing-card.recommended .pricing-btn:hover{
  background:#d6ae52;
}
@media(max-width:991px){
  .pricing-scroll{flex-wrap:nowrap;overflow-x:auto}
  .pricing-card{flex:0 0 85%}
  .pricing-card.recommended{margin-top:0}
}

/* CTA 表单 */
.cta-section{
  position:relative;
  background:
    linear-gradient(rgba(15,30,58,.9),rgba(15,30,58,.92)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
}
.cta-inner{
  max-width:760px;
  margin:0 auto;
  text-align:center;
}
.cta-inner h2{
  font-size:34px;
  font-weight:700;
  margin-bottom:14px;
  color:#fff;
}
.cta-inner > p{
  font-size:16px;
  color:rgba(255,255,255,.8);
  margin-bottom:36px;
}
.cta-form{
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-lg);
  padding:36px;
  backdrop-filter:blur(6px);
}
.cta-form .form-control,.cta-form .form-select{
  height:44px;
  border-radius:var(--radius-sm);
  border:1px solid var(--border);
  padding:10px 16px;
  font-size:15px;
  color:var(--text);
  background:#fff;
}
.cta-form .form-control:focus,.cta-form .form-select:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(27,74,140,.15);
  outline:none;
}
.cta-form label{
  font-size:13px;
  color:rgba(255,255,255,.85);
  margin-bottom:6px;
  font-weight:500;
}
.cta-form .btn-gold{
  width:100%;
  justify-content:center;
  padding:14px 20px;
  font-size:16px;
}
.cta-help{
  margin-top:18px;
  font-size:14px;
  color:rgba(255,255,255,.7);
}
.cta-help a{
  color:var(--accent);
  font-weight:600;
  border-bottom:1px solid rgba(200,164,74,.5);
}
.cta-help a:hover{color:#e0c06a}
@media(max-width:575px){
  .cta-inner h2{font-size:26px}
  .cta-form{padding:24px 20px}
}

/* FAQ */
.faq-section{background:var(--bg)}
.faq-wrap{max-width:860px;margin:0 auto}
.faq-accordion .accordion-item{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  margin-bottom:16px;
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:var(--transition);
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(27,74,140,.4);
  box-shadow:var(--shadow-hover);
}
.faq-accordion .accordion-button{
  background:var(--card);
  color:var(--dark);
  padding:22px 28px;
  font-size:16px;
  font-weight:600;
  box-shadow:none;
  display:flex;
  align-items:center;
  gap:14px;
}
.faq-accordion .accordion-button::after{
  background-size:12px;
  filter:invert(40%) sepia(40%) saturate(500%) hue-rotate(190deg);
  transition:transform .3s;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(180deg);
  filter:invert(70%) sepia(60%) saturate(400%) hue-rotate(10deg);
}
.faq-accordion .accordion-button:focus{
  box-shadow:none;
}
.faq-num{
  font-size:15px;
  font-weight:700;
  color:var(--accent);
  background:rgba(200,164,74,.12);
  padding:2px 10px;
  border-radius:6px;
  flex-shrink:0;
}
.faq-accordion .accordion-body{
  padding:0 28px 24px 68px;
  font-size:15px;
  color:var(--muted);
  line-height:1.7;
}
@media(max-width:575px){
  .faq-accordion .accordion-body{padding:0 18px 18px 52px}
  .faq-accordion .accordion-button{padding:18px 16px}
}

/* 页脚 */
.footer{
  background:var(--dark);
  color:rgba(255,255,255,.75);
  padding:64px 0 0;
  font-size:14px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand .brand-icon{
  background:rgba(255,255,255,.15);
  color:var(--accent);
}
.footer-brand .brand-text{
  color:#fff;
  font-size:19px;
}
.footer-desc{
  color:rgba(255,255,255,.55);
  line-height:1.7;
  font-size:14px;
  max-width:260px;
}
.footer h4{
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin-bottom:18px;
  position:relative;
  padding-bottom:10px;
}
.footer h4::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:2px;
  background:var(--accent);
  border-radius:1px;
}
.footer-links li{
  margin-bottom:10px;
}
.footer-links a{
  color:rgba(255,255,255,.65);
  font-size:14px;
  transition:var(--transition);
}
.footer-links a:hover{
  color:var(--accent);
  padding-left:4px;
}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:8px;
  margin-bottom:12px;
  color:rgba(255,255,255,.65);
}
.footer-contact i{
  color:var(--accent);
  margin-top:3px;
  width:16px;
}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;
  text-align:center;
  font-size:13px;
  color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.55)}
.footer-bottom a:hover{color:var(--accent)}
@media(max-width:767px){
  .footer{padding-top:48px}
  .footer h4{margin-top:20px}
}

/* 通用按钮状态 */
.btn-gold:active,.btn-primary-solid:active,.btn-outline-primary:active{
  transform:translateY(0);
  box-shadow:inset 0 2px 6px rgba(0,0,0,.12);
}
a:focus-visible,button:focus-visible{
  outline:3px solid rgba(27,74,140,.35);
  outline-offset:2px;
}
@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category1 */
:root {
            --primary: #1e4d8c;
            --primary-dark: #163a6b;
            --primary-light: #e8f0f9;
            --primary-soft: #f0f5fb;
            --accent: #c9a44c;
            --accent-hover: #b8913a;
            --accent-light: #f5edd8;
            --bg-body: #f2f5f9;
            --text-main: #2c3e50;
            --text-secondary: #5a7184;
            --text-muted: #8a9bab;
            --border-color: #dbe3ec;
            --card-shadow: 0 2px 16px rgba(30, 77, 140, 0.08);
            --card-shadow-hover: 0 10px 30px rgba(30, 77, 140, 0.14);
            --radius-lg: 16px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --space-section: 96px;
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
            object-fit: cover;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #1c2a3a;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 22px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn-gold:hover {
            background: var(--accent-hover);
            color: #1c2a3a;
            box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.08);
            transform: translateY(-1px);
        }
        .btn-gold:focus {
            outline: 3px solid rgba(201, 164, 76, 0.4);
            outline-offset: 2px;
        }

        .btn-secondary-blue {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            color: var(--primary);
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 22px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn-secondary-blue:hover {
            background: var(--primary);
            color: #ffffff;
        }
        .btn-secondary-blue:focus {
            outline: 3px solid rgba(30, 77, 140, 0.3);
            outline-offset: 2px;
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            border: none;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            padding: 6px 0;
            cursor: pointer;
            transition: all 0.3s;
        }
        .btn-text i {
            transition: transform 0.3s;
        }
        .btn-text:hover {
            color: var(--primary-dark);
        }
        .btn-text:hover i {
            transform: translateX(4px);
        }

        /* 顶部信息条 */
        .top-info {
            background: var(--primary-light);
            height: 40px;
            display: flex;
            align-items: center;
            font-size: 13px;
            color: var(--primary-dark);
        }
        .top-info .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 100%;
        }
        .top-info .domain-text {
            font-weight: 500;
            letter-spacing: 0.3px;
        }
        .top-info .top-links {
            display: flex;
            gap: 24px;
            align-items: center;
        }
        .top-info .top-links a {
            color: var(--primary-dark);
            font-size: 13px;
            transition: color 0.3s;
        }
        .top-info .top-links a:hover {
            color: var(--primary);
        }
        .top-info .top-login-mobile {
            display: none;
            color: var(--primary-dark);
            font-size: 14px;
        }

        /* 主导航 */
        .main-nav {
            background: #ffffff;
            box-shadow: 0 2px 12px rgba(30, 77, 140, 0.06);
            min-height: 72px;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            border-bottom: 1px solid rgba(219, 227, 236, 0.6);
        }
        .main-nav .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
        }
        .main-nav .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .main-nav .brand-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 1px;
            line-height: 1.2;
        }
        .main-nav .navbar-nav {
            gap: 4px;
        }
        .main-nav .nav-link {
            font-size: 16px;
            color: var(--text-main);
            font-weight: 500;
            padding: 8px 14px;
            position: relative;
            border-bottom: 2px solid transparent;
            transition: color 0.3s, border-color 0.3s;
        }
        .main-nav .nav-link:hover {
            color: var(--primary);
        }
        .main-nav .nav-link.active {
            color: var(--primary);
            border-bottom-color: var(--accent);
            font-weight: 600;
        }
        .main-nav .btn-gold {
            padding: 8px 18px;
            font-size: 14px;
            margin-left: 16px;
            white-space: nowrap;
        }
        .navbar-toggler {
            border: none;
            padding: 4px 8px;
            color: var(--primary);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(30, 77, 140, 0.2);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231e4d8c' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* 面包屑 */
        .breadcrumb-bar {
            background: var(--primary-soft);
            padding: 18px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb-bar .breadcrumb {
            margin: 0;
            font-size: 14px;
        }
        .breadcrumb-bar .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb-bar .breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .breadcrumb-bar .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-muted);
        }
        .breadcrumb-bar .breadcrumb-item.active {
            color: var(--text-secondary);
        }

        /* ===== 分类页样式 ===== */
        .category-page {
            padding: 64px 0;
        }

        .category-hero {
            background: var(--primary-soft);
            border-radius: var(--radius-lg);
            padding: 56px;
            margin-bottom: 48px;
            position: relative;
            overflow: hidden;
        }
        .category-hero .hero-bg {
            position: absolute;
            top: 0;
            right: 0;
            width: 60%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.2;
            border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
            z-index: 0;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 1;
            max-width: 75%;
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .category-hero p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 660px;
            line-height: 1.8;
        }

        /* 图文交替大块 */
        .service-feature-block {
            padding: 72px 0;
        }
        .feature-row {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 80px;
        }
        .feature-row:last-child {
            margin-bottom: 0;
        }
        .feature-row .feature-img {
            flex: 1;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(30, 77, 140, 0.12);
            transition: box-shadow 0.4s, transform 0.4s;
        }
        .feature-row .feature-img:hover {
            box-shadow: 0 14px 40px rgba(30, 77, 140, 0.2);
            transform: translateY(-4px);
        }
        .feature-row .feature-img img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            display: block;
        }
        .feature-row .feature-text {
            flex: 1;
        }
        .feature-row .feature-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--accent);
            color: #1c2a3a;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 20px;
            box-shadow: 0 4px 12px rgba(201, 164, 76, 0.3);
        }
        .feature-row .feature-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.4;
        }
        .feature-row .feature-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .feature-row .feature-text .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .feature-row .feature-text .feature-list li {
            font-size: 15px;
            color: var(--text-main);
            padding: 9px 0;
            border-bottom: 1px dashed var(--border-color);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: padding-left 0.3s;
        }
        .feature-row .feature-text .feature-list li:hover {
            padding-left: 6px;
        }
        .feature-row .feature-text .feature-list li i {
            color: var(--accent);
            font-size: 14px;
            width: 20px;
            text-align: center;
        }
        .feature-row .feature-text .feature-list li:last-child {
            border-bottom: none;
        }

        .feature-row.reverse {
            flex-direction: row-reverse;
        }

        /* 深色CTA条 */
        .dark-cta {
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            padding: 56px;
            margin-top: 72px;
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 32px;
        }
        .dark-cta::after {
            content: '';
            position: absolute;
            top: -30px;
            right: 20px;
            width: 160px;
            height: 160px;
            background: var(--accent);
            opacity: 0.08;
            border-radius: 50%;
        }
        .dark-cta .cta-text {
            max-width: 560px;
            position: relative;
            z-index: 1;
        }
        .dark-cta .cta-text h3 {
            font-size: 28px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .dark-cta .cta-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.7;
            margin: 0;
        }
        .dark-cta .cta-action {
            position: relative;
            z-index: 1;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* CTA 按钮 */
        .page-cta {
            padding: 64px 0;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            padding-top: 72px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.72);
        }
        .footer .brand-text {
            color: #ffffff;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 1px;
        }
        .footer .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.68);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .footer h4 {
            color: #ffffff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.72);
            font-size: 14px;
            transition: color 0.3s, padding-left 0.3s;
        }
        .footer-links a:hover {
            color: #ffffff;
            padding-left: 4px;
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.68);
        }
        .footer-contact li i {
            color: var(--accent);
            font-size: 14px;
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.14);
            padding: 22px 0;
            margin-top: 48px;
            text-align: center;
            color: rgba(255, 255, 255, 0.68);
            font-size: 13px;
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199px) {
            :root {
                --space-section: 72px;
            }
        }

        @media (max-width: 991px) {
            :root {
                --space-section: 56px;
            }
            .main-nav .navbar-collapse {
                padding: 16px 0 20px;
                border-top: 1px solid var(--border-color);
                margin-top: 12px;
            }
            .main-nav .navbar-nav {
                gap: 0;
                margin-bottom: 12px;
            }
            .main-nav .nav-link {
                padding: 10px 0;
                border-bottom: none;
                border-left: 3px solid transparent;
                padding-left: 8px;
            }
            .main-nav .nav-link.active {
                border-left-color: var(--accent);
                border-bottom: none;
            }
            .main-nav .btn-gold {
                margin-left: 0;
                width: 100%;
                justify-content: center;
                margin-top: 8px;
            }
            .category-hero {
                padding: 40px 28px;
            }
            .category-hero .hero-content {
                max-width: 100%;
            }
            .category-hero h1 {
                font-size: 34px;
            }
            .feature-row,
            .feature-row.reverse {
                flex-direction: column;
                gap: 28px;
            }
            .feature-row .feature-img,
            .feature-row .feature-text {
                width: 100%;
                flex: none;
            }
            .feature-row .feature-img img {
                height: 260px;
            }
            .dark-cta {
                padding: 40px 28px;
            }
        }

        @media (max-width: 575px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .top-info .top-links a:not(.top-login-mobile) {
                display: none;
            }
            .top-info .top-login-mobile {
                display: inline-flex;
                align-items: center;
                gap: 6px;
            }
            .category-hero {
                padding: 32px 20px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p {
                font-size: 15px;
            }
            .feature-row {
                margin-bottom: 56px;
            }
            .feature-row .feature-img img {
                height: 200px;
            }
            .feature-row .feature-text h2,
            .dark-cta .cta-text h3 {
                font-size: 24px;
            }
            .feature-row .feature-text p {
                font-size: 14px;
            }
            .dark-cta {
                flex-direction: column;
                align-items: flex-start;
            }
            .dark-cta .cta-action {
                flex-direction: column;
                width: 100%;
            }
            .dark-cta .btn-gold {
                width: 100%;
                justify-content: center;
            }
            .footer {
                padding-top: 56px;
            }
            .footer-bottom {
                margin-top: 36px;
            }
        }

/* roulang page: article */
:root {
            --primary: #14315a;
            --primary-dark: #0e2240;
            --primary-light: #e8f0fe;
            --primary-lighter: #f5f9ff;
            --accent: #d4a94e;
            --accent-dark: #b8913a;
            --bg: #f0f4f9;
            --white: #ffffff;
            --text: #2c3e50;
            --text-light: #6c7a89;
            --text-muted: #9aa7b4;
            --border: #e3eaf2;
            --shadow-sm: 0 2px 8px rgba(20, 49, 90, 0.06);
            --shadow-md: 0 6px 24px rgba(20, 49, 90, 0.10);
            --shadow-lg: 0 16px 40px rgba(20, 49, 90, 0.14);
            --radius-lg: 16px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --transition: all 0.3s ease;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.7;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-dark);
        }

        img {
            max-width: 100%;
            height: auto;
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-sm);
            padding: 10px 22px;
            border: none;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-gold:hover {
            background: var(--accent-dark);
            color: var(--primary);
            box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
            transform: translateY(-2px);
        }
        .btn-gold:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-outline-blue {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-sm);
            padding: 10px 22px;
            border: 1px solid transparent;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline-blue:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-outline-blue:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 500;
            text-decoration: none;
            transition: var(--transition);
        }
        .text-link i {
            transition: transform 0.3s ease;
        }
        .text-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 顶部信息条 ===== */
        .top-bar {
            height: 40px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border);
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 100%;
        }
        .top-bar .top-domain {
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .top-bar .top-links {
            display: flex;
            align-items: center;
            gap: 0;
        }
        .top-bar .top-links a {
            color: var(--primary);
            font-size: 13px;
            text-decoration: none;
            margin-left: 24px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .top-bar .top-links a:hover {
            color: var(--accent-dark);
        }
        .top-bar .top-login-mobile {
            display: none;
            color: var(--primary);
            font-size: 13px;
            text-decoration: none;
            margin-left: 16px;
        }

        /* ===== 主导航 ===== */
        .main-nav {
            background: var(--white);
            box-shadow: var(--shadow-sm);
            min-height: 72px;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .main-nav .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--primary);
            padding: 10px 0;
            white-space: nowrap;
        }
        .main-nav .navbar-brand:hover {
            color: var(--primary);
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: var(--accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            flex-shrink: 0;
            box-shadow: 0 2px 6px rgba(20, 49, 90, 0.2);
        }
        .brand-text {
            font-size: 21px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .main-nav .navbar-toggler {
            border: none;
            padding: 6px 8px;
            color: var(--primary);
            box-shadow: none;
            outline: none;
        }
        .main-nav .navbar-toggler:focus {
            box-shadow: 0 0 0 3px var(--primary-light);
        }
        .main-nav .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2314315a' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            width: 26px;
            height: 26px;
        }
        .main-nav .navbar-nav {
            gap: 4px;
        }
        .main-nav .nav-link {
            font-size: 15px;
            color: var(--text);
            font-weight: 500;
            padding: 24px 14px !important;
            position: relative;
            transition: var(--transition);
            letter-spacing: 0.2px;
        }
        .main-nav .nav-link:hover,
        .main-nav .nav-link.active {
            color: var(--primary);
        }
        .main-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--accent);
        }
        .main-nav .btn-gold {
            margin-left: 12px;
            font-size: 14px;
            padding: 8px 18px;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-area {
            background: var(--primary-light);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .breadcrumb-area .breadcrumb {
            margin: 0;
            padding: 0;
            background: transparent;
        }
        .breadcrumb-area .breadcrumb-item {
            font-size: 14px;
            color: var(--text-light);
        }
        .breadcrumb-area .breadcrumb-item + .breadcrumb-item::before {
            content: "/";
            color: var(--text-muted);
            padding: 0 8px;
        }
        .breadcrumb-area .breadcrumb-item a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb-area .breadcrumb-item a:hover {
            color: var(--accent-dark);
        }
        .breadcrumb-area .breadcrumb-item.active {
            color: var(--text);
            font-weight: 500;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 280px;
        }

        /* ===== 文章头部 ===== */
        .article-section {
            padding: 56px 0 48px;
        }
        .article-header {
            max-width: 860px;
            margin: 0 auto 40px;
            text-align: center;
        }
        .article-category {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 30px;
            border: 1px solid var(--border);
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .article-title {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--primary);
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px 24px;
            margin-bottom: 24px;
            font-size: 14px;
            color: var(--text-light);
        }
        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--accent);
        }
        .article-abstract {
            background: var(--primary-lighter);
            border-left: 4px solid var(--accent);
            border-radius: 0 12px 12px 0;
            padding: 18px 24px;
            text-align: left;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-light);
            margin-top: 20px;
        }
        .article-cover {
            max-width: 860px;
            margin: 0 auto 40px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .article-cover img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
            display: block;
        }

        /* ===== 正文排版 ===== */
        .article-body {
            max-width: 760px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            word-break: break-word;
        }
        .article-body p {
            margin-bottom: 24px;
        }
        .article-body h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin: 48px 0 16px;
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--primary);
            margin: 32px 0 12px;
            line-height: 1.45;
        }
        .article-body h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            margin: 24px 0 8px;
            line-height: 1.5;
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--primary-lighter);
            padding: 16px 24px;
            color: var(--text-light);
            border-radius: 0 12px 12px 0;
            margin: 28px 0;
            font-size: 15px;
            font-style: normal;
        }
        .article-body ul,
        .article-body ol {
            padding-left: 26px;
            margin-bottom: 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body li::marker {
            color: var(--accent);
        }
        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body figure {
            margin: 24px 0;
        }
        .article-body figure img {
            margin-bottom: 8px;
        }
        .article-body figcaption,
        .article-body .img-caption {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.6;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 15px;
        }
        .article-body th {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .article-body td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            background: var(--white);
        }
        .article-body tr:nth-child(even) td {
            background: var(--primary-lighter);
        }
        .article-body pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: 12px;
            overflow-x: auto;
            margin: 28px 0;
            font-size: 14px;
            line-height: 1.7;
        }
        .article-body code {
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
            background: rgba(20, 49, 90, 0.06);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 14px;
            color: var(--primary);
        }
        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
            font-size: 14px;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: var(--accent-dark);
        }
        .article-body hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 40px 0;
        }
        .article-body strong {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 64px 0 40px;
            border-top: 1px solid var(--border);
            background: var(--white);
        }
        .related-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .related-header .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }
        .related-header .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 48px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .related-card {
            display: flex;
            flex-direction: column;
            background: var(--white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
            text-decoration: none;
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            text-decoration: none;
            border-color: var(--accent);
        }
        .related-card:hover .related-link i {
            transform: translateX(4px);
        }
        .related-thumb {
            position: relative;
            overflow: hidden;
            height: 200px;
        }
        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .related-thumb img {
            transform: scale(1.05);
        }
        .related-content {
            padding: 22px 22px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .related-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--primary);
            background: var(--primary-lighter);
            border: 1px solid var(--accent);
            border-radius: 20px;
            padding: 3px 12px;
            margin-bottom: 12px;
            align-self: flex-start;
            font-weight: 500;
        }
        .related-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--primary);
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-content p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 12px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
        }
        .related-link {
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
        }
        .related-link i {
            transition: transform 0.3s ease;
        }

        .back-link {
            text-align: center;
            margin-top: 40px;
        }
        .back-link a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 15px;
            font-weight: 500;
            text-decoration: none;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            transition: var(--transition);
        }
        .back-link a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 内容未找到 ===== */
        .not-found-section {
            padding: 80px 0 100px;
        }
        .not-found-box {
            max-width: 520px;
            margin: 0 auto;
            text-align: center;
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 56px 40px;
        }
        .not-found-box i {
            font-size: 56px;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 26px;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .not-found-box p {
            color: var(--text-light);
            margin-bottom: 24px;
            font-size: 15px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 72px 0;
            background: var(--primary-lighter);
        }
        .cta-box {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }
        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .cta-box p {
            font-size: 16px;
            color: var(--text-light);
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #0d1f3a;
            color: #b8c6d9;
            padding: 64px 0 0;
            font-size: 14px;
        }
        .footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer .brand-icon {
            background: var(--accent);
            color: var(--primary);
        }
        .footer .brand-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: #9fb0c8;
            margin-bottom: 20px;
        }
        .footer h4 {
            color: #fff;
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #9fb0c8;
            text-decoration: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
            color: #9fb0c8;
        }
        .footer-contact i {
            color: var(--accent);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            color: #7e8ca3;
            font-size: 13px;
            margin-top: 48px;
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199px) {
            .main-nav .nav-link {
                padding: 24px 10px !important;
                font-size: 14px;
            }
            .main-nav .btn-gold {
                padding: 8px 14px;
                font-size: 13px;
                margin-left: 8px;
            }
        }

        @media (max-width: 991px) {
            .main-nav .container {
                flex-wrap: wrap;
            }
            .main-nav .navbar-collapse {
                background: var(--white);
                border-top: 1px solid var(--border);
                padding: 12px 0 16px;
                box-shadow: var(--shadow-sm);
            }
            .main-nav .navbar-nav {
                width: 100%;
                padding: 0 8px;
            }
            .main-nav .nav-link {
                padding: 12px 14px !important;
                border-radius: var(--radius-sm);
            }
            .main-nav .nav-link.active::after {
                display: none;
            }
            .main-nav .nav-link.active {
                background: var(--primary-light);
                color: var(--primary);
                font-weight: 600;
            }
            .main-nav .btn-gold {
                margin: 12px 14px 4px;
                width: calc(100% - 28px);
                justify-content: center;
            }
            .article-title {
                font-size: 32px;
            }
        }

        @media (max-width: 767px) {
            .top-bar .top-links {
                display: none;
            }
            .top-bar .top-login-mobile {
                display: inline-flex;
                align-items: center;
                gap: 4px;
            }
            .article-section {
                padding: 36px 0 32px;
            }
            .article-header {
                margin-bottom: 28px;
            }
            .article-title {
                font-size: 26px;
            }
            .article-abstract {
                padding: 14px 18px;
                font-size: 14px;
            }
            .article-cover {
                margin-bottom: 28px;
            }
            .article-body {
                font-size: 15px;
                line-height: 1.8;
            }
            .article-body h2 {
                font-size: 24px;
                margin-top: 36px;
            }
            .article-body h3 {
                font-size: 20px;
                margin-top: 28px;
            }
            .article-body blockquote {
                padding: 14px 18px;
                font-size: 14px;
            }
            .related-section {
                padding: 40px 0 32px;
            }
            .related-header .section-title {
                font-size: 24px;
            }
            .cta-section {
                padding: 48px 0 56px;
            }
            .cta-box {
                padding: 36px 24px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn-gold,
            .cta-actions .btn-outline-blue {
                width: 100%;
                justify-content: center;
            }
            .footer {
                padding: 48px 0 0;
            }
            .breadcrumb-area .breadcrumb-item.active {
                max-width: 160px;
            }
        }

        @media (max-width: 575px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .main-nav .navbar-brand .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }
            .article-title {
                font-size: 23px;
            }
            .article-meta {
                gap: 8px 16px;
                font-size: 13px;
            }
            .related-thumb {
                height: 180px;
            }
            .related-content {
                padding: 16px 18px;
            }
            .related-content h3 {
                font-size: 16px;
            }
            .back-link a {
                width: 100%;
                justify-content: center;
            }
            .not-found-box {
                padding: 40px 20px;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #1a4b8c;
  --primary-dark: #143a6e;
  --primary-light: #e8eff7;
  --gold: #c9a86a;
  --gold-dark: #b8934e;
  --bg: #f4f7fb;
  --text: #263445;
  --text-secondary: #55677b;
  --text-light: #8a9bb0;
  --border: #dfe6ef;
  --white: #ffffff;
  --dark-blue: #0d1f33;
  --radius-lg: 16px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 12px rgba(20, 40, 70, 0.06);
  --shadow-md: 0 8px 28px rgba(20, 40, 70, 0.10);
  --shadow-lg: 0 18px 46px rgba(20, 40, 70, 0.14);
  --transition: all 0.3s ease;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

img {
  max-width: 100%;
  height: auto;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
  margin-top: 0;
}

.container {
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
}

@media (max-width: 575px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* 顶部信息条 */
.top-bar {
  background: #e3ecf7;
  height: 40px;
  font-size: 13px;
  border-bottom: 1px solid rgba(26, 75, 140, 0.08);
}

.top-bar .container {
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.top-bar-domain {
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 0.2px;
}

.top-bar-links {
  display: flex;
  align-items: center;
  gap: 14px;
}

.top-bar-links a {
  color: var(--primary);
  font-weight: 500;
}

.top-bar-links a:hover {
  color: var(--gold-dark);
}

.top-bar-links .divider {
  color: rgba(26, 75, 140, 0.3);
}

.top-bar-login {
  color: var(--primary);
  font-weight: 600;
  font-size: 13px;
}

/* 主导航 */
.main-nav {
  background: var(--white);
  min-height: 72px;
  box-shadow: 0 2px 16px rgba(13, 31, 51, 0.07);
  position: sticky;
  top: 0;
  z-index: 1030;
  padding-top: 0;
  padding-bottom: 0;
}

.main-nav .container {
  min-height: 72px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  margin-right: 0;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 18px;
  flex-shrink: 0;
}

.brand-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.main-nav .navbar-nav {
  gap: 4px;
}

.main-nav .nav-link {
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 14px;
  position: relative;
  white-space: nowrap;
}

.main-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.main-nav .nav-link:hover {
  color: var(--primary);
}

.main-nav .nav-link:hover::after,
.main-nav .nav-link.active::after {
  transform: scaleX(1);
}

.main-nav .nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.btn-gold {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--gold);
  color: var(--dark-blue) !important;
  font-weight: 600;
  font-size: 15px;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 22px;
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.btn-gold:hover {
  background: var(--gold-dark);
  color: var(--white) !important;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.12);
  transform: translateY(-1px);
}

.navbar-toggler {
  border: none;
  padding: 6px 8px;
}

.navbar-toggler:focus {
  box-shadow: none;
}

@media (max-width: 991px) {
  .main-nav .navbar-collapse {
    background: var(--white);
    padding: 16px 0 20px;
    border-radius: 0 0 14px 14px;
    box-shadow: 0 16px 32px rgba(13, 31, 51, 0.10);
  }

  .main-nav .nav-link {
    padding: 12px 16px;
    border-radius: 8px;
  }

  .main-nav .nav-link::after {
    display: none;
  }

  .main-nav .nav-link.active {
    background: var(--primary-light);
    color: var(--primary);
  }

  .btn-gold {
    margin-top: 12px;
    width: 100%;
  }
}

/* 按钮体系 */
.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: var(--white) !important;
  font-weight: 600;
  font-size: 15px;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 22px;
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
}

.btn-primary-custom:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(26, 75, 140, 0.25);
}

.btn-outline-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary) !important;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid rgba(26, 75, 140, 0.15);
  border-radius: var(--radius-sm);
  padding: 10px 22px;
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
}

.btn-outline-custom:hover {
  background: var(--primary);
  color: var(--white) !important;
  border-color: var(--primary);
}

/* 分类页 Hero */
.category-hero {
  background: linear-gradient(180deg, #edf2f8 0%, var(--bg) 100%);
  padding: 72px 0 64px;
  border-bottom: 1px solid rgba(26, 75, 140, 0.06);
}

.category-hero .hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(201, 168, 106, 0.15);
  color: var(--gold-dark);
  font-size: 13px;
  font-weight: 600;
  border-radius: 30px;
  padding: 6px 16px;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.category-hero h1 {
  font-size: 44px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.category-hero .hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.8;
}

@media (max-width: 767px) {
  .category-hero {
    padding: 52px 0 44px;
  }

  .category-hero h1 {
    font-size: 32px;
  }

  .category-hero .hero-desc {
    font-size: 15px;
  }
}

/* 指标卡片区 */
.metrics-section {
  padding: 80px 0;
}

.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-dark);
  letter-spacing: 2px;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 40px;
}

.metric-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(223, 230, 239, 0.6);
  transition: var(--transition);
  height: auto;
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
  opacity: 0.8;
}

.metric-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.metric-card .metric-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 20px;
  margin-bottom: 18px;
}

.metric-card .metric-value {
  font-size: 38px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.metric-card .metric-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.metric-card .metric-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
}

.metric-card.tall {
  padding-top: 44px;
  padding-bottom: 44px;
}

.metric-card.gold {
  border-top: 3px solid var(--gold);
}

.metric-card.gold .metric-value {
  color: var(--gold-dark);
}

@media (max-width: 991px) {
  .metrics-section {
    padding: 64px 0;
  }

  .metric-card {
    padding: 26px 22px;
  }
}

@media (max-width: 767px) {
  .metrics-section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .metric-card .metric-value {
    font-size: 32px;
  }
}

/* 长文说明板块 */
.defense-section {
  padding: 88px 0;
  background: var(--white);
  border-top: 1px solid rgba(223, 230, 239, 0.5);
  border-bottom: 1px solid rgba(223, 230, 239, 0.5);
}

.defense-content p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 18px;
}

.defense-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.defense-image img {
  width: 100%;
  display: block;
  object-fit: cover;
  min-height: 320px;
}

.security-list {
  margin-top: 16px;
}

.security-list-item {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(223, 230, 239, 0.6);
}

.security-list-item:last-child {
  border-bottom: none;
}

.security-list-item .sec-icon {
  width: 44px;
  height: 44px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 17px;
  flex-shrink: 0;
}

.security-list-item h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.security-list-item p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

@media (max-width: 991px) {
  .defense-section {
    padding: 64px 0;
  }

  .defense-image {
    margin-top: 32px;
  }
}

@media (max-width: 767px) {
  .defense-section {
    padding: 56px 0;
  }
}

/* 对比表格 */
.compare-section {
  padding: 88px 0;
}

.compare-table {
  width: 100%;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  min-width: 720px;
}

.compare-table thead th {
  background: var(--primary);
  color: var(--white);
  font-size: 15px;
  font-weight: 600;
  padding: 18px 20px;
  text-align: center;
  border: none;
  white-space: nowrap;
}

.compare-table thead th:first-child {
  text-align: left;
  background: var(--primary-dark);
}

.compare-table tbody td {
  padding: 16px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  text-align: center;
  vertical-align: middle;
}

.compare-table tbody td:first-child {
  text-align: left;
  font-weight: 600;
  color: var(--text);
  background: #f8fafc;
}

.compare-table tbody tr:last-child td {
  border-bottom: none;
}

.compare-table tbody tr:hover td {
  background: #fafbfd;
}

.compare-table .tag-recommended {
  display: inline-block;
  background: rgba(201, 168, 106, 0.18);
  color: var(--gold-dark);
  border: 1px solid rgba(201, 168, 106, 0.35);
  font-size: 12px;
  font-weight: 600;
  border-radius: 20px;
  padding: 3px 12px;
  margin-left: 6px;
}

@media (max-width: 991px) {
  .compare-section {
    padding: 64px 0;
  }
}

@media (max-width: 767px) {
  .compare-section {
    padding: 56px 0;
  }
}

/* CTA 深色区块 */
.cta-dark {
  background: var(--dark-blue);
  padding: 84px 0;
  position: relative;
  overflow: hidden;
}

.cta-dark::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(26, 75, 140, 0.25);
}

.cta-dark::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(201, 168, 106, 0.10);
}

.cta-dark .cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.cta-dark h2 {
  color: var(--white);
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-dark p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 28px;
}

@media (max-width: 767px) {
  .cta-dark {
    padding: 56px 0;
  }

  .cta-dark h2 {
    font-size: 24px;
  }
}

/* 页脚 */
.footer {
  background: var(--dark-blue);
  color: rgba(255, 255, 255, 0.7);
  padding: 72px 0 0;
  font-size: 14px;
}

.footer .footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer .footer-brand .brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  font-size: 16px;
}

.footer .footer-brand .brand-text {
  color: var(--white);
  font-size: 19px;
  font-weight: 700;
}

.footer-desc {
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
  line-height: 1.75;
  margin-bottom: 20px;
}

.footer h4 {
  color: var(--white);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--gold);
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

.footer-contact i {
  color: var(--gold);
  width: 16px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 56px;
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
  margin: 0;
}

@media (max-width: 767px) {
  .footer {
    padding-top: 56px;
  }

  .footer-bottom {
    margin-top: 40px;
  }
}

/* 通用板块间距 */
.section-padding {
  padding: 96px 0;
}

@media (max-width: 991px) {
  .section-padding {
    padding: 72px 0;
  }
}

@media (max-width: 767px) {
  .section-padding {
    padding: 56px 0;
  }
}

/* roulang page: category3 */
/* ========== 设计变量 ========== */
:root {
  --primary: #1e2a4a;
  --primary-light: #2c3e6e;
  --secondary: #5a6b8c;
  --accent: #c9a44a;
  --accent-hover: #b8933f;
  --bg: #f0f4fa;
  --bg-light: #f7f9fc;
  --card-bg: #fff;
  --text: #1e2a4a;
  --text-secondary: #5a6b8c;
  --text-muted: #8a94a8;
  --border: #dfe5ef;
  --border-light: #edf0f5;
  --shadow: 0 4px 20px rgba(30, 42, 74, 0.08);
  --shadow-hover: 0 12px 32px rgba(30, 42, 74, 0.14);
  --radius-lg: 16px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* ========== 基础 Reset & Base ========== */
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  transition: var(--transition);
  color: inherit;
}
a:hover {
  color: var(--primary-light);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
  margin: 0;
}
p {
  margin: 0;
}
button,
input,
select,
textarea {
  font-family: var(--font-family);
}

/* ========== 容器 ========== */
.container {
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
}
.section {
  padding: 96px 0;
}

/* ========== 顶部信息条 ========== */
.topbar {
  background: #e3ebf5;
  height: 40px;
  font-size: 13px;
  line-height: 40px;
  border-bottom: 1px solid rgba(194, 208, 226, 0.6);
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}
.topbar-domain {
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.3px;
}
.topbar-links {
  display: flex;
  align-items: center;
  gap: 0;
}
.topbar-links a {
  color: var(--primary);
  font-weight: 500;
  padding: 0 12px;
  border-left: 1px solid rgba(30, 42, 74, 0.18);
  transition: color 0.2s;
}
.topbar-links a:first-child {
  border-left: none;
}
.topbar-links a:hover {
  color: var(--accent-hover);
}
.topbar-login {
  color: var(--primary);
  font-weight: 500;
  font-size: 13px;
}

/* ========== 主导航 ========== */
.main-nav {
  background: #fff;
  min-height: 72px;
  padding: 0;
  box-shadow: 0 2px 12px rgba(30, 42, 74, 0.07);
  border-bottom: 1px solid var(--border-light);
  z-index: 1030;
}
.main-nav .navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}
.main-nav .brand-icon {
  width: 40px;
  height: 40px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  flex-shrink: 0;
  box-shadow: 0 3px 8px rgba(30, 42, 74, 0.18);
}
.main-nav .brand-text {
  letter-spacing: 0.3px;
}
.main-nav .navbar-nav {
  gap: 4px;
}
.main-nav .nav-link {
  padding: 25px 16px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav .nav-link:hover {
  color: var(--primary-light);
  background: rgba(240, 244, 250, 0.5);
}
.main-nav .nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--accent);
  font-weight: 600;
}
.main-nav .navbar-toggler {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
}
.main-nav .navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(201, 164, 74, 0.25);
}
.main-nav .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%231e2a4a' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}
.btn-gold {
  background: var(--accent);
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 22px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(201, 164, 74, 0.28);
}
.btn-gold:hover {
  background: var(--accent-hover);
  color: var(--primary);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.08);
  transform: translateY(-1px);
}
.btn-gold:focus-visible {
  outline: 2px solid var(--accent-hover);
  outline-offset: 2px;
}

/* ========== Hero 窄条 ========== */
.page-hero {
  background: linear-gradient(135deg, #f0f4fa 0%, #e6edf7 100%);
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(201, 164, 74, 0.18) 0%, transparent 70%);
  pointer-events: none;
}
.breadcrumb-nav {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.breadcrumb-nav a {
  color: var(--text-muted);
}
.breadcrumb-nav a:hover {
  color: var(--primary);
}
.breadcrumb-nav .separator {
  color: #b6c0d0;
}
.page-hero h1 {
  font-size: 44px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 1px;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}
.page-hero .hero-lead {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 760px;
  line-height: 1.85;
  position: relative;
  z-index: 1;
}

/* ========== 服务承诺指标条 ========== */
.commit-strip {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
  box-shadow: 0 2px 10px rgba(30, 42, 74, 0.04);
}
.commit-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 8px 12px;
}
.commit-item i {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--bg);
  color: var(--primary);
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid var(--border);
}
.commit-item h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.commit-item p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ========== 会员服务主体 ========== */
.member-service {
  background: var(--bg);
}
.section-heading {
  margin-bottom: 36px;
}
.section-heading h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}
.section-heading p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

/* 折叠面板 */
.member-accordion .accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 18px;
  overflow: hidden;
  background: var(--card-bg);
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s, border-color 0.3s;
}
.member-accordion .accordion-item:hover {
  box-shadow: var(--shadow-hover);
}
.member-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: var(--primary-light);
  box-shadow: 0 6px 24px rgba(30, 42, 74, 0.1);
}
.member-accordion .accordion-button {
  background: transparent;
  box-shadow: none;
  padding: 26px 30px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid transparent;
  display: flex;
  align-items: center;
  gap: 0;
  border-radius: 0;
}
.member-accordion .accordion-button::after {
  background-image: none;
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  content: "\f078";
  font-size: 14px;
  color: var(--primary);
  margin-left: auto;
  transition: transform 0.35s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}
.member-accordion .accordion-button:not(.collapsed)::after {
  transform: rotate(180deg);
  color: var(--accent);
}
.member-accordion .accordion-button:not(.collapsed) {
  color: var(--primary);
  border-bottom-color: var(--border);
}
.member-accordion .accordion-button:focus {
  box-shadow: none;
  outline: none;
}
.member-accordion .acc-num {
  color: var(--accent);
  font-weight: 700;
  font-size: 16px;
  margin-right: 16px;
  letter-spacing: 0.5px;
  min-width: 32px;
  font-family: "SF Pro Display", "Segoe UI", sans-serif;
}
.member-accordion .acc-icon {
  color: var(--primary-light);
  font-size: 18px;
  margin-right: 14px;
  width: 20px;
  text-align: center;
}
.member-accordion .accordion-body {
  padding: 24px 30px 30px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.85;
  background: var(--bg-light);
  border-top: none;
}
.member-accordion .accordion-body p + p {
  margin-top: 12px;
}
.member-accordion .accordion-body strong {
  color: var(--text);
}

/* 帮助卡片 */
.help-card-wrap {
  position: relative;
}
.help-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover);
  padding: 36px 30px;
  border: 1px solid var(--border);
  position: sticky;
  top: 100px;
  transition: var(--transition);
}
.help-card:hover {
  box-shadow: 0 16px 40px rgba(30, 42, 74, 0.18);
}
.help-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 22px;
}
.help-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 2px solid var(--accent);
}
.help-avatar i {
  font-size: 24px;
  color: var(--primary-light);
}
.help-info h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}
.help-info p {
  font-size: 13px;
  color: var(--text-muted);
}
.help-list {
  margin-bottom: 24px;
}
.help-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 0;
  font-size: 14px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-light);
}
.help-list li:last-child {
  border-bottom: none;
}
.help-list i {
  color: var(--primary-light);
  width: 18px;
  font-size: 14px;
  text-align: center;
}
.help-card .btn-gold {
  width: 100%;
  justify-content: center;
  padding: 12px 22px;
}
.help-card-note {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 14px;
}

/* ========== 行动卡片 ========== */
.action-section {
  background: var(--bg-light);
  border-top: 1px solid var(--border);
}
.action-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  border: 1px solid var(--border);
}
.action-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.action-card .action-image {
  height: 170px;
  overflow: hidden;
  position: relative;
}
.action-card .action-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.action-card:hover .action-image img {
  transform: scale(1.04);
}
.action-card .action-content {
  padding: 28px 28px 30px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.action-card .action-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-hover);
  background: rgba(201, 164, 74, 0.1);
  border: 1px solid rgba(201, 164, 74, 0.35);
  border-radius: 6px;
  padding: 3px 12px;
  margin-bottom: 14px;
  align-self: flex-start;
}
.action-card h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}
.action-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
  flex: 1;
}
.action-card .btn-gold {
  align-self: flex-start;
}
.btn-outline {
  background: var(--bg);
  color: var(--primary);
  border: 1px solid #c3d0e2;
  border-radius: var(--radius-sm);
  padding: 10px 22px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-1px);
}
.btn-outline:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ========== 页脚 ========== */
.footer {
  background: #16203b;
  color: #aab4c8;
  padding: 72px 0 0;
  font-size: 14px;
}
.footer .container {
  max-width: 1200px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.footer-brand .brand-icon {
  width: 42px;
  height: 42px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 18px;
}
.footer-brand .brand-text {
  font-size: 22px;
  font-weight: 700;
  color: #e8ecf3;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: #8f9bb3;
  margin-bottom: 0;
  max-width: 260px;
}
.footer h4 {
  font-size: 16px;
  font-weight: 600;
  color: #d3dae5;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: #8f9bb3;
  font-size: 14px;
  transition: color 0.2s;
  display: inline-block;
}
.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #8f9bb3;
  margin-bottom: 12px;
  font-size: 14px;
}
.footer-contact i {
  color: var(--accent);
  width: 16px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  margin-top: 56px;
  text-align: center;
  color: #77839c;
  font-size: 13px;
}

/* ========== 响应式 / Bootstrap 覆盖 ========== */
@media (max-width: 1199px) {
  .main-nav .nav-link {
    padding: 25px 12px;
    font-size: 15px;
  }
  .main-nav .btn-gold {
    padding: 8px 16px;
    font-size: 14px;
  }
  .page-hero h1 {
    font-size: 38px;
  }
  .section {
    padding: 80px 0;
  }
  .commit-item {
    padding: 6px 8px;
  }
  .commit-item h4 {
    font-size: 16px;
  }
}

@media (max-width: 991px) {
  .main-nav {
    min-height: 64px;
  }
  .main-nav .navbar-nav {
    padding: 12px 0;
    gap: 0;
  }
  .main-nav .nav-link {
    padding: 12px 16px;
    border-bottom: none;
    border-left: 3px solid transparent;
  }
  .main-nav .nav-link.active {
    border-bottom: none;
    border-left-color: var(--accent);
    background: rgba(240, 244, 250, 0.6);
  }
  .main-nav .navbar-nav .btn-gold {
    margin: 12px 16px 8px !important;
    width: calc(100% - 32px);
    justify-content: center;
  }
  .page-hero {
    padding: 48px 0 40px;
  }
  .page-hero h1 {
    font-size: 34px;
  }
  .section {
    padding: 72px 0;
  }
  .help-card {
    position: static;
    margin-top: 24px;
  }
  .commit-item {
    margin-bottom: 16px;
  }
  .action-card {
    margin-bottom: 20px;
  }
}

@media (max-width: 767px) {
  .topbar {
    font-size: 12px;
  }
  .topbar-links {
    display: none !important;
  }
  .page-hero {
    padding: 40px 0 36px;
  }
  .page-hero h1 {
    font-size: 30px;
  }
  .page-hero .hero-lead {
    font-size: 15px;
  }
  .section {
    padding: 56px 0;
  }
  .section-heading h2 {
    font-size: 26px;
  }
  .member-accordion .accordion-button {
    padding: 20px 20px;
    font-size: 16px;
  }
  .member-accordion .accordion-body {
    padding: 18px 20px 24px;
    font-size: 14px;
  }
  .member-accordion .acc-num {
    min-width: 26px;
    font-size: 14px;
    margin-right: 10px;
  }
  .help-card {
    padding: 26px 22px;
  }
  .footer {
    padding-top: 56px;
  }
  .footer-bottom {
    margin-top: 40px;
  }
  .action-card .action-image {
    height: 160px;
  }
}

@media (max-width: 575px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }
  .brand-text {
    font-size: 18px !important;
  }
  .navbar-brand .brand-icon {
    width: 34px !important;
    height: 34px !important;
    font-size: 15px !important;
  }
  .page-hero h1 {
    font-size: 26px;
  }
  .page-hero .hero-lead {
    font-size: 14px;
  }
  .commit-item {
    flex-direction: column;
    gap: 8px;
  }
  .commit-item i {
    width: 40px;
    height: 40px;
    font-size: 17px;
  }
  .action-card .action-content {
    padding: 22px 18px;
  }
  .action-card h3 {
    font-size: 18px;
  }
  .action-card p {
    font-size: 14px;
  }
  .footer h4 {
    font-size: 15px;
  }
  .footer-desc {
    font-size: 13px;
  }
  .member-accordion .accordion-button .acc-icon {
    display: none;
  }
}

/* roulang page: category4 */
/* ============ Design Token ============ */
        :root {
            --primary: #2C5F8A;
            --primary-dark: #1D4163;
            --primary-light: #E8F0F7;
            --bg-light: #F4F7FA;
            --text-main: #2B3A4A;
            --text-muted: #6B7A8A;
            --gold: #C9A227;
            --gold-dark: #B08D1C;
            --navy: #16283A;
            --white: #FFFFFF;
            --border-light: #DCE4EC;
            --radius-lg: 16px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 2px 12px rgba(43, 58, 74, 0.06);
            --shadow-hover: 0 8px 24px rgba(43, 58, 74, 0.12);
            --spacing-section: 96px;
            --spacing-section-md: 72px;
            --spacing-section-sm: 56px;
        }

        /* ============ Reset / Base ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-light);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--primary);
        }

        img {
            max-width: 100%;
            height: auto;
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            color: var(--navy);
            line-height: 1.3;
        }

        /* ============ Topbar ============ */
        .topbar {
            background: var(--primary-light);
            height: 40px;
            font-size: 13px;
            color: var(--primary-dark);
            display: flex;
            align-items: center;
        }

        .topbar .topbar-left {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .topbar .topbar-right {
            display: flex;
            align-items: center;
            gap: 20px;
            justify-content: flex-end;
        }

        .topbar a {
            color: var(--primary-dark);
            font-size: 13px;
        }

        .topbar a:hover {
            color: var(--gold);
        }

        .topbar .topbar-login {
            background: var(--gold);
            color: var(--navy);
            padding: 3px 12px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 12px;
            transition: background 0.25s;
        }

        .topbar .topbar-login:hover {
            background: var(--gold-dark);
            color: var(--white);
        }

        /* ============ Main Navbar ============ */
        .main-nav {
            background: var(--white);
            box-shadow: 0 2px 10px rgba(43, 58, 74, 0.05);
            min-height: 72px;
            padding-top: 0;
            padding-bottom: 0;
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .main-nav .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
        }

        .main-nav .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 18px;
        }

        .main-nav .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--navy);
            letter-spacing: 0.5px;
        }

        .main-nav .nav-link {
            color: var(--text-main);
            font-size: 16px;
            padding: 8px 16px !important;
            font-weight: 500;
            position: relative;
        }

        .main-nav .nav-link:hover {
            color: var(--primary);
        }

        .main-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .main-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--gold);
            border-radius: 2px;
        }

        .navbar-toggler {
            border: none;
            padding: 4px 8px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(44,95,138,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .btn-gold {
            background: var(--gold);
            color: var(--navy);
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.25s ease;
        }

        .btn-gold:hover {
            background: var(--gold-dark);
            color: var(--white);
            box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.12);
            transform: translateY(-1px);
        }

        .btn-outline-blue {
            background: var(--primary-light);
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.25s ease;
        }

        .btn-outline-blue:hover {
            background: var(--primary);
            color: var(--white);
        }

        /* ============ FAQ Hero ============ */
        .faq-hero {
            background: linear-gradient(180deg, var(--white) 0%, var(--bg-light) 100%);
            padding: 64px 0 72px;
            border-bottom: 1px solid var(--border-light);
        }

        .faq-hero .faq-hero-title {
            font-size: 44px;
            font-weight: 800;
            color: var(--navy);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .faq-hero .faq-hero-lead {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 620px;
            margin-bottom: 32px;
        }

        .faq-search-box {
            display: flex;
            align-items: center;
            background: var(--white);
            border-radius: 50px;
            box-shadow: 0 6px 24px rgba(43, 58, 74, 0.10);
            padding: 6px 6px 6px 20px;
            max-width: 560px;
            transition: box-shadow 0.3s ease;
        }

        .faq-search-box:focus-within {
            box-shadow: 0 8px 32px rgba(44, 95, 138, 0.16);
            border: 1px solid var(--primary);
            padding-left: 19px;
            padding-top: 5px;
            padding-bottom: 5px;
        }

        .faq-search-box i {
            color: var(--text-muted);
            font-size: 16px;
            margin-right: 12px;
        }

        .faq-search-box input {
            border: none;
            outline: none;
            flex: 1;
            font-size: 15px;
            color: var(--text-main);
            background: transparent;
            height: 44px;
        }

        .faq-search-box input::placeholder {
            color: #AAB8C4;
        }

        .faq-search-box .search-btn {
            background: var(--primary);
            color: var(--white);
            border: none;
            border-radius: 30px;
            padding: 10px 28px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s ease;
        }

        .faq-search-box .search-btn:hover {
            background: var(--primary-dark);
        }

        .faq-hero-img {
            border-radius: var(--radius-lg);
            box-shadow: 0 12px 36px rgba(43, 58, 74, 0.12);
            width: 100%;
            object-fit: cover;
        }

        /* ============ FAQ Section ============ */
        .faq-section {
            padding: var(--spacing-section) 0;
        }

        .faq-section .section-head {
            text-align: center;
            margin-bottom: 56px;
        }

        .faq-section .section-head .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 30px;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .faq-section .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--navy);
            margin-bottom: 8px;
        }

        .faq-section .section-head p {
            color: var(--text-muted);
            font-size: 15px;
        }

        .faq-layout {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-group {
            margin-bottom: 64px;
        }

        .faq-group:last-child {
            margin-bottom: 0;
        }

        .faq-group-title {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 24px;
            font-weight: 700;
            color: var(--navy);
            margin-bottom: 28px;
            padding-bottom: 14px;
            border-bottom: 2px solid var(--border-light);
        }

        .faq-group-title .faq-group-num {
            width: 34px;
            height: 34px;
            background: var(--white);
            border: 2px solid var(--gold);
            color: var(--gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .accordion-item {
            background: var(--white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            box-shadow: var(--shadow-card);
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
            overflow: hidden;
        }

        .accordion-item:last-of-type {
            margin-bottom: 0;
        }

        .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: var(--gold);
            box-shadow: 0 6px 20px rgba(201, 162, 39, 0.10);
        }

        .accordion-button {
            padding: 20px 28px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: var(--white);
            border: none;
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .accordion-button:not(.collapsed) {
            background: var(--white);
            color: var(--primary);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary);
        }

        .accordion-button .faq-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--gold);
            background: var(--primary-light);
            border-radius: 6px;
            padding: 3px 8px;
            flex-shrink: 0;
            min-width: 32px;
            text-align: center;
        }

        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%236B7A8A'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
            transition: transform 0.35s ease;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23C9A227'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }

        .accordion-body {
            padding: 0 28px 24px 64px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            background: var(--white);
            border-top: 1px solid var(--border-light);
            padding-top: 18px;
        }

        /* ============ Contact / CTA ============ */
        .faq-contact {
            padding: 72px 0;
            background: var(--white);
            border-top: 1px solid var(--border-light);
        }

        .faq-contact .contact-inner {
            background: var(--bg-light);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .faq-contact .contact-inner::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: var(--primary-light);
            border-radius: 50%;
            opacity: 0.5;
        }

        .faq-contact .contact-inner h3 {
            font-size: 28px;
            font-weight: 800;
            color: var(--navy);
            margin-bottom: 10px;
        }

        .faq-contact .contact-inner p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .faq-contact .contact-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .faq-contact .contact-btns .btn-gold {
            padding: 12px 30px;
            font-size: 15px;
        }

        .faq-contact .contact-btns .btn-outline-blue {
            padding: 12px 30px;
            font-size: 15px;
        }

        /* ============ Footer ============ */
        .footer {
            background: var(--navy);
            color: #A8B8C8;
            padding: 64px 0 0;
        }

        .footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 16px;
        }

        .footer .footer-brand .brand-text {
            font-size: 18px;
            font-weight: 800;
            color: var(--white);
        }

        .footer .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #A8B8C8;
            margin-bottom: 0;
        }

        .footer h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 32px;
            height: 2px;
            background: var(--gold);
            border-radius: 2px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #A8B8C8;
            font-size: 14px;
            transition: color 0.25s, padding-left 0.25s;
        }

        .footer-links a:hover {
            color: var(--white);
            padding-left: 4px;
        }

        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 14px;
            color: #A8B8C8;
        }

        .footer-contact li i {
            color: var(--gold);
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 48px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 0;
        }

        /* ============ Back to top ============ */
        .back-top {
            position: fixed;
            right: 30px;
            bottom: 30px;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: var(--white);
            border: none;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            box-shadow: 0 4px 16px rgba(44, 95, 138, 0.3);
            transition: all 0.3s ease;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
        }

        .back-top.show {
            opacity: 1;
            visibility: visible;
        }

        .back-top:hover {
            background: var(--gold);
            color: var(--navy);
            transform: translateY(-3px);
        }

        /* ============ Responsive ============ */
        @media (max-width: 1199.98px) {
            .main-nav .nav-link {
                font-size: 15px;
                padding: 8px 12px !important;
            }

            .brand-text {
                font-size: 18px;
            }
        }

        @media (max-width: 991.98px) {
            .main-nav {
                min-height: 64px;
                padding-top: 8px;
                padding-bottom: 8px;
            }

            .main-nav .navbar-collapse {
                background: var(--white);
                padding: 16px 20px;
                border-radius: var(--radius-md);
                box-shadow: 0 12px 32px rgba(43, 58, 74, 0.12);
                margin-top: 12px;
            }

            .main-nav .nav-link {
                padding: 12px 8px !important;
                border-bottom: 1px solid var(--border-light);
            }

            .main-nav .nav-link.active::after {
                display: none;
            }

            .main-nav .btn-gold {
                margin-top: 14px;
                width: 100%;
                justify-content: center;
            }

            .faq-hero-title {
                font-size: 34px !important;
            }

            .faq-hero-img {
                margin-top: 32px;
            }

            .faq-section {
                padding: var(--spacing-section-md) 0;
            }

            .faq-contact .contact-inner {
                padding: 40px 24px;
            }

            :root {
                --spacing-section: 72px;
            }
        }

        @media (max-width: 767.98px) {
            .topbar .topbar-right span {
                display: none;
            }

            .topbar .topbar-right {
                gap: 10px;
            }

            .faq-hero {
                padding: 48px 0;
            }

            .faq-hero-title {
                font-size: 30px !important;
            }

            .faq-group-title {
                font-size: 20px;
            }

            .accordion-button {
                padding: 16px 20px;
                font-size: 15px;
                line-height: 1.5;
            }

            .accordion-body {
                padding: 16px 20px 20px 20px;
            }

            .accordion-body {
                padding-left: 20px;
                padding-right: 20px;
            }

            .faq-section {
                padding: var(--spacing-section-sm) 0;
            }

            .faq-contact {
                padding: 48px 0;
            }

            .footer .footer-brand {
                margin-bottom: 12px;
            }

            :root {
                --spacing-section: 56px;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .faq-hero-title {
                font-size: 28px !important;
            }

            .faq-search-box {
                flex-wrap: wrap;
                border-radius: 16px;
                padding: 12px;
                gap: 8px;
            }

            .faq-search-box input {
                height: 40px;
                font-size: 14px;
            }

            .faq-search-box .search-btn {
                flex: 1;
                padding: 10px 16px;
                font-size: 14px;
            }

            .faq-contact .contact-btns {
                flex-direction: column;
                align-items: center;
            }

            .faq-contact .contact-btns .btn-gold,
            .faq-contact .contact-btns .btn-outline-blue {
                width: 100%;
                justify-content: center;
            }

            .back-top {
                right: 16px;
                bottom: 16px;
                width: 40px;
                height: 40px;
                font-size: 14px;
            }
        }